Liquefied natural gas tank car unloading mechanism

Abstract

The utility model discloses an unloading mechanism of a liquefied natural gas tank car, which relates to the technical field of liquefied natural gas tank cars, and comprises a bottom plate, an upright post, three groups of loading and unloading mechanisms, a joint, a fixing plate, a fixing mechanism and a limiting mechanism, and each loading and unloading mechanism comprises an inner loading and unloading arm and an outer loading and unloading arm. The connector and the fixing rod are connected together in a clamped mode, the limiting clamping rod is connected with the fixing rod in a clamped mode, the connector is fixed, disassembly and assembly are convenient, the sliding clamping rod is connected with the fixing folding rod in a clamped mode, the loading and unloading inner arm is limited and fixed, operation is convenient and fast, and the problem that in the prior art, multiple sets of bolts are used for fixing, and disassembly and assembly are inconvenient is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of liquefied natural gas tank trucks, in particular to a liquefied natural gas tank truck unloading mechanism. Background Art

[0002] The LNG tanker loading and unloading arm, also known as the crane pipe, is a material loading and unloading equipment that connects the tanker and the storage tank. It is suitable for loading and unloading LNG at ultra-low temperature, minus 162 degrees Celsius, and is widely used in LNG storage stations, peak-shaving stations, gas stations, etc. The LNG loading and unloading arm is composed of three main material pipes, universal joints, breakaway valves, etc., which ensures sealing while also ensuring the flexibility and safety of the equipment.

[0003] When the existing liquefied natural gas tank truck is unloaded, it is necessary to first release the restriction and fixation of the loading and unloading arm. In the prior art, the upper joint of the loading and unloading arm is fixed to the column by multiple sets of bolts, which is inconvenient to disassemble and fix. Therefore, a liquefied natural gas tank truck unloading mechanism is urgently needed to solve the above problems. Utility Model Content

[0004] The purpose of the embodiments of the utility model is to provide a liquefied natural gas tank truck unloading mechanism to solve the problems raised in the above-mentioned background technology.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A liquefied natural gas tank truck unloading mechanism comprises a bottom plate, a column and a three-unit unloading mechanism, wherein the bottom end of the column is connected to the bottom plate, the column is connected to the loading and unloading mechanism, the loading and unloading mechanism comprises an inner loading and unloading arm and an outer loading and unloading arm, the inner loading and unloading arm is rotatably connected to the column, the inner loading and unloading arm is movably connected to the outer loading and unloading arm, and further comprises:

[0007] A joint connected to the loading and unloading outer arm, wherein the joint is provided with a fixing hole;

[0008] A fixing plate connected to the column;

[0009] A fixing mechanism, one end of which is connected to the fixing plate and the other end of which is connected to the joint, for fixing the joint;

[0010] The limiting mechanism has one end connected to the loading and unloading inner arm and the other end connected to the column, and is used to limit the loading and unloading inner arm.

[0011] As a further solution of the utility model: the fixing mechanism includes:

[0012] A fixing rod is connected to the fixing plate and is engaged with the fixing hole on the joint, and a locking hole is provided on the fixing rod;

[0013] The limit clamping rod is clamped with the clamping hole on the fixing rod and abuts against the joint;

[0014] A sliding folding rod, one end of which is connected to the limit clamping rod;

[0015] A fixed cylinder is connected to the column and is slidably connected to the sliding folding rod;

[0016] The second elastic member is arranged inside the fixed tube, and one end of the elastic member is connected to the other end of the sliding folding rod, and the other end is connected to the fixed tube.

[0017] As a further solution of the utility model: the limiting mechanism includes:

[0018] A fixed folding rod connected to the loading and unloading inner arm, wherein a clamping slot is provided at the bottom end of the fixed folding rod;

[0019] The sliding folding rod is engaged with the clamping groove on the fixed folding rod, and the sliding folding rod is provided with a grip ring;

[0020] The bottom end of the rotating folding rod is rotatably connected to the column and is slidably connected to the sliding folding rod;

[0021] The elastic member 1 is arranged inside the sliding folding rod, and the bottom end is connected to the top end of the rotating folding rod, and the top end is connected to the top end of the sliding folding rod.

[0022] As a further solution of the utility model: it also includes:

[0023] a threaded rod connected to the bottom of the base plate;

[0024] A threaded sleeve, threadedly connected to the threaded rod;

[0025] The fixing bolt penetrates through the threaded sleeve and abuts against the threaded sleeve.

[0026] Compared with the prior art, the beneficial effects of the utility model are:

[0027] The utility model clamps a joint with a fixing rod together, utilizes a limit clamping rod to clamp with the fixing rod to fix the joint, and is convenient for disassembly and assembly; utilizes a sliding clamping rod to clamp with the fixing folding rod to limit and fix the loading and unloading inner arm, and is convenient to operate, thus eliminating the problem of using multiple sets of bolts for fixing in the prior art, which is inconvenient for disassembly and assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 The present invention is a schematic structural diagram of a liquefied natural gas tank truck unloading mechanism in an embodiment of the present invention.

[0029] Figure 2 for Figure 1 A schematic diagram of the enlarged structure at point A in the middle.

[0030] Figure 3 for Figure 1 A magnified schematic diagram of the structure at point B in the middle.

[0031] Figure 4 It is a three-dimensional diagram of the fixing rod in the embodiment of the utility model.

[0032] In the figure: 1, bottom plate; 2, threaded rod; 3, threaded sleeve; 4, fixing bolt; 5, column; 6, loading and unloading inner arm; 7, loading and unloading outer arm; 8, joint; 9, fixed folding rod; 10, sliding clamping rod; 11, rotating folding rod; 12, elastic part 1; 13, fixed plate; 14, fixed rod; 15, limit clamping rod; 16, sliding folding rod; 17, fixed cylinder; 18, elastic part 2; 19, right-angle fixing block. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0034] In the present utility model embodiment, please refer to Figures 1 to 4 A liquefied natural gas tank truck unloading mechanism comprises a bottom plate 1, a column 5 and a three-unit unloading mechanism, wherein the bottom end of the column 5 is connected to the bottom plate 1, the column 5 is connected to the loading and unloading mechanism, the loading and unloading mechanism comprises a loading and unloading inner arm 6 and a loading and unloading outer arm 7, the loading and unloading inner arm 6 is rotatably connected to the column 5, the loading and unloading inner arm 6 is movably connected to the loading and unloading outer arm 7, and further comprises:

[0035] A joint 8 is connected to the loading and unloading outer arm 7, and a fixing hole is provided on the joint 8;

[0036] A fixing plate 13 connected to the column 5;

[0037] A fixing mechanism, one end of which is connected to the fixing plate 13 and the other end of which is connected to the joint 8, for fixing the joint 8;

[0038] The limiting mechanism has one end connected to the loading and unloading inner arm 6 and the other end connected to the column 5, and is used to limit the loading and unloading inner arm 6.

[0039] In the initial state, the joint 8 is in contact with the fixed plate 13, the fixing mechanism fixes the joint 8, and the limiting mechanism limits the loading and unloading inner arm 6. When the natural gas in the liquefied natural gas tank truck needs to be unloaded, the fixing mechanism on the joint 8 is first released, and then the limiting mechanism on the loading and unloading inner arm 6 is released, and the joint 8 is connected to the joint on the tank truck to unload the natural gas.

[0040] As an embodiment of the present invention, please refer to Figure 1 , Figure 3 and Figure 4, the fixing mechanism comprises:

[0041] A fixing rod 14 is connected to the fixing plate 13 and is engaged with a fixing hole on the joint 8. A locking hole is provided on the fixing rod 14.

[0042] The limiting clamping rod 15 is clamped with the clamping hole on the fixing rod 14 and abuts against the joint 8;

[0043] A sliding folding rod 16, one end of which is connected to the limiting clamping rod 15;

[0044] The fixed cylinder 17 is connected to the column 5 and is slidably connected to the sliding folding rod 16;

[0045] The second elastic member 18 is disposed inside the fixed tube 17 , and one end of the elastic member 18 is connected to the other end of the sliding folding rod 16 , and the other end of the elastic member 18 is connected to the fixed tube 17 .

[0046] Pull the sliding folding rod 16, the elastic member 18 undergoes elastic deformation, the joint 8 is abutted against the fixed plate 13, and the fixed rod 14 is engaged with the fixed hole on the joint 8, and the sliding folding rod 16 is released. Under the reaction force of the elastic member 18, the sliding folding rod 16 moves, driving the limiting clamping rod 15 to engage with the clamping hole on the fixed rod 14, and the joint 8 is fixed; when it is necessary to unload the natural gas in the liquefied natural gas tank truck, first pull the sliding folding rod 16 to make the limiting clamping rod 15 disengage from the fixed rod 14, release the limit of the joint 8, and then release the limit of the loading and unloading inner arm 6 by the limiting mechanism, connect the joint 8 with the joint on the tank truck, and unload.

[0047] As an embodiment of the present invention, please refer to Figure 1 and Figure 2 , the limiting mechanism comprises:

[0048] A fixed folding rod 9 is connected to the loading and unloading inner arm 6, and a clamping groove is provided at the bottom end of the fixed folding rod 9;

[0049] The sliding folding rod 10 is engaged with the slot on the fixed folding rod 9, and a grip ring is provided on the sliding folding rod 10;

[0050] The bottom end of the rotating folding rod 11 is rotatably connected to the column 5 and is slidably connected to the sliding folding rod 10;

[0051] The elastic member 12 is disposed inside the sliding folding rod 10 , and the bottom end is connected to the top end of the rotating folding rod 11 , and the top end is connected to the top end of the sliding folding rod 10 .

[0052] In the initial state, the sliding folding rod 10 is slidably engaged with the slot on the fixed folding rod 9 to limit the loading and unloading inner arm 6. When the tank truck needs to be unloaded, the sliding folding rod 10 is pressed downward by holding the grip ring to make the sliding folding rod 10 disengage from the slot on the fixed folding rod 9, and then the rotating folding rod 11 is rotated to release the limit of the loading and unloading inner arm 6. The elastic member 12 can be a spring, a spring sheet, etc.

[0053] As an embodiment of the present invention, please refer to Figure 1 , also includes:

[0054] A threaded rod 2 connected to the bottom of the base plate 1;

[0055] The threaded sleeve 3 is threadedly connected with the threaded rod 2;

[0056] The fixing bolt 4 passes through the threaded sleeve 3 and abuts against it.

[0057] The threaded sleeve 3 is rotated to adjust the overall length of the threaded sleeve 3 and the threaded rod 2, thereby supporting the base plate 1, and the fixing bolt 4 is passed through the threaded sleeve 3 and connected to the ground, thereby fixing the base plate 1.

[0058] As an embodiment of the present invention, please refer to Figure 1 , also includes:

[0059] One end of the right-angle fixing block 19 is connected to the column 5 , and the other end is connected to the base plate 1 .

[0060] The upright column 5 is supported by the right-angle fixing block 19 , thereby improving the fixing strength of the upright column 5 .

[0061] The working principle of the utility model is: in the initial state, the joint 8 is in contact with the fixed plate 13, the fixing mechanism fixes the joint 8, and the limiting mechanism limits the loading and unloading inner arm 6. When the natural gas in the liquefied natural gas tank truck needs to be unloaded, the sliding folding rod 16 is first pulled to make the limiting clamping rod 15 disengage from the fixed rod 14, and the limit of the joint 8 is released. Then, the grip ring is held to press the sliding folding rod 10 downward to make the sliding folding rod 10 disengage from the clamping groove on the fixed folding rod 9, and then the rotating folding rod 11 is rotated to release the limit of the loading and unloading inner arm 6, and then the joint 8 is connected to the joint on the tank truck to unload the natural gas.

[0062] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

[0063] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A liquefied natural gas tank truck unloading mechanism, comprising a bottom plate, a column and a three-unit unloading mechanism, wherein the bottom end of the column is connected to the bottom plate, the column is connected to the loading and unloading mechanism, the loading and unloading mechanism comprises a loading and unloading inner arm and a loading and unloading outer arm, the loading and unloading inner arm is rotatably connected to the column, and the loading and unloading inner arm is movably connected to the loading and unloading outer arm, characterized in that: Also includes: A joint connected to the loading and unloading outer arm, wherein the joint is provided with a fixing hole; A fixing plate connected to the column; A fixing mechanism, one end of which is connected to the fixing plate and the other end of which is connected to the joint, for fixing the joint; The limiting mechanism has one end connected to the loading and unloading inner arm and the other end connected to the column, and is used to limit the loading and unloading inner arm.

2. A liquefied natural gas tank truck unloading mechanism according to claim 1, characterized in that: The fixing mechanism comprises: A fixing rod is connected to the fixing plate and is engaged with the fixing hole on the joint, and a locking hole is provided on the fixing rod; The limit clamping rod is clamped with the clamping hole on the fixing rod and abuts against the joint; A sliding folding rod, one end of which is connected to the limit clamping rod; A fixed cylinder is connected to the column and is slidably connected to the sliding folding rod; The second elastic member is arranged inside the fixed tube, and one end of the elastic member is connected to the other end of the sliding folding rod, and the other end is connected to the fixed tube.

3. A liquefied natural gas tank truck unloading mechanism according to claim 1, characterized in that: The limiting mechanism comprises: A fixed folding rod connected to the loading and unloading inner arm, wherein a clamping slot is provided at the bottom end of the fixed folding rod; The sliding folding rod is engaged with the clamping groove on the fixed folding rod, and the sliding folding rod is provided with a grip ring; The bottom end of the rotating folding rod is rotatably connected to the column and is slidably connected to the sliding folding rod; The elastic member 1 is arranged inside the sliding folding rod, and the bottom end is connected to the top end of the rotating folding rod, and the top end is connected to the top end of the sliding folding rod.

4. A liquefied natural gas tank truck unloading mechanism according to claim 1, characterized in that: Also includes: a threaded rod connected to the bottom of the base plate; A threaded sleeve, threadedly connected to the threaded rod; The fixing bolt penetrates through the threaded sleeve and abuts against the threaded sleeve.

5. The liquefied natural gas tank truck unloading mechanism according to claim 1, characterized in that: Also includes: A right-angle fixing block has one end connected to the column and the other end connected to the base plate.

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