Gearbox shafting bearing clearance adjusting device

Abstract

The utility model belongs to the technical field of mechanical transmission, and discloses a gear box shafting bearing clearance adjusting device which comprises a supporting assembly and an adjusting assembly, the supporting assembly comprises a supporting base, a top plate and a plurality of stand columns, the supporting base and the top plate are arranged at intervals in the vertical direction, and the stand columns extend in the vertical direction and are connected with the supporting base and the top plate. The supporting base can slide along the stand column. The adjusting assembly comprises a positioning piece and an adjusting piece, the positioning piece is arranged on the side, facing the supporting base, of the top plate and used for positioning and fixing an outer ring of a bearing set of the gearbox shafting, the adjusting piece is rotationally connected to the supporting base and used for being connected with a center shaft of the gearbox shafting, and the adjusting piece can drive the center shaft and an inner ring of the bearing set to move along the axis of the center shaft. The gear box shafting bearing clearance adjusting device can smoothly adjust the bearing clearance without depending on the original box body of the gear box and under the condition of adapting to various types of grounds, so that the maintenance time is effectively shortened, and the maintenance cost is effectively reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of mechanical transmission, in particular to a gear box shaft system bearing clearance adjustment device. Background Art

[0002] Gearboxes are important components widely used in mechanical transmissions. Their basic structure consists of a housing, a gearbox shaft system, and gears. The gearbox shaft system includes a central shaft and a bearing assembly mounted on the central shaft.

[0003] A common problem during gearbox shafting production is the need to adjust bearing clearances through a clearance-pulling process, which requires the original gearbox. However, when stock of the original gearbox is insufficient, bearing clearance adjustment cannot be performed and must be performed during repairs inside the engine room. However, temporary clearance adjustments on-site can easily fail to achieve the desired level of clearance due to varying surface flatness, leading to gearbox malfunctions and the need for repeated adjustments. This significantly increases repair time and costs.

[0004] Therefore, there is an urgent need for a gearbox shaft bearing clearance adjustment device to solve the above problems. Utility Model Content

[0005] The purpose of the utility model is to provide a gearbox shaft bearing clearance adjustment device, which can smoothly adjust the bearing clearance of the gearbox shaft without relying on the original gearbox body and adapting to various types of ground conditions, thereby effectively reducing maintenance time and cost.

[0006] To achieve this purpose, the present invention adopts the following technical solutions:

[0007] Gearbox shaft bearing clearance adjustment device, including:

[0008] A support assembly comprising a support base, a top plate, and a plurality of columns, wherein the support base and the top plate are spaced apart in a vertical direction, the columns extend in the vertical direction and connect the support base and the top plate, and the support base is capable of sliding along the columns;

[0009] An adjustment assembly includes a positioning member and an adjustment member. The positioning member is arranged on the side of the top plate facing the support base, and is used to position and fix the outer ring of the bearing group of the gearbox shaft system. The adjustment member is rotatably connected to the support base and is used to connect the central axis of the gearbox shaft system. The adjustment member can drive the central shaft and the inner ring of the bearing group to move along the axis of the central shaft.

[0010] Optionally, the positioning member includes a first positioning ring and a second positioning ring, the first positioning ring and the second positioning ring are joined and spliced ​​together to form a positioning sleeve, and the positioning sleeve is arranged outside the bearing group and has an interference fit with the outer ring of the bearing group.

[0011] Optionally, the positioning member further includes an adjustment pad, which is attached to the inner circumferential wall of the positioning sleeve, and the thickness of the adjustment pad is adjustable.

[0012] Optionally, positioning portions are protruding from inner walls of the ring openings of the first positioning ring and the second positioning ring on a side facing away from the top plate, and the positioning portions abut against the outer ring of the bearing group.

[0013] Optionally, a through hole is provided on the support base, and the column passes through the through hole. The support assembly further includes a plurality of legs, and the plurality of legs correspond one-to-one to the plurality of columns. The legs include a supporting portion, and the supporting portion is sleeved outside the column and abuts against and supports the bottom of the support base. The supporting portion can move along the axial direction of the column to drive the support base to slide along the column.

[0014] Optionally, an outer wall of the column is provided with an external thread, an inner wall of the support portion is provided with an internal thread, and the internal thread is connected to the external thread.

[0015] Optionally, the support leg further includes a grounding portion, which is coaxially arranged with the support portion and connected to a side of the support portion facing away from the support base, and the cross-sectional dimension of the grounding portion is larger than the cross-sectional dimension of the support portion.

[0016] Optionally, four columns are provided, and the four columns are arranged at intervals along the axis of the central axis.

[0017] Optionally, the gearbox shaft system further includes a transmission gear sleeved outside the central shaft, and the radial position of at least one of the columns along the central shaft is adjustable to pass through a corresponding through hole on the transmission gear.

[0018] Optionally, the adjusting member includes a connecting rod portion, an operating rod portion and a screw portion that are coaxially arranged in sequence, the connecting rod portion is coaxially connected to one end portion of the central axis, the screw portion is screwed to the support base, and an operating hole is radially penetrated on the operating rod portion, and the operating rod can be inserted into the operating hole to drive the operating rod portion to rotate around its own axis.

[0019] Beneficial effects of the utility model:

[0020] In the gearbox shaft bearing clearance adjustment device provided by the utility model, a support assembly replaces the gearbox body, providing stable support for the gearbox shaft. A support base and a top plate are vertically spaced apart, and vertical columns extend vertically to connect the support base and the top plate. The support base can slide along the columns. This arrangement ensures that even on uneven surfaces, the support base can be maintained level by adjusting its relative position on each column, thereby reducing the impact of floor flatness on clearance adjustment. The gearbox shaft is then mounted between the support base and the top plate using positioning members and adjustment members. The positioning members secure the outer ring of the bearing assembly, while the adjustment members move the center shaft and the inner ring of the bearing assembly along the axis of the center shaft. The distance the inner ring of the bearing moves within the outer ring of the bearing along the axis of the center shaft is the bearing clearance. This gearbox shaft bearing clearance adjustment device allows for smooth bearing clearance adjustment independent of the original gearbox body and adapts to various floor conditions, effectively reducing maintenance time and costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following is a brief introduction to the drawings required for use in the description of the embodiments of the present invention. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the contents of the embodiments of the present invention and these drawings without paying any creative work.

[0022] Figure 1 This is a structural diagram of the gearbox shaft bearing clearance adjustment device provided by an embodiment of the utility model after the gearbox shaft is installed;

[0023] Figure 2 This is a partial structural diagram of the gearbox shaft bearing clearance adjustment device provided by an embodiment of the utility model after the gearbox shaft is installed;

[0024] Figure 3 yes Figure 2 A schematic structural diagram of another perspective of the structure shown;

[0025] Figure 4 yes Figure 3 A partial enlarged view of point A in the middle;

[0026] Figure 5 This is a schematic structural diagram of a gearbox shaft bearing clearance adjustment device provided by an embodiment of the utility model;

[0027] Figure 6 It is an exploded view of the gearbox shaft bearing clearance adjustment device provided by an embodiment of the present utility model.

[0028] In the picture:

[0029] 101. Center shaft; 102. Bearing assembly; 103. Transmission gear; 104. End bearing;

[0030] 1. Support assembly; 11. Support base; 111. Support ring; 112. Avoidance; 113. Guide hole; 12. Top plate; 13. Column; 14. Support leg; 141. Support portion; 142. Ground portion;

[0031] 21. Positioning member; 211. First positioning ring; 212. Second positioning ring; 213. Positioning portion; 22. Adjusting member; 221. Connecting rod portion; 222. Operating rod portion; 2221. Operating hole; 223. Screw portion. DETAILED DESCRIPTION

[0032] The technical solution of the present invention will be further described below with reference to the accompanying drawings and through specific implementation methods.

[0033] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings herein can be arranged and designed in various different configurations.

[0034] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but rather merely represents selected embodiments of the present invention. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without creative effort are also within the scope of protection of the present invention.

[0035] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not require further definition or explanation in subsequent drawings.

[0036] In the description of the present utility model, it should be noted that the terms "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, or are the orientation or position relationship in which the utility model product is usually placed when in use. They are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance. In the description of the present utility model, unless otherwise specified, "multiple" means two or more.

[0037] It should also be noted that, in the description of this utility model, unless otherwise specified or limited, the terms "disposed" and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections. Those skilled in the art will understand the specific meanings of these terms in this utility model based on the specific circumstances.

[0038] In the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Moreover, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0039] In the description of this utility model, the term "and / or" is simply a description of the association relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character " / " in this utility model generally indicates that the related objects are in an "or" relationship.

[0040] The following describes embodiments of the present invention in detail. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended only to explain the present invention and are not to be construed as limiting the present invention.

[0041] This embodiment provides a bearing clearance adjustment device for a gearbox shaft system, such as Figure 1 and Figure 2 As shown, the gearbox shaft system includes a central shaft 101, a bearing assembly 102, a transmission gear 103, and end bearings 104. The bearing assembly 102 and end bearings 104 are respectively disposed at either end of the central shaft 101. The bearing assembly 102 includes a pair of mating tapered roller bearings. The transmission gear 103 is sleeved on the central shaft 101 and located between the bearing assembly 102 and the end bearings 104. The gearbox shaft system bearing clearance adjustment device provided in this embodiment is specifically used to measure and adjust the bearing clearance of the bearing assembly 102.

[0042] like Figure 1-Figure 3 As shown, the gearbox shaft bearing clearance adjustment device includes a support assembly 1. The support assembly 1 includes a support base 11, a top plate 12, and a plurality of columns 13. The support base 11 and the top plate 12 are spaced apart in the vertical direction, and the columns 13 extend in the vertical direction and are connected between the support base 11 and the top plate 12. The support base 11 and the top plate 12 form two upper and lower installation positions, and the plurality of columns 13 are arranged around the support base 11 and the top plate 12 to form a structure similar to a box frame, so that the support assembly 1 can replace the gearbox housing to support the gearbox shaft system.

[0043] Specifically, the support base 11 can slide relative to the columns 13 to be parallel to the horizontal direction. This arrangement allows the support base 11 to remain level even if the ground is uneven by adjusting the relative position of the support base 11 on each column 13, thereby reducing the impact of the ground flatness on the operator's gap adjustment operation.

[0044] Optionally, the centers of the support base 11 and the top plate 12 are both circular plates, and the line connecting the centers of the two circular plates coincides with the axis of the central axis 101. A plurality of connecting plates are radially arranged around the circumference of the circular plates, and the columns 13 are connected between two corresponding connecting plates of the support base 11 and the top plate 12 to support the support base 11 and the top plate 12.

[0045] In this embodiment, four connecting plates are evenly spaced around the circumference of the circular plate, and accordingly, four columns 13 are also provided. The four columns 13 are respectively connected between a set of connecting plates directly facing the support base 11 and the top plate 12. The line connecting any two directly facing columns 13 coincides with the diameter of the circular plate. The provision of four columns 13 effectively ensures force balance on the support base 11. Of course, in other embodiments, three sets of connecting plates and three columns 13 can also be provided to similarly ensure stable support of the support base 11.

[0046] More specifically, Figure 5 and Figure 6As shown, a through hole is provided on the support base 11, and a through hole is passed through the column 13. The support assembly 1 also includes a plurality of legs 14, and the plurality of legs 14 correspond to the plurality of columns 13 one by one. The leg 14 includes a support portion 141, which is sleeved on the outside of the column 13 and abuts and supports the bottom of the support base 11. The support portion 141 moves along the axial direction of the column 13, driving the support base 11 to slide along the column 13. In this embodiment, the outer wall of the column 13 is provided with an external thread, and the inner wall of the support portion 141 is provided with an internal thread, and the internal thread is engaged and connected to the external thread. When the ground where the support assembly 1 is placed is uneven, by screwing the support portion 141 on the column 13 at the corresponding position, the support portion 141 is moved up and down along the axial direction of the column 13, pushing the support base 11 to slide along the column 13, thereby ensuring that the support base 11 can remain level.

[0047] Optionally, when leveling the support base 11, a leveling member may be placed on the support base 11. The leveling member is preferably a spirit level in the prior art, which can be used to quickly and easily determine the inclination angle between the support base 11 and the horizontal plane, thereby assisting the operator in quickly leveling the support base 11.

[0048] More specifically, if Figure 6 As shown, the support leg 14 further includes a grounding portion 142, which is coaxially arranged with the support portion 141 and connected to the side of the support portion 141 facing away from the support base 11. The cross-sectional dimensions of the grounding portion 142 are larger than those of the support portion 141, and the contact area between the grounding portion 142 and the ground is larger, thereby improving the support stability of the support leg 14.

[0049] Continue to refer to Figure 1-Figure 3 、 Figure 5 and Figure 6 The gearbox shaft bearing clearance adjustment device includes an adjustment assembly. The adjustment assembly comprises a positioning member 21 and an adjustment member 22. Positioning member 21 is located on the side of top plate 12 facing support base 11 and is used to position and secure the outer ring of bearing assembly 102. Adjusting member 22 is connected to the end of central shaft 101 facing away from bearing assembly 102 and is rotationally connected to support base 11. Adjusting member 22 can drive vertical movement of central shaft 101 and the inner ring of bearing assembly 102.

[0050] That is, after the support assembly 1 is assembled and the support base 11 is leveled, the gearbox shaft system is installed between the support base 11 and the top plate 12 via the positioning member 21 and the adjusting member 22. The positioning member 21 is used to fix the outer ring of the bearing group 102, and the adjusting member 22 can drive the center shaft 101 and the inner ring of the bearing group 102 to move along the axis of the center shaft 101. The distance that the inner ring of the bearing moves in the outer ring of the bearing along the axis of the center shaft 101 is the bearing clearance. By providing the support assembly 1 and the adjusting assembly, the gearbox shaft system bearing clearance adjustment device can smoothly measure and adjust the bearing clearance without relying on the original gearbox housing and adapting to various types of ground conditions, effectively reducing maintenance time and costs.

[0051] Specifically, if Figure 1 、 Figure 2 and Figure 6 As shown, the positioning member 21 includes a first positioning ring 211 and a second positioning ring 212, which are joined together to form a positioning sleeve. The positioning sleeve is mounted on the outside of the bearing assembly 102, and the inner wall of the positioning sleeve has an interference fit with the bearing assembly 102. This interference fit prevents relative rotation between the inner wall of the positioning sleeve and the outer ring of the bearing assembly 102, thereby securing the outer ring of the bearing assembly 102.

[0052] Optionally, the positioning member 21 further includes an adjustment washer (not shown) attached to the inner wall of the positioning sleeve, and the thickness of the adjustment washer is adjustable. By sandwiching the adjustment washer between the inner wall of the positioning sleeve and the bearing assembly 102, an interference fit is achieved between the inner wall of the positioning sleeve and the bearing assembly 102. Furthermore, by varying the thickness of the adjustment washer or the number of adjustment washer stacked, the positioning sleeve can be adapted to accommodate bearing assemblies 102 of various sizes, thereby increasing the flexibility of the gearbox shaft bearing clearance adjustment device. In this embodiment, the adjustment washer is a nylon washer.

[0053] More specifically, Figure 4 As shown, the inner wall of the ring opening of the first positioning ring 211 and the second positioning ring 212 facing away from the top plate 12 is respectively provided with a positioning portion 213, which abuts the bottom of the outer ring of the bearing group 102. The positioning portion 213 can prevent the bearing group 102 from falling out of the positioning sleeve.

[0054] Continue to refer to Figure 2 、 Figure 5 and Figure 6 In order to improve the stability and reliability of the support base 11 supporting the central axis 101, a support ring 111 is provided on the side of the support base 11 facing the central axis 101, and the top of the support ring 111 abuts against the outer ring of the end bearing 104.

[0055] Optionally, the adjusting member 22 includes a connecting rod portion 221, an operating rod portion 222, and a screw portion 223, which are coaxially arranged in sequence. The connecting rod portion 221 is coaxially connected to the end of the central shaft 101 away from the bearing group 102, the screw portion 223 is screwed to the support base 11, and an operating hole 2221 is radially penetrated on the operating rod portion 222. The operating rod can be inserted into the operating hole 2221, and a load is applied to the operating rod, which can provide torque to the operating rod portion 222, thereby driving the operating rod portion 222 to rotate around its own axis, thereby driving the central shaft 101 to move in the vertical direction. The operating rod can be a wrench in the prior art or other rod-shaped or bar-shaped components that are convenient for applying a screwing load.

[0056] It is understandable that, since the operating rod 222 is located in the support ring 111 , in order to facilitate the operator's operation, a plurality of avoidance openings 112 are provided at intervals along the circumference of the support ring 111 , so that the operator can easily take and place the operating rod and rotate the operating rod 222 .

[0057] Optionally, the distance between at least one column 13 and the axis of the central shaft 101 is adjustable to allow a corresponding through hole on the transmission gear 103 to be penetrated. When the central shaft 101 moves in the vertical direction, the transmission gear 103 sleeved on the central shaft 101 moves accordingly. The column 13 penetrates the through hole on the transmission gear 103, which can provide a guide for the movement of the transmission gear 103. The distance between the column 13 and the axis of the central shaft 101 is adjustable to facilitate the guidance of transmission gears 103 of different diameters. In this embodiment, the distance between two columns 13 facing each other is adjustable to allow two corresponding through holes on the transmission gear 103 to be penetrated respectively. With this arrangement, the transmission gear 103 can be guided by the columns 13 on both sides to prevent the transmission gear 103 from being deflected due to uneven force.

[0058] Specifically, guide holes 113 are provided in the support base 11 and the top plate 12. The guide holes 113 are waist-shaped holes, and the length direction of the guide holes 113 coincides with the radial direction of the central axis 101. The columns 13 pass through the guide holes 113 in the support base 11 and the top plate 12 in sequence and can move along the guide holes 113, thereby adjusting the distance between the columns 13 and the axis of the central axis 101.

[0059] It should be noted that, in order to facilitate the movement of the columns 13, the diameters of the two adjustable columns 13 are smaller than the diameters of the two fixed columns 13. This arrangement not only reduces the difficulty of moving the columns 13, but also reduces the overall weight of the device, making it easier to transport.

[0060] Obviously, the above embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention, and are not intended to limit the implementation methods of the present invention. Those skilled in the art will appreciate that other variations or modifications can be made based on the above description. It is not necessary and impossible to enumerate all implementation methods here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the claims of the present invention.

Claims

1. Gearbox shaft bearing clearance adjustment device, characterized in that: include: A support assembly (1) comprises a support base (11), a top plate (12) and a plurality of columns (13), wherein the support base (11) and the top plate (12) are spaced apart in a vertical direction, the columns (13) extend in the vertical direction and connect the support base (11) and the top plate (12), and the support base (11) is capable of sliding along the columns (13); An adjustment assembly comprises a positioning member (21) and an adjustment member (22), wherein the positioning member (21) is arranged on a side of the top plate (12) facing the support base (11) and is used to position and fix the outer ring of the bearing group (102) of the gearbox shaft system, and the adjustment member (22) is rotatably connected to the support base (11) and is used to connect the central shaft (101) of the gearbox shaft system, and the adjustment member (22) can drive the central shaft (101) and the inner ring of the bearing group (102) to move along the axis of the central shaft (101).

2. The gearbox shaft bearing clearance adjustment device according to claim 1, characterized in that: The positioning member (21) comprises a first positioning ring (211) and a second positioning ring (212); the first positioning ring (211) and the second positioning ring (212) are joined and spliced ​​together to form a positioning sleeve; the positioning sleeve is arranged outside the bearing group (102) and is interference-fitted with the outer ring of the bearing group (102).

3. The gearbox shaft bearing clearance adjustment device according to claim 2, characterized in that: The positioning member (21) further comprises an adjustment pad, which is attached to the inner peripheral wall of the positioning sleeve and has an adjustable thickness.

4. The gearbox shaft bearing clearance adjustment device according to claim 2, characterized in that: Positioning portions (213) are respectively provided on the inner walls of the ring openings of the first positioning ring (211) and the second positioning ring (212) on the side facing away from the top plate (12), and the positioning portions (213) abut against the outer ring of the bearing assembly (102).

5. The gearbox shaft bearing clearance adjustment device according to claim 1, characterized in that: A through hole is provided on the support base (11), and the column (13) is penetrated by the through hole. The support assembly (1) further comprises a plurality of legs (14), and the plurality of legs (14) correspond one to one with the plurality of columns (13). The legs (14) comprise a supporting portion (141), and the supporting portion (141) is sleeved outside the column (13) and abuts against and supports the bottom of the support base (11). The supporting portion (141) can move along the axial direction of the column (13) to drive the support base (11) to slide along the column (13).

6. The gearbox shaft bearing clearance adjustment device according to claim 5, characterized in that: The outer wall of the column (13) is provided with an external thread, and the inner wall of the support portion (141) is provided with an internal thread, and the internal thread is connected to the external thread.

7. The gearbox shaft bearing clearance adjustment device according to claim 5, characterized in that: The support leg (14) further includes a grounding portion (142), the grounding portion (142) being coaxially arranged with the support portion (141) and connected to a side of the support portion (141) facing away from the support base (11), and the cross-sectional dimension of the grounding portion (142) being larger than the cross-sectional dimension of the support portion (141).

8. The gearbox shaft bearing clearance adjustment device according to any one of claims 1 to 7, characterized in that: Four upright posts (13) are provided, and the four upright posts (13) are spaced apart along the axis of the central axis (101).

9. The gearbox shaft bearing clearance adjustment device according to claim 8, characterized in that: The gearbox shaft system further includes a transmission gear (103) sleeved outside the central shaft (101), and at least one of the columns (13) is adjustable in radial position along the central shaft (101) to penetrate a corresponding through hole on the transmission gear (103).

10. The gearbox shaft bearing clearance adjustment device according to any one of claims 1 to 7, characterized in that: The adjusting member (22) comprises a connecting rod portion (221), an operating rod portion (222) and a screw portion (223) which are coaxially arranged in sequence. The connecting rod portion (221) is coaxially connected to one end of the central shaft (101), and the screw portion (223) is screwed to the support base (11). An operating hole (2221) is radially penetrated through the operating rod portion (222), and an operating rod can be inserted into the operating hole (2221) to drive the operating rod portion (222) to rotate around its own axis.

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