A maintenance device for the rotary joint of a discharge arm

Abstract

This solution provides a maintenance device for the rotary joint of a discharge arm. The rotary joint is first fixed on a fixed frame, and then after the ball plug is removed, the balls are removed one by one, and then the rotary joint is moved to the disassembly frame. The inner ring of the rotary joint is pressurized by a driving device, so that the inner and outer rings of the rotary joint and the inner and outer rings of the track are gradually removed to complete the complete disassembly of the rotary joint. Of course, the fixed frame or the disassembly frame can also assemble the disassembled rotary joint. By providing a fixed frame and a disassembly frame, a fixed position for disassembling the balls in the rotary joint and a disassembly position for separating the inner and outer rings of the rotary joint are provided respectively, so that the safe disassembly, maintenance and rapid reinstallation of the rotary joint of the discharge arm can be conveniently and quickly realized. Since the driving device applies pressure to the rotary joint evenly, the risk of damage to the equipment body and the sealing surface is avoided, the reliability during the maintenance process is improved, and the work efficiency is greatly improved.

Description

Technical Field

[0001] The invention belongs to the technical field of discharge arm rotary joints, and in particular relates to a maintenance device for a discharge arm rotary joint. Background Art

[0002] When the unloading arm in the LNG receiving station reaches the end of its operating cycle, the swivel joint on the arm needs to be inspected and repaired. When the swivel joint is worn and the raceway is stretched and deformed, conventional maintenance methods, such as using cross pullers and chain hoisting, not only fail to complete the maintenance of the swivel joint normally, but also easily damage the body and sealing surface of the swivel joint.

[0003] Therefore, how to provide a maintenance device for the unloading arm swivel joint, which can conveniently and quickly realize the safe disassembly, maintenance and rapid reinstallation of the unloading arm swivel joint, is a problem that needs to be solved urgently by technical personnel in this field. Summary of the invention

[0004] The object of the present invention is to provide a maintenance device for a swivel joint of a discharge arm, which can conveniently and quickly realize safe disassembly, maintenance and rapid reinstallation of the swivel joint of the discharge arm.

[0005] In order to solve the above technical problems, the present invention provides a maintenance device for a discharge arm rotary joint, comprising:

[0006] A support body for supporting;

[0007] A fixing frame and a disassembly frame are respectively arranged on both sides of the bracket body, the fixing frame is used to fix the rotary joint when removing the ball, and the disassembly frame is used to provide connection support when separating the inner ring of the rotary joint and the outer ring of the rotary joint;

[0008] A driving device disposed on the disassembly frame;

[0009] Wherein, the disassembly frame is connected to the outer ring of the rotary joint, and the piston rod of the driving device is used to squeeze the inner ring of the rotary joint.

[0010] Preferably, in the above-mentioned unloading arm rotary joint maintenance device, it also includes a hanging frame arranged on the top of the bracket body, and a connecting mechanism for installing a hand hoist or an electric hoist is arranged on the hanging frame.

[0011] Preferably, in the above-mentioned unloading arm swivel joint maintenance device, the connecting mechanism is a lifting ring or a supporting rail.

[0012] Preferably, in the above-mentioned unloading arm rotary joint maintenance device, the driving device is a hydraulic cylinder or a gas cylinder.

[0013] Preferably, in the above-mentioned unloading arm swivel joint maintenance device, the disassembly frame is a sleeve with a flange at one end and the other end connected to the bracket body, and the flange is provided with bolt holes corresponding to the outer ring of the swivel joint and is connected to the outer ring of the swivel joint by a screw.

[0014] Preferably, in the above-mentioned unloading arm rotary joint maintenance device, the driving device is arranged on the inner ring of the flange.

[0015] Preferably, in the above-mentioned unloading arm swivel joint maintenance device, the fixing frame is a transverse bracket with a flange at one end and the other end connected to the bracket body, and the flange is provided with bolt holes corresponding to the inner ring of the swivel joint and is connected to the inner ring of the swivel joint by bolts.

[0016] Preferably, in the above-mentioned unloading arm rotary joint maintenance device, the bracket body includes a base and a column vertically arranged on the base, and the fixing frame and the disassembly frame are provided on the column.

[0017] This solution provides a maintenance device for the rotary joint of a discharge arm. The rotary joint is first fixed on a fixed frame, and then after the ball plug is removed, the balls are removed one by one, and then the rotary joint is moved to the disassembly frame. The inner ring of the rotary joint is pressurized by a driving device, so that the inner and outer rings of the rotary joint and the inner and outer rings of the track are gradually removed to complete the complete disassembly of the rotary joint. Of course, the fixed frame or the disassembly frame can also assemble the disassembled rotary joint. By providing a fixed frame and a disassembly frame, a fixed position for disassembling the balls in the rotary joint and a disassembly position for separating the inner and outer rings of the rotary joint are provided respectively, so that the safe disassembly, maintenance and rapid reinstallation of the rotary joint of the discharge arm can be conveniently and quickly realized. Since the driving device applies pressure to the rotary joint evenly, the risk of damage to the equipment body and the sealing surface is avoided, the reliability during the maintenance process is improved, and the work efficiency is greatly improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0019] Figure 1 Schematic diagram of the installation of the unloading arm swivel joint maintenance device and swivel joint provided for this solution.

[0020] In the above picture:

[0021] Disassembly frame 1; fixed frame 2; driving device 3; rotating joint 4; hanging frame 5; lifting ring 6; screw rod 7; column 8; base 9. DETAILED DESCRIPTION

[0022] The core of the present invention is to provide a maintenance device for a discharge arm rotary joint, which can conveniently and quickly realize safe disassembly, maintenance and rapid reinstallation of the discharge arm rotary joint.

[0023] In order to enable those skilled in the art to better understand the technical solution provided by the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0024] Please refer to Figure 1 The present invention provides a maintenance device for a swivel joint of a discharge arm, comprising a support body, a fixing frame 2, a disassembly frame 1 and a driving device 3. The support body supports other mechanisms on the maintenance device. The fixing frame 2 and the disassembly frame 1 are respectively arranged on both sides of the support body. The fixing frame 2 is used to fix the swivel joint 4 when removing the ball bearing, and the disassembly frame 1 is used to provide connection support when separating the inner ring of the swivel joint and the outer ring of the swivel joint. The driving device 3 is arranged on the disassembly frame 1.

[0025] The disassembly frame 1 is connected to the outer ring of the rotary joint, and the piston rod of the driving device 3 is used to squeeze the inner ring of the rotary joint. The driving device 3 is used to evenly apply force to the rotary joint.

[0026] It should be noted that the rotary joint 4 includes a rotary joint inner ring, a rotary joint outer ring, a track inner ring, balls and track outer ring arranged from the inside to the outside between the rotary joint inner ring and the outer ring, and a ball plug on the rotary joint outer ring. A number of bolt holes are provided on the end faces of the rotary joint inner ring and the rotary joint outer ring. When dismantling, first fix the rotary joint 4 on the fixing frame 2, then remove the ball plugs, remove the balls one by one, and then move the rotary joint to the disassembly frame 1, and apply pressure to the rotary joint inner ring through the driving device, so as to gradually remove the inner and outer rings of the rotary joint and the inner and outer rings of the track, and complete the complete disassembly of the rotary joint. Of course, the fixing frame 2 or the disassembly frame 1 can also assemble the disassembled rotary joint 4.

[0027] Since the inner and outer rings of the swivel joint track of the process pipeline of the discharge arm are stretched and deformed, it is difficult to disassemble. According to the external dimensions and structural characteristics of the swivel joint, this solution provides a swivel joint maintenance device for the discharge arm. By providing a fixing frame 2 and a disassembly frame 1, a fixing position for disassembling the ball inside the swivel joint 4 and a disassembly position for separating the inner and outer rings of the swivel joint 4 are provided respectively, thereby conveniently and quickly realizing the safe disassembly, maintenance and rapid reinstallation of the swivel joint of the discharge arm. Since the driving device 3 applies uniform pressure to the swivel joint, the risk of damage to the equipment body and the sealing surface is avoided, the reliability during the maintenance process is improved, and the work efficiency is greatly improved.

[0028] The present solution further comprises a hanging frame 5 arranged on the top of the bracket body, and a connecting mechanism for installing a hand chain hoist or an electric hoist is arranged on the hanging frame 5. When the balls and the raceway are seriously worn, the outer ring of the rotary joint can be rotated by the hand chain hoist or the electric hoist to remove the balls of the rotary joint one by one.

[0029] It can be seen that the driving device 3 applies uniform force to the end face of the rotary joint, and the hand chain hoist or electric hoist on the lifting frame 5 applies uniform radial force to the rotary joint, ensuring uniform radial and horizontal force when disassembling the rotary joint, protecting the sealing surface of the rotary joint body from damage, and greatly shortening the maintenance time.

[0030] Furthermore, the connection mechanism is a lifting ring 6 or a supporting rail, which provides a mounting position for a hand chain hoist or an electric hoist. Figure 1 As shown, there are multiple lifting rings 6, which are evenly arranged on both sides of the fixing frame and the disassembly frame.

[0031] In a specific implementation, the driving device 3 is a hydraulic cylinder or a gas cylinder, specifically a hydraulic jack.

[0032] In a specific embodiment, the disassembly frame 1 is a sleeve with a first flange at one end and the other end connected to the bracket body, the first flange is provided with bolt holes corresponding to the outer ring of the rotary joint and is connected to the outer ring of the rotary joint through a screw 7. The driving device 3 is arranged on the inner ring of the first flange.

[0033] In a specific embodiment, the fixing frame 2 is a transverse bracket with a second flange at one end and the other end connected to the bracket body. The second flange is provided with bolt holes corresponding to the inner ring of the rotary joint and is connected to the inner ring of the rotary joint by bolts.

[0034] The unloading arm swivel joint maintenance device of this solution innovatively solves the problem of disassembly and maintenance of the unloading arm swivel joint. Through a special maintenance device, the disassembly of the swivel joint is completed in a distributed manner. The operation is simple, convenient and time-saving, and the work efficiency is improved.

[0035] The principles and implementation methods of the present invention are described in this article using specific examples. The description of the above embodiments is only used to help understand the method and core ideas of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made to the present invention without departing from the principles of the present invention, and these improvements and modifications also fall within the scope of protection of the claims of the present invention.

Claims

1. A maintenance device for a discharge arm rotary joint, characterized in that: include: A support body for supporting; A fixing frame (2) and a disassembly frame (1) are respectively arranged on both sides of the bracket body, the fixing frame (2) is used to fix the rotary joint (4) when removing the ball bearing, and the disassembly frame (1) is used to provide connection support when separating the inner ring of the rotary joint and the outer ring of the rotary joint; A driving device (3) disposed on the disassembly frame (1); Wherein, the disassembly frame (1) is connected to the outer ring of the rotary joint, and the piston rod of the driving device (3) is used to squeeze the inner ring of the rotary joint; It also includes a hanging frame (5) arranged on the top of the bracket body, and a connecting mechanism for installing a hand chain hoist or an electric hoist is arranged on the hanging frame (5); The driving device (3) is a hydraulic cylinder or a gas cylinder.

2. The unloading arm rotary joint maintenance device according to claim 1, characterized in that: The connection mechanism is a lifting ring (6) or a supporting rail.

3. The unloading arm rotary joint maintenance device according to claim 1, characterized in that: The disassembly frame (1) is a sleeve with a flange at one end and the other end connected to the bracket body. The flange is provided with bolt holes corresponding to the outer ring of the rotary joint and is connected to the outer ring of the rotary joint via a screw (7).

4. The unloading arm rotary joint maintenance device according to claim 3, characterized in that: The driving device (3) is arranged on the inner ring of the flange.

5. The unloading arm rotary joint maintenance device according to claim 1, characterized in that: The fixing frame (2) is a transverse bracket with a flange at one end and the other end connected to the bracket body; the flange is provided with bolt holes corresponding to the inner ring of the rotating joint and is connected to the inner ring of the rotating joint by bolts.

6. The unloading arm rotary joint maintenance device according to claim 1, characterized in that: The support body comprises a base (9) and a column (8) vertically arranged on the base (9), and the fixing frame (2) and the disassembly frame (1) are arranged on the column (8).

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