Supporting shaft centering and positioning device

Abstract

The utility model relates to the technical field of gear boxes, in particular to a centering and positioning device for a supporting shaft. The centering device comprises a first base, a second base, two first laser generators and a second laser generator. Wherein the second base is connected with the first base and is perpendicular to the first base, and the two first laser generators correspond to the edge of a shaft hole needing to be centered. During use, the second laser generator is arranged at the circle center of the end face of the supporting shaft needing to be centered, and the two first laser generators form two first positioning light spots at the edge of the shaft hole. And in the process that the supporting shaft is aligned with the shaft hole, the laser of the second laser generator irradiates the first base to form a second positioning light spot. If the second light spot is located in the center of the connecting line of the two first laser generators, the second light spot and the two first laser generators are in three-point and one-line mode at the moment, the supporting shaft and the shaft hole are in the centering state, the centering precision is improved, and an operator can easily recognize the supporting shaft and the shaft hole conveniently.

Description

Technical Field

[0001] The utility model relates to the technical field of gear boxes, in particular to a support shaft centering and positioning device. Background Art

[0002] In the integrated assembly of the wind turbine gearbox, the elastic support shaft fixes the box body to the nacelle through the bearing and the elastic support seat. The elastic support shaft and the box body shaft hole are interference fit, and the exposed length of the shaft neck on both sides of the box body is the same.

[0003] At present, the commonly used assembly methods for support shafts are drying or hot and cold assembly. During the assembly process, after visually aligning the shaft hole, the shaft is installed into the shaft hole of the box and the exposed length of the shaft neck is confirmed with a tape measure. The main disadvantages of this alignment method are that, firstly, visually aligning the shaft hole relies on the operator's vision and experience, and the operation accuracy is low. If the support shaft is assembled crookedly and the shaft is stuck, it can only be repeatedly adjusted by visual inspection, and the support shaft alignment efficiency is low; secondly, due to the low measurement accuracy of the tape measure when in use, it is necessary to fine-tune the axis alignment and the exposed length of the shaft neck many times, and the assembly efficiency of the support shaft is low. Utility Model Content

[0004] In view of the above-mentioned defects, the technical problem to be solved by the present invention is to provide a support shaft centering and positioning device, which can improve the centering accuracy of the support shaft during assembly and reduce the experience requirements for the operator.

[0005] The above technical objectives of the utility model are achieved through the following technical solutions:

[0006] A support shaft centering and positioning device, comprising:

[0007] First Pedestal;

[0008] A second base, the second base is connected to the first base and is perpendicular to each other;

[0009] Two first laser generators, both of which are arranged on the first base, both of which correspond to the edges of the shaft hole to be aligned, both of which have laser beams falling on the same diameter line of the shaft hole, and both of which are parallel to each other;

[0010] The second laser generator is used to be arranged at the center of the shaft end face that needs to be aligned, and the laser emitting end of the second laser generator faces the first base.

[0011] By adopting the above scheme, when in use, the second laser generator is arranged at the center of the support shaft that needs to be centered, and the end of the second base away from the first base is pressed against the end face of the shaft hole on the gear box. Two first laser generators are used to irradiate the edge of the shaft hole of the gear box to form two first positioning light spots, and the two first positioning light spots are located on a diameter line of the shaft hole. The laser beam of the second laser generator is parallel to the laser beams of the two first laser generators. In the process of centering the shaft hole of the support shaft, the laser of the second laser generator is irradiated on the first base to form a second positioning light spot. Observe whether the second positioning light spot is located at the center of the line connecting the two first laser generators. If the second light spot is located at the center of the line connecting the two first laser generators, the second light spot and the two first laser generators are in a straight line, indicating that the support shaft and the shaft hole are in a centered state. In addition, if the second positioning light spot deviates from the center of the line connecting the two first laser generators, the offset angle of the support shaft is adjusted according to the offset distance of the second positioning light spot, and the alignment of the support shaft and the shaft hole is completed after adjustment. During the alignment process, the support shaft can be corrected at any time by observing the position of the second light spot on the first base. Since the first positioning light spot and the second light spot are relatively eye-catching, the operator can easily identify whether the support shaft is aligned, and since the alignment standard is clear and definite, the operator can clearly judge whether the support shaft is aligned. The operator's experience requirement is relatively low, and the operation is simple and convenient.

[0012] The utility model is further configured such that the first laser generator is connected to the first base via a connecting member, the first laser generator is fixedly connected to the connecting member, and the connecting member is slidably connected to the first base. Since the first laser generator can slide on the first base, the first laser can be adapted to shaft holes of different apertures on the gearbox.

[0013] The utility model is further configured that the connecting piece is C-shaped and sleeved on the first base. Since the connecting piece is C-shaped, the connecting piece can be sleeved on the first base stably and is convenient for sliding on the first base.

[0014] The utility model is further configured such that a clearance hole is formed at the C-shaped disconnection of the connector, the clearance hole is located on the side of the first base close to the second base, a first mounting hole is provided on the side of the connector opposite to the clearance hole, the first laser generator is installed in the first mounting hole, and a clearance hole is provided on the first base for the laser of the first laser generator to pass through. Since the clearance hole of the connector is located on the side close to the second base, the laser of the first laser generator can pass through the clearance hole of the connector after passing through the clearance hole, thereby preventing the connector from blocking the laser of the first laser generator. And since the connector is C-shaped, the position of the first laser can be easily observed through the clearance hole, and the midpoint of the line connecting the two first lasers can be easily located.

[0015] The utility model is further configured such that a second mounting hole is provided on the connecting member, a first adjusting bolt is threadedly connected to the second mounting hole, and one end of the first adjusting bolt abuts against the first base. The connecting member can be positioned on the first base by the first adjusting bolt to prevent the connecting member from shifting during the centering of the support shaft, thereby preventing the centering accuracy of the support shaft from being affected.

[0016] The utility model is further configured such that a positioning seat is fixedly connected to one end of the second base away from the first base, and the positioning seat has a positioning surface at one end away from the second base, and the positioning surface is perpendicular to the laser beam of the first laser generator. The positioning surface of the positioning seat contacts the plane end surface of the gear box with the shaft hole, so that the first base and the second base can be positioned more conveniently.

[0017] The utility model is further configured that the positioning seat is a magnetic piece. Since the positioning seat is a magnetic piece, the positioning seat can be adsorbed on the end surface of the gear box, which is convenient for operators to use.

[0018] The utility model is further configured such that a positioning member is slidably connected to the second base, the sliding track of the positioning member is parallel to the laser beam of the first laser generator, and the positioning member is used to abut against the end face of the shaft that needs to be centered. Since it is necessary to control the length of the shaft neck of the support shaft exposed from the shaft hole, the length of the shaft neck of the support shaft exposed from the shaft hole can be positioned by the positioning member during use, which is convenient for operators to control.

[0019] The utility model is further configured that the positioning member is provided with a third mounting hole, the third mounting hole is internally threaded with a second adjusting bolt, one end of the second adjusting bolt abuts against the second base. The positioning member and the second base can be fixed together by the second adjusting bolt, thereby limiting the length of the journal of the support shaft exposed from the hole.

[0020] The utility model is further configured such that both the first base and the second base are scales provided with scale lines. The scales on the scales can make it easier for operators to identify whether the support shaft is centered and whether the support shaft is axially installed in place.

[0021] In summary, the support shaft centering and positioning device provided by the utility model has at least the following beneficial effects compared with the prior art:

[0022] 1. Laser positioning is more accurate, which reduces the vision requirements for operators and avoids operators from being highly concentrated for a long time, thereby reducing the labor intensity of operators and improving work efficiency.

[0023] 2. Avoid repeated adjustments due to the exposed length of the support shaft not meeting the requirements after installation, thereby improving production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any novel labor.

[0025] Figure 1 is a schematic diagram of the three-dimensional structure of the utility model at a first viewing angle (wherein the second laser generator is not shown);

[0026] Figure 2 It is a three-dimensional structural schematic diagram of the connecting piece in the utility model;

[0027] Figure 3 1 is a schematic diagram of the three-dimensional structure of the novel device in the second viewing angle (wherein the second laser generator is not shown);

[0028] Figure 4 1 is a schematic diagram of the structure of the utility model when the centering starts when the utility model is in use (wherein the dotted lines represent the laser beams of the first laser generator and the second laser generator);

[0029] Figure 5 It is a schematic diagram of the structure of the utility model when it is in use and installed (wherein the dotted lines represent the laser beams of the first laser generator and the second laser generator).

[0030] Figure numerals: 1. first base, 2. second base, 3. first laser generator, 4. second laser generator, 5. connecting piece, 6. avoidance opening, 7. first mounting hole, 8. avoidance hole, 9. first adjusting bolt, 10. positioning seat, 11. positioning surface, 12. positioning piece, 13. sliding hole, 14. second adjusting bolt, 15. gear box, 16. shaft hole, 17. support shaft. DETAILED DESCRIPTION

[0031] In order to make those skilled in the art better understand the technical solution of the utility model, the following Figure 1-5 The utility model is further described in detail with specific implementation methods.

[0032] See also Figure 1-5, a support shaft centering and positioning device provided in this embodiment includes a first base 1, a second base 2, two first laser generators 3 and a second laser generator 4 for being arranged at the center of the end face of the support shaft 17 to be centered. The second laser generator 4 can be connected to the support shaft 17 by magnetic adsorption or bonding, and the laser emitting end of the second laser generator 4 faces the first base 1. Among them, one end of the first base 1 is fixedly connected to the second base 2, the first base 1 and the second base 2 are both bar-shaped, the length direction of the first base 1 is perpendicular to the length direction of the second base 2, and the first base 1 and the second base 2 are arranged in an L shape. The first base 1 and the second base 2 are preferably scales with scale lines, and the distribution direction of the scale lines is the length direction of the first base 1 and the second base 2. The scale lines are used to identify the position of the laser beam of the second laser generator 4 and the first laser generator 3 on the first base 1, and to identify the position of the positioning member 12 in the length direction of the second base 2. The two first laser generators 3 are both arranged on the first base 1, and the two first laser generators 3 correspond to the edges of the shaft hole 16 that need to be centered. The laser beams of the two first laser generators 3 fall on the same diameter line of the shaft hole 16, and the two first laser generators 3 are distributed along the length direction of the first base 1. The preset spacing between the two first laser generators 3 corresponds to the aperture of the shaft hole 16 on the gear box 15 where the support shaft 17 needs to be assembled. Specifically, in the ideal case where the support shaft 17 is completely centered with the shaft hole 16, the laser beams emitted by the two first laser generators 3 can form a first positioning light spot at the edge of the shaft hole 16.

[0033] By adopting the above scheme, when in use, the second laser generator 4 is arranged at the center of the support shaft 17 to be centered, and the end of the second base 2 away from the first base 1 is pressed against the end face of the gear box 15 at the shaft hole 16. Keep the length direction of the first base 1 parallel to the end face of the support shaft 17, and irradiate the two first laser generators 3 on the edge of the shaft hole 16 of the gear box 15 to form two first positioning light spots, and the two first positioning light spots are located on the same diameter line of the shaft hole 16. In the process of the support shaft 17 centering the shaft hole 16, the laser of the second laser generator 4 irradiates on the first base 1 to form a second positioning light spot. Observe whether the second positioning light spot is located at the center of the line connecting the two first laser generators 3. If the second light spot is located at the center of the line connecting the two first laser generators 3, at this time, the second light spot and the two first laser generators 3 are in a straight line, indicating that the support shaft 17 and the shaft hole 16 are in a centered state. In addition, if the second positioning light spot deviates from the center of the line connecting the two first laser generators 3, the offset angle of the support shaft 17 is adjusted according to the offset distance of the second positioning light spot, and the alignment of the support shaft 17 and the shaft hole 16 is completed after adjustment. During the alignment process, the support shaft 17 can be corrected at any time by observing the position of the second light spot on the first base 1. Since the first positioning light spot and the second light spot are relatively eye-catching, the operator can easily identify whether the support shaft 17 is centered, and since the alignment standard is clear and definite, the operator can clearly judge whether the support shaft 17 is centered. The experience requirement for the operator is low, and the operation is simple and convenient.

[0034] Please continue reading Figure 1-2 In order to adapt to the shaft holes 16 of different diameters and the support shafts 17 of different diameters, the first laser generator 3 is further connected to the first base 1 through the connector 5, the first laser generator 3 is fixedly connected to the connector 5, the connector 5 is slidably connected to the first base 1, and the connector 5 can slide along the length direction of the first base 1. Specifically, the connector 5 is C-shaped, and the connector 5 is sleeved on the first base 1. The C-shaped disconnection of the connector 5 forms an escape port 6, and the escape port 6 is located on the side of the first base 1 close to the second base 2. The C-shaped disconnection of the connector 5 refers to the disconnection of the connector 5 in the circumferential direction. The escape port 6 is used to avoid blocking the laser of the first laser generator 3 on the one hand, and to avoid blocking the straight line between the two first laser generators 3 on the first base 1 on the other hand. A first mounting hole 7 is provided on the side of the connector 5 away from the escape port 6, and the first laser generator 3 is installed in the first mounting hole 7. The first base 1 is provided with an escape hole 8 for the laser of the first laser generator 3 to pass through. The avoidance hole 8 passes through the front and rear sides of the first base 1. The avoidance hole 8 is a strip-shaped hole, and its length direction is parallel to the length direction of the first base 1. The length of the avoidance hole 8 can be selected and set according to the required range of movement.

[0035] Please continue reading Figure 1-3In order to conveniently fix the first laser generator 3 and the first base 1 together, a second mounting hole is further provided on the connecting member 5, and a first adjusting bolt 9 is threadedly connected to the second mounting hole, and one end of the first adjusting bolt 9 is against the first base 1.

[0036] Please continue reading Figure 3 In order to facilitate positioning the second base 2 on the gear box 15, further, the second base 2 is fixedly connected to a positioning seat 10 at one end away from the first base 1, and the positioning seat 10 has a positioning surface 11 at one end away from the second base 2, and the positioning surface 11 is perpendicular to the laser beam of the first laser generator 3. In order to facilitate the installation of the positioning seat 10 on the gear box 15, the positioning seat 10 is preferably a magnetic member, specifically a magnet, for adsorbing to a corresponding position on the gear box 15.

[0037] See also Figure 1 and Figure 3 In order to facilitate the positioning of the support shaft 17 to determine whether it reaches the expected length extending out of the shaft hole 16, a positioning member 12 is further slidably connected to the second base 2. The positioning member 12 can slide along the length direction of the second base 2. The sliding track of the positioning member 12 is parallel to the laser beam of the first laser generator 3. The positioning member 12 is used to resist the end face of the support shaft 17 that needs to be centered. Specifically, the cross section of the second base 2 is polygonal, and the positioning member 12 is plate-shaped, with a sliding hole 13 in the middle. The sliding hole 13 of the positioning member 12 is sleeved on the second base 2, and the sliding hole 13 is slidably connected to the second base 2. The sliding hole 13 can allow the laser beam of the first laser generator 3 close to the second base 2 to pass through, so as to avoid the positioning member 12 blocking the laser beam, so as to ensure that the laser beam of the first laser generator 3 close to the second base 2 can be projected to the edge of the shaft hole 16 of the gear box 15.

[0038] In order to conveniently fix the positioning member 12 on the second base 2 , a third mounting hole is further opened on the upper side of the positioning member 12 , and a second adjusting bolt 14 is threadedly connected to the third mounting hole, and the lower end of the second adjusting bolt 14 abuts against the second base 2 .

[0039] It should be noted that the words indicating direction in this article, such as up and down, are all based on Figure 1 The setting of the direction is only for the convenience of description and has no other specific meaning.

[0040] It should also be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "comprises", "comprising" or any other variants thereof are intended to cover non-exclusive inclusion, so that an article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such article or device. In the absence of further restrictions, the elements defined by the sentence "comprising a ..." do not exclude the existence of other identical elements in the article or device including the above elements.

[0041] This article uses specific examples to illustrate the principles and implementation methods of the utility model. The above examples are only used to help understand the core idea of ​​the utility model. It should be pointed out that for ordinary technicians in this technical field, without departing from the principle of the utility model, the utility model can also be improved and modified, and these improvements and modifications also fall within the scope of protection of the claims of the utility model.

Claims

1. A support shaft centering and positioning device, characterized in that: include: A first base (1); A second base (2), the second base (2) is connected to the first base (1) and is perpendicular to each other; Two first laser generators (3), the two first laser generators (3) are both arranged on the first base (1), the two first laser generators (3) correspond to the edge of the shaft hole (16) to be aligned, the laser beams of the two first laser generators (3) fall on the same diameter line of the shaft hole (16), and the laser beams emitted by the two first laser generators (3) are parallel to each other; The second laser generator (4) is used to be arranged at the center of the shaft end face that needs to be centered, and the laser emitting end of the second laser generator (4) faces the first base (1).

2. A support shaft centering and positioning device as claimed in claim 1, characterized in that: The first laser generator (3) is connected to the first base (1) via a connecting piece (5); the first laser generator (3) is fixedly connected to the connecting piece (5); and the connecting piece (5) is slidably connected to the first base (1).

3. A support shaft centering and positioning device as claimed in claim 2, characterized in that: The connecting piece (5) is C-shaped and is sleeved on the first base (1).

4. A support shaft centering and positioning device as claimed in claim 3, characterized in that: The C-shaped disconnection of the connecting member (5) forms an escape opening (6), the escape opening (6) is located on a side of the first base (1) close to the second base (2), a first mounting hole (7) is provided on a side of the connecting member (5) opposite to the escape opening (6), the first laser generator (3) is installed in the first mounting hole (7), and an escape hole (8) is provided on the first base (1) for the laser of the first laser generator (3) to pass through.

5. A support shaft centering and positioning device as claimed in claim 4, characterized in that: The connecting member (5) is also provided with a second mounting hole, a first adjusting bolt (9) is threadedly connected to the second mounting hole, and one end of the first adjusting bolt (9) abuts against the first base (1).

6. A support shaft centering and positioning device as claimed in claim 1, characterized in that: One end of the second base (2) away from the first base (1) is fixedly connected to a positioning seat (10), and one end of the positioning seat (10) away from the second base (2) has a positioning surface (11), and the positioning surface (11) is perpendicular to the laser beam of the first laser generator (3).

7. A support shaft centering and positioning device as claimed in claim 6, characterized in that: The positioning seat (10) is a magnetic piece.

8. A support shaft centering and positioning device as claimed in claim 1, characterized in that: A positioning member (12) is slidably connected to the second base (2); a sliding track of the positioning member (12) is parallel to the laser beam of the first laser generator (3); and the positioning member (12) is used to abut against the end face of the shaft that needs to be aligned.

9. A support shaft centering and positioning device as claimed in claim 8, characterized in that: The positioning member (12) is provided with a third mounting hole, a second adjusting bolt (14) is threadedly connected to the third mounting hole, and one end of the second adjusting bolt (14) abuts against the second base (2).

10. A support shaft centering and positioning device as claimed in claim 8 or 9, characterized in that: The first base (1) and the second base (2) are both scales provided with scale lines.

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