Starting device for alternative thrust acceleration

Abstract

The utility model relates to an alternative thrust acceleration starting device, which comprises a main shaft, a plurality of thrust acceleration starting devices, a plurality of thrust acceleration starting devices, a plurality of thrust acceleration starting devices and a plurality of thrust acceleration starting devices, the starting mechanism comprises a starting power source; the multiple sets of starting mechanisms correspond to the one-way bearings in a one-to-one mode, and at least two sets of starting mechanisms push the main shaft to rotate in a relay mode. The starting power source does reciprocating motion of stretching and retracting, when the starting power source stretches out, the one-way bearing drives the main shaft to rotate synchronously, and when the starting power source retracts, the one-way bearing rotates relative to the main shaft. The utility model provides a starting device for alternative thrust acceleration, the main shaft is driven to rotate by utilizing two groups of starting mechanisms and adopting a relay pushing mode, so that the stroke to a starting power source is halved, and the volume is reduced.

Description

Technical Field

[0001] The utility model relates to the field of power output devices, in particular to an alternating thrust speed-up starting device. Background Art

[0002] The rotor of the generator rotates in the stator driven by an external force (such as a turbine, a steam turbine, a diesel engine, etc.), cutting the magnetic lines of force, thereby generating an induced potential, which is led out through the terminal and connected to the circuit to generate current. For large generators, a large drive device is needed to generate high-torque power to maintain the rotation of the rotor. Due to the effect of inertia, the torque required for the rotor startup phase and the normal operation phase is different. A low-torque drive device is difficult to drive the rotor to start and enter the normal operation phase. When the rotor is operating normally, a high-torque drive device consumes more energy to maintain the operation of the drive device, resulting in a waste of resources. Among them, in order to increase the speed of the rotor, the power mechanism is currently used to continuously drive the rotor to rotate. As the rotor speed increases, the load of the power mechanism gradually decreases, but the power is maintained at a large level, resulting in a waste of energy. In addition, the current drive device has a complex structure and a large volume. Utility Model Content

[0003] In order to solve the above problems, the present technical solution provides a starting device for alternating thrust speed-up.

[0004] To achieve the above purpose, the technical solution is as follows:

[0005] The starting device of the alternating thrust speed-up includes:

[0006] A main shaft, on which a plurality of one-way bearings are provided;

[0007] A starting mechanism, which includes a starting power source;

[0008] Multiple groups of the starting mechanisms are arranged one-to-one correspondingly to the one-way bearings, and at least two groups of the starting mechanisms relay to drive the main shaft to rotate;

[0009] The starting power source performs a reciprocating motion of extending and retracting. When the starting power source is extended, the one-way bearing drives the main shaft to rotate synchronously. When the starting power source is retracted, the one-way bearing rotates relative to the main shaft.

[0010] As described above, the alternating thrust-accelerated starting device, the starting mechanism also includes a connecting component arranged between the output end of the starting power source and the one-way bearing, and the connecting component is used to convert the linear motion of the starting power source into a reciprocating motion that drives the one-way bearing to rotate back and forth.

[0011] In the alternating thrust-accelerated starting device as described above, the connecting assembly includes a swing arm, one end of which is hinged to the one-way bearing wheel, and the other end of which is hinged to the output end of the starting power source.

[0012] The alternating thrust-accelerated starting device as described above further comprises a base frame, and an articulated seat for swinging is provided between the base frame and the starting power source.

[0013] As described above, in the alternating thrust speed-up starting device, the one-way bearing rotates back and forth by an amplitude of °.

[0014] In the above-mentioned alternating thrust speed-up starting device, counterweight wheels are respectively provided at both ends of the main shaft.

[0015] In the alternating thrust speed-up starting device as described above, the one-way bearing comprises a first half bearing and a second half bearing for fitting on the main shaft, and a locking block for locking the first half bearing and the second half bearing.

[0016] In the alternating thrust speed-up starting device as described above, the starting power source is an electric push cylinder, a hydraulic push cylinder or a pneumatic push cylinder.

[0017] As described above, in the alternating thrust acceleration starting device, the starting interval time difference between the two starting mechanisms is less than or equal to the extension time of the starting mechanisms.

[0018] As described above, in the alternating thrust-accelerated starting device, the extension stroke L of the starting power source is 0-2000 mm, the extension speed S is 0-2500 mm / s, and the extension time T=L / S.

[0019] The beneficial effects of this application are:

[0020] The utility model provides an alternating thrust speed-up starting device, which utilizes two sets of starting mechanisms and drives the main shaft to rotate in a relay-pushing manner, so that the stroke of the starting power source is halved, thereby reducing the volume. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model, the following briefly introduces the drawings required for describing the embodiments.

[0022] Figure 1 It is a structural schematic diagram of the utility model;

[0023] Figure 2 yes Figure 1 A top view of

[0024] Figure 3 It is a structural diagram of a one-way bearing;

[0025] Figure 4 It is a structural diagram of the transmission gear. DETAILED DESCRIPTION

[0026] In order to make the technical problems, technical solutions and beneficial effects solved by the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0027] The starting device of the alternating thrust speed-up includes:

[0028] A main shaft 11, on which a plurality of one-way bearings 12 are provided;

[0029] A starting mechanism 21, which includes a starting power source 22;

[0030] Multiple groups of the starting mechanisms 21 are arranged one by one corresponding to the one-way bearings 12, and at least two groups of the starting mechanisms 21 relay to drive the main shaft 11 to rotate;

[0031] The starting power source 22 performs a reciprocating motion of extending and retracting. When the starting power source 22 is extended, the one-way bearing 12 drives the main shaft 11 to rotate synchronously. When the starting power source 22 is retracted, the one-way bearing 12 rotates relative to the main shaft 11.

[0032] The utility model provides an alternating thrust speed-up starting device, which utilizes two sets of starting mechanisms and drives the main shaft to rotate in a relay-pushing manner, so that the stroke of the starting power source is halved, thereby reducing the volume.

[0033] Further, as a preferred embodiment of the present invention but not limiting, the starting mechanism 21 further includes a connecting assembly 23 disposed between the output end of the starting power source 22 and the one-way bearing 12, and the connecting assembly 23 is used to convert the linear motion of the starting power source 22 into a reciprocating motion that drives the one-way bearing 12 to rotate back and forth. The connecting assembly can use a crank slider mechanism, a gear connecting rod mechanism, a swing connecting rod mechanism, a slider-connecting rod mechanism, etc. to achieve motion conversion.

[0034] Further, as a preferred embodiment of the present invention but not limiting, the connecting assembly 23 includes a swing arm 231, one end of the swing arm 231 is hinged to the one-way bearing 12, and the other end is hinged to the output end of the starting power source 22. When the starting power source is extended, it pushes the swing arm, and the swing arm rotates around the one-way bearing, thereby driving the main shaft to rotate.

[0035] Furthermore, as a preferred embodiment of the present invention but not limiting, it further comprises a base frame 6, and an articulated seat 7 for swinging of the base frame 6 and the starting power source 22 is provided between the base frame 6 and the starting power source 22. The articulated seat supports the swinging of the starting power source.

[0036] Further, as a preferred embodiment of the present invention but not a limitation, the one-way bearing 12 rotates back and forth by 120°. The one-way bearing rotates by 360° in total, which is divided into three parts. The first part is driven by a starting power source for 120°, the second part is driven by another starting power source for 120°, and the third part can temporarily stop being stressed. The gaps between the three parts are driven by the two starting power sources in turn, which can effectively prevent metal fatigue.

[0037] Further, as a preferred embodiment of the present invention but not limiting, a counterweight wheel 14 is provided at both ends of the main shaft 11. In this embodiment, the weight of the counterweight wheel is 2 tons, totaling 4 tons. The starting device needs 1-2 hours to increase the speed of the counterweight wheel, that is, the main shaft to a preset speed range, so that the counterweight wheel has inertia. The weight range of the counterweight wheel is 0-20000kg.

[0038] Further, as a preferred embodiment of the present invention but not limiting, the one-way bearing 12 includes a first half bearing 121 and a second half bearing 122 for fitting on the main shaft 11, and a locking block 123 for locking the first half bearing 121 and the second half bearing 122. The main shaft is relatively long, and with the current machining accuracy, it is difficult for an ordinary one-way bearing to be fitted into a desired position, so the first half bearing and the second half bearing need to be fitted.

[0039] Further, as a preferred embodiment of the present invention but not limiting, the transmission gear 13 includes a first half gear 131 and a second half gear 132 for fitting on the main shaft 11, and a locking block 123 for locking the first half gear 131 and the second half gear 132. The main shaft is relatively long, and with the current machining accuracy, it is difficult for an ordinary transmission gear to fit into a desired position, so it is necessary to fit the first half gear and the second half gear.

[0040] Further, as a preferred implementation of the present solution but not limiting, the starting power source 22 is an electric push cylinder, a hydraulic push cylinder, or a pneumatic push cylinder.

[0041] Further, as a preferred implementation of the present solution but not limiting, the start interval time difference between the two start mechanisms 21 is less than or equal to the extension time of the start mechanism 21. This can prevent the spindle from losing speed.

[0042] Further, as a preferred embodiment of the present invention but not limiting, the extension stroke L of the starting power source 22 is 0-2000 mm, the extension speed S is 0-2500 mm / s, the extension time T=L / S, and the load is 0-20000 kg.

[0043] Further, as a preferred implementation of the present solution but not a limitation, the extension stroke of the starting power source 22 is 300 mm, the extension speed is 500 mm / s, and the extension time is 0.6 s.

[0044] The above description is only a preferred embodiment of the present application and is not intended to limit the scope of implementation of the present application. Other principles and basic structures that are the same or similar to those of the present application are within the protection scope of the present application.

Claims

1. The starting device of alternating thrust speed-up is characterized by: include A main shaft (11) on which a plurality of one-way bearings (12) are arranged; A starting mechanism (21), comprising a starting power source (22); A plurality of groups of the starting mechanisms (21) are arranged in one-to-one correspondence with the one-way bearings (12), and at least two groups of the starting mechanisms (21) relay to drive the main shaft (11) to rotate; The starting power source (22) performs a reciprocating motion of extending and retracting. When the starting power source (22) is extended, the one-way bearing (12) drives the main shaft (11) to rotate synchronously. When the starting power source (22) is retracted, the one-way bearing (12) rotates relative to the main shaft (11).

2. The alternating thrust speed-up starting device according to claim 1, characterized in that: The starting mechanism (21) further comprises a connecting assembly (23) arranged between the output end of the starting power source (22) and the one-way bearing (12), wherein the connecting assembly (23) is used to convert the linear motion of the starting power source (22) into a reciprocating motion that drives the one-way bearing (12) to rotate back and forth.

3. The alternating thrust speed-up starting device according to claim 2, characterized in that: The connecting assembly (23) comprises a swing arm (231), one end of which is hinged to the one-way bearing (12) wheel, and the other end of which is hinged to the output end of the starting power source (22).

4. The alternating thrust speed-up starting device according to claim 3, characterized in that: It also comprises a base frame (6), and a hinge seat (7) for swinging is arranged between the base frame (6) and the starting power source (22).

5. The alternating thrust speed-up starting device according to claim 1, characterized in that: The one-way bearing (12) has a back-and-forth rotation range of 120°.

6. The alternating thrust speed-up starting device according to claim 3, characterized in that: Counterweight wheels (14) are respectively provided at both ends of the main shaft (11).

7. The alternating thrust speed-up starting device according to claim 3, characterized in that: The one-way bearing (12) comprises a first half bearing (121) and a second half bearing (122) for fitting on the main shaft (11), and a locking block (123) for locking the first half bearing (121) and the second half bearing (122).

8. The alternating thrust speed-up starting device according to claim 1, characterized in that: The starting power source (22) is an electric push cylinder, a hydraulic push cylinder or a pneumatic push cylinder.

9. The alternating thrust speed-up starting device according to claim 1, characterized in that: The start-up interval time difference between the two start-up mechanisms (21) is less than or equal to the extension time of the start-up mechanisms (21).

10. The alternating thrust speed-up starting device according to claim 9, characterized in that: The extension stroke L of the starting power source (22) is 0-2000 mm, the extension speed S is 0-2500 mm / s, and the extension time T=L / S.

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