A drive roller shaft head dismounting device

Abstract

The utility model discloses a kind of transmission roller shaft head dismounting devices, belong to mechanical maintenance tool technical field, the device includes stress flange and shaft head fixing device, at least three adjusting screw holes are evenly distributed on the stress flange, the shaft head fixing device is half-round hoop structure, the half-round hoop structure includes fixed half ring and movable half ring, the fixed half ring is fixedly connected with stress flange, and the movable half ring is detachably connected with fixed half ring by connecting piece;At least one jack screw is equipped on the movable half ring, for fixing shaft head by outer surface;When using, by screwing bolt in adjusting screw hole and pressing transmission shaft end face, not depending on shaft head inner hole structure, shaft head is dismounted from transmission shaft using evenly distributed reaction force.The utility model is used to solve the technical problem that shaft head dismounting device in prior art relies on shaft head internal structure and has small application range.

Description

Technical Field

[0001] This utility model belongs to the field of mechanical repair tool technology, specifically relating to a transmission roller shaft head disassembly device. Background Technology

[0002] In large-size coating production lines, the main drive system typically uses a motor belt drive to power the pulley on the drive shaft. As the structure of LOW-E films becomes increasingly complex and coating production lines grow longer, the requirements for transmission precision also increase. Coating equipment operates in a high-vacuum environment (vacuum level must reach 1×10^-5 or higher) and requires a robust water-cooling system, excellent insulation, and a tight seal.

[0003] In existing technologies, the disassembly of the drive shaft head in vacuum magnetron sputtering coating equipment faces numerous challenges. On the one hand, the drive shaft assembly process requires high precision, incorporating vacuum sealing and insulation structures. On the other hand, traditional disassembly methods typically rely on the internal threaded hole structure of the shaft head. For example, CN215103506U discloses a quick disassembly device for the drive roller head of a vacuum magnetron sputtering coating system. This device uses a support assembly, an inertial block, and a connecting assembly, utilizing the impact force generated by the sliding of the inertial block to disassemble the shaft head. This device requires the rear end of the connecting rod to extend into the inner hole of the shaft head and connect with the threaded connection within the inner hole, limiting its applicability. Furthermore, impact-based disassembly poses potential risks to high-precision vacuum equipment.

[0004] Therefore, there is an urgent need to develop a transmission roller shaft head disassembly device that does not rely on the internal structure of the shaft head and has a wide range of applications, in order to solve the problems existing in the current technology. Utility Model Content

[0005] In order to overcome the shortcomings of the prior art, the purpose of this utility model is to provide a transmission roller shaft head disassembly device to solve the technical problem that the existing shaft head disassembly device relies on the internal structure of the shaft head and has a limited scope of application.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: This utility model provides a drive roller shaft head disassembly device, including a force-bearing flange and a shaft head fixing device; the force-bearing flange has at least three evenly distributed adjusting threaded holes; the shaft head fixing device is a semi-circular clamp structure, including a fixed half-ring and a movable half-ring, the fixed half-ring being fixedly connected to the force-bearing flange, and the movable half-ring being detachably connected to the fixed half-ring via a connector; the movable half-ring is provided with at least one set screw for fixing the shaft head through its outer surface. In use, by screwing a bolt into the adjusting threaded hole and pressing it against the end face of the drive shaft, the shaft head is disassembled from the drive shaft using a evenly distributed reaction force, without relying on the internal hole structure of the shaft head.

[0007] Preferably, the load-bearing flange has a central through hole, the diameter of which is larger than the outer diameter of the drive shaft and smaller than the maximum outer diameter of the shaft head, to accommodate the passage of the drive shaft.

[0008] Preferably, the fixing half-ring and the load-bearing flange are integrally formed or fixedly connected by welding, and the inner surface of the fixing half-ring is provided with anti-slip texture or elastic pad.

[0009] Preferably, the connector includes a connecting bolt and a nut. The fixed half-ring and the movable half-ring are respectively provided with corresponding connecting holes at both ends. The fixed half-ring and the movable half-ring are fastened together by the connecting bolt and the nut to form a complete clamp.

[0010] Preferably, there are two or three set screws, evenly distributed on the movable half ring, and the ends of the set screws are provided with anti-slip pads or spherical contact heads.

[0011] Preferably, there are four adjusting threaded holes, which are evenly distributed on the same circumference with the center of the load-bearing flange as the center. The included angle between two adjacent adjusting threaded holes is 90 degrees to ensure that the disassembly force is evenly distributed.

[0012] Preferably, the thickness of the load-bearing flange is 10mm-20mm, and the material is high-strength alloy steel; the inner diameter of the fixed half ring and the movable half ring matches the outer diameter of the shaft head to be disassembled, and the inner surface is provided with anti-slip texture.

[0013] Preferably, it also includes a guide positioning device, which includes at least two guide rods. One end of each guide rod is fixed to the load-bearing flange, and the other end is provided with a positioning end, which is used to keep the tool in a stable position relative to the drive shaft during disassembly.

[0014] Preferably, the inner surface of the movable semi-ring is provided with a replaceable elastic buffer layer, which is made of wear-resistant rubber or polyurethane material, with a thickness of 2mm-5mm and a hardness of 60-80 Shore A.

[0015] Preferably, the load-bearing flange is provided with a quick-release mechanism, which includes at least two symmetrically arranged handles and a locking mechanism. The handles are connected to the load-bearing flange by hinges, can be unfolded in the use state and fixed by the locking mechanism, and can be folded up in the non-use state for easy operation and storage.

[0016] Compared with the prior art, the present invention has the following beneficial effects: This invention provides a disassembly device for transmission roller shafts. By employing a semi-circular clamping structure and an external surface fixing method, it completely eliminates the reliance on the internal hole structure of the shaft head. It is applicable to various shaft heads without internal threads, with damaged internal holes, or with special structures, thus expanding its scope of application. The use of a uniformly distributed reaction force principle replaces the traditional impact-based disassembly, avoiding potential damage to high-precision vacuum coating equipment from severe vibrations and reducing equipment damage rates.

[0017] Furthermore, the central through-hole ensures that the tool and drive shaft are coaxial, avoiding eccentric forces during disassembly and improving the success rate of disassembly. The through-hole size design allows the disassembly force to act directly on the connection interface between the shaft end and the drive shaft, reducing energy loss and improving force transmission efficiency.

[0018] Furthermore, the one-piece molding or welding fixing method eliminates connection gaps, improves structural strength, and ensures no deformation during high-load disassembly. Anti-slip texture increases the coefficient of friction, effectively preventing the shaft head from slipping under high disassembly forces, significantly improving the disassembly success rate. Elastic pads disperse pressure, preventing damage to the shaft head surface, making it particularly suitable for shaft heads in coating equipment with high surface precision requirements, thus improving protection accuracy.

[0019] Furthermore, the bolt and nut connection provides adjustable tightening force, ensuring the clamp does not loosen under high disassembly forces, thus improving connection reliability. Standardized connectors facilitate quick installation and disassembly, reducing the time required for each clamp opening and closing operation. The tightness of the connecting bolts can be adjusted to accommodate shaft ends of different diameters, and a single tool can cover various shaft end size variations.

[0020] Furthermore, the evenly distributed set screws ensure uniform clamping force on the shaft head, preventing deformation. Anti-slip pads increase the coefficient of friction, significantly improving clamping reliability and preventing slippage even under maximum disassembly force. The spherical contact head automatically adjusts its angle to adapt to shaft heads of different shapes and surface conditions. Anti-slip pads or spherical contact heads disperse pressure, preventing indentations or scratches on the shaft head surface, maintaining shaft head accuracy, and are suitable for shaft heads with low surface hardness.

[0021] Furthermore, the four-point evenly distributed force structure ensures a completely uniform distribution of disassembly force, reducing the deformation rate of the shaft head during disassembly. The 90-degree symmetrical distribution forms a stable mechanical structure, preventing the tool from twisting or shifting during disassembly.

[0022] Furthermore, the 10-20mm thickness design ensures strength while controlling weight, improves resistance to deformation, and facilitates one-handed operation. High-strength alloy steel (40Cr) with a yield strength ≥800MPa can withstand a disassembly force ≥50kN, extending its service life. Anti-slip texture increases the surface friction coefficient, reducing clamp slippage. The inner diameters of the fixed and movable half-rings match the outer diameter of the shaft head to be disassembled, increasing the contact area, allowing for more even distribution of disassembly force, reducing localized stress, and protecting the shaft head surface.

[0023] Furthermore, the guide rod and its connection are designed to maintain the device's position relative to the drive shaft during disassembly. The locating end mates with the drive shaft end face to prevent the tool from rotating or shifting during disassembly.

[0024] Furthermore, the elastic buffer layer disperses pressure, reducing surface pressure on the shaft end and preventing damage to the high-precision shaft end surface. The elastic material absorbs minor vibrations, making the disassembly process smoother, reducing impact on precision equipment, and consequently lowering the equipment failure rate. A specific hardness range (60-80 Shore hardness) balances friction and elasticity, providing stable gripping force while protecting the shaft end.

[0025] Furthermore, the quick-release mechanism can be unfolded and secured by a locking mechanism when in use, and folded away when not in use for easy operation and storage. The unfolded handle provides an ergonomic grip position, reducing the force required for operation and alleviating operator fatigue. The folding design reduces the device's storage volume, facilitating storage and transportation in compact spaces. The locking mechanism ensures the handle is secure during use, preventing accidental folding and improving operational safety. The quick-release / folding mechanism reduces preparation time significantly, increasing equipment availability. Attached Figure Description

[0026] Figure 1 This is a schematic diagram showing the working state of the disassembly device of this utility model in conjunction with the transmission roller shaft head; Figure 2 This is a front view of the disassembly device of this utility model; Figure 3 This is a top view of the disassembly device of this utility model; Figure 4 This is a schematic diagram of the disassembly device of this utility model.

[0027] Among them, 1-load-bearing flange; 2-adjusting threaded hole; 3-fixed half ring; 4-movable half ring; 5-connecting bolt; 6-set screw; 7-drive shaft; 8-shaft head; 9-center through hole; 11-elastic buffer layer. Detailed Implementation

[0028] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of the present invention.

[0029] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this utility model are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of the utility model described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0030] The present invention will now be described in further detail with reference to the accompanying drawings: Example 1 like Figure 1-3 As shown in Embodiment 1, a drive roller shaft head disassembly device includes a load-bearing flange 1 and a shaft head fixing device. The load-bearing flange 1 is made of high-strength alloy steel (40Cr) with a thickness of 15mm and a diameter of 120mm. Four adjusting threaded holes 2 are evenly distributed along the circumference of the load-bearing flange 1 for installing adjusting bolts. The four adjusting threaded holes 2 are distributed on a circumference with a diameter of 90mm centered on the center of the load-bearing flange 1, and the included angle between two adjacent adjusting threaded holes 2 is 90 degrees, ensuring uniform distribution of disassembly force.

[0031] The load-bearing flange 1 has a central through hole 9 with a diameter of 40mm, which is slightly larger than the outer diameter of the drive shaft 7 (38mm) and smaller than the maximum outer diameter of the shaft head 8 (45mm), to accommodate the passage of the drive shaft 7. The load-bearing flange 1 also has two symmetrical handles, which are hinged to the flange and equipped with a locking mechanism. These handles can be unfolded and secured during use, and folded away when not in use for easy operation and storage.

[0032] The shaft head fixing device is a semi-circular clamp structure, including a fixed half-ring 3 and a movable half-ring 4. The fixed half-ring 3 is fixedly connected to the load-bearing flange 1 by welding, forming an integral structure. The inner diameter of the fixed half-ring 3 is 45mm, matching the outer diameter of the shaft head 8 to be disassembled. The inner surface has anti-slip textures with a depth of 0.5mm to improve the friction with the shaft head 8. The movable half-ring 4 is detachably connected to the fixed half-ring 3 by connecting bolts 5. Corresponding connecting holes are provided at both ends of the movable half-ring 4 and the fixed half-ring 3. The fixed half-ring 3 and the movable half-ring 4 are fastened together by two connecting bolts 5 and matching nuts to form a complete clamp.

[0033] Two set screws 6 are symmetrically arranged on the movable half-ring 4, and the ends of the set screws 6 are equipped with anti-slip ball-shaped contact heads. Tightening the set screws 6 can make the movable half-ring 4 firmly grip the outer surface of the shaft head 8, ensuring that the shaft head 8 is firmly connected to the disassembly device during disassembly. Figure 4 As shown, the inner surface of the movable semi-ring 4 is also provided with a replaceable elastic buffer layer 11. The elastic buffer layer 11 is made of polyurethane material, with a thickness of 3mm and a hardness of 70 Shore A, which effectively prevents damage to the surface of the shaft head 8 during disassembly.

[0034] Example 2 This embodiment 2 provides a transmission roller shaft head disassembly device, which, based on the device in embodiment 1, further includes a guide positioning device. The guide positioning device includes two guide rods, one end of which is fixed to the force-bearing flange 1 by a thread, and the other end is provided with a tapered positioning end, which is used to keep the tool stable relative to the transmission shaft 7 during disassembly, prevent the tool from shifting during disassembly, and improve disassembly accuracy and safety.

[0035] like Figure 4 As shown, in use, first remove the accessories around the shaft head 8 that needs to be disassembled from the drive shaft 7, exposing the shaft head 8. Then, place the disassembly device of this embodiment onto the shaft head 8, so that the shaft head 8 passes through the central through hole 9 of the load-bearing flange 1. Next, place the fixed half-ring 3 and the movable half-ring 4 on both sides of the shaft head 8 respectively, connect them with the connecting bolts 5, and rotate the set screw 6 to tighten the movable half-ring 4 to secure the shaft head 8. Then, place the positioning end of the guide rod against the positioning hole on the drive shaft 7 to ensure the tool position is stable. Finally, install the adjusting bolts in the four adjusting threaded holes 2 of the load-bearing flange 1, so that the adjusting bolts 2 press against the end face of the drive shaft 7, and tighten the four adjusting bolts evenly. The shaft head 8 is pulled out from the drive shaft 7 by the evenly distributed reaction force, completing the disassembly.

[0036] This invention's disassembly device is specifically designed for the unique structure of the drive shaft in coating equipment, enabling the disassembly of the shaft ends. Through practical application in production, it has been verified that using this tool reduces the disassembly and installation time of the shaft ends at both ends of a single drive shaft from 40 minutes to approximately 8 minutes, increasing efficiency by about 80%. This significantly reduces equipment downtime and lowers maintenance costs. Particularly when dealing with shaft ends without internal threaded holes, this invention offers significant advantages over existing technologies.

[0037] The above content is only for illustrating the technical concept of this utility model and should not be construed as limiting the scope of protection of this utility model. Any modifications made to the technical solution based on the technical concept proposed in this utility model shall fall within the scope of protection of the claims of this utility model.

Claims

1. A device for disassembling the head of a transmission roller shaft, characterized in that, include: The load-bearing flange (1) and the shaft head fixing device are provided. At least three adjusting threaded holes (2) are evenly distributed on the load-bearing flange (1). The shaft head fixing device is a semi-circular clamp structure. The semi-circular clamp structure includes a fixed half ring (3) and a movable half ring (4). The fixed half ring (3) is fixedly connected to the load-bearing flange (1). The movable half ring (4) is detachably connected to the fixed half ring (3) through a connector. The movable half ring (4) is provided with at least one set screw (6) for fixing the shaft head through the outer surface.

2. The transmission roller shaft head disassembly device according to claim 1, characterized in that, The load-bearing flange (1) has a central through hole (9) at its center. The diameter of the central through hole (9) is greater than the outer diameter of the drive shaft (7) and less than the maximum outer diameter of the shaft head (8), and is used to accommodate the drive shaft (7) to pass through.

3. The transmission roller shaft head disassembly device according to claim 1 or 2, characterized in that, The fixed half ring (3) and the load-bearing flange (1) are integrally formed or fixedly connected by welding. The inner surface of the fixed half ring (3) is provided with anti-slip texture or elastic pad.

4. The transmission roller shaft head disassembly device according to claim 1, characterized in that, The connector includes a connecting bolt (5) and a nut. The fixed half ring (3) and the movable half ring (4) are respectively provided with corresponding connecting holes at both ends. The fixed half ring (3) and the movable half ring (4) are fastened together by the connecting bolt (5) and the nut to form a complete clamp.

5. The transmission roller shaft head disassembly device according to claim 1, characterized in that, The number of set screws (6) is two or three, evenly distributed on the movable half ring (4), and the ends of the set screws (6) are provided with anti-slip pads or spherical contact heads.

6. The transmission roller shaft head disassembly device according to claim 1, characterized in that, The number of the adjusting threaded holes (2) is four, which are evenly distributed on the same circumference with the center of the force-bearing flange (1) as the center, and the included angle between two adjacent adjusting threaded holes (2) is 90 degrees.

7. The transmission roller shaft head disassembly device according to claim 1, characterized in that, The thickness of the load-bearing flange (1) is 10mm-20mm and the material is high-strength alloy steel; the inner diameter of the fixed half ring (3) and the movable half ring (4) matches the outer diameter of the shaft head (8) to be disassembled, and the inner surface of the fixed half ring (3) and the movable half ring (4) is provided with anti-slip texture.

8. The transmission roller shaft head disassembly device according to claim 1, characterized in that, It also includes a guide positioning device, which includes at least two guide rods. One end of each guide rod is fixed to the force-bearing flange (1), and the other end is provided with a positioning end.

9. The transmission roller head disassembly device according to claim 1, characterized in that, The inner surface of the movable semi-ring (4) is provided with a replaceable elastic buffer layer (11), which is made of wear-resistant rubber or polyurethane material, with a thickness of 2mm-5mm and a hardness of 60-80 Shore.

10. The transmission roller head disassembly device according to claim 1, characterized in that, The load-bearing flange (1) is provided with a quick disassembly mechanism, which includes at least two symmetrically arranged handles and a locking mechanism. The handles are connected to the load-bearing flange (1) by a hinge.

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