Loop through-wall shaft

Abstract

The utility model relates to the technical field of loop wall penetration, and discloses a loop wall penetration shaft which comprises a loop lifting arm, a shaft head is fixed at the top end of the loop lifting arm, a ball bearing is rotatably arranged on the side wall of the shaft head, the ball bearing is rotatably connected with a bearing seat, and the distance of the bearing seat is convenient to adjust. And the bearing seat is provided with a through-wall shaft sleeve for conveniently adjusting the outer diameter of the loop. The loop through-wall shaft is convenient to directly refit on line, does not need to complete equipment off-line or cut off the steel shaft sleeve by gas cutting, does not need to use electric welding, is convenient to disassemble and replace, not only is convenient to adjust to adapt to different high-speed wire rod rolling mills, but also can prevent the machine from being abraded by concave corners, reduces maintenance, reduces repair cost, and improves production efficiency. The bearing lubricating device has the oil-gas lubricating capacity, can continuously lubricate the bearing by using an online oil-gas system, changes the rigid requirement of the through-wall shaft copper sleeve on grease lubrication, does not need regular oil supplementation, reduces the labor intensity of maintenance, and improves the lubricating effect at the same time.

Description

Technical Field

[0001] This utility model relates to the field of flexible through-wall technology, specifically a flexible through-wall shaft. Background Technology

[0002] Currently, high-speed wire rod mills typically use loopers to detect and adjust the speed relationship between stands, eliminate the impact of dynamic speed changes, reduce tension variations, and ensure the dimensional accuracy of products from high-speed wire rod mills. During production, a certain amount of tension is generated when adjacent stands roll workpieces, and the intervention of loopers can eliminate this tension to a certain extent. In addition, loopers can also absorb excess rolled material, preventing steel buildup and accidents. As a key supporting equipment for high-speed wire rod mills, loopers play a crucial role in the entire production process.

[0003] Traditional through-wall shaft assemblies consist of a through-wall shaft and two bearing housings. The outer side has a round shaft head. When retrofitting, the entire equipment needs to be taken offline or the steel bushing needs to be removed by gas cutting or welding. Furthermore, the outer steel bushing of the loose through-wall shaft is supported by a copper bushing. Long-term use will increase the repair or replacement costs due to wear of the copper bushing. Utility Model Content

[0004] The purpose of this utility model is to provide a loose through-wall shaft to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a loose through-wall shaft, comprising a lifting arm, a shaft head fixed to the top of the lifting arm, a ball bearing rotatably mounted on the side wall of the shaft head, a bearing seat rotatably connected to the ball bearing for easy distance adjustment, and a through-wall shaft sleeve for easy adjustment of the outer diameter of the loose sleeve provided in the bearing seat, the bearing seat comprising:

[0006] Right positioning sleeve, which is rotatably connected to the ball bearing on the right side;

[0007] The left positioning sleeve is rotatably connected to the ball bearing on the left side.

[0008] Preferably, a telescopic sleeve passes through the right positioning sleeve, and the passage is rotatably connected, with the outer wall of the telescopic sleeve and the left positioning sleeve being threadedly connected.

[0009] Preferably, a connecting cylinder is fixed to the side wall of the telescopic sleeve, the connecting cylinder passing through the ball bearing and the shaft head on the right side, and the passage is rotatably connected.

[0010] Preferably, a square plate is fixed to the right side wall of the connecting cylinder, the left side of the square plate is attached to the right side wall of the right shaft head, and a handle is fixed to the right side wall of the square plate.

[0011] Preferably, the through-wall bushing includes a limiting strip, which is fixedly installed on the outer walls of the right positioning sleeve and the left positioning sleeve, and an outer steel bushing slides on the side wall of the limiting strip.

[0012] Preferably, the outer steel bushing has a telescopic groove on its side wall, through which the telescopic bushing passes and is slidably connected.

[0013] Compared with the prior art, the present invention provides a loose-fitting through-wall shaft, which has the following beneficial effects:

[0014] 1. This slip-on through-wall shaft, with its right positioning sleeve, left positioning sleeve, telescopic sleeve, connecting cylinder, square plate and handle, is easy to modify directly online without the need to remove the entire equipment or use gas cutting to remove the steel shaft sleeve, nor does it require electric welding.

[0015] 2. This slip-on through-wall shaft, with its limit strip, outer steel bushing, telescopic groove, and telescopic bushing, is easy to disassemble and replace. This facilitates adjustment to adapt to different high-speed wire rod mills and avoids wear on the machine caused by the recessed corners, reducing maintenance and lowering repair costs. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the three-dimensional structure of the main body of this utility model;

[0017] Figure 2 This is a schematic diagram of the full cross-section of the present invention;

[0018] Figure 3 This is a schematic diagram of the bearing housing structure of this utility model;

[0019] Figure 4 This is a schematic diagram of the full cross-sectional structure of the bearing housing of this utility model.

[0020] In the diagram: 1. Lifting arm; 2. Shaft head; 3. Ball bearing; 4. Bearing housing; 41. Right positioning sleeve; 42. Left positioning sleeve; 43. Telescopic sleeve; 44. Connecting cylinder; 45. Square plate; 46. Handle; 5. Through-wall bushing; 51. Limiting strip; 52. Outer steel bushing; 53. Telescopic groove; 54. Telescopic bushing. Detailed Implementation

[0021] like Figures 1-4As shown, this utility model provides a technical solution: a loose through-wall shaft, including a lifting arm 1, with a shaft head 2 fixed to the top of the lifting arm 1. The shaft head 2 is modified to be square. Compared with a round shaft head 2, the square shaft head 2 is easier to position and has a higher anti-rotation capability, and can better transmit rotational torque. The round shaft head 2 is prone to slippage when transmitting torque. In addition, when using the square shaft head 2 to install the lifting arm 1, there is no need to use electric welding for fixing. The side wall of the shaft head 2 has a rotatable ball bearing 3, and the ball bearing 3 is rotatably connected to a bearing seat 4 for easy distance adjustment. The bearing seat 4 is provided with... The wall-mounted bushing 5 allows for easy adjustment of the outer diameter of the loose sleeve. The original steel bushing 52 of the wall-mounted bushing is now suspended, and the copper bushing is replaced by two ball bearings 3. An oil-air system continuously lubricates the ball bearings 3, effectively preventing shaft wear. The ball bearings 3 also have a longer service life than the copper bushing. The easily worn steel bushing is eliminated, and the sleeve has oil-air lubrication capability. The online oil-air system can continuously lubricate the ball bearings 3, changing the rigid requirement of the wall-mounted bushing 5 for grease lubrication. There is no need for periodic oil replenishment, reducing the labor intensity of maintenance and improving the lubrication effect.

[0022] The aforementioned bearing housing 4 includes a right positioning sleeve 41, a left positioning sleeve 42, a telescopic sleeve 43, a connecting cylinder 44, a square plate 45, and a handle 46. The right positioning sleeve 41 is rotatably connected to the ball bearing 3 on the right side, and the left positioning sleeve 42 is rotatably connected to the ball bearing 3 on the left side. The telescopic sleeve 43 passes through the right positioning sleeve 41 and is rotatably connected at the penetration point. The outer wall of the telescopic sleeve 43 is threadedly connected to the left positioning sleeve 42. The rotation of the connecting cylinder 44 drives the telescopic sleeve 43 to rotate. The connecting cylinder 44 is fixed to the side wall of the telescopic sleeve 43. The connecting cylinder 44 passes through the ball bearing 3 on the right side and the shaft head 2 and is rotatably connected at the penetration point. A square plate 45 is fixed to the right side wall of the connecting cylinder 44. The rotation of the square plate 45 drives the connecting cylinder 44 to rotate. The left side of the square plate 45 is attached to the right side wall of the right shaft head 2. A handle 46 is fixed to the right side wall of the square plate 45. Rotating the handle 46 drives the square plate 45 to rotate. The telescopic sleeve 43 and the left positioning sleeve 42 rotate relative to each other, changing the distance between the telescopic sleeve 43 and the left positioning sleeve 42, so that the distance between the left positioning sleeve 42 and the right positioning sleeve 41 is adjustable. This bearing seat 4 is easy to directly modify online without the need to take the whole machine off the line or use gas cutting to remove the steel bushing, and without the need to use electric welding.

[0023] The aforementioned through-wall bushing 5 includes a limiting strip 51, an outer steel bushing 52, a telescopic groove 53, and a telescopic bushing 54. The limiting strip 51 is fixedly installed on the outer walls of the right positioning sleeve 41 and the left positioning sleeve 42. When the distance between the right positioning sleeve 41 and the left positioning sleeve 42 changes, the limiting strip 51 is moved to change the distance. The outer steel bushing 52 slides on the side wall of the limiting strip 51, and the limiting strip 51 moves the outer steel bushing 52. The limiting strip 51 is made of rubber and limits the movement of the outer steel bushing 52. The outer steel bushing 52 is detachable for easy movement. Replacement is performed by selecting an outer steel bushing 52 with a suitable outer diameter for installation. The outer steel bushing 52 has a telescopic groove 53 on its side wall, through which a telescopic bushing 54 passes, and the connection at the passage is slidable. When the right positioning sleeve 41 and the left positioning sleeve 42 are far apart, the telescopic bushing 54 compensates for the outer steel bushing 52. This through-wall bushing 5 is easy to disassemble and replace, which not only facilitates adjustment to adapt to different high-speed wire rod mills, but also avoids wear on the machine caused by the recessed corners, reduces maintenance, and lowers repair costs.

[0024] Working principle: Rotate handle 46, which drives square plate 45 to rotate, square plate 45 drives connecting cylinder 44 to rotate, connecting cylinder 44 drives telescopic sleeve 43 to rotate. Press and hold left positioning sleeve 42, telescopic sleeve 43 and left positioning sleeve 42 rotate relative to each other, changing the distance between telescopic sleeve 43 and left positioning sleeve 42, so that the distance between left positioning sleeve 42 and right positioning sleeve 41 is adjustable.

[0025] When the distance between the right positioning sleeve 41 and the left positioning sleeve 42 changes, it drives the limiting strip 51 to change distance. The limiting strip 51 drives the outer steel bushing 52 to move. The limiting strip 51 is made of rubber and limits the outer steel bushing 52. When it is necessary to adjust the outer diameter of the outer steel bushing 52, the outer steel bushing 52 can be directly removed and replaced. Select an outer steel bushing 52 with a suitable outer diameter for installation. When the right positioning sleeve 41 and the left positioning sleeve 42 are close, the telescopic bushing 54 is mostly in the telescopic groove 53. When the right positioning sleeve 41 and the left positioning sleeve 42 are far apart, the telescopic bushing 54 compensates for the outer steel bushing 52 to prevent the center of the outer steel bushing 52 from being concave.

[0026] The present invention has been described in detail above. However, modifications or improvements can be made to it, which will be obvious to those skilled in the art. Therefore, any modifications or improvements that do not depart from the spirit of the present invention are within the protection scope of the present invention.

Claims

1. A slip-on through-wall shaft, comprising a lifting arm (1), characterized in that: The top end of the lifting arm (1) is fixed with a shaft head (2), and a ball bearing (3) is rotatably mounted on the side wall of the shaft head (2). The ball bearing (3) is rotatably connected to a bearing seat (4) for easy adjustment of distance. The bearing seat (4) is provided with a through-wall bushing (5) for easy adjustment of the outer diameter of the loose sleeve. The bearing seat (4) includes: Right positioning sleeve (41), which is rotatably connected to the ball bearing (3) on the right side; The left positioning sleeve (42) is rotatably connected to the ball bearing (3) on the left side.

2. The loose-fitting through-wall shaft according to claim 1, characterized in that: The right positioning sleeve (41) has a telescopic sleeve (43) passing through it, and the passage is rotatably connected. The outer wall of the telescopic sleeve (43) is threadedly connected to the left positioning sleeve (42).

3. A loose-fitting through-wall shaft according to claim 2, characterized in that: The telescopic sleeve (43) has a connecting cylinder (44) fixed to its side wall. The connecting cylinder (44) passes through the ball bearing (3) and shaft head (2) on the right side and is rotatably connected at the point of penetration.

4. A loose-fitting through-wall shaft according to claim 3, characterized in that: A square plate (45) is fixed to the right side wall of the connecting cylinder (44), the left side of the square plate (45) is attached to the right side wall of the right shaft head (2), and a handle (46) is fixed to the right side wall of the square plate (45).

5. A loose-fitting through-wall shaft according to claim 4, characterized in that: The through-wall bushing (5) includes a limiting strip (51), which is fixedly installed on the outer walls of the right positioning sleeve (41) and the left positioning sleeve (42). An outer steel bushing (52) slides on the side wall of the limiting strip (51).

6. A loose-fitting through-wall shaft according to claim 5, characterized in that: The outer steel bushing (52) has a telescopic groove (53) on its side wall, and the telescopic bushing (54) passes through the telescopic groove (53) and is slidably connected at the passage.

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