Protective structure for urea tank
By fixing the rotating part of the urea tank protective plate to the vertical surface in front of the counterweight, and by using a flexible protective baffle, a pull rod assembly, and a magnetic structure, the problem of the protective plate being unable to open due to soil accumulation is solved, achieving stable opening and sealing of the protective plate and extending its service life.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHANDONG LINGONG CONSTR MACHINERY CO LTD
- Filing Date
- 2025-07-28
- Publication Date
- 2026-07-24
AI Technical Summary
The hinges of traditional urea tank protective panels are placed horizontally, making them prone to accumulating dirt and debris, which can prevent the protective panels from opening properly or even cause them to rust and become damaged, thus affecting the protective effect of the urea tank.
The upper protective plate is fixed to the front vertical surface of the counterweight by a rotating component and covered by a flexible protective baffle. Combined with the tie rod assembly and magnetic structure, the protective plate can be opened smoothly to avoid the accumulation of dirt, and the sealing strip can be used to ensure airtightness.
The protective plate can be opened smoothly without affecting urea filling and maintenance, extending the service life of the protective plate, preventing hinge corrosion and detachment, and ensuring effective protection of the urea tank.
Smart Images

Figure CN224550210U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of engineering machinery, and more specifically, to a protective structure for a urea tank. Background Technology
[0002] Currently, common urea tank protective plates are used to protect urea tanks. Traditional urea tank protective plates are closed when the forklift is working and open when urea needs to be added.
[0003] In this type of urea tank protection structure, the hinges are fixed to the protective plate and located on the upper surface of the counterweight. Because the hinges are placed horizontally, mud or other debris kicked up by the rotating tires when the vehicle is operating easily falls near the hinges. If not cleaned for a long time or if rainwater wets and the mud solidifies, it directly affects the normal use of the protective plate. The protective plate may become unable to open, or the hinges may rust and become damaged, causing the protective plate to fall off and lose its protective function for the urea tank. Utility Model Content
[0004] The purpose of this utility model is to provide a protective structure for a urea tank, wherein the upper protective plate is fixed to the front vertical surface of the counterweight by a rotating component, and the rotating component is shielded by a flexible protective baffle. When the vehicle is working, the mud kicked up by the wheels will not accumulate around the rotating component, and the upper protective plate can be opened smoothly without affecting urea filling and maintenance.
[0005] This utility model is achieved through the following technical solution:
[0006] A protective structure for a urea tank includes a lower protective plate and an upper protective plate. A pull rod assembly is provided between the lower and upper protective plates. The mounting end of the upper protective plate is mounted on the front vertical surface of a counterweight via a rotating component. A flexible protective baffle is provided on the outer side of the mounting end of the upper protective plate to block at least a portion of the rotating component. The pull rod assembly includes a limiting plate and a pull rod. One end of the pull rod is hinged to one of the cover plate of the upper protective plate and the lower protective plate, and the other end of the pull rod is slidably disposed in the limiting groove of the limiting plate.
[0007] Furthermore, the cover plate is magnetically attached to the lower protective plate.
[0008] Furthermore, the magnetic attraction structure includes a fixing block and a magnetic block, the fixing block being fixed to the fixing block on the lower protective plate, and the magnetic block being installed on the fixing block.
[0009] Furthermore, a sealing strip is provided at the opening of the lower protective plate.
[0010] Furthermore, a fixed bending plate is welded onto the cover plate, and a connecting seat is provided on the fixed bending plate. The connecting seat passes through one end of the pull rod, and a fixing member II is provided at the end of the connecting seat. One end of the pull rod is limited on the connecting seat by the fixed bending plate and the fixing member II. A pin is welded onto the other end of the pull rod, and the pin is slidably disposed in the limiting groove.
[0011] Furthermore, both ends of the limiting groove are provided with arc-shaped openings, and the pin is located in the arc-shaped openings to lock the position of the pull rod.
[0012] Furthermore, the fastener II includes a washer and a bolt II, the bolt II passing through the washer and threadedly connected to the connecting seat.
[0013] Furthermore, the flexible protective baffle is a rubber sheet, which is installed on the mounting end of the upper protective plate by fastener III.
[0014] Furthermore, the cover plate is provided with a handle.
[0015] Furthermore, the rotating component is a hinge, with one end of the hinge mounted on the mounting end of the upper protective plate and the other end of the hinge mounted on the front vertical surface of the counterweight.
[0016] Compared with the prior art, the beneficial effects of this utility model are:
[0017] 1. The upper protective plate is fixed to the front vertical surface of the counterweight by hinges, and the hinges are covered by rubber plates. When the vehicle is working, the mud kicked up by the wheels will not accumulate around the hinges. The upper protective plate can be opened smoothly without affecting urea filling and maintenance.
[0018] 2. The upper protective plate is limited and secured by the pull rod assembly, and then attracted by the magnet, in conjunction with the sealing strip to ensure the airtightness of the upper protective plate. Attached Figure Description
[0019] Figure 1 This is a schematic diagram of the protective structure of the urea tank of this utility model;
[0020] Figure 2 This is a partial schematic diagram of the urea tank protective structure of this utility model;
[0021] Figure 3 This is an installation diagram of the urea tank protective structure of this utility model;
[0022] Figure 4 This is a schematic diagram of the upper protective plate of the urea tank protective structure of this utility model when it is opened.
[0023] In the diagram: 1. Lower protective plate; 2. Tie rod assembly; 3. Upper protective plate; 4. Front vertical surface; 5. Fixing block; 6. Magnetic block; 7. Sealing strip; 8. Tie rod; 9. Fixing bend plate; 10. Connecting seat; 11. Handle; 12. Cover plate; 13. Gasket; 14. Bolt II; 15. Hinge; 16. Screw; 17. Rubber plate; 18. Pin; 19. Limiting plate; 20. Counterweight. Detailed Implementation
[0024] The present invention will be further described below with reference to the accompanying drawings.
[0025] like Figure 1 – Figure 4 As shown in the embodiment: A protective structure for a urea tank includes a lower protective plate 1 and an upper protective plate 3. A pull rod assembly 2 is provided between the lower protective plate 1 and the upper protective plate 3. The mounting end of the upper protective plate 3 is mounted on the front vertical surface 4 of the counterweight 20 via a rotating component. A flexible protective baffle is provided on the outer side of the mounting end of the upper protective plate 3 to block at least part of the rotating component. The pull rod assembly 2 includes a limiting plate 19 and a pull rod 8. One end of the pull rod 8 is hinged to the cover plate 12 of the upper protective plate 3. The limiting plate 19 is provided on the lower protective plate 1. The other end of the pull rod 8 is slidably disposed in the limiting groove.
[0026] Specifically, the upper protective plate 3 is fixed to the front vertical surface 4 of the counterweight 20 by a rotating component, and the rotating component is shielded by a flexible protective baffle. When the vehicle is working, the mud kicked up by the wheels will not accumulate around the rotating component, and the upper protective plate 3 can be opened smoothly without affecting urea filling and maintenance. The tie rod assembly 2 can ensure the stability of the upper protective plate 3 when it is opened, so that the upper protective plate 3 can be opened from the back to the front.
[0027] In this embodiment, the upper protective plate 3 has a closed state that covers the lower protective plate 1 and an open state that is open relative to the lower protective plate 1. When the upper protective plate 3 is in the open state, urea is added to the urea tank below the lower protective plate 1 through the opening of the lower protective plate 1.
[0028] In this embodiment, the opening angle of the upper protective plate is greater than 90° and less than or equal to 180°. Under the action of gravity and the pull rod, the upper protective plate will not shake, ensuring that the upper protective plate can be more stable in the open state.
[0029] For example, the opening angle of the upper protective plate is 100°, 110°, 120°, or 130°. Preferably, the opening angle of the upper protective plate is 110°.
[0030] In this embodiment, the limiting plate 19 is located at the lower end of the opening of the lower protective plate 1. The lower end of the opening of the lower protective plate 1 has a certain space, which facilitates the arrangement of the limiting plate in the space and reduces the installation difficulty.
[0031] It is understood that, in the embodiment not shown in the figure, the limiting plate 19 can also be provided on the cover plate 12. In this case, one end of the pull rod is hinged to the lower protective plate 1, and the other end of the pull rod 8 is slidably provided in the limiting groove of the limiting plate 19 on the cover plate 12.
[0032] In this embodiment, the cover plate 12 is magnetically attached to the lower protective plate 1 by a magnetic structure; the magnetic structure includes a welding fixing block 5 and a magnetic block 6, the fixing block 5 is fixed to the lower protective plate 1, and the magnetic block 6 is installed on the fixing block 5.
[0033] Specifically, the magnetic block can be a magnet or other metal containing magnetic materials. The magnetic block can firmly attach the upper protective plate 3 to the lower protective plate 1, which can ensure that the cover will not vibrate due to vehicle movement after it is closed, and can also ensure the sealing of the protective plate in the closed state.
[0034] In this embodiment, the magnetic block 6 is mounted on the fixing block using fasteners such as bolts I. The fixing block can be fixed to the lower protective plate by means of bonding or welding.
[0035] In this embodiment, a sealing strip 7 is provided at the opening of the lower protective plate 1.
[0036] Specifically, the sealing strip 7 can be replaced by sealing strips, sealing rubber rings, or other components with sealing functions, which can prevent dirt from entering the urea tank.
[0037] In this embodiment, a fixed bending plate 9 is welded onto the cover plate 12, and a connecting seat 10 is provided on the fixed bending plate 9. The connecting seat 10 passes through one end of the pull rod 8, and a fixing member II is provided at the end of the connecting seat 10. One end of the pull rod 8 is limited on the connecting seat 10 by the fixed bending plate 9 and the fixing member II. A pin 18 is welded onto the other end of the pull rod 8, and the pin 18 is slidably disposed in the limiting groove.
[0038] Specifically, the front end of the pull rod 8, the connecting seat 10, can rotate within the opening of the fixed bending plate 9 to achieve the hinge function, and the rear end of the pull rod 8 slides within the limiting groove through the pin 18 to achieve the limiting of opening and closing.
[0039] In this embodiment, both ends of the limiting groove are provided with arc-shaped openings, and the pin 18 is located in the arc-shaped openings to lock the position of the pull rod 8.
[0040] Specifically, the arc-shaped opening of the limiting groove can limit the pin 18 at the starting and ending positions, making the upper limit plate more stable in the open or closed state.
[0041] In this embodiment, the fixing component II includes a washer 13 and a bolt II 14, the bolt II 14 passing through the washer 13 and threadedly connected to the connecting seat 10. The washer 13 and the fixing bend 9 limit the pull rod to prevent it from slipping off the connecting seat.
[0042] In this embodiment, the flexible protective baffle is a rubber plate 17, which is installed on the mounting end of the upper protective plate 3 by a fastener III; the fastener III includes a pressure plate and a bolt III, and the rubber plate 17 is installed on the mounting end of the upper protective plate 3 by the pressure plate and the bolt III.
[0043] Specifically, the flexible protective baffle is made of rubber or plastic and other flexible folding plates to bend and protect the mounting end of the upper protective plate 3 and the mounting point of the front vertical surface 4 of the counterweight 20, thereby blocking the mud kicked up by the wheels.
[0044] In this embodiment, the cover plate 12 is provided with a handle 11. The handle 11 is welded to the upper protective plate.
[0045] Specifically, the handle 11 makes it easier to open the upper protective plate 3, ensuring ease of opening and closing.
[0046] In this embodiment, the rotating component is a hinge 15. One end of the hinge 15 is installed on the mounting end of the upper protective plate 3, and the other end of the hinge 15 is installed on the front vertical surface 4 of the counterweight 20.
[0047] Specifically, hinge 15 enables the upper protective plate 3 to open and close more smoothly and has good adaptability. The rotating part can also be a hinge or a pin to achieve the installation of the upper protective plate 3.
[0048] In this embodiment, one leaf plate of the hinge is fixed to the inner side of the cover plate by fasteners such as screws, and the other leaf plate of the hinge is fixed to the front vertical surface of the counterweight by fasteners such as screws. Placing the hinge on the front vertical surface of the counterweight effectively prevents the accumulation of dirt brought up by the wheel drive and avoids the impact of dirt accumulation on the rotation of the hinge 15.
[0049] In this embodiment, the cover plate includes a long plate and a short plate, which form an L-shape. A rubber plate 17 is fastened to the outer side of the short plate to block the mud kicked up by the rotating wheel, thereby ensuring the normal use of the hinge and extending the service life of the protective plate.
[0050] In this embodiment, the counterweight can be a balance iron, concrete, lead block, etc.
Claims
1. A protective structure for a urea tank, comprising a lower protective plate (1) and an upper protective plate (3), characterized in that: A pull rod assembly (2) is provided between the lower protective plate (1) and the upper protective plate (3). The mounting end of the upper protective plate (3) is mounted on the front vertical surface (4) of the counterweight (20) via a rotating component. A flexible protective baffle that blocks at least part of the rotating component is provided on the outer side of the mounting end of the upper protective plate (3). The pull rod assembly (2) includes a limiting plate (19) and a pull rod (8). One end of the pull rod (8) is hinged to one of the cover plate (12) of the upper protective plate (3) and the lower protective plate (1). The limiting plate (19) is located on the other of the cover plate (12) and the lower protective plate (1). The other end of the pull rod (8) is slidably located in the limiting groove of the limiting plate (19).
2. The urea tank protective structure according to claim 1, characterized in that: The cover plate (12) is magnetically attached to the lower protective plate (1).
3. The urea tank protective structure according to claim 2, characterized in that: The magnetic structure includes a fixing block (5) and a magnetic block (6). The fixing block (5) is fixed on the lower protective plate (1), and the magnetic block (6) is installed on the fixing block (5).
4. The urea tank protective structure according to any one of claims 1 to 3, characterized in that: The lower protective plate (1) is provided with a sealing strip (7) at the opening.
5. The urea tank protective structure according to any one of claims 1 to 3, characterized in that: The cover plate (12) is provided with a fixed bending plate (9), and the fixed bending plate (9) is provided with a connecting seat (10). The connecting seat (10) passes through one end of the pull rod (8). The end of the connecting seat (10) is provided with a fixing member II. One end of the pull rod (8) is limited on the connecting seat (10) by the fixed bending plate (9) and the fixing member II. The other end of the pull rod (8) is provided with a pin (18), and the pin (18) is slidably disposed in the limiting groove.
6. The urea tank protective structure according to claim 5, characterized in that: Both ends of the limiting groove are provided with arc-shaped openings, and the pin (18) is located in the arc-shaped openings to lock the position of the pull rod (8).
7. The urea tank protective structure according to claim 5, characterized in that: The fastener II includes a washer (13) and a bolt II (14), the bolt II (14) passing through the washer (13) and threadedly connected to the connecting seat (10).
8. The urea tank protective structure according to any one of claims 1 to 3, characterized in that: The flexible protective baffle is a rubber plate (17), which is installed on the mounting end of the upper protective plate (3) by fastener III.
9. The urea tank protective structure according to any one of claims 1 to 3, characterized in that: The cover plate (12) is provided with a handle (11).
10. The urea tank protective structure according to any one of claims 1 to 3, characterized in that: The rotating component is a hinge (15), one end of which is installed on the mounting end of the upper protective plate (3), and the other end of which is installed on the front vertical surface (4) of the counterweight (20).