A pneumatic control module for a hydrogen loading and unloading arm

Abstract

The present invention relates to the technical field of fluid pressure actuators, and in particular to a pneumatic control module for a hydrogen loading and unloading truck arm, which includes a column. A first inlet pipe and a second inlet pipe are fixedly welded to the upper and lower sides of the column side wall in a staggered manner. Inner arms are movably assembled on both the first inlet pipe and the second inlet pipe, and the inner arms are movably assembled with outer arms through first connecting pipes. The pneumatic control module for a hydrogen loading and unloading truck arm of the present invention can be vertically stored on both sides of the column during idle time by adopting a staggered layout design on both sides, greatly reducing the occupation of its external space; the angles of the inner arm, the outer arm, and the vertical pipe are respectively driven by the pressure inside the loading and unloading truck arm, without the need for additional external power, with lower operating costs and more convenient operation; the inner arm uses internal pressure to control the strut drive, while the outer arm and the vertical pipe use internal pressure to control the rotation drive, which can ensure the stability of the entire truck arm and increase the external control range.

Description

Technical Field

[0001] The present invention relates to the technical field of fluid pressure execution, and in particular to a pneumatic control module for a hydrogen loading and unloading arm of a vehicle. Background Art

[0002] When loading and unloading liquid hydrogen currently, a vacuum hose is used to connect to the vehicle, which has the following defects: The existing loading and unloading crane pipe of the vehicle will occupy a large amount of lateral space when idle, resulting in the crane pipe being exposed outside. Moreover, the control of the crane pipe still requires external power to drive, which is very inconvenient to operate, cannot effectively utilize the internal pressure, and at the same time the operable range is also very limited. Summary of the Invention

[0003] The technical problem to be solved by the present invention is that the existing hydrogen loading and unloading crane pipe occupies a large amount of space when idle, is very inconvenient to store, requires external power for rotation control, has a high operation cost, and at the same time the operable range is very limited.

[0004] The technical solution adopted by the present invention to solve its technical problems is: A pneumatic control module for a hydrogen loading and unloading arm of a vehicle, including a column. A first inlet pipe and a second inlet pipe are welded and fixed at the upper and lower ends of the side wall of the column in a staggered manner. Inner arms are movably assembled on both the first inlet pipe and the second inlet pipe. The inner arm is movably assembled with an outer arm through a first connecting pipe. The outer arm is movably assembled with a vertical pipe through a second connecting pipe. An embedded turning strut for controlling the turning of the inner arm is movably assembled on the side wall of the column. A fluid control unit is sleeved on the outer sides of the first connecting pipe and the second connecting pipe.

[0005] Embedded turning grooves are provided on the side walls of the first inlet pipe and the second inlet pipe on the outside of the column.

[0006] The embedded turning strut includes an embedded flow guide cover fixedly installed on the side wall of the embedded turning groove, a strut body movably installed inside the embedded turning groove through a shaft, and an embedded control valve installed at the end of the embedded flow guide cover.

[0007] An inner arm connection bracket for movably connecting the extended end of the strut body is welded and fixed on the side wall of the inner arm.

[0008] The fluid control unit includes a fixed external housing fixedly installed on the outside of the first connecting pipe and the second connecting pipe, a movable internal housing fixedly installed on the outside of the outer arm and the vertical pipe, internal adjusting blades fixedly installed on the surface of the movable internal housing, a first flow guide pipe and a second flow guide pipe fixedly installed on the outer side surface of the fixed external housing, and a third flow guide pipe fixed on the outer wall of the movable internal housing.

[0009] Electrically controlled one-way check valves are fixedly assembled inside the first flow guide pipe and the second flow guide pipe.

[0010] A plurality of lateral conduits for internally installing manual valves are fixedly welded on the outer side surface of the outer arm.

[0011] A hollow interlayer for externally connecting gas purging is provided on the inner wall of the fixed external housing.

[0012] A lateral stabilizing cylinder is mounted on the outer side surface of the outer arm through a bracket, and an arc-shaped limiting bracket matched with the lateral stabilizing cylinder is provided on the outer side surface of the fixed external housing.

[0013] An end electric control valve is axially fixed at the cylinder end of the lateral stabilizing cylinder, and the extending end of the lateral stabilizing cylinder is movably connected to the arc-shaped limiting bracket through a shaft.

[0014] The beneficial effects of the present invention are as follows:

[0015] (1) By adopting a design of staggered layout on both sides, the pneumatic control module for the hydrogen loading and unloading arm of the present invention can be vertically stored on both sides of the column during idle time, greatly reducing the occupation of its external space;

[0016] (2) The angles of the inner arm, the outer arm and the vertical pipe are respectively driven by the pressure inside the loading and unloading arm, without the need for additional external power, with lower operating costs and more convenient operation;

[0017] (3) The inner arm uses internal pressure to control the driving of the strut, and the outer arm and the vertical pipe use internal pressure to control the rotational driving, which can ensure the stability of the entire arm and expand the external control range;

[0018] (4) The embedded flip strut is arranged inside the embedded flip groove on the outside of the column, greatly improving the fitting degree of the external loading and unloading arm;

[0019] (5) The fluid control unit can quickly control the angle switching adjustment, and the angle adjustment is more rapid;

[0020] (6) The internal fluid used to control the driving of the fluid control unit will be led into the subsequent pipe body after the driving is completed, greatly reducing the driving loss and saving the driving cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The present invention will be further described below with reference to the drawings and embodiments.

[0022] Figure 1 FIG. is the structural schematic diagram of the present invention.

[0023] Figure 2 FIG. is the partial structural schematic diagram of the present invention.

[0024] Figure 3 FIG. is the partial structural schematic diagram of the connection end of the outer arm in the present invention.

[0025] Figure 4 It is a schematic diagram of the internal structure of the fluid control unit in the present invention.

[0026] Figure 5 It is a schematic diagram of the structure of the position of the embedded flip strut in the present invention. Detailed implementation manners

[0027] Now, the present invention will be further described in detail with reference to the accompanying drawings. These drawings are all simplified schematic diagrams, only illustrating the basic structure of the present invention in a schematic manner, so they only show the components related to the present invention.

[0028] In the description of the present invention, it should be noted that unless otherwise clearly specified and limited, the terms "connected" and "coupled" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0029] Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 A pneumatic control module for a hydrogen loading and unloading truck arm as shown in Figure 4 and Figure 5 includes a column 1. A first inlet pipe 2 and a second inlet pipe 3 are fixedly welded to the side wall of the column 1 at upper and lower positions with a dislocation. Inner arms 4 are movably assembled on both the first inlet pipe 2 and the second inlet pipe 3. The inner arms 4 are movably assembled with outer arms 6 through a first connecting pipe 5. The outer arms 6 are movably assembled with vertical pipes 8 through a second connecting pipe 7. An embedded flip strut 9 for controlling the flipping of the inner arms 4 is movably assembled on the side wall of the column 1. Fluid control units 10 are sleeved on the outer sides of the first connecting pipe 5 and the second connecting pipe 7.

[0030] Working principle: Connect the inlet pipe to the first inlet pipe 2 or the second inlet pipe 3 to communicate with the inner arm 4. By introducing the internal pressure of the first inlet pipe 2 or the second inlet pipe 3 into the embedded flip strut 9, the embedded flip strut 9 is driven, and the embedded flip strut 9 is used to control the outer flipping of the inner arm 4. At the same time, after the fluid is introduced into the inner arm 4, the fluid will be introduced into the first connecting pipe 5 along with the inner arm 4. The angle of the outer arm 6 is driven by the fluid control unit 10 on the outer side of the first connecting pipe 5. At the same time, after the fluid is introduced into the outer arm 6 along the first connecting pipe 5, it is introduced into the second connecting pipe 7 and then drives the vertical pipe 8 to be adjusted. A main control valve is also installed on the outer arm 6, which can adjust the flow rate inside the outer arm 6 to improve safety.

[0031] In order to cooperate with the lateral reverse adjustment, embedded flip grooves 11 are provided on the outer side of the column 1 on the side walls of the first inlet pipe 2 and the second inlet pipe 3.

[0032] In order to make reasonable use of the lateral space and reduce the gap between the inner wall 4 and the column 1 during storage, the embedded flip strut 9 includes an embedded flow guide cover 91 fixedly installed on the side wall of the embedded flip groove 11, a strut body 92 movably installed inside the embedded flip groove 11 through a shaft, and an embedded control valve 93 installed at the end of the embedded flow guide cover 91.

[0033] The function of the embedded control valve 93 is to control the telescopic limit of the strut body 92 through electric control opening and closing, and to control the reset of the strut body 92 by manually squeezing the inner arm 4 during idle time.

[0034] In order to cooperate with the connection control, an inner arm connection bracket 94 for movably connecting the extended end of the strut body 92 is fixedly welded on the side wall of the inner arm 4.

[0035] In order to cooperate with the rotation control, the fluid control unit 10 includes a fixed external housing 101 fixedly installed on the outside of the first connecting pipe 5 and the second connecting pipe 7, a movable internal housing 102 fixedly installed on the outside of the outer arm 6 and the vertical pipe 8, an internal adjustment vane 103 fixedly installed on the surface of the movable internal housing 102, a first flow guide pipe 104 and a second flow guide pipe 105 fixedly installed on the outer side surface of the fixed external housing 101, and a third flow guide pipe 106 fixed on the outer wall of the movable internal housing 102.

[0036] The fluid is introduced through the first flow guide pipe 104 or the second flow guide pipe 105, and then the fluid is introduced into the fixed external housing 101 to drive the internal adjustment vane 103 located inside the fixed external housing 101. The internal adjustment vane 103 is used to drive the movable internal housing 102, the outer arm 6 and the vertical pipe 8 to rotate. Since the diameters of the first flow guide pipe 104 and the second flow guide pipe 105 are relatively small, internal pressure is considered at the beginning of the design. By limiting the internal pressure, excessive pressure impact on the internal adjustment vane 103 is avoided, so that the pressure is always set within a reasonable range, so that the internal adjustment vane 103 can perform angle adjustment evenly and slowly. The pressure adjustment method is to set the diameters of the first flow guide pipe 104 and the second flow guide pipe 105 and their maximum output flow per unit time.

[0037] In order to avoid internal turbulence and improve the internal flow guide effect, an electronically controlled one-way check valve 107 is fixedly assembled inside the first flow guide pipe 104 and the second flow guide pipe 105.

[0038] The electronically controlled one-way check valve 107 can also cooperate with the first flow guide pipe 104 and the second flow guide pipe 105 to adjust the maximum internal output pressure to avoid excessive imported pressure.

[0039] In order to cooperate with the external control, a plurality of lateral conduits 13 for internally installing manual control valves 12 are fixedly welded on the outer side surface of the outer arm 6.

[0040] In order to prevent ice from affecting the rotation effect, a hollow interlayer 14 for external gas purging is provided on the inner wall of the fixed outer cover 101.

[0041] By conveying room temperature air into the hollow interlayer 14, the temperature inside the fixed external cover 101 can be guaranteed, thereby avoiding external icing caused by internal low temperature, which affects the regulation efficiency. At the same time, the interlayer design can also avoid affecting the internal fluid conveyance.

[0042] In order to lock the adjusted angle and improve the structural strength after adjustment, a lateral stabilizing cylinder 15 is installed on the outer side of the outer arm 6 through a bracket, and an arc-shaped limiting bracket 16 matching the lateral stabilizing cylinder is provided on the outer side of the fixed outer cover 101.

[0043] When the fluid control unit 10 controls the outer arm 6 to perform angle control, the stability of the outer arm 6 flipping can be improved, and the adjusted angle of the outer arm can be locked to ensure the stability of loading and unloading.

[0044] The lateral stabilizing cylinder 15 can also effectively reduce the adjustment speed of the fluid control unit 10 and improve safety.

[0045] In order to cooperate with the electric control, an end electric control valve 17 is axially fixed to the cylinder end of the lateral stabilizing cylinder 15 , and the extended end of the lateral stabilizing cylinder 15 is axially movably connected to the arc-shaped limiting bracket 16 .

[0046] The end electric control valve 17 is used to control the opening and closing states of the end inlet and initial port of the lateral stabilization cylinder 15. After the end electric control valve 17 is opened, the lateral stabilization cylinder 15 can be telescopically adjusted along with the fluid control unit 10; and then after the end electric control valve 17 is closed, the lateral stabilization cylinder 15 will be locked, and the angle of the fluid control unit 10 will be locked.

[0047] Based on the above ideal embodiments of the present invention, the relevant staff can make various changes and modifications without departing from the technical concept of the present invention through the above description. The technical scope of the present invention is not limited to the contents of the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. A pneumatic control module for a hydrogenation loading and unloading vehicle arm, comprising a column (1), characterized in that: A first inlet pipe (2) and a second inlet pipe (3) are staggeredly welded and fixed to the upper and lower ends of the side wall of the column (1); an inner arm (4) is movably mounted on the first inlet pipe (2) and the second inlet pipe (3); the inner arm is movably mounted on an outer arm (6) via a first connecting pipe (5); the outer arm (6) is movably mounted on a vertical pipe (8) via a second connecting pipe (7); an embedded flip support rod (9) for controlling the flipping of the inner arm (4) is movably mounted on the side wall of the column (1); and a fluid control unit (10) is mounted on the outer sides of the first connecting pipe (5) and the second connecting pipe (7); An embedded turning groove (11) is provided on the side walls of the first inlet pipe (2) and the second inlet pipe (3) on the outside of the column (1); The embedded flip support rod (9) comprises an embedded flow guide cover (91) fixedly mounted on the side wall of the embedded flip groove (11), a support rod body (92) movably mounted inside the embedded flip groove (11) via an axis, and an embedded control valve (93) mounted on the end of the embedded flow guide cover (91); The fluid control unit (10) comprises a fixed external cover (101) fixedly mounted on the outside of the first connecting tube (5) and the second connecting tube (7), a movable internal cover (102) fixedly mounted on the outside of the outer arm (6) and the vertical tube (8), an internal adjustment blade (103) fixedly mounted on the surface of the movable internal cover (102), a first flow guide tube (104) and a second flow guide tube (105) fixedly mounted on the outer surface of the fixed external cover (101), and a third flow guide tube (106) fixed on the outer wall of the movable internal cover (102); The first flow guide tube (104) and the second flow guide tube (105) are internally fixedly provided with an electrically controlled one-way check valve (107).

2. A pneumatic control module for a hydrogenation loading and unloading vehicle arm according to claim 1, characterized in that: An inner arm connecting bracket for movably connecting the extended end of the support rod body (92) is welded and fixed on the side wall of the inner arm (4).

3. The pneumatic control module for a hydrogenation loading and unloading vehicle arm according to claim 1, characterized in that: A plurality of lateral guide tubes (13) with manual valves (12) installed inside are welded and fixed on the outer side surface of the outer arm (6).

4. The pneumatic control module for a hydrogenation loading and unloading vehicle arm according to claim 1, characterized in that: The inner wall of the fixed external cover (101) is provided with a hollow interlayer for external gas purging.

5. The pneumatic control module for a hydrogenation loading and unloading vehicle arm according to claim 1, characterized in that: A lateral stabilizing cylinder (15) is mounted on the outer side of the outer arm (6) via a bracket, and an arc-shaped limiting bracket (16) matching the lateral stabilizing cylinder (15) is provided on the outer side of the fixed outer cover (101).

6. A pneumatic control module for a hydrogenation loading and unloading vehicle arm according to claim 5, characterized in that: An end electric control valve (17) is axially fixed to the cylinder end of the lateral stabilizing cylinder (15), and the extended end of the lateral stabilizing cylinder (15) is axially connected to the arc-shaped limiting bracket (16).

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