Axial limiting structure for thrust pad of vertical thrust bearing

Abstract

The utility model discloses a vertical thrust bearing thrust pad axial limiting structure which comprises a supporting piece and a thrust head, the thrust head is located right above the supporting piece, the supporting piece is an annular piece, a plurality of positioning concave holes are formed in the top face of the supporting piece, the thrust pad is located right above the corresponding positioning concave holes, and the thrust head is located above the supporting piece. The top surface of the thrust pad clings to or is close to the bottom surface of the edge part of the thrust head; a bottom supporting block is inserted in the lower portion of the positioning concave hole in a sleeved mode, a guide sleeve is installed on the top face of the bottom supporting block, the top face of the guide sleeve abuts against the bottom face of the thrust pad in a pressing mode, and the bottom supporting block is fixed to the thrust pad through a fixing bolt. When the thrust block is lifted, the thrust pad can be limited, the thrust pad is prevented from being lifted along with the thrust block, and normal use of the thrust pad is guaranteed.

Description

Technical field:

[0001] The utility model relates to the technical field related to a bearing seat, and more specifically to an axial limiting structure of a thrust bush of a vertical thrust bearing. Background technology:

[0002] Vertical thrust sliding bearings are widely used in water pump motors. They are used to bear the weight of the unit rotor and the water thrust during operation.

[0003] Some water pumps are shut down for a long time. At this time, the oil between the thrust bearing and the thrust head has dried up. After oil injection, the oil cannot penetrate. The thrust head must be lifted to allow the oil to enter between the thrust bearing and the thrust head before the machine can be started. Due to the drying of the lubricating oil, part of the thrust bearing will be adsorbed on the thrust head when the thrust head is lifted up, which may damage the thrust bearing when the machine is started, affecting its use. Utility model content:

[0004] The utility model aims to overcome the deficiencies of the prior art and provide an axial limiting structure for a thrust shoe of a vertical thrust bearing, which can limit the thrust shoe when the thrust head is lifted to prevent it from being lifted up with the thrust head, thereby ensuring the normal use of the thrust shoe.

[0005] The solution of the utility model to solve the technical problem is:

[0006] A vertical thrust bearing thrust pad axial limiting structure comprises a support member and a thrust head, wherein the thrust head is located directly above the support member, the support member is an annular member, and a plurality of positioning recessed holes are formed on the top surface thereof, the thrust pad is located directly above the corresponding positioning recessed holes, and the top surface of the thrust pad is closely attached to or close to the bottom surface of the edge of the thrust head;

[0007] The lower sleeve of the positioning concave hole is provided with a bottom support block, the top surface of the bottom support block is provided with a guide sleeve, the top surface of the guide sleeve is pressed against the bottom surface of the thrust washer, and the bottom support block is fixed to the thrust washer by fixing bolts;

[0008] A transverse through hole is formed on the upper outer wall of the support member around the positioning recessed hole, and the inner end of the transverse through hole is communicated with the corresponding positioning recessed hole. The screw portion of the side limiting bolt is screwed onto the internal thread formed on the inner wall at the inner end of the transverse through hole, and the inner end of the screw portion of the side limiting bolt extends into the corresponding positioning recessed hole and is inserted into the side through hole formed on the side wall of the corresponding guide sleeve.

[0009] A circular protrusion extending downward is formed in the middle of the bottom surface of the thrust washer, and the circular protrusion is inserted into the guide sleeve.

[0010] A lower circular protrusion is formed in the middle of the top surface of the bottom support block, and the lower circular protrusion is inserted into the lower inner wall of the guide sleeve; the lower part of the guide sleeve is inserted into the corresponding positioning concave hole, and the lower outer wall of the guide sleeve is tightly attached to the inner wall of the corresponding positioning concave hole;

[0011] A vertical through hole is formed in the middle of the bottom support block, and the screw portion of the fixing bolt is inserted into the vertical through hole. The rotating portion of the fixing bolt is at the bottom, and its top surface is pressed against the bottom surface of the bottom support block. The top of the screw portion of the fixing bolt extends out of the vertical through hole and is screwed into the screw hole formed in the middle of the bottom surface of the circular protrusion.

[0012] The bottom surface of the guide sleeve is pressed against the top surface of the edge of the bottom support block.

[0013] The outstanding effects of the utility model are:

[0014] It can limit the thrust washer when the thrust head is lifted to prevent it from being lifted up with the thrust head, thereby ensuring the normal use of the thrust washer. Description of the drawings:

[0015] Figure 1 It is a partial structural schematic diagram of the utility model;

[0016] Figure 2 yes Figure 1 A partial enlarged view of . Specific implementation method:

[0017] For example, see Figure 1 to Figure 2 As shown, a vertical thrust bearing thrust pad axial limiting structure includes a support member 10 and a thrust head 20, wherein the thrust head 20 is located directly above the support member 10, wherein the support member 10 is an annular member, and a plurality of positioning recessed holes 11 are formed on its top surface, and all the positioning recessed holes 11 are evenly distributed on the top surface of the support member 10 with the central axis of the support member 10 as the center, and the thrust pad 30 is located directly above the corresponding positioning recessed holes 11, and the top surface of the thrust pad 30 is in close contact with or close to the bottom surface of the edge of the thrust head 20;

[0018] The bottom of the positioning recessed hole 11 is sleeved with a bottom support block 40, the top surface of the bottom support block 40 is installed with a guide sleeve 50, the top surface of the guide sleeve 50 is pressed against the bottom surface of the thrust washer 30, and the bottom support block 40 is fixed to the thrust washer 30 by a fixing bolt 1;

[0019] The bottom surface of one side of the thrust washer 30 is formed with a side positioning groove extending upward, the lower part of the positioning pin is clamped in the lower clamping hole formed on the top surface of the support member 10 directly below the side positioning groove, and the upper part of the positioning pin is inserted into the corresponding side positioning groove, and the positioning of the thrust washer 30 is achieved by the positioning pin.

[0020] Furthermore, a transverse through hole 12 is formed on the upper outer wall of the support member 10 around the positioning recessed hole 11, and the inner end of the transverse through hole 12 is communicated with the corresponding positioning recessed hole 11. The screw portion of the side limiting bolt 3 is screwed onto the internal thread formed on the inner wall at the inner end of the transverse through hole 12, and the inner end of the screw portion of the side limiting bolt 3 extends into the corresponding positioning recessed hole 11 and is inserted into the side through hole 51 formed on the side wall of the corresponding guide sleeve 50.

[0021] The specific connection structure between the thrust washer 30, the guide sleeve 50 and the bottom support block 40 is as follows: a circular protrusion 31 extending downward is formed in the middle of the bottom surface of the thrust washer 30, and the circular protrusion 31 is inserted into the guide sleeve 50, and the outer wall of the circular protrusion 31 is in close contact with the upper inner wall of the guide sleeve 50.

[0022] A lower circular protrusion 41 is formed in the middle of the top surface of the bottom support block 40. The lower circular protrusion 41 is inserted into the lower inner wall of the guide sleeve 50, and the outer wall of the lower circular protrusion 41 is in close contact with the lower inner wall of the guide sleeve 50; the lower part of the guide sleeve 50 is inserted into the corresponding positioning recessed hole 11, and the lower outer wall of the guide sleeve 50 is in close contact with the inner wall of the corresponding positioning recessed hole 11;

[0023] A vertical through hole is formed in the middle of the bottom support block 40, and the screw portion of the fixing bolt 1 is inserted into the vertical through hole. The rotating portion of the fixing bolt 1 is at the bottom, and its top surface is pressed against the bottom surface of the bottom support block 40. The top of the screw portion of the fixing bolt 1 extends out of the vertical through hole and is screwed into the screw hole formed in the middle of the bottom surface of the circular protrusion 31.

[0024] The bottom surface of the guide sleeve 50 is pressed against the top surface of the edge of the bottom support block 40 .

[0025] Furthermore, an annular groove is formed on the outer wall of the bottom support block 40, and the sealing ring 2 is nested in the annular groove, and the outer wall of the sealing ring 2 is pressed against the inner wall of the corresponding positioning recessed hole 11. The transverse through hole 12 is a stepped through hole, and its outer end is a large diameter hole section, and the inner end is a small diameter hole section. The inner wall of the small diameter hole section is formed with an internal thread, and a notch 13 is formed on the upper part of the outer wall of the support member 10 at the outer end of the transverse through hole 12. A washer 4 is inserted at the outer end of the screw portion of the side limit bolt 3, and the washer 4 is clamped between the inner end surface of the rotating portion of the side limit bolt 3 and the inner end surface of the notch 13. The upper part of the guide sleeve 50 is inserted with a butterfly spring 5, and the bottom end of the butterfly spring 5 is applied to the top surface of the support member 10, and the top end of the butterfly spring 5 is applied to the bottom surface of the thrust washer 30.

[0026] When this embodiment is in use, when its thrust head 20 is lifted upward, the guide sleeve 50 is limited to be lifted by the side limit bolt 3, and the guide sleeve 50 limits the lifting of the thrust washer 30, thereby ensuring that the thrust washer 30 will not be lifted as the thrust head 20 is lifted, thereby ensuring the normal use of the thrust washer 30.

[0027] The above description is only a preferred embodiment of the utility model. It is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments, or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A vertical thrust bearing thrust shoe axial limit structure, comprising a support member (10) and a thrust head (20), wherein the thrust head (20) is located directly above the support member (10), and is characterized in that: The support member (10) is an annular member, and a plurality of positioning recessed holes (11) are formed on its top surface. The thrust washer (30) is located directly above the corresponding positioning recessed holes (11), and the top surface of the thrust washer (30) is in close contact with or close to the bottom surface of the edge of the thrust head (20); The lower part of the positioning recessed hole (11) is provided with a bottom support block (40), the top surface of the bottom support block (40) is provided with a guide sleeve (50), the top surface of the guide sleeve (50) is pressed against the bottom surface of the thrust washer (30), and the bottom support block (40) is fixed to the thrust washer (30) by means of a fixing bolt (1); A transverse through hole (12) is formed on the upper outer wall of the support member (10) around the positioning recessed hole (11), the inner end of the transverse through hole (12) is communicated with the corresponding positioning recessed hole (11), the screw portion of the side limiting bolt (3) is screwed onto the internal thread formed on the inner wall at the inner end of the transverse through hole (12), the inner end of the screw portion of the side limiting bolt (3) extends into the corresponding positioning recessed hole (11) and is inserted into the side through hole (51) formed on the side wall of the corresponding guide sleeve (50).

2. The axial limiting structure of the thrust pad of a vertical thrust bearing according to claim 1 is characterized in that: A circular protrusion (31) extending downward is formed in the middle of the bottom surface of the thrust washer (30), and the circular protrusion (31) is inserted into the guide sleeve (50).

3. The axial limiting structure of the thrust pad of a vertical thrust bearing according to claim 2 is characterized in that: The outer side wall of the circular protrusion (31) is in close contact with the upper inner side wall of the guide sleeve (50).

4. The axial limiting structure of the thrust pad of a vertical thrust bearing according to claim 1 is characterized in that: A lower circular protrusion (41) is formed in the middle of the top surface of the bottom support block (40), and the lower circular protrusion (41) is inserted into the lower inner wall of the guide sleeve (50), and the outer wall of the lower circular protrusion (41) is in close contact with the lower inner wall of the guide sleeve (50); the lower part of the guide sleeve (50) is inserted into the corresponding positioning recessed hole (11), and the lower outer wall of the guide sleeve (50) is in close contact with the inner wall of the corresponding positioning recessed hole (11); An annular groove is formed on the outer wall of the bottom support block (40), the sealing ring (2) is nested in the annular groove, and the outer wall of the sealing ring (2) is pressed against the inner wall of the corresponding positioning recessed hole (11).

5. The axial limiting structure of the thrust pad of a vertical thrust bearing according to claim 2 is characterized in that: A vertical through hole is formed in the middle of the bottom support block (40), and the screw portion of the fixing bolt (1) is inserted into the vertical through hole. The rotating portion of the fixing bolt (1) is at the bottom, and its top surface is pressed against the bottom surface of the bottom support block (40). The top of the screw portion of the fixing bolt (1) extends out of the vertical through hole and is screwed into the screw hole formed in the middle of the bottom surface of the circular protrusion (31); The bottom surface of the guide sleeve (50) is pressed against the top surface of the edge of the bottom support block (40).

6. The axial limiting structure of the thrust pad of a vertical thrust bearing according to claim 1 is characterized in that: The transverse through hole (12) is a stepped through hole, the outer end of which is a large diameter hole section and the inner end is a small diameter hole section, the inner side wall of the small diameter hole section is formed with an internal thread, the upper part of the outer side wall of the support member (10) at the outer end of the transverse through hole (12) is formed with a notch (13), the outer end of the screw portion of the side limit bolt (3) is inserted with a washer (4), and the washer (4) is clamped between the inner end surface of the rotating portion of the side limit bolt (3) and the inner end surface of the notch (13).

7. The axial limiting structure of the thrust pad of a vertical thrust bearing according to claim 1 is characterized in that: The upper part of the guide sleeve (50) is sleeved with a butterfly spring (5), the bottom end of the butterfly spring (5) is pressed against the top surface of the support member (10), and the top end of the butterfly spring (5) is pressed against the bottom surface of the thrust washer (30).

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