Bolt pre-tightening installation device

Abstract

The utility model relates to a bolt pre-tightening mounting device. The bolt pre-tightening installation device comprises a fixing seat, a locking and fixing mechanism, a fixing piece and a driving piece, the locking and fixing mechanism is arranged on the fixing seat and used for locking and fixing a bolt to the fixing seat, the fixing piece is rotationally connected to the fixing seat with the axis of the bolt as the rotating axis, and the fixing piece is used for radially locking and fixing a nut installed on the bolt. The driving piece is in driving connection with the fixing base and the fixing piece and used for driving the fixing piece to drive the nut to rotate on the bolt. The bolt is locked and fixed on the fixed seat through the locking and fixing mechanism; the driving piece drives the fixing piece to drive the nut to rotate on the bolt, so that the nut can be pre-tightened; after pre-tightening is completed, the locking and fixing mechanism is separated from the bolt, and locking and fixing of the bolt by the locking and fixing mechanism are relieved; the bolt pre-tightening installation device can be taken away, the bolt pre-tightening installation device can be repeatedly used, the bolt pre-tightening installation efficiency is improved, and the bolt pre-tightening installation cost is reduced.

Description

Technical Field

[0001] The present application relates to the technical field of wind power generation equipment installation, and in particular to a bolt pre-tightening installation device. Background Art

[0002] In the design of wind turbines, there are a large number of structures that use bolt pairs for connection, such as the connection between large components in the hub and nacelle. When pre-tightening the bolt pair, the bolt head or nut needs to be fixed, and then the bolt head or nut needs to be pre-tightened with a wrench. Taking the main platform of the wind turbine as an example, due to the requirements of the nacelle layout and fatigue strength, the main platform has a compact layout and many ribs, resulting in a relatively small installation space for multiple bolts.

[0003] At present, the wind power industry generally uses the method of welding nuts or bolt blocks on the installation surface for bolt installation in a narrow space. Larger components are generally connected by multiple sets of bolt pairs. In this way, multiple blocks need to be welded, which affects the space occupied by the overall structure and may also affect the overall stress condition of the components. In addition, the anti-corrosion treatment at the blocks is difficult and easy to cause local corrosion. Alternatively, tooling is made according to specific dimensions and multiple people are used to cooperate in the installation. This method is costly and inefficient. Summary of the invention

[0004] Based on this, a bolt pre-tightening installation device is provided to reduce installation costs and improve installation efficiency.

[0005] The embodiment of the present application provides a bolt pre-tightening installation device, comprising:

[0006] Fixed seat;

[0007] A locking and fixing mechanism, which is arranged on the fixing seat and is used to lock and fix the bolt on the fixing seat;

[0008] A fixing member, the fixing member is rotatably connected to the fixing seat with the axis of the bolt as the rotation axis, and the fixing member is used to radially lock and fix the nut installed on the bolt;

[0009] A driving member drivingly connects the fixing seat and the fixing member, and is used to drive the fixing member to drive the nut to rotate on the bolt.

[0010] In one embodiment, the locking and fixing mechanism includes:

[0011] A first fixing hole, which is provided on the fixing seat and is used for inserting the bolt;

[0012] A locking piece, wherein the locking piece is threadedly connected to the fixing seat, and an end portion of the locking piece extends into the first fixing hole to be abutted and fixed with an outer wall of the bolt.

[0013] In one of the embodiments, a locking block is rotatably connected to the end of the locking member, and the locking block is slidably connected to the fixing seat along the radial direction of the bolt, and the locking block is used to abut and fix with the outer wall of the bolt.

[0014] In one embodiment, the fixing seat is provided with a locking groove on the inner wall of the first fixing hole, and the locking block is slidably connected in the locking groove.

[0015] In one of the embodiments, the locking and fixing mechanisms are provided in a plurality of groups and are evenly distributed on the fixing seat along the circumference of the bolt.

[0016] In one of the embodiments, the fixing piece is provided with a second fixing hole, the inner wall of the second fixing hole is in contact with the circumferential outer wall of the nut, and is used for the nut to be inserted into the fixing piece along the axial direction of the bolt.

[0017] In one embodiment, the driving member includes a worm, and the worm is rotatably connected to the fixed seat;

[0018] The fixing member is provided with a gear ring, and the gear ring is meshed with the worm.

[0019] In one of the embodiments, a rotating bearing is provided between the fixing member and the fixing seat.

[0020] In one embodiment, the fixing member comprises:

[0021] A driving part, wherein the gear ring is fixedly disposed on a circumferential outer wall of the driving part;

[0022] A rotating part, wherein the rotating part is fixedly connected to the driving part, and a circumferential outer wall of the rotating part is used to be connected to the rotating bearing.

[0023] In one embodiment, the driving part, the rotating part, and the ring gear are integrally formed.

[0024] When using the bolt pre-tightening installation device according to the embodiment of the present application, first pass the bolt through the first to-be-fixed part and the second to-be-fixed part, and then put the nut on the bolt; the bolt pre-tightening installation device moves as a whole to lock and fix the fixing part on the nut; the bolt is locked and fixed on the fixing seat through the locking and fixing mechanism; the driving member drives the fixing member to drive the nut to rotate on the bolt to a degree that can be pre-tightened; after the pre-tightening is completed, the locking and fixing mechanism is separated from the bolt to release the locking and fixing of the bolt by the locking and fixing mechanism; the bolt pre-tightening installation device can be removed, and the bolt pre-tightening installation device can be reused. Through the above-mentioned settings, the bolt pre-tightening installation device of the embodiment of the present application can improve the bolt pre-tightening installation efficiency and reduce the bolt pre-tightening installation cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] FIG1 is a schematic structural diagram of a bolt pre-tightening installation device according to an embodiment of the present application when in use.

[0026] FIG. 2 is a schematic structural diagram of a bolt pre-tightening installation device according to an embodiment of the present application.

[0027] Reference numerals:

[0028] 100. Bolt pre-tightening installation device;

[0029] 110, fixed seat; 111, locking slide;

[0030] 120, locking and fixing mechanism; 121, first fixing hole; 122, locking member; 123, locking block;

[0031] 130, fixing member; 131, second fixing hole; 132, gear ring; 133, driving part; 134, rotating part;

[0032] 140, driving member; 141, worm;

[0033] 150. Rotating bearing;

[0034] 200, bolt; 210, washer;

[0035] 300, nuts;

[0036] 400, a first part to be fixed;

[0037] 500, the second part to be fixed. DETAILED DESCRIPTION

[0038] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present application, so the present application is not limited by the specific embodiments disclosed below.

[0039] In the description of the present application, it should be understood that if the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. appear, the orientation or position relationship indicated by these terms is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present application 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 on the present application.

[0040] In addition, if the terms "first" or "second" appear, these terms are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of this application, if the term "plurality" appears, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0041] In this application, unless otherwise clearly specified and limited, if the terms "installed", "connected", "connected", "fixed" and the like appear, these terms should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated 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 elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0042] In the present application, unless otherwise clearly specified and limited, if there is a description that a first feature is "above" or "below" a second feature, etc., or similar descriptions appear, it may mean that the first and second features are in direct contact, or that 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.

[0043] It should be noted that if an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. If an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. If any, the terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in this application are for illustrative purposes only and do not represent the only implementation method.

[0044] Referring to Figures 1 and 2, at least one embodiment of the present application proposes a bolt pre-tightening installation device 100, which includes a fixing seat 110, a locking and fixing mechanism 120, a fixing member 130 and a driving member 140. The locking and fixing mechanism 120 is arranged on the fixing seat 110, and is used to lock and fix the bolt 200 on the fixing seat 110. The fixing member 130 is rotatably connected to the fixing seat 110 with the axis of the bolt 200 as the rotation axis. The fixing member 130 is used to radially lock and fix the nut 300 installed on the bolt 200. The driving member 140 drives the connection between the fixing seat 110 and the fixing member 130, and is used to drive the fixing member 130 to drive the nut 300 to rotate on the bolt 200.

[0045] When the bolt pre-tightening installation device 100 according to the embodiment of the present application is used, the bolt 200 is first passed through the first to-be-fixed part 400 and the second to-be-fixed part 500, and then the nut 300 is sleeved on the bolt 200; the bolt pre-tightening installation device 100 moves as a whole, and the fixing part 130 is locked and fixed on the nut 300; the bolt 200 is locked and fixed on the fixing seat 110 through the locking and fixing mechanism 120; the driving member 140 drives the fixing member 130 to drive the nut 300 to rotate on the bolt 200, so that it reaches a degree that can be pre-tightened; after the pre-tightening is completed, the locking and fixing mechanism 120 is separated from the bolt 200, and the locking and fixing of the bolt 200 by the locking and fixing mechanism 120 is released; the bolt pre-tightening installation device 100 can be taken away, and the bolt pre-tightening installation device 100 can be reused. Through the above-mentioned configuration, the bolt pre-tightening installation device 100 of the embodiment of the present application is suitable for the rapid installation and pre-tightening of wind power bolts 200 , which can improve the pre-tightening installation efficiency of the bolts 200 and reduce the pre-tightening installation cost of the bolts 200 .

[0046] In some embodiments, the locking and fixing mechanism 120 includes a first fixing hole 121 and a locking member 122. The first fixing hole 121 is provided in the fixing seat 110 for inserting the bolt 200. The locking member 122 is threadedly connected to the fixing seat 110, and the end of the locking member 122 extends into the first fixing hole 121 for abutting and fixing with the outer wall of the bolt 200. Specifically, the locking member 122 can be configured to lock the bolt 200.

[0047] By the above arrangement, the locking member 122 is rotated so that the end of the locking member 122 moves away from or close to the outer wall of the bolt 200 . When the end of the locking member 122 abuts against the outer wall of the bolt 200 , the locking member 122 is fixed in the first fixing hole 121 .

[0048] In some embodiments, the end of the locking member 122 is rotatably connected to a locking block 123, the locking block 123 is slidably connected to the fixing seat 110 along the radial direction of the bolt 200, and the locking block 123 is used to abut and fix with the outer wall of the bolt 200. By providing the locking block 123, the locking block 123 abuts with the outer wall of the bolt 200, thereby preventing the end of the locking member 122 from wearing the outer wall of the bolt 200 during the rotation process.

[0049] In some embodiments, the locking block 123 may be made of rubber material, which can increase the friction between the locking block 123 and the outer wall of the bolt 200 during fixation, making the fixation stable while reducing the abutment of the locking block 123 against the outer wall of the bolt 200.

[0050] In some embodiments, the fixing seat 110 is provided with a locking groove 111 on the inner wall of the first fixing hole 121, and the locking block 123 is slidably connected in the locking groove 111. When the locking member 122 rotates, the locking block 123 is pushed to slide in the radial direction of the bolt 200 in the locking groove 111, and the locking block 123 approaches the outer wall of the bolt 200 until the locking block 123 abuts against the outer wall of the bolt 200, thereby realizing the locking and fixing of the bolt 200 by the locking and fixing mechanism 120. When unlocking is required, the locking member 122 is rotated in the opposite direction, and the locking block 123 is pulled to slide in the radial direction of the bolt 200 in the locking groove 111, and the locking block 123 is away from the outer wall of the bolt 200, and the locking and fixing of the bolt 200 by the locking and fixing mechanism 120 is released, and the locking bolt 200 can be separated from the fixing seat 110.

[0051] In some embodiments, a plurality of locking and fixing mechanisms 120 are provided and are evenly distributed on the fixing seat 110 along the circumference of the bolt 200 .

[0052] Specifically, the diameter of the first fixing hole 121 is larger than the diameter of the bolt 200, so that after the bolt 200 is inserted into the first fixing hole 121, there is a certain gap between the outer wall of the bolt 200 and the inner wall of the first fixing hole 121, so as to prevent the first fixing hole 121 from affecting the straightness of the bolt 200. The locking and fixing mechanism 120 can be set to three groups, four groups or more groups. It is understandable that the position and number of the locking and fixing mechanism 120 are determined according to the size of the bolt 200 and the size of the installation space.

[0053] In some embodiments, the fixing member 130 is provided with a second fixing hole 131, and the inner wall of the second fixing hole 131 is fitted with the circumferential outer wall of the nut 300, so as to allow the nut 300 to be inserted into the fixing member 130 along the axial direction of the bolt 200. Specifically, when the nut 300 is configured as a hexagonal thread, the second fixing hole 131 is also correspondingly configured as a hole with a hexagonal cross-section, and the fixing member 130 can be sleeved on the nut 300 along the axial direction of the bolt 200, and the inner wall of the second fixing hole 131 is fitted with the circumferential outer wall of the nut 300, so that the fixing member 130 can transmit torque to the nut 300 through the second fixing hole 131, so as to rotate the nut 300 installed on the bolt 200, and realize the pre-tightening installation of the bolt 200.

[0054] In some embodiments, the driving member 140 includes a worm 141, which is rotatably connected to the fixing seat 110. The fixing member 130 is provided with a ring gear 132, which meshes with the worm 141. Specifically, the axial direction of the worm 141 is perpendicular to the axial direction of the screw, and the axial direction of the ring gear 132 is parallel to the axial direction of the screw. When the worm 141 rotates, it drives the ring gear 132 meshing therewith to rotate, thereby driving the fixing member 130 to rotate. The rotating worm 141 can be rotated by a wrench.

[0055] In some embodiments, the driving scheme of the driving member 140 may also adopt gears or other structure transmission, as long as it can drive the fixing member 130 to rotate.

[0056] In some embodiments, a rotating bearing 150 is disposed between the fixing member 130 and the fixing seat 110. Specifically, a hole for the fixing member 130 to be rotatably connected is provided on the fixing seat 110, and the rotating bearing 150 is also installed in the hole.

[0057] In some embodiments, the fixing member 130 includes a driving portion 133 and a rotating portion 134, a gear ring 132 is fixedly disposed on the circumferential outer wall of the driving portion 133, the rotating portion 134 is fixedly connected to the driving portion 133, and the circumferential outer wall of the rotating portion 134 is used to connect to the rotating bearing 150. The driving portion 133 and the rotating portion 134 are fixedly connected to form a step structure.

[0058] In some embodiments, the driving part 133, the rotating part 134, and the gear ring 132 are integrally formed to reduce the number of parts. It is understood that in some embodiments, the rotation between the gear ring 132 and the fixing seat 110 is transmitted by a composite copper sleeve.

[0059] The bolt pre-tightening installation device 100 provided in the embodiment of the present application, when in use, comprises the following steps:

[0060] 1. Insert the bolt 200, the washer 210 and the nut 300 into the connection holes of the first to-be-fixed member 400 and the second to-be-fixed member 500;

[0061] 2. Move the bolt pre-tightening installation device 100 as a whole so that the fixing member 130 is sleeved outside the nut 300;

[0062] 3. Use a wrench to rotate the locking member 122 in a positive direction. The locking member 122 pushes the locking block 123 forward through the thread in the fixing seat 110 until the thread structure outside the bolt 200 of the locking member 122 is completely locked;

[0063] 4. Use a wrench to rotate the worm 141, push the gear ring 132 to rotate, and tighten the nut 300 to a degree that can be pre-tightened;

[0064] 5. After pre-tightening is completed, use a wrench to reverse the locking member 122, and the locking member 122 pulls the locking block 123 backward through the thread in the fixing seat 110, so that the locking block 123 is disengaged from the bolt 200;

[0065] 6. Take out the bolt pre-tightening installation device 100 and perform the pre-tightening installation of the next set of bolts 200 pairs.

[0066] Usually, when installing some large components in a wind turbine, especially when assembling components in the main platform, two people cannot work together due to space limitations. Therefore, the embodiment of the present application proposes a bolt pre-tightening installation device 100 for quickly and conveniently installing 200 pairs of bolts. One operator can quickly and conveniently complete the installation of 200 pairs of bolts, making the pre-tightening installation of the bolt 200 connection pairs more convenient; solving the problem of pre-tightening installation of 200 pairs of bolts in a small space; reducing the number of construction workers and improving efficiency; and not affecting the main body of the wind turbine components.

[0067] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0068] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be construed as limiting the scope of the patent application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent application shall be subject to the attached claims.

Claims

1. A bolt pre-tightening installation device, characterized in that: include: A fixing seat (110); A locking and fixing mechanism (120), the locking and fixing mechanism (120) being arranged on the fixing seat (110) and being used for locking and fixing the bolt (200) on the fixing seat (110); a fixing member (130), the fixing member (130) being rotatably connected to the fixing seat (110) with the axis of the bolt (200) as the rotation axis, and the fixing member (130) being used for radially locking and fixing a nut (300) mounted on the bolt (200); A driving member (140), wherein the driving member (140) drives and connects the fixing seat (110) and the fixing member (130), and is used to drive the fixing member (130) to drive the nut (300) to rotate on the bolt (200).

2. The bolt pre-tightening installation device according to claim 1, characterized in that: The locking and fixing mechanism (120) comprises: a first fixing hole (121), the first fixing hole (121) being arranged on the fixing seat (110) and being used for inserting the bolt (200); A locking member (122), wherein the locking member (122) is threadedly connected to the fixing seat (110), and an end portion of the locking member (122) extends into the first fixing hole (121) to be abutted and fixed against an outer wall of the bolt (200).

3. The bolt pre-tightening installation device according to claim 2, characterized in that: The end of the locking member (122) is rotatably connected to a locking block (123), the locking block (123) is slidably connected to the fixing seat (110) along the radial direction of the bolt (200), and the locking block (123) is used to abut and fix with the outer wall of the bolt (200).

4. The bolt pre-tightening installation device according to claim 3, characterized in that: The fixing seat (110) is provided with a locking groove (111) on the inner wall of the first fixing hole (121), and the locking block (123) is slidably connected in the locking groove (111).

5. The bolt pre-tightening installation device according to claim 2, characterized in that: The locking and fixing mechanisms (120) are provided in a plurality of groups and are evenly distributed on the fixing seat (110) along the circumference of the bolt (200).

6. The bolt pre-tightening installation device according to claim 1, characterized in that: The fixing piece (130) is provided with a second fixing hole (131), the inner wall of the second fixing hole (131) is in contact with the circumferential outer wall of the nut (300), and is used for the nut (300) to be inserted into the fixing piece (130) along the axial direction of the bolt (200).

7. The bolt pre-tightening installation device according to claim 6, characterized in that: The driving member (140) comprises a worm (141), and the worm (141) is rotatably connected to the fixing seat (110); The fixing member (130) is provided with a gear ring (132), and the gear ring (132) is meshed with the worm (141).

8. The bolt pre-tightening installation device according to claim 7, characterized in that: A rotating bearing (150) is provided between the fixing member (130) and the fixing seat (110).

9. The bolt pre-tightening installation device according to claim 8, characterized in that: The fixing member (130) comprises: A driving portion (133), wherein the gear ring (132) is fixedly disposed on a circumferential outer wall of the driving portion (133); A rotating part (134), wherein the rotating part (134) is fixedly connected to the driving part (133), and a circumferential outer wall of the rotating part (134) is used to be connected to the rotating bearing (150).

10. The bolt pre-tightening installation device according to claim 9, characterized in that: The driving part (133), the rotating part (134), and the ring gear (132) are integrally formed.

Images