阅读说明：本技术 一种驱动桥冷却回油过滤装置 (Transaxle cooling return oil filter equipment ) 是由 毕胜 杨雪松 吴猛 刘敏 杨书强 于 2020-06-04 设计创作，主要内容包括：本发明公开了一种驱动桥冷却回油过滤装置,包括液压油箱的箱体,及与箱体连通的、用于导油的回油管,所述箱体内置有滤芯,所述箱体内壁固定连接有垫板,所述滤芯固定连接在垫板上,所述回油管的出油口与滤芯的内腔相连通。该装置中的新结构滤芯是双层结构,内、外滤芯层之间形成的环形流道,不仅增加过滤面积提高过滤效率,而且环形流道在配合低温加热时,有效减小了油液聚集,形成了较小的回油背压,此外,所述滤芯内置于液压油箱箱体内部,省去了传统制动回油带壳体的过滤器,并减少了渗漏点。(The invention discloses a cooling return oil filtering device for a drive axle, which comprises a box body of a hydraulic oil tank and a return oil pipe communicated with the box body and used for guiding oil, wherein a filter element is arranged in the box body, the inner wall of the box body is fixedly connected with a base plate, the filter element is fixedly connected to the base plate, and an oil outlet of the return oil pipe is communicated with an inner cavity of the filter element. The new construction filter core among the device is bilayer structure, and the annular flow way that forms between inside and outside filter core layer not only increases filter area and improves filtration efficiency, and annular flow way has effectively reduced the fluid gathering moreover when cooperation low temperature heating, has formed less oil return backpressure, in addition, inside the hydraulic tank box was placed in to the filter core in, saved the filter of traditional braking time oil belt casing to the leak source has been reduced.)

1. The utility model provides a transaxle cooling oil return filter equipment, includes hydraulic tank's box (1), reaches and is used for leading oily back oil pipe (14) with box (1) intercommunication, its characterized in that, box (1) embeds there is filter core (3), box (1) inner wall fixedly connected with backing plate (2), filter core (3) fixed connection is on backing plate (2), the oil-out that returns oil pipe (14) is linked together with the inner chamber of filter core (3).

2. The drive axle cooling return oil filtering device according to claim 1, wherein an opening (10) is formed in the top of the box body (1), the opening (10) is located right above the filter element (3), and a movable cover plate (6) is installed at the opening (10).

3. The drive axle cooling return oil filtering device according to claim 1 or 2, characterized in that a heat collecting plate (4) is welded on the box body (1), and a heater (5) is arranged on the inner wall of the heat collecting plate (4); the heater (5) is arranged on the periphery of the filter element (3).

4. The drive axle cooling return oil filtering device according to claim 1, wherein the backing plate (2) and the filter element (3) are clamped by a groove which is formed in the backing plate (2) and has the same shape as the cross section of the bottom surface of the filter element (3).

5. Drive axle cooling return oil filter device according to claim 2, characterized in that said removable cover (6) comprises a cover base (61), a flip cover (62), a hinge (63); the cover plate base (61) is fixedly arranged on the box body (1) positioned on the periphery of the opening (10), and the hinge (63) is formed by rotationally connecting a movable hinge (631) and a fixed hinge (632); the fixed hinge (632) is fixedly arranged on the side wall of the cover plate base (61), and the movable hinge (631) is fixedly arranged on the turnover cover plate (62).

6. A drive axle cooling return oil filter device according to claim 5, characterized in that the cover plate base (61) is provided with a sealing gasket (7), and the outer end surface of the turnover cover plate (62) is fixed with a cover plate handle (9).

7. The drive axle cooling oil return filtering device according to claim 5, characterized in that a buckle (8) is fixedly connected to the box body (1), and the buckle (8) is in matched clamping connection with an external buckle on the turnover cover plate (62).

8. The drive axle cooling oil return filtering device according to claim 1, characterized in that a through oil return base (11) is installed on the side wall of the box body (1), and an oil outlet of the oil return pipe (14) is fixedly connected with the oil return base (11) through a direct joint (13); and a sensor (12) is arranged in the oil return base (11).

9. A drive axle cooled return oil filter device according to claim 3, characterised in that the heater (5) is a half-wrapped profiled electric heater; the heater (5) is fixedly connected to the inner wall of the box body (1).

10. The drive axle cooling return oil filtering device according to claim 2, wherein the aperture of the opening (10) is larger than the outer diameter of the filter element (3), the filter element (3) comprises an outer filter element layer (31), an inner filter element layer (32), an upper rubber ring (34) and a bottom rubber ring (33), two ends of the outer filter element layer (31) and the inner filter element layer (32) are respectively clamped in the upper rubber ring (34) and the bottom rubber ring (33), and an annular flow passage is formed between the outer filter element layer (31) and the inner filter element layer (32); an oil inlet (35) communicated with the oil return pipe (14) is formed in the outer filter element layer (31), and an oil return opening communicated with the box body (1) is formed in the bottom rubber ring (33).

Technical Field

The invention relates to the technical field of replacement of a drive axle filtering inner core, in particular to a drive axle cooling return oil filtering device.

Background

The existing heavy port carrying equipment, such as a heavy forklift, a container empty container stacking machine and a container front crane braking system, adopts a wet braking system, brakes on two sides of a drive axle need to dissipate heat in real time, a cooling system needs to be independently arranged in a hydraulic system to ensure the real-time working temperature of the drive axle, and abrasive particles generated by a brake spacer and a friction plate need to be intercepted in time, otherwise, a large amount of abrasive particles enter a hydraulic oil tank, and the reliability of the system is seriously influenced, so a braking oil return filter needs to be arranged on an oil return path, but the existing oil return filter assembly is arranged in a vehicle body, so that the inspection and the replacement are inconvenient, and oil return leakage points are easy to increase; in addition, when the return oil filter is blocked, the bypass is opened, and the filter element cannot be replaced in time, so that the risk that abrasive particles enter a hydraulic oil tank to pollute a system is greatly increased; moreover, when the whole car of low temperature starts for the first time in winter, the inside residual hydraulic oil of oil return filter is more viscous, easily adheres to on the filter core surface, has increased its initial start backpressure, if the backpressure is greater than 1Bar for a long time, seriously influences both sides stopper mirror surface oil blanket life-span.

Disclosure of Invention

The invention aims to provide a drive axle cooling return oil filtering device to solve the problems in the background technology. So as to achieve the aims of facilitating the replacement of the filter element, saving the traditional filter with a shell for braking oil return and reducing leakage points.

In order to achieve the purpose, the invention provides the following technical scheme:

the utility model provides a transaxle cooling oil return filter equipment, includes hydraulic tank's box, reaches the oil pipe that returns that communicates with the box, is used for leading oil, the box is built-in to have the filter core, box inner wall fixedly connected with backing plate, filter core fixed connection is on the backing plate, the oil-out that returns the oil pipe is linked together with the inner chamber of filter core.

As a further scheme of the invention: the top of box has seted up the opening, the opening is located the filter core directly over, removable cover is installed to the opening part.

As a further scheme of the invention: the box body is welded with a heat-collecting plate, and a heater is arranged on the inner wall of the heat-collecting plate; the heater is arranged on the periphery of the filter element.

As a further scheme of the invention: the base plate and the filter element are clamped through a groove which is formed in the base plate and has the same shape with the cross section of the bottom surface of the filter element.

As a further scheme of the invention: the movable cover plate comprises a cover plate base, a turnover cover plate and a hinge; the cover plate base is fixedly arranged on the box body positioned on the periphery of the opening, and the hinge is formed by rotationally connecting a movable hinge and a fixed hinge; the fixed hinge is fixedly arranged on the side wall of the cover plate base, and the movable hinge is fixedly arranged on the turnover cover plate.

As a further scheme of the invention: the cover plate base is provided with a sealing gasket, and the outer end face of the turnover cover plate is fixedly provided with a cover plate handle.

As a further scheme of the invention: the box body is fixedly connected with a buckle, and the buckle is clamped with an outer buckle on the turnover cover plate in a matching manner.

As a further scheme of the invention: a through oil return base is mounted on the side wall of the box body, and an oil outlet of the oil return pipe is fixedly connected with the oil return base through a direct joint; and a sensor is arranged in the oil return base.

As a further scheme of the invention: the heater is a half-wrapped special-shaped electric heater; the heater is fixedly connected to the inner wall of the box body.

As a further scheme of the invention: the caliber of the opening is larger than the outer diameter of the filter element, the filter element comprises an outer filter element layer, an inner filter element layer, an upper rubber ring and a bottom rubber ring, two ends of the outer filter element layer and the inner filter element layer are respectively clamped in the upper rubber ring and the bottom rubber ring, and an annular flow channel is formed between the outer filter element layer and the inner filter element layer; an oil inlet communicated with the oil return pipe is formed in the outer filter core layer, and an oil return opening communicated with the box body is formed in the bottom rubber ring. And similarly, an oil passing port communicated with the oil return port is also formed in the base plate, so that the filter oil entering the middle cavity in the inner filter element layer enters the hydraulic oil tank from the oil return port on the bottom rubber ring and the oil passing port on the base plate.

Compared with the prior art, the invention has the beneficial effects that: the new structure filter element in the device is arranged in the hydraulic oil tank body, so that the traditional filter with a shell body returned by braking is omitted, and leakage points are reduced. In addition, an oil inlet is arranged on the outer filter element layer of the filter element, cooling return oil firstly enters an annular flow passage formed by the inner filter element layer and the outer filter element layer in the filter element for filtering after passing through an oil return pipe, wherein one part of hydraulic oil enters the hydraulic oil tank through the outer filter element layer, the other part of hydraulic oil enters the middle cavity through the inner filter element layer, then enters the hydraulic oil tank through an oil return port arranged on the bottom rubber ring and an oil passing port on the backing plate, thereby realizing bidirectional filtration, and the annular flow passage formed between the inner filter element layer and the outer filter element layer not only increases the filtration area but also improves the filtration efficiency, the annular flow passage greatly reduces the oil return back pressure, effectively reduces the oil liquid aggregation when being matched with low-temperature heating, forms smaller oil return back pressure, the turnover cover plate can be quickly opened and closed, so that the efficiency of filter element replacement and inspection is effectively improved, and the turnover cover plate is particularly suitable for operating occasions with severe working conditions and frequent maintenance of the filter elements; the use of the sensor enables the filtering device to be simpler, a one-way valve of bypass backpressure is omitted, a driver can be informed of replacing or cleaning the filter element in time in the first time, and the driver can operate the whole state after neutral gear for the first time after automatic control alarm; the preheating function that the heater has can solve the problem that low temperature operating mode starts oil return filter core department backpressure for the first time on high side, and in addition, the annular runner that forms between inside and outside filter core layer has effectively reduced the fluid gathering when the cooperation low temperature heating, has formed less oil return backpressure.

Drawings

FIG. 1 is an exploded view of the installation of the present invention;

FIG. 2 is a front view of the present invention;

FIG. 3 is a top view of the present invention;

FIG. 4 is a left side view of the present invention;

FIG. 5 is an isometric view A of the present invention;

FIG. 6 is an isometric view B of the present invention;

FIG. 7 is a schematic view illustrating an opened state of the flip cover according to the present invention;

FIG. 8 is a front view of a filter cartridge according to the present invention;

FIG. 9 is a schematic view of the construction of the backing plate of the present invention;

in the figure: 1-box body, 2-backing plate, 21-oil passing port, 3-filter element, 31-outer filter element layer, 32-inner filter element layer, 33-bottom rubber ring, 34-upper rubber ring, 35-oil inlet, 4-heat collecting plate, 5-heater, 6-movable cover plate, 61-cover plate base, 62-turnover cover plate, 63-hinge, 631-movable hinge, 632-fixed hinge, 7-sealing pad, 8-buckle, 9-cover plate handle, 10-opening, 11-oil return base, 12-sensor, 13-direct joint and 14-oil return pipe.

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.

The invention will now be further illustrated by way of example with reference to the accompanying figures 1 to 9. In the embodiment of the invention, the drive axle cooling return oil filtering device comprises a box body 1 of a hydraulic oil tank and a return oil pipe 14 which is communicated with the box body 1 and used for guiding oil, wherein a filter element 3 is arranged in the box body 1, and the filter element 3 with a new structure is arranged in the box body 1 of the hydraulic oil tank, so that a traditional filter with a shell for braking return oil is omitted, and leakage points are reduced; the inner wall of the box body 1 is fixedly connected with a backing plate 2, the filter element 3 is fixedly connected to the backing plate 2, and an oil outlet of the oil return pipe 14 is communicated with an inner cavity of the filter element 3.

Specifically, the top of the box body 1 is provided with an opening 10, the opening 10 is positioned right above the filter element 3, and the opening 10 is provided with a movable cover plate 6.

Specifically, a heat-collecting plate 4 is welded on the box body 1, and a heater 5 is arranged on the inner wall of the heat-collecting plate 4; the heater 5 is arranged on the periphery of the filter element 3, the heater 5 surrounds the periphery of the filter element 3 to ensure that the filter element 3 is uniformly heated, and meanwhile, the heat-collecting plate 4 is used for avoiding the heat of the heater 5 from being dissipated outwards and improving the heat utilization of the filter element 3. Because the heater 5 has the preheating function, the problem that the back pressure at the position of the oil return filter element 3 is started for the first time under the low-temperature working condition is higher can be solved.

Specifically, backing plate 2 and filter core 3 carry out the joint through the recess that sets up on backing plate 2 and 3 bottom surface cross sectional shape unanimity of filter core, backing plate 2 on set up the recess for the convenience of filter core 3's change.

Specifically, the movable cover plate 6 comprises a cover plate base 61, a turnover cover plate 62 and a hinge 63; the cover plate base 61 is fixedly arranged on the box body 1 positioned at the periphery of the opening, and the hinge 63 is formed by rotationally connecting a movable hinge 631 and a fixed hinge 632; fixed hinge 632 fixed mounting is at the lateral wall of apron base 61, activity hinge 631 fixed mounting is on upset apron 62, upset apron 62 pass through hinge 63 and be connected with apron base 61, the quick opening and the closure of the apron 62 of being convenient for overturn has effectively improved the change and the inspection efficiency of filter core 3, is particularly useful for the operation occasion that the bad needs of operating mode often maintain maintenance filter core 3.

Specifically, install sealed 7 on the apron base 61, upset apron 62 covers opening 10 through sealed 7 tightly, can improve the holistic sealing performance of device, the outer terminal surface of upset apron 62 is fixed with apron handle 9, and apron handle 9 makes things convenient for the opening or closing of upset apron 62.

Specifically, fixedly connected with buckle 8 on the box 1, buckle 8 and the outer buckle phase-match joint (being similar to the joint between the upper cover of electric rice cooker and the staving) on the flip cover board 9 realize opening or closing of flip cover board 9 through pressing down buckle 8.

Specifically, a through oil return base 11 is installed on the side wall of the box body 1, and an oil outlet of the oil return pipe 14 is fixedly connected with the oil return base 11 through a direct joint 13; and a sensor 12 is arranged inside the oil return base 11. The sensor 12 is a pressure sensor, the use of the pressure sensor makes the filtering device simpler, a one-way valve of bypass backpressure is omitted, an alarm signal can be sent out at the first time, and a driver can be informed to replace or clean the filter element 3 in time.

Specifically, the heater 5 is a half-wrapped special-shaped electric heater, and is controlled to be turned on and off by an external power supply; the heater 5 is fixedly connected to the inner wall of the box body.

Specifically, the aperture of the opening 10 is larger than the outer diameter of the filter element 3, so that the filter element 3 can conveniently enter and exit; the filter element 3 comprises an outer filter element layer 31, an inner filter element layer 32, an upper rubber ring 34 and a bottom rubber ring 33, two ends of the outer filter element layer 31 and two ends of the inner filter element layer 32 are respectively clamped in the upper rubber ring 34 and the bottom rubber ring 33, and an annular flow channel is formed between the outer filter element layer 31 and the inner filter element layer 32; an oil inlet 35 communicated with the oil return pipe 14 is formed in the outer filter element layer 31, and an oil return opening is formed in the bottom rubber ring 33. The annular flow channel formed between the outer filter element layer 31 and the inner filter element layer 32 not only increases the filtering area and improves the filtering efficiency, but also effectively reduces oil liquid aggregation when the annular flow channel is matched with low-temperature heating, and forms smaller oil return back pressure. Similarly, the backing plate 2 is also provided with an oil passing port 21 communicated with the oil return port, so that the filtered oil in the middle cavity inside the inner filter element layer 32 enters the hydraulic oil tank from the oil return port on the bottom rubber ring 33 and the oil passing port 21 on the backing plate 2.

The working process is as follows: 1. in the filtering process, when the whole machine works, hydraulic oil of a hydraulic system for a left wet brake and a right wet brake of a drive axle is circulated, then the hydraulic oil carries heat generated by braking, a spacer and particles generated by a friction plate to flow back to the drive axle together, firstly, the hydraulic oil passes through an oil return pipe 14 with a large diameter, then passes through a straight-through joint 13 communicated with the oil return pipe 14 and an oil return support 11, then enters an annular flow passage formed between an outer filter core layer 31 and an inner filter core layer 32 through an oil inlet 35 formed in the outer filter core layer 31 of a filter element 3 and communicated with an oil return base 11, wherein one part of the hydraulic oil enters a hydraulic oil tank after being filtered by the outer filter core layer 31, and the other part of the hydraulic oil enters a central cavity after being filtered by the inner filter core layer 32, and then flows back to the hydraulic oil tank from an oil return port formed in a rubber ring 33 at the bottom and, the inner filter element layer and the outer filter element layer can be used for filtering, so that the returned oil can be timely and quickly filtered and then returns to the hydraulic oil tank, and the clamping parts of the inner filter element layer and the outer filter element layer, the bottom rubber ring 33 and the upper rubber ring 34 are respectively provided with a corresponding sealing gasket so as to ensure the sealing property of the annular flow channel, so that the hydraulic oil entering the annular flow channel can enter the hydraulic oil tank only after being filtered by the inner filter element layer and the outer filter element layer; meanwhile, the inner and outer filter element layers can be conveniently disassembled for cleaning.

2. Filter core replacement process, upset apron 62 is at sealed pad 7, buckle 8, activity hinge 631, fixed hinge 632 compresses tightly filter core 3 down in the effect, form certain oily storage filter space of receiving, when needs overhaul or renew cartridge 3, directly mention apron handle 9 and can open upset apron 62, filter core 3 can be drawn out fast this moment and accomplish the change, change simultaneously and accomplish the back, checkpost and buckle 8 reliable connection on the upset apron 62, upset apron 62 can be closed at any time, the quick replacement of filter core 3 can be realized to the above process.

3. During the working process of the sensor, when the whole machine works, hydraulic oil of a hydraulic system for a left wet brake and a right wet brake of a drive axle is circulated, heat generated by braking, a spacer and particulate matters generated by a friction plate are driven to flow back to the drive axle together, the heat and the spacer firstly pass through an oil return pipe 14 with a large drift diameter, then pass through a straight-through joint 13 communicated with an oil outlet of the oil return pipe 14, and then pass through an oil return support 11 connected with the straight-through joint 13, the pressure at the position is detected by the sensor fixed in the oil return support 11 in real time, if the pressure exceeds 1Bar, the sensor can display a feedback signal on an instrument panel or give an alarm, and meanwhile, the whole machine gearbox cannot be engaged again after being disengaged by signal control of the sensor, so that a.

4. The preheating process, when the complete machine is in winter, the hydraulic oil of adhesion on the filter core 3 is thick, can increase the viscous resistance on filter core 3 surface, has increased oil return backpressure, and heater 5 opens certain time after starting under the complete machine ambient temperature program setting condition this moment, and heater 5 opening time and heating time are rationally matched according to rated power and temperature rise, and heat collecting plate 4 has guaranteed simultaneously that the heat does not dispel outward and all can be utilized by filter core 3, and heating temperature generally controls at about 60 degrees. The preheating process raises the temperature of the hydraulic oil adhered to the filter element 3 and reduces the viscosity of the hydraulic oil, so that the filtering resistance of the inner filter element and the outer filter element is improved, and the oil return resistance is reduced. In addition, the annular flow channel formed between the inner filter element layer 32 and the outer filter element layer 31 effectively reduces oil liquid aggregation when being matched with low-temperature heating, and forms smaller oil return back pressure.

Although the present description is described in terms of embodiments, not every embodiment includes only a single embodiment, and such description is for clarity only, and those skilled in the art should be able to integrate the description as a whole, and the embodiments can be appropriately combined to form other embodiments as will be understood by those skilled in the art.

Therefore, the above description is only a preferred embodiment of the present application, and is not intended to limit the scope of the present application; all changes which come within the meaning and range of equivalency of the claims are to be embraced within their scope.