CN115853903A - Detachable bearing bush type water-lubricated bearing - Google Patents

Abstract

The invention discloses a detachable bearing bush type water-lubricated bearing, and belongs to the technical field of marine shafting. The bearing comprises a bearing bush, a split bearing bush, a stop ring, a locking device and a dismounting assembly; the split bearing bush is manufactured by adopting an integral forming process, and then the bearing bush is processed into a two-half structure by adopting a machining mode; the split bearing bush is assembled in the bearing bush and bears the circumferential force of the split bearing bush during tensioning, and the end face of the bearing bush is provided with a stop ring to prevent the bearing bush from axially moving; the locking device is arranged on a joint surface on one side of the split bearing bush, and a part in the locking device generates a tensioning force by moving along the axial direction of the bearing so as to fasten the split bearing bush; the disassembly assembly is fixedly arranged on one side end face of the split bearing bush, and when the split bearing bush needs to be disassembled, the disassembly assembly is matched with an external tool to pull out the bearing bush along the axial direction. The invention can repair and replace the bearing bush without drawing out the main shaft, thereby greatly reducing the cost of the water lubrication bearing during repair and replacement.

Description

A detachable pad type water lubricated bearing

technical field

The invention belongs to the technical field of ship shafting, and in particular relates to a detachable bush type water lubricated bearing.

Background technique

At present, there are two main structural forms of hydraulic bearings widely used in our country: integral type and slat type. The integral type bearing is to install the bearing material directly inside the metal bushing in the form of vulcanization or interference installation. Slatted water-lubricated bearings, screw holes are set on the bearing shell slats, and the back of the slats is fixed to the inner surface of the bearing bush through screws.

After the water-lubricated bearings of the above two structural forms are worn or damaged, the propeller and the shaft need to be removed first, and the bearing bushing should be pulled out from the shaft hub, and then the relevant replacement or maintenance work can be carried out, maintenance cycle and maintenance work The quantity is large, the site conditions are harsh, and the maintenance performance is poor. At the same time, the bearing bush will be deformed during the disassembly process, which cannot be reused, and the economic performance is not good.

Contents of the invention

In view of this, the present invention provides a detachable bearing pad type water-lubricated bearing, which can perform maintenance and replacement of the bearing pad without pulling out the main shaft, thereby greatly reducing the cost of maintenance and replacement of the water-lubricated bearing.

A detachable bearing pad type water-lubricated bearing, including a bearing bush, a split bearing pad, a stop ring, a locking device and a disassembly assembly;

The split bearing bush is made by one-piece molding process, and then the bearing bush is processed into two halves by machining;

The bearing bush is equipped with a split bearing bush inside, which bears the circumferential force of the split bearing bush when it is tightened, and a stop ring is installed on the end face of the bearing bush to prevent the axial movement of the bearing bush;

The locking device is installed on the joint surface on one side of the split bearing, and the components in the locking device move along the axial direction of the bearing to generate tension to fasten the split bearing;

The dismantling assembly is fixedly installed on one end surface of the split bearing pad, and when the split bearing pad needs to be disassembled, the bearing pad is pulled out axially with the aid of an external tool in cooperation with the dismantling assembly.

Further, the split bearing pad includes a split upper bearing pad and a split lower bearing pad. The split upper bearing pad and the split lower bearing pad are butted to form a complete bearing pad structure, and one side of the two sides is butted It is processed into a normal direction perpendicular to the inner surface of the bearing pad, and the split bearing pad is combined at this position, and the other side is processed into a structure suitable for the locking device, which can bear the circumferential extrusion force when the locking device is locked. At the same time, the structure of the bearing pad in this area includes the locking device inside the bearing pad and maintains the surface shape inside the bearing pad to ensure that the cooling water is in a good flow and lubricated state inside the bearing pad.

Further, there is a space for the locking device to enter and exit in the stop ring. When the bearing pad needs to be repaired and disassembled, the stop ring is firstly disassembled from the bearing bush, and enough split half-bearing bushes are moved on the main shaft. Stop after dismantling the operating space.

Further, the locking device includes a fixing plate, a pressing plate, a pressing plate and locking bolts; the fixing plate is mounted and fastened on the bearing bush through back screws, and the joint surface of the fixing plate and the pressing plate is an inclined plane, When the pressure plate moves axially along the fixed plate, it will move in the circumferential direction to generate tension to fasten the split bearing bush. Grooves and ribs are processed on the joint surface of the pressure plate and the fixed plate. When the plate is pressed, the movement of the ribs in the groove can ensure the guiding of the pressing plate during the movement. When installed in place, the concave-convex groove structure can ensure that no normal displacement will occur when the external force is applied. When the locking device is installed After being in place, use the pressing plate and locking bolts to fix the pressing plate and the fixing plate.

Further, the disassembly assembly includes a ring block and a screw rod; the ring block is embedded and installed inside the split bearing pad through the back of the bearing pad, and the ring block is sealed with sealant after the ring block is installed in place. There are threaded holes on the side of the ring block, and corresponding Open a corresponding process hole in the body of the split bearing, screw the screw into the ring block through the process hole, the other side of the screw protrudes from the outside of the split bearing, and its end is also processed with threads, when it is necessary to disassemble the split When the split bearing is used, the threaded sleeve is connected with the screw thread to pull out the split bearing.

Beneficial effect:

1. The detachable bearing bush type water-lubricated bearing of the present invention is installed on the outboard part of the ship shafting. The bearing bush has a two-half split structure, and a good water guide groove structure is processed inside the bearing bush to ensure the cooling and lubricating effect of the bearing during operation. The locking device is set on the outside of the bearing bush, which minimizes the influence on the cooling water flow and lubrication inside the bearing bush. When it is necessary to repair and replace the bearing bush, it is only necessary to jack up the main shaft, loosen the stop ring and the locking device, and use The upper and lower split bearing bushes can be easily disassembled by connecting the tools with the disassembly components, which greatly saves the construction period and labor intensity.

2. The normal assembly process of the water-lubricated bearing of the present invention is simple, and there is no need to use complex bearing pad materials on the bushing vulcanization process or freezing installation process, and the installation can be completed by simply pressing the compression plate to the specified position along the axial direction .

3. The brake of the bearing bush of the present invention is more secure. The axial direction of the bearing bush is blocked by the stop ring, and the circumferential direction is blocked by the locking device. Both the stop ring and the locking device are installed on the bearing bush by screws , so the bearing pad is firmly fixed inside the bearing bush.

4. In the locking device of the present invention, when the pressing plate moves axially along the fixed plate, it will move in the circumferential direction to generate tension to fasten the split bearing pad, so the lock can be determined according to the actual working conditions of the bearing pad. The interference of the locking device, when the bearing is running at different temperatures, the degree of interference of the locking device can be designed accordingly.

Description of drawings

Figure 1 is a schematic diagram of the overall structure of the detachable pad type water-lubricated bearing of the present invention;

Fig. 2 is the side view of Fig. 1;

Fig. 3 is a structural schematic diagram of a split bearing;

Fig. 4 is the side view of Fig. 3;

Fig. 5 is the structural representation of locking device;

FIG. 6 is a cross-sectional view along line A-A of FIG. 5 .

Among them, 1-bearing bushing, 2-fixing plate screw, 3-locking device, 4-split bearing bush, 5-stop ring screw, 6-stop ring, 7-disassembly assembly, 8-ring block, 9-removal screw, 10-fixing plate, 11-pressing plate, 12-locking block, 13-locking screw.

Detailed ways

The present invention will be described in detail below with reference to the accompanying drawings and examples.

The present invention provides a detachable bearing pad type water-lubricated bearing, as shown in Figures 1 and 2, the water-lubricated bearing includes a bearing bush 1, a fixing plate screw 2, a locking device 3, a split bearing pad 4, a stopper Ring screw 5, stop ring 6, disassembly assembly 7, ring block 8, disassembly screw 9, fixing plate 10, pressing plate 11, locking block 12 and locking screw 13.

The bearing bush 1 is the overall support structure of the stern bearing. The split bearing bush 4 is installed inside the bearing bush 1 to bear the circumferential force of the split bush 4 when it is tightened. Ring 6, to prevent the bearing bush from moving in the axial direction. When the bearing bush needs to be disassembled, the stop ring screw 5 can be loosened, and the stop ring 6 can be moved to the space where the disassembly operation can be performed. There are screws on the back of the bearing bush 1 hole, the fixing plate screw 2 is screwed into the fixing plate 10 from the back of the stern bearing bush, and the fixing plate 10 is reliably fastened on the inner side of the bearing bushing 1.

As shown in Figures 3 and 4, the bearing pad 4 of the water-lubricated bearing is a split-type upper and lower half structure, and an axial flow groove is processed inside the bearing pad, and cooling water flows inside the bearing pad flow groove to ensure the performance of the bearing during operation. , the upper and lower bearings are in direct contact with the split surface on the left side of the equipment, and the upper and lower bearings are processed with a back groove structure on the right side of the equipment. The locking device 3 is installed inside the structure, and the surface maintains a normal arc shape without affecting For the hydrodynamic characteristics inside the stern bearing, the circumferential tension generated after the locking device 3 is installed in place squeezes the side of the bearing bush, so that the bearing bush 4 is tightly installed inside the bearing bush 1 .

The dismantling assembly 7 is installed and fixed in the stern bearing bushing 4. Two sets of dismantling assemblies are respectively installed on the upper and lower split bearing bushes. The dismantling assembly 7 is composed of a ring block 8 and a dismantling screw 9. The ring block 8 is placed through the hole on the back of the bearing pad. Behind the inside of the bearing bush 4, the surface is filled and sealed with epoxy cement. There are threaded holes on the side of the ring block 8. Correspondingly, there are corresponding process holes on the same side of the bearing bush. The screw 9 is screwed into the ring block 8 through the process hole. Inside, the other side of the screw protrudes from the outside of the bearing bush 4, and its end is also processed with threads. When it is necessary to disassemble the bearing bush, connect the external sleeve tool to the thread of the screw, and work evenly on both sides to remove the stern bearing bush from the bushing. out.

As shown in FIG. 5 , the locking device 3 is composed of a fixing plate 10 , a pressing plate 11 , a locking block 12 and a locking screw 13 . The fixing plate 10 is installed and fastened on the bearing bush 1 through the fixing plate screws 2. The joint surface of the fixing plate 10 and the pressing plate 11 is a wedge-shaped inclined surface. When the pressing plate 11 moves axially on the fixing plate 10, a circumferential When the locking device is installed in place, the split bearing bush 4 is reliably fixed inside the bearing bush 1 by the limit and extrusion force of the locking device itself.

As shown in accompanying drawing 6, grooves and ribs are machined on the joint surfaces of the fixing plate 10 and the pressing plate 11 respectively. During the axial movement and pressing of the pressing plate 11, the ribs move along the axial direction in the groove. It can ensure that the pressure plate has good guidance during the pressing process of the pressure plate 11, and ensure the smooth assembly process. At the same time, the assembly structure design of the rib-groove can ensure that the locking device 3 can always ensure the overall Reliable combination, when the locking device 3 is installed in place, the fixing plate 10 and the pressing plate 11 are further fixed by the locking block 12 and the locking screw 13, so as to ensure the reliability of the locking device during operation.

To sum up, the above are only preferred embodiments of the present invention, and are not intended to limit the protection scope of the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the protection scope of the present invention.

Claims (5)

1. A detachable bearing pad type water-lubricated bearing, characterized in that it includes a bearing bush, a split bearing pad, a stop ring, a locking device and a disassembly assembly; The split bearing bush is made by one-piece molding process, and then the bearing bush is processed into two halves by machining; The bearing bush is equipped with a split bearing bush inside, which bears the circumferential force of the split bearing bush when it is tightened, and a stop ring is installed on the end face of the bearing bush to prevent the axial movement of the bearing bush; The locking device is installed on the joint surface on one side of the split bearing, and the components in the locking device move along the axial direction of the bearing to generate tension to fasten the split bearing; The dismantling assembly is fixedly installed on one end surface of the split bearing pad, and when the split bearing pad needs to be disassembled, the bearing pad is pulled out axially with the aid of an external tool in cooperation with the dismantling assembly. 2. A detachable bearing pad type water-lubricated bearing according to claim 1, wherein the split bearing pad includes a split upper bearing pad and a split lower bearing pad, and the split upper bearing pad and the split bearing pad The complete bearing structure is formed after the butt joint of the lower bearing pad. One of the two sides of the butt joint is processed into a normal direction perpendicular to the inner surface of the bearing pad. The split bearing pad is combined at this position, and the other side is processed into a locking device. The suitable structural form bears the circumferential extrusion force when the locking device is locked. At the same time, the bearing pad structure in this area includes the locking device inside the bearing pad and maintains the surface shape inside the bearing pad. 3. A detachable bearing pad type water-lubricated bearing according to claim 2, characterized in that there is a space for the locking device to enter and exit in the stop ring, and when the bearing pad needs to be repaired and disassembled, the stopper ring must first be moved The ring is removed from the bearing bushing and stops after moving enough operating space on the main shaft for split half bearing removal. 4. A detachable bush type water-lubricated bearing according to claim 3, characterized in that, the locking device includes a fixing plate, a pressing plate, a pressing plate and a locking bolt; the fixing plate is installed by back screws It is fastened on the bearing bush, and the joint surface of the fixed plate and the pressing plate is an inclined surface. When the pressing plate moves axially along the fixed plate, it will move in the circumferential direction to generate tension to fasten the split bearing bush. Grooves and ribs are processed on the joint surface of the tight plate and the fixed plate, and when the locking device is installed in place, the pressure plate and the fixed plate are fixed by the pressure plate and the locking bolt. 5. A detachable bearing pad type water-lubricated bearing according to claim 3 or 4, characterized in that the disassembly assembly includes a ring block and a screw; the ring block is embedded and installed inside the split bearing pad through the back of the bearing pad After the ring block is installed in place, it is sealed with sealant. There is a threaded hole on the side of the ring block. Correspondingly, a corresponding process hole is opened in the split bearing body, and the screw is screwed into the ring block through the process hole. The other side of the screw rod is The side protrudes from the outside of the split bearing bush, and the end is also processed with threads. When the split bearing bush needs to be disassembled, the threaded sleeve is connected with the screw thread to pull the split bearing bush out.

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