Front axle supporting shaft of engineering machinery

Abstract

The utility model discloses an engineering machinery front axle support shaft, which comprises a support shaft body, the top end of the support shaft body is fixedly connected with a butt joint block, the butt joint block is provided with a groove, the lower end of the support shaft body is fixedly connected with a base, and the lower side of the base is fixedly connected with a magnetic block. A plurality of sets of lubricating holes are formed in the supporting shaft body. According to the front axle supporting shaft of the engineering machinery, before the supporting shaft body is installed, a user can inject lubricating liquid into the liquid storage tank, at the moment, the lubricating liquid can be injected into the lubricating hole along the liquid storage tank, the lubricating liquid in the lubricating hole can soak slow-release cotton at the same time, the supporting shaft body is lubricated under the action of the slow-release cotton, and the lubricating effect of the supporting shaft body is improved. The reinforcing layer reinforces and supports the interior of the supporting shaft body, and under the action of the reinforcing ribs, the reinforcing layer and the supporting shaft body are in butt joint more tightly, so that the torsional strength of the supporting shaft body is improved, and the supporting shaft body is prevented from being bent.

Description

Technical Field

[0001] The utility model relates to the technical field of support shafts, in particular to a front axle support shaft of an engineering machinery. Background Art

[0002] The front axle support shaft of construction machinery is an important mechanical equipment accessory. It mainly provides support and stability for mechanical equipment to maintain the accuracy and stability of the front axle of construction machinery during processing or movement. It is an important part of the front axle system of construction machinery and is crucial to ensure the stability and performance of construction machinery. However, the existing support shaft still has defects and deficiencies in some aspects that need to be improved:

[0003] For example, a front axle support shaft for a loader with application number: CN201820692713.2, the support shaft is a stepped shaft with a stepped hole arranged inside, the first-level hole and the second-level hole of the stepped hole are transitioned by a first groove, the second-level hole and the third-level hole of the stepped hole are transitioned by a second groove, a first chamfer is arranged between the end of the first-level hole away from the first groove and the support shaft body, and a second chamfer is arranged between the end of the third-level hole away from the second groove and the support shaft body; a back cutter groove is arranged between the first-level shaft and the second-level shaft of the stepped shaft, the second-level shaft is a spline shaft, a first transition fillet is arranged between the third-level shaft and the fourth-level shaft of the stepped shaft, a third groove is arranged between the fourth-level shaft and the fifth-level shaft of the stepped shaft, and the end face of the fifth-level shaft is arc-shaped. The support shaft can enhance torsional strength and rigidity, improve the bending strength of the spline tooth root, increase the overall torsional strength and torsional rigidity of the support shaft by setting multiple chamfers and grooves, and increase the effective area of ​​the welding fusion zone between the support shaft and the bridge housing by setting the shaft end as an arc surface, thereby extending the service life of the drive axle and reducing maintenance costs.

[0004] The support shaft in the above document needs to be lubricated regularly during use in order to ensure better operation between the support shaft and the machine. The support shaft itself cannot be lubricated by itself, which brings unnecessary workload to the staff to a certain extent.

[0005] Although the support shaft in the above document increases its torsional resistance through the design of multiple chamfers and multiple grooves, the torsional resistance of the support shaft itself is still not enhanced. At the same time, the outer side of the support shaft is not treated with corrosion and wear resistance, which makes the service life of the support shaft itself not strong during use.

[0006] Therefore, we propose a front axle support shaft for engineering machinery to solve the above-mentioned problems. Utility Model Content

[0007] The utility model aims to provide a front axle support shaft of an engineering machinery to solve the problems in the above background technology that the support shaft itself cannot be lubricated and the torsion resistance of the support shaft itself is poor.

[0008] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a front axle support shaft of an engineering machinery, comprising a support shaft body, a top end of the support shaft body is fixedly connected to a docking block, and a groove is provided on the docking block, and a lower end of the support shaft body is fixedly connected to a base, and a magnetic block is fixedly connected to the lower side of the base;

[0009] Lubrication holes, wherein the lubrication holes are provided in a plurality of groups on the support shaft body;

[0010] A reinforcement layer is fixedly connected to the inner side of the support shaft body.

[0011] Furthermore, the outer side of the support shaft body is coated with an anti-oxidation layer, and the outer side of the anti-oxidation layer is coated with a wear-resistant layer.

[0012] Furthermore, the anti-oxidation layer is made of a double coating of TiSiN nano-coating and CrAlN nano-coating, and the TiSiN nano-coating and the CrAlN nano-coating are alternately deposited on the outer side of the support shaft body.

[0013] Furthermore, the wear-resistant layer is a boron nitride hard coating, and the wear-resistant layer completely wraps the anti-oxidation layer.

[0014] Furthermore, the support shaft body is provided with a first transition fillet and a second transition fillet, and the diameter of the support shaft body gradually increases from top to bottom through the first transition fillet and the second transition fillet.

[0015] Furthermore, a liquid storage tank is provided inside the support shaft body, and the liquid storage tank extends to the outer end of the support shaft body, and the liquid storage tank is connected with the lubrication hole;

[0016] The lubrication holes are nested with slow-release cotton, which is in a "T" shape when viewed from the front, and the inner end of the slow-release cotton is nested and connected inside the liquid storage tank.

[0017] Furthermore, a docking groove is provided on the inner side of the support shaft body, and a reinforcing rib is nested and fixedly connected inside the docking groove, and an outer end of the reinforcing rib is fixedly connected to the outer side of the reinforcing layer.

[0018] Compared with the prior art, the beneficial effects of the utility model are:

[0019] 1. The support shaft body is divided into three parts through the first transition fillet and the second transition fillet, and the diameter of the support shaft body increases step by step from top to bottom, thereby improving the strength of the support shaft body;

[0020] 2. The base is arranged at the bottom end of the support shaft body, and the diameter of the support shaft body is larger than the diameter of the support shaft body, thereby improving the stability of the support shaft body when docking. At the same time, the magnetic block arranged at the lower end of the base can further increase the strength of the support shaft body docking between mechanical parts;

[0021] 3. The reinforcement layer reinforces the interior of the support shaft body, and under the action of the reinforcement ribs, the reinforcement layer and the support shaft body are more closely connected, thereby improving the torsional strength of the support shaft body and preventing the support shaft body from bending;

[0022] 4. Before installing the support shaft body, the user can inject the lubricating liquid into the liquid reservoir. At this time, the lubricating liquid will be injected into the lubrication hole along the liquid reservoir. The lubricating liquid in the lubrication hole will soak the slow-release cotton. Under the action of the slow-release cotton, the support shaft body is lubricated;

[0023] 5. The wear-resistant layer can improve the strength of the outer surface of the support shaft body and the wear resistance of the support shaft body through the boron nitride hard coating. The anti-oxidation layer can improve the high-temperature oxidation resistance of the support shaft body to a certain extent, and enhance the service life and use effect of the support shaft body. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0025] Figure 2 This is a schematic diagram of the front cross-sectional structure of the utility model;

[0026] Figure 3 This is a schematic diagram of the top view structure of the utility model;

[0027] Figure 4 This is a schematic diagram of the front view structure of the reinforcement layer of the utility model;

[0028] Figure 5 This is a schematic diagram of the front view structure of the slow-release cotton of the utility model;

[0029] Figure 6 It is a schematic diagram of the three-dimensional structure of the wear-resistant layer of the utility model.

[0030] In the figure: 1. support shaft body; 2. lubrication hole; 3. groove; 4. docking block; 5. first transition fillet; 6. second transition fillet; 7. liquid storage tank; 8. sustained-release cotton; 9. base; 10. magnetic block; 11. wear-resistant layer; 12. anti-oxidation layer; 13. reinforcement layer; 14. reinforcement ribs; 15. docking groove. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0032] Embodiment 1: Figure 1 and Figure 4 The technical solution shown in the figure, the utility model provides the following technical solution: a front axle support shaft of an engineering machinery, a reinforcing layer 13 is disclosed, and the strength of the support shaft body 1 can be increased by the reinforcing layer 13:

[0033] A support shaft body 1, a docking block 4 is fixedly connected to the top of the support shaft body 1, and a groove 3 is provided on the docking block 4, and a base 9 is fixedly connected to the lower end of the support shaft body 1, and a magnetic block 10 is fixedly connected to the lower side of the base 9;

[0034] A docking groove 15 is formed on the inner side of the support shaft body 1 , and a reinforcing rib 14 is nested and fixedly connected inside the docking groove 15 , and the outer end of the reinforcing rib 14 is fixedly connected to the outer side of the reinforcing layer 13 .

[0035] The base 9 is arranged at the bottom end of the support shaft body 1, and the diameter of the support shaft body 1 is larger than the diameter of the support shaft body 1, thereby improving the stability of the support shaft body 1 when docking. At the same time, the magnetic block 10 arranged at the lower end of the base 9 can further make the support shaft body 1 have the strength of docking between mechanical parts. The reinforcement layer 13 strengthens the interior of the support shaft body 1, and under the action of the reinforcement ribs 14, the reinforcement layer 13 and the support shaft body 1 are more closely docked, thereby improving the torsional strength of the support shaft body 1 and preventing the support shaft body 1 from bending.

[0036] Embodiment 2: Figure 2 and Figure 4 The technical solution shown in the figure, the utility model provides the following technical solution: a front axle support shaft of an engineering machinery, a lubrication hole 2 is disclosed, and the support shaft body 1 can be lubricated through the lubrication hole 2:

[0037] Lubricating holes 2, multiple groups of lubricating holes 2 are opened on the support shaft body 1, and a reinforcing layer 13, the reinforcing layer 13 is fixedly connected to the inner side of the support shaft body 1;

[0038] A first transition fillet 5 and a second transition fillet 6 are provided on the support shaft body 1, and the diameter of the support shaft body 1 gradually increases from top to bottom through the first transition fillet 5 and the second transition fillet 6; a liquid storage tank 7 is opened inside the support shaft body 1, and the liquid storage tank 7 extends to the outer end of the support shaft body 1, and the liquid storage tank 7 is connected with the lubrication hole 2, and a slow-release cotton 8 is nested and connected between the lubrication holes 2, and the slow-release cotton 8 is "T"-shaped when viewed from the front, and the inner end of the slow-release cotton 8 is nested and connected inside the liquid storage tank 7.

[0039] Before installing the support shaft body 1, the user can inject the lubricating liquid into the liquid reservoir 7. At this time, the lubricating liquid will be injected into the lubrication hole 2 along the liquid reservoir 7. The lubricating liquid in the lubrication hole 2 will soak the slow-release cotton 8. Under the action of the slow-release cotton 8, the support shaft body 1 is lubricated.

[0040] Embodiment 3: Figure 1 , Figure 4 and Figure 5 The technical solution shown in the figure, the utility model provides the following technical solution: a front axle support shaft of an engineering machinery, disclosing an anti-oxidation layer 12 and a wear-resistant layer 11, through which the service life and use effect of the support shaft body 1 can be enhanced:

[0041] The outer side of the support shaft body 1 is coated with an anti-oxidation layer 12, and the outer side of the anti-oxidation layer 12 is coated with a wear-resistant layer 11. The anti-oxidation layer 12 is made of a double coating of TiSiN nano-coating and CrAlN nano-coating, and the TiSiN nano-coating and the CrAlN nano-coating are alternately deposited on the outer side of the support shaft body 1. The wear-resistant layer 11 is a boron nitride hard coating, and the wear-resistant layer 11 completely wraps the anti-oxidation layer 12.

[0042] The wear-resistant layer 11 can improve the strength of the outer surface of the support shaft body 1 and the wear resistance of the support shaft body 1 through the boron nitride hard coating. The anti-oxidation layer 12 can improve the high-temperature oxidation resistance of the support shaft body 1 to a certain extent, thereby enhancing the service life and use effect of the support shaft body 1.

[0043] The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field.

[0044] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A front axle support shaft of an engineering machinery, comprising a support shaft body (1), a top end of the support shaft body (1) being fixedly connected to a docking block (4), a groove (3) being provided on the docking block (4), and a bottom end of the support shaft body (1) being fixedly connected to a base (9), and a bottom side of the base (9) being fixedly connected to a magnetic block (10); Features: Also includes: Lubricating holes (2), wherein the lubricating holes (2) are provided in a plurality of groups on the supporting shaft body (1); A reinforcement layer (13), wherein the reinforcement layer (13) is fixedly connected to the inner side of the support shaft body (1).

2. The front axle support shaft of an engineering machinery according to claim 1, characterized in that: The outer side of the support shaft body (1) is coated with an anti-oxidation layer (12), and the outer side of the anti-oxidation layer (12) is coated with a wear-resistant layer (11).

3. The front axle support shaft of an engineering machinery according to claim 2, characterized in that: The anti-oxidation layer (12) is made of a double coating of a TiSiN nano coating and a CrAlN nano coating, and the TiSiN nano coating and the CrAlN nano coating are alternately deposited on the outer side of the support shaft body (1).

4. The front axle support shaft of an engineering machinery according to claim 2, characterized in that: The wear-resistant layer (11) is a boron nitride hard coating, and the wear-resistant layer (11) completely wraps the anti-oxidation layer (12).

5. The front axle support shaft of an engineering machinery according to claim 1, characterized in that: The support shaft body (1) is provided with a first transition fillet (5) and a second transition fillet (6), and the diameter of the support shaft body (1) gradually increases from top to bottom through the first transition fillet (5) and the second transition fillet (6).

6. The front axle support shaft of an engineering machinery according to claim 1, characterized in that: A liquid storage tank (7) is provided inside the support shaft body (1), and the liquid storage tank (7) extends to the outer end of the support shaft body (1), and the liquid storage tank (7) is connected to the lubrication hole (2); A slow-release cotton (8) is nested and connected between the lubrication holes (2), and the slow-release cotton (8) is in a "T" shape when viewed from the front, and the inner end of the slow-release cotton (8) is nested and connected inside the liquid storage tank (7).

7. The front axle support shaft of an engineering machinery according to claim 1, characterized in that: A docking groove (15) is provided on the inner side of the support shaft body (1), and a reinforcing rib (14) is nested and fixedly connected inside the docking groove (15), and the outer end of the reinforcing rib (14) is fixedly connected to the outer side of the reinforcing layer (13).

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