阅读说明：本技术 一种双向盘车装置 (Bidirectional barring gear ) 是由 李宁波 于 2020-12-31 设计创作，主要内容包括：本发明涉及机械传动辅助技术领域,尤其涉及一种双向盘车装置。所述双向盘车装置用以辅助机组转子启动,所述双向盘车装置包括盘车驱动机构、调节机构和盘车输出轴,所述调节机构包括传动轴、滑动结合子和结合子,所述盘车驱动机构的输出端与所述传动轴的一端通过键槽传动连接,用以带动所述传动轴顺时针或逆时针转动；所述结合子与所述盘车输出轴的一端连接,所述盘车输出轴的另一端与所述机组转子连接；所述滑动结合子与所述传动轴的另一端通过键槽传动连接,且能与所述结合子啮合或分离。本发明只需通过滑动结合子和结合子的配合便可实现双向盘车以及机组启动完后机组转子和盘车驱动机构的脱离,结构简单,方便操作,且便于安装。(The invention relates to the technical field of mechanical transmission assistance, in particular to a bidirectional barring gear. The bidirectional barring device is used for assisting a unit rotor to start, the bidirectional barring device comprises a barring driving mechanism, an adjusting mechanism and a barring output shaft, the adjusting mechanism comprises a transmission shaft, a sliding connector and a connector, and the output end of the barring driving mechanism is in transmission connection with one end of the transmission shaft through a key slot and is used for driving the transmission shaft to rotate clockwise or anticlockwise; the combined rotor is connected with one end of the turning gear output shaft, and the other end of the turning gear output shaft is connected with the unit rotor; the sliding connector is in transmission connection with the other end of the transmission shaft through a key slot and can be meshed with or separated from the connector. The bidirectional barring gear can realize bidirectional barring and the separation of the rotor of the unit and the barring driving mechanism after the unit is started only by the matching of the sliding combiner and the combiner, and has the advantages of simple structure, convenience in operation and installation.)

1. A bidirectional barring device is used for assisting a unit rotor to start and is characterized by comprising a barring driving mechanism (1), an adjusting mechanism (2) and a barring output shaft (3), wherein the adjusting mechanism (2) comprises a transmission shaft (22), a sliding connector (24) and a connector (25), and the output end of the barring driving mechanism (1) is in transmission connection with one end of the transmission shaft (22) and used for driving the transmission shaft (22) to rotate clockwise or anticlockwise; the combiner (25) is connected with one end of the turning output shaft (3), and the other end of the turning output shaft (3) is connected with the unit rotor; the sliding connector (24) is connected with the other end of the transmission shaft (22) in a transmission way and can be engaged with or separated from the connector (25).

2. The bidirectional barring device according to claim 1, characterized in that said adjustment mechanism (2) further comprises a toggle assembly (26) for toggling said sliding coupling (24) to move axially to engage or disengage said coupling (25).

3. The bidirectional barring device according to claim 2, wherein the toggle assembly (26) comprises a toggle lever rotating shaft (264) and a toggle lever (265), the toggle lever rotating shaft (264) is rotatably disposed at one side of the sliding coupling (24), and an axis of the toggle lever rotating shaft (264) is perpendicular to an axis of the sliding coupling (24); the shifting lever (265) is fixedly connected to the shifting lever rotating shaft (264) and is matched with the sliding connector (24), and the shifting lever rotating shaft (264) can rotate to enable the shifting lever (265) to shift the sliding connector (24) to move axially.

4. The bidirectional barring device according to claim 3, wherein an annular groove (245) is formed in the sliding coupling (24), a protrusion (266) which is in clearance fit with the annular groove (245) is formed in the shift lever (265), the protrusion (266) can be inserted into the annular groove (245), and the protrusion (266) swings with the shift lever (265) to drive the sliding coupling (24) to move in the axial direction.

5. The bidirectional barring gear according to claim 3 or 4, wherein two said shift levers (265) are provided on said shift lever rotating shaft (264) at an interval.

6. The bidirectional barring gear according to claim 3, wherein the toggle assembly (26) further comprises a handle (262), the handle (262) being fixedly connected to the toggle rotation shaft (264), and toggling the handle (262) enables the toggle rotation shaft (264) to rotate.

7. The bidirectional barring gear according to claim 6, wherein the toggle assembly (26) further comprises an elastic member (261) and a swing link (263), and one end of the handle (262) is hinged to one end of the swing link (263); one end of the elastic element (261) is hinged with the handle (262), the other end of the elastic element is hinged with the other end of the swing rod (263), and the point where the handle (262) is connected with the deflector rod rotating shaft (264) is positioned between the hinged points where the handle (262) is respectively connected with the elastic element (261) and the swing rod (263).

8. The bidirectional barring gear according to claim 1, wherein the sliding coupling (24) is provided with a first driving surface (241) and a second driving surface (242) for driving the coupling (25) to rotate upon clockwise and counterclockwise rotation, respectively; the coupling (25) is provided with a first driven surface (251) and a second driven surface (252) which are respectively engaged with the first driving surface (241) and the second driving surface (242).

9. A bi-directional barring gear according to claim 8, characterised in that the sliding coupling (24) is provided with a first forward sliding surface (243) and a first reverse sliding surface (244), the coupling (25) is provided with a second forward sliding surface (253) and a second reverse sliding surface (254), the first forward sliding surface (243) and the second forward sliding surface (253) are capable of cooperating with each other, and the first reverse sliding surface (244) and the second reverse sliding surface (254) are capable of cooperating with each other for switching the engagement surfaces of the sliding coupling (24) and the coupling (25).

10. The bi-directional barring gear according to claim 9 wherein the first drive surface (241), the second drive surface (242), the first forward sliding surface (243) and the first reverse sliding surface (244) form a first mating surface, the end of the sliding connector (24) being provided with a plurality of the first mating surfaces; the first driven surface (251), the second driven surface (252), the second forward sliding surface (253), and the second reverse sliding surface (254) form a second mating surface, and a plurality of the second mating surfaces are provided at an end of the coupling member (25).

Technical Field

The invention relates to the technical field of mechanical transmission assistance, in particular to a bidirectional barring gear.

Background

With the continuous upgrade of equipment technology in China, units with large rotational inertia and large starting torque are applied more and more, the units are limited to the starting performance of a prime motor, a barring gear is often required to be configured to assist the starting of the units, or the units are maintained by the aid of the barring gear, and the barring gear is required to be separated from the units after the units are started, such as large-scale steam turbine generator units, compressor units and the like. Because of the requirement of bidirectional rotation of some unit rotors, a bidirectional barring gear is required to be matched with the unit rotors. However, the existing bidirectional barring gear needs not only a reversing control structure to realize the bidirectional but also a self-disengaging structure and a positioning component to be matched to separate the barring gear from the unit after the unit is started, so that the structure is complex, and the installation and the operation are inconvenient.

Disclosure of Invention

The invention aims to provide a bidirectional barring gear, which can realize bidirectional barring and separation of a unit rotor and a barring driving mechanism after a unit is started only by matching a sliding combiner with the combiner, and is simple in structure, convenient to operate and convenient to install.

In order to achieve the purpose, the invention adopts the following technical scheme:

a bidirectional barring device is used for assisting a unit rotor to start and comprises a barring driving mechanism, an adjusting mechanism and a barring output shaft, wherein the adjusting mechanism comprises a transmission shaft, a sliding connector and a connector, and the output end of the barring driving mechanism is in transmission connection with one end of the transmission shaft and used for driving the transmission shaft to rotate clockwise or anticlockwise; the combined rotor is connected with one end of the turning gear output shaft, and the other end of the turning gear output shaft is connected with the unit rotor; the sliding connector is in transmission connection with the other end of the transmission shaft and can be meshed with or separated from the connector.

Preferably, the adjusting mechanism further comprises a toggle assembly for toggling the sliding coupling to move axially to engage or disengage with the coupling.

Preferably, the shifting assembly comprises a shifting rod rotating shaft and a shifting rod, the shifting rod rotating shaft is rotatably placed on one side of the sliding combiner, and the axis of the shifting rod rotating shaft is perpendicular to the axis of the sliding combiner; the shifting lever is fixedly connected to the shifting lever rotating shaft and matched with the sliding combiner, and the shifting lever rotating shaft can rotate so that the shifting lever shifts the sliding combiner to move axially.

Preferably, an annular groove is formed in the sliding connector, a protrusion in clearance fit with the annular groove is formed in the shifting lever, the protrusion can be inserted into the annular groove, and the protrusion swings along with the shifting lever to drive the sliding connector to move axially.

Preferably, the deflector rod rotating shaft is provided with two deflector rods at intervals.

Preferably, the toggle assembly further comprises a handle, the handle is fixedly connected with the toggle rod rotating shaft, and the toggle assembly can rotate the toggle rod rotating shaft by toggling the handle.

Preferably, the toggle assembly further comprises an elastic piece and a swing rod, and one end of the handle is hinged with one end of the swing rod; one end of the elastic piece is hinged with the handle, the other end of the elastic piece is hinged with the other end of the swing rod, and the point where the handle is connected with the rotating shaft of the driving lever is located between the hinged points where the handle is respectively connected with the elastic piece and the swing rod.

Preferably, the sliding coupling is provided with a first driving surface and a second driving surface for driving the coupling to rotate when rotating clockwise and counterclockwise respectively; the coupling is provided with a first driven surface and a second driven surface which are respectively engaged with the first driving surface and the second driving surface.

Preferably, the sliding joint is provided with a first forward sliding surface and a first reverse sliding surface, the joint is provided with a second forward sliding surface and a second reverse sliding surface, the first forward sliding surface and the second forward sliding surface can be matched with each other, and the first reverse sliding surface and the second reverse sliding surface can be matched with each other, so as to realize the switching of the meshing surfaces of the sliding joint and the joint.

Preferably, the first driving surface, the second driving surface, the first forward sliding surface and the first reverse sliding surface form a first mating surface, and a plurality of the first mating surfaces are provided at an end of the sliding coupling; the first driven surface, the second forward sliding surface and the second backward sliding surface form a second mating surface, and a plurality of second mating surfaces are provided at an end of the coupling.

Has the advantages that: according to the bidirectional barring device, the transmission shaft is driven to rotate clockwise or anticlockwise through the barring driving mechanism, the sliding coupler on the transmission shaft drives the coupler meshed with the sliding coupler to rotate along with the transmission shaft, and then the unit rotor connected with the barring output shaft is driven to rotate to carry out barring. When the unit is started to a certain rotating speed, the rotating speed of the rotor of the unit is higher than that of the turning gear, namely the rotating speed of the output shaft of the turning gear is higher than that of the transmission shaft, the rotating speed difference enables the combiner and the sliding combiner to rotate relatively, the combiner generates axial acting force to force the sliding combiner to exit from the meshing position, namely the combiner and the sliding combiner are separated, then the turning gear driving mechanism stops driving, namely the turning gear can be stopped, and the unit is started smoothly. This two-way barring device only needs the cooperation through slip joint member and joint member alright realize two-way barring and unit start-up back unit rotor and barring actuating mechanism break away from, simple structure, convenient operation, and the installation of being convenient for.

Drawings

Fig. 1 is a schematic structural view of a bidirectional barring gear provided by the invention at one viewing angle;

FIG. 2 is a cross-sectional view of the bi-directional barring gear provided by the present invention;

FIG. 3 is a schematic view of the structure of a sliding connector and a connector-engageable portion provided in the present invention;

FIG. 4 is a schematic view of the structure of the sliding coupling member and the coupling member engaged with each other when the sliding coupling member is rotated clockwise, according to the present invention;

FIG. 5 is a schematic view showing a structure in which a sliding coupling member and a coupling member are engaged when rotating counterclockwise, according to the present invention;

FIG. 6 is a cross-sectional view of an adjustment mechanism provided by the present invention;

fig. 7 is a schematic structural diagram of the bidirectional barring gear provided by the invention at another view angle.

Wherein:

1. a barring drive mechanism; 11. a drive member; 12. a reduction gearbox;

2. an adjustment mechanism; 21. a housing; 22. a drive shaft; 23. a positioning ring; 24. a sliding binder; 241. a first drive face; 242. a second drive face; 243. a first slip plane; 244. a first counter-rotating sliding surface; 245. an annular groove;

25. a binder; 251. a first driven surface; 252. a second driven surface; 253. a second slip plane; 254. a second counter-rotating sliding surface;

26. the component is stirred; 261. an elastic member; 262. a handle; 263. a swing rod; 264. a deflector rod rotating shaft; 265. a deflector rod; 266. a protrusion;

3. turning gear output shaft.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Wherein the terms "first position" and "second position" are two different positions.

Unless expressly stated or limited otherwise, the terms "mounted," "connected," and "secured" are to be construed broadly and encompass, for example, both fixed and removable connections; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

Unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may include the first feature being in direct contact with the second feature, or may include the first feature being in direct contact with the second feature but being in contact with the second feature by another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

The technical scheme of the invention is further explained by the specific implementation mode in combination with the attached drawings.

As shown in fig. 1 and fig. 2, the present embodiment provides a bidirectional barring gear, which is used for assisting the start of a unit rotor, and includes a barring driving mechanism 1, an adjusting mechanism 2 and a barring output shaft 3, where the adjusting mechanism 2 includes a transmission shaft 22, a sliding coupler 24 and a coupler 25, an output end of the barring driving mechanism 1 is in transmission connection with one end of the transmission shaft 22, so as to drive the transmission shaft 22 to rotate clockwise or counterclockwise; the combiner 25 is connected with one end of the turning gear output shaft 3, and the other end of the turning gear output shaft 3 is connected with the unit rotor; the sliding coupling 24 is drivingly connected to the other end of the driving shaft 22 and can be engaged with or disengaged from the coupling 25.

When the barring driving mechanism 1 is used, the transmission shaft 22 is driven to rotate clockwise or anticlockwise, the sliding connector 24 on the transmission shaft 22 and the connector 25 meshed with the sliding connector 24 rotate together, and then the unit rotor connected with the barring output shaft 3 is driven to rotate to carry out barring. When the unit is started to a certain rotating speed, the rotating speed of the rotor of the unit is higher than the rotating speed of the turning gear, namely the rotating speed of the turning gear output shaft 3 is higher than the rotating speed of the transmission shaft 22, the rotating speed difference enables the combining member 25 and the sliding combining member 24 to rotate relatively, the combining member 25 generates an axial acting force to force the sliding combining member 24 to exit from the meshing position, namely the combining member 25 and the sliding combining member 24 are separated, then the turning gear can be stopped when the turning gear driving mechanism 1 stops driving, and the unit is started smoothly. This two-way barring device only needs the cooperation through slip binder 24 and binder 25 alright realize two-way barring and the unit starts breaking away from of back unit rotor and barring actuating mechanism 1, simple structure, convenient operation, and the installation of being convenient for.

It should be noted that the clockwise and counterclockwise rotations are the rotation directions of the turning gear output shaft 3 as viewed from the propeller shaft 22.

Illustratively, the drive shaft 22 may be a splined shaft.

In order to drive the transmission shaft 22 to rotate, the barring driving mechanism 1 comprises a driving part 11 and a reduction gearbox 12, one end of the reduction gearbox 12 is connected with the driving part 11, the other end of the reduction gearbox 12 is connected with the transmission shaft 22, and the reduction gearbox 12 can be used for reducing the rotating speed of the driving part 11 to the rotating speed required by a unit rotor so as to facilitate the unit starting and maintenance.

In this embodiment, in order to realize bidirectional barring, the driving member 11 is a motor capable of rotating forward and backward.

In this embodiment, the adjusting mechanism 2 further includes a positioning ring 23 and a housing 21 connected to the reduction gearbox 12, the positioning ring 23 is sleeved outside the transmission shaft 22, and one end of the positioning ring 23 abuts against the outer wall of the reduction gearbox 12; the positioning ring 23, the sliding coupler 24, the coupler 25 and the part of the transmission shaft 22 are all placed in the housing 21, and one end of the turning gear output shaft 3 is inserted into the housing 21.

As shown in fig. 3, the sliding coupling 24 is engaged with the coupling 25 in order to realize either clockwise rotation or counterclockwise rotation. The sliding coupling 24 is provided with a first driving surface 241 and a second driving surface 242 for driving the coupling 25 to rotate when rotating clockwise and counterclockwise, respectively; the coupling member 25 is provided with a first driven surface 251 and a second driven surface 252 which are engaged with the first driving surface 241 and the second driving surface 242, respectively.

Further, in order to realize the change of the rotation direction of the slide coupling 24 and the coupling 25, it is necessary to switch the engagement surfaces. The sliding coupling 24 is provided with a first forward sliding surface 243 and a first reverse sliding surface 244, the coupling 25 is provided with a second forward sliding surface 253 and a second reverse sliding surface 254, the first forward sliding surface 243 and the second forward sliding surface 253 can be matched with each other, the first reverse sliding surface 244 and the second reverse sliding surface 254 can be matched with each other, and the sliding coupling 24 can be separated from the coupling 25 when the rotation speed of the unit rotor exceeds the rotation speed of the transmission shaft 22.

Referring to fig. 4, when the transmission shaft 22 rotates clockwise and the rotational speed of the rotor of the unit is greater than the turning rotational speed, the coupling 25 and the sliding coupling 24 rotate relatively, and the generated rotational speed difference causes the coupling 25 to generate an axial force to force the first clockwise sliding surface 243 to slide along the second clockwise sliding surface 253 until the first clockwise sliding surface and the second clockwise sliding surface are separated, that is, the coupling 25 and the sliding coupling 24 are separated.

Referring to fig. 5, when the transmission shaft 22 rotates counterclockwise and the rotational speed of the unit rotor is greater than the turning rotational speed, the coupling 25 and the sliding coupling 24 rotate relatively, and the generated rotational speed difference causes the coupling 25 to generate an axial force to force the first counter-rotating sliding surface 244 to slide along the second counter-rotating sliding surface 254 until the first counter-rotating sliding surface and the sliding coupling 244 are separated, that is, the coupling 25 and the sliding coupling 24 are separated.

In this embodiment, in order to make the sliding connector 24 and the connector 25 more firmly engaged and more efficiently transmitted, the first driving surface 241, the second driving surface 242, the first forward-rotation sliding surface 243 and the first reverse-rotation sliding surface 244 form a first mating surface, and the end of the sliding connector 24 is provided with a plurality of first mating surfaces; the first driven surface 251, the second driven surface 252, the second forward sliding surface 253, and the second reverse sliding surface 254 form a second mating surface, and a plurality of second mating surfaces are provided at the end of the coupling 25.

As shown in fig. 6, the adjusting mechanism 2 further includes a toggle assembly 26 for toggling the sliding connector 24 to move axially, so that the connector 25 and the sliding connector 24 can be engaged or disengaged at all times. The adjusting assembly 26 includes a shift lever rotating shaft 264 and a shift lever 265 arranged in the housing 21, the shift lever rotating shaft 264 is rotatably arranged at one side of the sliding connector 24, and the axis of the shift lever rotating shaft 264 is perpendicular to the axis of the sliding connector 24; the shift lever 265 is fixedly connected to the shift lever rotating shaft 264 and is matched with the sliding connector 24, and the shift lever rotating shaft 264 can rotate to enable the shift lever 265 to shift the sliding connector 24 to move axially.

Specifically, the sliding coupling 24 is provided with an annular groove 245, the shift lever 265 is provided with a protrusion 266 which is in clearance fit with the annular groove 245, the protrusion 266 can be inserted into the annular groove 245, and the protrusion 266 swings with the shift lever 265 to drive the sliding coupling 24 to move axially.

When the lever rotating shaft 264 rotates, it can drive the lever 265 to rotate, since the protrusion 266 is inserted into the annular groove 245 of the sliding coupling 24 and the sliding coupling 24 can slide on the transmission shaft 22, i.e. the sliding can push the sliding coupling 24 to move in the axial direction of the transmission shaft 22.

Further, in order to ensure that the pushing force caused by the sliding of the sliding connector 24 is uniform, two shift levers 265 are disposed on the shift lever rotating shaft 264 at intervals.

In this embodiment, the two shift levers 265 are symmetrically arranged along the axial direction perpendicular to the sliding connector 24, so as to further ensure the uniform stress on the sliding connector 24.

To facilitate controlling the rotation of the toggle lever shaft 264, the toggle assembly 26 further includes a handle 262, the handle 262 is fixedly connected to the toggle lever shaft 264, and the toggle handle 262 can rotate the toggle lever shaft 264.

Referring to fig. 7, in the present embodiment, the toggle assembly 26 further includes an elastic member 261 and a swinging rod 263, wherein one end of the handle 262 is hinged to one end of the swinging rod 263; one end of the elastic member 261 is hinged to the handle 262, and the other end is hinged to the other end of the swing lever 263, and the point at which the handle 262 is connected to the lever rotating shaft 264 is located between the hinge points at which the handle 262 is connected to the elastic member 261 and the swing lever 263, respectively, thereby ensuring the stability of the state in which the sliding coupling 24 and the coupling 25 are engaged or disengaged.

Illustratively, the elastic member 261 is a spring.

When the sliding connector 24 is engaged with the connector 25, the sliding connector 24 and the connector 25 can be engaged firmly because the elastic member 261 is in a compressed state; when the rotation speed of the connector 25 is greater than that of the sliding connector 24, on one hand, the sliding connector 24 slides relative to the connector 25 due to the generated rotation speed difference, and on the other hand, the elastic force generated by the compression of the elastic member 261 enables the protrusion 266 to drive the sliding connector 24 to be separated from the connector 25 rapidly until the elastic member 261 is in a non-elastic deformation state.

The working process of the bidirectional barring gear provided by the embodiment is as follows: the handle 262 is shifted to make the rotating shaft 264 of the shifting lever drive the shifting lever 265 to rotate until the sliding connector 24 and the connector 25 are firmly meshed, the driving mechanism drives the transmission shaft 22 to rotate clockwise or anticlockwise, the sliding connector 24 on the transmission shaft 22 and the connector 25 meshed with the sliding connector 24 rotate together, and then the unit rotor on the barring output shaft 3 is driven to rotate to carry out barring. When the unit is started to a certain rotating speed, the rotating speed of the rotor of the unit is higher than the turning rotating speed, namely the rotating speed of the turning output shaft 3 is higher than the rotating speed 22 of the transmission shaft 22, the rotating speed difference enables the combining member 25 and the sliding combining member 24 to rotate relatively, the axial acting force of the combining member 25 and the resilience force of the elastic member 261 force the sliding combining member 24 to be separated from the combining member 25 quickly, then the turning driving mechanism 1 stops driving, the turning can be stopped, and the unit is started smoothly.

The above description is only a preferred embodiment of the present invention, and for those skilled in the art, the present invention should not be limited by the description of the present invention, which should be interpreted as a limitation.