Preparation device for high-protein or high-fat beverage

Abstract

The invention relates to the technical field of beverage preparation, in particular to a high-protein or high-fat beverage preparation device which comprises a heat conduction pipe arranged at the lower end of an output rotating rod and extending into an inner cavity of a temperature adjusting tank, a heat conduction rod matched with the heat conduction pipe is arranged in the temperature adjusting tank, and a spiral heat conduction piece is arranged on the outer wall of the heat conduction pipe. A spiral heat conducting sheet is arranged on one side of the temperature adjusting tank, the spiral heat conducting sheet is attached to the inner wall of the temperature adjusting tank, a heat preservation tank communicated with the temperature adjusting tank is arranged on the other side of the temperature adjusting tank, a discharging assembly is arranged in the heat preservation tank, and a transmission assembly linked with the discharging assembly to control discharging is arranged on the cross beam. And meanwhile, rapid discharging is achieved through forward rotation of the spiral heat-conducting fins, raw materials in the temperature-adjusting tank are conveyed into the heat-preserving tank through reverse rotation of the spiral heat-conducting fins, long-time temperature adjustment is avoided, and therefore intermittent beverage temperature-adjusting preparation is adapted.

Description

Technical Field

[0001] The present invention relates to the technical field of beverage preparation, in particular to a device for preparing high-protein or high-fat beverages. Background Art

[0002] High-protein or high-fat drinks include coconut milk, full-time milk, etc. During the preparation process of the drinks, it is usually necessary to pre-make the raw materials in batches and place them in a barrel. When preparation is required, the temperature and taste are adjusted.

[0003] High-protein or high-fat drinks are mostly common instant drinks, such as milk tea, which are all made on the spot. The preparation process requires fast preparation speed and simple finished products. When the concentration of liquid raw materials of high-protein or high-fat drinks is high, temperature transmission is more difficult during the preparation process. In order to adapt to the requirements of hot drinks, room temperature, less ice, and ice-free drinks at different temperatures, the pre-prepared raw materials are mostly at room temperature, and then the temperature is adjusted according to the preparation requirements.

[0004] In the prior art, a fast temperature adjustment device, such as a heating rod or a cooling rod, is usually set between the barrel and the discharge end, and heat is transferred through a compressor to achieve the purpose of adjusting the discharge temperature of the beverage. However, since the preparation process is not continuous, this will cause the raw materials to be continuously adjusted at the temperature adjustment position. For example, in the common milk tea shop beverage preparation, the beverage will only be prepared when the customer places an order. In order to adapt to the preparation speed, the temperature adjustment efficiency of the heating rod or the cooling rod is higher. High-protein or high-fat beverage raw materials will deteriorate if heated for a long time, and will be blocked if frozen for a long time, making it impossible to discharge. Summary of the Invention

[0005] The object of the present invention is to provide a device for preparing high-protein or high-fat drinks to solve the problems raised in the above background technology.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] The discharging opening of the charging aperture is set as below: The discharging opening of the charging aperture is set as below: and the charging aperture is set as below: The charging aperture is set as below: The discharging opening of the charging aperture is set as below:

[0008] Preferably, the base is arranged in a stepped shape, and a limit seat for stably placing the barrel is provided at the upper end of the base. An end cover is provided at the upper end of the barrel, and an air valve for adjusting the internal pressure of the barrel is provided on the end cover.

[0009] Preferably, a discharge pipe is provided on one side of the barrel, and the discharge pipe is connected to the upper end of the temperature control tank through a uniform distribution component, and a discharge pipe is provided at the lower end of the temperature control tank, and the second control valve is provided at the end of the discharge pipe, and the upper end of the temperature control tank is provided with a first side port and a second side port, the second side port is connected to the uniform distribution component, the first side port is connected to the insulation tank, and the first side port is located at the upper end of the second side port.

[0010] Preferably, the uniform distribution component includes a conical uniform distribution box, one end port of the uniform distribution box is connected to the discharge pipe through the first control valve, the middle section of the uniform distribution box extends in a fan shape, and a plurality of groups of spaced partitions are provided in the inner cavity of the uniform distribution box, and diversion grooves are provided between adjacent partitions. The ends of the multiple groups of diversion grooves are all connected to the first side port, and the first control valve is provided with a spring valve stem elastically mounted to control the opening and closing of the valve, and the lower end of the beam is provided with a pressure rod that cooperates with the spring valve stem for extrusion.

[0011] Preferably, a temperature regulating plate is provided in the temperature regulating tank, the temperature regulating plate is fixed on the inner wall of the temperature regulating tank, a heat conducting rod is vertically provided in the middle of the upper end of the temperature regulating plate, a plurality of groups of through grooves distributed in a circular array are provided on the outer side of the temperature regulating plate, an elastic switch is provided on the upper end of the heat conducting rod, and a socket for mating with the heat conducting rod is provided on the heat conducting tube, and the inner wall of the upper end of the socket is pressed onto the elastic switch.

[0012] Preferably, the lifting assembly includes a lifting rod fixed on the top beam, the upper end of the lifting rod is fixed on the top beam, the telescopic end of the lifting rod is fixedly connected to the upper end of the cross beam, and the motor is fixed on the cross beam.

[0013] Preferably, the discharging assembly includes a piston and a pull rod, and an upper frame is provided at the upper end of the insulation tank, and a through hole is provided in the middle of the upper end of the upper frame. The middle section of the pull rod slides through the through hole, and the lower end of the pull rod extends into the inner cavity of the insulation tank, and the lower end of the pull rod is connected to a piston that fits the inner wall of the insulation tank, and the upper end of the pull rod is connected to the cross beam.

[0014] Preferably, an intermediate ring is fixedly installed on the outer wall of the middle section of the pull rod, a spring is sleeved on the pull rod, the intermediate ring is located at the lower end of the upper horizontal plate of the upper frame, and the upper and lower ends of the spring are respectively pressed on the intermediate ring and the upper frame.

[0015] Preferably, a plurality of groups of blocks distributed in a circumferential array are provided on the inner wall of the heat preservation tank, the piston slides and fits the inner wall of the heat preservation tank, the piston is located at the lower end of the block, and the block is located at the lower end of the first side opening.

[0016] Preferably, the transmission assembly includes a fixed pulley and a traction rope, the fixed pulley is fixedly mounted on the top beam, the traction rope is smoothly wound and extended along the fixed pulley, the end of the cross beam and the end of the pull rod are both provided with hanging rings, and the two ends of the traction rope are respectively fixedly connected to the cross beam and the pull rod by the hanging rings.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] The present invention increases the heat transfer area and improves the temperature control efficiency by providing a temperature control tank with a spiral heat conducting plate. At the same time, the forward rotation of the spiral heat conducting plate is utilized to realize rapid discharge. The reverse rotation of the spiral heat conducting plate is utilized to transport the raw materials in the temperature control tank to the insulation tank, thereby avoiding long-term temperature control, thereby adapting to intermittent beverage temperature control preparation. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of the present invention;

[0020] Figure 2 This is a schematic diagram of the three-dimensional structure of the spiral heat conducting plate of the present invention;

[0021] Figure 3 This is a schematic diagram of the three-dimensional structure of the spiral heat conducting plate of the present invention for lifting and rotating installation;

[0022] Figure 4 It is a schematic diagram of the three-dimensional structure of the heat preservation tank and the temperature regulating tank of the present invention;

[0023] Figure 5 This is a schematic diagram of the uniform distribution component structure of the present invention;

[0024] Figure 6 This is a schematic diagram of the three-dimensional structure of the heat conducting rod of the present invention installed in the temperature regulating tank;

[0025] Figure 7This is a schematic diagram of the three-dimensional structure of the pull rod of the present invention being installed on the insulation tank.

[0026] In the figure: 1. base; 2. barrel; 3. limit seat; 4. end cover; 5. discharge pipe; 6. first control valve; 7. spring valve stem; 8. uniform distribution box; 9. temperature regulating tank; 10. temperature regulating plate; 11. through groove; 12. heat conducting rod; 13. discharge pipe; 14. second control valve; 15. crossbeam; 16. pressure rod; 17. motor; 18. output rotating rod; 19. top beam; 20. lifting rod; 21. fixed pulley; 22. traction rope; 23. pull rod; 24. heat preservation tank; 25. heat conducting pipe; 26. spring; 27. upper rack; 28. middle ring; 29. ​​first side port; 30. stopper; 31. piston; 32. socket; 33. spiral heat conducting plate; 34. hanging ring; 35. second side port; 36. through hole; 37. diverter groove; 38. partition; 39. elastic switch. DETAILED DESCRIPTION

[0027] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0028] See also Figures 1 to 7 , the present invention provides a technical solution:

[0029] Example 1: A preparation device for high-protein or high-fat beverages, including a base 1 and a top beam 19 for placing the preparation equipment, a barrel 2 for storing liquid beverages is provided on the base 1, a second control valve 14 for controlling the discharge is provided on one side of the lower end of the barrel 2, a temperature control component for temperature control is provided between the barrel 2 and the second control valve 14, the temperature control component includes a temperature control tank 9 for temperature control and a heat preservation tank 24 for temporary heat preservation, the upper end of the temperature control tank 9 is provided with a crossbeam 15 driven to rise and fall by a lifting component, an output rotating rod 18 driven by a motor 17 is installed on the crossbeam 15, the lower end of the output rotating rod 18 is provided with a heat pipe 25 extending into the inner cavity of the temperature control tank 9, a heat conducting rod 12 cooperating with the heat conducting pipe 25 is provided in the temperature control tank 9, and a spiral heat conducting plate 33 is provided on the outer wall of the heat conducting pipe 25.

[0030] The forward or reverse rotation of the spiral heat conducting plate 33 is controlled by the motor 17, and the height of the spiral heat conducting plate 33 is controlled by the lifting assembly. The heat conducting rod 12 and the heat conducting pipe 25 cooperate to realize heat transfer and achieve the purpose of temperature regulation.

[0031] The spiral heat conducting sheet 33 is attached to the inner wall of the temperature regulating tank 9. The other side of the temperature regulating tank 9 is provided with an interconnected heat preservation tank 24. A discharge assembly is provided in the heat preservation tank 24. A transmission assembly for controlling the discharge of the material is provided on the crossbeam 15.

[0032] The spiral heat conducting plate 33 is used to increase the heat transfer area and improve the temperature control efficiency of beverage raw materials with higher concentrations. The discharge component is used to reuse the raw materials in the insulation tank 24, and the transmission component is used to realize the integrated linkage between the insulation tank 24 and the structure in the temperature control tank 9.

[0033] Working principle: First, the pre-made room temperature beverage is placed in the barrel 2. During the preparation process, when the temperature needs to be adjusted, the lifting assembly is used to insert the spiral heat conductive sheet 33 and the heat conductive tank 25 into the temperature adjustment tank 9, and the heat conductive rod 12 is used to transfer the heat generated by cooling or heating to the spiral heat conductive sheet 33, and the room temperature beverage ingredients fall on the spiral heat conductive sheet 33, which increases the area and efficiency of heat transfer, and at the same time realizes the dispersion and even spreading of the beverage ingredients, further achieving uniform temperature adjustment.

[0034] During the process of lowering and plugging, the piston 31 in the heat-insulating tank 24 is driven to rise.

[0035] However, the temperature-adjusted raw materials are discharged through the discharge tank 13 and the second control valve 14 by the forward rotation of the spiral heat conducting plate 33; within a set appropriate time interval, when no material is prepared for discharge, the lifting assembly drives the spiral heat conducting plate 33 to rise, and the motor 17 rotates in the reverse direction to transport the beverage in the temperature-adjusting tank 9 to the insulation tank 24. As it rises, the piston 31 descends, and the temperature-adjusted beverage is temporarily stored in the insulation tank 24.

[0036] When preparation is needed again, the lifting assembly drives the spiral heat conducting plate 33 downward again. During this downward movement, the piston 31 is driven upward, thereby transporting the already tempered beverage in the insulation tank 24 and the beverage in the barrel 2 to the tempering tank 9 for mixing. The temperature of the mixed beverage is much closer to that of the tempered beverage, thereby reducing the time for the initial tempering and improving the efficiency of the beverage tempering preparation. This repetitive cycle avoids the need for continuous tempering of the beverage in the tempering tank and improves the tempering efficiency of the beverage after the interval tempering. It is suitable for the efficient preparation and production of high-concentration, high-protein or high-fat beverages.

[0037] Example 2: Based on Example 1, the base 1 is set to be stepped, and the upper end of the base 1 is provided with a limit seat 3 for stably placing the barrel 2, and the upper end of the barrel 2 is provided with an end cover 4, and the end cover 4 is provided with an air valve for adjusting the internal pressure of the barrel 2.

[0038] The stability of the placement of the barrel 2 is ensured by setting the limit seat 3, and the internal pressure is balanced by the air valve to ensure smooth discharge of the barrel 2.

[0039] A discharge pipe 5 is provided on one side of the barrel 2, and the discharge pipe 5 is connected to the upper end of the temperature regulating tank 9 through a uniform distribution component. A discharge pipe 13 is provided at the lower end of the temperature regulating tank 9, and a second control valve 14 is provided at the end of the discharge pipe 13. The upper end of the temperature regulating tank 9 is provided with a first side port 29 and a second side port 35, and the second side port 35 is connected to the uniform distribution component, and the first side port 29 is connected to the insulation tank 24, and the first side port 29 is located at the upper end of the second side port 35.

[0040] The second side opening 35 is provided to ensure that the raw materials in the barrel 2 fall into the temperature regulating tank 9, and the first side opening 29 is provided to allow the temperature-regulated beverage to flow back into the temperature-insulating tank 24 under the action of the spiral heat conducting plate 33. At the same time, the height difference of the side opening is provided to prevent the raw materials in the barrel 2 from entering the temperature-insulating tank 24.

[0041] The uniform distribution component includes a conical uniform distribution box 8, one end port of the uniform distribution box 8 is connected to the discharge pipe 5 through the first control valve 6, the middle section of the uniform distribution box 8 extends in a fan shape, and a plurality of groups of spaced partitions 38 are provided in the inner cavity of the uniform distribution box 8, and diversion grooves 37 are provided between adjacent partitions 38. The ends of the multiple groups of flow grooves 37 are all connected to the first side port 29, and the first control valve 6 is provided with a spring valve stem 7 for elastically installing the control valve opening and closing, and the lower end of the cross beam 15 is provided with a pressure rod 16 for cooperating with the spring valve stem 7 for extrusion.

[0042] By setting up the uniform distribution box 8, the high-concentration beverage raw materials are evenly distributed and diverted, so that the temperature adjustment is more uniform. By setting up the first control valve 6, the beverage is controlled to enter the temperature adjustment tank 9. The pressure rod 16 and the spring valve stem 7 are used to control the opening and closing of the first control valve 6, and then the lifting drive is used to realize the whole process of feeding, temperature adjustment, reflux and backflow during the temperature adjustment process.

[0043] Example 3: On the basis of Example 2, a temperature regulating plate 10 is provided in the temperature regulating tank 9, and the temperature regulating plate 10 is fixed on the inner wall of the temperature regulating tank 9. A heat conducting rod 12 is vertically provided in the middle of the upper end of the temperature regulating plate 10, and a plurality of groups of through grooves 11 distributed in a circular array are provided on the outer side of the temperature regulating plate 10. An elastic switch 39 is provided on the upper end of the heat conducting rod 12, and a socket 32 ​​for mating with the heat conducting rod 12 is provided on the heat conducting tube 25, and the inner wall of the upper end of the socket 32 ​​is pressed onto the elastic switch 39.

[0044] By providing the elastic switch 39 , the operation of the heat conducting rod 12 can be controlled by lifting and pressing.

[0045] The lifting assembly includes a lifting rod 20 fixed on the top beam 19 , the upper end of the lifting rod 20 is fixed on the top beam 19 , the telescopic end of the lifting rod 20 is fixedly connected to the upper end of the cross beam 15 , and the motor 17 is fixed on the cross beam 15 .

[0046] The height of the crossbeam 15 can be adjusted by setting the lifting rod 20, so as to adapt to the entire temperature adjustment and discharge process.

[0047] The discharge assembly includes a piston 31 and a pull rod 23. The upper end of the insulation tank 24 is provided with an upper frame 27. A through hole 36 is provided in the middle of the upper end of the upper frame 27. The middle section of the pull rod 23 slides through the through hole 36. The lower end of the pull rod 23 extends into the inner cavity of the insulation tank 24. The lower end of the pull rod 23 is connected to the piston 31 that fits the inner wall of the insulation tank 24. The upper end of the pull rod 23 is connected to the cross beam 15; the outer wall of the middle section of the pull rod 23 is fixed. An intermediate ring 28 is fixedly installed, and a spring 26 is sleeved on the pull rod 23. The intermediate ring 28 is located at the lower end of the upper horizontal plate of the upper end of the upper frame 27, and the upper and lower ends of the spring 26 are pressed on the intermediate ring 28 and the upper frame 27 respectively; a plurality of groups of blocks 30 distributed in a circular array are provided on the inner wall of the insulation tank 24, and the piston 31 slides and fits the inner wall of the insulation tank 24. The piston 31 is located at the lower end of the block 30, and the block 30 is located at the lower end of the first side opening 29.

[0048] By setting the cooperation of the stopper 30, the pull rod 23 and the spring 26, the upper and lower limit heights of the pull rod 23 are limited to avoid falling off. The lifting and lowering of the piston 31 is used to adjust the storage volume of the insulation tank 24. When the piston 31 descends, the storage cavity increases to collect the temperature-adjusted beverage. When the piston 31 rises, the storage cavity decreases, and the temperature-adjusted beverage flows back into the temperature-adjusting tank 9 for mixing, thereby improving the initial temperature adjustment efficiency.

[0049] The transmission assembly includes a fixed pulley 21 and a traction rope 22. The fixed pulley 21 is fixedly mounted on the top beam 19. The traction rope 22 is smoothly wound and extended along the fixed pulley 21. The ends of the cross beam 15 and the ends of the pull rod 23 are both provided with hanging rings 34. The two ends of the traction rope 22 are respectively connected to the cross beam 15 and the pull rod 23 by being fixed with the hanging rings 34.

[0050] The pull rod 23 is connected to the cross beam 15 by providing a traction rope 22, so that the cross beam 15 drives the pull rod 23 to move integrally.

[0051] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A device for preparing high-protein or high-fat beverages, comprising a base (1) and a top beam (19) for placing the preparation equipment, a barrel (2) for storing liquid beverages being provided on the base (1), a second control valve (14) for controlling the discharge of the liquid being provided on one side of the lower end of the barrel (2), and characterized in that: A temperature regulating assembly for temperature regulation is provided between the barrel (2) and the second control valve (14), the temperature regulating assembly comprising a temperature regulating tank (9) for temperature regulation and a heat preservation tank (24) for temporary heat preservation, the upper end of the temperature regulating tank (9) is provided with a crossbeam (15) driven to rise and fall by a lifting assembly, the crossbeam (15) is provided with an output rotating rod (18) driven by a motor (17), the lower end of the output rotating rod (18) is provided with a shaft extending to the temperature regulating tank ( 9) a heat conducting pipe (25) in the inner cavity, a heat conducting rod (12) matched with the heat conducting pipe (25) is provided in the temperature regulating tank (9), a spiral heat conducting sheet (33) is provided on the outer wall of the heat conducting pipe (25), and the spiral heat conducting sheet (33) is in contact with the inner wall of the temperature regulating tank (9), and a heat preservation tank (24) is provided on the other side of the temperature regulating tank (9), a discharging assembly is provided in the heat preservation tank (24), and a transmission assembly for controlling the discharging of the discharging assembly is provided on the crossbeam (15).

2. The device for preparing high-protein or high-fat drinks according to claim 1, characterized in that: The base (1) is arranged in a stepped shape, and a limiting seat (3) for stably placing the barrel (2) is provided at the upper end of the base (1). An end cover (4) is provided at the upper end of the barrel (2), and an air valve for adjusting the internal pressure of the barrel (2) is provided on the end cover (4).

3. The device for preparing high-protein or high-fat drinks according to claim 1, characterized in that: A discharge pipe (5) is provided on one side of the barrel (2), and the discharge pipe (5) is connected to the upper end of the temperature regulating tank (9) through a uniform distribution component. A discharge pipe (13) is provided at the lower end of the temperature regulating tank (9), and the second control valve (14) is provided at the end of the discharge pipe (13). A first side port (29) and a second side port (35) are provided at the upper end of the temperature regulating tank (9), and the second side port (35) is connected to the uniform distribution component, and the first side port (29) is connected to the heat preservation tank (24), and the first side port (29) is located at the upper end of the second side port (35).

4. The device for preparing high-protein or high-fat drinks according to claim 3, characterized in that: The uniform distribution component includes a conical uniform distribution box (8), one end port of the uniform distribution box (8) is connected to the discharge pipe (5) through the first control valve (6), the middle section of the uniform distribution box (8) is extended in a fan shape, a plurality of groups of spaced partitions (38) are provided in the inner cavity of the uniform distribution box (8), a diversion groove (37) is provided between adjacent partitions (38), the ends of the plurality of groups of flow grooves (37) are all connected to the first side port (29), the first control valve (6) is provided with a spring valve stem (7) that is elastically installed to control the opening and closing of the valve, and the lower end of the crossbeam (15) is provided with a pressure rod (16) that cooperates with the spring valve stem (7) for extrusion.

5. The device for preparing high-protein or high-fat drinks according to claim 1, characterized in that: A temperature regulating plate (10) is provided in the temperature regulating tank (9), and the temperature regulating plate (10) is fixed on the inner wall of the temperature regulating tank (9). A heat conducting rod (12) is provided vertically upward in the middle of the upper end of the temperature regulating plate (10). A plurality of groups of through-type through grooves (11) distributed in a circumferential array are provided on the outer side of the temperature regulating plate (10). An elastic switch (39) is provided at the upper end of the heat conducting rod (12). A socket (32) for plugging with the heat conducting rod (12) is provided on the heat conducting pipe (25), and the inner wall of the upper end of the socket (32) is pressed onto the elastic switch (39).

6. The device for preparing high-protein or high-fat drinks according to claim 1, characterized in that: The lifting assembly comprises a lifting rod (20) fixed on a top beam (19), an upper end of the lifting rod (20) is fixed on the top beam (19), a telescopic end of the lifting rod (20) is fixedly connected to an upper end of a cross beam (15), and the motor (17) is fixed on the cross beam (15).

7. The device for preparing high-protein or high-fat drinks according to claim 6, characterized in that: The discharging assembly includes a piston (31) and a pull rod (23), the upper end of the insulation tank (24) is provided with an upper frame (27), the middle of the upper end of the upper frame (27) is provided with a through hole (36), the middle section of the pull rod (23) slides through the through hole (36), the lower end of the pull rod (23) extends into the inner cavity of the insulation tank (24), and the lower end of the pull rod (23) is connected to the piston (31) that fits the inner wall of the insulation tank (24), and the upper end of the pull rod (23) is connected to the cross beam (15).

8. The device for preparing high-protein or high-fat drinks according to claim 7, characterized in that: An intermediate ring (28) is fixedly mounted on the outer wall of the middle section of the pull rod (23), a spring (26) is sleeved on the pull rod (23), the intermediate ring (28) is located at the lower end of the upper end horizontal plate of the upper frame (27), and the upper and lower ends of the spring (26) are respectively pressed on the intermediate ring (28) and the upper frame (27).

9. The device for preparing high-protein or high-fat drinks according to claim 7, characterized in that: A plurality of groups of stoppers (30) distributed in a circumferential array are provided on the inner wall of the heat-insulating tank (24); the piston (31) slides and fits the inner wall of the heat-insulating tank (24); the piston (31) is located at the lower end of the stoppers (30); and the stoppers (30) are located at the lower end of the first side opening (29).

10. The device for preparing high-protein or high-fat drinks according to claim 8, characterized in that: The transmission assembly includes a fixed pulley (21) and a traction rope (22), wherein the fixed pulley (21) is fixedly mounted on the top beam (19), and the traction rope (22) is smoothly wound and extended along the fixed pulley (21), and the end of the cross beam (15) and the end of the pull rod (23) are both provided with hanging rings (34), and the two ends of the traction rope (22) are respectively fixedly connected to the cross beam (15) and the pull rod (23) by the hanging rings (34).

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