Load testing device

Abstract

The utility model relates to a load testing device which comprises a box body, a plurality of testing stations are arranged in the box body, the plurality of testing stations comprise a first testing station, a second testing station, a third testing station and a fourth testing station, the first testing station fixes a first motor through a first clamp, and the second testing station fixes a second motor through a second clamp. The second test station fixes a plurality of electromagnetic pumps through a second clamp, the third test station fixes a plurality of second motors through a third clamp, the fourth test station fixes a drainage pump through a fourth clamp, a plurality of binding posts are arranged on the outer side wall of the box body, and the test stations are provided with wiring structures. The plurality of binding posts are respectively connected with the first motor to be tested, the electromagnetic valve, the second motor and the draining pump through electric wires, and the electric wires are arranged in the box body through a wiring structure. According to the utility model, the plurality of test stations are arranged in the box body in a partitioned manner, and the first motor, the electromagnetic valve, the second motor and the drainage pump are respectively fixed, thereby facilitating wiring and distinguishing, avoiding confusion and improving the test efficiency.

Description

TECHNICAL FIELD

[0001] The utility model relates to load test technical field, especially load test device. BACKGROUND

[0002] The motor, electromagnetic valve and drainage pump need to be set on the coffee machine and milk frother, the motor provides the power of grinding and stirring, the electromagnetic valve controls the delivery of liquid, and the drainage pump is used for pumping liquid, and the quality of these parts directly determines the quality of the product, therefore, before the motor, electromagnetic valve and drainage pump are assembled to the coffee machine, the motor, electromagnetic valve and drainage pump need to be tested under load, the performance and reliability of these parts are evaluated, and stable operation under different load conditions is ensured, so that the quality of the coffee machine and milk frother is ensured.

[0003] At present, when load test is carried out, the motor, electromagnetic valve and drainage pump need to be fixed on one side of the test machine, so that the motor, electromagnetic valve and drainage pump do not move during test, the cylindrical motor and drainage pump are difficult to fix, and the square electromagnetic valve is also difficult to fix due to the protruding pins, and the numerous signal lines connected to the motor, electromagnetic valve and drainage pump on the test machine are easy to be confused, resulting in test error. UTILITY MODEL CONTENTS

[0004] In order to solve the problems in the prior art, the utility model provides a load test device.

[0005] The utility model provides a load test device, which comprises a box body, a plurality of test stations are arranged in the box body, the plurality of test stations comprise a first test station, a second test station, a third test station and a fourth test station, the first test station is fixed with a first motor through a first clamp, the second test station is fixed with a plurality of electromagnetic pumps through a second clamp, the third test station is fixed with a plurality of second motors through a third clamp, and the fourth test station is fixed with a drainage pump through a fourth clamp, a plurality of terminal posts are arranged on the outer wall of the box body, the test station is provided with a wiring structure, the plurality of terminal posts are connected with the first motor, electromagnetic valve, second motor and drainage pump to be tested through wires respectively, and the wires are arranged in the box body through the wiring structure.

[0006] In some embodiments, the box body comprises a bottom plate, a cover plate, a first side plate, a second side plate, a third side plate and a fourth side plate, the plurality of test stations are arranged on the bottom plate, the first side plate, the second side plate, the third side plate and the fourth side plate are arranged above the bottom plate, a hinge is arranged between the cover plate and the third side plate, and the cover plate is buckled above the test station through the hinge.

[0007] In some embodiments, the first test station is provided with two first clamps, the first motor is fixed between the two first clamps, the first clamps include a first positioning frame and a first pressing strip, the first positioning frame is fixed with the bottom plate, the first positioning frame is provided with a first positioning groove matched with the shape of the first motor, and the first pressing strip is fixed on the upper end of the first positioning frame. The first motor is clamped in the first positioning groove through the first pressing strip.

[0008] In some embodiments, the second test station is provided with two second clamps, each of which is fixed with a plurality of electromagnetic valves, the second clamps include a positioning plate and a positioning strip, the positioning plate is fixed with the bottom plate, the positioning plate is provided with a plurality of second positioning grooves matched with the shape of the electromagnetic valves at intervals, and the positioning strip is fixed on the upper end of the positioning plate. A plurality of electromagnetic valves are clamped in the second positioning groove through the positioning strip, and the positioning strip is located between the triangular pins of the electromagnetic valves.

[0009] In some embodiments, the third test station is provided with two third clamps, each of which is fixed with a plurality of second motors, the third clamps include a first clamping strip and a second clamping strip arranged in parallel, the first clamping strip and the second clamping strip are fixed with the bottom plate, a plurality of first clamping positions are formed between the first clamping strip and the bottom plate, a plurality of second clamping positions are formed between the second clamping strip and the bottom plate, and the second motor is fixed between the corresponding first clamping position and the second clamping position.

[0010] In some embodiments, the fourth clamp includes a positioning block and a fixing strip, the positioning block is fixed with the bottom plate, the fixing strip is fixed on the upper end of the positioning block, and a clamping opening matched with the shape of the drain pump is arranged between the positioning block and the fixing strip. The drain pump is clamped in the clamping opening through the fixing strip.

[0011] In some embodiments, the plurality of terminal posts are divided into first terminal posts, second terminal posts, third terminal posts and fourth terminal posts, the first terminal posts and the second terminal posts are arranged on the first side plate, the third terminal posts and the fourth terminal posts are arranged on the third side plate, and the first terminal posts, the second terminal posts, the third terminal posts and the fourth terminal posts are respectively connected with the first motor, the electromagnetic valve, the second motor and the drain pump to be tested through wires.

[0012] In some embodiments, the wiring structure includes a first wiring groove, a second wiring groove, a third wiring groove and a fourth wiring groove opened on the bottom plate, the first wiring groove is arranged between the first test station and the first side plate, the second wiring groove is arranged between the second test station and the first side plate, the third wiring groove is arranged between the third test station and the third side plate, and the fourth wiring groove is arranged between the fourth test station and the third side plate.

[0013] In some embodiments, a plurality of heat dissipation holes are formed in the second side plate and the fourth side plate.

[0014] In some embodiments, a buckle is arranged between the cover plate, the second side plate and the fourth side plate.

[0015] Compared with the prior art, the utility model has the beneficial effects that: a plurality of test stations are arranged in the box, the first motor, the electromagnetic valve, the second motor and the drainage pump are fixed respectively, wiring and distinction are facilitated, confusion is avoided, the first motor, the plurality of electromagnetic valves, the plurality of second motors and the drainage pump can be carried through one box, the terminal post can be quickly disassembled with the signal line, and test efficiency is improved. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is the internal structure schematic view of the load test device of the embodiment of the application.

[0017] Figure 2 It is one of the three-dimensional structure schematic views of the load test device of the embodiment of the application.

[0018] Figure 3 It is the second three-dimensional structure schematic view of the load test device of the embodiment of the application.

[0019] Figure 4 It is the three-dimensional structure schematic view of the plurality of test stations of the embodiment of the application.

[0020] Figure 5 It is the three-dimensional structure schematic view of the terminal post of the embodiment of the application.

[0021] Mark: 1, box; 11, bottom plate; 12, cover plate; 13, first side plate; 14, second side plate; 15, third side plate; 16, fourth side plate; 17, heat dissipation hole; 18, hinge; 19, buckle;

[0022] 2, first clamp; 21, first positioning frame; 22, first pressing strip; 23, first positioning groove;

[0023] 3, second clamp; 31, positioning plate; 32, positioning strip; 33, second positioning groove;

[0024] 4, third clamp; 41, first clamping strip; 42, second clamping strip; 43, first clamping position; 44, second clamping position;

[0025] 5, fourth clamp; 51, positioning block; 52, fixing strip; 53, clamping opening;

[0026] 6, terminal post; 61, first terminal post; 62, second terminal post; 63, third terminal post; 64, fourth terminal post; 65, terminal rod; 66, nut; 67, nut; 68, gasket; 69, conductive sheet;

[0027] 71, first test station; 72, second test station; 73, third test station; 74, fourth test station;

[0028] 81, first wiring slot; 82, second wiring slot; 83, third wiring slot; 84, fourth wiring slot;

[0029] 91, first motor; 92, solenoid valve; 93, second motor; 94, drainage pump; 95, pin. DETAILED DESCRIPTION

[0030] The specific embodiments of the utility model are described with reference to the drawings.

[0031] Reference Figure 1 , the internal structure of the load test device is shown in the figure, the cuboid box 1 is used as a carrier, a plurality of motors, a plurality of solenoid valves 92 and a drainage pump 94 are fixed inside the box 1, a plurality of terminal posts 6 are arranged on the outer wall of the box 1, and the terminal posts 6 can be connected with a test machine (not shown in the drawing) through signal lines.

[0032] Reference Figures 1 to 5 A load test device, comprising a box 1, a plurality of test stations are arranged in the box 1, the plurality of test stations comprise a first test station 71, a second test station 72, a third test station 73 and a fourth test station 74, the first test station 71 is fixed with a first motor 91 through a first clamp 2, the second test station 72 is fixed with a plurality of solenoid pumps through a second clamp 3, the third test station 73 is fixed with a plurality of second motors 93 through a third clamp 4, and the fourth test station 74 is fixed with a drainage pump 94 through a fourth clamp 5. A plurality of terminal posts 6 are arranged on the outer wall of the box 1, the test station is provided with a wiring structure, the plurality of terminal posts 6 are respectively connected with the first motor 91, the solenoid valve 92, the second motor 93 and the drainage pump 94 to be tested through wires, and the wires are arranged inside the box 1 through the wiring structure.

[0033] The load test device of the present application is provided with a plurality of test stations in the box 1, the first motor 91, the solenoid valve 92, the second motor 93 and the drainage pump 94 are fixed respectively, the wiring is convenient and the distinction is avoided, the first motor 91, the plurality of solenoid valves 92, the plurality of second motors 93 and the drainage pump 94 can be carried through a box 1, the terminal post 6 can be quickly disassembled with the signal line, and the test efficiency is improved.

[0034] In order to facilitate the installation of the box 1, in the embodiment, reference Figures 1 to 3, the box 1 includes a bottom plate 11, a cover plate 12, a first side plate 13, a second side plate 14, a third side plate 15 and a fourth side plate 16, a plurality of test stations are arranged on the bottom plate 11, the first side plate 13, the second side plate 14, the third side plate 15 and the fourth side plate 16 are arranged above the bottom plate 11, the cover plate 12 is arranged between the third side plate 15 and the cover plate 12 through the hinge 18, and the cover plate 12 is clamped above the test station through the hinge 18.

[0035] It can be understood that, in this way, the test station is arranged on the bottom plate 11, the first motor 91, the electromagnetic valve 92, the second motor 93 and the drain pump 94 are conveniently installed, the first side plate 13, the second side plate 14, the third side plate 15 and the fourth side plate 16 are arranged above the bottom plate 11, the cover plate 12 is clamped on the four side plates, and the test station is ensured to have sufficient space to install the first motor 91, the electromagnetic valve 92, the second motor 93 and the drain pump 94, and the bottom plate 11, the cover plate 12 and the four side plates form the cuboid box 1.

[0036] In order to fix the first motor 91, in the embodiment, referring to Figure 1 and Figure 4 , the first test station 71 is provided with two first clamps 2, the first motor 91 is fixed between the two first clamps 2, the first clamp 2 includes a first positioning frame 21 and a first pressing strip 22, the first positioning frame 21 is fixed with the bottom plate 11, the first positioning frame 21 is provided with a first positioning groove 23 matched with the shape of the first motor 91, and the first pressing strip 22 is fixed on the upper end of the first positioning frame 21 through a screw. The first motor 91 is clamped in the first positioning groove 23 through the first pressing strip 22.

[0037] It can be understood that, in this way, the first motor 91 has a reduction box, so that the overall shape of the first motor 91 is irregular, the first clamp 2 avoids the reduction box, the two first clamps 2 clamp the main machine part of the first motor 91, the main machine part of the first motor 91 is positioned through the first positioning groove 23 matched in shape, and the main machine part of the first motor 91 is tightly pressed through the first pressing strip 22, so that the first motor 91 is stably fixed on the first test station 71.

[0038] In order to fix the electromagnetic valve 92, in the embodiment, referring to Figure 1 and Figure 4 , the second test station 72 is provided with two second clamps 3, each second clamp 3 is fixed with a plurality of electromagnetic valves 92, the second clamp 3 includes a positioning plate 31 and a positioning strip 32, the positioning plate 31 is fixed with the bottom plate 11, the positioning plate 31 is provided with a plurality of second positioning grooves 33 matched with the shape of the electromagnetic valve 92, the positioning strip 32 is fixed on the upper end of the positioning plate 31 through a screw, and the plurality of electromagnetic valves 92 are clamped in the second positioning groove 33 through the positioning strip 32. The positioning strip 32 is located between the triangular pins 95 of the electromagnetic valve 92.

[0039] It can be understood that, thus arranged, the electromagnetic valve 92 has a smaller volume, by placing five electromagnetic valves 92 side by side in the five second positioning grooves 33 of the positioning plate 31, by pressing the five electromagnetic valves 92 together through a positioning strip 32, by fixing ten electromagnetic valves 92 on the second test station 72 through two second clamps 3, the test efficiency of the electromagnetic valve 92 can be greatly improved.

[0040] In order to fix the second motor 93, in the embodiment, referring to Figure 1 and Figure 4 , the third test station 73 is provided with two third clamps 4, each of which fixes a plurality of second motors 93, and the third clamp 4 comprises a first clamping strip 41 and a second clamping strip 42 arranged in parallel, both of which are fixed to the bottom plate 11 through screws, and a plurality of first clamping sites 43 are formed between the first clamping strip 41 and the bottom plate 11, and a plurality of second clamping sites 44 are formed between the second clamping strip 42 and the bottom plate 11, and the second motor 93 is fixed between the corresponding first clamping site 43 and the second clamping site 44.

[0041] It can be understood that, thus arranged, the second motor 93 is cylindrical, the first clamping strip 41 has an arc-shaped groove at the first clamping site 43, and the second clamping strip 42 has an arc-shaped groove at the second clamping site 44, the first clamping strip 41 and the second clamping strip 42 are fixed to the bottom plate 11 through screws, so as to fix the second motor 93 on the ground test station, and two third clamps 4 can fix six second motors 93, thereby greatly improving the test efficiency of the second motor 93.

[0042] In order to fix the drainage pump 94, in the embodiment, referring to Figure 1 and Figure 4 , the fourth clamp 5 comprises a positioning block 51 and a fixing strip 52, the positioning block 51 is fixed to the bottom plate 11, and the fixing strip 52 is fixed to the upper end of the positioning block 51 through a screw, and a clamping opening 53 matched with the shape of the drainage pump 94 is arranged between the positioning block 51 and the fixing strip 52, and the drainage pump 94 is clamped in the clamping opening 53 through the fixing strip 52.

[0043] It can be understood that, thus arranged, the drainage pump 94 is cylindrical and long, the clamping opening 53 between the positioning block 51 and the fixing strip 52 is matched with the shape of the drainage pump 94, the middle part of the drainage pump 94 is located in the clamping opening 53, the weight distribution of the drainage pump 94 on the fourth clamp 5 is ensured to be uniform, the drainage pump 94 can be stably fixed on the fourth test station 74 through one fourth clamp 5, the use of clamps is reduced, and the loading and unloading efficiency of the drainage pump 94 is improved.

[0044] In order to facilitate wiring, in the embodiment, referring to Figures 1 to 3The plurality of terminals 6 are divided into first terminals 61, second terminals 62, third terminals 63 and fourth terminals 64. The first terminals 61 and the second terminals 62 are arranged on the first side plate 13, and the third terminals 63 and the fourth terminals 64 are arranged on the third side plate 15. The first terminals 61, the second terminals 62, the third terminals 63 and the fourth terminals 64 are respectively connected to the first motor 91, the electromagnetic valve 92, the second motor 93 and the drainage pump 94 to be tested by wires.

[0045] It should be further explained that, referring to Figure 5 The terminal 6 comprises a terminal rod 65, a nut 66, a nut 67, a gasket 68, a conductive sheet 69, and a through hole in the first side plate 13 and the second side plate 14. The terminal rod 65 comprises a first threaded section and a second threaded section. The nut 66 is sleeved on the first threaded section, and the gasket 68, the two nuts 67 and the conductive sheet 69 are sleeved on the second threaded section. The diameter of the first threaded section is larger than that of the second threaded section. The second threaded section is arranged in the through hole and is fixed in the through hole under the limitation of the first threaded section, the gasket 68 and the nut 67. The second threaded section and the nut 66 are outside the box body 1. The signal line of the external testing instrument is clamped between the nut 66 and the outer wall of the box body 1 through the fork terminal and is connected with the terminal rod 65. The conductive sheet 69 is inside the box body 1. The conductive sheet 69 is clamped between the two nuts 67. The terminal 6 is connected with the wire through the conductive sheet 69.

[0046] It can be understood that, in this way, the distance between the first terminal 61 and the second terminal 62 is large, the distance between the adjacent two second terminals 62 is the same, the first terminal 61 is located on the left side of the first side plate 13, the wire of the first terminal 61 extends to the first test station 71 through the first wiring slot 81, the wire of the second terminal 62 extends to the second test station 72 through the second wiring slot 82, the distance between the third terminal 63 and the fourth terminal 64 is large, the distance between the adjacent two third terminals 63 is the same, the fourth terminal 64 is located on the right side of the fourth side plate 16, the wire of the third terminal 63 extends to the third test station 73 through the third wiring slot 83, and the wire of the fourth terminal 64 extends to the fourth test station 74 through the fourth wiring slot 84.

[0047] In order to facilitate the wiring of the wire, in the embodiment, referring to Figure 1 and Figure 4The wiring structure comprises a first wiring groove 81, a second wiring groove 82, a third wiring groove 83 and a fourth wiring groove 84 which are formed on the bottom plate 11, the first wiring groove 81 is arranged between the first test station 71 and the first side plate 13, the second wiring groove 82 is arranged between the second test station 72 and the first side plate 13, the third wiring groove 83 is arranged between the third test station 73 and the third side plate 15, and the fourth wiring groove 84 is arranged between the fourth test station 74 and the third side plate 15.

[0048] It should be further explained that, in order to better guide the wire, the wiring groove is designed according to the position of the test station and the terminal post 6, the first wiring groove 81 is in the shape of "I", the first wiring groove 81 is arranged along the edge of the bottom plate 11 close to the fourth side plate 16, avoiding the second test station 72; the second wiring groove 82 is in the shape of "T", the horizontal section of the second wiring groove 82 is arranged along the edge of the bottom plate 11 close to the first side plate 13, and the vertical end is between the second test station 72 and the third test station 73; the third wiring groove 83 is in the shape of "E", the vertical section of the third wiring groove 83 is arranged along the edge of the bottom plate 11 close to the second side plate 14, among the three horizontal sections, one horizontal section is arranged along the edge of the bottom plate 11 close to the third side plate 15, and the other two horizontal sections extend to the two third clamps 4; the fourth wiring groove 84 is in the shape of "L", the horizontal section of the fourth wiring groove 84 is arranged along the edge of the bottom plate 11 close to the third side plate 15, and the vertical end is arranged between the first test station 71 and the fourth test station 74.

[0049] It can be understood that, in this way, the pin 95 of the first motor 91 faces the first side plate 13, the pin 95 of the electromagnetic valve 92 faces the cover plate 12, the pin 95 of the second motor 93 faces the fourth side plate 16, the pin 95 of the drainage pump 94 faces the first side plate 13, the wire extended by the pin 95 of the first motor 91 is wired to the first terminal post 61 along the first wiring groove 81, the wires extended by the pins 95 of the five electromagnetic valves 92 close to the second side plate 14 are wired to the second terminal post 62 on the left through the left horizontal section of the second wiring groove 82, the wires extended by the pins 95 of the five electromagnetic valves 92 close to the first test station 71 are wired to the second terminal post 62 on the right through the vertical end and the right horizontal section of the second wiring groove 82, the wires extended by the pins 95 of the six second motors 93 are wired to the third terminal post 63 through the horizontal section and the vertical end of the third wiring groove 83, and the wire extended by the pin 95 of the drainage pump 94 is wired to the fourth terminal post 64 through the fourth wiring groove 84, so that the wires are not chaotic, the wires corresponding to the first motor 91, the electromagnetic valve 92, the second motor 93 and the drainage pump 94 are fixed in different areas, avoiding wrong connection, and ensuring test accuracy.

[0050] In order to dissipate heat during testing, in this embodiment, reference is made to Figure 2 and Figure 3A plurality of heat dissipation holes 17 are formed on the second side plate 14 and the fourth side plate 16.

[0051] It can be understood that, in this way, the heat dissipation holes 17 of the second side plate 14 are arranged opposite to the heat dissipation holes 17 of the fourth side plate 16, and a convection is formed, so that the first motor 91, the electromagnetic valve 92, the second motor 93 and the drainage pump 94 in the box body 1 are cooled during the test process, and the working conditions of the first motor 91, the electromagnetic valve 92, the second motor 93 and the drainage pump 94 are better simulated.

[0052] In order to protect the first motor 91, the electromagnetic valve 92, the second motor 93 and the drainage pump 94, in the embodiment, the cover plate 12 is arranged between the second side plate 14 and the fourth side plate 16. Figure 2 and Figure 3 A buckle 19 is arranged between the cover plate 12 and the second side plate 14 and the fourth side plate 16.

[0053] It can be understood that, in this way, the cover plate 12 is movably connected to the third side plate 15 through the hinge 18, after the first motor 91, the electromagnetic valve 92, the second motor 93 and the drainage pump 94 are fixed to the test station, the pins 95 of the first motor 91, the electromagnetic valve 92, the second motor 93 and the drainage pump 94 are welded with the corresponding wires, the cover plate 12 can be buckled and locked through the buckle 19, the box body 1 is stable, and the first motor 91, the electromagnetic valve 92, the second motor 93 and the drainage pump 94 can be well protected by the box body 1, and the box body 1 is convenient to carry.

[0054] The load test device of the embodiment of the application is used with a test machine, before the test, the first motor 91, the electromagnetic valve 92, the second motor 93 and the drainage pump 94 are fixed to the test station of the box body 1, one end of the wire is welded with the conductive sheet 69 of the corresponding terminal post 6, the welding point of the wire and the conductive sheet 69 does not change, the other end of the wire is welded with the corresponding pin 95 of the first motor 91, the electromagnetic valve 92, the second motor 93 and the drainage pump 94 (after the test, the welding point on the pin 95 of the first motor 91, the electromagnetic valve 92, the second motor 93 and the drainage pump 94 is melted), after the cover plate 12 is fixed, the box body 1 can be carried to the test machine, the signal line of the test machine is connected to the corresponding terminal post 6, and the load test is carried out, when the first motor 91, the electromagnetic valve 92, the second motor 93 and the drainage pump 94 in one box body 1 are tested, the first motor 91, the electromagnetic valve 92, the second motor 93 and the drainage pump 94 can be installed on another box body 1, after one box body 1 is tested, the next box body 1 is quickly replaced, and the test efficiency is greatly improved.

[0055] The above is not any limitation on the technical range of the utility model, any modification, equivalent change and modification made to the above embodiment according to the technical essence of the utility model still belongs to the range of the technical scheme of the utility model.

Claims

1. A load testing device, characterized by, The utility model provides a test box, including box, be provided with a plurality of test stations in the box, the plurality of test stations include first test station, second test station, third test station and fourth test station, first test station fixes first motor through first clamp, second test station fixes a plurality of electromagnetic pump through second clamp, third test station fixes a plurality of second motor through third clamp, fourth test station fixes drainage pump through fourth clamp, the lateral wall of box is provided with a plurality of binding posts, and the test station is provided with wiring structure, and a plurality of binding posts are connected with first motor, electromagnetic valve, second motor, drainage pump to be tested through wire respectively, and the wire is arranged in the box inside through wiring structure.

2. The load testing device of claim 1, wherein, The box includes a bottom plate, a cover plate, a first side plate, a second side plate, a third side plate, and a fourth side plate. The plurality of test stations are arranged on the bottom plate. The first side plate, the second side plate, the third side plate, and the fourth side plate are arranged above the bottom plate. The cover plate is hingedly connected to the third side plate. The cover plate is hingedly connected above the test stations.

3. The load testing device of claim 2, wherein, The first test station is provided with two first clamps. The first motor is fixed between the two first clamps. The first clamp includes a first positioning frame and a first pressing strip. The first positioning frame is fixed to the bottom plate. The first positioning frame is provided with a first positioning groove matched with the shape of the first motor. The first pressing strip is fixed to the upper end of the first positioning frame. The first motor is clamped in the first positioning groove by the first pressing strip.

4. The load testing device of claim 2, wherein, The second test station is provided with two second clamps. Each second clamp is fixed with a plurality of electromagnetic valves. The second clamp includes a positioning plate and a positioning strip. The positioning plate is fixed to the bottom plate. The positioning plate is provided with a plurality of second positioning grooves matched with the shape of the electromagnetic valves. The positioning strip is fixed to the upper end of the positioning plate. The plurality of electromagnetic valves are clamped in the second positioning grooves by the positioning strip. The positioning strip is located between the triangular pins of the electromagnetic valves.

5. The load testing device of claim 2, wherein, The third test station is provided with two third clamps. Each third clamp is fixed with a plurality of second motors. The third clamp includes a first clamping strip and a second clamping strip arranged in parallel. The first clamping strip and the second clamping strip are fixed to the bottom plate. A plurality of first clamping sites are formed between the first clamping strip and the bottom plate. A plurality of second clamping sites are formed between the second clamping strip and the bottom plate. The second motor is fixed between the corresponding first clamping site and the second clamping site.

6. The load testing device of claim 2, wherein, The fourth clamp includes a positioning block and a fixing strip. The positioning block is fixed to the bottom plate. The fixing strip is fixed to the upper end of the positioning block. A clamping opening matched with the shape of the drainage pump is arranged between the positioning block and the fixing strip. The drainage pump is clamped in the clamping opening by the fixing strip.

7. The load testing device of claim 2, wherein, The plurality of binding posts are divided into first binding posts, second binding posts, third binding posts, and fourth binding posts. The first binding posts and the second binding posts are arranged on the first side plate. The third binding posts and the fourth binding posts are arranged on the third side plate. The first binding posts, the second binding posts, the third binding posts, and the fourth binding posts are connected with the first motor, the electromagnetic valve, the second motor, and the drainage pump to be tested by wires respectively.

8. The load testing device of claim 7, wherein, The wiring structure comprises a first wiring slot, a second wiring slot, a third wiring slot and a fourth wiring slot which are arranged on the bottom plate, the first wiring slot is arranged between the first test station and the first side plate, the second wiring slot is arranged between the second test station and the first side plate, the third wiring slot is arranged between the third test station and the third side plate, and the fourth wiring slot is arranged between the fourth test station and the third side plate.

9. The load testing device of claim 2, wherein, A plurality of heat dissipation holes are arranged on the second side plate and the fourth side plate.

10. The load testing device of claim 2, wherein, The cover plate is provided with a buckle between the second side plate and the fourth side plate.

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