A hydraulic cylinder support mounting structure of a coal mill hydraulic system

Abstract

The utility model discloses a kind of oil cylinder support mounting structure of coal mill hydraulic system, including nut block prepositioned in the bottom plate of coal mill and double-end bolt connected with nut block and threaded in oil cylinder support, fixed sleeve is sleeved in the outside of double-end bolt, the fixed sleeve one end is abutted with the surface of oil cylinder support, and the other end is locked and fixed by the double-nut structure of the end of double-end bolt and is connected by thread, the installation and fixation of oil cylinder support are completed by double-end bolt and fixed sleeve;By double-nut structure and fixed sleeve cooperation, bolt shearing problem caused by effectively prevent connection loosening, improve the service life of double-end bolt, ensure the stable operation of hydraulic oil cylinder.

Description

Technical Field

[0001] This utility model relates to the field of coal mill equipment assembly technology, specifically to a cylinder support installation structure for a coal mill hydraulic system. Background Technology

[0002] The EM-type medium-speed ball mill can be used to grind coal, petroleum coke, gypsum, limestone, bangton, clay, phosphate and other minerals.

[0003] The hydraulic system provides the pressure required for the grinding system to operate. The pressure provided by the hydraulic system is generated by hydraulic cylinders tightening spring supports, which are then transmitted to the grinding elements through springs. The springs are evenly distributed along the circumference, allowing for a balanced distribution of pressure across the grinding area.

[0004] The hydraulic cylinder is connected to the base plate of the coal mill via a cylinder support and is secured with bolts. However, bolted connections are prone to loosening due to vibrations during operation, which can cause the bolts to break and lead to hydraulic cylinder malfunction. Utility Model Content

[0005] Technical objective: To address the shortcomings of existing hydraulic cylinder installation methods, this utility model discloses a cylinder support installation structure for a coal mill hydraulic system.

[0006] Technical solution: To achieve the above technical objectives, the present invention adopts the following technical solution: A cylinder support installation structure for a coal mill hydraulic system includes a nut block pre-installed in the coal mill base plate and a double-ended bolt connected to the nut block and passing through the cylinder support. A fixing sleeve is sleeved on the outside of the double-ended bolt. One end of the fixing sleeve abuts against the surface of the cylinder support, and the other end is locked and fixed by a double nut structure threaded to the end of the double-ended bolt. The cylinder support is installed and fixed by the double-ended bolt and the fixing sleeve.

[0007] Preferably, a clamping washer is provided between the double nut structure of this utility model and the end of the fixed sleeve, and the clamping washer separates the fixed sleeve and the corresponding nut.

[0008] Preferably, the double-nut structure of this utility model includes a pre-tightening nut that cooperates with the compression washer, and a locking nut disposed at the outer end of the pre-tightening nut. The pre-tightening nut provides a clamping force to the fixing sleeve, and the locking nut locks and fixes the pre-tightening nut.

[0009] Preferably, the number of installation structures of this utility model is four sets, which are set at the four corners of the hydraulic cylinder support to fix the hydraulic cylinder support.

[0010] Beneficial effects: The cylinder support installation structure of the hydraulic system of a coal mill disclosed in this utility model, by using a double nut structure and a fixed sleeve, can effectively prevent bolt shearing caused by loose connection, improve the service life of double-ended bolts, and ensure the stable operation of hydraulic cylinder. Attached Figure Description

[0011] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below.

[0012] Figure 1 This is a schematic diagram of the installation structure of this utility model; Among them, 1-coal mill base plate, 2-nut block, 3-cylinder support, 4-double-ended bolt, 5-fixing sleeve, 6-pressure washer, 7-preload nut, 8-locking nut. Detailed Implementation

[0013] Reference will now be made in detail to embodiments of the present disclosure, one or more of which are set forth herein. Each embodiment and example is provided by way of explanation of the apparatus, composition, and materials of the present disclosure, and not by way of limitation. Rather, the following description provides convenient illustrations for implementing exemplary embodiments of the present disclosure. Indeed, it will be apparent to those skilled in the art that various modifications and variations can be made to the teachings of the present disclosure without departing from the scope or spirit of the present disclosure.

[0014] like Figure 1 As shown, this utility model discloses a cylinder support installation structure for a coal mill hydraulic system. The installation structure consists of four sets, positioned at the four corners of the cylinder support 3 for fixing the cylinder support 3. The number of installation structures can be adjusted based on bolt strength and cylinder support fixing requirements. The installation structure includes a nut block 2 pre-installed in the coal mill base plate 1 and a double-ended bolt 4 passing through the cylinder support 3 and connected to the nut block 2. A fixing sleeve 5 is sleeved on the outside of the double-ended bolt 4. One end of the fixing sleeve 5 abuts against the surface of the cylinder support 3, and the other end is locked and fixed by a double nut structure threaded to the end of the double-ended bolt 4. The installation and fixing of the cylinder support 3 is completed by the double-ended bolt 4 and the fixing sleeve 5.

[0015] The present invention features a clamping washer 6 between the double nut structure and the end of the fixed sleeve 5. The clamping washer 6 separates the fixed sleeve 5 and the corresponding nut, thereby preventing the equipment from affecting the double nut structure, ensuring the locking and fixing effect of the double-ended bolt, preventing loosening, and preventing the double-ended bolt from being sheared due to loose connection, which would affect the operation of the hydraulic cylinder.

[0016] In a specific embodiment, the double-nut structure of this utility model includes a preload nut 7 that mates with the clamping washer 6, and a locking nut 8 disposed at the outer end of the preload nut 7. The preload nut 7 provides clamping force to the fixing sleeve 5, and the locking nut 8 locks and fixes the preload nut 7. The double-nut structure can apply axial tensile force to the double-ended bolt through the abutment of the fixing sleeve, thereby increasing the friction of the threaded contact surface and increasing the upper limit of the force that causes the nut to loosen. At the same time, as a preferred embodiment, the cylinder support 3 of this utility model can be provided with a groove on the surface that mates with the fixing sleeve 5. After the cylinder support 3 is connected and fixed, the bottom of the fixing sleeve 5 is located in the groove. The fixing sleeve 5 can share part of the shear force on the double-ended bolt, improve the strength of the installation structure, and thus further improve the service life of the double-ended bolt.

[0017] By using the installation structure of this utility model to install and fix the cylinder support, the probability of bolt loosening can be effectively reduced, thereby ensuring the stability of the installation and maintaining the continuous operation of the hydraulic cylinder. At the same time, the design of the fixing sleeve embedded in the cylinder support further enhances the overall strength of the installation structure and can extend its service life.

[0018] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A cylinder support mounting structure for a coal mill hydraulic system, characterized in that, The system includes a nut block (2) pre-installed in the base plate (1) of the coal mill and a double-ended bolt (4) connected to the nut block (2) inside the cylinder support (3). A fixing sleeve (5) is sleeved on the outside of the double-ended bolt (4). One end of the fixing sleeve (5) abuts against the surface of the cylinder support (3), and the other end is locked and fixed by a double nut structure at the end of the double-ended bolt (4) through a threaded connection. The cylinder support (3) is installed and fixed by the double-ended bolt (4) and the fixing sleeve (5).

2. The cylinder support mounting structure for a coal mill hydraulic system according to claim 1, characterized in that, A clamping washer (6) is provided between the double nut structure and the end of the fixed sleeve (5) to separate the fixed sleeve (5) and the corresponding nut.

3. The cylinder support mounting structure for a coal mill hydraulic system according to claim 2, characterized in that, The double nut structure includes a preload nut (7) that cooperates with the compression washer (6), and a locking nut (8) located at the outer end of the preload nut (7). The preload nut (7) provides a clamping force to the fixed sleeve (5), and the locking nut (8) locks and fixes the preload nut (7).

4. The cylinder support mounting structure for a coal mill hydraulic system according to claim 2, characterized in that, The number of installation structures is four sets, which are set at the four corners of the cylinder support (3) to fix the cylinder support (3).

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