A narrow slot clamp backing plate and a reinforced clamp thereof

Abstract

The application discloses a narrow-slot clamp lining plate and a reinforced clamp, wherein the narrow-slot clamp lining plate is an arc-shaped slot-shaped plate, comprising a bottom wall and two symmetrical side walls, one side of the side wall is connected with the bottom wall, and a V-shaped slot is formed between the two side walls and the bottom wall; a plurality of welding bosses are arranged on the outer side of the bottom wall, and the size of the contact surface between the welding boss and the clamp band is larger than the width of the bottom wall. The reinforced clamp comprises a clamp band and a plurality of the above-mentioned narrow-slot clamp lining plates, the two ends of the clamp band are fastened and connected through fastening assemblies, the bottom wall of the narrow-slot clamp lining plate is welded with the inner wall of the clamp band through the welding boss, and the plurality of narrow-slot clamp lining plates are arranged at intervals. According to the application, the welding bosses are arranged on the bottom wall of the lining plate as the spot welding positions of the lining plate, the size of the welding boss is larger than the width of the bottom wall, the contact area of the welding spot is increased, the firmness of the lining plate and the clamp band during welding is ensured, the phenomenon of sparks flying during welding is not prone to occurring, the welding quality is ensured, and the sealing effect of the clamp lining plate is effectively improved.

Description

Technical Field

[0001] This invention relates to the field of clamp technology, and in particular to a narrow-slot clamp liner and its reinforced clamp. Background Technology

[0002] V-type clamps are used for flange connections. They generally consist of a clamp band and multiple V-shaped liners. The V-shaped liners are welded to the inner wall of the clamp band. When the two ends of the clamp band are locked, the multiple V-shaped liners will eventually tighten the flange to achieve a sealing effect.

[0003] V-shaped liners are typically formed from sheet metal using hydraulic or cold bending, and all cross-sections of the V-shaped liner are identical. During welding, electric welding is generally used to weld the bottom wall of the V-shaped liner to the clamp. However, sufficient contact area is required between the two components, meaning the bottom wall of the V-shaped liner must be wide enough. Generally, the width of the bottom wall of the V-shaped liner is determined by the size of the flange to be connected. Due to cost competition, OEMs often use steel pipe flanges instead of flange structures when requirements are not high, resulting in a narrower bottom wall for the matching V-shaped clamp. If the bottom wall of the V-shaped liner is too narrow, for example, less than 4mm, it leads to insufficient contact area at the weld point, resulting in insufficient weld pull-out force. Consequently, when the clamp is under stress, the weld between the clamp and the V-shaped liner is prone to detachment.

[0004] In addition, direct welding of narrow-slot V-shaped liners can easily lead to poor contact during welding due to the small welding area and the arc contact. It can also cause sparks to fly, resulting in lumps or spatter burrs at the weld points of the V-shaped liners. Spatter burrs are formed when the splashed liquid metal adheres to the surface of the plate and solidifies, thus affecting the sealing performance of the V-shaped liners.

[0005] Therefore, considering the aforementioned technical problems, it is necessary to propose a new technical solution. Summary of the Invention

[0006] The purpose of this invention is to provide a narrow-slot clamp liner and its reinforced clamp. By setting several welding protrusions on the bottom wall of the liner as spot welding positions, the size of the welding protrusions is larger than the width of the bottom wall, thereby increasing the contact area of ​​the weld points, thus ensuring the reliability of the welding between the liner and the clamp band. At the same time, it is not easy for sparks to fly during welding, ensuring welding quality while effectively improving the sealing effect of the clamp liner.

[0007] To achieve the purpose of the invention, the present invention provides a narrow groove clamp liner, which is an arc-shaped groove plate. The narrow groove clamp liner includes a bottom wall and two symmetrically arranged side walls. One side of the side wall is connected to the bottom wall, and a V-shaped groove is formed between the two side walls and the bottom wall. A plurality of welding bosses are provided on the outer side of the bottom wall, and the size of the welding bosses is larger than the width of the bottom wall.

[0008] Furthermore, the cross-sectional shape of the welding boss is circular or polygonal.

[0009] Furthermore, several of the welding bosses are spaced apart along the length of the narrow slot clamp liner.

[0010] Furthermore, the sidewall extends outward from the side away from the bottom wall, with an extension wall.

[0011] Furthermore, there is a smooth transition between the sidewall and the bottom wall; and / or a smooth transition between the extension wall and the sidewall.

[0012] Furthermore, the width of the bottom wall is less than 4 mm.

[0013] Furthermore, the narrow-slot clamp liner is integrally formed.

[0014] The present invention also provides a clamp, which includes a clamp band and a plurality of the above-mentioned narrow-slot clamp liner plates. The two ends of the clamp band can be fastened together by a fastening assembly. The bottom wall of the narrow-slot clamp liner plate is welded to the inner wall of the clamp band by the welding boss. The plurality of narrow-slot clamp liner plates are spaced apart.

[0015] Furthermore, it includes three of the aforementioned narrow-slot clamp liner plates.

[0016] Furthermore, the fastening assembly includes a T-bolt, a T-sleeve, and a nut. The T-bolt includes a crossbar and a threaded rod. One end of the clamp is coiled and fitted onto the crossbar. The clamp has a first slot corresponding to the position of the threaded rod, through which the threaded rod passes. The T-sleeve includes a horizontal support and a main tube. The other end of the clamp is coiled and fitted onto the horizontal support. The clamp has a second slot corresponding to the position of the main tube, through which the main tube passes. When the clamp is tightened, the threaded rod passes through the main tube, and the nut is fitted onto the threaded rod to lock the threaded rod to the main tube.

[0017] Compared with the prior art, the narrow-slot clamp liner and its reinforced clamp of this application have at least one or more of the following beneficial effects:

[0018] The narrow-slot clamp liner and its reinforced clamp of this application feature an outwardly protruding welding boss on the outer side of the bottom wall of the narrow-slot clamp liner. During welding, spot welding can be performed at the welding boss, which will directly fuse with the clamp band after a large current is applied. Furthermore, the welding boss directly contacts the clamp band during welding, effectively preventing other parts of the edge from contacting the clamp band, reducing current shunting, and thus improving welding quality. Simultaneously, the welding boss increases the contact area between the narrow-slot clamp liner and the clamp band, thereby increasing the weld nugget diameter and improving the weld pull-out force. When the clamp is under stress, the weld joint between the clamp band and the narrow-slot clamp liner is less likely to detach. In addition, due to the increased welding area and reliable contact of the welding boss, sparks are less likely to occur during welding, thus reducing the likelihood of burrs or spatter at the weld joint of the narrow-slot clamp liner, thereby ensuring the sealing performance of the narrow-slot clamp liner. Furthermore, because the current density is concentrated at the welding boss, it is high, allowing for welding with a smaller current. This also reliably forms a smaller weld nugget, reducing the size of the heat-affected zone and thus minimizing deformation of the narrow-slot clamp liner caused by welding heat, improving product reliability and aesthetics. The accurate positioning and consistent dimensions of the welding boss also ensure uniform strength at each weld joint. Additionally, compared to traditional clamp liners without extended sidewalls, the narrow-slot clamp liner in this embodiment, with its extended sidewalls providing a certain thickness during hydroforming, experiences less deformation and achieves better sealing. A smooth transition between the sidewall and bottom wall, or between the extended wall and the sidewall, ensures better contact between the narrow-slot clamp liner and the outer wall of the component to be locked, further enhancing the sealing effect. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of the reinforced clamp provided in the embodiment of this application;

[0020] Figure 2 This is an exploded structural diagram of the reinforced clamp provided in the embodiments of this application;

[0021] Figure 3 This is a schematic diagram of the narrow-slot clamp liner provided in an embodiment of this application;

[0022] Figure 4 A cross-sectional view of the narrow slot clamp liner provided in this embodiment of the application at the non-welded boss.

[0023] Figure 5 A cross-sectional view of the narrow slot clamp liner at the welding boss provided in an embodiment of this application;

[0024] Figure 6 This is a schematic diagram of the welding between the narrow-slot clamp liner and the clamp band provided in an embodiment of this application.

[0025] Among them, 1-narrow groove clamp liner, 11-bottom wall, 111-welding boss, 12-side wall, 13-extension wall, 2-clamp, 3-fastening assembly, 31-T-bolt, 311-crossbar, 312-screw, 32-T-sleeve, 321-cross support, 322-main pipe, 33-nut, 4-weld core. Detailed Implementation

[0026] To further illustrate the technical means and effects adopted by the present invention to achieve the intended purpose, the following detailed description of the specific implementation methods, structure, features and effects of the present invention, in conjunction with the accompanying drawings and preferred embodiments, is provided.

[0027] Example

[0028] This embodiment provides a reinforced clamp, which mainly consists of a clamp band 2 and several narrow-slot clamp liners 1. The two ends of the clamp band 2 can be fastened together by fastening components 3. The narrow-slot clamp liners 1 are welded to the inner wall of the clamp band 2, and the several narrow-slot clamp liners 1 are spaced apart.

[0029] like Figure 1 and Figure 2 As shown in the figure, a reinforced clamp is schematically illustrated. Its fastening component 3 consists of a T-bolt 31, a T-sleeve 32, and a nut 33. The clamp band 2 is bent into a C-shape. One end of the clamp band 2 is rolled up and fitted onto the crossbar 311 of the T-bolt 31. A first slot is formed in the clamp band 2 corresponding to the threaded portion 312 of the T-bolt 31, allowing the threaded portion 312 to pass through. The other end of the clamp band 2 is rolled up and fitted onto the crossbar 321 of the T-sleeve 32. A second slot is formed in the clamp band 2 corresponding to the main tube 322 of the T-sleeve 32, allowing the main tube 322 of the T-sleeve 32 to pass through. The rolled-up portion of the clamp band 2 is fixedly connected to the main body of the clamp band 2, for example, by spot welding, thereby securing the T-bolt 31 and the T-sleeve 32. When the locking clamp is actually implemented, the screw part 312 of the T-bolt 31 passes through the main part 322 of the T-sleeve 32, and then a nut 33 is put on the screw part 312. The screw part 312 and the main part 322 are locked by tightening the nut 33.

[0030] The narrow-slot clamp liner 1 is disposed on the inner wall of the clamp band 2. Both the clamp band 2 and the narrow-slot clamp liner 1 are preferably made of stainless steel. Figure 3As shown, the narrow-slot clamp liner 1 is an arc-shaped groove plate, comprising a bottom wall 11 and two symmetrically arranged side walls 12. One side of each side wall 12 is connected to the bottom wall 11, and a V-shaped groove is formed between the two side walls 12 and the bottom wall 11. That is, the cross-sectional shape of the narrow-slot clamp liner 1 is a flat-bottomed V-shape with a narrower bottom wall 11. Figures 3 to 6 As shown in the figure. It should be noted that the side wall 12 and the bottom wall 11 shown in the figure preferably have a smooth transition. Therefore, an arc-shaped transition surface will be formed on the outer side of the connection between the side wall 12 and the bottom wall 11. The bottom wall 11 described in this application only refers to the flat part of the bottom of the narrow groove clamp liner 1, and does not include the arc-shaped transition part formed at the connection between the side wall 12 and the bottom wall 11. In specific implementation, the bottom wall 11 of the narrow groove clamp liner 1 is welded to the inner wall of the clamp band 2, preferably by spot welding. Several narrow groove clamp liners 1 are distributed at intervals along the circumferential direction of the clamp band 2, and the ends of adjacent narrow groove clamp liners 1 are opposite each other. Thus, under the constraint of the clamp band 2, a ring structure with the same axial direction as the clamp band 2 and the opening facing inward can be formed, such as Figure 1 or Figure 2 As shown in the figure, three narrow-slot clamping plates 1 are schematically arranged at intervals. The three-section liner design has good sealing performance and is the most widely used. However, in specific implementations, the number of narrow-slot clamping plates 1 is not limited to three, and can be any number of others. The axial direction of the annular structure is defined as the width direction of the bottom wall 11, and the circumferential direction of the annular structure is defined as the length direction of the bottom wall 11. The two side walls 12 are respectively arranged on both sides of the width direction of the bottom wall 11.

[0031] A plurality of welding protrusions 111 are spaced apart along the length of the narrow-slot clamp liner 1 on the outer side of the bottom wall 11. The width of the bottom wall 11 is less than 4 mm, while the dimension of the contact surface between the welding protrusions 111 and the clamp 2 is larger than the width of the bottom wall 11. For example, assuming that the contact surface between the bottom wall 11 and the clamp 2 is not provided, its dimension in the width direction of the bottom wall 11 (i.e., the width of the bottom wall 11) is d1; assuming that the contact surface between the welding protrusions 111 and the clamp 2 is provided, its dimension in the width direction of the bottom wall 11 is d2, then d2 > d1. The cross-sectional shape of the welding protrusions 111 is circular or polygonal, preferably circular. Figure 3 As shown in the figure, two circular welding bosses 111 are schematically provided on the outer side of the bottom wall 11. Of course, in actual implementation, the specific shape and number of the welding bosses 111 can be set as needed. Preferably, the welding bosses 111 and the narrow groove clamp liner 1 are integrally formed, for example, by stamping.

[0032] By providing an outwardly protruding welding boss 111 on the outer side of the bottom wall 11, spot welding can be performed at the welding boss 111 during welding. The welding boss 111 will directly fuse with the clamp 2 after a large current is applied. Furthermore, the welding boss 111 directly contacts the clamp 2 during welding, effectively preventing other parts of the edge from contacting the clamp 2, reducing current shunting, and thus effectively improving welding quality. Simultaneously, the welding boss 111 also increases the contact area between the narrow-slot clamp liner 1 and the clamp 2, thereby increasing the diameter of the weld nugget 4. Figure 6 As shown, the increased weld pull-out force makes the weld joint between the clamp band 2 and the narrow-slot clamp liner 1 less prone to detachment when the clamp is under stress. Furthermore, due to the increased welding area, the welding boss 111 makes reliable contact, reducing the likelihood of sparks during welding and thus preventing the formation of burrs or spatter at the weld joints of the narrow-slot clamp liner 1, thereby ensuring the sealing performance of the narrow-slot clamp liner 1. Additionally, because the current density is concentrated at the welding boss 111, the high current density allows for welding with a smaller current, reliably forming a smaller weld nugget and reducing the size of the heat-affected zone. This reduces deformation of the narrow-slot clamp liner 1 caused by welding heat, improving product reliability and aesthetics. The accurate positioning and consistent dimensions of the welding boss 111 also ensure more uniform strength at each weld joint.

[0033] In a further embodiment, the sidewall 12 of the narrow groove clamp liner 1 also extends outwardly with an extension wall 13 on the side away from the bottom wall 11, such as... Figures 3 to 6 As shown, this allows the narrow-slot clamp liner 1 to better fasten to the outer wall of the component to be locked. Furthermore, compared to conventional clamp liners where the sidewall 12 does not extend with the extension wall 13, the narrow-slot clamp liner 1 in this embodiment has a certain thickness due to the extension wall 13 extending from the sidewall 12 during hydroforming. Therefore, the deformation of the sidewall 12 during hydroforming is smaller, resulting in a better sealing effect.

[0034] Furthermore, the extension wall 13 and the side wall 12 have a smooth transition. This ensures that the narrow groove clamp liner 1 can better fit the outer wall of the component to be locked, thereby further improving the sealing effect.

[0035] In this document, the terms “comprising,” “including,” or any other variations thereof are intended to cover non-exclusive inclusion, which includes not only the elements listed but also other elements not expressly listed.

[0036] In this document, the directional terms such as front, back, top, and bottom are defined based on the location of the components in the accompanying drawings and their relative positions to each other, solely for the purpose of clarity and convenience in expressing the technical solution. It should be understood that the use of these directional terms should not limit the scope of protection claimed in this application.

[0037] Where there is no conflict, the above embodiments and features described herein can be combined with each other.

[0038] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A reinforced clamp, characterized in that, It includes a hoop (2) and a narrow-slot clamp liner (1), the narrow-slot clamp liner (1) being weldable to the hoop (2). The narrow-slot clamp liner (1) is an arc-shaped groove plate, comprising a bottom wall (11) and two symmetrically arranged side walls (12). The width of the bottom wall (11) is less than 4 mm. One side of each side wall (12) is connected to the bottom wall (11), and a V-shaped groove is formed between the two side walls (12) and the bottom wall (11). Several welding bosses (111) are provided on the outer side of the bottom wall (11). The contact surface between the welding bosses (111) and the clamp (2) is... The dimension is greater than the width of the bottom wall (11). Assuming that the welding boss (111) is not provided, the contact surface between the bottom wall (11) and the band (2) has a dimension d1 in the width direction of the bottom wall (11), which is also the width of the bottom wall (11). After the welding boss (111) is provided, the contact surface between the welding boss (111) and the band (2) has a dimension d2 in the width direction of the bottom wall (11), then d2>d1. The two ends of the band (2) can be fastened together by fastening assembly (3). The bottom wall (11) of the narrow groove clamp liner (1) is welded to the inner wall of the band (2) through the welding boss (111). Several narrow groove clamp liners (1) are spaced apart.

2. The reinforced clamp according to claim 1, characterized in that, The cross-sectional shape of the welding boss (111) is circular or polygonal.

3. The reinforced clamp according to claim 1, characterized in that, Several of the welding bosses (111) are distributed at intervals along the length of the narrow groove clamp liner (1).

4. The reinforced clamp according to claim 1, characterized in that, The sidewall (12) extends outward from the side away from the bottom wall (11) with an extension wall (13).

5. The reinforced clamp according to claim 4, characterized in that, The sidewall (12) and the bottom wall (11) have a smooth transition; and / or The extension wall (13) and the side wall (12) have a smooth transition.

6. The reinforced clamp according to claim 1, characterized in that, The narrow-slot clamp liner (1) is integrally formed.

7. The reinforced clamp according to claim 1, characterized in that, It includes three of the aforementioned narrow-slot clamp liners (1).

8. The reinforced clamp according to claim 1, characterized in that, The fastening assembly (3) includes a T-bolt (31), a T-sleeve (32), and a nut (33). The T-bolt (31) includes a crossbar (311) and a screw (312). One end of the clamp (2) is rolled up and fitted onto the crossbar (311). The clamp (2) has a first slot corresponding to the position of the screw (312). The screw (312) passes through the first slot. The T-shaped sleeve (32) includes a horizontal branch (321) and a main branch (322). The other end of the clamp (2) is rolled up and fitted onto the horizontal branch (321). The clamp (2) has a second slot corresponding to the position of the main branch (322). The main branch (322) passes through the second slot. When the clamp is tightened, the screw part (312) passes through the main pipe part (322), and the nut (33) is sleeved on the screw part (312) to lock the screw part (312) and the main pipe part (322).

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