Tank truck pressure-resistant rear lower half cover

Abstract

The utility model provides a kind of tank truck pressure-resistant rear lower half cover, it is related to tank truck rear cover equipment technical field. Including tank body flange assembly, the outside of tank body flange assembly is rotatably connected with cover flange assembly, by the utility model by setting with the structure of larger tank body diameter can be adapted, and can guarantee pressure-resistant and good sealing, by multiple equipment combination is realized: the lower half cover structure of the design using pressure-resistant design, realize without increasing sealing area, larger tank body diameter can be adapted;Adopt multiple point hydraulic locking, manual locking guarantee tank still can guarantee sealing and safety under larger pressure;The specific lower half cover external shape, pressure-resistant, sealing, maximum reduce discharge resistance when self-unloading can be met;Rear half cover uses special shape head and flange welding, overall strength is high, light in weight, can be flexibly adapted flange and head according to pressure-resistant size.

Description

Technical Field

[0001] This utility model relates to the technical field of tank truck rear cover equipment, and in particular to a pressure-resistant lower half cover for tank trucks. Background Technology

[0002] Tank trucks, as core equipment for road transportation of liquid or gaseous materials, are widely used in industrial fields such as chemical, petroleum, and food. The rear cover, serving as a crucial sealing and loading / unloading channel for the tank, directly affects transportation efficiency, material quality, and public safety due to its sealing reliability, ease of opening and closing operation, and overall safety.

[0003] In practical applications, the rear half cover of tank trucks commonly uses a purely manual bolt tightening or a single hydraulic locking structure, which presents the following problems in practical use:

[0004] Tanker truck rear covers are generally either full-diameter rear covers or small bottom covers. Full-diameter rear covers have a large sealing area, so the tank diameter cannot be made too large (generally no larger than 1800mm); small rear covers (no larger than 900mm in diameter) are less efficient for self-unloading and are generally used as maintenance access points or in emergency situations.

[0005] Traditional manual bolt tightening methods rely entirely on the operator's experience and physical strength to ensure consistent tightening force. Uneven tightening force or fatigue and negligence can easily lead to insufficient compression of the sealing ring, which may cause material leakage under the continuous vibration of long-distance transportation and pressure fluctuations inside the tank.

[0006] While a single hydraulic locking system improves automation, its safety is highly dependent on the integrity of the hydraulic system. Once a malfunction occurs, the locking function will be completely lost, posing a huge safety hazard. There is a lack of mechanical locking backup devices that can still work reliably in emergency situations or after system failure.

[0007] Therefore, this utility model provides a pressure-resistant lower half cover for tank trucks. Utility Model Content

[0008] The purpose of this invention is to overcome the shortcomings of the existing technology and provide a pressure-resistant lower half cover for tank trucks.

[0009] To achieve the above objectives, this utility model adopts the following technical solution: a pressure-resistant lower half cover for tank trucks, including a tank flange assembly.

[0010] A cover flange assembly is rotatably connected to the outside of the tank flange assembly. Two symmetrically distributed tilting seat assemblies are fixedly connected to the outside of the cover flange assembly. Two opening cylinders extending into the corresponding tilting seat assemblies are installed on one side of the tank flange assembly. The tank flange assembly adjusts the opening and closing state of the cover flange assembly through the opening cylinders, thereby realizing the rotational movement of the cover flange assembly on the outside of the tank flange assembly.

[0011] Sealing rings are installed at the connection points of the tank flange assembly and the cover flange assembly to seal the connection. Hydraulic locking assemblies and manual locking assemblies are installed at equal intervals on the outer side of the connection points, with the hydraulic and manual locking assemblies staggered. Each hydraulic locking assembly contains a locking cylinder. The manual locking assembly is used to manually lock the tank flange assembly and the cover flange assembly, while the locking cylinders and hydraulic locking assemblies are used to automatically lock the tank flange assembly and the cover flange assembly, achieving a dual locking effect and improving the stability of the equipment connection.

[0012] The closing and locking process: Initially, the hydraulic locking assembly and the manual locking assembly are in the unlocked state. At this time, the opening cylinder extends, and the cover flange assembly rotates to the closed position through the flip seat assembly. The sealing ring is confirmed to be pressed in place. The locking cylinder extends, and the guide bevel of the locking tongue at the front end of the cylinder enters the locking hole of the hydraulic locking assembly on the cover flange assembly. As the locking cylinder continues to extend, the locking tongue bevel at its end gradually presses the cover flange assembly until the locking tongue is fully inserted into the straight face for self-locking. The cover flange assembly and the tank flange assembly fit tightly together, and the sealing ring is pressed to achieve the rear cover closing and locking seal. The manual rotation of the manual locking assembly assists in pressing the rear cover to further ensure the rear cover seal.

[0013] In a preferred embodiment, a first locking clamp is fixedly connected to all four sides of the cover flange assembly and to the outside of the manual locking assembly. Each of the first locking clamps has a threaded first positioning bolt for use with the corresponding manual locking assembly's limiting function. The outer side of the tank flange assembly has equidistant second locking clamps for use with the corresponding manual locking assembly. Each of the second locking clamps has two symmetrically distributed mounting slots inside. Both sides of the manual locking assembly, away from the first locking clamp, have symmetrically distributed positioning rods extending into the corresponding mounting slots, facilitating the insertion of the positioning rods into the corresponding second locking clamps to achieve manual installation and locking.

[0014] In a preferred embodiment, each of the hydraulic locking assemblies is internally fixedly connected to a locking cylinder. The outer side of the tank flange assembly is fixedly connected to equidistant third locking plates that are used in conjunction with the corresponding locking cylinders. The third locking plates and the first locking plates are staggered. Each of the third locking plates has a positioning plate installed inside, and each positioning plate has a slot for use with the locking cylinder. The outer side of each third locking plate is threaded with a third positioning bolt for limiting the position of the corresponding positioning plate, ensuring the locking cylinder... The output end can extend into the corresponding slot to perform a hydraulic locking operation. A positioning clamp is fixedly connected to the outside of the tank flange assembly and the outside of the two opening cylinders. The outer side of the positioning clamp is threaded with a second positioning bolt for limiting the rotation of the opening cylinder inside the positioning clamp. A connecting rod is provided inside the flipping seat assembly. The output end of the opening cylinder is rotatably connected to the corresponding connecting rod. By operating the corresponding opening cylinder, the corresponding connecting rod is driven to rotate inside the flipping seat assembly, thereby automatically opening the cover flange assembly.

[0015] In a preferred embodiment, the inner wall of the tank flange assembly is provided with a main control board, and a control chip is fixedly connected to the outer side of the main control board. The opening cylinder and the locking cylinder are both electrically connected to the control chip. The control chip is used to control the operation of the opening cylinder and the locking cylinder, thereby realizing unified management of the electrical equipment.

[0016] In a preferred embodiment, the tank flange assembly has a first inner cavity, and the cover flange assembly has a second inner cavity. By having the tank flange assembly inside the tank flange assembly and the cover flange assembly inside the second inner cavity, the internal equipment can be installed normally, and the cover flange assembly can be aligned with the tank flange assembly for auxiliary connection.

[0017] Compared with the prior art, the advantages and positive effects of this utility model are as follows:

[0018] This utility model achieves its purpose through a combination of multiple devices by setting up a structure that can accommodate larger tank diameters while ensuring good pressure resistance and sealing.

[0019] 1. This design adopts a pressure-resistant lower half-cover structure, which can accommodate larger tank diameters without increasing the sealing area;

[0020] 2. Multi-point hydraulic locking and manual locking are used to ensure that the tank can still be sealed and safe under high pressure.

[0021] 3. The unique shape of the lower half cover satisfies the requirements of pressure resistance, sealing performance, and minimizes discharge resistance during self-unloading;

[0022] 4. The rear cover adopts a special-shaped end cap welded to the flange, which has high overall strength and light weight, and can be flexibly adapted to the flange and end cap according to the pressure resistance. Attached Figure Description

[0023] Figure 1 A schematic diagram of the closed state of the overall structure of the lower half cover of a tank truck after pressure resistance, provided by this utility model. Figure 1 ;

[0024] Figure 2 A schematic diagram of the closed state of the overall structure of the lower half cover of a tank truck after pressure resistance, provided by this utility model. Figure 2 ;

[0025] Figure 3 A schematic diagram of the closed state of the overall structure of the lower half cover of a tank truck after pressure resistance, provided by this utility model. Figure 3 ;

[0026] Figure 4 A schematic diagram of the overall structure of the lower half cover of a tank truck after pressure resistance, provided by this utility model, in the open state. Figure 1 ;

[0027] Figure 5 A schematic diagram of the overall structure of the lower half cover of a tank truck after pressure resistance, provided by this utility model, in the open state. Figure 2 ;

[0028] Figure 6 This utility model provides an attachment for the pressure-resistant lower half cover of a tank truck. Figure 5 A magnified schematic diagram of the structure at point A in the diagram.

[0029] Legend:

[0030] 1. Tank flange assembly; 11. First inner cavity;

[0031] 2. Flange assembly; 21. Second inner cavity;

[0032] 3. Flip-up seat assembly;

[0033] 4. Hydraulic locking assembly;

[0034] 5. Manual locking assembly; 51. First locking clamp; 52. First positioning bolt; 53. Mounting slot; 54. Positioning rod; 55. Second locking clamp;

[0035] 6. Opening cylinder; 61. Positioning clamp; 62. Second positioning bolt;

[0036] 7. Locking cylinder; 71. Third positioning bolt; 72. Slot; 73. Positioning plate; 74. Third locking clamp;

[0037] 8. Sealing ring. Detailed Implementation

[0038] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0039] like Figures 1-6 As shown, this embodiment provides a technical solution: a tank truck pressure-resistant lower half cover, including a tank flange assembly 1, a cover flange assembly 2 rotatably connected to the outside of the tank flange assembly 1, two symmetrically distributed flipping seat assemblies 3 fixedly connected to the outside of the cover flange assembly 2, and two cover opening cylinders 6 extending into the corresponding flipping seat assemblies 3 installed on one side of the tank flange assembly 1. The tank flange assembly 1 adjusts the opening and closing state of the cover flange assembly 2 through the cover opening cylinders 6, thereby realizing the rotational movement of the cover flange assembly 2 on the outside of the tank flange assembly 1;

[0040] In this design, sealing rings 8 are installed at the connection points of the tank flange assembly 1 and the cover flange assembly 2. The sealing rings 8 provide a seal when the tank flange assembly 1 and the cover flange assembly 2 are connected. Hydraulic locking assemblies 4 and manual locking assemblies 5 are installed at equal intervals on the outside of the connection points of the tank flange assembly 1 and the cover flange assembly 2. The hydraulic locking assemblies 4 and the manual locking assemblies 5 are staggered. Each hydraulic locking assembly 4 is equipped with a locking cylinder 7. The manual locking assembly 5 is used to manually lock the tank flange assembly 1 and the cover flange assembly 2. The locking cylinder 7 and the hydraulic locking assembly 4 are used to automatically lock the tank flange assembly 1 and the cover flange assembly 2, achieving a double locking effect and improving the stability of the equipment connection.

[0041] Going a step further, such as Figures 1-6 As shown: In this scheme, the first locking clamp 51 is fixedly connected to all four sides of the cover flange assembly 2 and to the outside of the manual locking assembly 5. The outer side of the first locking clamp 51 is threaded with the first positioning bolt 52 for use in matching the limit of the manual locking assembly 5.

[0042] In this design, the outer side of the tank flange assembly 1 is fixedly connected with a second locking clamp 53 that is equidistant and used in conjunction with the corresponding manual locking assembly 5. The interior of each of the second locking clamps 53 has two symmetrically distributed mounting slots 55. Both sides of the manual locking assembly 5, and the side away from the first locking clamp 51, are fixedly connected with symmetrically distributed positioning rods 54 that extend into the corresponding mounting slots 55, so that the positioning rods 54 can be easily inserted into the corresponding second locking clamps 53 to achieve the manual installation and locking effect.

[0043] Going a step further, such as Figures 1-5 As shown: In this scheme, the hydraulic locking assembly 4 is fixedly connected to a locking cylinder 7 inside. The outer side of the tank flange assembly 1 is fixedly connected to a third locking clamp 74 that is equidistant and used to cooperate with the corresponding locking cylinder 7. The third locking clamp 74 and the first locking clamp 51 are staggered. The third locking clamp 74 is installed inside a positioning plate 73. The positioning plate 73 is provided with a slot 72 for use with the locking cylinder 7. The outer side of the third locking clamp 74 is threaded with a third positioning bolt 71 for limiting the corresponding positioning plate 73, ensuring that the output end of the locking cylinder 7 can extend into the corresponding slot 72 to perform hydraulic locking operation.

[0044] Going a step further, such as Figures 1-6 As shown, in this scheme, a positioning clamp 61 is fixedly connected to the outer side of the tank flange assembly 1 and to the outer side of the two opening cylinders 6. The outer side of the positioning clamp 61 is threaded with a second positioning bolt 62 for limiting the rotation of the opening cylinder 6 inside the positioning clamp 61. The inside of the tilting seat assembly 3 is provided with a connecting rod. The output end of the opening cylinder 6 is rotatably connected to the corresponding connecting rod. By operating the corresponding opening cylinder 6, the corresponding connecting rod is driven to rotate inside the tilting seat assembly 3, thereby automatically opening the cover flange assembly 2.

[0045] In this scheme, the inner wall of the tank flange assembly 1 is equipped with a main control board, and a control chip is fixedly connected to the outer side of the main control board. The opening cylinder 6 and the locking cylinder 7 are both electrically connected to the control chip. The control chip is used to control the operation of the opening cylinder 6 and the locking cylinder 7, thereby realizing the unified management of electrical equipment.

[0046] Going a step further, such as Figures 1-5 As shown, in this scheme, the tank flange assembly 1 has a first inner cavity 11 inside, and the cover flange assembly 2 has a second inner cavity 21 inside. By having the tank flange assembly 1 inside and the cover flange assembly 2 having a second inner cavity 21 inside, the internal equipment can be installed normally, and the cover flange assembly 2 can be aligned with the tank flange assembly 1 for auxiliary connection.

[0047] Working principle:

[0048] like Figures 1-6 As shown:

[0049] The tank flange assembly 1 adjusts the opening and closing state of the cover flange assembly 2 via the cover opening cylinder 6, thereby enabling the cover flange assembly 2 to rotate outside the tank flange assembly 1. The hydraulic locking assembly 4 and the manual locking assembly 5 are staggered. The manual locking assembly 5 is used to manually lock the tank flange assembly 1 and the cover flange assembly 2, while the locking cylinder 7 and the hydraulic locking assembly 4 are used to automatically lock the tank flange assembly 1 and the cover flange assembly 2, achieving a double locking effect and improving the stability of the equipment connection. Symmetrically distributed positioning rods 54 extending into the corresponding mounting grooves 55 are fixedly connected to both sides of the manual locking assembly 5, on the side furthest from the first locking clamp 51. This facilitates the insertion of the positioning rods 54 into the corresponding second locking clamp 53 for manual installation and locking. The outer side of the third locking clamp 74... The side is threaded with a third positioning bolt 71 for use with the corresponding positioning plate 73 for limiting, ensuring that the output end of the locking cylinder 7 can extend into the corresponding slot 72 for hydraulic locking. The inside of the flipping seat assembly 3 is provided with a connecting rod. The output end of the cover opening cylinder 6 is rotatably connected to the corresponding connecting rod. By operating the corresponding cover opening cylinder 6, the corresponding connecting rod is driven to rotate inside the flipping seat assembly 3, thereby automatically opening the cover flange assembly 2. The control chip is used to control the operation of the cover opening cylinder 6 and the locking cylinder 7, realizing unified management of electrical equipment. The tank flange assembly 1 is opened inside the tank flange assembly 1, and the cover flange assembly 2 is opened inside the second inner cavity 21 to facilitate the normal installation of internal equipment. At the same time, it is convenient to align the cover flange assembly 2 with the tank flange assembly 1 for auxiliary connection.

[0050] The closing and locking process: In the initial state, the hydraulic locking assembly 4 and the manual locking assembly 5 are in the unlocked state, that is, the locking cylinder 7 is retracted into place and the manual locking assembly 5 is unscrewed. At this time, the opening cylinder 6 is extended, and the cover flange assembly 2 is rotated to the closed position through the flip seat assembly 3. The sealing ring 8 is confirmed to be pressed in place. The locking cylinder 7 is extended. As the locking cylinder 7 extends, the inclined surface of the locking tongue at its end gradually presses the cover flange assembly 2 until the locking tongue is fully inserted into the straight surface for self-locking. The cover flange assembly 2 and the tank flange assembly 1 are tightly fitted. The sealing ring 8 is pressed to achieve the closing and locking seal of the rear cover. The manual locking assembly 5 is manually adjusted to assist in pressing the rear cover to further ensure the seal of the rear cover.

[0051] Unlocking and opening process: Balance the pressure inside the tank with the atmosphere, manually unscrew the manual locking assembly 5 and release it to release the manual lock; operate the locking cylinder 7 to fully retract and unlock the hydraulic lock; operate the opening cylinder 6 to retract, and the cover flange assembly 2 rotates to the fully open position through the flip seat assembly 3 to complete the opening operation.

[0052] This utility model achieves its purpose through a combination of multiple devices by setting up a structure that can accommodate larger tank diameters while ensuring good pressure resistance and sealing.

[0053] 1. This design adopts a pressure-resistant lower half-cover structure, which can accommodate larger tank diameters without increasing the sealing area;

[0054] 2. Multi-point hydraulic locking and manual locking are used to ensure that the tank can still be sealed and safe under high pressure.

[0055] 3. The unique shape of the lower half cover satisfies the requirements of pressure resistance, sealing performance, and minimizes discharge resistance during self-unloading;

[0056] 4. The rear cover adopts a special-shaped end cap welded to the flange, which has high overall strength and light weight, and can be flexibly adapted to the flange and end cap according to the pressure resistance.

[0057] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the protection scope of the technical solution of the present utility model.

Claims

1. A pressure-resistant lower half cover for a tank truck, comprising a tank flange assembly (1), characterized in that, The outer side of the tank flange assembly (1) is rotatably connected to the cover flange assembly (2), and the outer side of the cover flange assembly (2) is fixedly connected to two symmetrically distributed flip seat assemblies (3). Two opening cylinders (6) extending into the corresponding flip seat assembly (3) are installed on one side of the tank flange assembly (1). A sealing ring (8) is installed at the connection between the tank flange assembly (1) and the cover flange assembly (2). Hydraulic locking assemblies (4) and manual locking assemblies (5) are installed at equal intervals on the outside of the connection between the tank flange assembly (1) and the cover flange assembly (2). The hydraulic locking assemblies (4) and manual locking assemblies (5) are staggered. Each hydraulic locking assembly (4) is equipped with a locking cylinder (7). The manual locking assembly (5) is used to manually lock the tank flange assembly (1) and the cover flange assembly (2). The locking cylinder (7) and the hydraulic locking assembly (4) are used to automatically lock the tank flange assembly (1) and the cover flange assembly (2).

2. The lower half cover of the tank truck with pressure resistance according to claim 1, characterized in that: The cover flange assembly (2) is fixedly connected with a first locking plate (51) around its perimeter and on the outside of the manual locking assembly (5). The outer side of the first locking plate (51) is threaded with a first positioning bolt (52) for use in limiting the corresponding manual locking assembly (5).

3. The lower half cover of the tank truck with pressure resistance according to claim 1, characterized in that: The outer side of the tank flange assembly (1) is fixedly connected with a second locking plate (53) that is equidistant and used in conjunction with the corresponding manual locking assembly (5). The second locking plate (53) has two symmetrically distributed mounting slots (55) inside.

4. The lower half cover of the tank truck with pressure resistance according to claim 3, characterized in that: Both sides of the manual locking assembly (5) and the side away from the first locking clamp (51) are fixedly connected with symmetrically distributed positioning rods (54) that extend into the corresponding mounting groove (55).

5. The lower half cover of the tank truck with pressure resistance according to claim 3, characterized in that: The hydraulic locking assembly (4) is fixedly connected with locking cylinders (7), and the outer side of the tank flange assembly (1) is fixedly connected with third locking plates (74) that are equidistant and used in conjunction with the corresponding locking cylinders (7). The third locking plates (74) are all equipped with positioning plates (73).

6. The lower half cover of the tank truck with pressure resistance according to claim 5, characterized in that: The positioning plates (73) are all provided with slots (72) for use with locking cylinders (7), and the outer sides of the third locking plates (74) are all threaded with third positioning bolts (71) for use with the corresponding positioning plates (73) for positioning.

7. The lower half cover of the tank truck with pressure resistance according to claim 4, characterized in that: A positioning clamp (61) is fixedly connected to the outside of the tank flange assembly (1) and to the outside of the two opening cylinders (6). The outer side of the positioning clamp (61) is threaded with a second positioning bolt (62) for limiting the rotation of the opening cylinder (6) inside the positioning clamp (61).

8. The lower half cover of the tank truck with pressure resistance according to claim 3, characterized in that: The inside of the flipping seat assembly (3) is provided with a connecting rod, and the output end of the cover opening cylinder (6) is rotatably connected to the corresponding connecting rod.

9. The lower half cover of the tank truck with pressure resistance according to claim 1, characterized in that: The inner wall of the tank flange assembly (1) is provided with a main control board, and a control chip is fixedly connected to the outer side of the main control board. The opening cylinder (6) and the locking cylinder (7) are both electrically connected to the control chip.

10. The lower half cover of the tank truck with pressure resistance according to claim 6, characterized in that: The tank flange assembly (1) has a first inner cavity (11) inside, and the cover flange assembly (2) has a second inner cavity (21) inside.

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