Dual-power transmission dough mixer

Abstract

The invention relates to the technical field of dough kneading machines, and particularly discloses a dual-power transmission dough kneading machine which comprises a rack, a dough hopper is arranged on the rack, a stirring mechanism is arranged in the dough hopper, a driving mechanism is arranged on the rack and used for providing power for overturning of the stirring mechanism and the dough hopper, and two transmission mechanisms are arranged on the portions, on the two sides of the dough hopper, of the rack and used for providing power for overturning of the stirring mechanism and the dough hopper. Power transmission among the driving mechanism, the stirring mechanism and the flour hopper is realized. The stirring mechanism is simultaneously driven from two ends through two groups of transmission mechanisms, the stirring force is balanced, the stirring efficiency is improved, the rotating speeds of power shafts on two sides are coordinated through a differential mechanism, the stability and the reliability of operation are ensured, and the switching of clutch and connection is realized through the matching of the movement of a movable sleeve and the insertion of a connecting pin and a connecting hole; and stable and reliable switching between a stirring mode and a tipping mode is realized.

Description

Technical Field

[0001] This invention relates to the field of dough mixer technology, and more particularly to a dual-power transmission dough mixer. Background Technology

[0002] A dough mixer is a common food processing machine. It is often used to mix and stir flour-based foods, and to evenly mix flour, water and other ingredients to form a dough with a certain degree of elasticity, extensibility and uniform flow. Depending on the function and structural design of the dough mixer, it is divided into various types such as horizontal, vertical, single-shaft, double-shaft and half-shaft.

[0003] Application No. 202422644504.9 discloses an automatic dough mixer, including a frame and a dough hopper, with both ends rotatably connected to the two sides of the frame. A stirring mechanism is installed inside the dough hopper, and the stirring shaft of the stirring mechanism is connected to the output end of a reducer mounted on the frame. The reducer drives the stirring mechanism to move, thereby achieving the purpose of automatic dough mixing. The input end of the reducer is connected to the output end of the main motor mounted on the frame via a sprocket or belt.

[0004] This patented design can precisely control the flipping and straightening of the mixing hopper. However, in actual operation, the main motor drives the mixing mechanism on one side through the reducer. The driving force acts on one end of the mixing mechanism. Long-term operation will cause the mixing mechanism and its supporting bearings to bear significant torsional loads and bending moments. The uneven force on both ends of the mixing mechanism will aggravate the wear of the mixing mechanism, shorten the equipment life, and may also cause the mixing mechanism to shake or deform, interfere with or even collide with the inner wall of the mixing hopper. In addition, the unbalanced force will cause the dough to be subjected to uneven force during the mixing process, making it difficult to achieve the ideal gluten strength and uniformity, thus affecting product quality.

[0005] Therefore, it is necessary to propose a dual-power transmission dough-making machine to overcome the shortcomings of the existing technology. Summary of the Invention

[0006] The purpose of this invention is to solve the problems in the prior art and provide a dual-power transmission dough mixer.

[0007] The technical solution of this invention is: A dual-power transmission dough mixer, comprising: The machine frame has a flour hopper on it, and a stirring mechanism is installed inside the flour hopper. The drive mechanism, mounted on the frame, provides power for the mixing mechanism and the tumbling of the hopper; The transmission mechanism is configured in two sets, which are set on the frame on both sides of the flour hopper to realize the power transmission between the drive mechanism, the stirring mechanism, and the flour hopper.

[0008] Preferably, the transmission mechanism includes a first bearing housing, in which a first drive shaft is rotatably disposed. A large sprocket is fixed at one end of the first drive shaft, and the other end of the first drive shaft is connected to the stirring mechanism for transmission, and that end is provided with an external spline.

[0009] Preferably, the transmission mechanism further includes a second bearing housing, in which a second drive shaft is rotatably mounted. One end of the second drive shaft is fixedly connected to the bucket, and the other end of the second drive shaft is provided with a second flange. The second flange is integrally formed with the second drive shaft, and connecting holes are evenly distributed along the circumference of the second flange.

[0010] Preferably, a movable sleeve is fitted on the first drive shaft, the movable sleeve slides with the first drive shaft, the inner wall of the movable sleeve is provided with an internal spline, the internal spline is adapted to the external spline, and one end of the movable sleeve is provided with an integrally formed first flange.

[0011] Preferably, the first flange has connecting posts evenly distributed around its circumference, each connecting post having a connecting pin that slides with it. The end of the connecting post furthest from the first flange is threaded with a plug. A spring is installed inside the connecting post between the connecting pin and the plug. A circumferentially distributed tension spring is installed between the first flange and the first bearing housing.

[0012] Preferably, a first positioning hole is provided on the circumference of the movable sleeve, and a second positioning hole is provided on the circumference of the first drive shaft. The first positioning hole and the second positioning hole can be connected by a quick-locking pin.

[0013] Preferably, the drive mechanism includes a main motor, a reducer, and a differential. The output shaft of the main motor is connected to the input shaft of the reducer, and the differential is connected to the output shaft of the reducer. The differential has two drive shafts, and a small sprocket is provided at the end of the drive shaft away from the differential. A chain is provided between the small sprocket and the large sprocket.

[0014] Preferably, it also includes a tensioning mechanism, which is mounted on the frame and is used to tension the chain. The tensioning mechanism includes a tensioning seat, a tensioning connecting rod, and a tensioning sprocket. One end of each of the two tensioning connecting rods is hinged to the tensioning seat, and the two tensioning sprockets are respectively hinged to the other end of the two tensioning connecting rods. An L-shaped bracket is hinged to the end of the tensioning connecting rod that is hinged to the tensioning sprocket, and a positive and negative threaded rod is threaded between the two L-shaped brackets.

[0015] Preferably, the stirring mechanism includes a stirring shaft and a stirrer. The stirring shaft is rotatably disposed inside the flour hopper, with both ends of the stirring shaft extending outwards to the sides of the flour hopper and passing through the second drive shaft for transmission connection with the first drive shaft. The stirrer is detachably disposed on the stirring shaft.

[0016] Preferably, the frame is provided with symmetrically distributed fixed plates, and two sets of transmission mechanisms are respectively set on the fixed plates. The frame is provided with spring pins, and the side wall of the bucket is provided with plug-in seats that are compatible with the spring pins.

[0017] Compared with the prior art, the beneficial effects of the present invention are: 1. It adopts a dual-power drive mechanism, which drives the mixing mechanism from both ends of the mixing shaft simultaneously to generate strong torque and even mixing force. This effectively overcomes the huge resistance after the dough is formed, and greatly improves the mixing efficiency and the uniformity of the dough. 2. By coordinating the speed of the two drive shafts through the differential, the speed error that may exist in the transmission on both sides is automatically compensated, preventing internal stress, vibration and component damage caused by asynchronous speed, and ensuring the stability and reliability of operation. 3. By moving the movable sleeve and engaging the connecting pin and connecting hole, the clutch and engagement modes can be switched smoothly and reliably, enabling a smooth transition between stirring and tipping modes. The quick-locking pin and tension spring ensure precise locking and automatic reset of the position, making operation simple and safe. 4. By synchronously adjusting the tension sprockets on both sides using the forward and reverse screws, the chain elongation caused by wear can be effectively compensated, maintaining a tight and stable transmission and extending the chain's lifespan. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the main structure of the present invention; Figure 2 This is a schematic diagram of the left-side structure of the present invention; Figure 3 This is a top view of the structure of the present invention; Figure 4 This is a three-dimensional structural diagram of the present invention (with the driving mechanism hidden). Figure 5 For the present invention Figure 4 A magnified schematic diagram of the structure at point A; Figure 6 This is a partial cross-sectional view of the present invention; Figure 7 This is a schematic diagram of the movable sleeve structure of the present invention; Figure 8 This is a schematic diagram of the first drive shaft structure of the present invention; Figure 9 This is a schematic diagram of the second drive shaft structure of the present invention; Figure 10 This is a schematic diagram of the tensioning mechanism of the present invention.

[0019] The components are as follows: 1. Frame; 2. Flour hopper; 3. First bearing seat; 4. First drive shaft; 5. Large sprocket; 6. External spline; 7. Moving sleeve; 8. Internal spline; 9. First flange; 10. Connecting column; 11. Connecting pin; 12. Seal; 13. Spring; 14. Tension spring; 15. First positioning hole; 16. Second positioning hole; 17. Quick lock pin; 18. Second bearing seat; 19. Second drive shaft; 20. Second flange; 21. Connecting hole; 22. Main motor; 23. Reducer; 24. Differential; 25. Power shaft; 26. Small sprocket; 27. Chain; 28. Tensioning seat; 29. ​​Tensioning connecting rod; 30. Tensioning sprocket; 31. L-shaped bracket; 32. Positive and negative threaded rod; 33. Stirring shaft; 34. Stirrer; 35. Fixing plate; 36. Spring pin; 37. Plug-in seat; 38. Baffle. Detailed Implementation

[0020] To make the technical means, technical features, inventive purpose and technical effects of this invention easier to understand, the invention will be further described below with reference to specific illustrations.

[0021] like Figures 1-3 As shown, a dual-power transmission dough mixer includes a frame 1, a dough hopper 2, a drive mechanism, and a transmission mechanism. The dough hopper 2, drive mechanism, and transmission mechanism are all mounted on the frame 1. The two sides of the dough hopper 2 are rotatably connected to the frame 1. A stirring mechanism is installed inside the dough hopper 2. There are two sets of transmission mechanisms, which are respectively mounted on the frame 1 on both sides of the dough hopper 2. The drive mechanism is connected to both ends of the stirring mechanism through the two sets of transmission mechanisms, so as to realize the synchronous drive of the stirring mechanism from both ends to stir the flour in the dough hopper 2, so that the flour is subjected to more uniform force, significantly improving the stirring efficiency and uniformity. In addition, the transmission mechanism can also enable the drive mechanism to drive the dough hopper 2 to rotate through power transmission, so as to pour the kneaded dough out of the dough hopper 2.

[0022] like Figure 2 As shown, the mixing mechanism includes a mixing shaft 33 and a mixer 34. The mixing shaft 33 is connected to both sides of the flour hopper 2 via bearings, enabling the mixing shaft 33 to rotate relative to the flour hopper 2. Both ends of the mixing shaft 33 extend outwards to the sides of the flour hopper 2, connecting with the transmission mechanism. The mixer 34 is bolted to the mixing shaft 33. This connection method facilitates disassembly, maintenance, and replacement, reducing maintenance costs. The mixer 34 adopts, but is not limited to, a spiral steel plate structure, which provides good mixing effect for flour.

[0023] like Figures 1-3As shown, the drive mechanism includes a main motor 22, a reducer 23, and a differential 24. The main motor 22, reducer 23, and differential 24 are all mounted on the lower part of the frame 1. The output shaft of the main motor 22 is connected to the input shaft of the reducer 23 via a drive, which can be a belt drive or other suitable drive method. The differential 24 is connected to the output shaft of the reducer 23 via a drive. Two power shafts 25 are connected to the output ends on both sides of the differential 24. Small sprockets 26 are fixedly installed at the ends of the power shafts 25 away from the differential 24. The output power of the main motor 22 is reduced and increased in torque by the reducer 23, and then transmitted to the two power shafts 25 through the differential 24. Preferably, the main motor 22 is a servo motor, which, together with the differential 24, achieves precise speed control and torque adjustment to ensure the stability of the dough kneading process and the consistency of the dough quality.

[0024] like Figures 4-9 As shown, the transmission mechanism includes a fixed plate 35, a first bearing seat 3, and a second bearing seat 18. The fixed plate 35 is mounted on the frame 1. Both the first bearing seat 3 and the second bearing seat 18 are mounted on the fixed plate 35. The first bearing seat 3 and the second bearing seat 18 are spaced apart and parallel, and are coaxial. A first drive shaft 4 is penetratingly connected inside the first bearing seat 3. The first drive shaft 4 is connected to the first bearing seat 3 through a bearing, realizing rotation relative to the first bearing seat 3. A large sprocket 5 is fixedly mounted on one end of the first drive shaft 4. A chain 27 is installed between the large sprocket 5 and the small sprocket 26. The chain 27 drives the transmission mechanism. The transmission 7 transmits the power of the main motor 22 to the first drive shaft 4. The other end of the first drive shaft 4 is machined with an external spline 6. A movable sleeve 7 is installed on the circumference of the end where the external spline 6 of the first drive shaft 4 is located. The movable sleeve 7 and the first drive shaft 4 are in sliding fit. The inner wall of the movable sleeve 7 is machined with an internal spline 8. The internal spline 8 is adapted to the external spline 6. While the movable sleeve 7 slides relative to the first drive shaft 4, the power of the first drive shaft 4 can be transmitted to the movable sleeve 7 through the fit of the internal spline 8 and the external spline 6. A first flange 9 is machined at one end of the movable sleeve 7. The first flange 9 and the movable sleeve 7 are integrally formed. A second drive shaft 19 is connected through the second bearing housing 18. The second drive shaft 19 is connected to the second bearing housing 18 via a bearing, enabling the second drive shaft 19 to rotate relative to the second bearing housing 18. One end of the second drive shaft 19 is fixedly connected to the hopper 2, and the other end of the second drive shaft 19 is machined with a second flange 20. The second flange 20 is integrally formed with the second drive shaft 19. The second flange 20 is machined with circumferentially distributed connecting holes 21. The second drive shaft 19 is machined into a hollow structure. The end of the stirring shaft 33 located outside the hopper 2 passes through the hollow part of the second drive shaft 19 and is inserted into the first drive shaft 4. The stirring shaft 33 and the first drive shaft 4 are connected by, but not limited to, a key to achieve power transmission. The stirring shaft 33 and the second drive shaft 19 are connected by a bearing to achieve relative rotation between the stirring shaft 33 and the second drive shaft 19. A connecting post 10 is machined on the end of the first flange 9 facing the movable sleeve 7. Multiple connecting posts 10 are evenly distributed circumferentially around the axis of the first flange 9. The connecting posts 10 correspond to the connecting holes 21. A connecting pin 11 is installed inside the connecting post 10, and the connecting pin 11 slides against the connecting post 10. The end of the connecting post 10 away from the first flange 9 is open to facilitate the installation of the connecting pin 11. A plug 12 is threaded into this opening. A spring 13 is fitted onto the connecting pin 11 inside the connecting post 10. The spring 13 abuts against the connecting pin 11 and the plug 12. One end of the spring 13 abuts against the connecting pin 11, and the other end of the spring 13 abuts against the plug 12. The spring 13 is initially compressed. Under the action of the spring 13, the connecting pin 11 extends through the first flange 9 and away from the first flange 9. A circumferentially distributed tension spring 14 is connected between the first flange 9 and the first bearing seat 3. Under the action of the tension spring 14, the moving sleeve 7 and the first flange 9 slide along the first drive shaft 4 and move closer to the first bearing seat 3. When it is necessary for the moving sleeve 7 and the first flange 9 to move away from the first bearing seat 3, manual intervention is required to push them. The movement needs to overcome the tension of the tension spring 14. A first positioning hole 15 is machined on the circumference of the movable sleeve 7, and a second positioning hole 16 is machined on the circumference of the first drive shaft 4. When the movable sleeve 7 is pushed to move away from the first bearing seat 3, the first positioning hole 15 and the second positioning hole 16 coincide. A quick-locking pin 17 is inserted into the first positioning hole 15 and the second positioning hole 16 to lock the position of the movable sleeve 7 on the first drive shaft 4. In the locked state, the first flange 9 and the second flange 20 abut against each other. At this time, when the axis of the connecting pin 11 coincides with that of the connecting hole 21, the connecting pin 11 and the connecting hole 21 are connected. Through the elastic action of the spring 13, the connecting pin 11 can automatically insert. The power is transmitted through the connecting hole 21. The power of the first drive shaft 4 is transmitted to the second drive shaft 19 through the cooperation of the inner spline 8 and the outer spline 6 and the insertion of the connecting pin 11 into the connecting hole 21. When there is a deviation between the axis of the connecting pin 11 and the axis of the connecting hole 21, the connecting pin 11 first abuts against the surface of the second flange 20, so that the connecting pin 11 is subjected to force and thus overcomes the force of the spring 13 and retracts into the connecting column 10. The first flange 9 and the second flange 20 rotate relative to each other until the axis of the connecting pin 11 and the axis of the connecting hole 21 are aligned. Under the action of the spring 13, the connecting pin 11 extends out and inserts into the connecting hole 21, realizing the transmission of power, thereby driving the bucket 2 to flip.

[0025] like Figure 10 As shown, a tensioning mechanism is also installed on the frame 1 for tensioning the chain 27. The tensioning mechanism includes a tensioning seat 28, a tensioning connecting rod 29, and a tensioning sprocket 30. The tensioning seat 28 is installed on the frame 1. There are two tensioning connecting rods 29, one end of which is hinged to the tensioning seat 28. The tensioning sprocket 30 is pivotally connected to the other end of the tensioning connecting rod 29. An L-shaped bracket 31 is also hinged to the end of the tensioning connecting rod 29 where the tensioning sprocket 30 is installed. A positive and negative threaded screw 32 is connected between the two L-shaped brackets 31, and the positive and negative threaded screw 32 is threadedly connected to the L-shaped bracket 31. After installation, the two tension sprockets 30 are located on the outer sides of the chain 27 and are engaged with the chain 27 for transmission. By rotating the forward and reverse threaded screws 32, the two L-shaped brackets 31 can be moved closer or further apart, thereby adjusting the distance between the two tension sprockets 30 and tensioning the chain 27 to maintain reliable and stable transmission. Nuts can also be connected to the forward and reverse threaded screws 32. After the forward and reverse threaded screws 32 are adjusted to the correct position, the nuts can be tightened in the opposite direction to press against the L-shaped brackets 31, locking the relative position of the L-shaped brackets 31 and the forward and reverse threaded screws 32 and preventing loosening caused by vibration during use.

[0026] like Figure 5As shown, a spring pin 36 is installed on the frame 1, and a connector 37 is installed on the side wall of the dough bucket 2. The spring pin 36 and the connector 37 are connected to each other to lock and limit the dough bucket 2. During the dough kneading operation, the dough bucket 2 is kept in a vertical state. When the dough kneading is completed, the connection of the spring pin 36 in the connector 37 is released, which can realize the flipping of the dough bucket 2. There are multiple spring pins 36 and connectors 37, which are evenly distributed to ensure the stable and reliable limiting of the dough bucket 2.

[0027] like Figure 1 and Figure 4 As shown, the top of the dough hopper 2 is an open structure. A baffle 38 can be installed at the open top of the dough hopper 2 to achieve a semi-closed cover on the top of the dough hopper 2. This facilitates the addition of raw materials into the dough hopper 2 and the pouring out of the dough, while also preventing the raw materials from splashing during mixing.

[0028] The working principle of this invention is: Kneading mode: Spring pin 36 is inserted into the connector 37 to keep the dough hopper 2 facing upward. Flour, water and other raw materials are put into the dough hopper 2 through the unobstructed opening of the baffle 38. The main motor 22 is started. The main motor 22 drives the differential 24 through the reducer 23, which in turn drives the two power shafts 25 to rotate. Through the transmission of the small sprocket 26, chain 27 and large sprocket 5, the first drive shaft 4 and the stirring shaft 33 connected to the first drive shaft 4 are driven to rotate. The stirring shaft 33 drives the stirrer 34 to stir the raw materials in the dough hopper 2 to achieve the kneading operation. At this time, the moving sleeve 7 and the first flange 9 are in a position close to the first bearing seat 3 under the action of the tension spring 14. There is no connection between the connecting pin 11 and the connecting hole 21. The stirring shaft 33 and the second drive shaft 19 only rotate relative to each other and do not rotate synchronously. Discharge mode: After the dough is kneaded, the first flange 9 is manually pushed towards the second flange 20. This push requires overcoming the force of the tension spring 14 to bring the first flange 9 and the second flange 20 into contact. The axes of the first positioning hole 15 and the second positioning hole 16 are aligned. A quick-locking pin 17 is inserted into the first positioning hole 15 and the second positioning hole 16. Tightening the quick-locking pin 17 completes the installation and positioning of the moving sleeve 7 on the second drive shaft 19. The insertion connection between the spring pin 36 and the connector 37 is released. The main motor 22 drives the first drive shaft 4 to rotate slowly. If the axes of the connecting pin 11 and the connecting hole 21 are aligned, the connecting pin 11 can be inserted into the connecting hole 21, and power is transmitted. The second drive shaft 19 drives the dough hopper 2 to flip, pouring out the kneaded dough. If the connecting pin 11 and the connecting hole 21 are not aligned, when the first flange 9 moves, the second flange 20 applies a reaction force to the connecting pin 11, overcoming the action of the spring 13 and causing the connecting pin 11 to retract into the connecting post 10. The main motor 22 drives the first drive shaft 4 to rotate slowly, and the first flange 9 and the second flange 20 rotate relative to each other. When the connecting pin 11 aligns with the connecting hole 21, the connecting pin 11 extends out and inserts into the connecting hole 21 under the action of the spring 13, realizing the transmission of power to the second drive shaft 19, thereby driving the dough hopper 2 to flip and pour out the kneaded dough. Reset process: After the dough is poured out, the main motor 22 reverses to reset the dough hopper 2, re-inserts the spring pin 36 into the connector 37, and removes the connection of the quick-locking pin 17 in the first positioning hole 15 and the second positioning hole 16. The first flange 9 moves towards the first bearing seat 3 under the action of the tension spring 14, releases the connection between the connecting pin 11 and the connecting hole 21, disconnects the power transmission between the first drive shaft 4 and the second drive shaft 19, and repeats the dough kneading process.

[0029] Throughout the operation, the differential 24 can automatically adjust the speed difference between the two power shafts 25 to ensure the synchronous rotation of the first drive shafts 4 on both sides, and prevent vibration and damage caused by speed differences in the transmission on both sides.

[0030] The above description is merely a preferred embodiment of the present invention and is not intended to limit the scope of the invention. All equivalent changes and modifications made in accordance with the scope of the claims of this invention should fall within the technical scope of this invention.

Claims

1. A dual-power transmission dough mixer, characterized in that: include: A frame (1) is provided with a flour hopper (2), and a stirring mechanism is provided inside the flour hopper (2); A drive mechanism is mounted on the frame (1) and is used to provide power for the stirring mechanism and the hopper (2) to rotate. The transmission mechanism is configured as two sets, which are set on the frame (1) on both sides of the hopper (2) to realize the power transmission between the drive mechanism, the stirring mechanism and the hopper (2).

2. The dual-power transmission dough mixer according to claim 1, characterized in that: The transmission mechanism includes a first bearing seat (3), a first drive shaft (4) is rotatably disposed inside the first bearing seat (3), a large sprocket (5) is fixedly disposed at one end of the first drive shaft (4), the other end of the first drive shaft (4) is connected to the stirring mechanism for transmission, and an external spline (6) is provided at that end.

3. The dual-power transmission dough mixer according to claim 2, characterized in that: The transmission mechanism also includes a second bearing seat (18), in which a second drive shaft (19) is rotatably disposed. One end of the second drive shaft (19) is fixedly connected to the bucket (2), and the other end of the second drive shaft (19) is provided with a second flange (20). The second flange (20) and the second drive shaft (19) are integrally formed, and the second flange (20) has connecting holes (21) evenly distributed along the circumference.

4. The dual-power transmission dough mixer according to claim 2, characterized in that: A movable sleeve (7) is fitted on the first drive shaft (4). The movable sleeve (7) is slidably fitted with the first drive shaft (4). An inner spline (8) is provided on the inner wall of the movable sleeve (7). The inner spline (8) is adapted to the outer spline (6). A first flange (9) is integrally formed at one end of the movable sleeve (7).

5. The dual-power transmission dough mixer according to claim 4, characterized in that: The first flange (9) has connecting columns (10) evenly distributed around its circumference. A connecting pin (11) is provided inside the connecting column (10). The connecting pin (11) and the connecting column (10) are slidably engaged. A plug (12) is threadedly connected to the end of the connecting column (10) away from the first flange (9). A spring (13) is provided inside the connecting column (10) and between the connecting pin (11) and the plug (12). A tension spring (14) is evenly distributed around the circumference between the first flange (9) and the first bearing seat (3).

6. The dual-power transmission dough mixer according to claim 4, characterized in that: The movable sleeve (7) is provided with a first positioning hole (15) on its circumference, and the first drive shaft (4) is provided with a second positioning hole (16) on its circumference. The first positioning hole (15) and the second positioning hole (16) can be connected by a quick-locking pin (17).

7. The dual-power transmission dough mixer according to claim 2, characterized in that: The drive mechanism includes a main motor (22), a reducer (23) and a differential (24). The output shaft of the main motor (22) is connected to the input shaft of the reducer (23). The differential (24) is connected to the output shaft of the reducer (23). The differential (24) is provided with two power shafts (25). A small sprocket (26) is provided at the end of the power shaft (25) away from the differential (24). A chain (27) is provided between the small sprocket (26) and the large sprocket (5).

8. The dual-power transmission dough mixer according to claim 7, characterized in that: It also includes a tensioning mechanism, which is mounted on the frame (1) and is used to tension the chain (27). The tensioning mechanism includes a tensioning seat (28), a tensioning connecting rod (29), and a tensioning sprocket (30). One end of each of the two tensioning connecting rods (29) is hinged to the tensioning seat (28), and the two tensioning sprockets (30) are respectively hinged to the other end of the two tensioning connecting rods (29). An L-shaped bracket (31) is hinged to the end of the tensioning connecting rod (29) that is hinged to the tensioning sprocket (30). A positive and negative threaded screw (32) is threaded between the two L-shaped brackets (31).

9. The dual-power transmission dough mixer according to claim 3, characterized in that: The stirring mechanism includes a stirring shaft (33) and a stirrer (34). The stirring shaft (33) is rotatably disposed inside the flour hopper (2). Both ends of the stirring shaft (33) extend outwards to the sides of the flour hopper (2) and pass through the second drive shaft (19) to be connected to the first drive shaft (4). The stirrer (34) is detachably disposed on the stirring shaft (33).

10. The dual-power transmission dough mixer according to claim 1, characterized in that: The frame (1) is provided with symmetrically distributed fixed plates (35), and two sets of transmission mechanisms are respectively provided on the fixed plates (35). The frame (1) is provided with spring pins (36), and the side wall of the hopper (2) is provided with plugs (37) that are compatible with the spring pins (36).

Images