Combined locking oil cylinder
By integrated solenoid valves and suspension devices in the lock lock cylinder, the problem of easy to break the welding seams of the oil cylinder, difficulty in maintaining the maintenance of pipeline joints, and lack of buffer structure, and achieve safer and convenient maintenance and operation.
Patent Information
- Application Number
- CN202420541113.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-20
- Publication Date
- 2025-01-28
- Estimated Expiration
- 2034-03-20
AI Technical Summary
The cylinder welds of the existing ingot locking device are prone to breakage, difficult to maintain the pipeline joints, and lack of buffer structure leads to the phenomenon of cylinder impact. Temporary measures are required for hanging the heavy blocks during maintenance.
Design a combination of ingot lock cylinder, integrated solenoid valve on the upper cylinder head, reduce pipelines and interfaces, use a suspension device to hang heavy blocks, and avoid hitting the cylinder by throwing holes and buffering cavity.
The pipeline pollution is reduced, the maintenance operation is simplified, the phenomenon of welded cracks and cylinders is avoided, and maintenance is conveniently maintained through the suspension device.
Smart Images
Figure CN222415501U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of water turbine generators, and specifically relates to a combined spindle locking cylinder. Background Art
[0002] The relays of the four hydro-turbine generators of Zipingpu Hydropower Plant adopt a frame-type locking structure. The locking mechanism is lifted by oil pressure, and the piston is lowered by the deadweight and oil pressure of the locking device bracket to achieve the purpose of locking. The locking solenoid valve is installed on the lining of the pit next to the relay, and connected to the locking device cylinder through a steel pipe. There are the following problems in operation: 1. The vibration caused by hydraulic or other factors during the operation of the unit will cause the pipe joints and welds between the locking device cylinder and the solenoid valve to rupture; 2. The solenoid valve pipeline design is too centralized. Due to the limitation of the solenoid valve installation space, the maintenance and operation of the pipe joints are difficult, the pipe joints cannot be tightened in place, and the pipe joints often leak oil; 3. The oil cylinder has no buffer structure. When the oil cylinder piston moves to both ends, it is easy to hit the cylinder; 4. When the oil cylinder needs to be inspected and maintained, the weight block needs to be hung, which usually requires the inspection and maintenance personnel to take temporary measures on site. Utility Model Content
[0003] The utility model aims to provide a combined spindle locking oil cylinder, which mainly solves the problems that the weld seams of the oil cylinders of the existing spindle locking devices are easy to break and the pipe joints are difficult to maintain.
[0004] In order to achieve the above purpose, the technical solution adopted by the utility model is as follows:
[0005] A combined locking spindle cylinder comprises a cylinder body with a flow channel inside, a piston arranged in the cylinder body, a lower cylinder cover arranged at the lower end of the cylinder body and having a lower buffer chamber, an upper cylinder cover arranged at the upper end of the cylinder body and having an upper buffer chamber, an oil circuit arranged in the upper cylinder cover and the lower cylinder cover and connected with the flow channel of the cylinder body, and a solenoid valve integrated on the upper cylinder cover for realizing oil circuit switching; wherein the flow channel vertically penetrates the cylinder body.
[0006] Furthermore, in the utility model, the oil circuit includes a first pipeline arranged in the lower cylinder head at one end thereof communicating with the lower end of the flow channel and the other end communicating with the cavity in the cylinder body, a second pipeline penetrating the upper cylinder head and communicating with the upper end of the flow channel at one end and connected to an outlet A of the solenoid valve at the other end, a third pipeline connected to an outlet P of the solenoid valve, a fourth pipeline arranged in the upper cylinder head and communicating with the cavity at the upper end of the cylinder body at one end, a fifth pipeline communicating with the fourth pipeline through a T-type interface in the upper cylinder head at one end and connected to an outlet T of the solenoid valve at the other end, and a sixth pipeline connected to an outlet B of the solenoid valve at one end and penetrating the upper cylinder head and communicating with the cavity at the upper end of the cylinder body at the other end.
[0007] Furthermore, in the utility model, throttling holes are arranged in the first pipeline and the fourth pipeline; and throttling gaskets which are easy to replace are arranged in the throttling holes.
[0008] Furthermore, in the utility model, suspension devices are arranged on the left and right sides of the lower end of the cylinder body; the suspension device is composed of an ear plate and bolts.
[0009] Compared with the prior art, the utility model has the following beneficial effects:
[0010] (1) The utility model integrates the solenoid valve on the upper cylinder cover, reducing the number of pipelines and interfaces, and only retaining the pipelines connected to the oil source and the oil return, thereby reducing possible pollution to the environment.
[0011] (2) The utility model does not require external pipelines, and only needs to change the flow channel in the upper cylinder cover to achieve the cylinder being put into operation by its own weight or by oil pressure.
[0012] (3) When the oil cylinder of the utility model needs to be inspected and maintained, the weight block can be hung up by the suspension device without affecting the normal operation of the oil cylinder.
[0013] (4) The utility model adjusts the appropriate throttle hole in the oil discharge channel and sets the appropriate movement time to avoid the risk of the piston moving too fast and the locking beam getting stuck. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] Figure 1 It is a cross-sectional view of the combined locking spindle cylinder device in the utility model.
[0015] Figure 2 It is a hydraulic schematic diagram of the combined spindle locking cylinder device in the utility model.
[0016] The names corresponding to the reference numerals are:
[0017] 1-flow channel, 2-cylinder body, 3-piston, 4-lower buffer chamber, 5-lower cylinder head, 6-upper buffer chamber, 7-upper cylinder head, 8-oil circuit, 9-solenoid valve, 10-throttling gasket, 11-suspension device, 12-ear plate, 13-bolt, 101-first pipeline, 102-second pipeline, 103-third pipeline, 104-fourth pipeline, 105-fifth pipeline, 106-sixth pipeline. DETAILED DESCRIPTION
[0018] The present invention is further described below in conjunction with the accompanying drawings and embodiments. The present invention includes but is not limited to the following embodiments.
[0019] like Figure 1As shown, the utility model discloses a combined locking cylinder, comprising a cylinder body 2 with a flow channel 1 inside, a piston 3 arranged in the cylinder body 2, a lower cylinder cover 5 arranged at the lower end of the cylinder body 2 and having a lower buffer chamber 4, an upper cylinder cover 7 arranged at the upper end of the cylinder body 2 and having an upper buffer chamber 6, an oil circuit 8 arranged in the upper cylinder cover 7 and the lower cylinder cover 5 and communicating with the flow channel of the cylinder body, and a solenoid valve 9 integrated on the upper cylinder cover 7 for realizing oil circuit switching; wherein, the flow channel 1 vertically penetrates the cylinder body 2.
[0020] In this embodiment, the oil circuit 8 includes a first pipeline 101 arranged in the lower cylinder head 5, one end of which is connected to the lower end of the flow channel 1 and the other end is connected to the cavity in the cylinder body 2, a second pipeline 102 that passes through the upper cylinder head 7 and one end is connected to the upper end of the flow channel 1 and the other end is connected to an outlet A of the solenoid valve 9, a third pipeline 103 connected to an outlet P of the solenoid valve 9, a fourth pipeline 104 arranged in the upper cylinder head 7 and one end is connected to the cavity at the upper end of the cylinder body, a fifth pipeline 105 that one end is connected to the fourth pipeline 104 through a T-type interface in the upper cylinder head 7 and the other end is connected to an outlet T of the solenoid valve 9, and a sixth pipeline 106 that one end is connected to an outlet B of the solenoid valve 9 and the other end passes through the upper cylinder head 7 and is connected to the cavity at the upper end of the cylinder body.
[0021] In this embodiment, the solenoid valve 9 is integrated on the upper cylinder cover 7, and the hydraulic fluid enters and exits the lower chamber of the cylinder through the A port of the solenoid valve, the upper cylinder cover, the cylinder body, and the flow channel in the lower cylinder cover. At the same time, the hydraulic fluid enters and exits the upper chamber of the cylinder through the B port of the solenoid valve and the flow channel in the upper cylinder cover.
[0022] like Figure 2 As shown, the solenoid valve 9 adopts a two-position four-way solenoid valve. The double-dotted line part in the figure is the flow channel conversion function inside the upper cylinder cover. When the lower part is in effect, the upper chamber of the cylinder is connected to the B port of the solenoid valve through the sixth pipeline 106, and the oil path between the return oil T port and the upper chamber of the cylinder is blocked. At this time, the weight connected to the cylinder is dropped in by oil pressure (falling); when the upper part is in effect, the upper chamber of the cylinder is directly connected to the return oil T port through the fourth pipeline 104, and the B port of the solenoid valve and the oil path between the upper chamber of the cylinder are blocked. At this time, the weight connected to the cylinder is dropped in by its own weight (falling).
[0023] exist Figure 2 When in the position shown, port A of the solenoid valve is connected to port P, port B is connected to port T, and the hydraulic fluid enters the lower chamber of the cylinder through port A of the solenoid valve, the upper cylinder cover, the cylinder body, the flow channel and the oil circuit in the lower cylinder cover. At this time, no matter whether the lower part or the upper part of the flow channel conversion function inside the upper cylinder cover is in effect, the upper chamber of the cylinder is connected to the return oil port T, the cylinder piston moves upward, and the weight is pulled out (lifted).
[0024] After the solenoid valve is switched, the B port of the solenoid valve is connected to the P port, and the A port is connected to the T port, and the hydraulic fluid flows out of the lower chamber of the oil cylinder through the A port of the solenoid valve, the upper cylinder cover, the cylinder body, and the flow channel and oil path in the lower cylinder cover. At this time, when the lower part of the flow channel conversion function inside the upper cylinder cover 7 is in effect, the oil path between the return oil port T and the upper chamber of the oil cylinder is blocked, and the hydraulic fluid enters the upper chamber of the oil cylinder through the B port of the solenoid valve, and the oil cylinder piston 3 moves downward by the oil pressure, and the weight (falls) is put in; when the upper part of the flow channel conversion function inside the upper cylinder cover is in effect, the B port of the solenoid valve and the oil path of the upper chamber of the oil cylinder are blocked, the upper chamber of the oil cylinder is directly connected to the return oil port T, there is no pressure in the upper chamber of the oil cylinder, and the oil cylinder piston moves downward by the dead weight of the weight, and the weight (falls) is put in.
[0025] When the piston moves downward and approaches the end, the protruding part of the lower part of the piston enters the recessed part of the lower cylinder cover (i.e., the lower buffer chamber 4), blocking the normal outflow path of the fluid in the lower chamber of the oil cylinder, so that the fluid must flow out from the throttling hole of the lower cylinder cover 5 (adjust the piston movement time according to the aperture size of the throttling gasket 10 in the throttling hole in the oil circuit), slowing down the flow rate of the fluid, forcing the piston movement to decelerate, and playing a buffering role; when the piston moves upward and approaches the end, the protruding part of the upper part of the piston enters the recessed part of the upper cylinder cover, blocking the normal outflow path of the fluid in the upper chamber of the oil cylinder, so that the fluid must flow out from the throttling hole of the upper end cover (adjust the piston movement time according to the aperture size of the throttling gasket 10 in the throttling hole in the oil circuit), slowing down the flow rate of the fluid, forcing the piston movement to decelerate, and playing a buffering role.
[0026] When the oil cylinder is in the pull-out (lifting) position, the weight block can be fixed in this pull-out (lifting) position through the suspension device 11 around the oil cylinder. At this time, no matter the pressure is released or the solenoid valve function is switched, the weight block is fixed in this pull-out (lifting) position and cannot move; only when the pressure is restored and the solenoid valve function is switched to the pull-out (lifting) position, the suspension function can be removed; wherein, the suspension device 11 adopts the structure of ear plate 12 plus bolt 13.
[0027] Through the above design, the utility model integrates the solenoid valve on the upper cylinder cover, reduces the pipelines and interfaces, and only retains the pipelines connected to the oil source and the return oil, reducing the possible pollution to the environment. In addition, the device does not need to pass through external pipelines, and only needs to change the flow channel in the upper cylinder cover to realize the oil cylinder being put into operation by its own weight or by oil pressure.
[0028] The above embodiment is only one of the preferred implementation modes of the present utility model and should not be used to limit the protection scope of the present utility model. Any changes or modifications that are made to the main design concept and spirit of the present utility model without any substantive significance, as long as the technical problems solved are still consistent with the present utility model, should be included in the protection scope of the present utility model.
Claims
1. A combined locking cylinder, characterized in that: The invention comprises a cylinder body (2) having a flow channel (1) therein, a piston (3) arranged in the cylinder body (2), a lower cylinder head (5) arranged at the lower end of the cylinder body (2) and having a lower buffer chamber (4), an upper cylinder head (7) arranged at the upper end of the cylinder body (2) and having an upper buffer chamber (6), an oil circuit (8) arranged in the upper cylinder head (7) and the lower cylinder head (5) and communicating with the flow channel of the cylinder body, and a solenoid valve (9) integrated in the upper cylinder head (7) for realizing oil circuit switching; wherein the flow channel (1) vertically penetrates the cylinder body (2).
2. A combined spindle locking cylinder according to claim 1, characterized in that: The oil circuit (8) comprises a first pipeline (101) arranged in the lower cylinder cover (5) and connected to the lower end of the flow channel (1) at one end and connected to the cavity in the cylinder body (2) at the other end; a second pipeline (102) penetrating the upper cylinder cover (7) and connected to the upper end of the flow channel (1) at one end and connected to an outlet A of the solenoid valve (9) at the other end; a third pipeline (103) connected to an outlet P of the solenoid valve (9); a fourth pipeline (104) arranged in the upper cylinder cover (7) and connected to the cavity at the upper end of the cylinder body at one end; a fifth pipeline (105) having one end connected to the fourth pipeline (104) through a T-shaped interface in the upper cylinder cover (7) and connected to an outlet T of the solenoid valve (9) at the other end; and a sixth pipeline (106) having one end connected to an outlet B of the solenoid valve (9) and the other end penetrating the upper cylinder cover (7) and connected to the cavity at the upper end of the cylinder body.
3. A combined spindle locking cylinder according to claim 2, characterized in that: The first pipeline and the fourth pipeline are provided with throttling holes; and the throttling holes are provided with throttling gaskets (10) which are easy to replace.
4. A combined spindle locking cylinder according to claim 3, characterized in that: The left and right sides of the lower end of the cylinder body (2) are provided with suspension devices (11); the suspension devices are composed of a lug plate (12) and bolts (13).