CN216278717U

CN216278717U - Static pressure moulding line trolley system capable of preventing internal leakage and movement

Info

Publication number: CN216278717U
Application number: CN202122616447.XU
Authority: CN
Inventors: 周绍雷; 吴�民; 孟兆亚; 杨荪
Original assignee: Hefei Casting and Forging Factory of Anhui Heli Co Ltd
Current assignee: Hefei Casting and Forging Factory of Anhui Heli Co Ltd
Priority date: 2021-10-27
Filing date: 2021-10-27
Publication date: 2022-04-12
Anticipated expiration: 2031-10-27

Abstract

The utility model provides a static pressure molding line trolley system capable of preventing internal leakage and movement, which comprises a pushing cylinder, a four-way reversing valve, an oil return line pipeline and a soft oil pipe, wherein a pushing piston in the pushing cylinder divides a cylinder body into a cylinder body rear end and a cylinder body front end, the cylinder body rear end is communicated with a working oil port A of the four-way reversing valve through a rear end oil line pipeline, the oil return line pipeline is communicated with an oil return port T of the four-way reversing valve, and a second external connection interface is arranged on the rear end oil line pipeline; the first external connector and the second external connector are communicated through the soft oil pipe, so that the rear-end oil way pipeline is communicated with the oil return oil way pipeline, the pressure at the rear end of the cylinder body is unloaded into the oil return oil way pipeline through the rear-end oil way pipeline, the pressure balance at the two ends of the push piston is kept, and the push rod does not move after being contracted in place; after the pushing cylinder leaks inwards, the production can still be kept continuous; the convenience is kept in weekend specialty, maintains the propelling movement jar, avoids operating time maintenance to influence production, improves production efficiency.

Description

Static pressure moulding line trolley system capable of preventing internal leakage and movement

Technical Field

The utility model relates to the technical field of hydraulic cylinders, in particular to a static pressure moulding line trolley system capable of preventing internal leakage and movement.

Background

The static pressure molding line driving device comprises a servo motor and a hydraulic oil cylinder, wherein the servo motor comprises a trolley transverse walking driving motor, the hydraulic oil cylinder comprises a pushing cylinder and a supporting cylinder on the trolley, a sand box holding oil cylinder, a lifting oil cylinder and the like, a hydraulic system is a main driving device, the complexity is relatively high, the maintenance and the tracing are particularly important, and the trolley needs to follow in time; when internal leakage occurs in the oil cylinder, the moulding line trolley pushing oil cylinder obviously moves forwards after being contracted in place (continuously moves forwards for about 20mm in 30S and exceeds a set range), so that the next procedure cannot be carried out, and the production cannot be continuously carried out; when the inner leakage occurs inside the oil cylinder, the overhaul time of workers is wasted, the electric furnace needs to be subjected to heat preservation operation, the continuous production of a moulding line is affected, the whole production line has to be interrupted, the production efficiency is seriously affected, and the power resource is seriously wasted.

SUMMERY OF THE UTILITY MODEL

Aiming at the defects of the prior art, the utility model provides the static pressure moulding line trolley system for preventing the internal leakage and the movement.

The utility model solves the technical problems through the following technical means:

prevent static pressure molding line dolly system of internal leakage drunkenness, including propelling movement jar, four-way reversing valve, oil return oil circuit pipeline and flexible oil pipe, cylinder body rear end and cylinder body front end are separated into with the cylinder body to the promotion piston in the propelling movement jar, the cylinder body rear end is through the working fluid port A intercommunication of rear end oil circuit pipeline and four-way reversing valve, oil return oil circuit pipeline and four-way reversing valve's oil return port T intercommunication, the second external interface that connects has on the rear end oil circuit pipeline, oil return oil circuit pipeline has first external interface, first external interface passes through flexible oil pipe intercommunication with the second external interface.

As an improvement of the technical scheme, the diameter of the soft oil pipe is 6 mm.

As an improvement of the above technical solution, the hose pipe includes a first joint, a hose, a filling mechanism, a check valve, and a second joint, and the first joint and the second joint are connected by the hose; the equal fixedly connected with check valve of first joint and second joint inner wall, and the inside of first joint and second joint all is provided with filling mechanism.

As an improvement of the above technical scheme, the filling mechanism comprises a threaded hole, an inner hexagonal screw, a conduit and a returning groove, the surfaces of the first joint and the second joint are both provided with threaded holes, and the inner walls of the first joint and the second joint are both provided with returning grooves; the inner wall of the threaded hole is in threaded connection with an inner hexagonal screw, one end of the guide pipe is fixedly connected with the inner hexagonal screw, and the other end of the guide pipe is connected with the clip groove in an inserted mode.

As an improvement of the above technical solution, the first connector is connected to the first external interface; the second connector is connected with the second external interface.

The utility model has the beneficial effects that: the first external connector and the second external connector are communicated through the soft oil pipe, so that the rear-end oil way pipeline is communicated with the oil return oil way pipeline, the pressure at the rear end of the cylinder body is unloaded into the oil return oil way pipeline through the rear-end oil way pipeline, the pressure balance at the two ends of the push piston is kept, and the push rod does not move after being contracted in place; after the pushing cylinder leaks inwards, the production can still be kept continuous; the convenience is kept in weekend specialty, maintains the propelling movement jar, avoids operating time maintenance to influence production, improves production efficiency.

Drawings

FIG. 1 is an oil circuit diagram of a static pressure molding line trolley system for preventing internal leakage and movement according to an embodiment of the utility model;

FIG. 2 is a schematic view of a flexible oil pipe structure of a hydrostatic molding line trolley system for preventing internal leakage and movement according to an embodiment of the utility model;

FIG. 3 is a cross-sectional view of a flexible oil pipe of a hydrostatic molding line trolley system for preventing internal leakage and play according to an embodiment of the utility model;

FIG. 4 is a schematic structural diagram of a pushing cylinder of the hydrostatic molding line trolley system for preventing internal leakage and movement according to the embodiment of the utility model;

in the figure: 1. a push cylinder; 11. the rear end of the cylinder body; 12. the front end of the cylinder body; 13. pushing the piston; 2. a rear end oil line conduit; 3. a first external interface; 4. a four-way reversing valve; 5. an oil return path conduit; 6. a second external interface; 7. an oil inlet pipeline; 8. a soft oil pipe; 81. a first joint; 82. a hose; 83. A filling mechanism; 831. a threaded hole; 832. an inner hexagonal screw; 833. a conduit; 834. a returning groove; 84. a one-way valve; 85. a second joint.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present.

Example 1

As shown in fig. 1, 2 and 3, the internal leakage and channeling prevention static pressure molding line trolley system of the present embodiment includes a pushing cylinder 1, a four-way reversing valve 4, an oil return path pipeline 5, an oil inlet path pipeline 7 and a soft oil pipe 8, wherein the four-way reversing valve 4 is provided with a working oil port a, a working oil port B, an oil inlet P and an oil return port T, a pushing piston 13 in the pushing cylinder 1 divides the cylinder body into a cylinder body rear end 11 and a cylinder body front end 12, the cylinder body front end 12 is communicated with the working oil port B of the four-way reversing valve 4 through a front end oil path pipeline, and the cylinder body rear end 11 is communicated with the working oil port a of the four-way reversing valve 4 through a rear end oil path pipeline 2; the oil return pipeline 5 is communicated with an oil outlet T of the four-way reversing valve 4, and the oil inlet pipeline 7 is communicated with an oil inlet P of the four-way reversing valve 4; the rear end oil pipeline 2 is provided with a second external interface 6 (shown as MT in fig. 1), the oil return pipeline 5 is provided with a first external interface 3 (shown as MA in fig. 1), and the first external interface 3 is communicated with the second external interface 6 through a soft oil pipe 8.

When the oil cylinder is contracted to a proper position and stops, the pressures in the cylinders at the two ends are unequal, the front end is larger than the rear end, the left force and the right force are equal, and oil leakage (piston seal damage and cylinder inner wall damage) in the cylinder can cause the oil at the end with large pressure to flow to the end with small pressure until the pressures at the two ends are equal; the thrust at the end without the piston rod is larger than that at the end with the piston rod, so that the piston rod automatically moves forwards (at the end with the piston rod); the first external connector 3 and the second external connector 6 are communicated through the soft oil pipe 8, so that the rear end oil way pipeline 2 is communicated with the oil return oil way pipeline 5, the pressure of the rear end 11 of the cylinder body is unloaded into the oil return oil way pipeline 5 through the rear end oil way pipeline 2, the two ends of the push piston 13 are kept pressed and balanced, and the push rod is not moved after being contracted in place; after the pushing cylinder 1 leaks inwards, the production can still be kept continuous; the convenience is kept in the weekend specialty, maintains the propelling movement jar 1, avoids operating time maintenance to influence production, improves production efficiency.

In some embodiments, the diameter of the oil hose 8 is 6mm, as shown in fig. 1 and 2.

The walking speed of the push rod is 0.6mm/S, and the soft oil pipe 8 with the diameter of 6mm is used for not only partially unloading the pressure at the rear end 11 of the cylinder body, but also ensuring that the pressure loss at the rear end 11 of the cylinder body is small during pushing, and preventing the pressure on two sides of the push piston 13 from being unbalanced.

Example 2

As shown in fig. 2 and 3, this embodiment is a modification of the flexible oil tube 8 in embodiment 1; comprises a soft oil pipe 8;

the hose pipe 8 comprises a first joint 81, a hose 82, a filling mechanism 83, a one-way valve 84 and a second joint 85, wherein the first joint 81 and the second joint 85 are connected through the hose 82; the inner walls of the first joint 81 and the second joint 85 are fixedly connected with a one-way valve 84, and the interiors of the first joint 81 and the second joint 85 are provided with a filling mechanism 83.

In the installation process of the soft oil pipe 8, the filling mechanism 83 in the first joint 81 and the second joint 85 is opened to keep the soft oil pipe 8 in the vertical direction, the filling mechanism 83 in the joint at the lower end of the soft oil pipe 8 is filled with hydraulic oil until the hydraulic oil overflows from the filling mechanism 83 in the joint at the upper end of the soft oil pipe 8, air in the soft oil pipe 8 is discharged, the air is prevented from entering the pushing cylinder 1 along the rear end oil way pipeline 2, and the shaking caused by unbalanced pressure in the working process of the pushing cylinder 1 is avoided; the check valve 84 is normally configured such that gas and fluid can only enter the hose 82 through the first connector 81 or the second connector 85, thereby preventing leakage of hydraulic oil when hydraulic oil is injected into the hose 82.

As shown in fig. 2 and 3, in some embodiments, the filling mechanism 83 includes a threaded hole 831, an inner hexagonal screw 832, a conduit 833 and a circular groove 834, the surfaces of the first connector 81 and the second connector 85 are provided with the threaded hole 831, and the inner walls of the first connector 81 and the second connector 85 are provided with the circular groove 834; the inner wall of the threaded hole 831 is in threaded connection with an inner hexagonal screw 832, one end of the guide pipe 833 is fixedly connected with the inner hexagonal screw 832, and the other end of the guide pipe 833 is inserted into the inverted groove 834.

The guide pipe 833 is pulled out from the square groove 834 by rotating the inner hexagonal screw 832, so that hydraulic oil can be conveniently filled into the guide pipe 833, and gas can be conveniently discharged; when the pipe 833 and the return groove 834 are in a plugged state, the sealing property after the connection of the first joint 81 and the second joint 85 is maintained, and the leakage of the pressure oil from the pipe 833 is prevented.

As shown in fig. 2 and 3, in some embodiments, the first connector 81 is connected to the first external interface 3; the second connector 85 is connected to the second external interface 6.

In the actual installation process, the first external interface 3 is located above the second external interface 6, in the installation process, after the first connector 81 and the first external interface 3 are connected, the filling mechanisms 83 on the surfaces of the first connector 81 and the second connector 85 are opened, hydraulic oil is injected into the filling mechanisms 83 on the second connector 85 until the hydraulic oil is discharged from the filling mechanisms 83 on the first external interface 3, air in the hose 82 is discharged, and the pushing cylinder 1 is prevented from shaking; meanwhile, after the first connector 81 is connected with the first external connector 3 and the second connector 85 is connected with the second external connector 6, the check valve 84 is opened by the first external connector 3 and the second external connector 6, and the one-way passing performance of the check valve 84 is damaged.

It is noted that, in this document, relational terms such as first and second, and the like, if any, are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.

Claims

1. Prevent static pressure molding line dolly system of interior hourglass drunkenness, its characterized in that: including propelling movement jar (1), four-way reversing valve (4), oil return oil circuit pipeline (5) and soft oil pipe (8), cylinder body rear end (11) and cylinder body front end (12) are separated into with the cylinder body to promotion piston (13) in propelling movement jar (1), cylinder body rear end (11) communicate through rear end oil circuit pipeline (2) and the working fluid port A of four-way reversing valve (4), oil return oil circuit pipeline (5) communicate with the oil return port T of four-way reversing valve (4), second external interface (6) have on rear end oil circuit pipeline (2), oil return oil circuit pipeline (5) have first external interface (3), first external interface (3) communicate through soft oil pipe (8) with second external interface (6).

2. The internal leakage and play prevention static pressure molding line trolley system according to claim 1, characterized in that: the diameter of the soft oil pipe (8) is 6 mm.

3. The internal leakage and play prevention static pressure molding line trolley system according to claim 1, characterized in that: the hose pipe (8) comprises a first connector (81), a hose (82), a filling mechanism (83), a one-way valve (84) and a second connector (85), and the first connector (81) and the second connector (85) are connected through the hose (82); the inner walls of the first joint (81) and the second joint (85) are fixedly connected with one-way valves (84), and the inside of the first joint (81) and the inside of the second joint (85) are provided with filling mechanisms (83).

4. The internal leakage and play prevention static pressure molding line trolley system according to claim 3, characterized in that: the filling mechanism (83) comprises a threaded hole (831), an inner hexagonal screw (832), a conduit (833) and a returning groove (834), the surfaces of the first joint (81) and the second joint (85) are respectively provided with the threaded hole (831), and the inner walls of the first joint (81) and the second joint (85) are respectively provided with the returning groove (834); the inner wall of the threaded hole (831) is in threaded connection with an inner hexagonal screw (832), one end of the guide pipe (833) is fixedly connected with the inner hexagonal screw (832), and the other end of the guide pipe is inserted into the clip groove (834).

5. The internal leakage and play prevention static pressure molding line trolley system according to claim 3, characterized in that: the first connector (81) is connected with the first external interface (3); the second connector (85) is connected with the second external interface (6).