Tool and assembly structure for realizing quick preassembling of nut

Abstract

The tool comprises a sleeve and an operation cup, the sleeve is provided with a through hole allowing a double-end stud to be inserted therein, and meanwhile, the inner wall of one end of the sleeve is provided with a concave cavity corresponding to the outer contour shape of the nut, so that the sleeve is conveniently arranged on the nut in a sleeving mode and is in clearance fit with the nut; the operation cup is arranged at the other end of the sleeve in a covering mode, an abutting column is arranged in the operation cup and located on the central axis of the operation cup, one end of the abutting column is connected with the bottom of the operation cup, the other end of the abutting column is flush with a cup opening of the operation cup, the abutting column is inserted into the sleeve, and meanwhile a threaded hole penetrating through the inner wall and the outer wall of the operation cup is formed in the side wall of the operation cup. Bolts can conveniently penetrate through the threaded holes from the outside to abut against the outer wall of the sleeve, so that the operation cup and the sleeve are fixed; a wrench connector matched with a pneumatic wrench working head is arranged in the center of the outer side of the bottom of the operation cup. The device can efficiently preassemble the nut and measure the exposed length of the stud, effectively reduces the labor intensity of operators, improves the assembly efficiency, and reduces the labor cost.

Description

Technical Field

[0001] The utility model belongs to the technical field of mechanical engineering, and in particular relates to a tool and an assembly structure for realizing rapid pre-assembly of nuts. Background Art

[0002] With the rapid development of wind power generation, wind power speed increaser is an important component of wind power generation, so the assembly of wind power speed increaser is particularly important.

[0003] When pre-installing nuts on the studs on the existing wind turbine speed increaser, they are usually pre-installed manually in place and then torqued. However, the wind turbine speed increaser is large and has many studs distributed. Manual pre-installation takes a lot of time to complete, which is not only inefficient but also has high labor intensity for operators, occupies a large amount of human resources, and undoubtedly increases labor costs. At the same time, there is friction when the nuts and studs are pre-installed. When the friction is large, manual pre-installation may not be in place, affecting the assembly quality. In severe cases, the thread on the nut will be damaged, and the nut needs to be replaced and pre-installed again.

[0004] In addition, the appearance specifications of wind turbine speed increasers require that the exposed length of the studs on the unified joint surface must remain consistent. The exposed length of the studs needs to be measured during the assembly process. The existing technology usually uses a micrometer or caliper to measure, which is complicated to operate. Summary of the Invention

[0005] In view of the above-mentioned deficiencies in the prior art, the purpose of the present invention is to provide a tooling and assembly structure for realizing rapid pre-installation of nuts. The present invention can efficiently pre-install nuts and measure the exposed length of studs, effectively reducing the labor intensity of operators, improving assembly efficiency, and reducing labor costs.

[0006] The technical solution of the present utility model is achieved as follows:

[0007] A tool for quickly pre-installing nuts, comprising a sleeve and an operating cup, wherein the sleeve has a through hole for inserting a stud, and the inner wall of one end of the sleeve has a concave cavity corresponding to the outer contour of the nut, so that the sleeve is conveniently sleeved on the nut and loosely matched with the nut; the operating cup cover is provided at the other end of the sleeve, and an abutment column is provided in the operating cup, wherein the abutment column is located on the central axis of the operating cup, one end of the abutment column is connected to the bottom of the operating cup, and the other end is flush with the cup mouth of the operating cup, and the abutment column is inserted into the sleeve, and a threaded hole penetrating the inner and outer walls of the operating cup is provided on the side wall of the operating cup, so that the bolt can pass through the threaded hole from the outside and abut against the outer wall of the sleeve, thereby fixing the operating cup and the sleeve.

[0008] A wrench interface that cooperates with the pneumatic wrench working head is provided at the outer center of the bottom of the operating cup, which facilitates the insertion of the pneumatic wrench working head into the wrench interface to achieve rapid pre-installation of the nut.

[0009] Furthermore, a groove corresponding to the bolt is provided on the outer wall of the sleeve along the axial direction of the sleeve, and scale lines are provided on the outer wall of the sleeve corresponding to both sides of the groove, so that when the nut is pre-installed in place, the operating cup slides down and the abutting column of the operating cup abuts against the stud, thereby measuring the exposed length of the stud.

[0010] The utility model also provides an assembly structure for realizing rapid pre-installation of nuts, including a wind turbine speed increaser box body, a stud, a washer, a nut and the aforementioned tooling for realizing rapid pre-installation of nuts, one end of the stud is inserted into the wind turbine speed increaser box body, the washer and the nut are sleeved on the stud and the washer is located between the nut and the wind turbine speed increaser box body, the other end of the stud is inserted into the through hole of the sleeve, and the sleeve is sleeved on the nut and matched with the nut clearance.

[0011] Compared with the prior art, the present invention has the following beneficial effects:

[0012] 1. The sleeve of the present invention has a certain length, and one end of the sleeve has a concave cavity corresponding to the outer contour of the nut, so that it can be used to quickly insert the nut onto double-column studs of different specifications and lengths. The operating cup and sleeve are then fixed with bolts. The nut can be quickly pre-installed by acting on the wrench interface with a pneumatic wrench. The entire process is simple to operate, effectively reducing the labor intensity of the operator and improving assembly efficiency. At the same time, the clearance between the sleeve and the nut can effectively prevent the nut from being assembled incorrectly during manual installation, thereby ensuring assembly quality.

[0013] 2. The utility model provides a groove on the outer wall of the sleeve along the axial direction of the sleeve, and a scale line is provided on the outer wall of the sleeve corresponding to at least one side of the groove. When the nut is pre-installed in place, the exposed length of the stud can be quickly measured. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 -Schematic diagram of the structure of the utility model.

[0015] Among them: 1-sleeve; 2-operating cup; 3-bolt; 4-wrench interface; 5-groove; 6-nut; 7-stud; 8-washer; 9-wind turbine speed increaser box body. DETAILED DESCRIPTION

[0016] The present invention will be described in further detail below with reference to the accompanying drawings and specific implementation methods.

[0017] See also Figure 1, a tool for realizing rapid pre-installation of nuts, comprising a sleeve 1 and an operating cup 2, the sleeve 1 having a through hole for inserting a stud 7, and a concave cavity corresponding to the outer contour shape of the nut 6 on the inner wall of one end of the sleeve 1, so that the sleeve 1 is sleeved on the nut 6 and fits with the nut 6 with a clearance; the operating cup 2 is covered at the other end of the sleeve 1, and an abutment column is provided in the operating cup 2, the abutment column is located on the central axis of the operating cup 2, one end of the abutment column is connected to the bottom of the operating cup 2, and the other end is flush with the cup mouth of the operating cup 2, the abutment column is inserted into the sleeve 1, and a threaded hole penetrating the inner and outer walls of the operating cup is provided on the side wall of the operating cup 2, so that the bolt 3 passes through the threaded hole from the outside and abuts against the outer wall of the sleeve 1, thereby fixing the operating cup 2 and the sleeve 1.

[0018] A wrench interface 4 that cooperates with a pneumatic wrench working head is provided at the center of the outer bottom of the operating cup 2 , so that the pneumatic wrench working head can be easily inserted into the wrench interface 4 to achieve rapid pre-installation of the nut 6 .

[0019] In this way, one end of the sleeve has a concave cavity corresponding to the outer contour of the nut, which facilitates the sleeve to be quickly inserted into the nut. When the nut used is a hexagonal nut, the corresponding end of the sleeve has a hexagonal concave cavity, so that the sleeve can be sleeved on the nut and matched with the nut clearance. At the same time, the sleeve has a through hole for the stud to pass through, so that the nut can be pre-installed on double-column studs of different specifications and lengths. Then, the operating cup and the sleeve are fixed with bolts. The nut can be quickly pre-installed by acting on the wrench interface with a pneumatic wrench. The whole process is simple to operate, which can effectively reduce the labor intensity of the operator and improve assembly efficiency. At the same time, the clearance between the sleeve and the nut can effectively avoid the situation where the nut is not assembled in place during manual installation, thereby ensuring assembly quality.

[0020] In practice, the operating cup and the abutment column are integrally formed, and the setting of the operating column can effectively ensure the structural strength of the operating cup. At the same time, the sleeve has a certain length.

[0021] During specific implementation, a groove 5 corresponding to the bolt 3 is provided on the outer wall of the sleeve 1 along the axial direction of the sleeve 1, and a scale line is provided on the outer wall of the sleeve corresponding to at least one side of the groove 5, so that when the nut 6 is pre-installed in place, the operating cup 2 slides down and the abutting column of the operating cup 2 abuts against the stud 7, thereby measuring the exposed length of the stud 7.

[0022] like Figure 1 In this embodiment, the zero mark on the scale line is located at the bottom edge of the sleeve, making reading easier. When the nut is pre-installed, the bottom edge of the sleeve and the bottom edge of the nut are always flush. Simply slide the operating cup down until the abutment post contacts the stud. The scale mark corresponding to the cup mouth indicates the exposed stud length. This tool allows for quick and easy measurement of the exposed stud length, eliminating the need for measuring tools such as calipers or micrometers at the assembly site.

[0023] An assembly structure for realizing rapid pre-installation of nuts, comprising a wind turbine speed increaser housing 9, a stud 7, a washer 8, a nut 6 and the aforementioned tooling for realizing rapid pre-installation of nuts, wherein one end of the stud 7 is inserted into the wind turbine speed increaser housing 9, the washer 8 and the nut 6 are sleeved on the stud 7 and the washer 8 is located between the nut 6 and the wind turbine speed increaser housing 9, the other end of the stud 7 is inserted into the through hole of the sleeve 1, and the sleeve 7 is sleeved on the nut 6 and is loosely matched with the nut 6.

[0024] Finally, it should be noted that the above embodiments of the present invention are merely examples for illustrating the present invention and are not intended to limit the implementation methods of the present invention. Those skilled in the art will appreciate that other variations and modifications based on the above description are possible. It is not possible to enumerate all implementation methods here. Any obvious variations or modifications arising from the technical solution of the present invention remain within the scope of protection of the present invention.

Claims

1. A tool for realizing rapid pre-installation of nuts, characterized in that: The invention comprises a sleeve and an operating cup, wherein the sleeve has a through hole for inserting a stud, and the inner wall of one end of the sleeve has a concave cavity corresponding to the outer contour of the nut, so that the sleeve is conveniently sleeved on the nut and fits with the nut clearance; the operating cup cover is provided at the other end of the sleeve, and an abutment column is provided in the operating cup, the abutment column is located on the central axis of the operating cup, one end of the abutment column is connected to the bottom of the operating cup, and the other end is flush with the cup mouth of the operating cup, and the abutment column is inserted into the sleeve, and a threaded hole is provided on the side wall of the operating cup that passes through the inner and outer walls of the operating cup, so that the bolt can pass through the threaded hole from the outside and abut against the outer wall of the sleeve, thereby fixing the operating cup and the sleeve; A wrench interface that cooperates with the pneumatic wrench working head is provided at the outer center of the bottom of the operating cup, which facilitates the insertion of the pneumatic wrench working head into the wrench interface to achieve rapid pre-installation of the nut.

2. A tool for realizing rapid pre-installation of nuts according to claim 1, characterized in that: Along the axial direction of the sleeve, a groove corresponding to the bolt is provided on the outer wall of the sleeve, and scale lines are provided on the outer wall of the sleeve corresponding to both sides of the groove, so that when the nut is pre-installed in place, the operating cup slides down and the abutment column of the operating cup abuts against the stud, thereby measuring the exposed length of the stud.

3. An assembly structure for realizing rapid pre-assembly of nuts, characterized in that: It includes a wind turbine speed increaser box body, a stud, a washer, a nut and a tool for realizing rapid pre-installation of nuts as described in claim 1 or 2, one end of the stud is inserted into the wind turbine speed increaser box body, the washer and the nut are sleeved on the stud and the washer is located between the nut and the wind turbine speed increaser box body, the other end of the stud is inserted into the sleeve through hole, and the sleeve is sleeved on the nut and is loosely matched with the nut.

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