Tool for adjusting axial clearance of gear box cone shaft system

Abstract

The utility model discloses a tool for adjusting the axial clearance of a conical shaft system of a gear box, which relates to the technical field of axial clearance measurement and comprises a frame and a positioning assembly arranged on the surface of the frame and used for limiting a box body. The detection assembly is arranged on the surface of the frame and is used for measuring the axial clearance of the conical bearing in the conical box body; and the pressure applying assembly is used for applying axial pressure to a shaft piece in the cone box body so that an axial gap can be generated between an upper conical bearing and a lower conical bearing which are connected with the shaft piece. By arranging the first adjusting part, the positioning space of the positioning assembly can be adjusted according to the length and width of the box body, the box body clamping and fixing device is suitable for clamping and fixing box bodies of different specifications, meanwhile, the second adjusting part is further arranged, the distance between the first pressure applying part or the second pressure applying part and the end face of the shaft piece can be adjusted, and the clamping and fixing effect is good. Therefore, the tool is suitable for applying pressure to shafts with different heights and detecting the axial clearance, so that the tool is relatively high in universality.

Description

Technical Field

[0001] The utility model relates to the technical field of axial clearance measurement, in particular to an axial clearance adjustment tool for a tapered shaft system of a gear box. Background Art

[0002] During the assembly process of the cone box, the axial clearance of the shaft tapered bearing needs to be controlled within a certain range. The axial clearance value will affect the rolling fatigue life, temperature rise, noise, vibration and other performance of the bearing. It is difficult to meet the standard in one go during manual assembly, so it is necessary to measure and correct it by adjusting the tooling later.

[0003] To understand the structure of the cone box, please refer to Figure 5 and Figure 6 The existing cone box generally includes a box with upper and lower openings, and a cone bearing is arranged near the upper and lower openings in the box. A shaft passes through the cone bearings, a gear is arranged at one end of the shaft, and a locking nut is threadedly connected to the other end of the shaft. The adjustment principle of the axial clearance is: when the locking nut is tightened, the axial clearance of the upper and lower cone bearings will be shortened, that is, the axial clearance will be reduced; conversely, when the locking nut is loosened, the axial clearance of the upper and lower cone bearings will be extended, that is, the axial clearance will be increased.

[0004] The Chinese utility model patent with the authorization announcement number CN207816155U discloses an axial clearance measuring device for aircraft accessories. This technical solution can be used for measuring and correcting the axial clearance of a cone box. It uses a pull pressure gauge to pull down and push up the center rod. The pulling pressure eliminates the clearance inside the accessory that affects the accurate value of the axial measurement, and cooperates with the first and second limiters to adjust and correct the axial clearance. The micrometer measures the difference between the upper and lower limits of the disk shaft to achieve the measurement and correction of the axial clearance. However, the applicant found that the technical solution has the following defects: the clamping structure and detection structure of the measuring tool are only applicable to the same specification of the tested parts. When it is necessary to fix the tested parts of another specification, it is necessary to replace the new clamping structure and detection structure, which is time-consuming and labor-intensive. Therefore, the versatility of the entire tool is poor. Utility Model Content

[0005] The utility model aims to provide an axial clearance adjustment tool for a gearbox tapered shaft system to solve the technical problem raised by the above background technology that the axial clearance detection tool on the market currently cannot be adaptively adjusted according to the specifications of the detected parts of different specifications.

[0006] In order to achieve the above-mentioned purpose, the utility model provides the following technical solutions: a tool for adjusting the axial clearance of a tapered shaft system of a gear box, comprising:

[0007] A frame and a positioning component disposed on the surface of the frame for limiting the position of the box body;

[0008] A detection component disposed on the surface of the frame for measuring the axial clearance of the tapered roller bearing in the tapered box body;

[0009] A pressing component for applying an axial pressure to the shaft member in the tapered box body so as to generate an axial clearance between the upper and lower tapered roller bearings connected to the shaft member. The pressing component respectively includes: a first pressing member for pressing downward from the top end of the shaft member and a second pressing member for pressing upward from the bottom end of the shaft member;

[0010] The adjustment tooling further includes:

[0011] A first adjusting member for adjusting the positioning space of the positioning component according to the length and width of the box body;

[0012] A second adjusting member for adjusting the distance between the first pressing member or the second pressing member and the end face of the shaft member according to the height of the shaft member.

[0013] As a preferred technical solution of the present invention, the frame includes a bottom plate and columns arranged along the four sides of the bottom plate and extending upward. The top ends of the columns are provided with a top plate, and a through groove for the box body to pass through is formed on the surface of the top plate.

[0014] As a preferred technical solution of the present invention, the positioning component includes at least two positioning parts arranged opposite to the tapered box body. The positioning part includes:

[0015] A connecting rod through which a first positioning hole is formed;

[0016] A second positioning hole formed on the upper surface of the top plate;

[0017] A first bolt with one end passing through the first positioning hole and the second positioning hole;

[0018] A first nut matched with the threaded end of the first bolt;

[0019] A second bolt with one end passing through the first positioning hole and a third positioning hole formed on the box body;

[0020] A second nut matched with the threaded end of the second bolt. The first bolt and the second bolt are combined with each other to form at least three fixing points on each connecting rod.

[0021] As a preferred technical solution of the present invention, each connecting rod is provided with two first bolts and one second bolt.

[0022] As a preferred technical solution of the present invention, the first adjusting member includes:

[0023] A strip-shaped positioning hole formed by combining multiple of the first positioning holes along the length direction of the connecting rod;

[0024] An annular positioning hole formed by combining multiple of the second positioning holes in a central annular array with respect to the through groove. Pushing the connecting rod can drive the first bolt to slide circularly along the annular positioning hole while moving linearly along the strip-shaped positioning hole, so as to adjust the distance between the two connecting rods according to the size of the box body.

[0025] As a preferred technical solution of the present utility model, the detection assembly includes:

[0026] A dial indicator fixing seat arranged at the upper end of the top plate;

[0027] A dial indicator connected to the dial indicator fixing seat, and the measuring rod of the dial indicator abuts against the outer end face of the locking nut.

[0028] As a preferred technical solution of the present utility model, the first pressing member includes: a first hydraulic jack arranged at the upper end of the top plate, and the output end of the first hydraulic jack contacts the top end of the shaft member; the second pressing member includes: a second hydraulic jack arranged at the upper end of the bottom plate, and the output end of the second hydraulic jack contacts the bottom end of the shaft member.

[0029] As a preferred technical solution of the present utility model, the second adjusting member includes:

[0030] Two screws oppositely arranged at the upper end of the top plate;

[0031] A jack fixing cross beam connected to the first hydraulic jack, and two through holes slidably matched with the screws are formed in the jack fixing cross beam, so that the jack fixing cross beam can be lifted and lowered along the screws;

[0032] A height adjusting block arranged on the screw;

[0033] A third nut threadedly matched with one end of the screw.

[0034] Compared with the prior art, the beneficial effects of the present utility model are:

[0035] By setting the first adjusting member, the present utility model can adjust the positioning space of the positioning assembly according to the length and width of the box body, adapt to clamping and fixing boxes of different specifications, and at the same time, a second adjusting member is also provided, which can adjust the distance between the first pressing member or the second pressing member relative to the end face of the shaft member, so as to adapt to pressing shaft members of different heights and detect the axial clearance. Therefore, the tooling has strong versatility, and through model data verification, the taper box body measuring tooling can be applied to all models of taper box bodies currently produced by our company. Description of the Drawings

[0036] Figure 1 It is a schematic top-down three-dimensional structure diagram of the present utility model;

[0037] Figure 2 It is a schematic bottom-up three-dimensional structure diagram of the present utility model;

[0038] Figure 3 For the present utility model Figure 2 The enlarged structure diagram at position A;

[0039] Figure 4 It is a schematic top view structure diagram of the present utility model;

[0040] Figure 5 It is a schematic structure diagram of the pressure application state at the top end of the shaft member of the present utility model;

[0041] Figure 6 It is a schematic structure diagram of the pressure application state at the bottom end of the shaft member of the present utility model.

[0042] In the figure: 1, bottom plate; 2, pillar; 3, top plate; 4, through groove; 5, connecting rod; 6, strip-shaped positioning hole; 7, annular positioning hole; 8, first bolt; 9, first nut; 10, third positioning hole; 11, second bolt; 12, second nut; 13, screw rod; 14, jack fixing cross beam; 15, first hydraulic jack; 16, height adjusting block; 17, third nut; 18, second hydraulic jack; 19, dial indicator fixing seat; 20, dial indicator; 21, box body; 22, shaft member; 23, locking nut; 24, tapered bearing. Specific embodiments

[0043] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments.

[0044] Please refer to Figure 1-6 , the present utility model provides a technical solution: a gearbox cone shaft system axial clearance adjustment tooling, including a frame, the frame includes a bottom plate 1 and pillars 2 arranged around the bottom plate 1 and extending upward, the top ends of the pillars 2 are provided with a top plate 3, and a through groove 4 for the box body 21 to pass through is opened on the surface of the top plate 3;

[0045] As Figure 1 and Figure 3As shown, a positioning assembly is provided on the surface of the frame for limiting the position of the box body 21; in this embodiment, the positioning assembly includes at least two positioning parts arranged relative to the cone box body, and the positioning parts include: a connecting rod 5 penetrating a first positioning hole; penetrating a second positioning hole opened on the upper surface of the top plate 3; a first bolt 8 penetrating the first positioning hole and the second positioning hole at one end; a first nut 9 matched with the threaded end of the first bolt 8; a second bolt 11 penetrating the first positioning hole and the third positioning hole 10 opened in the box body 21 at one end; a second nut 12 matched with the threaded end of the second bolt 11, the first bolt 8 and the second bolt 11 are combined with each other to form at least three fixations on each connecting rod 5; preferably, each connecting rod 5 is provided with two first bolts 8 and one second bolt 11;

[0046] The above technical solution can be used to fix the conical box to prevent it from moving during the detection process. The specific operation is: align the first positioning hole of the connecting rod 5 with the second positioning hole of the top plate 3, use the first bolt 8 to pass through the first positioning hole and the second positioning hole, and use the first nut 9 to fix the first bolt 8, repeat the above operation to install another connecting rod 5 on the upper end of the top plate 3, and then place the box 21 into the through groove 4 and between the two connecting rods 5, use the second bolt 11 to pass through the third positioning hole 10 on the surface of the box 21 and the first positioning hole of the connecting rod 5, use the second nut 12 to fix the second bolt 11, and complete the fixation of one side of the box 21, repeat the above operation, fix the other side of the box 21, and thus complete the limiting of the box 21.

[0047] like Figure 1 and Figure 4 As shown, the adjustment tool also includes: a first adjustment component for adjusting the positioning space of the positioning assembly according to the length and width of the box body 21; in this embodiment, the first adjustment component includes: a strip positioning hole 6 composed of a plurality of first positioning holes along the length direction of the connecting rod 5; an annular positioning hole 7 composed of a plurality of second positioning holes about the central annular array of the through groove 4, and pushing the connecting rod 5 can drive the first bolt 8 to slide along the annular positioning hole 7 and move linearly along the strip positioning hole 6, so as to adjust the distance between the two connecting rods 5 according to the size of the box body 21;

[0048] The above technical solution can be used to adjust the spacing of the connecting rods 5 according to the different diameters of the box body 21. The two connecting rods 5 are moved to adjust the spacing between the two connecting rods 5. When the connecting rod 5 is moved, the first bolt 8 is driven to slide in a circle along the annular positioning hole 7. When the first bolt 8 slides along the annular positioning hole 7, it also slides in a straight line along the strip positioning hole 6, so that the strip positioning hole 6 is aligned with the third positioning hole 10. Then, the first bolt 8 and the second bolt 11 are used to fix the connecting rod 5 to both the top plate 3 and the box body 21. The same steps will not be repeated.

[0049] As Figure 1 and Figure 2 shown, the adjustment tooling further includes: a pressing component for applying an axial pressure to the shaft member 22 in the conical box body to generate an axial gap between the upper and lower tapered bearings 24 connected to the shaft member 22. The pressing component respectively includes: a first pressing member for pressing downward from the top end of the shaft member 22 and a second pressing member for pressing upward from the bottom end of the shaft member 22. In this embodiment, the first pressing member includes: a first hydraulic jack 15 provided at the upper end of the top plate 3, and the output end of the first hydraulic jack 15 contacts the top end of the shaft member 22; the second pressing member includes: a second hydraulic jack 18 provided at the upper end of the bottom plate 1, and the output end of the second hydraulic jack 18 contacts the bottom end of the shaft member 22;

[0050] Adopting the above technical solution can press the top end and the bottom end of the shaft member 22 respectively, so as to generate an axial gap between the two tapered bearings 24 in the box body 21. Referring to Figure 5 , when it is necessary to press the top end of the shaft member 22 downward, operate the first hydraulic jack 15 to move its output end downward. The output end of the first hydraulic jack 15 presses the shaft member 22 downward. Since the box body 21 is fixed by the positioning component and cannot move, only the tapered bearing 24 will move downward relative to the box body 21, thereby generating an axial gap;

[0051] As Figure 6 shown, when it is necessary to press the bottom end of the shaft member 22 upward, operate the second hydraulic jack 18 to move its output shaft upward. The output shaft of the second hydraulic jack 18 jacks up the shaft member 22 upward. Since the box body 21 is fixed by the positioning component and cannot move, only the tapered bearing 24 will move upward relative to the box body 21, thereby generating an axial gap.

[0052] As Figure 1 shown, the adjustment tooling further includes: a detection component provided on the surface of the frame for measuring the axial gap of the tapered bearing 24 in the conical box body; in this embodiment, the detection component includes: a dial indicator fixing seat 19 provided at the upper end of the top plate 3; a dial indicator 20 connected to the dial indicator fixing seat 19, and the measuring rod of the dial indicator 20 abuts against the outer end face of the lock nut 23;

[0053] The above technical solution can measure the axial clearance generated by the above pressure-applying component acting on the tapered bearing 24. The measurement principle is very simple. Since an external thread is provided on the outer part of the shaft member 22 and a corresponding internal thread is provided inside the locking nut 23, the locking nut 23 and the shaft member 22 are fixed by a threaded manner. When the shaft member 22 moves up and down, it will drive the connected locking nut 23 to move. By touching the measuring rod of the dial indicator 20 against the locking nut 23, the value of the axial clearance can be measured. The adjustment principle of the axial clearance: When the locking nut 23 is tightened, the axial movement clearances of the upper and lower tapered bearings 24 strung on the shaft member 22 will be shortened, that is, the axial clearance is reduced; conversely, when the locking nut 23 is loosened, the axial movement clearances of the upper and lower tapered bearings 24 will be extended, that is, the axial clearance is increased. When the measured clearance value does not meet the clearance requirement, the locking nut 23 can be adjusted to change the clearance value, and the above steps can be repeated for measurement, generally three times, until the value meets the standard. Generally, the axial clearance requirement of the tapered box body is controlled within the range of 0.06 mm to 0.1 mm.

[0054] As Figure 1 and Figure 2 shown, the adjustment tooling further includes: a second adjusting component for adjusting the distance of the first pressure-applying component or the second pressure-applying component relative to the end face of the shaft member 22 according to the height of the shaft member 22; in this embodiment, only the distance of the first pressure-applying component relative to the end face of the shaft member 22 is adjusted. The second adjusting component includes: two screw rods 13 oppositely arranged at the upper end of the top plate 3; a jack fixing cross beam 14 connected to the first hydraulic jack 15, and two through holes slidably matched with the screw rods 13 are provided on the jack fixing cross beam 14 so that the jack fixing cross beam 14 can move up and down along the screw rods 13; a height adjusting block 16 provided on the screw rod 13; a third nut 17 threadedly engaged with one end of the screw rod 13;

[0055] The above technical solution can adjust the height of the first pressure-applying component, that is, the first hydraulic jack 15, to adapt to applying pressure to shaft members 22 of different heights. The operation method is: by sleeving a height adjusting block 16 on the screw rod 13, the height of the jack fixing cross beam 14 can be increased, thereby increasing the height of the output end of the first hydraulic jack 15. After the height is adjusted, the third nut 17 is required to fix the screw rod 13, and the third nut 17 needs to press the height adjusting block 16 to ensure that when the first hydraulic jack 15 applies pressure to the shaft member 22, the first hydraulic jack 15 will not move up due to the reaction force, thereby realizing the adjustment of the height of the first hydraulic jack 15. As a possible situation, the second hydraulic jack 18 can also be provided with a height adjustment structure to adjust the distance between the output end of the second hydraulic jack 18 and the end face of the shaft member 22.

[0056] Working principle: When in use, first, according to the diameter of the box body 21, the two connecting rods 5 are moved to adjust the spacing between the two connecting rods 5. When the connecting rod 5 is moved, the first bolt 8 will be driven to slide in a circular manner along the annular positioning hole 7. When the first bolt 8 slides along the annular positioning hole 7, it will also slide linearly along the strip positioning hole 6, so that the strip positioning hole 6 is aligned with the third positioning hole 10. Then, the first bolt 8 and the second bolt 11 are used to fix the connecting rod 5 to the top plate 3 and the box body 21. Next, the first hydraulic jack 15 is adjusted according to the height of the shaft 22. By sleeved with a height adjustment block 16 on the screw rod 13, the height of the jack fixing beam 14 can be increased, thereby increasing the height of the output end of the first hydraulic jack 15. After the height is adjusted, the screw rod 13 needs to be fixed with the third nut 17. The third nut 17 needs to press the height adjustment block 16 to ensure that when the first hydraulic jack 15 applies pressure to the shaft 22, the first hydraulic jack 15 will not move up due to the reaction force.

[0057] Then, pressure is applied to the top and bottom ends of the shaft 22, respectively. Figure 5 When it is necessary to apply downward pressure to the top of the shaft 22, the first hydraulic jack 15 is operated to move its output end downward. The output end of the first hydraulic jack 15 presses the shaft 22 downward. Since the housing 21 is fixed by the positioning assembly and cannot move, only the tapered bearing 24 moves downward relative to the housing 21, thereby generating an axial gap. Figure 6 As shown, when it is necessary to apply upward pressure to the bottom end of the shaft 22, the second hydraulic jack 18 is operated to move its output shaft upward. The output shaft of the second hydraulic jack 18 lifts the shaft 22 upward. Since the housing 21 is fixed by the positioning assembly and cannot move, only the tapered bearing 24 moves upward relative to the housing 21, thereby generating an axial clearance. The axial clearance is measured by the dial indicator 20, and the axial clearance is fine-tuned and corrected by turning the locking nut 23.

[0058] Thereby completing a series of tasks, the contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field.

[0059] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

Claims

1. A tool for adjusting the axial clearance of the conical shaft system of a gearbox, comprising: A frame and a positioning component provided on the surface of the frame for limiting the position of the box body (21); A detection component provided on the surface of the frame for measuring the axial clearance of the tapered roller bearings (24) in the conical box body; A pressing component for applying an axial pressure to the shaft member (22) in the conical box body so as to generate an axial clearance between the upper and lower tapered roller bearings (24) connected to the shaft member (22); Characterized in that the pressing component respectively includes: a first pressing member for pressing downward from the top end of the shaft member (22) and a second pressing member for pressing upward from the bottom end of the shaft member (22); The adjustment tool further includes: A first adjusting component for adjusting the positioning space of the positioning component according to the length and width of the box body (21); A second adjusting component for adjusting the distance between the first pressing member or the second pressing member and the end face of the shaft member (22) according to the height of the shaft member (22).

2. The axial clearance adjustment tooling for the bevel shaft system of the gearbox according to claim 1, wherein The frame includes a bottom plate (1) and columns (2) arranged along the four sides of the bottom plate (1) and extending upward. The top ends of the columns (2) are provided with a top plate (3), and a through groove (4) for the box body (21) to pass through is opened on the surface of the top plate (3).

3. The axial clearance adjustment tooling for the bevel shaft system of the gearbox according to claim 2, characterized in that, The positioning component includes at least two positioning parts arranged opposite to the conical box body, and the positioning part includes: A connecting rod (5) through which a first positioning hole is opened; A second positioning hole opened on the upper surface of the top plate (3); A first bolt (8) with one end passing through the first positioning hole and the second positioning hole; A first nut (9) matched with the threaded end of the first bolt (8); A second bolt (11) with one end passing through the first positioning hole and a third positioning hole (10) opened on the box body (21); A second nut (12) matched with the threaded end of the second bolt (11), and the first bolt (8) and the second bolt (11) are combined with each other to form at least three fixings on each connecting rod (5).

4. The axial clearance adjustment tooling for the bevel shaft system of the gearbox according to claim 3, characterized in that, Each connecting rod (5) is provided with two first bolts (8) and one second bolt (11).

5. The axial clearance adjustment tooling for the bevel shaft system of the gearbox according to claim 3 or 4, characterized in that The first adjusting component includes: A strip-shaped positioning hole (6) formed by combining a plurality of the first positioning holes along the length direction of the connecting rod (5); An annular positioning hole (7) formed by combining a plurality of the second positioning holes in a circular array about the center of the through groove (4). Pushing the connecting rod (5) can drive the first bolt (8) to slide circularly along the annular positioning hole (7) and move linearly along the strip-shaped positioning hole (6), so as to adjust the distance between the two connecting rods (5) according to the size of the box body (21).

6. The axial clearance adjustment tooling for the bevel shaft system of the gearbox according to claim 2, characterized in that, The detection component includes: A dial indicator fixing seat (19) arranged at the upper end of the top plate (3); A dial indicator (20) connected to the dial indicator fixing seat (19), and the measuring rod of the dial indicator (20) abuts against the outer end face of the locking nut (23).

7. The axial clearance adjustment tooling for the bevel shaft system of the gearbox according to claim 2, characterized in that The first pressing component includes: a first hydraulic jack (15) disposed at the upper end of the top plate (3), and the output end of the first hydraulic jack (15) is in contact with the top end of the shaft member (22); the second pressing component includes: a second hydraulic jack (18) disposed at the upper end of the bottom plate (1), and the output end of the second hydraulic jack (18) is in contact with the bottom end of the shaft member (22).

8. The axial clearance adjustment tooling for the bevel shaft system of the gearbox according to claim 7, characterized in that, The second adjusting component includes: Two screw rods (13) oppositely disposed at the upper end of the top plate (3); A jack fixing cross beam (14) connected to the first hydraulic jack (15), and two through holes slidably engaged with the screw rods (13) are formed in the jack fixing cross beam (14) so that the jack fixing cross beam (14) can move up and down along the screw rods (13); A height adjusting block (16) disposed on the screw rod (13); A third nut (17) threadedly engaged with one end of the screw rod (13).

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