CN112901606B

CN112901606B - Hydraulic mechanical equipment

Info

Publication number: CN112901606B
Application number: CN202110131062.6A
Authority: CN
Inventors: 李占群
Original assignee: Qingdao Haoyuan Yiyou Forging Machinery Co ltd
Current assignee: Qingdao Haoyuan Yiyou Forging Machinery Co ltd
Priority date: 2021-01-30
Filing date: 2021-01-30
Publication date: 2022-10-18
Anticipated expiration: 2041-01-30
Also published as: CN112901606A

Abstract

The invention discloses hydraulic mechanical equipment, which belongs to the technical field of hydraulic mechanical equipment and comprises a bearing frame, a cylinder body, an oil tank, a reflux device, a preheating device, a clearing device and a feeding device, wherein the cylinder body is clamped on the bearing frame, a piston is arranged in an inner cavity of the cylinder body, a push rod is fixedly connected to the piston, the oil tank is arranged on the top of the bearing frame, the reflux device is arranged on the bearing frame and is respectively communicated with the cylinder body and the oil tank, the preheating device is arranged at the lower half part in the oil tank, the clearing device is arranged in the oil tank, the feeding device is clamped in the bearing frame and is respectively communicated with the preheating device and the cylinder body in the oil tank. According to the invention, through mutual operation among the devices, the hydraulic oil in the oil tank can be uniformly heated, and the filtered metal impurities can be adsorbed, so that the hydraulic oil normally flows, and the working efficiency of the hydraulic mechanical equipment is improved.

Description

Hydraulic mechanical equipment

Technical Field

The invention relates to the technical field of hydraulic mechanical equipment, in particular to hydraulic mechanical equipment.

Background

The hydraulic cylinder is a hydraulic actuator which converts hydraulic energy into mechanical energy and makes linear reciprocating motion. Its simple structure, the reliable operation, mainly used realizes reciprocating motion, certain deceleration capacity has, there is not transmission clearance, the motion is comparatively steady, the normal operating oil temperature of current pneumatic cylinder is about 40 degrees centigrade, but the start-up oil temperature of current pneumatic cylinder is generally less than 40 degrees centigrade, and under the lower condition of temperature, the hydraulic oil viscosity is big, the mobility is poor, lead to pneumatic cylinder initial action slow, influence the work efficiency of current pneumatic cylinder, moreover, can get into the foreign matter in the current pneumatic cylinder, and the foreign matter is very easily pressed from both sides between the inner wall of piston and pneumatic cylinder body, lead to appearing the mar on the inner wall of cylinder body, lead to the leakproofness of current pneumatic cylinder to reduce.

However, in the hydraulic mechanical equipment with foreign matter removal and preheating functions in the prior art, the filtering device is arranged for filtering, but the filtering device is easily blocked by the filtered impurities, so that the flowability of hydraulic oil is poor, the operation of the hydraulic mechanical equipment is affected, the heating effect of the hydraulic oil in the oil tank is poor, and the temperature of the hydraulic oil in the oil tank is different, so that the work of the hydraulic mechanical equipment is also affected.

Disclosure of Invention

The embodiment of the invention provides hydraulic mechanical equipment to solve the technical problems in the background technology.

The embodiment of the invention adopts the following technical scheme: the utility model provides a hydraulic mechanical equipment, includes bearing frame, cylinder body, oil tank, reflux unit, preheating device, clearing device and feeding device, the bearing frame sets up on the horizontal plane, the cylinder body card is established on the bearing frame, the inner chamber of cylinder body is equipped with the piston, fixedly connected with push rod on the piston, the oil tank sets up on the top of bearing frame, reflux unit installs on the bearing frame and reflux unit is linked together with cylinder body and oil tank respectively, preheating device sets up the lower half in the oil tank, clearing device sets up in the oil tank and installs on preheating device, the feeding device card is established in the bearing frame and feeding device is linked together with preheating device and cylinder body in the oil tank respectively.

Further, reflux unit includes first backwash pump, second backwash pump, two first backwash pipes and two second backwash pipes, first backwash pump and second backwash pump symmetry are installed on the top of bearing frame, two the one end of first backwash pipe is installed respectively on first backwash pump and is linked together respectively with first backwash pump, two the other end of first backwash pipe is linked together with the first half of oil tank and cylinder inner piston respectively, two the one end of second backwash pipe is installed respectively on the second backwash pump and is linked together respectively with the second backwash pump, two the other end of second backwash pipe is linked together with the lower half of oil tank and cylinder inner piston respectively.

Further, preheating device includes ring board, drum, biaxial motor, (mixing) shaft, electric heating pipe, temperature sensor and a plurality of puddler, the ring integrated circuit board is established in the oil tank, be equipped with a plurality of overflow holes on the ring board, the drum is vertical setting on the top of ring board, biaxial motor sets up in the drum and one of them main shaft in the biaxial motor runs through the vertical downward setting of ring board, the (mixing) shaft sets up on one of them main shaft of biaxial motor, and is a plurality of the puddler overlaps respectively and establishes on the (mixing) shaft, electric heating pipe is the annular and sets up and installs on the interior diapire of oil tank, temperature sensor sets up on the inside wall in the oil tank and is located electric heating pipe's top.

Further, the clearing device includes filter, quill, purge tube and three electro-magnet, the filter setting is established directly over the ring board and the cover is established on the drum in the oil tank, be equipped with a plurality of filtration pores of crossing on the filter, the purge tube card is established in the middle of ring board and filter, the quill cover is established on the drum and the quill is connected with another main shaft of biaxial motor, and is three the electro-magnet is the circumference and distributes on the outer wall of quill and the bottom of three electro-magnet contacts at the top of filter respectively.

Furthermore, the feeding device comprises a three-way pipe, a first feeding pipe and a second feeding pipe, the three-way pipe is clamped in the bearing frame, one end of the three-way pipe is communicated with the bottom of the oil tank, one ends of the first feeding pipe and the second feeding pipe are respectively communicated with the other two ends of the three-way pipe, the other end of the first feeding pipe is communicated with the upper half part of the piston in the cylinder body, and the other end of the second feeding pipe is communicated with the lower half part of the piston in the cylinder body.

Furthermore, the first feeding pipe and the second feeding pipe are both provided with feeding control valves.

Furthermore, be equipped with the sealed lid of detachable on the oil tank, still be equipped with the heat preservation cotton on the oil tank wall, still be equipped with the sealing strip that is the ring shape on the oil tank, just the sealing strip cover is established at sealed lid and oil tank contact department.

The embodiment of the invention adopts at least one technical scheme which can achieve the following beneficial effects:

firstly, the hydraulic oil heating device can uniformly heat hydraulic oil in the oil tank and adsorb filtered metal impurities through mutual operation of all the devices, so that the hydraulic oil normally flows, and the working efficiency of hydraulic mechanical equipment is improved.

Secondly, when hydraulic oil enters the oil tank, the temperature is sensed through the arranged temperature sensor, when the temperature of the hydraulic oil is lower than the required temperature, the hydraulic oil in the oil tank is heated to the required temperature through the electric heating pipe, and when the hydraulic oil is heated, the stirring shaft on one main shaft of the double-shaft motor is driven through the work of the double-shaft motor to drive the stirring shafts on the stirring shaft to rotate, so that the hydraulic oil is stirred, the hydraulic oil with different temperatures in the oil tank is uniformly stirred and mixed, the heating effect of the hydraulic oil is improved, the temperature rising speed of the hydraulic oil can be accelerated, and the working efficiency of hydraulic mechanical equipment is ensured.

Thirdly, when the double-shaft motor in the preheating device works, the sleeve shaft is connected with the other main shaft of the double-shaft motor, so that the sleeve shaft can be driven to move, the three electromagnets on the outer wall of the sleeve shaft can be driven to rotate, the three electromagnets are respectively electrified while rotating, metal impurities in hydraulic oil can be adsorbed, the metal impurities can be prevented from being concentrated on the filter plate, the hydraulic oil can be ensured to normally filter and flow, hydraulic mechanical equipment is protected, and the problem that the metal impurities in the hydraulic oil cause abrasion to the hydraulic mechanical equipment is solved.

According to the invention, the oil tank can be conveniently opened through the detachable sealing cover, and the clearing device can be conveniently taken out for cleaning, so that the metal impurities adsorbed on the electromagnet can be conveniently recovered, the hydraulic oil can be conveniently supplemented into the oil tank, the heat preservation cotton arranged in the oil tank can preserve heat of the oil tank, and the problem of overlarge temperature loss is avoided.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and do not limit the invention. In the drawings:

FIG. 1 is a first perspective view of the present invention;

FIG. 2 is a schematic perspective view of the present invention;

FIG. 3 is a cross-sectional view of the present invention;

FIG. 4 is a perspective cross-sectional view of the present invention;

FIG. 5 is a partial perspective view of the present invention;

fig. 6 is a schematic perspective view of the preheating device and the removing device of the present invention.

Reference numerals

The device comprises a bearing frame 1, a cylinder body 2, a piston 20, a push rod 21, an oil tank 3, a sealing cover 30, heat-insulating cotton 31, a sealing strip 32, a backflow device 4, a first backflow pump 40, a second backflow pump 41, a first backflow pipe 42, a second backflow pipe 43, a preheating device 5, a circular ring plate 50, a cylinder 51, a double-shaft motor 52, a stirring shaft 53, an electric heating pipe 54, a temperature sensor 55, a stirring rod 56, a clearing device 6, a filtering plate 60, a sleeve shaft 61, a purifying pipe 62, an electromagnet 63, a feeding device 7, a three-way pipe 70, a first feeding pipe 71, a second feeding pipe 72 and a feeding control valve 8.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be clearly and completely described below with reference to the specific embodiments of the present invention and the accompanying drawings. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the 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.

The technical solutions provided by the embodiments of the present invention are described in detail below with reference to the accompanying drawings.

Referring to fig. 1 to 6, an embodiment of the present invention provides a hydraulic mechanical device, including a bearing frame 1, a cylinder 2, an oil tank 3, a backflow device 4, a preheating device 5, a removing device 6, and a feeding device 7, where the bearing frame 1 is disposed on a horizontal plane, the cylinder 2 is clamped on the bearing frame 1, an inner cavity of the cylinder 2 is provided with a piston 20, the piston 20 is fixedly connected with a push rod 21, the oil tank 3 is disposed on a top of the bearing frame 1, the backflow device 4 is mounted on the bearing frame 1, the backflow device 4 is respectively communicated with the cylinder 2 and the oil tank 3, the preheating device 5 is disposed at a lower half portion of the oil tank 3, the removing device 6 is disposed in the oil tank 3 and mounted on the preheating device 5, the feeding device 7 is clamped in the bearing frame 1, the feeding device 7 is respectively communicated with the preheating device 5 and the cylinder 2 in the oil tank 3, a working state of the hydraulic mechanical device can be controlled by matching the set backflow device 4 and the feeding device 7, hydraulic mechanical device can preheat hydraulic oil in the oil tank 3, thereby preventing a viscosity of the hydraulic mechanical device from being too low, and impurities from affecting a working efficiency of the mechanical device, and preventing the mechanical device from being worn by the metal impurities, and avoiding the mechanical device, and preventing the mechanical device from being disposed hydraulic mechanical device from being worn.

Referring to fig. 2, 3 and 4, specifically, the backflow device 4 includes a first backflow pump 40, a second backflow pump 41, two first backflow pipes 42 and two second backflow pipes 43, the first backflow pump 40 and the second backflow pump 41 are symmetrically installed on the top of the carrying frame 1, one end of each of the two first backflow pipes 42 is installed on the first backflow pump 40 and is respectively communicated with the first backflow pump 40, the other end of each of the two first backflow pipes 42 is respectively communicated with the oil tank 3 and the upper half portion of the piston 20 in the cylinder 2, one end of each of the two second backflow pipes 43 is installed on the second backflow pump 41 and is respectively communicated with the second backflow pump 41, the other end of each of the two second backflow pipes 43 is respectively communicated with the oil tank 3 and the lower half portion of the piston 20 in the cylinder 2, when the push rod 21 needs to be extended, the oil in the lower half portion of the piston 20 in the cylinder 2 is pumped into the oil tank 3 from the two second backflow pipes 43 by the second backflow pump 41, according to the temperature sensed by the temperature sensor 55 in the preheating device 5, when the temperature of the hydraulic oil is lower than the required temperature, the preheating device 5 works, the preheating device 5 drives the cleaning device 6 to work, so as to filter and preheat the hydraulic oil in the oil tank 3, after the hydraulic oil is filtered and heated, the filtered and heated hydraulic oil in the oil tank 3 flows to the first feeding pipe 71 from the three-way pipe 70 by opening the feeding control valve 8 on the first feeding pipe 71 in the feeding device 7, and then flows into the upper half part of the piston 20 in the cylinder body 2 from the first feeding pipe 71, the piston 20 moves downwards by the change of the hydraulic oil in the cylinder body 2, so as to drive the push rod 21 to extend downwards, similarly, when the push rod 21 needs to retract, the oil in the upper half part of the piston 20 in the cylinder body 2 is pumped into the oil tank 3 from the two first return pipes 42 by the first return pump 40, according to the temperature sensor 55 perception temperature in preheating device 5, when the hydraulic oil temperature is less than the required temperature, rethread preheating device 5 works, preheating device 5 can drive clearing device 6 work, the realization is filtered the preheating to the hydraulic oil in the oil tank 3, after filtering the heating to hydraulic oil, feed control valve 8 on the second filling tube 72 in the rethread opening feeding device 7, make the hydraulic oil that the filtration in the oil tank 3 was heated flow to second filling tube 72 from three-way pipe 70, again flow into the lower half of piston 20 in the cylinder body 2 from second filling tube 72, change through the hydraulic oil in the cylinder body 2, make piston 20 rebound, thereby it contracts to drive push rod 21 in to cylinder body 2.

Referring to fig. 3, fig. 4, fig. 5 and fig. 6, specifically, the preheating device 5 includes a circular ring plate 50, a cylinder 51, a dual-axis motor 52, a stirring shaft 53, an electric heating pipe 54, a temperature sensor 55 and a plurality of stirring rods 56, the circular ring plate 50 is clamped in the oil tank 3, the circular ring plate 50 is provided with a plurality of overflow holes, the cylinder 51 is vertically arranged on the top of the circular ring plate 50, the dual-axis motor 52 is arranged in the cylinder 51, one of the main shafts of the dual-axis motor 52 penetrates through the circular ring plate 50 and is vertically arranged downwards, the stirring shaft 53 is arranged on one of the main shafts of the dual-axis motor 52, the stirring rods 56 are respectively sleeved on the stirring shaft 53, the electric heating pipe 54 is annularly arranged and is arranged on the inner bottom wall of the oil tank 3, the temperature sensor 55 is arranged on the inner side wall of the oil tank 3 and located above the electric heating pipe 54, the type of the temperature sensor 55 is T10S-B-HW, when hydraulic oil flows from the preheating device 6 to the preheating device 5, the oil tank 55, when the temperature of the hydraulic oil is lower than a required HW, the temperature of the hydraulic oil, the hydraulic oil tank is lower than that the hydraulic heating motor 54, the hydraulic heating motor 52, the hydraulic oil tank, the hydraulic oil heating efficiency of the hydraulic oil tank is increased, the hydraulic oil heating motor is increased, and the hydraulic oil heating motor 52, and the hydraulic oil heating efficiency of the hydraulic oil heating motor is increased, and the hydraulic oil heating motor 52, and the hydraulic oil heating efficiency is increased, and the hydraulic oil heating efficiency of the hydraulic oil heating motor is increased.

Referring to fig. 3, 4, 5 and 6, specifically, the removing device 6 includes a filter plate 60, a sleeve shaft 61, a purifying pipe 62 and three electromagnets 63, the filter plate 60 is disposed directly above the ring plate 50 and sleeved on the cylinder 51 in the oil tank 3, the filter plate 60 is provided with a plurality of filter holes, the purifying pipe 62 is clamped between the ring plate 50 and the filter plate 60, the filtering effect of the hydraulic oil is further improved by the disposed purifying pipe 62, the sleeve shaft 61 is sleeved on the cylinder 51 and the sleeve shaft 61 is connected to another main shaft of the double-shaft motor 52, the three electromagnets 63 are circumferentially distributed on the outer wall of the sleeve shaft 61 and the bottoms of the three electromagnets 63 are respectively in contact with the top of the filter plate 60, when the double-shaft motor 52 in the preheating device 5 works, the sleeve shaft 61 is connected to another main shaft of the double-shaft motor 52, so as to drive the sleeve shaft 61 to move, and drive the three electromagnets 63 on the outer wall of the sleeve shaft 61 to rotate, and the three electromagnets 63 are respectively energized while rotating, thereby realizing the adsorption of the metal impurities in the hydraulic oil, and avoiding the metal impurities from being concentrated on the filter plate 60, and ensuring the normal flow of the filter plate 60.

Referring to fig. 3, 4 and 5, specifically, the feeding device 7 includes a three-way pipe 70, a first feeding pipe 71 and a second feeding pipe 72, the three-way pipe 70 is clamped in the carriage 1, one end of the three-way pipe 70 is communicated with the bottom of the oil tank 3, one ends of the first feeding pipe 71 and the second feeding pipe 72 are respectively communicated with the other two ends of the three-way pipe 70, the other end of the first feeding pipe 71 is communicated with the upper half portion of the piston 20 in the cylinder 2, the other end of the second feeding pipe 72 is communicated with the lower half portion of the piston 20 in the cylinder 2, the heated hydraulic oil is conveniently discharged through the provided three-way pipe 70, and the hydraulic oil can be conveniently added to the upper half portion and the lower half portion of the piston 20 in the cylinder 2 through the provided first feeding pipe 71 and the second feeding pipe 72.

Specifically, all install reinforced control valve 8 on first filling pipe 71 and the second filling pipe 72, can control the oil mass that the hydraulic oil after the heating got into in cylinder body 2 through reinforced control valve 8 of installing on first filling pipe 71 and second filling pipe 72.

Specifically, be equipped with the sealed lid 30 of detachable on the oil tank 3, still be equipped with the heat preservation cotton 31 on the 3 walls of oil tank, the heat preservation cotton 31 through setting up can keep warm to oil tank 3, has avoided the too big problem of temperature loss, still be equipped with the sealing strip 32 that is the annular shape on the oil tank 3, just sealing strip 32 cover is established in sealed

lid

30 and 3 contact departments of oil tank, has improved the leakproofness of oil tank 3 through the sealing strip 32 that sets up, can be convenient for open oil tank 3 through the sealed lid 30 of detachable that sets up, conveniently takes out clearing device 6 and clears up to be convenient for retrieve absorbent metallic impurity on the electro-magnet 63, and be convenient for supply hydraulic oil in the oil tank 3.

The working principle of the invention is as follows: when the hydraulic mechanical equipment is used, the oil liquid at the lower half part of the piston 20 in the cylinder 2 is pumped into the oil tank 3 from the two second return pipes 43 through the second return pump 41 for filtering and heating, the temperature is sensed through the arranged temperature sensor 55, when the temperature of the hydraulic oil is lower than the required temperature, the hydraulic oil in the oil tank 3 is heated to the required temperature through the electric heating pipe 54, and when the hydraulic oil is heated, the double-shaft motor 52 works to drive the stirring shaft 53 on one main shaft of the double-shaft motor 52 and drive the stirring rods 56 on the stirring shaft 53 to rotate, so that the hydraulic oil is stirred and mixed uniformly, the hydraulic oil with different temperatures in the oil tank 3 is stirred and mixed uniformly, when the double-shaft motor 52 in the preheating device 5 works, the sleeve shaft 61 is connected with the other main shaft of the double-shaft motor 52, so as to drive the sleeve shaft 61 to move, and then drive the three electromagnets 63 on the outer wall of the sleeve shaft 61 to rotate, when the hydraulic oil cylinder is rotated, the three electromagnets 63 are respectively electrified, so that the metal impurities in the hydraulic oil are adsorbed, the metal impurities can be prevented from being concentrated on the filter plate 60, the hydraulic oil can be ensured to normally filter and flow, the feeding control valve 8 on the first feeding pipe 71 in the feeding device 7 is opened, the filtered and heated hydraulic oil in the oil tank 3 flows to the first feeding pipe 71 from the three-way pipe 70, then flows into the upper half part of the piston 20 in the cylinder body 2 from the first feeding pipe 71, the piston 20 moves downwards through the change of the hydraulic oil in the cylinder body 2, so that the push rod 21 is driven to extend downwards, similarly, when the push rod 21 needs to retract, the oil in the upper half part of the piston 20 in the cylinder body 2 is pumped into the oil tank 3 from the two first return pipes 42 through the first return pump 40, similarly, according to the temperature sensed by the temperature sensor 55 in the preheating device 5, when the hydraulic oil temperature is lower than the required temperature, the work of the preheating device 5 is carried out, the preheating device 5 can drive the clearing device 6 to work, the hydraulic oil in the oil tank 3 is filtered and preheated, after the hydraulic oil is filtered and heated, the feeding control valve 8 on the second feeding pipe 72 in the feeding device 7 is opened, the hydraulic oil which is filtered and heated in the oil tank 3 flows to the second feeding pipe 72 from the three-way pipe 70, the hydraulic oil flows into the lower half part of the piston 20 in the cylinder body 2 from the second feeding pipe 72, the piston 20 moves upwards through the change of the hydraulic oil in the cylinder body 2, the push rod 21 is driven to retract into the cylinder body 2, the hydraulic oil in the cylinder body 2 can be ensured to be free of impurities in the work, the working efficiency of the hydraulic mechanical equipment can be ensured, and the service life of the hydraulic mechanical equipment can be prolonged.

The above description is only an example of the present invention, and is not intended to limit the present invention. Various modifications and alterations to this invention will become apparent to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the scope of the claims of the present invention.

Claims

1. A hydraulic mechanical apparatus, characterized in that: comprises a bearing frame (1), a cylinder body (2), an oil tank (3), a reflux device (4), a preheating device (5), a clearing device (6) and a feeding device (7), wherein the bearing frame (1) is arranged on a horizontal plane, the cylinder body (2) is clamped on the bearing frame (1), a piston (20) is arranged in an inner cavity of the cylinder body (2), a push rod (21) is fixedly connected onto the piston (20), the oil tank (3) is arranged on the top of the bearing frame (1), the reflux device (4) is arranged on the bearing frame (1), the reflux device (4) is respectively communicated with the cylinder body (2) and the oil tank (3), the preheating device (5) is arranged on the lower half part in the oil tank (3), the clearing device (6) is arranged in the oil tank (3) and is arranged on the preheating device (5), the feeding device (7) is clamped in the bearing frame (1), the feeding device (7) is respectively communicated with the preheating device (5) and the cylinder body (2) in the oil tank (3), the reflux device (4) comprises a first reflux pipe (40), a second reflux pipe (41), two second reflux pipes (42) and a second reflux pump (41), the second reflux pipe (43) and a second reflux pump (41) are symmetrically arranged on the top of the bearing frame (1), one end of each of two first reflux pipes (42) is respectively arranged on the first reflux pump (40) and is respectively communicated with the first reflux pump (40), the other end of each of the two first reflux pipes (42) is respectively communicated with the oil tank (3) and the upper half part of the piston (20) in the cylinder body (2), one end of each of two second reflux pipes (43) is respectively arranged on the second reflux pump (41) and is respectively communicated with the second reflux pump (41), the other end of each of the two second reflux pipes (43) is respectively communicated with the oil tank (3) and the lower half part of the piston (20) in the cylinder body (2), a preheating device (5) comprises a circular ring plate (50), a cylinder (51), a double-shaft motor (52), a stirring shaft (53), an electric heating pipe (54), a temperature sensor (55) and a plurality of stirring rods (56), the circular ring plate (50) is clamped in the oil tank (3), a plurality of holes are arranged on the circular ring plate (50), the circular ring plate (51) is vertically arranged on the top of the circular ring plate (50), the double-shaft motor (52) is arranged in the cylinder (51), one of the double-shaft motor (52) and one of the double-shaft motor (52) penetrates through the main shaft (52) and is arranged on the main shaft (52), electric heating pipe (54) are the annular setting and install on the interior diapire of oil tank (3), temperature sensor (55) set up on the inside wall in oil tank (3) and are located the top of electric heating pipe (54), clearing device (6) include filter (60), quill (61), purge tube (62) and three electro-magnet (63), filter (60) set up directly over ring plate (50) and establish on drum (51) in oil tank (3), be equipped with a plurality of filtration pores on filter (60), purge tube (62) card is established in the middle of ring plate (50) and filter (60), quill (61) cover is established on drum (51) and quill (61) are connected with another main shaft of biaxial motor (52), three electro-magnet (63) are the circumference and distribute on the outer wall of quill (61) and the bottom of three electro-magnet (63) contacts respectively the top of filter (60).

2. A hydromechanical apparatus according to claim 1, wherein: the feeding device (7) comprises a three-way pipe (70), a first feeding pipe (71) and a second feeding pipe (72), the three-way pipe (70) is clamped in the bearing frame (1), one end of the three-way pipe (70) is communicated with the bottom of the oil tank (3), one ends of the first feeding pipe (71) and the second feeding pipe (72) are respectively communicated with the other two ends of the three-way pipe (70), the other end of the first feeding pipe (71) is communicated with the upper half part of the piston (20) in the cylinder body (2), and the other end of the second feeding pipe (72) is communicated with the lower half part of the piston (20) in the cylinder body (2).

3. A hydromechanical apparatus according to claim 2, wherein: and the first feeding pipe (71) and the second feeding pipe (72) are both provided with feeding control valves (8).

4. A hydromechanical apparatus according to claim 3, wherein: be equipped with detachable sealed lid (30) on oil tank (3), still be equipped with on oil tank (3) wall and keep warm cotton (31), still be equipped with sealing strip (32) that are the annular shape on oil tank (3), and sealing strip (32) cover is established at sealed lid (30) and oil tank (3) contact department.