Device for fatigue test of electric actuating mechanism of auxiliary box of AMT (automated mechanical transmission)

Abstract

The utility model discloses a device for an AMT auxiliary box electric actuating mechanism fatigue test, which comprises a bottom plate, a pair of symmetrically arranged supporting seats are fixedly arranged at the longitudinal front end of the bottom plate, a gear shifting shaft is arranged between the pair of supporting seats, a shifting fork block is sleeved in the middle of the gear shifting shaft, and the shifting fork block is arranged on the bottom plate. A pair of symmetrical baffles is arranged at the tail end of the shifting fork block; an L-shaped supporting plate is fixedly arranged at the longitudinal rear end of the bottom plate, and a supporting frame is fixedly arranged on one side face of the L-shaped supporting plate. The supporting frame is parallel to the other side face of the L-shaped supporting plate. A gear shifting shaft and a shifting fork block are used for simulating a real load during high-gear and low-gear switching of an auxiliary box of the gearbox, so that the test is closer to a real condition; a first mounting hole and a second mounting hole which are coaxial are formed in the other side surfaces of the support frame and the L-shaped support plate, so that the electric actuating mechanism of the auxiliary box can be stably mounted; the technical problem that the auxiliary box electric actuating mechanism is not provided with a special test device is solved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the field of power system performance test technology relates to fatigue test device, specifically a kind of device for AMT auxiliary gearbox electric actuator fatigue test. BACKGROUND

[0002] In recent years, more and more commercial vehicles begin to use AMT (Automatic Mechanical Transmission) transmission, especially in the field of medium and heavy truck, it is popularized rapidly, and has obtained good market feedback. In order to quickly seize the market, major manufacturers quickly promote AMT transmission to various vehicle models. But because of the difference of use condition and customer group, the demand of different vehicle models for AMT is also different. The common AMT types at present include electric control pneumatic, electric control electric and electric control hydraulic type. Among them, electric control pneumatic is used more in medium and heavy truck, and electric control hydraulic is used more in light truck.

[0003] Because light truck often drives in suburban road condition, the shift frequency is high, and most drivers have the experience of driving small car, so they pay much attention to the shift smoothness and shift noise of AMT. Therefore, electric control hydraulic technology route is used more on light truck, so that the shift time can be shortened, and there is no exhaust sound of pneumatic mechanism shift, and the shift quality is significantly improved.

[0004] With the enrichment of products, the AMT used by light truck is not limited to 5 gears or 6 gears, and more gears are required, so 8-gear AMT appears, and auxiliary gearbox structure appears, so the fatigue test research of auxiliary gearbox electric actuator is imminent. INVENTION CONTENTS

[0005] In view of the deficiencies in the prior art, the purpose of the utility model is to provide a device for AMT auxiliary gearbox electric actuator fatigue test, to solve the technical problem that auxiliary gearbox electric actuator has no special test device.

[0006] In order to solve the above technical problems, the utility model adopts the following technical scheme to realize it:

[0007] A device for AMT auxiliary gearbox electric actuator fatigue test, comprising a bottom plate, a pair of symmetrical support seats are fixedly arranged on the longitudinal front end of the bottom plate, a shift shaft is arranged between the pair of support seats, a shift fork block is sleeved in the middle of the shift shaft, and a pair of symmetrical baffles are arranged at the tail end of the shift fork block.

[0008] The longitudinal rear end of the bottom plate is fixedly provided with an L-shaped support plate, and a support frame is fixedly arranged on one side surface of the L-shaped support plate; the support frame is parallel to the other side surface of the L-shaped support plate.

[0009] The support frame and the other side of the L-shaped support plate are respectively provided with a first mounting hole and a second mounting hole, and the diameter of the first mounting hole is smaller than that of the second mounting hole.

[0010] The utility model also includes the following technical features:

[0011] The shift fork block is fixed on the shift shaft through a pin.

[0012] The support seat and the shift shaft are fixed through a self-locking pin.

[0013] The support frame is fixed on one side of the L-shaped support plate through a first bolt.

[0014] The support seat is fixed on the bottom plate through a second bolt.

[0015] A square hole is arranged on the L-shaped support plate above the second mounting hole.

[0016] Compared with the prior art, the utility model has the beneficial technical effects that:

[0017] In the utility model, the shift shaft and the shift fork block are used to simulate the real load when the high-low gear of the gearbox auxiliary box is switched, so that the test is closer to the real situation; the coaxial first mounting hole and the second mounting hole are arranged on the other side of the support frame and the L-shaped support plate, so that the installation of the auxiliary box electric actuator is stable; and the technical problem that the auxiliary box electric actuator has no special test device is solved. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is a schematic view of the auxiliary box electric actuator fatigue test bench.

[0019] Figure 2 It is an application schematic view of the auxiliary box electric actuator fatigue test bench.

[0020] The meanings of the various reference numerals in the drawing are as follows: 1 - bottom plate, 2 - first bolt, 3 - support, 4 - side support plate, 5 - support seat, 6 - self-locking pin, 7 - second bolt, 8 - shift shaft, 9 - shift fork block, 10 - pin, 11 - baffle, 12 - auxiliary box electric actuator, 13 - third bolt, 14 - first mounting hole, 15 - second mounting hole.

[0021] The specific content of the utility model is further explained and described in detail in combination with the embodiments. DETAILED DESCRIPTION

[0022] It should be noted that all the components in the utility model are known components in the art, unless otherwise specified.

[0023] The utility model provides a specific embodiment is given below, it is explained that the utility model is not limited to the following specific embodiments, equivalent transformation on the basis of the technical scheme of the application falls into the protection scope of the utility model.

[0024] The utility model discloses a device for AMT auxiliary gearbox electric actuator fatigue test, including the bottom plate 1, the bottom plate 1 is fixedly arranged with a pair of symmetrical support seat 5 on longitudinal front end, a pair of support seat 5 is provided with shift shaft 8 between, the middle sleeve of shift shaft 8 is provided with shift fork block 9, and the end of shift fork block 9 is provided with a pair of symmetrical baffle 11;

[0025] The longitudinal rear end of bottom plate 1 is fixedly provided with L-shaped support plate 4, and the side surface of L-shaped support plate 4 is fixedly provided with support frame 3;Support frame 3 is parallel to the other side surface of L-shaped support plate 4.

[0026] First mounting hole 14 and second mounting hole 15 are arranged on the other side surface of support frame 3 and L-shaped support plate 4 respectively, and the hole diameter of first mounting hole 14 is less than the hole diameter of second mounting hole 15.

[0027] In the above technical scheme, the auxiliary gearbox electric actuator 12 is fixed in the second mounting hole 15 on the L-shaped support plate through the fixing bolt 13, and when installing, the front end of the actuator is assembled in the first mounting hole 14 of the support frame 3, and the gear shifting knob of the actuator is placed between the two baffles 11 extended by the shift fork block 9.

[0028] The auxiliary gearbox electric actuator 12 is connected with the connector, the wire harness can pass through the hole on the support side plate and be fixed by the cable tie.

[0029] Without paying attention to the initial position of the knob, the motor is commanded to rotate forward, the motor rotates, the knob is pushed to move linearly, thereby driving the shift fork block 9 to move to the low gear area, the shift fork block 9 drives the shift shaft 8 to move,

[0030] The shift shaft 8 and the shift fork block 9 are used to simulate the real load when the gearbox auxiliary gearbox high-low gear is switched, so that the test is closer to the real situation;By opening the coaxial first mounting hole 14 and second mounting hole 15 on the other side surface of the support frame 3 and the L-shaped support plate 4, the stable installation of the auxiliary gearbox electric actuator is ensured;The technical problem that the auxiliary gearbox electric actuator does not have a special test device is solved.

[0031] The shift fork block 9 is fixed on the shift shaft 8 by the pin 10.

[0032] In the above technical scheme, the pin 10 is connected, which is convenient for positioning and installation.

[0033] The support seat 5 and the shift shaft 8 are fixed by the self-locking cotter pin 6.

[0034] In the above technical solution, the support seat 5 has a self-locking pin for positioning, and the shift shaft 8 will not move beyond the range of the support seats 5 and 11 even when moving in the support seats 5 and 11.

[0035] The support frame 3 is fixed on one side of the L-shaped support plate 4 by the first bolt 2.

[0036] In the above technical solution, the bolt connection is convenient for installation and disassembly.

[0037] The support seat 5 is fixed on the bottom plate 1 by the second bolt 7.

[0038] In the above technical solution, the bolt connection is convenient for installation and disassembly.

[0039] A square hole is arranged on the L-shaped support plate 4 above the second mounting hole 15.

[0040] In the above technical solution, the square hole is used for installing or connecting the electric actuator connector.

Claims

1. A device for fatigue testing of an AMT auxiliary gearbox electric actuator, comprising a base plate (1), characterized in that, A pair of symmetrically arranged support seats (5) are fixedly arranged on the longitudinal front end of the base plate (1). A shift shaft (8) is arranged between the pair of support seats (5). A shift fork block (9) is sleeved in the middle of the shift shaft (8). A pair of symmetrical baffles (11) are arranged at the end of the shift fork block (9). An L-shaped support plate (4) is fixedly installed at the longitudinal rear end of the base plate (1), and a support frame (3) is fixedly installed on one side of the L-shaped support plate (4); the support frame (3) is parallel to the other side of the L-shaped support plate (4); The support frame (3) and the L-shaped support plate (4) are respectively provided with a first mounting hole (14) and a second mounting hole (15), the diameter of the first mounting hole (14) is smaller than the diameter of the second mounting hole (15).

2. The apparatus for fatigue testing of the electric actuator of the AMT auxiliary gearbox as described in claim 1, characterized in that, The shift fork block (9) is fixed to the shift shaft (8) by a pin (10).

3. The apparatus for fatigue testing of the electric actuator of the AMT auxiliary gearbox as described in claim 1, characterized in that, The support base (5) and the shift shaft (8) are fixed together by a self-locking pin (6).

4. The apparatus for fatigue testing of the electric actuator of the AMT auxiliary gearbox as described in claim 1, characterized in that, The support frame (3) is fixed to one side of the L-shaped support plate (4) by the first bolt (2).

5. The apparatus for fatigue testing of the electric actuator of the AMT auxiliary gearbox as described in claim 1, characterized in that, The support base (5) is fixed to the base plate (1) by the second bolt (7).

6. The apparatus for fatigue testing of the electric actuator of the AMT auxiliary gearbox as described in claim 1, characterized in that, A square hole is provided on the L-shaped support plate (4) above the second mounting hole (15).

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