Hydraulic oil storage device of hydraulic equipment

Abstract

The hydraulic equipment hydraulic oil storage device comprises an oil tank body and an oil tank base, extension plates are arranged on the two sides of the oil tank body, the oil tank body is installed on the oil tank base, a strip-shaped through hole is formed in the middle of the oil tank base, movable seats which are symmetrical to each other and can move relatively are arranged in the strip-shaped through hole, and two vertical holes are formed in each movable seat; sliding rods are slidably connected into the two vertical holes, and pressing plates are fixedly connected to the upper ends of the sliding rods. Inclined slideways are arranged at the positions, close to each other, of the lower half parts of the sliding rods, inclined guide plates are arranged on the lower side of the oil tank base, and the inclined slideways are slidably connected to the inclined guide plates; a lifting limiting plate is arranged on the oil tank base and can be attached to the outer surface of the oil tank body. Through movement of the movable seat and cooperation of the sliding rod and the inclined guide plate, automatic downward pressing and limiting of the pressing plate are achieved, complex operations such as manual tightening of a large number of screws are not needed, the efficiency of installing the oil tank body on the oil tank base is greatly improved, and the installation difficulty is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of hydraulic equipment, and in particular to a hydraulic oil storage device for hydraulic equipment. Background Art

[0002] Hydraulic oil storage devices are usually equipped with filter elements to filter impurities in the oil. As the use time increases, the filter element will gradually become clogged, reducing the filtering effect, so the device needs to be disassembled regularly to replace the filter element to ensure the cleanliness of the hydraulic oil. And after long-term use, contaminants such as sludge, metal chips, and impurities will accumulate inside the storage device. These impurities will affect the performance of the hydraulic oil, accelerate the wear of hydraulic components, and even cause system failures, so they need to be disassembled and thoroughly cleaned.

[0003] The Chinese invention patent with application number CN201810618677.X discloses a hydraulic oil storage device for hydraulic equipment, including a mounting seat, an oil tank is placed on the top of the mounting seat, two mounting grooves are provided at the bottom of the oil tank, two mounting blocks are fixedly installed on the top of the mounting seat, and the two mounting blocks are respectively clamped with the two mounting grooves, two support plates are fixedly installed on the top of the mounting seat, the oil tank is located between the two support plates, both support plates are provided with sliding holes, a slide plate is slidably installed in the sliding holes, both sides of the oil tank are provided with fixed grooves, and the two slide plates are respectively adapted to the two fixed grooves, a moving groove is provided on the top inner wall of the sliding hole, a moving plate is slidably installed in the moving groove, a clamping block is fixedly installed at the bottom of the moving plate, a clamping groove is provided on the top of the slide plate, and the clamping block is clamped with the clamping groove. The invention is convenient for disassembling the oil tank and cleaning the inside of the oil tank, and has a simple structure and is easy to use.

[0004] However, the operation of the prior art is still relatively complicated. For example, when using it, on the one hand, it is necessary to rotate the knob first to drive the block to disengage from the slot, and then pull the slide plate to disengage from the fixed slot; on the other hand, the connection structure is usually provided in multiple pieces (at least two on the left and right, and one on the front, back, left and right is required under normal circumstances), and they need to be disassembled one by one when disassembling. Therefore, a hydraulic oil storage device for hydraulic equipment that is easy to install and disassemble is needed. Summary of the invention

[0005] In view of the problems existing in the prior art, the present invention provides a hydraulic oil storage device for hydraulic equipment. The purpose of the present invention is to provide a hydraulic oil storage device for hydraulic equipment to solve the problems raised in the above background technology.

[0006] The present invention is achieved in this way. A hydraulic oil storage device for hydraulic equipment comprises a tank body and a tank base, the tank body has extension plates on both sides, the tank body is installed on the tank base, a strip through hole is provided in the middle of the tank base, a movable seat which is symmetrical and can move relatively is provided in the strip through hole, the movable seat is provided with two vertical holes, sliding rods are slidably connected in the two vertical holes, and a pressure plate is fixedly connected to the upper end of the sliding rod; an inclined slide is provided at a position close to each other on the lower half of the sliding rod, an inclined guide plate is provided on the lower side of the tank base, and the inclined slide is slidably connected to the inclined guide plate; a lifting limit plate is provided on the tank base, and the lifting limit plate can fit the outer surface of the tank body.

[0007] As a preferred embodiment of the present invention, a bearing seat is fixedly connected to the lower side of the oil tank base, a screw rod is rotatably connected to the bearing seat, a driving member is fixedly connected to one end of the screw rod, a screw rod sleeve is connected to the screw rod, the screw rod sleeve is fixedly connected to the movable seat, and the movable seat is slidably connected to the strip-shaped through hole.

[0008] As a preferred embodiment of the present invention, the inclined guide plate is fixedly connected to the lower side of the oil tank base. This method is relatively firm, and can be connected by welding, for example.

[0009] As a preferred embodiment of the present invention, a support frame is fixedly connected to the lower side of the oil tank base, the support frame is a U-shaped structural plate, and one end of the screw rod passes through one of the support frames, and the driving member is fixedly connected to the support frame.

[0010] As a preferred embodiment of the present invention, connecting rods are fixedly connected to both sides of the inclined guide plate, and connecting plates are fixedly connected to the ends of the connecting rods, and the connecting plates are fixedly connected to the lifting limit plates; A strip-shaped step hole is provided on the oil tank base, the upper end of the lifting limit plate includes a first limit strip, and the middle part of the lifting limit plate includes a second limit strip. When the lifting limit plate is located at the upper working position, the upper surface of the second limit strip is attached to the lower surface of the oil tank base; when the lifting limit plate is located at the lower working position, the first limit strip is located in the strip-shaped step hole.

[0011] As a preferred embodiment of the present invention, a fixed limit plate is fixedly connected to the upper surface of the oil tank base, and the fixed limit plate is aligned with one set of lifting limit plates.

[0012] As a preferred embodiment of the present invention, a notch connected to the vertical hole is provided on the movable seat, a limiting slide rail is fixedly connected to one side of the slide rod, a bearing seat is slidably connected to the limiting slide rail, a universal ball is fixedly connected to the upper surface of the bearing seat, and the bearing seat is located in the strip-shaped through hole.

[0013] As a preferred embodiment of the present invention, there are four connecting rods, which are respectively fixedly connected to the upper and lower positions of the side wall of the inclined guide plate; The inclined guide plate is a rectangular plate, the two slide bars are respectively connected to the edge of the inclined guide plate through inclined slideways, and the slide bar is located between the upper and lower connecting bars.

[0014] As a preferred embodiment of the present invention, both sides of the pressing plate are provided with clearance grooves, and a pressing block is fixedly connected to the lower side of the pressing plate.

[0015] As a preferred embodiment of the present invention, the width dimension of the strip-shaped through hole is smaller than the width dimension of the oil tank body, and the length dimension of the strip-shaped through hole is larger than the length dimension of the oil tank body.

[0016] Compared with the prior art, the present invention has the following beneficial effects: 1. Convenience of installation: Through the movement of the moving seat and the cooperation of the slide rod and the inclined guide plate, the pressure plate can be automatically pressed down to limit the position. There is no need for complex operations such as manually tightening a large number of screws, which greatly improves the efficiency of installing the fuel tank body on the fuel tank base and reduces the difficulty of installation.

[0017] 2. Stability: The pressure plates press the oil tank body from two opposite sides, and the lifting limit plates fit and limit from the other two sides. This all-round limiting method can effectively prevent the oil tank body from displacement and shaking during use, ensure the stability of the hydraulic oil storage device during the operation of the hydraulic equipment, and improve the safety of equipment operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of a hydraulic oil storage device for hydraulic equipment provided by an embodiment of the present invention; Figure 2 The embodiment of the present invention provides Figure 1 A schematic diagram of the enlarged structure of part A; Figure 3 The embodiment of the present invention provides Figure 1 A schematic diagram of the enlarged structure of part B; Figure 4 The embodiment of the present invention provides Figure 1 A schematic diagram of the enlarged structure of the middle C part; Figure 5 is a schematic diagram of a structure in which the fuel tank body is omitted provided by an embodiment of the present invention; Figure 6 The embodiment of the present invention provides Figure 5 Schematic diagram of the enlarged structure of part D.

[0019] In the figure: 1. Oil tank body; 2. Oil tank base; 3. Extension plate; 4. Strip through hole; 5. Moving seat; 6. Vertical hole; 7. Slide rod; 8. Pressing plate; 9. Inclined slideway; 10. Inclined guide plate; 11. Lifting limit plate; 12. Bearing seat; 13. Screw rod; 14. Driving member; 15. Screw rod sleeve; 16. Support frame; 17. Connecting rod; 18. Connecting plate; 19. Strip step hole; 20. First limit strip; 21. Second limit strip; 22. Fixed limit plate; 23. Notch; 24. Limiting slide rail; 25. Bearing seat; 26. Universal ball; 27. Make way groove; 28. Pressing block. DETAILED DESCRIPTION

[0020] In order to further understand the content, features and effects of the present invention, the following embodiments are given as examples and described in detail with reference to the accompanying drawings.

[0021] The structure of the present invention is described in detail below in conjunction with the accompanying drawings.

[0022] like Figures 1 to 6 As shown, a hydraulic oil storage device for hydraulic equipment provided by an embodiment of the present invention comprises a tank body 1 and a tank base 2, the tank body 1 having extension plates 3 on both sides, the tank body 1 being installed on the tank base 2, a strip through hole 4 being provided in the middle of the tank base 2, a moving seat 5 which is symmetrical and can move relatively is provided in the strip through hole 4, two vertical holes 6 are provided on the moving seat 5, a sliding rod 7 is slidably connected in both the vertical holes 6, a pressing plate 8 is fixedly connected to the upper end of the sliding rod 7; an inclined slide 9 is provided at a mutually close position of the lower half of the sliding rod 7, an inclined guide plate 10 is provided on the lower side of the tank base 2, the inclined slide 9 is slidably connected to the inclined guide plate 10; a lifting limit plate 11 is provided on the tank base 2, and the lifting limit plate 11 can be attached to the outer surface of the tank body 1.

[0023] With this setup, the following steps are included: Initial state: the oil tank body 1 is placed on the oil tank base 2 , at which time the movable seat 5 is located on both sides of the strip through hole 4 , the pressing plate 8 is at a higher position, and the lifting limit plate 11 is at a lower position and is not in contact with the oil tank body 1 .

[0024] Installation limit process: The two moving seats 5 are driven to approach each other, and the moving seats 5 move along the strip-shaped through holes 4. Since the slide bar 7 is inserted into the vertical hole 6 of the moving seat 5, the moving seat 5 drives the slide bar 7 to move synchronously. The inclined slide 9 at the lower half of the slide bar 7 is slidably connected to the inclined guide plate 10. When the slide bar 7 moves horizontally with the moving seat 5, the inclined slide 9 slides on the inclined guide plate 10. Due to the inclined structure of the inclined guide plate 10, the slide bar 7 will descend along the inclined direction of the inclined guide plate 10, thereby driving the pressure plate 8 fixed on the upper end of the slide bar 7 to descend until the pressure plate 8 is pressed on the extension plate 3 of the oil tank body 1, thereby realizing the limitation of the opposite sides of the oil tank body 1. Subsequently, the lifting limit plate 11 is controlled to rise so as to fit the outer surface of the tank body 1 , thereby limiting the other two sides of the tank body 1 , and completing the installation and limiting work of the entire tank body 1 . Disassembly and limit release process: the two moving seats 5 are moved away from each other, the slide bar 7 moves horizontally with the moving seat 5, the inclined slideway 9 slides in the opposite direction on the inclined guide plate 10, the slide bar 7 rises along the inclined guide plate 10, driving the pressure plate 8 to rise, and releasing the pressure on the extension plate 3 of the oil tank body 1. At the same time, the lifting limit plate 11 is lowered to release the limits on the other two sides of the oil tank body 1, and the oil tank body 1 can be disassembled from the oil tank base 2.

[0025] Specifically, the movable seat 5 is driven in the following manner: a bearing seat 12 is fixedly connected to the lower side of the oil tank base 2, a screw rod 13 is rotatably connected to the bearing seat 12, one end of the screw rod 13 is fixedly connected to a driving member 14 (such as a motor), a screw rod sleeve 15 is connected to the screw rod 13, the screw rod sleeve 15 is fixedly connected to the movable seat 5, and the movable seat 5 is slidably connected to the strip-shaped through hole 4.

[0026] When the oil tank body 1 needs to be installed or removed, the driving member 14 (such as a motor) is started. The motor starts to run, converts electrical energy into mechanical energy, and outputs rotational power. The rotational power of the motor is transmitted to the screw 13 fixedly connected thereto, causing the screw 13 to start rotating in the bearing seat 12. Since the screw 13 and the screw sleeve 15 are threadedly matched, when the screw 13 rotates, the screw sleeve 15 will move along the axial direction of the screw 13. The screw sleeve 15 is fixedly connected to the moving seat 5, so the movement of the screw sleeve 15 will drive the moving seat 5 to move synchronously. The moving seat 5 slides in the strip through hole 4 to achieve a position change in the horizontal direction. When installing the oil tank body 1, the motor rotates forward, and the screw 13 drives the screw sleeve 15 and the moving seat 5 to move closer to each other; when disassembling the oil tank body 1, the motor rotates reversely, and the screw 13 drives the screw sleeve 15 and the moving seat 5 away from each other. The movement of the moving seat 5 further drives the sliding rod 7 to move, and the sliding rod 7 realizes the lifting and lowering of the pressing plate 8 through the cooperation of the inclined slideway 9 and the inclined guide plate 10, thereby pressing and limiting or releasing the limit operation on the fuel tank body 1. At the same time, the movement state of the moving seat 5 is also related to the control of the lifting limit plate 11, completing the installation limit or disassembly release of the fuel tank body 1 in all directions.

[0027] Specifically, the installation methods of the inclined guide plate 10 include the following two methods: The first method is that the inclined guide plate 10 is fixedly connected to the lower side of the oil tank base 2. This method is relatively strong, and can be connected by welding, for example.

[0028] The second type: a support frame 16 is fixedly connected to the lower side of the oil tank base 2 , the support frame 16 is a U-shaped structural plate, and one end of the screw rod 13 passes through one of the support frames 16 , and the driving member 14 is fixedly connected to the support frame 16 .

[0029] The inclined guide plate 10 is fixedly connected with connecting rods 17 on both sides, and the ends of the connecting rods 17 are fixedly connected with connecting plates 18, and the connecting plates 18 are fixedly connected to the lifting and limiting plates 11; a strip-shaped step hole 19 is opened on the oil tank base 2, and the upper end of the lifting and limiting plate 11 includes a first limit strip 20, and the middle part of the lifting and limiting plate 11 includes a second limit strip 21. When the lifting and limiting plate 11 is located in the upper working position, the upper surface of the second limit strip 21 is attached to the lower surface of the oil tank base 2; when the lifting and limiting plate 11 is located in the lower working position, the first limit strip 20 is located in the strip-shaped step hole 19.

[0030] With this arrangement, when the moving seat 5 approaches the oil tank body 1, the slide bar 7 will slide down along the inclined guide plate 10, thereby fixing the oil tank body 1 through the pressure plate 8; at the same time, the slide bar 7 will also move the lifting limit plate 11 up through the inclined guide plate 10, the connecting rod 17, and the connecting plate 18, thereby completing the automatic rise of the lifting limit plate 11, and then limiting the oil tank body 1. Conversely, in the process of disassembling the oil tank body 1, the lifting limit plate 11 can also be automatically driven to descend, thereby releasing the limit. The function of the first limit bar 20 and the second limit bar 21 is to limit the size of the lifting limit plate 11 moving up and down.

[0031] Furthermore, a fixed limit plate 22 is fixedly connected to the upper surface of the oil tank base 2, and the fixed limit plate 22 is aligned with one set of lifting limit plates 11. When installing the oil tank body 1, the oil tank body 1 can be attached to the fixed limit plate 22 to improve the position accuracy during placement.

[0032] Furthermore, the movable seat 5 is provided with a notch 23 connected to the vertical hole 6, and one side of the slide rod 7 is fixedly connected to a limit slide rail 24, and a bearing seat 25 is slidably connected in the limit slide rail 24, and a universal ball 26 is fixedly connected to the upper surface of the bearing seat 25, and the bearing seat 25 is located in the strip through hole 4. During disassembly, the screw rod 13 rotates to drive the movable seat 5 to open. In the process of opening the movable seat 5, the slide rod 7 rises, driving the bearing plate to rise until the universal ball 26 fits the bottom surface of the tank body 1, and lifts the tank body 1. In this case, as long as the tank body 1 can be pushed, it can be removed without lifting the tank body 1. And in this process, the lifting limit plate 11 automatically descends to release the limit on the tank body 1, which is convenient for the sliding disassembly of the tank body 1. On the contrary, when installing, in the process of moving the seats 5 to approach each other, the universal ball 26 is in the state of lifting the fuel tank body 1. At this time, the slide bar 7 can easily push the fuel tank body 1 to the center position. When the pressing plate 8 presses the extension plate 3 of the fuel tank body 1, the universal ball 26 continues to descend, and the fuel tank body 1 falls exactly on the fuel tank base 2. In this case, even if the placement position is slightly deviated, the position can be automatically corrected in the process.

[0033] Specifically, there are four connecting rods 17, which are fixedly connected to the upper and lower positions of the side wall of the inclined guide plate 10; the inclined guide plate 10 is a rectangular plate, and the two slide bars 7 are connected to the edge of the inclined guide plate 10 through the inclined slideway 9, and the slide bar 7 is located between the upper and lower connecting rods 17. The two sides of the pressing plate 8 are provided with a clearance groove 27 (to prevent the oil pipe from being pressed), and the lower side of the pressing plate 8 is fixedly connected with a pressing block 28. The width dimension of the strip through hole 4 is smaller than the width dimension of the oil tank body 1, and the length dimension of the strip through hole 4 is larger than the length dimension of the oil tank body 1.

[0034] Working principle of the present invention: Overall structure foundation: The core of the storage device is composed of the oil tank body 1, the oil tank base 2 and a series of auxiliary limit and drive structures. The extension plates 3 on both sides of the oil tank body 1 provide a focus point for the limit, and the oil tank base 2 serves as a basic platform for carrying and installing various structures, and its strip-shaped through holes 4 provide a track for the movement of the moving seat 5. Driving principle of the moving seat: the bearing seat 12 on the lower side of the oil tank base 2 supports the screw rod 13 to rotate, and one end of the screw rod 13 is connected to the driving member 14 (such as a motor). The motor runs to output rotational power, driving the screw rod 13 to rotate. The screw rod 13 is threadedly matched with the screw rod sleeve 15. The rotation of the screw rod causes the screw rod sleeve 15 to move along the screw rod axial direction, thereby driving the moving seat 5 fixed thereto to slide horizontally in the strip through hole 4, so as to adjust the position of the moving seat 5 to move closer or farther from each other. The limiting principle of the pressure plate: when the moving seat 5 moves, the slide bar 7 inserted in its vertical hole 6 moves synchronously. The inclined slideway 9 on the lower part of the slide bar 7 is slidably connected with the inclined guide plate 10 on the lower side of the oil tank base 2. When the slide bar 7 moves horizontally, the inclined slideway 9 slides on the inclined guide plate 10. Due to the inclined structure of the inclined guide plate 10, the slide bar 7 rises and falls along the inclined direction of the inclined guide plate 10. The rise or fall of the slide bar 7 drives the pressure plate 8 fixed at the upper end to move. When installing, the pressure plate 8 is lowered and pressed on the extension plate 3 of the oil tank body 1 to limit the relative sides of the oil tank body 1; when disassembling, the pressure plate 8 rises to release the limit. Working principle of the lifting limit plate: There are two ways to install the inclined guide plate 10. The first is to fix it directly on the lower side of the oil tank base 2. In the second way, the support frame 16 on the lower side of the oil tank base 2 fixes the drive member 14 and supports the screw rod 13. The inclined guide plate 10 is connected to the lifting limit plate 11 through the connecting rod 17 and the connecting plate 18. When the moving seat 5 approaches the oil tank body 1, the slide bar 7 descends and at the same time drives the lifting limit plate 11 to rise through the inclined guide plate 10, the connecting rod 17 and the connecting plate 18, and fits the outer surface of the oil tank body 1 to limit the other two sides; when disassembling, the moving seat 5 moves away, the slide bar 7 rises, and synchronously drives the lifting limit plate 11 to descend to release the limit.

[0035] Principle of auxiliary structure: The fixed limit plate 22 on the upper surface of the oil tank base 2 provides a position reference for the oil tank body 1 when installing it, thereby improving the placement accuracy. The notch 23, the limit slide rail 24, the bearing seat 25 and the universal ball 26 on the moving seat 5 constitute an auxiliary installation and disassembly structure. During disassembly, the moving seat 5 is opened, and the slide bar 7 rises to drive the bearing seat 25 and the universal ball 26 to rise and lift the oil tank body 1, which is convenient for pushing the disassembly, and at this time, the lifting limit plate 11 automatically descends. During installation, when the moving seat 5 approaches, the universal ball 26 lifts the oil tank body 1, and the slide bar 7 can push it to the center position. When the pressure plate 8 is pressed, the universal ball 26 descends to make the oil tank body 1 fall onto the oil tank base 2, automatically correcting the placement deviation. In addition, the connecting rod 17 is distributed in the upper and lower positions of the side wall of the inclined guide plate 10 to ensure that the inclined guide plate 10 is stably connected to the lifting limit plate 11. The clearance grooves 27 on both sides of the pressure plate 8 prevent the oil pipe from being pressed, and the pressure block 28 on the lower side enhances the pressing effect. The size design of the strip-shaped through hole 4 is adapted to the oil tank body 1 , which not only meets the moving space requirement of the moving seat 5 , but also ensures effective support and limitation of the oil tank body 1 .

[0036] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0037] Although 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. A hydraulic oil storage device for hydraulic equipment, comprising an oil tank body (1) and an oil tank base (2), wherein the oil tank body (1) has extension plates (3) on both sides, and the oil tank body (1) is mounted on the oil tank base (2), characterized in that: A strip-shaped through hole (4) is provided in the middle of the oil tank base (2), a movable seat (5) which is symmetrical and relatively movable is provided in the strip-shaped through hole (4), two vertical holes (6) are provided on the movable seat (5), a sliding rod (7) is slidably connected to each of the two vertical holes (6), and a pressing plate (8) is fixedly connected to the upper end of the sliding rod (7); An inclined slideway (9) is provided at mutually adjacent positions on the lower half of the slide rod (7), an inclined guide plate (10) is provided on the lower side of the oil tank base (2), and the inclined slideway (9) is slidably connected to the inclined guide plate (10); A lifting limit plate (11) is provided on the oil tank base (2), and the lifting limit plate (11) can be fitted on the outer surface of the oil tank body (1).

2. The hydraulic oil storage device for hydraulic equipment according to claim 1, characterized in that: A bearing seat (12) is fixedly connected to the lower side of the oil tank base (2); a screw rod (13) is rotatably connected to the bearing seat (12); a driving member (14) is fixedly connected to one end of the screw rod (13); a screw rod sleeve (15) is connected to the screw rod (13); the screw rod sleeve (15) is fixedly connected to the movable seat (5); and the movable seat (5) is slidably connected to the strip-shaped through hole (4).

3. The hydraulic oil storage device for hydraulic equipment according to claim 1, characterized in that: The inclined guide plate (10) is fixedly connected to the lower side of the oil tank base (2).

4. The hydraulic oil storage device for hydraulic equipment according to claim 2, characterized in that: A support frame (16) is fixedly connected to the lower side of the oil tank base (2); the support frame (16) is a U-shaped structural plate, and one end of the screw rod (13) passes through one of the support frames (16); the drive member (14) is fixedly connected to the support frame (16).

5. The hydraulic oil storage device for hydraulic equipment according to claim 4, characterized in that: Connecting rods (17) are fixedly connected to both sides of the inclined guide plate (10), connecting plates (18) are fixedly connected to the ends of the connecting rods (17), and the connecting plates (18) are fixedly connected to the lifting limit plates (11); The oil tank base (2) is provided with a strip-shaped step hole (19); the upper end of the lifting limit plate (11) includes a first limit strip (20); the middle part of the lifting limit plate (11) includes a second limit strip (21); when the lifting limit plate (11) is located at an upper working position, the upper surface of the second limit strip (21) is in contact with the lower surface of the oil tank base (2); when the lifting limit plate (11) is located at a lower working position, the first limit strip (20) is located in the strip-shaped step hole (19).

6. The hydraulic oil storage device for hydraulic equipment according to claim 5, characterized in that: A fixed limit plate (22) is fixedly connected to the upper surface of the oil tank base (2), and the fixed limit plate (22) is aligned with one set of lifting limit plates (11).

7. The hydraulic oil storage device for hydraulic equipment according to claim 5 or 6, characterized in that: The movable seat (5) is provided with a notch (23) communicating with the vertical hole (6); one side of the slide rod (7) is fixedly connected to a limit slide rail (24); a bearing seat (25) is slidably connected to the limit slide rail (24); a universal ball (26) is fixedly connected to the upper surface of the bearing seat (25); and the bearing seat (25) is located in the strip-shaped through hole (4).

8. The hydraulic oil storage device for hydraulic equipment according to claim 7, characterized in that: There are four connecting rods (17), which are respectively fixedly connected to the upper and lower positions of the side wall of the inclined guide plate (10); The inclined guide plate (10) is a rectangular plate, and the two slide bars (7) are respectively connected to the edges of the inclined guide plate (10) through inclined slideways (9), and the slide bars (7) are located between the upper and lower connecting bars (17).

9. The hydraulic oil storage device for hydraulic equipment according to claim 1, characterized in that: The two sides of the pressing plate (8) are provided with clearance grooves (27), and the lower side of the pressing plate (8) is fixedly connected with a pressing block (28).

10. The hydraulic oil storage device for hydraulic equipment according to claim 1, characterized in that: The width dimension of the strip-shaped through hole (4) is smaller than the width dimension of the oil tank body (1), and the length dimension of the strip-shaped through hole (4) is larger than the length dimension of the oil tank body (1).

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