Lifting appliance for bolt stretcher

Abstract

The utility model discloses a lifting appliance for a bolt stretcher, and belongs to the technical field of workpiece assembly, the lifting appliance for the bolt stretcher comprises a supporting piece, an extending piece and a lifting piece, the extending piece is connected with the supporting piece and can rotate along the circumference of the supporting piece, the lifting piece is installed on the extending piece, and the extending piece is connected with the lifting piece. The bolt tensioner is arranged on the supporting part and used for controlling the distance between the bolt tensioner and the extending part, the lifting part can be adjusted by different angles around the supporting part through rotation of the extending part and the supporting part, and therefore workers can rapidly adjust the position of the bolt tensioner according to the specific position of a bolt, manpower is reduced, and meanwhile the working efficiency is improved. And the operation safety of workers on the hub is improved, and the assembly efficiency of a unit is greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of workpiece assembly, and more particularly to a hanger for a bolt tensioner. Background Art

[0002] When assembling the transmission chain of a wind turbine generator set, the connections between the main shaft and the hub, and between the main shaft and the bearing seat are usually fixed with bolts. To ensure the stability of the connection and the safety of the equipment, a bolt tensioner is usually required to apply a certain tightening torque after the bolts are installed to meet the assembly requirements.

[0003] The bolt tensioner uses pure tensile force to directly lengthen the bolt without torsional shear force or lateral force, and causes no friction damage to the contact surface of the connection. It is the best way to accurately control the bolt preload.

[0004] However, with the development of larger wind turbines, the size of turbine components has become larger, and the number of bolts required for connection has also increased. Hundreds of bolts are needed to complete the assembly of the turbine main shaft and hub. Using a tensioner to complete the tensioning of hundreds of bolts requires workers to hold the tensioner and handle hundreds of bolts, which is a time-consuming and labor-intensive process. Since the bolts of large wind turbines are large in size, the size of the tensioner used also needs to match, resulting in a larger weight of the tensioner. It often requires multiple workers to operate alternately to complete the tensioning operation of all bolts, increasing labor costs.

[0005] In summary, how to provide a sling that is convenient for supporting a stretcher is a problem that needs to be urgently solved by those skilled in the art. Utility Model Content

[0006] In view of this, the purpose of the present invention is to provide a hanger for a bolt tensioner to support the tensioner, reduce the number of workers required, and improve work efficiency.

[0007] In order to achieve the above purpose, the present invention provides the following technical solutions:

[0008] A hanger for a bolt tensioner, comprising:

[0009] Support members;

[0010] an extension member connected to the support member and rotatable along the circumference of the support member;

[0011] A lifting member is installed on the extension member and is used to control the distance between the bolt tensioner and the extension member.

[0012] Furthermore, the support member is a rod-shaped structure, and a connecting portion is provided at the end of the support member away from the extension member;

[0013] A connecting groove is preset on the workpiece for connecting with the connecting portion.

[0014] Furthermore, the present invention provides that the connection portion and the connection groove are detachably connected by screwing a thread.

[0015] Furthermore, the present invention provides that the connection portion and the connection groove are detachably connected by interference fit.

[0016] Furthermore, the present invention provides that the connection portion and the connection groove are detachably connected by magnet adsorption.

[0017] Furthermore, the utility model provides that a support plate is installed at the end of the support member away from the extension member, and a plurality of running wheels are provided on a side of the support plate away from the support member.

[0018] The utility model further provides that the extension member includes a first section and a second section, one end of the first section is rotatably connected to the support member, the other end of the first section is equipped with a rotating shaft arranged parallel to the support member, one end of the second section is rotatably connected to the rotating shaft, and the lifting member is installed at the other end of the second section. The distance between the lifting member and the support member is adjusted by rotating the first section and the second section.

[0019] Furthermore, the utility model provides that the extension member includes a first section and a second section, and the first section and the second section are slidingly connected to each other, and the distance between the lifting member and the supporting member can be adjusted by adjusting the overlapping length of the first section and the second section.

[0020] Furthermore, in the present invention, the lifting member can be a manual hoist or an electric hoist.

[0021] The utility model further comprises a lifting member comprising a fixed pulley rotatably mounted on the end of the second section, a connecting rope being wound around the fixed pulley, one end of the connecting rope being connected to a bolt tensioner, and the other end of the connecting rope being connected to a counterweight.

[0022] The lifting device for a bolt tensioner provided by the present invention first assembles a support member, an extension member and a lifting member, that is, the extension member is rotatably connected to the support member and can rotate along the circumference of the support member, and the lifting member is installed with the extension member and is used to control the distance between the bolt tensioner and the extension member. That is to say, by rotating the extension member and the support member, the lifting member can be adjusted to different angles around the support member, which is beneficial for workers to quickly adjust the position of the bolt tensioner according to the specific position of the bolt, and the height of the bolt tensioner can be adjusted under the action of the lifting member, further improving the convenience when operating the bolts. By adjusting the state of the device, all bolts on the workpiece can be stretched, reducing manpower while increasing the safety of workers operating on the wheel hub, greatly improving the assembly efficiency of the unit, and no workers need to hold the bolt tensioner continuously, and the bolt stretching operation can be completed by one person, which greatly reduces the labor cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are merely embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying any creative work.

[0024] Figure 1 This is a schematic diagram of the structure of the device provided by the utility model when in use;

[0025] Figure 2 This is a schematic diagram of the structure of the device provided by the utility model when it is unfolded;

[0026] Figure 3 This is a schematic diagram of the structure of the device provided by the utility model when it is closed;

[0027] Figure 4 This is a schematic structural diagram of other embodiments provided by the present utility model;

[0028] Figures 1-4 , the reference numerals include:

[0029] 1. Support member; 101. Connecting part; 2. Extension member; 201. First section; 202. Rotating shaft; 203. Second section; 3. Lifting member. DETAILED DESCRIPTION

[0030] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0031] The core of the utility model is to provide a sling for a bolt tensioner to support the tensioner, thereby reducing the number of workers required and improving work efficiency.

[0032] Please refer to Figures 1-4 A sling for a bolt tensioner includes a support member 1, an extension member 2 and a lifting member 3. The extension member 2 is connected to the support member 1 and can rotate along the circumference of the support member 1. That is, the lifting member 3 can be adjusted to different angles around the support member 1 by rotating the extension member 2 and the support member 1. The lifting member 3 is installed with the extension member 2 and is used to control the distance between the bolt tensioner and the extension member 2. That is, the position of the lifting member 3 can also be adjusted synchronously by rotating the extension member 2 and the support member 1.

[0033] Optionally, in the embodiment of the present invention, the rotational connection between the support member 1 and the extension member 2 includes a bearing mounted on the support member 1, the bearing axis is parallel to the support member 1, and the support member 1 is connected to the inner ring of the bearing, and the extension member 2 is connected to the outer ring of the bearing, thereby achieving the rotational connection between the support member 1 and the extension member 2.

[0034] Optionally, the embodiment of the present utility model does not limit the specific structure of the lifting member 3.

[0035] In some embodiments, the lifting member 3 may be a hoist, such as a manual hoist, an electric hoist, or a servo suspension electric hoist.

[0036] When in use, first assemble the support member 1, the extension member 2 and the lifting member 3, that is, the extension member 2 is rotatably connected to the support member 1, and can rotate along the circumference of the support member 1, and the lifting member 3 is installed on the extension member 2, and is used to control the distance between the bolt tensioner and the extension member 2. That is to say, by rotating the extension member 2 and the support member 1, the lifting member 3 can be adjusted to different angles around the support member 1, which is beneficial for workers to quickly adjust the position of the bolt tensioner according to the specific position of the bolt, and the height of the bolt tensioner can be adjusted under the action of the lifting member 3, further improving the convenience when operating the bolts. By adjusting the state of the device, all bolts on the workpiece can be stretched, reducing manpower while increasing the safety of workers operating on the wheel hub, greatly improving the assembly efficiency of the unit, and there is no need for workers to hold the bolt tensioner continuously, and a single person can complete the stretching operation of the bolt, greatly reducing labor costs.

[0037] Please refer to Figure 4 In order to facilitate the rapid fixation of the device, in some embodiments, the support member 1 is a rod-shaped structure, and a connecting portion 101 is provided at the end of the support member 1 away from the extension member 2. The workpiece is preset with a connecting groove for connecting with the connecting portion 101 to achieve the fixation of the support member 1. That is to say, a connecting groove is first preset on the workpiece, and the support rod is inserted into the connecting groove to connect the device to the workpiece, so as to facilitate workers to operate the bolt tensioner, and at the same time facilitate the disassembly and transportation of the device for repeated use.

[0038] Optionally, in some embodiments, the connecting portion 101 and the connecting groove are detachably connected by screwing. Specifically, the connecting portion 101 is cylindrical and has threads on the outside, and the inner wall of the connecting groove is provided with threads that match the threads. The connecting portion 101 and the workpiece are fixed by the threads.

[0039] Optionally, in other embodiments, the connecting portion 101 and the connecting groove are detachably connected by interference fit. Specifically, the connecting portion 101 and the connecting groove adopt matching shapes, and the detachable connection between the device and the workpiece is achieved by plugging and pulling out the interference fit.

[0040] In addition, in this embodiment, in order to further improve the effect of interference fit, a rubber layer may be sleeved on the outside of the connecting portion 101, and a tight interference fit between the connecting portion 101 and the connecting groove is achieved through the elastic effect of the rubber layer.

[0041] Optionally, in other embodiments, the connecting part 101 and the connecting groove are detachably connected by magnetic adsorption. Specifically, a magnet is installed on the connecting part 101, or the connecting part 101 is made of magnetic material as a whole and inserted into the connecting groove, and an effective connection between the connecting part 101 and the workpiece is achieved under the action of the magnet.

[0042] Optionally, in order to facilitate the movement of the device, in other embodiments, a support plate is installed at the end of the support member 1 away from the extension member 2, and a plurality of running wheels are provided on the side of the support plate away from the support member 1. Specifically, a support plate is provided, and the support plate can be selected to a suitable size according to needs, and a counterweight block 301 is installed on the support plate. The device is kept stable by the counterweight block 301, and the device is conveniently moved by providing a plurality of running wheels on the side of the support plate away from the support member 1.

[0043] Please refer to Figure 2 and Figure 3 In some embodiments, the extension member 2 includes a first section 201 and a second section 203, one end of the first section 201 is rotatably connected to the support member 1, and the other end of the first section 201 is equipped with a rotating shaft 202 arranged parallel to the support member 1, one end of the second section 203 is connected to the rotating shaft 202, and the lifting member 3 is installed at the other end of the second section 203. The distance between the lifting member 3 and the support member 1 is adjusted by rotating the first section 201 and the second section 203. That is to say, by adopting a two-section extension member 2, under the action of the rotating connection between the first section 201 and the second section 203, all bolt stretching operations can be performed within the fully extended range of the first section 201 and the second section 203, and the structure is simple and practical, and the cost is lower.

[0044] It should be noted that, in the embodiment of the utility model, a rotating shaft 202 is provided at the end of the first section 201 and is covered with a bearing, the inner ring of the bearing is connected to the rotating shaft 202, and then the end of the second section 203 is connected to the outer ring of the bearing, thereby realizing the rotational connection between the first section 201 and the second section 203.

[0045] Optionally, in other embodiments, the extension member 2 includes a first section 201 and a second section 203, and the first section 201 and the second section 203 are slidingly connected to each other. By adjusting the overlapping length of the first section 201 and the second section 203, the distance between the lifting member 3 and the support member 1 can be adjusted. Specifically, the extension member 2 adopts a two-section telescopic structure, and the purpose of adjusting the distance between the lifting member 3 and the support member 1 is achieved through the telescopic function of the first section 201 and the second section 203.

[0046] It should be noted that, in the embodiment of the present invention, the first section 201 is sleeved on the outside of the second section 203 , and the overlapping length of the first section 201 and the second section 203 is adjusted by sliding between the first section 201 and the second section 203 , thereby adjusting the distance between the lifting member 3 and the support member 1 .

[0047] Optionally, in addition to adopting structures such as a hoist, in other embodiments, the lifting member 3 can adopt an elastic member with an elastic structure. Through its elastic effect, when a worker holds the bolt tensioner and moves it, it can move smoothly. At the same time, it can provide the worker with a certain auxiliary force, reducing the force used by the worker, which is conducive to reducing work intensity.

[0048] Alternatively, as Figure 4 As shown, in other embodiments, the lifting member 3 includes a fixed pulley 303 rotatably mounted at the end of the second section 203, a connecting rope 302 is wound around the fixed pulley 303, one end of the connecting rope 302 is connected to the bolt tensioner, and the other end of the connecting rope 302 is connected to the counterweight 301, that is, through the action of the fixed pulley 303, a connecting rope 302 is wound around the fixed pulley 303, one end of the connecting rope 302 is connected to the bolt tensioner, when the bolt tensioner is pulled, the counterweight 301 follows and rises, realizing the movement of the bolt tensioner, and at the same time the counterweight 301 offsets the weight of the bolt tensioner, which can provide workers with a certain amount of auxiliary force, reduce the strength used by workers, and help reduce work intensity.

[0049] It should be noted that the counterweight block 301 in the embodiment of the present invention is a detachable counterweight block 301, that is, it is composed of multiple counterweight blocks 301. By disassembling the counterweight block 301, it is convenient to adjust the weight of the counterweight block 301 according to the weight of different bolt tensioners.

[0050] Optionally, in other embodiments, the lifting member 3 includes a rotating wheel, a connecting rope 302 is wound around the rotating wheel, and one end of the connecting rope 302 is fixedly connected to the rotating wheel. A torsion spring is installed on the rotating wheel to drive the rotating wheel to rotate in the direction of tightening the connecting rope 302. Through the action of the torsion spring, when a certain pulling force is generated on the bolt tensioner, a certain auxiliary force can be given to the worker, reducing the strength used by the worker, which is conducive to reducing work intensity.

[0051] That is to say, the focus of the embodiment of the present invention is: first assemble the support member 1, the extension member 2 and the lifting member 3, that is, the extension member 2 is rotatably connected to the support member 1, and can rotate along the circumference of the support member 1, and the lifting member 3 is installed on the extension member 2, and is used to control the distance between the bolt tensioner and the extension member 2, that is, through the rotation of the extension member 2 and the support member 1, the lifting member 3 is adjusted to different angles around the support member 1, which is beneficial for workers to quickly adjust the position of the bolt tensioner according to the specific position of the bolt, and the height of the bolt tensioner can be adjusted under the action of the lifting member 3, further improving the convenience of operating the bolts, and by adjusting the state of the device, all bolts on the workpiece can be stretched, reducing manpower while increasing the safety of workers operating on the wheel hub, greatly improving the assembly efficiency of the unit, and there is no need for workers to hold the bolt tensioner continuously, and a single person can complete the stretching operation of the bolt, greatly reducing labor costs.

[0052] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0053] The above is a detailed introduction to the sling for a bolt tensioner provided by the present invention. This article uses specific examples to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only intended to help understand the method and core concept of the present invention. It should be pointed out that for ordinary technicians in this technical field, without departing from the principles of the present invention, various improvements and modifications can be made to the present invention, and these improvements and modifications also fall within the scope of protection of the claims of the present invention.

Claims

1. A hanger for a bolt tensioner, characterized in that: include: Support member (1); an extension member (2), the extension member (2) being connected to the support member (1) and being rotatable along the circumference of the support member (1); A lifting member (3) is installed on the extension member (2) and is used to control the distance between the bolt tensioner and the extension member (2).

2. A hanger for a bolt tensioner according to claim 1, characterized in that: The support member (1) is a rod-shaped structure, and a connecting portion (101) is provided at the end of the support member (1) away from the extension member (2); A connection groove is preset on the workpiece for connection with the connection portion (101).

3. A hanger for a bolt tensioner according to claim 2, characterized in that: The connection portion (101) and the connection groove are detachably connected by screwing.

4. A hanger for a bolt tensioner according to claim 3, characterized in that: The connecting portion (101) and the connecting groove are detachably connected through interference fit.

5. A hanger for a bolt tensioner according to claim 3, characterized in that: The connecting portion (101) and the connecting groove are detachably connected by magnet adsorption.

6. A hanger for a bolt tensioner according to claim 1, characterized in that: A support plate is installed on the end of the support member (1) away from the extension member (2), and a plurality of running wheels are provided on the side of the support plate away from the support member (1).

7. A hanger for a bolt tensioner according to claim 6, characterized in that: The extension member (2) comprises a first section (201) and a second section (203), one end of the first section (201) is rotatably connected to the support member (1), the other end of the first section (201) is provided with a rotating shaft (202) arranged parallel to the support member (1), one end of the second section (203) is rotatably connected to the rotating shaft (202), and the lifting member (3) is installed at the other end of the second section (203). The distance between the lifting member (3) and the support member (1) is adjusted by rotating the first section (201) and the second section (203).

8. The hanger for a bolt tensioner according to claim 6, characterized in that: The extension member (2) comprises a first section (201) and a second section (203), wherein the first section (201) and the second section (203) are slidably connected to each other, and the distance between the lifting member (3) and the supporting member (1) can be adjusted by adjusting the overlapping length of the first section (201) and the second section (203).

9. A hanger for a bolt tensioner according to any one of claims 1 to 8, characterized in that: The lifting member (3) can be a manual hoist or an electric hoist.

10. A hanger for a bolt tensioner according to claim 7 or 8, characterized in that: The lifting member (3) includes a fixed pulley (303) rotatably mounted on the end of the second section (203), a connecting rope (302) is wound around the fixed pulley (303), one end of the connecting rope (302) is connected to a bolt tensioner, and the other end of the connecting rope (302) is connected to a counterweight (301).

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