Oil filtering device of hydraulic transmission box of forklift

Abstract

The utility model discloses an oil filtering device of a forklift hydraulic transmission box, which comprises a frame body, a plurality of gear oil discs and hydraulic oil discs are buckled on the top part of the frame body in two rows, and the gear oil discs and the hydraulic oil discs are respectively used for receiving gear oil and hydraulic oil discharged from the hydraulic transmission box; a first placing frame and a second placing frame are arranged at the top of the frame body and are used for placing a hydraulic transmission box; an oil filter tank is arranged in the frame body, a plurality of oil pipe joints are arranged at the top of the oil filter tank, the top ends of the oil pipe joints are communicated through hydraulic oil discs corresponding to oil return pipes, and the bottom ends of the oil pipe joints extend into the oil filter tank to be connected with an oil return filter for filtering hydraulic oil. The gearbox oil recovery device is reasonable in design structure and easy and convenient to operate, oil in a gearbox can be smoothly discharged, filtered, recycled and reused, oil recovery can be conducted on a plurality of gearboxes at the same time, the delivery test efficiency of a hydraulic box is greatly improved, and then the production efficiency of the hydraulic box is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of forklift manufacturing, in particular to an oil filter device of a forklift hydraulic transmission case. Background Art

[0002] In the manufacturing field of internal combustion counterbalanced forklifts, the hydraulic transmission, as an important part of the forklift, has a great impact on the overall stability and travel ability of the forklift. The gear oil and hydraulic oil in the forklift hydraulic transmission need to be filtered out after the factory test. Without an oil filter, it is difficult to drain the oil inside the hydraulic tank, which will leave a large amount of oil inside the hydraulic tank, increasing transportation costs and increasing the factory test time, thereby reducing the production efficiency of the hydraulic tank. Utility Model Content

[0003] The utility model aims to provide an oil filter device for a forklift hydraulic gearbox, which can smoothly discharge the oil in the gearbox and filter and recycle it for reuse, thereby greatly improving the factory test efficiency of the hydraulic box and further improving the production efficiency of the hydraulic box.

[0004] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0005] An oil filter device for a forklift hydraulic transmission comprises a frame, wherein the top portion of the frame is buckled with a plurality of gear oil pans and hydraulic oil pans in two rows, which are respectively used to receive the gear oil and hydraulic oil discharged from the hydraulic transmission; a first placement rack and a second placement rack are arranged on the top of the frame for placing the hydraulic transmission; an oil filter box is arranged inside the frame, and a plurality of oil pipe joints are arranged on the top of the oil filter box, and the top ends of the oil pipe joints are connected to the hydraulic oil pans corresponding to the return oil pipes, and the bottom ends of the oil pipe joints extend to the oil filter box and are connected to a return oil filter for filtering the hydraulic oil; an oil suction pipe is arranged at one end of the oil filter box away from the oil pipe joint, one end of which is connected to an external pump body, and the other end extends to the bottom of the oil filter box and is connected to an oil suction filter.

[0006] Preferably, the first placement rack and the second placement rack are respectively located above the gear oil pan and the hydraulic oil pan, the height of the first placement rack is lower than that of the second placement rack, and a slot is provided on the first placement rack at a position corresponding to the gear oil pan for clamping the flange on the hydraulic transmission.

[0007] Preferably, the oil filter box is provided with a first-stage filter limit plate, a second-stage filter limit plate and a third-stage filter limit plate with decreasing heights, and they are arranged in sequence along the direction from the return oil filter to the oil suction filter, dividing the oil filter box into three-stage filter areas.

[0008] Preferably, the top of the oil filter box is a detachable cover plate, and the cover plate is fixedly connected to the oil filter box by bolts.

[0009] Compared with the prior art, the beneficial effects of the utility model are as follows: the utility model has a reasonable design structure and is easy to operate. It can smoothly discharge the oil in the gearbox and filter and recycle it for reuse, and it can simultaneously recycle the oil in multiple gearboxes, thereby greatly improving the factory test efficiency of the hydraulic box and further improving the production efficiency of the hydraulic box. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a three-dimensional structural schematic diagram of an embodiment of the utility model;

[0011] Figure 2 It is a schematic cross-sectional structural diagram of an embodiment of the utility model.

[0012] In the figure: 1, frame, 2, gear oil pan, 3, hydraulic oil pan, 4, oil return pipe, 5, oil pipe joint, 6, oil filter box, 7, cover plate, 8, oil suction pipe, 9, first placement rack, 901, slot, 10, second placement rack, 11, return oil filter, 12, oil suction filter, 13, primary filter limit plate, 14, secondary filter limit plate, 15, tertiary filter limit plate. DETAILED DESCRIPTION

[0013] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", "vertical", "horizontal", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0014] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0015] like Figures 1 to 2As shown, the embodiment of the utility model includes a frame 1, and three gear oil pans 2 and hydraulic oil pans 3 are buckled in two rows on the top part of the frame 1, which are respectively used to receive the gear oil and hydraulic oil discharged from the hydraulic transmission box; a first placement rack 9 and a second placement rack 10 are arranged on the top of the frame 1, which are used to place the hydraulic transmission box; an oil filter box 6 is arranged inside the frame 1, and three oil pipe joints 5 are arranged on the top of the oil filter box 6, and the top of the oil pipe joint 5 is connected to the hydraulic oil pan 3 corresponding to the return oil pipe, and the bottom of the oil pipe joint 5 extends to the oil filter box 6 and is connected to an oil return filter 11 for filtering the hydraulic oil; an oil suction pipe 8 is arranged at one end of the oil filter box 6 away from the oil pipe joint 5, one end of which is connected to the external pump body, and the other end extends to the bottom of the oil filter box 6 and is connected to an oil suction filter 12.

[0016] Preferably, the first placement rack 9 and the second placement rack 10 are respectively located above the gear oil pan 2 and the hydraulic oil pan 3, the height of the first placement rack 9 is lower than that of the second placement rack 10, and a slot 901 is provided at the position of the first placement rack 9 corresponding to the gear oil pan 2, which is used to clamp the flange on the hydraulic transmission box; the oil filter box 6 is provided with a first-level filter limit plate 13, a second-level filter limit plate 14 and a third-level filter limit plate 15 with decreasing heights, and they are arranged in sequence along the direction from the return oil filter 11 to the oil suction filter 12, dividing the oil filter box 6 into three-level filtering areas; the top of the oil filter box 6 is a detachable cover plate 7, and the cover plate 7 is fixedly connected to the oil filter box 6 by bolts.

[0017] like Figure 2 As shown, first place the hydraulic gearbox on the first placement rack 9 and the second placement rack 10, and insert the flange on the gearbox into the card slot 901 to position and fix the gearbox. At this time, the gear oil end on the gearbox is aligned with the gear oil pan 2, and the hydraulic transmission oil end is aligned with the hydraulic oil pan 3. Open the end cover or the drain plug on the gearbox, and the gear oil flows into the gear oil pan 2, and the hydraulic oil flows into the hydraulic oil pan 3; the hydraulic oil flows into the oil filter box 6 through the return oil pipe 4, the oil pipe joint 5 and the return oil filter 11; the hydraulic oil in the oil filter box 6 is first located in The primary filter area on the side of the primary filter limit plate 13 is used for impurity precipitation. When the primary filter area is full, the upper clear hydraulic oil flows into the secondary filter area between the primary filter limit plate 13 and the secondary filter limit plate 14 and is precipitated again. In this way, the hydraulic oil is filtered through the secondary filter limit plate 14 and the tertiary filter limit plate 15 to ensure the recovery and reuse of the hydraulic oil. Then, by starting the external pump body, the hydraulic oil filtered in the oil filter box 6 is recovered and collected through the oil suction pipe 8 and the oil suction filter 12.

[0018] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An oil filter device for a hydraulic transmission of a forklift, It is characterized in that It comprises a frame body, and a plurality of gear oil pans and hydraulic oil pans are buckled in two rows on the top part of the frame body, which are respectively used to receive the gear oil and hydraulic oil discharged from the hydraulic transmission gearbox; a first placement rack and a second placement rack are arranged on the top of the frame body, for placing the hydraulic transmission gearbox; an oil filter box is arranged inside the frame body, and a plurality of oil pipe joints are arranged on the top of the oil filter box, and the top ends of the oil pipe joints are connected to the hydraulic oil pans corresponding to the return oil pipes, and the bottom ends of the oil pipe joints extend to the oil filter box and are connected to a return oil filter for filtering the hydraulic oil; an oil suction pipe is arranged on the end of the oil filter box away from the oil pipe joint, one end of which is connected to the external pump body, and the other end extends to the bottom of the oil filter box and is connected to an oil suction filter.

2. The oil filter device for a forklift hydraulic transmission according to claim 1, Features: The first placement rack and the second placement rack are respectively located above the gear oil pan and the hydraulic oil pan. The height of the first placement rack is lower than that of the second placement rack. A slot is provided at the position of the first placement rack corresponding to the gear oil pan for clamping the flange on the hydraulic transmission.

3. An oil filter device for a forklift hydraulic transmission according to claim 1 or 2, Features: The oil filter box is provided with a primary filter limit plate, a secondary filter limit plate and a tertiary filter limit plate with decreasing heights, and they are arranged in sequence from the return oil filter to the oil suction filter, dividing the oil filter box into three-level filter areas.

4. The oil filter device for a hydraulic transmission of a forklift according to claim 3, Features: The top of the oil filter box is a detachable cover plate, which is fixedly connected to the oil filter box by bolts.

Images