Auxiliary device for testing noise of automobile flywheel

Abstract

The utility model discloses an automobile flywheel noise test auxiliary device, which relates to the technical field of automobile testing, and comprises a base, a shell is connected above the base, a lifting plate is slidably connected inside the shell, an L-shaped rod is connected above the lifting plate, one end of the L-shaped rod is connected with a sound insulation cover, and the other end of the L-shaped rod is connected with a motor. A noise detector is connected to the inner wall of the sound insulation cover, a sound insulation soft cover is connected to the front side of the sound insulation cover, a sleeve is connected to the front side of the sound insulation soft cover, and four rotary knobs are rotated at the same time to drive a screw to rotate, so that the sleeve is conveniently driven to move forwards, the sound insulation soft cover between the sleeve and the sound insulation cover is conveniently stretched, and the sound insulation effect is improved. The volume between the sleeve and the sound insulation cover can be expanded, the flywheel with thicker thickness can be conveniently accommodated, the influence of external noise can be reduced, and the problems that the flywheel with thicker thickness is difficult to cover by the fixed frame, the influence of the external noise is larger, and the test effect is easily influenced are solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a car test technical field especially relates to a kind of car flywheel noise test auxiliary equipment. BACKGROUND

[0002] Flywheel is an important component in automobile engine, it is a circular metal disc, one side is connected to engine crankshaft, the other side is connected to clutch or automatic transmission, however, flywheel can produce certain noise when running, this sound is particularly clear and regular when engine is in idle state, with the increase of engine speed, this noise will increase rapidly, especially in the area above cylinder head, noise will become particularly prominent, which can affect the ride comfort and overall performance of vehicle, therefore, it is necessary to test flywheel noise, in order to facilitate the test of flywheel, test auxiliary equipment is needed.

[0003] Chinese patent discloses a kind of car flywheel noise tester (announcement number CN221667091U), the patent technology is by starting cylinder to push the bottom interval of scissor type connecting rod contraction, so that scissor type connecting rod drives the fixed frame in the upper direction to rise and fall, and push out slide bar, so that positioning head inserts flywheel center and is positioned, prevent fixed frame inboard noise detection equipment from contacting flywheel when fixed frame is close to flywheel, so as to avoid equipment damage, but the structure size of fixed frame is fixed, it is difficult to adjust, for some flywheel with relatively thick thickness, fixed frame is difficult to cover flywheel, resulting in greater influence of external noise, easy to affect test effect. UTILITY MODEL CONTENT

[0004] In view of the deficiencies of prior art, the utility model provides a kind of car flywheel noise test auxiliary equipment, solve the problems raised in the above background art.

[0005] To achieve the above object, the utility model is realized by the following technical scheme: a kind of car flywheel noise test auxiliary equipment, including base, the upper side of the base is connected with shell, the inside of the shell is slidably connected with lifting plate, the upper side of the lifting plate is connected with L-shaped rod, one end of the L-shaped rod is connected with soundproof cover, the inner wall of the soundproof cover is connected with noise detector, the outer side of the soundproof cover is connected with four telescopic mechanisms in ring, the front side of the soundproof cover is connected with soundproof soft cover, the front side of the soundproof soft cover is connected with sleeve.

[0006] As a further technical scheme of the utility model, the telescopic mechanism includes bearing seat and sleeve, the bottom of the bearing seat is fixedly connected with sleeve, the bottom of the sleeve is fixedly connected with soundproof cover, the inside of the sleeve is provided with screw groove, the inside of the screw groove is screw-connected with screw rod, one end of the screw rod is connected with knob, the other end of the screw rod is rotatably connected with bearing seat.

[0007] As a further technical scheme of the utility model, the left side of the shell is provided with a through hole, a servo motor is connected to the position close to the through hole on the outer side of the shell, and one end of the output shaft of the servo motor is connected with a gear.

[0008] As a further technical scheme of the utility model, the left side of the lifting plate is provided with a gear slot, and the outer edge of the gear extends to the inside of the through hole and is connected in meshing with the gear slot.

[0009] As a further technical scheme of the utility model, the sound insulation soft cover is made of polyvinyl alcohol material.

[0010] As a further technical scheme of the utility model, the bottom of the base is connected with four universal wheels.

[0011] As a further technical scheme of the utility model, the inner diameter of the sound insulation cover is consistent with the inner diameter of the sleeve.

[0012] The utility model provides a kind of automobile flywheel noise test auxiliary equipment, and compared with prior art has following beneficial effects:

[0013] 1, the automobile flywheel noise test auxiliary equipment of the design, by rotating four knobs simultaneously, drive screw rotation, by the connection between screw and screw groove, it is convenient to drive the sleeve connected with the rotation end of screw to move forward, it is convenient to stretch the sound insulation soft cover between sleeve and sound insulation cover, it is advantageous to expand the volume between sleeve and sound insulation cover, it is convenient to accommodate some flywheels with relatively thick thickness, it is advantageous to reduce the influence from external noise, solve the problem that fixed frame is difficult to cover flywheel for some flywheels with relatively thick thickness, leading to the influence of external noise is larger, easily affect test effect.

[0014] 2, the automobile flywheel noise test auxiliary equipment of the design, by starting servo motor, drive gear rotation, by the connection between gear and gear slot, it is convenient to drive lifting plate to lift, and then it is convenient to adjust the height of sleeve and sound insulation cover, it is advantageous to adapt to the test of different height generator flywheel. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is one of automobile flywheel noise test auxiliary equipment overall structure schematic view;

[0016] Figure 2 It is the second one of automobile flywheel noise test auxiliary equipment overall structure schematic view;

[0017] Figure 3 It is the overall structure schematic view of sleeve, sound insulation soft cover and sound insulation cover in the automobile flywheel noise test auxiliary equipment;

[0018] Figure 4 It is an exploded view of a shell and lifting plate of an automobile flywheel noise test auxiliary device.

[0019] In the figure: 1, noise detector; 2, sleeve; 3, sound insulation cover; 4, sound insulation cover; 5, gear; 6, servo motor; 7, shell; 8, base; 9, universal wheel; 10, lifting plate; 11, bearing seat; 12, screw; 13, knob; 14, L-shaped rod; 15, sleeve; 16, threaded groove; 17, tooth groove; 18, through hole. DETAILED DESCRIPTION

[0020] The technical scheme in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0021] Please refer to Figures 1-4 The utility model provides a kind of automobile flywheel noise test auxiliary device technical scheme: including base 8, the upper portion of base 8 is connected with shell 7, the inside of shell 7 is slidably connected with lifting plate 10, the upper portion of lifting plate 10 is connected with L-shaped rod 14, one end of L-shaped rod 14 is connected with sound insulation cover 4, the inner wall of sound insulation cover 4 is connected with noise detector 1, the outside of sound insulation cover 4 is connected with four telescopic mechanisms in ring, the front side of sound insulation cover 4 is connected with sound insulation cover 3, the front side of sound insulation cover 3 is connected with sleeve 2, after flywheel is covered by sleeve 2 and sound insulation cover 4, by noise detector 1, it is convenient to carry out noise test to flywheel after starting.

[0022] As Figures 1 to 3 Shown, telescopic mechanism includes bearing seat 11 and sleeve 15, the bottom of bearing seat 11 is fixedly connected with sleeve 2, the bottom of sleeve 15 is fixedly connected with sound insulation cover 4, threaded groove 16 is formed in the inside of sleeve 15, screw 12 is screwedly connected in the inside of threaded groove 16, one end of screw 12 is connected with knob 13, the other end of screw 12 is rotatably connected with bearing seat 11, for some thick flywheel, first by rotating four knobs 13 simultaneously, screw 12 is rotated, by the connection between screw 12 and threaded groove 16, it is convenient to drive sleeve 2 rotatably connected at the end of screw 12 to move forward, it is convenient to stretch sound insulation cover 3 between sleeve 2 and sound insulation cover 4, it is favorable to expand the volume between sleeve 2 and sound insulation cover 4, it is convenient to accommodate some thick flywheel, cover some thick flywheel, it is favorable to reduce the influence from external noise.

[0023] As Figure 4As shown, the left side of the shell 7 is provided with a through hole 18, the outer side of the shell 7 is connected with a servo motor 6 near the through hole 18, one end of the output shaft of the servo motor 6 is connected with a gear 5, by starting the servo motor 6, the gear 5 is driven to rotate, through the connection between the gear 5 and the gear slot 17, the lifting plate 10 is conveniently driven to lift, thereby conveniently adjusting the height of the sleeve 2 and the sound shield cover 4, and the sound shield cover 4 is conveniently moved to the height of the flywheel.

[0024] As shown in the figure, Figure 4 The left side of the lifting plate 10 is provided with a gear slot 17, the outer edge of the gear 5 extends to the inside of the through hole 18 and is engaged with the gear slot 17, through the connection between the gear 5 and the gear slot 17, the lifting plate 10 is conveniently driven to lift.

[0025] As shown in the figure, Figures 1 to 3 The sound shield cover 3 is made of polyvinyl alcohol material, the polyvinyl alcohol material has the characteristics of lightness, softness, durability and long service life, and the sound shield cover 3 is convenient to fold.

[0026] As shown in the figure, Figure 1 The lower side of the base 8 is connected with four universal wheels 9, which is convenient to improve the flexibility of the base 8 and facilitate movement.

[0027] As shown in the figure, Figures 1 to 3 The inner diameter of the sound shield cover 4 is consistent with the inner diameter of the sleeve 2, which is conducive to the flywheel being able to enter the inside of the sound shield cover 4 and the sleeve 2.

[0028] The working principle of the utility model is as follows: by starting the servo motor 6, the gear 5 is driven to rotate, through the connection between the gear 5 and the gear slot 17, the lifting plate 10 is conveniently driven to lift, thereby conveniently adjusting the height of the sleeve 2 and the sound shield cover 4, conveniently moving the sound shield cover 4 to the height of the flywheel, then pushing the base 8, covering the flywheel with the sound shield cover 4, and testing the noise generated by the flywheel through the noise detector 1, when the flywheel thickness is relatively thick, by rotating the four knobs 13 at the same time, the screw rod 12 is driven to rotate, through the connection between the screw rod 12 and the screw groove 16, the sleeve 2 at the end of the screw rod 12 rotatingly connected is conveniently moved forward, the sound shield cover 3 between the sleeve 2 and the sound shield cover 4 is conveniently stretched, which is conducive to expanding the volume between the sleeve 2 and the sound shield cover 4, conveniently accommodating some flywheels with relatively thick thickness, and conducive to reducing the influence of external noise.

[0029] The above is only the preferred embodiment of the utility model, it should be pointed out that for ordinary skilled person in the art, without departing from the principle of the utility model, a number of improvements and refinements can be made, these improvements and refinements should be regarded as the protection scope of the utility model. The structures, devices and operation methods not specifically described and explained in the utility model, such as no special description and limitation, are implemented according to the conventional means in the field.

Claims

1. An auxiliary device for testing automobile flywheel noise, characterized in that, Includes a base (8), with a housing (7) connected above the base (8), a lifting plate (10) slidably connected inside the housing (7), an L-shaped rod (14) connected above the lifting plate (10), a soundproof cover (4) connected to one end of the L-shaped rod (14), a noise detector (1) connected to the inner wall of the soundproof cover (4), four telescopic mechanisms connected circumferentially to the outer side of the soundproof cover (4), a soundproof soft cover (3) connected to the front side of the soundproof cover (4), and a sleeve (2) connected to the front side of the soundproof soft cover (3).

2. The auxiliary device for testing automobile flywheel noise according to claim 1, characterized in that, The telescopic mechanism includes a bearing seat (11) and a sleeve (15). The bottom of the bearing seat (11) is fixedly connected to the sleeve (2), and the bottom of the sleeve (15) is fixedly connected to the soundproof cover (4). A threaded groove (16) is provided inside the sleeve (15). A screw (12) is threaded inside the threaded groove (16). A knob (13) is connected to one end of the screw (12), and the other end of the screw (12) is rotatably connected to the bearing seat (11).

3. The auxiliary device for testing automobile flywheel noise according to claim 1, characterized in that, A through hole (18) is provided on the left side of the outer casing (7). A servo motor (6) is connected to the outer side of the outer casing (7) near the through hole (18). A gear (5) is connected to one end of the output shaft of the servo motor (6).

4. The auxiliary device for testing automobile flywheel noise according to claim 3, characterized in that, The lifting plate (10) has a toothed groove (17) on its left side, and the outer edge of the gear (5) extends into the interior of the through hole (18) and meshes with the toothed groove (17).

5. The auxiliary device for testing automobile flywheel noise according to claim 1, characterized in that, The soundproof soft cover (3) is made of polyvinyl alcohol.

6. The auxiliary device for testing automobile flywheel noise according to claim 1, characterized in that, Four casters (9) are connected to the bottom of the base (8).

7. The auxiliary device for testing automobile flywheel noise according to claim 1, characterized in that, The inner diameter of the soundproof cover (4) is the same as the inner diameter of the sleeve (2).

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