Automatic telescopic loading arm

By designing an automatic telescopic loading arm and utilizing a combination of hydraulic rods and telescopic hoses, the problem of the inability to extend pipelines in existing technologies has been solved, enabling flexible loading operations on the top or bottom of tank trucks and improving loading efficiency and applicability.

CN223496192UActive Publication Date: 2025-10-31HEILONGJIANG CHUNHUA QIUSHI GRAIN & OIL CO LTD
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Patent Information

Application Number
CN202422849304.7
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-11-22
Publication Date
2025-10-31
Estimated Expiration
2034-11-22

AI Technical Summary

Technical Problem

Existing fluid loading arms cannot effectively extend the pipeline usage distance and are difficult to achieve flexible loading operations on the top or bottom of tank trucks.

Method used

Design an automatic telescopic loading arm that extends a telescopic hose via a hydraulic rod. Combined with a support plate and a fixing frame, it enables flexible adjustment and directional control of the hose. With the support column and oil inlet pipe, it connects to the oil inlet on the top or bottom of the tanker truck.

Benefits of technology

It enables flexible docking with the top or bottom oil inlets of tank trucks, improving loading efficiency and flexibility, and enhancing the applicability of the loading arm.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model provides an automatic telescopic truck loading arm which comprises a bearing stand column, a truck loading arm assembly is installed on the bearing stand column, an oil inlet pipeline is connected with the bearing stand column through a connecting piece, one end of a telescopic hose is communicated with the oil inlet pipeline, the other end of the telescopic hose is communicated with an installation sleeve, and the installation sleeve is connected with the bearing stand column. The hydraulic rod is fixedly connected with the mounting sleeve, a center hole of the supporting plate is fixedly connected with the mounting sleeve, the output end of the hydraulic rod is fixedly connected with the supporting plate, and the fixing frame is connected with the hydraulic rod through the locking piece. And meanwhile, compared with the use of a metal pipeline in the prior art, the design of the telescopic hose is more flexible, and the use direction of the mounting sleeve can be conveniently adjusted through the telescopic hose.
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Description

Technical Field

[0001] This utility model relates to the field of loading arm technology, and in particular to an automatic telescopic loading arm. Background Technology

[0002] Fluid loading arms, also known as loading arms, are a type of equipment used for conveying fluids such as oil and chemicals. They are widely used in industries such as petroleum, chemical, and food. Their main function is to transport fluids from one location to another through telescopic and rotary motion.

[0003] Among them, fluid loading and unloading arms are usually installed on trestle bridges. In the actual grain and oil tank filling process, the commonly used fluid loading and unloading arms are made of spliced ​​sections of metal pipes. However, hydraulic rods can only control the position of the pipes and cannot extend the distance of the pipes. This makes it inconvenient to complete the top loading or bottom filling of the tank truck. Therefore, we propose an automatic telescopic loading arm. Utility Model Content

[0004] The purpose of this utility model is to provide an automatic telescopic loading arm, which extends the service length of the telescopic hose by means of a hydraulic rod, so as to facilitate the connection between the oil outlet end of the installation sleeve and the oil inlet at the top or bottom of the tank truck.

[0005] This utility model provides an automatic telescopic loading arm, including a support column, on which a loading arm assembly is mounted. The loading arm assembly can connect with the oil inlet at the bottom or top of the tanker truck to allow grain and oil to be introduced into the tanker truck.

[0006] The loading arm assembly includes an oil inlet pipe, a telescopic hose, an installation sleeve, a support plate, a hydraulic rod, a first locking component, a fixing frame, and connecting components;

[0007] The oil inlet pipe is connected to the supporting column through the connector. One end of the telescopic hose is connected to the oil inlet pipe, and the other end of the telescopic hose is connected to the mounting sleeve. The center hole of the support plate is fixedly connected to the mounting sleeve. The output end of the hydraulic rod is fixedly connected to the support plate. The fixing frame is connected to the hydraulic rod through the first locking member. The end of the fixing frame away from the hydraulic rod is fixedly connected to the oil inlet pipe.

[0008] Preferably, the first locking component includes a card holder, a rotating shaft, a limiting plate, a insert plate, and a mounting base;

[0009] The card holder and the tail end of the hydraulic rod are fixedly connected. The card holder is rotatably connected to the fixed frame through the rotating shaft. The center hole of the limiting plate is fixedly connected to the end of the rotating shaft away from the card holder. The insert plate is inserted into the slot of the limiting plate. The mounting base is hinged to the insert plate through a pin. The side of the mounting base away from the insert plate is fixedly connected to the fixed frame.

[0010] Preferably, the connector includes a slide rail, a sliding plate, and a positioning pin;

[0011] The slide rail and the supporting column are fixedly connected, the slide plate and the slide rail are slidably connected, the end of the slide plate away from the supporting column is fixedly connected to the oil inlet pipe, and the slide plate is connected to the slide rail through the positioning pin.

[0012] Preferably, the mounting sleeve is equipped with a conversion element, which is used to change the oil outlet direction of the mounting sleeve;

[0013] The conversion component includes a disc, bolts, a guide tube, and an oil injection tube;

[0014] The disc is inserted into the slot of the mounting sleeve. The disc is connected to the mounting sleeve by bolts. The guide tube passes through the through hole of the disc and extends into the cavity of the mounting sleeve. The guide tube is fixedly connected to the center hole of the disc. The oil injection pipe is connected to the end of the guide tube away from the disc.

[0015] Preferably, the support column is equipped with an adjustment component, which is used to adjust the working height of the support column;

[0016] The adjustment assembly includes a connecting rod, a base, and a second locking component;

[0017] The connecting rod is inserted into the cavity of the supporting column, and the base and the bottom end of the connecting rod are fixedly connected. The second locking member is used to fix the position of the connecting rod.

[0018] Preferably, the second locking element includes a threaded pin, a washer, and a nut;

[0019] One end of the threaded pin is fixedly connected to the connecting rod, and the other end of the threaded pin passes through the groove of the supporting column and is connected to the nut. The washer is located between the nut and the supporting column.

[0020] Preferably, a flange joint is fixedly connected to the bottom end of the oil inlet pipe, and the flange joint is used to connect to the oil pipeline.

[0021] Preferably, the telescopic hose includes metal wires to increase the strength of the telescopic hose.

[0022] Preferably, a rubber tube is installed between the guide tube and the mounting sleeve, the rubber tube being used to increase the sealing between the guide tube and the mounting sleeve.

[0023] Preferably, the slide rail has threaded holes evenly distributed on it, and the diameter of the threaded holes is adapted to the positioning pin.

[0024] This utility model provides an automatic telescopic loading arm with the following improvements and advantages compared with the prior art:

[0025] By using a combination of a support column, an oil inlet pipe, a telescopic hose, an installation sleeve, a support plate, a hydraulic rod, a first locking element, and a fixing frame, the grain and oil enter the telescopic hose through the oil inlet pipe. The grain and oil flow through the telescopic hose and are discharged through the installation sleeve. Activating the hydraulic rod causes the telescopic hose to extend via the support plate, thereby extending the working distance of the installation sleeve. This facilitates the introduction of grain and oil into the oil inlet at the bottom or top of the tanker truck. At the same time, the design of the telescopic hose is more flexible than the use of metal pipes in existing technologies, which is conducive to adjusting the direction of use of the installation sleeve. Attached Figure Description

[0026] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0027] Figure 1 This is a schematic diagram of the structure of this utility model;

[0028] Figure 2 This is a schematic diagram of the slide rail, slide plate, and oil inlet pipe in this utility model;

[0029] Figure 3 This is a schematic diagram of the structure of the mounting sleeve, guide pipe and oil injection pipe in this utility model;

[0030] Figure 4 This is a schematic diagram of the structure of the card holder, rotating shaft, and limiting plate in this utility model;

[0031] Figure 5 This is a schematic diagram of the connecting rod, base, and threaded pin in this utility model.

[0032] Explanation of reference numerals in the attached figures:

[0033] 1-Bearing column, 2-Loading arm assembly, 21-Oil inlet pipe, 211-Flange joint, 22-Telescopic hose, 221-Metal wire, 23-Mounting sleeve, 231-Converter, 231a-Disc, 231b-Bolt, 231c-Guide pipe, 231d-Oil injection pipe, 24-Support plate, 25-Hydraulic rod, 26-First locking element, 261-Card holder, 262-Rotating shaft, 263-Limiting plate, 264-Insert plate, 265-Mounting seat, 27-Fixing bracket, 28-Connector, 281-Slide rail, 282-Slide plate, 283-Positioning pin, 3-Adjusting assembly, 31-Connecting rod, 32-Base, 33-Second locking element, 331-Threaded pin, 332-Washer, 333-Nut. Detailed Implementation

[0034] The technical solution of this utility model will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0035] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0036] In the description of this utility model, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the stated features. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified. Furthermore, the terms "installed," "connected," and "linked" should be interpreted broadly; for example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0037] In this embodiment, as Figure 1 and Figure 2 As shown, an automatic telescopic loading arm includes a support column 1, on which a loading arm assembly 2 is mounted. The loading arm assembly 2 can connect with the oil inlet at the bottom or top of the tanker truck to allow grain and oil to be introduced into the tanker truck. The loading arm assembly 2 includes an oil inlet pipe 21, a telescopic hose 22, an mounting sleeve 23, a support plate 24, a hydraulic rod 25, a first locking element 26, a fixing frame 27, and a connector 28. The oil inlet pipe 21 is connected to the support column 1 through the connector 28. One end of the telescopic hose 22 is connected to the oil inlet pipe 21, and the other end of the telescopic hose 22 is connected to the mounting sleeve 23. The center hole of the support plate 24 is fixedly connected to the mounting sleeve 23. The output end of the hydraulic rod 25 is fixedly connected to the support plate 24. The fixing frame 27 is connected to the hydraulic rod 25 through the first locking element 26, and the end of the fixing frame 27 away from the hydraulic rod 25 is fixedly connected to the oil inlet pipe 21.

[0038] Thus, the grain and oil enter the telescopic hose 22 through the oil inlet pipe 21. The grain and oil flow through the telescopic hose 22 and are discharged through the installation sleeve 23. When it is necessary to inject oil into the tanker truck, the hydraulic rod 25 is activated. The output end of the hydraulic rod 25 drives the telescopic hose 22 to extend through the support plate 24, thereby extending the working distance of the installation sleeve 23, so as to facilitate the introduction of grain and oil into the oil inlet at the bottom or top of the tanker truck. At the same time, the design of the telescopic hose 22 is more flexible than the use of metal pipes in the prior art, which is conducive to adjusting the working direction of the installation sleeve 23.

[0039] Furthermore, the telescopic hose 22 and the oil inlet pipe 21 are arranged vertically, the mounting sleeve 23 is installed at the oil outlet end of the telescopic hose 22, and a cavity is machined in the mounting sleeve 23. The support plate 24 is used to connect the hydraulic rod 25 and the telescopic hose 22, and the fixing bracket 27 is used to install the tail end of the hydraulic rod 25. The extension of the hydraulic rod 25 can drive the telescopic hose 22 to extend.

[0040] In some embodiments, such as Figure 4 As shown, the first locking member 26 includes a card seat 261, a rotating shaft 262, a limiting plate 263, an insert plate 264, and a mounting base 265. The card seat 261 is fixedly connected to the tail end of the hydraulic rod 25. The card seat 261 is rotatably connected to the fixing frame 27 via the rotating shaft 262. The center hole of the limiting plate 263 is fixedly connected to the end of the rotating shaft 262 away from the card seat 261. The insert plate 264 is inserted into the slot of the limiting plate 263. The mounting base 265 is hinged to the insert plate 264 via a pin. The side of the mounting base 265 away from the insert plate 264 is fixedly connected to the fixing frame 27.

[0041] Furthermore, the internal groove in the card holder 261 is adapted to the tail end of the hydraulic rod 25, the rotating shaft 262 rotates in the fixed frame 27 through the bearing, and the limit plate 263 has evenly distributed strip grooves adapted to the insert plate 264. The mounting seat 265 is U-shaped and is inserted into different strip grooves of the limit plate 263 through the insert plate 264 to adjust the tilt angle of the hydraulic rod 25.

[0042] In some embodiments, such as Figure 2 As shown, the connector 28 includes a slide rail 281, a slide plate 282, and a positioning pin 283. The slide rail 281 is fixedly connected to the support column 1, the slide plate 282 is slidably connected to the slide rail 281, the end of the slide plate 282 away from the support column 1 is fixedly connected to the oil inlet pipe 21, and the slide plate 282 is connected to the slide rail 281 through the positioning pin 283.

[0043] Furthermore, there are two slide plates 282. The outer wall of the positioning pin 283 is machined with threads, and the slide plate 282 is machined with a groove that matches the slide rail 281. The slide plate 282 is fixed to different positions on the slide rail 281 by the positioning pin 283.

[0044] In some embodiments, such as Figure 3 As shown, a conversion component 231 is installed in the mounting sleeve 23. The conversion component 231 is used to change the oil outlet direction of the mounting sleeve 23. The conversion component 231 includes a disc 231a, a bolt 231b, a guide tube 231c, and an oil injection tube 231d. The disc 231a is inserted into the slot of the mounting sleeve 23. The disc 231a is connected to the mounting sleeve 23 by the bolt 231b. The guide tube 231c passes through the through hole of the disc 231a and extends into the cavity of the mounting sleeve 23. The guide tube 231c is fixedly connected to the center hole of the disc 231a. The oil injection tube 231d is connected to the end of the guide tube 231c away from the disc 231a.

[0045] Furthermore, the outer periphery of the disc 231a is adapted to the cavity of the mounting sleeve 23, four bolts 231b are provided, and the end of the guide pipe 231c away from the oil injection pipe 231d needs to be inserted into the inner cavity of the mounting sleeve 23 during installation. The oil injection pipe 231d is used to add grain and oil to the tanker truck.

[0046] In some embodiments, such as Figure 1 As shown, an adjustment component 3 is installed in the support column 1. The adjustment component 3 is used to adjust the working height of the support column 1. The adjustment component 3 includes a connecting rod 31, a base 32, and a second locking member 33. The connecting rod 31 is inserted into the cavity of the support column 1. The base 32 and the bottom end of the connecting rod 31 are fixedly connected. The second locking member 33 is used to fix the working position of the connecting rod 31.

[0047] Furthermore, the connecting rod 31 is adapted to the cavity at the bottom of the supporting column 1, and mounting holes are machined at the four corners of the base 32. By adjusting the position of the supporting column 1 on the connecting rod 31, the working height of the supporting column 1 can be changed.

[0048] In some embodiments, such as Figure 5 As shown, the second locking component 33 includes a threaded pin 331, a washer 332, and a nut 333. One end of the threaded pin 331 is fixedly connected to the connecting rod 31, and the other end of the threaded pin 331 passes through the groove of the supporting column 1 and is connected to the nut 333. The washer 332 is located between the nut 333 and the supporting column 1.

[0049] Furthermore, there are two threaded pins 331, which are symmetrically distributed at both ends of the connecting rod 31. The nut 333 is used to fix the position of the threaded pin 331 in the groove of the bearing column 1. The washer 332 is made of rubber material. The design of the washer 332 increases the friction between the nut 333 and the outer wall of the bearing column 1.

[0050] In some embodiments, such as Figure 2 As shown, a flange joint 211 is fixedly connected to the bottom end of the oil inlet pipe 21. The flange joint 211 is used to connect to the oil pipeline.

[0051] Furthermore, the oil inlet pipe 21 and the oil delivery pipe are connected by flange joint 211.

[0052] In some embodiments, such as Figure 1 As shown, the telescopic hose 22 includes a metal wire 221, which is used to increase the strength of the telescopic hose 22.

[0053] Furthermore, the metal wire 221 is made of copper wire, and the design of the metal wire 221 increases the load-bearing capacity of the telescopic hose 22.

[0054] In some embodiments, such as Figure 3 As shown, a rubber tube is installed between the guide tube 231c and the mounting sleeve 23. The rubber tube is used to increase the sealing between the guide tube 231c and the mounting sleeve 23.

[0055] Furthermore, the sealing between the guide pipe 231c and the mounting sleeve 23 is increased by using a rubber tube to prevent grain and oil from overflowing from the gap between the guide pipe 231c and the mounting sleeve 23.

[0056] In some embodiments, such as Figure 2 As shown, threaded holes are evenly distributed on the slide rail 281, and the diameter of the threaded holes is compatible with the positioning pin 283.

[0057] Furthermore, the threaded holes on the slide rail 281 are used to connect with the positioning pin 283. By connecting the positioning pin 283 with the threaded holes at different positions, the slide plate 282 can be fixed in different positions to adjust the height of the flange joint 211.

[0058] The working principle of this application is illustrated below with a preferred embodiment:

[0059] The base 32 is used to fix the position of the support column 1. Then, the height of the support column 1 is adjusted on the outer wall of the connecting rod 31. After the flange joint 211 and the oil pipeline are aligned, the nut 333 is used to lock the position of the threaded pin 331 on the slide groove of the support column 1, thereby fixing the height of the support column 1. According to the usage requirements, the disc 231a is rotated in the mounting sleeve 23. The disc 231a drives the oil injection pipe 231d to shift through the guide pipe 231c. Then, the bolt 231b is used to fix the position of the disc 231a in the mounting sleeve 23. When injecting oil into the bottom oil inlet of the tanker truck, the position of the oil injection pipe 231d is adjusted laterally and inserted directly into the oil inlet. When injecting oil into the top of the tanker truck... When the oil is being injected, the rotating shaft 262 is rotated in the fixed frame 27. The rotating shaft 262 drives the hydraulic rod 26 to tilt through the clamp 261. Then, the corresponding insert plate 264 in the mounting base 265 is rotated. The insert plate 264 is inserted into the corresponding slot of the limit plate 263, thereby fixing the tilt angle of the hydraulic rod 25. Then, the hydraulic rod 25 is started. The output end of the hydraulic rod 25 drives the support plate 24 to move. The support plate 24 drives the telescopic hose 22 to extend, thereby inserting the oil injection pipe 231d into the oil injection port on the top of the oil tanker. Under the action of the external high-pressure pump, the grain and oil are introduced into the oil inlet pipe 21. The grain and oil flow through the telescopic hose 22 and the guide pipe 231c in sequence, and finally enter the oil tanker through the oil injection pipe 231d.

[0060] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. An automatic telescopic loading arm, comprising a support column (1), characterized in that, The supporting column (1) is equipped with a loading arm assembly (2), which can be connected to the oil inlet at the bottom or top of the tanker truck to allow grain and oil to be introduced into the tanker truck. The loading arm assembly (2) includes an oil inlet pipe (21), a telescopic hose (22), an installation sleeve (23), a support plate (24), a hydraulic rod (25), a first locking element (26), a fixing frame (27), and a connecting element (28); The oil inlet pipe (21) is connected to the supporting column (1) through the connector (28). One end of the telescopic hose (22) is connected to the oil inlet pipe (21), and the other end of the telescopic hose (22) is connected to the mounting sleeve (23). The center hole of the support plate (24) is fixedly connected to the mounting sleeve (23). The output end of the hydraulic rod (25) is fixedly connected to the support plate (24). The fixing frame (27) is connected to the hydraulic rod (25) through the first locking member (26). The end of the fixing frame (27) away from the hydraulic rod (25) is fixedly connected to the oil inlet pipe (21).

2. The automatic telescopic loading arm according to claim 1, characterized in that, The first locking member (26) includes a card holder (261), a rotating shaft (262), a limiting plate (263), a insert plate (264), and a mounting base (265); The card holder (261) and the tail end of the hydraulic rod (25) are fixedly connected. The card holder (261) is rotatably connected to the fixing frame (27) through the rotating shaft (262). The center hole of the limiting plate (263) and the end of the rotating shaft (262) away from the card holder (261) are fixedly connected. The insert plate (264) is inserted into the slot of the limiting plate (263). The mounting base (265) is hinged to the insert plate (264) through a pin. The side of the mounting base (265) away from the insert plate (264) is fixedly connected to the fixing frame (27).

3. The automatic telescopic loading arm according to claim 1, characterized in that, The connector (28) includes a slide rail (281), a slide plate (282), and a positioning pin (283); The slide rail (281) and the supporting column (1) are fixedly connected. The slide plate (282) and the slide rail (281) are slidably connected. The end of the slide plate (282) away from the supporting column (1) is fixedly connected to the oil inlet pipe (21). The slide plate (282) is connected to the slide rail (281) through the positioning pin (283).

4. The automatic telescopic loading arm according to claim 1, characterized in that, A conversion element (231) is installed in the mounting sleeve (23), and the conversion element (231) is used to change the oil outlet direction of the mounting sleeve (23); The conversion component (231) includes a disc (231a), a bolt (231b), a guide pipe (231c), and an oil injection pipe (231d); The disc (231a) is inserted into the slot of the mounting sleeve (23). The disc (231a) is connected to the mounting sleeve (23) by bolts (231b). The guide tube (231c) passes through the through hole of the disc (231a) and extends into the cavity of the mounting sleeve (23). The guide tube (231c) is fixedly connected to the center hole of the disc (231a). The oil injection pipe (231d) is connected to the end of the guide tube (231c) away from the disc (231a).

5. An automatic telescopic loading arm according to claim 1, characterized in that, An adjustment component (3) is installed in the support column (1), and the adjustment component (3) is used to adjust the working height of the support column (1); The adjustment assembly (3) includes a connecting rod (31), a base (32), and a second locking member (33); The connecting rod (31) is inserted into the cavity of the supporting column (1), the base (32) and the bottom end of the connecting rod (31) are fixedly connected, and the second locking member (33) is used to fix the position of the connecting rod (31).

6. An automatic telescopic loading arm according to claim 5, characterized in that, The second locking element (33) includes a threaded pin (331), a washer (332), and a nut (333); One end of the threaded pin (331) is fixedly connected to the connecting rod (31), and the other end of the threaded pin (331) passes through the groove of the supporting column (1) and is connected to the nut (333). The washer (332) is located between the nut (333) and the supporting column (1).

7. An automatic telescopic loading arm according to claim 1, characterized in that, The bottom end of the oil inlet pipe (21) is fixedly connected to a flange joint (211), which is used to connect to the oil pipeline.

8. An automatic telescopic loading arm according to claim 1, characterized in that, The telescopic hose (22) includes a metal wire (221) for increasing the strength of the telescopic hose (22).

9. An automatic telescopic loading arm according to claim 4, characterized in that, A rubber tube is installed between the guide tube (231c) and the mounting sleeve (23) to increase the sealing between the guide tube (231c) and the mounting sleeve (23).

10. An automatic telescopic loading arm according to claim 3, characterized in that, The slide rail (281) has threaded holes evenly distributed on it, and the diameter of the threaded holes is adapted to the positioning pin (283).