Tail clamping device with vibration-resistant input shaft

Abstract

The utility model discloses a tail clamping device with an anti-vibration input shaft. A box body; the power input shafts are arranged up and down; the device comprises a pair of lower swing seats, a pair of upper swing seats, a plurality of telescopic power mechanisms I and a plurality of groups of telescopic power mechanisms II, the telescopic ends of the telescopic power mechanisms I are hinged to the outer walls of the lower swing seats, and the telescopic ends of the telescopic power mechanisms II are hinged to the outer walls of the upper swing seats; the two groups of cylindrical roller bearings are arranged in the box body, each group of cylindrical roller bearings comprises cylindrical roller bearings which are arranged on the peripheral surfaces of the two ends of the power input shaft, and the peripheral surfaces of the cylindrical roller bearings form contact surfaces which are propped against the upper swing seat and the lower swing seat; and the middle parts of the bearing glands penetrate through the power input shaft and cover the flat end surfaces of the two ends of the lower swing seat and the upper swing seat. Due to the fact that the cylindrical roller bearings are additionally arranged at the two ends of the power input shaft, and the cylindrical roller bearing on one side of the power output end is the NUP flange cylindrical roller bearing, axial force can be effectively controlled, and pressure borne by unit area of radial force is reduced.

Description

A vibration-resistant clamp for input shafts Technical Field

[0001] This utility model relates to the field of steel rolling machinery technology, specifically to a clamping device for input shaft vibration resistance. Background Technology

[0002] In high-speed bar mills, the finishing mill tail clamp is a key piece of equipment and plays an irreplaceable role in daily production.

[0003] Normally, during normal use of the chuck, the speed is high and the clamping force is large. If the service life of the input shaft bearing of the chuck is too short, the cage will be damaged. The input end bearing of the chuck uses a deep groove ball bearing. During the installation process, the deep groove ball bearing bears both the radial clamping force and the axial thrust. Due to the long-term clamping action, the deep groove ball bearing is stressed when bearing the radial force, and the bearing cage is very easy to be damaged. This causes the chuck vibration value to be too high, abnormal noise and oil leakage. It cannot be effectively handled without stopping the machine. This situation is not conducive to on-site inspection and affects production efficiency.

[0004] Currently, the solution is to replace the bearings with the same model. This method can maintain the bearings' condition, but the bearings have a shorter lifespan. When production is tight, it is impossible to frequently stop the machine to replace the bearings, which affects a lot of production time, reduces production efficiency, and impacts the company's profits.

[0005] To reduce the labor intensity of employees, shorten maintenance and repair time, improve the operating rate, reduce maintenance time, reduce oil leakage, and reduce manpower, this application provides a replacement solution for the input shaft bearing of a high-speed bar clamp. Summary of the Invention

[0006] The technical problem to be solved by this utility model is to address the shortcomings of the existing technology by providing an input shaft anti-vibration clamp that can effectively control axial force and reduce the pressure per unit area of ​​radial force.

[0007] The technical problem to be solved by this utility model is achieved through the following technical solution: a vibration-resistant clamp for an input shaft, comprising;

[0008] Box;

[0009] A pair of power input shafts are arranged vertically, with the middle of the power input shaft placed inside the housing. One end of the power input shaft is the power input end, and the other end is the power output end.

[0010] A pair of lower swing seats and a pair of upper swing seats are provided. The pair of lower swing seats are located below the middle of a pair of power input shafts, and the pair of upper swing seats are located above the middle of a pair of power input shafts. Several telescopic power mechanisms I and several sets of telescopic power mechanisms II are installed on the top outer wall of the housing. The telescopic end of telescopic power mechanism I is hinged to the outer wall of the lower swing seat, and the telescopic end of telescopic power mechanism II is hinged to the outer wall of the upper swing seat.

[0011] Two sets of cylindrical roller bearings are placed inside the housing. Each set of cylindrical roller bearings includes cylindrical roller bearings mounted on the outer circumferential surfaces at both ends of the power input shaft. The outer circumferential surfaces of the cylindrical roller bearings form contact surfaces that abut against the upper and lower swing seats.

[0012] A pair of bearing caps, the middle of which is penetrated by the power input shaft and covers the flat end faces of the lower and upper swing seats.

[0013] The technical problem to be solved by this utility model can also be achieved through the following technical solution: the above-mentioned anti-vibration clamp for input shaft has a roller ring fixedly installed on the outer circumferential surface of the power output end of the power input shaft.

[0014] The technical problem to be solved by this utility model can also be achieved through the following technical solution: the above-mentioned input shaft anti-vibration clamp has keyways on both the power output end and the power output end of the power input shaft.

[0015] The technical problem to be solved by this utility model can also be achieved through the following technical solution: the cylindrical roller bearing located on the power output end side of the power input shaft of the above-mentioned input shaft anti-vibration clamp is a NUP flange cylindrical roller bearing.

[0016] Compared with the prior art, the beneficial technical effects of this utility model are:

[0017] By adding cylindrical roller bearings at both ends of the power input shaft, and using NUP flanged cylindrical roller bearings on the power output side, axial force can be effectively controlled, and the pressure per unit area of ​​radial force can be reduced. In other words, the radial force borne by a single disc bearing can be shared, reducing bearing damage during operation, reducing production losses caused by frequent downtime for bearing replacement, reducing labor intensity to a certain extent, reducing vibration caused by bearing damage, reducing safety hazards during maintenance, increasing production output, and increasing company profits.

[0018] Tangible benefits: Reduced production time and increased output; after being put into use, the number of maintenance visits is reduced by 4 compared to the original schedule, with each maintenance visit lasting 8 hours, saving 1920 minutes (32 hours) of time.

[0019] Profit = Time saved * Hourly output * Profit per ton of steel * Number of times per year + Bearing unit price * Quantity = 32 hours / year * 200 tons / hour * 200 yuan / ton + 1500 yuan / reel * 8 reels = 1.292 million yuan / year;

[0020] Intangible benefits: Reduced safety hazards, reduced workload, increased operational efficiency, and reduced downtime for maintenance and repair. Attached Figure Description

[0021] Figure 1 is a schematic diagram of the main structure of this utility model.

[0022] Reference numerals in the attached drawings: 1. Housing; 2. Power input shaft; 3. Power input end; 4. Power output end; 5. Roller ring; 6. Lower swing seat; 7. Upper swing seat; 8. Telescopic power mechanism I; 9. Telescopic power mechanism II; 10. Cylindrical roller bearing; 11. Bearing cover. Detailed Implementation

[0023] The specific technical solutions of this utility model are further described below with reference to the accompanying drawings, so as to enable those skilled in the art to further understand this utility model, without constituting a limitation on its rights.

[0024] Example 1, referring to Figure 1, an input shaft anti-vibration clamp includes;

[0025] Box 1, which is formed into a roughly square box structure;

[0026] A pair of vertically arranged power input shafts 2 are horizontally positioned, and their size can be selected according to the usage requirements. The middle part of the power input shaft 2 is placed inside the housing 1, with one end being the power input end 3 and the other end being the power output end 4. A roller ring 5 is fixedly installed on the outer circumferential surface of the power output end 4 of the power input shaft 2. Keyways are provided on both the power output end 4 and the power output end 4 of the power input shaft 2.

[0027] A pair of lower swing seats 6 and a pair of upper swing seats 7 are provided. Both the lower swing seats 6 and the upper swing seats 7 are formed into a roughly semi-hollow cylindrical shell structure. The pair of lower swing seats 6 are located below the middle of the pair of power input shafts 2, and the pair of upper swing seats 7 are located above the middle of the pair of power input shafts 2. Several telescopic power mechanisms I8 and several sets of telescopic power mechanisms II9 are installed on the top outer wall of the housing 1. The telescopic power mechanisms I8 and II9 can be cylinders. The top of the housing 1 can be reserved with openings for the telescopic ends of the telescopic power mechanisms I8 and several sets of telescopic power mechanisms II9 to extend and retract. The telescopic ends of the telescopic power mechanisms I8 are hinged to the outer wall of the lower swing seats 6, and the telescopic ends of the telescopic power mechanisms II9 are hinged to the outer wall of the upper swing seats 7.

[0028] Two sets of cylindrical roller bearings 10 are placed inside the housing 1. Each set of cylindrical roller bearings 10 includes cylindrical roller bearings 10 mounted on the outer peripheral surfaces of both ends of the power input shaft 2. The outer peripheral surfaces of the cylindrical roller bearings 10 form contact surfaces that abut against the upper swing seat 7 and the lower swing seat 6. The cylindrical roller bearing 10 located on the side of the power output end 4 of the power input shaft 2 is an NUP flange cylindrical roller bearing.

[0029] A pair of bearing caps 11, which can be formed into a roughly circular sheet structure, the shape and size of which can be selected according to the usage requirements. The purpose of their design is only to cover the outer end of the bearing to prevent external impurities from entering the bearing and causing damage to the bearing. The middle part is penetrated by the power input shaft 2 and is covered on the flat end surfaces of the lower swing seat 6 and the upper swing seat 7.

Claims

1. A vibration-resistant clamp for input shafts, characterized in that: It includes: a housing; a pair of vertically arranged power input shafts, with the middle of the power input shafts placed inside the housing, one end being the power input end and the other end being the power output end; a pair of lower swing seats and a pair of upper swing seats, the pair of lower swing seats being placed below the middle of the pair of power input shafts, and the pair of upper swing seats being placed above the middle of the pair of power input shafts; several telescopic power mechanisms I and several sets of telescopic power mechanisms II are installed on the top outer wall of the housing, the telescopic ends of telescopic power mechanisms I are hinged to the outer wall of the lower swing seats, and the telescopic ends of telescopic power mechanisms II are hinged to the outer wall of the upper swing seats; two sets of cylindrical roller bearings, which are placed inside the housing, each set of cylindrical roller bearings including cylindrical roller bearings installed on the outer circumferential surfaces of both ends of the power input shaft, the outer circumferential surfaces of the cylindrical roller bearings forming contact surfaces that abut against the upper and lower swing seats; and a pair of bearing caps, the middle of which is penetrated by the power input shaft and covers the flat end surfaces of both ends of the lower and upper swing seats.

2. The input shaft anti-vibration clamp according to claim 1, characterized in that: A roller ring is fixedly installed on the outer circumferential surface of the power output end of the power input shaft.

3. The input shaft anti-vibration clamp according to claim 1, characterized in that: Both the power input shaft and the power output shaft have keyways.

4. The input shaft anti-vibration clamp according to claim 1, characterized in that: The cylindrical roller bearing located on the power output end side of the power input shaft is a NUP flanged cylindrical roller bearing.

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