Starch food cooking device

Abstract

The invention discloses a starch food cooking device, and belongs to the technical field of food cooking, the starch food cooking device comprises an anti-toppling metal box, a first bearing protection metal plate is arranged above the anti-toppling metal box, and a second bearing protection metal plate is arranged above the first bearing protection metal plate; a plurality of second bearing protection metal plates for supporting and fixing the first bearing protection metal plate are arranged at the two ends of the anti-toppling metal box, and a plurality of cooking mechanisms are arranged on the lower surface of the first bearing protection metal plate at intervals; a heating mechanism for heating the cooking mechanism is arranged at the bottom of the anti-toppling metal box; according to the cooking device, through mutual cooperation of multiple structures, a user can adjust the working state of the cooking device, so that the cooking device can better meet the processing requirements of different parts of food, and the applicability of the cooking device is improved; according to the invention, a large amount of high-temperature steam drifting away in the process of taking out food can be prevented from hurting the hands of a worker.

Description

Technical Field

[0001] The invention belongs to the technical field of food steaming and cooking, and particularly relates to a starch food steaming and cooking device. Background Art

[0002] Starch is a high-molecular carbohydrate, a polysaccharide composed of glucose molecules. Glucose molecules are dehydrated and connected together via glycosidic bonds to form a covalent polymer, which is a starch molecule. Starch is divided into two types: amylose and amylopectin. When starchy foods are steamed, a corresponding steaming device is used. The traditional steaming device includes a pot body, a pot lid, a handle, a plastic tube, and a steaming plate. The advantage of this steaming device is that it can steam and process starchy foods.

[0003] When users process starchy foods, sometimes they need to process small amounts of food, and sometimes they need to process large quantities of food. However, when using traditional steaming and cooking devices, users are unable to adjust the working state of the steaming and cooking devices to make them better suitable for the current food processing scenario, which makes the steaming and cooking devices less applicable and urgently needs improvement. Summary of the Invention

[0004] The object of the present invention is to provide a starch food cooking device to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a starch food steaming device, comprising an anti-dumping metal box, a first load-bearing protective metal plate is arranged above the anti-dumping metal box, a plurality of second load-bearing protective metal plates for supporting and fixing the first load-bearing protective metal plate are arranged at both ends of the anti-dumping metal box, a plurality of steaming mechanisms are arranged at intervals on the lower surface of the first load-bearing protective metal plate, a heating mechanism for heating the steaming mechanism is arranged at the bottom of the anti-dumping metal box, the heating mechanism comprises a third load-bearing protective metal plate, a plurality of fourth load-bearing protective metal plates corresponding to the steaming mechanism are arranged at intervals on the upper surface of the third load-bearing protective metal plate, and a plurality of electric heating metal parts for heating are arranged at intervals on the upper surface of the fourth load-bearing protective metal plate.

[0006] As a further solution of the present invention: the cooking mechanism includes a material storage metal tube, a plurality of cooking net boxes are arranged inside the material storage metal tube, a deformable cooker for supporting and adjusting the height of the cooking net boxes is arranged inside the material storage metal tube, a plurality of fifth load-bearing protective metal plates are arranged at both ends of the material storage metal tube, and a second deformable position changing part for cooperating with the first load-bearing protective metal plate to adjust the height of the material storage metal tube is provided at one end of the fifth load-bearing protective metal plate.

[0007] As a further solution of the present invention: the other end of the fifth load-bearing protective metal plate is provided with a first deformable position changing part, and one side of the first deformable position changing part is provided with a third deformable position changing part for adjusting the height of the deformable steamer. The third deformable position changing part is fixedly connected to the deformable steamer, and the top of the first deformable position changing part is fixedly connected with a limiting transmission metal part for adjusting the height of the third deformable position changing part.

[0008] As a further solution of the present invention: one end of the limiting transmission metal part is fixedly connected to the third deformable position changing part, and the other end of the limiting transmission metal part is fixedly connected to the first deformable position changing part. A detachable cover plate is detachably connected to the top of the cooking cage for sealing the top open end of the storage metal tube.

[0009] As a further solution of the present invention: a deformable sealing gasket is provided under the cooking cage for sealing the bottom open end of the material storage metal tube, the deformable sealing gasket is fixedly connected to the material storage metal tube, the first deformable position changing part is fixedly connected to the fifth load-bearing protective metal plate, and the second deformable position changing part is fixedly connected to the fifth load-bearing protective metal plate.

[0010] As a further solution of the present invention: the deformable cooker includes a sixth load-bearing protective metal plate, the upper surface of the sixth load-bearing protective metal plate is provided with a plurality of limit braking grooves corresponding to the cooking mesh box, and a plurality of feed metal pipes for feeding materials are provided at both ends of the sixth load-bearing protective metal plate. The feed metal pipes are provided through the sixth load-bearing protective metal plate, and the feed metal pipes are fixedly connected to the sixth load-bearing protective metal plate.

[0011] As a further solution of the present invention: a number of limit transmission rods slidably connected to the feeding metal pipe are provided at both ends of the sixth load-bearing protective metal plate, and a first limit sealing disk for sealing the top open end of the feeding metal pipe is provided above the limit transmission rod, and a conical sealing rod corresponding to the first limit sealing disk is provided on the limit transmission rod, and the conical sealing rod is slidably connected to the feeding metal pipe.

[0012] As a further solution of the present invention: one end of the conical sealing rod is fixedly connected to the limit transmission rod, and the other end of the conical sealing rod is fixedly connected to the first limit sealing disk. The bottom of the limit transmission rod is provided with a second limit sealing disk for sealing the bottom open end of the feeding metal pipe, and the second limit sealing disk is fixedly connected to the limit transmission rod.

[0013] Compared with the prior art, the beneficial effects of the present invention are: the present invention has a simple structure and is easy to use. During use, through the mutual cooperation of multiple structures, the user can adjust the working state of the steaming device, so that the steaming device can be better adapted to the processing requirements of different amounts of food and different types of food, thereby improving the applicability of the steaming device. Secondly, the present invention can avoid the large amount of high-temperature steam emitted during the process of taking out food, which may cause damage to the hands of the staff, thereby making the use of the steaming device safer. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the structure of a starch food cooking device;

[0015] Figure 2 This is a schematic diagram of the structure of a heating mechanism in a starch food cooking device;

[0016] Figure 3 This is a schematic structural diagram of a cooking mechanism in a starch food cooking device;

[0017] Figure 4 This is an exploded diagram of the structure of a cooking mechanism in a starch food cooking device;

[0018] Figure 5 This is a schematic structural diagram of a deformable steamer in a starch food steaming device;

[0019] Figure 6 This is a schematic structural diagram of a limit transmission rod in a starch food cooking device;

[0020] In the figure: 1-anti-dumping metal box, 2-heating mechanism, 3-cooking mechanism, 4-first load-bearing protective metal plate, 5-second load-bearing protective metal plate, 21-third load-bearing protective metal plate, 22-electric heating metal part, 23-fourth load-bearing protective metal plate, 30-first deformable position changing part, 31-fifth load-bearing protective metal plate, 32-second deformable position changing part, 33-deformable steamer, 34-cooking net box, 35-removable cover, 36-limiting transmission metal part, 37-third deformable position changing part, 38-material storage metal pipe, 39-deformable sealing gasket, 330-limiting transmission rod, 331-material feeding metal pipe, 332-sixth load-bearing protective metal plate, 333-limiting braking groove, 334-first limit blocking disk, 335-conical blocking rod, 336-second limit blocking disk. DETAILED DESCRIPTION

[0021] 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.

[0022] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected" and "set" should be understood in a broad sense. For example, it can be fixedly connected or set, or detachably connected or set, or integrally connected or set.

[0023] For those skilled in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0024] See also Figures 1-6 This embodiment provides a starch food steaming device, including an anti-dumping metal box 1, a first load-bearing protective metal plate 4 is arranged above the anti-dumping metal box 1, and a plurality of second load-bearing protective metal plates 5 are arranged at both ends of the anti-dumping metal box 1 for supporting and fixing the first load-bearing protective metal plate 4, a plurality of steaming mechanisms 3 are arranged at intervals on the lower surface of the first load-bearing protective metal plate 4, and a heating mechanism 2 is arranged at the bottom of the anti-dumping metal box 1 for heating the steaming mechanism 3.

[0025] See also Figure 1 and Figure 2 In one embodiment, in order to make the use of the heating mechanism 2 more reliable, in this embodiment, preferably, the heating mechanism 2 includes a third load-bearing protective metal plate 21, and the upper surface of the third load-bearing protective metal plate 21 is spaced apart with a plurality of fourth load-bearing protective metal plates 23 corresponding to the steaming mechanism 3, and the upper surface of the fourth load-bearing protective metal plate 23 is spaced apart with a plurality of electric heating metal parts 22 for heating, and the electric heating metal parts 22 are electric heating plates.

[0026] In another embodiment, the heating mechanism 2 includes a third load-bearing protective metal plate 21, and a plurality of fourth load-bearing protective metal plates 23 corresponding to the cooking mechanism 3 are arranged at intervals on the upper surface of the third load-bearing protective metal plate 21. A plurality of electric heating metal parts 22 for heating are arranged at intervals on the upper surface of the fourth load-bearing protective metal plate 23, and the electric heating metal parts 22 are electric heating rods.

[0027] See also Figure 1 、 Figure 2-Figure 6In one embodiment, in order to make the use of the cooking mechanism 3 more reliable, in this embodiment, preferably, the cooking mechanism 3 includes a material storage metal tube 38, a plurality of cooking net boxes 34 are arranged inside the material storage metal tube 38, and the cooking net boxes 34 are made of stainless steel. A deformable cooking device 33 is provided inside the material storage metal tube 38 for supporting and adjusting the height of the cooking net boxes 34, and a plurality of fifth load-bearing protective metal plates 31 are provided at both ends of the material storage metal tube 38. One end of the fifth load-bearing protective metal plate 31 is provided with a second deformable position changing member 32 for cooperating with the first load-bearing protective metal plate 4 to adjust the height of the material storage metal tube 38. The second deformable position-changing member 32 is an electrically-operated telescopic rod. The other end of the fifth load-bearing protective metal plate 31 is provided with a first deformable position-changing member 30, which is an electrically-operated telescopic rod. A third deformable position-changing member 37 for adjusting the height of the deformable steamer 33 is provided on one side of the first deformable position-changing member 30. The third deformable position-changing member 37 is an electrically-operated telescopic rod and is fixedly connected to the deformable steamer 33. A limit transmission metal member 36 for adjusting the height of the third deformable position-changing member 37 is fixedly connected to the top of the first deformable position-changing member 30.

[0028] See also Figure 3-Figure 6 In one embodiment, in order to enrich the functions of the cooking mechanism 3, in this embodiment, preferably, one end of the limiting transmission metal member 36 is fixedly connected to the third deformable position changing member 37, and the other end of the limiting transmission metal member 36 is fixedly connected to the first deformable position changing member 30. A detachable cover plate 35 for sealing the top open end of the material storage metal tube 38 is detachably connected to the top of the cooking net box 34. A deformable sealing gasket 39 for sealing the bottom open end of the material storage metal tube 38 is provided below the cooking net box 34. The deformable sealing gasket 39 is a silicone gasket, and the deformable sealing gasket 39 is fixedly connected to the material storage metal tube 38. The first deformable position changing member 30 is fixedly connected to the fifth load-bearing protective metal plate 31, and the second deformable position changing member 32 is fixedly connected to the fifth load-bearing protective metal plate 31.

[0029] See also Figure 3-Figure 6In one embodiment, in order to make the use of the deformable steamer 33 more reliable, in this embodiment, preferably, the deformable steamer 33 includes a sixth load-bearing protective metal plate 332, the upper surface of the sixth load-bearing protective metal plate 332 is provided with a plurality of limit brake grooves 333 corresponding to the steaming cage 34, and a plurality of feed metal pipes 331 for feeding are provided at both ends of the sixth load-bearing protective metal plate 332. The feed metal pipes 331 penetrate the sixth load-bearing protective metal plate 332. The tube 331 is fixedly connected to the sixth load-bearing protective metal plate 332. Both ends of the sixth load-bearing protective metal plate 332 are provided with a plurality of limit transmission rods 330 that are slidably connected to the material feeding metal tube 331. A first limit blocking disk 334 is provided above the limit transmission rod 330 for blocking the top open end of the material feeding metal tube 331. A conical blocking rod 335 corresponding to the first limit blocking disk 334 is provided on the limit transmission rod 330. The conical blocking rod 335 is slidably connected to the material feeding metal tube 331.

[0030] See also Figure 5 and Figure 6 In one embodiment, in order to make the functions of the deformable steamer 33 more abundant, in this embodiment, preferably, one end of the conical sealing rod 335 is fixedly connected to the limit transmission rod 330, and the other end of the conical sealing rod 335 is fixedly connected to the first limit sealing disk 334. The bottom of the limit transmission rod 330 is provided with a second limit sealing disk 336 for sealing the bottom open end of the feeding metal tube 331. The second limit sealing disk 336 is fixedly connected to the limit transmission rod 330, and the limit transmission rod 330 is a stainless steel rod.

[0031] In another embodiment, the cooking mechanism 3 includes a material storage metal tube 38, a plurality of cooking net boxes 34 are arranged inside the material storage metal tube 38, the material of the cooking net boxes 34 is a ceramic box, a deformable cooking device 33 is arranged inside the material storage metal tube 38 for supporting and adjusting the height of the cooking net boxes 34, a plurality of fifth load-bearing protective metal plates 31 are arranged at both ends of the material storage metal tube 38, and a second deformable position changing member 32 is provided at one end of the fifth load-bearing protective metal plate 31 for cooperating with the first load-bearing protective metal plate 4 to adjust the height of the material storage metal tube 38. Reference numeral 32 denotes a hydraulic cylinder. A first deformable position-changing member 30 is provided at the other end of the fifth load-bearing protective metal plate 31. The first deformable position-changing member 30 is a hydraulic cylinder. A third deformable position-changing member 37 for adjusting the height of the deformable steamer 33 is provided on one side of the first deformable position-changing member 30. The third deformable position-changing member 37 is a hydraulic cylinder and is fixedly connected to the deformable steamer 33. A limit transmission metal member 36 for adjusting the height of the third deformable position-changing member 37 is fixedly connected to the top of the first deformable position-changing member 30.

[0032] In another embodiment, in order to enrich the functions of the cooking mechanism 3, in this embodiment, preferably, one end of the limiting transmission metal part 36 is fixedly connected to the third deformable position changing part 37, and the other end of the limiting transmission metal part 36 is fixedly connected to the first deformable position changing part 30. A detachable cover plate 35 for sealing the top open end of the material storage metal tube 38 is detachably connected to the top of the cooking net box 34, and a deformable sealing gasket 39 for sealing the bottom open end of the material storage metal tube 38 is provided below the cooking net box 34. The deformable sealing gasket 39 is a rubber gasket, and the deformable sealing gasket 39 is fixedly connected to the material storage metal tube 38. The first deformable position changing part 30 is fixedly connected to the fifth load-bearing protective metal plate 31, and the second deformable position changing part 32 is fixedly connected to the fifth load-bearing protective metal plate 31.

[0033] In another embodiment, in order to make the use of the deformable steamer 33 more reliable, in this embodiment, preferably, the deformable steamer 33 includes a sixth load-bearing protective metal plate 332, and the upper surface of the sixth load-bearing protective metal plate 332 is provided with a plurality of limit braking grooves 333 corresponding to the cooking net box 34, and a plurality of feeding metal pipes 331 for feeding are provided at both ends of the sixth load-bearing protective metal plate 332. The feeding metal pipes 331 are provided through the sixth load-bearing protective metal plate 332, and the feeding metal pipes 331 are fixedly connected to the sixth load-bearing protective metal plate 332. A plurality of limit transmission rods 330 slidably connected to the feeding metal pipes 331 are provided at both ends of the sixth load-bearing protective metal plate 332. The rod 330 is a ceramic plate, and a first limiting sealing disk 334 for sealing the top open end of the feeding metal tube 331 is provided above the limiting transmission rod 330. A conical sealing rod 335 corresponding to the first limiting sealing disk 334 is provided on the limiting transmission rod 330. The conical sealing rod 335 is slidingly connected to the feeding metal tube 331, and one end of the conical sealing rod 335 is fixedly connected to the limiting transmission rod 330, and the other end of the conical sealing rod 335 is fixedly connected to the first limiting sealing disk 334. A second limiting sealing disk 336 for sealing the bottom open end of the feeding metal tube 331 is provided at the bottom of the limiting transmission rod 330, and the second limiting sealing disk 336 is fixedly connected to the limiting transmission rod 330.

[0034] The working principle and use process of the present invention are as follows: when the user needs to process starchy food (hereinafter referred to as material), an appropriate number of steaming and boiling mechanisms 3 are selected to work according to the amount of material or the type of material that needs to be processed separately (for example, when the processing amount is large, all the steaming and boiling mechanisms 3 are controlled to be in a working state; when the processing amount is small, one of the steaming and boiling mechanisms 3 is controlled to be in a working state; for example, when four materials that cannot be processed at the same time need to be processed, four steaming and boiling mechanisms 3 are controlled to be in a working state to realize the simultaneous processing of the four materials (in the prior art, the four foods need to be processed one by one in sequence, and the processing efficiency is extremely low)). When it is necessary to control the steaming and boiling mechanisms 3 to work, the steaming and boiling mechanisms 3 are controlled to be in a working state. The second deformable position-changing member 32 extends to move the material storage metal tube 38 downward and against the third load-bearing protective metal plate 21, thereby cooperating with the deformable sealing gasket 39 to seal the bottom open end of the material storage metal tube 38. Then, an appropriate amount of water is injected into the bottom of the material storage metal tube 38. If the material needs to be steamed, the steaming net box 34 is controlled to be above the liquid surface. When the material needs to be boiled, the third deformable position-changing member 37 is controlled to extend to immerse the steaming net box 34 in water. Then, the electric heating metal member 22 located in the material storage metal tube 38 is turned on, and the other electric heating metal members 22 are in a non-working state to save electricity, so that the water is heated by the electric heating metal members 22 to achieve material processing.

[0035] When the processed food needs to be taken out, the first deformable position-changing member 30 is controlled to extend to move the cooking net box 34 upward. At the same time, the height of the sixth load-bearing protective metal plate 332 is increased. At this time, the first limit blocking disk 334 blocks the feeding metal pipe 331 under the action of gravity, thereby preventing a large amount of high-temperature steam from being discharged through the feeding metal pipe 331, thereby preventing a large amount of discharged high-temperature steam from causing harm to the health of the workers. During the normal cooking process of the material, water or steam can normally pass through the feeding metal pipe 331 to process the material. Therefore, by reasonably selecting the number of the cooking mechanisms 3 and controlling the working state of each cooking mechanism 3, the device can meet the diverse processing needs of the user.

[0036] Therefore, through the mutual cooperation of multiple structures, the user can adjust the working state of the steaming and cooking device, so that the steaming and cooking device can be better adapted to the processing needs of different amounts of food and different types of food, thereby improving the applicability of the steaming and cooking device. In addition, the steaming or boiling state can be switched at any time during the processing process, so that the device can better process the food. Secondly, the present invention can avoid the large amount of high-temperature steam that is emitted during the process of taking out the food, causing harm to the hands of the staff, making the use of the steaming and cooking device safer. In addition, the present invention has a simple structure and is easy to use, and is worthy of promotion and use.

[0037] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the invention can be embodied in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be included therein. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

[0038] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. A starch food cooking device, comprising an anti-dumping metal box (1), characterized in that: A first load-bearing protective metal plate (4) is provided above the anti-dumping metal box (1), and a plurality of second load-bearing protective metal plates (5) for supporting and fixing the first load-bearing protective metal plate (4) are provided at both ends of the anti-dumping metal box (1). A plurality of steaming mechanisms (3) are provided at intervals on the lower surface of the first load-bearing protective metal plate (4). A heating mechanism (2) for heating the steaming mechanism (3) is provided at the bottom of the anti-dumping metal box (1), and the heating mechanism (2) includes a third load-bearing protective metal plate (21). A plurality of fourth load-bearing protective metal plates (23) corresponding to the steaming mechanism (3) are provided at intervals on the upper surface of the third load-bearing protective metal plate (21). The upper surface of the protective metal plate (23) is provided with a plurality of electric heating metal parts (22) for heating, the cooking mechanism (3) includes a material storage metal tube (38), a plurality of cooking net boxes (34) are provided inside the material storage metal tube (38), a deformable cooking device (33) for supporting and adjusting the height of the cooking net boxes (34) is provided inside the material storage metal tube (38), a plurality of fifth bearing protective metal plates (31) are provided at both ends of the material storage metal tube (38), and a second deformable position changing part (32) for cooperating with the first bearing protective metal plate (4) to adjust the height of the material storage metal tube (38) is provided at one end of the fifth bearing protective metal plate (31).

2. The starch food cooking device according to claim 1, characterized in that: The other end of the fifth load-bearing protective metal plate (31) is provided with a first deformable position changing member (30), and one side of the first deformable position changing member (30) is provided with a third deformable position changing member (37) for adjusting the height of the deformable steamer (33). The third deformable position changing member (37) is fixedly connected to the deformable steamer (33), and the top of the first deformable position changing member (30) is fixedly connected with a limiting transmission metal member (36) for adjusting the height of the third deformable position changing member (37).

3. The starch food cooking device according to claim 2, characterized in that: One end of the position-limiting transmission metal part (36) is fixedly connected to the third deformable position-changing part (37), and the other end of the position-limiting transmission metal part (36) is fixedly connected to the first deformable position-changing part (30). A detachable cover plate (35) for sealing the top open end of the material storage metal tube (38) is detachably connected above the cooking cage (34).

4. The starch food cooking device according to claim 3, characterized in that: A deformable sealing gasket (39) is provided below the cooking cage (34) for sealing the bottom open end of the material storage metal tube (38). The deformable sealing gasket (39) is fixedly connected to the material storage metal tube (38). The first deformable position changing member (30) is fixedly connected to the fifth load-bearing protective metal plate (31). The second deformable position changing member (32) is fixedly connected to the fifth load-bearing protective metal plate (31).

5. The starch food cooking device according to claim 4, characterized in that: The deformable steamer (33) includes a sixth load-bearing protective metal plate (332), the upper surface of which is provided with a plurality of limit braking grooves (333) corresponding to the steaming net box (34), and a plurality of feeding metal pipes (331) for feeding materials are provided at both ends of the sixth load-bearing protective metal plate (332), the feeding metal pipes (331) being provided through the sixth load-bearing protective metal plate (332), and the feeding metal pipes (331) are fixedly connected to the sixth load-bearing protective metal plate (332).

6. The starch food steaming device according to claim 5, characterized in that: A plurality of limit transmission rods (330) slidably connected to the material feeding metal tube (331) are provided at both ends of the sixth load-bearing protective metal plate (332); a first limit blocking disk (334) for blocking the top open end of the material feeding metal tube (331) is provided above the limit transmission rod (330); a conical blocking rod (335) corresponding to the first limit blocking disk (334) is provided on the limit transmission rod (330); and the conical blocking rod (335) is slidably connected to the material feeding metal tube (331).

7. The starch food steaming device according to claim 6, characterized in that: One end of the conical blocking rod (335) is fixedly connected to the limit transmission rod (330), and the other end of the conical blocking rod (335) is fixedly connected to the first limit blocking disk (334). A second limit blocking disk (336) for blocking the bottom open end of the feeding metal pipe (331) is provided at the bottom of the limit transmission rod (330). The second limit blocking disk (336) is fixedly connected to the limit transmission rod (330).

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