Tool for airplane hydraulic plunger pump sliding shoe-swash plate friction wear experiment

Abstract

The utility model discloses a work fixture for a sliding shoe-swash plate friction wear experiment of a hydraulic plunger pump of an airplane, which comprises an oil containing disc, a sliding shoe, a swash plate, a sliding shoe, a swash plate, a sliding shoe, a swash plate, a sliding shoe and a swash plate, and the oil containing disc is internally filled with oil and provides an oil immersion environment required by the experiment; the fixing ring is fixedly connected to the bottom of the inner side of the oil containing disc, a connecting hole is formed in the fixing ring, and a screw rod is connected into the connecting hole; a through rod hole is formed in the side wall of the swash plate sample piece, and the screw rod penetrates through the rod hole and realizes a fixed connection relation between the swash plate sample piece and the fixing ring; the piston shoe sample piece is located at the top of the swash plate sample piece, the piston shoe sample piece is fixed to the transition clamping head, the transition clamping head is provided with a rod shaft connected with an external tester spring clamp, and the tester spring clamp provides rotating force and downward pressure for the piston shoe sample piece. The method is of great significance in studying the piston shoe-swash plate friction wear failure mechanism of the plunger pump and improving the wear resistance of friction pair parts.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the field of aviation hydraulic plunger pump sliding shoe - swash plate friction and wear experiment, concretely relates to a tool fixture for the sliding shoe - swash plate friction and wear experiment of aircraft hydraulic plunger pump. BACKGROUND

[0002] The aviation aircraft hydraulic plunger pump serves in the high temperature and high pressure harsh environment for a long time, and the sliding shoe - swash plate of the key friction pair part in the plunger pump is prone to peeling and wear failure. However, there is no tool fixture for the sliding shoe - swash plate friction and wear experiment research of aircraft hydraulic plunger pump at present, the sliding shoe - swash plate friction and wear operating condition simulation can be realized, the friction pair part wear resistance can not be effectively detected, and the sliding shoe - swash plate friction and wear failure mechanism of the plunger pump can not be researched.

[0003] Therefore, how to provide a tool for the sliding shoe - swash plate friction and wear experiment of aircraft hydraulic plunger pump is a problem to be solved by those skilled in the art. INVENTION CONTENTS

[0004] Therefore, the utility model provides a tool for the sliding shoe - swash plate friction and wear experiment of aircraft hydraulic plunger pump, the friction force load, friction force load frequency and friction relative displacement amplitude between sliding shoe - swash plate can be set arbitrarily, and the demand of the sliding shoe - swash plate friction and wear failure mechanism experiment research of current hydraulic plunger pump is satisfied.

[0005] In order to achieve the above purpose, the utility model adopts the following technical scheme: a tool for the sliding shoe - swash plate friction and wear experiment of aircraft hydraulic plunger pump, which comprises:

[0006] The oil pan is internally filled with oil and provides the oil immersion environment required for the experiment.

[0007] The fixed ring is fixedly connected to the inner bottom of the oil pan, and a connecting hole is arranged on the fixed ring.

[0008] The swash plate sample is fixedly connected to the fixed ring through the screw rod penetrating the rod hole.

[0009] The sliding shoe sample is located on the top of the swash plate sample, and the sliding shoe sample is fixed on the transition clamping head.

[0010] The utility model discloses a beneficial effect is: the oil pan provides the oil immersion condition of sliding shoe - inclined disc friction and wear experiment, owing to the special configuration of inclined disc sample, utilize the horizontal position fixation of fixed ring to inclined disc sample, thereby avoiding the use interference of the upper plane of inclined disc sample to sliding shoe sample, realize the fixation with sliding shoe sample through transition clamping head, and transition clamping head is installed on test instrument spring clamp, can provide the rotating power required for sliding shoe sample experiment, and spring clamp is driven by test instrument rotating end, and when specific experiment, test instrument can exert different friction force load, friction force load frequency and friction relative displacement amplitude to sliding shoe - inclined disc friction and wear working condition through rod shaft, satisfies the test working condition demand.

[0011] Preferably, the bottom of the oil pan is provided with a connecting flange, and the oil pan is fixed with the test instrument clamping table surface through the connecting flange.

[0012] The technical effect produced thereby is that the oil pan is stably installed on the test instrument clamping table surface through the connecting flange, and it should be noted that the oil holding depth of the oil pan needs to meet the immersion condition of the sliding shoe-inclined disc friction pair.

[0013] Preferably, the fixed ring is a square structure, and through holes are arranged at both side ends of the fixed ring, and an adapter seat is arranged at the bottom side of the fixed ring, and the adapter seat is fixedly connected with the oil pan.

[0014] The technical effect produced thereby is that in specific implementation, the inclined disc sample is located at the inner side of the fixed ring, and the fixed ring is fixedly connected with the oil pan through the adapter seat.

[0015] Preferably, the inclined disc sample is a fan-shaped structure, and two rod holes are arranged in parallel on the side wall of the inclined disc sample and close to both end positions, the rod holes are coaxially corresponding with the through holes, and the top surface of the inclined disc sample and the bottom surface of the sliding shoe sample form a friction pair.

[0016] The technical effect produced thereby is that the stable limiting relationship between the inclined disc sample and the fixed ring can be realized through the two screw rods, and the horizontal position clamping is realized.

[0017] Preferably, a embedding groove is arranged at the bottom side of the transition clamping head, a fixing hole is arranged on the side wall of the embedding groove, a screw is connected in the fixing hole, and the sliding shoe sample is adapted to be fitted into the embedding groove and fastened through the screw.

[0018] The technical effect produced thereby is that the embedding groove can quickly realize the installation of the sliding shoe sample, and the stable limiting effect in the radial axial direction can be realized through the cooperation with the screw, and the rotation force can also be effectively transmitted.

[0019] Preferably, a redundant gap is arranged at one side of the transition clamping head corresponding to the embedding groove.

[0020] The technical effect produced by this is that the redundant gap is set due to the size problem of the shoe-shaped piece assembly head, has a larger assembly allowance, realizes the assembly process of a wide range of shoe-shaped pieces, and avoids the problem that the shoe-shaped piece cannot be installed due to manufacturing deviation.

[0021] Preferably, the rod shaft is provided with a flat surface on both sides for facilitating the connection of the spring clamp.

[0022] The technical effect produced by this is that the flat surface is provided on both sides of the rod shaft to meet the clamping and transmission needs considering the quick installation and transmission of the transition clamping head and the spring clamp. BRIEF DESCRIPTION OF DRAWINGS

[0023] Fig. 1 A tool structure diagram for the aircraft hydraulic piston pump shoe-skew plate friction and wear experiment of the utility model;

[0024] Fig. 2 An oil pan and connecting flange structure diagram of the tool for the aircraft hydraulic piston pump shoe-skew plate friction and wear experiment of the utility model;

[0025] Fig. 3 A fixed ring and connection seat structure diagram of the tool for the aircraft hydraulic piston pump shoe-skew plate friction and wear experiment of the utility model;

[0026] Fig. 4 A skew plate sample structure diagram of the tool for the aircraft hydraulic piston pump shoe-skew plate friction and wear experiment of the utility model;

[0027] Fig. 5 A shoe-shaped piece structure diagram of the tool for the aircraft hydraulic piston pump shoe-skew plate friction and wear experiment of the utility model;

[0028] Fig. 6 A transition clamping head structure diagram of the tool for the aircraft hydraulic piston pump shoe-skew plate friction and wear experiment of the utility model.

[0029] 1 oil pan, 2 fixed ring, 3 connecting hole, 4 screw rod, 5 skew plate sample, 6 rod hole, 7 shoe-shaped piece, 8 transition clamping head, 9 rod shaft, 10 connecting flange, 11 connection seat, 12 embedded groove, 13 fixed hole, 14 screw, 15 redundant gap. DETAILED DESCRIPTION

[0030] Clearly and completely describe the technical scheme in the embodiments of the utility model with reference to the drawings in the embodiments of the utility model, obviously, the described embodiments are only a part of the embodiments of the utility model, and not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the ordinary skilled in the art without creative labor belong to the scope of protection of the utility model.

[0031] Refer to the drawings of the utility model Figs. 1 to 6 According to the utility model embodiment, a tool fixture for the friction and wear experiment of the sliding shoe-swash plate of the aircraft hydraulic plunger pump, which comprises:

[0032] The oil pan 1 is internally filled with oil and provides the oil immersion environment required by the experiment.

[0033] The fixed ring 2 is fixedly connected to the inner bottom of the oil pan 1, and the fixed ring 2 is provided with four connecting holes 3, two of which are coaxially corresponding and have a screw rod 4 connected therein, and two screw rods are used.

[0034] The swash plate sample 5 is provided with a through rod hole 6 in the side wall, and the screw rod 4 penetrates the rod hole 6 and realizes the fixed connection relationship between the swash plate sample 5 and the fixed ring 2.

[0035] The sliding shoe sample 7 is located at the top of the swash plate sample 5, and the sliding shoe sample 7 is fixed on the transition clamping head 8, and the transition clamping head 8 is provided with a rod shaft 9 connected with the external tester spring clamp, and the tester spring clamp provides the rotating force and the downward pressure of the sliding shoe sample, and according to different test needs, the downward pressure and the rotating speed of the tester spring clamp can be adjusted.

[0036] In other embodiments, the bottom outer periphery of the oil pan 1 is provided with a connecting flange 10, and the oil pan 1 is fixed with the external tester clamping table surface through the connecting flange 10, and the connecting flange can be connected by using bolts or screws.

[0037] In some specific embodiments, the fixed ring 2 is a square structure, and the fixed ring 2 is provided with four through connecting holes 3 corresponding to the two side ends, and the bottom side of the fixed ring 2 is provided with a connecting seat 11, which is fixedly connected with the oil pan 1 by screws, and the oil pan is provided with necessary screw blind holes.

[0038] In other embodiments, the swash plate sample 5 is a fan-shaped structure, and two rod holes are parallelly arranged on the side wall of the swash plate sample 5 and close to the two edge ends, the rod hole 6 is coaxially corresponding to the connecting hole 3, and the top surface of the swash plate sample 5 and the bottom surface of the sliding shoe sample 7 form a friction pair.

[0039] In some other embodiments, the bottom side of the transition clamping head 8 is provided with a matching groove 12, and the side wall of the matching groove 12 is circumferentially provided with three fixing holes 13, and the fixing holes 13 are connected with screws 14, and the slide shoe-like piece 7 is adapted to be fitted into the matching groove 12 and fastened by the screws.

[0040] In some other embodiments, the transition clamping head 8 is provided with a redundant gap 15 on one side corresponding to the matching groove 12, which facilitates the connection of the slide shoe-like piece and can also avoid the situation that the slide shoe-like piece cannot be assembled due to manufacturing deviation.

[0041] In some other embodiments, the two sides of the rod shaft 9 are provided with flat surfaces for facilitating the connection of the spring clamp, which facilitates the transmission and connection of the transition clamping head and the spring clamp of the tester.

[0042] The specific working principle is as follows:

[0043] First, the connecting flange on the oil pan is fixed on the clamping table of the comprehensive tester by four screws, and the oil pan can provide the oil immersion environment required for the slide shoe-inclined disc friction and wear experiment; then, the adapter seat is fixed in the oil pan by four screws, and the inclined disc sample is fixed on the fixed ring by two screw rods to prevent loosening during the experiment; then, the slide shoe sample is fixed on the transition clamping head by three screws, and the matching of the matching groove and the screw prevents the slide shoe sample from loosening during the experiment; finally, the rod shaft on the transition clamping head is fixed on the spring clamp of the tester, and the tester can apply different friction force load, friction force load frequency and friction relative displacement amplitude to the slide shoe-inclined disc friction and wear working condition through the rod shaft, which meets the test working condition requirements.

[0044] The product solves the loading problem of friction force load, friction force load frequency and friction relative displacement amplitude in the experiment of the aircraft hydraulic piston pump slide shoe-inclined disc friction and wear. It is of great significance for studying the friction and wear failure mechanism of the piston pump slide shoe-inclined disc and improving the anti-wear performance of the friction pair parts.

[0045] It should be noted that the inclined disc sample and the slide shoe sample are not limited to the aviation hydraulic piston pump slide shoe-inclined disc, and all slide shoe-inclined disc similar structure friction and wear experiments can be tested by using the device.

[0046] For the device and use method disclosed in the embodiments, since they correspond to the method disclosed in the embodiments, the description is relatively simple, and the relevant part is described in the method part.

[0047] The above description of disclosed embodiments enables one of ordinary skill in the art to make or use the application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein can be applied to other embodiments without departing from the spirit or scope of the application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A tooling for testing the friction and wear of a hydraulic piston pump's slipper and swashplate in an aircraft, characterized in that, include: An oil tray (1) is filled with oil and provides the oil immersion environment required for the experiment. A fixing ring (2) is fixedly connected to the bottom inner side of the oil tray (1). The fixing ring (2) is provided with a connecting hole (3), and a screw (4) is connected in the connecting hole (3). The swash plate sample (5) has a through rod hole (6) on its side wall. The screw (4) passes through the rod hole (6) and realizes the fixed connection between the swash plate sample (5) and the fixing ring (2). The slipper sample (7) is located on top of the swashplate sample (5). The slipper sample (7) is fixed on the transition clamping head (8). The transition clamping head (8) is provided with a rod shaft (9) connected to the external tester spring clamp. The tester spring clamp provides the rotational force and downward pressure of the slipper sample.

2. The tooling for testing the friction and wear of a hydraulic piston pump slide shoe-swashplate in an aircraft according to claim 1, characterized in that, The bottom outer periphery of the oil tray (1) is provided with a connecting flange (10), and the oil tray (1) is fixed to the external testing instrument clamping table through the connecting flange (10).

3. The tooling for testing the friction and wear of a hydraulic piston pump slide shoe-swashplate in an aircraft according to claim 1, characterized in that, The fixing ring (2) has a square structure. The two sides of the fixing ring (2) are provided with through connecting holes (3). The bottom side of the fixing ring (2) is provided with a connecting seat (11). The connecting seat (11) is fixedly connected to the oil tray (1).

4. The tooling for testing the friction and wear of a hydraulic piston pump slide shoe-swashplate in an aircraft according to claim 3, characterized in that, The swash plate sample (5) has a fan-shaped structure. Two rod holes are provided parallel to each other on the side wall of the swash plate sample (5) near the two ends. The rod holes (6) are coaxially corresponding to the connecting holes (3). The top surface of the swash plate sample (5) and the bottom surface of the slipper sample (7) form a friction pair.

5. The tooling for testing the friction and wear of a hydraulic piston pump slide shoe-swashplate in an aircraft according to claim 1, characterized in that, The bottom side of the transition clamping head (8) is provided with a fitting groove (12), and the side wall of the fitting groove (12) is provided with a fixing hole (13). A screw (14) is connected in the fixing hole (13). The slipper sample (7) is fitted into the fitting groove (12) and fastened by the screw.

6. The tooling for testing the friction and wear of a hydraulic piston pump slide shoe-swashplate in an aircraft according to claim 5, characterized in that, The transition clamping head (8) has a redundant notch (15) on one side of the corresponding insertion groove (12).

7. The tooling for testing the friction and wear of a hydraulic piston pump slide shoe-swashplate according to claim 1, characterized in that, The rod shaft (9) has cut surfaces on both sides to facilitate connection with spring clamps.

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