Universal spindle for edging mill

Abstract

The utility model discloses a universal spindle for an edging mill. Comprising a roller, and at least one end of the roller is provided with a roller flat head. The universal shaft is arranged corresponding to the roller flat head; a connecting shaft sleeve matched with the roller flat head is arranged on the side, close to the roller flat head, of the universal shaft. More than one elastic lock pin corresponding to the roller flat head is arranged on the connecting shaft sleeve; a concave part corresponding to the elastic lock pin is arranged on the roller flat head; and when the roller flat head is inserted into the connecting shaft sleeve, the free end of the elastic lock pin is clamped into the concave part of the roller flat head. According to the utility model, the automatic switching between the sliding of the universal spindle spline and the sliding of the roller flat head and the spindle sleeve can be realized.

Description

Technical Field

[0001] The utility model relates to the technical field of the transmission of tandem rolling mills, in particular to a universal joint shaft for an edger. Background Art

[0002] In large H-beam and rail beam and other large-section steel production lines, edgers are arranged in the middle of tandem universal rolling mills. There is more than one roll station for the edger. During operation, the position of the roll pass needs to be changed. At this time, the relative positions of the roll flat head and the universal joint shaft sleeve remain unchanged, and the spline of the universal joint shaft needs to expand and contract. When the roll needs to be replaced, the shaft sleeve of the universal joint shaft needs to be disengaged from the flat head of the roll, while the spline of the universal joint shaft remains stationary.

[0003] During the operation and roll change of the rolling mill, sliding displacements need to occur at two different parts, namely the sliding of the spline of the universal joint shaft and the sliding between the flat head of the roll and the universal joint shaft sleeve. When a sliding displacement occurs at one position, no sliding should occur at the other position. To achieve this effect, manual intervention is generally required, which increases the labor intensity of workers and reduces the efficiency. Content of the Utility Model

[0004] Aiming at the deficiencies of the prior art, the utility model provides a universal joint shaft for an edger, which realizes the automatic switching between the sliding of the spline of the universal joint shaft when changing the roll groove and the sliding between the flat head of the roll and the joint shaft sleeve when changing the roll. It can reduce the labor intensity of workers and increase the production efficiency.

[0005] To achieve the above purposes, the universal joint shaft for an edger of the utility model includes a roll, and at least one end of the roll is provided with a roll flat head; it also includes a universal shaft arranged corresponding to the roll flat head; on the side of the universal shaft close to the roll flat head, a joint shaft sleeve adapted to the roll flat head is provided;

[0006] One or more elastic locking pins are arranged on the joint shaft sleeve corresponding to the roll flat head;

[0007] A recess corresponding to the elastic locking pin is arranged on the roll flat head;

[0008] When the roll flat head is inserted into the joint shaft sleeve, the free end of the elastic locking pin is snapped into the recess of the roll flat head.

[0009] Furthermore, the elastic locking pin includes a cylindrical positioning sleeve; the middle part of the cylindrical positioning sleeve is a guiding cylinder; a gland is arranged at one opening side of the positioning sleeve, and the other opening is a bayonet with a diameter smaller than the inner diameter of the guiding cylinder; the diameter of the bayonet is smaller than the inner diameter of the guiding cylinder;

[0010] A locking pin is slidably arranged in the positioning sleeve. The locking pin is composed of a guiding column and a lock head arranged at the front end of the guiding column. The guiding column part of the locking pin is slidably arranged corresponding to the positioning sleeve.

[0011] A spring is arranged between the locking pin and the gland.

[0012] Under the action of the spring, the lock head of the locking pin extends out of the bayonet by a predetermined length.

[0013] Furthermore, a positioning post smaller than the inner diameter of the spring is arranged corresponding to the spring at the axis center of the gland.

[0014] Furthermore, a spring hole is arranged in the positioning post of the locking pin, and one end of the spring is arranged in the spring hole.

[0015] Furthermore, an indicating through hole is arranged on the gland, and an indicating rod is arranged corresponding to the indicating through hole on the positioning post of the locking pin. When the positioning post of the locking pin abuts against the bayonet, the free end of the indicating rod is located at the opening of the indicating through hole.

[0016] Furthermore, an anti-rotation groove is arranged axially on the side wall of the locking pin, and an anti-rotation post is arranged corresponding to the anti-rotation groove on the side wall of the cylindrical positioning sleeve.

[0017] Furthermore, an adjusting gasket is arranged between the gland and the spring.

[0018] Furthermore, an annular clamping groove is arranged on the outer circumference of the coupling sleeve in the circumferential direction.

[0019] Furthermore, a lug is arranged on the gland of the elastic locking pin.

[0020] The utility model can realize the automatic switching between the spline sliding of the universal coupling and the sliding of the roll flat head and the coupling sleeve. This universal coupling is used in an edging mill. The universal coupling of the edging mill has two working states: working and roll changing. When in the working state, when the rolling mill axially moves to change the rolling groove, the roll is locked with the universal coupling, and the axial movement of the roll will drive the universal coupling to generate relative movement to realize the groove changing of the roll. When in the roll changing state, the universal coupling descends with the roll, and the clamping groove on the outer edge of the universal coupling sleeve will be clamped with the coupling bracket. When the roll moves outwards, the flat head will be pulled out of the coupling sleeve to complete the roll changing function.

[0021] In this way, there is no need for too much manual intervention, the operation is simple and the performance is reliable, which reduces the labor intensity of workers, reduces the operation posts and improves the work efficiency. Brief Description of the Drawings

[0022] Figure 1 It is a schematic diagram of the universal coupling of the utility model in the working state;

[0023] Figure 2 This is a schematic diagram of the universal coupling shaft of the present utility model in the roll-changing state;

[0024] Figure 3 This is a sectional view of the top view of the elastic locking pin structure of the present utility model;

[0025] Figure 4 This is a sectional view of the front view of the elastic locking pin structure of the present utility model;

[0026] Figure 5 These are the front view and side view of the elastic locking pin of the present utility model;

[0027] Figure 6 This is a three-dimensional effect diagram of the coupling bracket.

[0028] In the figure: 1, roll flat head; 2, coupling sleeve; 3, elastic locking pin; 4, coupling bracket; 5, indicating rod; 6, gland; 7, spring; 8, positioning sleeve; 9, locking pin; 10, gasket group one; 11, gasket group two; 12, anti-rotation pin. Specific embodiments

[0029] The following describes the embodiments of the present utility model in detail with reference to the accompanying drawings.

[0030] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model.

[0031] The terms "first" and "second" are only used for descriptive purposes, and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present utility model, unless otherwise specified, the meaning of "plurality" is two or more.

[0032] In the description of the present utility model, it should be noted that unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected, or indirectly connected through an intermediate medium, and can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0033] Embodiment

[0034] Please refer to the attached Figure 1-4 , the present utility model provides a technical solution: a universal joint shaft that is convenient to operate and reliable in use includes a roll flat head 1, a shaft sleeve 2, an elastic locking pin 3, and a shaft bracket 4.

[0035] The elastic locking pin 3 is composed of an indicating rod 5, a gland 6, a spring 7, a positioning sleeve 8, a locking pin 9, a gasket group one 10, a gasket group two 11, an anti-rotation pin 12, etc. The roll flat head 1 is inserted into the shaft sleeve 2 with a flat hole, and torque can be transmitted to the roll through the flat hole groove and the flat head.

[0036] The shaft bracket 4 is a prior art. As Figure 6 shown, it is generally in a square shape with a mouth shape, fixed on the base, and cannot move in the axial direction of the roll. The space of the middle part with a mouth shape is larger than the diameter of the shaft sleeve, and the cooperation and detachment with the shaft sleeve 2 can be realized.

[0037] The elastic locking pin 3 is assembled on the shaft sleeve 2 through screws. The elastic locking pin 3 passes through the shaft sleeve 2 and can cooperate with the groove on the roll flat head 1.

[0038] The outer edge of the shaft sleeve 2 is provided with a concave groove, and the shaft bracket 4 is provided with a convex block. The convex block is directly below the concave groove and has a matching width.

[0039] The elastic locking pin 3 is an integral structure. Its positioning sleeve 8 is fixed in the round hole of the shaft sleeve 2 through screws, and the elastic locking pin 3 can be taken out as a whole by removing the screws.

[0040] A gasket group two 11 is provided between the positioning sleeve 8 and the shaft sleeve. By adjusting the thickness of the gasket group two 11, the depth of the elastic locking pin 3 extending into the shaft sleeve can be adjusted. The locking pin 9 is assembled in the inner hole of the positioning sleeve, and the front and rear sides of the end of the locking pin are processed into inclined surfaces.

[0041] An anti-rotation pin 12 is installed between the positioning sleeve 8 and the locking pin 9. The locking pin can move axially in the positioning sleeve but cannot rotate.

[0042] The gland 6 is connected to the positioning sleeve 8 through screws. A spring 7 is provided between the gland 6 and the locking pin 9. Under the action of the elastic force of the spring 7, the locking pin 9 will automatically extend out of the positioning sleeve 8. The form of the spring 7 can be a disc spring or a cylindrical spring. The core part of the gland 6 is a cylindrical structure and can be used as a guide rod for the spring 7.

[0043] A gasket group one 10 is provided between the spring 7 and the gland 6. By adjusting the thickness of the gasket group one, the elastic force of the spring 7 can be adjusted.

[0044] The indicating rod 5 is fastened inside the locking pin 9 through threads and nuts. The rod end passes through the hole on the gland 6 and extends outside the elastic locking pin 3. When the locking pin 9 axially moves inside the positioning sleeve, it drives the indicating rod to move axially. The state of the locking pin can be determined by the extended and retracted states of the indicating rod.

[0045] The universal coupling has two states: the working state and the roll-changing state. In the working state, during the normal operation of the rolling mill, when it is necessary to change the grooves on the roll according to the rolling requirements and axially move the roll, the universal coupling needs to provide torque and cannot be disengaged from the roll. It relies on the telescoping of the splines inside the universal coupling. In the roll-changing state, according to the process requirements, it is necessary to replace the old roll with a new one. At this time, the roll needs to be disengaged from the universal coupling.

[0046] As Figure 1 shown in the figure, when the universal coupling is in the working state, the universal coupling is disengaged from the coupling bracket, that is, the coupling sleeve 2 is disengaged from the coupling bracket 4. The locking pin 9 of the elastic locking pin 3 is in the extended state under the action of the spring 7 and forms a fit with the groove on the roll flat head 1 to prevent the roll flat head 1 from disengaging from the bracket sleeve 2. When the roll axially moves to change the groove, there is a locking pin structure between the roll and the universal coupling. The axial resistance will be greater than the planar friction force of the splines inside the universal coupling. The axial movement of the roll will drive the universal coupling to move, and the splines of the coupling will be pulled out to produce relative movement to achieve the groove change of the roll.

[0047] As Figure 2 shown in the figure, when it is necessary to change the roll and the universal coupling is in the roll-changing state, the universal coupling descends with the roll, or the coupling bracket 4 rises. The card slot on the outer edge of the universal coupling sleeve 2 will be stuck with the coupling bracket 4. When the roll moves outward, the universal coupling sleeve 2 will be stuck by the coupling bracket 4, restricting the axial movement of the coupling sleeve 2. There will be an axial movement tendency between the roll flat head 1 and the coupling sleeve 2. The interaction between the inclined groove inside the roll flat head 1 and the inclined surface of the locking pin will cause an axial force on the locking pin 9 of the elastic locking pin 3. As the pulling force of the roll moving outward gradually increases, the axial force of the locking pin 9 will also gradually increase. When the axial force of the locking pin 9 is greater than the elastic force of the spring 7, the spring 7 will be compressed and the locking pin 9 will retract. When the locking pin 9 is completely retracted, only the planar friction force remains between the rolling mill flat head 1 and the coupling sleeve 2, and the rolling mill flat head 1 will be pulled out from the coupling sleeve 2, and the roll will be pulled out. When the new roll flat head 1 of the replaced roll is inserted into the coupling sleeve, the end of the roll flat head 1 first contacts the inclined surface of the locking pin 9. When the thrust increases, under the action of the inclined surface, the spring 7 is compressed. After the locking pin 9 is completely retracted, the roll flat head 1 will be inserted in place in the coupling sleeve 2, and the groove on the rolling mill flat head 1 will be directly opposite to the locking pin 9. The locking pin 9 extends under the action of the spring 7 to combine the roll flat head 1 with the coupling sleeve 2. This completes a complete roll change.

[0048] The utility model realizes that the axial force for disengaging the flat head of the roll from the spindle bracket is slightly greater than the frictional force between the mating splines by adjusting the angle of the locking pin before and after and the elastic force of the spring, so that the flat head of the roll cannot be disengaged from the bracket sleeve during the working state, and the resistance between the flat head of the roll and the spindle sleeve is not too large during the roll changing state. The structure of the utility model can be adapted to spindles of various sizes by adjusting the inclined plane angle of the locking pin and the elastic force of the spring. Compared with the original manual intervention, the utility model can reduce the labor intensity of workers and improve the production efficiency. The structure of the utility model is relatively simple, without the need for a power actuator and control components, and has reliable performance.

[0049] The above has described the utility model in detail with reference to the accompanying drawings. However, the utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those of ordinary skill in the art, various changes can be made without departing from the gist of the utility model. Many other changes and modifications made without departing from the concept and scope of the utility model should be regarded as within the protection scope of the utility model.

[0050] In the description of this specification, the specific features, structures, materials or characteristics may be combined in a suitable manner in any one or more embodiments or examples.

[0051] The above is only the specific embodiment of the utility model, but the protection scope of the utility model is not limited thereto. Any person skilled in the art within the technical scope disclosed by the utility model can easily think of changes or substitutions, which should all be covered by the protection scope of the utility model. Therefore, the protection scope of the utility model should be subject to the protection scope of the claims.

Claims

1. A universal joint shaft for an edge rolling machine, characterized in that: It comprises a roller, at least one end of which is provided with a roller flat head; It also includes a universal shaft arranged corresponding to the flat head of the roll; a shaft connecting sleeve adapted to the flat head of the roll is arranged on the side of the universal shaft close to the flat head of the roll; One or more elastic locking pins are arranged on the shaft connecting sleeve corresponding to the flat head of the rolling roller; A recess corresponding to the elastic locking pin is arranged on the flat head of the rolling roller; When the flat head of the rolling roller is inserted into the shaft connecting sleeve, the free end of the elastic locking pin is clamped into the concave part of the flat head of the rolling roller.

2. The universal joint shaft for edge rolling machine as claimed in claim 1, characterized in that: The elastic locking pin comprises a cylindrical positioning sleeve; the middle part of the cylindrical positioning sleeve is a guide sleeve; a pressure cover is arranged at an opening on one side of the positioning sleeve, and the opening on the other side is a bayonet with a diameter smaller than the inner diameter of the guide sleeve; the diameter of the bayonet is smaller than the inner diameter of the guide sleeve; A lock pin is slidably arranged in the positioning sleeve, and the lock pin is composed of a guide column and a lock head arranged at the front end of the guide column; the guide column part of the lock pin is slidably arranged corresponding to the positioning sleeve; A spring is arranged between the lock pin and the pressure cover; Under the action of the spring, the lock head of the lock pin extends out of the bayonet to a predetermined length.

3. The universal joint shaft for edge rolling machine as claimed in claim 2, characterized in that: A positioning column smaller than the inner diameter of the spring is arranged at the axis center of the gland corresponding to the spring.

4. The universal joint shaft for edge rolling machine as claimed in claim 2, characterized in that: A spring hole is arranged in the positioning column of the lock pin, and one end of the spring is arranged in the spring hole.

5. The universal joint shaft for edge rolling machine as claimed in claim 4, characterized in that: An indicating through hole is arranged on the pressure cover, and an indicating rod is arranged on the positioning column of the lock pin corresponding to the indicating through hole; when the positioning column of the lock pin abuts against the bayonet, the free end of the indicating rod is located at the opening of the indicating through hole.

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