Hydraulic oil tank with buffering function

Abstract

The utility model discloses a hydraulic oil tank with a buffering function, which relates to the technical field of oil tanks and comprises a tank body, an oil filling port, an oil outlet and an oil return port. The box is used for containing hydraulic oil. The oil filling port is connected with the tank and used for injecting hydraulic oil into the tank. The oil outlet is connected with the box body and used for discharging hydraulic oil in the box body. The oil return opening is connected with the box body and used for enabling hydraulic oil to flow back to the box body. The oil filling port comprises a first section, a bent transition section and a second section. The first section is horizontally arranged. The first end of the first section is connected with the first wall face of the box body, the second end of the first section is connected with the first end of the bent transition section, the second end of the bent transition section is connected with the first end of the second section, and the second end of the second section is used for injecting hydraulic oil. The second section is vertically or obliquely arranged. Compared with the prior art, hydraulic oil in the oil filling port is buffered, and bubbles in the oil tank can be reduced.

Description

Technical Field

[0001] This utility model relates to the field of oil tank technology, and in particular to a hydraulic oil tank with a buffer function. Background Technology

[0002] A dump truck is a transport vehicle that unloads goods itself using hydraulic or mechanical lifting; it is also known as a tipper truck or self-unloading transport vehicle. Its core function is to efficiently transport bulk materials (such as sand, gravel, ore, and garbage) and has a rapid unloading capability. The hydraulic tank is a key structure of a dump truck, used to supply hydraulic fluid to the truck's cylinders.

[0003] In the prior art, the filler port of the hydraulic oil tank is generally set vertically on its upper surface. The hydraulic oil is poured into the hydraulic oil tank quickly in a vertical falling manner, resulting in a large number of air bubbles in the oil. Utility Model Content

[0004] The purpose of this invention is to provide a hydraulic oil tank with a buffer function to solve the problems existing in the above-mentioned related technologies and reduce air bubbles in the oil.

[0005] To achieve the above objectives, this utility model provides the following solution:

[0006] This utility model discloses a hydraulic oil tank with a buffer function, comprising:

[0007] The housing is used to hold hydraulic oil;

[0008] A filler port, connected to the housing, is used to inject hydraulic oil into the housing;

[0009] An oil outlet is connected to the housing and is used to discharge hydraulic oil from the housing.

[0010] The return port is connected to the housing and is used to allow hydraulic oil to flow back to the housing;

[0011] The refueling port includes section one, a curved transition section, and section two; section one is horizontally positioned.

[0012] The first end of section one is connected to the wall of the box, the second end of section one is connected to the first end of the bending transition section, the second end of the bending transition section is connected to the first end of section two, and the second end of section two is used to inject hydraulic oil; section two is set vertically or at an angle.

[0013] Preferably, the housing includes a housing shell, an inner lining ring one, and an inner lining ring two. The housing shell has mounting holes at positions corresponding to the filler port, the oil outlet, and the oil return port. The inner lining ring one is fixedly installed in each mounting hole, and the inner lining ring two is fixedly installed in the inner lining ring one. The inner lining ring two has internal threads for threaded connection with the filler port, the oil outlet, or the oil return port. The housing shell and the inner lining ring one are made of plastic, while the inner lining ring two is made of metal.

[0014] Preferably, the inner lining ring includes a cylindrical section and an end plate; the outer surface of the cylindrical section is provided with a plurality of annular grooves concentric with the cylindrical section, and the annular grooves are sealed to the inner wall of the mounting hole by a snap-fit; the end plate is limited and abuts against the inner wall of the housing.

[0015] Preferably, the side of the end plate is provided with several grooves, and part of the shell is embedded in the grooves.

[0016] Preferably, the outer surface of the inner lining ring two is provided with a plurality of embedding positions, and a portion of the inner lining ring one is embedded in the embedding positions.

[0017] Preferably, the hydraulic oil tank with buffer function further includes a return oil reversing sleeve and a magnetic attraction assembly; the return oil reversing sleeve includes a cylinder and a flange, the first end of the cylinder is open, and the second end of the cylinder is closed; the flange is connected to the outside of the first end of the cylinder and clamped between the end plate and the return oil port; the cylinder is provided with a plurality of radial holes; the return oil port has a curved portion, and the magnetic attraction assembly is movably disposed between the second end of the cylinder and the curved portion.

[0018] Preferably, the filling port, the oil outlet, and the oil return port have the same structure.

[0019] Preferably, at least one of the first section, the curved transition section, and the second section has a variable cross-section section; the cross-sectional area of ​​the variable cross-section section gradually decreases along the injection direction of the hydraulic oil in the filler port.

[0020] Preferably, the oil outlet and the oil return outlet are connected to the second wall of the housing; the housing is square, and the first wall and the second wall are directly opposite each other.

[0021] Preferably, the oil filling port and the oil return port are arranged opposite each other, and the oil return port and the oil outlet are arranged diagonally opposite each other on the second wall surface.

[0022] This utility model achieves the following technical advantages compared to related technologies:

[0023] In this invention, during the process of injecting hydraulic oil into the tank through the filling port, the oil changes from a vertical or inclined drop to a horizontal drop after passing through the curved transition section, which makes the oil have a smaller falling speed and thus reduces the air bubbles generated by the falling impact.

[0024] During the overflow of oil at the filler neck, the curved transition section plays a certain role in buffering and absorbing energy, dissipating the impact kinetic energy of the oil, thereby reducing the final overflow height and minimizing oil loss.

[0025] In the preferred embodiment of this utility model, when the overflowing oil at the filler port passes through the variable cross-section section, the cross-sectional area of ​​the oil gradually increases, giving the oil a partial radial velocity. The kinetic energy corresponding to these radial velocities is partially consumed through the impact on the inner wall of the variable cross-section section and the mutual impact of the oil, thereby reducing the final overflow height and reducing oil loss.

[0026] In a preferred embodiment of this invention, the hydraulic oil tank with buffering function further includes a return oil reversing sleeve and a magnetic suction assembly. The magnetic suction assembly can attract ferromagnetic substances in the returning hydraulic oil, preventing them from participating in subsequent circulation and thus avoiding their impact on the operation of the oil pump and hydraulic actuators. The magnetic suction assembly is long enough to prevent it from passing through the bends in the return oil port, thus eliminating the need for positioning the magnetic suction assembly and reducing assembly costs. The second end of the return oil reversing sleeve is closed, allowing the returning hydraulic oil to flow out of the return oil reversing sleeve only along the radial hole. The hydraulic oil that folds back at the second end of the return oil reversing sleeve merges with the hydraulic oil flowing into the return oil reversing sleeve, their flow directions being opposite, thus providing a buffering effect to some extent. Attached Figure Description

[0027] To more clearly illustrate the technical solutions in the embodiments of this utility model or related technologies, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0028] Figure 1 This is a schematic diagram of a hydraulic oil tank with a buffer function according to an embodiment of the present invention;

[0029] Figure 2 for Figure 1 A schematic diagram of the central structure from a top-down perspective;

[0030] Figure 3 for Figure 2 A cross-sectional view of the middle structure along the AA direction;

[0031] Figure 4 A schematic diagram of the combined structure of inner lining ring one and inner lining ring two;

[0032] Figure 5 This is a schematic diagram of the magnetic attraction component;

[0033] Figure 6 This is a schematic diagram of the return oil reversing sleeve;

[0034] Figure 7 This is a schematic diagram of the inner lining ring.

[0035] In the diagram: 1-box body; 2-fill port; 3-oil outlet; 4-oil return port; 5-oil return reversing sleeve; 6-magnetic suction assembly; 7-nut;

[0036] 11-Shell; 12-Inner lining ring one; 13-Inner lining ring two; 14-Wall surface one; 15-Wall surface two; 16-Wave-proof protrusion;

[0037] 21-Section 1; 22-Bending transition section; 23-Section 2; 24-Cover body;

[0038] 121 - Cylindrical section; 122 - End plate; 123 - Annular groove; 124 - Groove;

[0039] 131 - Embedding bit;

[0040] 51-Cylinder body; 52-Side flange; 53-Radial hole;

[0041] 61-Magnetic column; 62-Perforated plate. Detailed Implementation

[0042] 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.

[0043] The purpose of this invention is to provide a hydraulic oil tank with a buffer function to solve the problems existing in the above-mentioned related technologies and reduce air bubbles in the oil.

[0044] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0045] Reference Figures 1 to 7 This embodiment provides a hydraulic oil tank with a buffer function, including a tank body 1, an oil filling port 2, an oil outlet 3, and an oil return port 4.

[0046] The housing 1 is used to hold hydraulic oil. The filler port 2 is connected to the housing 1 and is used to fill the housing 1 with hydraulic oil. The outlet port 3 is connected to the housing 1 and is used to discharge the hydraulic oil from the housing 1. The return port 4 is connected to the housing 1 and is used to allow the hydraulic oil to flow back to the housing 1.

[0047] The refueling port 2 includes section 1 (21), a curved transition section (22), and section 2 (23). Section 1 (21) is horizontally positioned.

[0048] The first end of section 1 21 is connected to the wall 14 of the housing 1, the second end of section 1 21 is connected to the first end of the bending transition section 22, the second end of the bending transition section 22 is connected to the first end of section 23, and the second end of section 23 is used for injecting hydraulic oil. Section 23 is set vertically or at an angle.

[0049] The working principle of the hydraulic oil tank with buffer function in this embodiment is as follows:

[0050] Hydraulic oil is injected into the housing 1 through filler port 2. When the hydraulic actuator needs oil, the hydraulic oil flows out of the tank through outlet port 3 under the suction of the oil pump and enters the hydraulic cylinder and other hydraulic actuators. During the return oil process, the return oil from the hydraulic actuator flows back into the housing 1 through return port 4. When the hydraulic actuator is working, filler port 2 also serves as an air intake and exhaust port to balance the pressure inside and outside the housing 1.

[0051] During the process of injecting hydraulic oil into the tank 1 through the filling port 2, after the oil passes through the curved transition section 22, the oil changes from falling vertically or at an angle to falling horizontally, so that the oil has a smaller falling speed, thereby reducing the bubbles generated by the falling impact.

[0052] Furthermore, during the overflow of oil at filler port 2, the curved transition section 22 plays a certain role in buffering and consuming energy, thereby reducing the impact kinetic energy of the oil, thus reducing the final overflow height and minimizing oil loss.

[0053] As a possible example, in this embodiment, the housing 1 includes a housing shell 11, an inner lining ring 12, and an inner lining ring 13. The housing shell 11 has mounting holes at positions corresponding to the oil filler port 2, oil outlet port 3, and oil return port 4. The inner lining ring 12 is fixedly installed in each mounting hole, and the inner lining ring 13 is fixedly installed inside the inner lining ring 12. The inner lining ring 13 has internal threads for threaded connection with the oil filler port 2, oil outlet port 3, or oil return port 4.

[0054] A universal mounting structure is provided here, which can be used to install any one of the filler neck 2, oil outlet 3, and oil return neck 4. Due to its universal design, the posture of the housing 1 and the installation positions of the filler neck 2, oil outlet 3, and oil return neck 4 can be adjusted according to the installation space of the actual vehicle model during actual use. The housing shell 11 and the inner lining ring 12 are made of plastic, while the inner lining ring 13 is made of metal.

[0055] The casing 11 and the inner lining ring 12 are made of plastic to leverage the advantages of plastic molding and achieve a tight contact and seal between them. For example, after prefabricating the inner lining ring 12, it is placed into a blow molding mold of the casing 11 for blow molding, ensuring a tight fit between the casing 11 and the inner lining ring 12 after blow molding, thus preventing oil leakage at the mounting hole. This connection method offers high processing efficiency, low cost, and a tight fit.

[0056] The inner ring 13 is made of metal to give its internal threads a higher coefficient of friction than plastic, thus ensuring a tight fit with the external threads on the filler port 2, oil outlet 3, and oil return port 4. These external threads also mate with the nut 7, which has a sealing ring clamped between it and the outer end face of the inner ring 12 to further improve sealing.

[0057] As a possible example, in this embodiment, the inner lining ring 12 includes a cylindrical section 121 and an end plate 122. The outer surface of the cylindrical section 121 is provided with a plurality of annular grooves 123 concentric with the cylindrical section 121, and the annular grooves 123 are sealed to the inner wall of the mounting hole by a snap-fit. The end plate 122 is positioned and abuts against the inner wall of the housing 11.

[0058] During the molding process of the housing 11, liquid plastic flows into the annular groove 123 and solidifies, thereby sealing the annular groove 123 with the inner wall of the mounting hole through a snap-fit ​​mechanism, achieving axial positioning of the inner lining ring 12. The end plate 122 can unilaterally extrude the liquid plastic used to mold the housing 11, facilitating extrusion and bubble formation, and improving the tightness of the fit.

[0059] As a possible example, in this embodiment, the side of the end plate 122 is provided with a plurality of grooves 124, and part of the housing 11 is embedded in the grooves 124.

[0060] During the molding process of the housing 11, some liquid plastic flows into the groove 124 and solidifies under the pressure of the end plate 122, so that the groove 124 and the inner wall of the mounting hole are engaged in a snap-fit ​​manner to circumferentially limit the inner lining ring 12.

[0061] By limiting the axial and circumferential positions of the inner lining ring 12 as described above, a stable connection between the housing 11 and the inner lining ring 12 can be ensured, preventing oil leakage due to loose connection.

[0062] As a possible example, in this embodiment, the outer surface of the inner ring 13 is provided with a plurality of embedding positions 131, and part of the inner ring 12 is embedded in the embedding positions 131.

[0063] After the prefabricated inner lining ring 2 13 is placed into the injection mold of inner lining ring 1 12 for injection molding. Liquid plastic flows into the embedding position 131 and solidifies, thereby tightly connecting inner lining ring 1 12 and inner lining ring 2 13, completing the axial and circumferential positioning of inner lining ring 2 13.

[0064] It is understandable that the embedded part 131 here can be a through hole or a groove.

[0065] As a possible example, in this embodiment, the hydraulic oil tank with buffer function further includes a return oil reversing sleeve 5 and a magnetic suction assembly 6. The return oil reversing sleeve 5 includes a cylinder 51 and a flange 52. The first end of the cylinder 51 is open, and the second end of the cylinder 51 is closed. The flange 52 is connected to the outside of the first end of the cylinder 51 and clamped between the end plate 122 and the return oil port 4. The cylinder 51 is provided with a plurality of radial holes 53. The return oil port 4 has a curved portion, and the magnetic suction assembly 6 is movably disposed between the second end of the cylinder 51 and the curved portion.

[0066] Due to mechanical wear, the returned hydraulic oil usually contains ferromagnetic substances. The magnetic adsorption component 6 can attract the ferromagnetic substances in the returned hydraulic oil, preventing them from participating in subsequent circulation and thus avoiding their impact on the operation of the oil pump and hydraulic actuators.

[0067] The magnetic component 6 is long enough to prevent it from passing through the curved part of the oil return port 4, so there is no need to position the magnetic component 6, thus reducing assembly costs.

[0068] The second end of the return oil reversing sleeve 5 is closed, and the returning hydraulic oil can only flow out of the return oil reversing sleeve 5 along the radial hole 53. The hydraulic oil that turns back at the second end of the return oil reversing sleeve 5 merges with the hydraulic oil flowing into the return oil reversing sleeve 5, and their flow directions are opposite, which plays a buffering role to a certain extent.

[0069] For example, there are multiple radial holes 53, which are evenly distributed on both sides of the return oil reversing sleeve 5. On the one hand, they serve to divert the flow and reduce the impact of a single stream of hydraulic oil. On the other hand, after the hydraulic oil on both sides enters the housing 1, it flows counterclockwise and clockwise respectively and then merges. Their flow directions are opposite, which again serves as a buffer.

[0070] For example, the magnetic suction assembly 6 includes a magnetic suction post 61 and a perforated plate 62. The magnetic suction post 61 has an annular mounting groove, and the perforated plate 62 has a first hole and a second hole. The annular mounting groove mates with the first hole to achieve axial positioning of the magnetic suction post 61. The second hole allows hydraulic oil to pass through. The perforated plate 62 is assembled from several splicing units to facilitate the assembly of the magnetic suction post 61. The splicing unit can be a semi-circular plate, and the number of units is two.

[0071] As a possible example, in this embodiment, the oil inlet 2, oil outlet 3, and oil return outlet 4 have the same structure.

[0072] This design allows for interchangeability of the three structures: oil inlet 2, oil outlet 3, and oil return outlet 4, reducing the configuration cost of processing equipment and the configuration cost of spare parts for product maintenance.

[0073] For example, the end of the filler port 2 facing away from the tank body 1 is detachably fitted with a cover 24, so as to prevent external debris from entering the tank when the hydraulic system where the hydraulic oil tank is located stops working.

[0074] As a possible example, in this embodiment, at least one of section 1 21, bending transition section 22, and section 23 has a variable cross-section. The cross-sectional area of ​​the variable cross-section gradually decreases along the injection direction of the hydraulic oil in the filler port 2.

[0075] During the overflow process at filler port 2, as the oil passes through the variable cross-section section, the cross-sectional area of ​​the oil gradually increases, giving the oil a partial radial velocity. The kinetic energy corresponding to these radial velocities is partially consumed through the impact on the inner wall of the variable cross-section section and the mutual impact of the oil, thereby reducing the final overflow height and reducing oil loss.

[0076] Section 23 is preferably set vertically, and the variable cross-section section is preferably arranged in the bending transition section 22.

[0077] For example, the diameter of the large diameter end of the variable cross-section section is 80 mm, and the diameter of the small diameter end is 50 mm.

[0078] As a possible example, in this embodiment, the oil outlet 3 and the oil return port 4 are connected to the second wall 15 of the housing 1. The housing 1 is square, and the first wall 14 and the second wall 15 are directly opposite each other.

[0079] By adopting this face-to-face arrangement, all four walls between wall 14 and wall 15 can serve as the lower support surface, allowing the hydraulic oil tank with buffer function to be installed in both vertical and horizontal positions, thus adapting to the installation space of different vehicle models. It is understood that after adjusting the position, the orientation of the filler port 2, outlet port 3, and return port 4 can be adjusted.

[0080] As a possible example, in this embodiment, the oil filling port 2 and the oil return port 4 are arranged opposite each other, and the oil return port 4 and the oil outlet port 3 are arranged diagonally opposite each other on the wall surface 15.

[0081] By adopting this arrangement, both the oil filling port 2 and the oil return port 4 can be connected to the upper part of the housing 1 in both vertical and horizontal positions.

[0082] As a possible example, in this embodiment, the inner side of the housing 1 is provided with a wave-damping protrusion 16 for buffering the hydraulic oil inside the housing 1.

[0083] For example, there are two wave-blocking protrusions 16, which are positioned opposite each other and have a gap between them.

[0084] This utility model uses specific examples to illustrate its principles and implementation methods. The above description of the embodiments is only for the purpose of helping to understand the method and core idea of ​​this utility model. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the idea of ​​this utility model. In summary, the content of this specification should not be construed as a limitation of this utility model.

Claims

1. A hydraulic oil tank having a buffer function, characterized by comprising: The application relates to a hydraulic oil tank. The hydraulic oil tank comprises: a tank body for containing hydraulic oil; a filling port connected to the tank body for injecting hydraulic oil into the tank body; a discharge port connected to the tank body for discharging hydraulic oil from the tank body; a return port connected to the tank body for returning hydraulic oil to the tank body; wherein the filling port comprises a section one, a curved transition section and a section two; the section one is horizontally arranged; 2. The hydraulic oil tank having a buffer function according to claim 1, characterized by: a first end of the section one is connected to a wall surface one of the tank body, a second end of the section one is connected to a first end of the curved transition section, a second end of the curved transition section is connected to a first end of the section two, and a second end of the section two is used for injecting hydraulic oil; the section two is vertically or obliquely arranged.

3. The hydraulic oil tank having a buffer function according to claim 2, characterized by: The tank body comprises a tank shell, an inner lining ring one and an inner lining ring two; the tank shell is provided with mounting holes at positions corresponding to the filling port, the discharge port and the return port; the inner lining ring one is fixedly arranged in the mounting holes; and the inner lining ring two is fixedly arranged in the inner lining ring one; the inner lining ring two is provided with internal threads for being threadedly connected to the filling port, the discharge port or the return port; the tank shell and the inner lining ring one are made of plastic material; and the inner lining ring two is made of metal material.

4. The hydraulic oil tank having a cushion function according to claim 3, characterized by: The inner lining ring one comprises a cylindrical section and an end plate; the outer surface of the cylindrical section is provided with a plurality of ring grooves concentric with the cylindrical section; the ring grooves are sealingly matched with the inner walls of the mounting holes in a clamping mode; and the end plate is limitedly abutted against the inner wall of the tank shell.

5. The hydraulic oil tank having a buffer function according to claim 2, characterized by: The side surface of the end plate is provided with a plurality of grooves, and part of the tank shell is embedded in the grooves.

6. The hydraulic oil tank having a buffer function according to claim 3, characterized by: The outer side surface of the inner lining ring two is provided with a plurality of embedding positions, and part of the inner lining ring one is embedded in the embedding positions.

7. The hydraulic oil tank having a buffer function according to claim 1, characterized by: The hydraulic oil tank further comprises a return oil direction-changing sleeve and a magnetic attraction assembly; the return oil direction-changing sleeve comprises a cylinder body and a retaining edge; the first end of the cylinder body is open, and the second end of the cylinder body is closed; the retaining edge is connected to the outside of the first end of the cylinder body and is clamped between the end plate and the return port; the cylinder body is provided with a plurality of radial holes; the return port has a curved portion; and the magnetic attraction assembly is movably arranged between the second end of the cylinder body and the curved portion.

8. The hydraulic oil tank having a buffer function according to claim 1, characterized by: The filling port, the discharge port and the return port have the same structure.

9. The hydraulic oil tank having a buffer function according to claim 1, characterized by: At least one of the section one, the curved transition section and the section two has a variable cross-section section; along the injection direction of the hydraulic oil in the filling port, the cross-sectional area of the variable cross-section section gradually decreases.

10. The hydraulic oil tank having a buffer function according to claim 9, characterized by: The discharge port and the return port are connected to a wall surface two of the tank body; the tank body is square-shaped; and the wall surface one and the wall surface two are located opposite to each other. The filling port and the return port are oppositely arranged, and the return port and the discharge port are diagonally arranged on the wall surface two.

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