CN113503308A - Pin shaft sleeve assembly of mechanical equipment and pin shaft wear-resisting test method - Google Patents
Pin shaft sleeve assembly of mechanical equipment and pin shaft wear-resisting test method Download PDFInfo
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- CN113503308A CN113503308A CN202111067989.4A CN202111067989A CN113503308A CN 113503308 A CN113503308 A CN 113503308A CN 202111067989 A CN202111067989 A CN 202111067989A CN 113503308 A CN113503308 A CN 113503308A
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- Prior art keywords
- pin shaft
- shaft sleeve
- alloy
- pin
- wear
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C11/00—Pivots; Pivotal connections
- F16C11/04—Pivotal connections
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C24/00—Coating starting from inorganic powder
- C23C24/08—Coating starting from inorganic powder by application of heat or pressure and heat
- C23C24/10—Coating starting from inorganic powder by application of heat or pressure and heat with intermediate formation of a liquid phase in the layer
- C23C24/103—Coating with metallic material, i.e. metals or metal alloys, optionally comprising hard particles, e.g. oxides, carbides or nitrides
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/30—Parts of ball or roller bearings
- F16C33/66—Special parts or details in view of lubrication
- F16C33/6637—Special parts or details in view of lubrication with liquid lubricant
- F16C33/664—Retaining the liquid in or near the bearing
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/30—Parts of ball or roller bearings
- F16C33/66—Special parts or details in view of lubrication
- F16C33/6637—Special parts or details in view of lubrication with liquid lubricant
- F16C33/6659—Details of supply of the liquid to the bearing, e.g. passages or nozzles
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C35/00—Rigid support of bearing units; Housings, e.g. caps, covers
- F16C35/04—Rigid support of bearing units; Housings, e.g. caps, covers in the case of ball or roller bearings
- F16C35/06—Mounting or dismounting of ball or roller bearings; Fixing them onto shaft or in housing
- F16C35/063—Fixing them on the shaft
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16N—LUBRICATING
- F16N9/00—Arrangements for supplying oil or unspecified lubricant from a moving reservoir or the equivalent
- F16N9/02—Arrangements for supplying oil or unspecified lubricant from a moving reservoir or the equivalent with reservoir on or in a rotary member
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/56—Investigating resistance to wear or abrasion
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C2202/00—Solid materials defined by their properties
- F16C2202/02—Mechanical properties
Abstract
The invention discloses a pin shaft sleeve assembly of mechanical equipment, belonging to the technical field of mechanical pin shafts, and comprising a pin shaft body and a shaft sleeve body; the hinge pin body comprises an installation part, an alloy wear-resistant layer is arranged on the surface of the installation part, the alloy wear-resistant layer is of a frosted structure formed by cladding alloy materials on the surface of the installation part, the shaft sleeve body comprises a stabilizing disc, a bearing and a stabilizing sheet, the shaft sleeve body and the hinge pin body are in interference fit, the stability between the hinge pin and the shaft sleeve is improved, in addition, a blocking disc is further assembled on the side wall of the shaft sleeve, the stability between the shaft sleeve and the hinge pin is further enhanced by the blocking disc, the blocking disc comprises a clamping piece, an assembly groove is further formed in the stabilizing disc, the clamping piece and the assembly groove are matched for use, the stable assembly between the shaft sleeve and the hinge pin is realized, and the condition that relative motion occurs between the shaft sleeve and the hinge pin is avoided.
Description
Technical Field
The invention belongs to the technical field of mechanical pin shafts, and particularly relates to a pin shaft sleeve assembly of mechanical equipment and a pin shaft wear-resisting test method.
Background
The pin shaft and the shaft sleeve are joints which are movable mechanically, in mechanical equipment, the pin shaft and the shaft sleeve are matched to drive parts of the mechanical equipment to work, and in the prior art, the pin shaft and the shaft sleeve have the properties of high core strength, high surface hardness and high impact resistance.
In prior art, the axle sleeve assembly is at the round pin epaxial to the round pin axle drives the axle sleeve at the pivoted in-process and rotates, and the axle sleeve with the round pin axle between adopt interference fit's mode to connect, consequently the round pin axle just can drive the axle sleeve at the pivoted in-process and rotate, however, the connected mode of round pin axle and axle sleeve still has following defect among the prior art:
because interference fit between axle sleeve and the round pin axle, although interference fit's mode can realize that the round pin axle drives the axle sleeve and rotates at the pivoted in-process, nevertheless, after round pin axle and axle sleeve used for a long time, the stress between the interference fit reduces, and the round pin axle is difficult to ensure the axle sleeve and follows the round pin axle and rotate together when the pivoted, leads to taking place relative rotation between axle sleeve and the round pin axle to the problem that has leaded to assembling stability between axle sleeve and the round pin axle to reduce takes place.
Disclosure of Invention
This section is for the purpose of summarizing some aspects of embodiments of the invention and to briefly introduce some preferred embodiments. In this section, as well as in the abstract and the title of the invention of this application, simplifications or omissions may be made to avoid obscuring the purpose of the section, the abstract and the title, and such simplifications or omissions are not intended to limit the scope of the invention.
The invention provides the structure and the method for assembling the pin shaft and the shaft sleeve.
Accordingly, one of the objects of the present invention is to provide a pin bushing assembly for a mechanical device.
In order to solve the above problems, the present invention adopts the following technical solutions.
A pin shaft sleeve assembly of mechanical equipment comprises a pin shaft body and a shaft sleeve body;
the pin shaft body comprises a mounting part, and the shaft sleeve body is assembled on the mounting part;
the surface of the mounting part is provided with an alloy wear-resistant layer which is a frosted structure formed by cladding alloy materials on the surface of the mounting part;
the shaft sleeve body comprises a stabilizing disc, a bearing and a stabilizing sheet, and the stabilizing disc, the bearing and the stabilizing sheet are sequentially sleeved on the mounting part of the pin shaft body and are in interference fit with the mounting part;
a blocking disc is arranged on one side, located on the stabilizing disc, of the shaft sleeve body, the blocking disc is sleeved on the pin shaft body in an interference fit mode, and the blocking disc abuts against the side wall of the stabilizing disc;
the side wall of one side of the stabilizing disc close to the blocking disc is provided with an assembling groove, one side of the blocking disc close to the stabilizing disc is provided with a clamping piece, and after the blocking disc is assembled on the pin shaft body and is abutted against the side wall of the stabilizing disc, the clamping piece is clamped in the assembling groove.
Preferably, the alloy material comprises the following components in percentage by weight:
15% -19% of chromium powder; 16-18% of tungsten carbide powder; 3-5% of nickel-based alloy powder and the balance of iron powder.
Preferably, the alloy wear-resistant layer is formed by cladding alloy materials on the surface of the mounting part in an electric arc or plasma arc or laser heat source cladding mode.
Preferably, a fixing edge is integrally formed on one side, close to the bearing, of the stabilizing disc, an oil storage cavity is formed between the fixing edge and the stabilizing disc, an oil inlet is formed in the side wall of the fixing edge, and the oil inlet is communicated with the oil storage cavity.
Preferably, a connecting sheet is arranged between the stabilizing disc and the bearing, and the connecting sheet is attached to the side face of the fixing edge and seals the side face of the fixing edge.
The invention also aims to provide a wear-resisting test method of the mechanical equipment pin shaft, which comprises the following specific steps:
the first step is as follows: selecting twenty pin shaft bodies with alloy wear-resistant layers, and weaving the pin shaft bodies into 2 groups, wherein each group is numbered 1-10 respectively;
the second step is that: sequentially fixing a group of pin shaft bodies with numbers of 1-10 and alloy wear-resistant layers on a rotating turntable, driving 2 rotating wheels to rotate by a paint film abrasion meter, mounting 150-mesh abrasive paper on the 2 rotating wheels, rubbing the alloy wear-resistant layers by the 2 rotating wheels, and recording the cycle number of unit wear thickness;
and thirdly, replacing the abrasive paper on 2 rotating wheels, assembling 400-mesh abrasive paper on the 2 rotating wheels, performing a friction test on the other group of pin shaft bodies which are numbered 1-10 and provided with the alloy wear-resistant layers again, and recording the cycle times of unit wear thickness.
Advantageous effects
Compared with the prior art, the invention has the beneficial effects that:
(1) according to the hinge pin of the mechanical equipment, the installation part is arranged on the hinge pin, the alloy wear-resistant layer is arranged on the surface of the installation part and is coated on the side wall of the installation part in a cladding mode through alloy materials, and the alloy materials in the hinge pin adopt chromium powder, tungsten carbide powder, nickel-based alloy powder and iron powder, so that the impact resistance and wear resistance of the alloy wear-resistant layer are improved;
(2) the shaft sleeve comprises a stabilizing disc, a fixing edge is arranged on the stabilizing disc, an oil storage cavity is formed between the fixing edge and the stabilizing disc, and lubricating oil can be added into the oil storage cavity through an oil inlet, so that the lubricating oil can continuously enter the surface of a pin shaft when the pin shaft is used, and the service lives of the pin shaft and the shaft sleeve are prolonged;
(3) the shaft sleeve further comprises a blocking disc, the blocking disc is connected with the pin shaft in an interference fit mode, so that the stability between the blocking disc and the pin shaft is improved, the blocking disc plays a blocking role in the shaft sleeve, the stability between the shaft sleeve and the pin shaft is improved, and the shaft sleeve is prevented from rotating along the length direction of the pin shaft.
(4) According to the blocking disc, the clamping piece is arranged on one side close to the shaft sleeve, the assembling groove is formed on one side close to the blocking disc of the stabilizing disc, after the blocking disc is assembled on the pin shaft body and abutted against the side wall of the stabilizing disc, the clamping piece is clamped in the assembling groove, the clamping piece is matched with the assembling groove to prevent the shaft sleeve from rotating along the pin shaft, and the stability between the shaft sleeve and the pin shaft is further enhanced.
(5) The shaft sleeve is assembled on the installation part of the pin shaft, the surface of the installation part is coated with the alloy wear-resistant layer, and the alloy wear-resistant layer further enhances the stability between the shaft sleeve and the pin shaft due to the frosted structure of the alloy wear-resistant layer, so that the condition that the shaft sleeve rotates relatively along the pin shaft is avoided, and the stability between the pin shaft and the shaft sleeve is greatly improved.
Drawings
FIG. 1 is a state diagram of the invention after the assembly of the pin shaft and the shaft sleeve is completed;
FIG. 2 is an exploded view of the assembly structure of the pin shaft and the shaft sleeve of the present invention;
FIG. 3 is a cross-sectional view of the assembled pin and sleeve of the present invention;
FIG. 4 is a side view of the pin shaft and the sleeve of the present invention after they are assembled;
FIG. 5 is a structural sectional view of the sleeve of the present invention;
FIG. 6 is an exploded perspective view of the sleeve of the present invention;
FIG. 7 is a schematic view of the structure of the stabilization plate of the present invention;
FIG. 8 is a side cross-sectional view of a stabilizing disk of the present invention;
FIG. 9 is a cross-sectional view of the assembled pin and bushing assembly in accordance with another embodiment of the present invention;
FIG. 10 is an enlarged view of the structure of FIG. 9 at A;
FIG. 11 is an exploded view of the assembly of the stabilizing plate and the blocking plate of the present invention;
FIG. 12 is a right side view of the stabilizing disc of FIG. 11;
fig. 13 is a schematic structural view of a pin according to another embodiment of the present invention.
The corresponding relationship between the reference numbers of the figures and the names of the components in the figures is as follows:
10. a pin shaft body; 11. an installation part; 12. an alloy wear layer;
20. a shaft sleeve body; 21. a blocking disk; 22. a stabilizing disc; 23. a bearing; 24. a stabilizing sheet; 25. connecting sheets;
211. a clamping piece; 221. a fixing edge; 222. an oil storage cavity; 223. an oil inlet; 224. and assembling the groove.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, but the present invention may be practiced in other ways than those specifically described and will be readily apparent to those of ordinary skill in the art without departing from the spirit of the present invention, and therefore the present invention is not limited to the specific embodiments disclosed below.
Furthermore, reference herein to "one embodiment" or "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one implementation of the invention. The appearances of the phrase "in one embodiment" in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments.
In the prior art, a pin shaft of a mechanical device is used together with a shaft sleeve, the pin shaft drives the shaft sleeve to rotate when rotating, as shown in fig. 4, a rotating force F of the pin shaft generates a reaction force F in the process of driving the shaft sleeve to rotate’After long-term use due to reaction force F’The present invention solves the above problems by adopting the following embodiments, because the relative movement between the shaft sleeve and the pin shaft tends to occur, thereby reducing the assembly stability between the shaft sleeve and the pin shaftTo give a title.
Example 1
As shown in fig. 1, which is a schematic structural diagram of a pin shaft sleeve assembly of a mechanical device in the present invention, the pin shaft sleeve assembly of the present embodiment includes a pin shaft body 10 and a sleeve body 20, in the present embodiment, the sleeve body 20 is assembled on the pin shaft body 10 in an interference fit manner, so that the pin shaft body 10 drives the sleeve body 20 to rotate in a rotating process.
As shown in fig. 2, in this embodiment, the pin body 10 includes a mounting portion 11, an outer diameter of the mounting portion 11 is smaller than an outer diameter of the pin body 10, and the sleeve body 20 is assembled on the mounting portion 11 to rotate along with the pin body 10.
As shown in fig. 3, 5 and 6, in this embodiment, the shaft sleeve body 20 includes a stabilizing disc 22, a bearing 23 and a stabilizing sheet 24, and the stabilizing disc 22, the bearing 23 and the stabilizing sheet 24 are sequentially sleeved on the mounting portion 11 of the pin shaft body 10 and are in interference fit with the mounting portion 11. Therefore, the sleeve body 20 is sleeved on the pin shaft body 10 and can rotate along with the pin shaft body 10.
As shown in fig. 6, 7 and 8, in this embodiment, a connecting piece 25 is disposed between the stabilizing disc 22 and the bearing 23, a fixing edge 221 is integrally formed on one side of the stabilizing disc 22 close to the bearing 23, an oil storage cavity 222 is formed between the fixing edge 221 and the stabilizing disc 22, an oil inlet 223 is formed in a side wall of the fixing edge 221, the oil inlet 223 is communicated with the oil storage cavity 222, in this embodiment, the connecting piece 25 is attached to a surface of the fixing edge 221 to seal a side surface of the oil storage cavity 222, so that the lubricating oil enters the oil storage cavity 222 through the oil inlet 223, the oil storage cavity 222 stores the lubricating oil, and when the pin body 10 and the sleeve body 20 are used, the lubricating oil is left on the surface of the pin body 10 through the oil storage cavity 222 and a gap between the connecting piece 25 and the fixing edge 221. In this embodiment, the oil storage cavity 222 is convenient for storing lubricating oil, so that the pin shaft body 10 and the shaft sleeve body 20 can be continuously supplemented with lubricating oil in the use process, and the service life of mechanical equipment is prolonged.
As shown in fig. 5 and 6, in order to further enhance the relative stability between the shaft sleeve body 20 and the pin shaft body 10, a blocking disc 21 is disposed on one side of the shaft sleeve body 20, which is located on the stabilizing disc 22, the blocking disc 21 is sleeved on the pin shaft body 10 in an interference fit manner, and the blocking disc 21 abuts against the side wall of the stabilizing disc 22, so as to further enhance the stability between the shaft sleeve body 20 and the pin shaft body 10, and avoid the problem that the shaft sleeve body 20 moves along the length direction of the pin shaft body 10.
Example 2
As shown in fig. 9 to 12, which are schematic structural diagrams of the stabilizing disc 22 and the blocking disc 21 in this embodiment, in the blocking disc 21 in this embodiment, on the basis of embodiment 1, an assembly groove 224 is formed on a side wall of the stabilizing disc 22 close to the blocking disc 21, a clamping member 211 is disposed on a side of the blocking disc 21 close to the stabilizing disc 22, and after the blocking disc 21 is assembled on the pin shaft body 10 and abuts against a side wall of the stabilizing disc 22, the clamping member 211 is clamped in the assembly groove 224, so that stability of the shaft sleeve body 20 is further improved, the problem that the shaft sleeve body 20 rotates on the pin shaft body 10 is avoided, and relative stability between the shaft sleeve body 20 and the pin shaft body 10 is enhanced.
Example 3
As shown in fig. 13, which is a schematic mechanism diagram of the pin body 10 in this embodiment, in the pin body 10 in this embodiment, on the basis of embodiment 1 or 2, the alloy wear-resistant layer 12 is disposed on the surface of the mounting portion 11, and the friction between the sleeve body 20 and the pin body 10 is further enhanced by the arrangement of the alloy wear-resistant layer 12, so that the relative stability between the sleeve body 20 and the pin body 10 is improved.
In this embodiment, the alloy wear-resistant layer 12 is formed by cladding the alloy material on the side surface of the mounting portion 11.
The alloy material comprises 15% of chromium powder, 20% of tungsten carbide powder, 3% of nickel-based alloy powder and the balance of iron powder by mass fraction.
The alloy material is clad on the side wall of the mounting portion 11 to form the alloy wear-resistant layer 12, wherein the cladding mode adopts an arc, plasma arc or laser heat source cladding mode, and it should be noted that the cladding mode in this embodiment includes but is not limited to the above mode, as long as the alloy material can form the alloy wear-resistant layer 12 on the side wall of the mounting portion 11.
In this embodiment, to above-mentioned round pin axle carry out the wearability test, the test mode is as follows:
the abrasion resistance test is carried out by adopting a Taber type paint film abrasion instrument, twenty pin shaft bodies 10 with alloy abrasion-resistant layers 12 are selected and are woven into 2 groups, each group is respectively numbered 1-10, the pin shaft bodies 10 with the alloy abrasion-resistant layers 12 and 1-10 in number are sequentially fixed on a rotating turntable, the Taber type paint film abrasion instrument drives 2 rotating wheels to rotate, 150-mesh abrasive paper is arranged on 2 rotating wheels, 2 rotating wheels rub the alloy abrasion-resistant layers 12, the test result is recorded by adopting a cycle number method, in order to further verify the abrasion resistance of the alloy abrasion-resistant layers, the 150-mesh abrasive paper is replaced by 400-mesh abrasive paper, the other pin shaft bodies 10 with the alloy abrasion-resistant layers 12 and 1-10 in number are subjected to the friction test again, and the recording result is as follows:
example 4
As shown in fig. 13, which is a schematic mechanism diagram of the pin body 10 in this embodiment, in the pin body 10 in this embodiment, on the basis of embodiment 1 or 2, the alloy wear-resistant layer 12 is disposed on the surface of the mounting portion 11, and the friction between the sleeve body 20 and the pin body 10 is further enhanced by the arrangement of the alloy wear-resistant layer 12, so that the relative stability between the sleeve body 20 and the pin body 10 is improved.
In this embodiment, the alloy wear-resistant layer 12 is formed by cladding the alloy material on the side surface of the mounting portion 11.
The alloy material comprises 18% of chromium powder, 16% of tungsten carbide powder, 4% of nickel-based alloy powder and the balance of iron powder by mass fraction.
The alloy material is clad on the side wall of the mounting portion 11 to form the alloy wear-resistant layer 12, wherein the cladding mode adopts an arc, plasma arc or laser heat source cladding mode, and it should be noted that the cladding mode in this embodiment includes but is not limited to the above mode, as long as the alloy material can form the alloy wear-resistant layer 12 on the side wall of the mounting portion 11.
In this embodiment, to above-mentioned round pin axle carry out the wearability test, the test mode is as follows:
the abrasion resistance test is carried out by adopting a Taber type paint film abrasion instrument, twenty pin shaft bodies 10 with alloy abrasion-resistant layers 12 are selected and are woven into 2 groups, each group is respectively numbered 1-10, the pin shaft bodies 10 with the alloy abrasion-resistant layers 12 and 1-10 in number are sequentially fixed on a rotating turntable, the Taber type paint film abrasion instrument drives 2 rotating wheels to rotate, 150-mesh abrasive paper is arranged on 2 rotating wheels, 2 rotating wheels rub the alloy abrasion-resistant layers 12, the test result is recorded by adopting a cycle number method, in order to further verify the abrasion resistance of the alloy abrasion-resistant layers, the 150-mesh abrasive paper is replaced by 400-mesh abrasive paper, the other pin shaft bodies 10 with the alloy abrasion-resistant layers 12 and 1-10 in number are subjected to the friction test again, and the recording result is as follows:
example 5
As shown in fig. 13, which is a schematic mechanism diagram of the pin body 10 in this embodiment, in the pin body 10 in this embodiment, on the basis of embodiment 1 or 2, the alloy wear-resistant layer 12 is disposed on the surface of the mounting portion 11, and the friction between the sleeve body 20 and the pin body 10 is further enhanced by the arrangement of the alloy wear-resistant layer 12, so that the relative stability between the sleeve body 20 and the pin body 10 is improved.
In this embodiment, the alloy wear-resistant layer 12 is formed by cladding the alloy material on the side surface of the mounting portion 11.
The alloy material comprises, by mass, 19% of chromium powder, 18% of tungsten carbide powder, 5% of nickel-based alloy powder and the balance of iron powder.
The alloy material is clad on the side wall of the mounting portion 11 to form the alloy wear-resistant layer 12, wherein the cladding mode adopts an arc, plasma arc or laser heat source cladding mode, and it should be noted that the cladding mode in this embodiment includes but is not limited to the above mode, as long as the alloy material can form the alloy wear-resistant layer 12 on the side wall of the mounting portion 11.
In this embodiment, to above-mentioned round pin axle carry out the wearability test, the test mode is as follows:
the abrasion resistance test is carried out by adopting a Taber type paint film abrasion instrument, twenty pin shaft bodies 10 with alloy abrasion-resistant layers 12 are selected and are woven into 2 groups, each group is respectively numbered 1-10, the pin shaft bodies 10 with the alloy abrasion-resistant layers 12 and 1-10 in number are sequentially fixed on a rotating turntable, the Taber type paint film abrasion instrument drives 2 rotating wheels to rotate, 150-mesh abrasive paper is arranged on 2 rotating wheels, 2 rotating wheels rub the alloy abrasion-resistant layers 12, the test result is recorded by adopting a cycle number method, in order to further verify the abrasion resistance of the alloy abrasion-resistant layers, the 150-mesh abrasive paper is replaced by 400-mesh abrasive paper, the other pin shaft bodies 10 with the alloy abrasion-resistant layers 12 and 1-10 in number are subjected to the friction test again, and the recording result is as follows:
according to the wear resistance test, the alloy wear-resistant layer 12 formed on the surface of the mounting part 11 by the arc, plasma arc or laser heat source cladding mode of the alloy material composed of chromium powder, tungsten carbide powder, nickel powder and iron powder has high impact resistance and wear resistance, and in addition, the friction force between the shaft sleeve body 20 and the surface of the mounting part 11 is enhanced due to the frosted characteristic of the formed alloy wear-resistant layer 12, so that the relative stability between the shaft sleeve body 20 and the pin shaft body 10 is improved.
Comparative example
In order to further verify the wear resistance of the wear-resistant alloy layer 12 of the pin shaft, in this comparative example, a common wear resistance test was performed in the following manner:
adopt Taber formula paint film wearing and tearing appearance to carry out the wearability test, select ordinary round pin axle twenty, compile into 2 groups, every group numbers 1~10 respectively, be fixed in proper order on the pivoted carousel with one group of round pin axle that numbers is 1~10, Taber formula paint film wearing and tearing appearance work orders about 2 runners and rotates, is equipped with 150 mesh abrasive paper on 2 runners, 2 the runner rotate abrasive paper and rub ordinary round pin axle, adopt circulation number method record test result, in addition, change 150 mesh abrasive paper into 400 mesh abrasive paper, carry out the friction test once more with another group of ordinary round pin axle that numbers is 1~10, the record result is as follows:
it can be known from the above abrasion resistance test and reference to the comparative example that the alloy material composed of chromium powder, tungsten carbide powder, nickel powder and iron powder, the alloy abrasion resistant layer 12 formed on the surface of the mounting part 11 by electric arc, plasma arc or laser heat source cladding has high impact resistance and abrasion resistance, in addition, because the formed alloy abrasion resistant layer 12 has the frosted characteristic, the friction force between the shaft sleeve body 20 and the surface of the mounting part 11 is enhanced, so that the relative stability between the shaft sleeve body 20 and the pin shaft body 10 is improved, in the embodiment, as can be known from the comparison between the embodiment and the comparative example, the assembly stability between the shaft sleeve body 20 and the pin shaft body 10 is improved by arranging the alloy abrasion resistant layer on the pin shaft in the embodiment, the pin shaft without the alloy abrasion resistant layer has low abrasion resistance, and the problem of the shaft sleeve assembly stability on the pin shaft is caused by the smoothness of the surface, therefore, the use of the pin shaft is influenced, on one hand, the arrangement of the alloy wear-resistant layer 12 enhances the assembly stability between the shaft sleeve body 20 and the pin shaft body 10, and on the other hand, the use performance of the pin shaft is also improved.
While the invention has been described in further detail in connection with specific embodiments thereof, it will be understood that the invention is not limited thereto, and that various other modifications and substitutions may be made by those skilled in the art without departing from the spirit of the invention, which should be considered to be within the scope of the invention as defined by the appended claims.
Claims (6)
1. A pin shaft sleeve component of mechanical equipment comprises a pin shaft body (10) and a shaft sleeve body (20);
the pin shaft body (10) comprises a mounting part (11), and the shaft sleeve body (20) is assembled on the mounting part (11); the method is characterized in that:
the surface of the mounting part (11) is provided with an alloy wear-resistant layer (12), and the alloy wear-resistant layer (12) is a frosted structure formed by cladding alloy materials on the surface of the mounting part (11);
the shaft sleeve body (20) comprises a stable disc (22), a bearing (23) and a stable sheet (24), wherein the stable disc (22), the bearing (23) and the stable sheet (24) are sequentially sleeved on the mounting part (11) of the pin shaft body (10) and are in interference fit with the mounting part (11);
a blocking disc (21) is arranged on one side, located on the stable disc (22), of the shaft sleeve body (20), the blocking disc (21) is sleeved on the pin shaft body (10) in an interference fit mode, and the blocking disc (21) abuts against the side wall of the stable disc (22);
the utility model discloses a stable dish (22) and stable dish (22) have been seted up on the lateral wall of one side that is close to and blocks dish (21) and have been seted up assembly groove (224), block dish (21) and be close to one side of stable dish (22) and be provided with joint spare (211), work as block dish (21) assembly on round pin axle body (10) and after the butt on stable dish (22) lateral wall, joint spare (211) joint be in assembly groove (224).
2. The pin bushing assembly of claim 1, wherein: the alloy material comprises the following components in percentage by weight:
15% -19% of chromium powder; 16-18% of tungsten carbide powder; 3-5% of nickel-based alloy powder and the balance of iron powder.
3. The pin bushing assembly of claim 1, wherein: the alloy wear-resistant layer (12) is formed by cladding alloy materials on the surface of the mounting part (11) in an electric arc or plasma arc or laser heat source cladding mode.
4. The pin bushing assembly of claim 1, wherein: one side of the stabilizing disc (22) close to the bearing (23) is integrally provided with a fixing edge (221), an oil storage cavity (222) is formed between the fixing edge (221) and the stabilizing disc (22), an oil inlet (223) is formed in the side wall of the fixing edge (221), and the oil inlet (223) is communicated with the oil storage cavity (222).
5. The pin shaft sleeve assembly of the mechanical device according to claim 4, wherein a connecting piece (25) is arranged between the stabilizing disc (22) and the bearing (23), and the connecting piece (25) is attached to the side surface of the fixing edge (221) and seals the side surface of the fixing edge (221).
6. A method for testing the wear resistance of a pin shaft, which is used for testing the wear resistance of an alloy wear-resistant layer (12) on a pin shaft body (10) in a pin shaft sleeve assembly of mechanical equipment as claimed in claim 2, wherein the alloy wear-resistant layer (12) is tested for the wear resistance through a paint film wear tester, and the method is characterized by comprising the following steps:
the first step is as follows: twenty pin shaft bodies (10) with alloy wear-resistant layers (12) are selected and are woven into 2 groups, and each group is numbered 1-10 respectively;
the second step is that: sequentially fixing a group of pin shaft bodies (10) which are numbered from 1 to 10 and provided with alloy wear-resistant layers (12) on a rotating turntable, driving 2 rotating wheels to rotate by a paint film abrasion meter, mounting 150-mesh abrasive paper on the 2 rotating wheels, and rubbing the alloy wear-resistant layers (12) by the 2 rotating wheels to record the cycle number of unit wear thickness;
and thirdly, replacing the abrasive paper on 2 rotating wheels, assembling 400-mesh abrasive paper on the 2 rotating wheels, performing friction test on the other group of pin shaft bodies (10) which are numbered 1-10 and provided with the alloy wear-resistant layers (12) again, and recording the cycle number of unit wear thickness.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111067989.4A CN113503308B (en) | 2021-09-13 | 2021-09-13 | Pin shaft sleeve assembly of mechanical equipment and pin shaft wear-resisting test method |
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| CN202111067989.4A CN113503308B (en) | 2021-09-13 | 2021-09-13 | Pin shaft sleeve assembly of mechanical equipment and pin shaft wear-resisting test method |
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| CN113503308B CN113503308B (en) | 2021-12-17 |
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| US5716143A (en) * | 1995-07-12 | 1998-02-10 | Allegheny Ludlum Corporation | Spherical plain bearing |
| CN104533960A (en) * | 2014-12-19 | 2015-04-22 | 昆山旭祥钣金工业有限公司 | Shaft sleeve of machine tool rotating shaft |
| CN110469655A (en) * | 2019-09-10 | 2019-11-19 | 南京高速齿轮制造有限公司 | A kind of toggle of wind turbine gearbox and pin shaft connection structure and wind turbine gearbox |
| CN210510228U (en) * | 2019-09-10 | 2020-05-12 | 南京高速齿轮制造有限公司 | Torsion arm and pin shaft connecting structure of wind power gear box and wind power gear box |
| CN212744708U (en) * | 2020-05-24 | 2021-03-19 | 吴江同新自润滑轴承厂 | Steering knuckle shaft sleeve for automobile chassis |
| CN214084194U (en) * | 2020-12-31 | 2021-08-31 | 广西宁达汽车科技有限公司 | Pin shaft for fixing brake pedal |
-
2021
- 2021-09-13 CN CN202111067989.4A patent/CN113503308B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5716143A (en) * | 1995-07-12 | 1998-02-10 | Allegheny Ludlum Corporation | Spherical plain bearing |
| CN104533960A (en) * | 2014-12-19 | 2015-04-22 | 昆山旭祥钣金工业有限公司 | Shaft sleeve of machine tool rotating shaft |
| CN110469655A (en) * | 2019-09-10 | 2019-11-19 | 南京高速齿轮制造有限公司 | A kind of toggle of wind turbine gearbox and pin shaft connection structure and wind turbine gearbox |
| CN210510228U (en) * | 2019-09-10 | 2020-05-12 | 南京高速齿轮制造有限公司 | Torsion arm and pin shaft connecting structure of wind power gear box and wind power gear box |
| CN212744708U (en) * | 2020-05-24 | 2021-03-19 | 吴江同新自润滑轴承厂 | Steering knuckle shaft sleeve for automobile chassis |
| CN214084194U (en) * | 2020-12-31 | 2021-08-31 | 广西宁达汽车科技有限公司 | Pin shaft for fixing brake pedal |
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| Publication number | Publication date |
|---|---|
| CN113503308B (en) | 2021-12-17 |
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