Crankshaft dynamic balance testing device

Abstract

The utility model belongs to the technical field of balance testing devices, and particularly relates to a crankshaft dynamic balance testing device which comprises a dynamic balancing instrument and a testing assembly. And the test assembly is arranged on the dynamic balancing instrument. According to the utility model, through the test assembly, the crankshaft can be fixed by using the fixing mechanism, then the position of the compression roller is adjusted by using the adjusting mechanism, the compression roller is controlled to be pressed on the crankshaft, and the crankshaft is further fixed by using the compression roller, and when the motor drives the crankshaft to rotate, vibration data of the crankshaft during rotation can be transmitted to the vibration probe through the compression roller; according to the scheme, the rotating crankshaft can be detected only by inserting the crankshaft into the material inserting hole and then matching with pressing and fixing of the pressing roller, the detection accuracy is improved, the detection efficiency is improved, the detection cost is reduced, and the detection efficiency is improved. Damage to the crankshaft caused by fixing errors at the two ends is effectively avoided, and practicability is high.

Description

Technical Field

[0001] The utility model relates to the technical field of balance test devices, in particular to a crankshaft dynamic balance test device. Background Art

[0002] The inspection equipment of the crankshaft of the combustion engine is the most important component in the engine. It bears the force transmitted from the connecting rod and converts it into torque, which is output through the crankshaft and drives other accessories on the engine to work.

[0003] The existing crankshaft dynamic balancing test device generally fixes the two ends of the crankshaft on the dynamic balancing instrument first, and then drives the crankshaft to rotate, and then performs detection in conjunction with vibration detection equipment. However, it is easy to obtain inaccurate data in the case of positioning error if the two ends are fixed in advance. If the error is too large, it may even damage the crankshaft during rotation. Therefore, we propose a crankshaft dynamic balancing test device. Utility Model Content

[0004] The utility model aims to solve one of the technical problems existing in the prior art or related technology.

[0005] To this end, the technical solution adopted in this utility model is:

[0006] A crankshaft dynamic balancing test device, comprising: a dynamic balancing instrument and a test assembly; the test assembly is arranged on the dynamic balancing instrument; the test assembly comprises a fixing mechanism arranged on the dynamic balancing instrument, an adjusting mechanism installed on the fixing mechanism and a test mechanism connected to the bottom of the adjusting mechanism; the test mechanism comprises a mounting frame installed at the bottom of the adjusting mechanism, a gas rod 1 fixed in the mounting frame, a guide plate connected to both ends of the gas rod 1, a mounting plate fixed on the guide plate, a gas rod 2 installed on the mounting plate, a pressure sensor fixed to the bottom end of the gas rod 2, a vibration probe connected to the bottom of the pressure sensor and a pressure roller installed at the bottom of the vibration probe.

[0007] In a preferred example, the utility model can be further configured as follows: the fixing mechanism includes an electric push rod embedded in the dynamic balancing instrument, a movable frame fixed to the driving end of the electric push rod, a rotating disk installed on the movable frame, a fixed frame installed on the side of the dynamic balancing instrument, a motor fixed on the fixed frame, a loading head respectively fixed to the motor and the rotating disk, and an insertion hole opened on the loading head.

[0008] In a preferred example, the utility model can be further configured as follows: an anti-slip pad is provided on the inner side of the material insertion hole.

[0009] In a preferred example, the utility model can be further configured as follows: the adjustment mechanism includes a telescopic rod installed between the movable frame and the fixed frame, an adjustment frame sleeved on the telescopic rod, a positioning rod inserted on the adjustment frame, a positioning hole opened on the telescopic rod for the positioning rod to be inserted, an air rod three connected to the bottom of the adjustment frame, a mounting seat fixed to the bottom of the air rod three, and an air pump group installed in the mounting seat.

[0010] In a preferred example, the present invention can be further configured as follows: a protective sleeve is connected between the positioning rod and the adjustment frame.

[0011] In a preferred example, the utility model can be further configured as follows: the gas rod one, the gas rod two and the gas rod three are all connected to the air pump group through pipelines.

[0012] The above technical solution of the utility model has the following beneficial technical effects:

[0013] 1. The utility model can fix the crankshaft by using a fixing mechanism through the test component, and then use the adjusting mechanism to adjust the position of the pressure roller, and control the pressure roller to press on the crankshaft, and use the pressure roller to further fix the crankshaft. When the motor drives the crankshaft to rotate, the vibration data of the crankshaft during rotation will be transmitted to the vibration probe through the pressure roller, and then the data will be transmitted to the dynamic balancing instrument. The dynamic balancing instrument will analyze and judge the data, and finally calculate the dynamic balance correction amount of the automobile crankshaft body, and adjust the counterweight as needed until the required standard is met. This solution only needs to insert the crankshaft into the insertion hole, and then cooperate with the pressing of the pressure roller to detect the rotating crankshaft, which effectively avoids the damage to the crankshaft caused by the fixing errors at both ends, and has high practicality.

[0014] 2. The utility model can utilize multiple groups of adjustment mechanisms to adjust the position of the pressing roller pressing the crankshaft as needed through the adjustment mechanism, and can be applicable to crankshafts of more different specifications, with high practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a cross-sectional view of the crankshaft dynamic balancing test device of the utility model;

[0016] Figure 2 This is a schematic diagram of the test component structure of the utility model.

[0017] Reference numerals:

[0018] 100. Dynamic balancing instrument;

[0019] 200, test assembly; 210, mounting frame; 220, gas rod 1; 230, guide plate; 240, mounting plate; 250, gas rod 2; 260, pressure sensor; 270, vibration probe; 280, pressure roller;

[0020] 300, fixing mechanism; 310, electric push rod; 320, movable frame; 330, rotating disk; 340, fixing frame; 350, motor; 360, loading head; 370, material insertion hole; 371, anti-slip pad;

[0021] 400, adjustment mechanism; 410, telescopic rod; 420, adjustment frame; 430, positioning rod; 431, protective cover; 440, positioning hole; 450, gas rod three; 460, mounting seat; 470, air pump assembly. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical solution and advantages of the utility model clearer, the utility model is further described in detail below in combination with specific implementation methods and with reference to the accompanying drawings. It should be noted that the embodiments of the utility model and the features in the embodiments can be combined with each other without conflict.

[0023] A crankshaft dynamic balancing test device provided by some embodiments of the present utility model will be described below in conjunction with the accompanying drawings.

[0024] Combination Figure 1-2 As shown, the utility model provides a crankshaft dynamic balancing test device, comprising: a dynamic balancing instrument 100 and a test assembly 200; the test assembly 200 is arranged on the dynamic balancing instrument 100.

[0025] The test assembly 200 includes a fixing mechanism 300 arranged on the dynamic balancing instrument 100, an adjusting mechanism 400 installed on the fixing mechanism 300, and a testing mechanism connected to the bottom of the adjusting mechanism 400; the testing mechanism includes a mounting frame 210 installed at the bottom of the adjusting mechanism 400, a gas rod 1 220 fixed in the mounting frame 210, a guide plate 230 connected to both ends of the gas rod 1 220, a mounting plate 240 fixed on the guide plate 230, a gas rod 250 installed on the mounting plate 240, a pressure sensor 260 fixed at the bottom end of the gas rod 250, a vibration probe 270 connected to the bottom of the pressure sensor 260, and a pressure roller 280 installed at the bottom of the vibration probe 270. Through the test component 200, the crankshaft can be fixed by using the fixing mechanism 300, and then the position of the pressure roller 280 can be adjusted by using the adjustment mechanism 400, and the pressure roller 280 can be controlled to press on the crankshaft, and the crankshaft can be further fixed by using the pressure roller 280. When the motor 350 drives the crankshaft to rotate, the vibration data of the crankshaft during rotation will be transmitted to the vibration probe 270 through the pressure roller 280, and then the data will be transmitted to the dynamic balancing instrument 100. The dynamic balancing instrument 100 will analyze and judge the data, and finally calculate the dynamic balance correction amount of the automobile crankshaft body, and adjust the counterweight as needed until the required standard is met. This solution only needs to insert the crankshaft into the insertion hole 370, and then cooperate with the pressing of the pressure roller 280 to detect the rotating crankshaft, which effectively avoids the damage to the crankshaft caused by the fixing errors at both ends.

[0026] Specifically, the fixing mechanism 300 includes an electric push rod 310 embedded in the dynamic balancing instrument 100, a movable frame 320 fixed to the driving end of the electric push rod 310, a rotating disk 330 installed on the movable frame 320, a fixed frame 340 installed on the side of the dynamic balancing instrument 100, a motor 350 fixed on the fixed frame 340, a loading head 360 respectively fixed on the motor 350 and the rotating disk 330, and an insertion hole 370 opened on the loading head 360. By inserting one end of the crankshaft into the loading head 360, and then the electric push rod 310 drives the movable frame 320 to move inward, the horizontally corresponding loading head 360 completes the fixation of the two ends of the crankshaft, thereby completing the quick positioning of the crankshaft.

[0027] Furthermore, an anti-skid pad 371 is provided on the inner side of the material insertion hole 370 , and the friction between the material loading head 360 and the crankshaft can be increased by the anti-skid pad 371 , so that the motor 350 can drive the crankshaft to rotate after the crankshaft is pressed on the anti-skid pad 371 , which is more reasonable.

[0028] Specifically, the adjustment mechanism 400 includes a telescopic rod 410 installed between the movable frame 320 and the fixed frame 340, an adjustment frame 420 sleeved on the telescopic rod 410, a positioning rod 430 inserted on the adjustment frame 420, a positioning hole 440 opened on the telescopic rod 410 for inserting the positioning rod 430, an air rod three 450 connected to the bottom of the adjustment frame 420, a mounting seat 460 fixed to the bottom of the air rod three 450 and an air pump group 470 installed in the mounting seat 460. The position of the adjustment frame 420 on the telescopic rod 410 can be adjusted by pulling the positioning rod 430 upwards. After adjusting to a suitable position, the positioning rod 430 is released to complete the locking. Then the air pump group 470 drives the test assembly 200 to descend, so that the pressure roller 280 falls onto the crankshaft, which is more convenient to use.

[0029] Furthermore, a protective sleeve 431 is connected between the positioning rod 430 and the adjustment frame 420. The elastic protective sleeve 431 can play a protective role and can also stably insert the positioning rod 430 into the positioning hole 440 after releasing the positioning rod 430 to prevent the positioning rod 430 from shaking.

[0030] It should be noted that the air rod 1 220, the air rod 250 and the air rod 3 450 are all connected to the air pump group 470 through pipelines. The air pump group 470 is composed of more than two groups of air pumps and can control multiple pneumatic structures, which is more practical.

[0031] The working principle and use process of the utility model are as follows: first, one end of the crankshaft is inserted into the material loading head 360, and then the electric push rod 310 drives the movable frame 320 to move inward, so that the horizontal corresponding material loading head 360 completes the fixation of the two ends of the crankshaft, and then the positioning rod 430 is pulled upward to adjust the position of the adjustment frame 420 on the telescopic rod 410. After adjusting to the appropriate position, the positioning rod 430 is released to complete the locking, and then the air pump group 470 drives the test assembly 200 to descend, so that the pressure roller 280 falls on the crankshaft. At this time, the control air rod 250 continues to apply pressure downward until the pressure roller 280 falls on the crankshaft. The force sensor 260 detects that the pressure of the pressure roller 280 on the crankshaft reaches a preset range, and then the motor 350 drives the crankshaft to rotate. The vibration data of the crankshaft during rotation is transmitted to the vibration probe 270 through the pressure roller 280, and then the data is transmitted to the dynamic balancing instrument 100. The dynamic balancing instrument 100 analyzes and judges the data, and finally calculates the dynamic balancing correction amount of the automobile crankshaft body, installs the corresponding counterweight block on the automobile crankshaft body or removes the weight of the automobile crankshaft body accordingly, and performs a new dynamic balancing test on the automobile crankshaft body again until the required standard is met.

[0032] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A crankshaft dynamic balancing test device, characterized in that: include: Dynamic balancing instrument (100) and test assembly (200); The test assembly (200) is arranged on the dynamic balancing instrument (100); The test assembly (200) comprises a fixing mechanism (300) arranged on the dynamic balancing instrument (100), an adjusting mechanism (400) installed on the fixing mechanism (300), and a test mechanism connected to the bottom of the adjusting mechanism (400); The testing mechanism comprises a mounting frame (210) mounted on the bottom of the adjusting mechanism (400), a gas rod one (220) fixed in the mounting frame (210), a guide plate (230) connected to both ends of the gas rod one (220), a mounting plate (240) fixed on the guide plate (230), a gas rod two (250) mounted on the mounting plate (240), a pressure sensor (260) fixed to the bottom end of the gas rod two (250), a vibration probe (270) connected to the bottom of the pressure sensor (260), and a pressure roller (280) mounted on the bottom of the vibration probe (270).

2. The crankshaft dynamic balancing test device according to claim 1, characterized in that: The fixing mechanism (300) comprises an electric push rod (310) embedded in the dynamic balancing instrument (100), a movable frame (320) fixed to the driving end of the electric push rod (310), a rotating disk (330) installed on the movable frame (320), a fixing frame (340) installed on the side of the dynamic balancing instrument (100), a motor (350) fixed on the fixing frame (340), a material loading head (360) respectively fixed to the motor (350) and the rotating disk (330), and a material insertion hole (370) opened on the material loading head (360).

3. The crankshaft dynamic balancing test device according to claim 2, characterized in that: An anti-slip pad (371) is provided on the inner side of the material insertion hole (370).

4. The crankshaft dynamic balancing test device according to claim 2, characterized in that: The adjustment mechanism (400) comprises a telescopic rod (410) installed between the movable frame (320) and the fixed frame (340), an adjustment frame (420) sleeved on the telescopic rod (410), a positioning rod (430) inserted on the adjustment frame (420), a positioning hole (440) provided on the telescopic rod (410) for inserting the positioning rod (430), an air rod three (450) connected to the bottom of the adjustment frame (420), a mounting seat (460) fixed to the bottom of the air rod three (450), and an air pump group (470) installed in the mounting seat (460).

5. The crankshaft dynamic balancing test device according to claim 4, characterized in that: A protective sleeve (431) is connected between the positioning rod (430) and the adjustment frame (420).

6. The crankshaft dynamic balancing test device according to claim 4, characterized in that: The gas rod one (220), the gas rod two (250) and the gas rod three (450) are all connected to the air pump assembly (470) via pipelines.

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