A quick-detachable spoke roller for a wheel rolling mill

Abstract

The present invention discloses a quick-release spoke roller for a wheel rolling mill, comprising a main shaft horizontally arranged on the left and right sides, the main shaft being in the shape of a cylinder with openings at both ends, a tie rod oil cylinder coaxially arranged at the opening at the right end of the main shaft, and a hollow rotating shaft coaxially fixedly connected at the opening at the left end of the main shaft; the output shaft and tie rod of the tie rod oil cylinder are coaxially arranged in the inner cavities of the main shaft and the rotating shaft respectively, and the output shaft and tie rod of the tie rod oil cylinder are slidingly connected to the inner cavities of the main shaft and the rotating shaft respectively; the left end of the output shaft of the tie rod oil cylinder is connected to the right end of a coaxial connecting mechanism slidably arranged in the inner cavity of the rotating shaft, and the left end of the coaxial connecting mechanism is connected to the right end of the tie rod by a quick-release mechanism arranged on the tie rod; the demand for tie rod replacement can be effectively met while simplifying the operating steps during tie rod replacement and improving work efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of rolling mills, in particular to a quick-detachable spoke roller for a wheel rolling mill. Background Art

[0002] A wheel mill is a device used to manufacture railway wheels. During wheel manufacturing, heated blanks are first pressed into shape using a press. The wheel mill then expands the spokes, rolls out the rim and tread, and finally grinds and polishes the wheels.

[0003] The main rollers and upper and lower centering rollers in the existing wheel rolling mill are used to fix the position of the wheel blank during the rolling process, ensuring that the axis of the inclined roller always points to the center of the wheel blank. The inclined rollers are used to process the inner and outer end faces of the rim and control the height of the rim; the main rollers are used to process the tread and rim, and the shape of the rim depends on the roller profile of the main rollers; the left and right spoke rollers are used to expand the rim and at the same time drive the wheel to rotate through friction.

[0004] The existing left and right spoke rollers are in the shape of a cone, and the top surface of the cone is fixed on the axis of the spoke roller; when working, the ends of the left and right spoke rollers at the same horizontal height are retracted inward and symmetrically arranged on both sides of the wheel, and the ends of the cones are buckled inward on the inner side of the wheel rim. The rotation of the cone drives the wheel to rotate, and at the same time the spoke roller can generate a retreat force in the axial direction, so that the cone expands the wheel rim outward.

[0005] As the rotating shaft connected to the spoke roller rotates at high speed and the spoke roller reciprocates axially driven by the tie rod, the radial force acting on the spoke roller constantly changes direction, which can easily cause fatigue in the tie rod connected to the spoke roller, resulting in failure modes such as deformation or fracture of the spoke roller. Therefore, the tie rod is a vulnerable part that needs to be replaced regularly to meet production quality and safety requirements. Furthermore, due to the long length and heavy weight of the spoke roller and tie rod, each repair or replacement of the tie rod wastes a lot of time and effort, which in turn increases the standby time of the wheel mill and affects the improvement of production capacity. Summary of the Invention

[0006] The object of the present invention is to provide a quick-detachable web roller for a wheel rolling mill, which can effectively meet the demand for tie rod replacement while simplifying the operating steps during tie rod replacement and improving work efficiency.

[0007] The present invention adopts the following technical solutions:

[0008] A quick-detachable spoke roller for a wheel rolling mill is characterized in that: the main shafts are arranged horizontally on the left and right sides, the main shafts are cylindrical with openings at both ends, a tie rod oil cylinder is coaxially arranged at the opening at the right end of the main shaft, and the opening at the left end of the main shaft is coaxially fixedly connected to the hollow rotating shaft; the output shaft and tie rod of the tie rod oil cylinder are coaxially arranged in the inner cavity of the main shaft and the rotating shaft respectively, and the output shaft and tie rod of the tie rod oil cylinder are slidably connected to the inner cavity of the main shaft and the rotating shaft respectively; the left end of the output shaft of the tie rod oil cylinder is connected by the right end of the coaxial connecting mechanism slidably arranged in the inner cavity of the rotating shaft, and the left end of the coaxial connecting mechanism is connected by the tie rod arranged on the tie rod The quick-release mechanism is connected to the right end of the pull rod, and the coaxial connection mechanism is used to realize the coaxial connection and relative rotation of the pull rod and the output shaft of the pull rod cylinder. The pull rod rotates synchronously with the rotating shaft through the coaxial connection mechanism, and the output shaft of the pull rod cylinder is rotatably connected to the main shaft through the coaxial connection mechanism; the output shaft of the pull rod cylinder moves left and right in the inner cavity of the main shaft and drives the pull rod to move left and right in the inner cavity of the rotating shaft through the coaxial connection mechanism; the quick-release mechanism is used to realize rapid disassembly and assembly of the pull rod and the coaxial connection mechanism, and the left end of the pull rod passes through the rotating shaft and is fixedly connected with a spoke roller; the rotating shaft and the spoke roller are slidably connected.

[0009] Furthermore, an elastic element is sleeved on the pull rod in the cavity of the rotating shaft, the left end of the elastic element contacts the inner wall of the cavity of the rotating shaft, and the right end of the elastic element contacts the quick release mechanism.

[0010] Furthermore, the elastic element is a plurality of disc springs sleeved on the pull rod; a rear retaining ring is sleeved on the pull rod between the quick release mechanism and the disc spring, and a front retaining ring is sleeved on the pull rod between the disc spring and the inner side wall of the cavity of the rotating shaft.

[0011] Furthermore, the coaxial connection mechanism includes a thrust bearing consisting of a left bearing disc and a right bearing disc; the right side of the right bearing disc is fixedly arranged with the output shaft of the pull rod cylinder, and the left side of the left bearing disc is in contact with the right end of the pull rod; the pull rod and the output shaft of the pull rod cylinder are rotationally connected through the thrust bearing; the left end of the output shaft of the pull rod cylinder is threadedly connected with a rear pull sleeve, the rear pull sleeve is fixedly arranged with the right side of the thrust bearing, and the left side of the thrust bearing is fixedly arranged with a front pull sleeve, and the front pull sleeve is sleeved on the right end of the pull rod.

[0012] Furthermore, the left bearing disk is fixedly embedded in the right side of the front sleeve, and the right bearing disk is fixedly embedded in the left side of the rear sleeve. The outer surface of the front sleeve is provided with a linear bearing for sliding along the axis. The linear bearing is fixedly embedded in an embedding groove opened on the inner side wall of the right end of the rotating shaft. The front sleeve can only move left and right in the linear bearing and cannot rotate. The front sleeve rotates synchronously with the rotating shaft; the outer surface of the rear sleeve is provided with a plurality of annular grooves along the axis, and a piston ring is provided in each annular groove. The piston ring generates tension so that the outer surface of the piston ring conflicts with the inner side wall of the rotating shaft.

[0013] Furthermore, the quick-release mechanism includes a clamping nut threadedly arranged at the right end of the pull rod, and also includes a pin fixedly arranged on the left side of the front pull sleeve, the pin being adapted to a slide groove provided on the outer surface of the clamping nut; the front pull sleeve is slidably arranged left and right with the clamping nut through the pin and the slide groove.

[0014] Furthermore, the quick-release mechanism includes a sleeve that is sleeved on the right end of the pull rod and slidably connected, and a plurality of through grooves are evenly opened on the outer surface of the sleeve along the circumference. The quick-release mechanism also includes a plurality of top blocks corresponding to the through grooves and arranged along the circumferential direction at the right end of the pull rod, and each top block is hinged to the pull rod; a through hole is coaxially opened in the pull rod, and a push rod is arranged in the through hole, and a tightening device is provided at the left end of the push rod, and a resistance disk is provided on the right part of the outer surface of the push rod. The tightening device forces the push rod to the right so that the right side of the resistance disk conflicts with the inner end of each top block, and the outer end of each top block is located in the corresponding through groove on the sleeve.

[0015] Furthermore, the tightening device is a locking bolt that fixes the spoke roller and the pull rod. An internal thread is provided on the inner wall on the left side of the through hole of the pull rod. The locking bolt passes through the center hole of the spoke roller from the left side and is threadedly connected to the internal thread of the through hole.

[0016] Furthermore, an inner sleeve is fixedly provided on the left side of the front pulling sleeve, and the right end of the push rod passes through the inner end of each push block into the inner cavity of the inner sleeve. The inner sleeve is coaxially inserted into the right end of the sleeve, and a plurality of latches are radially arranged inside the inner sleeve. The latches and the inner sleeve are slidingly arranged. A plurality of mounting holes corresponding to the latches are opened along the circumference of the inner side wall of the sleeve. The middle part of the latch is a cylinder, and the inner and outer ends are hemispherical and truncated cone respectively; a telescopic spring is fixedly provided in each mounting hole, and the inner ends of the telescopic springs are in contact with the outer ends of the corresponding latches.

[0017] Furthermore, when the right end of the push rod is not in contact with the latch, the natural height of the telescopic spring is consistent with the height of the mounting hole, and the telescopic spring drives the latch to be located in the inner sleeve, and the inner sleeve is slidably connected to the driving sleeve; when the right end of the push rod is in contact with the latch, the push rod drives the latch to compress the telescopic spring and enter the mounting hole, and the left part of the mounting hole opening is tightly pressed against the left part of the outer end of the latch.

[0018] The present invention is provided with a pull rod cylinder, a pull rod, a disc spring and a quick release mechanism. When in use, the output shaft of the pull rod cylinder contracts to the right, thereby driving the right bearing disc to move to the right in the cavity of the rotating shaft, and a gap appears between the right end of the pull rod and the left side of the thrust bearing. At this time, the elastic element pushes the pull rod to the right through the tightening nut, so that the right end of the pull rod conflicts with the thrust bearing. The movement of the pull rod to the right drives the spoke plate roller to slide to the right on the rotating shaft, thereby causing the spoke plate roller to generate an outward expansion force on the rim of the wheel, thereby achieving the purpose of expanding the wheel rim.

[0019] The present invention provides a sleeve, a push rod and a push block. When removing the pull rod, the tightening device is first disassembled, the push rod is pulled out, and then the pull rod is pulled out. When the pull rod is pulled out, each push block on the pull rod is forced to rotate, so that each push block is completely located inside the sleeve and does not interfere with the pulling out of the pull rod, thereby facilitating the disassembly of the pull rod. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 Schematic diagram of the installation position of the web roller in the present invention

[0021] Figure 2 Schematic diagram of the three-dimensional structure of the web roller in the present invention;

[0022] Figure 3 This is a schematic diagram of the front view structure of the rotating shaft in the present invention;

[0023] Figure 4 Schematic diagram of the internal structure of the rotating shaft, main shaft, housing and tie rod cylinder in the present invention;

[0024] Figure 5 Schematic diagram of the three-dimensional structure of the disc spring in the present invention;

[0025] Figure 6 For the present invention Figure 5 A schematic diagram of the structure enlargement at point A;

[0026] Figure 7 Schematic diagram of the internal three-dimensional structure of the rotating shaft and the main shaft in the present invention;

[0027] Figure 8 For the present invention Figure 7 A magnified schematic diagram of the structure at point B in FIG;

[0028] Figure 9 Schematic diagram of the internal structure of the pull rod in the present invention;

[0029] Figure 10 For the present invention Figure 9 A magnified schematic diagram of the structure at position C in FIG;

[0030] Figure 11 For the present invention Figure 10 A schematic diagram of the structure at E in FIG.

[0031] Figure 12 Schematic diagram of the three-dimensional structure of the sleeve in the present invention;

[0032] Figure 13 For the present invention Figure 12 A magnified schematic diagram of the structure at D in FIG.

[0033] Figure 14 Schematic diagram of the three-dimensional structure inside the casing in the present invention;

[0034] Figure 15 It is a schematic diagram of the three-dimensional structure of the top block in the present invention.

[0035] In the figure, 1. output shaft of tie rod cylinder; 2. rotating shaft; 3. spoke roller; 4. main shaft; 6. second bearing seat; 7. roller bearing; 14. motor; 16. conical head; 17. tie rod; 19. clamping nut; 20. tie rod cylinder; 21. disc spring; 22. rear retaining ring; 23. front retaining ring; 24. rear pull sleeve; 25. front pull sleeve; 26. pin shaft; 27. slide groove; 28. sleeve; 29. through groove; 30. ejector block; 31. ejector rod; 32. contact plate; 33. locking bolt; 34. inner sleeve; 35. latch; 36. telescopic spring; 37. housing; 38. ejector spring; 39. left bearing plate; 40. right bearing plate; 41. linear bearing; 42. piston ring. DETAILED DESCRIPTION

[0036] The present invention is described in detail below with reference to the accompanying drawings and embodiments:

[0037] Figures 1 to 15 As shown, the quick-detachable spoke plate roller for the wheel rolling mill described in the present invention includes a main shaft 4 arranged horizontally on the left and right sides, the main shaft 4 is in the shape of a cylinder with openings at both ends, a tie rod cylinder 20 is coaxially arranged at the opening at the right end of the main shaft 4, and a hollow rotating shaft 2 is coaxially fixedly connected at the opening at the left end of the main shaft 4; the output shaft 1 and the tie rod 17 of the tie rod cylinder are coaxially arranged in the inner cavities of the main shaft 4 and the rotating shaft 2 respectively, and the output shaft 1 and the tie rod 17 of the tie rod cylinder are slidably connected to the inner cavities of the main shaft 4 and the rotating shaft 2 respectively; the left end of the output shaft 1 of the tie rod cylinder is connected by a right end of a coaxial connecting mechanism slidably arranged in the inner cavity of the rotating shaft 2, and the left end of the coaxial connecting mechanism is connected by a connecting mechanism arranged on the tie rod 17 The quick-release mechanism is connected to the right end of the pull rod 17, and the coaxial connection mechanism is used to realize the coaxial connection and relative rotation of the pull rod 17 and the output shaft 1 of the pull rod cylinder. The pull rod 17 rotates synchronously with the rotating shaft 2 through the coaxial connection mechanism, and the output shaft 1 of the pull rod cylinder is rotationally connected to the main shaft 4 through the coaxial connection mechanism; the output shaft 1 of the pull rod cylinder moves left and right in the inner cavity of the main shaft 4 and drives the pull rod 17 to move left and right in the inner cavity of the rotating shaft 2 through the coaxial connection mechanism; the quick-release mechanism is used to realize the rapid disassembly and assembly of the pull rod 17 and the coaxial connection mechanism, and the left end of the pull rod 17 passes through the rotating shaft 2 and is fixedly connected to the spoke roller 3; the rotating shaft 2 is slidably connected to the spoke roller 3;

[0038] An elastic element is sleeved on the pull rod 17 located in the cavity of the rotating shaft 2, the left end of the elastic element contacts the inner wall of the cavity of the rotating shaft 2, and the right end of the elastic element contacts the quick release mechanism; when in use, the motor 14 drives the main shaft 4 to rotate, and the main shaft 4 drives the spoke roller 3 to rotate through the rotating shaft 2 and the pull rod 17, and the pull rod cylinder 20 and the output shaft 1 of the pull rod cylinder remain stationary in the main shaft 4.

[0039] In the present invention, the elastic element is a plurality of disc springs 21 sleeved on the pull rod 17. A rear retaining ring 22 is sleeved on the pull rod 17 between the quick release mechanism and the disc springs 21, and a front retaining ring 23 is sleeved on the pull rod 17 between the disc springs 21 and the inner wall of the cavity of the rotating shaft 2. The provision of the front retaining ring 23 and the rear retaining ring 22 increases the stability of the thrust transmission of the disc springs 21.

[0040] When it is necessary to move the spoke roller 3 axially to the right, the output shaft 1 of the tie rod cylinder contracts to the right, thereby driving the coaxial connection mechanism to move to the right in the cavity of the rotating shaft 2, so that a gap appears between the right end of the tie rod 17 and the left side of the quick release mechanism. At this time, the elastic element pushes the tie rod 17 to the right through the quick release mechanism, so that the right end of the tie rod 17 is always in close contact with the left end face of the coaxial connection mechanism. The rightward movement of the tie rod 17 drives the spoke roller 3 to slide axially to the right along the rotating shaft 2, thereby causing the spoke roller 3 to generate an outward expansion force on the rim of the wheel, thereby achieving the purpose of expanding the wheel rim.

[0041] In the present invention, the coaxial connection mechanism includes a thrust bearing composed of a left bearing plate 39 and a right bearing plate 40; the right side of the right bearing plate 40 is fixedly set with the output shaft 1 of the tie rod cylinder, and the left side of the left bearing plate 39 is in contact with the right end of the tie rod 17; the tie rod 17 and the output shaft 1 of the tie rod cylinder are rotationally connected through the thrust bearing.

[0042] In this embodiment, the left end of the output shaft of the tie rod cylinder 20 is threadedly connected with a rear pull sleeve 24, and the rear pull sleeve 24 is fixed to the right side of the thrust bearing, and the left side of the thrust bearing is fixed with a front pull sleeve 25, which is sleeved on the right end of the tie rod 17; when the tie rod cylinder 20 drives the thrust bearing 18 to move to the right through the rear pull sleeve 24, the front pull sleeve 25 moves to the right, so that a gap is generated between the right end of the tie rod 17 and the front pull sleeve 25. At this time, the disc spring 21 pushes the tie rod 17 to move to the right through the rear retaining ring 22 and the tightening nut 19, so that the right end of the tie rod 17 and the inner bottom wall of the front pull sleeve 25 are always in close contact. The tie rod 17 moves to the right and drives the spoke roller 3 to move to the right at the same time, thereby achieving the purpose of expanding the wheel rim of the wheel by the conical head 16 of the spoke roller 3.

[0043] Since the thrust bearing has a strong ability to withstand axial forces but a weak ability to withstand radial forces, in order to avoid the pull rod 17 and the output shaft 1 of the pull rod cylinder from being misaligned due to gravity, causing damage to the thrust bearing. The left bearing disc 39 is fixedly embedded in the right side of the front sleeve 25, and the right bearing disc 40 is fixedly embedded in the left side of the rear sleeve 24. The outer surface of the front sleeve 25 is provided with a linear bearing 41 sliding along the axis. The linear bearing 41 is fixedly embedded in the inlay groove provided on the inner side wall of the right end of the rotating shaft 2. The front sleeve 25 can only move left and right in the linear bearing 41 and cannot rotate. The front sleeve 25 rotates synchronously with the rotating shaft 2; the outer surface of the rear sleeve 24 is provided with a plurality of annular grooves along the axis, and a piston ring 42 is provided in each annular groove. The piston ring 42 generates tension so that the outer surface of the piston ring 42 conflicts with the inner side wall of the rotating shaft 2. The radial support of the rear sleeve 24 is achieved by the tension of the piston ring 42, so that the rear sleeve 24 and the right bearing disc 40 form radial support; the front sleeve 25 is formed with radial support by the linear bearing 41, so that the front sleeve 25 forms radial support to the left bearing disc 39; to improve the service life of the thrust bearing.

[0044] In the present invention, the left end of the output shaft 1 of the tie rod cylinder is connected to the rear pull sleeve 24 through a thread. When the rolling mill is hot rolling the wheel, the web roller 3 is subjected to a relatively harsh force, which causes the tie rod 17 to be subjected to the combined action of torque, bending moment, shear stress and axial force, and the tie rod 17 is easily broken. In actual production, the tie rod 17 needs to be frequently disassembled for repair or replacement. In order to facilitate the disassembly of the tie rod 17, in the present invention, a quick-release mechanism is used to realize the rapid disassembly and assembly of the tie rod 17 and the coaxial connection mechanism, so that the tie rod 17 can be quickly removed for repair and replacement when the rotating shaft 2 remains stationary.

[0045] Example 1:

[0046] In this embodiment, the quick release mechanism includes a compression nut 19 threadedly arranged at the right end of the pull rod 17, and also includes a pin 26 fixedly arranged on the left side of the front pull sleeve 25, the pin 26 is adapted to the slide groove 27 provided on the outer surface of the compression nut 19; the front pull sleeve 25 is slidably arranged with the compression nut 19 left and right through the pin 26 and the slide groove 27;

[0047] When the tie rod cylinder 20 drives the rear pull sleeve 24, the thrust bearing and the front pull sleeve 25 to move to the right through the output shaft 1 of the tie rod cylinder, the front pull sleeve 25 drives the pin 26 to slide to the right in the slide groove 27 of the clamping nut 19 but does not separate from the slide groove 27 of the clamping nut 19. At this time, due to the gap between the right end of the tie rod 17 and the front pull sleeve 25, the disc spring 21 drives the tie rod 17 to move to the right through the clamping nut 19, keeping the right end of the tie rod 17 always in close contact with the inner bottom wall of the front pull sleeve 25. At the same time, the tie rod 17 drives the spoke roller 3 to move to the right to expand the wheel rim. When the pull rod 17 needs to be removed, the motor 14 stops, and the spoke roller 3 is first removed from the left end of the pull rod 17. Then, the left end of the rotating shaft 2 is clamped by a tool to keep the rotating shaft 2 stationary, and then the left end of the pull rod 17 is rotated. At this time, the clamping nut 19 is kept stationary by the pin 26 and the front sleeve 25, and the front sleeve 25 is slidably connected to the rotating shaft 2 in the left and right directions. The front sleeve 25 and the rotating shaft 2 also remain stationary. Continuously rotate the pull rod 17 to remove the pull rod 17 from the clamping nut 19, thereby achieving the purpose of disassembling the pull rod 17 and facilitating the maintenance and replacement of the pull rod 17.

[0048] Example 2:

[0049] When the cam 31 is in the unlock state, the cam 31 is in the unlock state, and the cam 31 is in the unlock state, so that the cam 31 is locked. When the pull rod 17 is removed, the first push device is removed, the push rod 31 is pulled out, and then the pull rod 17 is pulled out. When the pull rod 17 is removed, each push block 30 on the pull rod 17 is forced to rotate so that each push block 30 is completely located inside the sleeve 28, without interfering with the extraction of the pull rod 17, and facilitating the removal of the pull rod 17.

[0050] In this embodiment, the tightening device is a locking bolt 33 that fixes the spoke roller 3 and the pull rod 17. An internal thread is provided on the inner wall on the left side of the through hole of the pull rod 17. The locking bolt 33 passes through the center hole of the spoke roller 3 from the left side and is threadedly connected to the internal thread of the through hole. When the locking bolt 33 is screwed, the push rod 31 is pressed at the same time, causing the push rod 31 to move to the right, and then the push rod 31 drives the sleeve 28 to move to the left through the contact plate 32 and the push block 30, so that the sleeve 28 compresses the disc spring 21.

[0051] In order to further ensure the stability of the axial position of the sleeve 28 and the pull rod 17, in this embodiment, an inner sleeve 34 is fixedly provided on the left side of the front pull sleeve 25, and the right end of the push rod 31 passes through the inner end of each push block 30 into the inner cavity of the inner sleeve 34. The inner sleeve 34 is coaxially inserted into the right end of the sleeve 28. A plurality of pins 35 are radially arranged inside the inner sleeve 34. The pins 35 and the inner sleeve 34 are slidingly arranged. A plurality of mounting holes corresponding to the pins 35 are opened along the circumference of the inner wall of the sleeve 28. The middle part of the pin 35 is a cylinder, and the inner end and the outer end are respectively They are respectively hemispherical and conical; a telescopic spring 36 is fixedly arranged in each mounting hole, and the inner end of the telescopic spring 36 abuts against the outer end of the corresponding pin 35; when the push rod 31 moves to the right, it drives the sleeve 28 to move to the left through the abutment plate 32 and the top block 30 to compress the disc spring 21, and the right end of the push rod 31 enters between the inner ends of each pin 35 and drives each pin 35 to move outward, so that the outer end of each pin 35 is inserted into the corresponding mounting hole, thereby limiting the sleeve 28 from moving axially to the right relative to the inner sleeve 34.

[0052] In this embodiment, when the right end of the push rod 31 is not in contact with the latch 35, the natural height of the telescopic spring 36 is consistent with the height of the mounting hole, and the telescopic spring 36 drives the latch 35 to be located in the inner sleeve 34, and the inner sleeve 34 is slidingly connected to the drive sleeve 28; when the right end of the push rod 31 is in contact with the latch 35, the push rod 31 drives the latch 35 to compress the telescopic spring 36 and enter the mounting hole, and the left part of the mounting hole opening is tightly pressed against the left part of the outer end of the latch 35, so that the drive sleeve 28 cannot move axially to the right relative to the inner sleeve 34.

[0053] Since the pull rod 17 may break accidentally during use, the left part of the pull rod 17 can be taken out from the left end opening of the cavity of the rotating shaft 2 after the breakage, but the right part of the pull rod 17 is located in the cavity of the rotating shaft 2 and is not easy to take out. In order to achieve the purpose of automatically ejecting the broken pull rod 17 when the pull rod 17 breaks accidentally, in this embodiment, the contact plate 32 is slidably set on the ejector rod 31 in the left and right directions, and the ejector rod 31 on the left side of the contact plate 32 is sleeved with an ejection spring 38. The left end of the ejection spring 38 is fixed to the ejector rod 31 through a boss set on the ejector rod 31. The outer diameter of the boss is adapted to the inner diameter of the through hole of the pull rod 17. The right end of the ejection spring 38 is fixed to the contact plate 32. When the pull rod 17 is broken, the ejection spring 38 is fixed to the contact plate 32. During disassembly, first remove the locking bolt 33. At this time, the ejection spring 38 will push the sleeve 28 to the left through the contact plate 32 and the ejector block 30, thereby causing the pull rod 17 to move to the left, so that the left end of the pull rod 17 extends further out of the left side of the rotating shaft 2, facilitating the withdrawal of the pull rod 17. When the pull rod 17 is withdrawn, the ejector block 30 is forced to rotate to push the pull rod 17 outward through the contact plate 32, compressing the ejection spring 38. The ejector block 30 is forced to rotate to the inside of the sleeve 28 and does not interfere with the withdrawal of the pull rod 17.

[0054] During use of the present invention, the motor drives the spoke roller 3 to rotate through the main shaft 4 and the rotating shaft 2. The spoke roller 3 drives the wheel to rotate through the friction between the spoke roller 3 and the wheel, thereby achieving the purpose of the spoke roller 3 driving the wheel to rotate. When it is necessary to realize that the spoke roller 3 can move backward relative to the wheel along its own length direction: In Example 1, the coaxial connection mechanism is driven to move to the right by the contraction of the output shaft 1 of the tie rod cylinder. At this time, due to the gap between the right end of the tie rod 17 and the front pull sleeve 25, the disc spring 21 drives the tie rod 17 to move to the right through the tightening nut 19, keeping the right end of the tie rod 17 in contact with the inner bottom wall of the front pull sleeve 25. At the same time, the tie rod 17 drives the spoke roller 3 to move to the right to expand the wheel rim; in Example 2, when the tie rod cylinder 20 drives the coaxial connection mechanism to move to the right, the sleeve 28 separates from the front pull sleeve 25 to generate a gap, and the disc spring 21 drives the tie rod 17 to move to the right through the sleeve 28 and the top block 30, thereby causing the sleeve 28 to contact the left side of the front pull sleeve 25, thereby realizing that the tie rod 17 drives the spoke roller 3 to move to the right to expand the wheel rim.

Claims

1. A quick-detachable web roller for a wheel rolling mill, characterized in that: The left and right horizontally arranged main shafts are cylindrical with openings at both ends. A pull rod oil cylinder is coaxially arranged at the opening at the right end of the main shaft, and a hollow rotating shaft is coaxially fixedly connected to the opening at the left end of the main shaft; the output shaft and pull rod of the pull rod oil cylinder are coaxially arranged in the inner cavities of the main shaft and the rotating shaft respectively, and the output shaft and pull rod of the pull rod oil cylinder are slidably connected to the inner cavities of the main shaft and the rotating shaft respectively; the left end of the output shaft of the pull rod oil cylinder is connected to the right end of a coaxial connecting mechanism slidably arranged in the inner cavity of the rotating shaft, and the left end of the coaxial connecting mechanism is connected to the main shaft through a quick-release mechanism arranged on the pull rod. The right end of the pull rod is connected, and the coaxial connection mechanism is used to realize the coaxial connection and relative rotation of the pull rod and the output shaft of the pull rod cylinder. The pull rod rotates synchronously with the rotating shaft through the coaxial connection mechanism, and the output shaft of the pull rod cylinder is rotatably connected to the main shaft through the coaxial connection mechanism; the output shaft of the pull rod cylinder moves left and right in the inner cavity of the main shaft and drives the pull rod to move left and right in the inner cavity of the rotating shaft through the coaxial connection mechanism; the quick release mechanism is used to realize the rapid disassembly and assembly of the pull rod and the coaxial connection mechanism, and the left end of the pull rod passes through the rotating shaft and is fixedly connected to the spoke roller; the rotating shaft and The spoke roller is slidably connected; the coaxial connection mechanism includes a thrust bearing composed of a left bearing disc and a right bearing disc; the right side of the right bearing disc is fixedly arranged with the output shaft of the tie rod cylinder, and the left side of the left bearing disc abuts against the right end of the tie rod; the tie rod and the output shaft of the tie rod cylinder are rotatably connected through the thrust bearing; the left end of the output shaft of the tie rod cylinder is threadedly connected with a rear pull sleeve, the rear pull sleeve is fixedly arranged with the right side of the thrust bearing, and the left side of the thrust bearing is fixedly provided with a front pull sleeve, which is sleeved on the right end of the tie rod; the quick-release mechanism includes a sleeve on the tie rod A sleeve is provided at the right end and is slidably connected. A plurality of through grooves are evenly provided on the outer surface of the sleeve along the circumference. The quick-release mechanism also includes a plurality of top blocks corresponding to the through grooves arranged along the circumferential direction at the right end of the pull rod, and each top block is hinged to the pull rod. A through hole is coaxially provided in the pull rod, a push rod is provided in the through hole, a tightening device is provided at the left end of the push rod, and a contact disk is provided on the right part of the outer surface of the push rod. The tightening device forces the push rod to the right so that the right side of the contact disk contacts the inner end of each top block, and the outer end of each top block is located in the corresponding through groove on the sleeve.

2. The quick-detachable web roller for a wheel rolling mill according to claim 1, characterized in that: An elastic element is sleeved on the pull rod in the cavity of the rotating shaft, the left end of the elastic element contacts the inner side wall of the cavity of the rotating shaft, and the right end of the elastic element contacts the quick release mechanism.

3. The quick-detachable web roller for a wheel rolling mill according to claim 2, characterized in that: The elastic element is a plurality of disc springs sleeved on the pull rod; a rear retaining ring is sleeved on the pull rod between the quick release mechanism and the disc spring, and a front retaining ring is sleeved on the pull rod between the disc spring and the inner wall of the cavity of the rotating shaft.

4. The quick-detachable web roller for a wheel rolling mill according to claim 1, characterized in that: The left bearing disk is fixedly embedded in the right side of the front pulling sleeve, and the right bearing disk is fixedly embedded in the left side of the rear pulling sleeve. The outer surface of the front pulling sleeve is provided with a linear bearing for sliding along the axis. The linear bearing is fixedly embedded in an embedding groove provided on the inner side wall of the right end of the rotating shaft. The front pulling sleeve can only move left and right in the linear bearing and cannot rotate. The front pulling sleeve rotates synchronously with the rotating shaft; the outer surface of the rear pulling sleeve is provided with a plurality of annular grooves along the axis, and a piston ring is provided in each annular groove. The piston ring generates tension so that the outer surface of the piston ring conflicts with the inner side wall of the rotating shaft.

5. The quick-detachable web roller for a wheel rolling mill according to claim 1, characterized in that: The quick-release mechanism includes a clamping nut threadedly arranged at the right end of the pull rod, and also includes a pin fixedly arranged on the left side of the front pull sleeve, which is adapted to a slide groove opened on the outer surface of the clamping nut; the front pull sleeve is slidably arranged left and right with the clamping nut through the pin and the slide groove.

6. The quick-detachable web roller for a wheel rolling mill according to claim 1, characterized in that: The tightening device is a locking bolt that fixes the spoke roller and the pull rod. An internal thread is provided on the inner wall on the left side of the through hole of the pull rod. The locking bolt passes through the center hole of the spoke roller from the left side and is threadedly connected to the internal thread of the through hole.

7. The quick-detachable web roller for a wheel rolling mill according to claim 6, characterized in that: An inner sleeve is fixedly provided on the left side of the front pulling sleeve, and the right end of the push rod passes through the inner end of each push block into the inner cavity of the inner sleeve. The inner sleeve is coaxially inserted into the right end of the sleeve. A plurality of latches are radially arranged inside the inner sleeve, and the latches and the inner sleeve are slidingly arranged. A plurality of mounting holes corresponding to the latches are opened along the circumference of the inner side wall of the sleeve. The middle part of the latch is a cylinder, and the inner and outer ends are hemispherical and truncated cone respectively; a telescopic spring is fixedly provided in each mounting hole, and the inner ends of the telescopic springs are in contact with the outer ends of the corresponding latches.

8. The quick-detachable web roller for a wheel rolling mill according to claim 7, characterized in that: When the right end of the push rod is not in contact with the latch, the natural height of the telescopic spring is consistent with the height of the mounting hole, and the telescopic spring drives the latch to be located in the inner sleeve, and the inner sleeve is slidably connected to the driving sleeve; when the right end of the push rod is in contact with the latch, the push rod drives the latch to compress the telescopic spring and enter the mounting hole, and the left part of the mounting hole opening is tightly pressed against the left part of the outer end of the latch.

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