CN110552851B

CN110552851B - Manual barring gear

Info

Publication number: CN110552851B
Application number: CN201910856256.5A
Authority: CN
Inventors: 李达; 姜宏伟; 李超峰; 黄虎; 王书勇; 王晓东; 薛晓云; 王岳峰; 朱少辉; 宁文钢; 隋学坤; 王豪; 石磊
Original assignee: Taiyuan Heavy Industry Co Ltd
Current assignee: Taiyuan Heavy Industry Co Ltd
Priority date: 2019-09-11
Filing date: 2019-09-11
Publication date: 2021-08-27
Anticipated expiration: 2039-09-11
Also published as: CN110552851A

Abstract

The invention discloses a manual barring gear, comprising: support, sleeve, spline housing, transmission shaft, gear and hand wheel. The bracket is arranged on the speed increaser and used for providing a mounting base; the sleeve is arranged on the bracket, and the inner wall of the sleeve is in fit engagement with the outer wall of the spline sleeve; the transmission shaft can be rotatably arranged in the inner hole of the spline housing in a penetrating way, and two ends of the transmission shaft are positioned outside the spline housing; the gear is sleeved at one end of the transmission shaft and is used for being meshed with the brake disc; a certain amount of eccentricity is formed between the center of the outer spline of the spline sleeve and the center of the inner hole, and the meshing side clearance of the gear is adjusted by adjusting the meshing direction of the spline; the hand wheel is sleeved at the other end of the transmission shaft, and the diameter of the hand wheel is larger than that of the gear. According to the manual barring gear, the transmission shaft is driven to rotate by rotating the hand wheel, and the transmission shaft drives the gear to rotate so as to achieve the purpose of rotating the brake disc, so that the barring operation of a large-sized unit can be completed in a labor-saving manner, and the operation difficulty is reduced.

Description

Manual barring gear

Technical Field

The invention relates to the technical field of mechanical transmission, in particular to a manual turning gear.

Background

During the use process of the double-fed wind generating set, the turning operation of a transmission chain is often required. For example, firstly, when the impeller is integrally hoisted, the main shaft flange is rotated through the turning gear, so that the main shaft mounting hole is aligned with the hub mounting hole, and the impeller is convenient to mount; secondly, when the hub is subsequently overhauled and maintained, the locking disc needs to be rotated through the barring, so that the locking hole in the locking disc is aligned with the impeller locking pin, and the impeller is conveniently locked; and thirdly, if the engine room is kept still for a long time in a factory, in order to avoid the damage of a transmission chain bearing, the engine is required to be turned regularly.

In the prior art, when the barring operation of the double-fed wind generating set is performed, the barring operation is generally performed at a high speed level due to the large transmission ratio of the speed increaser of the double-fed wind generating set, and the barring is realized by driving a brake disc on a coupler to rotate. The small wind generating set can complete jigger by directly rotating the brake disc, but for a large double-fed wind generating set, the impeller and each transmission part have large weight, large rotational inertia, large friction torque and large wind load, and the brake disc is difficult to directly rotate.

Disclosure of Invention

In order to solve the technical problems in the prior art, the invention provides a manual barring gear. The specific technical scheme is as follows:

a manual barring apparatus, comprising: the device comprises a bracket, a sleeve, a spline sleeve, a transmission shaft, a gear and a hand wheel; the bracket is arranged on the speed increaser and used for providing a mounting base; the sleeve is arranged on the bracket, and the inner wall of the sleeve is an internal spline and is in fit engagement with an external spline of the spline sleeve; the transmission shaft is rotatably arranged in the inner hole of the spline housing in a penetrating way, and two ends of the transmission shaft are positioned outside the spline housing; the gear is sleeved at one end of the transmission shaft and is used for being meshed with the brake disc; the hand wheel is sleeved at the other end of the transmission shaft, and the diameter of the hand wheel is larger than that of the gear.

In one possible design, the sleeve is detachably connected with the spline housing; the gear is detachably connected with the transmission shaft; the hand wheel is detachably connected with the transmission shaft.

In one possible design, one end of the transmission shaft is provided with a shaft shoulder, the other end of the transmission shaft is provided with a detachable shaft end check ring, and two end faces of the spline housing are respectively abutted to the shaft shoulder and the shaft end check ring.

In one possible design, two self-lubricating bushings are sleeved on the transmission shaft.

In a possible design, the other end of the transmission shaft is of a hexagonal structure, and the hand wheel mounting inner hole is of a hexagonal structure matched with the hexagonal structure.

In one possible design, two ends of the sleeve are respectively provided with a first baffle plate, the first baffle plates cover part of the end face of the spline housing and are connected with the bracket through bolts, and the first baffle plates can rotate around the bolts; the gear is connected with the transmission shaft through a flat key, one side face of the gear abuts against one shaft shoulder, the other side face of the gear abuts against a second baffle, and the second baffle is fixed on one end face of the transmission shaft through a bolt; one side face of the hand wheel is abutted to the hexagonal head machining end face of the transmission shaft, the other side face of the hand wheel is abutted to a third baffle, and the third baffle is fixed to the other end face of the transmission shaft through a bolt.

In one possible design, the spline housing has a certain amount of eccentricity between the center of the external spline and the center of the internal bore.

In one possible design, the support comprises two vertical plates which are parallel and opposite at intervals and a bottom plate which is respectively connected with the two vertical plates, and two ends of the sleeve are respectively connected with the two vertical plates; the bottom plate is connected to the speed increaser through a bolt.

The technical scheme of the invention has the following main advantages:

according to the manual barring gear, the transmission shaft is driven to rotate by rotating the hand wheel, and the transmission shaft drives the gear to rotate so as to achieve the purpose of rotating the brake disc, so that the barring operation of a large-sized unit can be completed in a labor-saving manner, and the operation difficulty is reduced.

The manual turning gear device is simple to mount, adjust and disassemble and high in efficiency, the hand wheel can be disassembled and assembled only by disassembling and assembling one fixing bolt in the middle of the third baffle plate, the integral gear spline shaft can be disassembled and assembled only by shifting the first baffle plate, and the gear meshing backlash can be adjusted only by adjusting the meshing direction of the spline.

According to the manual barring gear, the tail end of the transmission shaft is a standard external hexagon, and when a hand wheel cannot be barring under special conditions, a torque wrench can be used for driving the transmission shaft to rotate so as to achieve high-torque output barring.

Drawings

The accompanying drawings, which are included to provide a further understanding of embodiments of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and not to limit the invention. In the drawings:

fig. 1 is a sectional view of a manual barring apparatus according to an embodiment of the present invention;

fig. 2 is a perspective view illustrating a structure of a manual barring gear according to an embodiment of the present invention;

fig. 3 is a front view of a manual barring apparatus according to an embodiment of the present invention;

fig. 4 is a schematic view illustrating a use state of the manual barring gear according to an embodiment of the present invention.

Description of reference numerals:

the self-lubricating bearing comprises a support 1, a vertical plate 101, a bottom plate 102, a reinforcing beam 103, a sleeve 2, a spline housing 3, a transmission shaft 4, a gear 5, a hand wheel 6, a shaft shoulder 7, a self-lubricating shaft sleeve 8, a first baffle plate 9, a flat key 10, a second baffle plate 11, a third baffle plate 12 and a shaft end retainer ring 13.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be clearly and completely described below with reference to the specific embodiments of the present invention and the accompanying drawings. It is to be understood that the described embodiments are merely a few embodiments of the invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without making any creative effort, shall fall within the protection scope of the present invention.

The technical scheme provided by the embodiment of the invention is described in detail below with reference to the accompanying drawings.

An embodiment of the present invention provides a manual turning gear, as shown in fig. 1 to 4, including: the device comprises a bracket 1, a sleeve 2, a spline housing 3, a transmission shaft 4, a gear 5 and a hand wheel 6. The bracket 1 is arranged on the speed increaser and used for providing a mounting base; sleeve 2 sets up on support 1, and the inner wall of sleeve 2 is the internal spline, meshes with the external spline adaptation of spline housing 3. The transmission shaft 4 is rotatably inserted into the inner hole of the spline housing 3, and both ends of the transmission shaft are located outside the spline housing 3. The gear 5 is sleeved at one end of the transmission shaft 4 and is used for being meshed with a brake disc; the hand wheel 6 is sleeved at the other end of the transmission shaft 4, and the diameter of the hand wheel 6 is larger than that of the gear 5.

The working principle of the manual barring gear provided by the embodiment of the invention is explained as follows:

when the speed increaser is used, the sleeve 2 is arranged on the support 1, the support 1 is arranged on the speed increaser, and the sleeve 2 and the support 1 are used as an installation foundation and are relatively fixed with the speed increaser. The spline housing 3 is arranged in the sleeve 2 in a penetrating way, and the spline housing 3 is engaged with the sleeve 2 in a matching way and is relatively fixed. The transmission shaft 4 is rotatably arranged in the spline housing 3 in a penetrating mode, the two ends of the transmission shaft 4 are respectively sleeved with the gear 5 and the hand wheel 6, the transmission shaft 4 is driven to rotate by rotating the hand wheel 6, and then the gear 5 is driven to rotate. The gear 5 is meshed with a brake disc, and the gear 5 drives the brake disc meshed with the gear to rotate when rotating, so that the turning operation is completed. Because the diameter of the hand wheel 6 is larger than that of the gear 5, a larger rotating moment can be obtained by applying a smaller force on the hand wheel 6, so that the turning process is labor-saving. The schematic diagram of the using state of the manual barring gear can be seen in fig. 4.

Therefore, the manual barring device provided by the embodiment of the invention drives the transmission shaft 4 to rotate by rotating the hand wheel 6, and the transmission shaft 4 drives the gear 5 to rotate so as to achieve the purpose of rotating the brake disc, so that the barring operation of a large-scale unit can be completed in a labor-saving manner, and the operation difficulty is reduced.

Optionally, in the embodiment of the present invention, the sleeve 2 is detachably connected to the spline housing 3; the gear 5 is detachably connected with the transmission shaft 4; the hand wheel 6 is detachably connected with the transmission shaft 4.

So set up, spline housing 3, transmission shaft 4, gear 5 assemble in advance for holistic gear spline shaft, when carrying out the barring operation, with gear spline shaft whole insert sleeve 2 in, have a certain amount of eccentricities between 3 external splines centers of spline housing and the hole center, adjust gear engagement backlash through the spline engagement position of adjustment spline housing 3 and sleeve 2, then installation hand wheel 6, can carry out the barring operation. And after turning is finished, the hand wheel 6 is disassembled, and the integral gear spline shaft is taken out, so that the gear spline shaft is easy to disassemble and assemble.

Further, for a plurality of fans of a wind field, except that the support 1 and the sleeve 2 are arranged on the speed increaser of each fan, only one set of barring tools (comprising the spline housing 3, the transmission shaft 4, the gear 5 and the hand wheel 6) are needed to be prepared for barring one by one. So set up, equipment structure has been simplified on the one hand, and fan department does not be equipped with the barring instrument when on the other hand need not the barring, avoids taking place the loss and the noise of barring instrument when need not the barring.

Optionally, in the manual turning tool provided in the embodiment of the present invention, as shown in fig. 1, one end of the transmission shaft 4 is provided with a shaft shoulder 7, the other end of the transmission shaft is provided with a detachable shaft end retainer 13, and two end surfaces of the spline housing 3 respectively abut against the shaft shoulder 7 and the shaft end retainer 13. So set up, make transmission shaft 4 relatively fixed in the axial, avoid transmission shaft 4 to slide.

Further, as shown in fig. 1, two self-lubricating flanging shaft sleeves 8 are sleeved on the transmission shaft 4. Through setting up self-lubricating axle sleeve 8, reduce coefficient of friction, improve transmission efficiency, the wearability is higher, extension equipment life. The self-lubricating shaft sleeve 8 is provided with a solid lubricant, and maintenance is not needed in the using process.

In the embodiment of the invention, the sleeve 2 and the spline housing 3 are detachably connected; the gear 5 is detachably connected with the transmission shaft 4; the hand wheel 6 is detachably connected to the drive shaft 4, and as to how it is connected, an example is given below:

the two ends of the sleeve 2 are respectively provided with a first baffle plate 9, the first baffle plate 9 covers part of the end face of the spline housing 3 and is connected with the support 1 through a bolt, and the first baffle plate 9 can rotate around the bolt. The gear 5 is connected with the transmission shaft 4 through a flat key 10, one side surface of the gear 5 abuts against one shaft shoulder 7, the other side surface of the gear 5 abuts against a second baffle plate 11, and the second baffle plate 11 is fixed on one end surface of the transmission shaft 4 through a bolt. The gear 5 is connected with the transmission shaft 4 through a flat key 10, so that the gear 5 in the circumferential direction can rotate along with the transmission shaft 4, the gear 5 is axially limited by the second baffle 11 matched with the shaft shoulder 7, and the gear 5 is prevented from axially sliding. One side surface of the hand wheel 6 is abutted against the hexagonal head processing end surface of the transmission shaft 4, the other side surface of the hand wheel is abutted against the third baffle plate 12, and the third baffle plate 12 is fixed on the other end surface of the transmission shaft 4 through a bolt. The hand wheel 6 is limited through the third baffle 12, and the hand wheel 6 is prevented from sliding axially.

The whole gear spline shaft is assembled and fixed through the first baffle 9, and the disassembly and assembly process can be quickly completed only by rotating the first baffle 9.

Optionally, in the manual turning device provided by the embodiment of the present invention, the spline housing 3 has a certain amount of eccentricity between the center of the external spline and the center of the inner bore, that is, the axis of the inner bore and the axis of the external spline are not collinear. So set up, when spline housing 3 inserted sleeve 2 with the angle of difference, the distance between the axis of transmission shaft 4 and brake disc is different, through the meshing position of control spline housing 3 and sleeve 2, can adjust the meshing backlash of gear 5 and brake disc.

Optionally, the other end of the transmission shaft 4 according to the embodiment of the present invention is in a hexagonal structure. So set up, on the one hand, through setting up the hole with hand wheel 6 into the hexagonal structure of looks adaptation, can avoid the relative slip of hand wheel 6 and transmission shaft 4. On the other hand, when the hand wheel 6 is damaged, a wrench can be directly sleeved on the hexagonal head of the transmission shaft 4 to drive the transmission shaft 4 to rotate.

In the embodiment of the present invention, the bracket 1 is provided on the speed reducer for providing a mounting base, and the structure of the bracket 1 is exemplified as follows:

as shown in fig. 2, the bracket 1 comprises two vertical plates 101 which are parallel and opposite at intervals and a bottom plate 102 which is respectively connected with the two vertical plates 101, and two ends of the sleeve 2 are respectively connected with the two vertical plates 101; the base plate 102 is bolted to the speed increaser. So configured, the two risers 101 are spaced in parallel and opposed to each other so that the sleeve 2 is disposed between the two risers 101. The bottom plate 102 connects the two vertical plates 101 together to improve the stability, and is connected to the speed increaser through bolts, so that the support 1 can be conveniently mounted and dismounted.

The bottom plate 102 and the two risers 101 can be fixed by welding, and the sleeve 2 and the two risers 101 can be fixed by welding.

Further, the upper portion of the riser 101 is a trapezoidal structure, the lower portion is provided with an arc groove, the number of the bottom plates 102 is two, and the two bottom plates 102 are respectively located on two sides of the arc groove. With the arrangement, the bottom of the bracket 1 is provided with a gap, and the bracket does not interfere with other parts when being installed on the speed increaser. The upper portion of riser 101 is the trapezium structure, and sleeve 2 is located this trapezium position with riser 101's hookup location, through setting up the trapezium structure, can save material, can make riser 101's top transition gently again, avoids taking place to collide with.

Further, in order to improve the stability of the support 1, as shown in fig. 2, a reinforcing beam 103 is disposed between the riser 101 and the bottom plate 102.

It is noted that, in this document, relational terms such as "first" and "second," and the like, may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. In addition, "front", "rear", "left", "right", "upper" and "lower" in this document are referred to the placement states shown in the drawings.

Finally, it should be noted that: the above examples are only for illustrating the technical solutions of the present invention, and not for limiting the same; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.

Claims

1. A manual barring gear, comprising: the device comprises a bracket (1), a sleeve (2), a spline housing (3), a transmission shaft (4), a gear (5) and a hand wheel (6);

the bracket (1) is arranged on the speed increaser and used for providing a mounting base;

the sleeve (2) is arranged on the support (1), the inner wall of the sleeve (2) is an internal spline and is in fit engagement with an external spline of the spline housing (3), and a certain amount of eccentricity is formed between the center of the external spline of the spline housing (3) and the center of an inner hole;

the transmission shaft (4) is rotatably arranged in an inner hole of the spline housing (3) in a penetrating way, and two ends of the transmission shaft are positioned outside the spline housing (3);

the gear (5) is sleeved at one end of the transmission shaft (4) and is used for being meshed with a brake disc;

the hand wheel (6) is sleeved at the other end of the transmission shaft (4), and the diameter of the hand wheel (6) is larger than that of the gear (5);

the sleeve (2) is detachably connected with the spline sleeve (3), the gear (5) is detachably connected with the transmission shaft (4), and the hand wheel (6) is detachably connected with the transmission shaft (4);

the other end of transmission shaft (4) is the hexagon structure, hand wheel (6) installation hole is the hexagon structure with hexagon looks adaptation.

2. The manual barring gear according to claim 1 is characterized in that one end of the transmission shaft (4) is provided with a shaft shoulder (7) and the other end is provided with a detachable shaft end retaining ring (13), and two end faces of the spline housing (3) respectively abut against the shaft shoulder (7) and the shaft end retaining ring (13).

3. Hand barring device according to claim 2, characterized in that the transmission shaft (4) is sheathed with two self lubricating bushings (8).

4. The manual barring gear according to claim 2, wherein both ends of the sleeve (2) are respectively provided with a first baffle plate (9), the first baffle plates (9) cover part of the end face of the spline housing (3) and are connected with the bracket (1) through bolts, and the first baffle plates (9) can rotate around the bolts;

the gear (5) is connected with the transmission shaft (4) through a flat key (10), one side face of the gear (5) abuts against one shaft shoulder (7), the other side face of the gear abuts against a second baffle (11), and the second baffle (11) is fixed on one end face of the transmission shaft (4) through a bolt;

one side face of the hand wheel (6) is abutted to the hexagonal head machining end face of the transmission shaft (4), the other side face of the hand wheel is abutted to the third baffle (12), and the third baffle (12) is fixed to the other end face of the transmission shaft (4) through a bolt.

5. The hand barring device according to claim 1, characterized in that the bracket (1) comprises two parallel, spaced-apart and opposite risers (101) and a bottom plate (102) connected to the two risers (101), respectively, and the two ends of the sleeve (2) are connected to the two risers (101), respectively;

the base plate (102) is connected to the speed increaser through bolts.