Loading test tool for electric accelerator mechanism

Abstract

The utility model belongs to the test technology, and relates to a loading test tool for an electric throttle mechanism. The device is characterized by comprising an encoder, a loading disc, a connecting sleeve, a supporting seat, an output shaft, a connecting rod, a mounting bracket, a weight and the like. The test tool is used for load test and stroke test of the electric throttle mechanism, and the design of the tool can ensure the coaxiality of the rotation center of the rocker arm of the electric throttle mechanism and a loading test part; load torque is provided by customizing weights, and the load torque is stable and reliable; the output shaft is connected with the rocker arm of the electric accelerator mechanism only through the connecting rod, the number of switching parts is small, the transmission gap is controllable, the stroke test accuracy is high, and repeatability is good.

Description

TECHNICAL FIELD

[0001] The utility model belongs to test technology, more particularly to a kind of electric throttle mechanism loading test tool. BACKGROUND

[0002] In the performance test process of electric throttle mechanism, for the test of electric throttle mechanism movement stroke, the existing test tool has too many switching structures, transmission gap is larger, and the connection between the rocker of electric throttle mechanism is not firm and easy to loosen, the accuracy and repeatability of measurement data are poor, which seriously affects the performance test result of electric throttle mechanism. UTILITY MODEL CONTENTS

[0003] The utility model aims at: design a kind of electric throttle mechanism loading test tool, for electric throttle mechanism load test and stroke test.It requires to provide specified load torque for electric throttle mechanism;It can accurately test the movement stroke of electric throttle mechanism;It requires that the electric throttle mechanism to be tested is installed conveniently and positioned accurately.

[0004] The technical scheme of the utility model is:

[0005] The electric throttle mechanism loading test tool includes encoder 1, loading disc 2, connecting sleeve 3, support seat 4, output shaft 5, connecting rod 6, mounting bracket 7, weight 8 and other components.

[0006] Support seat is installed on bracket, and output shaft is supported and installed on support seat by bearing;

[0007] Connecting sleeve is sleeved on output shaft, one end of connecting sleeve is fixed with support seat, the other end is fixed with encoder housing, and the rotating shaft of encoder is coaxially connected with output shaft;

[0008] The electric throttle mechanism to be tested is installed on bracket, and the rocker of electric throttle mechanism to be tested is connected with output shaft through connecting rod;

[0009] The middle part of connecting sleeve is provided with opening gap, loading disc is connected with output shaft at gap position, and weight is connected below loading disc.

[0010] Further, the end of output shaft away from encoder is provided with positioning hole, and the positioning hole is gap positioning matched with the rotating shaft of rocker of electric throttle mechanism to be tested.

[0011] Further, the loading disc is T-shaped, the vertical section of loading disc is connected with output shaft, the outer surface of horizontal section of loading disc is arc-shaped, and the center of arc is coincided with the axis of output shaft.

[0012] Further, the weight of weight is customized according to the radius size of loading disc arc.

[0013] Further, the connecting rod comprises a cylindrical segment and a planar segment, the cylindrical segment is vertically inserted with the rotating shaft, and the planar segment is connected with the rocker arm of the electric throttle mechanism.

[0014] Further, the connecting rod is connected with the output shaft in a clearance positioning mode, and is fastened through a locking screw, so that the angle transmission clearance is reduced.

[0015] Further, the connecting sleeve has a circumferential angle range of 120°-180°, so that interference with the connecting sleeve is prevented.

[0016] Further, the supporting seat is internally provided with a rolling bearing for the rotating movement of the output shaft.

[0017] Further, the mounting bracket has a 'j' shaped structure, so that the electric throttle mechanism is conveniently mounted and fixed.

[0018] The weight provides a load torque for the electric throttle mechanism. According to the outer ring radius of 100 mm of the loading disc and the load torque requirements of 3.5 N.m and 5.0 N.m of the electric throttle mechanism, 3.57 Kg and 5.10 Kg of the weight are customized respectively.

[0019] The electric throttle mechanism has the following advantages:

[0020] 1. A high-precision digital photoelectric encoder is adopted to directly measure the stroke of the electric throttle mechanism, so that the measurement error caused by human factors is reduced, the encoder can be directly connected with the output shaft without the need of adding a coupling device, the tooling transition gap is reduced, and the accuracy of the stroke test of the electric throttle mechanism is improved;

[0021] 2. The output shaft is designed in cooperation with the rotating shaft of the rocker arm of the electric throttle mechanism, clearance positioning cooperation is adopted, the coaxiality of the output shaft and the rotating shaft of the rocker arm is improved, the electric throttle mechanism is conveniently positioned and installed, and the deviation caused by the installation of the measured electric throttle mechanism is reduced;

[0022] 3. The weight is customized to apply a load torque to the electric throttle mechanism, the loading torque is stable, and the loading precision is high;

[0023] 4. The connection between the connecting rod and the output shaft is realized through machining precision, clearance positioning cooperation, convenient disassembly and assembly, minimized transmission gap, and fastening through a locking screw, so that the stroke error caused by the sliding of the connecting rod during movement is prevented;

[0024] 5. The connecting structure of the connecting rod and the rocker arm of the electric throttle mechanism is modified from a cylindrical surface to a planar surface, the contact area with the rocker arm is increased, the fastening of the screw nut is facilitated, the connection is stable, and the accuracy and repeatability of the test results are improved;

[0025] 6. The structure is simple, and the test results are accurate and reliable. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 is the assembly structure schematic diagram of the utility model.

[0027] Figure 2 is the assembly structure sectional view of the utility model.

[0028] Among them, 1 is the encoder, 2 is the loading disc, 3 is the connecting sleeve, 4 is the supporting seat, 5 is the output shaft, 6 is the connecting rod, 7 is the mounting bracket, 8 is the weight. DETAILED DESCRIPTION

[0029] The utility model is further explained in detail in combination with the structural diagram of appendix.

[0030] Referring to Figure 1 And Figure 2 , the electric throttle mechanism loading test tool comprises an encoder 1, a loading disc 2, a connecting sleeve 3, a supporting seat 4, an output shaft 5, a connecting rod 6, a mounting bracket 7, a weight 8 and the like.

[0031] The encoder 1 is a stroke test sensor of the electric throttle mechanism, and a BL50-R series single-turn absolute value sensor of Beijing Feibo is selected.

[0032] The loading disc 2 is a load torque loading component of the electric throttle mechanism, is installed on the output shaft 5, and makes the rotation center thereof coincide with the rotation center shaft of the electric throttle mechanism.

[0033] The connecting sleeve 3 is used for fixedly installing the encoder 1, is a hollow structure, the output shaft 5 can pass through the connecting sleeve 3, and a space meeting the movement stroke of the electric throttle mechanism is left at the position of the loading disc 2.

[0034] The supporting seat 4 is used for fixedly supporting the output shaft 5 and the connecting sleeve 3, is internally provided with a rolling bearing, and meets the rotating movement of the tool.

[0035] The output shaft 5 is a main rotating structure, one end is used for connecting the encoder 1, the other end is in gap positioning cooperation with the rotating shaft of the electric throttle mechanism rocker arm, is used for positioning when the electric throttle mechanism is installed, and ensures that the rotating center measured by the encoder and the rotating center of the electric throttle mechanism rocker arm are coaxial, so that the accuracy requirement of the electric throttle mechanism stroke test is met.

[0036] The connecting rod 6 is used for connecting the output shaft 5 and the electric throttle mechanism rocker arm. The movement stroke of the electric throttle mechanism rocker arm is transmitted to the output shaft 5 through the connecting rod, so that the loading disc 2 is loaded and the encoder 1 is measured.

[0037] The mounting bracket 7 is a "U" shaped structure for mounting and fixing the bearing seat 4 and the measured electric throttle mechanism.

[0038] The weight 8 provides a load torque for the electric throttle mechanism.

[0039] The working principle of the utility model is as follows:

[0040] 1. The electric throttle mechanism rocker rotating shaft is connected with the output shaft 5 one end mounting hole, and the electric throttle mechanism bottom fixed screw is tightened.

[0041] 2. The electric throttle mechanism rocker is rotated around the rotating shaft as the center, and the output shaft 5 is driven to rotate through the connecting rod 6, and the output shaft 5 end is connected with the encoder 1, so that the electric throttle mechanism rocker angle stroke can be tested.

[0042] 3. When the electric throttle mechanism needs to be loaded, the weight 8 is hung to the outer circle of the loading disc 2, the loading disc 2 is fixedly connected with the output shaft 5 through the screw, and the rotating centers are consistent, so that the torque of the electric throttle mechanism is applied.

[0043] The utility model is used for testing the stroke of the electric throttle mechanism, and the test results are as follows.

[0044]

[0045]

[0046] The above-mentioned embodiments only express the preferred embodiments of the utility model, and the description is more specific and detailed, but it cannot be understood as the limitation of the utility model patent range. It should be pointed out that for the ordinary skilled person in the art, without departing from the concept of the utility model, a number of modifications and improvements can be made, which belong to the protection range of the utility model. Therefore, the protection range of the utility model patent should be subject to the appended claims.

Claims

1. A loading test fixture for an electric throttle mechanism, characterized in that, The tooling includes an encoder (1), a loading disk (2), a connecting sleeve (3), a support seat (4), an output shaft (5), a connecting rod (6), a mounting bracket (7), and weights (8). The support seat is installed on the bracket, and the output shaft is supported by bearings and installed on the support seat. The connecting sleeve is sleeved on the output shaft. One end of the connecting sleeve is fixed to the support seat, and the other end is fixed to the encoder housing. The rotating shaft of the encoder is coaxially connected to the output shaft. The measured electric throttle mechanism is installed on the bracket, and the rocker arm of the measured electric throttle mechanism is connected to the output shaft through a connecting rod. There is an opening notch in the middle of the connecting sleeve. The loading disk is connected to the output shaft at the notch position, and weights are connected below the loading disk.

2. The electric throttle mechanism loading test fixture according to claim 1, characterized in that: A positioning hole is provided at one end of the output shaft away from the encoder. The positioning hole and the rotating shaft of the rocker arm of the measured electric throttle mechanism are in clearance positioning fit.

3. The electric throttle mechanism loading test fixture according to claim 1, characterized in that: The loading disk is T-shaped. The vertical section of the loading disk is connected to the output shaft, and the outer surface of the horizontal section of the loading disk is arc-shaped. The center of the arc coincides with the axis of the output shaft.

4. The electric throttle mechanism loading test fixture according to claim 3, characterized in that: The weight of the weights is customized according to the size of the arc radius of the loading disk.

5. The electric throttle mechanism loading test fixture according to claim 1, characterized in that: The connecting rod includes a cylindrical section and a flat section. The cylindrical section is vertically inserted into the rotating shaft, and the horizontal section is connected to the rocker arm of the electric throttle mechanism.

6. The electric throttle mechanism loading test fixture according to claim 5, characterized in that: The connecting rod is connected to the output shaft in clearance positioning fit and is tightened by a set screw to reduce the angle transmission clearance.

7. An electric throttle mechanism loading test tooling according to claim 1, wherein: The circumferential angle range of the notch of the connecting sleeve is: 120° to 180°, to prevent interference with the connecting sleeve.

8. The electric throttle mechanism loading test fixture according to claim 1, characterized in that: A rolling bearing is installed inside the support seat for the rotational movement of the output shaft.

9. The electric throttle mechanism loading test fixture according to claim 1, characterized in that: The mounting bracket is in a "C" shape structure, which is convenient for the installation and fixation of the electric throttle mechanism.

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