Main shaft pressing device

Abstract

The utility model belongs to the technical field of wind power generation, and discloses a main shaft pressing device. The main shaft pressing device comprises a pressing block and a first abutting mechanism, wherein the pressing block is used for abutting against a main shaft; the first abutting mechanism comprises an abutting block and a first driving assembly, the abutting block is rotationally connected to the pressing block, and the first driving assembly is arranged on the pressing block; when the pressing block abuts against the main shaft in the first direction, the first driving assembly can drive the abutting block to rotate and abut against the rack in the direction opposite to the first direction. The main shaft pressing device is of an integral structure, when the main shaft pressing device is used, the abutting block can abut against the rack only by driving the abutting block to rotate through the first driving assembly, the structure is simple, operation is convenient, and great convenience is brought to operators.

Description

TECHNICAL FIELD

[0001] The utility model relates to wind power generation technical field especially, relate to a main shaft compression device. BACKGROUND

[0002] The impeller of wind turbine generator unit is supported through the connection with the main shaft, the main shaft is connected to the gear box, and the gear box is fixedly connected to the rack in the tower, thereby keeping the stability of the whole system. When the gear box needs to be repaired due to failure, the gear box needs to be removed from the rack and hoisted to the ground for repair, but after the gear box is removed, the main shaft loses the fixing point, at this time, the main shaft is in an unstable state under the influence of the impeller, and is extremely easy to be damaged. In order to avoid the above-mentioned situation, when the gear box is repaired, the main shaft and the impeller are usually removed together and hoisted to the tower, which increases the hoisting workload and reduces the hoisting efficiency. SUMMARY

[0003] The utility model discloses a main shaft compression device, simple structure, convenient operation can effectively fixed to the main shaft.

[0004] In order to achieve this purpose, the utility model adopts the following technical scheme:

[0005] The utility model provides a main shaft compression device, comprising:

[0006] The pressing block is used for pressing the main shaft;

[0007] The first abutting mechanism comprises an abutting block and a first driving assembly, the abutting block is rotationally connected to the pressing block, and the first driving assembly is arranged on the pressing block;

[0008] When the pressing block is pressed on the main shaft along the first direction, the first driving assembly can drive the abutting block to rotate and press on the rack along the opposite direction of the first direction.

[0009] As preferably, the main shaft compression device further comprises a second abutting mechanism, the second abutting mechanism comprises a hook, and the hook is rotationally connected to the pressing block;

[0010] When the pressing block is pressed on the main shaft along the first direction, the hook can rotate and press on the rack along the opposite direction of the first direction, and the hook and the abutting block are respectively located on the two sides of the rack along the length direction.

[0011] As preferably, the second abutting mechanism further comprises a second driving assembly, the second driving assembly is arranged on the pressing block, and the second driving assembly can drive the hook to rotate relative to the pressing block.

[0012] As preferably, the second driving assembly comprises a second connecting screw and a second nut, the abutting hook is hinged to the pressing block, one end of the second connecting screw is connected to the abutting hook, the other end of the second connecting screw is threaded through the pressing block, and the part of the second connecting screw extending out of the pressing block is connected with the second nut, and the second nut abuts against the pressing block.

[0013] As preferably, the first abutting mechanism further comprises a connecting plate, the connecting plate is detachably connected to the pressing block, the abutting block is hinged to the connecting plate, and the first driving assembly can drive the abutting block to rotate relative to the connecting plate.

[0014] As preferably, the first driving assembly comprises a first connecting screw and a first nut, the abutting block is hinged to the connecting plate, one end of the first connecting screw is connected to the abutting block, the other end of the first connecting screw is threaded through the pressing block, and the part of the first connecting screw extending out of the pressing block is connected with the first nut, and the first nut abuts against the pressing block.

[0015] As preferably, the first abutting mechanism further comprises a first reversing block and a first locking nut, the first connecting screw is threaded through the abutting block, and the part of the first connecting screw extending out of the abutting block is connected with the first locking nut.

[0016] The first reversing block is clamped between the abutting block and the first locking nut, one side of the first reversing block abutting against the abutting block is an arc-shaped surface, and the other side of the first reversing block abutting against the first locking nut is a flat surface.

[0017] As preferably, the first connecting screw and the first nut are provided with a plurality of corresponding ones.

[0018] As preferably, the pressing block is provided with a circular-arc-shaped matching groove, and the groove bottom of the matching groove abuts against the main shaft.

[0019] As preferably, the groove bottom of the matching groove is detachably provided with a flexible pad plate.

[0020] The utility model discloses the beneficial effect lies in:

[0021] The main shaft pressing device provided by the utility model, including the pressing block and the first abutting mechanism, the first abutting mechanism includes the abutting block and the first drive assembly, the abutting block is rotatably connected to the pressing block, when the pressing block is pressed in the first direction to the main shaft, the first drive assembly can drive the abutting block to rotate and press in the opposite direction of the first direction to the rack, thereby locking the pressing block in the first direction to the rack, and making the pressing block tightly press the main shaft in the first direction, preventing the main shaft from being warped or shaken on the end far from the impeller under the influence of the impeller, and realizing the purpose of keeping the main shaft stable, because the abutting block and the first drive assembly are both arranged on the pressing block, so the main shaft pressing device is of integral structure, without needing to arrange a separate pressing structure, and only needing to drive the abutting block to rotate through the first drive assembly when in use, so that the abutting block is pressed to the rack, which is simple in structure and convenient to operate, greatly facilitating the operator. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 It is the assembly drawing of the main shaft pressing device provided by the utility model specific embodiment;

[0023] Figure 2 It is the structure schematic view of the main shaft pressing device provided by the utility model specific embodiment;

[0024] Figure 3 It is the explosion view of the second abutting mechanism provided by the utility model specific embodiment;

[0025] Figure 4 It is the explosion view of the first abutting mechanism provided by the utility model specific embodiment.

[0026] In the drawing:

[0027] 100-main shaft;

[0028] 200-rack;

[0029] 1-pressing block; 11-matching groove;

[0030] 2-first abutting mechanism; 21-abutting block; 22-connection plate; 23-first drive assembly; 231-first connecting screw rod; 232-first nut; 24-first reversing block; 25-first pin shaft; 26-first locking nut;

[0031] 3-second abutting mechanism; 31-hook; 32-second drive assembly; 321-second connecting screw rod; 322-second nut; 33-second reversing block; 34-second pin shaft; 35-second locking nut. PREFERRED EMBODIMENT

[0032] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are intended only to illustrate the present invention and are not intended to limit the present invention. It should also be noted that, for ease of description, the accompanying drawings only illustrate portions relevant to the present invention, not all of its components.

[0033] In the description of this utility model, unless otherwise specified or limited, the terms "connected," "connect," and "fixed" should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0034] In the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Moreover, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0035] In the description of this embodiment, terms such as "upper," "lower," "right," and "left" are used to refer to positions or locations based on the positions or locations shown in the accompanying drawings. These terms are intended solely to facilitate description and simplify operation, and are not intended to indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this invention. Furthermore, the terms "first" and "second" are used solely for descriptive purposes and have no special meaning.

[0036] like Figure 1 and Figure 2 As shown, the utility model provides a spindle clamping device, which includes a pressure block 1 and a first abutment mechanism 2. The pressure block 1 is used to press the spindle 100. The first abutment mechanism 2 includes an abutment block 21 and a first drive assembly 23. The abutment block 21 is rotatably connected to the pressure block 1, and the first drive assembly 23 is arranged on the pressure block 1; when the pressure block 1 presses against the spindle 100 along a first direction, the first drive assembly 23 can drive the abutment block 21 to rotate and press against the frame 200 in the opposite direction of the first direction.

[0037] When the pressing block 1 is pressed against the main shaft 100 in the first direction, the first driving assembly 23 can drive the abutting block 21 to rotate and press against the rack 200 in the opposite direction of the first direction, so as to lock the pressing block 1 on the rack 200 in the first direction, and enable the pressing block 1 to tightly press the main shaft 100 in the first direction, prevent the main shaft 100 from being warped or shaken on the end thereof away from the impeller under the influence of the impeller, and achieve the purpose of keeping the main shaft 100 stable. Since the abutting block 21 and the first driving assembly 23 are both arranged on the pressing block 1, the main shaft pressing device is of an integral structure, and a separate pressing structure is not required, and when in use, the abutting block 21 can be pressed against the rack 200 only by driving the abutting block 21 to rotate by the first driving assembly 23, so that the main shaft pressing device is simple in structure and convenient to operate, and greatly facilitates the operator.

[0038] In the embodiment, the first direction is a direction vertically downward along the radial direction of the main shaft 100. It can be understood that the pressing block 1 is arranged across the main shaft 100 and pressed against the main shaft 100, the main shaft 100 is provided with the racks 200 on both sides thereof along the length direction, and the pressing block 1 is provided with at least two first abutting mechanisms 2. When the pressing block 1 is pressed against the main shaft 100, at least one abutting block 21 is pressed against each of the racks 200 on both sides of the main shaft 100, so as to ensure the stability of the pressing block 1 pressed against the main shaft 100.

[0039] In order to improve the connection strength between the pressing block 1 and the rack 200 and further improve the stability of the main shaft 100, as shown in Figure 1 and Figure 2 The main shaft pressing device further comprises a second abutting mechanism 3, the second abutting mechanism 3 comprises an abutting hook 31, and the abutting hook 31 is rotationally connected to the pressing block 1. When the pressing block 1 is pressed against the main shaft 100 in the first direction, the abutting hook 31 can rotate and press against the rack 200 in the opposite direction of the first direction, and the abutting hook 31 and the abutting block 21 are respectively located on both sides of the rack 200 along the length direction, that is, the abutting block 21 and the abutting hook 31 press against the opposite sides of the same rack 200, and the cooperation of the two greatly improves the fastening degree of the pressing block 1 and the rack 200. It can be understood that the second abutting mechanism 3 is provided with at least two, and when the pressing block 1 is pressed against the main shaft 100, at least one abutting hook 31 is pressed against each of the racks 200 on both sides of the main shaft 100.

[0040] Specifically, as shown in Figure 2As shown, the second abutting mechanism 3 further comprises a second driving assembly 32, which is arranged on the pressing block 1 and connected with the abutting hook 31, and the second driving assembly 32 can drive the abutting hook 31 to rotate relative to the pressing block 1; in the embodiment, when the pressing block 1 is abutted on the main shaft 100 along the first direction, and the abutting block 21 is abutted on the rack 200 along the opposite direction of the first direction under the driving of the first driving assembly 23, the operator can drive the abutting hook 31 to abut on the rack 200 along the opposite direction of the first direction by the second driving assembly 32.

[0041] The structure of the second driving assembly 32 can be set according to actual needs, as long as the abutting hook 31 can be abutted on the rack 200 along the opposite direction of the first direction. Exemplarily, as shown in Figure 2 and Figure 3 The second driving assembly 32 comprises a second connecting screw 321 and a second nut 322, the abutting hook 31 is hinged to the pressing block 1, one end of the second connecting screw 321 is connected to the abutting hook 31, the other end of the second connecting screw 321 is arranged through the pressing block 1, and the part of the second connecting screw 321 extending out of the pressing block 1 is connected with the second nut 322, and the second nut 322 is abutted on the pressing block 1.

[0042] The abutting hook 31 is in a circular arc structure, has a connecting end and an abutting end, and the position close to the connecting end of the abutting hook 31 is rotatably connected to the pressing block 1 through a second pin shaft 34, so that the abutting hook 31 forms a lever structure through the second pin shaft 34; the second connecting screw 321 is arranged through the pressing block 1 and the connecting end of the abutting hook 31 along the first direction in sequence, and the part of the second connecting screw 321 extending out of the connecting end is connected with a second locking nut 35, so as to realize the connection between the second connecting screw 321 and the abutting hook 31; since the other end of the second connecting screw 321 extends out of the pressing block 1 and is connected with the second nut 322, when the operator tightens the second nut 322, the second connecting screw 321 can move along the opposite direction of the first direction, so as to drive the connecting end of the abutting hook 31 to move upward through the second locking nut 35, and since the abutting hook 31 is a lever structure rotating around the second pin shaft 34, the abutting end of the abutting hook 31 is driven to move upward, and then abut on the rack 200.

[0043] In order to ensure the stability of the connection between the second connecting screw 321 and the abutting hook 31, and ensure the stability and smoothness of the process of driving the connecting end of the abutting hook 31 to move upward by the second connecting screw 321, as shown in Figure 3As shown, the second locking nut 35 and the connecting end of the abutting hook 31 are clamped with the second reversing block 33, one side of the second reversing block 33 facing the connecting end is an arc-shaped surface, one side of the second reversing block 33 facing the second locking nut 35 is a flat surface, the part of the second connecting screw 321 extending out of the connecting end is connected with the second locking nut 35 through the second reversing block 33, and the two sides of the second reversing block 33 are respectively attached to the connecting end and the second locking nut 35. It can be understood that, since the second connecting screw 321 will drive the connecting end of the abutting hook 31 to rotate around the second pin shaft 34 in the process of ascending in cooperation with the second nut 322, an inclined angle will be formed between the connecting end and the second locking nut 35, and the second reversing block 33 can well avoid the problem that the second locking nut 35 cannot be attached to the flat surface of the connecting end, thereby improving the connection stability of the second connecting screw 321 and the connecting end, and preventing the wear problem caused by the local abutment between the second locking nut 35 and the connecting end.

[0044] Further, as shown in Figure 1 and Figure 2 , the first abutting mechanism 2 further comprises a connecting plate 22, the connecting plate 22 is detachably connected to the pressing block 1, the abutting block 21 is hinged to the connecting plate 22, and the first driving assembly 23 can drive the abutting block 21 to rotate relative to the connecting plate 22; the shape of the connecting plate 22 includes but is not limited to a circular shape, a triangular shape, a rectangular shape and the like, which can be replaced according to the position of the rack 200 relative to the main shaft 100 and the structure of the rack 200; specifically, the connecting plate 22 is connected to the pressing block 1 through bolts, and the abutting block 21 is rotationally connected to the connecting plate 22 through the first pin shaft 25, thereby forming a lever structure capable of rotating around the first pin shaft 25.

[0045] The structure of the first driving assembly 23 can be set according to actual needs, as long as it can drive the abutting block 21 to rotate and abut against the rack 200 in the opposite direction of the first direction. Exemplarily, as shown in Figure 2 and Figure 4As shown, the first driving assembly 23 comprises a first connecting screw 231 and a first nut 232, the abutting block 21 is hinged to the connecting plate 22, one end of the first connecting screw 231 is connected to the abutting block 21, the other end of the first connecting screw 231 is threaded through the pressing block 1, and the part of the first connecting screw 231 extending out of the pressing block 1 is connected with the first nut 232, and the first nut 232 abuts against the pressing block 1; wherein the first connecting screw 231 is threaded through the pressing block 1 and the abutting block 21 in the first direction in turn, and the part of the first connecting screw 231 extending out of the abutting block 21 is provided with a first locking nut 26, so as to realize the connection between the first connecting screw 231 and the abutting block 21; since the other end of the first connecting screw 231 extends out of the pressing block 1 and is connected with the first nut 232, when the operator tightens the first nut 232, the first connecting screw 231 can move in the opposite direction of the first direction, so as to drive the abutting block 21 to rotate around the first pin shaft 25 and abut against the rack 200 through the first locking nut 26.

[0046] In order to ensure the stability of the connection between the first connecting screw 231 and the abutting block 21, and ensure the stability and smoothness of the process of the first connecting screw 231 driving the abutting block 21 to move upwards, as shown in the drawings, Figure 4 As shown, the first locking nut 26 and the abutting block 21 are clamped with a first reversing block 24, one side of the first reversing block 24 facing the abutting block 21 is an arc surface, the other side of the first reversing block 24 facing the first locking nut 26 is a plane, the part of the first connecting screw 231 extending out of the abutting block 21 is threaded through the first reversing block 24 and connected with the first locking nut 26, and the two sides of the first reversing block 24 abut against the abutting block 21 and the first locking nut 26 respectively; it can be understood that since the first connecting screw 231 will drive the abutting block 21 to rotate around the first pin shaft 25 in the process of ascending in thread cooperation with the first nut 232, an inclined angle is formed between the abutting block 21 and the first locking nut 26, and the first reversing block 24 can well avoid the problem that the first locking nut 26 cannot abut against the plane of the abutting block 21, improve the connection stability of the first connecting screw 321 and the abutting block 21, and also prevent the wear problem caused by local abutment between the first locking nut 26 and the abutting block 21.

[0047] As shown in the drawings, Figure 2 In order to improve the stability of the abutting block 21 and the hook 31 abutting against the rack 200 respectively, a plurality of first connecting screws 231 and first nuts 232 are provided one by one, and a plurality of second connecting screws 321 and second nuts 322 are also provided one by one.

[0048] Further, as shown in the drawings, Figure 2As shown, the pressing block 1 is provided with a circular-arc-shaped matching groove 11, the groove bottom of the matching groove 11 abuts against the main shaft 100, the shape of the matching groove 11 is matched with the main shaft 100, thereby increasing the contact area of the pressing block 1 and the main shaft 100, and further improving the stability of the pressing block 1 abutting against the main shaft 100.

[0049] Specifically, the groove bottom of the matching groove 11 is detachably provided with a flexible pad plate, the flexible pad plate can be made of rubber or flexible nylon; the flexible pad plate is connected to the groove bottom of the matching groove 11 through bolts, and different specifications of the flexible pad plate can be replaced according to the diameter of the main shaft 100.

[0050] Further, in order to improve the structural strength of the pressing block 1, the pressing block 1 is provided with a reinforcing rib.

[0051] The use steps of the main shaft pressing device provided by the embodiment are as follows:

[0052] Firstly, the pressing block 1 is moved together with the first abutting mechanism 2 and the second abutting mechanism 3 to above the main shaft 100 to be fixed, then the operator operates the abutting block 21 and the hook 31 to avoid the rack 200 below, and simultaneously lowers the pressing block 1 along the first direction, so that the main shaft 100 is clamped into the matching groove 11 of the pressing block 1.

[0053] Then the operator sequentially tightens the plurality of first nuts 232, so that the first connecting screw 231 moves in the opposite direction of the first direction, and drives the abutting block 21 to rotate around the first pin shaft 25 through the first locking nut 26, so that the abutting block 21 abuts against the rack 200 in the opposite direction of the first direction; then the operator sequentially tightens the second nuts 322, so that the second connecting screw 321 moves in the opposite direction of the first direction, and drives the hook 31 to rotate around the second pin shaft 34 through the second locking nut 35, so that the hook 31 abuts against the rack 200 in the opposite direction of the first direction.

[0054] After the main shaft pressing device is installed according to the above steps, the gear box is removed.

[0055] Obviously, the above embodiments of the utility model are only examples for clearly explaining the utility model, and are not the limitation of the embodiments of the utility model. For ordinary skilled in the art, various obvious changes, re-adjustment and replacement can be carried out without departing from the protection scope of the utility model. Here, it is unnecessary and impossible to exhaust all the embodiments. Any modification, equivalent replacement and improvement made within the spirit and principle of the utility model should be included in the protection scope of the utility model claim.

Claims

1. Spindle hold-down device, characterized in that The main shaft pressing device comprises a pressing block (1) for pressing against a main shaft (100), a first abutting mechanism (2) comprising an abutting block (21) and a first driving assembly (23), the abutting block (21) being rotationally connected to the pressing block (1), and the first driving assembly (23) being arranged on the pressing block (1). The pressing block (1) can press against the main shaft (100) in a first direction, and the first driving assembly (23) can drive the abutting block (21) to rotate and press against a rack (200) in a direction opposite to the first direction. The main shaft pressing device further comprises a second abutting mechanism (3) comprising a hook (31) rotationally connected to the pressing block (1). When the pressing block (1) presses against the main shaft (100) in the first direction, the hook (31) can rotate and press against the rack (200) in a direction opposite to the first direction, and the hook (31) and the abutting block (21) are located on opposite sides of the rack (200), respectively.

2. The spindle hold-down apparatus of claim 1, wherein, The second abutting mechanism (3) further comprises a second driving assembly (32) arranged on the pressing block (1), and the second driving assembly (32) can drive the hook (31) to rotate relative to the pressing block (1). The second driving assembly (32) comprises a second connecting screw (321) and a second nut (322), the hook (31) is hinged to the pressing block (1) to form a lever structure, one end of the second connecting screw (321) is connected to the hook (31), the other end of the second connecting screw (321) penetrates through the pressing block (1), and the part of the second connecting screw (321) protruding out of the pressing block (1) is connected with the second nut (322), and the second nut (322) abuts against the pressing block (1).

3. The spindle hold-down apparatus of claim 2, wherein, The first abutting mechanism (2) further comprises a connecting plate (22) detachably connected to the pressing block (1), the abutting block (21) is hinged to the connecting plate (22), and the first driving assembly (23) can drive the abutting block (21) to rotate relative to the connecting plate (22).

4. The spindle hold-down apparatus of claim 3, wherein, The first driving assembly (23) comprises a first connecting screw (231) and a first nut (232), one end of the first connecting screw (231) is connected to the abutting block (21), the other end of the first connecting screw (231) penetrates through the pressing block (1), and the part of the first connecting screw (231) protruding out of the pressing block (1) is connected with the first nut (232), and the first nut (232) abuts against the pressing block (1).

5. The spindle hold down apparatus of claim 1 wherein, The first abutting mechanism (2) further comprises a first reversing block (24) and a first locking nut (26), the first connecting screw (231) penetrates through the abutting block (21), and the part of the first connecting screw (231) protruding out of the abutting block (21) is connected with the first locking nut (26).

6. The spindle hold-down apparatus of claim 5, wherein, The first abutting mechanism (2) further comprises a first reversing block (24) and a first locking nut (26), the first connecting screw (231) penetrates through the abutting block (21), and the part of the first connecting screw (231) protruding out of the abutting block (21) is connected with the first locking nut (26).

7. The spindle hold-down apparatus of claim 6, wherein, ​ The first reversing block (24) is sandwiched between the abutting block (21) and the first locking nut (26); the surface of the first reversing block (24) abutting against the abutting block (21) is an arcuate surface, and the surface of the first reversing block (24) abutting against the first locking nut (26) is a flat surface.

8. The spindle hold-down apparatus of claim 6, wherein, A plurality of the first connecting screws (231) and the first nuts (232) are provided in a one-to-one correspondence.

9. The spindle hold down apparatus of claim 1 wherein, The pressing block (1) is provided with an arc-shaped matching groove (11), and the bottom of the matching groove (11) is pressed against the main shaft (100).

10. The spindle hold-down apparatus of claim 9, wherein, The bottom of the matching groove (11) is detachably provided with a flexible pad.

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