Impact-reducing sleeve welding reinforcement device

Abstract

The utility model relates to mechanical equipment auxiliary maintenance technical field discloses slow down impact shaft sleeve welding reinforcing device, including pivot, the buffer mechanism of setting in the outside of pivot and install fixed establishment in the middle part of buffer mechanism outside, fixed establishment includes base, fixed ring, slide rail, clamping block and rotating disc, the handle moves along slide rail and drives rotating disc rotation, and rotating disc drives multiple clamping blocks synchronous movement to the pivot axle center through transmission cooperation structure to realize the fixation to pivot, and buffer mechanism includes the rubber pad, honeycomb pad and silk screen pad that stack gradually from inside to outside, and the inner wall of rubber pad is equipped with the reinforcing rib. The utility model discloses through fixed establishment and realizes pivot quick centring locking, and slow down impact shaft sleeve welding reinforcing device effectively absorbs high frequency vibration and dissipates strong impact through the hierarchical compound buffer structure, and slow down impact shaft sleeve welding reinforcing device significantly improves the welding operation stability and device impact resistance.

Description

Technical Field

[0001] This utility model relates to the field of auxiliary maintenance technology for mechanical equipment, and in particular to a device for welding and reinforcing impact-absorbing bushings. Background Technology

[0002] During the operation and maintenance of various industrial machinery transmission systems, the shaft, as a power transmission component, inevitably suffers from mechanical impacts and complex vibrations from multiple directions under long-term high-load operation. In order to extend the service life of the shaft and ensure the stability of equipment operation, protective kits need to be installed on the outside of the shaft. At the same time, when the shaft is worn or needs to improve its structural strength, it is often necessary to perform on-site welding reinforcement work on the shaft.

[0003] However, existing shaft protection technologies have obvious structural defects. Existing shaft protection kits only have basic physical coverage functions and lack integrated mechanical fixing structures. This results in technicians lacking effective and stable support when welding and reinforcing shafts. When welding shafts without the assistance of special clamping tools, slight displacement or vibration may occur. Instability during welding will directly reduce the accuracy and quality of the weld, and may even cause permanent deformation of the shaft due to uneven heating.

[0004] Furthermore, traditional single-structure bushings are difficult to effectively dissipate high-frequency micro-amplitude vibrations and medium- and low-frequency strong impacts. Single-structure bushings will suffer local damage when subjected to concentrated loads. There is a lack of a composite device in the existing technology that can provide multi-layered buffer protection and achieve rapid centering and locking during welding.

[0005] Therefore, this utility model proposes a welding reinforcement device for impact-reducing bushings to address the shortcomings of existing technologies. Utility Model Content

[0006] In view of the problems existing in the technology of shaft protection kits, such as the relatively simple structural design, lack of integrated mechanical fixing device leading to lack of effective support during welding reinforcement, causing slight displacement or vibration and thus reducing weld accuracy, and the inability of traditional single-structure shaft sleeves to simultaneously cope with high-frequency micro-vibration and medium-low frequency strong impact, and the occurrence of local damage under concentrated load, this utility model aims to provide a structurally improved shaft sleeve welding reinforcement device that can effectively solve the above problems.

[0007] This utility model provides a welding reinforcement device for shock-absorbing bushings, comprising: a rotating shaft, a buffer mechanism sleeved on the outside of the rotating shaft, and a fixing mechanism installed in the middle of the outside of the buffer mechanism.

[0008] The fixing mechanism includes a base installed on the bottom outer side of the buffer mechanism. A fixing ring is fixedly connected to the front top of the base. A slide rail is fixedly connected to the upper right side of the outer wall of the fixing ring. A slide groove is opened inside the slide rail. Multiple clamping blocks are slidably connected to the front side of the fixing ring. A fixing rod is fixedly connected to the front side of the clamping blocks. A rotating disk is sleeved on the outside of the fixing rod. A fixing block is fixedly connected to the right side of the outer wall of the rotating disk. A handle is fixedly connected to the middle rear side of the fixing block. A roller is rotatably connected to the middle outer wall of the handle. The handle passes through the slide groove in the slide rail. The roller is rotatably connected inside the slide groove. A nut is threadedly connected to the rear outer wall of the handle.

[0009] Furthermore, a transmission engagement structure is provided between the rotating disk and the fixed rod. The transmission engagement structure is used to drive the fixed rod and the clamping block to move toward the axis of the rotating shaft when the rotating disk rotates, thereby achieving stable clamping and fixing of the rotating shaft.

[0010] Preferably, the buffer mechanism includes an innermost rubber pad, and reinforcing ribs are fixedly connected to the inner wall of the rubber pad around the perimeter. The reinforcing ribs are distributed in an arc shape and are used to distribute the concentrated impact force evenly along the circumference.

[0011] Preferably, a honeycomb pad is fixedly connected to the outer wall of the rubber pad, and a wire mesh pad is fixedly connected to the outer wall of the honeycomb pad. The honeycomb pad is used to dissipate medium-frequency impacts, and the wire mesh pad is used to limit excessive deformation.

[0012] Preferably, the front and rear ends of the outer side of the wire mesh pad are fitted with fixing sleeves, and multiple arc-shaped plates are fixedly connected around the outer side of the fixing sleeves. The arc-shaped plates have arc-shaped surfaces that can convert radial force into tangential component force, and the arc-shaped plates are used to improve the torsional stiffness of the bushing.

[0013] Preferably, the buffer mechanism comprises a composite bushing, and the front and rear ends of the composite bushing are fixedly connected to a perforated constraint plate, which is used to balance the internal and external air pressure and suppress impact vibration.

[0014] Preferably, the transmission and engagement structure is configured such that an arc-shaped guide groove is formed on the surface of the rotating disk, the fixed rod passes through the arc-shaped guide groove and slides with the rotating disk, and the fixed rod is driven to move radially through the trajectory of the arc-shaped guide groove when the rotating disk rotates.

[0015] Preferably, the slide groove extends in an arc shape along the length of the slide rail. When the handle moves in the slide groove via the roller, the slide groove can guide the handle to drive the fixed block and the rotating disk to rotate around the axis of the rotating shaft.

[0016] Preferably, the nut is used to fit tightly against the slide rail during rotation, and the grip is fixed at any position in the slide groove by friction, thereby maintaining the fixed state of the clamping block on the rotating shaft.

[0017] This utility model has the following beneficial effects: 1. This utility model, by setting a fixing mechanism on the outside of the buffer mechanism, uses the transmission cooperation between the rotating disk and the fixing rod to convert the rotational motion of the handle into the synchronous radial linear motion of multiple clamping blocks, which solves the problem of low positioning accuracy and wobbling and displacement caused by the lack of a stable clamping device for the rotating shaft during the welding process in the prior art. It achieves the effect of quickly realizing the centering and fixing of the rotating shaft and significantly improving the stability and accuracy of the welding operation.

[0018] 2. This utility model, by adopting a graded composite buffer structure composed of an inner rubber pad, a middle honeycomb pad and an outer wire mesh pad, and in conjunction with the arc-shaped reinforcing ribs on the inner wall, solves the problem that existing shaft sleeves are unable to simultaneously cope with high-frequency vibration and strong impact and are prone to local stress concentration. It achieves the effects of effectively absorbing high-frequency micro-vibrations, dissipating mid-frequency impact energy by utilizing structural buckling, uniformly dispersing local stress and limiting excessive material deformation, and providing all-round protection for the shaft from impact damage.

[0019] 3. This utility model solves the problems of insufficient torsional stiffness of traditional bushings and air cushion effect rebound caused by pressure on the closed buffer cavity by setting an arc-shaped plate on the outside of the fixed sleeve that can convert radial force into tangential component force, and setting a constraint plate with ventilation holes at the end of the bushing. It achieves the effects of enhancing the overall torsional structural stiffness of the device, balancing the internal and external air pressure to ensure smooth energy absorption stroke, and further improving the impact protection performance. Attached Figure Description

[0020] Figure 1 This is a perspective view of the impact mitigation bushing welding reinforcement device proposed in this utility model; Figure 2 This is a front view of the impact mitigation bushing welding reinforcement device proposed in this utility model; Figure 3 This is an exploded view of the fixing mechanism of the impact mitigation bushing welding reinforcement device proposed in this utility model; Figure 4 This is an exploded view of the buffer mechanism of the impact mitigation bushing welding reinforcement device proposed in this utility model.

[0021] Legend: 1. Rotating shaft; 2. Fixing mechanism; 201. Base; 202. Fixing ring; 203. Slide rail; 204. Slide groove; 205. Clamping block; 206. Fixing rod; 207. Rotating disk; 208. Fixing block; 209. Handle; 210. Roller; 211. Nut; 3. Buffering mechanism; 301. Rubber pad; 302. Reinforcing rib; 303. Honeycomb pad; 304. Wire mesh pad; 305. Fixing sleeve; 306. Arc plate; 307. Constraint plate. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions in the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0023] Example: Please refer to Figures 1 to 4 This utility model provides a welding reinforcement device for shock-absorbing bushings, which aims to solve the problems of insufficient welding accuracy caused by the lack of an effective stabilizing device during the welding process of the existing rotating shaft 1, and the stress concentration and lack of graded buffer protection of the existing rotating shaft 1 structure when subjected to impact.

[0024] Please refer to Figure 1 and Figure 2 The impact-reducing bushing welding reinforcement device includes a rotating shaft 1 and a buffer mechanism 3 sleeved on the outside of the rotating shaft 1. A fixing mechanism 2 is installed in the middle of the outside of the buffer mechanism 3. The buffer mechanism 3 is used to enhance the anti-buffering capacity of the rotating shaft 1 and form a composite bushing structure. The fixing mechanism 2 is used to ensure the stability during welding and to clamp the rotating shaft 1 in a centered manner.

[0025] Specifically, the fixing mechanism 2 includes a base 201 installed on the bottom outer side of the buffer mechanism 3. A fixing ring 202 is fixedly connected to the front top of the base 201. The fixing ring 202 serves as the main support and guide component. A slide rail 203 is fixedly connected to the upper right side of the outer wall of the fixing ring 202. A slide groove 204 is provided inside the slide rail 203. The slide groove 204 extends in an arc shape along the length of the slide rail 203, providing a specific trajectory for the movement of the driving component. At the same time, multiple clamping blocks 205 are slidably connected to the front side of the fixing ring 202. A fixing rod 206 is fixedly connected to the front side of the clamping block 205. A rotating disk 207 is fitted on the outer side of the fixed rod 206. A transmission cooperation structure is provided between the rotating disk 207 and the fixed rod 206. A fixed block 208 is fixedly connected to the right side of the outer wall of the rotating disk 207. A handle 209 is fixedly connected to the middle of the rear side of the fixed block 208. A roller 210 is rotatably connected to the middle of the outer wall of the handle 209. The handle 209 passes through the slide groove 204 in the slide rail 203. The roller 210 is rotatably connected inside the slide groove 204. A nut 211 is threadedly connected to the rear side of the outer wall of the handle 209. The handle 209 drives the rotating disk 207 to rotate, thereby driving the clamping block 205 to move to fix the rotating shaft 1.

[0026] Please refer to Figure 3 The rotating disk 207 has multiple arc-shaped guide grooves on its surface. The fixing rod 206 passes through the arc-shaped guide grooves and slides against the inner wall of the arc-shaped guide grooves. When the handle 209 drives the rotating disk 207 to rotate, the side wall of the arc-shaped guide grooves applies a radial thrust to the fixing rod 206. Under the constraint of the trajectory of the arc-shaped guide grooves, the fixing rod 206 is driven to move towards the axis of the rotating shaft 1. At the same time, a clamping block 205 is fixedly connected to the front end of the fixing rod 206. The clamping block 205 is slidably connected to the front surface of the fixing ring 202. The fixing ring 202 provides radial guidance and circumferential limitation for the clamping block 205. The rotating disk 207 cooperates with the fixing ring 202. The structure ensures that the rotational motion of the rotating disk 207 is precisely converted into the synchronous centripetal linear clamping motion of multiple clamping blocks 205. The fixing mechanism 2 achieves stable fixation of the rotating shaft 1. After the clamping action is completed, in order to prevent the mechanism from loosening, a nut 211 is threaded on the rear side of the outer wall of the handle 209. When it is necessary to lock the clamping position, tighten the nut 211 so that the end face of the nut 211 fits tightly against the outer surface of the slide rail 203. The axial pressing friction force generated between the nut 211 and the slide rail 203 firmly locks the handle 209 in a specific position of the slide groove 204. The nut 211 is used to prevent the handle 209 from being accidentally displaced during welding vibration.

[0027] Please refer to Figure 4The buffer mechanism 3 includes an innermost rubber pad 301 made of highly elastic rubber. The rubber pad 301 is directly fitted onto the outer wall of the rotating shaft 1. The rubber pad 301 absorbs the high-frequency, low-amplitude vibrations transmitted by the rotating shaft 1. Reinforcing ribs 302 are fixedly connected to the inner wall of the rubber pad 301 on all four sides. These reinforcing ribs 302 are distributed in an arc-shaped strip pattern. The reinforcing ribs 302 are used to evenly distribute the locally concentrated impact force transmitted by the rotating shaft 1 along the circumferential direction. The reinforcing ribs 302 effectively prevent the rubber pad 301 from cracking due to localized stress concentration. A honeycomb pad 303 is fixedly connected to the outer wall surface of the pad 301. The honeycomb pad 303 is composed of multiple hexagonal lattice arrays. The honeycomb pad 303 uses the buckling deformation characteristics of the porous structure to dissipate mid-frequency impact energy. A wire mesh pad 304 is further fixedly connected to the outer wall surface of the honeycomb pad 303. The wire mesh pad 304 is woven from metal wires. The wire mesh pad 304 has a higher structural strength than the rubber pad 301 and the honeycomb pad 303. The wire mesh pad 304 is used to provide rigid exoskeleton support for the internal flexible buffer layer. The wire mesh pad 304 limits the excessive deformation of the buffer mechanism 3 when subjected to heavy pressure.

[0028] As a preferred embodiment, in order to further improve the overall torsional stiffness of the buffer mechanism 3 and optimize the force distribution, the front and rear ends of the outer side of the wire mesh pad 304 are fitted with fixing sleeves 305. Multiple arc-shaped plates 306 are fixedly connected to the outer four sides of the fixing sleeves 305. The arc-shaped plates 306 are evenly distributed around the circumference of the fixing sleeves 305. The arc-shaped plates 306 use their own arched geometric structure to convert the radial impact force into a tangential component force. The arc-shaped plates 306 and the fixing sleeves 305 cooperate to form a rigid shell to protect the inner soft material layer. The fixing sleeves 305 and the arc-shaped plates 306 prevent sharp external objects from directly piercing the rubber pad 301 or the honeycomb pad 303.

[0029] As another preferred embodiment, in order to solve the problem that the shock absorption effect is affected by the rebound force generated by the internal air compression when the closed buffer cavity is under pressure, the front and rear ends of the composite bushing composed of the buffer mechanism 3 are fixedly connected with constraint plates 307. Multiple vent holes are opened on the surface of the constraint plate 307, and the vent holes penetrate the plate body of the constraint plate 307. The vent holes are used to balance the air pressure inside the buffer mechanism 3 and the external environment. When the buffer mechanism 3 is impacted and undergoes compression deformation, the internal air is quickly discharged through the vent holes on the constraint plate 307. The constraint plate 307 prevents the generation of air cushion effect and ensures that the buffer mechanism 3 can smoothly carry out the energy absorption stroke.

[0030] As another preferred embodiment, in order to ensure that the operating trajectory of the grip 209 is precisely matched with the rotational motion of the rotating disk 207, the groove 204 inside the slide rail 203 extends in an arc along the length of the slide rail 203. The radius of the arc of the groove 204 matches the radius of rotation of the grip 209 around the axis 1. When the grip 209 drives the roller 210 to roll in the groove 204, the arc-shaped groove 204 guides the grip 209 to smoothly drive the rotating disk 207 to rotate around the axis 1. The groove 204 avoids the jamming phenomenon caused when linear motion is forcibly converted into rotational motion.

[0031] As another preferred embodiment, in order to dissipate energy in stages for impacts of different frequencies, the honeycomb pad 303 specifically adopts a deformable hexagonal lattice array structure. The hexagonal lattice buckles and deforms when subjected to radial impact to dissipate mid-frequency impact energy. The wire mesh pad 304 specifically adopts a metal wire braided structure. The metal wire braided structure has high tensile strength and structural rigidity. The wire mesh pad 304 tightly covers the outside of the honeycomb pad 303. The wire mesh pad 304 is used to limit the excessive collapse deformation of the honeycomb pad 303 under extreme impact. The rubber pad 301, the honeycomb pad 303, and the wire mesh pad 304 are stacked in sequence and fixedly connected by adhesive. The rubber pad 301, the honeycomb pad 303, and the wire mesh pad 304 work together to achieve full coverage protection from high-frequency vibration to strong impact.

[0032] Working principle: When the shaft 1 is subjected to external impact force, the innermost rubber pad 301 of the composite bushing first absorbs high-frequency vibration by its own elastic deformation. The reinforcing ribs 302 on the inner wall of the rubber pad 301 distribute the concentrated impact force evenly along the circumferential direction to avoid stress concentration. Then the impact force is transmitted to the honeycomb pad 303. The honeycomb pad 303 dissipates the medium-frequency impact energy through structural buckling. The wire mesh pad 304 restricts the excessive deformation of the internal material. The arc plate 306 on the outside of the fixed sleeve 305 converts the radial impact force into a tangential component force to improve the torsional stiffness of the bushing. The constraint plates 307 at both ends of the composite bushing balance the internal and external air pressure through the vent holes. The multi-layer synergistic effect achieves effective buffer protection for the shaft 1. When welding is required and the rotating shaft 1 is fixed, the operator holds the handle 209 and moves the handle 209 along the track of the slide rail 203. The roller 210 rolls in the groove 204 opened in the slide rail 203 to reduce the moving resistance. The handle 209 moves the fixing block 208, and the fixing block 208 further drives the rotating disk 207 to rotate around the axis of the rotating shaft 1. When the rotating disk 207 rotates, the rotating disk 207 drives the fixed rod 206 to move along the arc trajectory toward the axis of the rotating shaft 1 through the transmission cooperation between the arc guide groove and the fixed rod 206. The fixed rod 206 drives the clamping block 205 to move toward the axis synchronously. The fixing ring 202 provides guidance and support for the movement of the clamping block 205. The fixing ring 202 ensures that the clamping block 205 moves stably in a radial straight line until multiple clamping blocks 205 are tightly abutted against the surface of the rotating shaft 1 to complete the clamping and fixing. The fixing mechanism 2 provides a stable guarantee for subsequent welding work. After the clamping block 205 fixes the rotating shaft 1, the operator rotates the nut 211 located on the rear side of the outer wall of the handle 209. The nut 211 presses the slide rail 203 under the action of the thread. The friction generated by the tight fit between the nut 211 and the slide rail 203 firmly fixes the handle 209 in the required position. The nut 211 prevents the handle 209 from returning to its original position and keeps the fixing mechanism 2 locked.

Claims

1. Impact mitigation bushing welding reinforcement device, including: A rotating shaft (1), a buffer mechanism (3) sleeved on the outside of the rotating shaft (1), and a fixing mechanism (2) installed in the middle of the outside of the buffer mechanism (3). The fixing mechanism (2) is characterized in that it includes a base (201) installed on the bottom of the outer side of the buffer mechanism (3), a fixing ring (202) is fixedly connected to the top front side of the base (201), a slide rail (203) is fixedly connected to the upper right side of the outer wall of the fixing ring (202), a slide groove (204) is provided inside the slide rail (203), a plurality of clamping blocks (205) are slidably connected to the front side of the fixing ring (202), a fixing rod (206) is fixedly connected to the front side of the clamping block (205), a rotating disk (207) is sleeved on the outer side of the fixing rod (206), and a fixing block (207) is fixedly connected to the right side of the outer wall of the rotating disk (207). 208), a handle (209) is fixedly connected to the middle of the rear side of the fixed block (208), a roller (210) is rotatably connected to the middle of the outer wall of the handle (209), the handle (209) passes through the slide groove (204) in the slide rail (203), the roller (210) is rotatably connected inside the slide groove (204), a nut (211) is threadedly connected to the rear side of the outer wall of the handle (209), a transmission cooperation structure is provided between the rotating disk (207) and the fixed rod (206) for driving the fixed rod (206) and the clamping block (205) to move towards the axis of the rotating shaft (1) when the rotating disk (207) rotates.

2. The impact-mitigating bushing welding reinforcement device according to claim 1, characterized in that, The buffer mechanism (3) includes a rubber pad (301) located in the innermost layer. The inner wall of the rubber pad (301) is fixedly connected with reinforcing ribs (302) around its perimeter. The reinforcing ribs (302) are arranged in an arc shape to distribute the concentrated impact force evenly along the circumference.

3. The impact-mitigating bushing welding reinforcement device according to claim 2, characterized in that, A honeycomb pad (303) is fixedly connected to the outer wall of the rubber pad (301), and a wire mesh pad (304) is fixedly connected to the outer wall of the honeycomb pad (303). The honeycomb pad (303) is used to dissipate medium-frequency impacts, and the wire mesh pad (304) is used to limit excessive deformation.

4. The impact-mitigating bushing welding reinforcement device according to claim 3, characterized in that, The wire mesh pad (304) is fitted with a fixing sleeve (305) at both the front and rear ends. Multiple arc plates (306) are fixedly connected around the outer perimeter of the fixing sleeve (305). The arc plate (306) has an arc surface that can convert radial force into tangential component force, which is used to improve the torsional stiffness of the bushing.

5. The impact-mitigating bushing welding reinforcement device according to claim 4, characterized in that, The buffer mechanism (3) forms a composite bushing, and the front and rear ends of the composite bushing are fixedly connected to a perforated constraint plate (307). The constraint plate (307) is used to balance the internal and external air pressure and suppress impact vibration.

6. The impact-mitigating bushing welding reinforcement device according to claim 1, characterized in that, The transmission and engagement structure is configured such that an arc-shaped guide groove is provided on the surface of the rotating disk (207), and the fixed rod (206) passes through the arc-shaped guide groove and slides in engagement with the rotating disk (207). When the rotating disk (207) rotates, the fixed rod (206) is driven to move radially through the trajectory of the arc-shaped guide groove.

7. The impact-mitigating bushing welding reinforcement device according to claim 1, characterized in that, The groove (204) extends in an arc shape along the length of the slide rail (203). When the handle (209) moves in the groove (204) via the roller (210), it can drive the fixed block (208) and the rotating disk (207) to rotate around the axis of the rotating shaft (1).

8. The impact-mitigating bushing welding reinforcement device according to claim 1, characterized in that, The nut (211) is used to fit tightly against the slide rail (203) when rotating, and fix the handle (209) at any position in the slide groove (204) by friction, thereby maintaining the fixed state of the clamping block (205) on the rotating shaft (1).

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