A punching tool for a DPF failure

Abstract

The utility model relates to vehicle technical field, especially a kind of punching tool of DPF failure piece. The punching tool of DPF failure piece includes handle, connecting rod and drill bit;One end of the connecting rod is connected with the handle, the other end of the connecting rod is connected with the drill bit, wherein, the side of the drill bit away from the connecting rod has accommodating cavity.The punching tool of DPF failure piece in the utility model can conveniently punch DPF, without transporting DPF multiple times, improve the punching efficiency of DPF.

Description

Technical Field

[0001] This utility model relates to the field of vehicle technology, and in particular to a drilling tool for DPF failure components. Background Technology

[0002] A diesel particulate filter (DPF) is a device used to filter the exhaust gas from a diesel engine. During use, the conversion efficiency of the DPF needs to be diagnosed. This requires creating a faulty component with low conversion efficiency to simulate DPF blockage or other causes of low efficiency. Traditional methods for creating faulty components involve calculating the conversion efficiency based on parameters such as the area and volume of the carrier, then drilling holes in a normal carrier using a drilling platform. After drilling, the component is tested on an engine test bench. If the DPF's conversion efficiency is high, it needs to be transferred to the drilling platform for re-drilling. If the conversion efficiency still does not meet the experimental requirements, drilling and adjustment are necessary. This repeated adjustment process is time-consuming and labor-intensive, and can easily result in unusable DPFs. Utility Model Content

[0003] This invention provides a drilling tool for DPF failure components. The drilling tool for DPF failure components allows for convenient drilling of DPFs without the need for multiple DPF transfers, thus improving the drilling efficiency.

[0004] To achieve the above objectives, this utility model provides the following technical solution:

[0005] A drilling tool for a DPF-failed component includes: a handle, a connecting rod, and a drill bit; one end of the connecting rod is connected to the handle, and the other end of the connecting rod is connected to the drill bit, wherein the drill bit has a receiving cavity on the side opposite to the connecting rod.

[0006] The drilling tool for DPF failure components provided by this utility model can be aligned with the air outlet of the DPF. The drill bit is perpendicular to the air outlet of the DPF. Rotating the handle allows the drill bit to penetrate deep into the DPF. Since there is a receiving cavity on the side of the drill bit away from the connecting rod, part of the DPF will enter the receiving cavity. When the drill bit enters the DPF to a set depth, an eccentric force can be applied to the handle to cut off the part of the DPF embedded in the drill bit. Shaking the handle allows the drill bit to be removed from the DPF, and the cut-off DPF in the receiving cavity can be removed. Then, compressed air is introduced into the drilled area of ​​the DPF for purging. Using the drilling tool for DPF failure components allows for convenient drilling of DPFs. Compared with the existing technology of drilling through a drilling platform, the drilling tool for DPF failure components in this application is lower in cost and easier to operate.

[0007] In one example, the connecting rod is positioned perpendicular to the handle, and one end of the connecting rod is welded to the handle. This arrangement facilitates user operation of the handle and improves the ease of use of drilling tools for DPF-failed components.

[0008] In one example, the connecting rod is detachably connected to the drill bit. This facilitates adjustment of the drill bit size. In another example, the drill bit has a threaded hole on the side facing the connecting rod, and the connecting rod has a thread at the end away from the handle, the thread engaging with the threaded hole. This method allows for convenient connection of the drill bit to the connecting rod.

[0009] In one example, the connecting rod is welded to the drill bit.

[0010] In one example, the connecting rod is coaxially arranged with the drill bit. This results in greater stability when drilling into the DPF.

[0011] In one example, the outer surface of the connecting rod has graduations to ensure the drilling depth.

[0012] In one example, the connecting rod includes a first connecting rod and a second connecting rod. One end of the first connecting rod is connected to the drill bit, and the other end of the first connecting rod has a mounting cavity. One end of the second connecting rod is connected to the handle, and the other end of the second connecting rod is located in the mounting cavity. The other end of the second connecting rod is movable relative to the inner wall of the mounting cavity to adjust the axial length of the connecting rod. The adjustable length of the connecting rod facilitates the transfer of the drilling tool for the DPF-failed component.

[0013] In one example, the handle has a friction layer on its outer surface. The friction layer makes it easier for the user to grip the handle.

[0014] In one example, at least part of the drill bit's outer diameter is larger than the connecting rod's outer diameter. This not only allows the drill bit to drill a hole in the DPF, but also ensures that the drill bit can penetrate deep into the DPF to achieve the set drilling depth. Attached Figure Description

[0015] Figure 1 A schematic diagram of a drilling tool for a DPF-failed component provided in an embodiment of this utility model;

[0016] Figure 2 A partial structural schematic diagram of a drilling tool for a DPF-failed component provided in an embodiment of this utility model;

[0017] Figure 3 This is another structural schematic diagram of a drilling tool for a DPF-failed component provided in an embodiment of the present invention.

[0018] Icons: 10-Handle; 20-Linkage; 21-Snap-fit; 30-Drill bit; 31-Snap-fit ​​hole; 32-Receiving cavity. Detailed Implementation

[0019] 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.

[0020] Figure 1 A schematic diagram of a drilling tool for a DPF-failed component provided in an embodiment of this utility model. (Refer to...) Figure 1 The drilling tool for the DPF failure component includes a handle 10, a connecting rod 20, and a drill bit 30. One end of the connecting rod 20 is connected to the handle 10, and the other end of the connecting rod 20 is connected to the drill bit 30, wherein the drill bit 30 has a receiving cavity 32 on the side opposite to the connecting rod 20.

[0021] The drilling tool for DPF failure components provided by this utility model can be aligned with the air outlet end of the DPF, with the drill bit 30 perpendicular to the air outlet end of the DPF. Rotating the handle 10 allows the drill bit 30 to penetrate deeply into the DPF. Since the side of the drill bit 30 away from the connecting rod 20 has a receiving cavity 32, a portion of the DPF will enter the receiving cavity 32. When the drill bit 30 penetrates to a set depth in the DPF, an eccentric force can be applied to the handle 10 to cut off the portion of the DPF embedded in the drill bit 30. Shaking the handle 10 removes the drill bit 30 from the DPF and removes the cut-off portion of the DPF from the receiving cavity 32. Then, compressed air is introduced into the drilled area on the DPF for purging. Using the drilling tool for DPF failure components allows for convenient drilling of the DPF. Compared to drilling using a drilling platform in the prior art, the drilling tool for DPF failure components in this application is lower in cost and easier to operate.

[0022] In one embodiment, the connecting rod 20 is perpendicular to the handle 10, and one end of the connecting rod 20 is welded to the handle 10. The perpendicularity defined here is not limited to an absolute 90-degree angle; it allows for non-absolute perpendicularity due to factors such as assembly tolerances, design tolerances, and structural flatness, permitting a small range of angular errors. For example, 80 to 100 degrees can be understood as a perpendicular relationship within the assembly error range. More specifically, the connecting rod 20 is welded to the center of the handle 10, making it easier for the user to grip both ends of the handle 10 during use, improving the ease of use of the drilling tool for DPF-failed components.

[0023] The outer surface of the handle 10 may have a friction layer. The friction layer makes it easier for the user to grip the handle 10. A rubber sleeve may also be fitted onto the handle 10, which can also increase the friction between the user and the handle 10.

[0024] In the above embodiments, the connection between the connecting rod 20 and the drill bit 30 can be in various ways, such as a detachable connection between the connecting rod 20 and the drill bit 30. This way, when the borehole diameter needs to be adjusted, the existing drill bit 30 can be separated from the connecting rod 20 and replaced with a drill bit 30 of the required size.

[0025] There are several ways to achieve a detachable connection: for example, the connecting rod 20 and the drill bit 30 are connected by threads. Specifically, the drill bit 30 has a threaded hole on the side facing the connecting rod 20, and the connecting rod 20 has threads on the side away from the handle 10. The threads and threaded holes mate to achieve a detachable connection between the connecting rod 20 and the drill bit 30. Alternatively, refer to... Figure 2 A locking hole 31 is provided on the side of the drill bit 30 facing the connecting rod 20. A locking part 21 that mates with the locking hole 31 is provided on the connecting rod 20 facing the drill bit 30. When the connecting rod 20 is connected to the drill bit 30, the locking part 21 mates with the locking hole 31. When the connecting rod 20 is disengaged from the drill bit 30, the locking part 21 retracts to one side of the connecting rod 20, so that the connecting rod 20 is disengaged from the drill bit 30.

[0026] In some other embodiments, the drill bit 30 and the connecting rod 20 can also be fixedly connected by welding.

[0027] In the above embodiments, the connecting rod 20 can be any one of cylindrical, frustum, or truncated cone shapes. The handle 10 can be cylindrical, rectangular, or other irregular shapes, and the drill bit 30 can be cylindrical.

[0028] Figure 3 This is another structural schematic diagram of the drilling tool for a DPF-failed component provided in an embodiment of the present invention. (Refer to...) Figure 1 and Figure 3 The connecting rod 20, handle 10, and drill bit 30 are all cylindrical. The connecting rod 20 can be connected to the handle 10 and drill bit 30 by welding. The connecting rod 20 can be a stainless steel tube with a wall thickness of 2mm, an inner diameter of 10mm, and a length of 500mm. The drill bit 30 has a wall thickness of 1.5mm, an inner diameter of 26mm, and a length of 30mm. The handle 10 has a wall thickness of 2mm, an inner diameter of 12mm, and a length of 250mm. The relatively thin wall thickness of the drill bit 30 ensures that it can be properly embedded in the DPF.

[0029] In the above embodiment, the connecting rod 20 and the drill bit 30 are coaxially arranged, so that when a force is applied to the handle 10, the drill bit 30 does not need to be eccentric, thus improving the drilling stability of the drill bit 30.

[0030] To ensure the drilling depth, a scale can be provided on the outer surface of the connecting rod 20.

[0031] In the above embodiments, at least part of the outer diameter of the drill bit 30 is larger than the outer diameter of the connecting rod 20. This not only allows the drill bit 30 to drill holes in the DPF, but also ensures that the drill bit 30 can penetrate deep into the DPF so that the drilling reaches the set depth.

[0032] In some other embodiments, the connecting rod 20 can be a telescopic rod, allowing adjustment of its length to facilitate the transfer of the drilling tool for the DPF failure component. The connecting rod 20 may include a first connecting rod and a second connecting rod. One end of the first connecting rod is connected to the drill bit 30, and the other end has a mounting cavity. One end of the second connecting rod is connected to the handle 10, and the other end is located in the mounting cavity. The other end of the second connecting rod can move relative to the inner wall of the mounting cavity to adjust the axial length of the connecting rod. The adjustable length of the connecting rod facilitates the transfer of the drilling tool for the DPF failure component. The connecting rod may also include a third, fourth, and fifth connecting rod. The connection method between the first and second connecting rods can be as follows: multiple openings are arranged sequentially along the extension direction of the connecting rod on the inner wall of the mounting cavity; an elastic positioning element is provided on the second connecting rod, which can extend and retract in a direction perpendicular to the axial direction of the second connecting rod and can be engaged in the openings to ensure that the second connecting rod can move relative to the inner wall of the mounting cavity.

[0033] In some other embodiments, a helical blade may be provided on the outer surface of the drill bit 30, and / or a helical blade may be provided on the inner surface of the receiving cavity 32. Providing a helical blade can facilitate the drill bit's entry into the DPF.

[0034] Obviously, those skilled in the art can make various modifications and variations to this utility model without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this utility model and their equivalents, this utility model also intends to include these modifications and variations.

Claims

1. A punch tool for DPF failure pieces, characterized by, include: Handle, connecting rod, and drill bit; One end of the connecting rod is connected to the handle, and the other end of the connecting rod is connected to the drill bit, wherein the drill bit has a receiving cavity on the side opposite to the connecting rod.

2. The DPF failure part perforating tool of claim 1, wherein, The connecting rod is perpendicular to the handle, and one end of the connecting rod is welded to the handle.

3. The DPF failure member punching tool according to claim 1 or 2, characterized by, The connecting rod is detachably connected to the drill bit.

4. The DPF failure part perforating tool of claim 3, wherein, The drill bit has a threaded hole on the side facing the connecting rod, and the connecting rod has a thread at the end away from the handle, the thread engaging with the threaded hole.

5. The DPF failure member punching tool according to claim 1 or 2, characterized by, The connecting rod is welded to the drill bit.

6. The DPF failure member punching tool according to claim 1 or 2, characterized by, The connecting rod is coaxially arranged with the drill bit.

7. The DPF failure member punching tool according to claim 1 or 2, characterized by, The outer surface of the connecting rod has graduations.

8. The DPF failure member punching tool according to claim 1 or 2, characterized by, The connecting rod includes a first connecting rod and a second connecting rod. One end of the first connecting rod is connected to the drill bit, and the other end of the first connecting rod has a mounting cavity. One end of the second connecting rod is connected to the handle, and the other end of the second connecting rod is located in the mounting cavity. The other end of the second connecting rod can move relative to the inner wall of the mounting cavity to adjust the axial length of the connecting rod.

9. The DPF failure part perforating tool of claim 1, wherein, The handle has a friction layer on its outer surface.

10. The DPF failure part perforating tool of claim 1, wherein, At least a portion of the drill bit has an outer diameter larger than the connecting rod's outer diameter.

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