Fire grate hoisting tool

Abstract

The utility model discloses a fire grate hoisting tool. The fire grate hoisting tool comprises a hoisting tool frame and hoisting legs, two lifting legs are arranged on the lifting appliance frame at intervals; lifting lugs are further arranged on the top surface of the lifting appliance frame; each lifting leg comprises a first lifting leg and a second lifting leg, each of the first lifting leg and the second lifting leg comprises a horizontal arm and a vertical arm, a sliding groove is formed in each horizontal arm, the two horizontal arms are inserted together and then are connected together through a connecting bolt penetrating through the two sliding grooves, positioning bolts are arranged on the two vertical arms, and the positioning bolts penetrate through the two sliding grooves. A flange connecting plate is arranged at the bottom of each vertical arm; the vertical arm of the first lifting leg is clamped on one side of the lifting appliance frame, the vertical arm of the second lifting leg is clamped on the other side of the lifting appliance frame, and the first lifting leg and the second lifting leg are fixed on the lifting appliance frame by rotating the two positioning bolts; and the horizontal arms of the first lifting leg and the second lifting leg are arranged at the top of the lifting appliance frame. And the lifting device can be suitable for lifting fire grates of different furnace types at different widths, lengths and inclination angles.

Description

Technical Field

[0001] The utility model belongs to the field of grate hoisting, and in particular relates to a grate hoisting tool. Background Art

[0002] The statements herein merely provide background art related to the present invention and do not necessarily constitute prior art.

[0003] In the field of waste-to-energy, the grate structure is large, and controlling the deformation of the structure during the lifting process is a key step. However, with the advancement of technology, larger capacity boilers are constantly updated, larger grates continue to appear, and the length of the grates is getting longer and longer. In order to control the deformation of the grate during the lifting process, different types of hoists are needed. The original hoists correspond to the grates one by one and are not universal. Although a hoist that can be used with different slopes and widths has appeared, most of the grates are mainly different in length. At present, the hoists in the grate hoists are fixed and cannot be moved. One furnace type requires one to two hoists. As the length of the grate increases, grates of different tonnages require different hoists. The demand for hoists is large, they are not universal, and the scope of use is small; it is easy to cause high material consumption costs, large transportation volume, and increased costs.

[0004] At present, the prior art also discloses some grate hoists, but these grate hoists are mainly based on the perspectives of eliminating torsional stress during grate lifting and hoisting and adjusting grates with different inclination angles, with different focuses and relatively single applicability. They cannot be used for hoisting grates of different furnace types with different widths, lengths, and inclination angles. Summary of the invention

[0005] In view of the deficiencies in the prior art, the purpose of the utility model is to provide a grate hoisting tool that can be adapted to the hoisting of grates of different widths, lengths and inclination angles of furnaces.

[0006] In order to achieve the above purpose, the utility model is implemented through the following technical solutions:

[0007] In a first aspect, an embodiment of the utility model provides a grate hoisting tool, comprising a hoisting frame and a hoisting leg; at least two hoisting legs are spaced apart on the hoisting frame;

[0008] The hoist frame is a rectangular frame, a plurality of cross beams are arranged inside the rectangular frame, and four lifting ears are arranged on the top surface of the rectangular frame; the steel wire rope is connected to the four lifting ears through a clamp ring to complete the lifting connection;

[0009] Each of the hanging legs comprises a first hanging leg and a second hanging leg, each of the first hanging leg and the second hanging leg comprises a horizontal arm and a vertical arm fixed together, and the length of the vertical arm of the first hanging leg is greater than the length of the vertical arm of the second hanging leg; a slide groove is arranged on each horizontal arm, and after the two horizontal arms are inserted together, they are connected together by connecting bolts passing through the two slide grooves, and a positioning bolt is respectively arranged on the two vertical arms, and the two positioning bolts are arranged oppositely; and a flange connecting plate is arranged at the bottom of each vertical arm;

[0010] The vertical arm of the first hanging leg is clamped on one side of the sling frame, and the vertical arm of the second hanging leg is clamped on the other side of the sling frame. By rotating two positioning bolts, the first hanging leg and the second hanging leg can be fixed on the sling frame, and the horizontal arms of the first hanging leg and the second hanging leg are located at the top of the sling frame.

[0011] As a further technical solution, a plurality of cross beams are arranged in the rectangular frame.

[0012] As a further technical solution, the wire rope is connected to the four lifting ears through a clamp to complete the lifting connection.

[0013] As a further technical solution, the number of the flange connecting plates is determined according to the inclination angle of the grate.

[0014] As a further technical solution, the insertion length between the first hanging leg and the horizontal arm of the second hanging leg is determined by the horizontal projection width of the grate.

[0015] As a further technical solution, the two positioning bolts on the first hanging leg and the second hanging leg are arranged opposite to each other.

[0016] As a further technical solution, the hanging legs are clamped on both sides of the center position of the hanging device frame.

[0017] As a further technical solution, the two suspension legs are symmetrically arranged relative to the center of the suspension frame.

[0018] As a further technical solution, the distance between the two hanging legs is determined by the length of the grate.

[0019] As a further technical solution, the four lifting ears are respectively located on the four corners of the lifting device frame.

[0020] The beneficial effects of the above-mentioned embodiments of the utility model are as follows:

[0021] The utility model arranges the above-mentioned slide grooves on the first hanging leg and the second hanging leg, and the distance between the first hanging leg and the second hanging leg can be adjusted according to the horizontal projection width of the grate to adapt to grates of different widths; at the same time, since the inclination angles of different grates are different, leveling can be performed by setting the number of flange connecting plates; at the same time, the spacing between the two hanging legs on the hanger frame can be determined according to the length of the grate. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The drawings in the specification, which constitute a part of the present invention, 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 on the present invention.

[0023] Figure 1 It is an assembly schematic diagram of the utility model;

[0024] Figure 2 It is a schematic diagram of the sling frame of the utility model;

[0025] Figure 3 It is a schematic diagram of the hanging leg of the utility model;

[0026] In the figure: the distances or sizes between parts are exaggerated to show the positions of various parts, and the schematic diagram is for illustration only.

[0027] 1 hoist frame, 2 hoisting legs, 1-1 rectangular frame, 1-2 crossbeam, 1-3 lifting ears, 2-1 first hoisting leg, 2-2 second hoisting leg, 2-3 positioning bolts, 2-4 connecting bolts, 2-5 slide grooves, 2-6 flange connecting plates. DETAILED DESCRIPTION

[0028] It should be noted that the following detailed descriptions are all illustrative and are intended to provide further explanation of the present invention. Unless otherwise specified, all technical and scientific terms used in the present invention have the same meanings as those commonly understood by those skilled in the art to which the present invention belongs.

[0029] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present invention. As used herein, unless otherwise explicitly stated in the present invention, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "include" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or their combinations;

[0030] For the convenience of description, if the words "up", "down", "left" and "right" appear in the present invention, they only indicate that they are consistent with the up, down, left and right directions of the drawings themselves, and do not limit the structure. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or component must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation on the present invention.

[0031] As described in the background technology, the deficiencies in the prior art, in order to solve the above technical problems, the utility model proposes a grate lifting tool; including a hanger frame and a hanging leg; two hanging legs are arranged at intervals on the hanger frame; the hanger frame is a rectangular frame, and four hanging ears are also arranged on the top surface of the rectangular frame; each of the hanging legs includes a first hanging leg and a second hanging leg, and the first hanging leg and the second hanging leg each include a horizontal arm and a vertical arm fixed together, and the length of the vertical arm of the first hanging leg is greater than the length of the vertical arm of the second hanging leg; a slide groove is arranged on each horizontal arm, and after the two horizontal arms are inserted together, they are connected together by connecting bolts passing through the two slide grooves, a positioning bolt is respectively provided on the two vertical arms, and a flange connecting plate is provided at the bottom of each vertical arm; the vertical arm of the first hanging leg is clamped on one side of the hanger frame, and the vertical arm of the second hanging leg is clamped on the other side of the hanger frame, and the first hanging leg and the second hanging leg are fixed on the hanger frame by rotating the two positioning bolts; the horizontal arms of the first hanging leg and the second hanging leg are arranged on the top of the hanger frame.

[0032] The utility model arranges the above-mentioned slide groove on the first hanging leg and the second hanging leg of each hanging leg, and can adjust the distance between the first hanging leg and the second hanging leg according to the horizontal projection width of the grate to adapt to grates of different widths; at the same time, since the inclination angles of different grates are different, leveling can be achieved by adjusting the number of flange connecting plates arranged at the bottom of each hanging leg; at the same time, the spacing between the two hanging legs on the hanger frame can be determined according to the length of the grate.

[0033] In a typical implementation of the present invention, Figure 1 , Figure 2 , Figure 3 As shown: the grate hanger disclosed in the utility model comprises a hanger frame 1 and a hanger leg 2; two hangers 2 are arranged on the hanger frame 1 at intervals; the two hangers 2 are arranged side by side, and the interval between them can be adjusted;

[0034] Specifically, the hanger frame 1 is a rectangular frame 1-1, such as Figure 2 As shown, a plurality of cross beams 1-2 are arranged in the rectangular frame 1-1 to reinforce the rectangular frame 1-1, and four lifting ears 1-3 are arranged on the top surface of the rectangular frame 1-1. The steel wire rope is connected to the four lifting ears 1-3 through a clamp ring to complete the lifting connection;

[0035] The hanging leg 2 is as follows Figure 3 As shown, it includes a first hanging leg 2-1 and a second hanging leg 2-2, each of which includes a horizontal arm and a vertical arm fixed together, and the length of the vertical arm of the first hanging leg 2-1 is greater than the length of the vertical arm of the second hanging leg 2-2; a slide groove 2-5 is provided on each horizontal arm, and after the two horizontal arms are inserted together, they are connected together through a connecting bolt 2-4 passing through the two slide grooves 2-5, and a positioning bolt 2-3 is provided on each of the two vertical arms, and the two positioning bolts 2-3 are arranged opposite to each other; and a flange connecting plate 2-6 is provided at the bottom of each vertical arm;

[0036] After the sling frame 1 and the boom 2 are combined together, the vertical arm of the first hanging leg 2-1 is clamped on one side of the sling frame 1, and the vertical arm of the second hanging leg 2-2 is clamped on the other side of the sling frame 1. By rotating the two positioning bolts 2-3, the first hanging leg 2-1 and the second hanging leg 2-2 can be fixed on the sling frame 1, and the horizontal arms of the first hanging leg 2-1 and the second hanging leg 2-2 are located at the top of the sling frame 1;

[0037] By setting the above-mentioned slide groove, this embodiment can adjust the distance between the first hanging leg 2-1 and the second hanging leg 2-2 according to the horizontal projection width of the grate to adapt to grates of different widths; at the same time, since the inclination angles of different grates are different, leveling can be performed by setting the number of flange connecting plates 2-6; at the same time, the spacing between the two hanging legs 2 on the hanger frame can be determined according to the length of the grate.

[0038] Furthermore, a plurality of cross beams are arranged in the rectangular frame, and the number of the cross beams is determined according to the strength and size of the rectangular frame. The main function of the cross beams is to increase the overall strength of the rectangular frame.

[0039] Furthermore, the two positioning bolts on the first hanging leg and the second hanging leg are arranged opposite to each other.

[0040] Furthermore, the hanging legs are mounted on both sides of the center of the hanger frame; the two hanging legs are symmetrically arranged relative to the center of the hanger frame.

[0041] Furthermore, the four lifting ears are respectively located on the four corners of the lifting device frame.

[0042] Specifically, Figure 2 As shown, H-shaped steel (500*300) is combined into a rectangular sling frame, and a plurality of beams 1-2 are used to reinforce the rectangular sling frame. Four lifting ears 1-3 (thickness 25mm, material Q345) are welded at four angles above the frame. The wire rope is connected to the four lifting ears through a clamp ring to complete the lifting connection.

[0043] like Figure 3 As shown: the first hanging leg 2-1 is made of rectangular steel (280*180*10), and the second hanging leg 2-2 is made of rectangular steel (300*200*12). The first hanging leg 2-1 and the second hanging leg 2-2 are embedded in the horizontal arm, and the connecting bolts through the sliding groove are adjusted and tightened according to the horizontal projection width of the grate; connecting plates (Q345, thickness 20mm) are welded under the vertical arms, and the hanging legs and the grate are fastened with hinged hole bolts through the rectangular flange connecting plates. Due to the different inclination angles of the grate, leveling can be achieved by increasing the number of flange connecting plates; the vertical arms of the first hanging leg 2-1 and the second hanging leg 2-2 are provided with positioning bolts 2-3. The spacing between the two hanging legs is adjusted according to the length of the grate and the horizontal distance of the lifting flange above the grate, and the positioning bolts are used to tighten them.

[0044] The specific installation method is as follows:

[0045] 1. Before lifting the grate, first determine the grate inclination angle of this model, calculate the number of flange connecting plates 2-6 that need to be installed under the lifting legs, and prepare a sufficient number of flange connecting plates 2-6.

[0046] 2 According to the width of the grate and the spacing of the transverse connecting flanges above the grate, adjust the spacing between the first hanging leg 2-1 and the second hanging leg 2-2 under each hanging leg so that the flange connecting plate 2-6 under the hanging leg and the flange above the grate are on the same longitudinal axis; after the spacing is adjusted, tighten the connecting bolts of the horizontal arm sliding grooves of the first hanging leg 2-1 and the second hanging leg 2-2; and hang the assembled hanging leg 2 on the hanger frame 1.

[0047] 3 According to the length of the grate and the distance of the longitudinal connecting flange above the grate, adjust the horizontal spacing of the two movable hanging legs 2 on the hanger frame so that the connecting plate below the hanging legs is aligned with the flange above the grate to achieve the condition of bolt connection; after the spacing between the two hanging legs 2 is adjusted, tighten the positioning bolts 2-3 of the vertical arms of the hanging legs 2 to ensure that the position of the hanging legs 2 on the hanger frame 1 is relatively fixed.

[0048] 4 Connect the lifting wire rope to the lifting ears 1-3 of the lifting device frame through the clamp, lift the grate lifting device as a whole above the grate, and place it on the flange above the grate according to the connection plate prepared in advance, and connect and tighten the grate and the lifting device with bolts.

[0049] 5. The grate hoist and grate are hoisted and installed as a whole. After the grate is in place, the connecting bolts between the entire hoist and the grate are removed.

[0050] Finally, it should be noted that relational terms such as first and second are merely used to distinguish one entity or operation from another entity or operation, but do not necessarily require or imply any actual relationship or order between these entities or operations.

[0051] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A grate hoisting tool, characterized in that: It comprises a spreader frame and a spreader leg; two spreaders are arranged on the spreader frame at intervals; The sling frame is a rectangular frame, and four lifting ears are also arranged on the top surface of the rectangular frame; each of the legs includes a first leg and a second leg, and the first leg and the second leg each include a horizontal arm and a vertical arm fixed together, and the length of the vertical arm of the first leg is greater than the length of the vertical arm of the second leg; a slide groove is arranged on each horizontal arm, and after the two horizontal arms are inserted together, they are connected together by connecting bolts passing through the two slide grooves, and a positioning bolt is respectively provided on the two vertical arms, and a flange connecting plate is provided at the bottom of each vertical arm; the vertical arm of the first leg is clamped on one side of the sling frame, and the vertical arm of the second leg is clamped on the other side of the sling frame, and the first leg and the second leg are fixed on the sling frame by rotating the two positioning bolts; the horizontal arms of the first leg and the second leg are arranged on the top of the sling frame.

2. The grate hoisting tool according to claim 1, characterized in that: A plurality of beams are arranged in the rectangular frame.

3. The grate hoisting tool according to claim 1, characterized in that: The steel wire rope is connected with the four lifting ears through a clamp ring to complete the lifting connection.

4. The grate hoisting tool according to claim 1, characterized in that: The number of the flange connection plates is determined according to the inclination angle of the grate.

5. The grate hoisting tool according to claim 1, characterized in that: The insertion length between the horizontal arms of the first hanging leg and the second hanging leg is determined by the horizontal projection width of the grate.

6. The grate hoisting tool according to claim 1, characterized in that: The two positioning bolts on the first hanging leg and the second hanging leg are arranged opposite to each other.

7. The grate hoisting tool according to claim 1, characterized in that: The hanging legs are clamped on both sides of the center position of the hanging device frame.

8. The grate hoisting tool according to claim 1, characterized in that: The two suspension legs are symmetrically arranged relative to the center of the suspension frame.

9. The grate hoisting tool according to claim 1, characterized in that: The distance between the two hanging legs is determined by the length of the grate.

10. The grate hoisting tool according to claim 1, characterized in that: The four lifting ears are respectively located on the four corners of the lifting device frame.

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