Crankshaft balance testing device

Abstract

The utility model discloses a crankshaft balance testing device, which belongs to the technical field of crankshaft balance testing and comprises a dynamic balancing instrument, a fixed seat and a movable seat, the fixed seat and the movable seat are arranged on two sides of the top end face of the dynamic balancing instrument, and a crankshaft body is arranged above the dynamic balancing instrument. A sliding mechanism used for driving the moving seat is installed at one end of the dynamic balancing instrument, a supporting shaft and a mounting shaft are fixed to the two ends of the crankshaft body respectively, a key groove is formed in the top end of the mounting shaft, a rotating piece is installed on the side wall of the moving seat through a bearing, and a hexagon socket screw embedded in the key groove is installed on the outer wall of the rotating piece; according to the crankshaft balance testing device, the inside hexagonal bolt is screwed and inserted into the key groove, so that the rotating part and the mounting shaft on the crankshaft main body are axially positioned, the rotating crankshaft main body is axially positioned conveniently, and the situation that a crankshaft slides in the rotating process to influence the stable operation of a dynamic balance test is avoided.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of crankshaft balance test, specifically relates to a crankshaft balance test device. BACKGROUND

[0002] The crankshaft is the most important component in the engine, it bears the force from the connecting rod, and changes it into torque through the crankshaft output and drives other accessories on the engine to work, and the crankshaft is balanced after production.

[0003] The patent with the application number 202421382570.7 discloses a kind of crankshaft dynamic balance test device, comprising: dynamic balance instrument and test component;The test component is set on the dynamic balance instrument, the test component includes the fixed mechanism set on the dynamic balance instrument, the adjusting mechanism installed on the fixed mechanism and the test mechanism connected to the bottom of the adjusting mechanism.

[0004] The above-mentioned crankshaft dynamic balance test device uses the load head provided with material insertion hole to support the crankshaft, however, in the process of rotating the load head driven by motor, only the friction force of load head support drives the crankshaft to rotate, the crankshaft is affected by gravity and will slide in material insertion hole, causing the crankshaft to be difficult to rotate smoothly in dynamic balance test. UTILITY MODEL CONTENTS

[0005] (1) technical problem to be solved

[0006] In view of the deficiencies of prior art, the purpose of the utility model is to provide a kind of crankshaft balance test device, which aims at solving the technical problem that only the friction force of load head support drives the crankshaft to rotate in prior art, the crankshaft is affected by gravity and will slide in material insertion hole, causing the crankshaft to be difficult to rotate smoothly in dynamic balance test.

[0007] (2) technical scheme

[0008] In order to solve the above technical problems, the utility model provides a kind of crankshaft balance test device, which comprises dynamic balance instrument and fixed seat and moving seat set on the top end face of dynamic balance instrument, the dynamic balance instrument is provided with crankshaft main body above, and the one end of dynamic balance instrument is installed with sliding mechanism for driving moving seat, the both ends of crankshaft main body are respectively fixed with support shaft and mounting shaft, the top end of mounting shaft is provided with keyway, the side wall of moving seat is installed with rotating piece through bearing, the outer wall of rotating piece is installed with internal hexagon bolt embedded in keyway.

[0009] When the technical scheme is used, the fixed seat and the moving seat are arranged on the two sides of the top end surface of the dynamic balancing instrument, the first motor drives the screw rod to rotate, and the sliding part drives the moving seat to move in the rotating process, the support shaft and the mounting shaft at the two ends of the crankshaft body are respectively inserted into the support hole and the accommodating groove, the first motor drives the moving seat to adjust the distance between the moving seat and the fixed seat, and the balancing test positioning of the crankshaft bodies with different lengths is suitable; the internal hexagonal bolt is threadedly inserted into the screw hole in the outer wall of the rotating part, the mounting shaft is inserted into the accommodating hole, the internal hexagonal bolt is tightened, the bottom of the internal hexagonal bolt is inserted into the key groove, and therefore the rotating part and the mounting shaft on the crankshaft body are axially positioned, the rotating crankshaft body is axially positioned, and the sliding of the crankshaft in the rotating process is avoided, and the stable dynamic balancing test is ensured.

[0010] Preferably, the top end of the dynamic balancing instrument is provided with a control panel, and the dynamic balancing instrument body is provided with a sliding groove.

[0011] Further, the top end of the fixed seat is provided with a support hole, and the support shaft is inserted into the support hole.

[0012] Further, the side wall of the moving seat is fixedly provided with a second motor connected with the rotating part, and the side wall of the rotating part is provided with an accommodating groove.

[0013] Further, the outer wall of the rotating part is provided with a screw hole, the internal hexagonal bolt is threadedly inserted into the screw hole, and the mounting shaft is inserted into the accommodating groove.

[0014] Further, the sliding mechanism comprises a sliding part inserted into the sliding groove and a screw rod inserted into the sliding part in a threaded mode, and the bottom end of the moving seat is fixedly connected with the sliding part.

[0015] Further, the side wall of the dynamic balancing instrument is fixedly provided with a first motor connected with the screw rod, and the two ends of the screw rod are rotatably inserted into the inner wall of the sliding groove through bearings.

[0016] (3) Beneficial effects

[0017] Compared with the prior art, the beneficial effects of the utility model lie in that:

[0018] The utility model discloses a dynamic balancing instrument, which comprises a dynamic balancing instrument body, a fixed seat and a moving seat.

[0019] The inner hexagonal bolt is screwed in the screw hole of the outer wall of the rotating part, after the mounting shaft is inserted into the accommodating hole, the inner hexagonal bolt is tightened to make the bottom thereof inserted into the key groove, so that the rotating part and the mounting shaft on the crankshaft body are axially positioned, the rotating crankshaft body is axially positioned, and the sliding of the crankshaft in the rotating process is avoided, so that the stable dynamic balance test is ensured. BRIEF DESCRIPTION OF DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments or the prior art description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0021] Figure 1 It is a structural schematic view of the present application;

[0022] Figure 2 It is a front view of the crusher in the present application;

[0023] Figure 3 It is a front view of the heat conducting oil heater in the present application;

[0024] Figure 4 It is a structural schematic view of the present application Figure 1 enlarged view of the structure at A in the present application.

[0025] The marks in the drawings are: 1, dynamic balance instrument; 2, sliding groove; 3, control panel; 4, fixed seat; 5, supporting hole; 6, crankshaft body; 7, moving seat; 8, supporting shaft; 9, mounting shaft; 10, key groove; 11, first motor; 12, sliding part; 13, rotating part; 14, screw rod; 15, accommodating groove; 16, second motor; 17, screw hole; 18, inner hexagonal bolt. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the present application will be described clearly and completely in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are only some embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all the other embodiments obtained by those skilled in the art without creative labor are within the protection scope of the present application.

[0027] The present detailed description is a crankshaft balance testing device, and a structural schematic view thereof is as Figure 1 and Figure 2As shown, the crankshaft balancing test device comprises a dynamic balancing machine 1, a fixed seat 4 and a moving seat 7 arranged on both sides of the top end face of the dynamic balancing machine 1, a crankshaft body 6 arranged above the dynamic balancing machine 1, a sliding mechanism for driving the moving seat 7 installed at one end of the dynamic balancing machine 1, a support shaft 8 and an installation shaft 9 fixed at both ends of the crankshaft body 6 respectively, a key groove 10 opened at the top end of the installation shaft 9, a rotating piece 13 installed on the side wall of the moving seat 7 through a bearing, an inner hexagonal bolt 18 installed in the key groove 10 on the outer wall of the rotating piece 13, and the dynamic balancing machine 1 and the control panel 3 connected thereto are existing products, and the control mode and test principle are prior art, which will not be described here.

[0028] The top end of the dynamic balancing machine 1 is provided with a control panel 3, and a sliding groove 2 is opened in the main body of the dynamic balancing machine 1. The top end of the fixed seat 4 is provided with a support hole 5, the support shaft 8 is fitted and inserted into the support hole 5, the side wall of the moving seat 7 is fixed with a second motor 16 connected with the rotating piece 13, the side wall of the rotating piece 13 is provided with a containing groove 15, the crankshaft body 6 is placed between the fixed seat 4 and the moving seat 7 by using a hoisting mechanism, the first motor 11 is started to drive the screw rod 14 to rotate, and in the process of rotation, the sliding part 12 drives the moving seat 7 to move, so that the support shaft 8 and the installation shaft 9 at both ends of the crankshaft body 6 are respectively fitted and inserted into the support hole 5 and the containing groove 15, the first motor 11 drives the moving seat 7 to adjust the distance between the moving seat 7 and the fixed seat 4, and the balancing test positioning of the crankshaft body 6 with different lengths is suitable.

[0029] As shown in Figure 3 and Figure 4 , a screw hole 17 is opened in the outer wall of the rotating piece 13, the inner hexagonal bolt 18 is threadedly inserted into the screw hole 17, the installation shaft 9 is fitted and inserted into the containing groove 15, the sliding mechanism comprises a sliding part 12 fitted and inserted into the sliding groove 2 and a screw rod 14 threadedly inserted into the sliding part 12, the bottom end of the moving seat 7 is fixedly connected with the sliding part 12, the side wall of the dynamic balancing machine 1 is fixed with a first motor 11 connected with the screw rod 14, both ends of the screw rod 14 are rotatably inserted into the inner wall of the sliding groove 2 through bearings, after the installation shaft 9 is inserted into the containing hole, the inner hexagonal bolt 18 is tightened so that the bottom end thereof is inserted into the key groove 10, so that the rotating piece 13 and the installation shaft 9 on the crankshaft body 6 are axially positioned, and the rotating crankshaft body 6 is axially positioned.

[0030] Working principle: when the device of the technical scheme is used, the crankshaft body 6 is checked: before dynamic balancing test, the crankshaft body 6 needs to be checked comprehensively to ensure that it has no obvious damage, cracks, deformation or other defects.

[0031] The crankshaft body 6 is cleaned: the oil stains, dust, iron filings and other impurities on the surface of the crankshaft body 6 are cleaned to ensure the accuracy of the test.

[0032] Install the crankshaft body 6: Install the crankshaft body 6 on the support device of the dynamic balancing instrument 1, ensure that it is firmly and correctly positioned, and the axis of the crankshaft body 6 should coincide with the rotation axis of the dynamic balancing instrument 1.

[0033] Test process

[0034] Start the dynamic balancing instrument 1: Start the dynamic balancing instrument 1 and initialize the settings according to the operation interface of the device, including inputting the relevant parameters of the crankshaft body 6, such as length, diameter, mass, etc.

[0035] Low-speed balance test: First, drive the crankshaft body 6 to rotate at a lower speed, and let the dynamic balancing instrument 1 perform preliminary balance detection on the crankshaft body 6. At this time, the dynamic balancing instrument 1 will detect the vibration of the crankshaft body 6 through the sensor and transmit the data to the control system.

[0036] High-speed balance test: On the basis of the low-speed balance test, gradually increase the rotational speed of the crankshaft body 6 and perform high-speed balance test. High-speed test can more accurately reflect the balance condition of the crankshaft body 6 in the actual working state, because the unbalanced torque generated by the crankshaft body 6 when rotating at high speed is more obvious.

[0037] Data analysis and adjustment: The dynamic balancing instrument 1 will calculate the unbalance amount and its position of the crankshaft body 6 according to the detected vibration data and display it on the display screen. According to these data, the operator can judge whether the crankshaft body 6 needs to be balanced and adjusted. If the crankshaft body 6 is unbalanced, it needs to be removed or added weight at the corresponding position of the crankshaft body 6 according to the instructions of the dynamic balancing instrument 1, such as punching, welding balance block, etc. After adjustment, start the dynamic balancing instrument 1 again for testing until the crankshaft body 6 meets the balance requirements.

[0038] All technical features in this embodiment can be freely combined according to actual needs.

[0039] Finally, it should be noted that the above description is only a preferred embodiment of the present application and is not intended to limit the present application. Although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent replacements to some technical features. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A crankshaft balancing testing device, comprising a dynamic balancing instrument (1) and a fixed base (4) and a movable base (7) disposed on both sides of the top surface of the dynamic balancing instrument (1), characterized in that, A crankshaft body (6) is provided above the dynamic balancing instrument (1), and a sliding mechanism for driving the moving seat (7) is installed at one end of the dynamic balancing instrument (1). A support shaft (8) and a mounting shaft (9) are fixed at both ends of the crankshaft body (6). A keyway (10) is provided at the top end of the mounting shaft (9). A rotating part (13) is installed on the side wall of the moving seat (7) through a bearing. An internal hexagon bolt (18) embedded in the keyway (10) is installed on the outer wall of the rotating part (13).

2. The crankshaft balancing testing device according to claim 1, characterized in that, The top of the dynamic balancing instrument (1) is equipped with a control panel (3), and a sliding groove (2) is provided on the main body of the dynamic balancing instrument (1).

3. The crankshaft balancing testing device according to claim 2, characterized in that, The top of the fixed base (4) is provided with a support hole (5), and the support shaft (8) is inserted into the support hole (5).

4. The crankshaft balancing testing device according to claim 3, characterized in that, The side wall of the movable seat (7) is fixed with a second motor (16) connected to the rotating component (13), and the side wall of the rotating component (13) is provided with a receiving groove (15).

5. The crankshaft balancing testing device according to claim 4, characterized in that, The outer wall of the rotating part (13) is provided with a screw hole (17), the internal hex bolt (18) is threaded into the screw hole (17), and the mounting shaft (9) is fitted into the receiving groove (15).

6. The crankshaft balancing testing device according to claim 2, characterized in that, The sliding mechanism includes a sliding part (12) that fits into the sliding groove (2) and a lead screw (14) that is threaded into the sliding part (12). The bottom end of the moving seat (7) is fixedly connected to the sliding part (12).

7. The crankshaft balancing testing device according to claim 6, characterized in that, The side wall of the dynamic balancing instrument (1) is fixed with a first motor (11) connected to the lead screw (14), and both ends of the lead screw (14) are rotatably inserted into the inner wall of the slide groove (2) through bearings.

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