Urea filling auxiliary support, urea box mounting frame and excavator

Abstract

The urea filling auxiliary support comprises a supporting frame and a folding frame, the supporting frame comprises an assembling part and a first connecting part, the assembling part is connected with the first connecting part, a connecting piece used for assembling is arranged on the assembling part, a limiting part is arranged on the first connecting part, and the folding frame is arranged on the supporting frame. The folding frame comprises a second connecting part and a bearing part, the second connecting part is connected with the bearing part, the first connecting part is rotationally connected with the second connecting part, the second connecting part has an unfolded state and a folded state in the rotating process relative to the first connecting part, and in the unfolded state, the second connecting part abuts against the limiting part; the second connecting part reaches the rotation limit in the direction, the supporting frame and the folding frame are rotationally connected, so that the folding frame can be folded when not used, and the overall size is reduced.

Description

Technical Field

[0001] This utility model relates to the field of engineering machinery technology, and in particular to a urea filling auxiliary bracket, a urea tank mounting bracket, and an excavator. Background Technology

[0002] In the field of modern construction machinery, with increasingly stringent emission standards, diesel engines commonly employ Selective Catalytic Reduction (SCR) technology to reduce nitrogen oxide emissions. The core of this technology lies in injecting a urea solution into the engine exhaust, which chemically converts harmful nitrogen oxides into harmless nitrogen and water. Therefore, the regular replenishment of urea solution has become an indispensable part of the daily maintenance and operation of construction machinery.

[0003] Currently, most construction machinery, such as heavy trucks, excavators, and loaders, still rely on traditional manual operation when adding urea. This means the operator must manually lift and pour the urea from the drum into the urea storage tank on the vehicle. This process not only requires a significant amount of physical strength and time, but also increases the operator's workload.

[0004] While existing technologies include supports for urea assisted filling, these supports generally suffer from problems such as large space requirements, complex installation, and relatively high costs. Furthermore, due to design limitations, they often impose strict requirements on the size of the urea tank, restricting their versatility and convenience. This is especially true in space-constrained engineering machinery environments, where the deployment and use of these supports become even more difficult. Utility Model Content

[0005] To overcome at least one of the defects described in the prior art, this utility model provides a urea filling auxiliary support, a urea tank mounting bracket, and an excavator. It solves the problem that currently in engineering machinery, urea filling requires manual filling or the assistance of a large-volume support.

[0006] The technical solution adopted by this utility model to solve its problem is:

[0007] A urea infusion support stent, comprising:

[0008] A support frame, the support frame including an assembly part and a first connecting part, the assembly part and the first connecting part being connected, the assembly part being provided with a connector for assembly, and the first connecting part being provided with a limiting part;

[0009] A folding frame includes a second connecting part and a supporting part, the second connecting part and the supporting part are connected, the first connecting part and the second connecting part are rotatably connected, and the second connecting part has an unfolded state and a folded state during the rotation of the second connecting part relative to the first connecting part. In the unfolded state, the second connecting part abuts against the limiting part, and the second connecting part reaches the rotation limit in that direction.

[0010] By adopting the above-described design, the rotating connection between the support frame and the folding frame allows the folding frame to be folded up when not in use, reducing its overall size. When not in use, the folding frame can be completely stowed away, occupying minimal space, making it particularly suitable for space-constrained engineering machinery environments. The assembly section of the support frame is equipped with connectors for quick and easy attachment to the urea tank mounting bracket. The installation process is simple and quick, requiring no complex tools or steps, significantly reducing installation time and difficulty. The support section of the folding frame provides a stable platform, allowing operators to more easily place the urea tank on it, reducing the physical exertion of manual lifting and pouring, improving filling efficiency, and shortening maintenance time. The limiting part on the first connecting part abuts against the second connecting part in the unfolded state, ensuring the stability of the folding frame.

[0011] Furthermore, the first connecting portion includes a first connecting plate, a second connecting plate, and a third connecting plate connected in sequence, and the limiting portion includes a first limiting portion and a second limiting portion, wherein the first limiting portion is disposed on the first connecting plate and the second limiting portion is disposed on the second connecting plate;

[0012] The second connecting part includes a fourth connecting plate and a fifth connecting plate, and a pull rod is provided between the fourth connecting plate and the fifth connecting plate. The pull rod is located between the fourth connecting plate and the fifth connecting plate and forms a support part.

[0013] The first connecting plate is rotatably connected to the fourth connecting plate, and the second connecting plate is rotatably connected to the fifth connecting plate. In the unfolded state, the fourth connecting plate abuts against the first limiting part, and the fifth connecting plate abuts against the second limiting part.

[0014] By adopting the above scheme, a stable support structure is formed through the rotating connection design of two sets of plates (the first connecting plate and the fourth connecting plate, and the second connecting plate and the fifth connecting plate). In the unfolded state, the fourth connecting plate abuts against the first limiting part, and the fifth connecting plate abuts against the second limiting part, ensuring the stability of the entire bracket. Even if the urea tank has a certain weight, it can be firmly placed on the support without shaking or tilting, avoiding fatigue damage to the connection parts and improving the safety and reliability of the filling process.

[0015] Furthermore, the connecting rod includes a first connecting rod and a second connecting rod, which are arranged parallel to each other between the fourth connecting plate and the fifth connecting plate. One end of the first connecting rod is fixedly connected to the fourth connecting plate and the other end is fixedly connected to the fifth connecting plate. One end of the second connecting rod is fixedly connected to the fourth connecting plate and the other end is fixedly connected to the fifth connecting plate.

[0016] By adopting the above scheme, the connecting rod includes a first connecting rod and a second connecting rod, which are arranged parallel to each other between the fourth connecting plate and the fifth connecting plate, and the two ends of each connecting rod are fixedly connected to the fourth connecting plate and the fifth connecting plate, respectively. The double connecting rod design significantly enhances the rigidity and stability of the support part it forms. Even if the urea tank has a large weight, the support part will not deform or bend, ensuring the safety and reliability of the filling process.

[0017] Furthermore, the assembly part includes a first assembly part and a second assembly part. The first assembly part is connected to the end of the first connecting plate away from the second connecting plate, and the second assembly part is connected to the end of the third connecting plate away from the second connecting plate. Both the first assembly part and the second assembly part are provided with connecting parts for assembly.

[0018] By adopting the above scheme, the first assembly part and the second assembly part are located at different positions on the bracket, providing multiple fixing points for the entire support frame, making it easier to fix the bracket to the external carrier.

[0019] Furthermore, the fourth connecting plate is provided with a retaining plate on the side facing away from the first connecting rod, and the first assembly part is provided with a hook;

[0020] In the folded state, the hook engages with the locking plate to restrict movement of the fourth connecting plate relative to the first assembly.

[0021] By adopting the above solution, the structure of the hook and the card plate ensures the stability of the folding frame in the folded state and prevents the fourth connecting plate from being accidentally unfolded due to external vibration or collision during transportation or storage. This not only reduces the space occupied, but also avoids damage or inconvenience caused by the accidental unfolding of the folding frame.

[0022] Furthermore, a lever is provided on the side of the hook away from the first assembly part for disengaging the hook from the card plate.

[0023] By adopting the above solution, a lever is provided on the side of the hook away from the first assembly part. The operator can easily detach the hook from the clamp with a simple lever action, enabling the bracket to be quickly unfolded and folded. This design greatly simplifies the operation process and improves the user experience.

[0024] Furthermore, the first assembly part, the first connecting plate, the second connecting plate, the third connecting plate, and the second connecting part are sequentially connected and integrally formed.

[0025] By adopting the above solution, the first assembly part, the first connecting plate, the second connecting plate, the third connecting plate, and the second connecting part are sequentially connected and integrally formed, eliminating connection points between components, reducing potential weaknesses and stress concentration points, and significantly improving the structural strength of the entire support. Even when subjected to heavy weight or external impact, the support is not prone to breakage or deformation, ensuring the safety and reliability of the filling process.

[0026] Furthermore, the first connecting part is provided with a first connecting hole, the second connecting part is provided with a second connecting hole, and a pin is inserted through the first connecting hole and the second connecting hole, and the second connecting part can rotate around the pin.

[0027] By adopting the above solution, the pin connection design is very simple. A rotatable connection can be achieved simply by drilling holes in the first and second connecting parts and inserting the pin. This simple structure reduces the number of parts and complexity. During manufacturing, standardized processing techniques allow for quick and accurate drilling and pin installation, reducing production time and costs. At the same time, the standardized production process also improves product quality and consistency.

[0028] This utility model also provides a urea tank mounting bracket, including a urea tank frame and the aforementioned urea filling auxiliary bracket, wherein the mounting part is fixedly connected to the urea tank frame through the connecting member.

[0029] By adopting the above solution, the design of the entire mounting bracket is very simple. The urea filling auxiliary bracket is fixedly connected to the urea tank frame through connectors, reducing complex machining and assembly steps. This simple structure makes the production process more efficient, reduces production time and costs, lowers production difficulty, and makes it very easy to modify existing engineering equipment.

[0030] This utility model also provides an excavator, including a urea tank and the aforementioned urea tank mounting frame, wherein the urea tank is installed in the urea tank frame, the urea tank has a filling port, and the connecting rod is higher than the filling port.

[0031] By adopting the above solution, the connecting rod is higher than the filling port, so the urea bucket placed on the connecting rod will tilt towards the filling port, thus ensuring that all the urea flows into the filling port.

[0032] In summary, the urea filling auxiliary bracket, urea tank mounting bracket, and excavator provided by this utility model have the following technical effects:

[0033] 1. The rotating connection design between the support frame and the folding frame allows the folding frame to be folded up when not in use, reducing the overall volume. When not in use, the folding frame can be completely folded up, taking up very little space, making it particularly suitable for engineering machinery environments with limited space.

[0034] 2. The assembly section of the support frame is equipped with connectors for assembly, which can be quickly fixed to the urea tank mounting bracket. The installation process is simple and quick, without complicated tools and steps, which greatly reduces the installation time and difficulty.

[0035] 3. The support section of the folding frame provides a stable platform, allowing operators to place the urea tank more easily, reducing the physical exertion of manual lifting and pouring, improving filling efficiency, and shortening maintenance time.

[0036] 4. The limiting part on the first connecting part abuts against the second connecting part when it is unfolded, ensuring the stability of the folding frame. Attached Figure Description

[0037] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0038] Figure 2 This is a schematic diagram of the support frame structure of this utility model;

[0039] Figure 3 This is a schematic diagram of the folding frame structure of this utility model;

[0040] Figure 4 This is a schematic diagram of the structure of the urea filling auxiliary support of this utility model in the urea filling state.

[0041] The meanings of the reference numerals in the attached drawings are as follows: 1. Support frame; 11. First assembly part; 12. First connecting plate; 13. Second connecting plate; 14. Third connecting plate; 15. Second assembly part; 161. First limiting part; 162. Second limiting part; 17. Connecting piece; 18. Hook; 181. Paddle; 19. First connecting hole; 2. Folding frame; 21. Fourth connecting plate; 22. Fifth connecting plate; 23. First pull rod; 24. Second pull rod; 25. Clamping plate; 26. Second connecting hole; 3. Pin; 4. Urea tank frame; 5. Urea tank; 51. Filling port; 6. Urea barrel. Detailed Implementation

[0042] To better understand and implement this invention, the technical solutions in the embodiments of this invention will be clearly and completely described and discussed below with reference to the accompanying drawings. Obviously, what is described here is only a part of the examples of this invention, not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this invention without creative effort are within the protection scope of this invention.

[0043] To facilitate understanding of the embodiments of this utility model, further explanations and descriptions will be provided below with reference to the accompanying drawings and specific embodiments. These embodiments do not constitute a limitation on the embodiments of this utility model.

[0044] In the description of this utility model, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0045] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

[0046] See Figure 1-Figure 4 This utility model discloses a support frame 1 and a folding frame 2. The support frame 1 includes an assembly part and a first connecting part, which are connected. The assembly part is provided with a connector 17 for assembly, and the first connecting part is provided with a limiting part. The folding frame 2 includes a second connecting part and a supporting part, which are connected. The first connecting part and the second connecting part are rotatably connected. During the rotation of the second connecting part relative to the first connecting part, it has an unfolded state and a folded state. In the unfolded state, the second connecting part abuts against the limiting part, and the second connecting part reaches the rotation limit in that direction.

[0047] Specifically, the support frame 1 includes an assembly section and a first connecting section connected in sequence. The assembly section is provided with a connector 17 for assembly. The connector 17 can be a structural component that facilitates the installation of the assembly section with an external carrier, such as a screw hole, screw, slot, or snap-fit ​​block; no limitation is made here. The first connecting section is provided with a limiting section, which can be a limiting block, limiting pin, or other component that can limit the rotation angle range of the second connecting section. The folding frame 2 includes a second connecting section and a supporting section. The second connecting section and the supporting section are connected, and the first connecting section and the second connecting section are rotatably connected. During the rotation of the second connecting section relative to the first connecting section, it has an unfolded state and a folded state. In the unfolded state, the second connecting section abuts against the limiting section, and the second connecting section reaches its rotation limit in that direction. The supporting section is used to support the urea tank 6.

[0048] In this structure, during urea filling, the second connecting part rotates relative to the first connecting part, and the supporting part rotates synchronously with the second connecting part. When the second connecting part abuts against the limiting part, it reaches the unfolded state. The urea tank 6 is placed on the supporting part, which is higher than the urea tank 5 that needs to be filled. Thus, the urea in the urea tank 6 flows into the urea tank 5 under the action of gravity, completing the filling. After the urea filling is completed, the second connecting part is rotated in the opposite direction to the unfolding direction relative to the first connecting part, completing the folding of the second connecting part, which is also the folding of the folding frame 2.

[0049] See Figure 1-3 As shown, in this embodiment, the first connecting part includes a first connecting plate 12, a second connecting plate 13 and a third connecting plate 14 connected in sequence, and the limiting part includes a first limiting part (161) and a second limiting part (162). The first limiting part (161) is disposed on the first connecting plate 12, and the second limiting part (162) is disposed on the second connecting plate 13.

[0050] The second connecting part includes a fourth connecting plate 21 and a fifth connecting plate 22. A tie rod is provided between the fourth connecting plate 21 and the fifth connecting plate 22. The tie rod is located between the fourth connecting plate 21 and the fifth connecting plate 22 and forms a support part.

[0051] The first connecting plate 12 is rotatably connected to the fourth connecting plate 21, and the second connecting plate 13 is rotatably connected to the fifth connecting plate 22. In the unfolded state, the fourth connecting plate 21 abuts against the first limiting part (161), and the fifth connecting plate 22 abuts against the second limiting part (162).

[0052] Specifically, a stable support structure is formed through the rotating connection design of two sets of plates (first connecting plate 12 and fourth connecting plate 21, second connecting plate 13 and fifth connecting plate 22). In the unfolded state, the fourth connecting plate 21 abuts against the first limiting part (161), and the fifth connecting plate 22 abuts against the second limiting part (162), ensuring the stability of the entire bracket. Even if the urea tank 6 has a certain weight, it can be firmly placed on the support without shaking or tilting, avoiding fatigue damage to the connection parts and improving the safety and reliability of the filling process.

[0053] See Figure 1-3 As shown, the connecting rod further includes a first connecting rod 23 and a second connecting rod 24. The first connecting rod 23 and the second connecting rod 24 are arranged parallel between the fourth connecting plate 21 and the fifth connecting plate 22. One end of the first connecting rod 23 is fixedly connected to the fourth connecting plate 21 and the other end is fixedly connected to the fifth connecting plate 22. One end of the second connecting rod 24 is fixedly connected to the fourth connecting plate 21 and the other end is fixedly connected to the fifth connecting plate 22.

[0054] Specifically, the connecting rods include a first connecting rod 23 and a second connecting rod 24, which are arranged parallel to each other between the fourth connecting plate 21 and the fifth connecting plate 22, and both ends of each connecting rod are fixedly connected to the fourth connecting plate 21 and the fifth connecting plate 22, respectively. The double connecting rod design significantly enhances the rigidity and stability of the support portion, ensuring that even if the urea tank 6 has a large weight, the support portion will not deform or bend, thus ensuring the safety and reliability of the filling process.

[0055] See Figure 1-3 As shown, in some embodiments, the assembly part includes a first assembly part 11 and a second assembly part 15. The first assembly part 11 is connected to the end of the first connecting plate 12 away from the second connecting plate 13, and the second assembly part 15 is connected to the end of the third connecting plate 14 away from the second connecting plate 13. Both the first assembly part 11 and the second assembly part 15 are provided with connectors 17 for assembly.

[0056] Specifically, the first assembly part 11 and the second assembly part 15 are located at different positions on the bracket, providing multiple fixing points for the entire support frame 1, making it easier to fix the bracket to the external carrier.

[0057] See Figure 1 and Figure 3 As shown, in some embodiments, the fourth connecting plate 21 is provided with a card plate 25 on the side facing away from the first connecting rod 23, and the first assembly part 11 is provided with a hook 18;

[0058] In the folded state, the hook 18 engages with the latch plate 25 to restrict the movement of the fourth connecting plate 21 relative to the first assembly part 11.

[0059] Specifically, the structure of hook 18 and clamping plate 25 ensures the stability of the folding frame 2 in the folded state, preventing the fourth connecting plate 21 from accidentally unfolding due to external vibration or collision during transportation or storage. This not only reduces the space occupied but also avoids damage or inconvenience caused by the accidental unfolding of the folding frame 2. It is best to use a flexible metal sheet for hook 18, so that the user can control the disengagement of hook 18 from clamping plate 25 by bending hook 18 to produce elastic deformation.

[0060] See Figure 1 and Figure 3 As shown, in some embodiments, a lever 181 is provided on the side of the hook 18 away from the first assembly part 11 for disengaging the hook 18 from the clamping plate 25. During use, the operator can easily disengage the hook 18 from the clamping plate 25 with a simple lever action, enabling the folding frame 2 to be quickly unfolded and folded. This design greatly simplifies the operation process and improves the user experience.

[0061] See Figure 2 As shown, in some embodiments, the first assembly part 11, the first connecting plate 12, the second connecting plate 13, the third connecting plate 14, and the second connecting part are sequentially connected and integrally formed. With this configuration, the first assembly part 11, the first connecting plate 12, the second connecting plate 13, the third connecting plate 14, and the second connecting part can be formed by bending a single plate, greatly reducing design and production costs.

[0062] See Figure 1-3 As shown, in some embodiments, the first connecting part is provided with a first connecting hole 19, the second connecting part is provided with a second connecting hole 26, and a pin 3 is inserted through the first connecting hole 19 and the second connecting hole 26, and the second connecting part can rotate around the pin 3.

[0063] Specifically, the first connecting hole 19 can be provided on the first connecting plate 12 and the third connecting plate 14. Correspondingly, the second connecting hole 26 is provided on the fourth connecting plate 21 and the fifth connecting plate 22. The two sets of corresponding first connecting holes 19 and second connecting holes 26 are provided with pins 3, thereby completing the rotational connection between the first connecting plate 12 and the fourth connecting plate 21, and the rotational connection between the third connecting plate 14 and the fifth connecting plate 22.

[0064] See Figure 4 As shown, this utility model also provides a urea tank mounting bracket, including a urea tank frame 4 and the aforementioned urea filling auxiliary bracket, with the assembly part fixedly connected to the urea tank frame 4 via a connector 17.

[0065] Specifically, the urea tank frame 4 can be mounted on equipment that uses a diesel engine as its primary or auxiliary power source; the specific type of equipment is not limited here. The assembly part is fixedly connected to the urea tank frame 4 via connector 17 to complete the overall installation of the urea filling auxiliary support. The structure is simple and easy to install. After installation, urea filling no longer requires a person to hold the urea tank 6, greatly reducing the physical exertion of the operator.

[0066] See Figure 4 As shown, this utility model also provides an excavator, including a urea tank 5 and the aforementioned urea tank 5 mounting bracket. The urea tank 5 is installed in the urea tank bracket 4. The urea tank 5 has a filling port 51, and the connecting rod is higher than the filling port 51.

[0067] Specifically, the excavator uses the aforementioned urea tank mounting bracket. The urea tank 5 is installed in the urea tank bracket 4. The urea tank 5 has a filling port 51. The connecting rod is higher than the filling port 51 so that the urea bucket 6 placed on the connecting rod will tilt towards the filling port 51, thereby ensuring that all the urea flows into the filling port 51.

[0068] In this embodiment, the angle between the plane of the pull rod and the filling port 51 and the horizontal plane is 9°. At this angle, the urea in the urea tank 6 can flow quickly and fully into the urea box 5.

[0069] The technical means disclosed in this utility model are not limited to those disclosed in the above embodiments, but also include technical solutions composed of any combination of the above technical features. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of this utility model, and these improvements and modifications are also considered within the scope of protection of this utility model.

Claims

1. A urea infusion auxiliary stent, characterized in that, include: The support frame (1) includes an assembly part and a first connecting part. The assembly part and the first connecting part are connected. The assembly part is provided with a connector (17) for assembly, and the first connecting part is provided with a limiting part. Folding frame (2), the folding frame (2) includes a second connecting part and a supporting part, the second connecting part and the supporting part are connected, the first connecting part and the second connecting part are rotatably connected, the second connecting part has an unfolded state and a folded state during the rotation of the second connecting part relative to the first connecting part, in the unfolded state, the second connecting part abuts against the limiting part, and the second connecting part reaches the rotation limit in the unfolded state direction.

2. The urea infusion auxiliary stent according to claim 1, characterized in that, The first connecting part includes a first connecting plate (12), a second connecting plate (13) and a third connecting plate (14) connected in sequence. The limiting part includes a first limiting part (161) and a second limiting part (162). The first limiting part (161) is disposed on the first connecting plate (12) and the second limiting part (162) is disposed on the second connecting plate (13). The second connecting part includes a fourth connecting plate (21) and a fifth connecting plate (22). A pull rod is provided between the fourth connecting plate (21) and the fifth connecting plate (22). The pull rod is located between the fourth connecting plate (21) and the fifth connecting plate (22) and forms a support part. The first connecting plate (12) is rotatably connected to the fourth connecting plate (21), and the second connecting plate (13) is rotatably connected to the fifth connecting plate (22). In the unfolded state, the fourth connecting plate (21) abuts against the first limiting part (161), and the fifth connecting plate (22) abuts against the second limiting part (162).

3. The urea infusion auxiliary stent according to claim 2, characterized in that, The connecting rod includes a first connecting rod (23) and a second connecting rod (24). The first connecting rod (23) and the second connecting rod (24) are arranged parallel between the fourth connecting plate (21) and the fifth connecting plate (22). One end of the first connecting rod (23) is fixedly connected to the fourth connecting plate (21), and the other end is fixedly connected to the fifth connecting plate (22). One end of the second connecting rod (24) is fixedly connected to the fourth connecting plate (21), and the other end is fixedly connected to the fifth connecting plate (22).

4. The urea infusion auxiliary stent according to claim 3, characterized in that, The assembly part includes a first assembly part (11) and a second assembly part (15). The first assembly part (11) is connected to the end of the first connecting plate (12) away from the second connecting plate (13). The second assembly part (15) is connected to the end of the third connecting plate (14) away from the second connecting plate (13). Both the first assembly part (11) and the second assembly part (15) are provided with connectors (17) for assembly.

5. The urea infusion auxiliary stent according to claim 4, characterized in that, The fourth connecting plate (21) is provided with a card plate (25) on the side opposite to the first connecting rod (23), and the first assembly part (11) is provided with a hook (18); In the folded state, the hook (18) engages with the latch (25) to restrict the movement of the fourth connecting plate (21) relative to the first assembly (11).

6. The urea infusion auxiliary stent according to claim 5, characterized in that, The hook (18) is provided with a lever (181) on the side away from the first assembly part (11) for using to disengage the hook (18) from the card plate (25).

7. The urea infusion auxiliary stent according to claim 4, characterized in that, The first assembly part (11), the first connecting plate (12), the second connecting plate (13), the third connecting plate (14) and the second connecting part are connected in sequence and integrally formed.

8. A urea infusion auxiliary stent according to any one of claims 1-7, characterized in that, The first connecting part is provided with a first connecting hole (19), and the second connecting part is provided with a second connecting hole (26). A pin (3) is inserted through the first connecting hole (19) and the second connecting hole (26), and the second connecting part can rotate around the pin (3).

9. A urea tank mounting bracket, characterized in that, It includes a urea tank frame (4) and a urea filling auxiliary support as described in any one of claims 1-8, wherein the assembly part is fixedly connected to the urea tank frame (4) via the connector (17).

10. An excavator, characterized in that, Includes a urea tank (5) and a urea tank (5) mounting bracket as described in claim 9, the urea tank (5) being mounted in the urea tank bracket (4), the urea tank (5) having a filling port (51), and the pull rod being higher than the filling port (51).

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