Hydraulic cylinder assembly for power trim device
By designing a hydraulic cylinder component for power vertical tilt devices, including electric motors, gear pumps, exchange seat components, and hydraulic cylinders, the problem of being unable to lift the outline when the motor is damaged. Manually lift up and quickly reset the circuit.
Patent Information
- Application Number
- CN202421271152.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-05
- Publication Date
- 2025-01-24
- Estimated Expiration
- 2034-06-05
AI Technical Summary
In the prior art, the outboard cannot be lifted when the motor is damaged, which affects efficiency.
Design a hydraulic cylinder component for power vertical tilt devices, including electric motor, gear pump, exchange seat component and hydraulic cylinder, and connect the hydraulic cylinder and exchange seats by manual leakage valve to ensure that the engine can manually manually manual when the motor fails Lift.
It can manually lift the out -of -the -outside machine when the motor fails, improves efficiency, and can quickly reset the circuit after colliding underwater.
Smart Images
Figure CN222388351U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of jacks, in particular to a hydraulic cylinder assembly for a power trim device. Background Art
[0002] As is well known, military assault boats, speedboats, civilian small boats, etc. all use an external propulsion device at the rear end of the hull, referred to as an outboard motor. The outboard motor is an integrated structure with a fuel tank, an engine and an operating lever at the upper end and a propulsion propeller at the lower end. The outboard motor is located outside the rear end of the hull and is axially connected to the side of the ship.
[0003] The tilter has a built-in power trim system, which consists of an electric motor, a pressurized reservoir, a pump and a trim hydraulic cylinder. There is a switch on the remote control (or trim control panel). It is used to tilt the outboard up or down, and is also used to tilt the outboard up when sailing at low speed in shallow water or towing. Whether the engine is running under load or in the stopped state, it can be trimmed up or down.
[0004] Hydraulic equipment is widely used in industrial and civil sectors; the function of the hydraulic system's actuators, hydraulic cylinders and hydraulic motors, is to convert the pressure energy of the liquid into mechanical energy to obtain the required linear reciprocating motion or rotary motion; the components can be modified at will according to the desired designed action to achieve the desired work; the hydraulic lifting device is a more common type of hydraulic equipment, and people can use it in a series of environments such as material handling, equipment lifting and closing, equipment positioning, etc.
[0005] According to a new type of electro-hydraulic lifting device for outboard motors disclosed in Chinese patent publication number CN 205524906U, it includes an oil cylinder, a piston, a light DC motor, a motor protective cover, a cylinder valve connecting plate, a wheel pump, a control valve body and an oil cavity; the piston includes an upper piston, a lower piston and a piston rod; the upper piston and the lower piston rod are partially located in the oil cylinder, and the upper piston is equipped with two sets of safety valves in opposite directions; the motor is covered with a motor protective cover. In the utility model, the upper piston is equipped with two sets of safety valves in opposite directions to realize the safety and anti-collision function of the motor body, and the motor is covered with a motor protective cover. The motor protective cover is made of a special seawater abrasion-resistant material, and is separated from the external environment by a seal to prevent water fog from penetrating to ensure the performance and life of the motor.
[0006] However, the above device has the problem that if the motor is damaged, the outboard motor cannot be lifted, which affects the efficiency. Utility Model Content
[0007] The utility model aims to provide a hydraulic cylinder assembly for a power trim device to solve the problems raised in the above background technology.
[0008] In order to solve the above technical problems, the utility model provides the following technical solutions: a hydraulic cylinder assembly for a power trim device, comprising a power trim device, an electric motor is installed above the power trim device, a gear pump is fixedly connected below the electric motor, a manifold assembly is installed below the gear pump, a hydraulic cylinder is fixedly connected to one side of the manifold assembly, an impact push rod assembly is installed on the inner wall of the hydraulic cylinder, and an end cover is fixedly connected to the top of the hydraulic cylinder;
[0009] The confluence seat assembly includes a confluence seat, a manual discharge valve is threadedly connected to the right side of the confluence seat, a confluence seat backflow suction valve is installed above the confluence seat, a tilting overflow piston is slidably connected to the left side of the confluence seat, and a tilting overflow valve is arranged on the right side of the tilting overflow piston;
[0010] The impact push rod assembly includes a pitch push rod, an impact piston is fixedly connected below the pitch push rod, a positioning piston is arranged below the impact piston, an impact return valve is fixedly connected above the impact piston, and an impact overflow valve is fixedly connected below the impact piston.
[0011] Preferably, the upper portion of the confluence seat is fixedly connected to the gear pump, the reverse flow suction valve of the confluence seat is connected to the lower portion of the gear pump, and the left side of the confluence seat is fixedly connected to the right side of the hydraulic cylinder.
[0012] Preferably, the pitch push rod is slidably connected to the end cover and the inner wall of the hydraulic cylinder, and the impact piston and the positioning piston are both slidably connected to the inner wall of the hydraulic cylinder.
[0013] Preferably, an O-ring is fixedly connected at the connection between the manual relief valve and the manifold seat, and the lift-up overflow valve is fixedly connected to the left side of the manifold seat.
[0014] Preferably, the minimum uptilt pressure below the hydraulic cylinder is 18200 kPa (2640 psi).
[0015] Preferably, the right side tilting overflow pressure of the tilting overflow valve is 3725-6825 kPa (540-990 psi).
[0016] Preferably, the impact relief pressure at the impact relief valve is 8065-9375 kPa (1170-1360 psi).
[0017] Compared with the prior art, the beneficial effects achieved by the utility model are:
[0018] First, to manually tilt the outboard motor, the boat owner needs to turn out the manual drain valve 3 to 5 turns. After the manual drain valve is withdrawn, the internal pipes of the manifold are connected to each other. These channels connect the up-tilt chamber and down-tilt chamber of the hydraulic cylinder, as well as the oil reservoir inside the gear pump, so that the engine can be raised or lowered. The action of the trim push rod continues until the manual drain valve is closed, sealing the working fluid in the hydraulic cylinder and the manifold. If the outboard motor is to be manually raised, the manual drain valve (tilt) valve is rotated counterclockwise to the fully withdrawn position. In the full (withdrawn) position, the oil in the hydraulic cylinder can flow freely from top to bottom or from bottom to top. The return line to the oil reservoir inside the gear pump is also unobstructed, allowing the oil to flow freely to each side of the hydraulic cylinder to compensate for the different volumes of the upper and lower chambers of the hydraulic cylinder. When the outboard motor is tilted up or down, if the manual drain valve is open or leaking, the engine will have little or no movement. The oil pressure from the gear pump will be supplied to the up-tilt chamber and to the down-tilt chamber through the manual drain valve. This allows the outboard motor to be manually cocked when the motor fails.
[0019] Second, after the outboard motor leaves the underwater object, the weight of the engine increases the oil pressure between the positioning piston and the impact piston. When it rises to the required level, the impact return valve in the impact piston is opened to allow the oil to return to the downward chamber through the impact piston. If necessary, additional oil enters the downward chamber through the manifold backflow suction valve. In this way, the engine is reset to hold the positioning piston and return to the original operating position, completing the reset circuit after underwater collision, achieving the effect of facilitating the rapid reset circuit after underwater collision. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] Figure 1 It is a three-dimensional structural schematic diagram of the hydraulic cylinder and impact push rod assembly of the utility model;
[0021] Figure 2 It is a three-dimensional exploded structural diagram of the motor, gear pump and manifold assembly of the utility model;
[0022] Figure 3 It is a schematic diagram of the overall cross-sectional structure of the utility model;
[0023] Figure 4 It is a schematic diagram of the enlarged structure of the overall section A of the utility model.
[0024] Among them: 1. Electric motor; 2. Gear pump; 3. Manifold seat assembly; 4. Hydraulic cylinder; 5. Impact push rod assembly; 6. End cover; 31. Manifold seat; 32. Manual relief valve; 33. Manifold seat backflow suction valve; 34. Lifting overflow piston; 35. Lifting overflow valve; 51. Trim push rod; 52. Impact piston; 53. Positioning piston; 54. Impact return valve; 55. Impact overflow valve. DETAILED DESCRIPTION
[0025] The specific implementation of the utility model will be further described in detail below with reference to the accompanying drawings.
[0026] A hydraulic cylinder assembly for a power trim device in this specific implementation manner, such as Figure 1-4 As shown, it includes a power trim device, an electric motor 1 is installed above the power trim device, a gear pump 2 is fixedly connected below the electric motor 1, a manifold assembly 3 is installed below the gear pump 2, a hydraulic cylinder 4 is fixedly connected to one side of the manifold assembly 3, an impact push rod assembly 5 is installed on the inner wall of the hydraulic cylinder 4, and an end cover 6 is fixedly connected above the hydraulic cylinder 4;
[0027] The confluence seat assembly 3 includes a confluence seat 31, a manual discharge valve 32 is threadedly connected to the right side of the confluence seat 31, a confluence seat backflow suction valve 33 is installed above the confluence seat 31, a tilting overflow piston 34 is slidably connected to the left side of the confluence seat 31, and a tilting overflow valve 35 is arranged on the right side of the tilting overflow piston 34;
[0028] The impact push rod assembly 5 includes a pitch push rod 51 , an impact piston 52 is fixedly connected below the pitch push rod 51 , a positioning piston 53 is arranged below the impact piston 52 , an impact return valve 54 is fixedly connected above the impact piston 52 , and an impact overflow valve 55 is fixedly connected below the impact piston 52 .
[0029] By means of the above technical solution, to manually tilt the outboard motor, the boat owner needs to rotate the manual drain valve 32 out 3 to 5 turns. After the manual drain valve 32 is withdrawn, the internal pipes of the manifold 31 are connected to each other. These channels connect the up-tilt chamber and down-tilt chamber of the hydraulic cylinder 4 and the oil reservoir inside the gear pump 2, so that the engine can be raised or lowered. The action of the trim push rod 51 continues until the manual drain valve 32 is closed, sealing the working fluid in the hydraulic cylinder 4 and the manifold 31. If the outboard motor is to be manually raised, the manual drain valve 32 (tilt) valve is rotated counterclockwise to the fully withdrawn position. In the fully (withdrawn) position, the oil in the hydraulic cylinder 4 can flow freely from top to bottom or from bottom to top. The return line to the oil reservoir inside the gear pump 2 is also unobstructed, allowing the oil to flow freely to each side of the hydraulic cylinder 4 to compensate for the different volumes of the upper and lower chambers of the hydraulic cylinder 4. When the outboard motor is tilted up or down, if the manual drain valve 32 is open or leaking, the engine will have little or no movement. The oil pressure from the gear pump 2 is supplied to the up-tilt chamber and to the down-tilt chamber through the manual relief valve 32. This facilitates the manual tilting of the outboard motor when the motor 1 fails;
[0030] After the outboard motor leaves the underwater object, the weight of the engine increases the oil pressure between the positioning piston 53 and the impact piston 52. When it rises to the required level, the impact return valve 54 in the impact piston 52 is opened to allow the oil to return to the downward tilt chamber through the impact piston 52. If necessary, additional oil enters the downward tilt chamber through the manifold backflow suction valve 33. In this way, the engine resets to hold the positioning piston 53 and returns to the original operating position, completing the reset circuit after underwater collision, achieving the effect of facilitating the rapid reset circuit after underwater collision.
[0031] Specifically, the upper portion of the confluence seat 31 is fixedly connected to the gear pump 2 , the confluence seat backflow suction valve 33 is connected to the lower portion of the gear pump 2 , and the left side of the confluence seat 31 is fixedly connected to the right side of the hydraulic cylinder 4 .
[0032] Through the above technical solution, the internal circuit connection of the motor 1 is the existing technology, which will not be described in detail here. The motor 1 drives the gear pump 2. After the outboard motor leaves the underwater object, the weight of the engine increases the oil pressure between the positioning piston 53 and the impact piston 52. When it rises to the required level, the impact return valve 54 in the impact piston 52 is opened to allow the oil to return to the downward chamber through the impact piston 52. If necessary, additional oil enters the downward chamber through the manifold backflow suction valve 33. In this way, the engine resets to support the positioning piston 53 and returns to the original operating position, completing the reset circuit after underwater collision.
[0033] Specifically, the pitch push rod 51 is slidably connected to the end cover 6 and the inner wall of the hydraulic cylinder 4 , and the impact piston 52 and the positioning piston 53 are both slidably connected to the inner wall of the hydraulic cylinder 4 .
[0034] Through the above technical solution, in the tilting state, when the trim push rod 51 extends from the hydraulic cylinder 4, the positioning piston 53 makes way or opens the pressure overflow channel. The oil enters this channel from the tilting chamber, and if necessary, the tilting overflow piston 34 opens the tilting overflow valve 35. The tilting overflow valve 35 reduces the pressure of the lifting outboard motor. When the engine is running at normal high speed, the resulting oil pressure is not enough to overcome the thrust of the propeller, limiting the trim range below the pressure overflow outlet. The tilting pressure enters the trim overflow channel and returns to the oil reservoir in the gear pump 2. When the engine speed decreases, or the engine is not in a normal state, the oil pressure can push the trim push rod 51 up into the tilting range.
[0035] Specifically, an O-ring is fixedly connected at the connection between the manual relief valve 32 and the manifold seat 31 , and the tilting relief valve 35 is fixedly connected to the left side of the manifold seat 31 .
[0036] With the above technical solution, to manually tilt the outboard motor, the boat owner needs to turn the manual drain valve 32 out 3 to 5 turns. After the manual drain valve 32 is withdrawn, the internal pipes of the manifold 31 are connected to each other. These channels connect the up-tilt chamber and down-tilt chamber of the hydraulic cylinder 4 and the oil reservoir inside the gear pump 2, so that the engine can be raised or lowered. The action of the trim push rod 51 continues until the manual drain valve 32 is closed, sealing the working fluid in the hydraulic cylinder 4 and the manifold 31. If the outboard motor is to be manually raised, the manual drain valve 32 (tilt) valve is rotated counterclockwise to the fully withdrawn position. In the full (withdrawn) position, the oil in the hydraulic cylinder 4 can flow freely from top to bottom or from bottom to top. The return line to the oil reservoir inside the gear pump 2 is also unobstructed, allowing the oil to flow freely to each side of the hydraulic cylinder 4 to compensate for the different volumes of the upper and lower chambers of the hydraulic cylinder 4. When the outboard motor is tilted up or down, if the manual drain valve 32 is open or leaking, the engine will have little or no movement. Oil pressure from the gear pump 2 is supplied to the up tilt chamber and to the down tilt chamber through the manual drain valve 32. The pressure in both chambers is the same, resulting in little or no movement.
[0037] Specifically, the minimum upward tilt pressure below the hydraulic cylinder 4 is 18200 kPa (2640 psi).
[0038] With the above technical solution, when the weight of the outboard motor and the propeller thrust reach a sufficient level, the pressure in the hydraulic cylinder 4 will increase to the value required by the tilting overflow piston 34. The tilting overflow piston 34 opens the tilting overflow valve 35. The tilting pressure flows into the trimming overflow channel and flows back to the oil reservoir in the gear pump 2. If the outboard motor is within the tilting range (beyond the maximum trim position) when the tilting overflow valve 35 is opened, the outboard motor will fall back to the maximum trim position (trim limit) when the tilting overflow valve 35 is opened.
[0039] Specifically, the right side tilt relief valve 35 tilt relief pressure is 3725-6825 kPa (540-990 psi).
[0040] With the above technical solution, when the hydraulic cylinder 4 is at the maximum stroke position, since the pitch push rod 51 does not move, the pressure in the hydraulic cylinder 4 increases to the set pressure value of the tilt relief valve 35. The pressure moves the tilt relief piston 34, opens the tilt relief valve 35, and returns the oil to the oil reservoir in the gear pump 2 through the channel in the manifold seat 31. The oil flow continues until the tilt up button is released.
[0041] Specifically, the impact relief pressure at the impact relief valve 55 is 8065-9375 kPa (1170-1360 psi).
[0042] Through the above technical solution, the oil reaches the manifold seat 31 and enters the hydraulic cylinder 4. Since the gear pump 2 and the manifold seat backflow suction valve 33 are closed, the oil in the downward tilt chamber is locked in a static state. If the outboard motor hits an underwater object in the forward state, the pitch push rod 51 tries to extend from the hydraulic cylinder 4 as soon as possible. The pressure in the downward tilt chamber and the connected channel of the hydraulic cylinder 4 increases. When the pressure increases to the required level, the impact relief valve 55 in the impact piston 52 opens, allowing the working fluid to flow through the impact piston 52. When the working fluid flows through the impact piston 52, the pitch push rod 51 extends from the hydraulic cylinder 4. The positioning piston 53 generates a vacuum lock because the oil in the upward tilt chamber is locked in a static state. Therefore, the oil passing through the impact piston 52 stays between the positioning piston 53 and the impact piston 52, and falls back upward after completing the underwater collision.
[0043] Although specific embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these specific embodiments without departing from the principles and spirit thereof, and that the scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. A hydraulic cylinder assembly for a power trim device, comprising a power trim device, characterized in that: An electric motor (1) is installed above the power trim device, a gear pump (2) is fixedly connected below the electric motor (1), a manifold assembly (3) is installed below the gear pump (2), a hydraulic cylinder (4) is fixedly connected to one side of the manifold assembly (3), an impact push rod assembly (5) is installed on the inner wall of the hydraulic cylinder (4), and an end cover (6) is fixedly connected above the hydraulic cylinder (4); The confluence seat assembly (3) comprises a confluence seat (31), a manual relief valve (32) being threadedly connected to the right side of the confluence seat (31), a confluence seat backflow suction valve (33) being installed above the confluence seat (31), a tilting overflow piston (34) being slidably connected to the left side of the confluence seat (31), and a tilting overflow valve (35) being arranged on the right side of the tilting overflow piston (34); The impact push rod assembly (5) comprises a pitch push rod (51), an impact piston (52) is fixedly connected below the pitch push rod (51), a positioning piston (53) is arranged below the impact piston (52), an impact return valve (54) is fixedly connected above the impact piston (52), and an impact overflow valve (55) is fixedly connected below the impact piston (52).
2. A hydraulic cylinder assembly for a power trim device according to claim 1, characterized in that: The upper portion of the confluence seat (31) is fixedly connected to the gear pump (2), the confluence seat backflow suction valve (33) is connected to the lower portion of the gear pump (2), and the left side of the confluence seat (31) is fixedly connected to the right side of the hydraulic cylinder (4).
3. The hydraulic cylinder assembly for a power trim device according to claim 1, characterized in that: The pitch push rod (51) is slidably connected to the end cover (6) and the inner wall of the hydraulic cylinder (4), and the impact piston (52) and the positioning piston (53) are both slidably connected to the inner wall of the hydraulic cylinder (4).
4. The hydraulic cylinder assembly for a power trim device according to claim 1, characterized in that: An O-ring is fixedly connected at the connection between the manual relief valve (32) and the flow collector (31), and the tilting relief valve (35) is fixedly connected to the left side of the flow collector (31).
5. The hydraulic cylinder assembly for a power trim device according to claim 1, characterized in that: The minimum upward tilt pressure below the hydraulic cylinder (4) is 18,200 kPa, or 2,640 psi.
6. The hydraulic cylinder assembly for a power trim device according to claim 1, characterized in that: The right side tilting relief valve (35) has a tilting relief pressure of 3725-6825 kPa, i.e. 540-990 psi.
7. The hydraulic cylinder assembly for a power trim device according to claim 1, characterized in that: The impact relief pressure at the impact relief valve (55) is 8065-9375 kPa, i.e. 1170-1360 psi.
Citation Information
Patent Citations
Novel shipboard power consumption liquid rises to stick up device
CN205524906U