Main cone anti-rotation device

Abstract

The present invention provides a main cone anti-rotation device, which is installed on a reduction housing of a main reducer, and comprises a connecting plate and a limiting mechanism, wherein the connecting plate is fixed on the reduction housing, and the connecting plate has a top surface and a bottom surface which are arranged opposite to each other; the limiting mechanism is arranged on the bottom surface, and the limiting mechanism comprises a stop block, which is arranged along the radial direction of the main cone anti-rotation device, and is used to be connected with the transmission mechanism of the main reducer, that is, the limiting mechanism is connected with the driven cylindrical gear, and accurate positioning in the radial direction is achieved without adding limiting parts, thereby preventing the driven cylindrical gear which rotates synchronously with the transmission shaft from rotating, and further preventing the transmission shaft from rotating, that is, locking the transmission shaft, and achieving the purpose of quickly tightening the nut.

Description

Technical Field

[0001] The invention relates to the technical field of automobile parts assembly, in particular to a main cone anti-rotation device. Background Art

[0002] The automobile main reducer includes a reduction housing and a driving bevel gear assembly installed in the reduction housing. During the assembly process of the driving bevel gear (also called the main bevel) assembly, a nut needs to be tightened to limit the relative position (i.e., axial clearance) between the driving bevel gear assembly, the driving bevel gear bearing, and the driven cylindrical gear of the driving bevel gear assembly in the axial direction, wherein the driven cylindrical gear is installed on the transmission shaft of the driving bevel gear assembly and rotates with the transmission shaft. Specifically, the nut is connected to the external thread at the end of the transmission shaft to press the driving bevel gear bearing installed at one end of the transmission shaft in the axial direction. In the process of rotating the nut, the transmission shaft rotates with the nut, and the rotating transmission shaft drives the driven cylindrical gear to rotate, resulting in a slow speed of tightening the nut to the specified torque or the inability to tighten the nut to the specified torque. Summary of the invention

[0003] In view of the deficiencies in the prior art, an object of the present invention is to provide a main cone anti-rotation device which can quickly tighten a nut and has high positioning accuracy.

[0004] To achieve the above-mentioned purpose, the present invention provides a main cone anti-rotation device, which adopts the following technical scheme: a main cone anti-rotation device, which is installed on the reduction housing of the main reducer, and includes a connecting plate and a limiting mechanism, wherein the connecting plate is fixed on the reduction housing, and the connecting plate has a top surface and a bottom surface which are relatively arranged; the limiting mechanism is arranged on the bottom surface, and the limiting mechanism includes a stop block, which is arranged along the radial direction of the main cone anti-rotation device, and is used to connect with the transmission mechanism of the main reducer.

[0005] Furthermore, the anti-rotation block has an outer wall and an inner wall that are relatively arranged, the inner wall is closer to the axis of the main cone anti-rotation device than the outer wall in the radial direction of the main cone anti-rotation device, and the inner wall has at least one locking tooth protruding along the radial direction of the main cone anti-rotation device, and the locking tooth is used to engage with the cylindrical gear of the transmission mechanism.

[0006] Furthermore, the limiting mechanism includes a fixed block, which is fixed on the bottom surface of the connecting plate. The fixed block has two side walls arranged opposite to each other, one of which is closer to the axis of the main cone anti-rotation device than the other side wall, and a fixing groove is provided on the side wall close to the axis of the main cone anti-rotation device, and the anti-rotation block is installed in the fixing groove.

[0007] Furthermore, the limiting mechanism also includes a limiting block, which is fixed on a side wall of the fixed block close to the axis of the main cone anti-rotation device and is located between the bottom surface and the stop block. The limiting block has a limiting portion extending along the radial direction of the main cone anti-rotation device, and the limiting portion is used to engage with the reduction housing.

[0008] Furthermore, the limiting portion is closer to the axis of the main cone anti-rotation device than the end of the locking tooth, and the limiting portion is used to engage with the slot of the reduction housing.

[0009] Furthermore, the connecting plate is provided with a through hole extending from the top surface toward the bottom surface and penetrating the top surface and the bottom surface, the limiting mechanism is located outside the through hole, and the top surface is provided with a first positioning groove along the radial direction of the main cone anti-rotation device.

[0010] Furthermore, the anti-rotation block extends in a first direction, the first positioning groove extends in a second direction and passes through two opposite side walls of the connecting plate, and the second direction intersects with the first direction.

[0011] Furthermore, the limiting mechanism includes a positioning sleeve, the positioning sleeve cooperates with the through hole, and the top of the positioning sleeve abuts against the top surface, and the top of the positioning sleeve is provided with a second positioning groove corresponding to the first positioning groove along the radial direction of the main cone anti-rotation device.

[0012] Furthermore, a mounting portion is extended on a side edge of the connecting plate along a radial direction of the main cone anti-rotation device and in a direction away from the main cone anti-rotation device, and the limiting mechanism is mounted on a bottom surface of the mounting portion.

[0013] The beneficial effect of the present invention is that the main cone anti-rotation device of the present invention is provided with a limiting mechanism. When the main cone anti-rotation device is installed on the top of the main reduction housing for use, the limiting mechanism is connected to the transmission mechanism, that is, the limiting mechanism is connected to the driven cylindrical gear of the transmission mechanism, and accurate positioning in the radial direction is achieved without adding limiting parts, thereby preventing the driven cylindrical gear that rotates synchronously with the transmission shaft from rotating, and further preventing the transmission shaft from rotating, that is, locking the transmission shaft, thereby achieving the purpose of quickly tightening the nut. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a three-dimensional combined diagram of the main cone anti-rotation device of the present invention;

[0015] Figure 2 for Figure 1 Another perspective of the three-dimensional exploded view;

[0016] Figure 3 It is a schematic diagram of the main cone anti-rotation device in use state of the present invention;

[0017] Figure 4 for Figure 3 A partial schematic diagram of

[0018] Figure 5 for Figure 3 A partial three-dimensional cross-sectional view of

[0019] Figure 6 for Figure 3 The state diagram of the nut when it is tightened;

[0020] Figure 7 for Figure 6 sectional view of . DETAILED DESCRIPTION

[0021] Below, in conjunction with the accompanying drawings and specific embodiments, the present invention is further described:

[0022] It should be noted that when an element is considered to be "connected" to another element, it may be directly connected to another element and integrated therewith, or there may be an intermediate element at the same time. The terms "installed", "one end", "the other end" and similar expressions used herein are for illustrative purposes only.

[0023] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art. The terms used in the specification herein are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0024] like Figures 1 to 7 As shown, the present invention provides a main cone anti-rotation device, which is installed on the reduction housing 1 of the main reducer, and includes a connecting plate 2 and a limiting mechanism 3. The connecting plate 2 is fixed on the reduction housing 1, and the limiting mechanism 3 is installed on the connecting plate 2.

[0025] like Figure 1 , Figure 2 As shown, the connecting plate 2 has a top surface 21 and a bottom surface 22 that are arranged opposite to each other. The connecting plate 2 is provided with a through hole 23 that penetrates the top surface 21 and the bottom surface 22 from the top surface 21 toward the bottom surface 22. The through hole 23 is located at the center of the connecting plate 2. The top surface 21 is provided with a first positioning groove 24 along the radial direction of the main cone anti-rotation device. The first positioning groove 24 extends in the second direction and passes through the opposite side walls of the connecting plate 2. The first positioning groove 24 is used to engage with the positioning block (not shown) of the automatic tightening device of the nut 5, so that the relative position of the connecting plate 2 and the automatic tightening device is correct. The side edge of the connecting plate 2 is provided with a mounting portion 25 that extends along the radial direction of the main cone anti-rotation device and in a direction away from the main cone anti-rotation device.

[0026] The limiting mechanism 3 is arranged on the bottom surface 22, and the limiting mechanism 3 is installed on the bottom surface 22 of the mounting portion 25. The limiting mechanism 3 is located outside the through hole 23, and the limiting mechanism 3 includes a fixing block 32, a rotation-stopping block 31, a limiting block 33 and a positioning sleeve 34, and the rotation-stopping block 31, the limiting block 33 and the positioning sleeve 34 are all installed on the fixing block 32, and the fixing block 32 is fixed to the bottom surface 22 of the connecting plate 2 by screws or pins. The fixing block 32 has two side walls arranged oppositely, wherein one side wall (inner side wall) is closer to the axis of the main cone anti-rotation device than the other side wall (outer side wall), and a fixing groove 321 is provided on one side wall close to the axis of the main cone anti-rotation device.

[0027] like Figure 3 , Figure 4 As shown, the anti-rotation block 31 is installed in the fixing groove 321 by screws or pins. The anti-rotation block 31 is arranged along the radial direction of the main cone anti-rotation device and is used to connect with the transmission mechanism 4 of the main reducer. Figure 5 , Figure 6 As shown in the figure), the limiting mechanism 3 is connected to the transmission mechanism 4, that is, the limiting mechanism 3 is connected to the driven cylindrical gear 41 of the transmission mechanism 4, and accurate positioning in the radial direction is achieved without adding limiting parts, thereby preventing the driven cylindrical gear 41 that rotates synchronously with the transmission shaft 42 from rotating, and further preventing the transmission shaft 42 from rotating, that is, locking the transmission shaft 42, so as to achieve the purpose of quickly tightening the nut 5.

[0028] like Figure 2 , Figure 4 As shown, specifically, the stop block 31 extends in a first direction, and the first direction intersects with the second direction, so that the stop block 31 is misaligned with the first positioning groove 24 to ensure that the stop block 31 has sufficient installation space. The stop block 31 has an outer side wall 311 and an inner side wall 312 that are arranged opposite to each other. The inner side wall 312 is closer to the axis of the main cone anti-rotation device than the outer side wall 311 in the radial direction of the main cone anti-rotation device. The inner side wall 312 protrudes along the radial direction of the main cone anti-rotation device with at least one locking tooth 3121, and the locking tooth 3121 is used to mesh with the cylindrical gear 41 of the transmission mechanism 4 (such as Figure 5 As shown in the figure, the transmission shaft 42 is locked in the radial direction to prevent the transmission shaft 42 from rotating during the process of tightening the nut 5, and the positioning method of the locking teeth 3121 meshing with the cylindrical gear 41 can improve the positioning accuracy of the main cone anti-rotation device. In the embodiment, there are two locking teeth 3121. Of course, in other embodiments, only one locking tooth 3121 can be provided to ensure that the transmission shaft 42 can be locked.

[0029] like Figure 6 , Figure 7 The limit block 33 shown is fixed to the side wall of the fixing block 32 close to the axis of the main cone anti-rotation device by screws, and is located between the bottom surface 22 and the stop block 31. The limit block 33 has a limit portion 331 extending along the radial direction of the main cone anti-rotation device. The limit portion 331 is used to engage with the reduction housing 1. Specifically, the limit portion 331 is closer to the axis of the main cone anti-rotation device than the end of the locking tooth 3121. The limit portion 331 is used to engage with the slot 11 of the reduction housing 1. By setting the limit portion 331, the position of the connecting plate 2 can be limited in the radial direction to prevent the main cone anti-rotation device from moving in the radial direction.

[0030] The positioning sleeve 34 cooperates with the through hole 23 to limit the connecting plate 2 in the radial direction to prevent the connecting plate 2 from moving in the radial direction, and the top of the positioning sleeve 34 abuts against the top surface 21 to position the connecting plate 2 in the axial direction to prevent the main cone anti-rotation device from moving upward in the axial direction. The top of the positioning sleeve 34 is provided with a second positioning groove 341 corresponding to the first positioning groove 24 along the radial direction of the main cone anti-rotation device. The second positioning groove 341 is used to engage with the positioning block of the automatic tightening device of the nut 5, so that the relative positions of the positioning sleeve 34 and the positioning block of the automatic tightening device of the nut 5 are correct.

[0031] When using the main cone anti-rotation device, first install it on the reduction housing 1, and align it with the mounting hole of the reduction housing 1 for mounting the nut 5, and the locking teeth 3121 extend into the reduction housing 1 and engage with the teeth of the cylindrical gear 41. At this time, the transmission shaft 42 is locked by the locking teeth 3121, and then the nut 5 automatic tightening device is started to tighten the nut 5 until the torque is met (that is, it is tightened into place), and then the main cone anti-rotation device is removed.

[0032] The main cone anti-rotation device of the present invention is provided with a limiting mechanism. When the main cone anti-rotation device is installed on the top of the main reduction housing for use, the limiting mechanism is connected to the transmission mechanism, that is, the limiting mechanism is connected to the driven cylindrical gear of the transmission mechanism, and accurate positioning in the radial direction is achieved without adding limiting parts, thereby preventing the driven cylindrical gear that rotates synchronously with the transmission shaft from rotating, and further preventing the transmission shaft from rotating, that is, locking the transmission shaft, thereby achieving the purpose of quickly tightening the nut.

[0033] The above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, a person skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or the axis-dividing technical features may be replaced by equivalent ones, and these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A main cone anti-rotation device, installed on the reduction housing of the main reducer, characterized in that: The cam is configured to move the upper and lower surfaces of the camshafts toward the bottom of the camshaft, and the camshafts are configured to move the upper and lower surfaces of the camshafts toward the bottom of the camshaft. The axis of the anti-rotation device, the inner wall protrudes with at least one locking tooth in the radial direction of the main cone anti-rotation device, and the locking tooth is used to engage with the cylindrical gear of the transmission mechanism; the fixed block is fixed on the bottom surface of the connecting plate, and the limit block is fixed on a side wall of the fixed block close to the axis of the main cone anti-rotation device, and is located between the bottom surface and the stop block, and the limit block extends a limiting portion in the radial direction of the main cone anti-rotation device, and the limiting portion is used to engage with the slot of the reduction housing, and the limiting mechanism includes a positioning sleeve, the positioning sleeve cooperates with the through hole, and the top of the positioning sleeve abuts against the top surface.

2. The main cone anti-rotation device according to claim 1, characterized in that: The fixing block has two side walls arranged opposite to each other, one of which is closer to the axis of the main cone anti-rotation device than the other side wall, and a fixing groove is formed on the side wall close to the axis of the main cone anti-rotation device, and the anti-rotation block is installed in the fixing groove.

3. The main cone anti-rotation device according to claim 1, characterized in that: The limiting portion is closer to the axis of the main cone anti-rotation device than the end of the locking tooth.

4. The main cone anti-rotation device according to claim 1, characterized in that: A first positioning groove is formed on the top surface of the connecting plate along the radial direction of the main cone anti-rotation device.

5. The main cone anti-rotation device according to claim 4, characterized in that: The anti-rotation block extends in a first direction, the first positioning groove extends in a second direction and passes through two opposite side walls of the connecting plate, and the second direction intersects with the first direction.

6. The main cone anti-rotation device according to claim 4, characterized in that: A second positioning groove corresponding to the first positioning groove is formed on the top of the positioning sleeve along the radial direction of the main cone anti-rotation device.

7. The main cone anti-rotation device according to claim 1, characterized in that: A mounting portion is provided on the side edge of the connecting plate along the radial direction of the main cone anti-rotation device and in a direction away from the main cone anti-rotation device, and the limiting mechanism is mounted on the bottom surface of the mounting portion.

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