CN202442871U - Comprehensive test bed for performance and durability of electric window glass lifter - Google Patents

Abstract

The utility model discloses a performance and durability comprehensive test bench for an electric glass lifter, which comprises a bottom frame, two sets of vertical frames, and two positioning beams. There are two upper and lower positioning beams movable between the two positioning beams, and a plurality of vertical beams are movable between the two positioning beams; a displacement measurement component is arranged on the positioning beam above, and the displacement measurement component can slide along the positioning beam; the displacement measurement component The displacement sensor measures the stroke, displacement and position information of the lifter during the performance test; the top center of the bottom frame is movable with a force measurement component and a weight component. The utility model can complete various test items including the performance and durability of the electric glass lifter on one test device.

Description

Electric glass regulator performance and durability comprehensive test bench

technical field

The utility model relates to an automobile performance test equipment, in particular to a performance and durability comprehensive test bench for an electric glass lifter.

Background technique

Electric window regulators are a major component of car doors. Electric glass lifters need to be tested for performance and durability during the product design stage and production process. The performance test of the electric glass regulator requires testing of the working voltage, current characteristics, closing force, lifting speed, and self-locking performance on the bench. The durability test requires the durability performance test on the actual car door.

The existing electric window regulator test bench cannot meet the needs of multiple performance and durability tests at the same time; for example, the performance test bench cannot be installed with actual car doors, and cannot be used for durability tests and simulated real vehicle environment tests.

Contents of the invention

The technical problem to be solved by the utility model is to provide a comprehensive test bench for the performance and durability of the electric window regulator, which can detect various test items for the electric window regulator, and effectively reduce the cost of the test equipment.

In order to solve the above technical problems, the technical solution of the utility model electric window lifter performance and durability comprehensive test bench is as follows:

It includes a base frame 1, two sets of vertical frames 5, and two positioning beams 2. The two sets of vertical frames 5 are movably arranged on both sides of the base frame 1, and two sets of vertical frames 5 are movable between the upper and lower positioning beams 2, two A plurality of vertical beams 21 are movably arranged between the positioning beams 2; a displacement measurement assembly 7 is arranged on the positioning beam 2 above, and the displacement measurement assembly 7 can slide along the positioning beam 2; the displacement measurement assembly 7 includes a displacement sensor 71, Displacement sensor sliding seat 72, locking screw 73, displacement sensor 71 is fixedly arranged on the displacement sensor sliding seat 72, the bottom of displacement sensor sliding seat 72 is provided with locking screw 73; Displacement sensor sliding seat 72 is movably arranged on the positioning beam above 2, the displacement sensor sliding seat 72 can move left and right along the positioning beam 2, and it is fixed on the specified position of the positioning beam 2 by rotating the locking screw 73; the displacement sensor 71 measures the lift stroke, displacement, Position information; a force measuring component 4 and a weight component 3 are movable in the center of the top of the chassis 1 .

Further, the underframe 1 includes a bottom beam 11, the two sides of the bottom beam 11 are respectively connected with transverse T-shaped groove plates 13, and the center of the bottom beam 11 is provided with a vertical T-shaped groove plate 12; The slot plate 13 is movably connected to the base frame 1 ; the force measurement assembly 4 and the weight assembly 3 are respectively connected to the base frame 1 through the vertical T-shaped slot plate 12 .

Further, the stand 5 includes a column 52, a drive motor 53, a lead screw 54, and a beam positioning block 55, and the bottom of the column 52 is movably arranged in the transverse T-shaped groove plate 13 of the chassis 1; the inner side of the column 52 is movably provided with Two crossbeam positioning blocks 55 up and down, the stand 5 flexibly connects one end of the positioning crossbeam 2 through the crossbeam positioning block 55; the crossbeam positioning block 55 can move up and down along the column 52, and drives the positioning crossbeam 2 to move up and down along the stand 5; the two crossbeam positioning The blocks 55 are respectively connected to the leading screw 54 by threads opposite in direction of rotation, and the top of the leading screw 54 is provided with a driving motor 53; Reverse movement, thereby adjusting the distance between the two positioning beams 2 .

Further, the weight assembly 3 includes a sliding seat 36, a weight 32, a lifting cylinder 34, and a guide rod 33, the top of the sliding seat 36 is provided with a lifting cylinder 34, and the piston rod of the lifting cylinder 34 withstands the bottom of the weight 32, The weight 32 slides on the guide rod 33; driven by the lifting cylinder 34, the weight 32 can slide up and down along the guide rod 33; the top of the weight 32 is fixedly provided with an eyebolt 31; the sliding seat 36 passes through the sliding key at the bottom The vertical T-shaped groove plate 12 is flexibly connected to realize the flexible connection between the weight assembly 3 and the chassis 1; the bottom of the sliding seat 36 is provided with a roller 35; 1 to move back and forth.

In the self-locking test of the lifter, the weight assembly 3 is moved to directly below the glass bracket 61 of the lifter 6 under test, the lifting cylinder 34 is started to lift the weight 32, and then the wire rope 37 is passed through In the hole of the eyebolt screw 31, the two ends are connected to the glass bracket 61 respectively, and the stay cord of the displacement sensor 71 is connected to the glass bracket 61, and the displacement of the glass bracket 61 is measured by the displacement sensor 71; the piston of the lift cylinder 34 The rod retracts, and the weight 32 transmits its gravity to the glass bracket 61 through the wire rope 37, and the displacement sensor 71 measures the drop of the glass bracket 61 after being subjected to the pull-down force, thereby obtaining the self-locking performance of the lifter.

Further, the force measurement assembly 4 includes a force sensor 42, a force sensor holder 43, and a force sensor ring screw 41. The top of the force sensor 42 is connected to the force sensor ring screw 41, and the bottom of the force sensor 42 is hinged to the force sensor holder 43; Force sensor 42 measures the closing force of elevator;

When performing the lifter closing force measurement test, the force measurement assembly 4 is moved to directly below the glass bracket 61 of the lifter 6 under test, the steel wire rope 45 is passed through the hole of the force sensor eyebolt 41, and the two ends are respectively Be connected to the glass bracket 61 of the lifter 6; start the measured lifter 6 to make the glass bracket 61 rise, and the glass bracket 61 transmits the closing force to the force sensor 42 through the steel wire rope 45, and reads the measurement of the force sensor 42 The closing force of the lifter 6 under test can be obtained.

Further, one side of one of the two positioning beams 2 is provided with a dead point detection assembly 9; the dead point detection assembly 9 includes a vertical rod 93, a top dead center sensor 91, a bottom dead point sensor 92 A top dead center sensor 91 and a bottom dead center sensor 92 are movable on the pole 93, and the top dead center sensor 91 and the bottom dead center sensor 92 can move up and down along the pole 93; the pole 93 is fixedly arranged at the bottom On the frame 1; the top dead center sensor 91 judges whether the glass rises to the top dead center, and the bottom dead center sensor 92 judges whether the glass drops to the bottom dead center.

Further, the bottom frame 1 is provided with a water cooling assembly 10, the water cooling assembly 10 includes a water pump 101, a water basin 103, a sump 104, and a water pipe 102, the water pump 101 is arranged in the water basin 103, and the water outlet of the water pump 101 is connected to the water pipe 102; Both sides of water basin 103 are respectively connected with sump 104; the outlet of water pipe 102 is aligned with the motor of the lifter 6 to be tested, and water pump 101 is started, and the cooling water in water basin 103 is pumped out by water pump 101, and is sprayed to the measured lifter 6 through water pipe 102. After measuring the motor casing of the lifter 6, it is collected back to the water basin 103 through the sump 104 to form a cooling cycle.

The top dead center sensor 91, the bottom dead center sensor 92, the force sensor 42, and the displacement sensor 71 are respectively electrically connected to the programmable logic controller of the electric control part, and the programmable logic controller is respectively electrically connected to the forward and reverse control circuit of the motor , the lifter motor voltage sensor, the lifter motor current sensor, the forward and reverse control circuit of the motor is electrically connected with the lifter motor; the top dead center sensor 91, the bottom dead center sensor 92, the force sensor 42, and the displacement sensor 71 input the signal Programmable logic controller, and control the rotation direction of the lifter motor through the motor forward and reverse control circuit, so as to control the rising or falling of the glass; the lifter motor voltage sensor is used to measure the voltage value applied to the lifter motor, the lifter The motor current sensor is used to measure the current value through the elevator motor.

The technical effect that the utility model can reach is:

The utility model can complete various test items including the performance and durability of the electric glass lifter on one test device.

Description of drawings

Below in conjunction with accompanying drawing and specific embodiment, the utility model is described in further detail:

Fig. 1 is the structure schematic diagram of the performance and durability comprehensive test bench of electric window lifter of the present utility model;

Fig. 2 is the structural representation of the chassis of the present utility model;

Fig. 3 is a schematic structural view of the weight assembly of the present invention;

Fig. 4 is a schematic structural view of the force measuring assembly of the present utility model;

Fig. 5 is the structural representation of the stand of the present utility model;

Fig. 6 is a schematic structural view of the displacement measurement assembly of the present invention;

Fig. 7 is a schematic diagram of a lifter closing force measurement test using the utility model;

Fig. 8 is the schematic diagram that adopts the utility model to carry out the self-locking test of lifter;

Fig. 9 is a schematic diagram of carrying out the durability test of the real car door of the lifter by using the utility model;

Fig. 10 is a schematic diagram of the control system of the present invention.

Explanation of the reference signs in the figure:

1 is the bottom frame, 11 is the bottom beam,

12 is a vertical T-slot plate, 13 is a horizontal T-slot plate,

14 is the ground foot, 15 is the universal wheel,

2 is a positioning beam, 21 is a vertical beam,

3 is a weight assembly, 31 is an eyebolt screw,

32 is a weight, 33 is a guide rod,

34 is a lifting cylinder, 35 is a roller,

36 is a sliding seat,

4 is the force measurement component, 41 is the force sensor eyebolt,

42 is a force sensor, 43 is a force sensor holder,

37 and 45 are wire ropes,

5 is a stand, 51 is a stand mounting plate,

52 is a column, 53 is a drive motor,

54 is a leading screw, 55 is a beam positioning block,

6 is the tested electric glass regulator, 61 is the glass bracket,

7 is a displacement measurement component, 71 is a displacement sensor,

72 is a displacement sensor sliding seat, 73 is a locking screw,

8 is the real car door,

9 dead point detection components, 91 is the top dead point sensor,

92 is the bottom dead center sensor, 93 is the pole,

10 is a water cooling component, 101 is a water pump,

102 is a water pipe, 103 is a water basin,

104 is a sump.

Detailed ways

Below in conjunction with specific embodiment, the utility model is described in detail, and the present embodiment implements under the premise of the technical solution of the utility model, and provides detailed implementation and specific operation process, but the protection scope of the utility model is not limited to The following examples provide examples only to more fully and completely illustrate the implementation of the present utility model.

As shown in Figure 1, the performance and durability comprehensive test bench of the electric glass regulator of the present invention includes a chassis 1, a positioning beam 2, a weight assembly 3, a force measurement assembly 4, a stand 5, a displacement measurement assembly 7, a stop Point detection component 9, water cooling component 10;

Two sets of vertical frames 5 are movably arranged on both sides of the bottom frame 1, and the vertical frames 5 can slide left and right along the two sides of the bottom frame 1; two sets of vertical frames 5 are provided with two positioning beams 2 up and down, and the positioning beam 2 can slide along the vertical frame. 5. Move up and down; there are multiple vertical beams 21 vertically arranged between the two positioning beams 2, and the two ends of the vertical beams 21 are respectively connected with the upper and lower positioning beams 2 in a detachable manner;

The positioning beam 2 is provided with a plurality of waist-shaped slots, and the vertical beam 21 is fixedly connected with the positioning beam 2 through the waist-shaped slots;

The vertical beam 21 is provided with a plurality of waist-shaped slot holes for positioning, and the electric glass regulator 6 to be tested is fixed on the positioning beam 2 or the vertical beam 21 with screws through its own mounting holes;

The positioning beam 2 is provided with a displacement measurement assembly 7, the displacement measurement assembly 7 can slide along the positioning beam 2, and is fixed on the designated position of the positioning beam 2;

A force measurement assembly 4 and a weight assembly 3 are arranged at the top center of the chassis 1 ; the force measurement assembly 4 and the weight assembly 3 can move forward and backward along the chassis 1 .

As shown in Figure 2, underframe 1 comprises bottom beam 11, and the both sides of bottom beam 11 connects transverse T-shaped groove plate 13 respectively, and the center of bottom beam 11 is provided with vertical T-shaped groove plate 12; The bottom of bottom beam 11 is provided with Anchor 14, universal wheel 15;

The stand 5 is movably connected to the underframe 1 through a transverse T-shaped slot plate 13 .

The underframe 1 is used as the basis for other components to be installed. The underframe 1 can freely move its position through the universal wheels 15 and can be supported on the ground through the feet 14 .

As shown in Figure 3, weight assembly 3 comprises sliding seat 36, weight 32, lifting cylinder 34, guide rod 33, and the top of sliding seat 36 is provided with lifting cylinder 34, and the piston rod of lifting cylinder 34 withstands the bottom of weight 32. At the bottom, the weight 32 slides on the guide rod 33, and the guide rod 33 is fixedly connected with the sliding seat 36; driven by the lifting cylinder 34, the weight 32 can slide up and down along the guide rod 33; the top of the weight 32 is fixedly provided with Eyebolt screw 31;

The lower part of the cylinder body of the lifting cylinder 34 is connected with the sliding seat 36;

The feather key at the bottom of the sliding seat 36 is inserted into the groove of the longitudinal T-shaped groove plate 12 for guidance;

Rollers 35 are provided at the bottom of the sliding seat 36; the weight assembly 3 slides back and forth on the bottom frame 1 along the longitudinal T-shaped groove plate 12 through the rollers 35;

In the self-locking test of the lifter, the weight assembly 3 provides the pull-down force for the lifter 6 through its own gravity, and when the lifting cylinder 34 lifts the weight 32, it is convenient to use the wire rope 37 to connect the lifter 6 to the weight 32; After the piston rod of the lifting cylinder 34 is retracted, the weight 32 transmits its own weight to the lifter 6 through the wire rope 37 .

As shown in Figure 4, force measuring assembly 4 comprises force sensor 42, force sensor holder 43, force sensor ring screw 41, and the top of force sensor 42 connects force sensor ring screw 41, and the bottom of force sensor 42 and force sensor holder 43 hinged;

The force sensor fixing seat 43 can move back and forth along the longitudinal T-shaped groove plate 12, and is fixed on the longitudinal T-shaped groove plate 12 by screws;

When performing the lifter closing force measurement test, the glass bracket 61 of the lifter 6 drives the wire rope 45 and then pulls the force sensor 42, and the closing force of the lifter 6 can be obtained by reading the measured value of the force sensor 42.

As shown in Figure 5, the stand 5 comprises a stand mounting plate 51, a column 52, a drive motor 53, a leading screw 54, a crossbeam positioning block 55, the bottom of the column 52 is provided with a stand mounting plate 51, and the stand mounting plate 51 is movable. In the transverse T-shaped groove plate 13, the stand mounting plate 51 can slide horizontally along the transverse T-shaped groove plate 13; the stand 5 is movably connected with the bottom frame 1 through the stand mounting plate 51;

The inner side of the column 52 is provided with two beam positioning blocks 55 up and down, and the stand 5 is connected to one end of the positioning beam 2 through the beam positioning block 55;

The two beam positioning blocks 55 are threadedly connected to the lead screw 54, and the top of the lead screw 54 is connected to the driving motor 53;

The upper thread of the lead screw 54 is opposite to the direction of rotation of the lower thread, and the two beam positioning blocks 55 are respectively sleeved on the opposite threads of the lead screw 54;

When the driving motor 53 rotates, since the two sections of threads on the lead screw 54 rotate in opposite directions, the two beam positioning blocks 55 move in opposite directions, thereby expanding or reducing the distance between the two, and then adjusting the distance between the positioning beams 2 ; The combination of different positions of the positioning beam 2 and the vertical beam 22 can facilitate fixing the lifter 6 under test on it.

As shown in Figure 6, the displacement measurement assembly 7 includes a displacement sensor 71, a displacement sensor sliding seat 72, and a locking screw 73. The displacement sensor 71 is fixedly arranged on the displacement sensor sliding seat 72, and the bottom of the displacement sensor sliding seat 72 is provided with a locking screw 73. ;

The displacement sensor sliding seat 72 is movably arranged on the positioning beam 2, and the displacement sensor sliding seat 72 can move left and right along the positioning beam 2, and is fixed on the designated position of the positioning beam 2 by turning the locking screw 73.

During measurement, the measuring end of displacement sensor 71 is connected on the glass bracket 61 of lifter 6, when glass bracket 61 moves up and down, the measuring end of displacement sensor 71 also moves thereupon, thereby measures the glass bracket 61 displacement value.

As shown in Figure 7, when performing the lifter closing force test, the force measuring assembly 4 is moved to directly below the glass bracket 61 of the lifter 6 under test, and the steel wire rope 45 is passed through the hole of the force sensor eyebolt 41, The two ends are respectively connected to the glass bracket 61 of the lifter 6; the lifter 6 to be tested is started to make the glass bracket 61 rise, and the glass bracket 61 transmits the closing force to the force sensor 42 through the steel wire rope 45, and collects the force sensor 42 signal to get the lifter closing force.

As shown in Figure 8, when performing the self-locking test of the lifter, the weight assembly 3 is moved to just below the glass bracket 61 of the lifter 6 under test, the lift cylinder 34 is started to lift the weight 32, and then the Wire rope 37 passes in the hole of suspension eye screw 31, and two ends are connected on the glass bracket 61 respectively, and the stay rope of displacement sensor 71 is connected on the glass bracket 61, measures the displacement of glass bracket 61 by displacement sensor 71; Lifting cylinder 34, after the piston rod of lifting cylinder 34 retreats, weight 32 hangs and transmits its own gravity to the glass bracket 61, and displacement sensor 71 measures the drop amount of glass bracket 61 after being subjected to the pull-down force, thereby obtaining the lift The self-locking performance of the device.

As shown in Figure 9, the dead point detection assembly 9 includes a vertical rod 93, a top dead point sensor 91, a bottom dead point sensor 92, and a top dead point sensor 91, a bottom dead point sensor 92 are movable on the vertical rod 93 , the top dead center sensor 91 and the bottom dead center sensor 92 can move up and down along the vertical rod 93 ; the vertical rod 93 is fixedly arranged on the chassis 1 .

The water cooling assembly 10 includes a water pump 101, a water basin 103, a sump 104, and a water pipe 102. The water pump 101 is arranged in the water basin 103, and the water outlet of the water pump 101 is connected to the water pipe 102; both sides of the water basin 103 are respectively connected to the sump 104.

When carrying out the durability test of the real car door, the distance between the two crossbeam positioning blocks 55 is adjusted by the driving motor 53, so that the spacing of the two crossbeam positioning blocks 55 is equal to the 8 hinge spacings of the real car door; 8, the real car door 8 is fixed on the test bench by the crossbeam positioning block 55;

Adjust the top dead center sensor 91 and the bottom dead center sensor 92 of the dead point detection assembly 9, so that the top and bottom dead center sensors 91 and 92 can detect the upper and lower dead center positions of the glass;

Align the outlet of the water pipe 102 with the motor of the lifter 6 under test, start the water pump 101, the cooling water in the water basin 103 is pumped out through the water pump 101, and spray to the motor casing of the lifter 6 through the water pipe 102, then pass through the sump 104 is collected back to the water basin 103 to form a cooling cycle.

As shown in Figure 10, the electric control part includes a PLC (programmable logic controller), the PLC is the main controller of the electric control part, and the PLC is electrically connected to the top dead center sensor 91, the bottom dead center sensor 92, and the force sensor 42 respectively. , a displacement sensor 71, a motor forward and reverse control circuit, a lifter motor voltage sensor, a lifter motor current sensor, and the lifter motor is electrically connected to the motor forward and reverse control circuit.

The working principle of the electronic control part is that the PLC collects the signals of each sensor and controls the rotation direction of the lifter motor through the forward and reverse control circuit of the lifter motor, thereby controlling the rise or fall of the glass;

The top dead center sensor 91 judges whether the glass has risen to the top dead center, the bottom dead center sensor 92 judges whether the glass has fallen to the bottom dead center, the force sensor 42 measures the closing force of the lifter, and the displacement sensor 71 measures the lifter during the performance test. Stroke, displacement, position information, the forward and reverse control circuit of the motor determines the current direction to the lifter motor according to the PLC control signal to determine the direction of the lifter motor, and the lifter motor voltage sensor is used to measure the voltage applied to the lifter motor The voltage value, lifter motor current sensor is used to measure the current value through the lifter motor.

Claims (8)

1. A comprehensive test bench for the performance and durability of an electric window lifter, characterized in that it includes an underframe (1), two sets of stands (5), two positioning beams (2), and two sets of stands (5) The activities are arranged on both sides of the bottom frame (1), and two upper and lower positioning beams (2) are movably arranged between the two sets of vertical frames (5), and a plurality of vertical beams (21) are movably arranged between the two positioning beams (2). ); The upper positioning beam (2) is provided with a displacement measurement component (7), and the displacement measurement component (7) can slide along the positioning beam (2); The displacement measurement component (7) includes a displacement sensor (71), a displacement sensor sliding seat (72), and a locking screw (73). The displacement sensor (71) is fixedly arranged on the displacement sensor sliding seat (72), and the displacement sensor sliding seat The bottom of (72) is provided with a locking screw (73); the displacement sensor sliding seat (72) is movably arranged on the positioning beam (2) above, and the displacement sensor sliding seat (72) can move left and right along the positioning beam (2) , and fix it at the specified position of the positioning beam (2) by turning the locking screw (73); the displacement sensor (71) measures the stroke, displacement and position information of the lifter during the performance test; A force measuring component (4) and a weight component (3) are movable at the top center of the bottom frame (1). 2. The electric window regulator performance and durability comprehensive test bench according to claim 1, characterized in that the underframe (1) includes a bottom beam (11), and the two sides of the bottom beam (11) are respectively connected to the horizontal T-shaped slot plate (13), a vertical T-shaped slot plate (12) is set in the center of the bottom beam (11); the stand (5) is movably connected to the bottom frame (1) through the transverse T-shaped slot plate (13); The force measurement component (4) and the weight component (3) are respectively connected to the bottom frame (1) through a vertical T-shaped slot plate (12). 3. The electric window regulator performance and durability comprehensive test bench according to claim 1, characterized in that the stand (5) includes a column (52), a drive motor (53), a lead screw (54), The beam positioning block (55) and the bottom of the column (52) are movably arranged in the transverse T-shaped groove plate (13) of the chassis (1); The inner side of the column (52) is movably provided with two beam positioning blocks (55) up and down, and the stand (5) is flexibly connected to one end of the positioning beam (2) through the beam positioning block (55); the beam positioning block (55) can be positioned along the column (52) move up and down, driving the positioning beam (2) to move up and down along the stand (5); The two beam positioning blocks (55) are respectively connected to the lead screw (54) by threads with opposite directions, and the top of the lead screw (54) is provided with a drive motor (53); when the drive motor (53) drives the lead screw (54) to rotate , the lead screw (54) drives the two beam positioning blocks (55) to move up and down reversely along the column (52), thereby adjusting the distance between the two positioning beams (2). 4. The electric window regulator performance and durability comprehensive test bench according to claim 1 or 3, characterized in that, the weight assembly (3) includes a sliding seat (36), a weight (32), a lifting cylinder (34), guide rod (33), the top of sliding seat (36) is provided with lifting cylinder (34), and the piston rod of lifting cylinder (34) withstands the bottom of weight (32), and weight (32) sliding sleeve On the guide rod (33); driven by the lifting cylinder (34), the weight (32) can slide up and down along the guide rod (33); the top of the weight (32) is fixedly provided with an eyebolt (31); The sliding seat (36) is movably connected to the vertical T-shaped groove plate (12) through the sliding key at the bottom to realize the flexible connection between the weight assembly (3) and the chassis (1); the bottom of the sliding seat (36) is provided with rollers (35 ); the weight assembly (3) can move back and forth on the bottom frame (1) along the longitudinal T-shaped groove plate (12) through the rollers (35). 5. The electric window regulator performance and durability comprehensive test bench according to claim 1, characterized in that, the force measurement component (4) includes a force sensor (42), a force sensor fixing seat (43), a force sensor The eye screw (41), the top of the force sensor (42) is connected to the force sensor eye screw (41), the bottom of the force sensor (42) is hinged with the force sensor holder (43); the force sensor (42) measures the closing force of the lifter ; The bottom of the force sensor holder (43) is movably connected to the vertical T-shaped groove plate (12), and the force sensor holder (43) can move back and forth along the longitudinal T-shaped groove plate (12). 6. The electric window regulator performance and durability comprehensive test bench according to claim 1 or 5, characterized in that one side of one of the two positioning beams (2) is provided with Dead point detection assembly (9); dead point detection assembly (9) comprises vertical rod (93), top dead point sensor (91), bottom dead point sensor (92), and vertical rod (93) is movable to be provided with upper The dead center sensor (91), the bottom dead center sensor (92), the top dead center sensor (91), and the bottom dead center sensor (92) can move up and down along the vertical rod (93); the vertical rod (93) is fixed It is arranged on the bottom frame (1); the top dead center sensor (91) judges whether the glass has risen to the top dead center, and the bottom dead center sensor (92) judges whether the glass has dropped to the bottom dead center. 7. The electric window regulator performance and durability comprehensive test bench according to claim 6, characterized in that a water-cooling assembly (10) is provided on the underframe (1), and the water-cooling assembly (10) includes a water pump (101 ), water basin (103), sump (104), water pipe (102), water pump (101) is arranged in the water basin (103), and the water outlet of water pump (101) is connected to water pipe (102); water basin (103) The two sides of the water tank (104) are respectively connected; the outlet of the water pipe (102) is aligned with the motor of the lifter (6) to be tested, the water pump (101) is started, and the cooling water in the water basin (103) passes through the water pump (101) Pumped out, sprayed to the motor casing of the tested lifter (6) through the water pipe (102), collected by the water collection tank (104) and returned to the water basin (103) to form a cooling cycle. 8. The electric window regulator performance and durability comprehensive test bench according to claim 6, characterized in that the top dead center sensor (91), bottom dead center sensor (92), force sensor (42) , the displacement sensor (71) are respectively electrically connected to the programmable logic controller of the electric control part, and the programmable logic controller is respectively electrically connected to the motor forward and reverse control circuit, the lifter motor voltage sensor, the lifter motor current sensor, and the motor forward and reverse The control circuit is electrically connected with the elevator motor; The top dead center sensor (91), the bottom dead center sensor (92), the force sensor (42), and the displacement sensor (71) input signals into the programmable logic controller, and control the lifter motor through the motor forward and reverse control circuit The rotation direction of the glass is controlled to rise or fall; the lifter motor voltage sensor is used to measure the voltage value applied to the lifter motor, and the lifter motor current sensor is used to measure the current value passing through the lifter motor.

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