Surface treatment device for white alloy bearing of ship stern tube

Abstract

The invention relates to the technical field of bearing surface treatment, and discloses a ship stern tube white alloy bearing surface treatment device which comprises a bottom plate, a supporting barrel is fixedly installed on the upper surface of the bottom plate, a rotary table is rotatably installed at the top end of the supporting barrel, a positioning column is rotatably installed on the upper surface of the rotary table in a penetrating mode, and the positioning column is of a hollow structure. The stepping motor drives the rotary table to rotate, so that the rotary table can drive the positioning column and the bearing ring to integrally move, and when the L-shaped guide rod moves to the clamping section groove of the guide groove along with the rotary table, the L-shaped guide rod drives the extrusion disc to move downwards, so that the extrusion disc pushes the multiple clamping blocks outwards through the inclined surfaces of the clamping blocks; the multiple clamping blocks can abut against the inner wall of the bearing ring, the automatic clamping effect on the bearing ring is achieved, the situation that the grinding effect is affected due to movement of the bearing ring during grinding operation is prevented, the bearing ring does not need to be independently clamped, and the surface treatment efficiency of the bearing ring can be effectively improved.

Description

Technical Field

[0001] The invention relates to the technical field of bearing surface treatment, in particular to a surface treatment device for a white metal bearing of a ship stern tube. Background Art

[0002] The white metal bearing for ship stern tube is an important component used in the ship stern tube system. The stern tube is a key part of the ship's tail, mainly used to install and support the propeller shaft. The white metal bearing plays a role in the stern tube to carry the propeller shaft and reduce friction; during the production process of the bearing, the surface of the bearing ring must be polished and ground. The general polishing and grinding device requires personnel to hold the bearing ring for polishing and grinding during operation, which is inefficient and the control force cannot be kept consistent at all times.

[0003] An existing surface treatment device for bearing production (Announcement No.: CN217433851U) has at least the following disadvantages: the above patent places the bearing ring on the second pressure block, and the first hydraulic cylinder drives the first connecting plate and the second connecting plate to move downward until the first pressure block presses the bearing, thereby achieving a clamping effect on the bearing ring; this clamping method is relatively cumbersome and requires a separate clamping operation for the bearing ring, which affects the surface treatment efficiency of the bearing ring. Summary of the invention

[0004] The purpose of the present invention is to solve the shortcomings of the prior art and to propose a surface treatment device for a white metal bearing of a ship stern tube.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions: A surface treatment device for a white metal bearing of a stern tube of a ship comprises a base plate, a support tube is fixedly mounted on the upper surface of the base plate, a turntable is rotatably mounted on the top of the support tube, a positioning column is rotatably mounted through the upper surface of the turntable, the positioning column is a hollow structure, a clamping mechanism is mounted inside the positioning column, the clamping mechanism comprises a plurality of rectangular openings uniformly penetrated and opened on the outer surface of the positioning column in a circumferential direction, a clamping block is slidably mounted on the inner wall of each of the rectangular openings, a spring rod is fixedly mounted between the outer surface of the clamping block away from the positioning column and the inner wall of the positioning column, and an inclined surface is provided on the end of the clamping block away from the positioning column, a tightening mechanism is mounted between the positioning column and the support tube, and a grinding mechanism is mounted on the upper surface of the base plate.

[0006] As a further solution of the present invention, the tensioning mechanism includes a U-shaped plate fixedly mounted on the lower surface of the turntable, an L-shaped guide rod is inserted through the lower surface of the U-shaped plate, an extrusion disk is fixedly mounted on the top end of the L-shaped guide rod, the outer periphery of the extrusion disk is abutted against the inclined surface of the clamping block, a guide groove is provided on the inner wall of the support tube, and the end portion of the L-shaped guide rod away from the extrusion disk is slidably mounted on the inner wall of the guide groove.

[0007] As a further solution of the present invention, the guide groove includes a clamping segment groove, a holding segment groove and a releasing segment groove, and the guide groove is composed of the clamping segment groove, the holding segment groove and the releasing segment groove connected end to end.

[0008] As a further solution of the present invention, the grinding mechanism includes a vertical plate fixedly mounted on the upper surface of the base plate, and two retaining frames are symmetrically fixedly mounted on the outer surface of the vertical plate close to the support tube side, and two guide wheels are rotatably mounted between the two retaining frames. A grinding belt is provided on the outer surface between the two guide wheels, and a driving motor is fixedly mounted on the outer surface of one of the retaining frames, and the output end of the driving motor passes through the outer surface of the retaining frame and is fixedly mounted to the rotation center of one of the guide wheels.

[0009] As a further solution of the present invention, arc-shaped closed-loop grooves are provided on the outer surfaces of adjacent sides of the two retaining frames, and both side edges of the grinding belt are slidably mounted on the inner walls of the arc-shaped closed-loop grooves.

[0010] As a further solution of the present invention, a rotating mechanism is installed between the positioning column and the supporting tube, and the rotating mechanism includes a transmission gear fixedly installed on the outer surface of the bottom end of the positioning column, and an internal gear ring is fixedly installed on the inner wall of the supporting tube, and the transmission gear is meshed with the internal gear ring.

[0011] As a further solution of the present invention, a portal frame is fixedly installed on the upper surface of the base plate, a stepper motor is fixedly installed on the top wall of the portal frame, and the output end of the stepper motor passes through the top of the portal frame and is fixedly installed with the rotation center of the turntable.

[0012] As a further solution of the present invention, a limit strip is fixedly installed on the outer surface of the L-shaped guide rod in the vertical direction, and the limit strip passes through the outer surface of the U-shaped plate and is slidably installed therewith.

[0013] As a further solution of the present invention, a support ring is fixedly installed on the outer periphery of the positioning column, and the support ring is arranged above the turntable.

[0014] The beneficial effects of the present invention are: 1. The turntable is driven to rotate by a stepper motor, so that the turntable can drive the positioning column and the bearing ring to move as a whole. When the L-shaped guide rod moves with the turntable to the clamping section of the guide groove, the L-shaped guide rod will drive the extrusion plate to move downward, so that the extrusion plate pushes multiple clamping blocks outward through the inclined surface of the clamping block, so that the multiple clamping blocks can be pressed against the inner wall of the bearing ring, and the automatic clamping effect of the bearing ring is achieved, which prevents the movement of the bearing ring during the grinding operation from affecting the grinding effect, and there is no need to clamp the bearing ring separately, which can effectively improve the surface treatment efficiency of the bearing ring; 2. When the turntable drives the positioning column to move, the transmission gear installed on the outer periphery of the positioning column will roll on the internal gear ring installed on the inner wall of the support tube, so that the transmission gear can drive the positioning column to rotate, and the positioning column can drive the bearing ring to rotate through the clamping block, so that the grinding belt can evenly grind the outer periphery of the bearing ring. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the overall structure of a surface treatment device for a white metal bearing of a ship stern tube proposed by the present invention; Figure 2 This is a schematic diagram of the support tube structure of a white metal bearing surface treatment device for a ship stern tube proposed by the present invention; Figure 3 This is a schematic cross-sectional structure diagram of a turntable of a ship stern tube white metal bearing surface treatment device proposed by the present invention; Figure 4 This is a schematic diagram of the internal structure of a support tube of a ship stern tube white metal bearing surface treatment device proposed by the present invention; Figure 5 This is a schematic diagram of the internal structure of a positioning column of a white metal bearing surface treatment device for a ship stern tube proposed by the present invention; Figure 6 This is a schematic diagram of the disassembled structure of the retainer and the grinding belt of a surface treatment device for a ship stern tube white metal bearing proposed by the present invention; Figure 7 The present invention is a schematic diagram of the expanded structure of a guide groove of a white metal bearing surface treatment device for a ship stern tube.

[0016] In the figure: 1. base plate; 2. support cylinder; 3. turntable; 4. positioning column; 5. support ring; 6. clamping block; 7. spring rod; 8. extrusion plate; 9. L-shaped guide rod; 10. U-shaped plate; 11. guide groove; 111. clamping section groove; 112. holding section groove; 113. releasing section groove; 12. transmission gear; 13. internal gear ring; 14. vertical plate; 15. retaining frame; 16. guide wheel; 17. grinding belt; 18. arc closed loop slot; 19. driving motor; 20. limit strip; 21. door frame; 22. stepping motor. DETAILED DESCRIPTION

[0017] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0018] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0019] See attached Figure 1 -Attached Figure 7 , a surface treatment device for a white metal bearing of a stern tube of a ship, comprising a bottom plate 1, a support tube 2 is fixedly installed on the upper surface of the bottom plate 1, a turntable 3 is rotatably installed on the top of the support tube 2, a positioning column 4 is rotatably installed on the upper surface of the turntable 3, the positioning column 4 is a hollow structure, a clamping mechanism is installed inside the positioning column 4, the clamping mechanism comprises a plurality of rectangular openings uniformly penetrating the outer surface of the positioning column 4 in the circumferential direction, a clamping block 6 is slidably installed on the inner wall of each rectangular opening, a spring rod 7 is fixedly installed between the outer surface of the clamping block 6 away from the positioning column 4 and the inner wall of the positioning column 4, and an inclined surface is provided at the end of the clamping block 6 away from the positioning column 4, a tightening mechanism is installed between the positioning column 4 and the support tube 2, a grinding mechanism is installed on the upper surface of the bottom plate 1, a door frame 21 is fixedly installed on the upper surface of the bottom plate 1, a stepping motor 22 is fixedly installed on the top wall of the door frame 21, and the output end of the stepping motor 22 penetrates the door frame 21 The top is fixedly installed with the rotation center of the turntable 3, and a supporting ring 5 is fixedly installed on the outer periphery of the positioning column 4. The supporting ring 5 is arranged above the turntable 3, and the bearing ring sleeved on the positioning column 4 falls on the supporting ring 5, so that the supporting ring 5 can lift the bottom of the bearing ring to a certain height, so that the grinding belt 17 can better grind the outer periphery of the bearing ring. The tightening mechanism includes a U-shaped plate 10 fixedly installed on the lower surface of the turntable 3, and an L-shaped guide rod 9 is inserted through the lower surface of the U-shaped plate 10. An extrusion disk 8 is fixedly installed on the top of the L-shaped guide rod 9. The outer periphery of the extrusion disk 8 is against the inclined surface of the clamping block 6. A guide groove 11 is opened on the inner wall of the support cylinder 2, and the end portion of the L-shaped guide rod 9 away from the extrusion disk 8 is slidably installed on the inner wall of the guide groove 11. The guide groove 11 includes a clamping section groove 111, a retaining section groove 112 and a loosening section groove 113. The guide groove 11 is composed of a clamping section groove 111, a retaining section groove 112 and a loosening section groove 113 connected end to end.

[0020] When in use, the bearing ring to be polished is placed on the positioning column 4, and the turntable 3 is driven to rotate by the stepper motor 22, so that the turntable 3 can drive the positioning column 4 and the bearing ring to move as a whole. When the L-shaped guide rod 9 moves with the turntable 3 to the clamping section groove 111 of the guide groove 11, the L-shaped guide rod 9 will drive the extrusion plate 8 to move downward, so that the extrusion plate 8 pushes the multiple clamping blocks 6 outward through the inclined surface of the clamping block 6, so that the multiple clamping blocks 6 can be pressed against the inner wall of the bearing ring, thereby achieving an automatic clamping effect on the bearing ring and preventing the shaft from being stuck during the polishing operation. The movement of the bearing ring affects the grinding effect; as the turntable 3 drives the L-shaped guide rod 9 to continue to move, the end of the L-shaped guide rod 9 moves to the retaining segment groove 112, thereby achieving a continuous clamping effect of the multiple clamping blocks 6 on the bearing ring; after the grinding is completed, the turntable 3 drives the L-shaped guide rod 9 to move to the release segment groove 113, so that the L-shaped guide rod 9 can drive the extrusion plate 8 to move upward, so that the multiple clamping blocks 6 retract into the positioning column 4 under the action of the spring rod 7, thereby releasing the clamping effect on the bearing ring, so that the operator can take the polished bearing ring.

[0021] In this embodiment, the grinding mechanism includes a vertical plate 14 fixedly mounted on the upper surface of the base plate 1, and two retaining frames 15 are symmetrically fixedly mounted on the outer surface of the vertical plate 14 close to the support tube 2, and two guide wheels 16 are rotatably mounted between the two retaining frames 15. A grinding belt 17 is sleeved on the outer surface between the two guide wheels 16, and a driving motor 19 is fixedly mounted on the outer surface of one of the retaining frames 15. The output end of the driving motor 19 passes through the outer surface of the retaining frame 15 and is fixedly mounted on the rotation center of one of the guide wheels 16. The outer surfaces of the adjacent sides of the two retaining frames 15 are both provided with arc-shaped closed-loop grooves 18, and both side edges of the grinding belt 17 are slidably mounted on the inner wall of the arc-shaped closed-loop groove 18, and both side edges of the grinding belt 17 are installed with limiting rings matching the arc-shaped closed-loop groove 18, and both side edges of the grinding belt 17 are clamped in the arc-shaped closed-loop groove 18 through the limiting rings.

[0022] When the bearing ring moves to the grinding belt 17, the outer periphery of the bearing ring will contact the surface of the grinding belt 17, and the guide wheel 16 is driven to rotate by the driving motor 19, so that the guide wheel 16 can drive the grinding belt 17 to move along the inner wall of the arc-shaped closed-loop groove 18 opened on the retaining frame 15, so that the grinding belt 17 can grind the outer periphery of the bearing ring.

[0023] In this embodiment, a rotating mechanism is installed between the positioning column 4 and the supporting tube 2, and the rotating mechanism includes a transmission gear 12 fixedly installed on the outer surface of the bottom end of the positioning column 4, and an internal gear ring 13 is fixedly installed on the inner wall of the supporting tube 2, and the transmission gear 12 is meshed with the internal gear ring 13.

[0024] When the turntable 3 drives the positioning column 4 to move, the transmission gear 12 installed on the outer periphery of the positioning column 4 will roll on the internal gear ring 13 installed on the inner wall of the support tube 2, so that the transmission gear 12 can drive the positioning column 4 to rotate, and the positioning column 4 can drive the bearing ring to rotate through the clamping block 6, so that the grinding belt 17 can evenly grind the outer periphery of the bearing ring.

[0025] In this embodiment, a limit strip 20 is fixedly installed on the outer surface of the L-shaped guide rod 9 in the vertical direction. The limit strip 20 passes through the outer surface of the U-shaped plate 10 and is slidably installed with it. The stability of the vertical movement of the L-shaped guide rod 9 can be ensured by the limit strip 20 and the U-shaped plate 10.

[0026] From the above description, it can be seen that the above-mentioned embodiment of the present invention achieves the following technical effects: when in use, the bearing ring to be polished is sleeved on the positioning column 4, and the turntable 3 is driven to rotate by the stepper motor 22, so that the turntable 3 can drive the positioning column 4 and the bearing ring to move as a whole. When the L-shaped guide rod 9 moves with the turntable 3 to the clamping section groove 111 of the guide groove 11, the L-shaped guide rod 9 will drive the extrusion plate 8 to move downward, so that the extrusion plate 8 pushes the multiple clamping blocks 6 outward through the inclined surface of the clamping block 6, so that the multiple clamping blocks 6 can be pressed against the inner wall of the bearing ring, so as to achieve the automatic clamping effect of the bearing ring, prevent the movement of the bearing ring during the polishing operation from affecting the polishing effect, and there is no need to clamp the bearing ring separately, which can effectively improve the surface treatment efficiency of the bearing ring; As the turntable 3 drives the L-shaped guide rod 9 to continue to move, the end of the L-shaped guide rod 9 moves into the retaining segment groove 112, thereby achieving a continuous clamping effect of the multiple clamping blocks 6 on the bearing ring; When the turntable 3 drives the positioning column 4 to move, the transmission gear 12 installed on the outer periphery of the positioning column 4 will roll on the inner gear ring 13 installed on the inner wall of the support tube 2, so that the transmission gear 12 can drive the positioning column 4 to rotate, so that the positioning column 4 can drive the bearing ring to rotate through the clamping block 6, so that the grinding belt 17 can evenly grind the outer periphery of the bearing ring; When the bearing ring moves to the grinding belt 17, the outer periphery of the bearing ring will contact the surface of the grinding belt 17, and the guide wheel 16 is driven to rotate by the driving motor 19, so that the guide wheel 16 can drive the grinding belt 17 to move along the inner wall of the arc-shaped closed-loop groove 18 provided on the retaining frame 15, so that the grinding belt 17 can grind the outer periphery of the bearing ring; After grinding is completed, the turntable 3 drives the L-shaped guide rod 9 to move to the loosening section groove 113, so that the L-shaped guide rod 9 can drive the extrusion plate 8 to move upward, so that the multiple clamping blocks 6 are retracted into the positioning column 4 under the action of the spring rod 7, thereby releasing the clamping effect on the bearing ring, so that the operator can take the grinding completed bearing ring.

[0027] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A surface treatment device for a white metal bearing of a ship stern tube, comprising a bottom plate (1), characterized in that: A support tube (2) is fixedly mounted on the upper surface of the base plate (1), a turntable (3) is rotatably mounted on the top of the support tube (2), a positioning column (4) is rotatably mounted on the upper surface of the turntable (3), the positioning column (4) is a hollow structure, a clamping mechanism is mounted inside the positioning column (4), the clamping mechanism comprises a plurality of rectangular openings uniformly penetrated in a circumferential direction and opened on the outer surface of the positioning column (4), a clamping block (6) is slidably mounted on the inner wall of each rectangular opening, a spring rod (7) is fixedly mounted between the outer surface of the clamping block (6) away from the positioning column (4) and the inner wall of the positioning column (4), and an inclined surface is provided on the end of the clamping block (6) away from the positioning column (4), a tightening mechanism is mounted between the positioning column (4) and the support tube (2), and a grinding mechanism is mounted on the upper surface of the base plate (1).

2. A surface treatment device for a ship stern tube white metal bearing according to claim 1, characterized in that: The expansion mechanism comprises a U-shaped plate (10) fixedly mounted on the lower surface of the turntable (3), an L-shaped guide rod (9) being inserted through the lower surface of the U-shaped plate (10), an extrusion disk (8) being fixedly mounted on the top end of the L-shaped guide rod (9), the outer periphery of the extrusion disk (8) being in contact with the inclined surface of the clamping block (6), a guide groove (11) being formed on the inner wall of the support tube (2), and an end of the L-shaped guide rod (9) away from the extrusion disk (8) being slidably mounted on the inner wall of the guide groove (11).

3. A surface treatment device for a ship stern tube white metal bearing according to claim 2, characterized in that: The guide groove (11) comprises a clamping segment groove (111), a retaining segment groove (112) and a loosening segment groove (113); the guide groove (11) is composed of the clamping segment groove (111), the retaining segment groove (112) and the loosening segment groove (113) connected end to end.

4. A surface treatment device for a ship stern tube white metal bearing according to claim 1, characterized in that: The grinding mechanism comprises a vertical plate (14) fixedly mounted on the upper surface of the bottom plate (1); two retaining frames (15) are symmetrically fixedly mounted on the outer surface of the vertical plate (14) on the side close to the support tube (2); two guide wheels (16) are rotatably mounted between the two retaining frames (15); a grinding belt (17) is sleeved on the outer surface between the two guide wheels (16); a driving motor (19) is fixedly mounted on the outer surface of one of the retaining frames (15); an output end of the driving motor (19) passes through the outer surface of the retaining frame (15) and is fixedly mounted to the rotation center of one of the guide wheels (16).

5. A surface treatment device for a ship stern tube white metal bearing according to claim 4, characterized in that: The outer surfaces of the adjacent sides of the two retaining frames (15) are each provided with an arc-shaped closed-loop groove (18), and both side edges of the grinding belt (17) are slidably mounted on the inner walls of the arc-shaped closed-loop groove (18).

6. A surface treatment device for a ship stern tube white metal bearing according to claim 1, characterized in that: A rotating mechanism is installed between the positioning column (4) and the support tube (2), the rotating mechanism comprising a transmission gear (12) fixedly installed on the outer surface of the bottom end of the positioning column (4), an inner toothed ring (13) fixedly installed on the inner wall of the support tube (2), and the transmission gear (12) meshes with the inner toothed ring (13).

7. A surface treatment device for a ship stern tube white metal bearing according to claim 1, characterized in that: A door frame (21) is fixedly mounted on the upper surface of the bottom plate (1), a stepper motor (22) is fixedly mounted on the top wall of the door frame (21), and an output end of the stepper motor (22) passes through the top of the door frame (21) and is fixedly mounted to the rotation center of the turntable (3).

8. The surface treatment device for a ship stern tube white metal bearing according to claim 2, characterized in that: A limit strip (20) is fixedly mounted on the outer surface of the L-shaped guide rod (9) in the vertical direction, and the limit strip (20) penetrates the outer surface of the U-shaped plate (10) and is slidably mounted thereon.

9. A surface treatment device for a ship stern tube white metal bearing according to claim 1, characterized in that: A support ring (5) is fixedly mounted on the outer periphery of the positioning column (4), and the support ring (5) is arranged above the turntable (3).

Images