Anti-rust oil coating assembly and pushing jack

Abstract

The utility model relates to the technical field of advancing jacks, in particular to an anti-rust oil coating assembly and an advancing jack. The anti-rust oil coating assembly comprises an annular shell and a coating part, the annular shell is provided with an oil storage cavity, and an oil through hole communicating with the oil storage cavity is formed in the inner side wall of the annular shell; the annular shell is used for being connected with a guide sleeve of an advancing jack. The coating part is fixed on the inner side wall of the annular shell and covers the oil through hole; the coating part is used for adsorbing anti-rust oil in the oil storage cavity; and a piston rod of the pushing jack can penetrate through the annular shell and is in contact with the coating part. When the piston rod reciprocates along the length direction of the piston rod, the surface of the piston rod is contacted with the coating part adsorbed with anti-rust oil, so that the anti-rust oil can be coated on the surface of the piston rod by the coating part, the piston rod is prevented from being corroded by a flame retardant, and the service life of the hydraulic support provided with the advancing jack during underground operation is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of push jacks, in particular to an anti-rust oil coating component and a push jack. Background Art

[0002] When mining coal seams that are not prone to spontaneous combustion, it is necessary to establish fire prevention and extinguishing systems such as spraying inhibitors or injecting nitrogen. Among them, the inhibitors used for spraying inhibitors are generally chlorine-containing flame retardants. Therefore, the piston rod of the push jack in the mine is easily corroded by the flame retardant, resulting in large-scale rust and shedding.

[0003] In the prior art, in order to prevent the piston rod of the push jack from corrosion in the underground working environment, the piston rod of the hydraulic support is generally manually coated with anti-rust oil regularly. However, due to the underground environment and the height limit of the frame type, it is often impossible to evenly apply the anti-rust oil to the hard chrome plated layer of the piston rod by manual coating, and thus it is impossible to protect the piston rod from rust by coating the anti-rust oil. Utility Model Content

[0004] The utility model aims to solve at least one of the technical problems existing in the prior art or related technology.

[0005] To this end, the utility model provides an anti-rust oil coating component, which can realize the anti-rust oil coating on the surface of the piston rod, and effectively prevent the flame retardant from corroding the piston rod.

[0006] The utility model also provides a push jack comprising the anti-rust oil coating assembly.

[0007] According to the first aspect of the present invention, an anti-rust oil coating assembly is applied to a push jack, comprising:

[0008] The annular housing has an oil storage cavity, and an oil hole communicating with the oil storage cavity is formed on the inner wall of the annular housing; the annular housing is used to connect with the guide sleeve of the push jack;

[0009] The coating part is fixed on the inner side wall of the annular shell and covers the oil through hole; the coating part is used to absorb the anti-rust oil in the oil storage cavity; the piston rod of the push jack can pass through the annular shell and contact with the coating part.

[0010] Optionally, the oil storage cavity comprises an annular cavity, and the annular cavity and the annular shell are coaxially arranged; there are at least two oil holes, and the at least two oil holes are distributed along the inner circumference of the annular cavity.

[0011] Optionally, the annular shell includes a cylindrical inner shell plate, a cylindrical outer shell plate and a connecting plate, wherein the outer peripheral side of the connecting plate is connected to the cylindrical outer shell plate, and the inner peripheral side of the connecting plate is connected to the cylindrical inner shell plate;

[0012] After the annular shell is connected to the guide sleeve, the guide sleeve, the cylindrical inner shell plate, the cylindrical outer shell plate and the connecting plate can enclose a closed annular chamber.

[0013] Optionally, a sealing ring is provided at one end of the cylindrical inner shell plate close to the guide sleeve and at one end of the cylindrical outer shell plate close to the guide sleeve, and the sealing ring is used to seal the annular cavity.

[0014] Optionally, the annular housing is detachably connected to the guide sleeve via a bolt assembly.

[0015] Optionally, a connecting hole is provided on the annular shell, and a threaded hole is provided on the guide sleeve;

[0016] The bolt assembly comprises a screw rod and an anti-loosening washer. The screw rod passes through the anti-loosening washer and the connecting hole in sequence and is then threadedly matched with the threaded hole.

[0017] Optionally, the coating portion is arranged along the circumference of the inner side wall of the annular shell; wherein the coating portion is made of wool felt.

[0018] Optionally, a dust ring is provided on a side of the annular housing away from the guide sleeve, and the dust ring is used to prevent foreign matter on the piston rod from entering the cylinder barrel of the push jack.

[0019] Optionally, an oil filling port is provided on the annular shell, and an oil cup cover is provided on the oil filling port.

[0020] A push jack according to an embodiment of the second aspect of the utility model includes the anti-rust oil coating component of the first aspect or its various implementations.

[0021] One of the above technical solutions has at least the following advantages or beneficial effects:

[0022] For an anti-rust oil coating component of an embodiment of the utility model, by arranging an oil storage cavity capable of storing anti-rust oil on the annular shell and arranging a coating portion on the inner side wall of the annular shell, the anti-rust oil coating component has the functions of storing anti-rust oil and coating anti-rust oil, and can achieve that when the push jack does not change its own structure, by installing the anti-rust oil coating component on the guide sleeve, when the piston rod reciprocates along its length direction, its surface contacts with the coating portion adsorbed with anti-rust oil, and the coating portion can coat the surface of the piston rod with anti-rust oil, so as to prevent the flame retardant from corroding the piston rod, thereby extending the service life of the hydraulic support equipped with the push jack working underground.

[0023] The push jack provided in the embodiment of the utility model is provided with the above-mentioned anti-rust oil coating component. Since the anti-rust oil coating component has the above-mentioned technical effects, the push jack provided with the anti-rust oil coating component should also have corresponding technical effects. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 A schematic structural diagram of an anti-rust oil coating assembly according to an embodiment of the present invention is shown;

[0025] Figure 2 A cross-sectional view of an embodiment of the utility model provided with an anti-rust oil coating component is shown;

[0026] Figure 3 A schematic structural diagram of an annular housing according to an embodiment of the present invention is shown;

[0027] Figure 4 A schematic structural diagram of an annular housing according to another embodiment of the present invention is shown;

[0028] Figure 5 The utility model shows a schematic structural diagram of a push jack provided with an anti-rust oil coating component according to an embodiment of the present invention.

[0029] [Description of Reference Numerals]

[0030] 1. annular casing, 101. oil storage chamber, 102. oil through hole, 103. cylindrical inner shell plate, 104. cylindrical outer shell plate, 105. connecting plate, 106. connecting hole;

[0031] 2. Coating department;

[0032] 3. Push jack, 301, guide sleeve, 302, piston rod, 303, cylinder;

[0033] 4. Sealing ring;

[0034] 5. Bolt assembly, 501, screw rod, 502, anti-loosening pad;

[0035] 6. Dust ring;

[0036] 7. Oil cup cover. DETAILED DESCRIPTION

[0037] In order to better explain the present invention and facilitate understanding, the present invention is described in detail below through specific implementation modes in conjunction with the accompanying drawings.

[0038] With years of development of underground coal, high-quality coal mines are becoming increasingly scarce. The remaining underground coal mining environment is relatively harsh, and the safety requirements for implementation underground are becoming increasingly stringent. There is an obvious labor shortage underground. Therefore, underground coal mining companies have greatly improved the degree of automation and mechanization of coal mining machines.

[0039] When mining coal seams that are not prone to spontaneous combustion, it is necessary to establish fire prevention and extinguishing systems such as spraying retardants or injecting nitrogen. Since the concentration of the retardant used for spraying should be controlled at 15-20%, and the minimum should not be less than 10%, and in actual underground operations, chlorine-containing flame retardants are generally sprayed directly, therefore, large areas of rust and shedding will occur on the piston rod of the push jack underground.

[0040] In order to prevent the piston rod of the push jack from corrosion in the underground working environment, it is necessary to manually apply anti-rust oil to the piston rod of the hydraulic support regularly. Due to the underground environment and the height restrictions of the frame type, it is often impossible to evenly apply the hard chrome plating layer on the piston rod, which leads to a lower service life of the hydraulic support in the underground working environment.

[0041] In order to solve at least one of the technical problems existing in the prior art or related technology, the utility model provides an anti-rust oil coating component. By arranging an oil storage cavity capable of storing anti-rust oil on the annular shell and arranging a coating portion on the inner side wall of the annular shell, the anti-rust oil coating component has the functions of storing anti-rust oil and coating anti-rust oil. Moreover, when the push jack does not change its own structure, by installing the anti-rust oil coating component on the guide sleeve, the surface of the piston rod contacts with the coating portion adsorbed with the anti-rust oil when the piston rod reciprocates along its length direction, so that the coating portion can fully coat the surface of the piston rod with the anti-rust oil, so as to prevent the flame retardant from corroding the piston rod, thereby extending the service life of the hydraulic support provided with the push jack working underground.

[0042] The following describes the anti-rust oil coating assembly and the push jack according to some embodiments of the utility model with reference to the accompanying drawings.

[0043] See also Figures 1 to 5 An embodiment of the utility model provides an anti-rust oil coating assembly, which is applied to a push jack. The device includes an annular shell 1 and a coating portion 2. The annular shell 1 has an oil storage cavity 101, and an oil through hole 102 connected to the oil storage cavity 101 is opened on the inner wall thereof; the annular shell 1 is used to be connected to a guide sleeve 301 of a push jack 3; the coating portion 2 is fixed on the inner wall of the annular shell 1, and the coating portion 2 covers the oil through hole 102; the coating portion 2 is used to absorb the anti-rust oil in the oil storage cavity 101; the piston rod 302 of the push jack 3 can pass through the annular shell 1 and contact with the coating portion 2.

[0044] It should be noted that after the annular housing 1 is connected to the guide sleeve 301 , the piston rod 302 can pass through the annular housing 1 and reciprocate along the length direction of the piston rod 302 .

[0045] In this embodiment, by providing an oil storage cavity 101 capable of storing rust-proof oil on the annular shell 1 and providing a coating portion 2 on the inner wall of the annular shell 1, the rust-proof oil coating component has the functions of storing rust-proof oil and coating rust-proof oil, and can achieve that when the push jack 3 does not change its own structure, by installing the rust-proof oil coating component on the guide sleeve 301, the surface of the piston rod 302 is in direct contact with the coating portion 2 adsorbed with rust-proof oil when the piston rod 302 reciprocates along its length direction, and the coating portion 2 can fully coat the surface of the piston rod 302 with rust-proof oil, so as to prevent the flame retardant from corroding the piston rod 302, thereby extending the service life of the hydraulic support provided with the push jack 3 working underground.

[0046] In some possible embodiments, the oil storage chamber 101 includes an annular chamber, and the annular chamber and the annular shell 1 are coaxially arranged; there are at least two oil holes 102, and the at least two oil holes 102 are distributed along the inner circumference of the annular chamber.

[0047] It should be noted that after the annular housing 1 is connected to the guide sleeve 301 , the annular housing 1 and the annular cavity can be coaxially arranged with the piston rod 302 of the push jack 3 .

[0048] In this embodiment, the oil storage chamber 101 is designed as an annular chamber, and at least two oil holes 102 are distributed along the inner circumference of the annular chamber, so that the rust-proof oil in the oil storage chamber 101 can flow from the inner circumference of the annular chamber to the coating portion 2, and then the rust-proof oil in the oil storage chamber 101 absorbed by the coating portion 2 can circumferentially coat the side of the piston rod 302.

[0049] Furthermore, the annular shell 1 includes a cylindrical inner shell plate 103, a cylindrical outer shell plate 104 and a connecting plate 105, the outer peripheral side of the connecting plate 105 is connected to the cylindrical outer shell plate 104, and the inner peripheral side of the connecting plate 105 is connected to the cylindrical inner shell plate 103; after the annular shell 1 is connected to the guide sleeve 301, the guide sleeve 301, the cylindrical inner shell plate 103, the cylindrical outer shell plate 104 and the connecting plate 105 can form a closed annular cavity.

[0050] Here, the annular housing 1 can be prepared by casting. The oil hole 102 is opened on the cylindrical inner shell plate 103 .

[0051] It should be noted that the cylindrical inner shell plate 103 and the cylindrical outer shell plate 104 are coaxially arranged, and the cylindrical inner shell plate 103, the cylindrical outer shell plate 104 and the connecting plate 105 can form an annular groove, so that after the annular shell 1 is connected to the guide sleeve 301, the guide sleeve 301, the cylindrical inner shell plate 103, the cylindrical outer shell plate 104 and the connecting plate 105 can form a closed annular cavity.

[0052] In this embodiment, after the annular shell 1 is directly connected to the guide sleeve 301, the guide sleeve 301, the cylindrical inner shell plate 103, the cylindrical outer shell plate 104 and the connecting plate 105 form a closed annular cavity. Compared with directly setting a closed annular cavity on the annular shell 1, this embodiment can simplify the structure of the annular shell 1, facilitate the processing of the annular shell 1, and thus improve the processing efficiency of the annular shell 1.

[0053] Furthermore, a sealing ring 4 is provided at one end of the cylindrical inner shell plate 103 close to the guide sleeve 301 and at one end of the cylindrical outer shell plate 104 close to the guide sleeve 301 . The sealing ring 4 is used to seal the annular cavity.

[0054] Here, by providing a sealing ring 4 at one end of the cylindrical inner shell plate 103 close to the guide sleeve 301 and at one end of the cylindrical outer shell plate 104 close to the guide sleeve 301, the sealing ring 4 can seal the annular cavity after the annular shell 1 is directly connected to the guide sleeve 301 to prevent the anti-rust oil in the oil storage cavity 101 from overflowing from the contact position between the guide sleeve 301 and the annular shell 1.

[0055] In some possible embodiments, the annular housing 1 is detachably connected to the guide sleeve 301 via a bolt assembly 5 .

[0056] In this embodiment, the annular shell 1 and the guide sleeve 301 are detachably connected by the bolt assembly 5, which can improve the connection flexibility between the annular shell 1 and the guide sleeve 301, so as to facilitate the disassembly and assembly of the entire anti-rust oil coating assembly in the guide sleeve 301.

[0057] Furthermore, a connecting hole 106 is provided on the annular shell 1, and a threaded hole is provided on the guide sleeve 301; the bolt assembly 5 includes a screw rod 501 and an anti-loosening washer 502, and the screw rod 501 passes through the anti-loosening washer 502 and the connecting hole 106 in sequence and is threadedly connected with the threaded hole.

[0058] It should be noted that the connection hole 106 here can be opened on the connecting plate 105 of the annular shell 1; there can be at least two connection holes 106 here, and at least two connection holes 106 are distributed on the annular shell 1, and the number of threaded holes is the same as the number of connection holes 106. After the annular shell 1 is set close to the guide sleeve 301, the connection holes 106 can be set one by one with the threaded holes.

[0059] In this embodiment, by setting the anti-loosening pad 502, the problem of loosening of the threaded fit between the screw 501 and the threaded hole caused by the vibration generated by the operation of the push jack 3 can be avoided, thereby ensuring the connection stability of the annular shell 1 on the guide sleeve 301.

[0060] In some possible embodiments, the coating portion 2 is disposed along the circumference of the inner wall of the annular shell 1; wherein the coating portion 2 is made of wool felt.

[0061] It should be noted that an annular groove is opened along the circumference of the inner wall of the annular shell 1, and the coating part 2 can be arranged in the annular groove, so that the coating part 2 is arranged along the circumference of the inner wall of the annular shell 1; wherein, the thickness of the coating part 2 is greater than the depth of the annular groove, so that the distance between the side of the coating part 2 away from the inner wall of the annular shell 1 and the piston rod 302 is smaller than the distance between the inner wall of the annular shell 1 and the piston rod 302; in addition, the oil hole 102 is opened on the annular groove.

[0062] In this embodiment, by arranging the coating portion 2 along the circumferential direction of the inner wall of the annular shell 1 and making the coating portion 2 made of wool felt, the anti-rust oil adsorbed on the coating portion 2 can be evenly coated on the circumferential side of the piston rod 302 .

[0063] In some possible embodiments, a dust ring 6 is provided on the side of the annular housing 1 away from the guide sleeve 301 , and the dust ring 6 is used to prevent foreign matter on the piston rod 302 from entering the cylinder 303 of the push jack 3 .

[0064] Here, the dust seal 6 may be made of rubber; the inner diameter of the dust seal 6 is slightly larger than the diameter of the cross section of the piston rod 302 .

[0065] In this embodiment, by providing a dust ring 6 on the side of the annular shell 1 away from the guide sleeve 301, foreign matter such as coal ash and coal slime on the surface of the piston rod 302 can be effectively removed, so as to prevent foreign matter on the piston rod 302 from entering the cylinder 303 of the push jack 3, and avoid the problem that the anti-rust oil cannot effectively cover the surface of the piston rod 302 due to foreign matter adhering to the piston rod 302.

[0066] In some possible embodiments, an oil filling port is provided on the annular housing 1 , and an oil cup cover 7 is provided on the oil filling port.

[0067] Here, the oil cup cover 7 may be a spring oil cup.

[0068] In this embodiment, an oil filling port is provided on the annular housing 1 and an oil cup cover 7 is provided on the oil filling port, so that the anti-rust oil in the oil storage chamber 101 can be added conveniently.

[0069] The utility model provides a push jack according to an embodiment of the present invention. Figure 5 , the push jack includes an anti-rust oil coating component as in any of the above embodiments.

[0070] Here, the push jack may be a push jack.

[0071] Since the push jack of this embodiment includes any of the anti-rust oil coating components in the first aspect, it has the beneficial effects of any of the above embodiments, which will not be described in detail here.

[0072] In the description of the present utility model, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0073] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0074] In the present utility model, unless otherwise clearly specified and limited, when a first feature is “on” or “below” a second feature, it may be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, when a first feature is “above”, “above” or “above” a second feature, it may be that the first feature is directly above or obliquely above the second feature, or it may simply mean that the first feature is higher in level than the second feature. When a first feature is “below”, “below” or “below” a second feature, it may be that the first feature is directly below or obliquely below the second feature, or it may simply mean that the first feature is lower in level than the second feature.

[0075] In the description of this specification, the description of the terms "one embodiment", "some embodiments", "embodiment", "exemplary embodiment", "example", "specific example" or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, unless they are contradictory.

[0076] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are illustrative and cannot be understood as limitations of the present invention. Ordinary technicians in the field can change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. An anti-rust oil coating assembly, applied to a push jack, characterized in that: include: The annular housing has an oil storage cavity, and an oil hole communicating with the oil storage cavity is provided on the inner wall of the annular housing; the annular housing is used to connect with the guide sleeve of the push jack; The coating part is fixed on the inner side wall of the annular shell and covers the oil through hole; the coating part is used to absorb the anti-rust oil in the oil storage cavity; the piston rod of the push jack can pass through the annular shell and contact with the coating part.

2. The anti-rust oil coating assembly according to claim 1, characterized in that: The oil storage cavity comprises an annular cavity, and the annular cavity and the annular shell are coaxially arranged; there are at least two oil through holes, and at least two of the oil through holes are distributed along the inner circumference of the annular cavity.

3. The anti-rust oil coating assembly according to claim 2, characterized in that: The annular shell comprises a cylindrical inner shell plate, a cylindrical outer shell plate and a connecting plate, wherein the outer peripheral side of the connecting plate is connected to the cylindrical outer shell plate, and the inner peripheral side of the connecting plate is connected to the cylindrical inner shell plate; After the annular shell is connected to the guide sleeve, the guide sleeve, the cylindrical inner shell plate, the cylindrical outer shell plate and the connecting plate can enclose the closed annular cavity.

4. The anti-rust oil coating assembly according to claim 3, characterized in that: A sealing ring is provided at one end of the cylindrical inner shell plate close to the guide sleeve and at one end of the cylindrical outer shell plate close to the guide sleeve. The sealing ring is used to seal the annular cavity.

5. The anti-rust oil coating assembly according to claim 1, characterized in that: The annular housing is detachably connected to the guide sleeve via a bolt assembly.

6. The anti-rust oil coating assembly according to claim 5, characterized in that: The annular shell is provided with a connecting hole, and the guide sleeve is provided with a threaded hole; The bolt assembly comprises a screw rod and an anti-loosening washer. After the screw rod passes through the anti-loosening washer and the connecting hole in sequence, it is threadedly matched with the threaded hole.

7. The anti-rust oil coating assembly according to claim 1, characterized in that: The coating portion is arranged along the circumference of the inner side wall of the annular shell; wherein the coating portion is made of wool felt.

8. The anti-rust oil coating assembly according to claim 1, characterized in that: A dust ring is provided on one side of the annular housing away from the guide sleeve, and the dust ring is used to prevent foreign matter on the piston rod from entering the cylinder barrel of the push jack.

9. The anti-rust oil coating assembly according to any one of claims 1 to 8, characterized in that: An oil filling port is provided on the annular shell, and an oil cup cover is provided on the oil filling port.

10. A push jack, characterized in that: The invention comprises the anti-rust oil coating assembly as claimed in any one of claims 1 to 9.

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