A cylinder coupling structure

Abstract

This utility model relates to a hydraulic cylinder connector structure, belonging to the field of roller mill equipment. The technical solution is as follows: a hydraulic cylinder connector structure includes a connector body, which includes a hinge ring. A connecting portion is provided on the outer periphery of the hinge ring, and the end of the connecting portion away from the hinge ring is cylindrical. It also includes a ring sleeve, which comprises two ring sleeve units, each semi-cylindrical, joined together to form a cylindrical body. One end of the ring sleeve is fastened around the outer periphery of the connecting portion, and the other end is used to surround the telescopic rod connecting the hydraulic cylinder. This utility model replaces the original threaded connection with a ring sleeve connection composed of two semi-cylindrical ring sleeve units. One end of the ring sleeve clamps the connector, and the other end clamps the telescopic rod connecting the hydraulic cylinder. When the hydraulic cylinder needs to be replaced, the ring sleeve is disassembled to separate the hydraulic cylinder from the upper connector, achieving convenient online disassembly of the hydraulic cylinder. This simplifies the replacement process and shortens the hydraulic cylinder replacement time.

Description

Technical Field

[0001] This utility model relates to the field of roller vertical mill equipment, and in particular to a hydraulic cylinder connecting head structure. Background Technology

[0002] The roller mill is a high-efficiency grinding equipment integrating crushing, grinding, drying, and classification conveying. It is widely used in the grinding and processing of materials such as slag and coal gangue. Its working principle involves the rolling and pressing of grinding rollers on a grinding disc to crush and grind the material into fine powder. Simultaneously, hot air dries the material, and finally, a classifier classifies the ground material to meet different fineness requirements. The pressure cylinder is one of the core components, its main function being to provide continuous and stable pressure to the grinding rollers. Through the force of the pressure cylinder, the grinding rollers can be tightly pressed against the material layer on the grinding disc, ensuring that the material receives sufficient compression and grinding force between the rollers and the grinding disc.

[0003] The pressure cylinder currently uses a threaded connection structure, where the connecting head and piston are connected by threads. This structure is fixed during assembly by the engagement of the threads. The connecting head is connected to the frame containing the grinding roller via a pin, forming a connection method that combines threaded connection and pin engagement. This method is used to stably transmit the force of the pressure cylinder to the grinding roller and other related components, ensuring the normal pressurization operation of the vertical mill.

[0004] However, the threaded and pin-connected configuration limits the replacement of the connector or cylinder. The pin restricts the connector's rotation, making it impossible to unscrew it. Furthermore, the pin is prone to deformation due to long-term stress, resulting in a tight fit between the pin and the shaft hole. Combined with limited installation space, this makes disassembly of the pin extremely inconvenient. To save time, destructive removal of the pin is often necessary, which not only wastes pin material but also increases replacement costs. Summary of the Invention

[0005] This invention addresses the problem that current hydraulic cylinder connectors are connected to the cylinder via threads, and the threads are locked after the connector is installed with a pin, making it impossible to directly disassemble and replace the cylinder. It provides a hydraulic cylinder connector structure that is easy to disassemble.

[0006] To solve the above problems, the technical solution adopted by this utility model is a hydraulic cylinder connector structure, including a connector body, the connector body including a hinge ring, a connecting portion provided on the outer periphery of the hinge ring, the end of the connecting portion away from the hinge ring being cylindrical; and a ring sleeve, the ring sleeve including two ring sleeve units, each of the two ring sleeve units being semi-cylindrical, the two ring sleeve units being joined together to form a cylindrical body, one end of the ring sleeve being fastened around the outer periphery of the connecting portion, and the other end of the ring sleeve being used to surround the telescopic rod connecting the hydraulic cylinder. This utility model replaces the original threaded connection with a ring sleeve connection composed of two semi-cylindrical ring sleeve units. One end of the ring sleeve clamps the connector, and the other end clamps the telescopic rod connecting the hydraulic cylinder. When the hydraulic cylinder needs to be replaced, the ring sleeve is disassembled to separate the hydraulic cylinder from the upper connector, realizing convenient online disassembly of the hydraulic cylinder. This simplifies the replacement process and shortens the hydraulic cylinder replacement time.

[0007] As a preferred embodiment of the hydraulic cylinder connector structure, each of the two straight edges of the ring sleeve unit is provided with a connecting plate. The connecting plate extends outward along the axial section at the straight edge and has multiple through holes. When two ring sleeve units are located on the same side, the connecting plates are fitted together and connected by multiple first-pair locking bolts, which pass through the through holes of the connecting plate. The tightening effect of the multiple first-pair locking bolts enhances the overall rigidity and connection reliability of the ring sleeve, preventing loosening or displacement during the operation of the hydraulic cylinder and ensuring the normal force transmission of the pressurized hydraulic cylinder. At the same time, the bolt connection method facilitates disassembly, further improving the efficiency of hydraulic cylinder replacement.

[0008] As a preferred embodiment of the hydraulic cylinder connector structure, the outer diameter of the end of the connector is set to be the same as the diameter of the telescopic rod of the hydraulic cylinder to be connected; let the inner diameter of the ring be d, and the outer diameter of the end of the connector be D, where d ≥ 0.95D. By making the inner diameter of the ring slightly smaller than the diameter of the connector and the hydraulic cylinder telescopic rod, deformation occurs during the clamping process of the ring, resulting in a tighter fit with the connector and the telescopic rod, thus improving the connection tightness.

[0009] As a preferred embodiment of the hydraulic cylinder connector structure, a third connecting hole is radially through the connecting part, and two locking holes are provided on the ring sleeve at the two ends corresponding to the third connecting hole. A third pair of locking bolts are provided in the third connecting hole and the locking holes at both ends. This creates a rigid connection limit between the ring sleeve and the connector in the pull-out direction, further fixing the ring sleeve and the connecting part, preventing relative movement of the ring sleeve in the axial or circumferential direction, and strengthening the connection between the two.

[0010] As a preferred embodiment of the hydraulic cylinder connector structure, a fourth connecting hole is radially drilled through the hydraulic cylinder telescopic rod to be connected. Two locking holes are provided on the ring sleeve corresponding to the two ends of the fourth connecting hole. A third pair of locking bolts are provided in both the fourth connecting hole and the locking holes at both ends. This allows the ring sleeve to form a rigid connection with both the connecting part and the hydraulic cylinder telescopic rod, achieving direct fastening between the ring sleeve and the hydraulic cylinder telescopic rod, ensuring effective force transmission between the hydraulic cylinder and the connector, and preventing relative sliding of the connecting parts.

[0011] As a preferred embodiment of the hydraulic cylinder connector structure, the end face of the connector has an internally threaded hole, in which an extension section is installed. The extension section includes a threaded section and a cylindrical section. The threaded section is threadedly connected to the internally threaded hole, and the outer diameter of the cylindrical section is the same as the outer diameter of the connector. It also includes a threaded cap, the internal thread of which is adapted to the end thread of the hydraulic cylinder telescopic rod to be connected. The outer diameter of the threaded cap is the same as the outer diameter of the cylindrical section. The cylindrical section and the threaded cap are clamped between two ring sleeve units. By utilizing the existing structure of the connector and telescopic rod, and installing the extension section and threaded cap, the connection area with the ring sleeve is increased, improving the tightness of the connection. Furthermore, it can be installed without modifying the original connector and telescopic rod, improving the load-bearing capacity and reliability of the entire connector structure and extending the service life of the equipment.

[0012] As a preferred embodiment of the hydraulic cylinder connector structure, the cylindrical section has a first connecting hole extending through both ends radially, and the threaded cap has a second connecting hole extending through both ends radially. The ring sleeve has four locking holes corresponding to the ends of the first and second connecting holes. A second pair of locking bolts is provided in the first connecting hole and the locking holes at both ends, and another second pair of locking bolts is provided in the second connecting hole and the locking holes at both ends. The cylindrical section of the extension section has a first connecting hole, the threaded cap has a second connecting hole, and the ring sleeve has corresponding locking holes. The second pair of locking bolts passes through the first connecting hole and the corresponding locking hole, and the second connecting hole and the corresponding locking hole, respectively, to fix the extension section, the threaded cap, and the ring sleeve, further strengthening the connection between the extension section, the threaded cap, and the ring sleeve, and ensuring the stability of the overall structure.

[0013] As a preferred embodiment of the hydraulic cylinder connector structure, multiple first-pair locking bolts are arranged axially on the connecting plate. The axial arrangement of these bolts ensures that the ring sleeve is subjected to tightening forces at multiple axial positions, guaranteeing a tight fit between the ring sleeve and the connecting part, as well as the hydraulic cylinder telescopic rod, across all axial segments, and evenly distributing the force.

[0014] As can be seen from the above technical solution, the advantages of this utility model are as follows: This solution adopts a clamping structure composed of two semi-cylindrical ring sleeve units, which realizes convenient disassembly of the hydraulic cylinder, avoids material waste caused by destructive disassembly, simplifies the replacement process, and shortens the hydraulic cylinder replacement time; the connecting plates on both sides of the ring sleeve unit are fastened by multiple first pair locking bolts, which not only enhances the overall rigidity and connection reliability of the ring sleeve, prevents loosening and displacement during operation, and ensures stable force transmission, but also improves the hydraulic cylinder replacement efficiency because the bolt connection facilitates disassembly; the outer diameter of the connecting part end is the same as the diameter of the hydraulic cylinder telescopic rod, and the inner diameter of the ring sleeve is adapted to the outer diameter of the connecting part end, so that the ring sleeve fits more tightly with both, improving the connection tightness; the connecting part and the hydraulic cylinder telescopic rod are respectively The ring is fixed to the third pair of locking bolts, forming a rigid connection limit to prevent axial or circumferential movement of the ring, enhancing connection stability, avoiding relative sliding of the connection parts, and ensuring effective force transmission. The extension section and threaded cap increase the connection area with the ring by utilizing the original structure, allowing for installation without modifying the original components, improving structural load-bearing capacity and reliability, and extending the service life of the equipment. The second pair of locking bolts further strengthens the connection between the extension section, threaded cap, and ring, ensuring overall stability. The first pair of locking bolts on the connecting plate are arranged axially, allowing the ring to be stressed at multiple axial positions, ensuring tight fit between the ring and the connecting part and each axial section of the cylinder telescopic rod, achieving uniform force distribution, reducing local wear, and extending the service life of the components. Attached Figure Description

[0015] To more clearly illustrate the technical solution of this utility model, the drawings used in the description will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a structural schematic diagram of Embodiment 1 of the present utility model.

[0017] Figure 2 This is an exploded view of Embodiment 1 of the present invention.

[0018] Figure 3 This is an exploded view of Embodiment 2 of the present invention.

[0019] Explanation of main figure symbols 1. Connector body, 1-1. Hinge ring, 1-2. Connecting part, 1-3. Internal threaded hole, 1-4. Third connecting hole, 2. Ring sleeve, 2-1. Ring sleeve unit, 2-2. Connecting plate, 2-3. Locking hole, 3. First pair of locking bolts, 4. Extension section, 4-1. Threaded section, 4-2. Cylindrical section, 4-3. First connecting hole, 5. Threaded cap, 5-1. Second connecting hole, 6. Second pair of locking bolts, 7. Third pair of locking bolts, 8. Fourth connecting hole, 9. Telescopic rod. Detailed Implementation

[0020] To make the objectives, features, and advantages of this utility model more apparent and understandable, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings of the specific embodiments. Obviously, the embodiments described below are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this patent, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this patent.

[0021] Example 1 like Figure 1 , 2 As shown, a hydraulic cylinder connector structure includes a connector body 1 and a ring sleeve 2. The connector body 1 includes a hinge ring 1-1, and a connecting portion 1-2 is provided on the outer periphery of the hinge ring 1-1. The end of the connecting portion 1-2 away from the hinge ring 1-1 is cylindrical. An internal threaded hole 1-3, originally used to connect the telescopic rod 9 of the hydraulic cylinder, is provided on the end face of the connecting portion 1-2 (when connecting with the connector structure of this embodiment, the internal threaded hole 1-3 is not connected). The ring sleeve 2 includes two ring sleeve units 2-1, each of which is semi-cylindrical. Two connecting plates 2-2 are respectively provided on the straight edges of the sleeve unit 2-1. The connecting plates 2-2 extend outward along the axial section at the straight edge. The two sleeve units 2-1 are joined together to form a cylindrical body. Multiple through holes are opened on the connecting plates 2-2. One end of the ring 2 is fastened around the outer circumference of the connecting part 1-2. When the connecting plates 2-2 of the two sleeve units 2-1 are on the same side, they are close to each other and connected by multiple first pair of locking bolts 3. The first pair of locking bolts 3 pass through the through holes of the connecting plates 2-2. The other end of the ring 2 is used to surround the telescopic rod 9 of the connecting cylinder.

[0022] A third connecting hole 1-4 is radially through the connecting part 1-2. Two locking holes 2-3 are provided on the ring sleeve 2 at the two ends corresponding to the third connecting hole 1-4. A third pair of locking bolts 7 are provided in the third connecting hole 1-4 and the locking holes 2-3 at both ends. A fourth connecting hole 8 is radially through the hydraulic cylinder telescopic rod 9 to be connected. Two locking holes 2-3 are provided on the ring sleeve 2 at the two ends corresponding to the fourth connecting hole 8. Another third pair of locking bolts 7 are provided in the fourth connecting hole 8 and the locking holes at both ends. Multiple first pair of locking bolts 3 are arranged axially on the connecting plate 2-2.

[0023] When using this connector structure, the connecting part 1-2 is connected to the telescopic rod 9 without threading. Then, the two ring-shaped units 2-1 are joined together on both sides of the connecting part 1-2 and the telescopic rod 9. The first pair of locking bolts 3 are then installed into the paired through holes and tightened. Finally, the two third pairs of locking bolts 7 are installed, thus completing the installation of the telescopic rod 9.

[0024] Furthermore, the outer diameter of the end of the connecting part 1-2 is set to be the same as the diameter of the telescopic rod 9 of the hydraulic cylinder to be connected; let the inner diameter of the ring sleeve 2 be d, and the outer diameter of the end of the connecting part 1-2 be D, where d≥0.95D. During the installation process, the diameter difference causes the ring sleeve to undergo slight deformation, thereby fitting more tightly to the connecting part 1-2 and the telescopic rod 9.

[0025] Example 2 This embodiment is based on the same principle as Embodiment 1, but structurally, as follows: Figure 3 As shown, in order to make full use of the original structure of the connector 1 and the telescopic rod 9 (i.e., the internal threaded hole 1-3 and the thread at the end of the telescopic rod 9), this embodiment further includes an extension section 4 and a threaded cap 5: the extension section 4 includes a threaded section 4-1 and a cylindrical section 4-2, the threaded section 4-1 is threadedly connected to the internal threaded hole 1-3, and the outer diameter of the cylindrical section 4-2 is the same as the outer diameter of the connector 1-2; it also includes a threaded cap 5, the internal thread of the threaded cap 5 is adapted to the end thread of the hydraulic cylinder telescopic rod 9 to be connected, the outer diameter of the threaded cap 5 is the same as the outer diameter of the cylindrical section 4-2, and the cylindrical section 4-2 and the threaded cap 5 are clamped between two ring-shaped units 2-1. The cylindrical section 4-2 has a first connecting hole 4-3 that passes through both ends in the radial direction. The threaded cap 5 has a second connecting hole 5-1 that passes through both ends in the radial direction. The ring sleeve 2 has four locking holes 2-3 at the positions corresponding to the two ends of the first connecting hole 4-3 and the two ends of the second connecting hole 5-1. The first connecting hole 4-3 and the locking holes 2-3 at both ends are provided with a second pair of locking bolts 6. The second connecting hole 5-1 and the locking holes 2-3 at both ends are provided with another second pair of locking bolts 6.

[0026] As can be seen from the above embodiments, the beneficial effects of this utility model are as follows: This solution adopts a clamping structure composed of two semi-cylindrical ring sleeve units, which not only makes the disassembly of the hydraulic cylinder convenient and avoids the material waste caused by destructive disassembly, but also simplifies the replacement process and shortens the hydraulic cylinder replacement time; the connecting plates on both sides of the ring sleeve unit are fastened by multiple first pair locking bolts, which not only enhances the overall rigidity and connection reliability of the ring sleeve, prevents loosening and displacement during operation, and ensures stable force transmission, but also further improves the hydraulic cylinder replacement efficiency because the bolt connection is easy to disassemble; the outer diameter of the connecting part end is the same as the diameter of the hydraulic cylinder telescopic rod, and the inner diameter of the ring sleeve is adapted to the outer diameter of the connecting part end, so that the ring sleeve fits more tightly with both, improving the connection tightness; the connecting part and the hydraulic cylinder telescopic rod are separate The ring is fixed to the third pair of locking bolts, forming a rigid connection limit, which prevents the ring from moving axially or circumferentially, enhances connection stability, avoids relative sliding at the connection points, and ensures effective force transmission. The extension section and threaded cap can increase the connection area with the ring using the existing structure, and can be installed without modifying the original components, improving the structural load-bearing capacity and reliability, and extending the service life of the equipment. The second pair of locking bolts further strengthens the connection between the extension section, threaded cap, and ring, ensuring overall stability. The first pair of locking bolts on the connecting plate are arranged axially, so that the ring is subjected to force at multiple axial positions, ensuring that the ring fits tightly with the connecting part and each axial section of the cylinder telescopic rod, achieving uniform force distribution, reducing local wear, and extending the service life of the components.

[0027] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A hydraulic cylinder coupling structure, comprising a coupling body (1), characterized in that, The main body (1) of the connector includes a hinge ring (1-1), and a connecting part (1-2) is provided on the outer periphery of the hinge ring (1-1). The end of the connecting part (1-2) away from the hinge ring (1-1) is cylindrical. It also includes a ring sleeve (2), which includes two ring sleeve units (2-1). The two ring sleeve units (2-1) are semi-cylindrical and are joined together to form a cylindrical body. One end of the ring sleeve (2) is fastened around the outer periphery of the connecting part (1-2), and the other end of the ring sleeve (2) is used to surround the telescopic rod (9) of the connecting cylinder.

2. The hydraulic cylinder connector structure according to claim 1, characterized in that, The two straight edges of the ring-shaped unit (2-1) are respectively provided with connecting plates (2-2). The connecting plates (2-2) extend outward along the axial section at the straight edge. Multiple through holes are provided on the connecting plates (2-2). When the connecting plates (2-2) of the two ring-shaped units (2-1) are located on the same side, they are attached to each other and connected by multiple first pair of locking bolts (3). The first pair of locking bolts (3) pass through the through holes of the connecting plates (2-2).

3. The hydraulic cylinder connector structure according to claim 1, characterized in that, The outer diameter of the end of the connecting part (1-2) is set to be the same as the diameter of the telescopic rod of the oil cylinder to be connected; the inner diameter of the ring sleeve (2) is d, and the outer diameter of the end of the connecting part (1-2) is D, where d≥0.95D.

4. The hydraulic cylinder coupling structure according to any one of claims 1-3, characterized in that, The connecting part (1-2) is provided with a third connecting hole (1-4) through it in the radial direction. The ring sleeve (2) is provided with two locking holes (2-3) at the positions corresponding to the two ends of the third connecting hole (1-4). The third connecting hole (1-4) and the locking holes (2-3) at both ends are provided with a third pair of locking bolts (7).

5. The hydraulic cylinder connector structure according to claim 4, characterized in that, A fourth connecting hole (8) is radially opened on the cylinder telescopic rod to be connected. Two other locking holes (2-3) are set on the ring sleeve (2) at the positions corresponding to the two ends of the fourth connecting hole (8). Another third pair of locking bolts (7) are set in the fourth connecting hole (8) and the locking holes at both ends.

6. The hydraulic cylinder connector structure according to claim 1, characterized in that, The end face of the connecting part (1-2) is provided with an internal threaded hole (1-3), and an extension section (4) is installed in the internal threaded hole (1-3). The extension section (4) includes a threaded section (4-1) and a cylindrical section (4-2). The threaded section (4-1) is threadedly connected to the internal threaded hole (1-3). The outer diameter of the cylindrical section (4-2) is the same as the outer diameter of the connecting part (1-2). It also includes a threaded cap (5). The internal thread of the threaded cap (5) is adapted to the end thread of the hydraulic cylinder telescopic rod to be connected. The outer diameter of the threaded cap (5) is the same as the outer diameter of the cylindrical section (4-2). The cylindrical section (4-2) and the threaded cap (5) are clamped between two ring units (2-1).

7. The hydraulic cylinder connector structure according to claim 6, characterized in that, The cylindrical section (4-2) has a first connecting hole (4-3) that passes through both ends in the radial direction. The threaded cap (5) has a second connecting hole (5-1) that passes through both ends in the radial direction. The ring sleeve (2) has four locking holes (2-3) at the positions corresponding to the two ends of the first connecting hole (4-3) and the two ends of the second connecting hole (5-1). The first connecting hole (4-3) and the locking holes (2-3) at both ends are provided with a second pair of locking bolts (6). The second connecting hole (5-1) and the locking holes (2-3) at both ends are provided with another second pair of locking bolts (6).

8. The hydraulic cylinder connector structure according to claim 2, characterized in that, On the connecting plate (2-2), a plurality of the first pair of locking bolts (3) are arranged axially.

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