Assembling tool for beam sealing joint in narrow and small space

Abstract

The invention provides an assembling tool for a beam sealing joint in a narrow space. The assembling tool comprises a base body, a limiting movable wrench, a power tightening wrench and a wheel train. A limiting movable wrench is installed on one side of the base body through a revolute pair, can rotate within a limiting range and is used for being matched with the angle of a Beam sealing male connector. The other side of the base body is provided with a power tightening wrench through a revolute pair, and the power tightening wrench is used for clamping a jacket nut of a beam sealing joint; the power tightening wrench is in transmission connection with the wheel train, and the wheel train drives the power tightening wrench to rotate; the gear train is located in the other side of the base body. The gear train drives the power tightening wrench to rotate, so that the installation of the beam sealing joint is realized, and the base body is slender and can be placed in a narrow space.

Description

Technical Field

[0001] The invention relates to the field of assembly of hydraulic joints, in particular to an assembly tool for a Liang's sealing joint in a narrow space. Background Art

[0002] In the hydraulic control system of aviation equipment, the sealing performance of the high-pressure pipeline connection parts is crucial to the stable operation of the entire system. The pipeline system is often in a harsh environment with high temperature, pulse high pressure, and severe vibration. In this case, traditional sealing joints often cannot meet the needs of long-term stable operation. It is easy to cause sealing failure due to high pressure and vibration, which in turn causes leakage and other problems, which not only affects the service performance of the product, but also may bring safety hazards.

[0003] Liang's sealing joint is proposed as a high-pressure sealing solution, which can better solve the problem of high-pressure sealing. However, the assembly space in the aircraft engine compartment is limited. Some assembly spaces are relatively small and the adjustable wrench cannot be inserted into them, resulting in the inability to conveniently disassemble or tighten the Liang's sealing joint. Summary of the invention

[0004] In view of the deficiencies in the prior art, the present invention provides an assembly tool for Liang's sealing joints in a narrow space, which can achieve the installation of the Liang's sealing joint by driving a power tightening wrench to rotate through a gear train; in addition, the base is slender and can be placed in a narrow space.

[0005] The present invention achieves the above technical objectives through the following technical means.

[0006] An assembly tool for Liang's sealing joints in a narrow space comprises a base, a limited movable wrench, a power tightening wrench and a gear train; the limited movable wrench is installed on one side of the base through a rotating pair, and the limited movable wrench can rotate within a limited range and is used to match the angle of the Liang's sealing male joint; the power tightening wrench is installed on the other side of the base through a rotating pair and is used to clamp the outer sleeve nut of the Liang's sealing joint; the power tightening wrench is connected to the gear train in transmission connection, and the power tightening wrench is driven to rotate by the gear train; the gear train is located inside the other side of the base.

[0007] Furthermore, an arc groove is provided on the other side of the base, and a movable handle is installed on the limited movable wrench. The movable handle is located in the arc groove, and the arc groove is used to limit the rotation angle of the limited movable wrench.

[0008] Furthermore, the power tightening wrench is provided with a notch for clamping the outer sleeve nut profile, and an outer profile on one side of the power tightening wrench is provided with incomplete external teeth, and the incomplete external teeth are meshed with at least one gear in the gear train.

[0009] Further, the gear train includes a power input end, and the power input end transmits power to the incomplete external teeth through parallel torque transmission paths respectively; several external gears are included in the torque transmission paths.

[0010] Further, the power input end is a power input gear shaft, and a circumferential constraint gear and an external gear assembly are included in the torque transmission paths; a circumferential constraint gear meshing with the incomplete external teeth is arranged near the notch of the power wrench; the power input gear shaft meshes with the incomplete external teeth, and power is transmitted between the power input gear shaft and the circumferential constraint gear through the external gear assembly.

[0011] Further, the power input gear shaft and the circumferential constraint gear have the same rotational speed.

[0012] Further, circumferential constraint gears meshing with the incomplete external teeth are respectively arranged near both sides of the notch of the power wrench, and one of the circumferential constraint gears is connected to the power input gear shaft through the external gear assembly.

[0013] Further, a U-shaped cavity is arranged inside the other side of the base body, and the gear train is installed in the U-shaped cavity; a side baffle installed on the other side of the base body is arranged on one side of the U-shaped cavity.

[0014] The beneficial effects of the present invention are as follows:

[0015] 1. For the assembly tool of the Liang's sealing joint for narrow spaces of the present invention, the base body is slender and can be placed in narrow spaces; a limiting movable wrench and a power wrench are arranged inside the base body, and a phase difference can exist between the limiting movable wrench and the power wrench, which is convenient for disassembling and installing various Liang's sealing joints. The power wrench is driven to rotate by the gear train to realize the installation of the Liang's sealing joint, and rapid installation and disassembly can be achieved.

[0016] 2. For the assembly tool of the Liang's sealing joint for narrow spaces of the present invention, the power input end transmits power to the incomplete external teeth through parallel torque transmission paths respectively. On the one hand, the two torque transmission paths can be more labor-saving and can realize the rapid response of the power wrench; on the other hand, when the incomplete external teeth rotate a certain angle, at least one torque transmission path can ensure continuous torque transmission.

[0017] 3. For the assembly tool of the Liang's sealing joint for narrow spaces of the present invention, the modular design concept is adopted and it is composed of multiple detachable components. Such a design not only makes the assembly tool more portable but also greatly facilitates the operation in narrow spaces.

[0018] 4. The assembly tool for the Liang's sealing joint used in a narrow space according to the present invention applies an external force through the power input gear shaft, so that the overall force on the Liang's sealing joint is uniform, which helps to improve the stability and vibration resistance of the joint. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. The drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained obviously without creative efforts based on these drawings.

[0020] Figure 1 It is a schematic diagram of the use of the assembly tool for the Liang's sealing joint used in a narrow space according to the present invention.

[0021] Figure 2 It is a left axonometric three-dimensional view of the assembly tool according to the present invention.

[0022] Figure 3 It is a right axonometric three-dimensional view of the assembly tool according to the present invention.

[0023] Figure 4 It is a front perspective view of the assembly tool according to the present invention.

[0024] Figure 5 It is a left perspective view of the assembly tool according to the present invention.

[0025] Figure 6 It is a three-dimensional view of the gear train transmission according to the present invention.

[0026] Figure 7 It is a left view of the gear train transmission according to the present invention.

[0027] Figure 8 It is a schematic diagram of the principle of the gear train transmission according to the present invention.

[0028] In the figure:

[0029] 1 - Female Liang's sealing joint; 2 - Male Liang's sealing joint; 3 - Conduit; 4 - Outer ring sealing gasket; 5 - Inner ring sealing gasket; 6 - Outer sleeve nut; 7 - Base; 8 - Limited movable wrench; 9 - Power tightening wrench; 10 - Side baffle; 11 - Movable handle; 12 - Fixed handle; 13 - Power input gear; 14 - Circumferential constraint gear; 15 - First transmission gear; 16 - Second transmission gear; 13 - Power input gear shaft. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0030] Embodiments of the present invention will be described in detail below. Examples of the embodiments are shown in the accompanying drawings, where like or similar reference numerals designate like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the accompanying drawings are exemplary and are intended to explain the present invention and should not be construed as limiting the present invention.

[0031] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "axial", "radial", "vertical", "horizontal", "inner", "outer", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, "a plurality" means two or more unless otherwise specifically defined.

[0032] In the present invention, unless otherwise clearly specified and defined, the terms "mounted", "connected", "coupled", "fixed", etc. shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0033] Such as Figure 2 and Figure 3As shown, the assembly tool for the Liang's sealing joint in a narrow space described in the present invention includes a base 7, a limited movable wrench 8, a power tightening wrench 9 and a gear train; the base 7 is slender, and the base 7 in the embodiment is in a U-shaped long cylinder, which is convenient for entering and exiting a narrow space; the base 7 is detachably mounted with a fixed handle 12 at the bottom, which is convenient for operators to hold. The limited movable wrench 8 is mounted on one side of the base 7 through a rotating pair, and the limited movable wrench 8 can rotate within a limited range to match the angle of the Liang's sealing male joint 2; the power tightening wrench 9 is mounted on the other side of the base 7 through a rotating pair to clamp the outer sleeve nut 6 of the Liang's sealing joint; the power tightening wrench 9 is connected to the gear train in transmission, and the power tightening wrench 9 is driven to rotate by the gear train; the gear train is located on the other side of the base 7. There can be a phase difference between the limited movable wrench 8 and the power tightening wrench 9, which is convenient for disassembling and installing various Liang's sealing joints. The power tightening wrench is driven to rotate by the gear train to achieve the installation of the Liang's sealing joint, and quick installation and disassembly can be achieved. The revolving pair is a common rotating structure. Taking the movable wrench 8 as an example, a self-lubricating sleeve is provided between the outer ring of the movable wrench 8 and the base 7, or a rolling body is provided between the movable wrench 8 and the base 7.

[0034] like Figure 1 As shown, the Liang's sealing joint is composed of a Liang's sealing female joint 1, a Liang's sealing male joint 2, and a conduit 3 connected by a sleeve nut 6, wherein the two ends of the Liang's sealing male joint 2 are connected to the Liang's sealing female joint 1, and the other end of the Liang's sealing female joint 1 is used to connect the conduits 3 of different pipelines. The outer contours of the Liang's sealing male joint 2 and the sleeve nut 6 are both hexagonal, so the limiting movable wrench 8 and the power tightening wrench 9 are provided with matching semi-hexagonal grooves, similar to the grooves of the hexagonal wrench opening. In the figure, the limiting movable wrench 8 is matched with the Liang's sealing male joint 2, that is, the Liang's sealing male joint 2 is located in the semi-hexagonal groove of the limiting movable wrench 8; and the power tightening wrench 9 is clamped with the sleeve nut 6 of the Liang's sealing joint. The clamping can be understood as the semi-hexagonal groove of the power tightening wrench 9 covering the sleeve nut 6, which can realize that the power tightening wrench 9 drives the sleeve nut 6 to rotate.

[0035] like Figure 3 As shown, an arc groove is provided on the other side of the base 7, and a movable handle 11 is installed on the limited movable wrench 8. The movable handle 11 is located in the arc groove. The arc groove is used to limit the rotation angle of the limited movable wrench 8, and the angle of the limited movable wrench 8 can be easily adjusted. During assembly, the movable handle 11 can be held to adjust the angle of the movable wrench 8 left and right, so that it is easier to match the angle of the Liang's sealed male connector 2.

[0036] like Figure 4 and Figure 5As shown, a U-shaped cavity is provided inside the right side of the base body 7, and a gear train is installed in the U-shaped cavity; a side baffle 10 detachably installed on the other side of the base body 7 is provided on one side of the U-shaped cavity, which is convenient for disassembly and maintenance.

[0037] As Figure 6 shown, a notch for clamping the contour of the outer sleeve nut 6 is provided on the power tightening wrench 9, and incomplete external teeth are provided on the outer contour at one end of the power tightening wrench 9, and the incomplete external teeth are engaged with at least one gear in the gear train.

[0038] In order to be more labor-saving and achieve a rapid response of the power tightening wrench, the gear train of the present invention includes a power input end, and the power input end transmits power to the incomplete external teeth through parallel torque transmission paths respectively; several external gears are included in the torque transmission path. The two parallel torque transmission paths can also ensure that after the incomplete external teeth rotate a certain angle, at least one torque transmission path can ensure continuous torque transmission.

[0039] As Figure 7 and Figure 8 shown, in the embodiment, the power input end is a power input gear shaft 13, and the torque transmission path includes a circumferentially constrained gear 14 and an external gear assembly; the external gear assembly includes 4 first transmission gears 15 and a second transmission gear 16. The power input gear shaft 13 is directly engaged with the incomplete external teeth. If the center distance is not enough, the power input gear shaft 13 can be engaged with the incomplete external teeth through an external gear, which is one torque transmission path; a circumferentially constrained gear 14 engaged with the incomplete external teeth is provided near the notch of the power tightening wrench 9, and power is transmitted from the power input gear shaft 13 to the incomplete external teeth through the second transmission gear 16 and 4 first transmission gears 15 in sequence between the power input gear shaft 13 and the circumferentially constrained gear 14, which is another torque transmission path. The number of teeth and the module of the power input gear shaft 13, the circumferentially constrained gear 14 and the first transmission gear 15 are the same, and the rotational speeds of the power input gear shaft 13 and the circumferentially constrained gear 14 are the same. There are 2 circumferentially constrained gears 14, one of the circumferentially constrained gears 14 is connected to the power input gear shaft 13 through an external gear assembly, and the other circumferentially constrained gear 14 is only engaged with the incomplete external teeth.

[0040] The power input gear 13 is driven to rotate by an electric screwdriver. On the one hand, the power input gear 13 can directly drive the incomplete external teeth of the power tightening wrench 9 to rotate. On the other hand, the power input gear 13 simultaneously transmits power to the incomplete external teeth through the second transmission gear 16 and 4 first transmission gears 15. The rotational directions of the two torque transmission paths can both achieve the rotation of the power tightening wrench 9. As Figure 7As shown, when the power tightening wrench 9 rotates counterclockwise by a certain angle, the circumferential constraint gear 14 on the left is disengaged from the incomplete external teeth. At this time, only the power input gear 13 directly drives the incomplete external teeth of the power tightening wrench 9 to rotate, while the circumferential constraint gear 14 on the right can ensure the stability of the gear train. The parallel torque transmission path can avoid the problem of abnormal operation caused by the vacancy at the upper part of the power tightening wrench 9.

[0041] It should be understood that although this specification is described according to various embodiments, not every embodiment only contains an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

[0042] The series of detailed descriptions listed above are only specific descriptions of the feasible embodiments of the present invention, and they are not intended to limit the protection scope of the present invention. Any equivalent embodiments or changes made without departing from the technical spirit of the present invention should be included in the protection scope of the present invention.

Claims

1. An assembly tool for Liang's sealing joints in narrow spaces, characterized in that: It comprises a base (7), a limiting movable wrench (8), a power tightening wrench (9) and a gear train; A limited movable spanner (8) is installed on one side of the base (7) through a rotating pair, and the limited movable spanner (8) is rotatable within a limited range and is used to match the angle of the Liang's sealed male joint (2); a power tightening spanner (9) is installed on the other side of the base (7) through a rotating pair and is used to clamp the outer sleeve nut (6) of the Liang's sealed joint; the power tightening spanner (9) is connected to the gear train in transmission, and the power tightening spanner (9) is driven to rotate by the gear train; the gear train is located inside the other side of the base (7).

2. The assembly tool for Liang's sealing joint in a narrow space according to claim 1, characterized in that: An arc groove is provided on the other side of the base (7), and a movable handle (11) is installed on the limited movable wrench (8). The movable handle (11) is located in the arc groove, and the arc groove is used to limit the rotation angle of the limited movable wrench (8).

3. The assembly tool for Liang's sealing joint in a narrow space according to claim 1, characterized in that: The power tightening wrench (9) is provided with a notch for clamping the outline of the outer sleeve nut (6), and an incomplete external tooth is provided on the outer outline of one side of the power tightening wrench (9), and the incomplete external tooth is meshed with at least one gear in the gear train.

4. The assembly tool for Liang's sealing joint in a narrow space according to claim 3, characterized in that: The gear train includes a power input end, and the power input end transmits power to the incomplete external teeth through parallel torque transmission paths; the torque transmission path includes a plurality of external gears.

5. The assembly tool for Liang's sealing joint in a narrow space according to claim 4, characterized in that: The power input end is a power input gear shaft (13), and the torque transmission path includes a circumferential constraint gear (14) and an external gear assembly; a circumferential constraint gear (14) meshing with incomplete external teeth is provided near the notch of the power tightening wrench (9), the power input gear shaft (13) meshes with the incomplete external teeth, and power is transmitted between the power input gear shaft (13) and the circumferential constraint gear (14) through the external gear assembly.

6. The assembly tool for Liang's sealing joint in a narrow space according to claim 5, characterized in that: The power input gear shaft (13) and the circumferential constraint gear (14) have the same rotation speed.

7. The assembly tool for Liang's sealing joint in a narrow space according to claim 5, characterized in that: Circumferential constraint gears (14) meshing with incomplete external teeth are respectively arranged near both sides of the notch of the power tightening wrench (9), and one of the circumferential constraint gears (14) is connected to the power input gear shaft (13) through an external gear assembly.

8. The assembly tool for Liang's sealing joint in a narrow space according to claim 1, characterized in that: A U-shaped cavity is provided inside the other side of the base (7), and a gear train is installed in the U-shaped cavity; and a side baffle (10) is provided on one side of the U-shaped cavity and is installed on the other side of the base (7).

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