A testing device for plastic pulley of a drum washing machine

Abstract

The utility model discloses a kind of testing device of plastic pulley of drum washing machine, it is related to washing machine accessory testing technical field, including cabinet;The inside of cabinet is equipped with baffle, the front side of baffle is provided with plastic pulley body, plastic pulley body is connected with driving assembly by shaft rod, driving assembly includes the driving motor of being fixed on the rear side wall of cabinet, and the pinion of being installed on the output shaft of driving motor, the end of shaft rod is equipped with adjusting assembly, plastic pulley body is connected with shaft rod by adjusting assembly, adjusting assembly includes the adjusting disc of being fixed on the end of shaft rod, adjusting disc outer wall is also equipped with adjusting piece by sliding setting.This utility model can be separated into two chambers by baffle, through salt fog sprayer, heater, cooler, the environment of the space where plastic pulley is located can be adjusted, also avoid the influence of severe environment to other electronic components by adjusting assembly can be assembled to the plastic pulley of different inner diameter.

Description

Technical Field

[0001] This utility model belongs to the field of testing technology for washing machine accessories, and in particular relates to a testing device for plastic pulleys of drum washing machines. Background Technology

[0002] Plastic pulleys are one of the most important components of a drum washing machine. They connect the motor to the inner drum and drive the inner drum to rotate in both directions via belt transmission. Before being assembled into a drum washing machine, plastic pulleys need to undergo performance testing, which mainly includes aging, speed, stability, and noise levels.

[0003] Chinese patent application CN219348168U discloses a testing device for plastic pulleys of a drum washing machine, comprising: a test frame including a base plate; a fixing member disposed on the base plate; a washing machine shaft, one end of which is connected to the fixing member, and the other end of which is fitted with the pulley to be tested; a movable member, which is vertically and flexibly disposed above the pulley to be tested; a drive shaft, which is suspended from the bottom of the movable member and connected to the pulley to be tested via a belt; a force sensor disposed between the drive shaft and the movable member; a displacement sensor disposed on the test frame; an outer cover disposed on the test frame to form a test chamber; an electrical box connected to the bottom of the base plate; an air vent disposed on the base plate and connecting the electrical box and the test chamber; a cooling and heating device disposed inside the electrical box; and a temperature sensor disposed inside the test chamber. This invention utilizes the force sensor and displacement sensor to measure the force and deformation of the pulley to be tested. Combined with the cooling and heating device and the temperature sensor, it can perform strength deformation tests, thermal shock tests, accelerated creep tests, etc.

[0004] The aforementioned testing device for plastic pulleys in a drum washing machine includes a fixing component with a washing machine shaft mounted at its center. The fixing component connects to the axle of the pulley under test via the washing machine shaft. However, different sizes of pulleys require different axle sizes to fit the washing machine shaft, and the axle size on the fixing component of this testing device is non-adjustable and extremely difficult to disassemble, thus limiting the range of pulley sizes it can handle. Furthermore, the device is located inside an outer casing, which contains not only the pulley under test but also the fixing component for mounting the pulley, the washing machine mechanism, and various electronic components. During harsh condition testing, this is achieved by directly spraying salt spray into the outer casing or rapidly heating or cooling the internal environment. This condition not only affects the pulley under test but also has a significant adverse impact on the electronic components of the device itself. Therefore, we provide a testing device for plastic pulleys in a drum washing machine to solve the problems mentioned above. Utility Model Content

[0005] The purpose of this invention is to provide a testing device for plastic pulleys in drum washing machines. A partition can divide the machine casing into two chambers. A salt sprayer, heater, and cooler can be used to regulate the environment of the space where the plastic pulley is located, thus preventing the harsh environment from affecting other electronic components. A drive assembly can provide power support for the rotation of the plastic pulley body. An adjustment assembly can be used to assemble plastic pulleys with different inner diameters. This invention solves the problems of existing testing devices for plastic pulleys in drum washing machines.

[0006] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution: This utility model relates to a testing device for a plastic pulley in a drum washing machine, comprising a casing; a base is installed at the bottom of the casing, and a door panel is rotatably installed on the front side wall of the casing; a salt spray sprayer, a heater, and a cooler are fixedly installed on the upper side wall of the casing; a partition is installed inside the casing; a plastic pulley body is disposed on the front side of the partition, and a drive assembly is disposed on the rear side of the partition; the plastic pulley body is connected to the drive assembly via a shaft; the drive assembly includes a drive motor fixed on the rear side wall of the casing, and a small gear mounted on the output shaft of the drive motor, the small gear being connected to the shaft via a large gear; an adjustment assembly is installed at the end of the shaft, and the plastic pulley body is connected to the shaft via the adjustment assembly; the adjustment assembly includes an adjustment disc fixed on the end of the shaft, and the adjustment disc is connected to the shaft via a fixed disc; an adjustment element is also slidably disposed on the outer wall of the adjustment disc.

[0007] The present invention is further configured such that a controller is embedded in the outer wall of the door panel, and heat dissipation grooves are embedded in the right side wall of the housing and the rear side of the partition. The housing is divided into two equal-sized chambers by the partition.

[0008] The present invention is further configured such that a first shaft hole is provided at the center of the partition, a second shaft hole is provided at the center of the rear side wall of the housing, a bearing is sleeved on the outer wall of the shaft, and the shaft is rotatably connected to the first shaft hole and the second shaft hole respectively through the bearing.

[0009] The present invention is further configured such that the salt spray sprayer, heater and cooler are disposed on the upper side wall of the housing in front of the partition, and the salt spray sprayer, heater and cooler are all in communication with the internal environment of the housing in front of the partition.

[0010] The present invention is further configured such that a detection plate is embedded in the inner walls of the left and right sides of the front side of the housing of the partition, and a speed measuring instrument, a displacement sensor and a temperature and humidity sensor are embedded in the detection plate.

[0011] The present invention is further configured such that a slot is provided on the outer wall of one end of the shaft located on the front side of the partition, and an insert plate is integrally provided on the inner wall of the adjusting plate, and the adjusting plate is inserted into the slot on the shaft through the insert plate.

[0012] The present invention is further configured such that a groove is provided on the outer wall of the adjusting disc, and a total of four grooves are provided in a circular array structure, and the adjusting component is installed in the groove.

[0013] The present invention is further configured such that the adjusting member includes a sliding plate that is slidably inserted into the groove, and a top plate is fixedly provided on the upper side wall of the sliding plate, and a groove is provided in the top plate, an electromagnetic column is installed in the groove, and a cover plate is provided on the outside of the electromagnetic column.

[0014] The present invention is further configured such that a frame is fixedly installed on the outer wall of the drive motor in the drive assembly, and the drive motor is connected to the rear side wall of the housing through the frame, and the large gear is fixedly installed on the outer wall of the shaft.

[0015] This utility model has the following beneficial effects: This invention comprises a housing, a salt spray sprayer, a heater, a cooler, and a testing plate. A partition is installed at the center of the housing, with the front side of the partition serving as the front side of the plastic pulley body and the rear side serving as the mounting point for the drive assembly. This effectively separates the space containing the electronic components from the space containing the plastic pulley body. The salt spray sprayer, heater, and cooler are installed on the upper side wall of the housing, within the space containing the plastic pulley body. The salt spray sprayer sprays water into the space containing the plastic pulley body, while the heater and cooler heat or cool the space, thereby regulating the internal environment of the space containing the plastic pulley body and enabling testing of the plastic pulley body under different conditions.

[0016] This utility model comprises a plastic pulley body, a shaft, a drive assembly, and an adjustment assembly. A shaft is mounted on the metal axle of the plastic pulley. The drive assembly is mounted on the rear end of the shaft, and the adjustment assembly is mounted on the front end. The shaft is connected to the metal axle of the plastic pulley via the adjustment assembly. The drive assembly provides rotational power to the shaft, thereby driving the plastic pulley body to rotate. The drive assembly includes a drive motor fixed to the rear side wall of the housing. A small gear is mounted on the output shaft of the drive motor, and a large gear is mounted on the shaft. The large gear meshes with the small gear. A slot is provided on the outer end of the shaft. The adjustment assembly includes an adjustment disc fitted onto the outer end of the shaft. An insert plate is integrally formed on the inner wall of the adjustment disc, and the insert plate is detachable from the slot. A fixing disc is also provided on the outer side of the adjustment disc, fixing the adjustment disc to the outer end of the shaft via the fixing disc. A groove is provided on the outer wall of the adjustment disc, and an adjustment component is installed in the groove. The adjustment component includes a sliding plate that slides into the groove, and a fixed part is provided at the upper end of the sliding plate. The top plate has a groove inside, in which an electromagnetic column is installed. A cover plate covers the outer side of the electromagnetic column and the upper outer wall of the groove. In use, first align the insert plate on the adjusting disc with the slot on the shaft and push the adjusting disc to insert it onto the shaft. Press down the adjusting parts on all four sides of the adjusting disc to retract it into the adjusting disc. Then align the metal axle of the plastic pulley body with the adjusting disc and push it in. This assembles the plastic pulley body into the adjusting disc. Finally, align the fixing disc with the shaft. By attaching the outer end of the screw and locking it in, the plastic pulley body can be assembled onto the adjusting plate. Then, when the electromagnetic column is energized, it will generate a strong magnetic attraction. The strong magnetic attraction generated by the electromagnetic column will have a strong attraction to the metal axle of the plastic pulley body. In this way, the electromagnetic column will be attracted to the inner wall of the metal axle of the plastic pulley body through the cover plate. During this process, the slide will move upward along the groove of the adjusting plate, while the slide will not detach from the adjusting plate. This achieves the effect of fixed installation of plastic pulley bodies with different inner diameters. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the structure of a testing device for a plastic pulley in a drum washing machine. Figure 1 .

[0019] Figure 2 This is a schematic diagram of the structure of a testing device for a plastic pulley in a drum washing machine. Figure 2 .

[0020] Figure 3 This is a half-section view of the casing structure.

[0021] Figure 4 This is a structural diagram of the plastic pulley body, shaft, drive assembly, and adjustment assembly.

[0022] Figure 5 This is a structural disassembly diagram of the plastic pulley body, shaft, drive assembly, and adjustment assembly.

[0023] Figure 6 This is a structural disassembly diagram of the adjustment component.

[0024] The attached diagram lists the components represented by each number as follows: 1-Casing, 101-Heat dissipation window, 102-Baffle plate, 102a-Shaft hole one, 103-Shaft hole two, 2-Base, 3-Door panel, 301-Controller, 4-Salt sprayer, 5-Heater, 6-Cooler, 7-Detection board, 701-Tachometer, 702-Displacement sensor, 703-Temperature and humidity sensor, 8-Plastic pulley body, 9-Shaft, 901-Bearing, 902-Slot, 10- - Drive assembly, 1001- Drive motor, 1002- Frame, 1003- Pinion gear, 1004- Large gear, 11- Adjustment assembly, 1101- Adjustment disc, 1101a- Insert plate, 1101b- Disc slot, 1102- Fixed disc, 1103- Adjustment component, 1103a- Slide plate, 1103b- Top plate, 1103c- Plate slot, 1103d- Electromagnetic column, 1103e- Cover plate. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model. Example

[0026] Please see Figure 1-3 This utility model is a testing device for plastic pulleys of a drum washing machine, including a casing 1, a partition 102, a salt spray sprayer 4, a heater 5, and a cooler 6. The partition 102 divides the casing 1 into front and rear chambers. The salt spray sprayer 4, the heater 5, and the cooler 6 regulate the environment of the chamber where the plastic pulley body 8 is located, without affecting the environment of the other chamber where the drive assembly 10 is installed.

[0027] Specifically, a base 2 is fixedly installed on the bottom side wall of the casing 1, a door panel 3 is installed on the front side wall, and a controller 301 is embedded in the door panel 3. A partition 102 is provided in the center of the interior of the casing 1, which divides the casing 1 into front and rear chambers. A heat dissipation window 101 is embedded in the rear side of the partition 102 and the right side wall of the casing 1.

[0028] Furthermore, a salt sprayer 4, a heater 5, and a cooler 6 are installed on the upper side wall of the housing 1 in the front chamber of the partition 102, and the salt sprayer 4, the heater 5, and the cooler 6 are in communication with the internal environment of the housing 1 in front of the partition 102. A detection plate 7 is embedded in the front side of the partition 102 and the left and right side walls of the housing 1. A speed measuring instrument 701, a displacement sensor 702 and a temperature and humidity sensor 703 are embedded in the outer wall of the detection plate 7. The speed measuring instrument 701 detects the rotational speed of the plastic pulley body 8, the displacement sensor 702 detects whether the plastic pulley body 8 shifts position during rotation, and the temperature and humidity sensor 703 detects the temperature and humidity of the environment in which the plastic pulley body 8 is located. Example

[0029] Please see Figure 4-5 Based on embodiment 1, a drive assembly 10 is also provided, which can provide power support for the rotation of the plastic pulley 8.

[0030] Specifically, a shaft hole 102a is provided at the center of the partition plate 102, a shaft hole 103 is provided at the center of the rear side wall of the housing 1, a bearing 901 is sleeved on the outer wall of the shaft rod 9, and the shaft rod 9 is rotatably connected to the shaft hole 102a and the shaft hole 103 through the bearing 901.

[0031] Furthermore, the drive assembly 10 includes a large gear 1004 mounted on the outer wall of the shaft 9 located on the rear side of the partition 102. The large gear 1004 is also meshed with a small gear 1003. The small gear 1003 is also mounted on the output shaft of the drive motor 1001. The drive motor 1001 is also fixedly mounted in the frame 1002. The frame 1002 is fixedly connected to the rear side wall of the housing 1.

[0032] The operation process of this embodiment is as follows: When in use, after the plastic pulley body 8 is assembled onto the shaft 9 through the adjustment component 11, the door panel 3 of the housing 1 is closed, and the drive component 10 is started. The drive component 10 works, and the output shaft of the drive motor 1001 drives the pinion 1003 to rotate. When the pinion 1003 rotates, the large gear 1004 meshing with it also rotates. Since the large gear 1004 is fixed on the shaft 9, the shaft 9 will also drive the plastic pulley body 8 to rotate. Example

[0033] Please see Figure 6 Based on Embodiments 1 and 2, an adjustment component 11 is also provided. The adjustment component 11 can fix the plastic pulley body 8 to the shaft 9 through the adjustment plate 1101 and the fixing plate 1102, and can fix plastic pulley bodies 8 with different inner diameters through the adjustment component 1103.

[0034] Specifically, a slot 902 is provided at the end of the shaft 9, and an adjustment assembly 11 is provided at the shaft end of the shaft 9. The adjustment assembly 11 includes an adjustment plate 1101, an insert plate 1101a is provided on the inner wall of the adjustment plate 1101, and the adjustment plate 1101 is inserted into the slot 902 on the outer wall of the shaft 9 through the insert plate 1101a. A fixing plate 1102 is inserted into the outer side of the adjustment plate 1101 and the end of the shaft 9. The adjustment plate 1101 is fixed on the shaft 9 through the fixing plate 1102 to prevent the fixing plate 1102 from detaching from the shaft 9.

[0035] Furthermore, a groove 1101b is provided on the outer wall of the adjusting plate 1101, and an adjusting component 1103 is installed in the groove 1101b. The groove 1101b is T-shaped. The adjusting component 1103 includes a sliding plate 1103a that is slidably disposed in the groove 1101b. A top plate 1103b is provided on the top of the sliding plate 1103a. A groove 1103c is opened inside the top plate 1103b. An electromagnetic column 1103d is installed inside the groove 1103c. A cover plate 1103e is fixedly installed on the outer side of the electromagnetic column 1103d and the outer port of the groove 1103c.

[0036] The operation process of this embodiment is as follows: In use, first align the insert plate 1101a on the adjusting plate 1101 with the slot 902 on the shaft 9 and push the adjusting plate 1101 to insert it into the shaft 9. Press down the adjusting pieces 1103 on the four sides of the adjusting plate 1101 to retract them into the adjusting plate 1101. Then align the metal axle of the plastic pulley body 8 with the adjusting plate 1101 and push it in. This will assemble the plastic pulley body 8 into the adjusting plate 1101. Finally, connect the fixing plate 1102 to the outer end of the shaft 9 and tighten the bolts to secure the plastic pulley body. The plastic pulley body 8 is assembled onto the adjustment plate 1101. Then, the electromagnetic column 1103d is energized, which generates a strong magnetic attraction. The strong magnetic attraction generated by the electromagnetic column 1103d has a strong attraction to the metal axle of the plastic pulley body 8. As a result, the electromagnetic column 1103d will be attracted to the inner wall of the metal axle of the plastic pulley body 8 through the cover plate 1103e. During this process, the slide plate 1103a will move upward along the groove 1101b of the adjustment plate 1101. At the same time, the slide plate 1103a will not detach from the adjustment plate 1101, thereby achieving the effect of fixed installation of plastic pulley bodies 8 with different inner diameters.

[0037] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0038] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A testing device for plastic pulleys of a drum washing machine, comprising a housing (1); characterized in that: A base (2) is installed at the bottom of the housing (1), and a door panel (3) is rotatably installed on the front side wall of the housing (1). A salt spray sprayer (4), a heater (5), and a cooler (6) are fixedly installed on the upper side wall of the housing (1). A partition (102) is installed inside the housing (1). A plastic pulley body (8) is provided on the front side of the partition (102), and a drive assembly (10) is provided on the rear side of the partition (102). The plastic pulley body (8) is connected to the drive assembly (10) through a shaft (9). The drive assembly (10) includes a drive motor (1) fixed on the rear side wall of the housing (1). 001), and a small gear (1003) installed on the output shaft of the drive motor (1001), and the small gear (1003) is connected to the shaft (9) through the large gear (1004). An adjustment component (11) is installed at the end of the shaft (9), and the plastic pulley body (8) is connected to the shaft (9) through the adjustment component (11). The adjustment component (11) includes an adjustment disc (1101) fixed on the end of the shaft (9), and the adjustment disc (1101) is connected to the shaft (9) through the fixed disc (1102). An adjustment element (1103) is also slidably arranged on the outer wall of the adjustment disc (1101).

2. The testing device for the plastic pulley of a drum washing machine according to claim 1, characterized in that, A controller (301) is inlaid on the outer wall of the door panel (3), and a heat dissipation window (101) is inlaid on the right side wall of the housing (1) and the rear side of the partition (102). The housing (1) is divided into two equal-sized chambers by the partition (102).

3. The testing device for the plastic pulley of a drum washing machine according to claim 2, characterized in that, The partition (102) has a shaft hole 1 (102a) at its center, and the housing (1) has a shaft hole 2 (103) at its center. The shaft (9) has a bearing (901) sleeved on its outer wall, and the shaft (9) is rotatably connected to the shaft hole 1 (102a) and the shaft hole 2 (103) respectively through the bearing (901).

4. The testing device for the plastic pulley of a drum washing machine according to claim 1, characterized in that, The salt spray sprayer (4), heater (5) and cooler (6) are located on the upper side wall of the housing (1) on the front side of the partition (102), and the salt spray sprayer (4), heater (5) and cooler (6) are all in communication with the internal environment of the housing (1) on the front side of the partition (102).

5. The testing device for the plastic pulley of a drum washing machine according to claim 4, characterized in that, A detection plate (7) is inlaid on the inner walls of the left and right sides of the housing (1) on the front side of the partition (102). A speed measuring instrument (701), a displacement sensor (702) and a temperature and humidity sensor (703) are inlaid on the detection plate (7).

6. The testing device for the plastic pulley of a drum washing machine according to claim 1, characterized in that, A slot (902) is provided on the outer wall of one end of the shaft (9) located on the front side of the partition (102). An insert plate (1101a) is integrally provided on the inner wall of the adjusting plate (1101), and the adjusting plate (1101) is inserted into the slot (902) on the shaft (9) through the insert plate (1101a).

7. The testing device for the plastic pulley of a drum washing machine according to claim 6, characterized in that, The outer wall of the adjusting plate (1101) is provided with a plate groove (1101b), and there are four plate grooves (1101b) arranged in a ring array structure. The adjusting component (1103) is installed in the plate groove (1101b).

8. The testing device for the plastic pulley of a drum washing machine according to claim 7, characterized in that, The adjusting component (1103) includes a sliding plate (1103a) that is slidably inserted into the groove (1101b), and a top plate (1103b) is fixedly provided on the upper side wall of the sliding plate (1103a). A plate groove (1103c) is provided in the top plate (1103b), an electromagnetic column (1103d) is installed in the plate groove (1103c), and a cover plate (1103e) is provided on the outside of the electromagnetic column (1103d).

9. A testing device for the plastic pulley of a drum washing machine according to claim 1, characterized in that, A frame (1002) is fixedly installed on the outer wall of the drive motor (1001) in the drive assembly (10), and the drive motor (1001) is connected to the rear side wall of the housing (1) through the frame (1002). The large gear (1004) is fixedly installed on the outer wall of the shaft (9).

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