CN111844873A

CN111844873A - Protective device for hydraulic machine

Info

Publication number: CN111844873A
Application number: CN202010654396.7A
Authority: CN
Inventors: 刘兴华
Original assignee: 刘兴华
Current assignee: HANGZHOU SCHGER HYDRAULIC MACHINERY Co.,Ltd.
Priority date: 2020-07-09
Filing date: 2020-07-09
Publication date: 2020-10-30
Anticipated expiration: 2040-07-09
Also published as: CN111844873B

Abstract

The invention relates to the technical field of hydraulic machines and discloses a protective device for a hydraulic machine, which comprises a base, wherein a workbench is fixedly arranged at the top of the base, an upright post is fixedly arranged at the top of the workbench, an oil cylinder device is fixedly arranged at the top of the upright post, a pressing seat is fixedly connected to the bottom of the oil cylinder device, a movable communicating groove is formed in the side surface of the workbench, and a protective plate is movably arranged on the side surface of the workbench. This a protector for hydraulic press, through the cooperation that sets up damping device, cavity elastic rod, L shape cassette and extension spring for press the seat at the in-process that slowly down removes, make the guard plate unblock, and then prevent that the part from appearing broken because of self problem and collapsing out, cause the injury to people's health, and simultaneously, accessible damping device's output drives alarm device's connecting rod motion, makes alarm device report to the police, makes the guard plate remind people to keep away from pressing the seat before the unblock.

Description

Protective device for hydraulic machine

Technical Field

The invention relates to the technical field of hydraulic presses, in particular to a protection device for a hydraulic press.

Background

The hydraulic machine is a machine which uses liquid as a working medium and is manufactured according to the Pascal principle and used for transferring energy to realize various processes, generally comprises a main machine (host), a power system and a hydraulic control system, and is classified into a valve hydraulic machine, a liquid hydraulic machine and an engineering hydraulic machine.

The hydraulic press can be used to forging and pressing, punching press, cold extrusion, alignment, bending, turn-ups, at the in-process of carrying out the hydraulic press operation, when pressing the seat and exert pressure gradually and press on the work piece, or two parts when the hydraulic press is joined in marriage, may be because the material problem of atress inhomogeneous or part, also may be because the work piece is not enough because frictional force with pressing seat and workstation contact surface under the pressure effect simultaneously, lead to the part breakage to collapse out or directly collapse out, lead to hindering people's incident to take place, and carry out the in-process of work at the hydraulic press, the hydraulic press is out of control probably appears, lead to people placing the in-process of processing part, suddenly push down, cause the injury to people, so need a protective apparatus to protect people's safety.

Disclosure of Invention

The invention provides a protective device for a hydraulic machine, which has the advantages that when the hydraulic machine works, the periphery of the hydraulic machine can be automatically protected, and when the hydraulic machine is out of control and is rapidly pressed down, people can be prevented from being injured by manual feeding, and the problems in the background art are solved.

The invention provides the following technical scheme: the utility model provides a protector for hydraulic press, includes the base, the top fixed mounting of base has the workstation, the top fixed mounting of workstation has the stand, the top fixed mounting of stand has hydro-cylinder device, hydro-cylinder device's bottom fixedly connected with presses the seat, movable intercommunication groove has been seted up to the side of workstation, the side movable mounting of workstation has the guard plate, the spout with the surface slip joint of workstation is seted up to the side of guard plate, the bottom fixedly connected with who presses the seat side is located the damping device of movable intercommunication inslot portion.

Preferably, the lateral surface fixedly connected with extension spring of workstation, the other end of extension spring and the side fixed connection of spout, damping device's bottom fixedly connected with presses the seat, the bottom fixed mounting of activity intercommunication inslot chamber has supporting spring, supporting spring's top and the bottom fixed connection who presses the seat, damping device's output swing joint has and presses the cavity elastic rod of the side slip joint of seat, the lateral surface activity hinge of workstation has L shape cassette, the one end of L shape cassette and the side activity joint of cavity elastic rod, the other end of L shape cassette and the side looks joint of spout inner chamber, the bottom fixedly connected with alarm device of damping device output.

Preferably, well cavity has been seted up to damping device's inside, damping device's inside is located the inside fixed mounting of well cavity and has inside cylinder body, the outer fixed surface of inside cylinder body installs solenoid, the inside fixed mounting of inside cylinder body has the baffle, the damping aperture has been seted up to the inside of baffle, the inside top movable mounting that is located the baffle of inside cylinder body has the upper portion piston rod that is connected with the side of pressing the seat, the inside below movable mounting that is located the baffle of inside cylinder body has the lower part piston rod.

Preferably, alarm device includes the device shell, device shell inner chamber movable mounting has the piston board, the top fixedly connected with of piston board and damping device's output fixed connection's connecting rod, the outer fixed surface of device shell is connected with and presses the medial surface sliding connection's of seat damping rubber seat, the fixed intercommunication in bottom of device shell has the air cock, pneumatic sound piece has been placed to the inside of air cock.

Preferably, a flexible anti-collision plate is fixedly bonded inside the protection plate, and a collection bag is fixedly connected to the bottom of the protection plate.

The invention has the following beneficial effects:

1. This a protector for hydraulic press, through the cooperation that sets up damping device, cavity elastic rod, L shape cassette and extension spring for press the seat at the in-process that slowly down removes, make the guard plate unblock, and then prevent that the part from appearing broken because of self problem and collapsing out, cause the injury to people's health, and simultaneously, accessible damping device's output drives alarm device's connecting rod motion, makes alarm device report to the police, makes the guard plate remind people to keep away from pressing the seat before the unblock.

2. This a protector for hydraulic press sets up the damping aperture through the inside at damping device for this hydraulic press is carrying out the material loading and is appearing unusually, when pushing down fast, can be so that damping device becomes a rigid support rod, simultaneously under supporting spring's effect, makes to press the seat to slow down the whereabouts, and then guarantees that people can react, prevents that the hand from being pressed, and supporting spring can protect damping device simultaneously, prevents that damping device from being pressed and explodes.

3. This a protector for hydraulic press sets up solenoid through the outside at the inside cylinder body of damping device for the inside compound liquid of this damping device can adjust the damping coefficient of compound liquid in inside cylinder body under different weather conditions, thereby guarantees damping device's under the different weather conditions effect, thereby guarantees protector's effect.

Drawings

FIG. 1 is a front cross-sectional view of the structure of the present invention;

FIG. 2 is a schematic view of a structural damping device of the present invention;

FIG. 3 is a schematic view of a structural alarm device of the present invention;

FIG. 4 is an enlarged view of the point A in FIG. 1.

In the figure: 1. a base; 2. a support spring; 3. a movable communicating groove; 4. a protection plate; 5. a chute; 6. a work table; 7. a damping device; 701. a hollow cavity; 702. a damping orifice; 703. a lower piston rod; 704. a partition plate; 705. an upper piston rod; 706. an inner cylinder; 707. an electromagnetic coil; 8. an alarm device; 801. a device housing; 802. an air tap; 803. a pneumatic sound chip; 804. a damping rubber seat; 805. a piston plate; 806. a connecting rod; 9. a column; 10. an oil cylinder device; 11. pressing a base; 12. a hollow elastic rod; 13. an L-shaped card holder; 14. a tension spring.

Detailed Description

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 only a part of the embodiments of the present invention, and not all of the embodiments. 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.

Referring to fig. 1-4, a protection device for a hydraulic machine comprises a base 1, a workbench 6 is fixedly installed on the top of the base 1, an upright post 9 is fixedly installed on the top of the workbench 6, an oil cylinder device 10 is fixedly installed on the top of the upright post 9, a pressing seat 11 is fixedly connected to the bottom of the oil cylinder device 10, a movable communicating groove 3 is formed in the side surface of the workbench 6, a protection plate 4 is movably installed on the side surface of the workbench 6, a flexible anti-collision plate is fixedly bonded inside the protection plate 4, a collection bag is fixedly connected to the bottom of the protection plate 4, the flexible anti-collision plate is arranged to buffer the collision of broken parts, the part that the bag made to drop is collected simultaneously, and the spout 5 with the surface slip joint of workstation 6 is seted up to the side of guard plate 4, presses the bottom fixedly connected with of seat 11 side to be located the damping device 7 of activity intercommunication inslot 3 inside.

The outer side surface of the workbench 6 is fixedly connected with a tension spring 14, the other end of the tension spring 14 is fixedly connected with the side surface of the sliding chute 5, the bottom of the damping device 7 is fixedly connected with a pressing seat 11, the bottom of the inner cavity of the movable communicating groove 3 is fixedly provided with a supporting spring 2, the top of the supporting spring 2 is fixedly connected with the bottom of the pressing seat 11, the output end of the damping device 7 is movably connected with a hollow elastic rod 12 which is in sliding clamping connection with the side surface of the pressing seat 11, the outer side surface of the workbench 6 is movably hinged with an L-shaped clamping seat 13, one end of the L-shaped clamping seat 13 is movably clamped with the side surface of the hollow elastic rod 12, the other end of the L-shaped clamping seat 13 is clamped with the side surface of the inner cavity of the sliding chute 5, the hollow elastic rod 12 is similar to a spring, the L-shaped clamping seat 13 can be ensured to lock the protection plate 4, could unblock guard plate 4, so the device makes alarm device 8 report to the police earlier, then just unblock guard plate 4, through setting up damping device 7, cavity elastic rod 12, the cooperation of L shape cassette 13 and extension spring 14, make and press seat 11 at the in-process that slowly moves down, make guard plate 4 unblock, and then prevent that the part from appearing broken the caving because of self problem, cause the injury to people's health, and simultaneously, accessible damping device 7's output drives alarm device 8's connecting rod motion, make alarm device report to the police, make guard plate 4 remind people to keep away from pressing seat 11 before the unblock.

A hollow cavity 701 is arranged inside the damping device 7, an inner cylinder 706 is fixedly arranged inside the hollow cavity 701 inside the damping device 7, an electromagnetic coil 707 is fixedly arranged on the outer surface of the inner cylinder 706, a partition 704 is fixedly arranged inside the inner cylinder 706, a damping small hole 702 is arranged inside the partition 704, an upper piston rod 705 connected with the side surface of the press seat 11 is movably arranged above the partition 704 inside the inner cylinder 706, a lower piston rod 703 is movably arranged below the partition 704 inside the inner cylinder 706, hydrocarbon compounds and micro iron particles are filled inside the inner cylinder 706, the micro iron particles are freely distributed when the electromagnetic coil 707 is not electrified, the micro iron particles are regularly arranged when the electromagnetic coil is electrified, the damping coefficient of the device is changed, and the micro iron particles fill two thirds of the inner cylinder 706 above the partition 704, and then make the hydrocarbon compound in the damping device 7 in the front section of fast operation can guarantee that the guard plate 4 can be unlocked at first, through setting up the damping aperture 702 in the inside of the damping device 7, make the hydraulic press appear unusually in the material loading, when pressing down fast, can make the damping device 7 become a rigid bracing piece, make and press the seat 11 to fall down at a reduced speed under the influence of the supporting spring 2 at the same time, and then guarantee people can react, prevent the hand from being pressed, the supporting spring 2 can protect the damping device 7 at the same time, prevent the damping device 7 from being pressed and exploded, through setting up the electromagnetic coil 707 in the outside of the internal cylinder 706 of the damping device 7, make the compound liquid in the damping device 7 under different weather conditions, can adjust the damping coefficient of compound liquid in the internal cylinder 706, thus guarantee the effect of the damping device 7 under different weather conditions, thereby ensuring the effectiveness of the guard.

The alarm device 8 comprises a device shell 801, a piston plate 805 is movably mounted in an inner cavity of the device shell 801, the top of the piston plate 805 is fixedly connected with a connecting rod 806 fixedly connected with an output end of the damping device 7, the outer surface of the device shell 801 is fixedly connected with a damping rubber seat 804 slidably connected with the inner side surface of the pressing seat 11, the bottom of the device shell 801 is fixedly communicated with an air nozzle 802, and a pneumatic sound piece 803 is placed inside the air nozzle 802.

Working principle, when in use, a person first places a workpiece on the table 6, at which time the hydraulic press is started. The oil cylinder device 10 drives the pressing seat 11 to move downwards, at the same time, the pressing seat 11 drives the upper piston rod 705 at the position of the damping device 7 to move downwards, so that the internal liquid moves downwards, so that the lower piston rod 703 moves downwards, and at the same time, the hollow elastic rod 12 is driven to move, and at the same time, the connecting rod 806 at the position of the alarm device 8 moves downwards, so that the piston plate 805 moves downwards to extrude the air inside the device shell 801 to the air tap 802, so that the air flow blows to the pneumatic sound sheet 803, and the air flow sounds to remind people to leave the pressing seat 11, because of the continuous downward movement of the lower piston rod 703, when the inclination angle of the hollow elastic rod 12 reaches a set value, the other end of the L-shaped clamping seat 13 is separated from the protection plate 4, so that the protection plate 4 is unlocked, and further, the protection plate 4 moves upwards under the driving of the tension spring 14, the side surfaces of the workbench 6 and the pressing seat 11 are covered, so that the part crushing and collapse can be prevented, the damage to the human body can be prevented, after the hydraulic press is used, the pressing seat 11 returns to the original position, people press the protection plate 4, the protection plate 4 is locked by the L-shaped clamping seat 13, then the processing of another part can be continued, when the hydraulic press is in the working process, people can feed materials, when the pressing seat 11 falls down quickly, the upper piston rod acts quickly, the pressure of the inner cylinder 706 on the upper part of the partition 704 is increased, the damping device 7 is changed into a device similar to a steel rod 705, the damping device 7 can be pressed on the supporting spring 2 through the pressing seat 11, the movement of the pressing seat 11 can be buffered, the pressing seat 11 can not be quickly pressed on the workbench 6, the human body can be protected, and in the using process, people can adjust the current of the electromagnetic coil 707 according to needs, and then change the damping coefficient of the composite liquid in the inner cylinder 706, so that the adjustment can be performed according to different weather of different places, and the factor of the running speed of the upper piston rod 705 when the damping device 7 becomes a steel rod can be adjusted according to needs.

It is noted that, herein, relational terms such as first and second, and the like may be 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.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A protector for hydraulic machine, includes base (1), its characterized in that: the utility model discloses a damping device for hydraulic press, including base (1), the top fixed mounting of base (1) has workstation (6), the top fixed mounting of workstation (6) has stand (9), the top fixed mounting of stand (9) has oil cylinder device (10), the bottom fixedly connected with of oil cylinder device (10) presses seat (11), movable intercommunication groove (3) have been seted up to the side of workstation (6), the side movable mounting of workstation (6) has guard plate (4), spout (5) with the surface slip joint of workstation (6) have been seted up to the side of guard plate (4), the bottom fixedly connected with of pressing seat (11) side is located inside damping device (7) of movable intercommunication groove (3).

2. A guard for a hydraulic machine according to claim 1, wherein: the outer side surface of the workbench (6) is fixedly connected with a tension spring (14), the other end of the tension spring (14) is fixedly connected with the side surface of the chute (5), the bottom of the damping device (7) is fixedly connected with a pressing seat (11), the bottom of the inner cavity of the movable communicating groove (3) is fixedly provided with a supporting spring (2), the top of the supporting spring (2) is fixedly connected with the bottom of the pressing seat (11), the output end of the damping device (7) is movably connected with a hollow elastic rod (12) which is in sliding clamping connection with the side surface of the pressing seat (11), the outer side surface of the working table (6) is movably hinged with an L-shaped clamping seat (13), one end of the L-shaped clamping seat (13) is movably clamped with the side surface of the hollow elastic rod (12), the other end of the L-shaped clamping seat (13) is clamped with the side surface of the inner cavity of the sliding chute (5), and the bottom of the output end of the damping device (7) is fixedly connected with an alarm device (8).

3. A guard for a hydraulic machine according to claim 1, wherein: well cavity (701) have been seted up to the inside of damping device (7), the inside fixed mounting that the inside of damping device (7) is located well cavity (701) has inside cylinder body (706), the external fixed surface of inside cylinder body (706) installs solenoid (707), the inside fixed mounting of inside cylinder body (706) has baffle (704), damping aperture (702) have been seted up to the inside of baffle (704), the top movable mounting that the inside of inside cylinder body (706) is located baffle (704) has upper portion piston rod (705) that is connected with the side of pressing seat (11), the below movable mounting that the inside of inside cylinder body (706) is located baffle (704) has lower part piston rod (703).

4. A guard for a hydraulic machine according to claim 2, wherein: alarm device (8) are including device shell (801), device shell (801) inner chamber movable mounting has piston board (805), the top fixedly connected with of piston board (805) and output fixed connection's of damping device (7) connecting rod (806), the surface fixed connection of device shell (801) has damping rubber seat (804) with the medial surface sliding connection who presses seat (11), the fixed intercommunication in bottom of device shell (801) has air cock (802), pneumatic sound piece (803) have been placed to the inside of air cock (802).

5. A guard for a hydraulic machine according to claim 1, wherein: the anti-collision protective device is characterized in that a flexible anti-collision plate is fixedly bonded inside the protective plate (4), and a collecting bag is fixedly connected to the bottom of the protective plate (4).