Underwater joint type built-in angle sensor double-helix oscillating cylinder and bridge type oil distribution structure thereof

Abstract

The invention discloses an underwater joint type built-in angle sensor double-helix oscillating cylinder and a bridge type oil distribution structure thereof, and belongs to the technical field of hydraulic cylinders. The piston rod is of a hollow structure and internally provided with an angle sensor. The piston rod is sleeved with the piston and the guide sleeve and then installed in the cylinder body, the thrust bearing is arranged between the piston rod and the cylinder body, the piston rod and the guide sleeve are connected through the gland to form the double-helix swing cylinder, and the double-helix swing cylinder is installed in the middle of the bestriding type installation beam. Two ends of the double-helix oscillating cylinder are provided with rotary joints, rotary mandrels and bridge type oil distributors which are used for distributing oil paths and providing power sources for the double-helix oscillating cylinder and other hydraulic elements; when the bridge type oil distributor rotates, the angle sensor obtains a rotating signal, and a cable at the tail of the angle sensor penetrates through a right-angle watertight socket at the other end of the hollow piston rod to be connected. According to the hydraulic cylinder, the problems of precise output rotation angle, pipeline interference and underwater environment application can be solved, the machining and assembling difficulty of the hydraulic cylinder is reduced, and the production efficiency is improved.

Description

Technical Field

[0001] The invention relates to the technical field of hydraulic cylinders, and in particular to an underwater articulated spiral swing cylinder with a built-in angle sensor and a bridge-type oil distribution structure thereof. Background Art

[0002] Conventional double helix swing cylinders are not designed with seals for underwater applications, and do not have the function of distributing oil lines. In the case of limited space, the rotation of the overall equipment structure often causes interference with the oil supply lines of related components, which is difficult to arrange. Therefore, conventional double helix swing cylinders cannot meet the actual working conditions. Summary of the invention

[0003] In view of this, the present invention provides an underwater articulated double-helix swing cylinder with a built-in angle sensor and a bridge-type oil distribution structure, which can solve the problems of accurate output of rotation angles, pipeline interference, and underwater environment application, reduce the difficulty of processing and assembly of the hydraulic cylinder, improve production efficiency, and further expand the scope of use of the double-helix swing cylinder.

[0004] An underwater articulated double-helix swing cylinder with built-in angle sensor and a bridge-type oil distribution structure thereof, comprising a piston rod, a piston, a guide sleeve, a gland, a bridge-type oil distributor, an angle sensor, a thrust bearing, a cylinder body, a straddle-type mounting beam, a swivel joint and a swivel mandrel;

[0005] The piston rod is a hollow structure and has a built-in angle sensor;

[0006] The piston and the guide sleeve are mounted on the piston rod and then installed in the cylinder body. A thrust bearing is arranged between the piston rod and the cylinder body. The piston rod and the guide sleeve are connected by a pressure cover to form a double-helix swing cylinder. The double-helix swing cylinder is installed in the middle of the straddle-type mounting beam. Rotary joints, rotary mandrels and bridge-type oil distributors are installed at both ends of the double-helix swing cylinder for distributing oil circuits, providing a power source for itself and other hydraulic components. When the bridge-type oil distributor rotates, the angle sensor obtains a rotation signal, and the rear cable of the angle sensor passes through the right-angle watertight socket at the other end of the hollow piston rod and is connected out.

[0007] Furthermore, both end surfaces of the guide sleeve and the piston rod have threaded holes connected to the straddle-type mounting beam. After being fixed on the straddle-type mounting beam, hydraulic oil is respectively input into the two chambers, and the cylinder body outputs a rotation angle and a rotation torque after rotating.

[0008] Furthermore, the right end of the angle sensor sealing structure is provided with a tightening sleeve between the transmission shaft and the right rotating core shaft, an O-ring is provided for sealing between the outer periphery of the tightening sleeve and the right rotating core shaft, and a rotating seal is provided between the inner periphery and the transmission shaft; the left end of the angle sensor sealing structure is provided with O-rings for sealing on the end face and radial direction between the watertight socket and the piston rod; the middle of the angle sensor sealing structure is provided with a sealing sleeve between the piston rod and the right rotating core shaft, and the sealing sleeve, the piston rod and the right rotating core shaft are all sealed with O-rings.

[0009] Furthermore, a connecting seat and a mounting flange are provided on the cylinder body, wherein the connecting seat is used to connect to the bridge-type oil distributor, and the mounting flange is used to connect to other structures.

[0010] Furthermore, the guide sleeve and the piston rod each have two sets of rotating seals facing inside and outside, while the left and right rotating core shafts each have four sets of rotating seals facing inside and outside, which meet the application requirements of sealing the internal oil circuit, doing internal pressure work, and preventing external pressure seawater.

[0011] Beneficial effects:

[0012] 1. The piston rod of the present invention is a hollow structure and has a built-in angle sensor. When the bridge-type oil distributor rotates, the angle sensor obtains a rotation signal. The rear cable of the angle sensor passes through the right-angle watertight socket at the other end of the hollow piston rod and is connected out. The angle sensor can collect real-time rotation signals, so that the rotation angle of the underwater articulated built-in angle sensor spiral swing cylinder and its bridge-type oil distribution structure can be output and high-precision closed-loop control can be performed.

[0013] 2. The present invention is equipped with a swivel joint, a swivel mandrel and a bridge-type oil distributor at both ends of the double-helix swing cylinder for distributing the oil circuit, providing a power source for itself and other hydraulic components; it has an oil distribution function, which can meet the hydraulic oil circuit requirements of other hydraulic components on the joint structure, save the installation space of multiple hydraulic hoses and solve the problem of oil pipe interference, save the procurement cycle and cost of pressure-resistant hydraulic hoses, and extend the service life of the hydraulic circuit system. Finally, due to the above effects, the present invention has good controllability and adaptability to deep-sea environments, and has the characteristics of good economy, simple structure and long service life.

[0014] 3. The right end of the angle sensor sealing structure of the present invention has a tightening sleeve between the transmission shaft and the right rotating core shaft, an O-ring is sealed between the outer periphery of the tightening sleeve and the right rotating core shaft, and a rotating seal is sealed between the inner periphery and the transmission shaft; the left end of the angle sensor sealing structure has O-rings sealed on the end face and radially between the watertight socket and the piston rod; the middle of the angle sensor sealing structure has a sealing sleeve between the piston rod and the right rotating core shaft, and the sealing sleeve, the piston rod and the right rotating core shaft are all sealed with O-rings, so that the sealing of the spiral swing cylinder, its oil distribution structure and the angle sensor can meet the underwater application environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the underwater articulated double-helix swing cylinder with built-in angle sensor and its bridge-type oil distribution structure of the present invention;

[0016] Figure 2 This is an appearance diagram of the underwater articulated double-helix swing cylinder with built-in angle sensor and its bridge-type oil distribution structure of the present invention.

[0017] Among them, 1-left axle oil distributor, 2-watertight socket, 3-left rotary core shaft, 4-left end cover, 5-needle bearing, 6-left rotary joint, 7-piston rod, 8-straddle mounting beam, 9-thrust bearing, 10-cylinder body, 11-piston, 12-guide sleeve, 13-pressure cover, 14-sealing sleeve, 15-right rotary core shaft 16-right rotary joint, 17-angle sensor, 18-right end cover, 19-angle sensor mounting seat, 20-tightening sleeve, 21-drive shaft, 22-right axle oil distributor. DETAILED DESCRIPTION

[0018] The present invention is described in detail below with reference to the accompanying drawings and embodiments.

[0019] As attached Figure 1 and 2 As shown, the present invention provides an underwater articulated double-helix swing cylinder with a built-in angle sensor and a bridge-type oil distribution structure thereof, which comprises a left bridge oil distributor 1, a watertight socket 2, a left rotary core shaft 3, a left end cover 4, a needle bearing 5, a left rotary joint 6, a piston rod 7, a straddle-type mounting beam 8, a thrust bearing 9, a cylinder body 10, a piston 11, a guide sleeve 12, a pressure cover 13, a sealing sleeve 14, a right rotary core shaft 15, a right rotary joint 16, an angle sensor 17, a right end cover 18, an angle sensor mounting seat 19, a tightening sleeve 20, a transmission shaft 21, a right bridge oil distributor 22 and a sealing member. During assembly, first install the piston rod 7, piston 11, and guide sleeve 12 with seals to complete the assembly, then install the thrust bearing 9 on the piston rod 7, then install the piston rod 7 with the above parts into the cylinder body 10, then install the piston 11, and then install the guide sleeve 12, and then use the pressure cover 13 to connect the piston rod 7 and the guide sleeve 12 to complete the assembly of the swing cylinder.

[0020] Next, install the swing cylinder into the straddle-type mounting beam 8, and install the left rotary core shaft 3, the left rotary joint 6, and the left bridge oil distributor 1 on the left end in sequence; then install the sealing sleeve 14, the right rotary core shaft 15, the right rotary joint 16, and the right bridge oil distributor 22 on the right end in sequence.

[0021] The assembly process of the rotation signal acquisition system is as follows: first, connect the transmission shaft 21, the angle sensor mounting seat 19, and the angle sensor 17 together to complete the assembly and install the seal on the adapter sleeve 20; secondly, install the angle sensor mounting seat 19 into the inner hole at the right end of the right rotary core shaft 15; then pass the adapter sleeve 20 through the transmission shaft 21 and align it with the mounting screw position of the angle sensor mounting seat 19 and install it in the inner hole at the right end of the right rotary core shaft 15; then install the right end cover 18 on the right rotary joint 16; then install the seal on the watertight socket 2, and then pass the cable of the angle sensor 17 through the sealing sleeve 14 and the inner hole of the piston rod 7 to connect it with the cable in the watertight socket 2, and then put the excess cable into the inner hole of the piston rod 7, and finally fix the watertight socket 2 to the left end face of the piston rod 7 with bolts.

[0022] The left and right oil distribution structures of the swing cylinder are the same, and the left end is used as an example for explanation: there are four sets of rotating seals on the outer periphery of the left rotary core shaft 3 to seal three groups of oil passages, and the left rotary joint 6 also has three groups of oil passages communicating with the left rotary core shaft 3. The left bridge oil distributor 1 has another three groups of oil passages communicating with the left rotary joint 6, one of which leads to the oil chamber at the left end of the cylinder body 10, and the other two groups lead to hydraulic components on other structures through the oil pipes welded on the left bridge oil distributor 1.

[0023] In the above implementation process, firstly, because there is an angle sensor that can collect real-time rotation signals, the rotation angle of the underwater articulated built-in angle sensor spiral swing cylinder and its bridge-type oil distribution structure can be output and high-precision closed-loop control can be performed. Secondly, there is a sealing structure, so that the sealing of the spiral swing cylinder and its oil distribution structure and the angle sensor can meet the underwater application environment. Furthermore, because it has the oil distribution function, it can meet the hydraulic oil circuit requirements of other hydraulic components on the joint structure, save the installation space of multiple hydraulic hoses and solve the oil pipe interference problem, save the procurement cycle and cost of pressure-resistant hydraulic hoses, and extend the service life of the hydraulic circuit system. Finally, due to the above effects, the present invention has good controllability and adaptability to deep-sea environments, and has the characteristics of good economy, simple structure and long service life.

[0024] In summary, the above are only preferred embodiments of the present invention and are not intended to limit the protection scope of the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. Underwater joint type built-in angle sensor double spiral swing cylinder and its bridge type oil distribution structure, characterized in that: It includes a piston rod, a piston, a guide sleeve, a gland, a bridge oil distributor, an angle sensor, a thrust bearing, a cylinder body, a straddle-type mounting beam, a swivel joint and a swivel mandrel; The piston rod is a hollow structure and has a built-in angle sensor; The piston and the guide sleeve are mounted on the piston rod and then installed in the cylinder body. A thrust bearing is arranged between the piston rod and the cylinder body. The piston rod and the guide sleeve are connected by a pressure cover to form a double-helix swing cylinder. The double-helix swing cylinder is installed in the middle of the straddle-type mounting beam. Rotary joints, rotary mandrels and bridge-type oil distributors are installed at both ends of the double-helix swing cylinder for distributing oil circuits, providing a power source for itself and other hydraulic components. When the bridge-type oil distributor rotates, the angle sensor obtains a rotation signal, and the rear cable of the angle sensor passes through the right-angle watertight socket at the other end of the hollow piston rod and is connected out.

2. The underwater articulated double-helix swing cylinder with built-in angle sensor and its bridge-type oil distribution structure as claimed in claim 1, characterized in that: The guide sleeve and the piston rod both have threaded holes connected to the straddle-type mounting beam at both end surfaces. After being fixed on the straddle-type mounting beam, hydraulic oil is respectively input into the two chambers, and the cylinder body rotates to output a rotation angle and a rotation torque.

3. The underwater articulated double-helix swing cylinder with built-in angle sensor and its bridge-type oil distribution structure as claimed in claim 2, characterized in that: The right end of the angle sensor sealing structure is provided with a tightening sleeve between the transmission shaft and the right rotating core shaft, an O-ring is provided for sealing between the outer periphery of the tightening sleeve and the right rotating core shaft, and a rotating seal is provided for sealing between the inner periphery and the transmission shaft; the left end of the angle sensor sealing structure is provided with O-rings for sealing on the end face and radial direction between the watertight socket and the piston rod; the middle of the angle sensor sealing structure is provided with a sealing sleeve between the piston rod and the right rotating core shaft, and the sealing sleeve, the piston rod and the right rotating core shaft are all sealed with O-rings.

4. The underwater articulated double-helix swing cylinder with built-in angle sensor and its bridge-type oil distribution structure as claimed in claim 3, characterized in that: The cylinder body is provided with a connecting seat and a mounting flange, wherein the connecting seat is used to connect to a bridge-type oil distributor, and the mounting flange is used to connect to other structures.

5. The underwater articulated double-helix swing cylinder with built-in angle sensor and its bridge-type oil distribution structure as claimed in claim 3 or 4, characterized in that: The guide sleeve and the piston rod are both provided with two sets of rotating seals facing inside and outside, while the left and right rotating core shafts are respectively provided with four sets of rotating seals facing inside and outside.

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