Slotted welding hoop seat and hoop

Abstract

The utility model relates to the technical field of hoop seats and clamps, and discloses a seamed welding hoop seat and clamp which comprise a plate body and an arch-shaped seat body which are integrally formed, and the plate body and the arch-shaped seat body define a cylindrical cavity for a hoop belt and a bolt to penetrate through; a welding seam deviating from the center line of the plate body is arranged on the plate body; the plate body is provided with a welding spot used for being connected with the strap and deviating from the welding seam. The hoop comprises a hoop belt, a fastener and the hoop base, the fastener comprises a bolt and a spring arranged on the bolt in a sleeving mode, the bolt comprises a meshing tooth end, a screw rod and a screwing end, a first gasket is integrally formed at the screwing end, and a second gasket arranged on the bolt in a sleeving mode is arranged between the spring and the hoop base. According to the scheme, the hoop seat gap deviates from the center line of the bottom, when the hoop seat and the hoop belt are subjected to spot welding, a welding spot cannot be overlapped with a hoop seat welding seam, so that the cracking risk caused by stress increase due to the fact that the welding seam is welded again is effectively reduced, and the use reliability of the hoop seat and the hoop is improved; and the cost of the whole hoop seat and the seamless welding hoop seat of the steel pipe can be greatly reduced.

Description

Technical Field

[0001] This invention relates to the field of clamp and clamp technology, specifically to a welded clamp and clamp with seams. Background Technology

[0002] A clamp is a mechanical device used to connect, secure, or seal round or cylindrical objects such as pipes, hoses, and cables. It is typically made of metal (such as stainless steel or carbon steel) or high-strength plastic and has a ring-shaped or strip-like structure. Radial pressure is applied through fasteners (such as bolts or screws) or elastic force to achieve a fixing or sealing effect. Figure 7 or Figure 8 The clamp shown includes a clamp band, a clamp seat, and fasteners. The clamp seat is one of the core components, and its structural design and performance directly affect the overall function and performance of the clamp.

[0003] The applicant initially used a one-piece molding method to produce the clamp seat. Specifically, a circular metal tubular structure was first drawn according to the shape of the clamp seat, and then the metal tubular structure was cut using laser cutting to form the clamp seat product. The bottom of the resulting clamp seat was a seamless, one-piece structure. Finally, spot welding was performed in the middle of the clamp seat to achieve a fixed connection between the clamp seat and the clamp band (e.g., Figure 1 (As shown). However, although the clamps formed by this processing method have high strength, they are inefficient and costly, limiting their market application. This is mainly because the metal tubular structure requires multiple drawing processes, as well as annealing and pickling, making the process complex. Furthermore, the final laser cutting process is inefficient, costly, and restricts its large-scale application.

[0004] To address this issue, the applicant improved the forming process of the hoop seat. During the forward conveying of the strip metal sheet, it is stamped using a die and then bent into the shape of the hoop seat. This process is more efficient and has a lower overall cost compared to traditional production. However, the following problem remains: the bottom of the hoop seat formed by die stamping is not a one-piece structure, leaving a gap (where the weld seam is located). Current technical solutions involve either fitting the hoop seat onto the hoop band or welding at both ends or one end of the gap, thus installing the hoop seat onto the hoop band (e.g., ...). Figure 2 As shown), the second method involves laser welding the entire gap to form a weld, then spot welding the center of the weld, and finally installing the clamp onto the clamp (as shown). Figure 3(As shown). However, the clamps of this technology are used in fields such as engineering machinery. Under the vibration, impact and stress generated during the operation of engineering machinery, the gaps are prone to cracking and warping (in method two, the superimposed weld points and welds cause a large difference in stress between the middle position and the surrounding area, which also makes them prone to cracking). On the one hand, this reduces the strength and service life of the clamp seat; on the other hand, the clamp may not be able to maintain a tight state, causing the fixed parts to loosen or even fall off, affecting the normal operation of the equipment, and in severe cases, it may cause safety accidents.

[0005] Therefore, we have developed a welded hoop seat, which effectively reduces the risk of cracking at the weld seam due to increased stress after superimposed spot welding. This not only effectively makes up for the shortcomings of existing technologies, but also has great significance for improving the service life of the hoop seat and clamp and enhancing the safety of use. Summary of the Invention

[0006] The present invention aims to provide a welded hoop seat and clamp to solve the technical problem that the bottom weld of the existing hoop seat increases the risk of cracking due to the increased stress after superimposed spot welding.

[0007] To achieve the above objectives, the present invention adopts the following technical solution: a welded hoop seat, comprising an integrally formed plate and an arched seat, the plate and the arched seat surrounding a cylindrical cavity through which the hoop strap and bolts pass; the plate is provided with a weld, the weld being offset from the center line of the plate.

[0008] The principle and advantages of this scheme are:

[0009] 1. Compared to existing technologies where welds at both ends or one end are prone to cracking and warping when the weld is in the middle of the clamp plate, thus affecting the clamp's lifespan and reducing safety, this solution sets the weld off-center from the plate's centerline. When the clamp is fitted onto the clamp band, even if weld points need to be placed between the plate and the clamp band, the weld points will not overlap with the weld off-center from the centerline. This effectively reduces the risk of cracking caused by increased stress from re-welding the weld, thus improving the service life and safety of the clamp and clamp.

[0010] 2. This solution, by setting weld seams, facilitates the fabrication of hoop seats by sequentially stamping and bending strip metal sheets. Laser welding can then be used to weld the gaps in the hoop seats. This not only ensures that the overall strength of the hoop seats meets the requirements but also effectively reduces the manufacturing difficulty. In mass production, this effectively improves efficiency and reduces the production cost of hoop seats, thereby enhancing the company's production efficiency and competitiveness.

[0011] 3. This solution effectively enhances the strength of the hoop by using an integrally molded plate and arched base, which facilitates the combination of the hoop and fasteners to form a clamp, thereby improving the clamping effect and preventing damage caused by vibration, impact and stress generated during the operation of the construction machinery after clamping.

[0012] Preferably, as an improvement, the plate body is provided with welding points for connection with the hoop, and the welding points are set off from the weld seam.

[0013] Technical benefits: By adopting the above settings, the weld points are offset from the weld seam to further avoid weld seam and weld point overlap, extend the service life of the plate and the hoop, and improve safety.

[0014] Preferably, as an improvement, the length of the plate is shorter than that of the arched base, and the end of the arched base away from the plate is provided with an inclined section and a straight section in sequence; the straight section is provided with a gripper and a clamping end in sequence in the direction away from the plate.

[0015] Technical Effects: This solution, employing the aforementioned configuration, effectively separates the straight section and the arched seat, while also saving materials. The gripper is used to hold the bolt thread, preventing the bolt from falling out of the clamp when the clamp is loosened by reverse tightening, thus reducing the clamp's adjustment effect. The abutment end is used to abut the external spring, ensuring the spring remains pre-tightened within the clamp. This allows the spring to effectively release pre-tightening force and shrink the clamp when the pipeline contracts, automatically compensating for clamp length changes according to pipeline variations and effectively preventing leakage.

[0016] Preferably, as an improvement, the end face of the clamping end is an inclined surface, which is inclined in a direction away from the gripper claw.

[0017] Technical Effect: This solution employs the above-mentioned configuration. After the clamp seat, clamp band, and bolt are installed as a clamp, one end of the clamp seat contacting the washer is beveled, with the bevel facing away from the clamping claw. This ensures that when the clamp is locked with the bolt using the rated torque or exceeding the rated torque, the washer is inclined against the clamp seat, effectively guiding the bolt axis to remain parallel to the axis of the arched seat (or the back of the clamp seat). This facilitates quick bolt adjustment and prevents the bolt from drooping downwards under excessive force, thus affecting bolt adjustment. Specifically, through long-term experiments, the applicant discovered that if the end face of the clamp seat contacting the washer is perpendicular to the clamp seat axis (i.e., no bevel is provided) or the bevel faces the clamping claw, then when the bolt is tightened with the rated torque or exceeding the rated torque, the washer and clamp seat end face experience excessive force. This causes the bolt axis to tilt downwards, forming an angle with the clamp seat axis, which in turn expands the clamping claw, reducing the clamping and limiting effect on the bolt. This not only easily reduces the clamping effect but also shortens the clamp seat's lifespan. Furthermore, during maintenance, the bolts of the clamp may fall out of the clamp seat when disassembling, and the clamp strap cannot be removed, affecting the maintenance process.

[0018] Preferably, as an improvement, the two ends of the plate are chamfered.

[0019] Technical effect: The above-mentioned configuration in this solution, namely the chamfering of the edge of the plate near the contact area with the clamp, makes the transition between the two ends of the plate and the clamp smoother, further reducing the pressure of the plate edge on the pipeline. On the one hand, it avoids the pipeline being damaged by the right-angled edge of the plate during use. On the other hand, the smoother contact surface of the plate and clamp can also reduce leakage points and effectively prevent the fluid transported in the pipeline from leaking.

[0020] Preferably, as an improvement, this solution also provides a clamp, including a clamp band, a fastener and the above-mentioned clamp seat. The fastener includes a bolt and a spring sleeved on the bolt. The bolt includes a meshing tooth end, a threaded rod and a tightening end. The tightening end is integrally formed with a first washer. A second washer sleeved on the bolt thread is provided between the spring and the clamp seat.

[0021] Technical effect: The above-mentioned configuration in this solution allows the second gasket to press the spring between the clamp and the first gasket, effectively transmitting and buffering the tightening force generated when the tightening end rotates. When the clamp is in use, the spring is in a compressed state. When the pipeline deforms and the diameter decreases, the spring rebounds and provides pre-tightening force, causing the clamp to continue to shrink and tighten the pipeline. This achieves an automatic adjustment function and ensures the continuous sealing of the pipeline connection.

[0022] Preferably, as an improvement, a limiting protrusion is provided between the meshing tooth end of the bolt and the screw rod, so that the clamping claw of the clamp seat can clamp the screw rod.

[0023] Technical Effect: This solution employs the above-mentioned configuration, where the gripper and the limiting protrusion work together to prevent the bolt from falling out of the clamp when it is rotated in the reverse direction. Specifically, when the bolt is turned in the reverse direction to loosen the clamp, the gripper presses against the limiting protrusion, firmly confining the meshing teeth of the bolt within the arched seat of the clamp, effectively preventing the bolt from exiting the arched seat and thus avoiding unstable bolt fixing that could affect the efficiency of the clamp operation.

[0024] Preferably, as an improvement, the hoop has two protrusions stamped near its tail end, and the recessed part between the two protrusions forms a mounting groove. The hoop seat is fixed in the mounting groove, and the hoop seat plate and the hoop mounting groove are fixedly connected by welding points.

[0025] Technical Effects: The above-mentioned design facilitates the installation and fixation of the clamp seat and the end of the clamp band, and improves the sealing effect. Specifically, two protrusions and a mounting groove are provided near the end of the clamp band. This facilitates the positioning of the clamp seat during installation and creates a smooth, rounded transition between the clamp seat and the stepped section of the clamp band, preventing dead corners and effectively preventing leakage.

[0026] Preferably, as an improvement, the band is provided near the head end with a worm gear that engages with the meshing teeth on the bolt. The worm gear is composed of uniform and continuous protrusions and grooves.

[0027] Technical effect: The above-mentioned configuration in this solution allows the worm gear to mesh with the meshing teeth on the bolt, similar to a worm gear, which facilitates the effective adjustment of the inner ring diameter of the clamp when rotating the bolt, thereby enabling the adjustment of the clamp to tighten or loosen the pipeline.

[0028] Preferably, as an improvement, the end face of the band is an arc shape that protrudes outward from the middle.

[0029] Technical Effects: This solution, employing the above-mentioned design, facilitates further protection of the pipeline and prevents leaks. Specifically, through long-term experiments, the applicant discovered that when the end face of the clamp is designed to be flat, the resulting rectangular end face not only easily scratches the pipeline, but also, when fluid flows through the pipeline, the flow pressure, transmitted along the flat end face of the clamp, can easily puncture the rectangular end face, leading to fluid leakage. However, when the end face of the clamp is an arc shape protruding outwards from the center, on the one hand, the transition between the arc-shaped end face and the clamp is smoother, effectively reducing damage to the hose; on the other hand, the arc-shaped end face effectively extends the pressure transmission path of the fluid flowing through the pipeline, causing the flow pressure to gradually weaken during flow, preventing it from puncturing the arc-shaped end face, thus effectively avoiding leakage and further improving the sealing effect. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of the seamless welded hoop seat and hoop band spot welding in the prior art.

[0031] Figure 2 This is a schematic diagram of the existing technology of spot welding between the welded hoop seat and the hoop band (in actual operation, there are one-point and two-point welding, the diagram shows the case of two-point welding).

[0032] Figure 3 This is a schematic diagram of the structure of a welded hoop seat with a seam after laser full welding and spot welding with the hoop band in the existing technology.

[0033] Figure 4 This is a schematic diagram of the structure of the welded hoop seat after laser full welding in Embodiment 1 of the present invention and spot welding with the hoop band.

[0034] Figure 5 This is a three-dimensional structural diagram of the welded hoop seat in Embodiment 1 of the present invention.

[0035] Figure 6 This is a front view of the welded hoop seat in Embodiment 2 of the present invention.

[0036] Figure 7 This is a three-dimensional structural diagram of the clamp in Embodiment 3 of the present invention.

[0037] Figure 8 This is a three-dimensional structural diagram of the clamp in Embodiment 3 of the present invention.

[0038] Figure 9 for Figure 8 Enlarged view of section A.

[0039] Figure 10 This is a comparison diagram of the fluid transmission path when the end face of the hoop is rectangular (left) or arc-shaped (right) in Embodiment 3 of the present invention. Detailed Implementation

[0040] The following detailed description illustrates the specific implementation method:

[0041] The reference numerals in the accompanying drawings include: hoop 1, plate 11, weld 111, weld point 112, chamfer 113, arched seat 12, gripper 13, clamping end 14, inclined surface 141, hoop band 2, worm gear 21, protrusion 22, tail end face 23, bolt 31, meshing tooth 311, screw 312, tightening end 313, first washer 314, limiting protrusion ring 315, spring 32, and second washer 33.

[0042] Example 1

[0043] This solution provides a welded hoop, as shown in the attached figure. Figure 4 and Figure 5 As shown: The device includes an integrally formed plate 11 and an arched base 12, which together form a cylindrical cavity through which the clamp 2 and bolt 31 pass. The cavity formed by the arched base 12 and the plate 11 includes a cylindrical inner cavity and a grooved inner cavity. The cylindrical inner cavity is used to install the bolt 31, while the grooved inner cavity is used to install the clamp 2, facilitating the assembly of the clamp base 1, clamp 2, and bolt 31 into a clamp.

[0044] The length of the plate 11 is shorter than that of the arched seat 12. The arched seat 12, at the end furthest from the plate 11, has an inclined section and a straight section in sequence. On the straight section, facing away from the plate 11, are a gripper 13 and a clamping end 14 in sequence. The gripper 13 is used to grip the screw 312 of the bolt 31, and together with the worm gear 21 on the clamp 2, it fixes the bolt 31 in the arched seat 12, preventing the bolt 31 from slipping out of the arched seat 12 when the clamp 2 is loosened by reverse rotation, thus affecting the adjustment efficiency. The clamping end 14 is used to clamp the external spring 32, ensuring that the spring 32 remains pre-tightened in the clamp, allowing the tension generated by the compressed spring to form a locking force through the clamp seat, automatically compensating for changes in pipe diameter caused by the external environment, and improving the internal tightening and sealing effect. The plate 11 has a weld 111, which is offset from the center line of the plate 11. The plate 11 also has a weld point 112 for connection with the clamp 2, which is offset from the weld 111. For reference, in this embodiment, the weld point 112 is located at the center of the plate, and the weld point 112 and the weld 111 do not overlap. The edges at both ends of the plate 11 have chamfers 113, meaning the edges of the plate 11 near the contact area with the clamp 2 have chamfers 113. This makes the transition between the edges of the plate 11 and the clamp 2 smoother, preventing the edges of the plate 11 from scratching the pipeline. The smooth transition between the plate 11 and the clamp 2 also reduces leakage points and improves the sealing effect of the clamp on the pipeline.

[0045] In this design, the clamp seat 1 is used to assemble with the clamp band 2 and fasteners to form a clamp. During use, rotating the fasteners allows the clamp to tighten or loosen over the pipeline. This design also addresses this by offsetting the weld seam 111 from the centerline of the plate 11. When the clamp seat 1 is fitted onto the clamp band 2, welding is performed at the center of the clamp seat 1 to connect it to the clamp band 2. The weld point 112 does not overlap with the weld seam 111, effectively reducing the risk of cracking caused by increased stress from re-welding the weld seam 111, thus improving the service life and safety of the clamp seat 1 and the clamp.

[0046] Example 2

[0047] To further extend the service life of the hoop, the difference between this embodiment and Embodiment 1 is that, as follows: Figure 6 As shown: the end face of the clamping end 14 is a slope 141, which is inclined away from the direction of the gripper 13.

[0048] In this embodiment, when the clamp seat 1, clamp band 2, and fastener assembly are used as a clamp, the end of the clamp seat 1 that contacts the second washer 33 is inclined, and the inclined surface is set away from the side away from the claw 13 and clamp band 2. This allows the second washer 33 to press against the clamp seat 1 in an inclined manner when the bolt 31 is tightened with the rated torque or exceeding the rated torque to lock the clamp. This effectively guides the bolt 31 to remain parallel to the axis of the arched seat 12, avoiding the angle between the two and causing the claw 13 to expand. This effectively enhances the clamping and limiting effect of the claw 13 on the bolt 31, maintains the clamping effect, and also effectively extends the service life of the clamp seat 1.

[0049] Example 3

[0050] This solution also provides a clamp, such as Figure 7 , Figure 8 and Figure 9 As shown, the device includes a clamp 2, fasteners, and the aforementioned clamp seat 1. The fasteners include a bolt 31 and a spring 32 sleeved on the bolt 31. The bolt 31 includes a toothed end, a screw 312, and a tightening end 313. The toothed end has helically arranged toothed teeth 311. A limiting protrusion 315 is provided between the toothed end and the screw 312, and the gripper 13 of the clamp seat 1 grips the screw 312. When the bolt 31 is tightened in the opposite direction, the gripper 13 abuts against the limiting protrusion 315, effectively preventing the bolt 31 from dislodging from the clamp seat 1, thereby effectively improving the clamp adjustment efficiency. The tightening end 313 has a first washer 314 integrally formed, and a second washer 33 sleeved on the bolt 31 is provided between the spring 32 and the clamp seat 1. Near the tail end of the hoop 2, two protrusions 22 are stamped, and the recessed area between the two protrusions 22 forms a mounting groove. The hoop seat 1 is fixed in the mounting groove, and the plate body 11 of the hoop seat 1 and the mounting groove of the hoop 2 are fixedly connected by welding points 112. Near the head end of the hoop 2, there is a worm gear 21 that engages with the meshing teeth 311 on the bolt 31. The worm gear 21 is composed of uniform and continuous protrusions and grooves.

[0051] The end face 23 of the clamp 2 is an arc shape that protrudes outward from the center. When the pipe and clamp are tightly secured, the pressure transmission path of the fluid inside the pipe is as follows: Figure 10As shown, if the end face 23 of the clamp 2 is straight, the resulting rectangular end face is not only prone to scratching the pipeline, but also, when the fluid flows in the pipeline, the fluid pressure is transmitted along the straight end face of the clamp 2 with a shorter path. Although the fluid flow pressure gradually decreases with transmission, the shorter transmission path makes it easier to penetrate the rectangular end face of the clamp 2, resulting in fluid leakage. However, when the end face 23 of the clamp 2 is an arc shape protruding outward from the middle, on the one hand, the transition between the arc-shaped end face and the clamp 2 is smoother, effectively reducing the damage of the end face 23 to the hose (i.e., the pipeline); on the other hand, the arc-shaped end face effectively extends the pressure transmission path when the fluid flows in the pipeline. Under the premise that the flow pressure gradually weakens during the fluid flow process, the fluid flow pressure may decrease to zero only halfway through the transmission path, making it impossible to penetrate the arc-shaped end face, thereby effectively avoiding leakage and further improving the sealing effect.

[0052] The band 2 has a worm gear 21 near its head end that engages with the meshing teeth 311 on the bolt 31. The worm gear 21 is composed of uniform and continuous convex strips and grooves.

[0053] During use, by rotating the tightening end 313, the meshing teeth 311 move on the worm gear 21, tightening or loosening the clamp 2, thereby achieving the clamping or loosening of the pipeline. This solution, by setting a protrusion 22 and an installation groove at the tail end of the clamp 2, not only effectively improves the fixing effect of the clamp 2 and the clamp seat 1, but also, when tightening the bolt 31, the protrusion 22 can effectively abut against the clamp seat 1, thereby effectively transmitting the tightening pressure and causing the meshing teeth 311 to move between the worm gear 21, achieving adjustment of the tightness of the clamp 2. Furthermore, the protrusion 22 effectively fills the stepped gap between the clamp seat plate 11 and the clamp 2 due to the certain thickness of the clamp seat plate 11, making the curvature at the connection between the clamp 2 and the clamp seat plate 11 smoother, the fit with the pipeline tighter, avoiding sealing dead angles, and preventing leakage.

[0054] The above descriptions are merely embodiments of the present invention, and common knowledge such as specific technical solutions and / or characteristics are not described in detail here. It should be noted that those skilled in the art can make various modifications and improvements without departing from the technical solutions of the present invention, and these should also be considered within the scope of protection of the present invention. These modifications and improvements will not affect the effectiveness of the implementation of the present invention or the practicality of the patent. The scope of protection claimed in this application should be determined by the content of its claims, and the specific embodiments described in the specification can be used to interpret the content of the claims.

Claims

1. A welded hoop seat, characterized in that: It includes an integrally formed plate and an arched base, the plate and the arched base forming a cylindrical cavity through which a hoop and bolts pass; the plate has a weld, which is offset from the center line of the plate.

2. The welded hoop according to claim 1, characterized in that: The plate is provided with welding points for connection with the hoop, and the welding points are set off from the weld seam.

3. A welded hoop according to claim 1 or 2, characterized in that: The length of the plate is shorter than that of the arched base. The arched base has an inclined section and a straight section in sequence at the end away from the plate. The straight section has a gripper and a clamping end in sequence in the direction away from the plate.

4. A welded hoop according to claim 3, characterized in that: The end face of the clamping end is a slope, which is inclined away from the direction of the gripper.

5. A welded hoop according to claim 4, characterized in that: The plate has chamfered edges at both ends.

6. A clamp, characterized in that: The device includes a clamp, a fastener, and the clamp seat as described in claim 5. The fastener includes a bolt and a spring sleeved on the bolt. The bolt includes a meshing tooth end, a screw, and a tightening end. The tightening end is integrally formed with a first washer. A second washer sleeved on the bolt screw is provided between the spring and the clamp seat.

7. A clamp according to claim 6, characterized in that: A limiting protrusion is provided between the meshing tooth end of the bolt and the screw rod, so that the claw of the clamp seat can grip the screw rod tightly.

8. A clamp according to claim 6, characterized in that: Two protrusions are stamped near the tail end of the band, and the recessed part between the two protrusions forms a mounting groove. The band seat is fixed in the mounting groove, and the band seat plate and the band mounting groove are fixedly connected by welding points.

9. A clamp according to claim 8, characterized in that: The band is provided with a worm gear near the head end that engages with the meshing teeth on the bolt. The worm gear is composed of uniform and continuous convex strips and grooves.

10. A clamp according to claim 8, characterized in that: The end face of the band is an arc shape that protrudes outward from the middle.

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