A new hydraulic joint connection structure

Abstract

The present invention relates to the technical field of hydraulic connectors, and specifically relates to a new type of hydraulic connector connection structure, which includes a fuselage. A hydraulic pipe is arranged below the fuselage, and a hydraulic connector is arranged between adjacent hydraulic pipes. A pipe fixing mechanism for fixing and aligning the hydraulic pipes and the hydraulic connector is arranged on the fuselage. The tools used in the connection steps are integrated through the fuselage, and the existing connection steps are streamlined, further improving the connection efficiency. At the same time, the adaptability of the hydraulic connector and the pipeline is improved. When installing the other end of the hydraulic connector and the pipe orifice, only the hydraulic connector is rotated, avoiding directly rotating the pipe orifice and the hydraulic connector after connection, thereby avoiding the occurrence of tooth rubbing caused by the large friction between the two, which affects the sealing performance of the hydraulic pipeline, and avoiding the problem of leakage or loose connection of the installed hydraulic pipeline caused by impurities or foreign objects existing between the hydraulic connector and the pipeline.

Description

Technical Field

[0001] The invention relates to the technical field of hydraulic joints, in particular to a novel hydraulic joint connection structure. Background Art

[0002] The hydraulic pipeline is a system used to transmit hydraulic power. It consists of a hydraulic pump, a control valve, a hydraulic pipe and connectors. It is mainly used to control the flow of liquid in the system to achieve force transmission, position control and energy conversion. The hydraulic connector is a connector used to connect the hydraulic pipeline. Therefore, in order to ensure the normal operation and high efficiency of the hydraulic pipeline, the hydraulic connector needs to be connected to the hydraulic pipe to improve the sealing and hydraulic transmission capacity of the hydraulic pipeline after the hydraulic connector is assembled.

[0003] The current hydraulic joint connection steps are to carefully check the appearance of the hydraulic joint before testing to ensure that there is no serious damage or corrosion, then ensure that the prepared hydraulic pipe cut is flat and smooth, then wipe the paint, dirt or impurities on the connecting part of the joint and the hydraulic pipe with a cloth, then insert the hydraulic joint into the hydraulic pipe and rotate the connection according to the joint type, then use the correct size wrench to tighten the joint, and finally use a pressure gauge or leak detection equipment to perform a leak test to ensure that there is no leakage at the connection. Although the current hydraulic joint connection method is more operational, it still has the following disadvantages:

[0004] 1. In the process of connecting the hydraulic joint to the hydraulic pipe, a large number of tools are needed to complete the connection. Therefore, workers need to constantly change the tools used during the connection, which will reduce the connection efficiency and place high requirements on the adaptation of the installation tools.

[0005] 2. When cleaning the pipe mouth and hydraulic joints, only use a cloth to wipe the joints of the hydraulic pipes. Some stubborn stains cannot be cleaned. Therefore, impurities or foreign matter between the hydraulic joints and the hydraulic pipes will cause leakage or loose connections in the installed hydraulic pipelines.

[0006] 3. After the worker completes the connection between one end of the pipe and the hydraulic joint, when rotating and tightening the other end of the hydraulic joint, the pipe on that end needs to be rotated forcefully. Therefore, there will be a strong friction at the connection between the connected pipe and the hydraulic joint, resulting in the thread between the connected pipe and the hydraulic joint being rubbed, thereby affecting the sealing of the hydraulic pipeline.

[0007] Therefore, in order to ensure the sealing performance and hydraulic transmission capacity of the hydraulic pipeline after the hydraulic joint is assembled, the present invention provides a novel hydraulic joint connection structure. Summary of the invention

[0008] To solve the above technical problems, the present invention provides a new hydraulic joint connection structure, which is achieved by the following specific technical means:

[0009] A new hydraulic joint connection structure includes a fuselage. A hydraulic pipe is arranged below the fuselage. A hydraulic joint is arranged between adjacent hydraulic pipes. A pipe fixing mechanism for fixing and aligning the hydraulic pipe and the hydraulic joint is arranged on the fuselage.

[0010] The pipe fixing mechanism includes a main body part arranged on the fuselage. A fixing part is arranged on the lower end face of the main body part.

[0011] A joint fixing mechanism for fixing the hydraulic joint is slidably installed on the main body part.

[0012] The joint fixing mechanism includes a rotation limiting part slidably installed on the main body part. A fitting part is rotatably installed on the lower end face of the rotation limiting part.

[0013] A pipe cleaning mechanism for cleaning the inner wall of the hydraulic pipe is slidably installed on the main body part.

[0014] The pipe cleaning mechanism includes a moving part slidably installed on the main body part and between the joint fixing mechanism and the fuselage. A scraping part is fixedly installed in the moving part.

[0015] As a preferred technical solution of the present invention, the main body part includes a bearing round rod, a bearing sliding frame, a first magnetic attraction piece and a fitting semi-circular plate. The front end face of the fuselage is fixedly installed with the bearing round rod, and a number of limiting strips are fixedly installed on the bearing round rod in a circumferential array manner. Rotation grooves are opened in the middle sections of the number of limiting strips. The lower end face of the fuselage is rotatably installed with the bearing sliding frame. The lower end face of the bearing sliding frame is slidably installed with the fitting semi-circular plates symmetrically left and right. The lower end face of the fuselage is fixedly installed with the first magnetic attraction piece, and the bearing sliding frame is fixedly installed with the first magnetic attraction piece. The bearing sliding frame is attached to the lower end face of the fuselage through the first magnetic attraction piece.

[0016] As a preferred technical solution of the present invention, the fixing part includes a second magnetic attraction piece, a spring telescopic rod and a rolling ball. The upper and lower ends of the mutually approaching side walls of the symmetrical fitting semi-circular plates are fixedly installed with the second magnetic attraction pieces. The symmetrical fitting semi-circular plates are attached to each other through the second magnetic attraction pieces. A number of spring telescopic rods are fixedly installed in the symmetrical fitting semi-circular plates in a circumferential array manner, and the telescopic ends of the spring telescopic rods all penetrate through the fitting semi-circular plates. Rolling balls are rotatably installed on the mutually approaching side walls of the telescopic ends of the spring telescopic rods.

[0017] As a preferred technical solution of the present invention, the rotation limiting part includes a first slider, a ratchet tooth, a rotating cylinder and a ratchet pawl. The first slider is slidably connected to the bearing round rod through a provided limiting strip. A circle of ratchet teeth is provided at the center of the lower end surface of the first slider. A rotating cylinder is rotatably installed on the lower end surface of the first slider. A ratchet pawl is fixedly installed on the inner wall of the rotating cylinder, and the ratchet pawl is in contact with the ratchet teeth.

[0018] As a preferred technical solution of the present invention, the fitting part includes a circular ring sleeve, an annular hydraulic pipe, an input end, a threaded hydraulic rod and a clamping plate. The circular ring sleeve is fixedly installed on the lower end surface of the rotating cylinder. The annular hydraulic pipe is fixedly installed inside the circular ring sleeve. A plurality of output ends are fixedly installed on the side wall close to the center point of the annular hydraulic pipe in a circumferential array manner. The right end of the annular hydraulic pipe is provided with an input end, and the input end penetrates through the circular ring sleeve. A threaded hydraulic rod is threadedly connected inside the input end. A piston rod is slidably installed inside each of the plurality of output ends, and a clamping plate is fixedly installed on the side wall where the piston rods are close to each other.

[0019] As a preferred technical solution of the present invention, the moving part includes a second slider, a cam plate and a central column. The second slider is slidably connected to the bearing round rod behind the first slider through a provided limiting strip. The cam plate is fixedly installed on the lower end surface of the second slider, and a sewage discharge hole is provided on the side of the cam plate away from the second slider. The central column is fixedly installed through support rods fixedly installed in a circumferential array at the center of the sewage discharge hole.

[0020] As a preferred technical solution of the present invention, the scraping part includes a first spring rod, a second spring rod and a scraping net. A plurality of first spring rods arranged front and back are fixedly installed on the central column in a circumferential array manner. A plurality of second spring rods are fixedly installed on the rear end surface of the central column in a circumferential array manner. A scraping net is fixedly installed on the side walls of a plurality of the first spring rods and the second spring rods away from the central column, and the front end of the scraping net is fixedly connected to the cam plate. Grooves arranged front and back are provided on the scraping net in a circumferential array manner, and a sponge layer is covered on the side wall of the scraping net away from the central column.

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] 1. For this new hydraulic joint connection structure, through the mutual cooperation of the pipe fixing mechanism, the fixing connection mechanism and the pipe cleaning mechanism set, the tools used in the connection steps are integrated by the fuselage, and the existing connection steps are streamlined, so that workers can complete the operation at one time without changing tools, further improving the connection efficiency, and at the same time improving the adaptability between the hydraulic joint and the hydraulic pipe.

[0023] 2. For this new hydraulic joint connection structure, through the combined use of the pipe fixing mechanism and the fixing mechanism, when installing the other end of the hydraulic joint and the pipe orifice, only rotate the hydraulic joint, avoiding directly rotating the pipe orifice and the hydraulic joint after they are connected, thereby avoiding the occurrence of tooth rubbing caused by the large friction between the two, which affects the sealing performance of the hydraulic pipeline.

[0024] 3. For this new hydraulic joint connection structure, through the combined use of the pipe fixing mechanism and the pipe cleaning mechanism, the operations of wiping and applying lubricating oil are completed by using the scraping net, and the scraping net can fit more closely to the inner wall of the hydraulic pipe, so as to clean the stubborn stains at the connection of the hydraulic pipe during the rotation process, thus avoiding the existence of impurities or foreign objects between the hydraulic joint and the hydraulic pipe, which may cause problems such as leakage or loose connection of the installed hydraulic pipeline. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a three-dimensional structural schematic diagram of the body of the present invention when cleaning the pipe.

[0026] Figure 2 It is a three-dimensional structural schematic diagram of the body of the present invention when installing a hydraulic joint.

[0027] Figure 3 It is a three-dimensional structural schematic diagram of the main body part of the present invention.

[0028] Figure 4 It is Figure 3 the enlarged structural schematic diagram at A in

[0029] Figure 5 It is a three-dimensional structural schematic diagram of the pipe fixing mechanism of the present invention.

[0030] Figure 6 It is a sectional three-dimensional structural schematic diagram of the pipe cleaning mechanism of the present invention.

[0031] Figure 7 It is a sectional three-dimensional structural schematic diagram of the body of the present invention when cleaning the pipe.

[0032] Figure 8 It is a three-dimensional structural schematic diagram of the fixing mechanism of the present invention.

[0033] Figure 9 It is a three-dimensional structural schematic diagram of the rotating part of the present invention.

[0034] In the figure: 1, fuselage; 2, hydraulic joint; 3, hydraulic pipe; 4, pipe fixing mechanism; 41, main body part; 411, load-bearing round rod; 412, load-bearing carriage; 413, first magnetic sheet; 414, fitting semi-circular plate; 42, fixing part; 421, second magnetic sheet; 422, spring telescopic rod; 423, rolling ball; 5, fixing mechanism; 51, rotation limiting part; 511, first slider; 512, ratchet tooth; 513, rotating cylinder; 514, ratchet pawl; 52, fitting part; 521, circular ring sleeve; 522, annular hydraulic pipe; 523, input end; 524, threaded hydraulic rod; 525, clamping plate; 6, pipe cleaning mechanism; 61, moving part; 611, second slider; 612, cam plate; 613, central column; 62, scraping part; 621, first spring rod; 622, second spring rod; 623, scraping net. Detailed implementation mode

[0035] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0036] Please refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 , a new type of hydraulic joint connection structure, including a fuselage 1, a hydraulic pipe 3 is arranged below the fuselage 1, a hydraulic joint 2 is arranged between adjacent hydraulic pipes 3, and a pipe fixing mechanism 4 for fixing and aligning the hydraulic pipe 3 and the hydraulic joint 2 is arranged on the fuselage 1.

[0037] The pipe fixing mechanism 4 includes a main body part 41 arranged on the fuselage 1, and a fixing part 42 is arranged on the lower end surface of the main body part 41.

[0038] Please refer to Figure 8 and Figure 9 , a fixing mechanism 5 for fixing the hydraulic joint 2 is slidably installed on the main body part 41.

[0039] The fixing mechanism 5 includes a rotation limiting part 51 slidably installed on the main body part 41, and a fitting part 52 is rotatably installed on the lower end surface of the rotation limiting part 51.

[0040] Please refer to Figure 6 and Figure 7 , a pipe cleaning mechanism 6 for cleaning the inner wall of the hydraulic pipe 3 is slidably installed on the main body part 41.

[0041] The pigging mechanism 6 includes a moving part 61 slidably mounted on the main body part 41 and between the fixing mechanism 5 and the fuselage 1, and a scraping part 62 is fixedly installed inside the moving part 61.

[0042] Please refer to Figure 3 、 Figure 4 and Figure 5 As shown in, the main body part 41 includes a bearing round rod 411, a bearing carriage 412, a first magnetic sheet 413 and a fitting semi-circular plate 414. The front end face of the fuselage 1 is fixedly installed with a bearing round rod 411, and a number of limiting strips are fixedly installed on the bearing round rod 411 in a circumferential array. Rotating grooves are provided in the middle sections of the number of limiting strips. The lower end face of the fuselage 1 is rotatably installed with a bearing carriage 412. The lower end face of the bearing carriage 412 is slidably installed with fitting semi-circular plates 414 symmetrically left and right. The lower end face of the fuselage 1 is fixedly installed with a first magnetic sheet 413, and the bearing carriage 412 is fixedly installed with a first magnetic sheet 413. The bearing carriage 412 is attached to the lower end face of the fuselage 1 through the first magnetic sheet 413.

[0043] During specific operation, when it is necessary to connect the hydraulic joint 2 and the hydraulic pipe 3, the worker first carefully checks the appearance of the hydraulic joint 2 to ensure that there is no serious damage or corrosion, and then ensures that the cut of the prepared hydraulic pipe 3 is flat and smooth.

[0044] Place the bearing round rod 411 directly above the hydraulic pipe 3, and rotate the bearing carriage 412 so that the fitting semi-circular plate 414 below it is perpendicular to the lower end face of the fuselage 1. At this time, push both fitting semi-circular plates 414 towards the hydraulic pipe 3. When a certain distance is reached between the two fitting semi-circular plates 414, the second magnetic sheet 421 will attract and combine the two fitting semi-circular plates 414 with each other, and fit against the side wall of the hydraulic pipe 3 to fix the position of the fuselage 1.

[0045] After one end of the hydraulic pipe 3 is connected to the hydraulic joint 2, pull the fitting semi-circular plates 414 to both sides and swing the bearing carriage 412 backward. At this time, the bearing carriage 412 is adsorbed under the fuselage 1 under the attraction of the first magnetic sheet 413. At this time, the fitting semi-circular plates 414 are separated from the hydraulic pipe 3. At this time, rotate the bearing round rod 411 with the hydraulic joint 2 as the center point so that the rotated fuselage 1 is directly above the other end of the hydraulic pipe 3, and then the above process can be repeated to complete the installation.

[0046] Please refer to Figure 4 and Figure 5, the fixing part 42 includes a second magnetic attraction piece 421, a spring telescopic rod 422 and a rolling ball 423. Second magnetic attraction pieces 421 are fixedly installed at the upper and lower ends of the mutually approaching side walls of the symmetrically fitting semi-circular plates 414. The symmetrically fitting semi-circular plates 414 are mutually attached through the second magnetic attraction pieces 421. Spring telescopic rods 422 are fixedly installed in the symmetrically fitting semi-circular plates 414 in a circumferential array manner, and the telescopic ends of the spring telescopic rods 422 all penetrate through the fitting semi-circular plates 414. Rolling balls 423 are rotatably installed on the mutually approaching side walls of the telescopic ends of the spring telescopic rods 422.

[0047] During specific operation, since the second magnetic attraction piece 421 attaches the fitting semi-circular plates 414 on both sides to the side wall of the hydraulic pipe 3, at this time, the internal spring telescopic rods 422 will attach the rolling balls 423 to the side wall of the hydraulic pipe 3, so that when the bearing circular rod 411 rotates around the hydraulic pipe 3 as the center, the rolling balls 423 can reduce the friction force and make its rotation smoother.

[0048] Please refer to Figure 8 and Figure 9 , the rotation limiting part 51 includes a first slider 511, a ratchet tooth 512, a rotating cylinder 513 and a ratchet pawl 514. A first slider 511 is slidably connected to the bearing circular rod 411 through a provided limiting strip. A circle of ratchet teeth 512 is formed at the center of the lower end surface of the first slider 511. A rotating cylinder 513 is rotatably installed on the lower end surface of the first slider 511. A ratchet pawl 514 is fixedly installed on the inner wall of the rotating cylinder 513, and the ratchet pawl 514 is in contact with the ratchet teeth 512.

[0049] During specific operation, when the hydraulic pipe fixing mechanism 4 completes the fixing of the hydraulic pipe 3, the first slider 511 is pushed to the foremost end on the bearing circular rod 411 through the limiting strip, and then the circular ring sleeve 521 is rotated counterclockwise to drive the rotating cylinder 513 to rotate below the first slider 511. At this time, the internal ratchet pawl 514 and the ratchet teeth 512 will limit the rotation angle of the circular ring sleeve 521 and the first slider 511. Then the circular ring sleeve 521 can be rotated to a level parallel to the end surface of the fitting semi-circular plate 414, and then the rotation can be stopped.

[0050] Please refer to Figure 8 and Figure 9 , the fitting part 52 includes a circular ring sleeve 521, an annular hydraulic pipe 522, an input end 523, a threaded hydraulic rod 524 and a clamping plate 525. A circular ring sleeve 521 is fixedly installed on the lower end surface of the rotating cylinder 513. An annular hydraulic pipe 522 is fixedly installed inside the circular ring sleeve 521, and a number of output ends are fixedly installed on the side wall of the annular hydraulic pipe 522 close to the center point in a circumferential array manner. An input end 523 is arranged at the right end of the annular hydraulic pipe 522, and the input end 523 penetrates through the circular ring sleeve 521. A threaded hydraulic rod 524 is threadedly connected inside the input end 523. Piston rods are slidably installed inside a number of output ends, and clamping plates 525 are fixedly installed on the mutually approaching side walls of the piston rods.

[0051] During specific operation, after the circular ring sleeve 521 rotates completely, place the hydraulic joint 2 at the inner center of the circular ring sleeve 521. At the same time, rotate the threaded hydraulic rod 524 forward to continuously extend it leftward at the input end 523, so as to provide pressure to the annular hydraulic pipe 522. The pressure will act on the piston rod, causing the piston rod to push out the clamping plate 525 from the output end simultaneously. At this time, the clamping plate 525 will clamp and fix the hydraulic joint 2. Since the circular ring sleeve 521 is parallel to the end face of the fitting semi-arc plate 414, the hydraulic joint 2 and the hydraulic pipe 3 are arranged in mutual alignment at this time, and the alignment of the two is completed.

[0052] After the pigging mechanism 6 completes the lubricating oil and pigging operations, disconnect the pigging mechanism 6 from the hydraulic pipe 3, rotate it 180 degrees on the bearing round rod 411, and then push it to fit against the fuselage 1. At this time, push the hydraulic joint 2 fixed by the first slider 511 and the circular ring sleeve 521 backward. Finally, the first slider 511 presses the second slider 611 against the front end face of the fuselage 1. At this time, the worker can hold the hydraulic pipe 3 with one hand and rotate the bearing round rod 411 with the other hand, so that one end of the hydraulic joint 2 is gradually screwed tightly with the hydraulic pipe 3, and the connection of one end is completed. This avoids directly rotating the connected hydraulic pipe 3 and the hydraulic joint 2, and further avoids the occurrence of tooth rubbing caused by the large friction between the two, which affects the sealing performance of the hydraulic pipeline.

[0053] Please refer to Figure 6 and Figure 7 As shown in, the moving part 61 includes a second slider 611, a cam plate 612 and a central column 613. A second slider 611 is slidably connected to the bearing round rod 411 through a limiting strip provided at the rear side of the first slider 511. A cam plate 612 is fixedly installed on the lower end surface of the second slider 611. A sewage discharge hole is provided on the side of the cam plate 612 away from the second slider 611. A central column 613 is fixedly installed together through support rods fixedly installed in a circumferential array at the center of the sewage discharge hole.

[0054] Please refer to Figure 6 and Figure 7 As shown in, the scraping part 62 includes a first spring rod 621, a second spring rod 622 and a scraping net 623. A number of first spring rods 621 arranged front and back in a circumferential array are fixedly installed on the central column 613. A number of second spring rods 622 are fixedly installed on the rear end face of the central column 613 in a circumferential array. A scraping net 623 is fixedly installed on the side walls of a number of first spring rods 621 and second spring rods 622 away from the central column 613. The front end of the scraping net 623 is fixedly connected to the cam plate 612. Grooves arranged front and back in a circumferential array are provided on the scraping net 623. A sponge layer is covered on the side wall of the scraping net 623 away from the central column 613.

[0055] During specific operation, after the alignment of the hydraulic joint 2 and the hydraulic pipe 3 is completed, first push the second slider 611 to the rotating groove on the bearing round rod 411 through the limiting strip. At this time, rotate the rotating cam plate 612 until the central column 613 just reaches the center point of the connection between the hydraulic pipe 3 and the hydraulic joint 2 and then stop rotating. At this time, the second slider 611 can be pushed backward on the bearing round rod 411, so that the cam plate 612 drives the scraping net 623 into the hydraulic pipe 3.

[0056] Then, similarly, move the first slider 511 to the rotating groove, rotate the hydraulic joint 2 fixed with the ring sleeve 521 by 180 degrees, and then push it to the front end of the bearing round rod 411 again. At this time, the bearing round rod 411 can be rotated around the hydraulic pipe 3. The bearing round rod 411 will drive the second slider 611 to rotate through the limiting strip. During the rotation, the scraping net 623 will scrape the stains on the inner wall of the connection between the hydraulic pipe 3 and the hydraulic joint 2.

[0057] When the scraping net 623 enters the hydraulic pipe 3, the first spring rod 621 and the second spring rod 622 will always press the scraping net 623 against the inner wall of the hydraulic pipe 3. When the moving part 61 rotates, the grooves of the scraping net 623 will scrape and remove stubborn stains, and after scraping, the sponge layer on its outer side will adsorb and take out impurities. After rotating for a period of time, pull out the scraping net 623 from the hydraulic pipe 3, clean its surface, and apply the required lubricating oil on the scraping net 623. Then, similarly, apply the lubricating oil on the scraping net 623 into the hydraulic pipe 3 to avoid problems such as leakage or loose connection in the installed hydraulic pipeline caused by impurities or foreign objects between the hydraulic joint 2 and the hydraulic pipe 3.

[0058] Working principle: When connecting the hydraulic joint 2 and the hydraulic pipe 3, the worker first carefully checks the appearance of the hydraulic joint 2 to ensure there is no serious damage or corrosion, and then ensures that the cut of the prepared hydraulic pipe 3 is flat and smooth.

[0059] The bearing round rod 411 can be placed directly above the hydraulic pipe 3, and rotate the bearing carriage 412 so that the fitting semi-arc plate 414 below it is perpendicular to the lower end surface of the fuselage 1. At this time, push both fitting semi-arc plates 414 towards the hydraulic pipe 3, and when both fitting semi-arc plates 414 are attached to the side wall of the hydraulic pipe 3, the position of the fuselage 1 is fixed.

[0060] Then push the first slider 511 to the front end of the bearing round rod 411, rotate the ring sleeve 521 rotating counterclockwise until it stops rotating when it is parallel to the end surface of the fitting semi-arc plate 414, and then place the hydraulic joint 2 at the center inside the ring sleeve 521, and clamp and fix the hydraulic joint 2 through the fitting part 52.

[0061] Subsequently, through the mutual cooperation of the moving part 61 and the scraping part 62, the scraping net 623 is inserted into the hydraulic pipe 3. Then, the bearing round rod 411 can be rotated around the hydraulic pipe 3. During the rotation process, the scraping net 623 will scrape the stains on the inner wall of the connection between the hydraulic pipe 3 and the hydraulic joint 2. After rotating for a period of time, the scraping net 623 is pulled out of the hydraulic pipe 3, its surface is cleaned, and the required lubricating oil is applied to the scraping net 623. Then, the lubricating oil on the scraping net 623 can be applied into the hydraulic pipe 3 in the same way.

[0062] When the lubricating oil and pipe cleaning operations are completed by using the pipe cleaning mechanism 6, the pipe cleaning mechanism 6 is detached from the hydraulic pipe 3, rotated 180 degrees on the bearing round rod 411, and then pushed to fit against the fuselage 1. At this time, the hydraulic joint 2 fixed with the first slider 511 and the ring sleeve 521 is pushed backward. Finally, the first slider 511 presses the second slider 611 against the front end face of the fuselage 1. At this time, the worker can hold the hydraulic pipe 3 with one hand and rotate the bearing round rod 411 with the other hand, so that one end of the hydraulic joint 2 is gradually screwed tightly with the hydraulic pipe 3, and the connection of one end is completed.

[0063] After one end of the hydraulic pipe 3 is connected to the hydraulic joint 2, the fitting semi-circular plate 414 is pulled apart to both sides, and the bearing carriage 412 is swung backward. At this time, the bearing carriage 412 is attracted by the first magnetic sheet 413 and adsorbed under the fuselage 1. At this time, the fitting semi-circular plate 414 is detached from the hydraulic pipe 3. Then, the bearing round rod 411 is rotated around the hydraulic joint 2 as the center point, so that the rotated fuselage 1 is directly above the other hydraulic pipe 3. Then, the above process can be repeated to complete the installation.

[0064] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A hydraulic joint connection structure, including a fuselage, characterized in that: A hydraulic pipe is arranged below the fuselage, a hydraulic joint is arranged between adjacent hydraulic pipes, and a pipe fixing mechanism for fixing and aligning the hydraulic pipe and the hydraulic joint is arranged on the fuselage; The pipe fixing mechanism includes a main body part arranged on the fuselage, and a fixing part is arranged on the lower end face of the main body part; A fixing mechanism for fixing the hydraulic joint is slidably installed on the main body part; The fixing mechanism includes a rotation limiting part slidably installed on the main body part, and a fitting part for clamping and fixing the hydraulic joint is rotatably installed on the lower end face of the rotation limiting part; A pipe cleaning mechanism for cleaning the inner wall of the hydraulic pipe is slidably installed on the main body part; The pipe cleaning mechanism includes a moving part slidably installed on the main body part and between the fixing mechanism and the fuselage, and a scraping part is fixedly installed inside the moving part; The main body part includes a load-bearing round rod, a load-bearing sliding frame, a first magnetic attraction piece and a fitting semi-circular plate. The load-bearing round rod is fixedly installed on the front end face of the fuselage, and a number of limiting strips are fixedly installed on the load-bearing round rod in a circumferential array. A rotation groove is opened in the middle section of the number of limiting strips. The load-bearing sliding frame is rotatably installed on the lower end face of the fuselage. The fitting semi-circular plates are symmetrically and slidably installed on the lower end face of the load-bearing sliding frame. The first magnetic attraction piece is fixedly installed on the lower end face of the fuselage, and the load-bearing sliding frame is fixedly installed with the first magnetic attraction piece. The load-bearing sliding frame is attached to the lower end face of the fuselage through the first magnetic attraction piece; The fixing part includes a second magnetic attraction piece, a spring telescopic rod and a rolling ball. The second magnetic attraction pieces are fixedly installed at the upper and lower ends of the mutually approaching side walls of the symmetrically fitting semi-circular plates. The symmetrically fitting semi-circular plates are mutually attached through the second magnetic attraction pieces. The spring telescopic rods are fixedly installed in the symmetrically fitting semi-circular plates in a circumferential array, and the telescopic ends of the spring telescopic rods all penetrate through the fitting semi-circular plates. The rolling balls are rotatably installed on the mutually approaching side walls of the telescopic ends of the spring telescopic rods; The rotation limiting part includes a first slider, a ratchet tooth, a rotating cylinder and a ratchet pawl. The first slider is slidably connected to the load-bearing round rod through the arranged limiting strip. A circle of ratchet teeth is opened at the center of the lower end face of the first slider. The rotating cylinder is rotatably installed on the lower end face of the first slider. The ratchet pawl is fixedly installed on the inner wall of the rotating cylinder, and the ratchet pawl is in contact with the ratchet tooth; The moving part includes a second slider and a cam plate. The second slider is slidably connected to the load-bearing round rod behind the first slider through the arranged limiting strip. The cam plate is fixedly installed on the lower end face of the second slider.

2. The hydraulic joint connection structure according to claim 1, characterized in that: The fitting part includes a circular ring sleeve, an annular hydraulic pipe, an input end, a threaded hydraulic rod and a clamping plate. The circular ring sleeve is fixedly installed on the lower end face of the rotating cylinder. The annular hydraulic pipe is fixedly installed inside the circular ring sleeve, and a number of output ends are fixedly installed on the side wall of the annular hydraulic pipe close to the center point in a circumferential array. The input end is arranged at the right end of the annular hydraulic pipe, and the input end penetrates through the circular ring sleeve. The threaded hydraulic rod is threadedly connected inside the input end. The piston rods are slidably installed inside the number of output ends, and the clamping plates are fixedly installed on the mutually approaching side walls of the piston rods.

3. A hydraulic joint connection structure according to claim 1, characterized in that: The moving part further includes a central column. A sewage discharge hole is opened on the side of the cam plate away from the second slider, and the central column is fixedly installed at the center of the sewage discharge hole through the support rods fixedly installed in a circumferential array.

4. A hydraulic joint connection structure according to claim 3, characterized in that: The scraping part includes a first spring rod, a second spring rod and a scraping net. A plurality of first spring rods arranged front and back are fixedly installed on the central column in a circumferential array manner. A plurality of second spring rods are fixedly installed on the rear end face of the central column in a circumferential array manner. A scraping net is fixedly installed on the side walls of a plurality of the first spring rods and the second spring rods away from the central column. The front end of the scraping net is fixedly connected to the cam plate. Grooves arranged front and back are formed in the scraping net in a circumferential array manner. A sponge layer covers the side wall of the scraping net away from the central column.

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