CN104715943B - Disengagement and engagement mechanism for energy storage device and gas-insulated breaker comprising disengagement and engagement mechanism - Google Patents

Abstract

The invention relates to a clutch mechanism for an energy storage device, which comprises a loading gear, a driving gear, two bearings and a gear shaft including a gear part and a clutch part. The gear shaft includes several cylinders, several clutch levers corresponding to the cylinders, several first elastic elements, and a push rod and a second elastic element located in the cavity of the gear shaft. The push rod includes a clutch groove and can slide axially. A pressing block is fixed on the driving gear, and the pressing block can push the push rod to slide axially, thereby unlocking or locking the bush and the gear shaft. The invention also relates to a gas insulated circuit breaker using such a clutch mechanism. The clutch mechanism and the gas insulated circuit breaker of the present invention realize simple and reliable mechanical separation between the power device and the energy storage device when the energy storage is completed at a relatively low cost.

Description

A clutch mechanism for energy storage device and its gas-insulated circuit breaker

technical field

The invention relates to a clutch mechanism, in particular to a clutch mechanism for an energy storage device. In addition, the present invention also relates to a gas insulated circuit breaker using such a clutch mechanism.

Background technique

Various energy storage devices must cooperate with the clutch mechanism to accumulate energy and release energy when needed. These energy storage devices may, for example, use springs to accumulate potential energy, and when the energy accumulation is completed, the clutch mechanism is in a state capable of bidirectional rotation to release energy.

A variety of existing gas-insulated circuit breakers for high-voltage power transmission use an energy storage device and a clutch mechanism that cooperates with it. The clutch mechanism can only rotate in one direction so that the energy storage device can accumulate and store energy. When the clutch mechanism is in the state of being able to rotate in both directions, the power device will be mechanically separated from the energy storage device, and then the energy accumulated in the energy storage device will be released, thereby converting the potential energy stored in the energy storage device into kinetic energy. Push the operating mechanism in the gas insulated circuit breaker to open or close the circuit connected to the gas insulated circuit breaker. An existing clutch mechanism adopts the form of a ratchet mechanism, wherein the ratchet and the pawl cooperate with each other, and the ratchet can only rotate in one direction with the accumulation of energy under the condition that the ratchet can only rotate in one direction, so the accumulated energy will not be lost . When the energy storage device completes the energy accumulation, the pawl and an arc surface on the ratchet wheel realize the mechanical separation of the power device and the energy storage device, and release energy when needed.

Korean patent KR100841649B1 discloses a switch cabinet handcart for medium-voltage power distribution, in which a clutch mechanism is used in order to switch between two different modes of manual operation of the handcart and electric operation of the handcart. The clutch mechanism includes a driving gear, a driven gear and a screw rod, wherein the switching unit can transmit the torque of the driven gear to the screw rod or isolate the transmission of the torque of the driven gear to the screw rod. The switching unit comprises a clutch lever arranged in the handle insertion opening, a clutch ball and elastic components arranged in the ball insertion opening.

Contents of the invention

The present invention provides a clutch mechanism for an energy storage device, comprising a loading gear, a driving gear, two bearings, and a gear shaft including a gear part and a clutch part, wherein the loading gear communicates with the The clutch part is coaxially connected with bidirectional rotation, and the drive gear is externally meshed with the gear part. The gear shaft includes several cylinders, several clutch levers corresponding to the cylinders, several first elastic elements, and a push rod and a second elastic element located in the cavity of the gear shaft, wherein The clutch part has several limiting grooves corresponding to the cylinder along the circumferential direction, and the cylinder is located in the limiting grooves. The clutch rod movably passes through the wall of the clutch part, one end of the first elastic element is fixed to the clutch part, and the other end presses the clutch rod. The push rod includes a clutch groove and can slide axially, wherein the second elastic element engages with one end of the push rod and presses the push rod. A pressing block is fixed on the driving gear, and the pressing block can contact the other end of the push rod and push the push rod to slide axially. When the pressure block pushes the push rod, the push rod pushes the cylinder into the bottom of the limiting groove through the clutch rod, so that the loading gear and the gear shaft can rotate bidirectionally. When the pressure block disengages from the push rod, the first elastic element pushes the clutch lever radially toward the axis of the gear shaft, so that the loading gear and the gear shaft can only rotate in one direction . The clutch mechanism of the present invention realizes simple and reliable mechanical separation between the power device and the energy storage device when the energy storage is completed at a relatively low cost.

According to one aspect of the present invention, the first elastic element is an elastic metal ring.

According to another aspect of the present invention, the clutch mechanism further includes several pins corresponding to the first elastic element, the pins are located at the clutch part and fixed between the two ends of the first elastic element away from the One side of the axis of the gear shaft, so that the first elastic element is elastically deformed when the clutch lever pushes the cylinder.

According to another aspect of the present invention, the clutch mechanism further includes several third elastic elements corresponding to the cylinder, and the third elastic elements are installed on the side of the limiting groove opposite to the clutch lever , and is used to push the cylinder so that it can be clamped between the loading gear and the gear shaft.

According to yet another aspect of the present invention, the pressing block includes an inclined surface capable of contacting the push rod.

According to yet another aspect of the present invention, the limiting groove is a "V"-shaped groove.

According to still another aspect of the present invention, the end of the clutch lever in contact with the push rod has a slope, so that the clutch lever can leave or enter the clutch groove when the push rod slides in the axial direction.

According to still another aspect of the present invention, the side of the clutch groove in contact with the clutch lever has a slope, so that the clutch lever can leave or enter the clutch groove when the push rod slides in the axial direction.

According to still another aspect of the present invention, the push rod has a guide sleeve between its end in contact with the pressure block and the gear shaft.

The present invention also provides a gas insulated circuit breaker, including a power device, an operating device, an energy storage device, and the clutch mechanism according to any one of the above claims, wherein the loading gear is connected to the power device, and the driving gear is connected to the power storage device. The energy device is connected, and the gear shaft is connected with the operating device. The gas insulated circuit breaker of the present invention realizes simple and reliable mechanical separation between the power device and the energy storage device when the energy storage is completed at a relatively low cost due to the adoption of the clutch mechanism.

In the following, preferred embodiments will be described in a clear and understandable manner with reference to the accompanying drawings, and the above-mentioned characteristics, technical features, advantages and implementation methods of the present invention will be further described.

Description of drawings

The following drawings are only intended to illustrate and explain the present invention schematically, and do not limit the scope of the present invention. in,

Figure 1 schematically shows a perspective view of the clutch mechanism of the present invention when the energy storage device is released and can only rotate in one direction;

Figure 2 schematically shows a perspective view of the clutch mechanism of the present invention when the energy storage device is released at the moment or when the accumulated energy is completed and can rotate in both directions;

Figure 3 schematically shows a perspective view of the interconnected loading gear and gear shaft;

Fig. 4 schematically shows an axial sectional view and a radial sectional view B-B of the loading gear and the gear shaft of Fig. 3 in the bidirectionally rotatable state of Fig. 2;

Fig. 5 schematically shows the axial sectional view and the radial sectional view B-B of the loading gear and the gear shaft of Fig. 3 in the state of only one-way rotation in Fig. 1;

Figure 6 schematically shows a compact with a bevel.

Explanation of main device symbols

21 Push rod 25 Loading gear

22 Drive gear 26 Pressure block

23 Bearing 261 Ramp

24 Gear shaft 28 Cylinder

241 Gear part 242 Clutch part

243 Limiting groove 20 Second elastic element

29 Clutch lever 31 Third elastic element

30 The first elastic element 33, 244 holes

211 Clutch groove 212 Guide sleeve

27 block

detailed description

In order to have a clearer understanding of the technical features, purposes and effects of the present invention, the specific implementation manners of the present invention will now be described with reference to the accompanying drawings. In the figures, the same reference numerals represent components with the same or similar structure but the same function, and among the components with the same structure or function, only one of them is schematically depicted, or only one of them is marked. In order to make the drawing concise, the drawing only schematically shows the parts related to the present invention, and they do not represent the actual structure of the product. "Connection" or "fixation" herein means direct "connection" or "fixation", or "connection" or "fixation" via a third party.

As shown in Figures 1 to 5, a clutch mechanism for an energy storage device includes a loading gear 25, a driving gear 22, two bearings 23 (such as deep groove ball bearings, etc.) and a gear part 241 and a clutch part. 242 gear shaft 24, wherein the loading gear 25 is coaxially connected with the clutch part 242 through the bearing 23 so as to be bidirectionally rotatable, and the driving gear 22 is externally meshed with the gear part 241. The gear shaft 24 includes five cylinders 28, five clutch levers 29 corresponding to the cylinders 28, and five first elastic elements 30, as well as a push rod 21 and a second elastic element 20 located in the cavity of the gear shaft 24 , wherein the clutch part 242 has five "V"-shaped limiting grooves 243 corresponding to the cylinder 28 in the circumferential direction, and the cylinder 28 is located in the "V"-shaped groove. Those skilled in the art will understand that although the illustrated embodiment uses five cylinders, it is also possible to use less than or more than five cylinders and corresponding clutch rods, first elastic elements and stop slots as required. Yes, as long as the quantity selection can meet the design requirements. In addition, limiting grooves of other shapes than the "V" shape, such as trapezoidal grooves with slopes, may also be used. The clutch rod 29 can move through the wall of the clutch part 242 , one end of the first elastic element 30 is fixed to the clutch part 242 through the hole 33 on the clutch part 242 , and the other end presses the clutch rod 29 . The clutch mechanism may further include five pins 32 corresponding to the first elastic member 30 . The pin 32 is located at the clutch part 242 and installed axially between the two ends of the first elastic element 30 on the side away from the axis of the gear shaft 24 , so that the first elastic element 30 elastically deforms when the clutch lever 29 pushes the cylinder 28 . Those skilled in the art will understand that the pin 32 is not necessary when one end of the first elastic member 30 is non-rotatably fixed in the hole 26 , but the installation of the pin 32 is beneficial to enhance the effect of squeezing the clutch lever 29 . Those skilled in the art will also understand that the first elastic element 30 may be an elastic metal ring, but may also be other known metal or non-metal components. Various parameters of the "V"-shaped limiting groove 243 can be selected by those skilled in the art according to the design requirements of the existing overrunning clutch. In the present invention, the junction of the gear portion 241 and the clutch portion 242 does not only refer to the boundary between the two, but also includes a position close to the boundary. Those skilled in the art will understand. "Axial", "radial" and "circumferential" in the present invention refer to the direction of each component relative to the axis of the gear shaft 24 after the clutch mechanism is assembled, and "axis" refers to the axis of the gear shaft 24.

The push rod 21 includes a clutch groove 211 and can slide axially, wherein the second elastic element 20 engages with one end of the push rod 21 and presses the push rod 21 . The second elastic element 20 can be fixed in the cavity of the gear shaft 24 through a plug 27 as shown in FIGS. 4 and 5 , or can be fixed through other not-shown limiting members. The driving gear 22 is fixed with a pressure block 26 , and the inclined surface 261 of the pressure block 26 can contact the other end of the push rod 21 and push the push rod 21 to slide axially. When energy storage is completed, the pressure block 26 turns to the position shown in FIGS. 2 and 4 and pushes the push rod 21 . During this process, the push rod 21 slides axially so that one end of the clutch rod 29 radially leaves the clutch groove 211 , while the other end extends into the limiting groove 243 , thereby pushing the cylinder 28 into the bottom of the limiting groove 243 . The cylinder 28 at the bottom of the limiting groove 243 can break away from the mechanical contact with the loading gear 25 in two directions (clockwise and counterclockwise) as shown in the cross-sectional view B-B in FIG. 4 , and will not be clamped on the loading gear. 25 and the gear shaft 24, so that the loading gear 25 and the gear shaft 24 can rotate bidirectionally. At this moment, the clutch lever 29 presses the first elastic element 30 to make it elastically deform. At the same time, the cylinder 28 presses the third elastic element 31, wherein the third elastic element 31 can be a combination of a spring and a pin (not shown) or a spring as shown in Figures 4 and 5, and the third elastic element 31 One end is installed in a hole 244 (two holes 244 are shown in FIGS. 4 and 5 , each hole 244 corresponds to a third elastic element 31 ). During this process, the stored energy can be released for operation. During the energy release process, the driving gear 22 and the pressure block 26 rotate synchronously, and the driving gear 22 will drive the gear shaft 24 to rotate clockwise (as shown in the sectional view B-B of FIG. 4 ). Since the loading gear 25 is stationary at this time, the cylinder 28 cannot be clamped between the loading gear 25 and the gear shaft 24, and the gear shaft 24 will continue to rotate until the entire energy release is completed, and finally impels the operating device to close the circuit .

When the pressure block 26 fixed on the drive gear 22 turns over a proper angle, the pressure block 26 will break away from the push rod 21, and at this time, the push rod 21 slides axially to a proper position under the action of the second elastic element 20 and resets, while the first An elastic element 30 presses the clutch lever 29 radially toward the axis, so that the cylinder 28 returns to the clutch groove 211 as shown in the sectional view B-B of FIG. 5 . During this process, the third elastic element 31 located on the side of the limiting groove 243 opposite to the clutch lever 29 pushes the cylinder 28 away from the bottom of the limiting groove 243 . At this time, if the loading gear 25 rotates clockwise with respect to the gear shaft 24 around the sectional view B-B in FIG. Locked against rotation. Those skilled in the art will understand that the position and size of the pressure block 26 fixed on the driving gear 22 can be selected according to the requirements of design parameters. The clutch mechanism and the gas insulated circuit breaker thereof of the present invention realize simple and reliable mechanical separation between the power device and the energy storage device when the energy storage is completed at relatively low cost. One end of the clutch lever 29 in contact with the push rod 21 or the side of the clutch groove 211 in contact with the clutch lever 29 or both have a slope at the same time, so that the clutch lever 29 can leave or enter the clutch groove when the push rod 21 slides axially 211. The inclined surface facilitates the relative movement between the clutch lever 29 and the clutch groove 211 . In addition, the push rod 21 has a guide sleeve 212 between its end in contact with the pressure block 26 and the gear shaft 24 . The guide sleeve facilitates the guiding of the push rod 21 . Those skilled in the art will also understand that the transmission ratio of the drive gear 22 and the gear portion 241 can be selected accordingly according to various actual parameters of the power device, the operating device and the energy storage device, and the first elastic element 20 is preferably a spring , but can also be other elements that can engage and squeeze the push rod 21. As shown in FIG. 6 , the pressing block 26 includes an inclined surface 261 capable of contacting the push rod 21 , so as to facilitate smooth contact between the pressing block 26 and the push rod 21 .

According to an embodiment that is not shown, the gas insulated circuit breaker of the present invention includes a power device, an operating device, an energy storage device and the above-mentioned clutch mechanism, wherein the loading gear 25 is connected to the power device, and the driving gear 22 is connected to the energy storage device , and the gear shaft 24 is connected with the operating device. After the energy accumulated by the energy storage device is released, the clutch mechanism is in the locking position shown in FIGS. on the inner wall of the cavity. During this process, the clutch lever 29 slides radially toward the axis, and the loading gear 25 and the gear shaft 24 can only rotate in one direction. At this time, using a power source such as a motor to rotate the loading gear 25 will drive the gear shaft 24 to rotate synchronously, and then convert kinetic energy into potential energy in the energy storage device connected to the driving gear 22, wherein the design of only one-way rotation ensures Stored energy is not released during loading. Simultaneously, the driving gear 22 will also rotate synchronously due to meshing with the gear part 241 , and the pressure block 26 will also rotate synchronously due to being fixed on the driving gear 22 .

It should be understood that although this specification is described according to various implementations, not each implementation only includes an independent technical solution. This description of the specification is only for clarity, and those skilled in the art should take the specification as a whole , the technical solutions in the various embodiments can also be properly combined to form other embodiments that can be understood by those skilled in the art.

In this article, "schematic" means "serving as an example, example or illustration", and any illustration or implementation described as "schematic" should not be interpreted as a more preferred or more advantageous Technical solutions.

The above descriptions are only illustrative specific implementations of the present invention, and are not intended to limit the scope of the present invention. Any equivalent changes, modifications and combinations made by those skilled in the art without departing from the concept and principle of the present invention shall fall within the protection scope of the present invention.

Claims (10)

1. A clutch mechanism for an energy storage device, comprising a loading gear (25), a drive gear (22), two bearings (23) and a gear comprising a gear portion (241) and a clutch portion (242) Shaft (24), wherein the loading gear (25) is bidirectionally rotatably coaxially connected with the clutch portion (242) through the bearing (23), and the drive gear (22) is connected with the gear portion ( 241) external engagement; The gear shaft (24) includes several cylinders (28), several clutch levers (29) corresponding to the cylinders (28), and several first elastic elements (30) and located at the gear shaft ( 24) a push rod (21) and a second elastic element (20) in the cavity, wherein the clutch part (242) has several limit grooves corresponding to the cylinder (28) in the circumferential direction (243), the cylinder (28) is located in the limiting groove (243), the clutch rod (29) can move through the wall of the clutch part (242), the first elastic element One end of (30) is fixed to the clutch part (242), and the other end squeezes the clutch lever (29); The push rod (21) includes a clutch groove (211), and the push rod (21) can slide axially, wherein the second elastic element (20) engages one end of the push rod (21) and Squeeze the push rod (21); The drive gear (22) is fixed with a briquetting block (26), and the briquetting block (26) can contact the other end of the push rod (21) and push the push rod (21) to slide axially; When the pressing block (26) pushes the push rod (21), the push rod (21) pushes the cylinder (28) into the limiting groove (243) through the clutch rod (29) bottom, so that the loading gear (25) and the gear shaft (24) can rotate bidirectionally; when the pressure block (26) breaks away from the push rod (21), the first elastic element (30 ) pushes the clutch lever (29) radially toward the axis of the gear shaft (24), so that the loading gear (25) and the gear shaft (24) can only rotate in one direction. 2. The clutch mechanism according to claim 1, wherein the first elastic element (30) is an elastic metal ring. 3. clutch mechanism as claimed in claim 1, wherein said clutch mechanism also comprises several pins (32) corresponding to said first elastic member (30), and said pin (32) is positioned at described clutch part ( 242) and be fixed between the two ends of the first elastic element (30) away from the side of the axis of the gear shaft (24), so that the first elastic element (30) is pushed by the clutch lever (29) The cylinder (28) is elastically deformed. 4. The clutch mechanism according to claim 1, wherein the clutch mechanism further comprises several third elastic elements (31) corresponding to the cylinder (28), and the third elastic elements (31) are installed on The limit groove (243) is on the side opposite to the clutch lever (29), and is used to push the cylinder (28) so that it can be clamped between the loading gear (25) and the gear shaft (24) between. 5. The clutch mechanism according to claim 1, wherein the pressure block (26) comprises an inclined surface (261) capable of contacting the push rod (21). 6. The clutch mechanism according to claim 1, wherein the limiting groove (243) is a "V"-shaped groove. 7. The clutch mechanism according to claim 1, wherein the end of the clutch lever (29) in contact with the push rod (21) has a slope, so that when the push rod (21) slides axially, the The clutch lever (29) can leave or enter the clutch groove (211). 8. The clutch mechanism according to claim 1, wherein the side of the clutch groove (211) in contact with the clutch rod (29) has a slope, so that when the push rod (21) slides in the axial direction The clutch lever (29) can leave or enter the clutch groove (211). 9. The clutch mechanism according to claim 1, wherein said push rod (21) has a guide sleeve (212) between said gear shaft (24) and said push rod (21) between one end in contact with said pressure block (26) . 10. A gas insulated circuit breaker, comprising a power device, an operating device, an energy storage device, and the clutch mechanism according to any one of the above claims, wherein the loading gear (25) is connected to the power device, and the driving gear ( 22) is connected with the energy storage device, and the gear shaft (24) is connected with the operating device.