Fluid type shaft driving mechanism

Abstract

The invention provides a fluid type shaft driving mechanism which comprises a cylinder body, a main shaft and a transmission arm, the transmission arm is arranged in the cylinder body and can rotate in the cylinder body around the axis of the main shaft, and the cylinder body is divided into a first cavity and a second cavity by the transmission arm. The first sealing bag body is arranged in the first cavity, the second sealing bag body is arranged in the second cavity, and fluid connectors are arranged on the first sealing bag body and the second sealing bag body. When the fluid enters the first sealing bag body, the transmission arm is pushed to move towards the direction of the second cavity; and when the fluid enters the second sealing bag body, the transmission arm is pushed to move towards the direction of the second cavity. According to the fluid type shaft driving mechanism, the manufacturing cost is reduced, and the output torque of the swing driving mechanism is improved.

Description

Technical Field

[0001] The invention relates to the technical field of water conservancy engineering, and in particular to a fluid type shaft driving mechanism. Background Art

[0002] Gates are control facilities used to close and open water discharge channels and are important components of hydraulic structures. They can be used to intercept water flow, control water levels, regulate flow, discharge sediment and floating objects, etc. Among them, bottom-shaft rotating gates are widely used in water conservancy projects because of their simple structure, convenient adjustment, flexible and fast opening and closing.

[0003] The existing bottom-shaft rotating gate usually uses a hydraulic cylinder as a driving device, and the hydraulic cylinder is arranged in the driving device room to isolate the water flow and drive the gate to rotate. Its disadvantages are: due to the large size of the hydraulic cylinder, it is inconvenient to install it during construction, and when the hydraulic cylinder is used as the driving device, the space of the driving device room is large, and the project cost is high.

[0004] Therefore, there is an urgent need in the art for a device that can at least partially solve the above-mentioned defects. Summary of the invention

[0005] In view of the defects in the prior art, an object of the present invention is to provide a fluid type shaft driving mechanism.

[0006] According to the invention, the fluid type shaft driving mechanism comprises a cylinder body, a main shaft and a transmission arm, wherein the transmission arm is arranged in the cylinder body and can rotate in the cylinder body around the main shaft axis, wherein the transmission arm divides the cylinder body space into chambers, wherein the chambers comprise a first chamber and a second chamber;

[0007] It also includes a first sealed capsule and a second sealed capsule, the first sealed capsule is arranged in the first chamber, and the second sealed capsule is arranged in the second chamber; the first sealed capsule and the second sealed capsule are provided with fluid interfaces that allow fluid to enter and / or flow out; when the fluid enters the first sealed capsule, the volume of the first sealed capsule increases, and the first sealed capsule pushes the transmission arm to move toward the second chamber; when the fluid enters the second sealed capsule, the volume of the second sealed capsule increases, and the second sealed capsule pushes the transmission arm to move toward the first chamber.

[0008] Preferably, the fluid interface of the first sealed capsule and / or the second sealed capsule is an inlet and outlet fluid interface or a group of fluid interfaces including an inlet interface and an outlet interface.

[0009] Preferably, when the first sealed capsule is in a fluid inflow state, the second sealed capsule is in a fluid outflow state, the volume of the first sealed capsule increases, and the first sealed capsule pushes the transmission arm to move toward the second chamber; when the second sealed capsule is in a fluid inflow state, the first sealed capsule is in a fluid outflow state, the volume of the second sealed capsule increases, and the second sealed capsule pushes the transmission arm to move toward the first chamber.

[0010] Preferably, the fluid interfaces of the first sealed capsule and the second sealed capsule are connected to the same fluid storage device, and when the fluid is injected into the first sealed capsule from the fluid storage device, the second sealed capsule discharges the fluid into the fluid storage device; when the fluid is injected into the second sealed capsule from the fluid storage device, the first sealed capsule discharges the fluid into the fluid storage device.

[0011] Preferably, the fluid interfaces of the first sealed capsule and the second sealed capsule are respectively connected to the first fluid storage device and the second fluid storage device; when the fluid of the first fluid storage device flows into the first sealed capsule, the fluid of the second sealed capsule flows out to the second fluid storage device; when the fluid of the second fluid storage device flows into the second sealed capsule, the fluid of the first sealed capsule flows out to the first fluid storage device.

[0012] Preferably, the number of the first sealed capsule and / or the second sealed capsule is one.

[0013] Preferably, the number of the first sealed capsule and / or the second sealed capsule is more than two, and each first sealed capsule and / or the second sealed capsule is respectively provided with a fluid interface, and the fluid enters or flows out of the first sealed capsule and / or the second sealed capsule respectively through each fluid interface.

[0014] Preferably, the fluid is hydraulic oil or compressed gas.

[0015] A gate comprises a gate leaf and a rotating shaft, on which the fluid shaft drive mechanism described in the above section is arranged, the rotating shaft is fixedly connected to the main shaft of the fluid shaft drive mechanism, and the fluid shaft drive mechanism drives the rotating shaft to rotate and then drives the gate leaf to rotate.

[0016] Preferably, the number of the fluid-type shaft driving mechanisms is one or more.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. The fluid shaft drive mechanism provided by the present invention realizes shaft drive by respectively arranging sealing capsules on both sides of the transmission arm, and there is no need to arrange a complex sealing structure at the interface of the sealing capsule, thereby simplifying the overall structure of the drive mechanism and reducing the manufacturing cost; and the fluid shaft drive mechanism provided by the present invention can drive the gate body to move between the lying state and the standing state, and the rotation angle range of the gate body is relatively large, and has a very broad scope of application and application prospects in various water conservancy projects;

[0019] 2. The fluid-type shaft driving mechanism provided by the present invention can drive the main shaft to rotate in two directions, and can realize stepless rotation of the main shaft by driving the sealing capsule. In addition, when the fluid in the sealing capsule on one side flows in, the fluid in the sealing capsule on the other side flows out, and the fluid movement processes in the two sealing capsules cooperate with each other, ensuring the synchronous flow of the fluids in the sealing capsules on both sides, so that the main shaft and the device driven by it can operate smoothly.

[0020] 3. The fluid shaft drive mechanism provided by the present invention has a sealing capsule with high sealing reliability and can still maintain a sealed state when the output torque is large, so that the fluid shaft drive mechanism provided by the present invention can be applied to high-pressure working conditions.

[0021] 4. The fluid shaft drive mechanism provided by the present invention has a small volume, so there are many options for its layout position, and it is easy to install. Even if a drive device room is opened, the space required for the drive device room is greatly reduced, thereby reducing the project cost;

[0022] 5. The present invention arranges a plurality of sealing capsules in one chamber. Even if one of the sealing capsules is damaged and leaks, the remaining sealing capsules can still play a buffering and supporting role, thereby further improving the safety of the driving mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Other features, objects and advantages of the present invention will become more apparent from the detailed description of non-limiting embodiments made with reference to the following drawings:

[0024] Figure 1 is a general structural diagram of the fluid type shaft driving mechanism of the first embodiment;

[0025] Figure 2 It is a front view of the fluid type shaft driving mechanism of the first embodiment;

[0026] Figure 3 is a cross-sectional view of the fluid-type shaft driving mechanism of the first embodiment, in which the transmission arm moves close to the first cavity;

[0027] Figure 4 is a cross-sectional view of the fluid-type shaft driving mechanism of the first embodiment, in which the transmission arm moves close to the second cavity;

[0028] Figure 5 It is a cross-sectional view of the fluid-type shaft driving mechanism of the second embodiment, in which the transmission arm moves close to the first cavity. There are two sealing capsules in the first cavity and the second cavity;

[0029] Figure 6 is a cross-sectional view of the fluid-type shaft driving mechanism of the second embodiment, in which the transmission arm moves close to the second cavity;

[0030] Figure 7 This is a schematic diagram of the gate installation structure of the third embodiment, in which the fluid-driven mechanism is installed on one side of the gate shaft;

[0031] Figure 8 This is a partial schematic diagram of the gate installation of the third embodiment;

[0032] Fig. 9 for Figure 8 Side view of the installation of the middle gate and the fluid-driven mechanism;

[0033] Fig.10 Schematic diagram of the installation structure of the gate and the fluid-driven mechanism in the fourth embodiment, in which two fluid-driven mechanisms are installed on one side of the gate shaft.

[0034] The figure shows:

[0035] 1—Cylinder

[0036] 2—Spindle

[0037] 3—Transmission arm

[0038] 41 - First Chamber

[0039] 42—Second Chamber

[0040] 51—first sealed capsule

[0041] 52—Second sealed capsule

[0042] 6—Fluid interface

[0043] 7 - Door leaf

[0044] 8—Rotating shaft

[0045] 9—Civil Structure DETAILED DESCRIPTION

[0046] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application described and shown in the drawings here can be arranged and designed in various different configurations.

[0047] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application for which protection is sought, but merely represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present application.

[0048] It should be noted that similar numbers and letters represent similar items in the following figures. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in the subsequent figures. In addition, all directional indications in this application (such as up, down, left, right, front, back, bottom...) are only used to explain the relative position relationship, movement, etc. between the components under a certain specific posture (as shown in the figures). If the specific posture changes, the directional indication will also change accordingly. Furthermore, the descriptions involving "first", "second", etc. in the application are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated.

[0049] Embodiment 1:

[0050] like Figure 1-4 As shown, this embodiment provides a fluid shaft drive mechanism, including a cylinder body 1, a main shaft 2 and a transmission arm 3. The cylinder body 1 is U-shaped as a whole, the main shaft 2 is rotatably arranged on the cylinder body 1, and the transmission arm 3 is fan-shaped as a whole. The transmission arm 3 is fixedly arranged with the main shaft 2 and can rotate relative to the axis of the main shaft 2 in the cylinder body 1, thereby driving the main shaft 2 to rotate and output torque. In other embodiments not shown, the cylinder body 1 can also be disc-shaped as a whole.

[0051] like Figure 3 As shown, the transmission arm 3 divides the cylinder body 1 into a first chamber 41 and a second chamber 42. The first chamber 41 and the second chamber 42 are cylindrical as a whole. The total volume of the first chamber 41 and the second chamber 42 is fixed. When the transmission arm 3 swings toward the first chamber 41, the volume of the corresponding first chamber 41 decreases and the volume of the second chamber 42 increases.

[0052] A first sealed capsule 51 is disposed in the first chamber 41, and a second sealed capsule 52 is disposed in the second chamber 42. In this embodiment, the first sealed capsule 51 and the second sealed capsule 52 are both retractable capsules, which are cylindrical in shape and have smooth outer surfaces. A fluid interface 6 is disposed on each of the first sealed capsule 51 and the second sealed capsule 52, and openings are disposed at corresponding positions of the cylinder 1 and the first and second sealed capsule fluid interfaces 6 to facilitate fluid inflow and outflow.

[0053] In other embodiments not shown, the fluid interfaces 6 of the first sealed capsule 51 and the second sealed capsule 52 may be provided with an inlet interface and an outlet interface to form a group of fluid interfaces 6 .

[0054] The first sealed capsule 51 and the second sealed capsule 52 are filled with hydraulic oil and are sealed. The hydraulic oil can only flow in or out through the interface on the sealed capsule. The hydraulic oil of this embodiment is directly filled in the capsule, and there is no need to set a seal between the cylinder 1 and the block, and between the cylinder 1 and the transmission arm 3 like the traditional swing drive mechanism. At the same time, the smooth transition outer surface of the capsule makes the surface of the capsule evenly stressed, and it can withstand high pressure and still maintain a sealed state, thereby increasing the driving force on the transmission arm 3 and the output torque of the main shaft 2.

[0055] In this embodiment, the fluid interfaces of the first sealed capsule 51 and the second sealed capsule 52 are connected to the same fluid storage device, and the fluid storage device can control the injection and extraction of hydraulic oil in the sealed capsules. During use, when the fluid is injected from the fluid storage device into the first sealed capsule 51, the second sealed capsule 52 discharges the fluid into the fluid storage device; when the fluid is injected from the fluid storage device into the second sealed capsule 52, the first sealed capsule 51 discharges the fluid into the fluid storage device. The first sealed capsule 51 and the second sealed capsule 52 share the same fluid storage device to ensure that the hydraulic oil is injected into one side of the sealed capsule and is simultaneously extracted from the other side, thereby improving the stability and reliability of the movement of the fluid-type shaft drive mechanism.

[0056] As for the fluid storage device, those skilled in the art can configure the fluid storage device in different forms according to actual needs. For example, the fluid storage device can be configured as an oil tank of a pump station.

[0057] In other embodiments not shown, the fluid interfaces of the first sealed capsule 51 and the second sealed capsule 52 can be connected to the first fluid storage device and the second fluid storage device respectively. During operation, one fluid storage device is controlled to inject hydraulic oil, and the other fluid storage device is synchronously extracted from the hydraulic oil; or one fluid storage device is controlled to extract the hydraulic oil first, and the other fluid storage device is then injected with hydraulic oil.

[0058] The driving process of the fluid shaft drive mechanism is as follows: Figure 3 As shown, when the hydraulic oil flows into the second sealed capsule 52, the volume of the second sealed capsule 52 increases, pushing the transmission arm 3 to swing toward the second cavity, and at the same time the hydraulic oil in the second sealed capsule 52 flows out; Figure 4 As shown, when the hydraulic oil flows into the first sealed capsule 51, the volume of the first sealed capsule 51 increases. Since the inner wall of the U-shaped end of the cylinder body 1 limits the expansion trend of the first sealed capsule 51, the first sealed capsule 51 will push the transmission arm 3 to swing toward the second cavity, and the hydraulic oil in the second sealed capsule 52 will flow out. The fluid shaft drive mechanism provided in this embodiment can control the stepless swing of the transmission arm 3 by controlling the inflow and outflow of the hydraulic oil, thereby accurately controlling the rotation angle of the main shaft 2.

[0059] Embodiment 2:

[0060] like Figure 5 and Figure 6 As shown, this embodiment provides a fluid-type shaft drive mechanism, and its structure is basically the same as the technical solution adopted in Example 1, except that in this embodiment, the number of the first sealed capsule 51 and the second sealed capsule 52 are both two, and each of the first sealed capsule 51 and the second sealed capsule 52 is respectively provided with a fluid interface 6. Two capsules are provided in each chamber. If one of the sealed capsules fails, the other sealed capsule can still play a buffering and driving role to a certain extent, further improving the safety and reliability of the use of the drive mechanism. In other embodiments not shown, each chamber can also have three or more capsules, and the capsules can be filled with compressed gas.

[0061] Embodiment 3:

[0062] like Figures 7 to 9 As shown, this embodiment provides a gate, including a gate leaf 7 and a rotating shaft 8, the rotating shaft 8 and the gate leaf 7 are fixedly connected, a fluid shaft driving mechanism is arranged on one side of the rotating shaft 8, the main shaft 2 of the driving mechanism is fixedly connected to the rotating shaft 8 of the gate, and the fluid driving mechanism, the gate leaf 7 and the rotating shaft 8 are installed together on the civil engineering structure 9. When the gate leaf 7 needs to rotate, the main shaft 2 of the hydraulically driven swing driving mechanism outputs torque, drives the gate rotating shaft 8 to rotate, and synchronously drives the gate leaf 7 to open or close relative to the civil engineering structure 9.

[0063] In other embodiments not shown, the gate can also be set to double-sided drive, that is, a fluid-driven hydraulic drive mechanism is set on both sides of the left and right sides of the gate. The double-sided drive can increase the torque applied to the gate shaft 8 and make the torque applied to the gate shaft 8 more uniform, thereby preventing the gate shaft 8 from being damaged by uneven stress, thereby improving the working stability and service life of the gate.

[0064] Embodiment 4:

[0065] like Fig.10 As shown, this embodiment provides a gate, and its structure is basically the same as that of the third embodiment, except that, in this embodiment, there are two fluid-driven hydraulic drive mechanisms arranged on one side of the gate shaft 8, so that the gate can still work stably for a period of time when one drive mechanism fails. In other embodiments not shown, there can also be three or more fluid-driven mechanisms arranged on one side of the gate shaft 8.

[0066] The above describes the specific embodiments of the present invention. Based on the above description, relevant personnel can make various changes and modifications without departing from the technical concept of the present invention.

Claims

1. A fluid shaft drive mechanism, comprising a cylinder (1), a main shaft (2) and a transmission arm (3), wherein the transmission arm (3) is arranged in the cylinder (1) and can rotate around the axis of the main shaft (2) in the cylinder (1), and the transmission arm (3) divides the space of the cylinder (1) into chambers, wherein the chambers include a first chamber (41) and a second chamber (42); It is characterized in that The invention also comprises a first sealed capsule (51) and a second sealed capsule (52), wherein the first sealed capsule (51) is arranged in the first chamber (41), and the second sealed capsule (52) is arranged in the second chamber (42); the first sealed capsule (51) and the second sealed capsule (52) are provided with fluid interfaces (6) for allowing fluid to enter and / or flow out; when the fluid enters the first sealed capsule (51), the volume of the first sealed capsule (51) increases, and the first sealed capsule (51) pushes the transmission arm (3) to move in the direction of the second chamber (42); when the fluid enters the second sealed capsule (52), the volume of the second sealed capsule (52) increases, and the second sealed capsule (52) pushes the transmission arm (3) to move in the direction of the first chamber (41).

2. The fluid type shaft drive mechanism according to claim 1, characterized in that: The fluid interface (6) of the first sealed capsule (51) and / or the second sealed capsule (52) is an inlet and outlet fluid interface or a group of fluid interfaces including an inlet interface and an outlet interface.

3. The fluid type shaft driving mechanism according to claim 1, characterized in that: When the first sealed capsule (51) is in a fluid inflow state, the second sealed capsule (52) is in a fluid outflow state, the volume of the first sealed capsule (51) increases, and the first sealed capsule (51) pushes the transmission arm (3) to move toward the second chamber (42); when the second sealed capsule (52) is in a fluid inflow state, the first sealed capsule is in a fluid outflow state, the volume of the second sealed capsule (52) increases, and the second sealed capsule (52) pushes the transmission arm (3) to move toward the first chamber (41).

4. The fluid type shaft driving mechanism according to claim 1, characterized in that: The fluid interfaces (6) of the first sealed capsule (51) and the second sealed capsule (52) are connected to the same fluid storage device, and when the fluid is injected from the fluid storage device into the first sealed capsule (51), the second sealed capsule (52) discharges the fluid into the fluid storage device; When the fluid is injected from the fluid storage device into the second sealed capsule (52), the first sealed capsule (51) discharges the fluid into the fluid storage device.

5. The fluid type shaft driving mechanism according to claim 1, characterized in that: The fluid interfaces (6) of the first sealed capsule (51) and the second sealed capsule (52) are connected to the first fluid storage device and the second fluid storage device respectively; when the fluid of the first fluid storage device flows into the first sealed capsule (51), the fluid of the second sealed capsule (52) flows out to the second fluid storage device; When the fluid in the second fluid storage device flows into the second sealed capsule (52), the fluid in the first sealed capsule (51) flows out to the first fluid storage device.

6. The fluid type shaft driving mechanism according to claim 1, characterized in that: The number of the first sealed capsule (51) and / or the second sealed capsule (52) is one.

7. The fluid type shaft driving mechanism according to claim 1, characterized in that: The number of the first sealed capsule (51) and / or the second sealed capsule (52) is more than two, and each first sealed capsule (51) and / or the second sealed capsule (52) is respectively provided with a fluid interface, and the fluid enters or flows out of the first sealed capsule (51) and / or the second sealed capsule (52) respectively through each fluid interface.

8. The fluid type shaft driving mechanism according to claim 1, characterized in that: The fluid is hydraulic oil or compressed gas.

9. A gate, comprising a gate leaf (7) and a rotating shaft (8), characterized in that: The rotating shaft is provided with a fluid shaft drive mechanism as claimed in any one of claims 1 to 5, the rotating shaft is fixedly connected to the main shaft (2) of the fluid shaft drive mechanism, and the fluid shaft drive mechanism drives the rotating shaft to rotate and further drives the gate leaf (7) to rotate.

10. The gate according to claim 7, characterized in that: The number of the fluid type shaft driving mechanism is one or more.

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