Vehicle-mounted steel tank sealing cover

Abstract

The utility model discloses a vehicle-mounted steel tank sealing cover, and relates to the technical field of steel tank sealing covers, the vehicle-mounted steel tank sealing cover comprises a manhole cover and a small cover movably connected to the top of the manhole cover, a limiting seat is fixedly connected to the top of the manhole cover, a rotating groove and a limiting groove which communicate with each other are formed in the limiting seat, a limiting rod is inserted into the rotating groove, and the limiting rod is movably connected to the limiting seat. An annular sliding groove and a transverse sliding groove which communicate with each other are formed in the surface of the limiting rod. A rotating groove is formed in a limiting seat, a limiting rod is inserted into the rotating groove, a password rotating disc is designed on the limiting rod, and a structure similar to a password lock is formed under the action that a sliding block protrusion is matched with an annular sliding groove and a transverse sliding groove in the limiting rod, so that a clamping block on a connecting rod is limited by the limiting rod; and when the small cover is locked, a key does not need to be used for unlocking, and the situation that the small cover cannot be opened in time due to the fact that the key is lost is prevented.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of steel tank covers, in particular to a vehicle-mounted steel tank cover. BACKGROUND

[0002] The vehicle-mounted steel tank generally refers to a container installed on a vehicle for storing compressed gas, and is commonly used for carrying spare gasoline, natural gas, liquefied petroleum gas and the like.

[0003] At present, the traditional vehicle-mounted steel tank is generally provided with a manhole cover during use, which is used for personnel access to the tank body, air permeation, air ventilation and emergency pressure relief, etc. At present, the traditional small cover of the manhole cover is generally locked on the manhole cover by using a safety cover. When being opened, a matched key, such as a house door key, needs to be used. In this case, the key is easy to be lost, and the manhole cover cannot be opened in time. CONTENT OF THE UTILITY MODEL

[0004] The application aims to provide a vehicle-mounted steel tank cover to solve the problems in the background technology.

[0005] To solve the above technical problems, the utility model provides the following technical scheme: a manhole cover and a small cover movably connected to the top of the manhole cover are included, and the top of the manhole cover is fixedly connected with a limiting seat;

[0006] The inside of the limiting seat is respectively provided with a rotating groove and a limiting groove in communication with each other, the inside of the rotating groove is inserted with a limiting rod, the surface of the limiting rod is respectively provided with an annular sliding groove and a transverse sliding groove in communication with each other, the surface of the limiting rod is sleeved with a sealing turntable, and the inside of the password turntable is assembled with a sliding block protrusion.

[0007] In a further embodiment, the inside of the limiting groove is symmetrically connected with a clamping block in sliding mode, and the surface of the small cover is provided with a clamping groove matched with the clamping block.

[0008] In a further embodiment, the inside of the limiting groove is provided with a connecting rod, both ends of the connecting rod are fixedly connected with the clamping block, and one end of the limiting rod penetrates into the inside of the limiting groove and is fixedly connected with the connecting rod.

[0009] In a further embodiment, the surface of the connecting rod is symmetrically assembled with a guide rod in sliding connection with the limiting seat, and the surface of the guide rod is sleeved with a return spring.

[0010] In a further embodiment, the top of the limiting seat is provided with a penetrating groove, the surface of the connecting rod is symmetrically fixedly connected with a moving block, and one end of the moving block penetrates into the outside of the limiting seat through the penetrating groove.

[0011] In further embodiments, the top of the manhole cover is equipped with an annular protrusion, and the bottom of the small cover is provided with an annular inner recess matched with the annular protrusion.

[0012] In further embodiments, the small cover is equipped with a breathing valve at the center thereof, and the top of the manhole cover is provided with a reserved mounting port.

[0013] Compared with the prior art, the manhole cover has the following beneficial effects:

[0014] The rotating groove is internally connected with the limiting rod, the password dial is designed on the limiting rod, the slider protrusion cooperates with the annular sliding groove and the transverse sliding groove on the limiting rod, a structure similar to a password lock is formed, the limiting rod limits the clamping block on the connecting rod, the clamping block limits the small cover, the small cover is locked, and a key is not needed for unlocking, and the small cover cannot be opened in time due to loss of the key. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 The figure is a structural schematic view of the embodiment of the application;

[0016] Figure 2 The figure is a structural schematic view of the manhole cover of the embodiment of the application;

[0017] Figure 3 The figure is a structural bottom view of the small cover of the embodiment of the application;

[0018] Figure 4 The figure is a structural sectional view of the limiting seat of the embodiment of the application;

[0019] Figure 5 The figure is a structural connection schematic view of the embodiment of the application;

[0020] Figure 6 The figure is a structural schematic view of the password dial of the embodiment of the application.

[0021] In the figure: 1, manhole cover; 2, small cover; 3, limiting seat; 4, rotating groove; 5, limiting groove; 6, limiting rod; 7, annular sliding groove; 8, transverse sliding groove; 9, password dial; 10, slider protrusion; 11, clamping block; 12, clamping groove; 13, connecting rod; 14, guide rod; 15, return spring; 16, through groove; 17, moving block; 18, annular protrusion; 19, annular inner recess; 20, breathing valve; 21, reserved mounting port. DETAILED DESCRIPTION

[0022] With reference to the drawings of the embodiments of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative efforts fall within the scope of the present application.

[0023] Embodiment 1

[0024] A vehicle-mounted steel tank sealing cover, comprising a manhole cover 1 and a small cover 2 movably connected on the top of the manhole cover 1, the top of the manhole cover 1 is fixedly connected with a limiting seat 3, as shown in Figure 1 、 Figure 2 、 Figure 3 and Figure 4 In the present application, the manhole cover 1 is installed on the opening on the top of the vehicle-mounted steel tank by bolts, which is used to seal the opening of the vehicle-mounted steel tank and can provide an opening for the staff to enter the inside of the vehicle-mounted steel tank. The small cover 2 is installed on the top of the manhole cover 1 and is mainly used for the staff to observe the inside of the vehicle-mounted steel tank after being opened. A breather valve 20 is installed on the top of the small cover 2, which is used for the ventilation of the vehicle-mounted steel tank, balancing the pressure in the tank, etc. A reserved mounting hole is formed on the top of the manhole cover 1, and the number of the reserved mounting hole is three, which is convenient for the installation of the oil gas recovery valve, the installation of the overflow probe rod and the installation of the liquid level gauge. The limiting seat 3 is on the top of the manhole cover 1 and is mainly used for the fixed limiting and locking of the small cover 2.

[0025] The inside of the limiting seat 3 is respectively provided with a rotating groove 4 and a limiting groove 5 which are in communication with each other. The rotating groove 4 is inserted with a limiting rod 6. The surface of the limiting rod 6 is respectively provided with an annular sliding groove 7 and a transverse sliding groove 8 which are in communication with each other. The surface of the limiting rod 6 is sleeved with a password turntable 9. The inside of the password turntable 9 is assembled with a sliding block protrusion 10, as shown in Figure 1 、 Figure 4 、 Figure 5 and Figure 6As shown, the rotating groove 4 is arranged in the inside of the limiting seat 3, for installing the limiting rod 6, the limiting rod 6 in the inside of the rotating groove 4 can move along the direction of the limiting groove 5, the password rotating disc 9 is sleeved on the surface of the limiting rod 6, the surface of the password rotating disc 9 is designed with password numbers, for marking the correct password when the user rotates the password rotating disc 9, the annular sliding groove 7 and the transverse sliding groove 8 are arranged on the limiting rod 6, and the annular sliding groove 7 and the transverse sliding groove 8 are communicated with each other, the sliding block protrusion 10 is assembled in the inside of the password rotating disc 9, the sliding block protrusion 10 is slidably connected with the annular sliding groove 7 and the transverse sliding groove 8, the number of the password rotating disc 9 is three, when the sliding block protrusions 10 in the three password rotating discs 9 are all in the transverse sliding groove 8, the password rotating disc 9 is not limited, and the limiting rod 6 can be moved, when the sliding block protrusions 10 in the three password rotating discs 9 are not in the transverse sliding groove 8 but in the annular sliding groove 7, the sliding block protrusion 10 and the annular sliding groove 7 form a block, the password rotating disc 9 limits the limiting rod 6, the limiting rod 6 cannot be moved, so that the clamping block 11 can be clamped in the clamping groove 12 of the small cover 2, without using the key, preventing the key from being lost, and causing the manhole cover 1 small cover 2 to be unable to be opened in time.

[0026] Further, the inside of the limiting groove 5 is symmetrically slidably connected with the clamping block 11, the surface of the small cover 2 is arranged with the clamping groove 12 for clamping the clamping block 11, the inside of the limiting groove 5 is provided with the connecting rod 13, both ends of the connecting rod 13 are fixedly connected with the clamping block 11, one end of the limiting rod 6 penetrates into the inside of the limiting groove 5 and is fixedly connected with the connecting rod 13, the surface of the connecting rod 13 is symmetrically assembled with the guide rod 14 slidably connected with the limiting seat 3, the surface of the guide rod 14 is sleeved with the reset spring 15, as Figure 3 and Figure 4 As shown, the clamping block 11 is designed in the inside of the limiting groove 5, the connecting rod 13 is also designed in the inside of the limiting groove 5, for connecting the clamping block 11, and one end of the limiting rod 6 penetrates into the inside of the limiting groove 5 and is fixedly connected with the connecting rod 13, the movement of the limiting rod 6 can drive the connecting rod 13 to move, and the two clamping blocks 11 are respectively installed at both ends of the connecting rod 13, when the connecting rod 13 moves, it can drive the clamping block 11 to retract into the inside of the limiting groove 5 or protrude from the limiting groove 5, when protruding from the limiting groove 5, the clamping block 11 is clamped into the clamping groove 12 on the small cover 2, so that the clamping block 11 limits the small cover 2, achieving the purpose of locking the small cover 2, on the contrary, when the clamping block 11 is retracted into the inside of the limiting groove 5, the small cover 2 loses the limitation, that is, it can be opened, the guide rod 14 is installed on the connecting rod 13, for limiting the movement of the connecting rod 13, the reset spring 15 is designed on the surface of the guide rod 14, which can provide the connecting rod 13 with a reverse elastic force, so that the connecting rod 13 drives the clamping block 11 to escape from the limiting groove 5, achieving the purpose of clamping the clamping groove 12 on the small cover 2.

[0027] More deeply, the top of the limiting seat 3 is provided with a through groove 16, the surface of the connecting rod 13 is symmetrically fixed with a moving block 17, one end of the moving block 17 penetrates through the through groove 16 to the outside of the limiting seat 3, as shown in Figure 1 And Figure 5 As shown in the figure, the through groove 16 is arranged on the top of the limiting seat 3, which is used to provide a passage for the moving block 17 to penetrate to the outside of the limiting seat 3, the moving block 17 is installed on the connecting rod 13, and the user can move the connecting rod 13 through the moving block 17, so that the connecting rod 13 drives the clamping block 11 to be separated from the clamping groove 12, thereby achieving the purpose of opening the small cover 2.

[0028] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and spirits of the utility model, and the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A closure for a steel tank on board a vehicle, comprising a manhole cover (1) and a small cover (2) movably connected to the top of the manhole cover (1), characterized in that: The top of the manhole cover (1) is fixedly connected with a limiting seat (3); The inner part of the limiting seat (3) is respectively provided with a rotating groove (4) and a limiting groove (5) in communication with each other, the inner part of the rotating groove (4) is inserted with a limiting rod (6), the surface of the limiting rod (6) is respectively provided with an annular sliding groove (7) and a transverse sliding groove (8) in communication with each other, the surface of the limiting rod (6) is sleeved with a password rotating disc (9), the inner part of the password rotating disc (9) is assembled with a sliding block (10).

2. A closure for a steel tank for use in a vehicle as claimed in claim 1, characterised in that: The inner part of the limiting groove (5) is symmetrically connected with a clamping block (11), the surface of the small cover (2) is provided with a clamping groove (12) clamped with the clamping block (11).

3. A closure for a steel cylinder as claimed in claim 2, wherein: The inner part of the limiting groove (5) is provided with a connecting rod (13), both ends of the connecting rod (13) are fixedly connected with the clamping block (11), one end of the limiting rod (6) penetrates into the inner part of the limiting groove (5) and is fixedly connected with the connecting rod (13).

4. A closure for a steel cylinder as claimed in claim 3, wherein: The surface of the connecting rod (13) is symmetrically assembled with a guide rod (14) slidably connected with the limiting seat (3), the surface of the guide rod (14) is sleeved with a return spring (15).

5. A closure for a steel cylinder as claimed in claim 3, wherein: The top of the limiting seat (3) is provided with a through groove (16), the surface of the connecting rod (13) is symmetrically fixedly connected with a moving block (17), one end of the moving block (17) penetrates to the outside of the limiting seat (3) through the through groove (16).

6. A closure for a steel cylinder as claimed in claim 1, wherein: The top of the manhole cover (1) is assembled with an annular protrusion (18), the bottom of the small cover (2) is provided with an annular inner recess (19) used in cooperation with the annular protrusion (18).

7. A closure for a steel cylinder as claimed in claim 1, wherein: The center of the small cover (2) is assembled with a breathing valve (20), the top of the manhole cover (1) is provided with a reserved mounting port (21).

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