Portal mechanism of automatic bricklaying equipment for cement rotary kiln

Abstract

This utility model relates to a gantry mechanism for an automatic bricklaying equipment in a cement rotary kiln. It includes a gantry body structure and a central steering cylinder structure. The gantry body structure comprises an outer frame structure and a central steering cylinder mounting structure housed within the outer frame structure. The central steering cylinder structure includes a rotating cylinder and cylinder connecting components within the rotating cylinder. The outer frame structure includes a set of side-end connecting seats, a top connecting beam located above the two side-end connecting seats, and a mounting cylinder connecting seat located below the two side-end connecting seats. A bottom vertical push cylinder assembly is disposed between the mounting cylinder connecting seat and the central steering cylinder mounting structure. Employing a double-layer "gantry-central cylinder" structure, it achieves composite control of wide-range movement and millimeter-level positioning. The cylinder assembly and laser measurement system form a closed-loop feedback, improving centering accuracy by over 80% compared to traditional methods. The cylinder support system is equipped with multi-stage pressure relief valves to prevent structural deformation due to overload.

Description

Technical Field

[0001] This utility model relates to the field of cement rotary kilns, and in particular to a gantry mechanism for an automatic bricklaying device for cement rotary kilns. Background Technology

[0002] As a core thermal equipment in cement production, the quality of the refractory brick lining inside the rotary kiln directly affects the kiln's operational safety and service life. Currently, the industry commonly employs a combination of manual bricklaying and mechanical support: operators erect temporary support frames inside the kiln, manually measure and position the refractory bricks layer by layer, and use simple mechanical devices for temporary fixation. This traditional operating method has the following significant drawbacks:

[0003] 1. Traditional gantry mechanisms rely on manual adjustment of the central cylinder position, which has poor positioning accuracy and is time-consuming. The existing process of adjusting the concentricity of the mold frame and the cylinder is complicated and can easily lead to brick misalignment, which seriously affects the concentricity of the kiln operation.

[0004] 2. Low work efficiency: Each replacement of refractory brick lining requires 6-8 skilled workers to work continuously for more than 72 hours. During this period, the supporting structure needs to be repeatedly disassembled and reassembled. The long construction cycle leads to serious production losses for the enterprise.

[0005] 3. Significant safety risks: Construction workers need to work at heights inside a closed kiln with a diameter of 4-6m, which poses safety hazards such as instability of the supporting structure and falls from heights. According to statistics from the Ministry of Emergency Management, 72% of kiln construction accidents in the building materials industry in 2021 occurred during the masonry stage.

[0006] While some technological improvements have been made, the core issue of automatically tracking the actual axis of the kiln body with the centerline of the mold frame remains unresolved. Especially under conditions where the kiln body exhibits axial bending or excessive ellipticity in its cross-section, traditional methods struggle to ensure dynamic adaptation between the refractory brick lining and the kiln shell, directly limiting the service life of the refractory materials.

[0007] Therefore, there is an urgent need to develop an integrated mold center positioning device with automatic adjustment function. Through real-time detection and dynamic compensation technology, the center line of the mold and the actual axis of the kiln body can be automatically matched during the refractory brick masonry process, thereby fundamentally improving the masonry quality and operational safety. Utility Model Content

[0008] This invention provides a gantry mechanism for an automatic bricklaying equipment for a cement rotary kiln, which solves the technical problems of low equipment positioning efficiency and poor support stability during rotary kiln bricklaying construction through coordinated hydraulic cylinder drive.

[0009] The technical solution adopted by this utility model to solve its technical problem is: a gantry mechanism for an automatic bricklaying equipment for a cement rotary kiln, including a gantry body structure and a central steering cylinder structure connected in the gantry body structure. The gantry body structure includes an outer frame structure and a central steering cylinder mounting structure disposed in the outer frame structure. The central steering cylinder structure includes a rotating cylinder and a cylinder connecting component structure disposed in the rotating cylinder. The outer frame structure includes a set of side end connecting seats, a top connecting beam disposed on the upper part of the two side end connecting seats, and a mounting cylinder connecting seat disposed on the lower part of the two side end connecting seats. A bottom vertical push cylinder assembly is disposed between the mounting cylinder connecting seat and the central steering cylinder mounting structure.

[0010] The central steering cylinder mounting structure includes an inner connecting component assembly located between two side end connecting seats, a central steering cylinder mounting frame located inside the inner connecting component assembly, cylinder connecting blocks located at the upper and lower inner ends of the central steering cylinder mounting frame, and a sleeve connecting body located between the two cylinder connecting blocks.

[0011] The aforementioned cylindrical connecting component structure includes upper and lower connecting parts located at the end of the rotating cylindrical body, a limiting mounting guide block located outside the rotating cylindrical body, and a drive connecting groove located outside the other port of the rotating cylindrical body.

[0012] The inner end face of the rotating cylinder is provided with a reinforcing inner surface.

[0013] A horizontal adjustment cylinder assembly is installed between the sleeve body and the central steering cylinder mounting base frame.

[0014] The beneficial effects of this invention are as follows: It adopts a double-layer structure of "gantry-central cylinder," achieving composite control of large-range movement and millimeter-level positioning. The hydraulic cylinder assembly and laser measurement system form a closed-loop feedback, improving centering accuracy by more than 80% compared to traditional methods. The hydraulic cylinder support system is equipped with multi-stage pressure relief valves to prevent structural deformation caused by overload.

[0015] The present invention will be described in more detail below with reference to the accompanying drawings and embodiments. Attached Figure Description

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

[0017] Figure 2 for Figure 1 Side view.

[0018] Figure 3 for Figure 1 A three-dimensional image.

[0019] Figure 4 This is a schematic diagram of the gantry structure of this utility model.

[0020] Figure 5 This is a schematic diagram of the engine structure of the central steering cylinder of this utility model.

[0021] Figure 6 This is a schematic diagram of the engine structure of the central steering cylinder of this utility model.

[0022] In the diagram: 1. Rotating cylinder, 2. Side end connecting seat, 3. Top connecting beam, 4. Mounting cylinder connecting seat, 5. Bottom vertical push cylinder assembly, 6. Inner connecting component assembly, 7. Center steering cylinder mounting base frame, 8. Cylinder connecting block, 9. Upper and lower connecting parts, 10. Limiting mounting guide block, 11. Drive docking groove, 12. Reinforced inner surface, 13. Sleeve, 14. Horizontal adjustment cylinder assembly, 15. External connecting seat. Detailed Implementation

[0023] The terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end" used in the application text to indicate the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings. They are used solely for the convenience of describing the present invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0024] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," and "connected," etc., should be interpreted broadly. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0025] Example 1, as Figure 1-6As shown, a gantry mechanism for an automatic bricklaying equipment for a cement rotary kiln includes a gantry body structure and a central steering cylinder structure connected within the gantry body structure. The gantry body structure includes an outer frame structure and a central steering cylinder mounting structure within the outer frame structure. The central steering cylinder structure includes a rotating cylinder 1 and a cylinder connecting component structure within the rotating cylinder. The outer frame structure includes a set of side end connecting seats 2, a top connecting beam 3 located above the two side end connecting seats, and a mounting cylinder connecting seat 4 located below the two side end connecting seats. A bottom vertical push cylinder assembly 5 is provided between the mounting cylinder connecting seat and the central steering cylinder mounting structure. Multiple external connecting seats 15 are provided in the side end connecting seats 2.

[0026] The central steering cylinder mounting structure includes an inner connecting component assembly 6 located between two side end connecting seats, a central steering cylinder mounting frame 7 located inside the inner connecting component assembly, cylinder connecting blocks 8 located at the upper and lower inner ends of the central steering cylinder mounting frame, and a sleeve 13 located between the two cylinder connecting blocks 8.

[0027] The aforementioned cylindrical connecting component structure includes upper and lower connecting parts 9 located at the end of the rotating cylindrical body, a limiting mounting guide block 10 located outside the rotating cylindrical body, and a drive connecting groove 11 located outside the other end of the rotating cylindrical body.

[0028] The reinforcing inner surface 12 is located on the inner end face of the rotating cylinder.

[0029] A horizontal adjustment cylinder assembly 14 is provided between the sleeve body 13 and the center steering cylinder mounting base 7.

[0030] Working principle

[0031] a. Moving stage: The crawler-mounted traveling mechanism transports the gantry to the end of the rotary kiln shell;

[0032] b. Coarse positioning: Initially adjust the parallelism between the gantry and the cylinder axis using a laser rangefinder;

[0033] c. Fine-tuning the mind:

[0034] Adjust the height of the central cylinder of the vertical push cylinder assembly to the theoretical center line;

[0035] The horizontal cylinder assembly compensates for the ellipticity deviation of the cylinder body, with an error ≤ ±1.5mm;

[0036] d. Support deployment:

[0037] The mast hydraulic cylinder support system lifts the gantry off the tracks, forming a stable support platform;

[0038] The cross-shaped support frame has been radially extended, and it self-locks when the contact pressure reaches the set load.

[0039] e. Rotary Bricklaying: The central cylinder drives the rotary bricklaying mechanism to rotate, performing circumferential bricklaying. The gantry mechanism is extended to be perpendicular to the kiln axis, and the central cylinder is connected to the gantry body via four sets of linear guide rails. Horizontal hydraulic cylinder groups (2-4) are symmetrically distributed on both sides of the cylinder. When the laser rangefinder detects a deviation in the cylinder center, the PLC controller drives the hydraulic cylinder groups (extension and retraction) according to a preset algorithm to perform compensating movements until the concentricity error is ≤0.5mm. The vertical push hydraulic cylinders extend and retract to adjust the height of the central cylinder to the theoretical centerline.

[0040] Employing a double-layer "gantry-central cylinder" structure, it achieves combined control of wide-range movement and millimeter-level positioning. The hydraulic cylinder assembly forms a closed-loop feedback with the laser measurement system, improving centering accuracy by more than 80% compared to traditional methods. The hydraulic cylinder support system is equipped with multi-stage pressure relief valves to prevent structural deformation caused by overload.

[0041] The above embodiments are merely descriptions of preferred embodiments of the present utility model and are not intended to limit the scope of the present utility model. Various modifications and improvements made to the technical solutions of the present utility model by those skilled in the art without departing from the spirit of the present utility model should fall within the protection scope defined by the claims of the present utility model.

[0042] The parts not covered in this utility model are the same as or can be implemented using existing technologies.

Claims

1. A gantry mechanism for an automatic bricklaying device for a cement rotary kiln, comprising a gantry body structure and a central steering cylinder structure connected to the gantry body structure, characterized in that: The gantry structure includes an outer frame structure and a central steering cylinder mounting structure within the outer frame structure. The central steering cylinder structure includes a rotating cylinder and a cylinder connecting component structure within the rotating cylinder. The outer frame structure includes a set of side end connecting seats, a top connecting beam located above the two side end connecting seats, and a mounting cylinder connecting seat located below the two side end connecting seats. A bottom vertical push cylinder assembly is provided between the mounting cylinder connecting seat and the central steering cylinder mounting structure.

2. The gantry mechanism of the automatic bricklaying equipment for a cement rotary kiln as described in claim 1, characterized in that: The central steering cylinder mounting structure includes an inner connecting component assembly located between two side end connecting seats, a central steering cylinder mounting frame located inside the inner connecting component assembly, cylinder connecting blocks located at the upper and lower inner ends of the central steering cylinder mounting frame, and a sleeve connecting body located between the two cylinder connecting blocks.

3. The gantry mechanism of the automatic bricklaying equipment for a cement rotary kiln as described in claim 1, characterized in that: The aforementioned cylindrical connecting component structure includes upper and lower connecting parts located at the end of the rotating cylindrical body, a limiting mounting guide block located outside the rotating cylindrical body, and a drive connecting groove located outside the other port of the rotating cylindrical body.

4. The gantry mechanism of the automatic bricklaying equipment for a cement rotary kiln as described in claim 3, characterized in that: The inner end face of the rotating cylinder is provided with a reinforcing inner surface.

5. The gantry mechanism of the automatic bricklaying equipment for a cement rotary kiln as described in claim 2, characterized in that: A horizontal adjustment cylinder assembly is provided between the sleeve body and the central steering cylinder mounting base frame.

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