Low-temperature liquid heat insulation tank car traction pin assembly capable of achieving surge peak clipping

Abstract

The utility model discloses a low-temperature liquid heat insulation tank car traction pin assembly capable of achieving surge peak clipping. Comprising traction racks arranged on the two sides of the lower portion of the outer wall of a tank body of an outer container of the low-temperature liquid heat insulation tank car, traction bases connected to the lower portions of the traction racks, a traction chamber arranged in the traction bases and a composite elastic deformation body installed in the traction chamber. The composite elastic deformation body comprises a rigid body and an elastic body, the rigid body is slidably arranged in the traction chamber in the horizontal direction, the elastic body is arranged on the rigid body, and the elastic body in the composite elastic deformation body is in elastic deformation connection with the traction chamber in the horizontal direction. A traction pin is vertically arranged on a rigid body in the composite elastic deformation body downwards, and the traction pin downwards penetrates through a neutral gear on the lower chamber wall of the traction chamber and then is exposed to the position below the traction base. The surge impact resistance safety of the low-temperature liquid heat insulation tank car is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of cryogenic liquid storage and transportation, in particular to a cryogenic liquid insulated tank truck traction pin assembly capable of achieving surge peak cutting. Background Art

[0002] A cryogenic liquid insulated tanker is a container used to store cryogenic liquids and transport them on public roads. It typically utilizes a semitrailer. The tanker's overall structure includes the tank, a running mechanism located at the rear, and a tow pin assembly located at the front for connection to the semitrailer. The tow pin assembly on the tank connects the cryogenic liquid insulated tanker to the semitrailer, enabling transportation of the cryogenic liquid insulated tanker.

[0003] The tank body of a cryogenic liquid insulated tank truck is a double-layer tank body. The inner tank body (inner container) is used to store cryogenic liquids such as liquid hydrogen, liquid oxygen, liquid nitrogen, and liquefied gas (the temperature is usually below -100°C). The outer tank body (outer container) is arranged on the periphery of the inner tank body, and the enclosed space between the outer tank body and the inner tank body is evacuated to form an insulating space; in addition, a layer of insulating material is also provided on the inner tank body.

[0004] During the transportation process, cryogenic liquid insulated tank trucks are subject to external factors (such as sudden stops, sudden starts, and accidental collisions with the front of the vehicle). The liquid in the tank will shake violently due to inertia, causing a surge impact on the tank body. The huge liquid surge impact force can potentially damage the tank body, thereby causing a major safety hazard. Based on actual usage analysis, the surge impact force generated by cryogenic liquid insulated tank trucks is usually the greatest in the three situations of starting, sudden stops, and accidental collisions with the front of the vehicle. This can cause the liquid surge in the tank body to reach its maximum peak, and its potential damage to the tank body is the greatest, which can easily lead to potential dangers such as liquid leakage or even explosion inside the tank body. Therefore, if ways can be found to reduce or minimize the surge peaks caused by tank truck starting, sudden stops, and accidental collisions with the front of the vehicle, the safety of cryogenic liquid insulated tank trucks can be greatly improved. Utility Model Content

[0005] To address the above issues, this utility model proposes a traction pin assembly for cryogenic liquid insulated tank trucks that can achieve surge peak reduction, aiming to improve the safety of cryogenic liquid insulated tank trucks against surge impacts. The specific technical solution is as follows:

[0006] The traction pin assembly of a cryogenic liquid insulated tank truck capable of achieving surge peak cutting comprises a traction frame arranged at both sides of the lower part of the tank body wall of the outer container of the cryogenic liquid insulated tank truck, a traction base connected to the lower part of the traction frame, a traction chamber arranged in the traction base, and a composite elastic deformation body installed in the traction chamber, the composite elastic deformation body comprises a rigid body arranged in the traction chamber for sliding in the horizontal direction, an elastic body arranged on the rigid body, an elastic deformation connection is formed between the elastic body in the composite elastic deformation body and the traction chamber in the horizontal direction, a gap is provided on the lower wall of the traction chamber that passes through the gap up and down, a traction pin is vertically provided on the rigid body in the composite elastic deformation body, and the traction pin passes downward through the gap on the lower wall of the traction chamber and is exposed to the lower position of the traction base.

[0007] In the present invention, the traction base is located at the front lower side of the tank body of the outer container of the cryogenic liquid insulated tank truck.

[0008] As one of the preferred solutions of the elastic body structure in the present invention, the elastic body is an annular elastic rubber belt wrapped around the four sides of the rigid body, and the annular elastic rubber belt is in elastic contact with the four inner side walls of the traction chamber.

[0009] As the second preferred solution of the elastomer structure in the present invention, the elastomer is an elastic rubber sleeve densely arranged in an array in the rigid body, and a transmission pin is inserted into each elastic rubber sleeve in an elastic contact manner, and the upper and lower ends of the transmission pin are respectively connected to the upper side wall and the lower side wall of the traction chamber.

[0010] Preferably, the rigid body is provided with both the annular elastic rubber belt and the elastic rubber sleeve.

[0011] In the present invention, the rigid body is densely provided with rubber sleeve mounting holes which pass through the rigid body in an array arrangement, and the elastic rubber sleeve is mounted in the rubber sleeve mounting holes in an elastic contact manner.

[0012] Preferably, the horizontal cross-section of the traction chamber is rectangular or circular.

[0013] When the horizontal cross-sectional shape of the traction chamber is rectangular, the rigid body adopts a rectangular rigid plate with a rectangular horizontal cross-sectional shape, and the elastic rubber sleeves are densely arranged in the rubber sleeve mounting holes of the rectangular rigid plate in a matrix array arrangement; when the horizontal cross-sectional shape of the traction chamber is circular, the rigid body adopts a circular rigid plate with a circular horizontal cross-sectional shape, and the elastic rubber sleeves are densely arranged in the rubber sleeve mounting holes of the circular rigid plate in a matrix array arrangement.

[0014] As a preferred solution of the traction base structure, the traction base is provided with an inner cavity with an open lower end for forming the traction chamber, and a cover plate is provided at the lower end of the traction base, which covers the open inner cavity on the traction base to form the traction chamber; the cover plate is fixed to the lower end surface of the traction base by bolts, and a plurality of positioning pins are further provided between the traction base and the cover plate.

[0015] Among them, the top surface of the inner cavity of the traction base is densely provided with multiple upper pin holes in an array arrangement, and the cover plate is densely provided with multiple lower pin holes in an array arrangement, and the upper and lower ends of each transmission pin are respectively positioned in the upper pin hole and the lower pin hole.

[0016] Preferably, the upper pin hole and the lower pin hole are blind holes or stepped through holes, which can realize the limiting of the transmission pin in the up and down directions.

[0017] In the present invention, the number of the traction racks is four, and each two traction racks form a group. The two groups of traction racks are placed on both sides of the outer wall of the tank body of the outer container of the low-temperature liquid insulated tank truck; the traction base is connected to the lower position of the four traction racks.

[0018] In the utility model, a traction pin mounting hole is provided on the rigid body, and a positioning column and a mounting flange are provided on the traction pin. The traction pin is positioned in the traction pin mounting hole by the positioning column and is fixed to the rigid body by screws provided on the mounting flange.

[0019] Preferably, a sealing ring assembly is installed in the gap (the middle inner hole of the cover plate) in the lower wall of the traction chamber, filling and sealing the gap to form a sealed chamber. When installing the composite elastic deformable body, a layer of lubricating grease is applied to the sliding mating surfaces between the upper and lower surfaces of the sealed chamber and the rigid body (rectangular rigid plate or circular rigid plate) to reduce the resistance of the rigid body to horizontal sliding.

[0020] The beneficial effects of the utility model are:

[0021] First, the utility model provides a traction pin assembly of a cryogenic liquid insulated tank truck that can achieve surge peak cutting. By arranging a composite elastic deformation body in the traction chamber of the traction base, it can play a buffering shifting role between the tank truck and the front of the truck when the tank truck starts, stops suddenly or the front of the truck collides accidentally, thereby effectively reducing or cutting the surge peak of the liquid in the tank body, thereby improving the safety of the cryogenic liquid insulated tank truck against surge impact.

[0022] Second, the utility model provides a low-temperature liquid insulated tank truck traction pin assembly that can achieve surge peak clipping. By setting the elastomer in the composite elastic deformation body as an elastic rubber sleeve densely arranged in an array in a rigid body, the impact force between the tank truck and the front of the vehicle can be decomposed into each elastic rubber sleeve, so that the impact force borne by each elastic rubber sleeve is smaller. Compared with the elastomer using an annular elastic rubber belt, the fatigue strength and service life of the elastomer can be greatly improved, thereby reducing the maintenance and replacement costs of the traction pin assembly.

[0023] Third, the utility model provides a traction pin assembly for a cryogenic liquid insulated tank truck that can achieve surge peak cutting. Regardless of whether the elastic body adopts an annular elastic rubber belt or an elastic rubber sleeve arranged in an array, or adopts both an annular elastic rubber belt and an elastic rubber sleeve arranged in an array, it can achieve a bidirectional buffering effect in the longitudinal and lateral directions, thereby further improving the safety of the cryogenic liquid insulated tank truck against surge impact. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is one of the structural schematic diagrams of a traction pin assembly of a cryogenic liquid insulated tanker capable of achieving surge peak cutting (using an annular elastic rubber belt as the elastic body);

[0025] Figure 2 This is the second structural diagram of a traction pin assembly of a cryogenic liquid insulated tanker capable of achieving surge peak cutting according to the present invention (using elastic rubber sleeves arranged in an array as the elastic body);

[0026] Figure 3 This is the third structural diagram of a traction pin assembly of a cryogenic liquid insulated tanker capable of achieving surge peak cutting according to the present invention (an annular elastic rubber belt and an array of elastic rubber sleeves are used as the elastic body);

[0027] Figure 4 It is a structural schematic diagram of a traction pin assembly installed on a cryogenic liquid insulated tank truck.

[0028] In the figure: 102, outer container;

[0029] In the figure: 300, traction pin assembly, 301, traction frame, 302, traction base, 303, traction chamber, 304, composite elastic deformable body, 305, rigid body, 306, elastic body, 307, neutral gear, 308, traction pin, 309, annular elastic rubber belt, 310, elastic rubber sleeve, 311, transmission pin, 312, upper side wall, 313, lower side wall, 314, cover plate, 315, bolt, 316, locating pin, 317, traction pin mounting hole, 318, locating column, 319, mounting flange, 320, screw, 321, upper pin hole, 322, lower pin hole. DETAILED DESCRIPTION

[0030] The following embodiments are used to further describe the specific embodiments of the present invention in conjunction with the accompanying drawings and examples. The following embodiments are only used to more clearly illustrate the technical solutions of the present invention and are not intended to limit the scope of protection of the present invention.

[0031] like Figures 1 to 4 The figure shows an embodiment of a cryogenic liquid insulated tank truck traction pin assembly capable of achieving surge peak clipping according to the present invention, comprising a traction frame 301 disposed on both sides of the lower portion of the outer wall of the outer container 102 of the cryogenic liquid insulated tank truck, a traction base 302 connected to the lower portion of the traction frame 301, a traction chamber 303 disposed within the traction base 302, and a composite elastic deformation body 304 installed within the traction chamber 303. The composite elastic deformation body 304 comprises a rigid body disposed horizontally and slidingly within the traction chamber 303. 305. An elastic body 306 is arranged on the rigid body 305. An elastic deformation connection is formed between the elastic body 306 in the composite elastic deformation body 304 and the traction chamber 303 in the horizontal direction. A gap 307 passing through the lower wall of the traction chamber 303 is provided. A traction pin 308 is vertically provided downward on the rigid body 305 in the composite elastic deformation body 304. The traction pin 308 passes downward through the gap 307 on the lower wall of the traction chamber 303 and is exposed to the lower position of the traction base 302.

[0032] In this embodiment, the traction base 302 is located at the front lower side of the tank body of the outer container 102 of the cryogenic liquid insulated tank truck.

[0033] As one of the preferred solutions for the elastic body structure in this embodiment, the elastic body 306 is an annular elastic rubber belt 309 wrapped around the four sides of the rigid body 305 , and the annular elastic rubber belt 309 is in elastic contact with the four inner side walls of the traction chamber 303 .

[0034] As the second preferred solution of the elastomer structure in this embodiment, the elastomer 305 is an elastic rubber sleeve 310 densely arranged in an array within the rigid body 305, and a transmission pin 311 is inserted into each of the elastic rubber sleeves 310 in an elastic contact manner, and the upper and lower ends of the transmission pin 311 are respectively connected to the upper side wall 312 and the lower side wall 313 of the traction chamber 303.

[0035] Preferably, the rigid body 305 is provided with the annular elastic rubber belt 309 and the elastic rubber sleeve 310 .

[0036] In this embodiment, the rigid body 305 is densely provided with rubber sleeve mounting holes that pass through it in an array arrangement, and the elastic rubber sleeve 310 is installed in the rubber sleeve mounting holes in an elastic contact manner.

[0037] Preferably, the horizontal cross-section of the traction chamber 303 is rectangular or circular.

[0038] When the horizontal cross-sectional shape of the traction chamber 303 is rectangular, the rigid body 305 adopts a rectangular rigid plate with a rectangular horizontal cross-sectional shape, and the elastic rubber sleeves 310 are densely arranged in the rubber sleeve mounting holes of the rectangular rigid plate in a matrix array arrangement; when the horizontal cross-sectional shape of the traction chamber 303 is circular, the rigid body 305 adopts a circular rigid plate with a circular horizontal cross-sectional shape, and the elastic rubber sleeves 310 are densely arranged in the rubber sleeve mounting holes of the circular rigid plate in a matrix array arrangement.

[0039] As a preferred solution of the traction base structure, the traction base 302 is provided with an inner cavity with an open lower end for forming the traction chamber 303, and a cover plate 314 is provided at the lower end of the traction base 302. The cover plate 314 covers the open inner cavity on the traction base 302 to form the traction chamber 303; the cover plate 314 is fixed to the lower end surface of the traction base 302 by bolts 315, and a number of positioning pins 316 are also provided between the traction base 302 and the cover plate 314.

[0040] Among them, the top surface of the inner cavity of the traction base 302 is densely provided with a plurality of upper pin holes 321 in an array arrangement, and the cover plate 314 is densely provided with a plurality of lower pin holes 322 in an array arrangement, and the upper and lower ends of each transmission pin 311 are respectively positioned in the upper pin hole 321 and the lower pin hole 322.

[0041] Preferably, the upper pin hole 321 and the lower pin hole 322 are blind holes or stepped through holes, which can limit the transmission pin 311 in the upper and lower directions.

[0042] In this embodiment, the number of the traction racks 301 is four, and each two traction racks 301 form a group. The two groups of traction racks 301 are placed on both sides of the outer wall of the tank body 102 of the low-temperature liquid insulated tank truck; the traction base 302 is connected to the lower position of the four traction racks 301.

[0043] In this embodiment, a traction pin mounting hole 317 is provided on the rigid body 305, and a positioning column 318 and a mounting flange 319 are provided on the traction pin 308. The traction pin 308 is positioned in the traction pin mounting hole 317 by the positioning column 318 and is fixed to the rigid body 305 by a screw 320 provided on the mounting flange 319.

[0044] Preferably, a sealing ring assembly (not shown) is installed in the gap 307 (the middle inner hole of the cover plate 314) on the lower wall of the traction chamber 303. This seals the gap 307, forming a sealed chamber. When installing the composite elastic deformable body 304, a layer of lubricating grease is applied to the sliding mating surfaces between the upper and lower surfaces of the sealed chamber and the rigid body 305 (rectangular or circular rigid plate) to reduce resistance to horizontal sliding of the rigid body 305.

[0045] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as within the scope of protection of the present invention.

Claims

1. A cryogenic liquid insulated tank truck traction pin assembly capable of achieving surge peak cutting, characterized in that: The invention comprises a traction frame arranged on both sides of the lower part of the outer wall of the outer container of the low-temperature liquid insulated tank truck, a traction base connected to the lower part of the traction frame, a traction chamber arranged in the traction base, and a composite elastic deformation body installed in the traction chamber. The composite elastic deformation body comprises a rigid body arranged in the traction chamber for sliding in the horizontal direction, an elastic body arranged on the rigid body, an elastic deformation connection is formed between the elastic body in the composite elastic deformation body and the traction chamber in the horizontal direction, a gap is provided on the lower wall of the traction chamber which passes through the gap up and down, a traction pin is vertically provided on the rigid body in the composite elastic deformation body, and the traction pin passes downward through the gap on the lower wall of the traction chamber and is exposed to the lower position of the traction base.

2. The cryogenic liquid insulated tank truck traction pin assembly capable of achieving surge peak clipping according to claim 1, characterized in that: The elastic body is an annular elastic rubber belt wrapped around the four sides of the rigid body, and the annular elastic rubber belt is in elastic contact with the four inner side walls of the traction chamber.

3. The cryogenic liquid insulated tank truck traction pin assembly capable of achieving surge peak clipping according to claim 1, characterized in that: The elastic body is an elastic rubber sleeve densely arranged in an array in the rigid body, and a transmission pin is inserted into each elastic rubber sleeve in an elastic contact manner. The upper and lower ends of the transmission pin are respectively connected to the upper side wall and the lower side wall of the traction chamber.

4. The cryogenic liquid insulated tank truck traction pin assembly capable of achieving surge peak clipping according to claim 3, characterized in that: The rigid body is densely provided with rubber sleeve mounting holes which pass through the rigid body in an array arrangement, and the elastic rubber sleeve is mounted in the rubber sleeve mounting holes in an elastic contact manner.

5. The cryogenic liquid insulated tank truck traction pin assembly capable of achieving surge peak clipping according to claim 4, characterized in that: The horizontal cross-section of the traction chamber is rectangular or circular.

6. The cryogenic liquid insulated tank truck traction pin assembly capable of achieving surge peak clipping according to claim 5, characterized in that: When the horizontal cross-sectional shape of the traction chamber is rectangular, the rigid body adopts a rectangular rigid plate with a rectangular horizontal cross-sectional shape, and the elastic rubber sleeves are densely arranged in the rubber sleeve mounting holes of the rectangular rigid plate in a matrix array arrangement; when the horizontal cross-sectional shape of the traction chamber is circular, the rigid body adopts a circular rigid plate with a circular horizontal cross-sectional shape, and the elastic rubber sleeves are densely arranged in the rubber sleeve mounting holes of the circular rigid plate in a matrix array arrangement.

7. The cryogenic liquid insulated tank truck traction pin assembly capable of achieving surge peak cutting according to claim 6, characterized in that: The traction base is provided with an inner cavity with an open lower end for forming the traction chamber, and a cover plate is provided at the lower end of the traction base, which covers the open inner cavity on the traction base to form the traction chamber; the cover plate is fixed to the lower end surface of the traction base by bolts, and a plurality of positioning pins are further provided between the traction base and the cover plate.

8. The cryogenic liquid insulated tank truck traction pin assembly capable of achieving surge peak clipping according to claim 7, characterized in that: The top surface of the inner cavity of the traction base is densely provided with a plurality of upper pin holes in an array arrangement, and the cover plate is densely provided with a plurality of lower pin holes in an array arrangement, and the upper and lower ends of each transmission pin are respectively positioned in the upper pin hole and the lower pin hole.

9. The cryogenic liquid insulated tank truck traction pin assembly capable of achieving surge peak clipping according to claim 1, characterized in that: There are four traction racks, two of which form a group, and two groups of traction racks are placed on both sides of the outer wall of the outer container of the cryogenic liquid insulated tank truck; the traction base is connected to the lower position of the four traction racks.

10. The cryogenic liquid insulated tank truck traction pin assembly capable of achieving surge peak clipping according to claim 1, characterized in that: The rigid body is provided with a traction pin mounting hole, the traction pin is provided with a positioning column and a mounting flange, the traction pin is positioned in the traction pin mounting hole by the positioning column and is fixed to the rigid body by a screw provided on the mounting flange.

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