A servo angle steel corner cutting hydraulic station

Abstract

The application discloses a kind of servo angle steel cutting angle hydraulic stations, it is related to hydraulic technology field, including base, hydraulic system and heat dissipation system, the hydraulic system is used to supply and back to servo angle steel cutting angle hydraulic rod with hydraulic oil, the heat dissipation system is used to carry out cooling to back to hydraulic oil, further include filter system, wherein, the filter system includes: shell group, the inside of shell group is provided with a filter unit and second filter unit, the structure of the filter unit and second filter unit is identical, but the overall size of second filter unit is less than filter unit. By setting filter hole aperture gradually decreasing filter unit and second filter unit and can expand and add multiple levels of same structure filter unit, it solves the technical defects that traditional hydraulic oil single layer removes impurity incompletely, and large particle impurities are easily wrapped with small impurities residue, greatly purifies backflow hydraulic oil quality, effectively delays the deterioration aging speed of hydraulic oil.

Description

Technical Field

[0001] This invention belongs to the field of hydraulic technology, specifically a servo angle steel cutting hydraulic station. Background Technology

[0002] Angle steel, as a core profile in steel structure buildings, support components, and mechanical frame processing, is mostly an L-shaped cross-section structure. In actual assembly, welding, and splicing operations, problems such as assembly interference, welding deformation, and excessive gaps at the right-angle ends of angle steel are prone to occur. Therefore, it is necessary to cut the angle steel ends. The hydraulic station is the core power supply device of the angle steel cutting equipment. It mainly realizes the pressurization, transportation, pressure regulation, and return circulation of hydraulic oil through the oil pump, valve group, and oil circuit structure of the hydraulic system, providing stable extension and retraction power for the angle steel cutting hydraulic rod, thereby driving the cutting tool to complete the continuous action of rapid feed cutting and reset return.

[0003] Existing servo angle steel cutting hydraulic stations mostly adopt a single-layer single-precision filtration mode for hydraulic filtration structure. However, during the angle steel cutting operation, the reciprocating extension and retraction of the hydraulic rod will generate contaminants of different particle sizes, such as wear particles and colloidal impurities. The single-layer filtration structure cannot achieve graded interception, resulting in incomplete filtration. Furthermore, it is very easy for the hydraulic oil to be unable to flow back in time due to the instantaneous accumulation of impurities covering and blocking the filter screen surface. Summary of the Invention

[0004] To address the problems mentioned in the background art, the present invention proposes a servo angle steel cutting hydraulic station.

[0005] The objective of this invention can be achieved through the following technical solutions:

[0006] A servo angle steel cutting hydraulic station includes a base, a hydraulic system, and a cooling system. The hydraulic system supplies and recycles hydraulic oil to and from the servo angle steel cutting hydraulic rod. The cooling system cools the recycled hydraulic oil. The station also includes a filtration system, wherein the filtration system comprises:

[0007] The housing assembly contains a first filter unit and a second filter unit. The first filter unit and the second filter unit have the same structure, but the overall size of the second filter unit is smaller than that of the first filter unit. The first filter unit is used to perform primary filtration on the pumped-back hydraulic oil, and the second filter unit is used to perform secondary filtration on the hydraulic oil after primary filtration.

[0008] The cleaning unit is located inside the housing assembly and extends from the first filter unit to the second filter unit;

[0009] The impurity chamber is detachably mounted on the outside of the housing assembly and can collect impurities filtered out by the first and second filter units.

[0010] As a further preferred embodiment of this technical solution: the outer shell assembly includes a top shell, a second-layer top shell is connected to the bottom of the top shell via a connecting rod, a second-layer bottom shell and a bottom shell are sequentially fixedly connected to the bottom of the second-layer top shell, and the top shell, second-layer top shell, second-layer bottom shell and bottom shell are arranged concentrically, the second-layer top shell and the second-layer bottom shell are both provided with a circular array of reflux holes, and the diameter of the reflux holes on the second-layer bottom shell is smaller than the diameter of the reflux holes on the second-layer top shell, the bottom of the second-layer bottom shell is connected to the bottom shell;

[0011] The first filter unit is located inside the top shell, and the second filter unit is arranged inside the second-layer top shell.

[0012] As a further preferred embodiment of this technical solution: the first filtering unit includes:

[0013] The fixing ring is connected to the inner wall of the top shell through the first bracket, with a gap. The inside of the fixing ring is connected to the connecting ring through the second bracket, with a gap also left.

[0014] A sleeve column is fixedly connected to the inner side of the connecting ring. Multiple liquid inlet grooves are arrayed on the side wall of the sleeve column, and a frustum-shaped filter screen is connected through the bottom of the sleeve column.

[0015] A frustum-shaped sealing plate is disposed at the bottom of the frustum-shaped filter screen, and the frustum-shaped sealing plate is sealed and fitted to the inner wall of the secondary top shell;

[0016] A guide assembly, positioned above the retaining ring, is used to guide hydraulic oil to the gap between the top shell and the rotating ring;

[0017] A floating component is disposed on a connecting ring and located above a frustum-shaped filter screen. An annular filter screen is installed on the floating component, and the annular filter screen is slidably sleeved on the outside of the sleeve column.

[0018] The second filter unit is installed on the inside of the secondary top shell in the same manner.

[0019] As a further preferred embodiment of this technical solution: the guiding component includes:

[0020] A rotating ring is rotatably mounted on top of a fixed ring, and a conical guide plate is provided on the top of the rotating ring.

[0021] As a further preferred embodiment of this technical solution: the floating component includes:

[0022] The sleeve rods are arranged in a ring array on the bottom surface of the connecting ring, and each sleeve rod has a spring inside;

[0023] Several sliding shafts are provided, which are correspondingly slidably disposed inside each of the sleeve rods, and one end of the spring is connected to the sliding shaft, while the other end of the spring is fixedly connected to the inner wall of the sleeve rod.

[0024] As a further preferred embodiment of this technical solution: the cleaning unit includes:

[0025] The rotating shaft is connected to the guide components in the first and second filter units respectively, and a servo motor is provided at the bottom to drive the rotating shaft to rotate.

[0026] The scraping mechanism is provided in two sets, which are identical in structure but different in size, and are adapted to be installed in the No. 1 filter unit and the No. 2 filter unit area. Taking the scraping mechanism installed inside the No. 1 filter unit as an example, the scraping mechanism includes a cleaning plate. The cleaning plate is connected to the outer wall of the rotating ring through a connecting frame, and is used to scrape the impurities on the frustum-shaped filter screen and the frustum-shaped sealing plate into the impurity chamber.

[0027] As a further preferred embodiment of this technical solution: the bottom surface of the annular filter screen is provided with a plurality of oblique protrusions arranged in an annular array, and the second filter unit is provided with oblique protrusions of the same structure.

[0028] An extension rod is provided at the top of the cleaning plate, and a ball seat is provided above the extension rod. A ball is rolled inside the ball seat to cooperate with the inclined surface of the inclined protrusion.

[0029] As a further preferred embodiment of this technical solution: the impurity chamber includes a detachable first chamber and a second chamber, each divided into two semicircles, and positioning rings are provided on the outer walls of the secondary top shell and the secondary bottom shell, by positioning and fixing the first chamber and the second chamber on the outside of the positioning rings.

[0030] As a further preferred embodiment of this technical solution: the filtration system further includes a liquid inlet disposed on the top shell and a liquid return pipe disposed on the bottom shell, the liquid inlet being connected to the heat dissipation system via a pipe.

[0031] As a further preferred embodiment of this technical solution: the hydraulic system includes:

[0032] The housing is fixedly mounted on the base, and the housing is divided into an oil tank and an outer chamber. The oil tank is used to store hydraulic oil, the filtration system is installed inside the outer chamber, and the bottom shell is connected to the oil tank through a return pipe.

[0033] An oil pump, installed on top of the housing, is used to draw and return hydraulic oil. The housing is also equipped with an electric motor for driving the oil pump, and the oil inlet of the oil pump is connected to the oil tank through an oil pipe.

[0034] The valve assembly is installed on the top of the housing and connected to the oil pump outlet via pipelines. The valve assembly includes a directional valve, a pressure valve, and a flow valve. The valve assembly is also connected to the servo angle steel cutting hydraulic rod and the heat dissipation system via pipelines.

[0035] Compared with the prior art, the beneficial effects of the present invention are:

[0036] 1. In this invention, by setting up a first and second filter unit with progressively decreasing filter hole diameters and by expanding to add multiple filter units of the same structure, the technical defects of traditional hydraulic oil single-layer filtration, such as incomplete removal of impurities and easy entrainment of fine impurities by large particles, are solved. This significantly purifies the quality of the returned hydraulic oil and effectively slows down the rate of hydraulic oil deterioration and aging.

[0037] 2. In this invention, a floating component is set up in conjunction with a cleaning unit. The spring force drives the sliding shaft to continuously shake the annular filter screen up and down. At the same time, the rotation of the cleaning plate drives the ball to cooperate with the inclined surface of the inclined protrusion, so as to realize the periodic lifting and shaking of the filter screen. When the instantaneous impurity load is large and the processing capacity of the frustum-shaped filter screen is insufficient, the filter screen can be filtered by the annular filter screen. The floating component reduces the adsorption of impurities and continuously ensures the smooth return of hydraulic oil. This avoids the jamming of angle steel cutting operations and equipment downtime caused by filter screen blockage, and greatly improves the continuous operation efficiency of the equipment.

[0038] 3. In this invention, by setting a return hole and a detachable impurity chamber, the centralized collection of impurities and the return and recycling of hydraulic oil are realized. The impurities filtered and intercepted can be uniformly collected in the impurity chamber. At the same time, the residual hydraulic oil mixed in the impurities can seep back into the bottom shell through the return hole and flow back to the oil tank, effectively intercepting solid impurities while minimizing hydraulic oil loss. Attached Figure Description

[0039] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0040] Figure 2 This is a partial cross-sectional view of the present invention;

[0041] Figure 3 This is a schematic diagram of the filtration system of the present invention;

[0042] Figure 4 This is a partial exploded view of the filtration system of the present invention;

[0043] Figure 5 This is a partial cross-sectional view of the filtration system of the present invention;

[0044] Figure 6 This is a partial exploded view of the first filter unit and the oblique protrusion of the present invention;

[0045] Figure 7This is a schematic diagram of the cleaning unit of the present invention;

[0046] Figure 8 for Figure 7 Enlarged schematic diagram of the structure at point A in the middle.

[0047] Legend: 1. Base; 2. Hydraulic system; 21. Electric motor; 22. Oil pump; 23. Oil pipe; 24. Oil tank; 25. Outer chamber; 26. Valve assembly; 3. Filtration system; 31. Top shell; 311. Liquid inlet; 312. Liquid return pipe; 313. Positioning ring; 314. Connecting rod; 315. Secondary top shell; 316. Secondary bottom shell; 317. Bottom shell; 318. Return hole; 32. Impurity chamber; 321. Chamber 1; 322. Chamber 2; 331. Conical guide plate; 332. Rotating ring; 333. Fixed ring; 334. Sleeve column; 3341. Liquid inlet tank; 335. Connecting ring; 336. Circular annular filter screen; 337. Sleeve rod; 338. Sliding shaft; 339. Spring; 3310. Frustum-shaped filter screen; 3311. Frustum-shaped sealing plate; 34. Slanted protrusion; 35. Cleaning unit; 351. Rotating shaft; 352. Connecting frame; 353. Cleaning plate; 36. Second filter unit; 37. Extension rod; 371. Ball seat; 372. Ball; 4. Heat dissipation system. Detailed Implementation

[0048] The technical solution of the present invention will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0049] Please see Figures 1-8 This application provides a servo angle steel cutting hydraulic station, including a base 1, a hydraulic system 2, and a cooling system 4. The hydraulic system 2 is used to supply and withdraw hydraulic oil to the servo angle steel cutting hydraulic rod. The cooling system 4 is used to cool the withdrawn hydraulic oil, preferably an air-cooled radiator. It also includes a filtration system 3, wherein the filtration system 3 includes:

[0050] The housing assembly contains a first filter unit and a second filter unit 36. The first filter unit and the second filter unit 36 ​​have the same structure, but the overall size of the second filter unit 36 ​​is smaller than that of the first filter unit (including the aperture of the filter holes). The first filter unit is used to perform primary filtration on the returned hydraulic oil, and the second filter unit 36 ​​is used to further perform secondary filtration on the hydraulic oil after primary filtration. It should be noted that this solution has been verified to be sufficient to remove impurities carried by the hydraulic oil returning from the servo angle steel cutting hydraulic rod through secondary filtration. However, it is not limited to secondary filtration. In the same manner, a filter structure with the same structure as the first filter unit and the second filter unit 36 ​​can be arranged below the second filter unit 36 ​​to perform multiple filtrations.

[0051] The cleaning unit 35 is located inside the housing assembly and extends from the first filter unit to the second filter unit 36, and is attached to the outside of the first filter unit and the second filter unit 36.

[0052] The impurity chamber 32 is detachably mounted on the outside of the housing assembly and can collect impurities filtered out by the first filter unit and the second filter unit 36.

[0053] Specifically, by connecting the filtration system 3 to the hydraulic system 2, the filtration system 3 can filter the hydraulic oil returning from the servo angle steel cutting hydraulic rod. That is, the returning hydraulic oil enters the housing assembly from the top and passes through the first filter unit and the second filter unit 36 ​​respectively, realizing multi-stage filtration of the hydraulic oil, ensuring the quality of the hydraulic oil after return and extending the service life of the hydraulic oil. In addition, the impurity cleaning unit 35 cleans the impurities blocking the surface of the first filter unit and the second filter unit 36 ​​to avoid blocking the normal return channel of the hydraulic oil. Afterwards, the impurities are collected in the impurity chamber 32 for collection and are disassembled and cleaned regularly.

[0054] Furthermore, the outer shell assembly includes a top shell 31, and a secondary top shell 315 is connected to the bottom of the top shell 31 via a connecting rod 314. A secondary bottom shell 316 and a lower shell 317 are sequentially fixedly connected to the bottom of the secondary top shell 315. The top shell 31, the secondary top shell 315, the secondary bottom shell 316, and the lower shell 317 are arranged concentrically. The secondary top shell 315 and the secondary bottom shell 316 are both provided with a circular array of return holes 318. The diameter of the return holes 318 on the secondary bottom shell 316 is smaller than that on the secondary top shell 315. The bottom of the secondary bottom shell 316 is connected to the lower shell 317. Impurities accumulated inside the impurity chamber 32 carrying hydraulic oil can seep back to the lower shell 317 through the return holes 318, thereby blocking the impurities and reducing the consumption of hydraulic oil.

[0055] The first filter unit is located inside the top shell 31, and the second filter unit 36 ​​is arranged inside the second top shell 315.

[0056] Furthermore, the first filtering unit includes:

[0057] The fixing ring 333 is connected to the inner wall of the top shell 31 through the first bracket, with a gap. The inside of the fixing ring 333 is connected to the connecting ring 335 through the second bracket, with a gap also left.

[0058] A sleeve 334 is fixedly connected to the inner side of a connecting ring 335. Multiple liquid inlet grooves 3341 are arrayed on the side wall of the sleeve 334. A frustum-shaped filter screen 3310 is connected through the bottom of the sleeve 334.

[0059] A frustum-shaped sealing plate 3311 is disposed at the bottom of the frustum-shaped filter screen 3310, and the frustum-shaped sealing plate 3311 is sealed and fitted to the inner wall of the secondary top shell 315.

[0060] A guide assembly, positioned above the retaining ring 333, is used to guide hydraulic oil to the gap between the top shell 31 and the rotating ring 332;

[0061] A floating assembly is disposed on a connecting ring 335 and located above a frustum-shaped filter screen 3310. An annular filter screen 336 is installed on the floating assembly, and the annular filter screen 336 is slidably sleeved on the outside of a sleeve post 334, and the sleeve post 334 and the annular filter screen 336 are sealed together.

[0062] The second filter unit 36 ​​is installed on the inside of the secondary top shell 315 in the same manner.

[0063] Specifically, the hydraulic oil enters the gap channel between the top shell 31 and the fixing ring 333 through the guide assembly. After touching the bottom, it enters the space formed by the impurity chamber 32, the inlet 311, and the frustum-shaped filter screen 3310. At this time, under the action of the cleaning unit 35, impurities flow along the inclined surface of the frustum-shaped sealing plate 3311 into the impurity chamber 32 for collection. The hydraulic oil enters the inner side of the second filter unit 36 ​​through multiple channels. First, a large amount of hydraulic oil enters and enters the area of ​​the second filter unit 36 ​​through the frustum-shaped filter screen 3310. If there are too many impurities at any moment, causing the frustum-shaped filter screen 3310 to be blocked over a large area, the hydraulic oil will flow upwards. The fluid flows through the annular filter screen 336 and is filtered by the floating component, which constantly moves up and down, making it difficult for impurities to adhere to the annular filter screen 336 below the floating component. Then, it enters the area of ​​the second filter unit 36 ​​through the inlet tank 3341. The second filter unit 36 ​​and the first filter unit also have other impurities entering the impurity chamber 32. After a long period of time, they will seep back into the oil tank 24. In this way, the returned hydraulic oil can be filtered well, and multiple "channels" are formed to allow the hydraulic oil to quickly flow back into the oil tank 24, so as to facilitate the next quick angle steel cutting operation. At the same time, the seepage can reduce the consumption of hydraulic oil.

[0064] Furthermore, the guiding component includes:

[0065] The rotating ring 332 is rotatably mounted on top of the fixed ring 333, and the top of the rotating ring 332 is provided with a conical guide plate 331, which facilitates the hydraulic oil to enter the interior of the top shell 31 and then be guided by the inclined surface of the conical guide plate 331 to diffuse the hydraulic oil to the channel between the top shell 31 and the fixed ring 333.

[0066] Furthermore, the floating component includes:

[0067] Sleeve rods 337 are arranged in a ring array on the bottom surface of the connecting ring 335, and each sleeve rod 337 is provided with a spring 339 inside;

[0068] Several sliding shafts 338 are provided and are correspondingly slidably disposed inside each of the sleeve rods 337. It should be noted that the contact points between the sliding shafts 338 and the sleeve rods 337 are sealed to isolate the springs 339 from the hydraulic oil. One end of the springs 339 is connected to the sliding shafts 338, and the other end of the springs 339 is fixedly connected to the inner wall of the sleeve rods 337.

[0069] Specifically, the sliding shaft 338 moves up and down relative to the sleeve rod 337, and the spring 339 causes it to sway up and down, which in turn causes the annular filter screen 336 to shake up and down, shaking off impurities from the bottom surface of the annular filter screen 336. The same process is repeated in the area of ​​the second filter unit 36, ensuring that even when there are many impurities, the hydraulic oil can flow back smoothly.

[0070] Furthermore, the cleaning unit 35 includes:

[0071] The rotating shaft 351 is connected to the guide components in the first filter unit and the second filter unit 36 ​​respectively, and a servo motor for driving the rotating shaft 351 to rotate is provided on the outer chamber 25.

[0072] Two sets of scraping mechanisms are provided, with identical structures but different sizes, and are adapted to be installed in the No. 1 and No. 2 filter units 36 areas. Taking the scraping mechanism installed inside the No. 1 filter unit as an example, the scraping mechanism includes a cleaning plate 353. The cleaning plate 353 is connected to the outer wall of the rotating ring 332 through the connecting frame 352, and the cleaning plate 353 is arranged in close contact with the outer side of the frustum-shaped filter screen 3310 and the frustum-shaped sealing plate 3311, respectively, and is used to scrape the impurities on the frustum-shaped filter screen 3310 and the frustum-shaped sealing plate 3311 into the impurity bin 32.

[0073] Specifically, by driving the secondary top shell 315 to rotate, the rotating ring 332 and the conical guide plate 331 are driven to rotate, which in turn drives the scraping mechanism to rotate. The impurities on the frustum-shaped filter screen 3310 and the frustum-shaped sealing plate 3311 are scraped into the impurity chamber 32. The scraping mechanism in the second filter unit 36 ​​works on the same principle and achieves the same effect.

[0074] Furthermore, the bottom surface of the annular filter screen 336 is provided with a plurality of oblique protrusions 34 arranged in an annular array, and the second filter unit 36 ​​is provided with oblique protrusions 34 of the same structure.

[0075] An extension rod 37 is provided on the top of the cleaning plate 353, and a ball seat 371 is provided above the extension rod 37. A ball 372 is rolled inside the ball seat 371 to cooperate with the inclined surface of the inclined protrusion 34.

[0076] Specifically, when the cleaning plate 353 rotates, it can drive the extension rod 37 to rotate. The extension rod 37 drives the ball seat 371 and the ball 372 at the top to rotate. The ball 372 will continuously contact the inclined surfaces of each inclined protrusion 34 and continuously lift the annular filter screen 336. With the cooperation of the floating component, the annular filter screen 336 will shake up and down. The same structure in the second filter unit 36 ​​will shake up and down in the same way.

[0077] Furthermore, the impurity chamber 32 includes a detachable first chamber 321 and a second chamber 322, each divided into two semicircles. The outer walls of the secondary top shell 315 and the secondary bottom shell 316 are each provided with a positioning ring 313. The first chamber 321 and the second chamber 322 are positioned and fixed on the outside of the positioning ring 313 for collecting impurities and for periodic disassembly and cleaning.

[0078] Furthermore, the filtration system 3 also includes an inlet 311 on the top shell 31 and a return pipe 312 on the bottom shell 317. The inlet 311 is connected to the heat dissipation system 4 through a pipe. The hydraulic oil is cooled down inside the heat dissipation system 4 before entering the filtration system 3 for filtration. Cooling can solidify impurities, making filtration easier, and also cools down the hydraulic oil.

[0079] Furthermore, the hydraulic system 2 includes:

[0080] The housing is fixedly mounted on the base 1, and the housing is divided into an oil tank 24 and an outer chamber 25. The oil tank 24 is used to store hydraulic oil. The filtration system 3 is installed inside the outer chamber 25, and the bottom shell 317 is connected to the oil tank 24 through the return pipe 312 to realize the return of the filtered hydraulic oil to the oil tank 24.

[0081] The oil pump 22 is installed on the top of the housing to realize the suction and return of hydraulic oil. The housing is also equipped with an electric motor 21 for driving the oil pump 22. The oil inlet of the oil pump 22 is connected to the oil tank 24 through the oil pipe 23.

[0082] Valve assembly 26 is installed on the top of the housing and connected to the oil outlet of oil pump 22 via pipeline. Valve assembly 26 includes a directional valve, a pressure valve, and a flow valve, which are used to control the direction, pressure, and flow rate of hydraulic oil, respectively. Valve assembly 26 is also connected to the servo angle steel cutting hydraulic rod and the heat dissipation system 4 via pipeline. The heat dissipation system 4 is also connected to the filter system 3 via pipeline.

[0083] Specifically, firstly, hydraulic oil is drawn from the oil tank 24 by the electric motor 21 and the oil pump 22, and then transported through the oil pipe 23 and other pipelines to the servo angle steel cutting hydraulic rod via the valve group 26 to achieve the extension action, that is, to cut the angle steel. After that, the hydraulic oil is driven to be drawn back. At this time, it no longer follows the original path, but first passes through the heat dissipation system 4 to cool down, then passes through the filtration system 3 to filter and flows back into the oil tank 24.

[0084] The above embodiments are only used to illustrate the technical methods of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical methods of the present invention without departing from the spirit and scope of the technical methods of the present invention.

Claims

1. A servo angle steel cutting hydraulic station, comprising a base (1), a hydraulic system (2), and a heat dissipation system (4), wherein the hydraulic system (2) is used to supply and retract hydraulic oil to the servo angle steel cutting hydraulic rod, and the heat dissipation system (4) is used to cool the retracted hydraulic oil, characterized in that: It also includes a filtration system (3), wherein the filtration system (3) comprises: The housing assembly has a first filter unit and a second filter unit (36) inside. The first filter unit and the second filter unit (36) have the same structure, but the overall size of the second filter unit (36) is smaller than that of the first filter unit. The first filter unit is used to perform a primary filtration on the hydraulic oil that is pumped back, and the second filter unit (36) is used to perform a secondary filtration on the hydraulic oil after the primary filtration. The cleaning unit (35) is located inside the housing assembly and extends from the first filter unit to the second filter unit (36). The impurity chamber (32) is detachably mounted on the outside of the housing assembly and can collect impurities filtered out by the first filter unit and the second filter unit (36).

2. The servo angle steel cutting hydraulic station according to claim 1, characterized in that, The outer shell assembly includes a top shell (31), and a secondary top shell (315) is connected to the bottom of the top shell (31) via a connecting rod (314). A secondary bottom shell (316) and a bottom shell (317) are sequentially fixedly connected to the bottom of the secondary top shell (315). The top shell (31), the secondary top shell (315), the secondary bottom shell (316), and the bottom shell (317) are arranged in the same center. The secondary top shell (315) and the secondary bottom shell (316) are both provided with a circular array of reflux holes (318). The diameter of the reflux holes (318) on the secondary bottom shell (316) is smaller than the diameter of the reflux holes (318) on the secondary top shell (315). The bottom of the secondary bottom shell (316) is connected to the bottom shell (317). The first filter unit is located inside the top shell (31), and the second filter unit (36) is arranged inside the second top shell (315).

3. The servo angle steel cutting hydraulic station according to claim 1, characterized in that, The first filter unit includes: The fixing ring (333) is connected to the inner wall of the top shell (31) through the first bracket, with a gap. The inside of the fixing ring (333) is connected to the connecting ring (335) through the second bracket, with a gap as well. A sleeve (334) is fixedly connected to the inner side of the connecting ring (335). Multiple liquid inlet grooves (3341) are arrayed on the side wall of the sleeve (334). A frustum-shaped filter screen (3310) is connected through the bottom of the sleeve (334). A frustum-shaped sealing plate (3311) is disposed at the bottom of the frustum-shaped filter screen (3310), and the frustum-shaped sealing plate (3311) is sealed and fitted to the inner wall of the secondary top shell (315); A guide assembly, positioned above the retaining ring (333), is used to guide hydraulic oil to the gap between the top shell (31) and the rotating ring (332); A floating assembly is disposed on a connecting ring (335) and located above a frustum-shaped filter screen (3310). An annular filter screen (336) is installed on the floating assembly, and the annular filter screen (336) is slidably sleeved on the outside of the sleeve post (334). The second filter unit (36) is installed on the inside of the secondary top shell (315) in the same manner.

4. A servo-driven angle steel cutting hydraulic station according to claim 3, characterized in that, The boot component includes: A rotating ring (332) is rotatably disposed on top of a fixed ring (333), and a conical guide plate (331) is disposed on the top of the rotating ring (332).

5. A servo-driven angle steel cutting hydraulic station according to claim 3, characterized in that, The floating component includes: Sleeve rods (337) are arranged in a ring array on the bottom surface of the connecting ring (335), and each sleeve rod (337) is provided with a spring (339) inside. Several sliding shafts (338) are provided and are correspondingly slidably disposed inside each of the sleeve rods (337). One end of the spring (339) is connected to the sliding shaft (338), and the other end of the spring (339) is fixedly connected to the inner wall of the sleeve rod (337).

6. A servo-driven angle steel cutting hydraulic station according to claim 3, characterized in that, The cleaning unit (35) includes: The rotating shaft (351) is connected to the guide components in the first filter unit and the second filter unit (36) respectively, and has a servo motor at the bottom for driving the rotating shaft (351) to rotate. Two scraping mechanisms are provided, with the same structure but different sizes, and are adapted to be installed in the areas of the No. 1 filter unit and the No. 2 filter unit (36). Taking the scraping mechanism installed inside the No. 1 filter unit as an example, the scraping mechanism includes a cleaning plate (353). The cleaning plate (353) is connected to the outer wall of the rotating ring (332) through the connecting frame (352), and is used to scrape the impurities on the frustum-shaped filter screen (3310) and the frustum-shaped sealing plate (3311) into the impurity bin (32).

7. A servo-driven angle steel cutting hydraulic station according to claim 6, characterized in that, The bottom surface of the annular filter (336) is provided with a number of oblique protrusions (34) arranged in an annular array, and the second filter unit (36) is provided with oblique protrusions (34) of the same structure. The top of the cleaning plate (353) is provided with an extension rod (37), and a ball seat (371) is provided above the extension rod (37). Inside the ball seat (371) is a spherical ball (372) that is used to cooperate with the inclined surface of the inclined protrusion (34).

8. A servo-driven angle steel cutting hydraulic station according to claim 2, characterized in that, The impurity chamber (32) includes a detachable first chamber (321) and a second chamber (322), each divided into two semicircles. The outer walls of the secondary top shell (315) and the secondary bottom shell (316) are provided with positioning rings (313). The first chamber (321) and the second chamber (322) are positioned and fixed on the outside of the positioning rings (313).

9. A servo-driven angle steel cutting hydraulic station according to claim 2, characterized in that, The filtration system (3) also includes an inlet (311) on the top shell (31) and a return pipe (312) on the bottom shell (317). The inlet (311) is connected to the heat dissipation system (4) through a pipe.

10. A servo-driven angle steel cutting hydraulic station according to claim 9, characterized in that, The hydraulic system (2) includes: The housing is fixedly mounted on the base (1), and the housing is divided into an oil tank (24) and an outer chamber (25). The oil tank (24) is used to store hydraulic oil. The filter system (3) is installed inside the outer chamber (25), and the bottom shell (317) is connected to the oil tank (24) through the return pipe (312). An oil pump (22) is installed on the top of the housing to realize the suction and return of hydraulic oil. The housing is also equipped with an electric motor (21) for driving the oil pump (22) to work, and the oil inlet of the oil pump (22) is connected to the oil tank (24) through an oil pipe (23). The valve assembly (26) is installed on the top of the housing and connected to the oil outlet of the oil pump (22) through a pipeline. The valve assembly (26) includes a directional valve, a pressure valve and a flow valve. The valve assembly (26) is connected to the servo angle steel cutting hydraulic rod and the heat dissipation system (4) through pipelines respectively.

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