A leak-proof device for a hazardous chemical transportation tank truck

Abstract

The application provides a leakage prevention device for a hazardous chemical transportation tank truck, the hazardous chemical transportation tank truck comprising a vehicle body and a storage tank arranged on the vehicle body, and the leakage prevention device comprising: a fixing seat fixed on the vehicle body; a connecting seat capable of moving back and forth in a certain range along the front-rear direction of the vehicle body and arranged on the fixing seat, wherein the storage tank is arranged on the connecting seat; and a damping seat having two and symmetrically arranged at the front and rear ends of the connecting seat. The application can reduce the probability of leakage of hazardous chemicals when the vehicle collides.

Description

Technical Field

[0001] This invention relates to the field of hazardous chemical transportation safety technology, specifically to a leak prevention device for hazardous chemical transport tank trucks. Background Technology

[0002] Tank trucks are tank-shaped transport vehicles used to carry various liquids, liquefied gases, and powdered goods. These goods include gasoline, crude oil, various viscous oils, vegetable oils, liquid ammonia, alcohol, water, various acid and alkali liquids, cement lead oxide powder, etc. Some tank trucks are also used to transport hazardous chemicals. Tank trucks generally have manholes on their tops that allow maintenance personnel to enter the tank. These manholes are easily damaged, and the hazardous liquids carried inside the tank can leak through the damaged manholes, potentially causing a major safety accident.

[0003] Chinese patent CN110127235B discloses a leak-proof device and method for a manhole on a liquid tanker truck. This device involves installing a manhole baffle, a cylinder, and a track groove inside the tank, working in conjunction with a pneumatic control unit. By controlling the pneumatic control unit, the device provides the necessary driving force to the moving part of the cylinder, causing it to slide in the track groove and move the manhole baffle to block the manhole. While this solution effectively prevents hazardous materials from leaking through the manhole during use, in traffic accidents, the collision often occurs at the front or rear of the vehicle, impacting the tank and causing damage to the front or rear, leading to leakage. Furthermore, because the rear of the vehicle is pressed against the rear of the tank, or the front of the vehicle is pressed against the front of the tank, it is difficult to accurately determine if a leak has occurred. Summary of the Invention

[0004] To address the aforementioned issues, a leak-proof device for hazardous chemical transport tank trucks is provided. The device utilizes a movable frame and a buffer plate to provide a first layer of impact mitigation, and the connection between the connecting seat and the fixed seat provides a second layer of impact mitigation. A resin protective plate forms a protective film to prevent leakage on the parts of the storage tank subjected to rigid impact.

[0005] To solve the above-mentioned technical problems, the present invention provides the following technical solution:

[0006] A leak-proof device for a hazardous chemical transport tanker truck, the tanker truck comprising a vehicle body and a storage tank mounted on the vehicle body, the leak-proof device comprising:

[0007] Mounting bracket, fixed to the vehicle body;

[0008] A connecting seat, which can move back and forth within a certain range along the front and rear direction of the vehicle body, is mounted on a fixed seat, and the storage tank is mounted on the connecting seat;

[0009] Two shock absorbers are symmetrically arranged at the front and rear ends of the connecting seat. The shock absorbers are movable back and forth relative to the connecting seat. Each shock absorber includes a movable frame, a buffer plate, and a resin protection plate. The movable frame is slidably arranged at the end of the fixed seat along the front and rear direction. The buffer plate is slidably arranged on the movable frame along the front and rear direction and is closer to the storage tank than the movable frame. The resin protection plate is arranged on the buffer plate and is closer to the storage tank than the buffer plate. The plane of the resin protection plate is perpendicular to the front and rear direction. When viewed along the front and rear direction, the resin protection plate at least partially coincides with the storage tank. When the storage tank moves back and forth, it can abut against the resin protection plate.

[0010] Preferably, the connecting seat is mounted on the fixed seat by a limiting frame. The limiting frame has a U-shaped structure with the opening facing downwards. Both ends of the limiting frame are fixed on the fixed seat, and the connecting seat is located inside the U-shape of the U-shaped structure.

[0011] Preferably, a wedge-shaped block is provided on the connecting seat, and the wedge-shaped block is movable up and down. A fixing hole is provided on the fixing seat to cooperate with the wedge-shaped block, and the wedge-shaped block can be selectively inserted into the fixing hole; and / or, a first spring is provided between each wedge-shaped block and the connecting seat, the upper end of the first spring abutting against the connecting seat, the lower end abutting against the wedge-shaped block, and the first spring is always in a compressed state.

[0012] Preferably, an extension strip is provided on the movable frame. When viewed along the front-back direction, each extension strip is aligned with a wedge block. The extension strip extends along the front-back direction, and when the extension strip moves back and forth with the movable frame, it can push the corresponding wedge block upward, causing the wedge block to disengage from the fixing hole; and / or, a first inclined surface is provided on the lower end of the wedge block and the side facing the extension strip. The first inclined surface gradually slopes away from the corresponding extension strip in a direction from top to bottom.

[0013] Preferably, the shock absorber seat further includes a movable plate, and the movable frame is provided with a movable plate at each end along the width direction of the tanker. When viewed along the width direction, the movable frame is L-shaped, and the movable frame and the movable plates on both sides form a bucket-shaped structure; and / or, the movable plate can move back and forth along the width direction.

[0014] Preferably, a guide protrusion is fixedly provided on the side of the movable plate facing the resin protection plate. The guide protrusion is located on the opposite side of the storage tank relative to the resin protection plate. The guide protrusion extends vertically. A second inclined surface is provided on the side of the guide protrusion facing the resin protection plate. The second inclined surface gradually slopes away from the resin protection plate along the direction away from the movable plate.

[0015] Preferably, each shock absorber seat is provided with two extension strips, and each extension strip is provided with a wedge plate. The wedge plate can slide relative to the corresponding extension strip along the width direction. The movable plate is connected to the wedge plate. A second spring is provided between the two movable plates corresponding to the same shock absorber seat. The second spring is always in a compressed state.

[0016] Preferably, a third inclined surface is provided on the outer side of the wedge plate near the storage tank, and the third inclined surface gradually slopes outward as it moves away from the storage tank; the cross-section of the fixing seat is U-shaped, the opening of the U-shape faces upward, and the third inclined surface mates with the corresponding inner wall surface of the fixing seat.

[0017] Preferably, each shock absorber also includes a movable block, a hinge rod, and a third elastic connector. The movable block is slidably disposed on the side of the movable frame facing the buffer plate. The sliding direction of the movable block is parallel to the width direction. There are two movable blocks. One end of the hinge rod is hinged to the movable block, and the other end of the hinge rod is hinged to the buffer plate. The hinge axis between the hinge rod and the movable block is parallel to the hinge axis between the hinge rod and the buffer plate and extends horizontally. A third spring is provided between the two movable blocks. The third spring is always in a compressed state.

[0018] Preferably, a plurality of guide protrusions are fixedly provided on the fixed base, and the plurality of guide protrusions are arranged at equal intervals along the front-back direction. A limiting groove is provided on the connecting base to slide with the guide protrusions. The length direction of the limiting groove is parallel to the front-back direction. A fourth spring is provided between the connecting base and the guide protrusions. A fourth spring is provided on both sides of each guide protrusion along the front-back direction. The fourth spring is always in a compressed state.

[0019] The advantages of this invention compared to the prior art are:

[0020] This invention achieves the function of first-layer shock absorption of the storage tank when the tanker truck collides by working together with the movable frame and the buffer plate, and achieves the function of second-layer shock absorption of the storage tank when the tanker truck collides by working together with the connecting seat and the fixed seat, and achieves the function of forming a protective film to prevent leakage of the storage tank part subjected to rigid impact by the resin protective plate, thereby reducing the probability of damage to the storage tank when the tanker truck is rear-ended or rear-ended during transportation. Attached Figure Description

[0021] Figure 1 This is a three-dimensional schematic diagram showing the usage status of a leak prevention device for a hazardous chemical transport tanker.

[0022] Figure 2 This is a front view of the usage status of a leak prevention device for a hazardous chemical transport tanker.

[0023] Figure 3 A three-dimensional diagram of a leak-proof device for hazardous chemical transport tank trucks. Figure 1 .

[0024] Figure 4 A three-dimensional diagram of a leak-proof device for hazardous chemical transport tank trucks. Figure 2 .

[0025] Figure 5 yes Figure 4 A magnified view of part A in the diagram.

[0026] Figure 6 A three-dimensional diagram of a leak-proof device for hazardous chemical transport tank trucks. Figure 3 .

[0027] Figure 7 yes Figure 6 A magnified view of part B in the diagram.

[0028] Figure 8 This is a three-dimensional exploded view of a leak prevention device for hazardous chemical transport tank trucks.

[0029] Figure 9 yes Figure 8 A magnified view of part C in the diagram.

[0030] Figure 10 This is a three-dimensional schematic diagram of a shock-absorbing seat in a leak-proof device for a hazardous chemical transport tanker. Detailed Implementation

[0031] To further understand the features, technical means, and specific objectives and functions achieved by the present invention, the present invention will be described in further detail below with reference to the accompanying drawings and specific embodiments.

[0032] See Figures 1 to 5 As shown, a leak-proof device for a hazardous chemical transport tanker includes a vehicle body and a storage tank mounted on the vehicle body. The leak-proof device includes a fixed seat 1, a connecting seat 2, and a shock-absorbing seat 3. The fixed seat 1 is fixed to the vehicle body. The connecting seat 2 can move back and forth within a certain range along the front and rear directions of the vehicle body. There are two shock-absorbing seats 3, symmetrically arranged at the front and rear ends of the connecting seat 2. The shock-absorbing seats 3 can move back and forth relative to the connecting seat 2. The storage tank is mounted on the connecting seat 2. When the vehicle collides, the shock-absorbing seats 2 can buffer and protect the front and rear ends of the storage tank.

[0033] Each shock absorber 3 includes a movable frame 31, a buffer plate 32, and a resin protective plate 33. The movable frame 31 is slidably mounted on the end of the fixed base 1 along the front-rear direction. The buffer plate 32 is slidably mounted on the movable frame 31 along the front-rear direction and is closer to the storage tank than the movable frame 31. The resin protective plate 33 is mounted on the buffer plate 32 and is closer to the storage tank than the buffer plate 32. The plane of the resin protective plate 33 is perpendicular to the front-rear direction. When viewed along the front-rear direction, the resin protective plate 33 at least partially overlaps with the storage tank. When the storage tank moves back and forth, it can abut against the resin protective plate 33, thus protecting the storage tank. The buffer plate 32 also provides cushioning. A return spring (not shown) can be provided between the movable frame 31 and the fixed base 1. The return spring ensures that the movable frame 31 always tends to move away from the storage tank. When the vehicle is impacted in the front-rear direction, the shock absorber 3 provides multiple cushioning effects.

[0034] The connecting seat 2 is mounted on the fixed seat 1 via a limiting frame 26. The limiting frame 26 has a U-shaped structure with the opening facing downwards. Both ends of the limiting frame 26 are fixed to the fixed seat 1. The connecting seat 2 is located inside the U-shape of the U-shaped structure. The limiting frame 26 only allows the connecting seat 2 to move back and forth, but not up and down.

[0035] A wedge-shaped block 21 is provided on the connecting seat 2, and the wedge-shaped block 21 can move up and down. A fixing hole 11 is provided on the fixing seat 1 to cooperate with the wedge-shaped block 21. The wedge-shaped block 21 can be selectively inserted into the fixing hole 11. When the wedge-shaped block 21 is inserted into the fixing hole 11, the connecting seat 2 cannot move back and forth. When the wedge-shaped block 21 is disengaged from the fixing hole 11, the connecting seat 2 can move back and forth. Preferably, the number of wedge-shaped blocks 21 is even. A first spring 22 is provided between each wedge-shaped block 21 and the connecting seat 2. The upper end of the first spring 22 abuts against the connecting seat 2, and the lower end abuts against the wedge-shaped block 21. The first spring 22 is always in a compressed state so that the wedge-shaped block 21 can automatically insert into the fixing hole 11 when aligned with it and without external force.

[0036] Extending strips 311 are provided on the movable frame 31. When viewed along the front-rear direction, each extending strip 311 is aligned with a wedge block 21. As the extending strip 311 moves back and forth with the movable frame 31, it pushes the corresponding wedge block 21 upward, causing the wedge block 21 to disengage from the fixing hole 11. To facilitate the extending strip 311 pushing the wedge block 21 up, a first inclined surface is provided on the lower end of the wedge block 21 facing the extending strip 311. The first inclined surface gradually slopes away from the corresponding extending strip 311 from top to bottom. When the vehicle is impacted in the front-rear direction, the movable frame 31 moves towards the storage tank, and the extending strips 311 disengage the corresponding wedge block 21 from the fixing hole 11. The storage tank can then move back and forth. Specifically, when impacted from behind, the storage tank moves forward; when impacted from the front, the storage tank moves backward, further providing a cushioning effect.

[0037] See Figure 3 , Figure 5 , Figure 8 and Figure 10 As shown, the shock absorber seat 3 also includes a movable plate 34. The movable frame 31 is provided with a movable plate 34 at both ends along the width direction of the tank truck. When viewed along the width direction, the movable frame 31 is L-shaped. The movable frame 31 and the movable plates 34 on both sides form a bucket-shaped structure, which can surround the lower part of the front and rear ends of the storage tank and play a protective role.

[0038] The movable plate 34 can move back and forth along the width direction. Under normal circumstances, the movable plate 34 is furthest from the movable frame 31. When viewed along the front and back direction, the storage tank is located between the two movable plates 34. On the one hand, other vehicles can leave more space and reduce the possibility of collision with the storage tank. On the other hand, in the event of a minor collision with other vehicles, the vehicle will first come into contact with the movable plate 34, giving the driver some time to make timely adjustments.

[0039] See Figure 5 , Figure 8 and Figure 10 As shown, a guide protrusion 341 is fixedly provided on the side of the movable plate 34 facing the resin protection plate 33. The guide protrusion 341 is located on the opposite side of the storage tank relative to the resin protection plate 33. The guide protrusion 341 extends vertically. A second inclined surface is provided on the side of the guide protrusion 341 facing the resin protection plate 33. The second inclined surface gradually slopes away from the movable plate 34 and away from the resin protection plate 33. When the movable plate 34 moves towards the storage tank, the guide protrusion 341 can push the two ends of the resin protection plate 33 to bend towards the storage tank, further protecting the storage tank.

[0040] Preferably, each shock absorber 3 is provided with two extension strips 311, and each extension strip 311 is provided with a wedge plate 312. The wedge plate 312 can slide relative to the corresponding extension strip 311 along the width direction. The movable plate 34 is connected to the wedge plate 312. A second spring 313 is provided between the two movable plates 34 corresponding to the same shock absorber 3. The second spring 313 is always in a compressed state so that the movable plate 34 is always in the outermost position when it is not subjected to external force, and when it is subjected to external force, the movable plate 34 retracts inward.

[0041] Furthermore, a third inclined surface is provided on the outer side of the wedge plate 312 near the storage tank, and the third inclined surface gradually slopes outwards as it moves away from the storage tank. The cross-section of the fixed base 1 is U-shaped, with the opening of the U-shape facing upwards. The third inclined surface mates with the corresponding inner wall surface of the fixed base 1. When the shock-absorbing base 3 moves towards the storage tank, the wedge block 312 will drive the movable plate 34 to move under the cooperation of the third inclined surface and the fixed base 1. When the two movable plates 34 move towards the storage tank from the front-to-back direction and the width direction respectively, the resin protective plate 33 is forced to further wrap around the storage tank.

[0042] See Figure 3 and Figure 10 As shown, each shock absorber 3 also includes a movable block 35, a hinge rod 36, and a third elastic connector 37. The movable block 35 is slidably disposed on the side of the movable frame 31 facing the buffer plate 32. The sliding direction of the movable block 35 is parallel to the width direction. There are two movable blocks 35. One end of the hinge rod 36 is hinged to the movable block 35, and the other end of the hinge rod 36 is hinged to the buffer plate 32. The hinge axis between the hinge rod 36 and the movable block 35 is parallel to the hinge axis between the hinge rod 36 and the buffer plate 32. A third spring 37 is provided between the two movable blocks 35, and the third spring 37 is always in a compressed state.

[0043] See Figure 5 , Figure 8 and Figure 10 As shown, a plurality of guide protrusions 12 are fixedly provided on the fixed base 1. The plurality of guide protrusions 12 are arranged at equal intervals along the front-back direction. The connecting base 2 is provided with a limiting groove 23 that can slide with the guide protrusions 12. The length direction of the limiting groove 23 is parallel to the front-back direction. A fourth spring 24 is provided between the connecting base 2 and the guide protrusions 12. A fourth spring 24 is provided on both sides of each guide protrusion 12 along the front-back direction. The fourth spring 24 is always in a compressed state. When the connecting base 2 is not subjected to external force, it can be reset under the action of the fourth spring 24.

[0044] See Figure 8 and Figure 9As shown, the connecting seat 2 is equipped with a rolling roller 25. The axis of the roller 25 is parallel to the width direction of the vehicle body. There are at least six rollers 25, which are supported on the fixed seat 1. The rollers 25 reduce the friction between the connecting seat 2 and the fixed seat 1 when the vehicle body moves.

[0045] The leak prevention device also includes a humidity sensor and an alarm. The humidity sensor is fixedly mounted on the buffer plate 32 with its detection end facing the resin protection plate 33. The alarm is fixedly mounted on the tank truck. The humidity sensor and the alarm are connected by a signal. When a leak occurs, the humidity sensor can detect the humidity of the surrounding environment, and the alarm will sound an alarm based on the humidity detected by the humidity sensor.

[0046] The above embodiments only illustrate one or more implementations of the present invention, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the protection scope of the present invention. Therefore, the protection scope of this patent should be determined by the appended claims.

Claims

1. A leak-proof device for a hazardous chemical transport tanker truck, the hazardous chemical transport tanker truck comprising a vehicle body and a storage tank mounted on the vehicle body, characterized in that, The leak prevention device includes: Mounting bracket, fixed to the vehicle body; The connecting seat is capable of moving back and forth within a certain range along the front and rear direction of the vehicle body and is mounted on a fixed seat; the storage tank is mounted on the connecting seat. Two shock absorbers are symmetrically arranged at the front and rear ends of a connecting seat. The shock absorbers are movable back and forth relative to the connecting seat. Each shock absorber includes a movable frame, a buffer plate, and a resin protection plate. The movable frame is slidably arranged at the end of the fixed seat along the front and rear direction. The buffer plate is slidably arranged on the movable frame along the front and rear direction and is closer to the storage tank than the movable frame. The resin protection plate is arranged on the buffer plate and is closer to the storage tank than the buffer plate. The plane of the resin protection plate is perpendicular to the front and rear direction. When viewed along the front and rear direction, the resin protection plate at least partially coincides with the storage tank. When the storage tank moves back and forth, it can abut against the resin protection plate. The connecting seat is mounted on the fixed seat via a limiting frame. The limiting frame has a U-shaped structure with the opening facing downwards. Both ends of the limiting frame are fixed to the fixed seat, and the connecting seat is located inside the U-shape of the U-shaped structure. A wedge block is provided on the connecting seat, and the wedge block can move up and down. A fixing hole is provided on the fixing seat to cooperate with the wedge block. The wedge block can be selectively inserted into the fixing hole. A first spring is provided between each wedge block and the connecting seat. The upper end of the first spring abuts against the connecting seat, the lower end abuts against the wedge block, and the first spring is always in a compressed state. An extension strip is provided on the movable frame. When viewed along the front-back direction, each extension strip is aligned with a wedge block. The extension strip extends along the front-back direction, and when the extension strip moves back and forth with the movable frame, it can push the corresponding wedge block upward, causing the wedge block to disengage from the fixing hole; and / or, a first inclined surface is provided on the lower end of the wedge block and the side facing the extension strip. The first inclined surface gradually slopes away from the corresponding extension strip from top to bottom.

2. The leak-proof device for hazardous chemical transport tank trucks according to claim 1, characterized in that, The shock absorber also includes movable plates. The movable frame has a movable plate at each end along the width direction of the tanker. When viewed along the width direction, the movable frame is L-shaped. The movable frame and the movable plates on both sides form a bucket-shaped structure; and / or, the movable plates can move back and forth along the width direction.

3. A leak-proof device for hazardous chemical transport tank trucks according to claim 2, characterized in that, A guide protrusion is fixedly provided on the side of the movable plate facing the resin protection plate. The guide protrusion is located on the opposite side of the storage tank relative to the resin protection plate. The guide protrusion extends vertically. A second inclined surface is provided on the side of the guide protrusion facing the resin protection plate. The second inclined surface gradually slopes away from the resin protection plate along the direction away from the movable plate.

4. A leak-proof device for hazardous chemical transport tank trucks according to claim 3, characterized in that, Each shock absorber seat has two extended strips, and each extended strip has a wedge plate. The wedge plate can slide relative to the corresponding extended strip along the width direction. The movable plate is connected to the wedge plate. A second spring is provided between the two movable plates corresponding to the same shock absorber seat. The second spring is always in a compressed state.

5. A leak-proof device for hazardous chemical transport tank trucks according to claim 4, characterized in that, The wedge plate has a third inclined surface on the outer side of the end closest to the storage tank, and the third inclined surface gradually slopes outward as it moves away from the storage tank; the fixed base has a U-shaped cross-section with the opening of the U-shape facing upward, and the third inclined surface mates with the corresponding inner wall surface of the fixed base.

6. A leak-proof device for hazardous chemical transport tank trucks according to claim 5, characterized in that, Each shock absorber also includes a movable block, a hinge rod, and a third elastic connector. The movable block is slidably mounted on the side of the movable frame facing the buffer plate. The sliding direction of the movable block is parallel to the width direction. There are two movable blocks. One end of the hinge rod is hinged to the movable block, and the other end of the hinge rod is hinged to the buffer plate. The hinge axis between the hinge rod and the movable block is parallel to the hinge axis between the hinge rod and the buffer plate and extends horizontally. A third spring is provided between the two movable blocks. The third spring is always in a compressed state.

7. A leak-proof device for hazardous chemical transport tank trucks according to claim 6, characterized in that, Multiple guide protrusions are fixedly provided on the fixed base. The multiple guide protrusions are arranged at equal intervals along the front-back direction. The connecting base is provided with a limiting groove that can slide with the guide protrusions. The length direction of the limiting groove is parallel to the front-back direction. A fourth spring is provided between the connecting base and the guide protrusions. Each guide protrusion is provided with a fourth spring on both sides along the front-back direction. The fourth spring is always in a compressed state.

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