Transmission clutch shifting device

Abstract

The present invention relates to a gearbox clutch shifting device, belonging to the hot rolling technical field. It includes a transmission shaft and a transmission gear arranged on the transmission shaft; a first shaft sleeve and a second shaft sleeve are installed on the transmission shaft, a first bearing sleeve and a second bearing sleeve are installed on the transmission gear, and the first bearing sleeve is matched with the first shaft sleeve; the second bearing sleeve is matched with the second shaft sleeve. The present invention realizes the radial support and axial positioning of the clutch transmission mechanism through shaft sleeves, effectively improves the impact resistance of the clutch, makes the shifting process smoother, effectively reduces the wear of the clutch assembly, and improves the service life and operation stability of the clutch shifting device.

Description

Technical Field

[0001] The present invention belongs to the technical field of hot rolling and relates to a gearbox clutch shifting device. Background Art

[0002] During the production process of high-speed wire rods and high-speed bar rods, due to the large span of product specification ranges, and for products of different specifications to achieve the designed hourly output, there are extremely large differences in their rolling speeds, ranging from several meters per second to over a hundred meters per second. Facing such a large speed range, it is difficult to meet the different requirements of rolling speeds only through the adjustment of the motor speed range in conventional designs. Therefore, a gear speed change device needs to be set up to meet the requirements of the speed range. In addition, due to the production characteristics of small batches and multiple specifications of high-speed wires, it is necessary to frequently change product specifications during the production process, that is, the finishing mill group needs to have different speed ratio combinations to adapt to the requirements of rolling speeds and rolling torques of products of different specifications, thereby improving the adaptability of the rolling mill and meeting the production of products with multiple specifications.

[0003] For this reason, it is usually necessary to set up a gearbox between the rolling mill and the motor of the finishing mill group of high-speed wire rods and high-speed bar rods to achieve different speed ratio combinations to meet the rolling requirements of products of different specifications. For the most critical clutch device of the existing gearbox, based on the special working condition that the inner and outer rings of the bearing are relatively stationary during load bearing, the hammering effect of the rolling elements on the inner and outer rings will cause problems such as rapid bearing damage, unsmooth shifting, easy gear disengagement, and wear of the clutch transmission mechanism, seriously affecting the stability of the gearbox and the service life of components. Summary of the Invention

[0004] In view of this, the purpose of the present invention is to provide a gearbox clutch shifting device, which realizes the radial support and axial positioning of the clutch transmission mechanism through a shaft sleeve, thereby improving the anti-impact performance of the clutch, improving the shifting flexibility of the clutch, and enhancing the operating stability and service life of the shifting device.

[0005] To achieve the above purpose, the present invention provides the following technical solutions:

[0006] A gearbox clutch shifting device includes a transmission shaft and a transmission gear arranged on the transmission shaft; a first shaft sleeve and a second shaft sleeve are installed on the transmission shaft, a first bearing sleeve and a second bearing sleeve are installed on the transmission gear, and the first bearing sleeve is matched with the first shaft sleeve; the second bearing sleeve is matched with the second shaft sleeve.

[0007] Optionally, both the first shaft sleeve and the second shaft sleeve are provided with bosses, and the bosses are used to limit the first bearing sleeve or the second bearing sleeve from the outside.

[0008] Optionally, a spacer sleeve is provided between the first bearing sleeve and the second bearing sleeve. An annular oil groove is formed in the spacer sleeve, and a plurality of radial oil holes are formed along the annular oil groove.

[0009] Optionally, a plurality of groups of first oil grooves are axially provided on the inner hole surfaces of the first bearing sleeve and the second bearing sleeve. A plurality of groups of second oil grooves are radially provided at the positions where the first bearing sleeve and the second bearing sleeve are in cooperation with the boss. The first oil grooves and the second oil grooves communicate axially and radially.

[0010] Optionally, an axial oil passage is provided on the transmission shaft, and a radial oil passage is formed at a position corresponding to the spacer sleeve. The axial oil passage communicates with the radial oil passage, and lubricating oil enters the annular oil groove provided on the spacer sleeve through the axial oil passage and the radial oil passage.

[0011] Optionally, the first shaft sleeve and the second shaft sleeve are fixed on the transmission shaft by a nut and a shaft shoulder provided on the transmission shaft.

[0012] Optionally, external splines are provided on both the transmission gear and the transmission shaft.

[0013] Optionally, the spline sleeve is movably mounted on the transmission shaft through an internal spline, and meshes with the external spline on the transmission shaft and the external spline on the transmission gear respectively to realize the transmission of different transmission gears.

[0014] Optionally, it further includes a gear shaft provided with gears. The number of the gears and the transmission gears matches and there are at least two. Different gear transmission paths are realized through the meshing of the gears and the transmission gears and the switching of the spline sleeve.

[0015] Optionally, the first shaft sleeve and the second shaft sleeve are directly contact-mounted, and an annular oil groove and radial oil holes are provided on the inner side cross section of the first shaft sleeve and the second shaft sleeve to realize the penetration of lubricating oil.

[0016] The beneficial effects of the present invention are as follows:

[0017] 1) The present invention uses bearing sleeves and shaft sleeves to achieve radial support and axial positioning. When the transmission gear and the transmission shaft rotate synchronously, the bearing sleeves and the shaft sleeves have a large bearing area, and the bearing surfaces do not contact under lubrication conditions, so there is no friction and impact loss. Therefore, the clutch transmission is stable and has a longer service life;

[0018] 2) A smaller fit clearance can be adopted between the bearing sleeve and the shaft sleeve, and the spline sleeve will not tilt during the axial movement, resulting in small shifting resistance and a smoother shifting process.

[0019] Other advantages, objectives, and features of the present invention will be described to some extent in the subsequent specification, and to some extent, will be obvious to those skilled in the art based on the study of the following text, or can be learned from the practice of the present invention. The objectives and other advantages of the present invention can be achieved and obtained through the following specification. Brief Description of the Drawings

[0020] To make the objectives, technical solutions, and advantages of the present invention clearer, the present invention will be described in detail preferably with reference to the accompanying drawings, where:

[0021] Figure 1 : Transmission clutch shifting device;

[0022] Figure 2 : Schematic diagram of the shifting position of the transmission clutch;

[0023] Figure 3 : Partial view of the transmission clutch;

[0024] Figure 4 : First view of the bearing sleeve of the transmission clutch;

[0025] Figure 5 : Second view of the bearing sleeve of the transmission clutch. Detailed Description of the Embodiment

[0026] The following illustrates the embodiments of the present invention through specific examples. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments. Various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the drawings provided in the following embodiments only illustrate the basic concept of the present invention schematically. Without conflict, the following embodiments and the features in the embodiments can be combined with each other.

[0027] Among them, the drawings are only for illustrative purposes, showing only schematic diagrams, not physical diagrams, and should not be construed as a limitation to the present invention; for better illustrating the embodiments of the present invention, some components in the drawings will be omitted, enlarged, or reduced, which do not represent the dimensions of the actual product; for those skilled in the art, it is understandable that some well-known structures and their descriptions in the drawings may be omitted.

[0028] In the accompanying drawings of the embodiments of the present invention, the same or similar reference numerals correspond to the same or similar components; in the description of the present invention, it should be understood that if there are terms such as "upper", "lower", "left", "right", "front", "rear", etc. indicating the orientation or positional relationship, they are based on the orientation or positional relationship shown in the accompanying drawings. This is only for the convenience of describing the present invention 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. Therefore, the terms describing the positional relationship in the accompanying drawings are only for illustrative purposes and should not be construed as a limitation of the present invention. For those of ordinary skill in the art, the specific meanings of the above terms can be understood according to specific circumstances.

[0029] Please refer to Figures 1 to 5 , a transmission clutch shifting device of the present invention includes at least one set of a first bushing 3 and a second bushing 7 installed on a drive shaft 1, and a first bearing sleeve 4 and a second bearing sleeve 6 installed in the inner hole of a transmission gear. The first bushing 3 and the second bushing 7 are respectively rotationally matched with the first bearing sleeve 4 and the second bearing sleeve 6 to achieve radial support and relative rotation of the transmission gear.

[0030] In the present invention, for the described transmission clutch shifting device, both ends of the first bushing 3 and the second bushing 7 are provided with bosses 3c and 7c, which are respectively rotationally matched with the outer side surfaces 4c and 6c of the first bearing sleeve 4 and the second bearing sleeve 6 to achieve axial positioning of the transmission gear.

[0031] In the present invention, for the described transmission clutch shifting device, a spacer sleeve 5 is arranged at the middle position of the first bearing sleeve 4 and the second bearing sleeve 6. An annular oil groove 5c is arranged in the inner hole of the spacer sleeve 5, and a plurality of groups of radial oil holes 5d are arranged along the circumferential direction of the annular oil groove 5c to achieve internal and external penetration of lubricating oil.

[0032] In the present invention, for the first bearing sleeve 4 and the second bearing sleeve 6, a plurality of groups of oil grooves 46b are arranged along the axial direction on the inner hole surface of the bearing sleeve, and a plurality of groups of oil grooves 46a are arranged along the radial direction at the positions where the bosses 3c and 7c at both ends of the first bushing 3 and the second bushing 7 are matched. Among them, the oil grooves 46b and the oil grooves 46a are axially and radially penetrated.

[0033] In the present invention, an axial oil passage 1a is arranged in the middle of the drive shaft 1. At least two oil passages 1c and 1b are respectively arranged along the radial direction at the positions of the corresponding spacer sleeves 5a and 5b. Lubricating oil can enter the mating surface of the bearing sleeve and the bushing through the axial oil passage and the radial oil passage through the oil grooves of the spacer sleeves 5a and 5b.

[0034] In the present invention, for a transmission clutch shifting device, a transmission gear 8 and a transmission gear 10 are rotatably mounted on a transmission shaft 1 through a first bearing sleeve 4 and a second bearing sleeve 6, and radial support and axial positioning are achieved through a first shaft sleeve 3 and a second shaft sleeve 7. The first shaft sleeve 3 and the second shaft sleeve 7 assembly are fixed on the transmission shaft 1 through a nut 2 and shaft shoulders 1d, 1e.

[0035] In the present invention, the transmission gear 8 and the transmission gear 10 are respectively provided with external splines 8a and external splines 10a, and an external spline 1f is provided on the transmission shaft 1.

[0036] In the present invention, for a transmission clutch shifting device, a spline sleeve 9 is movably mounted on the transmission shaft 1 through an internal spline 9a, and is respectively meshed with the external spline 1f of the transmission shaft 1, the external spline 8a of the transmission gear 8, and the external spline 10a of the transmission gear 10 to achieve different gear transmissions.

[0037] In the present invention, for a transmission clutch shifting device, it includes a gear transmission shaft 11 provided with 2 gears. The gears 11a and 11b on the gear transmission shaft 11 are respectively meshed with the transmission gear 8 and the transmission gear 10 on the transmission shaft 1, and different gear transmission paths are achieved through the spline sleeve 9.

[0038] In the present invention, for the first shaft sleeve 3 and the second shaft sleeve 7, a spacer sleeve 5 can be cancelled in the middle. The first shaft sleeve 3 and the second shaft sleeve 7 are directly contact-mounted in the middle, and annular oil grooves 3e, 7e and radial oil holes 3d, 7d are respectively provided on the inner cross-sections of the first shaft sleeve 3 and the second shaft sleeve 7 to achieve the penetration of lubricating oil.

[0039] The present invention will be further described below in conjunction with the accompanying drawings, but the present invention is not limited thereto.

[0040] Embodiment: A transmission clutch shifting device includes at least one set of a first shaft sleeve 3 and a second shaft sleeve 7 mounted on a transmission shaft 1 and a first bearing sleeve 4 and a second bearing sleeve 6 mounted in the inner holes of transmission gears. There is a certain installation gap between the mating surfaces of the first shaft sleeve 3 and the second shaft sleeve 7 with the first bearing sleeve 4 and the second bearing sleeve 6 respectively, so as to realize the relative rotation of the transmission gear relative to the transmission shaft 1.

[0041] Furthermore, convex platforms 3c and 7c are provided at both ends of the first shaft sleeve 3 and the second shaft sleeve 7, which respectively form mating surfaces with the outer side surfaces 4c and 6c of the first bearing sleeve 4 and the second bearing sleeve 6. There is a certain installation gap between the mating surfaces, so as to realize the axial positioning of the transmission gear and its rotation relative to the transmission shaft 1.

[0042] Furthermore, a spacer sleeve 5 is provided at the middle position between the first bearing sleeve 4 and the second bearing sleeve 6. An annular oil groove 5c is provided in the inner hole of the spacer sleeve 5, and a plurality of groups of radial oil holes 5d are provided along the circumferential direction of the oil groove 5c. Lubricating oil can enter the radial mating surface and the axial mating surface formed by the first bearing sleeve 4 and the second bearing sleeve 6 and the first shaft sleeve 3 and the second shaft sleeve 7 through the oil groove 5c and the oil holes 5d, so as to realize the lubrication of the mating surface.

[0043] Furthermore, for the first bearing sleeve 4 and the second bearing sleeve 6, a plurality of groups of oil grooves 46b are provided along the axial direction on the inner hole surface of the bearing sleeve, and a plurality of groups of oil grooves 46a are provided along the radial direction at the mating positions with the end bosses 3c and 7c of the first shaft sleeve 3 and the second shaft sleeve 7. Among them, the oil grooves 46b and the oil grooves 46a communicate axially and radially. When the transmission gear rotates relative to the transmission shaft 1, the lubricating oil can enter the mating surface through the oil grooves, so as to realize the lubrication of the mating surface.

[0044] Furthermore, an axial oil passage 1a is provided in the middle of the transmission shaft 1, and at least 2 oil passages 1c and 1b are respectively provided along the radial direction at the positions of the corresponding spacer sleeves 5a and 5b. Lubricating oil can enter the mating surface of the bearing sleeve and the shaft sleeve through the axial oil passage and the radial oil passage through the oil grooves of the spacer sleeves 5a and 5b.

[0045] Furthermore, for a gearbox clutch shifting device, the transmission gear 8 and the transmission gear 10 are rotatably mounted on the transmission shaft 1 through the first bearing sleeve 4 and the second bearing sleeve 6, and radial support and axial positioning are realized through the first shaft sleeve 3 and the second shaft sleeve 7. The first shaft sleeve 3 and the second shaft sleeve 7 assembly are fixed on the transmission shaft 1 through the nut 2 and the shaft shoulders 1d and 1e.

[0046] Furthermore, external splines 8a and 10a are respectively provided on the transmission gear 8 and the transmission gear 10, and an external spline 1f is provided on the transmission shaft 1.

[0047] Furthermore, for a gearbox clutch shifting device, the spline sleeve 9 is movably mounted on the transmission shaft 1 through an internal spline 9a, and is respectively meshed with the external spline 1f of the transmission shaft 1, the external spline 8a of the transmission gear 8, and the external spline 10a of the transmission gear 10, so as to realize different gear transmissions. That is, when the internal spline of the spline sleeve 9 is simultaneously meshed with the external spline of the transmission gear 8 and the external spline 1f of the transmission shaft 1, the transmission gear 8 and the transmission shaft 1 rotate synchronously. The load and impact of the transmission gear 8 are transmitted to the first shaft sleeve 3a and 7a through the first bearing sleeves 4a and 6a. Since the bearing sleeve and the shaft sleeve are in surface contact, the contact area is large, the specific pressure is small, and the contact surface is separated by lubricating oil. This working condition of small specific pressure and non-contact will enable the bearing sleeve and the shaft sleeve to have a longer service life.

[0048] Further, the transmission clutch shifting device includes a gear transmission shaft 11 provided with two gears. The gears 11a and 11b on the gear transmission shaft 11 are respectively meshed with the transmission gears 8 and 10 on the transmission shaft 1, and different gear transmission paths are realized through the spline sleeve 9.

[0049] Further, the spacer sleeve 5 can be cancelled in the middle of the first shaft sleeve 3 and the second shaft sleeve 7. At this time, the first shaft sleeve 3 and the second shaft sleeve 7 are installed in a direct contact manner in the middle, and annular oil grooves 3e, 7e and radial oil holes 3d, 7d are respectively arranged on the inner end faces of the first shaft sleeve 3 and the second shaft sleeve 7 to realize the penetration of lubricating oil.

[0050] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit them. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the purpose and scope of the present technical solution, and they should all be covered by the scope of the claims of the present invention.

Claims

1. A gearbox clutch shifting device, characterized in that: It includes a transmission shaft and a transmission gear arranged on the transmission shaft; a first bushing and a second bushing are installed on the transmission shaft, a first bearing sleeve and a second bearing sleeve are installed on the transmission gear, and the first bearing sleeve is matched with the first bushing; the second bearing sleeve is matched with the second bushing; bosses are provided on both the first bushing and the second bushing, and the bosses are used to limit the first bearing sleeve or the second bearing sleeve from the outside; a spacer sleeve is provided between the first bearing sleeve and the second bearing sleeve, an annular oil groove is formed on the spacer sleeve, and a plurality of radial oil holes are formed along the annular oil groove; a plurality of groups of first oil grooves are axially provided on the inner hole surfaces of the first bearing sleeve and the second bearing sleeve, and a plurality of groups of second oil grooves are radially provided at the positions where the first bearing sleeve and the second bearing sleeve are matched with the bosses, and the first oil grooves and the second oil grooves communicate axially and radially; external splines are provided on both the transmission gear and the transmission shaft; a spline sleeve is movably installed on the transmission shaft through an internal spline and meshes with the external splines on the transmission shaft and the external splines on the transmission gear respectively to realize the transmission of different transmission gears.

2. The gearbox clutch shifting device according to claim 1, wherein: An axial oil passage is provided on the transmission shaft, and a radial oil passage is formed at a position corresponding to the spacer sleeve. The axial oil passage communicates with the radial oil passage, and lubricating oil enters the annular oil groove provided on the spacer sleeve through the axial oil passage and the radial oil passage.

3. The gearbox clutch shifting device according to claim 1, characterized in that: The first bushing and the second bushing are fixed on the transmission shaft through a nut and a shaft shoulder provided on the transmission shaft.

4. The gearbox clutch shifting device according to claim 1, characterized in that: It further includes a gear shaft provided with gears. The number of the gears and the transmission gears matches and there are at least two. Different gear transmission paths are realized through the meshing of the gears and the transmission gears and the switching of the spline sleeve.

5. The gearbox clutch shifting device according to claim 1, wherein: The first bushing and the second bushing are installed in a direct contact manner, and an annular oil groove and radial oil holes are provided on the inner side cross sections of the first bushing and the second bushing to realize the penetration of lubricating oil.

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