Hydraulic pump station and engineering machine

Abstract

This utility model discloses a hydraulic pump station and engineering machinery, including a support frame, a hydraulic oil tank mounted on the support frame, and a motor pump unit connected to the bottom surface of the hydraulic oil tank. The support frame includes a bottom support structure, a vertical support structure mounted on the bottom support structure, and a top support structure mounted on the vertical support structure. The hydraulic oil tank is mounted on the top support structure, and the motor pump unit is mounted on the bottom support structure. The vertical support structure includes a fixed support member and a detachable support member. The two ends of the fixed support member are fixedly connected to the bottom support structure and the top support structure, respectively. The two ends of the detachable support member are detachably connected to the bottom support structure and the top support structure, respectively. The support frame is used to create a space for replacing or maintaining the motor pump unit on the side after the detachable support member is removed. The hydraulic pump station of this utility model can avoid the difficulty of hydraulic pump suction caused by excessively long suction pipes. It has a compact structure, and the removal of the detachable support member can provide a larger operating space, thereby improving maintenance efficiency.

Description

Technical Field

[0001] This utility model relates to the field of hydraulic equipment technology, and in particular, to a hydraulic pump station. Furthermore, this utility model also relates to an engineering machine including the aforementioned hydraulic pump station. Background Technology

[0002] Chinese patent CN219296428U describes a hydraulic pump station in which the hydraulic oil tank and hydraulic pump are respectively arranged at the left and right rear of the equipment. The hydraulic pump and hydraulic oil tank are connected by a suction hose (or steel pipe), adopting a separate design. This arrangement makes the layout of the hydraulic pump and oil tank more flexible and facilitates the installation of a suction filter at the oil tank suction port. However, the length of the suction pipe will make it difficult for the hydraulic pump to draw oil, thereby reducing the service life of the oil pump; since the equipment needs to be hoisted separately during disassembly, assembly and transportation, there is a high risk of contamination during secondary assembly; in addition, this separate design of the hydraulic pump station requires a large installation space.

[0003] For ease of maintenance, existing integrated hydraulic pump stations typically mount the hydraulic pump on the side of the hydraulic oil tank, as shown in Chinese patent CN219587880U. This type of hydraulic pump station has a relatively long axial length and requires a large installation space. Utility Model Content

[0004] This utility model provides a hydraulic pump station and engineering machinery to solve the technical problems of existing split hydraulic pump stations, which require separate hoisting during disassembly and transportation, pose a high risk of contamination during secondary assembly, have excessively long oil suction pipes that make it difficult for the hydraulic pump to draw oil, and require a large installation space.

[0005] According to one aspect of this utility model, a hydraulic pump station is provided, including a support frame, a hydraulic oil tank disposed on the support frame, and a motor pump unit communicating with the bottom surface of the hydraulic oil tank. The support frame includes a bottom support structure, a vertical support structure disposed on the bottom support structure, and a top support structure disposed on the vertical support structure. The hydraulic oil tank is disposed on the top support structure, and the motor pump unit is disposed on the bottom support structure. The vertical support structure includes a fixed support member and a detachable support member. The two ends of the fixed support member are fixedly connected to the bottom support structure and the top support structure, respectively. The two ends of the detachable support member are detachably connected to the bottom support structure and the top support structure, respectively. The support frame is used to form a space for replacing or maintaining the motor pump unit on the side after the detachable support member is removed.

[0006] Furthermore, the fixed support member is a stiffener plate, and the stiffener plate has an opening facing the detachable support member.

[0007] Furthermore, protrusions are provided on both sides of the opening of the rib plate, and the detachable support is provided with a slot that matches the protrusion. The detachable support is connected to the protrusion by fasteners.

[0008] Furthermore, reinforcing ribs are provided between the fixed support member and the top support structure and / or between the fixed support member and the bottom support structure.

[0009] Furthermore, the hydraulic oil tank includes an oil tank body, and a shock absorber is provided on the bottom plate of the oil tank body for connecting the motor pump unit. A transition pipe for connecting the shock absorber is provided inside the oil tank body, and an oil suction filter is provided on the transition pipe such that the distance between the oil suction filter and the bottom plate of the oil tank body is ≥50mm.

[0010] Furthermore, a magnetic suction element is provided on the bottom plate of the oil tank body, and the magnetic suction element is located below the oil inlet of the oil suction filter.

[0011] Furthermore, the oil tank body is equipped with an oil return filter, an air filter, and a liquid level and temperature gauge.

[0012] Furthermore, the oil tank body is provided with a cleaning port and an oil drain port.

[0013] Furthermore, lifting lugs are respectively provided on the bottom support structure, the hydraulic oil tank, and the motor pump unit.

[0014] According to another aspect of the present invention, an engineering machine is also provided, which includes the above-described hydraulic pump station.

[0015] This utility model has the following beneficial effects:

[0016] This utility model discloses a hydraulic pump station where the hydraulic oil tank is mounted on a top support structure, and the motor pump unit is positioned below the hydraulic oil tank, with the motor pump unit connected to the bottom of the hydraulic oil tank. This vertical arrangement, with the hydraulic oil tank on top and the motor pump unit below, saves space by utilizing a bottom suction structure design. This not only avoids difficulties in oil suction caused by excessively long suction pipes, thus extending the pump's service life, but also makes the hydraulic pump station more compact. Both the vertical support structure and the motor pump unit are supported by the bottom support structure, allowing for overall hoisting of the hydraulic pump station during disassembly, assembly, and transportation, avoiding the risk of contamination from secondary assembly. The detachable support components of the vertical support structure enhance the flexibility of the frame structure. When the motor pump unit needs replacement or maintenance, the detachable support components can be removed, providing more operating space, greatly facilitating maintenance work and improving maintenance efficiency.

[0017] In addition to the objectives, features, and advantages described above, this utility model has other objectives, features, and advantages. The present utility model will now be described in further detail with reference to the figures. Attached Figure Description

[0018] The accompanying drawings, which form part of this application, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an undue limitation of the present invention. In the drawings:

[0019] Figure 1 This is a schematic diagram of the hydraulic pump station according to a preferred embodiment of the present invention;

[0020] Figure 2 This is a schematic diagram of the support frame according to a preferred embodiment of the present invention;

[0021] Figure 3 This is a schematic diagram of the vertical support structure of a preferred embodiment of the present invention;

[0022] Figure 4 yes Figure 3 A magnified view of area A shown below;

[0023] Figure 5 This is a schematic diagram of the hydraulic oil tank according to a preferred embodiment of the present invention;

[0024] Figure 6 This is a schematic diagram of the transition tube according to a preferred embodiment of the present invention.

[0025] Legend:

[0026] 1. Support frame; 11. Bottom support structure; 111. Base; 112. Bottom beam; 12. Vertical support structure; 121. Fixed support component; 122. Detachable support component; 123. Bayonet; 124. Fastener; 125. Reinforcing rib; 13. Top support structure; 131. Boss; 132. Top beam; 2. Hydraulic oil tank; 21. Tank body; 22. Suction filter; 23. Transition pipe; 24. Magnetic suction component; 25. Return oil filter; 26. Air filter; 27. Liquid level and temperature gauge; 28. Cleaning port; 29. ​​Oil drain port; 3. Motor pump set; 4. Vibration damper; 5. Lifting lug; 6. Gear pump suction port. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0028] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, and back), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.

[0029] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, features defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or," "or," and "and / or" throughout the text implies three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied. Furthermore, the technical solutions of various embodiments can be combined, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0030] To better understand the above technical solution, the following detailed explanation is provided in conjunction with the accompanying drawings.

[0031] Please refer to the following: Figures 1 to 6 The hydraulic pump station of this embodiment includes a support frame 1, a hydraulic oil tank 2 mounted on the support frame 1, and a motor pump unit 3 connected to the bottom surface of the hydraulic oil tank 2. The support frame 1 includes a bottom support structure 11, a vertical support structure 12 mounted on the bottom support structure 11, and a top support structure 13 mounted on the vertical support structure 12. The hydraulic oil tank 2 is mounted on the top support structure 13, and the motor pump unit 3 is mounted on the bottom support structure 11. The vertical support structure 12 includes a fixed support member 121 and a detachable support member 122. The two ends of the fixed support member 121 are fixedly connected to the bottom support structure 11 and the top support structure 13, respectively. The two ends of the detachable support member 122 are detachably connected to the bottom support structure 11 and the top support structure 13, respectively. The support frame 1 is used to form a space for replacing or maintaining the motor pump unit 3 on the side after the detachable support member 122 is removed.

[0032] In this embodiment, the hydraulic pump station uses the existing technology of the motor pump unit 3, which will not be described in detail here. The hydraulic oil tank 2 is installed on the top support structure 13, and the motor pump unit 3 is placed below the hydraulic oil tank 2. The motor pump unit 3 is connected to the bottom surface of the hydraulic oil tank 2. The vertical arrangement of the hydraulic oil tank 2 on top and the motor pump unit 3 on the bottom saves space for laying the suction pipe through the bottom suction structure design. This not only avoids the difficulty of hydraulic pump suction caused by excessively long suction pipes, thereby extending the service life of the oil pump, but also makes the hydraulic pump station more compact. The vertical support structure 12 and the motor pump unit 3 are both supported by the bottom support structure 11. During disassembly, assembly and transportation, the hydraulic pump station can be hoisted as a whole, avoiding the risk of contamination caused by secondary assembly. The detachable support component 122 of the vertical support structure 12 can improve the flexibility of the frame structure. When the motor pump unit 3 needs to be replaced or maintained, the detachable support component 122 can be removed, which can provide more operating space, greatly facilitate maintenance work and improve maintenance efficiency. Optionally, the bottom support structure 11 includes a base 111, with the vertical support structure 12 and the motor-pump unit 3 all mounted on the base 111. This design is simple and easy to assemble and disassemble. Optionally, the bottom support structure 11 also includes bottom beams 112 arranged on the base 111. The motor-pump unit 3 and / or the vertical support structure 12 are mounted on the bottom beams 112. The multiple bottom beams 112 spaced apart enhance the rigidity of the bottom support structure 11, thereby improving its stability. Optionally, the bottom beams 112 are arranged laterally and / or longitudinally. Optionally, the top support structure 13 includes multiple spaced top beams 132, which are arranged laterally and / or longitudinally. Optionally, the top beams 132 and bottom beams 112 are made of angle steel, possessing high strength and high bending resistance, effectively supporting the hydraulic oil tank 2 during equipment operation.

[0033] like Figure 3 As shown, in this embodiment, the fixed support 121 is a stiffening plate with an opening facing the detachable support 122. The stiffening plate is C-shaped, with two spaced-apart bottom beams 112 spanning the lower side of the opening and two spaced-apart top beams 132 spanning the upper side of the opening. This allows for support of the top support structure 13 when the detachable support 122 is removed, thus ensuring the stability of the hydraulic tank 2. The opening structure not only provides clearance for the installation of the motor pump unit 3, but also avoids the motor pump unit... 3. The interference with the stiffening plate can also reduce the overall weight of the fixed support 121, thereby reducing the overall weight of the hydraulic pump station. When the motor pump unit 3 needs to be replaced, the detachable support 122 can be removed, and the motor pump unit 3 can be moved laterally from the opening side of the stiffening plate. Compared with moving it along the axial direction of the motor pump unit 3, the moving distance is smaller, which can reduce the difficulty of disassembling and assembling the motor pump unit 3 and improve the disassembly and assembly efficiency. In addition, the stiffening plate can also cover both ends of the support frame 1, thereby protecting the connection between the motor pump unit 3 and the hydraulic oil tank 2.

[0034] like Figure 3 and Figure 4 As shown, in this embodiment, protrusions 131 are respectively provided on both sides of the opening of the stiffening plate. A latch 123 adapted to the protrusions 131 is provided on the detachable support member 122. The detachable support member 122 and the protrusions 131 are connected by fasteners 124. The protrusion 131 on the lower side of the opening of the stiffening plate is fixedly connected to the bottom beam 112, and the protrusion 131 on the upper side of the opening of the stiffening plate is fixedly connected to the top beam 132. The latch 123 at the lower end of the detachable support member 122 simultaneously abuts against the protrusions 131 and the bottom beam 112, and the latch 123 at the upper end of the detachable support member 122 simultaneously abuts against the protrusions 131 and the top beam 132, which can further enhance the support stability of the support frame 1. Optionally, the fastener 124 is a screw or bolt.

[0035] like Figure 3 As shown, in this embodiment, reinforcing ribs 125 are arranged between the fixed support member 121 and the top support structure 13 and / or between the fixed support member 121 and the bottom support structure 11. The reinforcing ribs 125 can improve the rigidity of the support frame 1, thereby improving the stability of the hydraulic oil tank 2.

[0036] like Figure 5 and Figure 6 As shown, in this embodiment, the hydraulic oil tank 2 includes an oil tank body 21. A shock absorber 4 for connecting the motor pump unit 3 is arranged on the bottom plate of the oil tank body 21. A transition pipe 23 for connecting the shock absorber 4 is arranged inside the oil tank body 21. An oil suction filter 22 is arranged on the transition pipe 23, such that the distance between the oil suction filter 22 and the bottom plate of the oil tank body 21 is ≥50mm. The motor pump unit 3 directly draws oil from the bottom of the oil tank body 21 through the shock absorber 4. The shock absorber 4 can absorb the impact and vibration generated during the operation of the hydraulic pump station, ensuring smooth and efficient oil suction. The transition pipe 23 is a bent pipe, and the transition pipe 23 serves as... The connection and installation interface of the suction filter 22 determines the position height of the suction filter 22 relative to the bottom plate of the oil tank body 21. When the position height of the suction filter 22 relative to the bottom plate of the oil tank body 21 is less than 50mm, the suction filter 22 will suck in more impurities deposited on the bottom plate of the oil tank body 21, causing the suction filter 22 to need to be cleaned or replaced frequently. Therefore, keeping the position height of the suction filter 22 relative to the bottom plate of the oil tank body 21 at 50mm or more can effectively extend the service life of the suction filter 22 and reduce the frequency of cleaning or replacement of the suction filter 22.

[0037] like Figure 6As shown, in this embodiment, a magnetic attractor 24 is provided on the bottom plate of the oil tank body 21. The magnetic attractor 24 is located below the oil inlet of the suction filter 22. The hydraulic system's drained oil returns to the oil tank body 21 through the drain pipe. The magnetic attractor 24 at the bottom of the oil tank body 21 will concentrate and attract iron filings contained in the hydraulic oil from the outlet of the return filter 25 and the outlet of the drain pipe to the bottom of the oil tank body 21. This prevents the iron filings deposited on the bottom plate of the oil tank body 21 from being sucked in by the suction filter 22, ensuring the purity of the oil and preventing iron filings from entering the hydraulic valve assembly and cylinder, thereby extending the service life of the hydraulic system and ensuring its stable operation. Optionally, the magnetic attractor 24 is a magnet.

[0038] like Figure 5 and Figure 6 As shown, in this embodiment, the oil tank body 21 is equipped with a return oil filter 25, an air filter 26, and a liquid level and temperature gauge 27. Two return oil filters 25 are installed on the top of the oil tank body 21 to keep the return oil clean through the hydraulic filter valve assembly, thereby extending the service life of the hydraulic system. Three air filters 26 are installed on the top of the oil tank body 21 to prevent external dust and particles from entering the oil tank body 21, thereby reducing the load on the suction filter 22 and extending the working cycle of the suction filter 22. One liquid level and temperature gauge 27 is installed on the side of the oil tank body 21 for easy visual observation of the oil level and temperature inside the oil tank body 21 by the operator. One liquid level and temperature gauge 27 is installed on the top of the oil tank body 21 to monitor the oil level and temperature inside the oil tank body 21 through a sensor and transmit the monitored data to the control room. It can be understood that the number of return oil filters 25, air filters 26, and liquid level and temperature gauges 27 can be adjusted according to actual usage requirements.

[0039] like Figure 5 and Figure 6 As shown in this embodiment, the oil tank body 21 is provided with a cleaning port 28 and an oil drain port 29. When the hydraulic pump station is maintained, the hydraulic oil in the oil tank body 21 can be completely drained through the oil drain port 29, and the oil tank body 21 can be cleaned, maintained and repaired by opening the cleaning port 28.

[0040] Optionally, the oil tank body 21 is provided with a gear pump suction port 6, and the gear pump is connected to the oil tank body 21 through the gear pump suction port 6. Since the gear pump has a simple structure and strong dirt resistance, the suction filter 22 is not required.

[0041] like Figure 1 and Figure 5As shown, in this embodiment, lifting lugs 5 are respectively provided on the bottom support structure 11, the hydraulic oil tank 2 and the motor pump unit 3. When the hydraulic pump station is disassembled and assembled as a whole, the lifting lugs 5 on the base 111 are used for hoisting; when the hydraulic oil tank 2 needs to be disassembled and assembled, the lifting lugs 5 on the oil tank body 21 are used for hoisting; when the motor pump unit 3 needs to be disassembled and assembled, the lifting lugs 5 on the motor pump unit 3 are used for hoisting.

[0042] In this embodiment, the hydraulic pump station adopts a vertical arrangement with the hydraulic oil tank 2 on top and the motor pump unit 3 on the bottom. The motor pump unit 3 draws oil directly from the bottom of the oil tank body 21 through the shock absorber 4. The shock absorber 4 can absorb the impact and vibration generated during the operation of the hydraulic pump station, ensuring smooth and efficient oil suction, and has a compact structure. The oil tank body 21 has a built-in suction filter 22, which forms a synergistic filtration mechanism with the return oil filter 25. The magnetic suction component 24 adsorbs iron filings in the oil tank body 21, which can effectively improve the cleanliness of the oil, thereby extending the service life of the hydraulic system and ensuring the stable operation of the hydraulic system. The fixed support component 121 of the closed frame support frame 1 can effectively support the hydraulic oil tank 2. At the same time, the side detachable support component 122 provides more operating space when maintaining or replacing the hydraulic oil pump, which can improve maintenance efficiency.

[0043] An engineering machine includes the aforementioned hydraulic pump station. The hydraulic oil tank 2 of the hydraulic pump station is mounted on a top support structure 13. The motor-pump unit 3 is positioned below the hydraulic oil tank 2, and is connected to the bottom surface of the hydraulic oil tank 2. This vertical arrangement, with the hydraulic oil tank 2 on top and the motor-pump unit 3 on the bottom, results in a compact structure. The motor-pump unit 3 draws oil directly from the bottom of the hydraulic oil tank 2 via a shock absorber 4, significantly reducing the risk of the motor-pump unit 3 sucking up air, thereby improving the equipment's climbing ability. The suction filter 22 is completely installed inside the oil tank body 21, and is connected to the return oil filter. The filter 25, in conjunction with the oil tank body 21, forms a dual filtration system, effectively reducing impurities inside the tank body 21. Simultaneously, the magnetic suction component 24 at the bottom of the tank body 21 attracts and collects iron filings from the return and drain oil, further ensuring oil cleanliness and extending equipment lifespan. The fixed support 121 is a stiffener with an opening facing the detachable support 122. The stiffener is C-shaped, with two spaced bottom beams 112 spanning the lower side of the opening and two spaced top beams 13 spanning the upper side of the opening. 2. The top support structure 13 can be supported when the detachable support component 122 is removed, thereby ensuring the stability of the hydraulic oil tank 2; the open structure not only provides clearance for the installation of the motor pump unit 3, avoiding interference between the motor pump unit 3 and the stiffening plate, but also reduces the overall weight of the fixed support component 121, thereby reducing the overall weight of the hydraulic pump station; when the motor pump unit 3 needs to be replaced, the detachable support component 122 can be removed, and the motor pump unit 3 can be moved laterally from the open side of the stiffening plate. Compared with moving it axially along the motor pump unit 3, the moving distance is smaller, which can reduce the disassembly... The difficulty of assembling the motor pump unit 3 is reduced, and the disassembly and assembly efficiency is improved. Both the vertical support structure 12 and the motor pump unit 3 are supported by the bottom support structure 11, which is mounted on the chassis. During disassembly, assembly, and transportation, the hydraulic pump station can be hoisted as a whole, avoiding the risk of contamination caused by secondary assembly. The detachable support component 122 of the vertical support structure 12 enhances the flexibility of the frame structure. When the motor pump unit 3 needs replacement or maintenance, the detachable support component 122 can be removed, providing more operating space, greatly facilitating maintenance work and improving maintenance efficiency. Optionally, the construction machinery can be an anchor bolt transfer machine, rock drill, crane, excavator, loader, bulldozer, or road roller.

[0044] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A hydraulic pump station, characterized in that, The system includes a support frame (1), a hydraulic oil tank (2) mounted on the support frame (1), and a motor pump assembly (3) connected to the bottom surface of the hydraulic oil tank (2). The support frame (1) includes a bottom support structure (11), a vertical support structure (12) mounted on the bottom support structure (11), and a top support structure (13) mounted on the vertical support structure (12). The hydraulic oil tank (2) is mounted on the top support structure (13), and the motor pump assembly (3) is mounted on the bottom support structure (11). The vertical support structure (12) includes a fixed support member (121) and a detachable support member (122). The two ends of the fixed support member (121) are fixedly connected to the bottom support structure (11) and the top support structure (13) respectively. The two ends of the detachable support member (122) are detachably connected to the bottom support structure (11) and the top support structure (13) respectively. The support frame (1) is used to form a space for the replacement or maintenance of the motor pump group (3) on the side after the detachable support member (122) is removed.

2. The hydraulic pump station according to claim 1, characterized in that, The fixed support (121) is a stiffener plate, and the stiffener plate has an opening facing the detachable support (122).

3. The hydraulic pump station according to claim 2, characterized in that, The rib plate has protrusions (131) on both sides of the opening, and the detachable support (122) has a snap-fit ​​(123) that matches the protrusions (131). The detachable support (122) and the protrusions (131) are connected by fasteners (124).

4. The hydraulic pump station according to any one of claims 1 to 3, characterized in that, Reinforcing ribs (125) are provided between the fixed support member (121) and the top support structure (13) and / or between the fixed support member (121) and the bottom support structure (11).

5. The hydraulic pump station according to claim 4, characterized in that, The hydraulic oil tank (2) includes an oil tank body (21). The bottom plate of the oil tank body (21) is provided with a shock absorber (4) for connecting the motor pump group (3). The oil tank body (21) is provided with a transition pipe (23) for connecting the shock absorber (4). The transition pipe (23) is provided with an oil suction filter (22) and the distance between the oil suction filter (22) and the bottom plate of the oil tank body (21) is ≥50mm.

6. The hydraulic pump station according to claim 5, characterized in that, A magnetic suction element (24) is provided on the bottom plate of the oil tank body (21), and the magnetic suction element (24) is located below the oil inlet of the oil suction filter (22).

7. The hydraulic pump station according to claim 5, characterized in that, The oil tank body (21) is equipped with an oil return filter (25), an air filter (26), and a liquid level and temperature gauge (27).

8. The hydraulic pump station according to claim 5, characterized in that, The oil tank body (21) is provided with a cleaning port (28) and an oil drain port (29).

9. The hydraulic pump station according to claim 1, characterized in that, Lifting lugs (5) are respectively provided on the bottom support structure (11), the hydraulic oil tank (2) and the motor pump group (3).

10. An engineering machinery, characterized in that, The hydraulic pump station includes any one of claims 1 to 9.

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