Hydraulic slip ring device

Abstract

The invention provides a hydraulic slip ring device which comprises a cylinder barrel, a gland II and a plunger II, an integral type is changed into a split type, an outer ring of a fourth deep groove ball bearing is used as a positioning pin at the connecting part of a cylinder barrel III and the cylinder barrel II, the coaxiality of the two barrels is ensured, an inner ring of the fourth deep groove ball bearing is fixed on the plunger II, and the inner ring of the fourth deep groove ball bearing is fixed on the plunger II. The rotation precision of the cylinder barrel II and the cylinder barrel III is ensured; meanwhile, an inserting hole and an inserting column are arranged, and the inserting column is inserted into the inserting hole to be matched with a fourth deep groove ball bearing to achieve the coaxiality of the third cylinder barrel and the second cylinder barrel; by improving the structure of the slip ring, the working machining precision is improved, the machining difficulty is reduced, the machining cost is reduced, and the performance of a product is more stable. A sealing piece is arranged at the connecting position of the third cylinder barrel and the second cylinder barrel, it is guaranteed that the fourth deep groove ball bearing is waterproof and dustproof through the sealing piece, and the service life of the fourth deep groove ball bearing is prolonged. And the time cost and the maintenance cost caused by equipment maintenance are reduced.

Description

Technical Field

[0001] The invention relates to the technical field of hydraulic cylinders, and in particular to a hydraulic slip ring device. Background Art

[0002] The production process of continuously pouring high-temperature molten steel into ingots with a certain cross-sectional shape and certain size specifications is called continuous steel casting. The equipment required to complete this process is called a continuous casting equipment set. The electromechanical and hydraulic integration of steel casting equipment, continuous casting machine main equipment, cutting area equipment, ingot rod collection and conveying equipment constitutes the core equipment of continuous steel casting, which is usually called a continuous casting machine. The hydraulic slip ring is a device for realizing the transmission of compressed air, cooling water, hydraulic oil, heat transfer oil and other fluid media between two relatively rotating pipelines. It is also called a hydraulic rotary joint. It is currently widely used in the hydraulic systems of large machinery and equipment.

[0003] The existing hydraulic slip ring has many channels, a long total length, high processing accuracy, and the original cylinder design is an integral structure. Figure 1 The figure shows a semi-sectional structural diagram of a hydraulic slip ring device in the prior art. The prior hydraulic slip ring includes a plunger 1, a cylinder 1, a pressure cover 1, a first deep groove ball bearing, a through hole 1, a second deep groove ball bearing, a first annular groove and a second annular groove; the plunger 1 is arranged at one end of the device, and the pressure cover 1 is arranged at the other end of the device; the through hole 1 is installed at the center of the plunger 1; the cylinder 1 is an integral structure, and the inner hole is a through hole with a diameter of φ280mm; the matching part of the plunger 1 and the cylinder 1 is a rod with a diameter of φ280mm, and the plunger 1 and the cylinder 1 use the first deep groove ball bearing and the second deep groove ball bearing to ensure the rotation accuracy. The inner wall of the cylinder 1 is provided with a first annular groove and a second annular groove to realize the transmission of the medium.

[0004] The above-mentioned hydraulic slip ring has a simple structure, but is too difficult to process. The inner hole and groove parts have low processing accuracy, and the probability of producing scrap is increased. Due to its excessive length, when processing the groove part inside the cylinder, the tool handle of the lathe is too long, reaching the processing limit of the lathe, and the tool handle vibrates greatly during the processing, making it difficult to ensure the dimensional accuracy and form and position tolerance of the inner hole and groove of the cylinder, increasing the probability of producing scrap and increasing the production cost.

[0005] In summary, there is an urgent need for a hydraulic slip ring device to solve the above problems. Summary of the invention

[0006] In order to make up for the above shortcomings, the present invention provides a hydraulic slip ring device, which is used to solve the problems of the existing hydraulic slip rings mentioned above, such as being too difficult to process, low processing accuracy of the inner hole and the groove part, and increased probability of producing scrap; due to the excessive length, when processing the groove part in the cylinder, the tool handle of the lathe is too long, reaching the processing limit of the lathe, and the tool handle vibrates greatly during the processing, making it difficult to ensure the dimensional accuracy and form and position tolerance of the inner hole and the groove of the cylinder. The probability of producing scrap is increased, and the production cost is increased.

[0007] The present invention is achieved in that:

[0008] A hydraulic slip ring device comprises a cylinder, a second gland and a second plunger, wherein the cylinder comprises a second cylinder and a third cylinder, which are arranged concentrically, a through hole is arranged in the second cylinder; a through hole is arranged in the third cylinder; the diameter of the through hole in the second cylinder is larger than the diameter of the second through hole;

[0009] The second plunger is arranged at one end of the second cylinder away from the third cylinder, and the second gland is arranged at the other end of the device away from the second plunger;

[0010] A rotating core is fixedly installed at one end of the second plunger close to the second cylinder, and the rotating core is concentrically arranged with the second cylinder. The rotating core cooperates with the second cylinder and the third cylinder respectively. The diameter of the corresponding position of the rotating core and the third cylinder is equal to the diameter of the second through hole, the diameter of the corresponding position of the rotating core and the second cylinder is equal to the diameter of the through hole in the second cylinder, and the diameter of the corresponding position of the rotating core and the second cylinder is greater than the diameter of the second through hole;

[0011] A fourth deep groove ball bearing is provided at the connection portion between the cylinder barrel 3 and the cylinder barrel 2, and the outer ring of the fourth deep groove ball bearing is used for positioning and serves as a positioning pin. The inner ring of the fourth deep groove ball bearing is fixed on the rotating core to ensure the rotation accuracy of the cylinder barrel 3 and the cylinder barrel 2; at the same time, a plug-in hole is provided at one end of the cylinder barrel 2 close to the cylinder barrel 3, and a plug-in column is provided at one end of the cylinder barrel 3 close to the cylinder barrel 2. The plug-in column is plugged into the plug-in hole and cooperates with the fourth deep groove ball bearing to achieve the coaxiality of the cylinder barrel 3 and the cylinder barrel 2;

[0012] A third deep groove ball bearing is provided between the rotating core and the second cylinder, and the third deep groove ball bearing is provided at an end of the second cylinder away from the third cylinder; a fifth deep groove ball bearing is provided between the rotating core and the third cylinder, and the fifth deep groove ball bearing is provided at an end of the third cylinder away from the second cylinder;

[0013] A sealing ring 1 is also provided between the rotating core and the second cylinder, and the sealing ring 1 is provided between the third deep groove ball bearing and the fourth deep groove ball bearing; a sealing ring 2 is also provided between the rotating core and the third cylinder, and the sealing ring 2 is provided between the fifth deep groove ball bearing and the fourth deep groove ball bearing; the sealing member 1 and the sealing ring 2 are tightly fitted to the rotating core.

[0014] A groove is also provided at the connection portion between the cylinder barrel 3 and the cylinder barrel 2, the groove is provided outside the outer ring of the fourth deep groove ball bearing, and a sealing member is embedded in the groove;

[0015] The cylinder barrel 3 is provided with an oil hole. In order to ensure the normal operation of the fourth deep groove ball bearing, the oil hole is connected to one side of the fourth deep groove ball bearing, so that lubricating oil can be injected through the oil hole when necessary to ensure the lubrication of the fourth deep groove ball bearing.

[0016] A third annular groove is provided on the inner wall of the second cylinder barrel to realize the transmission of the medium.

[0017] As a preferred solution of the hydraulic slip ring device described in the present invention, the through hole in the second cylinder barrel is a through hole with a diameter of φ280 mm.

[0018] As a preferred solution of the hydraulic slip ring device described in the present invention, the second through hole is a through hole with a diameter of φ260 mm.

[0019] The beneficial effects of the present invention are:

[0020] 1. A hydraulic slip ring device shown in the present invention is changed from an integral type to a split type (the cylinder includes cylinder 2 and cylinder 3). The outer ring of the fourth deep groove ball bearing is used as a positioning pin at the connection between cylinder 3 and cylinder 2 to ensure the coaxiality of the two cylinders. The inner ring of the fourth deep groove ball bearing is fixed on plunger 2 to ensure the rotation accuracy of cylinder 2 and cylinder 3. At the same time, a plug-in hole is provided at one end of cylinder 2 close to cylinder 3, and a plug-in column is provided at one end of cylinder 3 close to cylinder 2. The plug-in column is plugged into the plug-in hole and cooperates with the fourth deep groove ball bearing to achieve the coaxiality of cylinder 3 and cylinder 2. Through the improvement of the slip ring structure, the working processing accuracy is improved, the processing difficulty is reduced, the occurrence of waste and defective products is avoided, the processing cost is reduced, and the performance of the product is more stable.

[0021] 2. A hydraulic slip ring device shown in the present invention makes the diameter of the through hole in the cylinder barrel 2 larger than the diameter of the through hole 2; the inner hole of the cylinder barrel 2 is a through hole with a diameter of φ280 mm, and the inner hole of the cylinder barrel 3 is a through hole with a diameter of φ260 mm. The installation position of the seal is stable to avoid damage to the seal during assembly. At the same time, the diameter of the through hole in the cylinder barrel 2 is different from the diameter of the through hole 2, which is clearly distinguished during installation, thereby improving the efficiency of the assembly process and reducing production costs.

[0022] 3. A hydraulic slip ring device shown in the present invention improves the rotating core and changes the matching parts with cylinder barrels 2 and 3 into stepped shafts with diameters of φ280mm and φ260mm respectively, so as to facilitate the assembly of bearings and seals and ensure the rotation accuracy of cylinder barrels 2 and 3.

[0023] 4. A hydraulic slip ring device shown in the present invention has a groove arranged at the connection position between the cylinder barrel three and the cylinder barrel two, the groove is arranged outside the outer ring of the fourth deep groove ball bearing, and a seal is embedded in the groove. The seal ensures that the fourth deep groove ball bearing is waterproof and dustproof, thereby extending the service life of the fourth deep groove ball bearing and reducing the time cost and maintenance cost caused by maintenance equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0025] Figure 1 It is a semi-sectional structural schematic diagram of a hydraulic slip ring device in the prior art;

[0026] Figure 2 It is a schematic diagram of a half-section structure of a hydraulic slip ring device in the present invention.

[0027] In the figure: 1, plunger 1; 2, cylinder barrel 1; 3, pressure cover 1; 4, first deep groove ball bearing; 5, through hole 1; 6, second deep groove ball bearing; 7, first annular groove; 8, second annular groove; 9, plunger 2; 10, third deep groove ball bearing; 11, rotating core; 12, cylinder barrel 2; 13, sealing ring 1; 14, fourth deep groove ball bearing; 15, sealing element; 16, cylinder barrel 3; 17, sealing ring 2; 18, fifth deep groove ball bearing; 19, pressure cover 2; 20, through hole 2; 21, oil hole; 22, third annular groove; 23, plug-in hole. DETAILED DESCRIPTION

[0028] First of all, it should be pointed out that in the different described embodiments, the same parts are provided with the same reference numerals or the same component names, wherein the disclosure contained in the entire description can be transferred to the same parts with the same reference numerals or the same component names. Selected positional descriptions in the description, such as top, bottom, lateral, etc., also refer to the directly described and shown figures and are transferred to the new positions in the case of a change in position.

[0029] Embodiment 1:

[0030] See also Figure 2 , the present invention provides a technical solution:

[0031] A hydraulic slip ring device comprises a cylinder, a pressure cover 19 and a plunger 9, which is changed from an integral type to a split type. The overall structure of the cylinder is split into a cylinder 12 and a cylinder 16 to avoid the lathe tool handle being too long when processing the groove part in the cylinder due to excessive length, reaching the processing limit of the lathe, and avoiding large vibration of the tool handle during processing, making it difficult to ensure the dimensional accuracy and form and position tolerance of the cylinder inner hole and the groove, increasing the probability of scrapping, and increasing the production cost.

[0032] The cylinder barrel 2 12 and the cylinder barrel 3 16 are concentrically arranged, and a through hole is arranged in the cylinder barrel 2 12; a through hole 20 is arranged in the cylinder barrel 3 16; the through hole in the cylinder barrel 2 12 is a through hole with a diameter of φ280 mm; the through hole 20 is a through hole with a diameter of φ260 mm; the diameter of the through hole in the cylinder barrel 2 12 is larger than the diameter of the through hole 20, thereby improving the efficiency of the assembly process; a groove is also arranged at the connection portion between the cylinder barrel 3 16 and the cylinder barrel 2 12, and the groove is arranged outside the outer ring of the fourth deep groove ball bearing 14, and a seal 15 is embedded in the groove; the installation position of the seal 15 is stable, thereby avoiding damage to the seal 15 during assembly and reducing production costs.

[0033] like Figure 2 As shown, the plunger 2 9 is arranged at one end of the cylinder 2 12 away from the cylinder 3 16, and the gland 2 19 is arranged at the other end of the device away from the plunger 2 9;

[0034] The end of the plunger 2 9 close to the cylinder 2 12 is fixedly mounted with a rotating core 11, and the rotating core 11 is arranged concentrically with the cylinder 2 12. The rotating core 11 is improved, and the matching parts with the cylinder 2 12 and the cylinder 3 16 are respectively changed to stepped shafts with a diameter of φ280mm and a diameter of φ260mm, so that the rotating core 11 is matched with the cylinder 2 12 and the cylinder 3 16 respectively;

[0035] The diameter of the corresponding position of the rotating core 11 and the cylinder barrel three 16 is equal to the diameter of the through hole two 20, the diameter of the corresponding position of the rotating core 11 and the cylinder barrel two 12 is equal to the diameter of the through hole in the cylinder barrel two 12, and the diameter of the corresponding position of the rotating core 11 and the cylinder barrel two 12 is greater than the diameter of the through hole two 20; at the same time, the rotation accuracy of the cylinder barrel two 12 and the cylinder barrel three 16 is guaranteed.

[0036] A fourth deep groove ball bearing 14 is also provided at the connection portion between the cylinder barrel three 16 and the cylinder barrel two 12, and the outer ring of the fourth deep groove ball bearing 14 is used for positioning and serves as a positioning pin; the seal 15 is arranged outside the outer wall of the fourth deep groove ball bearing 14, and at the same time, the seal 15 ensures that the fourth deep groove ball bearing 14 is waterproof and dustproof, thereby extending the service life of the fourth deep groove ball bearing 14 and reducing the time cost and maintenance cost brought by maintenance equipment.

[0037] The inner ring of the fourth deep groove ball bearing 14 is fixed on the rotating core 11 to ensure the rotation accuracy of the cylinder barrel 3 16 and the cylinder barrel 2 12; at the same time, the cylinder barrel 2 12 is provided with a plug-in hole 23 at one end close to the cylinder barrel 3 16, and the cylinder barrel 3 16 is provided with a plug-in column at one end close to the cylinder barrel 2 12, and the plug-in column is plugged into the plug-in hole 23 to cooperate with the fourth deep groove ball bearing 14 to achieve the coaxiality of the cylinder barrel 3 16 and the cylinder barrel 2 12;

[0038] A third deep groove ball bearing 10 is provided between the rotating core 11 and the second cylinder 12, and the third deep groove ball bearing 10 is provided at one end of the second cylinder 12 away from the third cylinder 16; a fifth deep groove ball bearing 18 is provided between the rotating core 11 and the third cylinder 16, and the fifth deep groove ball bearing 18 is provided at one end of the third cylinder 16 away from the second cylinder 12;

[0039] A sealing ring 13 is also provided between the rotating core 11 and the second cylinder 12, and the sealing ring 13 is arranged between the third deep groove ball bearing 10 and the fourth deep groove ball bearing 14; a sealing ring 2 17 is also provided between the rotating core 11 and the third cylinder 16, and the sealing ring 2 17 is arranged between the fifth deep groove ball bearing 18 and the fourth deep groove ball bearing 14; the sealing member 15 1 and the sealing ring 2 17 are tightly fitted with the rotating core 11.

[0040] The cylinder barrel 16 is provided with an oil hole 21. In order to ensure the normal operation of the fourth deep groove ball bearing 14, the oil hole 21 is connected to one side of the fourth deep groove ball bearing 14, so that lubricating oil can be injected through the oil hole 21 when necessary to ensure the lubrication of the fourth deep groove ball bearing 14.

[0041] A third annular groove 22 is provided on the inner wall of the second cylinder 12 to realize the transmission of the medium.

[0042] It should be noted that the specific installation method and control method of the second cylinder 12, the third cylinder 16 and the fourth deep groove ball bearing 14 in the present invention are all conventional designs and will not be elaborated in detail in the present invention.

[0043] In this article, relational terms such as first and second, etc. are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "comprise", "include" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the statement "comprise a ..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

[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 hydraulic slip ring device, comprising a cylinder, a second gland (19) and a second plunger (9); Features: The cylinder comprises a second cylinder (12) and a third cylinder (16), which are arranged concentrically. A through hole is arranged in the second cylinder (12); a second through hole (20) is arranged in the third cylinder (16); and the diameter of the through hole in the second cylinder (12) is larger than the diameter of the second through hole (20).

2. A hydraulic slip ring device according to claim 1, characterized in that: The second plunger (9) is arranged at the end of the second cylinder (12) away from the third cylinder (16), and a rotating core (11) is fixedly installed at the end of the second plunger (9) close to the second cylinder (12). The rotating core (11) is concentrically arranged with the second cylinder (12), and the rotating core (11) is matched with the second cylinder (12) and the third cylinder (16) respectively. The diameter of the corresponding position of the rotating core (11) and the third cylinder (16) is equal to the diameter of the second through hole (20), the diameter of the corresponding position of the rotating core (11) and the second cylinder (12) is equal to the diameter of the through hole in the second cylinder (12), and the diameter of the corresponding position of the rotating core (11) and the second cylinder (12) is greater than the diameter of the second through hole (20).

3. A hydraulic slip ring device according to claim 2, characterized in that: A fourth deep groove ball bearing (14) is provided at the connection portion between the cylinder barrel three (16) and the cylinder barrel two (12), and the outer ring of the fourth deep groove ball bearing (14) is used for positioning. The inner ring of the fourth deep groove ball bearing (14) is fixed on the rotating core (11), thereby ensuring the rotation accuracy of the cylinder barrel three (16) and the cylinder barrel two (12).

4. A hydraulic slip ring device according to claim 3, characterized in that: The end of the cylinder barrel 2 (12) close to the cylinder barrel 3 (16) is provided with a plug-in hole (23), and the end of the cylinder barrel 3 (16) close to the cylinder barrel 2 (12) is provided with a plug-in column, and the plug-in column is inserted into the plug-in hole (23) and cooperates with the fourth deep groove ball bearing (14) to achieve the coaxiality of the cylinder barrel 3 (16) and the cylinder barrel 2 (12).

5. A hydraulic slip ring device according to claim 3, characterized in that: A third deep groove ball bearing (10) is arranged between the rotating core (11) and the second cylinder (12), and the third deep groove ball bearing (10) is arranged at one end of the second cylinder (12) away from the third cylinder (16); a fifth deep groove ball bearing (18) is arranged between the rotating core (11) and the third cylinder (16), and the fifth deep groove ball bearing (18) is arranged at one end of the third cylinder (16) away from the second cylinder (12).

6. A hydraulic slip ring device according to claim 5, characterized in that: A sealing ring 1 (13) is also provided between the rotating core (11) and the second cylinder barrel (12), and the sealing ring 1 (13) is provided between the third deep groove ball bearing (10) and the fourth deep groove ball bearing (14); a sealing ring 2 (17) is also provided between the rotating core (11) and the third cylinder barrel (16), and the sealing ring 2 (17) is provided between the fifth deep groove ball bearing (18) and the fourth deep groove ball bearing (14); the sealing member (15) 1 and the sealing ring 2 (17) are tightly fitted to the rotating core (11).

7. A hydraulic slip ring device according to claim 3, characterized in that: A groove is also provided at the connection portion between the cylinder barrel three (16) and the cylinder barrel two (12), and the groove is provided outside the outer ring of the fourth deep groove ball bearing (14), and a sealing member (15) is embedded in the groove.

8. A hydraulic slip ring device according to claim 3, characterized in that: The cylinder barrel 3 (16) is provided with an oil hole (21). In order to ensure the normal operation of the fourth deep groove ball bearing (14), the oil hole (21) is connected to one side of the fourth deep groove ball bearing (14) to ensure the lubrication of the fourth deep groove ball bearing (14).

9. A hydraulic slip ring device according to claim 1, characterized in that: The through hole in the second cylinder barrel (12) is a through hole with a diameter of φ280 mm.

10. A hydraulic slip ring device according to claim 1, characterized in that: The second through hole (20) is a through hole with a diameter of φ260 mm.

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