Flexible connection structure of high-pressure oil pipe of hydraulic system

Abstract

The utility model relates to the field of hydraulic system, and specifically is a kind of flexible connection structure of hydraulic system high pressure oil pipe, including first oil port connector and second oil port connector;The utility model is through being provided with connecting mechanism, by pushing first connecting oil pipe rotation, by the rotation of first connecting oil pipe drive first ball head rotation, angle adjustment of first ball seat can be carried out, after the adjustment of first ball head is completed, by pushing second connecting oil pipe rotation, by the rotation of second connecting oil pipe drive second ball head rotation, angle adjustment of second ball seat can be carried out, can make first oil pipe connector and second oil pipe connector completely adhere to the surface of first oil port connector and flange, solve the problem of due to the adoption of rigid connection, the oil pipe joint both ends in oil pipe combination and the oil port connector both ends in hydraulic component butt joint, there is prone to the problem of big size tolerance, big position tolerance, leading to that sealing plane cannot completely adhere, and oil leakage problem is prone to appear when using.

Description

Technical Field

[0001] This utility model relates to the field of hydraulic systems, specifically a flexible connection structure for high-pressure oil pipes in hydraulic systems. Background Technology

[0002] Hydraulic transmission systems are widely used in the industrial field. Pipelines are used to connect various hydraulic components. To withstand high pressure, seamless steel pipes are usually used as oil pipes to transmit hydraulic oil in high-pressure systems.

[0003] The existing oil pipe structure involves first cutting seamless steel pipes to the required length, then bending them at the corresponding positions under pressure to form the shape required to connect hydraulic components, and then welding oil pipe joints to form an oil pipe assembly that connects the hydraulic components at both ends. However, due to the use of rigid connection, when the two ends of the oil pipe joint in the oil pipe assembly are mated with the two ends of the oil port joint in the hydraulic component, there is a tendency for large dimensional tolerances and large positional tolerances to occur, resulting in the sealing plane not being able to fit completely, which can easily lead to oil leakage during use. Utility Model Content

[0004] To overcome the shortcomings of existing technologies, due to the use of rigid connections, when the two ends of the oil pipe joint in the oil pipe assembly are connected to the two ends of the oil port joint in the hydraulic component, there is a tendency for large dimensional and positional tolerances to occur, resulting in the sealing plane not being able to fit completely and oil leakage problems during use. This utility model proposes a flexible connection structure for high-pressure oil pipes in hydraulic systems.

[0005] The technical solution adopted by this utility model to solve its technical problem is: a flexible connection structure for high-pressure oil pipes in a hydraulic system, including a first oil port connector and a second oil port connector, and a connection mechanism is installed on the top of both the first oil port connector and the second oil port connector.

[0006] The connecting mechanism includes a first oil pipe connector, the bottom of which is connected to the top of a first oil port connector. A first connecting oil pipe is connected to the right side of the first oil pipe connector. A first ball head is fixedly connected to the right side of the first connecting oil pipe. A first ball seat is rotatably connected to the surface of the first ball head. A second connecting oil pipe is connected to the right side of the first ball seat. A second ball head is fixedly connected to the right side of the second connecting oil pipe. A second ball seat is rotatably connected to the surface of the second ball head. A third connecting oil pipe is connected to the right side of the second ball seat. A second oil pipe connector is connected to the right side of the third connecting oil pipe. The bottom of the second oil pipe connector is connected to the top of a second oil port connector.

[0007] Preferably, the inner cavities of the first ball seat and the second ball seat are provided with movable grooves, and pressure plates are movably connected to the inner cavities of the movable grooves. One side of the pressure plate is tightly fitted to the surface of the first ball head and the second ball head, respectively.

[0008] Preferably, the inner cavity of the pressure plate is threaded with screws, and the surfaces of the screws are threadedly connected to the inner cavities of the first ball seat and the second ball seat, respectively.

[0009] Preferably, the inner cavity of the movable groove is provided with a positioning groove, and a positioning rod is slidably connected to the inner cavity of the positioning groove. One side of the positioning rod is fixedly connected to the surface of the pressure plate.

[0010] Preferably, the inner cavities of the first ball seat and the second ball seat are provided with fixing grooves, and O-rings are installed in the inner cavities of the fixing grooves. The inner cavities of the O-rings are tightly fitted to the surfaces of the first ball head and the second ball head, respectively.

[0011] Preferably, the surfaces of the first oil pipe joint, the first connecting oil pipe, the second connecting oil pipe and the third connecting oil pipe are all fixedly connected with sealing rings. There are four sealing rings, one of which has its left side in contact with the right side of the first ball seat, and the other of which has its left side in contact with the right side of the second ball seat.

[0012] Preferably, the surfaces of the first oil port connector, the second oil port connector, the first oil pipe connector, and the second oil pipe connector are all fixedly connected with flanges, and the inner cavities of the flanges are threaded with fixing bolts.

[0013] The advantages of this utility model are:

[0014] This invention, through the setting of a connecting mechanism, allows for the adjustment of the angle of the first ball seat by rotating the first connecting oil pipe, which in turn drives the first ball head to rotate. After the first ball head is adjusted, the angle of the second ball seat can be adjusted by rotating the second connecting oil pipe, which in turn drives the second ball head to rotate. This ensures that the first and second oil pipe joints are fully fitted onto the surfaces of the first oil port joint and the flange. This solves the problem that, due to the rigid connection, the two ends of the oil pipe joint in the oil pipe assembly are prone to large dimensional and positional tolerances when aligning with the two ends of the oil port joint in the hydraulic component, resulting in incomplete sealing and easy oil leakage during use. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the structure of this utility model;

[0017] Figure 2 This is a cross-sectional view of the first and second ball seats of this utility model;

[0018] Figure 3 This is a schematic diagram of the structure of the first ball seat of this utility model;

[0019] Figure 4 This is a schematic diagram of the structure of the pressure plate of this utility model.

[0020] In the diagram: 1. First oil port connector; 2. Connecting mechanism; 201. First oil pipe connector; 202. First connecting oil pipe; 203. First ball seat; 204. Second connecting oil pipe; 205. Second ball seat; 206. Third connecting oil pipe; 207. Second oil pipe connector; 208. Sealing ring; 209. First ball head; 210. Second ball head; 211. Pressure plate; 212. Screw; 213. Fixed groove; 214. Movable groove; 215. Positioning groove; 216. Positioning rod; 217. O-ring; 3. Second oil port connector; 4. Flange. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0022] The following is in conjunction with the appendix Figure 1-4 This application will be described in further detail.

[0023] This application discloses a flexible connection structure for high-pressure oil pipes in a hydraulic system. (Refer to...) Figure 1 and Figure 2 A flexible connection structure for high-pressure oil pipes in a hydraulic system includes a first oil port connector 1 and a second oil port connector 3, with a connection mechanism 2 installed on the top of both the first oil port connector 1 and the second oil port connector 3.

[0024] The connecting mechanism 2 includes a first oil pipe connector 201, the bottom of which is connected to the top of a first oil port connector 1. A first connecting oil pipe 202 is connected to the right side of the first oil pipe connector 201. A first ball head 209 is fixedly connected to the right side of the first connecting oil pipe 202. A first ball seat 203 is rotatably connected to the surface of the first ball head 209. A second connecting oil pipe 204 is connected to the right side of the first ball seat 203. A second ball head 210 is fixedly connected to the right side of the second connecting oil pipe 204. A second ball seat 205 is rotatably connected to the surface of the second ball head 210. A third connecting oil pipe 206 is connected to the right side of the second ball seat 205. A second oil pipe connector 207 is connected to the right side of the third connecting oil pipe 206. The bottom of the second oil pipe connector 207 is connected to the top of a second oil port connector 3. When connecting the first oil port 1 and the second oil port 3, the first connecting oil pipe 202 is rotated first. The rotation of the first connecting oil pipe 202 causes the first ball head 209 to rotate inside the first ball seat 203, thereby adjusting the angle of the first ball seat 203. After the first ball head 209 is adjusted, the second connecting oil pipe 204 is rotated. The rotation of the second connecting oil pipe 204 causes the second ball head 210 to rotate, thereby adjusting the angle of the second ball seat 205. This allows the first oil pipe connector 201 and the second oil pipe connector 207 to completely fit against the surfaces of the first oil port 1 and the flange 4. The angles of the first ball seat 203 and the second ball seat 205 can be adjusted according to the positions of the first oil port 1 and the second oil port 3.

[0025] Reference Figure 2 , Figure 3 and Figure 4 The inner cavities of the first ball seat 203 and the second ball seat 205 are each provided with a movable groove 214. A pressure plate 211 is movably connected to the inner cavity of the movable groove 214. One side of the pressure plate 211 is tightly fitted to the surface of the first ball head 209 and the second ball head 210, respectively. The movable groove 214 facilitates the pressure plate 211 to enter the interior of the first ball seat 203 and the second ball seat 205, thereby allowing for preliminary positioning of the pressure plate 211. At the same time, the pressure plate 211 fixes the position of the first ball head 209 and the second ball head 210, preventing them from rotating again after being in place, which would affect the communication effect between the first oil port connector 1 and the second oil port connector 3.

[0026] Reference Figure 2 , Figure 3 and Figure 4The inner cavity of the pressure plate 211 is threaded with screws 212. The surfaces of the screws 212 are threadedly connected to the inner cavities of the first ball seat 203 and the second ball seat 205, respectively. The screws 212 can fix the position of the pressure plate 211, so that the pressure plate 211 can be stably attached to the surfaces of the first ball head 209 and the second ball head 210, and prevent the first ball head 209 and the second ball head 210 from shaking during use.

[0027] Reference Figure 4 The inner cavity of the movable groove 214 is provided with a positioning groove 215. A positioning rod 216 is slidably connected to the inner cavity of the positioning groove 215. One side of the positioning rod 216 is fixedly connected to the surface of the pressure plate 211. Through the setting of the positioning groove 215, the surface of the positioning rod 216 can enter the interior of the first ball seat 203 and the second ball seat 205. Thus, during the movement of the pressure plate 211, the movement of the pressure plate 211 can be guided, so that the pressure plate 211 can be stably attached to the interior of the movable groove 214, avoiding the position of the pressure plate 211 from shifting and affecting the positioning effect of the first ball head 209 and the second ball head 210.

[0028] Reference Figure 2 , Figure 3 and Figure 4 The inner cavities of the first ball seat 203 and the second ball seat 205 are each provided with a fixing groove 213. An O-ring 217 is installed in the inner cavity of the fixing groove 213. The O-ring 217 is made of rubber. The inner cavity of the O-ring 217 is tightly fitted to the surfaces of the first ball head 209 and the second ball head 210, respectively. Through the setting of the fixing groove 213, the O-ring 217 can be installed inside the first ball seat 203 and the second ball seat 205. Thus, during the rotation of the first ball head 209 and the second ball head 210, the O-ring 217 ensures the sealing effect of the first ball head 209 and the second ball head 210 inside the first ball seat 203 and the second ball seat 205.

[0029] Reference Figure 1 and Figure 2 Each of the first oil pipe joint 201, the first connecting oil pipe 202, the second connecting oil pipe 204, and the third connecting oil pipe 206 is fixedly connected with a sealing ring 208. There are four sealing rings 208 in total. The left side of one sealing ring 208 is attached to the right side of the first ball seat 203, and the left side of another sealing ring 208 is attached to the right side of the second ball seat 205. The sealing rings 208 reinforce and seal the connection between the first oil pipe joint 201, the first connecting oil pipe 202, the second connecting oil pipe 204, and the third connecting oil pipe 206, preventing leakage during use.

[0030] Reference Figure 1The surfaces of the first oil port connector 1, the second oil port connector 3, the first oil pipe connector 201, and the second oil pipe connector 207 are all fixedly connected to flanges 4. The inner cavity of the flanges 4 is threaded with fixing bolts. The flanges 4 facilitate the installation and disassembly of the first oil port connector 1 and the first oil pipe connector 201, as well as the second oil port connector 3 and the second oil pipe connector 207, thereby facilitating individual disassembly and maintenance.

[0031] Working principle: First, the first oil pipe joint 201 is fixed to the top of the first oil port joint 1 by bolts inserted into the interior of two flanges 4. Simultaneously, the first oil pipe joint 201, the first connecting oil pipe 202, and the first ball head 209 are welded together to form the first oil pipe assembly. The first ball seat 203, the second connecting oil pipe 204, and the second ball head 210 are welded together to form the second oil pipe assembly. The second ball seat 205, the third connecting oil pipe 206, and the second oil pipe joint 207 are welded together to form the third oil pipe assembly. Sealing rings 208 are fixedly connected at each weld joint. The sealing ring 208 reinforces and seals the weld joint, preventing leakage. After the first oil pipe joint 201 is fixed, rotating the first connecting oil pipe 202 adjusts the angle of the first ball head 209 inside the first ball seat 203, thus changing the angle of the first ball seat 203. After the first ball head 209 is in place, moving one of the pressure plates 211 into the movable groove 214 fixes the position of the first ball head 209, preventing it from moving again after adjustment. By inserting screws 212 into the interiors of pressure plate 211 and first ball seat 203 respectively, the position of one of the pressure plates 211 is fixed, preventing one of the pressure plates 211 from detaching from the movable groove 214 and affecting the fixing effect on the first ball head 209. After the angle of the first ball seat 203 is adjusted, the second connecting oil pipe 204 is rotated. The rotation of the second connecting oil pipe 204 drives the second ball head 210 to rotate inside the second ball seat 205, thereby changing the angle of the second ball seat 205. After the second ball head 210 is adjusted, the other pressure plate 211 is moved to fit against it. The surface of the second ball head 210 can be used to fix the position of the second ball head 210. After adjusting the angle of the second ball seat 205, the bottom of the second oil pipe connector 207 can be completely attached to the top of the second oil port connector 3 for connection. This changes the connection between the first oil port connector 1 and the second oil port connector 3 from a rigid connection to a flexible connection, making it easier to completely fit the sealing plane and thus ensuring the sealing function. If the distance between the first oil port connector 1 and the second oil port connector 3 increases in the future, multiple second oil pipe combinations can be added in the middle for connection, which can ensure the sealed connection between the first oil port connector 1 and the second oil port connector 3.

[0032] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A flexible connection structure for high-pressure oil pipes in a hydraulic system, comprising a first oil port connector (1) and a second oil port connector (3), characterized in that: The top of the first oil port connector (1) and the second oil port connector (3) are both equipped with a connecting mechanism (2); The connecting mechanism (2) includes a first oil pipe joint (201), the bottom of which is connected to the top of the first oil port joint (1), a first connecting oil pipe (202) connected to the right side of the first oil pipe joint (201), a first ball head (209) fixedly connected to the right side of the first connecting oil pipe (202), a first ball seat (203) rotatably connected to the surface of the first ball head (209), a second connecting oil pipe (204) connected to the right side of the first ball seat (203), a second ball head (210) fixedly connected to the right side of the second connecting oil pipe (204), a second ball seat (205) rotatably connected to the surface of the second ball head (210), a third connecting oil pipe (206) connected to the right side of the second ball seat (205), a second oil pipe joint (207) connected to the right side of the third connecting oil pipe (206), and the bottom of the second oil pipe joint (207) connected to the top of the second oil port joint (3).

2. The flexible connection structure for high-pressure oil pipes in a hydraulic system according to claim 1, characterized in that: The inner cavities of the first ball seat (203) and the second ball seat (205) are provided with movable grooves (214), and the inner cavity of the movable groove (214) is movably connected to a pressure plate (211). One side of the pressure plate (211) is tightly fitted to the surface of the first ball head (209) and the second ball head (210).

3. The flexible connection structure for high-pressure oil pipes in a hydraulic system according to claim 2, characterized in that: The inner cavity of the pressure plate (211) is threaded with a screw (212), and the surface of the screw (212) is threaded with the inner cavity of the first ball seat (203) and the second ball seat (205) respectively.

4. The flexible connection structure for high-pressure oil pipes in a hydraulic system according to claim 2, characterized in that: The inner cavity of the movable groove (214) is provided with a positioning groove (215), and a positioning rod (216) is slidably connected to the inner cavity of the positioning groove (215). One side of the positioning rod (216) is fixedly connected to the surface of the pressure plate (211).

5. The flexible connection structure for high-pressure oil pipes in a hydraulic system according to claim 1, characterized in that: The inner cavities of the first ball seat (203) and the second ball seat (205) are provided with fixing grooves (213), and O-rings (217) are installed in the inner cavities of the fixing grooves (213). The inner cavities of the O-rings (217) are tightly fitted to the surfaces of the first ball head (209) and the second ball head (210).

6. The flexible connection structure for high-pressure oil pipes in a hydraulic system according to claim 1, characterized in that: The first oil pipe joint (201), the first connecting oil pipe (202), the second connecting oil pipe (204) and the third connecting oil pipe (206) are all fixedly connected with sealing rings (208). There are four sealing rings (208). The left side of one of the sealing rings (208) is in contact with the right side of the first ball seat (203), and the left side of another sealing ring (208) is in contact with the right side of the second ball seat (205).

7. The flexible connection structure for high-pressure oil pipes in a hydraulic system according to claim 1, characterized in that: The surfaces of the first oil port connector (1), the second oil port connector (3), the first oil pipe connector (201), and the second oil pipe connector (207) are all fixedly connected with flanges (4), and the inner cavity of the flanges (4) is threaded with fixing bolts.

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