CN113443599B

CN113443599B - Special loading crane pipe

Info

Publication number: CN113443599B
Application number: CN202110814689.1A
Authority: CN
Inventors: 陈普宽; 邱跃; 赵华苏; 李�根
Original assignee: Lianyungang Tianbang Technology Development Co ltd
Current assignee: Lianyungang Tianbang Technology Development Co ltd
Priority date: 2021-07-19
Filing date: 2021-07-19
Publication date: 2022-09-09
Anticipated expiration: 2041-07-19
Also published as: CN113443599A

Abstract

The invention discloses a special loading crane pipe, which belongs to the technical field of fluid loading and unloading equipment and comprises a compensation connector, an inner arm pipe, an outer arm pipe, a blowing connector, a rotary joint, a valve, a vertical pipe connecting piece, a vertical pipe driving cylinder, an outward extending telescopic pipe, an inner fixed pipe and three sealing devices, wherein the inner arm pipe is connected with the blowing connector through the vertical pipe driving cylinder; the compensation connector, the inner arm pipe, the outer arm pipe and the valve are fixedly connected through the rotary joints, the lower portion of the valve is fixedly connected with the vertical pipe connecting piece, the vertical pipe connecting piece is fixedly connected with the inner fixing pipe, the outer portion of the inner fixing pipe is provided with the outward extending telescopic pipe, three sealing devices are arranged between the inner fixing pipe and the outward extending telescopic pipe, the two sides of the outward extending telescopic pipe are fixedly provided with vertical pipe driving cylinders, and the outward extending telescopic pipe is movably connected with the inner fixing pipe through the vertical pipe driving cylinders in an up-and-down driving mode. The crane pipe with the structural design of the invention realizes complete sealing by three sealing devices while being telescopic, solves the technical problem of leakage of the pipe arm caused by poor sealing of the telescopic vertical pipe in the loading process of liquid, and is mainly applied to the aspect of liquid loading.

Description

Special loading crane pipe

Technical Field

The invention belongs to the technical field of fluid loading and unloading equipment, and particularly relates to a special loading crane pipe.

Background

Patent application No.: CN201320093458.7 discloses a flexible pipe that hangs down of loading arm, including the outer tube of fixed setting on the oil filling riser body liquid outlet, the activity is worn to be equipped with bottom end confined inner tube in the outer tube, is close to the bottom on the inner tube arm and is equipped with at least one liquid hole, still includes the mount of establishing in oil filling riser body liquid outlet department, is equipped with the extension spring on the mount, and the other end and the inner tube bottom of extension spring are connected, and the pulling force of extension spring is greater than the gravity of inner tube. The utility model provides an automatic flexible pipe that hangs down of convenient to use, not fragile loading oil filling riser. The telescopic vertical pipe has the advantages that the telescopic vertical pipe cannot be conveniently and quickly stretched due to insufficient impact force during liquid input, the telescopic vertical pipe cannot be conveniently and quickly retracted and pulled out when the liquid input stops, a liquid outlet is small, the loading time is long, the working efficiency is low, two simple sealing rings are used in the telescopic vertical pipe, the telescopic vertical pipe is generally used for static sealing, the sealing performance is poor in the telescopic process of the vertical pipe, and liquid leakage and pipeline residue are easily caused.

Patent application No.: CN 201821440586.3 discloses a pneumatic seal of land is with flexible pipe that hangs down of oil filling riser, including fixed outer tube that sets up on oil filling riser body liquid outlet, establish mount and the hoop frame in oil filling riser body liquid outlet department, the bottom of hoop frame is equipped with the sealing ring, and the inner tube is worn to be equipped with in the inner chamber activity of outer tube, is equipped with the extension spring on the mount, and the extension spring links to each other with the inner tube bottom, and outer tube outside circumference is provided with the cylinder, and the bottom of cylinder is provided with the shank. The utility model has the advantages of reasonable design, realize that the automation of inner tube stretches out, realize hanging down the automatic withdrawal and the automatic submerged truck of pipe, it is more firm to connect, and flexible volume is bigger, long service life, and the use is nimble, and the practicality is strong. However, the patent of the prior art has the following defects that when the telescopic vertical pipe is loaded, the telescopic vertical pipe cannot be conveniently and rapidly stretched into and pulled out by using the tension spring, the tension spring needs to be regularly maintained, overhauled and replaced after being used for a long time, even under the assistance of the tension spring cylinder, the operation intensity of personnel still needs to be about 100N, the operation intensity is high, the above patent adopts the upward and downward corresponding contact of the inward flange and the outward flange to realize the anti-falling of the telescopic vertical pipe, no sealing is needed, and the vertical pipe is very easy to leak liquid and residual in the telescopic process.

The crane pipe is a telescopic movable pipe, is called as a crane pipe because the shape is similar to that of a crane, and is mainly used for loading and unloading liquid in a petroleum and chemical wharf and conveying and loading and unloading liquid such as oil, water and the like in a pipe.

At present, liquid delivery is mainly carried out by tank cars represented by automobiles and trains, and pipeline countries related to the loading process of the tank cars have strict relevant standards; the general metal hose or composite hose is difficult to satisfy the use requirements due to the material, the inner surface roughness and the like, and compared with the hose, the general crane tube can meet the requirements in the aspects of the material, the inner surface roughness and the like, but the complicated operation and the higher labor operation intensity are accompanied, and troubles are brought to a user unit.

The pipeline of the common oil filling riser is more in residue, and in order to avoid blowing the vertical pipe of the common oil filling riser under the liquid level, the outer arm of the oil filling riser is always in an upward state for blowing, so that the blowing effect is greatly reduced, and the residual medium can generate microorganisms such as mildew and the like harmful to health due to air oxidation to pollute materials. Therefore, a special loading crane pipe is designed to solve the problems of the prior art.

Disclosure of Invention

The invention aims to provide a special loading crane pipe to solve the problems in the background technology. In order to achieve the purpose, the invention provides the following technical scheme:

A special loading crane pipe comprises a compensation connector, an inner arm pipe, a rotary joint I, a rotary joint II, a rotary joint III, an outer arm pipe, a purging interface, a valve, a vertical pipe connecting piece, a longitudinal trolley, an inner fixing plate, a transverse trolley, an installation chassis, a vertical pipe driving cylinder I, a vertical pipe driving cylinder II, a fixing plate, a longitudinal driving cylinder, a longitudinal extension frame, a longitudinal slide rail, a transverse driving cylinder, a transverse extension frame, a transverse slide rail, an outer extension pipe connector, an inner fixing pipe and a dry quick connector; the compensation connector is fixedly arranged on the second rotary joint, an inner arm pipe is fixedly arranged between the second rotary joint and the first rotary joint, an outer arm pipe is fixedly arranged between the first rotary joint and the third rotary joint, a purging interface is fixedly arranged on the outer arm pipe, in order to prevent liquid in the telescopic vertical pipe from remaining, after loading is finished, pipeline purging is carried out through the purging interface, the upper portion of the third rotary joint is fixedly connected with a right-side pipe orifice of the outer arm pipe, the lower portion of the third rotary joint is fixedly connected with the upper portion of a valve, the lower portion of the valve is fixedly connected with the upper portion of a vertical pipe connecting piece, the lower portion of the vertical pipe connecting piece is fixedly connected with an upper pipe orifice of an inner fixed pipe, an outer telescopic pipe connecting piece is fixedly arranged at an upper pipe orifice of the outer telescopic pipe, a first vertical pipe driving cylinder and a second vertical pipe driving cylinder are fixedly arranged on two sides of the outer telescopic pipe respectively, and the first vertical pipe driving cylinder and the lower portion of the vertical pipe driving cylinder are fixedly connected on the outer arm of the outer telescopic pipe through a fixing plate, the vertical pipe driving cylinder drives the outer telescopic pipe to lift up and down through up-and-down driving, and a dry-type quick connector is arranged at the bottom of the outer telescopic pipe and used for sealing a lower pipe opening of the outer telescopic pipe and preventing pipeline pollution caused by contact with air; the inner arm of the connector with the outer telescopic pipe is provided with a first sealing device to realize first sealing; a second sealing device and a third sealing device are sequentially arranged between the outer side of the inner fixed pipe and the inner side of the outer telescopic pipe from top to bottom, the second sealing device and the third sealing device are fixedly arranged on the outer arm of the inner fixed pipe, the third sealing device is fixedly arranged at the lower pipe opening of the inner fixed pipe to realize second sealing and third sealing, and the inner fixed pipe and the outer telescopic pipe stretch and realize three sealing to prevent liquid leakage; the two sides of the short side of the mounting chassis are respectively fixedly provided with a transverse slide rail, the transverse slide rail is provided with a movable transverse trolley, the two sides of the long side of the transverse trolley are respectively fixedly provided with a longitudinal slide rail, and the longitudinal slide rail is provided with a movable longitudinal trolley; the upper part of the vertical pipe driving cylinder I, the upper part of the vertical pipe driving cylinder II and the upper pipe orifice of the inner fixed pipe are fixedly connected with an inner fixed plate on the longitudinal trolley, the lower part of the vertical pipe driving cylinder I, the lower part of the vertical pipe driving cylinder II and the lower pipe orifice of the inner fixed pipe sequentially penetrate through the transverse trolley and the mounting chassis, the transverse driving cylinder is fixedly arranged on a transverse extending frame, the front end of the transverse driving cylinder is fixedly connected with the transverse trolley, the longitudinal driving cylinder is fixedly arranged on the longitudinal extending frame, and the front end of the longitudinal driving cylinder is fixedly connected with the longitudinal trolley; the transverse driving cylinder drives the transverse trolley to slide on the transverse sliding rail of the mounting base plate, and the longitudinal driving cylinder drives the longitudinal trolley to slide on the sliding rail of the transverse trolley, so that the function of easily aligning when loading is realized.

Preferably: in order to ensure the safety and the sanitation of the loading of the food-grade liquid, the loading crane pipe is made of food-grade materials meeting the national standard.

Preferably: in order to improve the working efficiency, a plurality of telescopic vertical pipes can be arranged on the longitudinal trolley to work simultaneously.

Preferably: in order to enable the telescopic vertical pipe to be capable of freely moving and aligning, the longitudinal trolley, the transverse trolley and the mounting chassis are all rectangular frames.

Preferably: in order to make the liquid flow more naturally and smoothly, the inner arm pipe and the outer arm pipe are arranged from top to bottom through the rotary joint.

Preferably: in order to prevent the leakage of the pipe arm caused by poor sealing when the telescopic vertical pipe is telescopic, the first sealing device comprises a packing press ring, a sealing packing and a packing gasket; a packing gasket is arranged between the inner arm of the outer telescopic pipe connector and the outer arm of the inner fixing pipe, sealing packing is fixedly arranged on the packing gasket, a packing compression ring is fixedly arranged on the sealing packing, and the outer arm of the packing compression ring is closely attached and fixed with the upper part of the outer telescopic pipe connector to realize first sealing; the sealing device II comprises an inner retaining ring, a guide ring I, a lip-shaped sealing ring I, a guide ring II and a positioning ring I; the inner blocking ring and the positioning ring I are fixedly arranged on the outer arm of the inner fixed pipe, a first guide ring and a second guide ring are fixedly arranged between the inner blocking ring and the first positioning ring, a first lip-type seal is fixedly arranged between the first guide ring and the second guide ring, and the inner blocking ring and the positioning ring I are used for limiting the first guide ring, the second guide ring and the first lip-type seal at specific positions of the outer arm of the inner fixed pipe to realize a second seal; the sealing device III comprises a second positioning ring, a third guide ring, a second lip-shaped seal, a fourth guide ring and a third positioning ring; the second positioning ring and the third positioning ring are fixedly arranged on the outer arm of the inner fixed pipe, the third guide ring and the fourth guide ring are fixedly arranged between the second positioning ring and the third positioning ring, the second lip-shaped seal is fixedly arranged between the third guide ring and the fourth guide ring, and the second positioning ring and the third positioning ring are used for limiting the third guide ring, the fourth guide ring and the second lip-shaped seal at the lower pipe opening of the outer arm of the inner fixed pipe to realize third sealing; the inner fixed pipe and the outer telescopic pipe are driven to stretch and retract and are completely sealed by three sealing devices; when the outer telescopic pipe extends into the tank car, the skew does not occur, a plurality of guide rings are fixedly arranged in the second sealing device and the third sealing device, and when the outer telescopic pipe extends into the tank car, the rigid collision with the tank bottom is avoided, an inner baffle ring is fixedly arranged in the second sealing device, and when the outer telescopic pipe extends into the tank car, the sealing device descends to the inner baffle ring of the second sealing device, and the extension is stopped.

Preferably: in order to realize the complete sealing of the telescopic crane pipe, the second sealing device and the third sealing device use lip seals; the lip-shaped sealing element has high sealing efficiency under high pressure or low pressure, has certain compensation effect on abrasion, and cannot cause quick leakage. Lip seals are generally limited to reciprocating use; the lip seal (self-sealing self-tightening seal) is to use the counterforce generated by the self-deformation of the seal ring to perform initial sealing, and to open the seal lip edge to make the seal lip edge tightly contact with the surface of the coupling part under the action of medium pressure, thereby achieving the self-sealing effect.

The invention has the following advantages: the invention relates to a special loading crane pipe which is made of food-grade materials and can safely reach the standard, and particularly can be used for loading food-grade liquid of edible oil and chemical liquid, and the crane pipe can be stretched and sealed completely; the driving cylinder is adopted to drive the oil filling riser to stretch, so that the labor intensity of workers is reduced, a plurality of oil filling risers work simultaneously, the working efficiency is greatly improved, the structural design is simple and reasonable, and the operation is flexible and convenient; the evaluation is good after the use of the user unit.

Drawings

FIG. 1 is a front view of the present invention;

FIG. 2 is a cross-sectional view of a telescoping seal drop tube of the present invention;

FIG. 3 is an enlarged view of a portion of the first sealing device of the present invention at A;

FIG. 4 is an enlarged view of a portion of a second sealing device of the present invention at B;

FIG. 5 is an enlarged view of a portion of a third seal of the present invention at C;

FIG. 6 is a cross-sectional view showing a state in which the telescopic vertical pipe of the present invention is used in a sealed state.

Fig. 7 is a plan view of the present invention in use.

In the figure, a compensating connector 1, an inner arm pipe 2, a rotary joint I3, a rotary joint II 3-1, a rotary joint III 3-2, an outer arm pipe 4, a purging interface 4-1, a valve 5, a vertical pipe connecting piece 6, a longitudinal trolley 7, an inner fixed plate 7-1, a transverse trolley 8, a mounting chassis 9, a vertical pipe driving cylinder I10, a vertical pipe driving cylinder II 10-1, a fixed plate 10-2, a longitudinal driving cylinder 11, a longitudinal extension frame 11-1, a longitudinal slide rail 12, a transverse driving cylinder 13-1, a transverse extension frame 14, a transverse slide rail 15, an outer extension pipe 16, an inner fixed pipe 17, a packing press ring 18, a packing gasket 19, an inner baffle ring 20-1, a guide ring I21 lip type sealing I21, a guide ring II 20-2, a positioning ring I20-3, a positioning ring I21-1 and a positioning ring II 21-1, 22 guide ring III, 21-2 lip type sealing ring II, 22-1 guide ring IV, 23 positioning ring III, 24 outer expansion pipe connector and 25 dry type quick connector.

Detailed Description

The present invention will be further described with reference to the following examples.

The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention. The conditions in the embodiments may be further adjusted according to specific conditions, and simple modifications of the method of the present invention based on the concept of the present invention are all within the scope of the present invention as claimed.

Example 1

As shown in fig. 1-6:

a special loading crane pipe comprises a compensation connector 1, an inner arm pipe 2, a first rotary joint 3, a second rotary joint 3-1, a third rotary joint 3-2, an outer arm pipe 4, a purging connector 4-1, a valve 5, a vertical pipe connecting piece 6, a longitudinal trolley 7, an inner fixing plate 7-1, a transverse trolley 8, an installation chassis 9, a first vertical pipe driving cylinder 10, a second vertical pipe driving cylinder 10-1, a fixing plate 10-2, a longitudinal driving cylinder 11, a longitudinal extension frame 11-1, a longitudinal sliding rail 12, a transverse driving cylinder 13, a transverse extension frame 13-1, a transverse sliding rail 14, a telescopic pipe 15, an outer telescopic pipe connector 24, an inner fixing pipe 16 and a dry type quick connector 25; the compensation connector 1 is fixedly arranged on the second rotary joint 3-1, an inner arm pipe 2 is fixedly arranged between the second rotary joint 3-1 and the first rotary joint 3, an outer arm pipe 4 is fixedly arranged between the first rotary joint 3 and the third rotary joint 3-2, a purging interface 4-1 is fixedly arranged on the outer arm pipe 4, the upper part of the third rotary joint 3-2 is fixedly connected with the right side pipe orifice of the outer arm pipe 4, the inner arm pipe 2 and the outer arm pipe 4 are arranged from top to bottom through the rotary joints to enable liquid to flow into the telescopic vertical pipe more naturally and smoothly, the lower part of the third rotary joint 3-2 is fixedly connected with the upper part of a valve 5, the lower part of the valve 5 is fixedly connected with the upper part of a vertical pipe connecting piece 6, the lower part of the vertical pipe connecting piece 6 is fixedly connected with the upper pipe orifice of an inner fixed pipe 16, and a telescopic pipe connector 24 is fixedly arranged at the upper pipe orifice of an outer telescopic pipe 15, a vertical pipe driving cylinder I10 and a vertical pipe driving cylinder II 10-1 are fixedly arranged on two sides of the outer telescopic pipe 15 respectively, the lower parts of the vertical pipe driving cylinder I10 and the vertical pipe driving cylinder II 10-1 are fixedly connected to the outer telescopic pipe 15 through a fixing plate 10-2, a dry type quick connector 25 is arranged at the bottom of the outer telescopic pipe 15, a first sealing device is arranged on an inner arm of a connector 24 of the outer telescopic pipe, and the first sealing device comprises a packing compression ring 17, a sealing packing 18 and a packing gasket 19; a packing gasket 19 is arranged between the inner arm of the outer telescopic pipe connector 24 and the outer arm of the inner fixing pipe 16, a sealing packing 18 is fixedly arranged on the packing gasket 19, a packing press ring 17 is fixedly arranged on the sealing packing 18, and the outer arm of the packing press ring 17 is closely attached and fixed with the upper part of the outer telescopic pipe connector 24; the second sealing device and the third sealing device are fixedly arranged on the outer arm of the inner fixed pipe 16 to realize first sealing; a second sealing device and a third sealing device are sequentially arranged between the outer side of the inner fixed pipe 16 and the inner side of the outer telescopic pipe 15 from top to bottom, the second sealing device and the third sealing device are fixedly arranged on the outer arm of the inner fixed pipe 16, and the third sealing device is fixedly arranged at the lower pipe opening of the inner fixed pipe 16; the second sealing device comprises an inner baffle ring 20, a first guide ring 20-1, a first lip-shaped seal 21, a second guide ring 20-2 and a first positioning ring 20-3; the inner retaining ring 20 and the first positioning ring 20-3 are fixedly arranged on the outer arm of the inner fixing pipe 16, a first guide ring 20-1 and a second guide ring 20-2 are fixedly arranged between the inner retaining ring 20 and the first positioning ring 20-3, a first lip-shaped seal 21 is fixedly arranged between the first guide ring 20-1 and the second guide ring 20-2, and the inner retaining ring 20 and the first positioning ring 20-3 are used for limiting the first guide ring 20-1, the second guide ring 20-2 and the first lip-shaped seal 21 at a specific position of the outer arm of the inner fixing pipe 16 to realize a second seal; the third sealing device comprises a second positioning ring 21-1, a third guide ring 22, a second lip-shaped sealing ring 21-2, a fourth guide ring 22-1 and a third positioning ring 23; the second positioning ring 21-1 and the third positioning ring 23 are fixedly arranged on the outer arm of the inner fixing tube 16, a third guide ring 22 and a fourth guide ring 22-1 are fixedly arranged between the second positioning ring 21-1 and the third positioning ring 23, and a second lip-shaped seal 21-2 is fixedly arranged between the third guide ring 22 and the fourth guide ring 22-1; the second positioning ring 21-1 and the third positioning ring 23 are used for limiting the third guide ring 22, the fourth guide ring 22-1 and the second lip-shaped seal 21-2 at the lower pipe opening of the outer arm of the inner fixing pipe 16 to realize a third seal; the inner fixed pipe 16 and the outer telescopic pipe 15 are driven to stretch and retract, and complete sealing is realized through three sealing devices; in order to ensure that the outward telescopic pipe 15 does not incline when extending into the tank truck, a plurality of guide rings are fixedly arranged in the second sealing device and the third sealing device, in order to ensure that the outward telescopic pipe 15 does not rigidly collide with the tank bottom when extending into the tank truck, an inner baffle ring 20 is fixedly arranged in the second sealing device, and when the outward telescopic pipe 15 extends into the tank truck, the sealing device descends to the inner baffle ring 20 of the second sealing device and stops extending. The upper part of the vertical pipe driving cylinder I10, the upper part of the vertical pipe driving cylinder II 10-1 and the upper pipe orifice of the inner fixed pipe 16 are fixedly connected with an inner fixed plate 7-1 on the longitudinal trolley 7, the lower part of the vertical pipe driving cylinder I10, the lower part of the vertical pipe driving cylinder II 10-1 and the lower pipe orifice of the inner fixed pipe 16 sequentially penetrate through the transverse trolley 8 and the mounting chassis 9, and the longitudinal trolley 7, the transverse trolley 8 and the mounting chassis 9 are all rectangular frames; the two sides of the short side of the mounting chassis 9 are respectively fixedly provided with a transverse slide rail 14, the transverse slide rail 14 is provided with a movable transverse trolley 8, the two sides of the long side of the transverse trolley 8 are respectively fixedly provided with a longitudinal slide rail 12, and the longitudinal slide rail 12 is provided with a movable longitudinal trolley 7; the transverse driving cylinder 13 is fixedly arranged on the transverse extending frame 13-1, the front end of the transverse driving cylinder 13 is fixedly connected with the transverse trolley 8, the longitudinal driving cylinder 11 is fixedly arranged on the longitudinal extending frame 11-1, and the front end of the longitudinal driving cylinder 11 is fixedly connected with the longitudinal trolley 7; the transverse driving cylinder 13 drives the transverse trolley 8 to slide on a transverse slide rail 14 of the mounting base plate 9, and the longitudinal driving cylinder 11 drives the longitudinal trolley 7 to slide on a slide rail of the transverse trolley 8, so that the function of easily aligning during loading is realized.

The working principle of the invention is as follows:

when the loading arm is used for loading, the transverse driving cylinder 13 drives the transverse trolley 8 to slide on the mounting chassis 9 to enable the loading arm to be adjusted to be aligned with the tank wagon mouth, the longitudinal driving cylinder 11 pushes the longitudinal trolley 7 to slide on the transverse trolley 8 to adjust the loading arm to be aligned with the tank wagon mouth, and the inner arm pipe 2 and the outer arm pipe 4 are rotated and adjusted along with the alignment of the loading arm and the tank wagon mouth; after the oil filling riser is aligned, starting the first vertical pipe driving cylinder 10 and the second vertical pipe driving cylinder 10-1, driving the outer expansion pipe 15 to extend into the tank car, and the outer expansion pipe 15 extends into the second sealing device, wherein the inner baffle ring 20 is arranged in the second sealing device, so that the outer expansion pipe 15 reaches a limited position when extending into the tank car and does not extend into the tank car, and at the moment, the sealing device descends to the second sealing device position to be attached to the two sealing device positions; because a plurality of guide rings and positioning rings are arranged between the inner fixing pipe 16 and the outer telescopic pipe 15, the outer telescopic pipe 15 can straightly extend into the limited position of the tank car, the left and right shaking can not be caused, and the telescopic crane pipe can be prevented from colliding when extending to the bottom of the car. At this time, the valve 5 on the vertical pipe connecting piece 6 is opened, the edible oil is input into the inner arm pipe 2 and the outer arm pipe 4 through the compensating connector 1, flows to the inner fixed pipe 16 and the outer telescopic pipe 15 through the valve 5 and enters the tank wagon, because three sealing devices are arranged between the inner fixed pipe 16 and the outer telescopic pipe 15 for complete sealing, oil leakage can not occur, and the telescopic overlapped section of the inner fixed pipe 16 and the outer telescopic pipe 15 can not be gradually reduced into the pipe arm between the inner fixed pipe 16 and the outer telescopic pipe 15 due to large oil output during oil transportation, after the loading is finished, the valve 5 is closed, the first vertical pipe driving cylinder 10 and the second vertical pipe driving cylinder 10-1 drive the outer telescopic pipe 15 to retract to the tank wagon opening, but not completely retract to the outside of the tank wagon opening, purging is carried out through the purging interface 4-1, the residual edible oil on the pipe wall is purged into the tank wagon, and the outer telescopic pipe 15 retracts completely outside the tank wagon opening, and (4) finishing loading the edible oil, and finally sealing the bottom pipe orifice of the outer telescopic pipe 15 by using a dry type quick connector 25. In order to improve the working efficiency, a plurality of telescopic loading arms can be arranged on the longitudinal trolley 7 to work simultaneously. The invention has simple operation, saves resources, reduces the labor intensity of workers and is suitable for comprehensive popularization and application.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A special loading crane pipe comprises a compensation connector (1), an inner arm pipe (2), a first rotary joint (3), a second rotary joint (3-1), a third rotary joint (3-2), an outer arm pipe (4), a purging connector (4-1), a valve (5), a vertical pipe connector (6), a longitudinal trolley (7), an inner fixing plate (7-1), a transverse trolley (8), an installation chassis (9), a first vertical pipe driving cylinder (10), a second vertical pipe driving cylinder (10-1), a fixing plate (10-2), a longitudinal driving cylinder (11), a longitudinal extension frame (11-1), a longitudinal sliding rail (12), a transverse driving cylinder (13), a transverse extension frame (13-1), a transverse sliding rail (14), a shrinking pipe (15), an outer shrinking pipe connector (24), an inner fixing pipe (16), A dry quick connector (25); the compensation connector (1) is fixedly arranged on the second rotary joint (3-1), an inner arm pipe (2) is fixedly arranged between the second rotary joint (3-1) and the first rotary joint (3), an outer arm pipe (4) is fixedly arranged between the first rotary joint (3) and the third rotary joint (3-2), a purging interface (4-1) is fixedly arranged on the outer arm pipe (4), the upper part of the third rotary joint (3-2) is fixedly connected with a right side pipe orifice of the outer arm pipe (4), the lower part of the third rotary joint (3-2) is fixedly connected with the upper part of the valve (5), the lower part of the valve (5) is fixedly connected with the upper part of the vertical pipe connecting piece (6), and the lower part of the vertical pipe connecting piece (6) is fixedly connected with an upper pipe orifice of the inner fixed pipe (16), and is characterized in that a telescopic pipe connector (24) is fixedly arranged at the upper pipe orifice of the telescopic pipe (15), a vertical pipe driving cylinder I (10) and a vertical pipe driving cylinder II (10-1) are fixedly arranged on two sides of the outer telescopic pipe (15) respectively, the lower parts of the vertical pipe driving cylinder I (10) and the vertical pipe driving cylinder II (10-1) are fixedly connected to the outer telescopic pipe (15) through a fixing plate (10-2), a dry-type quick joint (25) is arranged at the bottom of the outer telescopic pipe (15), a sealing device I is arranged on an inner arm of a connector (24) of the outer telescopic pipe, a sealing device II and a sealing device III are sequentially arranged between the outer side of the inner fixed pipe (16) and the inner side of the outer telescopic pipe (15) from top to bottom, the sealing device II and the sealing device III are fixedly arranged on an outer arm of the inner fixed pipe (16), and the sealing device III is fixedly arranged at a lower pipe at an opening of the inner fixed pipe (16); the two sides of the short side of the mounting chassis (9) are respectively fixedly provided with a transverse slide rail (14), the transverse slide rail (14) is provided with a movable transverse trolley (8), the two sides of the long side of the transverse trolley (8) are respectively fixedly provided with a longitudinal slide rail (12), and the longitudinal slide rail (12) is provided with a movable longitudinal trolley (7); the upper part of the vertical pipe driving cylinder I (10), the upper part of the vertical pipe driving cylinder II (10-1) and the upper pipe opening of the inner fixed pipe (16) are fixedly connected with an inner fixed plate (7-1) on the longitudinal trolley (7), and the lower part of the vertical pipe driving cylinder I (10), the lower part of the vertical pipe driving cylinder II (10-1) and the lower pipe opening of the inner fixed pipe (16) sequentially penetrate through the transverse trolley (8) and the mounting chassis (9); the transverse driving cylinder (13) is fixedly arranged on the transverse extending frame (13-1), the front end of the transverse driving cylinder (13) is fixedly connected with the transverse trolley (8), the longitudinal driving cylinder (11) is fixedly arranged on the longitudinal extending frame (11-1), and the front end of the longitudinal driving cylinder (11) is fixedly connected with the longitudinal trolley (7);

The inner arm pipe (2) and the outer arm pipe (4) are arranged from top to bottom through a rotary joint;

the longitudinal trolley (7), the transverse trolley (8) and the mounting chassis (9) are all rectangular frames;

the device comprises a compensation connector (1), an inner arm pipe (2), a rotary joint I (3), a rotary joint II (3-1), a rotary joint III (3-2), an outer arm pipe (4), a purging connector (4-1), a valve (5), a vertical pipe connecting piece (6), an outer telescopic pipe (15), an outer telescopic pipe connecting head (24), an inner fixed pipe (16) and a dry-type quick connector (25), wherein the compensation connector (1), the inner arm pipe (2), the rotary joint I (3), the rotary joint II (3-1), the outer arm pipe (4), the purging connector (4-1), the valve (5), the vertical pipe connecting piece (6), the outer telescopic pipe (15), the outer telescopic pipe connecting head (24), the inner fixed pipe (16) and the dry-type quick connector (25) are all made of food-grade materials meeting national standards;

the first sealing device comprises a packing press ring (17), a sealing packing (18) and a packing gasket (19); a packing gasket (19) is arranged between the inner arm of the outer telescopic pipe connector (24) and the outer arm of the inner fixing pipe (16), a sealing filler (18) is fixedly arranged on the packing gasket (19), a packing press ring (17) is fixedly arranged on the sealing filler (18), and the outer arm of the packing press ring (17) is closely attached and fixed with the upper part of the outer telescopic pipe connector (24);

the sealing device II comprises an inner baffle ring (20), a guide ring I (20-1), a lip-shaped sealing I (21), a guide ring II (20-2) and a positioning ring I (20-3); the inner retaining ring (20) and the first positioning ring (20-3) are fixedly arranged on the outer arm of the inner fixing pipe (16), a first guide ring (20-1) and a second guide ring (20-2) are fixedly arranged between the inner retaining ring (20) and the first positioning ring (20-3), and a first lip-shaped seal ring (21) is fixedly arranged between the first guide ring (20-1) and the second guide ring (20-2);

The sealing device III comprises a second positioning ring (21-1), a third guide ring (22), a second lip-shaped seal (21-2), a fourth guide ring (22-1) and a third positioning ring (23); the second positioning ring (21-1) and the third positioning ring (23) are fixedly arranged on the outer arm of the inner fixing tube (16), a third guide ring (22) and a fourth guide ring (22-1) are fixedly arranged between the second positioning ring (21-1) and the third positioning ring (23), and a second lip-shaped seal ring (21-2) is fixedly arranged between the third guide ring (22) and the fourth guide ring (22-1).