CN115853917A - Tapered roller bearing clearance adjusting method for diaphragm compressor - Google Patents
Tapered roller bearing clearance adjusting method for diaphragm compressor Download PDFInfo
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Abstract
The invention relates to thickness measurement, in particular to a tapered roller bearing clearance adjusting method for a diaphragm compressor, which comprises the steps of (1) installing a pressure sensor (2), installing a pressure sensor (3), installing a dial indicator (4), pre-tightening (5), fixing (6), recording a dial indicator value (7) to determine the thickness of a gasket, or (1) installing the pressure sensor (2), installing the pressure sensor (3), pre-tightening (4), fixing (5), measuring by using a clearance gauge, recording (6) to determine the thickness of the gasket, and the like. The structure is extremely simple and almost has no cost.
Description
Technical Field
The invention relates to thickness measurement, in particular to a tapered roller bearing clearance adjusting method for a diaphragm compressor.
Background
The diaphragm compressor is a positive displacement compressor with a special structure, and is characterized in that a piston pushes working oil in an oil cavity of an oil cylinder, the oil uniformly pushes a diaphragm to reciprocate in a diaphragm cavity formed between a cylinder cover and a curved surface of an oil distribution disc after passing through the oil distribution disc, the volume of an air cavity of a cylinder is changed, and the purpose of compressing and conveying gas is achieved under the condition that an air suction valve and an air discharge valve work in a matched mode.
In the diaphragm compressor, both ends of a crankshaft are connected with a crankcase through tapered roller bearings. The setting correctness of the clearance of the tapered roller bearing directly determines the service life of the bearing. Chinese patent publication No. CN103170830A discloses a novel tapered roller bearing clearance adjustment apparatus and an adjustment method thereof, which includes a pressure adjustment system, a measurement system, and a calibration dial; a pneumatic hydraulic pump in the pressure adjusting system is connected with a manual reversing valve through an oil line pipeline, the manual reversing valve is respectively connected with a pressure reducing valve A and a pressure reducing valve B through the oil line pipeline, the pressure reducing valve A and the pressure reducing valve B are respectively connected with a shuttle valve through the oil line pipeline, and a pressure gauge is arranged on the shuttle valve; an oil cylinder in the measuring system is connected with the shuttle valve through an oil pipeline and acts on the gland, and the dial indicator is installed in a reserved hole of the bearing end cover. After the device to be adjusted is adjusted through a high-pressure oil way in the pressure adjusting system, the numerical value of the dial indicator is read through a low-pressure oil way, and the final required bearing clearance value can be ensured through adjusting the thickness of the gasket by calculating the average value of the numerical values measured by the two dial indicators; however, this method requires additional valve set and air compressor, and the cost is high.
Disclosure of Invention
In order to overcome the defects of the prior art, one of the technical schemes adopted by the invention is as follows:
a tapered roller bearing clearance adjusting method for a diaphragm compressor comprises the following steps:
(1) installing a pressing plate: a pressing plate is sleeved on the crankshaft outside the crankcase, a pressing plate through hole corresponding to a bearing cover hole formed in the bearing cover is formed in the pressing plate, and a plurality of adjusting bolts penetrate through the pressing plate through hole and the bearing cover hole and then are in threaded connection with the crankcase;
(2) installing a pressure sensor: one end of each of the 2 pressure sensors is abutted against the outer surface of the bearing cover, the other end of each of the 2 pressure sensors is abutted against the inner surface of the pressing plate, and the 2 pressure sensors are centrosymmetric about the rotating axis of the crankshaft;
(3) installing a dial indicator: 2 clearance adjusting holes are formed in the bearing cover and avoid bearing cover holes formed in the bearing cover, a dial gauge seat is screwed in the 2 clearance adjusting holes respectively, and a measuring head of the dial gauge abuts against the abutting surface of the crankcase and the bearing cover; the axis connecting line of the 2 dial indicators is orthogonal to the axis connecting line of the 2 pressure sensors; adjusting 2 dial indicators to align the pointers with the zero scale of the dial plate;
(4) pre-tightening: the nuts on the plurality of adjusting bolts are rotated forward and/or reversely to drive the pressure plate to pre-compress the 2 pressure sensors, so that the two pressure sensors are externally connected with a digital display instrument to respectively display X1 Newton force and X2 Newton force;
(5) tightening: the crankshaft is slowly rotated while the nuts are adjusted to ensure that the two pressure sensors are respectively and stably connected with the digital display instrument to display X1 +/-0.05X Newton force and X2 +/-0.05X Newton force;
(6) recording a dial indicator value: observing and recording the numerical values Y1 and Y2 of the two dial indicators;
(7) determining the thickness of the gasket: if the clearance of the tapered roller bearing is Z, the thickness of the gasket is (Y1 + Y2)/2 + Z.
Further, the ratio of the absolute value of the difference between the numerical display values of the two external digital display instruments of the pressure sensors to the numerical display value of any external digital display instrument of the pressure sensor is less than 5%.
The second technical scheme adopted by the invention is as follows:
a tapered roller bearing clearance adjusting method for a diaphragm compressor comprises the following steps:
(1) installing a pressing plate: a pressing plate is sleeved on the crankshaft outside the crankcase, a pressing plate through hole corresponding to a bearing cover hole formed in the bearing cover is formed in the pressing plate, and a plurality of adjusting bolts penetrate through the pressing plate through hole and the bearing cover hole and then are in threaded connection with the crankcase;
(2) installing a pressure sensor: avoiding the adjusting bolt, arranging 4 pressure sensors between the bearing cover and the pressure plate, wherein one end of each pressure sensor is abutted against the outer surface of the bearing cover, and the other end of each pressure sensor is abutted against the inner surface of the pressure plate; the 4 pressure sensors are uniformly distributed in the circumferential direction of the bearing cover;
(3) pre-tightening: the nuts on the plurality of adjusting bolts are rotated forwards and/or reversely to drive the pressure plate to pre-press the 4 pressure sensors, so that the external digital display instrument of the 4 pressure sensors respectively displays X1 Newton force, X2 Newton force, X3 Newton force and X4 Newton force;
(4) tightening: the crankshaft is slowly rotated, and the nuts are adjusted to ensure that the external digital display instrument of the 4 pressure sensors stably displays X1 +/-0.05X power, X2 +/-0.05X power, X3 +/-0.05X power and X4 +/-0.05X power;
(5) measuring and recording with feeler gauge: measuring gaps between the crankcase and the bearing cover by using a feeler gauge and uniformly distributing 6 points along the circumferential direction of the bearing cover, and recording the gap values as M1, M2, M3, M4, M5 and M6 respectively;
(6) determining the thickness of the gasket: if the clearance of the tapered roller bearing is Z, the thickness of the shim is (M1 + M2+ M3+ M4+ M5+ M6)/6 + Z.
Further, the ratio of the absolute value of the difference between the digital display values of any two external digital display instruments in the 4 pressure sensors to the digital display value of any one external digital display instrument in the two external digital display instruments is less than 5%.
Compared with the prior art, the method is simple, the clearance adjustment can be conveniently carried out only through the dial indicator or the feeler gauge, the assembly workers are not required to have higher assembly technology and proficiency, and the efficiency is high. The structure is extremely simple and almost has no cost.
Drawings
Fig. 1 is a schematic structural view of the present invention.
Fig. 2 is a partial sectional view of fig. 1.
Fig. 3 is a partially enlarged view of fig. 2.
Fig. 4 is another schematic structural diagram of the present invention.
Reference numbers in the figures: 100. a crankcase; 101. an abutting surface; 200. a crankshaft; 300. a bearing cap; 301. a bearing cap bore; 302. a clearance adjustment hole; 400. a dial indicator; 401. a gauge stand; 402. a measuring head; 500. pressing a plate; 600. adjusting the bolt; 700. a pressure sensor; 800. a clearance gauge.
Detailed Description
The invention will be further explained with reference to the drawings.
Embodiment 1, as shown in fig. 1 to 3, a method for adjusting a play of a tapered roller bearing for a diaphragm compressor includes the steps of:
(1) mounting the pressing plate 500: a pressing plate 500 is sleeved on the crankshaft 200 outside the crankcase 100, 8 pressing plate through holes corresponding to 8 bearing cover holes 301 formed in the bearing cover 300 are formed in the pressing plate 500, and 8 adjusting bolts 600 penetrate through the pressing plate through holes and the bearing cover holes 301 and then are screwed with the crankcase 100;
(2) mounting the pressure sensor 700: one end of the 2 pressure sensors 700 abuts against the outer surface of the bearing cap 300 and the other end abuts against the inner surface of the pressure plate 500, and the 2 pressure sensors 700 are centrosymmetric with respect to the rotation axis of the crankshaft 200; the axis connecting line of the 2 pressure sensors 700 is parallel to the ground;
(3) installing a dial indicator 400: 2 clearance adjusting holes 302 are formed in the bearing cover 300 and avoiding a bearing cover hole 301 formed in the bearing cover, a gauge seat 401 of the dial gauge 400 is screwed in the 2 clearance adjusting holes 302, and a measuring head 402 of the dial gauge 400 abuts against the abutting surface 101 of the crankcase 100 and the bearing cover 300; the axis connecting line of the 2 dial indicators 400 is orthogonal to the axis connecting line of the 2 pressure sensors 700; namely, the axis connecting line of the 2 dial indicators 400 is vertical to the ground, and the 2 dial indicators 400 are adjusted to align with the zero scale of the dial plate;
(4) pre-tightening: the nuts on the 8 adjusting bolts 600 are positively and/or negatively rotated to drive the pressing plate 500 to pre-press the 2 pressure sensors 700, so that the two pressure sensors 700 are externally connected with a digital display instrument to respectively display X1 Newton force and X2 Newton force;
(5) tightening: the crankshaft 200 is slowly rotated while the nuts are adjusted to ensure that the two pressure sensors 700 are respectively and stably displayed with X1 +/-0.05X Newton force and X2 +/-0.05X Newton force by the external digital display instrument;
(6) record the value of the dial indicator 400: observing and recording the values Y1 and Y2 of the two dial indicators 400;
(7) determining the thickness of the gasket: if the clearance of the tapered roller bearing is Z, the thickness of the gasket is (Y1 + Y2)/2 + Z.
In another preferred embodiment, in step (4), it is ensured that the ratio of the absolute value of the difference between the digital display values of the two external digital display meters of the pressure sensor 700 and the digital display value of any external digital display meter of the pressure sensor 700 is less than 5% during the pretensioning process. Namely (| X1-X2 |)/X1 is less than 0.05; (| X1-X2 |)/X2 is less than 0.05. Therefore, the tapered roller bearing can ensure that the clearance of the tapered roller bearing is consistent at the upper end and the lower end.
Embodiment 2, as shown in fig. 4, a method for adjusting a clearance of a tapered roller bearing for a diaphragm compressor includes the steps of:
(1) mounting the pressing plate 500: a press plate 500 is sleeved on the crankshaft 200 outside the crankcase 100, 8 press plate through holes corresponding to 8 bearing cover holes 301 formed in the bearing cover 300 are formed in the press plate 500, and 8 adjusting bolts 600 penetrate through the press plate through holes and the bearing cover holes 301 and then are screwed with the crankcase 100;
(2) mounting the pressure sensor 700: 4 pressure sensors 700 are provided between the bearing cap 300 and the pressure plate 500 avoiding the adjusting bolts 600, one end of each pressure sensor 700 abuts against the outer surface of the bearing cap 300, and the other end abuts against the inner surface of the pressure plate 500; the 4 pressure sensors 700 are uniformly distributed around the circumference of the bearing cover 300;
(3) pre-tightening: the nuts on the 8 adjusting bolts 600 are positively and/or negatively rotated to drive the pressing plate 500 to pre-press the 4 pressure sensors 700, so that the external digital display instrument of the 4 pressure sensors 700 respectively displays X1 Newton force, X2 Newton force, X3 Newton force and X4 Newton force;
(4) tightening: the crankshaft 200 is slowly rotated, and the nuts are adjusted to ensure that the external digital display instrument of the 4 pressure sensors 700 stably displays X1 +/-0.05X power, X2 +/-0.05X power, X3 +/-0.05X power and X4 +/-0.05X power;
(5) the measurements are taken and recorded with feeler gauge 800: measuring gaps between the crankcase 100 and the bearing cover 300 by using a feeler gauge 800 and uniformly distributing 6 points in the circumferential direction of the bearing cover 300, and recording the gap values as M1, M2, M3, M4, M5 and M6 respectively;
(6) determining the thickness of the gasket: if the clearance of the tapered roller bearing is Z, the thickness of the gasket is as follows:
（M1+M2+M3+M4+M5+M6）/6+Z。
in another preferred embodiment, in the pre-tightening step in step (3), the ratio of the absolute value of the difference between the digital display values of any two external digital display instruments in the 4 pressure sensors 700 to the digital display value of any one external digital display instrument in the two external digital display instruments 700 is less than 5%. Namely (| X1-X2 |)/X1 is less than 0.05; (| X1-X2 |)/X2 is less than 0.05; (| X1-X3 |)/X1 is less than 0.05; (| X1-X3 |)/X3 < 0.05; (| X1-X4 |)/X1 < 0.05; (| X1-X4 |)/X4 is less than 0.05; (| X2-X3 |)/X2 is less than 0.05; (| X2-X3 |)/X3 is less than 0.05; (| X2-X4 |)/X2 is less than 0.05; (| X2-X4 |)/X4 is less than 0.05.
Nothing in this specification is intended to be exhaustive or to be construed as prior art or common general knowledge in the field.
Claims (4)
1. A tapered roller bearing clearance adjusting method for a diaphragm compressor is characterized by comprising the following steps:
(1) mounting platen (500): a pressing plate (500) is sleeved on a crankshaft (200) outside the crankcase (100), a pressing plate through hole corresponding to a bearing cover hole (301) formed in a bearing cover (300) is formed in the pressing plate (500), and a plurality of adjusting bolts (600) are screwed with the crankcase (100) after penetrating through the pressing plate through hole and the bearing cover hole (301);
(2) mounting a pressure sensor (700): one end of each of the 2 pressure sensors (700) is abutted against the outer surface of the bearing cover (300), the other end of each of the 2 pressure sensors is abutted against the inner surface of the pressure plate (500), and the 2 pressure sensors (700) are centrosymmetric with respect to the rotation axis of the crankshaft (200);
(3) installing a dial indicator (400): 2 clearance adjusting holes (302) are formed in the bearing cover (300) and avoid bearing cover holes (301) formed in the bearing cover, a gauge seat (401) of the dial indicator (400) is screwed in the 2 clearance adjusting holes (302), and a measuring head (402) of the dial indicator (400) abuts against an abutting surface (101) of the crankcase (100) and the bearing cover (300); the axis connecting line of the 2 dial indicators (400) is orthogonal to the axis connecting line of the 2 pressure sensors (700); adjusting 2 dial indicators (400) to align with the zero scale of the dial plate;
(4) pre-tightening: the nuts on the plurality of adjusting bolts (600) are positively and/or reversely rotated to drive the pressing plate (500) to pre-press the 2 pressure sensors (700), so that the two pressure sensors (700) are externally connected with a digital display instrument to respectively display X1 Newton force and X2 Newton force;
(5) tightening: the crankshaft (200) is slowly rotated, and the nuts are adjusted to ensure that the two pressure sensors (700) are respectively and stably displayed with X1 +/-0.05X power and X2 +/-0.05X power by the external digital display instrument;
(6) recording the value of a dial indicator (400): observing and recording the values Y1 and Y2 of the two dial indicators (400);
(7) determining the thickness of the gasket: if the clearance of the tapered roller bearing is Z, the thickness of the gasket is (Y1 + Y2)/2 + Z.
2. The clearance adjustment method of a tapered roller bearing for a diaphragm compressor according to claim 1, characterized in that (| X1-X2 |)/X1 < 0.05; (| X1-X2 |)/X2 < 0.05.
3. A tapered roller bearing clearance adjusting method for a diaphragm compressor is characterized by comprising the following steps:
(1) mounting the pressure plate (500): a pressing plate (500) is sleeved on a crankshaft (200) outside the crankcase (100), a pressing plate through hole corresponding to a bearing cover hole (301) formed in a bearing cover (300) is formed in the pressing plate (500), and a plurality of adjusting bolts (600) are screwed with the crankcase (100) after penetrating through the pressing plate through hole and the bearing cover hole (301);
(2) mounting a pressure sensor (700): avoiding the adjusting bolt (600), arranging 4 pressure sensors (700) between the bearing cover (300) and the pressure plate (500), wherein one end of each pressure sensor (700) is abutted against the outer surface of the bearing cover (300), and the other end of each pressure sensor is abutted against the inner surface of the pressure plate (500); the 4 pressure sensors (700) are uniformly distributed in the circumferential direction of the bearing cover (300);
(3) pre-tightening: the nuts on the plurality of adjusting bolts (600) are rotated forwards and/or backwards to drive the pressing plate (500) to pre-press the 4 pressure sensors (700), so that the external digital display instrument of the 4 pressure sensors (700) respectively displays X1 Newton force, X2 Newton force, X3 Newton force and X4 Newton force;
(4) tightening: the crankshaft (200) is slowly rotated, and the nuts are adjusted to ensure that the external digital display instrument of the 4 pressure sensors (700) stably displays X1 +/-0.05X Newton force, X2 +/-0.05X Newton force, X3 +/-0.05X Newton force and X4 +/-0.05X Newton force;
(5) measured and recorded with feeler gauge (800): measuring the clearance between the crankcase (100) and the bearing cover (300) by using a feeler gauge (800) and uniformly distributing 6 points along the circumferential direction of the bearing cover (300), and recording clearance values as M1, M2, M3, M4, M5 and M6 respectively;
(6) determining the thickness of the gasket: if the clearance of the tapered roller bearing is Z, the thickness of the shim is (M1 + M2+ M3+ M4+ M5+ M6)/6 + Z.
4. The clearance adjustment method of a tapered roller bearing for a diaphragm compressor according to claim 3, characterized in that: (| X1-X2 |)/X1 is less than 0.05; (| X1-X2 |)/X2 is less than 0.05; (| X1-X3 |)/X1 is less than 0.05; (| X1-X3 |)/X3 is less than 0.05; (| X1-X4 |)/X1 is less than 0.05; (| X1-X4 |)/X4 is less than 0.05; (| X2-X3 |)/X2 is less than 0.05; (| X2-X3 |)/X3 is less than 0.05; (| X2-X4 |)/X2 is less than 0.05; (| X2-X4 |)/X4 is less than 0.05.
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| CN202310193094.8A CN115853917B (en) | 2023-03-03 | 2023-03-03 | Conical roller bearing play adjusting method for diaphragm compressor |
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| CN202310193094.8A CN115853917B (en) | 2023-03-03 | 2023-03-03 | Conical roller bearing play adjusting method for diaphragm compressor |
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