Brake structure of isolation type washing and dehydrating machine

Abstract

The utility model discloses a brake structure of an isolation type washing and dewatering machine, which relates to the technical field of isolation type washing and dewatering machines, and comprises a large belt pulley connected with an inner cylinder, an annular flange arranged on the peripheral side of the large belt pulley, a first brake arm arranged on the front side of the flange, a second brake arm arranged on the rear side of the flange, and a driving mechanism, the driving mechanism is used for driving the first brake arm and the second brake arm to clamp the turned-over edge. According to the utility model, the environmental pollution can be reduced, and the adaptability is improved.

Description

Technical Field

[0001] This utility model relates to the field of isolated washer-extractor technology, and specifically to a braking structure for an isolated washer-extractor. Background Technology

[0002] An isolated washer-extractor includes a housing and an inner cylinder located inside the housing.

[0003] The inner drum has two inner doors on its perimeter. The machine casing has two doors: one located in the non-clean area of ​​the laundry room, and the other in the clean area. Laundry is loaded through the door in the non-clean area and removed through the door in the clean area after washing. The positions of the inner doors correspond during loading and unloading.

[0004] A large pulley is coaxially mounted on the inner drum. The large pulley drives a small pulley via a belt. The small pulley is mounted on the output shaft of the drive motor. The drive motor drives the small pulley to rotate, which in turn drives the large pulley to rotate via the belt. The large pulley then drives the inner drum to rotate, causing the laundry inside the inner drum to tumble and rub against the water, achieving a cleaning effect.

[0005] The braking structure of the large pulley includes a brake band mounted on the pulley and a cylinder for tightening the brake band. During braking, the cylinder tightens the brake band, causing it to lock onto the large pulley, achieving braking through friction. However, because the brake band is made of asbestos rubber, friction occurs when it locks onto the large pulley, generating a large amount of asbestos rubber dust. This dust pollutes the environment, harms health, and makes the system unsuitable for cleanrooms, thus reducing the adaptability of isolation washer-extractors.

[0006] Therefore, how to reduce environmental pollution and improve adaptability is a technical problem that needs to be solved. Utility Model Content

[0007] To address the aforementioned shortcomings of existing technologies, this invention proposes a braking structure for an isolated washer-extractor, which can reduce environmental pollution and improve adaptability.

[0008] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0009] A braking structure for an isolated washer-extractor includes a large pulley connected to an inner drum, an annular flange on the periphery of the large pulley, a first brake arm on the front side of the flange, and a second brake arm on the rear side of the flange. It also includes a drive mechanism for driving the first and second brake arms to clamp the flange.

[0010] Furthermore, the drive mechanism is located on the lower side of the large pulley.

[0011] Furthermore, the drive mechanism includes a mounting base, a first elastic element, a second elastic element, and a telescopic element;

[0012] The middle parts of the first brake arm and the middle parts of the second brake arm are rotatably connected to the mounting base;

[0013] The lower part of the first brake arm is connected to the mounting base through the first elastic element, which is used to pull the lower part of the first brake arm closer to the mounting base.

[0014] The lower part of the second brake arm is connected to the mounting base via a second elastic member, which is used to pull the lower part of the second brake arm closer to the mounting base.

[0015] The first brake arm has a telescoping device at its bottom on the side opposite to the second brake arm, and the piston rod of the telescoping device abuts against the bottom of the second brake arm.

[0016] Furthermore, the drive mechanism also includes a first clamp, a second clamp, a first connecting rod, and a second connecting rod;

[0017] The upper end of the first brake arm is rotatably connected to a first clamp, the end of the first clamp away from the first brake arm is rotatably connected to the upper end of the first connecting rod, and the lower end of the first connecting rod is rotatably connected to the mounting base.

[0018] The upper end of the second brake arm is rotatably connected to a second clamp, the end of the second clamp away from the second brake arm is rotatably connected to the upper end of the second connecting rod, and the lower end of the second connecting rod is rotatably connected to a mounting base.

[0019] Furthermore, the first clamping seat includes a first housing and a first clamping block disposed inside the first housing, and the second clamping seat includes a second housing and a second clamping block disposed inside the second housing.

[0020] Furthermore, the front side of the flange is provided with multiple grooves along the circumferential direction, and the rear side of the flange is provided with multiple protrusions along the circumferential direction. The grooves and protrusions are arranged correspondingly. The upper end of the first brake arm is provided with a locking block, which cooperates with the groove. The upper end of the second brake arm is provided with a locking groove, which cooperates with the protrusion.

[0021] The beneficial effects of this utility model are:

[0022] 1. In this utility model, the clamping action of the first and second brake arms on the flange stops the rotation of the large pulley, thereby achieving braking. Compared with the prior art, this utility model can reduce the friction generated during braking, reduce environmental pollution, and improve the adaptability of the isolated washer-extractor with the braking structure of this utility model used in cleanrooms.

[0023] 2. In this utility model, the drive mechanism, the first brake arm and the second brake arm used for braking are compact in structure. When installing them on the isolation washer-extractor, it is only necessary to install the mounting base in the drive mechanism on the casing of the isolation washer-extractor. The installation is simple and helps to improve the installation efficiency.

[0024] 3. Because the drive mechanism is located on the lower side of the large pulley, the height of the drive mechanism can be reduced, making it easier to inspect and maintain the drive mechanism.

[0025] 4. In this invention, when the piston rod of the telescopic device extends, it pushes the bottom of the second brake arm away from the bottom of the first brake arm. According to the lever principle, the upper ends of the first and second brake arms move closer together. Conversely, when the piston rod of the telescopic device retracts, it is pulled apart by the first and second elastic elements, causing the upper ends of the first and second brake arms to move away from each other. In summary, the movement of the first and second brake arms is driven by a telescopic device, the first elastic element, and the second elastic element. Since only the telescopic device has a single power source, the structure is simplified and energy is saved.

[0026] 5. By setting a first clamping seat, a second clamping seat, a first connecting rod, and a second connecting rod, when the first clamping block on the first clamping seat and the second clamping block on the second clamping seat clamp the flange 11, the first clamping block and the second clamping block always face the flange, so as to maintain the stability of the first clamping block and the second clamping block, and allow the first clamping block and the second clamping block to clamp the flange smoothly for braking, which helps to improve braking reliability.

[0027] 6. By setting grooves, convex bulges, locking blocks, and slots, the engagement of slots and convex bulges, and the engagement of locking blocks and grooves, can further improve the efficiency of the brake pulley, further reduce friction, and further protect the environment.

[0028] 7. Because the positions of the convex bulge and the groove are set in a corresponding manner, the groove can be punched out on the front side of the flange while the convex bulge is obtained on the back side of the flange, which facilitates processing and helps to improve processing efficiency. Attached Figure Description

[0029] Figure 1 This is a three-dimensional diagram of the braking structure of an isolated washer-extractor;

[0030] Figure 2 This is a front view of the braking structure of an isolated washer-extractor;

[0031] Figure 3 It is a three-dimensional structure consisting of a large pulley, a first brake arm, a second brake arm, and a drive mechanism. Figure 1 ;

[0032] Figure 4 yes Figure 3 A magnified view of a section at point A in the middle;

[0033] Figure 5 It is a three-dimensional structure consisting of a large pulley, a first brake arm, a second brake arm, and a drive mechanism. Figure 2 ;

[0034] Figure 6 yes Figure 5 A magnified view of a section at point B in the middle;

[0035] Figure 7 This is a right view of the large pulley, the first brake arm, the second brake arm, and the drive mechanism;

[0036] Figure 8 This is a left view of the large pulley, the first brake arm, the second brake arm, and the drive mechanism;

[0037] Figure 9 It is a three-dimensional structure consisting of a large pulley, a first brake arm, a second brake arm, and a drive mechanism. Figure 3 ;

[0038] Figure 10 yes Figure 9 A magnified view of a section at point C;

[0039] Figure 11 It is a three-dimensional structure consisting of a large pulley, a first brake arm, a second brake arm, and a drive mechanism. Figure 4 ;

[0040] Figure 12 yes Figure 11 A magnified view of a section at point D.

[0041] Explanation of reference numerals in the attached figures:

[0042] 1-Large pulley, 11-Flanged edge, 111-Groove, 112-Convex bulge,

[0043] 2-First brake arm, 21-First hook,

[0044] 3-Second brake arm, 31-Third hook,

[0045] 4-Mounting base, 41-Second hook, 42-Fourth hook

[0046] 5-First spring,

[0047] 6-Second spring,

[0048] 7-Expansion joint,

[0049] 81-First housing, 811-First clamping block, 8111-Card block,

[0050] 91-Second housing, 911-Second clamping block, 9111-Slot,

[0051] 10-First Linkage,

[0052] 20 - Second link. Detailed Implementation

[0053] To better understand this utility model, it will be further described below with reference to the accompanying drawings. It is worth noting that in the description of this utility model, terms such as "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are used only for the convenience of describing this utility model and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0054] Example 1:

[0055] See Figures 1 to 8 A braking structure for an isolated washer-extractor includes a large pulley 1 connected to an inner drum, and an annular flange 11 is provided on the periphery of the large pulley 1. The flange 11 and the large pulley 1 are an integral structure.

[0056] See Figure 4 and Figure 6 A first brake arm 2 is provided on the front side of the flange 11, and a second brake arm 3 is provided on the rear side of the flange 11.

[0057] The brake structure of this embodiment 1 also includes a drive mechanism, which is used to drive the first brake arm 2 and the second brake arm 3 to clamp the flange 11. This embodiment 1 provides a specific structure of the drive mechanism: see [link to documentation]. Figures 1 to 8 The drive mechanism includes a mounting base 4, a first elastic element, a second elastic element, and a telescopic element 7.

[0058] See Figure 1 and Figure 2 Mounting base 4 is located below the large pulley 1 and is fixedly mounted on the casing of the isolated washer-extractor. See also Figure 4 and Figure 6 The middle part of the first brake arm 2 and the middle part of the second brake arm 3 are rotatably connected to the mounting base 4.

[0059] See Figure 4 The first elastic element is a first spring 5. One end of the first spring 5 is hung on a first hook 21, which is fixedly installed on the lower part of the first brake arm 2. The other end of the first spring 5 is hung on a second hook 41, which is fixedly installed on the mounting base 4. The first spring 5 is used to pull the lower part of the first brake arm 2 closer to the mounting base 4.

[0060] See Figure 6The second elastic element is a second spring 6. One end of the second spring 6 is hung on a third hook 31, which is fixedly installed on the lower part of the second brake arm 3. The other end of the second spring 6 is hung on a fourth hook 42, which is fixedly installed on the mounting base 4. The second spring 6 is used to pull the lower part of the second brake arm 3 closer to the mounting base 4.

[0061] See Figure 4 The first brake arm 2 has a telescopic device 7 fixedly installed at its bottom on the side opposite to the second brake arm 3. The telescopic device 7 can be one of a hydraulic cylinder, a pneumatic cylinder, an electric push rod, and an air bag. The piston rod of the telescopic device 7 abuts against the bottom of the second brake arm 3.

[0062] The working principle of this embodiment 1 is as follows:

[0063] (1) Scenario 1: When the piston rod of the telescopic device 7 extends, the piston rod of the telescopic device 7 pushes the bottom of the second brake arm 3 away from the bottom of the first brake arm 2, and the first spring 5 and the second spring 6 are stretched, which increases the distance between the bottom of the first brake arm 2 and the bottom of the second brake arm 3. The upper ends of the first brake arm 2 and the upper ends of the second brake arm 3 approach each other, so that the upper ends of the first brake arm 2 and the upper ends of the second brake arm 3 clamp the flange 11 on the periphery of the large pulley 1, and stop the large pulley 1 from continuing to rotate.

[0064] (2) Scenario 2: When the piston rod of the telescopic device 7 retracts, under the pull of the first spring 5 and the second spring 6, the lower part of the first brake arm 2 approaches the mounting seat 4, and the lower part of the second brake arm 3 approaches the mounting seat 4, which reduces the distance between the bottom of the first brake arm 2 and the bottom of the second brake arm 3, and increases the distance between the upper end of the first brake arm 2 and the upper end of the second brake arm 3, which causes the upper end of the first brake arm 2 and the upper end of the second brake arm 3 to leave the flange 11. At this time, the first brake arm 2 and the second brake arm 3 will not brake the large pulley 1.

[0065] Based on the working principle described in Example 1, it can be seen that Example 1 has the following effects:

[0066] First, in this embodiment 1, the clamping action of the first brake arm 2 and the second brake arm 3 on the flange 11 is used to stop the rotation of the large pulley 1, thereby achieving braking. Compared with the prior art, this embodiment 1 can reduce the friction generated during braking, reduce environmental pollution, and improve adaptability for use in cleanrooms with the isolation washer-extractor with the braking structure of this embodiment 1.

[0067] Secondly, in this embodiment 1, the drive mechanism for braking, the first brake arm 2 and the second brake arm 3 have a compact structure. When installing them on the isolated washer-extractor, it is only necessary to install the mounting base 4 in the drive mechanism on the casing of the isolated washer-extractor. The installation is simple and helps to improve the installation efficiency.

[0068] Third, in this embodiment 1, when the piston rod of the telescopic device 7 extends, it pushes the bottom of the second brake arm 3 away from the bottom of the first brake arm 2. According to the lever principle, the upper ends of the first brake arm 2 and the second brake arm 3 move closer to each other. Conversely, when the piston rod of the telescopic device 7 retracts, it is pulled by the first and second elastic elements, causing the upper ends of the first brake arm 2 and the second brake arm 3 to move away from each other. In summary, the movement of the first brake arm 2 and the second brake arm 3 is driven by a telescopic device 7, the first elastic element, and the second elastic element. Since only the telescopic device 7 has a single power source, the structure is simplified and energy is saved.

[0069] Example 2:

[0070] This embodiment 2 further improves the drive mechanism in embodiment 1:

[0071] In this embodiment 2, see Figure 7 and Figure 8 The drive mechanism also includes a first clamp, a second clamp, a first connecting rod 10, and a second connecting rod 20.

[0072] See Figure 7 The first clamping seat includes a first housing 81 and a first clamping block 811 installed inside the first housing 81. The upper end of the first brake arm 2 is rotatably connected to the first housing 81, the end of the first housing 81 away from the first brake arm 2 is rotatably connected to the upper end of the first connecting rod 10, and the lower end of the first connecting rod 10 is rotatably connected to the mounting base 4.

[0073] See Figure 8 The second clamping seat includes a second housing 91 and a second clamping block 911 installed inside the second housing 91. The upper end of the second brake arm 3 is rotatably connected to the second housing 91, and the end of the second housing 91 away from the second brake arm 3 is rotatably connected to the upper end of the second connecting rod 20. The lower end of the second connecting rod 20 is rotatably connected to the mounting base 4. Both the first clamping block 811 and the second clamping block 911 can be ceramic brake blocks.

[0074] The working principle of this embodiment 2 is as follows:

[0075] (1) Scenario 1: When the piston rod of the telescopic device 7 extends, the piston rod of the telescopic device 7 pushes the bottom of the second brake arm 3 away from the bottom of the first brake arm 2, and the first spring 5 and the second spring 6 are stretched, which increases the distance between the bottom of the first brake arm 2 and the bottom of the second brake arm 3. The first clamp at the upper end of the first brake arm 2 and the second clamp at the upper end of the second brake arm 3 approach each other, so that the first clamp and the second clamp clamp the flange 11 on the periphery of the large pulley 1, and stop the large pulley 1 from continuing to rotate.

[0076] Since the first clamp is connected to the mounting base 4 via the first connecting rod 10 and the second clamp is connected to the mounting base 4 via the second connecting rod 20, the first clamp 811 on the first clamp and the second clamp 911 on the second clamp can always face the flange 11 during the swinging process of the first clamp and the second clamp approaching the flange 11, thus maintaining the stability of the first clamp and the second clamp.

[0077] (2) Scenario 2: When the piston rod of the telescoping device 7 retracts, under the pull of the first spring 5 and the second spring 6, the lower part of the first brake arm 2 approaches the mounting seat 4, and the lower part of the second brake arm 3 approaches the mounting seat 4, so that the distance between the bottom of the first brake arm 2 and the bottom of the second brake arm 3 is reduced, and the first clamp at the upper end of the first brake arm 2 and the second clamp at the upper end of the second brake arm 3 move away from each other.

[0078] Since the first clamp is connected to the mounting base 4 via the first connecting rod 10 and the second clamp is connected to the mounting base 4 via the second connecting rod 20, the first clamp 811 on the first clamp and the second clamp 911 on the second clamp can always face the flange 11 during the swinging process of the first clamp and the second clamp 11, thus maintaining the stability of the first clamp and the second clamp.

[0079] Based on the working principle described above in Embodiment 2, it can be seen that Embodiment 2 has the following effects:

[0080] In this embodiment 2, by setting a first clamping seat, a second clamping seat, a first connecting rod 10, and a second connecting rod 20, when the first clamping block 811 on the first clamping seat and the second clamping block 911 on the second clamping seat clamp the flange 11, the first clamping block 811 and the second clamping block 911 on the second clamping seat always face the flange 11, so as to maintain the stability of the first clamping block 811 and the second clamping block 911, and allow the first clamping block 811 and the second clamping block 911 to clamp the flange 11 smoothly for braking, which helps to improve braking reliability.

[0081] Example 3

[0082] This embodiment 3 is an improvement upon embodiment 2:

[0083] See Figures 9 to 12 The front side of the flange 11 has multiple grooves 111 along its circumferential direction, and the rear side of the flange 11 has multiple protrusions 112 along its circumferential direction. The grooves 111 and the protrusions 112 are correspondingly arranged. The first clamping block 811 has a locking block 8111, which is an integral structure. The locking block 8111 engages with the grooves 111. The second clamping block 911 has a slot 9111, which engages with the protrusions 112.

[0084] The working principle of this embodiment 3 is as follows:

[0085] When the first clamping block 811 and the second clamping block 911 clamp the flange 11 on the circumference of the large pulley 1, the locking block 8111 on the first clamping block 811 enters the groove 111 on the front side of the flange 11, and the locking groove 9111 on the second clamping block 911 is engaged with the protrusion 112 on the rear side of the flange 11.

[0086] Based on the working principle described above in Embodiment 3, it can be seen that Embodiment 3 has the following effects:

[0087] When the first clamping block 811 and the second clamping block 911 cooperate to clamp the flange 11 on the periphery of the large pulley 1, by setting the groove 111, the protrusion 112, the locking block 8111 and the slot 9111, the locking effect of the slot 9111 and the protrusion 112 and the locking block 8111 and the groove 111 can be used to further improve the braking efficiency of the large pulley 1, further reduce friction, and further protect the environment.

[0088] In addition, since the convex 112 and the groove 111 are positioned correspondingly, the groove 111 can be punched out on the front side of the flange 11 while the convex 112 is obtained on the rear side of the flange 11, which facilitates processing and helps to improve processing efficiency.

[0089] Furthermore, in this embodiment 3, the locking block 8111 is set on the first clamping block 811, and the locking groove 9111 is set on the second clamping block 911. In addition, in embodiment 1, when the upper end of the first brake arm 2 is not provided with the first clamping seat and the upper end of the second brake arm 3 is not provided with the second clamping seat, the locking block 8111 can be directly set on the upper end of the first brake arm 2, and the locking groove 9111 can be directly set on the upper end of the second brake arm 3. Similarly, the engagement of the locking groove 9111 with the protrusion 112 and the engagement of the locking block 8111 with the groove 111 can be used to improve the efficiency of the brake on the large pulley 1.

[0090] Obviously, those skilled in the art can make various modifications and variations to this utility model without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this utility model and their equivalents, this utility model also intends to include these modifications and variations.

Claims

1. A braking structure for an isolated washer-extractor, comprising a large pulley connected to an inner drum, characterized in that, The large pulley has an annular flange on its periphery, a first brake arm on the front side of the flange, a second brake arm on the rear side of the flange, and a drive mechanism for driving the first and second brake arms to clamp the flange.

2. The braking structure of an isolated washer-extractor according to claim 1, characterized in that, The drive mechanism is located on the lower side of the large pulley.

3. The braking structure of an isolated washer-extractor according to claim 1 or 2, characterized in that, The drive mechanism includes a mounting base, a first elastic element, a second elastic element, and a telescopic element; The middle parts of the first brake arm and the middle parts of the second brake arm are rotatably connected to the mounting base; The lower part of the first brake arm is connected to the mounting base through the first elastic element, which is used to pull the lower part of the first brake arm closer to the mounting base. The lower part of the second brake arm is connected to the mounting base via a second elastic member, which is used to pull the lower part of the second brake arm closer to the mounting base. The first brake arm has a telescoping device at its bottom on the side opposite to the second brake arm, and the piston rod of the telescoping device abuts against the bottom of the second brake arm.

4. The braking structure of an isolated washer-extractor according to claim 3, characterized in that, The drive mechanism further includes a first clamp, a second clamp, a first connecting rod, and a second connecting rod; The upper end of the first brake arm is rotatably connected to a first clamp, the end of the first clamp away from the first brake arm is rotatably connected to the upper end of the first connecting rod, and the lower end of the first connecting rod is rotatably connected to the mounting base. The upper end of the second brake arm is rotatably connected to a second clamp, the end of the second clamp away from the second brake arm is rotatably connected to the upper end of the second connecting rod, and the lower end of the second connecting rod is rotatably connected to a mounting base.

5. The braking structure of an isolated washer-extractor according to claim 4, characterized in that, The first clamping seat includes a first housing and a first clamping block disposed inside the first housing, and the second clamping seat includes a second housing and a second clamping block disposed inside the second housing.

6. The braking structure of an isolated washer-extractor according to claim 1, characterized in that, The front side of the flange has multiple grooves along the circumferential direction, and the rear side of the flange has multiple protrusions along the circumferential direction. The grooves and protrusions are arranged correspondingly. The upper end of the first brake arm has a locking block that cooperates with the groove. The upper end of the second brake arm has a locking groove that cooperates with the protrusion.

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