CN202073946U - Coupling for threading pipes of wind generating set - Google Patents

Abstract

The utility model relates to a threading pipe coupling of a generating set, which has a left joint, a spring, and a right partial joint. The spring is installed in the stepped card slot, the blocking surface at the front end of the stepped card slot is lower than the blocking surface at the rear end, one end of the spring is against the blocking surface at the rear end of the stepped card slot, and the other end of the spring is against the right part On the end face of the joint rear end, a sliding key is provided on the outer circumference of the front end of the left joint, and a keyway cooperating with the sliding key is provided on the inner peripheral surface of the right part of the joint. The threading pipe coupling of the utility model can be retracted so that the couplings for the input shaft of the generator and the output shaft of the speed-increasing box are conveniently installed and disassembled. The threading pipe coupling allows the left threading pipe and the right threading pipe to have a certain amount of eccentricity and allows a larger amount of eccentricity.

Description

Wind turbine threading pipe coupling

technical field

The utility model relates to the technical field of threading pipe couplings, in particular to a threading pipe coupling for wind power generating sets. the

Background technique

In a wind turbine, the electric control cabinet needs to provide power to the pitch cabinet, and the pitch cabinet rotates with the hub, while the electric control cabinet is stationary. To prevent twisting of the cables, conduits are required in the drive chain. As shown in Figure 1, the threading pipe layout of the wind power generating set, the threading pipe in this unit is divided into two sections, one is inside the generator, and the other is inside the gearbox and the main shaft. The function of the threading pipe coupling is to connect the two The two sections of threading pipes are connected together, and the two sections of threading pipes are kept synchronous, that is, there is no relative movement. The threading pipe coupling is arranged inside the coupling for the input shaft of the generator and the output shaft of the gearbox. The design of the threading pipe coupling determines the installation form of the coupling for the input shaft of the generator and the output shaft of the gearbox. And replacement feasibility and convenience. the

At present, the commonly used coupling for the input shaft of the generator and the output shaft of the gearbox is a hollow cylinder, which needs to be replaced if there is a failure during the operation of the fan. During the replacement process, the generator and the gearbox cannot be moved, which requires The design of the threading pipe coupling in the coupling can be easily disassembled and facilitates the disassembly of the coupling. In existing wind turbines, some threading pipe couplings use standard quincunx couplings, but quincunx couplings are not conducive to the disassembly of the couplings for the input shaft of the generator and the output shaft of the gearbox. In addition, there is a deviation in the center of the input shaft of the generator and the output shaft of the gearbox during installation, which leads to a deviation in the center of the threading pipe and the threading pipe. The threading pipe coupling in the prior art has no centering effect. the

Utility model content

The technical problem to be solved by the utility model is: to overcome the deficiencies of the prior art, to provide a threading pipe coupling for wind power generators, which can not only ensure the coupling of the input shaft of the generator and the output shaft of the gearbox It is easy to install and disassemble, and has the function of centering, which can reliably connect the threading pipe and the threading pipe together. the

The technical solution adopted by the utility model to solve the technical problem is: a threading pipe coupling for wind power generators, which has a left joint, a spring, and a right part joint, and both the left joint and the right part joint have hollow cavities inside. The front end of the left joint and the rear end of the right partial joint are connected by clearance fit, the outer periphery of the left joint has a stepped card slot, the spring is installed in the stepped card slot, and the front end of the stepped card slot The blocking surface of the spring is lower than the blocking surface at the rear end, one end of the spring is against the blocking surface at the rear end of the stepped card slot, the other end of the spring is against the end surface of the rear end of the right partial joint, and the left joint is A sliding key is provided on the outer circumference of the front end, and a key groove cooperating with the sliding key is provided on the inner peripheral surface of the right part of the joint. the

Further, the inside of the left joint has a first cavity connected to the first threading pipe joint of the output shaft of the gearbox and a second cavity for placing the line pipe, and the inside of the right part joint has a The third cavity connected to the second threading pipe joint of the machine input shaft, the fourth cavity for placing the wire tube, and the fifth cavity that is clearance-fitted with the front end of the left joint 1. the

Further, the first cavity and the second cavity are arranged and connected in steps, and the inner diameter of the first cavity is larger than the inner diameter of the second cavity; the third cavity, the fourth cavity, and the fifth cavity The cavities are arranged and connected in steps, the inner diameter of the fourth cavity is larger than that of the third cavity, and the inner diameter of the fifth cavity is larger than that of the fourth cavity. the

The left joint and the right part of the joint are matched with clearance in the circumferential direction, so that it has a self-aligning effect in a small range. The left joint and the right part joint cooperate with the keyway through the key, and can be guided by the sliding key to move left and right when the external force acts, and can transmit the circumferential torque. The threading pipe coupling of the utility model can be shortened due to the action of the spring under the action of an external force, so that the coupling for the input shaft of the generator and the output shaft of the speed-increasing box can be easily installed and removed. When the threading pipe coupling is installed, due to the force of the spring, the left joint and the right part of the joint can respectively press the first threading pipe joint and the second threading pipe joint and cooperate with the first threading pipe joint and the second threading pipe joint quadrilaterally, Therefore, the torque can be transmitted, the threading pipe coupling and the threading pipe joint can be synchronized, and the twisting of the cable in the threading pipe can be prevented. The above-mentioned threading pipe coupling has a small range of self-aligning effect, and is suitable for occasions where the neutrality requirement of the input shaft of the generator and the output of the gearbox is relatively high. the

Further, the right partial joint includes a bearing seat and a right end joint, and the inside of the right end joint has a sixth cavity connected with the second threading pipe joint of the generator input shaft and a seventh cavity for placing the line pipe. Cavity, the outer circumference of the right end joint has the first step, the second step, and the third step which are successively reduced, and the joint bearing is installed on the second step, and the joint bearing is locked on the right end joint by a nut. The bearing seat Inside there is an eighth cavity for clamping the joint bearing, a ninth cavity for placing nuts and threading pipes, and a tenth cavity for clearance fit with the front end of the left joint. The outer circumference of the bearing seat is Stepped type, one end of the spring is against the blocking surface at the rear end of the stepped card slot, the other end of the spring is against the end face of the rear end of the bearing seat, and the keyway for matching with the sliding key is provided in the bearing seat . the

Further, the sixth cavity and the seventh cavity are arranged and connected in steps, and the inner diameter of the sixth cavity is smaller than the inner diameter of the seventh cavity; the eighth cavity, the ninth cavity, and the tenth cavity The cavities are arranged and connected in steps, the inner diameter of the tenth cavity is smaller than the inner diameter of the ninth cavity, and the inner diameter of the ninth cavity is smaller than the inner diameter of the eighth cavity. the

A joint bearing is added to the right end joint. This structure has a large self-aligning capacity and a wide range of applications. the

The beneficial effect of the utility model is: in summary, the threading pipe coupling of the utility model can be shortened under the action of external force, and the threading pipe coupling and the threading pipe joint can transmit torque, so that the threading pipe coupling and the threading pipe joint can transmit torque. The threading pipe joints are kept in sync, which prevents twisting of the cables in the threading pipe. The threading pipe coupling can be retracted so that the coupling for the input shaft of the generator and the output shaft of the gearbox can be easily installed and disassembled. The threading pipe coupling allows the left threading pipe and the right threading pipe to have a certain amount of eccentricity and allows a larger amount of eccentricity. The threading pipe coupling of the utility model has better centering effect. the

Description of drawings

Below in conjunction with accompanying drawing, the utility model is further described. the

Fig. 1 is a structural schematic diagram of Embodiment 1 of the threading pipe coupling of wind power generating set in the utility model;

Fig. 2 is the installation schematic diagram of Embodiment 1 of the threading pipe coupling of wind power generating set in the utility model;

Fig. 3 is a structural schematic diagram of Embodiment 2 of the threading pipe coupling of the wind power generating set in the utility model;

Fig. 4 is the installation schematic diagram of Embodiment 2 of the threading pipe coupling of the wind power generating set in the utility model;

Among them: 1. Left joint, 2. Spring, 3. Speed-up box, 4. First threading pipe joint, 5. Generator, 6. Second threading pipe joint, 7. Right joint, 8. Joint bearing, 9. Bearing seat, 10. nut, 11. gland. the

Detailed ways

The utility model is described further in conjunction with accompanying drawing now. These drawings are simplified schematic diagrams only to illustrate the basic structure of the utility model in a schematic way, so they only show the configurations related to the utility model. the

Embodiment 1: As shown in Figure 1 and Figure 2, a threading pipe coupling for a wind power generating set has a left joint 1, a spring 2, and a right part of the joint. Both the left joint 1 and the right part of the joint have hollow cavities inside. The front end of the joint 1 is connected with the rear end of the right part of the joint by clearance fit. The outer circumference of the left joint 1 has a stepped card slot, and the spring 2 is installed in the stepped card slot. The blocking surface of the front end of the stepped card slot is lower than that of the rear end. Blocking surface, one end of spring 2 is against the blocking surface at the rear end of the stepped card slot, the other end of spring 2 is against the end face of the rear end of the right part of the joint, a slide key is provided on the outer circumference of the front end of the left joint 1, and the right part of the joint The inner peripheral surface is provided with a key groove matched with the sliding key. the

The inside of the left joint 1 has a first cavity connected to the first threading pipe joint 4 of the output shaft of the gearbox 3 and a second cavity for placing the line pipe, and the inside of the right part of the joint has a first cavity connected to the input shaft of the generator 5. The third cavity connected to the two threading pipe joints 6, the fourth cavity for placing the line pipe, and the fifth cavity that is clearance-fitted with the front end of the left joint 1. The first cavity and the second cavity are connected in a stepwise arrangement, and the inner diameter of the first cavity is greater than the inner diameter of the second cavity; the third cavity, the fourth cavity, and the fifth cavity are connected in a stepwise arrangement, and the fourth cavity The inner diameter of the cavity is larger than that of the third cavity, and the inner diameter of the fifth cavity is larger than that of the fourth cavity. the

The left joint 1 and the right part of the joint are fitted with a gap in the circumferential direction, so that it has a self-aligning effect in a small range. The left joint 1 and the right part joint cooperate with the keyway through the key, and can be guided by the sliding key to move left and right when an external force acts, and can transmit circumferential torque. When the threading pipe coupling is installed, due to the active force of the spring 2, the left joint 1 and the right part of the joint can be pressed against the first threading pipe joint 4 and the second threading pipe joint 6 respectively and can be connected with the first threading pipe joint 4 and the second threading pipe joint 4 and the second threading pipe joint. Pipe joint 6 quadrilateral fits, thereby can transmit torque, makes threading pipe coupling and threading pipe joint keep synchronously, prevents the twisting of cable in the threading pipe. The above-mentioned threading pipe coupling has a small range of self-aligning effect, and is suitable for occasions where the neutrality requirement of the input shaft of the generator and the output of the gearbox is relatively high. the

Embodiment 2: As shown in Fig. 3 and Fig. 4, a threading pipe coupling for a wind power generating set, the right part of the joint includes a bearing seat 9 and a right end joint 7, and the inside of the right end joint 7 has a second threading line with the input shaft of the generator 5 The sixth cavity connected by the pipe joint 6 and the seventh cavity for placing the line pipe, the outer circumference of the right end joint 7 has the first step, the second step, and the third step which are successively reduced, and joints are installed on the second step Bearing 8, joint bearing 8 is locked on the right end joint 7 by nut 10, and the front end of bearing block 9 has gland 11, and gland 11 presses joint bearing 8. the

The bearing seat 9 has an eighth cavity for clamping the joint bearing 8, a ninth cavity for placing the nut 10 and a threading pipe, and a tenth cavity for clearance fit with the front end of the left joint 1. The bearing The outer periphery of seat 9 is stepped, and one end of spring 2 is against the blocking surface of the stepped draw-in groove rear end, and the other end of spring 2 is against the end face of bearing seat 9 rear end, and bearing seat 9 is provided with the keyway that cooperates with sliding key. the

The sixth cavity and the seventh cavity are connected in a stepwise arrangement, and the inner diameter of the sixth cavity is smaller than the inner diameter of the seventh cavity; the eighth cavity, the ninth cavity, and the tenth cavity are connected in a stepwise arrangement, and the tenth cavity The inner diameter of the cavity is smaller than the inner diameter of the ninth cavity, and the inner diameter of the ninth cavity is smaller than the inner diameter of the eighth cavity. A joint bearing 8 is added to the right end joint 7. This structure has a large amount of self-alignment and a wide range of applications. the

The threading pipe coupling of the utility model can be retractable so that the coupling for the input shaft of the generator 5 and the output shaft of the speed-increasing box 3 is convenient to install and disassemble. The threading pipe coupling allows the left threading pipe and the right threading pipe to have a certain amount of eccentricity and allows a larger amount of eccentricity. The threading pipe coupling of the utility model has better centering effect. the

Finally, it should be noted that the above embodiments are only used to illustrate the utility model rather than limit the technical solutions described in the utility model; Those of ordinary skill in the art should understand that the utility model can still be modified or equivalently replaced; and all technical solutions and improvements that do not depart from the spirit and scope of the utility model should be covered by the scope of claims of the utility model . the

Claims (5)

1. wind power generating set penetration pipe coupling, it is characterized in that: have left joint (1), spring (2), the right half joint, left side joint (1), right half joint inside all has hollow cavity, described left joint (1) front end end and tip-clearance, right half joint rear end are connected, described left joint (1) periphery has the cascade draw-in groove, described spring (2) is installed in the cascade draw-in groove, the prevent surface of described cascade draw-in groove front end is lower than the prevent surface of its rear end, described spring (2) one ends are against on the prevent surface of cascade draw-in groove rear end, the other end of described spring (2) is against on the end face of right half joint rear end, described left joint (1) front end end excircle is provided with slide key, and the inner peripheral surface of described right half joint is provided with the keyway that cooperates with slide key.

2. wind power generating set penetration pipe coupling according to claim 1, it is characterized in that: described left joint (1) inside has first cavity that is connected with the first penetration pipe joint (4) of speedup box (3) output shaft and second cavity that is used to place spool, and described right half joint inside has the 3rd cavity that is connected with the second penetration pipe joint (6) of generator (5) input shaft, is used to place the 4th cavity of spool and the 5th cavity that cooperates with left joint (1) front end tip-clearance.

3. wind power generating set penetration pipe coupling according to claim 2 is characterized in that: described first cavity, the second cavity cascade are arranged and are connected, and the internal diameter of first cavity is greater than the internal diameter of second cavity; Described the 3rd cavity, the 4th cavity, the 5th cavity cascade are arranged and are connected, and the internal diameter of the 4th cavity is greater than the internal diameter of the 3rd cavity, and the internal diameter of the 5th cavity is greater than the internal diameter of the 4th cavity.

4. wind power generating set penetration pipe coupling according to claim 1, it is characterized in that: described right half joint comprises bearing support (9) and right-hand member joint (7), described right-hand member joint (7) inside has the 6th cavity that is connected with the second penetration pipe joint (6) of generator (5) input shaft and the 7th cavity that is used to place spool, the periphery of described right-hand member joint (7) has first ladder that reduces successively, second ladder, the 3rd ladder, joint shaft bearing (8) is installed on second ladder, joint shaft bearing (8) is locked on the right-hand member joint (7) by nut (10), described bearing support (9) inside has the 8th cavity that is used to block joint shaft bearing (8), be used to place the 9th cavity of nut (10) and penetration pipe, be used for the tenth cavity that cooperates with left joint (1) front end tip-clearance, described bearing support (9) periphery is a cascade, described spring (2) one ends are against on the prevent surface of cascade draw-in groove rear end, the other end of described spring (2) is against on the end face of bearing support (9) rear end, and described bearing support is provided with the keyway that cooperates with slide key in (9).

5. wind power generating set penetration pipe coupling according to claim 4 is characterized in that: described the 6th cavity, the 7th cavity cascade are arranged and are connected, and the internal diameter of the 6th cavity is less than the internal diameter of the 7th cavity; Described the 8th cavity, the 9th cavity, the tenth cavity cascade are arranged and are connected, and the internal diameter of the tenth cavity is less than the internal diameter of the 9th cavity, and the internal diameter of the 9th cavity is less than the internal diameter of the 8th cavity.

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