Silencer flange welding protection device
By designing a welding protection device for the silencer flange, and using support and fixing components to secure the flange and bolts, welding debris is prevented from adhering, thus solving the problem of flange end face damage during welding and improving welding quality and connection reliability.
Patent Information
- Application Number
- CN202520320000.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-26
- Publication Date
- 2026-02-10
- Estimated Expiration
- 2035-02-26
AI Technical Summary
During the welding process, welding debris can easily damage the flange connection end face, affecting flatness, leading to an increase in the defect rate and production costs.
A welding protection device for a muffler flange was designed, including a support component, a first fixing component, and a second fixing component. The support component fixes the flange, and the first and second fixing components cooperate to fix the bolt heads. A central pressure plate covers the central hole, and an extension pressure plate covers the bolt hole to prevent welding debris from adhering and to ensure the perpendicularity of the bolts to the flange.
It improved welding quality, reduced the defect rate, avoided air leakage caused by welding debris, ensured the flatness of the flange end face, and improved the connection quality of the muffler.
Smart Images
Figure CN223889240U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of flange processing technology, and in particular to a welding protection device for muffler flanges. Background Technology
[0002] For vehicle exhaust systems, a muffler is usually installed at the exhaust pipe to eliminate the loud noise generated when the engine exhausts high-temperature and high-pressure exhaust gas. When installing the muffler, bolts are usually pre-welded to the flange to ensure the connection between the muffler and the exhaust pipe. During the welding process, welding debris is generated. The high-temperature debris can easily damage the flange connection end face and destroy the flatness of the flange connection end face, which in turn affects the subsequent connection, easily resulting in defective products and increasing production costs. Utility Model Content
[0003] In view of this, the purpose of this utility model is to provide a welding protection device for a muffler flange, which can protect the flange end face during the welding bolt process, thus helping to ensure welding quality and reduce the defect rate.
[0004] This utility model provides a welding protection device for a muffler flange, comprising:
[0005] Support assembly for fixing the flange.
[0006] The first fixing assembly includes a central pressure plate and an extension pressure plate, the central pressure plate and the extension pressure plate being configured to move vertically. The central pressure plate can cover the center hole of the flange, and the extension pressure plate has a functional groove. The head of the flange bolt is received in the functional groove, and a welding space is left between the bolt and the groove wall.
[0007] The first fixing component cooperates with the second fixing component to fix the heads of the two bolts.
[0008] In one embodiment, a support base and a positioning base are included. The positioning base is installed on the upper end of the support base and is used to fix the flange. The positioning base includes a positioning post and a side post. The positioning post cooperates with the central hole. When the flange is placed on the positioning base, the positioning post passes through the central hole, and the side post contacts the side of the flange.
[0009] In one embodiment, the positioning seat has a clearance hole that extends through the positioning seat in the vertical direction. The clearance hole is engaged with the bolts of the flange. When the flange is placed on the positioning seat, the lower part of the bolt passes through the clearance hole.
[0010] In one embodiment, the support assembly further includes a lifting plate. The support base has a through hole that mates with the clearance hole. The lower end of the bolt passes through the through hole. The lifting plate is located in the space below the support base and is configured to move in the vertical direction. The lifting plate can move upward to contact the lower end of the bolt and lift the flange upward.
[0011] In one embodiment, the orthographic projection of the central pressure plate in the vertical direction coincides with the orthographic projection of the middle part of the flange in the vertical direction.
[0012] In one embodiment, the two ends of the extended pressure plate protrude beyond the central pressure plate along its length.
[0013] In one embodiment, the upper end of the central pressure plate is provided with a mounting groove, the mounting groove cooperates with the extension pressure plate, and the extension pressure plate is embedded in the mounting groove.
[0014] In one embodiment, the first fixing assembly further includes a first mounting beam, the center pressure plate and the extension pressure plate being connected to the lower end of the first mounting beam, the first mounting beam being configured to move in a vertical direction so that the center pressure plate and the extension pressure plate can move in a vertical direction relative to the flange.
[0015] In one embodiment, the first fixing component further includes a first pressure member, the upper end of which is connected to the first mounting beam, and the lower end of which is used to contact the upper end of the head of one of the bolts.
[0016] In one embodiment, the second fixing component includes a second mounting beam and a second pressure member, the second mounting beam being configured to move in a vertical direction, the upper end of the second pressure member being connected to the second mounting beam, and the lower end of the second pressure member being used to contact the upper end of the head of another bolt.
[0017] The beneficial effects of this utility model are as follows:
[0018] The support components can fix the flange to be welded. The first fixing component and the second fixing component work together to fix the bolt head to prevent the bolt from shaking in the bolt hole during the welding process. This ensures good perpendicularity between the bolt and the flange, which helps to guarantee the welding quality of the flange and bolt and reduces the failure rate of processing.
[0019] The center pressure plate protects the center hole of the flange, preventing high-temperature welding debris from adhering to the hole wall and avoiding installation gaps between the center hole and the exhaust pipe due to the debris, thus preventing air leakage. The center pressure plate, together with the extension pressure plate, can cover as much of the flange end face as possible, which helps to ensure the flatness of the flange end face and thus ensures the connection quality of the silencer. The overall structure is simple and has good practicality. Attached Figure Description
[0020] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.
[0021] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present utility model;
[0022] Figure 2 This is a schematic diagram of the structure of a support component according to an embodiment of the present invention;
[0023] Figure 3 This is a schematic diagram of the structure of the first fixing component and the flange in one embodiment of the present invention;
[0024] Figure 4 This is a schematic diagram of the structure of the second fixing component and the first fixing component cooperating in one embodiment of the present invention.
[0025] In the picture:
[0026] 10-Support assembly; 11-Support base; 12-Positioning base; 121-Positioning column; 122-Side column; 123-Allowing hole; 13-Lifting plate; 131-First driving component;
[0027] 20-First fixing component; 21-Central pressure plate; 22-Extension pressure plate; 221-Functional slot; 222-Connecting column; 23-First mounting beam; 231-Second driving component; 24-First pressing component;
[0028] 30 - Second fixing component; 31 - Second mounting beam; 32 - Second clamping member; 33 - Third driving member;
[0029] 40 - Flange; 41 - Center hole; 42 - Bolt;
[0030] 50 - Base. Detailed Implementation
[0031] The specific embodiments of this utility model will now be described in detail with reference to the accompanying drawings. Obviously, the described embodiments are merely some, not all, of the embodiments of this utility model. Based on the description of this utility model, all other embodiments obtained by those skilled in the art without inventive effort are within the scope of protection of this utility model.
[0032] Unless otherwise explicitly specified and limited, the terms "setup," "installation," and "connection" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium. Those skilled in the art can understand the specific meaning of these terms based on the specific circumstances.
[0033] The terms “upper,” “lower,” “left,” “right,” “front,” “back,” “top,” “bottom,” “inner,” and “outer,” etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product is in use. They are used only for the convenience of description and simplification, 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.
[0034] The terms “first,” “second,” “third,” etc., are used merely to distinguish elements with similar properties, not to indicate or imply relative importance or a specific order.
[0035] The terms “include,” “comprising,” or any other variation thereof are intended to cover non-exclusive inclusion, which includes not only the elements listed but also other elements not expressly listed.
[0036] like Figure 3 As shown, the silencer flange welding protection device proposed in this utility model is used to protect the flange 40 during welding. The flange 40 includes a central hole 41 and bolt holes. The central hole 41 is located in the middle of the flange 40 and is used to pass through an exhaust pipe. The bolt holes are located on both sides of the central hole 41 and are used to install bolts 42. The welding protection device of this utility model can be used with welding equipment (such as a welding torch) to weld the bolts 42 into the bolt holes of the flange 40, and can also protect the end face of the flange 40, preventing welding debris from falling onto the end face of the flange 40 and affecting the flatness of the flange 40.
[0037] Combination Figures 1 to 3 The silencer flange welding protection device proposed in this utility model includes:
[0038] Support assembly 10 is used to fix flange 40.
[0039] The first fixing assembly 20 includes a central pressure plate 21 and an extension pressure plate 22. The central pressure plate 21 and the extension pressure plate 22 are configured to move vertically. The central pressure plate 21 covers the center hole 41 of the flange 40 to prevent welding debris from falling into the center hole 41. The extension pressure plate 22 has a functional groove 221 that mates with the bolt hole of the flange 40. The head of the bolt 42 is accommodated in the functional groove 221, and a welding space is provided between the head of the bolt 42 and the groove wall of the functional groove 221. This welding space is used to avoid welding equipment so that the bolt 42 can be welded into the bolt hole of the flange 40.
[0040] The first fixing component 20 cooperates with the second fixing component 30 to fix the heads of the two bolts 42.
[0041] The support component 10 can fix the flange 40 to be welded. The first fixing component 20 and the second fixing component 30 cooperate to fix the head of the bolt 42 to prevent the bolt 42 from shaking in the bolt hole during the welding process. This ensures that the bolt 42 and the flange 40 have good perpendicularity, which helps to ensure the welding quality of the flange 40 and the bolt 42 and reduces the failure rate of processing.
[0042] The center pressure plate 21 protects the center hole 41 of the flange 40, preventing high-temperature welding debris from adhering to the hole wall of the center hole 41. This avoids installation gaps between the center hole 41 and the exhaust pipe due to the adhered debris, thus preventing air leakage. The center pressure plate 21, together with the extension pressure plate 22, can cover as much of the end face of the flange 40 as possible, which helps to ensure the flatness of the end face of the flange 40, thereby ensuring the connection quality of the silencer. The overall structure is simple and has good practicality.
[0043] In one embodiment, such as Figure 2 As shown, the support assembly 10 includes a support base 11 and a positioning base 12. The positioning base 12 is mounted on the upper end of the support base 11 and is used to fix the flange 40. The positioning base 12 includes a positioning post 121 and a side post 122. Figure 3 The positioning pin 121 mates with the center hole 41 of the flange 40, and the distribution position of the side pins 122 mates with the end face contour of the flange 40, that is, with the contour of the orthographic projection of the flange 40 on the axial direction of the center hole 41. When the flange 40 is placed on the positioning seat 12, the positioning pin 121 passes through the center hole 41, which can achieve the initial positioning of the flange 40. The side pins 122 contact the side of the flange 40, which performs secondary positioning of the flange 40. The positioning pin 121 and the side pins 122 mate to fix the flange 40.
[0044] like Figure 2As shown, the positioning seat 12 has a clearance hole 123, which penetrates the positioning seat 12 in the vertical direction, and is combined with Figure 3 The clearance hole 123 is positioned to mate with the bolt 42 and the bolt hole. When the flange 40 is placed on the positioning seat 12, the lower part of the bolt 42 passes through the bolt hole and is accommodated in the clearance hole 123. The clearance hole 123 can accommodate the bolt 42 and ensure that the bolt 42 is accurately positioned relative to the flange 40, so as to ensure the perpendicularity of the bolt 42 and the flange 40, which is beneficial to improving the welding quality.
[0045] For example, the positioning seat 12 is detachably installed on the upper end of the support seat 11 by means of screw connection, so as to replace the positioning seat 12 according to the specifications of the flange 40, so as to be suitable for the positioning and fixing of flanges 40 with different center holes 41.
[0046] In one alternative, the orthographic projection of the positioning seat 12 in the vertical direction coincides with the orthographic projection of the end face of the flange 40 in the axial direction of the central hole 41. When the flange 40 is placed on the positioning seat 12, the lower end of the flange 40 and the positioning seat 12 can form a step, so that the flange 40 can be removed from the positioning seat 12 after the bolts 42 are welded, thus improving the convenience of operation.
[0047] In another alternative, such as Figure 2 As shown, the support assembly 10 also includes a lifting plate 13, which is located in the space below the support base 11 and is configured to move in the vertical direction. The support base 11 has a through hole with a clearance hole 123. The lower end of the bolt 42 passes through the clearance hole 123 and through the through hole to exit the lower end of the support base 11. The lifting plate 13 can move upward to contact the lower end of the bolt 42, and the flange 40 is lifted upward by the welded bolt 42 so that the welded flange 40 can be removed from the positioning seat 12.
[0048] Optionally, the lifting plate 13 is driven by a first driving member 131 to achieve vertical movement. In one feasible embodiment, the first driving member 131 is a cylinder.
[0049] In one embodiment, such as Figure 3 As shown, the orthographic projection of the center pressure plate 21 in the vertical direction coincides with the orthographic projection of the middle part of the flange 40 in the vertical direction. This arrangement can protect both the center hole 41 and the end face of the flange 40.
[0050] The extension plate 22 extends along the direction of the line connecting the centers of the two bolt holes of the flange 40 (the length direction of the flange 40), and its two ends in the length direction protrude from the center plate 21 so that the extension plate 22 can cooperate with the center plate 21 to cover the end face of the flange 40 as much as possible.
[0051] In one embodiment, the upper end of the central pressure plate 21 is provided with a mounting groove, which cooperates with the extension pressure plate 22 so that the extension pressure plate 22 can be embedded in the mounting groove, thereby realizing the splicing of the extension pressure plate 22 and the central pressure plate 21. In another alternative embodiment, the central pressure plate 21 and the extension pressure plate 22 are integrally formed.
[0052] In one embodiment, such as Figure 3 As shown, the first fixing assembly 20 also includes a first mounting beam 23, a central pressure plate 21 and an extension pressure plate 22 for connecting to the lower end of the first mounting beam 23. The first mounting beam 23 is configured to move vertically, so that the central pressure plate 21 and the extension pressure plate 22 can move vertically relative to the flange 40. Figure 2 When the center pressure plate 21 and the extension pressure plate 22 move downwards to contact the upper end face of the flange 40, they can work with the positioning seat 12 to fix the flange 40 and protect the end face. At this time, the bolts 42 can be welded by welding equipment. After welding is completed, the center pressure plate 21 and the extension pressure plate 22 move upwards away from the flange 40 so that the flange 40 can be removed and a new flange 40 to be welded can be replaced. Alternatively, it can play a role in avoiding obstacles. The lifting plate 13 can lift the flange 40 so that the flange 40 can be removed.
[0053] For example, such as Figure 3 As shown, the first mounting beam 23 is driven by the second driving member 231 to achieve vertical movement. In one feasible embodiment, the second driving member 231 is a cylinder, and the output shaft of the second driving member 231 is connected to the lower end of the first mounting beam 23.
[0054] For example, such as Figure 3 As shown, the upper end of the extension pressure plate 22 is connected to a connecting column 222. The upper end of the connecting column 222 is detachably connected to the first mounting beam 23, and the lower end is connected to the extension pressure plate 22. This allows the specifications of the connecting column 222 to be adjusted according to the thickness specifications of the flange 40, thereby adjusting the height of the extension pressure plate 22 and the center pressure plate 21. With this configuration, there is no need to adjust the movement stroke of the first mounting beam 23, making disassembly and assembly convenient.
[0055] Optionally, the connecting column 222 and the first mounting beam 23 can be detachably connected by bolts.
[0056] Optionally, the connecting post 222 and the extension pressure plate 22 are connected by snap-fit or adhesive.
[0057] For example, such as Figure 3As shown, the first fixing component 20 also includes a first pressing member 24. The upper end of the first pressing member 24 is connected to the lower end of the first mounting beam 23. The first pressing member 24 can move with the first mounting beam 23 in the vertical direction. The lower end of the first pressing member 24 is used to contact the upper end of the head of one of the bolts 42 to press the bolt 42 into the bolt hole of the flange 40 in the vertical direction to ensure the perpendicularity of the bolt 42 to the flange 40.
[0058] Optionally, the first pressure member 24 is connected to the first mounting beam 23 by bolting.
[0059] In one embodiment, such as Figure 4 As shown, the second fixing assembly 30 includes a second mounting beam 31 and a second clamping member 32. The second mounting beam 31 is configured to move in the vertical direction. The upper end of the second clamping member 32 is connected to the lower end of the second mounting beam 31. The second clamping member 32 can move in the vertical direction with the second mounting beam 31. The lower end of the second clamping member 32 is used to contact the upper end of the head of another bolt 42 to press the bolt 42 into the bolt hole of the flange 40 in the vertical direction to ensure the perpendicularity of the bolt 42 to the flange 40.
[0060] For example, the second mounting beam 31 is driven by a third drive member 33 to achieve vertical movement. In one feasible embodiment, the third drive member 33 is a cylinder, and the output shaft of the third drive member 33 is connected to the lower end of the second mounting beam 31.
[0061] In one embodiment, such as Figure 1 As shown, the silencer flange welding protection device proposed in this utility model also includes a base 50. The aforementioned support component 10, first fixing component 20 and second fixing component 30 are integrated on the base 50 and are configured in at least two sets to cooperate with welding equipment to perform welding operations on multiple flanges 40, which is beneficial to improving processing efficiency.
[0062] The above description is only a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model.
Claims
1. A welding protection device for a silencer flange, characterized in that, include: Support assembly (10) for fixing flange (40). The first fixing assembly (20) includes a central pressure plate (21) and an extension pressure plate (22). The central pressure plate (21) and the extension pressure plate (22) are configured to move vertically. The central pressure plate (21) can cover the center hole (41) of the flange (40). The extension pressure plate (22) has a functional groove (221). The head of the bolt (42) of the flange (40) is accommodated in the functional groove (221), and a welding space is left between the bolt (42) and the groove wall of the functional groove (221). The first fixing component (20) cooperates with the second fixing component (30) to fix the heads of the two bolts (42).
2. The silencer flange welding protection device according to claim 1, characterized in that, The device includes a support base (11) and a positioning base (12). The positioning base (12) is installed on the upper end of the support base (11) and is used to fix the flange (40). The positioning base (12) includes a positioning post (121) and a side post (122). The positioning post (121) cooperates with the center hole (41). When the flange (40) is placed on the positioning base (12), the positioning post (121) passes through the center hole (41), and the side post (122) contacts the side of the flange (40).
3. The silencer flange welding protection device according to claim 2, characterized in that, The positioning seat (12) is provided with a clearance hole (123), which passes through the positioning seat (12) in the vertical direction. The clearance hole (123) is engaged with the bolt (42) of the flange (40). When the flange (40) is placed on the positioning seat (12), the lower part of the bolt (42) passes through the clearance hole (123).
4. The silencer flange welding protection device according to claim 3, characterized in that, The support assembly (10) also includes a lifting plate (13). The support base (11) has a through hole that mates with the clearance hole (123). The lower end of the bolt (42) passes through the through hole. The lifting plate (13) is located in the space below the support base (11) and is configured to move in the vertical direction. The lifting plate (13) can move upward to contact the lower end of the bolt (42) and lift the flange (40) upward.
5. The silencer flange welding protection device according to claim 1, characterized in that, The orthographic projection of the central pressure plate (21) in the vertical direction coincides with the orthographic projection of the middle part of the flange (40) in the vertical direction.
6. The silencer flange welding protection device according to claim 1, characterized in that, The two ends of the extended pressure plate (22) protrude from the central pressure plate (21) in the length direction.
7. The silencer flange welding protection device according to claim 1, characterized in that, The upper end of the central pressure plate (21) is provided with an installation groove, which cooperates with the extension pressure plate (22), and the extension pressure plate (22) is embedded in the installation groove.
8. The silencer flange welding protection device according to claim 1 or 4, characterized in that, The first fixing assembly (20) further includes a first mounting beam (23), the center pressure plate (21) and the extension pressure plate (22) being connected to the lower end of the first mounting beam (23), the first mounting beam (23) being configured to move in the vertical direction so that the center pressure plate (21) and the extension pressure plate (22) can move in the vertical direction relative to the flange (40).
9. The silencer flange welding protection device according to claim 8, characterized in that, The first fixing component (20) further includes a first pressure member (24), the upper end of which is connected to the first mounting beam (23), and the lower end of which is used to contact the upper end of the head of one of the bolts (42).
10. The silencer flange welding protection device according to claim 9, characterized in that, The second fixing assembly (30) includes a second mounting beam (31) and a second clamping member (32), the second mounting beam (31) being configured to move in the vertical direction, the upper end of the second clamping member (32) being connected to the second mounting beam (31), and the lower end of the second clamping member (32) being used to contact the upper end of the head of another bolt (42).