Efficient hydraulic driving device of crane

Abstract

The utility model discloses an efficient hydraulic driving device for a crane, which belongs to the technical field of crane driving devices and is characterized by comprising a base, a supporting table is fixed at the top of the base, and a hydraulic cylinder main body is fixedly connected to the left side of the top of the supporting table. The filtering assembly can effectively remove various impurities such as metal particles, organic impurities and water in hydraulic oil, so that the impurities can be prevented from entering hydraulic elements such as a hydraulic pump and a hydraulic cylinder body, element abrasion and blockage caused by the impurities are avoided, and the service life of the hydraulic elements is prolonged; the conveying assembly can limit impurities on a path leading to the filtering assembly, it is ensured that the impurities can be removed in time in the circulation process of hydraulic oil, damage of the impurities to other key hydraulic elements is avoided, and therefore efficient and normal operation of the whole hydraulic driving device is protected.

Description

TECHNICAL FIELD

[0001] The utility model relates to crane drive device technical field, especially a kind of crane high-efficiency hydraulic drive device. BACKGROUND

[0002] Crane is a kind of mechanical equipment for vertical lifting or vertical lifting and horizontal movement of heavy objects, it can lift and carry heavy objects within a certain range, main work includes hoisting, loading and unloading, installation and other operations, its working principle is to use mechanical structure and power system, the displacement of heavy objects is realized by the movement combination of various mechanisms, and hydraulic drive device is one of the key components of crane, hydraulic drive device can provide powerful power support for crane, ensure the safe, stable lifting of heavy objects.

[0003] The existing hydraulic drive device will produce metal particles and other impurities due to mutual friction and wear during long-term work, metal particles will flow with hydraulic oil into hydraulic pump and hydraulic cylinder and other components, they can scratch the precise mating surface, increase the internal leakage of components, reduce the working efficiency of hydraulic drive device, at the same time, the scratched surface will further aggravate wear, and thus reduce the service life of hydraulic drive device.

[0004] Therefore, a kind of crane high-efficiency hydraulic drive device is proposed. UTILITY MODEL CONTENT

[0005] The utility model aims at providing a kind of crane high-efficiency hydraulic drive device, can solve the problem that the existing hydraulic drive device will produce metal particles and other impurities due to mutual friction and wear during long-term work, metal particles will flow with hydraulic oil into hydraulic pump and hydraulic cylinder and other components, they can scratch the precise mating surface, increase the internal leakage of components, reduce the working efficiency of hydraulic drive device, at the same time, the scratched surface will further aggravate wear, and thus reduce the service life of hydraulic drive device.

[0006] To achieve the above object, the utility model provides the following technical scheme: a kind of crane high-efficiency hydraulic drive device, including base, the top of the base is fixed with support table, the left side of the top of support table is fixedly connected with hydraulic cylinder main body, the surface of hydraulic cylinder main body is fixedly connected with conveying assembly, the conveying assembly includes guide pipe, the bottom of guide pipe is fixedly connected with filter assembly;

[0007] The filter assembly comprises a shell, a movable frame, a filter screen, a first movable box and a second movable box, the shell is fixedly connected to the top of the support table, the movable frame is movably connected to the inside of the shell, the filter screen is fixedly connected to the inside of the movable frame, the first movable box and the second movable box are movably connected to the inside of the movable frame, the first movable box is located directly below the filter screen, the second movable box is located directly below the first movable box, the inside of the first movable box is provided with activated carbon, and the inside of the second movable box is provided with activated alumina.

[0008] Preferably, the right side of the top of the support table is fixedly connected with a hydraulic pump, the output end of the hydraulic pump is fixedly communicated with a first liquid guide pipe, the first liquid guide pipe is fixedly communicated with the hydraulic cylinder body on the side close to the bottom liquid inlet, the top of the surface of the first liquid guide pipe is fixedly communicated with a second liquid guide pipe, and the second liquid guide pipe is fixedly communicated with the hydraulic cylinder body on the side close to the top liquid inlet.

[0009] Preferably, one end of the guide pipe is fixedly communicated with the top of the shell, and the other end is fixedly communicated with a shunt pipe.

[0010] Preferably, the inside of the first liquid guide pipe on the side close to the second liquid guide pipe and the inside of the first liquid guide pipe and the second liquid guide pipe on the side close to the shunt pipe are provided with electromagnetic reversing valves.

[0011] Preferably, the inside of the movable frame is fixedly connected with an electric push rod, the telescopic end of the electric push rod is fixedly connected with a magnetic block, and the magnetic block is arranged on the top of the filter screen.

[0012] Preferably, the right side of the movable frame is fixedly connected with a sealing plate, the inside of the sealing plate is threadedly connected with a screw, and the right side of the shell is provided with a threaded groove matched with the screw.

[0013] Preferably, the top of the base is fixedly connected with an oil tank, the top of the oil tank is fixedly communicated with the shell, the surface of the oil tank is fixedly communicated with an oil suction pipe, and the other end of the oil suction pipe penetrates through the support table and is fixedly communicated with the oil suction end of the hydraulic pump.

[0014] Preferably, the front side and the rear side of the movable frame are fixedly connected with limiting blocks, and the inner wall of the shell is provided with sliding grooves matched with the limiting blocks.

[0015] Compared with the prior art, the filter assembly has the advantages that:

[0016] 1、The application sets the filter assembly, the filter assembly filters through the filter screen, activated carbon and activated alumina, effectively removes various impurities such as metal particles, organic impurities and moisture in the hydraulic oil, so that the impurities can be prevented from entering the hydraulic pump and the hydraulic cylinder body and other hydraulic elements, the element wear and blockage caused by the impurities are avoided, and the service life of the hydraulic element is prolonged;

[0017] 2、The application sets the conveying assembly, the conveying assembly can guide the hydraulic oil flowing out of the hydraulic cylinder body to the filter assembly, so that the impurities can be limited on the path to the filter assembly, the impurities can be removed in time during the circulation process of the hydraulic oil, in this way, the cleanliness of the hydraulic oil in the entire hydraulic device is ensured, the damage of the impurities to other key hydraulic elements is avoided, and the efficient and normal operation of the entire hydraulic drive device is protected. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is a whole structure diagram of the crane efficient hydraulic drive device of the utility model;

[0019] Figure 2 It is a side view of the utility model Figure 1 ;

[0020] Figure 3 It is a structure schematic view of the conveying assembly of the utility model;

[0021] Figure 4 It is a structure schematic view of the filter assembly of the utility model;

[0022] Figure 5 It is an enlarged schematic view of A in the utility model Figure 4 ;

[0023] In the drawing, 1, base; 2, support table; 3, hydraulic cylinder body; 4, conveying assembly; 401, guide pipe; 402, hydraulic pump; 403, first liquid guide pipe; 404, second liquid guide pipe; 405, shunt pipe; 406, electromagnetic reversing valve; 5, filter assembly; 501, shell; 502, movable frame body; 503, filter screen; 504, first movable box; 505, second movable box; 6, electric push rod; 7, magnetic block; 8, sealing plate; 9, screw; 10, oil tank; 11, oil suction pipe; 12, limit block. DETAILED DESCRIPTION

[0024] With reference to the drawings of the embodiments of the present application, the technical solutions in the embodiments of the present application will be described clearly and completely. Obviously, the described embodiments are only some of the embodiments of the present application, but not all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative efforts belong to the scope of the present application.

[0025] Please refer to Figures 1-5 The present application provides technical solutions:

[0026] A kind of crane efficient hydraulic drive device, including base 1, the top of base 1 is fixed with support table 2, the left side of support table 2 top is fixedly connected with hydraulic cylinder main body 3, the surface of hydraulic cylinder main body 3 is fixedly connected with conveying assembly 4, conveying assembly 4 includes guide pipe 401, the bottom of guide pipe 401 is fixedly connected with filter assembly 5;

[0027] Filter assembly 5 includes shell 501, movable frame body 502, filter screen 503, first movable box 504 and second movable box 505, shell 501 is fixedly connected at the top of support table 2, movable frame body 502 is movably connected in the inside of shell 501, filter screen 503 is fixedly connected in the inside of movable frame body 502, first movable box 504 and second movable box 505 are movably connected in the inside of movable frame body 502, first movable box 504 is located just below filter screen 503, second movable box 505 is located just below first movable box 504, the inside of first movable box 504 is provided with activated carbon, the inside of second movable box 505 is provided with activated alumina.

[0028] In the present embodiment: by setting filter assembly 5, when hydraulic oil enters the inside of shell 501, filter screen 503 can intercept metal particles in hydraulic oil, metal particles will be intercepted on the surface of filter screen 503, so as to realize the preliminary purification of hydraulic oil, activated carbon in first movable box 504 can adsorb organic impurity molecules in hydraulic oil to the pore surface of activated carbon, so as to remove organic impurities in hydraulic oil, restore part of the performance of hydraulic oil, and activated alumina in second movable box 505 can adsorb moisture in hydraulic oil in the microporous structure inside it, so as to effectively prevent the emulsification of hydraulic oil, maintain the lubricating property and chemical stability of hydraulic oil, and further ensure the efficient operation of the whole hydraulic drive device.

[0029] Specifically, as Figure 1 , Figure 2 , Figure 3As shown, the right side of the top of the support platform 2 is fixedly connected with a hydraulic pump 402, the output end of the hydraulic pump 402 is fixedly communicated with a first liquid guide pipe 403, the first liquid guide pipe 403 is fixedly communicated with the bottom liquid inlet of the hydraulic cylinder body 3, the top of the surface of the first liquid guide pipe 403 is fixedly communicated with a second liquid guide pipe 404, and the second liquid guide pipe 404 is fixedly communicated with the top liquid inlet of the hydraulic cylinder body 3.

[0030] Specifically, as shown in the Figure 1 , Figure 2 , Figure 3 As shown, one end of the guide pipe 401 is fixedly communicated with the top of the shell 501, and the other end is fixedly communicated with a shunt pipe 405, and the two ends of the shunt pipe 405 are fixedly communicated with the first liquid guide pipe 403 and the second liquid guide pipe 404, respectively.

[0031] Specifically, as shown in the Figure 1 , Figure 2 , Figure 3 The inside of the first liquid guide pipe 403 near the second liquid guide pipe 404 and the inside of the first liquid guide pipe 403 and the second liquid guide pipe 404 near the shunt pipe 405 are provided with an electromagnetic reversing valve 406.

[0032] In this embodiment: through the above setting, the first liquid guide pipe 403 is the main channel for the hydraulic oil to be delivered from the hydraulic pump 402 to the bottom liquid inlet of the hydraulic cylinder body 3, which plays a key role in connecting the hydraulic pump 402 and the hydraulic cylinder, and ensures that the hydraulic oil can smoothly enter the hydraulic cylinder body 3, the second liquid guide pipe 404 is mainly used for delivering hydraulic oil to the top liquid inlet of the hydraulic cylinder body 3, which can cooperate with the first liquid guide pipe 403 to realize bidirectional hydraulic oil supply to the hydraulic cylinder body 3, the electromagnetic reversing valve 406 can accurately control the flow direction of the hydraulic oil, when the hydraulic cylinder piston needs to be extended, the electromagnetic reversing valve 406 can make the hydraulic oil enter the bottom liquid inlet of the hydraulic cylinder from the first liquid guide pipe 403; when the piston needs to be retracted, the channel can be switched again to make the hydraulic oil enter the top liquid inlet of the hydraulic cylinder from the second liquid guide pipe 404, and at the same time, the electromagnetic reversing valve can guide the backflow of the hydraulic oil into the guide pipe 401, avoiding the mixing of backflow of the hydraulic oil containing impurities with clean hydraulic oil, thereby improving the use effect.

[0033] Specifically, as shown in the Figure 5 The inside of the movable frame body 502 is fixedly connected with an electric push rod 6, the telescopic end of the electric push rod 6 is fixedly connected with a magnetic block 7, and the magnetic block 7 is arranged on the top of the filter screen 503.

[0034] Specifically, as shown in the Figure 5 The right side of the movable frame body 502 is fixedly connected with a sealing plate 8, the inside of the sealing plate 8 is threadedly connected with a screw 9, and the right side of the shell 501 is provided with a threaded groove matched with the screw 9.

[0035] In the embodiment, when the filter screen 503 needs to be cleaned, the electric push rod 6 drives the magnetic block 7 to move on the top of the filter screen 503, and the magnetic block 7 can adsorb the metal particle impurities on the surface of the filter screen 503, so that the filtering performance of the filter screen 503 is restored, thereby improving the filtering effect. The sealing plate 8 can seal the right opening of the movable frame body 502, preventing the hydraulic oil from leaking from the gap between the movable frame body 502 and the shell 501 during the filtering process. The screw 9 and the threaded groove can fix the position of the sealing plate 8, and only need to unscrew the screw 9 to conveniently remove the sealing plate 8, and then the movable frame body 502 is extracted from the shell 501, so that the filtering assembly 5 is maintained or replaced, thereby improving the use convenience.

[0036] Specifically, as shown in Figure 1 、 Figure 2 The top of the base 1 is fixedly connected with an oil tank 10, and the top of the oil tank 10 is fixedly communicated with the shell 501. The surface of the oil tank 10 is fixedly communicated with an oil suction pipe 11, and the other end of the oil suction pipe 11 penetrates through the support table 2 and is fixedly communicated with the oil suction end of the hydraulic pump 402.

[0037] Specifically, as shown in Figure 4 The front side and the rear side of the movable frame body 502 are fixedly connected with limiting blocks 12, and the inner wall of the shell 501 is provided with sliding grooves matched with the limiting blocks 12.

[0038] In the embodiment, through the above settings, the oil tank 10 can store hydraulic oil, so that the hydraulic pump 402 can be continuously supplied with hydraulic oil. The hydraulic pump 402 can suck the hydraulic oil in the oil tank 10 through the oil suction pipe 11, and then guide the hydraulic oil into the inside of the hydraulic cylinder body 3 through the first liquid guide pipe 403 or the second liquid guide pipe 404, so that the stable operation of the hydraulic drive device can be maintained. The cooperation of the limiting blocks 12 and the sliding grooves can prevent the movable frame body 502 from being displaced or shaken due to the flow impact of the hydraulic oil, and can also facilitate the quick and accurate installation of the movable frame body 502 to the correct position inside the shell 501, thereby improving the use effect.

[0039] Working principle: the hydraulic pump 402 starts through the oil suction pipe 11 can pump the hydraulic oil in the oil tank 10, then through the first liquid guide pipe 403 into the hydraulic cylinder main body 3 bottom inlet after the hydraulic oil is pressurized, so that the hydraulic cylinder main body 3 piston movement can be pushed, realize the various actions of the crane, when the crane needs to act back, control electromagnetic reversing valve 406, make the hydraulic oil through the first liquid guide pipe 403 into the hydraulic cylinder main body 3 bottom inlet, then the hydraulic cylinder main body 3 out of the hydraulic oil will enter the shell 501 through the guide pipe 401, when the hydraulic oil contacts the filter screen 503 in the movable frame 502, the filter screen 503 can block the metal particles in the hydraulic oil, so that it is accumulated on the top of the filter screen 503, when the metal particles accumulate too much, start the electric push rod 6, the electric push rod 6 will move the magnetic block 7 on the top of the filter screen 503, the magnetic block 7 can move the metal particles on the top of the filter screen 503 when adsorbing, then the hydraulic oil after preliminary filtration will continue to flow down through the first movable box 504 and the second movable box 505, the activated carbon in the first movable box 504 can adsorb the organic impurity molecules in the hydraulic oil to the pore surface of activated carbon, the activated alumina in the second movable box 505 can adsorb the water in the hydraulic oil in its internal microporous structure, finally the hydraulic oil after multiple filtration purification will flow back to the oil tank 10, form a complete hydraulic drive cycle.

[0040] The above is only the preferred embodiment of the present application, and is not used to limit the present application, any modification, equivalent replacement and improvement made within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims

1. A hoist high-efficiency hydraulic drive device comprising a base (1), characterized in that: The top of the base (1) is fixed with a support table (2), the left side of the top of the support table (2) is fixedly connected with a hydraulic cylinder body (3), the surface of the hydraulic cylinder body (3) is fixedly communicated with a conveying assembly (4), the conveying assembly (4) comprises a guide pipe (401), the bottom of the guide pipe (401) is fixedly communicated with a filter assembly (5). The filter assembly (5) comprises an outer shell (501), a movable frame (502), a filter screen (503), a first movable box (504) and a second movable box (505), the outer shell (501) is fixedly connected at the top of the support table (2), the movable frame (502) is movably connected in the outer shell (501), the filter screen (503) is fixedly connected in the movable frame (502), the first movable box (504) and the second movable box (505) are movably connected in the movable frame (502), the first movable box (504) is located directly below the filter screen (503), the second movable box (505) is located directly below the first movable box (504), the inside of the first movable box (504) is provided with activated carbon, and the inside of the second movable box (505) is provided with activated alumina.

2. A high efficiency hydraulic drive for a crane as claimed in claim 1, characterised in that: The right side of the top of the support table (2) is fixedly connected with a hydraulic pump (402), the output end of the hydraulic pump (402) is fixedly communicated with a first liquid guide pipe (403), one side of the first liquid guide pipe (403) close to the bottom liquid inlet of the hydraulic cylinder body (3) is fixedly communicated with the hydraulic cylinder body (3), and the top of the surface of the first liquid guide pipe (403) is fixedly communicated with a second liquid guide pipe (404).

3. A high efficiency hydraulic drive for a crane as claimed in claim 2, characterised in that: One end of the guide pipe (401) is fixedly communicated with the top of the outer shell (501), and the other end is fixedly communicated with a shunt pipe (405), and the two ends of the shunt pipe (405) are fixedly communicated with the first liquid guide pipe (403) and the second liquid guide pipe (404) respectively.

4. A high efficiency hydraulic drive for a crane as claimed in claim 3, characterised in that: The inside of the first liquid guide pipe (403) close to the second liquid guide pipe (404) and the inside of the first liquid guide pipe (403) and the second liquid guide pipe (404) close to the shunt pipe (405) are provided with electromagnetic reversing valves (406).

5. A high efficiency hydraulic drive for a crane as claimed in claim 1, wherein: The inside of the movable frame (502) is fixedly connected with an electric push rod (6), the telescopic end of the electric push rod (6) is fixedly connected with a magnetic suction block (7), and the magnetic suction block (7) is arranged at the top of the filter screen (503).

6. A high efficiency hydraulic drive for a crane as claimed in claim 1, characterized in that: The right side of the movable frame (502) is fixedly connected with a sealing plate (8), the inside of the sealing plate (8) is threadedly connected with a screw (9), and the right side of the outer shell (501) is provided with a threaded groove matched with the screw (9).

7. A high efficiency hydraulic drive for a crane as claimed in claim 2, characterised in that: The top of the base (1) is fixedly connected with an oil tank (10), and the top of the oil tank (10) is fixedly communicated with the outer shell (501), the surface of the oil tank (10) is fixedly communicated with an oil suction pipe (11), and the other end of the oil suction pipe (11) penetrates through the support table (2) and is fixedly communicated with the oil suction end of the hydraulic pump (402).

8. A high efficiency hydraulic drive for a crane as claimed in claim 1, characterized in that: The front side and the back side of the active frame body (502) are fixedly connected with limiting blocks (12), and the inner wall of the shell (501) is provided with sliding grooves matched with the limiting blocks (12).

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