Novel hydraulic equipment

Abstract

The utility model belongs to the technical field of hydraulic equipment, and particularly relates to novel hydraulic equipment which comprises a positioning hydraulic cylinder and a fixed hydraulic cylinder, the top end of a piston rod of the positioning hydraulic cylinder is connected with a positioning plate, and the top end of a piston rod of the fixed hydraulic cylinder is connected with a fixed plate; an oil inlet pipe is connected between an oil inlet of the positioning hydraulic cylinder and an oil inlet of the fixed hydraulic cylinder, the outer side of the oil inlet pipe is connected with a butt joint oil pipe and a branching oil pipe, and a one-way valve is arranged on the oil inlet pipe; the two ends of the branching oil pipe are connected with the oil inlet pipe, and the two connecting points are located on the two sides of the one-way valve. A pressure release valve is arranged on the branching oil pipe; according to the device, a pipeline is arranged between the positioning hydraulic cylinder and the fixed hydraulic cylinder for connection, so that when the hydraulic cylinders of the device are connected with a control system, only an oil outlet pipe, a butt joint oil pipe and the control system need to be connected, and the complexity of pipeline connection between the hydraulic cylinders and the single control system is reduced.

Description

Technical Field

[0001] This utility model relates to the field of hydraulic equipment technology, specifically a new type of hydraulic equipment. Background Technology

[0002] Hydraulic equipment is a device that transmits motion, force, and torque by converting the pressure energy and mechanical energy of a liquid medium. It has advantages such as a wide range of energy transmission, stepless speed regulation, smooth operation, and convenient operation, and is widely used in the field of machining.

[0003] When the control system of a hydraulic equipment controls two hydraulic cylinders with different action times, it needs to supply oil to the hydraulic cylinders in stages. The existing technology is to connect the control system to different hydraulic cylinders separately. In this method, when a single control system controls multiple hydraulic cylinders, the connection of the oil pipeline is relatively complicated.

[0004] Therefore, we propose a hydraulic device that first positions and then moves, in order to reduce the complexity of the oil pipeline connection between the control system and multiple hydraulic cylinders. Utility Model Content

[0005] The purpose of this utility model is to provide a new type of hydraulic equipment to solve the problem mentioned in the background art of the complex oil pipeline connection between a single control system and multiple hydraulic cylinders in existing hydraulic equipment that requires positioning before action.

[0006] To achieve the above objectives, this utility model provides the following technical solution: A novel hydraulic device includes a positioning hydraulic cylinder and a fixed hydraulic cylinder. A positioning plate is connected to the top end of the piston rod of the positioning hydraulic cylinder, and a fixing plate is connected to the top end of the piston rod of the fixed hydraulic cylinder. An oil inlet pipe is connected between the oil inlet of the positioning hydraulic cylinder and the oil inlet of the fixed hydraulic cylinder. A connecting oil pipe and a branch oil pipe are connected to the outside of the oil inlet pipe. A one-way valve is installed on the oil inlet pipe. Both ends of the branch oil pipe are connected to the oil inlet pipe, and the two connection points are located on both sides of the one-way valve. A pressure relief valve is installed on the branch oil pipe.

[0007] An oil outlet pipe is connected between the oil outlet of the positioning hydraulic cylinder and the oil outlet of the fixing hydraulic cylinder, and an external interface is provided on the oil outlet pipe.

[0008] Preferably, a one-way throttle valve is provided on the oil outlet pipe, and the number of one-way throttle valves is the same as the sum of the number of positioning hydraulic cylinders and fixed hydraulic cylinders; a one-way throttle valve is provided between the external interface and the positioning hydraulic cylinder and between the external interface and the fixed hydraulic cylinder.

[0009] Preferably, both the positioning plate and the fixing plate include an actuator, a connecting plate, and a docking stud. The docking stud is fixedly connected to the connecting plate, and the actuator is detachably connected to the connecting plate. The top ends of the piston rods of the positioning hydraulic cylinder and the fixing hydraulic cylinder are provided with screw holes, and the docking stud is screwed into the screw holes.

[0010] Preferably, the pressure relief valve includes a cross-shaped housing, an oil-blocking plug is slidably disposed on the inner side of the cross-shaped housing, and both the cross-shaped housing and the oil-blocking plug are provided with oil guide holes; the oil guide holes on both sides of the cross-shaped housing are connected to the tap oil pipe.

[0011] One end of the cross shell is connected to the control shell. The oil stop plug is provided with a guide post at the end near the control shell. The other end of the guide post penetrates the cross shell and extends into the inner side of the control shell, and is connected to a pressure plate. The other end of the pressure plate is connected to a support post. An adjusting plate is sleeved on the outside of the support post. An adjusting spring is connected between the adjusting plate and the pressure plate.

[0012] The other end of the pressure regulating plate is movably connected to an adjusting screw, and the other end of the control housing has a threaded hole, with the adjusting screw screwed into the threaded hole.

[0013] Preferably, the cross housing is connected to an adapter at one end away from the control housing, and a pressure oil pipe is connected to the other side of the adapter. The other end of the pressure oil pipe is connected to a tap oil pipe.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] 1) This device has a pipeline connection between the positioning hydraulic cylinder and the fixed hydraulic cylinder, so that when the hydraulic cylinder of this device is connected to the control system, only the oil outlet pipe and the connecting oil pipe need to be connected to the control system, which reduces the complexity of the pipeline connection between the hydraulic cylinder and the single control system.

[0016] 2) This device is equipped with a pressure relief valve between the positioning hydraulic cylinder and the fixed hydraulic cylinder. When the oil enters the hydraulic cylinder, it first enters the positioning hydraulic cylinder, and the piston rod of the positioning hydraulic cylinder performs the positioning action first. As the oil pressure increases, the oil enters the fixed hydraulic cylinder through the pressure relief valve, and the fixed hydraulic cylinder then performs the action. Finally, the oil pressure rises to the highest level. At this time, the oil pressure in the positioning hydraulic cylinder and the fixed hydraulic cylinder is almost the same, so that the two hydraulic cylinders work together to clamp the workpiece. Attached Figure Description

[0017] Figure 1 This is a top view of the hydraulic equipment of this utility model during operation.

[0018] Figure 2 This is a schematic diagram of the hydraulic equipment structure of this utility model;

[0019] Figure 3 This is a schematic diagram of the connection structure between the hydraulic cylinder and the positioning plate of this utility model;

[0020] Figure 4 This is a cross-sectional view of the pressure relief valve of this utility model.

[0021] In the diagram: 11 Workbench, 12 Edge guard, 13 Workpiece to be operated;

[0022] 21 Positioning hydraulic cylinder, 22 Positioning plate; 31 Fixed hydraulic cylinder, 32 Fixed plate; 221 Connecting stud, 222 Connecting plate, 223 Actuating component;

[0023] 41 Oil outlet pipe, 42 One-way throttle valve; 51 Connecting oil pipe, 52 Oil inlet pipe, 53 One-way valve, 54 Pressure oil pipe, 55 Branch oil pipe, 56 Pressure relief valve;

[0024] 561 Cross-shaped housing, 562 Adapter, 563 Oil-blocking plug, 564 Control housing, 565 Adjusting screw, 566 Pressure plate, 567, 568 Pressure adjusting spring, 569 Support column. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0027] Example:

[0028] Please see Figure 1-4This utility model provides a technical solution: a novel hydraulic device, including a positioning hydraulic cylinder 21, a fixing hydraulic cylinder 31, and a control system (not shown in the figure). The positioning hydraulic cylinder 21, fixing hydraulic cylinder 31, and control system all adopt existing technologies, which will not be elaborated here. A positioning plate 22 is detachably connected to the top of the piston rod of the positioning hydraulic cylinder 21, and a fixing plate 32 is detachably connected to the top of the piston rod of the fixing hydraulic cylinder 31. The positioning plate 22 and fixing plate 32 are detachable and replaceable. During use, a suitable positioning plate 22 and fixing plate 32 can be replaced according to specific work requirements. For example, when positioning and clamping, a slider is provided at the lower end of the positioning plate 22 and fixing plate 32, and a sliding groove is provided at the upper end of the worktable 11. The positioning plate 22 and fixing plate 32 can slide on the worktable 11 through the cooperation of the slider and the sliding groove. The workpiece 13 to be operated rests against the retaining edge 12 of the worktable 11, and the fixing plate 32 and positioning plate 22 press the workpiece 13 to be operated against the retaining edge 12 on one side for fixation (see...). Figure 1 ).

[0029] An oil inlet pipe 52 connects the oil inlet of the positioning hydraulic cylinder 21 and the oil inlet of the fixed hydraulic cylinder 31. A tee is installed on the oil inlet pipe 52, which connects to a connecting oil pipe 51 and a branch oil pipe 55 via two tee connections. The connecting oil pipe 51 is connected to the control system. A check valve 53 is installed on the oil inlet pipe 52, located between the connecting oil pipe 51 and the fixed hydraulic cylinder 31. Oil in the fixed hydraulic cylinder 31 can flow into the connecting oil pipe 51 through the check valve 53. The check valve 53 prevents oil in the positioning hydraulic cylinder 21 from passing through the check valve, while simultaneously allowing oil in both the fixed hydraulic cylinder 31 and the positioning hydraulic cylinder 21 (referring to the oil in the corresponding chambers of their inlets) to be discharged through the connecting oil pipe 51.

[0030] Both ends of the tap oil pipe 55 are connected to the inlet oil pipe 52, and the two connection points are located on both sides of the one-way valve 53. A pressure relief valve 56 is installed on the tap oil pipe 55. When the oil pressure in the positioning hydraulic cylinder 21 (referring to the oil in the cavity corresponding to the inlet) is too high, the oil in the positioning hydraulic cylinder 21 (the oil in the cavity corresponding to the inlet) will enter the fixed hydraulic cylinder 31 through the pressure relief valve 56. An outlet oil pipe 41 is connected between the outlet of the positioning hydraulic cylinder 21 and the outlet of the fixed hydraulic cylinder 31. An external interface is provided on the outlet oil pipe 41, and the external interface is connected to the control system.

[0031] A one-way throttle valve 42 is installed on the oil outlet pipe 41. The number of one-way throttle valves 42 is the same as the sum of the number of positioning hydraulic cylinders 21 and fixed hydraulic cylinders 31. A one-way throttle valve 42 is installed on each pipe connecting the external interface to the positioning hydraulic cylinder 21 and the fixed hydraulic cylinder 31. When oil enters the positioning hydraulic cylinder 21 or the fixed hydraulic cylinder 31 through the oil outlet pipe 41 (entering the cavity corresponding to the oil outlet), the oil pressure is controlled by the one-way throttle valve 42. When the oil in the positioning hydraulic cylinder 21 and the fixed hydraulic cylinder 31 (entering the cavity corresponding to the oil outlet) is discharged from the oil outlet, it can be discharged freely. By controlling the different flow rates of the oil discharged from the oil outlet, the positioning hydraulic cylinder 21 or the fixed hydraulic cylinder 31 can be controlled to perform the return action first.

[0032] Both the positioning plate 22 and the fixing plate 32 include an actuator 223, a connecting plate 222, and a docking stud 221. The docking stud 221 is welded to the connecting plate 222. The actuator 223 and the connecting plate 222 have screw holes, which are connected by bolts to the screw holes, thus connecting the actuator 223 and the connecting plate 222 together. The actuator 223 and the connecting plate 222 are detachable, which facilitates the replacement of the actuator 223. The piston rods of the positioning hydraulic cylinder 21 and the fixing hydraulic cylinder 31 both have screw holes at their top ends. The docking stud 221 of the positioning plate 22 is screwed into the screw hole of the piston rod of the positioning hydraulic cylinder 21, and the docking stud 221 of the fixing plate 32 is screwed into the screw hole of the piston rod of the fixing hydraulic cylinder 31. The screwing connection makes it easy to assemble and disassemble the positioning plate 22 and the fixing plate 32.

[0033] The pressure relief valve 56 includes a cross-shaped housing 561 with four ports, three of which are oil ports. An oil-blocking plug 563 is slidably mounted on the inner side of the cross-shaped housing 561, and a sealing ring is mounted on the outer side of the oil-blocking plug 563. The sealing ring is located near the non-oil port end of the cross-shaped housing 561 to prevent oil from seeping into that end. Both the cross-shaped housing 561 and the oil-blocking plug 563 have oil guide holes, which correspond to the oil guide holes of the oil-blocking plug 563. When aligned, oil can pass through the pressure relief valve 56. The two oil guide holes of the cross-shaped housing 561 are two of the three oil ports. Both oil guide holes on both sides of the cross-shaped housing 561 are connected to the tap oil pipe 55.

[0034] One end of the cross-shaped housing 561 is connected to a control housing 564. A guide post is provided at the end of the oil-blocking plug 563 near the control housing 564. The other end of the guide post extends through the cross-shaped housing 561 into the inner side of the control housing 564. The guide post is elliptical in shape. An elliptical hole corresponding to the guide post is provided on the control housing 564 to prevent rotation of the guide post. A pressure plate 566 is connected to the other end of the guide post, and a support post 569 is connected to the other end of the pressure plate 566. A pressure adjusting plate 567 is fitted onto the outer side of the support post 569. At least two support posts 569 are provided, and the pressure adjusting plate 567 can slide along the support post 569. A pressure adjusting spring 568 connects the pressure adjusting plate 567 and the pressure plate 566. Controlling the initial distance between the pressure adjusting plate 567 and the pressure plate 566 controls the pressure of the oil passing through the pressure relief valve. The other end of the pressure regulating plate 567 is movably connected to an adjusting screw 565. The other end of the control housing 564 has a threaded hole, and the adjusting screw 565 is screwed into the threaded hole. Rotating the adjusting screw 565 will move the pressure regulating plate 567. A scale can be provided on the outside of the adjusting screw 565 to facilitate observation of the initial distance between the pressure regulating plate 567 and the pressure plate 566, thereby observing the pressure of the oil when passing through the pressure relief valve 56. The pressure regulating spring 568 will not come into contact with the oil, preventing corrosion after oil failure and ensuring the service life of the pressure regulating spring 568.

[0035] A cross-shaped housing 561 has an adapter 562 connected to its end furthest from the control housing 564. The adapter 562 is the last oil port of the cross-shaped housing 561. The other side of the adapter 562 is connected to a pressure oil pipe 54, the other end of which is connected to a tap oil pipe 55. Oil pressure is monitored at the adapter 562. When the oil pressure is sufficient, the oil pushes the oil-blocking plug 563 to slide. Once the guide hole on the oil-blocking plug 563 aligns with the guide hole on the cross-shaped housing 561, the oil flows normally through the pressure relief valve 56. The oil does not need to follow the L-shaped channel when passing through the pressure relief valve 56, which reduces the swaying amplitude when the pressure relief valve 56 discharges oil.

[0036] Working principle: When the external monitoring component detects the workpiece 13 to be operated, the oil enters the positioning hydraulic cylinder 21 through the docking oil pipe 51. The piston rod of the positioning hydraulic cylinder 21 pushes the positioning plate 22, and the positioning plate 22 is inserted into the positioning hole on the workpiece 13 to complete the positioning. As the oil pressure in the positioning hydraulic cylinder 21 increases, when the oil pressure reaches the critical value, the oil in the docking oil pipe 51 enters the fixing hydraulic cylinder 31 through the pressure relief valve 56. The piston rod of the fixing hydraulic cylinder 31 pushes the fixing plate 32 to clamp the workpiece 13 to be operated. As the oil pressure continues to increase, the pressure applied by the fixing hydraulic cylinder 31 and the positioning hydraulic cylinder 21 to the fixing plate 32 and the positioning plate 22 will also increase, and the workpiece 13 to be operated will be completely clamped.

[0037] When the clamp is released, the oil in the control system enters the positioning hydraulic cylinder 21 and the fixing hydraulic cylinder 31 through the oil outlet pipe 41 (corresponding to the oil outlet cavity). The oil in the positioning hydraulic cylinder 21 is discharged through the oil inlet pipe 52 and the docking oil pipe 51. The oil in the fixing hydraulic cylinder 31 is discharged through the oil inlet pipe 52, the one-way valve 53, and the docking oil pipe 51 (corresponding to the oil inlet cavity).

[0038] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. It is obvious to those skilled in the art that this utility model is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or basic characteristics of this utility model. Therefore, the embodiments should be considered exemplary and non-limiting in all respects. The scope of this utility model is defined by the appended claims rather than the foregoing description. Therefore, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this utility model, and no reference numerals in the claims should be considered as limiting the scope of the claims.

[0039] Although 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 alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A novel hydraulic device, comprising a positioning hydraulic cylinder (21) and a fixing hydraulic cylinder (31), wherein a positioning plate (22) is connected to the top end of the piston rod of the positioning hydraulic cylinder (21), and a fixing plate (32) is connected to the top end of the piston rod of the fixing hydraulic cylinder (31); characterized in that: An oil inlet pipe (52) is connected between the oil inlet of the positioning hydraulic cylinder (21) and the oil inlet of the fixed hydraulic cylinder (31). A connecting oil pipe (51) and a branch oil pipe (55) are connected to the outside of the oil inlet pipe (52). A one-way valve (53) is provided on the oil inlet pipe (52). Both ends of the branch oil pipe (55) are connected to the oil inlet pipe (52), and the two connection points are located on both sides of the one-way valve (53). A pressure relief valve (56) is provided on the branch oil pipe (55). An oil outlet pipe (41) is connected between the oil outlet of the positioning hydraulic cylinder (21) and the oil outlet of the fixing hydraulic cylinder (31), and an external interface is provided on the oil outlet pipe (41).

2. The novel hydraulic equipment according to claim 1, characterized in that: The oil outlet pipe (41) is equipped with a one-way throttle valve (42), and the number of one-way throttle valves (42) is the same as the sum of the number of positioning hydraulic cylinders (21) and fixed hydraulic cylinders (31); one-way throttle valves (42) are provided between the external interface and the positioning hydraulic cylinder (21) and between the external interface and the fixed hydraulic cylinder (31).

3. The novel hydraulic equipment according to claim 1, characterized in that: The positioning plate (22) and the fixing plate (32) both include an actuator (223), a connecting plate (222) and a docking stud (221). The docking stud (221) is fixedly connected to the connecting plate (222), and the actuator (223) is detachably connected to the connecting plate (222). The piston rod of the positioning hydraulic cylinder (21) and the piston rod of the fixing hydraulic cylinder (31) are both provided with screw holes at their top ends, and the docking stud (221) is screwed into the screw holes.

4. A novel hydraulic device according to claim 1, characterized in that: The pressure relief valve (56) includes a cross shell (561), and an oil blocking plug (563) is slidably provided on the inner side of the cross shell (561). Both the cross shell (561) and the oil blocking plug (563) are provided with oil guide holes. The oil guide holes on both sides of the cross shell (561) are connected to the tap oil pipe (55). One end of the cross shell (561) is connected to the control shell (564). The oil stop plug (563) is provided with a guide post at one end near the control shell (564). The other end of the guide post penetrates the cross shell (561) and extends into the inner side of the control shell (564), and is connected to the pressure plate (566). The other end of the pressure plate (566) is connected to the support column (569). The outer side of the support column (569) is fitted with a pressure adjusting plate (567). A pressure adjusting spring (568) is connected between the pressure adjusting plate (567) and the pressure plate (566). The other end of the pressure regulating plate (567) is movably connected to an adjusting screw (565), and the other end of the control housing (564) is provided with a threaded hole, and the adjusting screw (565) is screwed into the threaded hole.

5. A novel hydraulic device according to claim 4, characterized in that: The cross housing (561) has an adapter (562) connected to one end away from the control housing (564), and a pressure oil pipe (54) is connected to the other side of the adapter (562). The other end of the pressure oil pipe (54) is connected to the tap oil pipe (55).

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