Auxiliary disassembly and assembly tool for underwater vehicle pump jet propeller stator

Abstract

The utility model discloses an auxiliary disassembling and assembling tool for a pump-jet propeller stator of an underwater vehicle, and aims to solve the problems that a traditional pump-jet propeller stator disassembling and assembling mode is time-consuming and labor-consuming and has potential safety hazards. The tool comprises a supporting bracket, an expansion mechanism, a locking piece, a rotating nut seat, a lifting screw mechanism and the like. By rotating the lifting screw mechanism, the expansion mechanism can extend into the stator disassembly and assembly process hole and expand to fix the stator, and then the rotating nut seat is reversely rotated to realize drawing of the stator. The tool is simple in structure, convenient to operate and capable of remarkably improving the disassembly and assembly efficiency, reducing the labor intensity and effectively avoiding potential safety hazards such as slipping and falling of the stator in the disassembly and assembly process. The device has strong adaptability and portability, provides efficient and safe tool support for the maintenance of the underwater vehicle, and is beneficial to the improvement of the use performance and reliability of the underwater vehicle.

Description

Technical Field

[0001] The utility model relates to the technical field of underwater vehicle pump-jet propulsion stator disassembly and assembly auxiliary tools, in particular to an underwater vehicle pump-jet propulsion stator auxiliary disassembly and assembly tool. Background Art

[0002] The underwater vehicle pump-jet propulsor is a water-jet structure propulsor that uses the reaction of water jet to generate thrust. It consists of an axisymmetric annular duct, a rotor and a stator. The annular duct and the stator are welded to form a whole (collectively referred to as the stator). Its cross-section is a flat-convex airfoil with an angle of attack with the axial coordinate. This duct form can reduce the rotor flow velocity and flow velocity, forming a boost effect similar to an axial flow pump, which can not only improve the rotor's work efficiency, but also delay the occurrence of blade cavitation. In addition, the annular duct covering the rotor and stator divides the internal and external flow fields, playing a role in sound shielding, suppression and even sound absorption. When working, the rotor in the annular duct rotates driven by the drive motor, and water is sucked into the inner cavity of the annular duct, and then ejected from the rear end opening, relying on the reaction force of the drainage to generate propulsion power.

[0003] The stator of the underwater vehicle pump-jet propulsion system is fixed to the shell only by four circumferential pins and a small axial gap. Currently, this stator is usually disassembled and assembled by manual pulling. At this time, two operators are required to stand on the left and right sides and pull the stator out of the shell shaft hole step by step by hand. This is not only time-consuming and labor-intensive, but also has the potential safety hazard of the stator slipping off and being damaged.

[0004] Therefore, it is of great significance to design an auxiliary disassembly and assembly tool for the stator of an underwater vehicle pump-jet propulsion system, which is a problem that needs to be solved urgently by technical personnel in this field. Utility Model Content

[0005] In view of the working needs and existing problems in the above-mentioned background technology, the present invention has been considered and innovated, with the aim of providing an auxiliary disassembly and assembly tool for the stator of an underwater vehicle pump-jet propulsor, which is used to complete the disassembly and assembly of the stator assembly of the pump-jet propulsor.

[0006] In order to solve the above problems and achieve the above purposes, the utility model adopts the following technical solutions:

[0007] An auxiliary disassembly and assembly tool for a stator of an underwater vehicle pump-jet propulsion system, comprising:

[0008] A support bracket (1), the support bracket (1) having a threaded center hole that cooperates with a rotating nut seat (4) to form a threaded pair;

[0009] An expansion mechanism (2), wherein the expansion mechanism (2) is connected to one end of a lifting screw mechanism (5);

[0010] A locking member (3), the locking member (3) being mounted on the lifting screw mechanism (5) and being located below a surface of the support bracket (1) close to the expansion mechanism (2);

[0011] A rotating nut seat (4), wherein the rotating nut seat (4) has a threaded center hole that cooperates with the lifting screw mechanism (5) to form a threaded pair;

[0012] A lifting screw mechanism (5) passes through the central holes of the rotating nut seat (4) and the supporting bracket (1) and is connected to the rotating nut seat (4) and the supporting bracket (1) through a locking member (3).

[0013] As a preferred solution of the utility model, the top of the support bracket (1) is a "cross" shaped structure, with a total of four rods, and each rod is connected to an "L" shaped support leg (11).

[0014] As a preferred solution of the utility model, the supporting leg (11) is provided with a screw mounting hole for fixedly connecting with the aircraft shell.

[0015] As a preferred solution of the utility model, the expansion mechanism (2) comprises:

[0016] The expansion flap (21) comprises three expansion flaps, one end of each expansion flap (21) is a three-part hollow cylinder, and the other end is a three-part hollow cylinder with a slightly larger radius and a smaller height, and the higher three-part hollow cylinder has two arc grooves distributed at both ends;

[0017] A disc spring (22), wherein the disc spring (22) is embedded in the arc groove of the expansion flap (21) to connect the three expansion flaps (21) together;

[0018] a washer (23), wherein the washer (23) is located between the locking screw (24) and the expansion flap (21);

[0019] A locking screw (24) passes through the washer (23) and is installed on the other end of the expansion flap (21) corresponding to the three-part hollow truncated cone.

[0020] As a preferred solution of the utility model, the locking member (3) is a locking nut, and the locking member (3) adopts a double-nut anti-loosening structure.

[0021] As a preferred embodiment of the utility model, the rotating nut seat (4) is in a "Y"-shaped structure, and the ends of the two rods extending from the top of the "Y"-shaped structure are connected to a cylindrical rotating nut seat handle (41), and the other ends of the two rods are connected to a hollow cylindrical connecting plate, and a cylindrical section with an internal thread hole and an external thread structure is connected below the connecting plate.

[0022] As a preferred solution of the utility model, the lifting screw mechanism (5) comprises:

[0023] A lifting screw handle (51), wherein the lifting screw handle (51) is cylindrical and fixed on the connecting head (52);

[0024] A connecting head (52), the connecting head (52) is a combination of a truncated cone and a cylindrical shape, and a hole is provided in the middle of the truncated cone for the lifting screw handle (51) to pass through and be fixed;

[0025] A screw rod (53) having one end connected to the connector (52) and the other end connected to the cone head (54).

[0026] Connection, the thread style is a T-type thread structure with self-locking function;

[0027] The cone head (54) is a cone-shaped structure, a large end is provided with a limiting structure, and a small end is provided with a mounting hole for mounting a locking screw (24).

[0028] As a preferred solution of the utility model, the hollow part inside the expansion mechanism (2) corresponds to the shape of the cone head (54) of the lifting screw mechanism (5), and the expansion mechanism (2) is axially fixed to the cone head (54) of the lifting screw mechanism (5) through a washer (23) and a locking screw (24) to form a cone sleeve expansion mechanism. Under the action of the cone head (54) of the lifting screw mechanism (5), the expansion and contraction functions of the expansion mechanism (2) are realized, thereby realizing the clamping and fixing of the stator of the pump-jet propeller.

[0029] The working principle of the utility model is as follows: before the disassembly and assembly work begins, the auxiliary disassembly and assembly tool is first connected to the screw hole of the tail section of the underwater vehicle through the screw and the screw installation hole on the support leg (11); the initial state of the expansion mechanism (2) is a contracted state, and then the expansion mechanism (2) is extended into the disassembly and assembly process hole of the stator by rotating the lifting screw mechanism (5); further, the lifting screw mechanism (5) is rotated so that the cone head (54) of the lifting screw mechanism (5) controls the expansion petal (21) of the expansion mechanism (2) to expand, thereby realizing the clamping and fixing of the stator; further, the rotating nut seat (4) is rotated in the reverse direction to realize the pulling action of the stator; after the stator is pulled out, all the screws on the support leg (11) are loosened, the auxiliary disassembly and assembly tool is removed, and then the lifting screw mechanism (5) is rotated in the reverse direction to shrink the expansion mechanism (2) so as to remove the target stator.

[0030] Beneficial effects of the utility model:

[0031] 1. The utility model improves work efficiency: by using the utility model, the time and manpower required for manual stator pulling can be significantly reduced, the labor intensity of the disassembly and assembly process is reduced, and the work efficiency is improved.

[0032] 2. The utility model reduces safety risks: The utility model effectively avoids potential safety hazards such as slipping and falling of the stator during disassembly and assembly through reliable mechanical connection and locking mechanism, thereby ensuring the safety of operators.

[0033] 3. The utility model has strong adaptability: the expansion mechanism design adopted by the utility model can adapt to stators of different models and sizes, and has strong versatility and adaptability.

[0034] 4. The utility model is easy to operate: the utility model can realize the clamping, fixing and pulling actions of the stator through simple operations. The operation is simple and easy to understand, and no complicated training and skills are required.

[0035] 5. The utility model is easy to carry and store: The utility model has a compact structure, is easy to carry and store, and can adapt to different working environments. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 This is one of the working state schematic diagrams of the stator auxiliary disassembly and assembly tooling of the utility model pump-jet propeller;

[0037] Figure 2 This is the second schematic diagram of the working state of the stator auxiliary disassembly and assembly tool of the pump-jet propeller of the utility model;

[0038] Figure 3 This is the third working state schematic diagram of the stator auxiliary disassembly and assembly tool of the utility model pump-jet propeller;

[0039] Figure 4 It is a schematic diagram of the overall three-dimensional structure of the stator auxiliary disassembly and assembly tool of the utility model pump-jet propeller;

[0040] Figure 5 It is a three-dimensional structural schematic diagram of the support bracket of the auxiliary disassembly and assembly tooling of the pump-jet propeller stator of the utility model;

[0041] Figure 6 It is a three-dimensional structural schematic diagram of the rotating nut seat of the stator auxiliary disassembly and assembly tool of the pump-jet propeller of the utility model;

[0042] Figure 7 It is a three-dimensional structural schematic diagram of the expansion mechanism of the stator auxiliary disassembly and assembly tooling of the pump-jet propeller of the utility model;

[0043] Figure 8 It is a cross-sectional view of the expansion mechanism of the stator auxiliary disassembly and assembly tooling of the utility model pump-jet propeller;

[0044] Fig. 9 It is a three-dimensional structural schematic diagram of the lifting screw mechanism of the stator auxiliary disassembly and assembly tooling of the pump-jet propeller of the utility model;

[0045] Fig.10 It is a cross-sectional view of the auxiliary disassembly and assembly tool of the stator of the pump-jet propeller of the utility model.

[0046] Among them, the numbers in the figure are: 1-support bracket, 11-support leg, 2-expansion mechanism, 21-expansion flap, 22-disc spring, 23-washer, 24-locking screw, 3-locking piece, 4-rotating nut seat, 41-rotating nut seat handle, 5-lifting screw mechanism, 51-lifting screw handle, 52-connecting head, 53-screw, 54-cone head. DETAILED DESCRIPTION

[0047] In order to make the purpose, technical solutions and advantages of the utility model patent more clear, the utility model patent is further described in detail with reference to the accompanying drawings and specific embodiments; it should be understood that these descriptions are only exemplary and are not intended to limit the scope of the utility model patent; in addition, in the following description, the description of well-known structures and technologies is omitted to avoid unnecessary confusion of the concept of the utility model patent.

[0048] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" 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, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0049] like Figure 4 — Fig.10 The stator auxiliary disassembly and assembly tool of the pump-jet propulsion device of an underwater vehicle shown in the figure comprises:

[0050] A support bracket 1, wherein the support bracket 1 has a threaded center hole that cooperates with a rotating nut seat 4 to form a threaded pair;

[0051] An expansion mechanism 2, wherein the expansion mechanism 2 is connected to one end of a lifting screw mechanism 5;

[0052] A locking member 3, wherein the locking member 3 is mounted on the lifting screw mechanism 5 and is located below a surface of the support bracket 1 close to the expansion mechanism 2;

[0053] A rotating nut seat 4, wherein the rotating nut seat 4 has a threaded center hole that cooperates with the lifting screw mechanism 5 to form a threaded pair;

[0054] The lifting screw mechanism 5 passes through the central holes of the rotating nut seat 4 and the supporting bracket 1 and is connected with the rotating nut seat 4 and the supporting bracket 1 through the locking member 3 .

[0055] Further, such as Figure 5 As shown, the top of the support bracket 1 is a "cross" shaped structure, with a total of four rods, and each rod is connected to an "L" shaped leg 11.

[0056] Specifically, Figure 5 As shown, the support leg 11 is provided with a screw mounting hole for fixedly connecting with the aircraft shell.

[0057] Further, such as Figure 7 — Figure 8 As shown, the expansion mechanism 2 includes:

[0058] The expansion flap 21 has three expansion flaps 21 in total. One end of each expansion flap 21 is a three-divided hollow cylinder, and the other end is a three-divided hollow cylinder with a slightly larger radius and a smaller height. The higher three-divided hollow cylinder has two arc grooves distributed at both ends.

[0059] The disc spring 22 is embedded in the arc groove of the expansion flap 21 to connect the three expansion flaps 21 together;

[0060] A washer 23, wherein the washer 23 is located between the locking screw 24 and the expansion flap 21;

[0061] The locking screw 24 passes through the washer 23 and is installed at the other end of the expansion flap 21 corresponding to the three-part hollow truncated cone.

[0062] Specifically, Fig.10 As shown, the locking member 3 is a locking nut, which adopts a double-nut anti-loosening structure.

[0063] Further, such as Figure 6 As shown, the rotating nut seat 4 is in a "Y"-shaped structure, and the ends of the two rods extending from the top of the "Y"-shaped structure are connected to a cylindrical rotating nut seat handle 41, and the other ends of the two rods are connected to a hollow cylindrical connecting plate, and a cylindrical section with an internal threaded hole and an external threaded structure is connected under the connecting plate.

[0064] Further, such as Fig. 9 As shown, the lifting screw mechanism 5 includes:

[0065] A lifting screw handle 51, which is cylindrical and fixed on a connecting head 52; a connecting head 52, which is a combination of a truncated cone and a cylinder, and a hole is provided in the middle of the truncated cone for the lifting screw handle 51 to pass through and be fixed;

[0066] A screw 53, one end of which is connected to the connector 52, and the other end of which is connected to the cone head 54, and the thread style is a T-shaped thread structure with a self-locking function;

[0067] The cone head 54 is a cone-shaped structure, a large end is provided with a limiting structure, and a small end is provided with a mounting hole for mounting the locking screw 24.

[0068] Specifically, Figure 7 — Fig.10 As shown, the hollow part inside the expansion mechanism 2 corresponds to the shape of the cone head 54 of the lifting screw mechanism 5. The expansion mechanism 2 is axially fixed to the cone head 54 of the lifting screw mechanism 5 through the washer 23 and the locking screw 24 to form a cone sleeve expansion mechanism. Under the action of the cone head 54 of the lifting screw mechanism 5, the expansion and contraction functions of the expansion mechanism 2 are realized, thereby realizing the clamping and fixing of the stator of the pump-jet propeller.

[0069] In summary, a more specific embodiment of the present invention is:

[0070] like Figure 1 — Figure 2 As shown, before the disassembly and assembly work begins, the auxiliary disassembly and assembly tool is first connected to the screw hole of the tail section of the underwater vehicle through the screw and the screw mounting hole on the support leg 11; the initial state of the expansion mechanism 2 is the contracted state, and then the expansion mechanism 2 is extended into the disassembly and assembly process hole of the stator by rotating the lifting screw mechanism 5.

[0071] Further, such as Figure 3 As shown, the lifting screw mechanism 5 is rotated so that the cone head 54 of the lifting screw mechanism 5 controls the expansion petal 21 of the expansion mechanism 2 to expand, thereby achieving the clamping and fixing of the stator;

[0072] Furthermore, if Figure 3 As shown, the rotating nut seat 4 is rotated in the reverse direction to realize the pulling action on the stator. After the stator is pulled out, all the screws on the supporting legs 11 are loosened and the auxiliary disassembly and assembly tool is removed.

[0073] Finally, the lifting screw mechanism 5 is rotated in the reverse direction to shrink the expansion mechanism 2 and remove the target stator.

[0074] Finally, it should be understood that the above specific embodiments of the present invention are only used to illustrate or explain the principles of the present invention, and do not constitute a limitation on the present invention. Therefore, any modifications, equivalent substitutions, improvements, etc. made without departing from the spirit and scope of the present invention should be included in the scope of protection of the present invention. In addition, the claims attached to the present invention are intended to cover all changes and modifications that fall within the scope and boundaries of the attached claims, or the equivalent forms of such scope and boundaries.

Claims

1. An auxiliary disassembly and assembly tool for the stator of an underwater vehicle pump-jet propulsion system, characterized in that: It includes: A support bracket (1), the support bracket (1) having a threaded center hole that cooperates with a rotating nut seat (4) to form a threaded pair; An expansion mechanism (2), wherein the expansion mechanism (2) is connected to one end of a lifting screw mechanism (5); A locking member (3), the locking member (3) being mounted on the lifting screw mechanism (5) and being located below a surface of the support bracket (1) close to the expansion mechanism (2); A rotating nut seat (4), wherein the rotating nut seat (4) has a threaded center hole that cooperates with the lifting screw mechanism (5) to form a threaded pair; A lifting screw mechanism (5) passes through the central holes of the rotating nut seat (4) and the supporting bracket (1) and is connected to the rotating nut seat (4) and the supporting bracket (1) through a locking member (3).

2. The auxiliary disassembly and assembly tool for the stator of the underwater vehicle pump-jet propulsion system according to claim 1, characterized in that: The top of the support bracket (1) is a "cross" shaped structure, with a total of four rods, and each rod is connected to an "L" shaped support leg (11).

3. The auxiliary disassembly and assembly tool for the stator of the underwater vehicle pump-jet propulsion system according to claim 2, characterized in that: The supporting leg (11) is provided with a screw mounting hole for fixedly connecting with the aircraft shell.

4. The auxiliary disassembly and assembly tool for the stator of an underwater vehicle pump-jet propulsion system according to claim 1, characterized in that: The expansion mechanism (2) comprises: The expansion flap (21) comprises three expansion flaps, one end of each expansion flap (21) is a three-part hollow cylinder, and the other end is a three-part hollow cylinder with a slightly larger radius and a smaller height, and the higher three-part hollow cylinder has two arc grooves distributed at both ends; A disc spring (22), wherein the disc spring (22) is embedded in the arc groove of the expansion flap (21) to connect the three expansion flaps (21) together; a washer (23), wherein the washer (23) is located between the locking screw (24) and the expansion flap (21); A locking screw (24) passes through the washer (23) and is installed on the other end of the expansion flap (21) corresponding to the three-part hollow truncated cone.

5. The auxiliary disassembly and assembly tool for the stator of an underwater vehicle pump-jet propulsion system according to claim 1, characterized in that: The locking piece (3) is a locking nut, and the locking piece (3) is a double-nut anti-loosening structure.

6. The auxiliary disassembly and assembly tool for the stator of an underwater vehicle pump-jet propulsion system according to claim 1, characterized in that: The rotating nut seat (4) is in a "Y"-shaped structure, and the ends of two rods extending from the top of the "Y"-shaped structure are connected to cylindrical rotating nut seat handles (41), and the other ends of the two rods are connected to a hollow cylindrical connecting plate, and a cylindrical section with an internal thread hole and an external thread structure is connected below the connecting plate.

7. The auxiliary disassembly and assembly tool for the stator of an underwater vehicle pump-jet propulsion system according to claim 1, characterized in that: The lifting screw mechanism (5) comprises: A lifting screw handle (51), wherein the lifting screw handle (51) is cylindrical and fixed on the connecting head (52); A connecting head (52), the connecting head (52) is a combination of a truncated cone and a cylindrical shape, and a hole is provided in the middle of the truncated cone for the lifting screw handle (51) to pass through and be fixed; A screw rod (53), one end of the screw rod (53) is connected to the connector (52), and the other end is connected to the cone head (54), and the thread style is a T-shaped thread structure with a self-locking function; The cone head (54) is a cone-shaped structure, a large end is provided with a limiting structure, and a small end is provided with a mounting hole for mounting a locking screw (24).

8. The auxiliary disassembly and assembly tool for the stator of an underwater vehicle pump-jet propulsion system according to claim 1, characterized in that: The hollow portion inside the expansion mechanism (2) corresponds in shape to the cone head (54) of the lifting screw mechanism (5). The expansion mechanism (2) is axially fixed to the cone head (54) of the lifting screw mechanism (5) through a washer (23) and a locking screw (24) to form a cone sleeve expansion mechanism.

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