A flange-type, adjustable metal pipe assembly, hydraulic system, and engineering machinery

Abstract

The utility model discloses a flange-type, adjustable metal pipe assembly and hydraulic system, engineering machinery, including a locking flange, an adjustable metal pipe, a first locking piece, a mounting plate, and a second locking piece; the locking flange has a central through hole; one end of the adjustable metal pipe is inserted into the central through hole, and the other end is used to install the oil suction pipe; the first locking piece locks and fixes the position of the adjustable metal pipe after adjusting the direction in the locking flange; one end face of the mounting plate is sleeved on the central protruding annular cylinder of the locking flange, the mounting plate and the locking flange are fixed to the oil filter by fasteners, and the other end face of the mounting plate is fixed to the frame; the second locking piece is used to lock and fix the mounting plate and the locking flange. The utility model solves the problem of interference with the layout of spatial structural parts when the hydraulic system between the filter and the oil tank in the current bulldozer products is connected by pipe fittings.

Description

Technical Field

[0001] The utility model relates to a flange-type adjustable metal pipe assembly, belonging to the technical field of pipe connection for a hydraulic system between a filter and an oil tank. Background Art

[0002] At present, the connection with the oil port of the oil filter in the hydraulic system of engineering machinery is usually achieved by drilling an internal threaded oil port on it, and then connecting it to the oil tank and the filter with a hose assembly after installing a transition joint to realize the transmission of the oil medium. For hydraulic systems with large flow rates, it is more common to process positioning holes and smooth hole oil ports on the oil filter and then connect them with a flange-type metal pipe assembly. However, sometimes it is limited by the different structures of the host equipment itself, and the needs of avoiding interference and adjustable direction during installation are problems that must be solved.

[0003] The existing patent discloses a new type of bulkhead flange low-pressure pipe combined joint (publication number CN217714023U). However, this patent has the following shortcomings:

[0004] 1. This structure is suitable for the connection between the relatively standard SAEJ518 standard flange oil port components in the hydraulic system.

[0005] 2. A reverse thorn is provided at one end away from the flange structure; the locking nut cooperates with the external thread on the connecting joint to achieve fixed installation of the low-pressure pipe joint, but the direction cannot be adjusted when the structure is limited.

[0006] 3. The right end of the flange bulkhead low-pressure pipe joint is a combination of a locking external thread and a hollow rod structure that cooperates with the installation of the low-pressure cloth-clamped hose. It plays a dual role of fixing with the plate through the locking nut and connecting with the clamp-connected low-pressure hose. However, it is difficult to assemble when the inner diameter of the multi-layer reverse dial and the clamp-type hose has an interference fit. Summary of the invention

[0007] In view of the deficiencies of the prior art, the utility model provides a flange-type, adjustable metal pipe assembly, aiming to solve the problem of interference with the layout of spatial structural parts when the hydraulic system between the filter and the oil tank in the current bulldozer products is connected by pipe fittings.

[0008] The utility model is implemented according to the following technical solutions:

[0009] In a first aspect, the utility model provides a flange-type, adjustable metal pipe assembly, comprising:

[0010] Locking flange, with a central through hole and multiple mounting holes Ⅰ;

[0011] An adjustable metal pipe, one end of which is inserted into the central through hole, and the other end is used for installing an oil suction pipe;

[0012] A first locking member is used to lock and fix the position of the adjustable metal pipe after the direction is adjusted in the locking flange;

[0013] A mounting plate, one end face of which is sleeved on the central protruding annular cylinder of the locking flange, the mounting plate and the locking flange are fixed to the oil filter by fasteners, and the other end face of the mounting plate is fixed to the vehicle frame;

[0014] The second locking member is used to lock and fix the mounting plate and the locking flange.

[0015] In some embodiments, the locking flange is composed of a flat plate with a hole in the center and an annular cylinder extending outward around the center hole of the flat plate; the outer circumference of the annular cylinder is provided with an external thread for assembling the second locking piece, and the inner circumference of the annular cylinder is provided with an internal thread for assembling the adjustable metal pipe.

[0016] In some embodiments, the central hole of the plate is a conical hole, and a circle of O-shaped grooves arranged around the conical hole is provided on the plane of the plate away from the annular cylinder, and a plurality of mounting holes I are also provided on the plate surrounding the O-shaped grooves.

[0017] In some embodiments, the inner hole of the annular cylinder is a stepped hole, an O-ring is installed at the inner step of its port, a gasket is installed at the end face of the stepped hole, the adjustable metal pipe is passed through the gasket, the O-ring and the stepped hole, and the first locking member pushes the gasket to move axially inward and then squeezes the O-ring to achieve sealing between the adjustable metal pipe and the annular cylinder.

[0018] In some embodiments, the adjustable metal pipe is a double-bend Z-shaped structure, and an external thread is provided on the outer circumference of one port, which is used to cooperate with the internal thread of the annular cylinder, and its installation direction can be adjusted by rotating the adjustable metal pipe; the outer circumference of the other port of the adjustable metal pipe is provided with a circle of convex trapezoidal structure for installing a clamp-type oil suction rubber hose.

[0019] In some embodiments, the mounting plate is a double-bend Z-shaped structure, and the center of the end face of the mounting plate mounted on the annular cylinder is provided with a through hole through which the annular cylinder passes and a plurality of mounting holes II arranged around the through hole, and the plurality of mounting holes II correspond one-to-one with the mounting holes I on the locking flange, and the fasteners are bolts, which are passed through the mounting holes II and the mounting holes I and then tightened on the oil filter; the other end face of the mounting plate is provided with at least one keyway hole for fixing to the frame.

[0020] In some embodiments, the first locking member is a locking nut with a hexagonal structure, and the adjustable metal pipe is inserted into the locking nut. The two are threadedly connected to convert the rotational motion of the locking nut on the adjustable metal pipe into axial linear motion and then adhere to the end face of the annular cylinder, thereby locking and fixing the adjustable metal pipe.

[0021] In some embodiments, the second locking member is a locking ring with four edges, the annular cylinder is inserted into the locking ring, and the two are threadedly connected to convert the rotational motion of the locking ring on the annular cylinder into axial linear motion, and then press the mounting plate to fix the mounting plate on the locking flange.

[0022] In a second aspect, the utility model provides a hydraulic system located between a filter and an oil tank, comprising the above-mentioned flange-type, adjustable metal pipe assembly.

[0023] In a third aspect, the utility model provides an engineering machinery equipped with the above-mentioned flange-type, adjustable metal pipe assembly; or, equipped with the above-mentioned hydraulic system.

[0024] Beneficial effects of the utility model:

[0025] The locking flange in the overall structure has a locking thread on the outside of the annular cylindrical end, which is locked with the mounting plate through a locking ring, thus avoiding the defect of the flange sealing surface being deformed by heat and leaking oil when welding with the mounting plate during the production process.

[0026] When the overall structure is connected to the oil filter by bolts, it is also fixed to the vehicle frame or other structural parts through two keyway holes at the other end of the mounting plate.

[0027] The adjustable metal pipe is a Z-shaped structure and is formed by forging. One end is processed into a convex trapezoid for installing a clamp-type oil suction rubber hose, and the other end is processed with an adjustable external thread to achieve the adjustment of its direction during installation.

[0028] The locking ring has four edges milled on the outer cylindrical surface and a locking internal threaded hole processed inside. It has a simple structure and is easy to install while avoiding the interference problem between the usual hexagonal structure and the bolts. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] The accompanying drawings are part of the present invention and are used to provide a further understanding of the present invention. The schematic embodiments of the present invention and their descriptions are used to explain the present invention, but do not constitute an improper limitation on the present invention. Obviously, the accompanying drawings described below are only some embodiments. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without creative work.

[0030] In the attached picture:

[0031] Figure 1 It is a partial cross-sectional view of the flange-type, adjustable metal pipe assembly of the utility model;

[0032] Figure 2 It is a top view of the flange-type, adjustable metal pipe assembly of the utility model;

[0033] Figure 3 It is a cross-sectional view of the flange-type, adjustable metal pipe assembly of the utility model taken along the AA plane;

[0034] Figure 4 This is a schematic diagram of a locking flange of the utility model (a is a main view, b is a cross-sectional view);

[0035] Figure 5 Schematic diagram of the adjustable metal pipe of the utility model (a is a partial cross-sectional view, b is a side view);

[0036] Figure 6 Schematic diagram of the first locking member of the utility model (a is the main view, b is the cross-sectional view);

[0037] Figure 7 Schematic diagram of the second locking member of the utility model (a is a main view, b is a cross-sectional view);

[0038] Figure 8 Schematic diagram of the installation plate of the utility model (a is a top view, b is a main view).

[0039] Figure identification: 1. Locking flange, 2. Adjustable metal pipe, 3. First locking piece, 4. Gasket, 5. O-ring, 6. Second locking piece, 7. Mounting plate, 1-1. Mounting hole I, 1-2. Internal thread, 1-3. External thread, 1-4. O-groove, 1-5. Tapered hole, 2-1. External thread, 2-2. Convex trapezoidal structure, 7-1. Mounting hole II, 7-2. Through hole, 7-3. Keyway hole, 8-bolt.

[0040] It should be noted that these drawings and textual descriptions are not intended to limit the conceptual scope of the present invention in any way, but rather to illustrate the concept of the present invention for those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0041] In order to make the purpose, technical solutions and advantages of the embodiments of the utility model clearer, the technical solutions in the embodiments will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. The following embodiments are used to illustrate the utility model but are not used to limit the scope of the utility model.

[0042] In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "inside", "outside", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention.

[0043] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0044] like Figure 1 , Figure 2 , Figure 3 As shown, a flange-type, adjustable metal pipe assembly includes a locking flange 1, an adjustable metal pipe 2, a first locking piece 3, a mounting plate 7, and a second locking piece 6; the locking flange 1 has a central through hole; one end of the adjustable metal pipe 2 is inserted into the central through hole, and the other end is used to install the oil suction pipe; the first locking piece 3 locks and fixes the position of the adjustable metal pipe 2 after the direction is adjusted in the locking flange 1; one end face of the mounting plate 7 is sleeved on the central protruding annular cylinder of the locking flange 1, and the mounting plate 7 and the locking flange 1 are fixed to the oil filter by fasteners, and the other end face of the mounting plate 7 is fixed to the frame; the second locking piece 6 is used to lock and fix the mounting plate 7 to the locking flange 1.

[0045] The above-mentioned locking flange is further described below.

[0046] like Figure 4 As shown, the locking flange 1 is composed of a flat plate with a hole in the center and an annular cylinder extending outward around the center hole of the flat plate; the outer circumference of the annular cylinder is provided with an external thread 1-3 for assembling the second locking member 6, and the inner circumference of the annular cylinder is provided with an internal thread 1-2 for assembling the adjustable metal pipe 2.

[0047] Further solutions, such as Figure 4 As shown, the center hole of the plate is a tapered hole 1-5, which is used to compensate for the flatness error during its plane machining process. A circle of O-shaped grooves 1-4 arranged around the tapered hole 1-5 is provided on the plane of the plate away from the annular cylinder, and a plurality of mounting holes Ⅰ1-1 are also provided on the plate around the O-shaped grooves 1-4.

[0048] Further solutions, such as Figure 1 , Figure 3 , Figure 4 As shown, the inner hole of the annular cylinder is a stepped hole, an O-ring 5 is installed at the inner step of its port, a gasket 4 is installed at the end face of the stepped hole, and the adjustable metal pipe 2 is inserted through the gasket 4, the O-ring 5 and the stepped hole. The first locking member 3 pushes the gasket 4 to move axially inward and then squeezes the O-ring 5 to achieve sealing between the adjustable metal pipe 2 and the annular cylinder.

[0049] The above-mentioned adjustable metal pipe is further described below.

[0050] like Figure 5 As shown, the adjustable metal pipe 2 is a double-bend Z-shaped structure, and an outer circumferential surface of one port is provided with an external thread 2-1 for matching and connecting with the internal thread 1-2 of the annular cylinder. The installation direction of the adjustable metal pipe 2 can be adjusted by rotating the adjustable metal pipe 2; the outer circumferential surface of the other port of the adjustable metal pipe 2 is provided with a circle of convex trapezoidal structure 2-2 for installing a clamp-type oil suction rubber hose.

[0051] The above-mentioned mounting plate is further described below.

[0052] like Figure 8 As shown, the mounting plate 7 is a double-bend Z-shaped structure. The center of the end face of the mounting plate 7 mounted on the annular cylinder is provided with a through hole 7-2 through which the annular cylinder is provided, and a plurality of mounting holes II7-1 are arranged around the through hole 7-2. The plurality of mounting holes II7-1 correspond one to one with the mounting holes I1-1 on the locking flange 1. The fasteners are bolts 8. The bolts 8 are passed through the mounting holes II7-1 and the mounting holes I1-1 and then tightened on the oil filter. The other end face of the mounting plate 7 is provided with at least one keyway hole 7-3 for fixing to the frame.

[0053] As can be seen from the above, the outer surface of the annular cylinder of the locking flange 1 is processed with external threads 1-3, and the second locking member 6 is used to lock the mounting plate 7, thereby avoiding the defect of oil leakage caused by the flange sealing surface being deformed by heat during welding with the mounting plate 7 during the production process. Secondly, the sealing surface of the locking flange 1 is connected to the oil filter through bolts 8, and is fixed to the frame or other structural parts through two key slot holes 7-3 at the other end of the mounting plate 7.

[0054] The first locking member is further described below.

[0055] like Figure 6 As shown, the first locking member 3 is a locking nut with a hexagonal structure, and the adjustable metal pipe 2 is inserted into the locking nut. The two are threadedly connected, and the rotational motion of the locking nut on the adjustable metal pipe 2 is converted into axial linear motion and then pressed against the end face of the annular cylinder, thereby locking and fixing the adjustable metal pipe 2.

[0056] The second locking member is further described below.

[0057] like Figure 7 As shown, the second locking member 6 is a locking ring with four edges, and the annular cylinder is inserted into the locking ring. The two are threadedly connected to convert the rotational motion of the locking ring on the annular cylinder into axial linear motion and then press the mounting plate to fix the mounting plate 7 on the locking flange 1.

[0058] It should be noted that, since the second locking member has four edges milled on the outer cylindrical surface and a locking internal threaded hole machined inside, its structure is simple and easy to install while avoiding the interference problem between the usual hexagonal structure and the bolt.

[0059] In summary, the utility model provides a flange-type, adjustable metal pipe assembly, the purpose of which is to solve the problem of interference with the layout of spatial structural parts when the hydraulic system between the filter and the oil tank in the current bulldozer products is connected by pipe fittings. The structure in the utility model is mainly composed of a locking flange, an adjustable metal pipe, and a mounting plate. The principle is that the plane-processed O-shaped groove and bolt mounting hole of the locking flange are used to connect with the oil port surface of the oil filter, and are fixed to the mounting plate through the bolt mounting holes in the mounting plate. The locking external thread of the other annular cylindrical end is locked with a locking ring through the perforation on the mounting plate, and the internal oil port thread that meets the ISO6149-1 standard is connected to the adjustable metal pipe through a locking nut, a gasket, and an O-ring to achieve direction adjustment. The overall structure is that the sealing surface of the locking flange is connected to the oil filter by bolts, and is fixed to the frame or other structural parts through the two keyway holes at the other end of the mounting plate.

[0060] The utility model also provides a hydraulic system located between a filter and an oil tank, comprising the above-mentioned flange-type, direction-adjustable metal pipe assembly.

[0061] The utility model also provides an engineering machinery, which is equipped with the above-mentioned flange-type adjustable metal pipe assembly; or is equipped with the above-mentioned hydraulic system.

[0062] In the description provided herein, a large number of specific details are described. However, it is understood that embodiments of the present invention can be practiced without these specific details. In some instances, well-known methods, structures and techniques are not shown in detail so as not to obscure the understanding of this description.

[0063] In addition, those skilled in the art will understand that, although some embodiments described herein include certain features included in other embodiments but not other features, the combination of features of different embodiments also means being within the scope of protection of the present utility model and forming different embodiments. For example, in the above embodiments, those skilled in the art can use them in combination according to the known technical solutions and the technical problems to be solved by the present application.

[0064] The above is only a preferred embodiment of the utility model, and does not limit the utility model in any form. Although the utility model has been disclosed as a preferred embodiment as above, it is not used to limit the utility model. Any technician familiar with this patent can make some changes or modify the technical content suggested above into an equivalent embodiment with equivalent changes without departing from the scope of the technical solution of the utility model. However, any simple modification, equivalent change and modification made to the above embodiment based on the technical essence of the utility model without departing from the content of the technical solution of the utility model still falls within the scope of the solution of the utility model.

Claims

1. A flange-type, adjustable metal pipe assembly, characterized in that: include: Locking flange with a central through hole; An adjustable metal pipe, one end of which is inserted into the central through hole, and the other end is used for installing an oil suction pipe; A first locking member is used to lock and fix the position of the adjustable metal pipe after the direction is adjusted in the locking flange; A mounting plate, one end face of which is sleeved on the central protruding annular cylinder of the locking flange, the mounting plate and the locking flange are fixed to the oil filter by fasteners, and the other end face of the mounting plate is fixed to the vehicle frame; The second locking member is used to lock and fix the mounting plate and the locking flange.

2. A flange-type, adjustable metal pipe assembly according to claim 1, characterized in that: The locking flange is composed of a flat plate with a hole in the center and an annular cylinder extending outward around the center hole of the flat plate; The outer circumferential surface of the annular cylinder is provided with an external thread for assembling the second locking member, and the inner circumferential surface of the annular cylinder is provided with an internal thread for assembling the adjustable metal pipe.

3. A flange-type, adjustable metal pipe assembly according to claim 2, characterized in that: The central hole of the plate is a tapered hole. A circle of O-shaped grooves arranged around the tapered hole is provided on the plane of the plate away from the annular cylinder. A plurality of mounting holes I are also provided on the plate around the O-shaped grooves.

4. A flange-type, adjustable metal pipe assembly according to claim 2, characterized in that: The inner hole of the annular cylinder is a stepped hole, an O-ring is installed at the inner step of its port, a gasket is installed at the end face of the stepped hole, the adjustable metal pipe is inserted through the gasket, the O-ring and the stepped hole, and the first locking member pushes the gasket to move axially inward and then squeezes the O-ring to achieve sealing between the adjustable metal pipe and the annular cylinder.

5. A flange-type, adjustable metal pipe assembly according to claim 1, characterized in that: The adjustable metal pipe is a double-bend Z-shaped structure, and an outer peripheral surface of one end thereof is provided with an external thread for matching and connecting with the internal thread of the annular cylinder. The installation direction of the adjustable metal pipe can be adjusted by rotating the adjustable metal pipe; The outer peripheral surface of the other port of the adjustable metal pipe is provided with a circle of convex trapezoidal structure for installing a clamp-type oil-suction rubber hose.

6. A flange-type, adjustable metal pipe assembly according to claim 1, characterized in that: The mounting plate is a double-bend Z-shaped structure. The center of the end surface of the mounting plate mounted on the annular cylinder is provided with a through hole through which the annular cylinder is provided and a plurality of mounting holes II arranged around the through hole. The plurality of mounting holes II correspond to the mounting holes I on the locking flange one by one. The fastener is a bolt, which is provided through the mounting holes II and the mounting holes I and then tightened on the oil filter. The other end surface of the mounting plate is provided with at least one key slot hole for fixing on the vehicle frame.

7. A flange-type, adjustable metal pipe assembly according to claim 1, characterized in that: The first locking piece is a locking nut with a hexagonal structure, and the adjustable metal pipe is inserted into the locking nut. The two are threadedly connected, and the rotational motion of the locking nut on the adjustable metal pipe is converted into axial linear motion and then pressed against the end face of the annular cylinder, thereby locking and fixing the adjustable metal pipe.

8. A flange-type, adjustable metal pipe assembly according to claim 1, characterized in that: The second locking member is a locking ring with four edges, the annular cylinder is inserted into the locking ring, and the two are threadedly connected to convert the rotational motion of the locking ring on the annular cylinder into axial linear motion, and then press the mounting plate to fix the mounting plate on the locking flange.

9. A hydraulic system located between a filter and an oil tank, characterized in that: A flange-type, adjustable metal pipe assembly comprising any one of claims 1 to 8.

10. An engineering machine, characterized in that: A flange-type, adjustable metal pipe assembly according to any one of claims 1 to 8 is installed; or a hydraulic system according to claim 9 is installed.

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