Clutch brake gearbox device and household meat grinder

Abstract

The utility model relates to the technical field of food processing, in particular to a clutch braking gearbox device which comprises a gearbox, an output shaft and a transmission shaft are movably arranged in the gearbox, the output shaft is in transmission connection with a lower clutch, an upper clutch is fixed at the first end of the transmission shaft, and the upper clutch and the lower clutch are correspondingly arranged. The second end of the transmission shaft penetrates out of the gearbox and is fixed with a cutter assembly; the brake pad is fixed in the gearbox, the brake pad and the upper clutch are correspondingly arranged, the transmission shaft is in sliding connection with the brake pad, and an elastic assembly is arranged between the transmission shaft and the brake pad; when the transmission shaft drives the upper clutch to be connected with the lower clutch, the output shaft drives the transmission shaft and the cutter assembly to rotate. When the transmission shaft drives the upper clutch to be connected with the brake pad, the transmission shaft and the cutter assembly stop rotating. By means of the arrangement, after cutting is completed, under the continuous reset effect of the elastic assembly, the upper clutch is connected with the brake pad again in a matched mode after 1.5 seconds, cutter stopping is achieved after 1.5 seconds, and safety is good.

Description

Technical Field

[0001] The utility model relates to the technical field of food processing, in particular to a clutch brake gearbox device and a household meat grinder. Background Art

[0002] Most meat grinders on the market now use motor starting and motor braking to realize the working and non-working states of the cutter. This structure has a short service life and poses certain safety hazards.

[0003] For example, a Chinese utility model patent with authorization announcement number CN213194030U discloses a meat grinder gearbox, including a reduction box bracket, a reduction box upper cover, a reduction box lower cover, a motor, and a knife holder. The reduction box upper cover is buckled on the reduction box lower cover to form a accommodating chamber. The motor base is arranged on the reduction box upper cover, and also includes a rotating mechanism arranged in the accommodating chamber. The rotating mechanism includes a rotating cover, three rotating shafts, three double-layer gears, and a supporting cover. The three double-layer gears are arranged along the circumferential direction. The three rotating shafts pass through the corresponding double-layer gears and are pivotally connected between the rotating cover and the supporting cover. The large teeth of one of the double-layer gears are meshed with the large teeth of its two adjacent double-layer gears. The output shaft of the motor passes through the center hole of the reduction box upper cover and is fixed to the rotating cover. The top circumferential teeth of the knife holder pass through the reduction box bracket, the reduction box lower cover, and the supporting cover to mesh with the small teeth of the three double-layer gears. The prior art realizes the working state and non-working state of the tool holder by starting and braking the motor. When the working state is switched to the non-working state, the output shaft of the motor will drive the tool holder to rotate by inertia for a certain period of time, which poses certain safety hazards.

[0004] Therefore, there is still room for improvement and development in the existing technology. Utility Model Content

[0005] In view of the problems in the prior art, the utility model provides a clutch brake gearbox device, the initial state of which is a non-working state, under the action of the elastic component, the upper clutch and the brake pad are connected in cooperation; when it is necessary to switch to cutting work, the transmission shaft drives the upper clutch to move downward and connect with the lower clutch, compressing the elastic component. At this time, the output shaft can drive the transmission shaft and the knife assembly to rotate, so as to achieve cutting of food. After cutting is completed, under the resetting action of the elastic component, the transmission shaft is pushed to drive the upper clutch to move upward and disengage from the lower clutch. At this time, the working state is switched to the non-working state. Under the action of inertia, the transmission shaft and the knife assembly continue to rotate. Under the continuous resetting action of the elastic component, the upper clutch is re-connected with the brake pad after 1.5 seconds, so that the knife stops after 1.5 seconds, and the safety is good.

[0006] In order to achieve the above purpose, the technical solution applied by the utility model is as follows:

[0007] A clutch brake gearbox device comprises a gearbox, wherein an output shaft and a transmission shaft are movably provided in the gearbox, the output shaft is transmission-connected with a lower clutch, an upper clutch is fixed to the first end of the transmission shaft, the upper clutch and the lower clutch are arranged correspondingly, and a knife assembly is fixed to the second end of the transmission shaft after passing through the gearbox; a brake pad, wherein the brake pad is fixed in the gearbox, the brake pad and the upper clutch are arranged correspondingly, the transmission shaft is slidingly connected with the brake pad, and an elastic component is arranged between the transmission shaft and the brake pad; when the transmission shaft drives the upper clutch to connect with the lower clutch, the output shaft drives the transmission shaft and the knife assembly to rotate; when the transmission shaft drives the upper clutch to connect with the brake pad, the transmission shaft and the knife assembly stop rotating. With this arrangement, the initial state is the non-working state, and under the action of the elastic component, the upper clutch is connected with the brake pad; when it is necessary to switch to cutting work, the transmission shaft drives the upper clutch to move downward and connect with the lower clutch, compressing the elastic component. At this time, the output shaft can drive the transmission shaft and the knife assembly to rotate, so as to cut the food. After the cutting is completed, under the resetting action of the elastic component, the transmission shaft is pushed to drive the upper clutch to move upward and disengage from the lower clutch. At this time, the working state is switched to the non-working state. Under the action of inertia, the transmission shaft and the knife assembly continue to rotate. Under the continuous resetting action of the elastic component, the upper clutch is re-connected with the brake pad after 1.5 seconds, so that the knife stops after 1.5 seconds, which has good safety.

[0008] According to the above scheme, the lower surface of the brake pad close to the upper clutch is provided with a plurality of first brake teeth, and the upper surface of the upper clutch close to the brake pad is provided with a plurality of second brake teeth, and when the second brake teeth are connected with the first brake teeth, the transmission shaft and the knife assembly are stopped. In this way, when the upper clutch is connected with the brake pad, the upper clutch is locked by the brake pad under the cooperation of the second brake teeth and the first brake teeth, and the upper clutch is in a stopped state.

[0009] According to the above scheme, multiple first brake teeth are arranged in a ring shape on the lower surface of the brake pad, and the first brake teeth are provided with a first limiting step in the transmission direction when the drive shaft is working. Multiple second brake teeth are arranged in a ring shape on the upper surface of the upper clutch, and the second brake teeth are provided with a second limiting step in the transmission direction when the drive shaft is working. When the second brake teeth are connected to the first brake teeth, the second limiting step is locked with the first limiting step, and under the action of the brake pad fixed in the gear box, the drive shaft and the knife assembly stop rotating.

[0010] According to the above scheme, the upper surface of the lower clutch close to the upper clutch is provided with a plurality of first transmission teeth, and the lower surface of the upper clutch close to the lower clutch is provided with a plurality of second transmission teeth, and when the second transmission teeth are connected with the first transmission teeth, the output shaft drives the transmission shaft and the knife assembly to rotate. In this way, when the upper clutch is connected with the lower clutch, the lower clutch can drive the upper clutch to rotate under the cooperation of the second transmission teeth and the first transmission teeth.

[0011] According to the above scheme, multiple first transmission teeth are arranged in a ring shape on the upper surface of the lower clutch, and the first transmission teeth are provided with a third limiting step in the transmission direction when working relative to the transmission shaft. Multiple second transmission teeth are arranged in a ring shape on the lower surface of the upper clutch, and the second transmission teeth are provided with a fourth limiting step in the transmission direction when working relative to the transmission shaft. When the second transmission teeth are connected to the first transmission teeth, the fourth limiting step is locked with the third limiting step, and under the action of the output shaft and the transmission shaft movably arranged in the gear box, the output shaft drives the transmission shaft and the knife assembly to rotate synchronously.

[0012] According to the above scheme, the elastic component includes a spring and a retaining spring, the retaining spring is fixed on the transmission shaft, the spring is sleeved on the transmission shaft between the retaining spring and the brake pad, and the two ends of the spring are respectively in contact with the retaining spring and the brake pad. In this way, the initial state is a non-working state, and under the elastic force of the spring, the upper clutch is always connected to the brake pad. When it is necessary to switch to cutting work, the transmission shaft drives the upper clutch to move down and connect with the lower clutch, and the spring is compressed at the same time. After the cutting is completed, under the rebound force of the spring, the transmission shaft is pushed to drive the upper clutch to move up until the upper clutch is reconnected with the brake pad.

[0013] According to the above scheme, the lower surface of the lower clutch near the output shaft is provided with multiple transmission rods, and sun gears are fixed on the multiple transmission rods; a large gear is fixed in the gear box, and an annular gear ring is provided on the inner wall of the large gear, and multiple sun gears are located in the annular gear ring and meshed with the annular gear ring; a pinion is fixed at one end of the output shaft near the lower clutch, and the pinion is located in multiple sun gears and meshed with multiple sun gears, and a lower connector is fixed at the other end of the output shaft after passing through the gear box. In this way, when the output shaft is working, it drives the pinion to rotate, the pinion drives the sun gear to rotate, and the sun gear drives the transmission rod and the lower clutch to rotate relative to the large gear, thereby achieving the purpose of variable speed transmission.

[0014] According to the above scheme, the gearbox includes a gearbox lower cover and a gearbox upper cover, which are fixedly connected, a guide sleeve, a bearing bracket, an oil-containing bearing and an output shaft sleeve are arranged in the gearbox upper cover, an upper clutch is slidingly arranged in the guide sleeve, a brake pad is fixed between the guide sleeve and the bearing bracket, an oil-containing bearing is fixed on the bearing bracket, one end of the output shaft sleeve is arranged in the gearbox upper cover, and the other end of the output shaft sleeve passes through the gearbox upper cover and is fixedly connected to the knife assembly, and the oil-containing bearing and the output shaft sleeve are fixedly arranged on the transmission shaft. In this arrangement, under the action of the guide sleeve, the upper clutch slides stably; under the action of the output shaft sleeve, the knife assembly is fixedly connected to the transmission shaft; under the cooperation of the guide sleeve and the bearing bracket, the brake pad is clamped to fix the brake pad in the gearbox upper cover; under the action of the oil-containing bearing, the rotation of the transmission shaft is more stable and labor-saving.

[0015] According to the above scheme, the gearbox lower cover is provided with an oil seal and a ball bearing, the oil seal and the ball bearing are sleeved on the output shaft, and the oil seal and the ball bearing are arranged correspondingly. In this way, under the action of the ball bearing, the output shaft can rotate more stably and labor-saving.

[0016] A household meat grinder comprises a main machine, a meat grinder cup and the above-mentioned clutch brake gearbox device, wherein a driving assembly is arranged in the main machine, the clutch brake gearbox device is installed in the meat grinder cup, the meat grinder cup can be detachably installed on the main machine, the driving assembly is connected to the lower connector on the output shaft, the meat grinder cup is detachably connected to a cup cover, a switch is fixed on the inner wall of the cup cover, and the switch is correspondingly connected to the output shaft sleeve on the transmission shaft. In this way, when working, the cup cover is covered, the output shaft sleeve is pressed downward by the switch on the cup cover, and then the transmission shaft is driven to drive the upper clutch to move downward and connect with the lower clutch 1, at which time the output shaft can drive the transmission shaft and the knife assembly to rotate to cut the food in the meat grinder cup; when the cutting work is completed and the cup cover is opened, the spring rebound force drives the transmission shaft to drive the upper clutch to move upward and disengage from the lower clutch, and the knife assembly rotates continuously under the action of inertia, and under the action of continuous resetting, the upper clutch is reconnected with the brake pad after 1.5 seconds, so that the knife stops after 1.5 seconds, and the safety is good.

[0017] In actual applications, the switch can also be fixed on the top of the output sleeve. When the cup cover is put on and pressed down, the cup cover pushes the switch to drive the output sleeve downward. When the cup cover is released, the output sleeve and the switch are reset upward under the action of the spring rebound force.

[0018] Beneficial effects of the utility model:

[0019] The utility model is arranged like this, the initial state is the non-working state, under the action of the elastic component, the upper clutch and the brake pad are connected; when it is necessary to switch to the cutting work, the transmission shaft drives the upper clutch to move downward and connect with the lower clutch, compressing the elastic component. At this time, the output shaft can drive the transmission shaft and the knife assembly to rotate, so as to realize the cutting of food. After the cutting is completed, under the resetting action of the elastic component, the transmission shaft is pushed to drive the upper clutch to move upward and disengage from the lower clutch. At this time, the working state is switched to the non-working state. Under the action of inertia, the transmission shaft and the knife assembly continue to rotate. Under the continuous resetting action of the elastic component, the upper clutch is re-connected with the brake pad after 1.5 seconds, so that the knife stops after 1.5 seconds, and the safety is good. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is an exploded view of the clutch brake device of the utility model;

[0021] Figure 2 This is a working state diagram of the clutch brake device of the utility model;

[0022] Figure 3This is a diagram of the clutch brake device of the utility model in a stopped non-working state;

[0023] Figure 4 This is a schematic diagram of the lower clutch, upper clutch and brake pad of the utility model;

[0024] Figure 5 This is a schematic diagram of the connection between the lower clutch and the upper clutch of the utility model;

[0025] Figure 6 It is a schematic diagram of the connection between the upper clutch and the brake plate of the utility model.

[0026] In the figure:

[0027] 1. Lower clutch; 2. Upper clutch; 3. Brake pad; 4. Lower connector; 5. Gearbox lower cover; 6. Output shaft; 7. Pinion; 8. Oil seal; 9. Ball bearing; 10. Gearbox upper cover; 11. Large gear; 12. Sun gear; 13. Guide sleeve; 14. Spring; 15. Retaining spring; 16. Transmission shaft; 17. Bearing bracket; 18. Oil-containing bearing; 19. Output shaft sleeve; 20. Knife assembly; 21. Switch; 22. First transmission tooth; 23. Second transmission tooth; 24. First brake tooth; 25. Second brake tooth; 26. Transmission rod; 31. First limit step; 32. Second limit step; 33. Third limit step; 34. Fourth limit step. DETAILED DESCRIPTION

[0028] The technical solution of the utility model is described below in conjunction with the accompanying drawings and embodiments.

[0029] like Figures 1 to 6As shown, a clutch brake gearbox device described in the utility model includes a gearbox, in which an output shaft 6 and a transmission shaft 16 are movably provided, the output shaft 6 is transmission-connected with a lower clutch 1, an upper clutch 2 is fixed to the first end of the transmission shaft 16, the upper clutch 2 is arranged corresponding to the lower clutch 1, and a knife assembly 20 is fixed to the second end of the transmission shaft 16 after passing through the gearbox; a brake pad 3, the brake pad 3 is fixed in the gearbox, the brake pad 3 is arranged corresponding to the upper clutch 2, the transmission shaft 16 is slidingly connected to the brake pad 3, and an elastic component is provided between the transmission shaft 16 and the brake pad 3; when the transmission shaft 16 drives the upper clutch 2 to connect with the lower clutch 1, the output shaft 6 drives the transmission shaft 16 and the knife assembly 20 to rotate; when the transmission shaft 16 drives the upper clutch 2 to connect with the brake pad 3, the transmission shaft 16 and the knife assembly 20 stop rotating. In this way, the initial state is the non-working state. Under the action of the elastic component, the upper clutch 2 is connected with the brake pad 3; when it is necessary to switch to cutting work, the transmission shaft 16 drives the upper clutch 2 to move down and connect with the lower clutch 1, compressing the elastic component. At this time, the output shaft 6 can drive the transmission shaft 16 and the knife assembly 20 to rotate, so as to cut the food. After the cutting is completed, under the resetting action of the elastic component, the transmission shaft 16 is pushed to drive the upper clutch 2 to move up and disengage from the lower clutch 1. At this time, the working state is switched to the non-working state. Under the action of inertia, the transmission shaft 16 and the knife assembly 20 continue to rotate. Under the continuous resetting action of the elastic component, the upper clutch 2 is re-connected with the brake pad 3 after 1.5 seconds, so that the knife stops after 1.5 seconds, which has good safety.

[0030] In this embodiment, the lower surface of the brake pad 3 near the upper clutch 2 is provided with a plurality of first brake teeth 24, and the upper surface of the upper clutch 2 near the brake pad 3 is provided with a plurality of second brake teeth 25, and when the second brake teeth 25 are connected with the first brake teeth 21, the transmission shaft 16 and the knife assembly 20 are stopped. In this way, when the upper clutch 2 is connected with the brake pad 3, the upper clutch 2 is locked by the brake pad 3 under the cooperation of the second brake teeth 25 and the first brake teeth 24, and the upper clutch 2 is in a stopped state.

[0031] More specifically, the plurality of first brake teeth 24 are arranged in a ring shape on the lower surface of the brake pad 3, and the first brake teeth 24 are provided with a first limiting step 31 in the transmission direction relative to the transmission shaft 16 when working. The plurality of second brake teeth 25 are arranged in a ring shape on the upper surface of the upper clutch 2, and the second brake teeth 25 are provided with a second limiting step 32 in the transmission direction relative to the transmission shaft 16 when working. When the second brake teeth 25 are connected to the first brake teeth 24, the second limiting step 32 is engaged with the first limiting step 31, and with the action of the brake pad 3 fixed in the gear box, the transmission shaft 16 and the knife assembly 20 stop rotating.

[0032] In this embodiment, the upper surface of the lower clutch 1 close to the upper clutch 2 is provided with a plurality of first transmission teeth 22, and the lower surface of the upper clutch 2 close to the lower clutch 1 is provided with a plurality of second transmission teeth 23. When the second transmission teeth 23 are connected with the first transmission teeth 22, the output shaft 6 drives the transmission shaft 16 and the knife assembly 20 to rotate. In this way, when the upper clutch 2 is connected with the lower clutch 1, the lower clutch 1 can drive the upper clutch 2 to rotate under the cooperation of the second transmission teeth 23 and the first transmission teeth 22.

[0033] More specifically, multiple first transmission teeth 22 are arranged in a ring shape on the upper surface of the lower clutch 1, and the first transmission teeth 22 are provided with a third limiting step 33 in the transmission direction relative to the transmission shaft 16 when working. Multiple second transmission teeth 23 are arranged in a ring shape on the lower surface of the upper clutch 2, and the second transmission teeth 23 are provided with a fourth limiting step 34 in the transmission direction relative to the transmission shaft 16 when working. When the second transmission teeth 23 are connected to the first transmission teeth 22, the fourth limiting step 34 is locked with the third limiting step 33, and under the action of the output shaft 6 and the transmission shaft 16 movably arranged in the gear box, the output shaft 6 drives the transmission shaft 16 and the knife assembly 20 to rotate synchronously.

[0034] In this embodiment, the elastic component includes a spring 14 and a snap spring 15, the snap spring 15 is fixed on the transmission shaft 16, the spring 14 is sleeved on the transmission shaft 16 between the snap spring 15 and the brake pad 3, and the two ends of the spring 14 are respectively in contact with the snap spring 15 and the brake pad 3. In this way, the initial state is a non-working state, and under the elastic force of the spring 14, the upper clutch 2 is always connected with the brake pad 3. When it is necessary to switch to cutting work, the transmission shaft 16 drives the upper clutch 2 to move down and connect with the lower clutch 1, and the spring 14 is compressed. After the cutting is completed, under the rebound force of the spring 14, the transmission shaft 16 is pushed to drive the upper clutch 2 to move up until the upper clutch 2 is connected with the brake pad 3 again.

[0035] In this embodiment, the lower clutch 1 is provided with a plurality of transmission rods 26 on the lower surface close to the output shaft 6, and sun gears 12 are fixed on the plurality of transmission rods 26; a large gear 11 is fixed in the gear box, and an annular gear ring is provided on the inner wall of the large gear 11, and the plurality of sun gears 12 are located in the annular gear ring and meshed with the annular gear ring; a pinion 7 is fixed at one end of the output shaft 6 close to the lower clutch 1, and the pinion 7 is located in the plurality of sun gears 12 and meshed with the plurality of sun gears 12, and a lower connector 4 is fixed at the other end of the output shaft 6 after passing through the gear box. In this arrangement, when the output shaft 6 is working, the pinion 7 is driven to rotate, the pinion 7 is driven to rotate the sun gear 12, and the sun gear 12 is then driven to rotate the transmission rod 26 and the lower clutch 1 relative to the large gear 11, thereby achieving the purpose of variable speed transmission.

[0036] In this embodiment, the gearbox includes a gearbox lower cover 5 and a gearbox upper cover 10, which are fixedly connected to each other. A guide sleeve 13, a bearing bracket 17, an oil-containing bearing 18 and an output shaft sleeve 19 are arranged in the gearbox upper cover 10. The upper clutch 2 is slidably arranged in the guide sleeve 13, the brake pad 3 is fixed between the guide sleeve 13 and the bearing bracket 17, the oil-containing bearing 18 is fixed on the bearing bracket 17, one end of the output shaft sleeve 19 is arranged in the gearbox upper cover 10, and the other end of the output shaft sleeve 19 passes through the gearbox upper cover 10 and is fixedly connected to the knife assembly 20, and the oil-containing bearing 18 and the output shaft sleeve 19 are fixedly sleeved on the transmission shaft 16. With this arrangement, under the action of the guide sleeve 13, the sliding of the upper clutch 2 is stable; under the action of the output shaft sleeve 19, the knife assembly 20 is fixedly connected to the transmission shaft 16; under the cooperation of the guide sleeve 13 and the bearing bracket 17, the brake pad 3 is clamped and fixed in the gear box upper cover 10; under the action of the oil-containing bearing 18, the rotation of the transmission shaft 16 is more stable and labor-saving.

[0037] In this embodiment, the gearbox lower cover 5 is provided with an oil seal 8 and a ball bearing 9, which are sleeved on the output shaft 6, and the oil seal 8 and the ball bearing 9 are arranged correspondingly. In this way, under the action of the ball bearing 9, the output shaft 6 can rotate more stably and labor-saving.

[0038] A household meat grinder comprises a main machine, a meat grinder cup and the above-mentioned clutch brake gearbox device, wherein a driving assembly is arranged in the main machine, the clutch brake gearbox device is installed in the meat grinder cup, the meat grinder cup is detachably installed on the main machine, the driving assembly is drivingly connected to a lower connector 4 on an output shaft 6, a cup cover is detachably connected to the meat grinder cup, a switch 21 is fixed on the inner wall of the cup cover, and the switch 21 is correspondingly connected to an output shaft sleeve 19 on a transmission shaft 16. With this arrangement, when working, the cup cover is closed, and the switch 21 on the cup cover drives the output shaft sleeve 19 to be pressed downward, thereby pushing the transmission shaft 16 to drive the upper clutch 2 to move downward and cooperate with the lower clutch 1. At this time, the output shaft 6 can drive the transmission shaft 16 and the knife assembly 20 to rotate to achieve cutting of the food in the minced meat cup; when the cutting work is completed and the cup cover is opened, the rebound force of the spring 14 pushes the transmission shaft 16 to drive the upper clutch 2 to move upward and disengage from the lower clutch 1. Under the action of inertia, the knife assembly 20 continues to rotate. Under the action of continuous resetting, the upper clutch 2 is re-connected with the brake pad 3 after 1.5 seconds, and the knife stops after 1.5 seconds, which has good safety.

[0039] In actual application, the switch 21 can also be fixed on the top of the output shaft sleeve 19. When the cup cover is covered and pressed downward, the cup cover pushes the switch 21 to drive the output shaft sleeve 19 to move downward. When the cup cover is released, the output shaft sleeve 19 and the switch 21 are reset upward under the rebound force of the spring 14.

[0040] The embodiments of the present invention are described above in conjunction with the accompanying drawings, but the present invention is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the enlightenment of the present invention, ordinary technicians in this field can also make many forms without departing from the scope of protection of the present invention and the claims, all of which belong to the protection scope of the present invention.

Claims

1. A clutch brake gearbox device, characterized in that: include: A gear box, wherein an output shaft and a transmission shaft are movably arranged in the gear box, the output shaft is transmission-connected with a lower clutch, an upper clutch is fixed to the first end of the transmission shaft, the upper clutch and the lower clutch are arranged correspondingly, and a knife assembly is fixed to the second end of the transmission shaft after passing through the gear box; A brake pad, wherein the brake pad is fixed in the gear box, the brake pad is arranged corresponding to the upper clutch, the transmission shaft is slidably connected to the brake pad, and an elastic component is arranged between the transmission shaft and the brake pad; When the transmission shaft drives the upper clutch to connect with the lower clutch, the output shaft drives the transmission shaft and the knife assembly to rotate; when the transmission shaft drives the upper clutch to connect with the brake plate, the transmission shaft and the knife assembly stop rotating.

2. A clutch brake gearbox device according to claim 1, characterized in that: The lower surface of the brake plate close to the upper clutch is provided with a plurality of first brake teeth, and the upper surface of the upper clutch close to the brake plate is provided with a plurality of second brake teeth. When the second brake teeth are connected with the first brake teeth, the transmission shaft and the knife assembly stop rotating.

3. A clutch brake gearbox device according to claim 2, characterized in that: A plurality of the first brake teeth are arranged in a ring shape on the lower surface of the brake pad, and a first limit step is provided in the transmission direction of the first brake teeth relative to the transmission shaft when working. A plurality of the second brake teeth are arranged in a ring shape on the upper surface of the upper clutch, and a second limit step is provided in the transmission direction of the second brake teeth relative to the transmission shaft when working. When the second brake teeth are connected to the first brake teeth, the second limit step is locked with the first limit step, and with the action of the brake pad fixed in the gear box, the transmission shaft and the knife assembly stop rotating.

4. A clutch brake gearbox device according to claim 1, characterized in that: The upper surface of the lower clutch close to the upper clutch is provided with a plurality of first transmission teeth, and the lower surface of the upper clutch close to the lower clutch is provided with a plurality of second transmission teeth. When the second transmission teeth are connected with the first transmission teeth, the output shaft drives the transmission shaft and the knife assembly to rotate.

5. A clutch brake gearbox device according to claim 4, characterized in that: A plurality of the first transmission teeth are arranged in a ring shape on the upper surface of the lower clutch, and a third limit step is provided in the transmission direction of the first transmission teeth relative to the transmission shaft when working. A plurality of the second transmission teeth are arranged in a ring shape on the lower surface of the upper clutch, and a fourth limit step is provided in the transmission direction of the second transmission teeth relative to the transmission shaft when working. When the second transmission teeth are connected to the first transmission teeth, the fourth limit step is locked with the third limit step, and under the action of the output shaft and the transmission shaft movably arranged in the gear box, the output shaft drives the transmission shaft and the knife assembly to rotate synchronously.

6. A clutch brake gearbox device according to claim 1, characterized in that: The elastic component comprises a spring and a retaining spring, wherein the retaining spring is fixed on the transmission shaft, and the spring is sleeved on the transmission shaft between the retaining spring and the brake pad, and two ends of the spring are respectively in contact with the retaining spring and the brake pad.

7. The clutch brake transmission device according to claim 1, characterized in that: A plurality of transmission rods are provided on the lower surface of the lower clutch near the output shaft, and sun gears are fixed on the plurality of transmission rods; a large gear is fixed in the gear box, and an annular gear ring is provided on the inner wall of the large gear, and the plurality of sun gears are located in the annular gear ring and meshed with the annular gear ring; a pinion is fixed at one end of the output shaft near the lower clutch, and the pinion is located in a plurality of sun gears and meshed with the plurality of sun gears, and a lower connecting head is fixed to the other end of the output shaft after passing through the gear box.

8. The clutch brake transmission device according to claim 1, characterized in that: The gearbox comprises a gearbox lower cover and a gearbox upper cover, which are fixedly connected to each other, a guide sleeve, a bearing bracket, an oil-containing bearing and an output shaft sleeve are arranged in the gearbox upper cover, the upper clutch is slidably arranged in the guide sleeve, the brake pad is fixed between the guide sleeve and the bearing bracket, the oil-containing bearing is fixed on the bearing bracket, one end of the output shaft sleeve is arranged in the gearbox upper cover, the other end of the output shaft sleeve passes through the gearbox upper cover and is fixedly connected to the knife assembly, and the oil-containing bearing and the output shaft sleeve are fixedly sleeved on the transmission shaft.

9. A clutch brake transmission device according to claim 8, characterized in that: An oil seal and a ball bearing are arranged in the lower cover of the gear box. The oil seal and the ball bearing are sleeved on the output shaft. The oil seal and the ball bearing are arranged correspondingly.

10. A household meat grinder, characterized in that: It comprises a main machine, a minced meat cup and a clutch brake gearbox device as described in any one of claims 1 to 9, wherein a driving assembly is arranged in the main machine, the clutch brake gearbox device is installed in the minced meat cup, the minced meat cup is detachably installed on the main machine, the driving assembly is drivingly connected to a lower connector on an output shaft, the minced meat cup is detachably connected to a cup cover, a switch is fixed on the inner wall of the cup cover, and the switch is correspondingly connected to an output shaft sleeve on a transmission shaft.

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