Fixing tool for installing bevel gear shaft nut

Abstract

The utility model discloses a fixing tool for installing a bevel gear shaft nut, a bevel gear is arranged at one end of a bevel gear shaft, a shaft is arranged at the other end of the bevel gear shaft, threads are arranged on the surface of a connecting shaft section of the shaft, and the fixing tool comprises a bottom plate and a support arranged perpendicular to the bottom plate; the fixed plate and the fixed seat are fixed on the support and are arranged at a preset interval; the fixing piece is in threaded fit connection with the connecting shaft section so as to lock the bevel gear shaft on the fixing tool; according to the fixing tool for installing the bevel gear shaft nut, the fixing plate and the fixing base are arranged to fix the bevel gear shaft, the meshing groove is formed in the fixing plate, the fixing piece is arranged to enable the tooth surface of the bevel gear to be tightly meshed with the meshing groove, the bevel gear is further stabilized, and the bevel gear is not prone to slipping and shaking in the installing process; product quality is ensured, and product production efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of bevel gear shaft assembly, and more specifically, to a fixing tool for installing a bevel gear shaft nut. Background Art

[0002] The bevel gear shaft is a mechanical component that integrates the bevel gear and the shaft. The bevel gear shaft of a certain type of turboshaft engine central transmission device has a bevel gear at one end and a shaft at the other end, and the surface of the connecting shaft section on the shaft is provided with threads. After installing the bearings at both ends of the active bevel gear shaft, select the adjustment pad, and tighten the special nut on the active bevel gear shaft through the wrench connected to the torque multiplier to complete the safety tightening action; install one end of the qualified bevel gear shaft in the boring hole of the central transmission device, and connect the other end to the outer shell of the central transmission device through threads. The high-speed rotating bevel gear requires a nut with a large fixing torque requirement to clamp it to ensure the meshing clearance of the bevel gear and the normal working state. Due to the small geometric size of the bevel gear shaft, it is not easy to fix, and when tightening the nut of the bevel gear shaft, a large torque needs to be applied, which is prone to slippage, causing damage to the machine parts and affecting production efficiency; the nut and the tooling surface are easily damaged during the tightening process and produce burrs and metal chips, which cause quality risks to the product.

[0003] Therefore, it is necessary to design an auxiliary tooling to fix the bevel gear shaft to prevent slipping due to the large fixing torque required for the nut during tightening the nut, causing shaking, damaging the bevel gear shaft and nut, and reducing the product's service life and production efficiency. Utility Model Content

[0004] An object of the present invention is to solve the above-mentioned problems and / or disadvantages and to provide advantages which will be described below.

[0005] In order to achieve these purposes and other advantages of the utility model, a fixing tool for installing a bevel gear shaft nut is provided, one end of the bevel gear shaft is a bevel gear, the other end is a shaft, and the surface of the connecting shaft section of the shaft is provided with threads, the fixing tool comprises: a bottom plate, and also comprises: a support arranged vertically on the bottom plate;

[0006] A fixing plate and a fixing seat fixed on the support and arranged at a predetermined interval;

[0007] A fixing part that is threadably connected to the connecting shaft section to lock the bevel gear shaft on the fixing fixture;

[0008] The fixing plate is provided with a circular hole I which matches with the external structure of the bevel gear, and the side of the circular hole I is provided with an engagement groove which engages with the tooth surface of the bevel gear;

[0009] The fixing seat is provided with a circular hole II which matches with the external structure of the shaft, and the axes of the circular hole I and the circular hole II coincide with each other.

[0010] Preferably, it further comprises: a multiplier fixing member fixed to the bottom plate;

[0011] The multiplier fixing piece is provided with a spline sleeve matched with the external spline of the torque multiplier.

[0012] Preferably, two opposite side surfaces of the bottom end of the multiplier fixing member are provided with sliding grooves;

[0013] The lower end of the support is provided with a sliding block that cooperates with the sliding groove;

[0014] Blocking pieces are provided at both ends of the bottom plate to limit the sliding block from sliding out of the sliding groove;

[0015] When the sliding block slides to one side of the multiplier fixing member and abuts against the blocking piece, the axes of the spline sleeve and the circular hole I coincide with each other.

[0016] Preferably, a plurality of fixing bolts are provided on the base plate.

[0017] Preferably, the fixing member is configured as a hexagonal nut.

[0018] The utility model includes at least the following beneficial effects: the bevel gear shaft is fixed by arranging a fixing plate and a fixing seat, and an engagement groove is arranged on the fixing plate, so that when the nut is installed, the bevel gear is firmly positioned and not easy to slip, and the bevel gear is evenly stressed and not easy to be damaged; a fixing piece is arranged so that the tooth surface of the bevel gear is tightly engaged with the engagement groove, further stabilizing the bevel gear so that it is not easy to slip and shake during installation, thereby ensuring product quality and improving product production efficiency.

[0019] Other advantages, objectives and features of the present invention will be reflected in part through the following description, and in part will be understood by those skilled in the art through research and practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural schematic diagram of a fixing tool for installing a bevel gear shaft nut in one embodiment of the utility model;

[0021] Figure 2 A cross-sectional view of a fixing tool for installing a bevel gear shaft nut in one embodiment of the utility model Figure Ⅰ ;

[0022] Figure 3 A cross-sectional view of a fixing tool for installing a bevel gear shaft nut in one embodiment of the utility model Figure II ;

[0023] Figure 4 The figure is a schematic structural diagram of a special wrench head in one embodiment of the utility model.

[0024] Markings in the figure: 1, base plate, 2, support, 21, slider, 3, fixing plate, 31, circular hole I, 32, meshing groove, 4, fixing seat, 41, circular hole II, 5, fixing part, 6, supporting seat, 61, slide groove, 7, multiplier fixing part, 71, spline sleeve, 8, baffle, 9, fixing bolt, 10, special wrench head. DETAILED DESCRIPTION

[0025] The present invention will be further described in detail below in conjunction with the accompanying drawings so that those skilled in the art can implement the invention with reference to the description.

[0026] It should be understood that terms such as “having”, “including” and “comprising” used herein do not recite the existence or addition of one or more other elements or combinations thereof.

[0027] It should be noted that in the description of the present invention, the orientation or position relationship indicated by the term is based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, and does 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 of the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0028] In the description of the present utility model, unless otherwise clearly stipulated and limited, the terms "installed", "provided with", "mounted / connected", "connected", etc. should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection. It can be a mechanical connection or an electrical connection. It can be a direct connection or an indirect connection through an intermediate medium. It can be the internal connection of two components. For ordinary technicians in this field, the specific meanings of the above terms in the utility model can be understood according to specific circumstances.

[0029] In addition, in the present invention, unless otherwise clearly specified and limited, the first feature being "above" or "below" the second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "above" and "above" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature being "below", "below" and "below" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0030] Example 1

[0031] A fixing fixture for installing a bevel gear shaft nut, the structure of which is as follows Figure 1-3As shown, one end of the bevel gear shaft is a bevel gear, the other end is a shaft, and the surface of the connecting shaft section of the shaft is provided with threads, and the fixing fixture comprises: a bottom plate 1, and also comprises: a support 2 arranged vertically on the bottom plate 1;

[0032] A fixing plate 3 and a fixing seat 4 fixed on the support 2 and arranged at a predetermined interval;

[0033] A fixing member 5 which is threadably connected to the connecting shaft section to lock the bevel gear shaft on the fixing fixture;

[0034] The fixing plate 3 is provided with a circular hole Ⅰ31 matched with the external structure of the bevel gear, and the side surface of the circular hole Ⅰ31 is provided with an engagement groove 32 engaged with the tooth surface of the bevel gear;

[0035] The fixing seat 4 is provided with a circular hole II41 matched with the external structure of the shaft, and the axes of the circular hole I31 and the circular hole II41 coincide with each other.

[0036] In actual application, the fixing member 5 is tightly attached to the lower surface of the fixing seat 4 after being tightened; the fixing plate 3 and the fixing seat 4 are arranged on one side of the support 2 in an "F" shape.

[0037] Working principle: During assembly, first pass the shaft end of the bevel gear shaft through the circular hole I31 and the circular hole II41 from top to bottom, then mesh the tooth surface of the bevel gear with the meshing groove 32 of the fixing plate 3, and finally lock the bevel gear shaft on the fixing fixture through the fixing piece 5. After the bevel gear shaft is fixed, use the special wrench head 10 (such as Figure 4 ) is meshed with the nut (i.e., the nut to be installed on the bevel gear shaft), and finally the pointer torque wrench can be connected to the upper end of the special wrench head 10 for tightening, or the pointer torque wrench and the special wrench head 10 can be connected through a torque multiplier, and the fixed torque (200N·m) corresponding to the nut assembly is transmitted to the special wrench head 10 and applied to the nut thread. The pointer torque wrench accurately applies the fixed torque within the tightening torque range of the bevel gear under normal working conditions, achieving a qualified nut fixed torque assembly operation.

[0038] The bevel gear shaft is fixed by setting a fixing plate 3 and a fixing seat 4, and an engagement groove 32 is set on the fixing plate 3, so that when the nut is installed, the bevel gear is firmly positioned and not easy to slip, and the bevel gear is evenly stressed and not easy to be damaged; the fixing piece 5 is set to make the bevel gear tooth surface tightly mesh with the engagement groove 32, further stabilizing the bevel gear so that it is not easy to slip and shake during installation, thereby ensuring product quality and improving product production efficiency.

[0039] Example 2

[0040] This embodiment 2 is a preferred embodiment of the present invention, and its specific structure is as follows Figure 1-3As shown, it discloses the following improvements based on the embodiment 1: it also includes: a multiplier fixing member 5 fixed to the base plate 1;

[0041] The multiplier fixing member 5 is provided with a spline sleeve 71 which cooperates with the external spline of the torque multiplier.

[0042] In actual application, the multiplier fixing member 5 includes: a support seat 6 fixed to one side of the base plate 1 and a multiplier fixing member 7 fixed to the upper end of the support seat 6 and arranged parallel to the fixing plate 3; wherein, the multiplier fixing member 7 is provided with a spline sleeve 71 that cooperates with the external spline of the torque multiplier.

[0043] Working principle: After the bevel gear shaft is fixed, the special wrench head 10 is meshed with the nut teeth, and then the lower end of the torque multiplier is passed through the spline sleeve 71 and connected to the upper end of the special wrench head 10, and the outer spline of the torque multiplier is placed in the spline sleeve 71 for positioning; finally, the pointer torque wrench is connected to the upper end of the torque multiplier to apply a fixed torque to the nut to complete the assembly of the nut.

[0044] The torque multiplier is positioned by setting the multiplier fixing part 5, so that the pointer torque wrench will not deviate or swing during the tightening of the nut, and the nut can maintain a stable working state in the subsequent assembly process; it is free from manual control of its position, maintains its working stability, avoids the device from falling off during the working process, is convenient for single-person operation, and saves labor.

[0045] Example 3

[0046] This embodiment 3 is a preferred embodiment of the present utility model, and the specific structure is as follows Figure 2-3 As shown, it discloses the following improvement based on the second embodiment: the two opposite sides of the bottom end of the multiplier fixing member 5 are provided with sliding grooves 61;

[0047] The lower end of the support 2 is provided with a slider 21 that cooperates with the slide groove 61;

[0048] The bottom plate 1 is provided with blocking pieces 8 at both ends to limit the slider 21 from sliding out of the slide groove 61;

[0049] When the sliding block 21 slides to one side of the multiplier fixing member 5 and abuts against the blocking piece 8, the axes of the spline sleeve 71 and the circular hole I31 coincide with each other.

[0050] In actual application, two opposite sides of the bottom end of the support 2 are provided with slide grooves 61;

[0051] The slider 21 can slide between the support seat 6 and the base along the extending direction of the slide groove 61 , and the sliding of the slider 21 drives the fixing plate 3 and the fixing seat 4 to slide along the extending direction of the slide groove 61 .

[0052] Working principle: During assembly, first move the support 2 to the side away from the multiplier fixing part 5. First, pass the shaft end of the bevel gear shaft through the circular hole Ⅰ31 and the circular hole Ⅱ41, and complete the locking and fixing of the bevel gear shaft through the fixing part 5; then place the special wrench head 10 on the nut, and make the special wrench head 10 mesh with the nut teeth; then push the support 2 with the bevel gear shaft to the side of the multiplier fixing part 5 through the slide groove 61 and abut against the baffle 8, so that the spline sleeve 71 and the axis of the bevel gear shaft coincide with each other; then pass the lower end of the torque multiplier through the spline sleeve 71 and connect it to the upper end of the special wrench head 10, and place the outer spline of the torque multiplier in the spline sleeve 71 for positioning; finally connect the pointer torque wrench to the upper end of the torque multiplier to apply a fixed torque to the nut to complete the assembly of the nut.

[0053] By setting the slide groove 61 and the slider 21 to move the support 2, it is beneficial to lock and fix the bevel gear shaft, especially when the height difference between the multiplier fixing piece 7 and the fixing plate 3 is small and the multiplier fixing piece 7 interferes with the placement of the bevel gear shaft; at the same time, the baffle 8 is set to limit and position the support 2 to ensure that the assembly work can be carried out quickly.

[0054] Example 4

[0055] This embodiment 4 is a preferred embodiment of the present utility model, and its specific structure is as follows Figure 1-3 As shown, the following improvement is disclosed based on the first embodiment: a plurality of fixing bolts 9 are provided on the base plate 1 .

[0056] In practical applications, four fixing bolts 9 are provided on the base plate 1 .

[0057] Working principle: The device is fixed on the workbench by fixing bolts 9 to ensure the stability of the nut tightening process.

[0058] Example 5

[0059] This embodiment 5 is a preferred embodiment of the present utility model, and its specific structure is as follows Figure 2-3 As shown, it discloses the following improvement based on the first embodiment: the fixing member 5 is configured as a hexagonal nut.

[0060] Working principle: The fixing part 5 is configured as a hexagonal nut, which can complete the tightening function while its parts are easy to obtain and replace; the hexagonal nut is tightened to make the bevel gear tooth surface tightly meshed with the meshing groove 32, further stabilizing the bevel gear so that it is not easy to slip and shake during installation, which can improve product production efficiency.

[0061] The above solutions are only an illustration of a preferred example, but are not limited thereto. When implementing the present utility model, appropriate replacement and / or modification can be performed according to user needs.

[0062] The number of devices and processing scales described here are used to simplify the description of the utility model. Applications, modifications and variations of the utility model are obvious to those skilled in the art.

[0063] Although the embodiments of the present invention have been disclosed above, they are not limited to the applications listed in the specification and the embodiments. It can be fully applied to various fields suitable for the present invention. For those familiar with the art, additional modifications can be easily realized. Therefore, without departing from the general concept defined by the claims and the scope of equivalents, the present invention is not limited to the specific details and the illustrations shown and described here.

Claims

1. A fixing fixture for installing a bevel gear shaft nut, wherein one end of the bevel gear shaft is a bevel gear, the other end is a shaft, and the surface of the connecting shaft section of the shaft is provided with threads, the fixing fixture comprising: The bottom plate is characterized in that it further comprises: a support arranged vertically on the bottom plate; A fixing plate and a fixing seat fixed on the support and arranged at a predetermined interval; A fixing part that is threadably connected to the connecting shaft section to lock the bevel gear shaft on the fixing fixture; The fixing plate is provided with a circular hole I which matches with the external structure of the bevel gear, and the side of the circular hole I is provided with an engagement groove which engages with the tooth surface of the bevel gear; The fixing seat is provided with a circular hole II which matches with the external structure of the shaft, and the axes of the circular hole I and the circular hole II coincide with each other.

2. The fixing device for installing the bevel gear shaft nut according to claim 1, characterized in that: Also includes: a multiplier fixture fixed to the base plate; The multiplier fixing piece is provided with a spline sleeve matched with the external spline of the torque multiplier.

3. The fixing device for installing the bevel gear shaft nut according to claim 2, characterized in that: The two opposite side surfaces of the bottom end of the multiplier fixing member are provided with sliding grooves; The lower end of the support is provided with a sliding block that cooperates with the sliding groove; Blocking pieces are provided at both ends of the bottom plate to limit the sliding block from sliding out of the sliding groove; When the sliding block slides to one side of the multiplier fixing member and abuts against the blocking piece, the axes of the spline sleeve and the circular hole I coincide with each other.

4. The fixing device for installing the bevel gear shaft nut according to claim 1, characterized in that: A plurality of fixing bolts are arranged on the bottom plate.

5. The fixing device for installing the bevel gear shaft nut according to claim 1, characterized in that: The fixing member is configured as a hexagonal nut.

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