A method for assembling a large rotary kiln roller ring and a cylinder

Abstract

The present invention provides an assembly of a large rotary kiln roller ring and a cylinder, which comprises the following steps: prefabricating a roller ring bracket, placing the roller ring upright on the roller ring bracket by a crane and fixedly connecting the roller ring with the roller bracket, lifting the rotary kiln cylinder horizontally to the position of the inner hole of the roller ring by a crane, moving the end of the rotary kiln cylinder horizontally to insert the end of the rotary kiln cylinder into the inner hole of the roller ring, moving a crane close to the roller ring to the other side of the roller ring, and then using two cranes to simultaneously lift the roller ring to the installation position. The invention has the advantages of simple steps, easy operation, high construction efficiency, good safety, etc., and can reduce construction costs and shorten construction period.

Description

Technical Field

[0001] The invention relates to the technical field of equipment installation, and in particular to an assembly method of a roller ring and a cylinder of a large rotary kiln. Background Art

[0002] The rotary kiln is the core equipment in the cement production process. The roller ring and the rotary kiln cylinder are one of the main components of the rotary kiln. With the needs of market development, production equipment is becoming increasingly large-scale, especially the rotary kiln is getting larger and larger, longer and longer, and the weight of a single piece is getting heavier. For example, in a certain engineering case, each rotary kiln weighs 1955.85 tons, and the total length of the rotary kiln is 90 meters. There are three roller rings that need to be assembled with the rotary kiln cylinder. Among them, the roller ring weighs 275.5 tons after being assembled with the rotary kiln cylinder. The outer dimension of the roller ring is Φ7.87 meters, and the length of the rotary kiln cylinder is 12.6 meters. In the prior art, the assembly of the roller ring and the cylinder is hoisted into the air for assembly. Since the roller ring needs to be very large in size and weight with the rotary kiln cylinder, and the rotary kiln has a 4-degree slope, it is very difficult to assemble. The installation of a single roller ring takes 3-4 days, which prolongs the construction period and increases the construction cost. At the same time, there are certain safety hazards.

[0003] It should be noted that the information disclosed in the above background technology section is only used to enhance the understanding of the background of the present invention, and therefore may include information that does not constitute the prior art known to ordinary technicians in the field. Summary of the invention

[0004] A series of simplified concepts are introduced in the Summary of the Invention, which are all simplifications of the prior art in the field, and will be further described in detail in the Detailed Description of the Invention. The Summary of the Invention of the present invention does not mean to attempt to define the key features and essential technical features of the claimed technical solution, nor does it mean to attempt to determine the scope of protection of the claimed technical solution.

[0005] The present invention provides a method for assembling a large rotary kiln roller ring and a cylinder in order to solve the technical problem of the market, and is characterized in that it comprises the following steps:

[0006] S1, prefabricate the rolling ring bracket and select a flat site to place the rolling ring bracket;

[0007] S2, use two cranes to lift the horizontally placed roller ring off the ground;

[0008] S3, release a crane to rotate the rolling ring 90 degrees in the air;

[0009] S4, using a crane to place the roller ring upright on the roller ring bracket, and using fasteners to fix the roller ring and the roller ring bracket;

[0010] S5, after lifting the rotary kiln cylinder horizontally to the position of the inner hole of the rolling ring by two cranes, the end of the rotary kiln cylinder is moved horizontally to insert the end of the rotary kiln cylinder into the inner hole of the rolling ring;

[0011] S6, move a crane close to the rolling ring to the other side of the rolling ring, and then two cranes simultaneously lift the rolling ring to the installation position.

[0012] Optionally, the crane is a crawler crane.

[0013] Optionally, the fastener is a bolt.

[0014] Optionally, the roller bracket comprises:

[0015] Two bracket assemblies, the two bracket assemblies are spaced apart and parallel to each other, each bracket assembly comprises a cross beam, two spaced apart vertical beams and two first diagonal bracing beams, the lower ends of the two vertical beams are respectively fixedly connected to the cross beam, and the two ends of the two first diagonal bracing beams are respectively fixedly connected to the upper ends of the two vertical beams and the cross beam to respectively support the two vertical beams;

[0016] two connecting beams, adapted to respectively connect the cross beams of the two bracket assemblies;

[0017] Wherein, the two bracket assemblies further include two second diagonal bracing beams, and the two ends of the two second diagonal bracing beams are respectively fixedly connected to the upper ends of the two vertical beams and the two connecting beams.

[0018] Optionally, the roller is placed vertically between two vertical beams of the two bracket assemblies.

[0019] The technical effects of the present invention are:

[0020] The present invention adopts the method of first hanging the roller ring on the prefabricated roller ring bracket and fixing the roller ring, and then hanging the rotary kiln cylinder. This method greatly reduces the difficulty of assembling the roller ring and the rotary kiln cylinder, has the advantages of simple steps, easy operation, high construction efficiency, good safety, etc., and can reduce construction costs and shorten construction period. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and, together with the description, serve to explain the principles of the present disclosure.

[0022] Figure 1 is a schematic diagram of roller hoisting according to an embodiment of the present invention;

[0023] Figure 2 A front view of a roller according to an embodiment of the present invention, which is placed upright on a roller support;

[0024] Figure 3 A side view of a roller according to an embodiment of the present invention, in which the roller is placed upright on a roller support;

[0025] Figure 4 A top view of a roller support according to an embodiment of the present invention;

[0026] Figure 5 A first schematic diagram of the assembly of a rotary kiln cylinder and a roller ring according to an embodiment of the present invention;

[0027] Figure 6 A second schematic diagram of the assembly of the rotary kiln cylinder and the roller ring according to an embodiment of the present invention. DETAILED DESCRIPTION

[0028] The following describes the implementation methods of the present invention through specific specific embodiments, and those skilled in the art can fully understand other advantages and technical effects of the present invention from the contents disclosed in this specification. The present invention can also be implemented or applied through different specific implementation methods, and the details in this specification can also be applied based on different viewpoints, and various modifications or changes can be made without deviating from the overall design concept of the invention. It should be noted that the following embodiments and the features in the embodiments can be combined with each other in the absence of conflict. The following exemplary embodiments of the present invention can be implemented in a variety of different forms and should not be interpreted as being limited to the specific embodiments described herein. It should be understood that these embodiments are provided to make the disclosure of the present invention thorough and complete, and to fully convey the technical solutions of these exemplary specific embodiments to those skilled in the art.

[0029] like Figures 1 to 6 In the embodiment of the present invention shown, the assembly of a large rotary kiln roller ring and a cylinder comprises the following steps:

[0030] S1, prefabricate a rolling ring bracket 1, and select a flat site to place the rolling ring bracket 1;

[0031] S2, using two cranes 2 to lift the horizontally placed roller ring 3 off the ground;

[0032] S3, releasing a crane 2 to make the rolling ring 3 rotate 90 degrees in the air;

[0033] S4, using a crane to place the roller 3 upright on the roller bracket 1, and using fasteners to fix the roller 3 and the roller bracket 1, wherein the fasteners are bolts.

[0034] S5, after lifting the rotary kiln cylinder 4 horizontally to the position of the inner hole of the rolling ring 3 by two cranes 2, the end of the rotary kiln cylinder 4 is inserted into the inner hole of the rolling ring 3 by horizontal movement;

[0035] S6, move a crane 2 close to the rolling ring 3 to the other side of the rolling ring 3, and then the two cranes 2 simultaneously lift the rolling ring 3 to the installation position.

[0036] In this embodiment, the crane 2 is a crawler crane suitable for mobile lifting operations.

[0037] The roller bracket 1 includes two bracket assemblies 11 and two connecting beams 12, wherein the two bracket assemblies 11 are arranged at intervals and parallel to each other, each bracket assembly includes a cross beam 111, two vertical beams 112 arranged at intervals and two first diagonal bracing beams 113, the lower ends of the two vertical beams are respectively fixedly connected to the cross beam, the two ends of the two first diagonal bracing beams 113 are respectively fixedly connected to the upper ends of the two vertical beams 112 and the cross beam 111 to respectively support the two vertical beams 112, and the two connecting beams 12 are respectively connected to the cross beams 111 of the two bracket assemblies 11, wherein the two bracket assemblies 11 also include two second diagonal bracing beams 115, the two ends of the two second diagonal bracing beams 115 are respectively fixedly connected to the upper ends of the two vertical beams 112 and the two connecting beams 114. In this embodiment, the roller 3 is placed upright and the roller is placed upright between the two vertical beams 112 of the two bracket assemblies 11.

[0038] Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by those of ordinary skill in the art to which the present invention belongs. It will also be understood that, unless expressly defined herein, terms such as those defined in general dictionaries should be interpreted as having a meaning consistent with their meaning in the context of the relevant art, and not interpreted in an ideal or overly formal sense.

[0039] The present invention has been described in detail above through specific implementation modes and embodiments, but these do not constitute limitations of the present invention. Without departing from the principles of the present invention, those skilled in the art may also make many variations and improvements, which should also be regarded as the protection scope of the present invention.

Claims

1. A method for assembling a large rotary kiln roller ring and a cylinder, characterized in that: The following steps are involved: S1, prefabricate a rolling ring bracket, and select a flat site to place the rolling ring bracket; the rolling ring bracket includes two bracket assemblies; the two bracket assemblies are spaced apart and parallel to each other, each bracket assembly includes a crossbeam, two spaced apart vertical beams and two first diagonal bracing beams, the lower ends of the two vertical beams are respectively fixedly connected to the crossbeam, and the two ends of the two first diagonal bracing beams are respectively fixedly connected to the upper ends of the two vertical beams and the crossbeam to respectively support the two vertical beams; two connecting beams, adapted to respectively connect the cross beams of the two bracket assemblies; Wherein, the two bracket assemblies further include two second diagonal bracing beams, and the two ends of the two second diagonal bracing beams are respectively fixedly connected to the upper ends of the two vertical beams and the two connecting beams; S2, use two cranes to lift the horizontally placed roller ring off the ground; S3, release a crane to rotate the rolling ring 90 degrees in the air; S4, using a crane to place the roller ring upright on the roller ring bracket, wherein the roller ring is placed upright between two vertical beams of the two bracket assemblies, and the roller ring is fixedly connected to the roller ring bracket by fasteners; S5, after lifting the rotary kiln cylinder horizontally to the position of the inner hole of the rolling ring by two cranes, the end of the rotary kiln cylinder is moved horizontally to insert the end of the rotary kiln cylinder into the inner hole of the rolling ring; S6, move a crane close to the rolling ring to the other side of the rolling ring, and then two cranes simultaneously lift the rolling ring to the installation position.

2. The assembly method according to claim 1, characterized in that: The crane is a crawler crane.

3. The assembly method according to claim 1, characterized in that: The fastener is a bolt.

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