Hydraulic coupling

Abstract

The utility model relates to the field of hydraulic couplings, in particular to a hydraulic coupler which comprises a coupler body, a main body used for placing shaft workpieces for coupling, and a front shaft sleeve which is arranged on one side of the coupler body and used for assisting in placing the shaft workpieces, and an oil injection port is formed in the upper portion of the coupler body. The hydraulic coupler is provided with the coupler body, the sealing groove, the sealing ring gasket, the sealing bolt, the hexagonal oil sleeve, the dustproof cover and the heat insulation protection layer, when the hydraulic coupler is used, due to the non-round opening design of the oil injection opening, the hexagonal oil sleeve can be directly arranged outside the oil injection opening in a sleeving mode, and therefore the oil injection range of the original oil injection opening is enlarged; an external hydraulic oil injection pipeline can be conveniently and directly inserted into the oil injection opening, then after hydraulic oil is injected, the sealing bolt can be screwed after being sleeved with a sealing ring gasket, the sealing capacity of the oil injection opening is enhanced through the sealing groove and the sealing ring gasket, and the leakage probability during hydraulic oil injection is reduced.

Description

Technical Field

[0001] The utility model relates to the field of hydraulic couplings, and particularly relates to a hydraulic coupling. Background Art

[0002] The hydraulic coupling realizes the flexible connection between two shafts through the way of hydraulic transmission, and has functions such as torque transmission, vibration absorption, and shock buffering. According to its structural characteristics and different application scenarios, the hydraulic coupling can be divided into various types, such as axial hydraulic couplings, radial hydraulic couplings, and bending hydraulic couplings, etc. The hydraulic coupling is exquisitely designed, occupies a small space, is convenient for installation and maintenance, and through the transmission of hydraulic oil, the coupling can smoothly transmit torque and reduce vibration and shock.

[0003] After retrieval, a hydraulic coupling with the publication number of CN220081973U specifically discloses a hydraulic coupling, which includes a shaft sleeve. One side of the shaft sleeve is fixedly connected with an inner ring. The surface of the inner ring is sleeved with an outer ring, and the inner side wall of the outer ring abuts against the outer side wall surface of the inner ring. A stop mechanism is installed at one end of the inner ring away from the shaft sleeve. The stop mechanism includes a limit ring, an installation ring, a connection ring, and a fixing ring. One end of the inner ring away from the shaft sleeve is fixedly connected with a fixing ring. One end of the fixing ring away from the inner ring is fixedly connected with an installation ring. A limit ring is installed on the outer side of the fixing ring, and the limit ring is slidably connected with the outer ring. A connection ring is provided on one side of the limit ring, and the connection ring is threadedly connected with the installation ring. A locking nut is threadedly connected to the surface of the connection ring, and the locking nut abuts against the surface of the outer ring, avoiding the device being affected by the temperature of the use environment, resulting in pressure loss after product deformation, short service life, excessive pressure at high temperature, easy damage of the product, and decreased locking force and reduced torque transmission at low temperature.

[0004] During the use of the existing hydraulic coupling, when injecting hydraulic oil into the oil injection hole by hydraulic means, due to the round hole design of the oil injection hole alone, when the hydraulic oil penetrates inward, it is easy to cause leakage, and the above comparative case lacks a method for preventing leakage when injecting hydraulic oil. In this way, not only will it cause waste of hydraulic oil after long-term use, but also the hydraulic oil will overheat when injected too fast, thus affecting the use of the internal shaft.

[0005] Therefore, it is very necessary to invent a hydraulic coupling to solve the above problems. Content of the Utility Model

[0006] The purpose of the present utility model is to provide a hydraulic coupling, which realizes the expansion of the oil injection range of the original oil injection port through the coupling body, the sealing groove, the sealing gasket, the sealing bolt, the hexagonal oil sleeve, the dust cover and the heat insulation protection layer, facilitates the direct insertion of the external hydraulic oil injection pipeline into the oil injection port, and then strengthens the sealing ability of the oil injection port through the sealing groove and the sealing gasket, reduces the probability of leakage during hydraulic oil injection, and the heat insulation protection layer can also reduce the impact on the internal shaft body when the hydraulic oil is injected too fast and overheated, ensuring the normal use effect of the hydraulic coupling, so as to solve the problems in the prior art that during the use of the hydraulic coupling, when injecting hydraulic oil into the oil injection hole by hydraulic means, due to the circular hole design of the oil injection hole, when the hydraulic oil penetrates inward, it is easy to cause leakage, and there is a lack of a leakage prevention method when injecting hydraulic oil in the above comparative cases. Such long-term use will not only cause waste of hydraulic oil, but also the hydraulic oil will overheat when injected too fast, thus affecting the use of the internal shaft.

[0007] To achieve the above purpose, the present utility model provides the following technical solutions: A hydraulic coupling, including a coupling body, which is the main body for placing shaft-like workpieces for shaft coupling;

[0008] A front shaft sleeve is arranged on one side of the coupling body for assisting in placing shaft-like workpieces, and an oil injection port is opened above the coupling body. One side of the oil injection port is provided with a lubricating oil port, and the other side of the lubricating oil port is provided with an oil return port;

[0009] An oil injection groove is arranged inside the coupling body for injecting hydraulic fluid, and a sealing groove is opened inside the oil injection port. A sealing gasket is movably connected inside the sealing groove, and a sealing bolt is arranged inside the sealing gasket;

[0010] A hexagonal oil sleeve is arranged inside the oil injection port for expanding the oil injection port, and a dust cover is arranged above the hexagonal oil sleeve. A heat insulation protection layer is pasted inside the coupling body.

[0011] Preferably, the sealing gasket is movably connected with the sealing groove, and the sealing bolt is threadedly connected with the oil injection port.

[0012] Preferably, inner longitudinal anti-slip lines are arranged inside the coupling body, and transverse anti-slip lines are arranged inside the front shaft sleeve.

[0013] Preferably, the number of the inner longitudinal anti-slip lines is set to be multiple, and the multiple inner longitudinal anti-slip lines are equally spaced inside the coupling body.

[0014] Preferably, the heat insulation protection layer is closely attached to the coupling body, and the material of the heat insulation protection layer is: yttrium oxide.

[0015] Preferably, an exhaust port is arranged outside the oil injection groove, and an exhaust plug is movably connected inside the exhaust port.

[0016] In the above technical solution, the technical effects and advantages provided by the present utility model are as follows:

[0017] The present utility model is provided with a coupling body, a sealing groove, a sealing ring gasket, a sealing bolt, a hexagonal oil sleeve, a dust cover and a heat insulation protection layer. When using this hydraulic coupling, since the oil injection port itself has a non-circular opening design, the hexagonal oil sleeve can be directly sleeved outside the oil injection port, thus expanding the oil injection range of the original oil injection port, facilitating the direct insertion of the external hydraulic oil injection pipeline into the oil injection port. Then, after injecting the hydraulic oil, a sealing ring gasket can be sleeved outside the sealing bolt and tightened. The sealing ability of the oil injection port is strengthened through the sealing groove and the sealing ring gasket, reducing the probability of leakage during hydraulic oil injection. At the same time, the heat insulation protection layer attached inside the coupling body enhances the internal heat insulation ability. In this way, even when the hydraulic oil is injected too quickly and overheats, the impact on the internal shaft body can be reduced, ensuring the normal use of this hydraulic coupling;

[0018] The present utility model is provided with a coupling body, an oil injection port, a lubricating oil port, an oil return port, an oil injection groove, an exhaust port and an exhaust plug. When using this hydraulic coupling, since the hydraulic oil injection will hinder the normal flow of the oil fluid together with the air inside the oil injection groove, resulting in energy loss and efficiency decline, before injecting the hydraulic oil through the oil injection port, the exhaust port outside the oil injection groove can be opened, and the exhaust plug can be pulled out to use an external exhaust device to exhaust the inside of the oil injection groove first. In this way, exhausting before oil injection can reduce the air in the oil injection groove, ensure a vacuum state, make the oil fluid flow more smoothly, thereby improving the working efficiency of the hydraulic coupling and avoiding affecting the expansion effect after oil injection. Description of the Drawings

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments recorded in the present invention. For those of ordinary skill in the art, other drawings can also be obtained based on these drawings.

[0020] Figure 1 It is a schematic diagram of the overall structure of the present utility model;

[0021] Figure 2 It is a schematic diagram of the structure of the sealing ring gasket of the present utility model;

[0022] Figure 3 It is a schematic diagram of the structure of the hexagonal oil sleeve of the present utility model;

[0023] Figure 4 It is a schematic diagram of the structure of the horizontal anti-slip pattern of the present utility model;

[0024] Figure 5 It is a schematic diagram of the structure of the exhaust plug of the present utility model.

[0025] Description of the reference numerals:

[0026] 1. Coupling body; 2. Front shaft sleeve; 3. Oil filling port; 4. Lubricating oil port; 5. Oil return port; 6. Oil filling groove; 7. Sealing groove; 8. Sealing ring gasket; 9. Sealing bolt; 10. Hexagonal oil sleeve; 11. Dust cover; 12. Inner longitudinal anti-slip pattern; 13. Transverse anti-slip pattern; 14. Heat insulation protective layer; 15. Exhaust port; 16. Exhaust plug. Detailed implementation manners

[0027] In order to enable those skilled in the art to better understand the technical solution of the present utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0028] The present utility model provides a hydraulic coupling as shown in Figures 1-5 which includes a coupling body 1, a main body for placing shaft-like workpieces for shaft coupling;

[0029] A front shaft sleeve 2 is arranged on one side of the coupling body 1 and is used to assist in placing the shaft-like workpiece. An oil filling port 3 is opened above the coupling body 1. A lubricating oil port 4 is arranged on one side of the oil filling port 3, and an oil return port 5 is arranged on the other side of the lubricating oil port 4;

[0030] An oil filling groove 6 is arranged inside the coupling body 1 and is used for injecting hydraulic fluid. A sealing groove 7 is opened inside the oil filling port 3. A sealing ring gasket 8 is movably connected inside the sealing groove 7, and a sealing bolt 9 is arranged inside the sealing ring gasket 8;

[0031] A hexagonal oil sleeve 10 is arranged inside the oil filling port 3 and is used to expand the oil filling port 3. A dust cover 11 is arranged above the hexagonal oil sleeve 10. A heat insulation protective layer 14 is pasted inside the coupling body 1. Since the oil filling port 3 itself has a non-circular opening design, the hexagonal oil sleeve 10 can be directly sleeved outside the oil filling port 3, thus expanding the oil filling range of the original oil filling port 3 and facilitating the direct insertion of an external hydraulic oil injection pipeline into the oil filling port 3.

[0032] As shown in Figure 1 、 Figure 2 and Figure 3As shown, the sealing ring gasket 8 is movably connected to the sealing groove 7, and the sealing bolt 9 is threadedly connected to the oil filling port 3. After filling with hydraulic oil, the sealing ring gasket 8 can be sleeved outside the sealing bolt 9 and tightened. The sealing ability of the oil filling port 3 is enhanced through the sealing groove 7 and the sealing ring gasket 8. Inside the coupling body 1, there are internal longitudinal anti-slip lines 12, and inside the front shaft sleeve 2, there are transverse anti-slip lines 13. The internal longitudinal anti-slip lines 12 and the transverse anti-slip lines 13 together enhance the friction when the coupling body 1 is connected to the shaft workpiece, ensuring the normal torque during the use of the hydraulic coupling. The number of the internal longitudinal anti-slip lines 12 is set to be multiple, and the multiple internal longitudinal anti-slip lines 12 are evenly distributed in the coupling body 1. The internal longitudinal anti-slip lines 12 and the transverse anti-slip lines 13 are staggered, making the shaft workpiece more stable inside the coupling body 1.

[0033] As Figure 1 , Figure 4 and Figure 5 shown, the heat insulation protective layer 14 is closely attached to the coupling body 1. The material of the heat insulation protective layer 14 is: yttrium oxide. The heat insulation protective layer 14 attached inside the coupling body 1 enhances the internal heat insulation ability. In this way, when the hydraulic oil is injected too fast and overheats, the impact on the internal shaft body can also be reduced, ensuring the normal use of the hydraulic coupling. An exhaust port 15 is provided outside the oil filling groove 6, and an exhaust plug 16 is movably connected inside the exhaust port 15. Through the exhaust port 15, air can be exhausted before oil injection, reducing the air in the oil filling groove 6, ensuring a vacuum state and making the oil flow more smoothly, thereby improving the working efficiency of the hydraulic coupling and avoiding affecting the expansion effect after oil injection.

[0034] Working principle of this utility model: First, take out this hydraulic coupling and the shaft workpiece to be connected. Align the shaft workpiece with the front bushing 2 of the coupling body 1 and insert it into the coupling body 1. Then, when hydraulic oil is injected, it will hinder the normal flow of the oil together with the air inside the oil injection groove 6, resulting in energy loss and efficiency decline. Before injecting hydraulic oil into the oil injection port 3, the exhaust port 15 outside the oil injection groove 6 can be opened, and the exhaust plug 16 can be pulled out to use an external exhaust device to exhaust the inside of the oil injection groove 6 first. In this way, exhausting before injecting oil can reduce the air in the oil injection groove 6 and ensure a vacuum state to make the oil flow more smoothly. Then, before taking the external oil injection pipeline, since the oil injection port 3 itself has a non-circular opening design, the hexagonal oil sleeve 10 can be directly sleeved outside the oil injection port 3, which expands the original oil injection range of the oil injection port 3 and facilitates the direct insertion of the external hydraulic oil injection pipeline into the oil injection port 3. Subsequently, as the hydraulic oil is continuously injected into the coupling body 1, it expands inside and clamps the internal shaft workpiece. At this time, the heat insulation protective layer 14 attached to the inside of the coupling body 1 enhances the internal heat insulation ability. In this way, when the hydraulic oil is injected too fast and overheats, it can also reduce the impact on the internal shaft body. Then, after injecting the hydraulic oil, a sealing gasket 8 can be sleeved outside the sealing bolt 9 and tightened. The sealing ability of the oil injection port 3 is enhanced through the sealing groove 7 and the sealing gasket 8, and the probability of leakage during hydraulic oil injection is reduced. Then, the internal expansion and clamping of the coupling body 1, together with the internal longitudinal anti-slip lines 12 and the transverse anti-slip lines 13, enhance the friction and clamping force when the coupling body 1 is connected to the shaft workpiece, ensuring the normal torque during the use of the hydraulic coupling. In this way, the hydraulic coupling and the shaft workpiece can be used normally. Finally, after completing all the installation and use work of the hydraulic coupling according to the above operations, the device can be maintained daily. The material of the heat insulation protective layer 14 is: yttrium oxide. Just like this, the use process of this hydraulic coupling is completed.

[0035] Only some exemplary embodiments of the present utility model are described by way of illustration above. Without doubt, for those of ordinary skill in the art, the described embodiments can be modified in various different ways without departing from the spirit and scope of the present utility model. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the protection scope of the claims of the present utility model.

Claims

1. A hydraulic coupling, characterized in that: include A coupling body (1), which is used to place a shaft workpiece for coupling; A front shaft sleeve (2) is arranged on one side of the coupling body (1) and is used to assist in placing shaft workpieces. An oil filling port (3) is provided above the coupling body (1). A lubricating oil port (4) is provided on one side of the oil filling port (3), and an oil return port (5) is provided on the other side of the lubricating oil port (4). An oil filling groove (6) is arranged inside the coupling body (1) and is used for injecting hydraulic fluid, and a sealing groove (7) is provided inside the oil filling port (3), a sealing ring gasket (8) is movably connected inside the sealing groove (7), and a sealing bolt (9) is provided inside the sealing ring gasket (8); A hexagonal oil sleeve (10) is arranged inside the oil filling port (3) and is used to enlarge the oil filling port (3). A dust cover (11) is arranged above the hexagonal oil sleeve (10). A heat insulation protective layer (14) is adhered to the inside of the coupling body (1).

2. A hydraulic coupling according to claim 1, characterized in that: The sealing ring gasket (8) is movably connected to the sealing groove (7), and the sealing bolt (9) is threadedly connected to the oil filling port (3).

3. A hydraulic coupling according to claim 1, characterized in that: The coupling body (1) is provided with inner longitudinal anti-skid grooves (12) inside, and the front shaft sleeve (2) is provided with transverse anti-skid grooves (13) inside.

4. A hydraulic coupling according to claim 3, characterized in that: The number of the inner longitudinal anti-slip grooves (12) is set to be multiple, and the multiple inner longitudinal anti-slip grooves (12) are distributed at equal intervals in the coupling body (1).

5. A hydraulic coupling according to claim 1, characterized in that: The heat-insulating protective layer (14) is tightly fitted to the coupling body (1), and the material of the heat-insulating protective layer (14) is yttrium oxide.

6. A hydraulic coupling according to claim 1, characterized in that: An exhaust port (15) is provided outside the oil filling groove (6), and an exhaust plug (16) is movably connected inside the exhaust port (15).

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