An adjustable load test box

Abstract

The present invention relates to the technical field of load test boxes, and discloses an adjustable load test box. The present invention comprises: a chassis and a bottom plate suspended in the chassis, wherein a filter mechanism is provided in the chassis, wherein the filter mechanism comprises a drive frame having a concave overall structure and a filter belt provided on the drive frame and capable of circulating transmission, wherein the drive frame is capable of adjusting the filter belt, and the filter belt is capable of filtering dust and moisture in the air, and wherein two groups of fans for air intake and exhaust are provided on the drive frame, respectively. The present invention can achieve dust and moisture filtering functions while ensuring heat dissipation, thereby reducing the impact of moisture on internal components, and can also be adjusted to a single dust filtering mode as needed, thereby improving ventilation and heat dissipation effects.

Description

Technical Field

[0001] The present invention relates to the technical field of load test boxes, and in particular to an adjustable load test box. Background Art

[0002] A load test box, commonly known as a load box or load cabinet, is a type of power load testing equipment. It is mainly used to perform load tests on power equipment such as generators, battery packs, and power boards, simulating the load of the power equipment in actual applications and testing the performance of the power equipment. Since the load box generates a large amount of heat during operation, if the heat cannot be dissipated in a timely and effective manner, it may cause equipment performance degradation or failure. Therefore, the load box is generally equipped with a heat dissipation mechanism, and its heat dissipation method is generally achieved through the conversion of airflow, and this heat dissipation method is usually called air cooling.

[0003] The principle of air cooling is to send outside air into the equipment and then expel it, introducing external cold air while discharging internal heat. However, when the equipment is in a humid environment or encounters the rainy season, this cooling method is also likely to bring moisture into the equipment. Moisture is more damaging to the components inside the load box. It not only accelerates the corrosion of the power components, but also reduces the insulation performance of the air, causing the insulating materials in the power components to absorb moisture, resulting in reduced insulation resistance, and thus increased leakage current. In severe cases, it may cause insulation breakdown and cause electrical failures. Therefore, ensuring normal heat dissipation of the load test box while suppressing the entry of external moisture has become an urgent problem that existing load test boxes need to solve. Summary of the Invention

[0004] In order to solve the above technical problems, the present invention provides an adjustable load test box.

[0005] The present invention is implemented by the following technical solution: a chassis and a bottom plate suspended in the chassis, wherein a filtering mechanism is provided in the chassis, wherein the filtering mechanism includes a drive frame having a concave overall structure and a filter belt provided on the drive frame and capable of circulating transmission, wherein the drive frame is capable of adjusting the filter belt, and the filter belt is capable of filtering dust and moisture in the air, and wherein the drive frame is provided with two sets of fans for air intake and exhaust, respectively;

[0006] The filter belt is composed of two filter meshes of equal length and two moisture-absorbing belts of equal length. The two filter meshes and the two moisture-absorbing belts are spaced apart and arranged opposite to each other on the filter belt, and the positions of the two moisture-absorbing belts are respectively opposite to the two groups of fans. The moisture-absorbing belt is composed of two gauze meshes and a sponge layer between the two gauze meshes, so that the moisture-absorbing belt can not only absorb moisture in the air but also ensure its own ventilation.

[0007] Preferably, the driving frame includes a front frame and a tail frame slidably installed in the chassis, a plurality of connecting rods are provided on the front frame and the tail frame, two driving rollers and four shaping rollers are provided on the front frame and the tail frame, and a motor for driving the driving rollers to rotate is provided on the front frame, and the filter belt is arranged on the two driving rollers and in contact with the four shaping rollers.

[0008] Preferably, the chassis is provided with a concave opening, the front frame is provided with a concave sealing plate adapted to the concave opening, and the concave sealing plate is provided with two handles, so that the entire filtering mechanism can be conveniently taken out of the chassis for maintenance.

[0009] Preferably, two pressing rollers distributed up and down are rotatably provided on the front frame and the tail frame, and the filter belt passes between the two pressing rollers, so that when the filter belt is transmitted, the two pressing rollers can assist in squeezing out water stains in the filter belt.

[0010] Preferably, brush rollers are provided on the front frame and the tail frame, and the brush rollers are in contact with the filter belt, so that the brush rollers can clean the filter belt in transmission.

[0011] Preferably, the brush roller is rotatably connected to the front frame and the tail frame, and the brush roller and the pressure roller below are both provided with circular gears, which are meshed with each other, so that the pressure roller can drive the brush roller to transfer in the opposite direction of the filter belt transmission.

[0012] Preferably, a material guide trough is provided at the bottom of the chassis, and the material guide trough is located directly below the pressure roller and the brush roller, so as to discharge the dust and water stains cleaned from the filter belt.

[0013] Preferably, the sponge layer is provided with a plurality of inclined perforations distributed in an array, so as to further improve the ventilation effect of the sponge layer without affecting the dehumidification performance of the sponge layer.

[0014] Preferably, rotatable fixing frames are provided on both inner walls of the tail frame, the other ends of the two fixing frames are connected to the front frame, and the two sets of fans are fixedly connected to the corresponding fixing frames respectively.

[0015] Preferably, a power socket is provided on the inner wall of the chassis, and a power plug is provided on the tail frame. The power plug is inserted into the power socket to supply power to the entire filtering mechanism, and also allows the entire filtering mechanism to be arranged in a modular form in the chassis.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] The driving frame and the filter belt cooperate to form a filter mechanism with an overall concave structure. It can not only filter dust and moisture, so that the load test box does not need to worry about the influence of moisture, but also can switch the positions of the two moisture-absorbing belts, so that one moisture-absorbing belt is performing dehumidification work while the other moisture-absorbing belt can be dried with the help of the heat discharged by the load test box, so that the two moisture-absorbing belts can be reused in turn without worrying about the problem of adsorbed humidity saturation. Moreover, when the above functions are realized, the entire filter mechanism has a compact structure and does not occupy too much space in the load test box. It can also be easily removed from the load test box for maintenance, thus combining the advantages of strong functionality, small space occupation and easy maintenance.

[0018] The drive rack can not only switch the positions of the two moisture absorption belts, but also adjust the filter belt so that the positions of the air inlet and outlet correspond to the filter screen. This allows the load test box to be switched from dust and moisture filtering mode to single dust filtering mode when used in drier seasons or areas, thereby increasing ventilation and further improving heat dissipation, thereby improving applicability.

[0019] By arranging a brush roller and two pressure rollers on the driving frame, the filter screen on the filter belt can be cleaned and the moisture-absorbing belt can be dehydrated simultaneously when the positions of the two moisture-absorbing belts are switched. This not only ensures the ventilation of the filter screen and prevents it from being affected by dust, but also further improves the drying and reuse efficiency of the moisture-absorbing belt. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a diagram showing the overall structure of the adjustable load test box of the present invention;

[0021] Figure 2 This is a disassembled display diagram of the adjustable load test box of the present invention;

[0022] Figure 3 This is an overall display diagram of the filter mechanism in the adjustable load test box of the present invention;

[0023] Figure 4 This is a disassembled display diagram of the filter mechanism in the adjustable load test box of the present invention;

[0024] Figure 5 This is a front-view disassembled display diagram and a partial enlarged diagram of the drive frame in the filtering mechanism;

[0025] Figure 6 This is a rear-view disassembled display of the drive frame in the filtering mechanism;

[0026] Figure 7 This is a front-view planar cross-sectional illustration of the adjustable load test box of the present invention;

[0027] Figure 8 This is a diagram showing the layout between the filter belt and the connecting rod, drive roller, and shaping roller;

[0028] Figure 9 The layout diagram of the filter screen and moisture absorption belt in the filter belt and the partial enlarged display diagram;

[0029] Figure 10 Schematic diagram of ventilation of the adjustable load test box of the present invention.

[0030] Description of main symbols:

[0031] 1. Chassis; 2. Bottom plate; 3. Front frame; 4. Tail frame; 5. Connecting rod; 6. Drive roller; 7. Shaping roller; 8. Concave sealing plate; 9. Motor; 10. Worm; 11. Worm gear; 12. Filter belt; 121. Filter screen; 122. Moisture-absorbing belt; 1221. Gauze; 1222. Sponge layer; 13. Fixed frame; 14. Fan; 15. Press roller; 16. Brush roller; 17. Material guide trough; 18. Power plug. DETAILED DESCRIPTION

[0032] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0033] Please combine Figures 1 to 10 , an adjustable load test box, comprising: a chassis 1 and a bottom plate 2 suspended in the chassis 1, the two ends of the bottom plate 2 being fixedly connected to the front and rear inner walls of the chassis 1 respectively. Since the bottom plate 2 is suspended in the chassis 1, it does not conflict with the filtering mechanism in the chassis 1. Heat dissipation holes are provided on both sides of the chassis 1, wherein the heat dissipation holes on the left are air inlets, and the heat dissipation holes on the right are air outlets. A filtering mechanism is provided in the chassis 1, and the filtering mechanism comprises a drive frame with a concave overall structure and a filter belt 12 that is arranged on the drive frame and can be circulated and driven. The drive frame can adjust the filter belt 12, and the filter belt 12 can filter dust and moisture in the air. Two groups of fans 14 for air intake and exhaust are provided on the drive frame respectively;

[0034] The filter belt 12 is composed of two filter screens 121 of equal length and two moisture absorbing belts 122 of equal length. The two filter screens 121 and the two moisture absorbing belts 122 are spaced apart and arranged on the filter belt 12, and the positions of the two moisture absorbing belts 122 are respectively opposite to the two sets of fans 14. The moisture absorbing belt 122 is composed of two gauze meshes 1221 and a sponge layer 1222 located between the two gauze meshes 1221. In this way, the moisture absorbing belt 122 can not only absorb moisture in the air, but also ensure its own ventilation. In addition, the sponge layer 1222 is provided with a plurality of inclined perforations distributed in an array. The inclined perforations allow air to fully contact the sponge layer 1222 and be discharged along the pores after contact. In this way, the dehumidification performance of the sponge layer 1222 is not affected, and its ventilation effect is further improved, thereby reducing the heat dissipation of the load test box.

[0035] The drive frame can convert the positions of the two hygroscopic belts 122, so that while one of the hygroscopic belts 122 is performing dehumidification work, the other hygroscopic belt 122 can be dried with the help of the heat discharged by the load test box, so that the two hygroscopic belts 122 can be reused in turn without worrying about the problem of adsorbed humidity saturation. Moreover, since the entire filter belt 12 is concave in layout, although the two hygroscopic belts 122 on the filter belt 12 correspond to the two groups of fans 14 respectively, they cannot be completely aligned when the position is converted. Therefore, the area of ​​the two hygroscopic belts 122 needs to be slightly larger than the area of ​​the two groups of fans 14, so as to leave a redundant area for misalignment, so that the two hygroscopic belts 122 can still be aligned with the two groups of fans 14 after the position is converted.

[0036] The driving frame includes a front frame 3 and a tail frame 4 that are slidably mounted in the chassis 1. Two slide rails are provided on the bottom inner wall of the chassis 1. Two slide seats are provided at the bottom of the front frame 3 and the tail frame 4. The four slide seats are slidably connected to the two slide rails respectively, so that the filtering mechanism can be stably set in the chassis 1 and can be easily taken out from the chassis 1. A plurality of connecting rods 5 are provided on the front frame 3 and the tail frame 4. Both ends of the connecting rod 5 are provided with threads, one end of which is threadedly connected to the tail frame 4, and the other end passes through the front frame 3 and is fixed by a nut, so that the entire driving frame can be easily disassembled, so that the filter belt 12 can be easily maintained and replaced later. Two driving rollers 6 and four shaping rollers are provided on the front frame 3 and the tail frame 4. Roller 7, wherein the surface of the driving roller 6 is provided with a rubber layer, which can increase the friction between it and the filter belt 12, thereby ensuring normal transmission. A motor 9 and a worm gear 11 are provided on the front frame 3, and a worm 10 meshing with the worm gear 11 is provided on the output shaft of the motor 9, and one end of the worm gear 11 is provided with a hexagonal groove, and the corresponding end of the driving roller 6 is hexagonal and extends into the hexagonal groove, so that the entire driving frame can be disassembled and assembled normally, and the normal transmission of the motor 9 to the driving roller 6 can also be realized. The filter belt 12 is sleeved on the two driving rollers 6 and contacts with the four shaping rollers 7. The four shaping rollers 7 can limit the overall layout of the filter belt 12 to make it concave, so as to ensure that it is more compact and does not take up too much space.

[0037] Combine Figure 1 and Figure 2 A concave opening is provided on the chassis 1, which serves as the inlet and outlet of the filter mechanism. A concave sealing plate 8 is provided on the front frame 3 to match the concave opening. The concave sealing plate 8 serves as a door for the concave opening. Two handles are provided on the concave sealing plate 8, so that the entire filter mechanism can be easily taken out of the chassis 1 for maintenance.

[0038] Two pressing rollers 15 are rotatably provided on the front frame 3 and the tail frame 4 and are distributed up and down. The filter belt 12 passes between the two pressing rollers 15 so that the two pressing rollers 15 can help squeeze out water stains in the filter belt 12 when the filter belt 12 is transmitted.

[0039] Combine Figure 7 and Figure 8 A brush roller 16 is rotatably provided on the front frame 3 and the tail frame 4. The brush roller 16 is in contact with the filter belt 12. The brush roller 16 and the pressure roller 15 below are both provided with circular gears. The two circular gears are engaged with each other, so that the pressure roller 15 can drive the brush roller 16 to transfer in the opposite direction of the transmission of the filter belt 12, which can not only clean the filter belt 12 in transmission, but also ensure the cleaning effect.

[0040] Combine Figure 7A material guide trough 17 is provided at the bottom of the chassis 1 , and the material guide trough 17 is located directly below the pressure roller 15 and the brush roller 16 , so as to discharge the dust and water stains cleaned from the filter belt 12 .

[0041] Combine Figure 4 and Figure 5 , a rotatable fixing frame 13 is provided on the inner walls of both sides of the tail frame 4, and the fixing frame 13 is composed of a rotating seat mounted on the tail frame 4 and a frame. The fan 14 is mounted on the frame, wherein the frame part is connected to the front frame 3 by screws. When the drive frame needs to be disassembled to replace the filter belt 12 thereon, it is only necessary to remove the fixing frame 13 from the front frame 3 and turn it to the other side with the rotating seat as the axis, and then remove the front frame 3, so that the disassembly and assembly between the fan 14 and the tail frame 4 can be avoided, so that the replacement and maintenance of the filter belt 12 will not be too cumbersome.

[0042] Combine Figure 6 A power supply socket is provided on the inner wall of the chassis 1, and a power supply plug 18 is provided on the tail frame 4. The power supply plug 18 is inserted into the power supply socket to realize power supply to the entire filtering mechanism, and also allows the entire filtering mechanism to be arranged in the chassis 1 in a modular form.

[0043] The implementation principle of an adjustable load test box in the embodiment of the present application is:

[0044] The heat dissipation holes on the left side of chassis 1 are air inlets, and the heat dissipation holes on the right side of chassis 1 are air outlets;

[0045] Start the two sets of fans 14. The left fan 14 is responsible for sending external air into the chassis 1. When the external air enters the chassis 1 through the air inlet, it first passes through the filter 121 on the filter belt 12 to filter dust in the air. Then, after the air passes through the moisture absorption belt 122, the moisture in the air is absorbed by the sponge layer 1222, so that the moisture in the air does not enter the load test box, thereby ensuring the normal heat dissipation of the load test box while preventing it from being affected by moisture.

[0046] In order to prevent the moisture absorption belt 122 at the air inlet from being saturated with humidity, the motor 9 is started. The motor 9 drives the corresponding driving roller 6 to rotate through the worm 10 and the worm gear 11. The driving roller 6 starts to transmit the filter belt 12 by rotating, thereby changing the position of the moisture absorption belt 122. The positions of the two moisture absorption belts 122 are swapped, so that the adsorption-saturated moisture absorption belt 122 is transferred to the air outlet position. At this time, the heat flow inside the load test box can pass through the adsorption-saturated moisture absorption belt 122 when being discharged through the air outlet, and can be dried by using the heat discharged by the load test box, so as to circulate, so that the two moisture absorption belts 122 can be adjusted to cycle in turn for moisture adsorption.

[0047] At the same time, when the saturated moisture-absorbing belt 122 passes through the two pressing rollers 15, the two pressing rollers 15 can squeeze out the water stains in the sponge layer 1222 inside it, so that it can be dehydrated before drying, thereby improving its drying efficiency. When the filter belt 12 is transmitted, it will drive the two pressing rollers 15 to rotate, and the pressing roller 15 at the bottom will drive the brush roller 16 to rotate in the opposite direction of the operation of the filter belt 12 through the circular gear, so as to clean the dust attached to the filter screen 121, and then the cleaned dust and water stains can be discharged along the material guide trough 17.

[0048] The above embodiments are only preferred embodiments of the present invention and cannot be used to limit the scope of protection of the present invention. Any non-substantial changes and replacements made by technicians in this field on the basis of the present invention fall within the scope of protection required by the present invention.

Claims

1. An adjustable load test box, comprising: A chassis (1) and a bottom plate (2) suspended in the chassis (1), characterized in that a filtering mechanism is provided in the chassis (1), the filtering mechanism comprising a driving frame having a concave overall structure and a filter belt (12) provided on the driving frame and capable of circulating transmission, the driving frame being capable of adjusting the filter belt (12), the filter belt (12) being capable of filtering dust and moisture in the air, and the driving frame being provided with two sets of fans (14) for air intake and exhaust, respectively; The filter belt (12) is composed of two filter screens (121) of equal length and two moisture-absorbing belts (122) of equal length. The two filter screens (121) and the two moisture-absorbing belts (122) are spaced and arranged in parallel with each other on the filter belt (12), and the positions of the two moisture-absorbing belts (122) are respectively opposite to the two sets of fans (14). The moisture-absorbing belt (122) is composed of two gauze nets (1221) and a sponge layer (1222) between the two gauze nets (1221), so that the moisture-absorbing belt (122) can absorb moisture in the air while ensuring its own ventilation. The driving frame comprises a front frame (3) and a tail frame (4) slidably mounted in the chassis (1); a plurality of connecting rods (5) are provided on the front frame (3) and the tail frame (4); two driving rollers (6) and four shaping rollers (7) are provided on the front frame (3) and the tail frame (4); the filter belt (12) is sleeved on the two driving rollers (6) and in contact with the four shaping rollers (7).

2. The adjustable load test box according to claim 1, characterized in that: The front frame (3) is provided with a motor (9) for driving the driving roller (6) to rotate.

3. The adjustable load test box according to claim 1, characterized in that: The chassis (1) is provided with a concave opening, the front frame (3) is provided with a concave sealing plate (8) adapted to the concave opening, and the concave sealing plate (8) is provided with two handles, so that the entire filter mechanism can be conveniently taken out of the chassis (1) for maintenance.

4. The adjustable load test box according to claim 1, wherein: Two pressing rollers (15) are rotatably provided on the front frame (3) and the tail frame (4) and are distributed up and down. The filter belt (12) passes between the two pressing rollers (15), so that when the filter belt (12) is being driven, the two pressing rollers (15) can assist in squeezing out water stains in the filter belt (12).

5. The adjustable load test box according to claim 1, wherein: Brush rollers (16) are provided on the front frame (3) and the tail frame (4), and the brush rollers (16) are in contact with the filter belt (12), so that the brush rollers (16) can clean the filter belt (12) in transmission.

6. The adjustable load test box according to claim 5, characterized in that: The brush roller (16) is rotatably connected to the front frame (3) and the tail frame (4). The brush roller (16) and the pressure roller (15) located below are both provided with circular gears. The two circular gears are meshed with each other, so that the pressure roller (15) can drive the brush roller (16) to transfer in the opposite direction of the transmission of the filter belt (12).

7. The adjustable load test box according to claim 6, characterized in that: A material guide trough (17) is provided at the bottom of the chassis (1), and the material guide trough (17) is located directly below the pressure roller (15) and the brush roller (16), and is used to discharge dust and water stains cleaned from the filter belt (12).

8. The adjustable load test box according to claim 1, wherein: The sponge layer (1222) is provided with a plurality of inclined perforations distributed in an array, thereby further improving the ventilation effect of the sponge layer (1222) without affecting the dehumidification performance of the sponge layer (1222).

9. The adjustable load test box according to claim 1, wherein: Rotatable fixing frames (13) are provided on both inner walls of the tail frame (4), the other ends of the two fixing frames (13) are connected to the front frame (3), and the two sets of fans (14) are fixedly connected to the corresponding fixing frames (13), respectively.

10. The adjustable load test box according to claim 1, wherein: A power socket is provided on the inner wall of the chassis (1), and a power plug (18) is provided on the tail frame (4). The power plug (18) is inserted into the power socket, thereby supplying power to the entire filtering mechanism and allowing the entire filtering mechanism to be arranged in a modular form within the chassis (1).

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