Rolling mill gearbox oil slinger dismounting tool

Abstract

The utility model relates to the technical field of speed reducer maintenance, in particular to an oil slinger dismounting tool for a rolling mill gearbox, which comprises a three-section type fast-assembly clamp and a three-jaw type hydraulic puller, three holding arms of the fast-assembly clamp are matched to hold an oil slinger, the hydraulic puller is detachably screwed with connecting nuts on the three holding arms of the fast-assembly clamp through three long screw rods, and the three long screw rods are connected with the fast-assembly clamp. A hydraulic ejector rod is installed in the center of a triangular supporting frame of the hydraulic puller, and the hydraulic ejector rod coaxially abuts against the outer end face of the gear shaft and is used for applying force to pull the three holding arms and the oil slinger. Three replaceable hooping sleeves are correspondingly arranged on the inner sides of three embracing arms of the fast-assembling clamp, a C-shaped clamping groove used for clamping an oil slinger is formed in the inner side of each hooping sleeve, and the hooping sleeves are connected with the cambered surface T-shaped grooves in the inner sides of the embracing arms in a sliding and inserted mode through the cambered surface T-shaped tables of the connecting bases. According to the dismounting tool, the oil slinger is locked through the fast-assembling clamp, operation is fast and reliable, the dismounting tool can be switched to be suitable for oil slingers with different outer diameters, and the hydraulic puller enables drawing operation of the oil slinger to be labor-saving and safe.

Description

Technical Field

[0001] This utility model belongs to the field of speed reducer maintenance technology, specifically relating to a tool for disassembling the oil slinger ring of a rolling mill gearbox. Background Technology

[0002] A rolling mill is a processing device that shapes metal materials by rolling them with rollers. Rolling mills can be divided into cold rolling mills and hot rolling mills. The rolling mill gearbox (reducer) is a key component of the rolling mill equipment. During operation, the gears, gear shafts, and bearings inside the rolling mill gearbox all require lubricating oil for lubrication and cooling. The bottom of the rolling mill gearbox typically has an oil sump for storing lubricating oil. During gear shaft rotation, an oil slinger continuously carries the lubricating oil from the sump to the gear shaft above the lubricating oil level, providing good lubrication and cooling for the gear shaft and bearings. When the oil slinger is worn or damaged, it needs to be replaced promptly. However, the oil slinger is fitted onto the gear shaft of the rolling mill gearbox, making disassembly difficult. Furthermore, the lack of specialized tools for disassembling and repairing oil slingers results in lengthy disassembly and replacement times, severely impacting the rolling mill's maintenance efficiency and equipment utilization. Therefore, there is an urgent need to design a maintenance tool that facilitates the disassembly of the oil slinger in the rolling mill gearbox to improve the efficiency of oil slinger maintenance and replacement. Utility Model Content

[0003] In view of the above situation, this utility model provides a tool for disassembling the oil slinger ring of a rolling mill gearbox, which can effectively improve the disassembly and maintenance efficiency of the oil slinger ring and save the overall maintenance time of the rolling mill equipment.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] A tool for removing an oil slinger ring from a rolling mill gearbox includes a gear shaft of the rolling mill gearbox and an oil slinger ring sleeved on the gear shaft. It also includes a clamping assembly for tightening the oil slinger ring and a puller assembly for pulling out the oil slinger ring. The clamping assembly is a three-section quick-release clamp, and the puller assembly is a three-jaw hydraulic puller.

[0006] The three-section quick-release clamp includes three arc-shaped clamping arms for engaging and clamping the oil slinger ring. Three connecting nuts are welded to the outer sides of the three clamping arms. The three-jaw hydraulic puller includes a triangular support frame. The three corners of the support frame are detachably screwed to the three connecting nuts via three long screws, allowing the support frame to be mounted parallel to the front of the three-section quick-release clamp. A hydraulic push rod is installed at the center of the support frame, extending in the front-rear direction. The telescopic end of the hydraulic push rod can coaxially press against the outer end face of the gear shaft, applying force to pull out the three clamping arms and the oil slinger ring.

[0007] Furthermore, the three arms of the three-section quick-release clamp can be connected end to end to form an openable circular clamp structure. The two connection points in the middle are rotatably connected by a hinge structure, and the connection points at both ends are detachably connected by locking bolts.

[0008] Furthermore, the inner sides of the three clamping arms are provided with three replaceable arc-shaped clamping sleeves. The inner diameter of the clamping sleeves is adapted to the outer diameter of the oil slinger ring to be disassembled. Each clamping sleeve has an inverted groove on its inner side for engaging and locking the oil slinger ring. The three clamping sleeves are detachably engaged with the three clamping arms via three connecting seats. The inner side of the connecting seat is fixedly connected to the corresponding clamping sleeve. The inner side of the clamping arm has an arc-shaped T-groove. The outer side of the connecting seat is integrally formed with an arc-shaped T-shaped platform that slides into the arc-shaped T-groove.

[0009] Furthermore, the hydraulic push rod is a manual hydraulic cylinder, and a manual pressure rod is provided at the tail end of the manual hydraulic cylinder for manually pressurizing the hydraulic oil in the manual hydraulic cylinder. A pressure pin is coaxially fixed to the telescopic end of the manual hydraulic cylinder to facilitate quick positioning of the push rod at the axial center position on the outer end face of the gear shaft.

[0010] This utility model also includes other components that enable its normal use, all of which are conventional means in the field. In addition, devices or components not limited in this utility model, such as three-section quick-release clamps and three-jaw hydraulic pullers, all adopt existing technologies in the field.

[0011] The beneficial effects of this utility model are as follows:

[0012] The rolling mill gearbox oil slinger ring disassembly tool provided by this utility model adopts a three-section quick-release clamp structure, making the clamping operation of the oil slinger ring faster and more reliable, thus saving maintenance time. By adding a clamping sleeve with an interchangeable inner diameter to the inside of the quick-release clamp, the disassembly tool can be switched to be used with oil slinger rings of different outer diameters, making it multi-purpose and eliminating the need to manufacture various specifications of matching disassembly tools. By adding a hydraulic puller device to the front of the quick-release clamp, the pulling of the oil slinger ring becomes more labor-saving and safer, helping to reduce the labor intensity of maintenance work and improve the safety of maintenance work. Attached Figure Description

[0013] Figure 1 This is a three-dimensional structural diagram of the oil slinger ring disassembly tool of this utility model after the clamping sleeve has been removed;

[0014] Figure 2 for Figure 1 A front view of the three-section quick-release clamp after removing the three-jaw hydraulic puller;

[0015] Figure 3 for Figure 2 A schematic diagram of the cross-sectional structure of the connecting nut, clamping arm, connecting seat and clamping sleeve along line AA. Detailed Implementation

[0016] The technical solution of this utility model will be clearly and completely described below with reference to specific embodiments. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments.

[0017] It should be noted that the terms "upper," "lower," "front," "back," "inner," and "outer," which indicate direction or positional relationship, are based on the attached drawings and are used only for ease of description.

[0018] Example

[0019] like Figure 1-3 As shown, a tool for disassembling an oil slinger ring in a rolling mill gearbox includes a gear shaft (not shown) of the rolling mill gearbox and an oil slinger ring 1 sleeved on the gear shaft. It also includes a clamping assembly for tightening the oil slinger ring and a puller assembly for pulling out the oil slinger ring. The clamping assembly is a three-section quick-release clamp, and the puller assembly is a three-jaw hydraulic puller. Both the three-section quick-release clamp and the three-jaw hydraulic puller utilize existing technologies, but with certain modifications. For example, a replaceable clamping sleeve is added to the inside of the three-section quick-release clamp, and connecting nuts are added to the outside of its three clamping arms. Simultaneously, the three claws of the three-jaw hydraulic puller are replaced with three long screws to facilitate screwing into the three connecting nuts of the quick-release clamp.

[0020] The three-section quick-release clamp includes three arc-shaped clamping arms 2 for engaging and clamping the oil slinger ring. The three clamping arms are connected end to end to form an openable and closable annular clamping structure. The two connection points in the middle are rotatably connected by hinge structures 3, and the connection points at both ends are detachably connected by locking bolts 4. The inner side of the three clamping arms is also provided with three replaceable arc-shaped clamping sleeves 5. The inner diameter of the clamping sleeves is adapted to the outer diameter of the oil slinger ring to be disassembled, so as to facilitate the disassembly of oil slingers with different outer diameters. The inner side of each clamping sleeve is provided with a U-shaped groove 6 for engaging and clamping the oil slinger ring. The three clamping sleeves are detachably engaged with the three clamping arms by three connecting seats 7. The inner side of the connecting seat is fixedly connected to the corresponding clamping sleeve. The inner side of the clamping arm is provided with an arc-shaped T-groove 8. The outer side of the connecting seat is integrally formed with an arc-shaped T-shaped platform 9 that slides into the arc-shaped T-groove.

[0021] Three connecting nuts 10 are welded to the outer sides of the three clamping arms. The three-jaw hydraulic puller includes a triangular support frame 11. The three corners of the support frame are respectively detachably screwed to the three connecting nuts via three long screw rods 12. The connecting nuts are ear-shaped blind hole nuts with one end open and the other end closed in the middle of the internal threaded hole, so that the thread depth of the long screw rods is consistent. The three long screw rods are all long screw rods of the same specification with threads at both ends and smooth rods in the middle, so that the support frame is mounted in parallel in front of the three-section quick-release clamp to ensure that the pulling force and speed of the quick-release clamp and oil slinger ring are consistent. Furthermore, the support frame and the three-section quick-release clamp can be detached. After detachment, the support frame will not hinder the unfolding and tightening of the three-section quick-release clamp.

[0022] A hydraulic push rod 13 is installed at the center of the support frame, which is arranged in the front-to-back direction. The telescopic end of the hydraulic push rod can coaxially press against the outer end face of the gear shaft to apply force to pull out the three clamping arms and the oil slinger ring. The hydraulic push rod is a manual hydraulic cylinder. The tail end of the manual hydraulic cylinder is equipped with a manual pressure rod 14 to manually pressurize the hydraulic oil in the manual hydraulic cylinder. The telescopic end of the manual hydraulic cylinder is coaxially fixed with a pressure pin 15, which facilitates quick positioning at the axial center position on the outer end face of the gear shaft.

[0023] The working principle of this utility model is as follows:

[0024] When disassembling the oil slinger ring of the rolling mill gearbox, first tighten the three-section quick-release clamp around the outer circumference of the oil slinger ring. Then, install the three-jaw hydraulic puller in front of the quick-release clamp using three long screws. Then, continuously apply pressure with a manual lever to gradually extend the telescopic end of the hydraulic puller until the pressure pin touches the center of the gear shaft. Continue to apply pressure to gradually pull out the support frame of the hydraulic puller along with the quick-release clamp, and the oil slinger ring will also be gradually pulled out, thus completing the disassembly of the oil slinger ring.

[0025] The technical solution of this utility model is not limited to the specific embodiments described above. Without departing from the scope and spirit of the described embodiments, many modifications and changes will be obvious to those skilled in the art. Any technical modifications made within the spirit and principles of this utility model shall fall within the protection scope of this utility model.

Claims

1. A tool for disassembling an oil slinger ring in a rolling mill gearbox, comprising a gear shaft of the rolling mill gearbox and an oil slinger ring sleeved on the gear shaft, characterized in that: It also includes a clamp kit for tightening the oil slinger ring and a puller kit for pulling out the oil slinger ring. The clamp kit is a three-section quick-release clamp, and the puller kit is a three-jaw hydraulic puller. The three-section quick-release clamp includes three arc-shaped clamping arms for engaging and clamping the oil slinger ring. Three connecting nuts are welded to the outer sides of the three clamping arms. The three-jaw hydraulic puller includes a triangular support frame. The three corners of the support frame are detachably screwed to the three connecting nuts by three long screws. A hydraulic push rod is installed at the center of the support frame in the front-back direction. The telescopic end of the hydraulic push rod can coaxially press against the outer end face of the gear shaft to apply force to pull out the three clamping arms and the oil slinger ring.

2. The tool for disassembling the oil slinger ring of a rolling mill gearbox according to claim 1, characterized in that: The three arms of the three-section quick-release clamp can be connected end to end to form an openable circular clamp structure. The two connection points in the middle are rotatably connected by a hinge structure, and the connection points at both ends are detachably connected by locking bolts.

3. The tool for disassembling the oil slinger ring of a rolling mill gearbox according to claim 1, characterized in that: The inner sides of the three clamping arms are also provided with three replaceable arc-shaped clamping sleeves. The inner side of each clamping sleeve is provided with a U-shaped groove for engaging and locking the oil slinger ring. The three clamping sleeves are detachably engaged with the three clamping arms through three connecting seats. The inner side of the connecting seat is fixedly connected to the corresponding clamping sleeve. The inner side of the clamping arm is provided with an arc-shaped T-groove. The outer side of the connecting seat is integrally formed with an arc-shaped T-shaped platform that slides into the arc-shaped T-groove.

4. The tool for disassembling the oil slinger ring of a rolling mill gearbox according to claim 1, characterized in that: The hydraulic push rod is a manual hydraulic cylinder, and a manual pressure rod is provided at the tail end of the manual hydraulic cylinder. A pressure pin is coaxially fixed to the telescopic end of the manual hydraulic cylinder.

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