Quick forming device convenient to clean and used for moon cake processing

Abstract

The utility model discloses a quick forming device convenient to clean for mooncake processing, which relates to the technical field of forming devices for mooncake processing and comprises a bottom plate, and a transmission mounting component is fixedly connected to the upper end of the bottom plate. According to the mooncake forming device, through mutual cooperation of the second electric hydraulic rod, the annular plate and the wing-shaped nut, the forming mold can be driven to move downwards after mooncakes are processed and formed, and then the mooncakes can be ejected out of the forming mold under the action of the arranged top plate; through mutual cooperation of a motor, a rotating rod, a first bevel gear, a second bevel gear, a first threaded rod and a T-shaped plate, two first clamping blocks can be driven to move out of two corresponding first clamping grooves, and therefore the mooncakes can be taken out more conveniently; and at the moment, the two first clamping blocks do not limit the square block, so that the top plate can be conveniently taken down from the device, and the device can be conveniently cleaned.

Description

Technical Field

[0001] The utility model relates to a rapid prototyping device for processing moon cakes, in particular to a rapid prototyping device for processing moon cakes which is convenient to clean. Background Art

[0002] Mooncake is one of the time-honored traditional snacks of the Han nationality and a festive food custom of the Mid-Autumn Festival. There are many varieties of mooncakes. The most traditional ones include Cantonese-style mooncakes, Beijing-style mooncakes, Su-style mooncakes and Chaozhou-style mooncakes. Now there are also French mooncakes, snow skin mooncakes, ice cream mooncakes, etc. A mooncake forming device is often used during the processing of mooncakes.

[0003] At present, there are still some defects and shortcomings in the use of rapid prototyping devices for mooncake processing. The specific areas that need to be improved are as follows:

[0004] The existing rapid prototyping device for mooncake processing is inconvenient to disassemble during use, which results in a cumbersome process for operators to clean the device after use, increasing the workload of the operators. Utility Model Content

[0005] The purpose of the utility model is to provide a rapid prototyping device for processing mooncakes that is easy to clean, so as to solve the problem that the existing rapid prototyping device for processing mooncakes proposed in the above background technology is inconvenient to disassemble during use, which leads to cumbersome cleaning process for operators after use, thereby increasing the workload of operators.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a quick prototyping device for processing moon cakes that is convenient to clean, comprising a bottom plate, a transmission mounting assembly fixedly connected to the upper end of the bottom plate, the upper side of the transmission mounting assembly is clamped with a square block one with a clamping groove one provided inside both left and right ends, the upper end of the square block one is fixedly connected to the lower end of the top plate, the outer side of the top plate is sleeved with the inner side of the forming mold, the forming mold is threadedly connected with an annular plate with four threaded holes provided inside through four wing nuts provided thereon, the upper end of the transmission mounting assembly is movably connected to the upper surface of the fixing frame, the upper side of the transmission mounting assembly is movably connected to the left side of the fixing assembly, the lower side of the fixing assembly is clamped with a square block two with a clamping groove two provided inside both left and right ends, the square block two is sleeved with the lower side of the fixing assembly through the limiting holes provided inside it, the lower end of the square block two is fixedly connected to the upper end of the pressing plate, and the upper side of the fixing assembly is fixedly connected with four electric hydraulic rods one.

[0007] As a preferred technical solution of the utility model, the lower end of the fixed frame is fixedly connected to the upper end of the base plate, the upper ends of the four electric hydraulic rods 1 are fixedly connected to the inner upper surface of the fixed frame, the lower end of the annular plate is fixedly connected to four electric hydraulic rods 2, and the lower ends of the four electric hydraulic rods 2 are fixedly connected to the upper end of the base plate.

[0008] As a preferred technical solution of the utility model, the transmission mounting assembly includes a motor, the lower end of the motor is fixedly connected to the upper end of the base plate, the motor is fixedly connected to the lower end of the rotating rod through an output shaft arranged thereon, and the rotating rod is movably connected to the left side of the fixed assembly through two guide sliders arranged thereon.

[0009] As a preferred technical solution of the utility model, the upper end of the rotating rod is movably connected to the upper surface of the inner part of the fixed frame, the lower side of the rotating rod is fixedly connected with bevel gear 1, the bevel gear 1 is meshed with bevel gear 2 for transmission, the bevel gear 2 is fixedly connected to the left end of threaded rod 1, and the middle bare rod position of the threaded rod 1 is movably connected to a support base with a connecting hole opened inside.

[0010] As a preferred technical solution of the utility model, the lower end of the support base is fixedly connected to the upper end of the base plate, the support base is clamped with a square block through a square groove opened inside the upper end thereof, the threaded rod 1 is threadedly connected to two T-shaped plates with threaded holes opened inside the lower ends, and the relatively close ends of the two T-shaped plates are fixedly connected with a clamping block 1.

[0011] As a preferred technical solution of the utility model, the relatively close ends of the two clamping blocks respectively pass through the left and right ends of the square groove and are clamped with the square block with clamping grooves opened inside the left and right ends. The two T-shaped plates are movably connected to the four T-shaped rods through the two circular holes opened inside the lower sides thereof. The four T-shaped rods are grouped in pairs and their relatively close ends are fixedly connected to the left and right ends of the support base respectively.

[0012] As a preferred technical solution of the utility model, the fixing component includes a sleeve, and the sleeve is movably connected to a rotating rod with two guide slide blocks provided thereon through two guide grooves opened therein, and a bevel gear three is fixedly connected to the lower side of the sleeve, and the bevel gear three is meshed with a bevel gear four for transmission, and the bevel gear four is fixedly connected to the left end of the threaded rod two, and the threaded rod two is threadedly connected to two vertical plates each of which has a threaded hole opened therein.

[0013] As a preferred technical solution of the utility model, the lower sides of the two vertical plates respectively pass through the two movable through grooves opened inside the upper end of the concave plate and are respectively fixedly connected to the two clamping blocks 2, and the two clamping blocks 2 are clamped with the square block 2 with two clamping grooves 2 opened inside. The two vertical plates are respectively movably connected to the two fixing rods through the two circular holes opened inside the upper ends of the two fixing rods, and the left and right ends of the two fixing rods are respectively fixedly connected to the relatively close ends of the two fixing plates, and the lower ends of the two fixing plates are fixedly connected to the upper end of the concave plate.

[0014] As a preferred technical solution of the utility model, the upper end of the concave plate is fixedly connected to the lower end of one of the four electric hydraulic rods, the inner upper surface of the concave plate is fixedly connected to a limiting rod, the limiting rod is sleeved with a square block with a limiting hole inside, the upper end of the fixed plate on the left is fixedly connected to an L-shaped plate, and the L-shaped plate is movably connected to the sleeve through a connecting hole opened inside its left end.

[0015] Compared with the prior art, the beneficial effects of the utility model are:

[0016] The utility model can drive the forming mold to move downward after the moon cake is processed and formed through the mutual cooperation between the arranged electric hydraulic rod 2, the annular plate and the wing-shaped nut, and then the moon cake can be ejected from the inside of the forming mold under the action of the arranged top plate, so that the device makes the removal process of the moon cake after forming more convenient, and the mutual cooperation between the arranged motor, the rotating rod, the bevel gear 1, the bevel gear 2, the threaded rod 1 and the T-shaped plate can drive the two clamping blocks 1 to be respectively moved out from the inside of the corresponding two clamping grooves 1, at this time, the two clamping blocks 1 are no longer restricted on the opposite square blocks, and then the top plate can be conveniently removed from the device for convenient cleaning, in the process of rotation of the rotating rod, the arranged sleeve, the bevel gear 3, the bevel gear 4, the threaded rod 2 and the vertical plate can drive the two clamping blocks 2 to be respectively moved out from the inside of the two clamping grooves 2, at this time, the pressing plate can be conveniently removed from the device for convenient cleaning, and the arranged wing-shaped nut can be used to remove the forming mold from the device after the use of the device is completed, so that the device can be conveniently disassembled and cleaned after use. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the main cross-sectional three-dimensional structure of the utility model;

[0018] Figure 2 This is a schematic diagram of the main three-dimensional structure of the utility model;

[0019] Figure 3 This is a schematic diagram of the main cross-sectional three-dimensional structure of the square block of the utility model;

[0020] Figure 4 This is a schematic diagram of a main cross-sectional three-dimensional structure of a square block of the utility model;

[0021] Figure 5 This is a schematic diagram of the main cross-sectional three-dimensional structure of the molding die of the utility model;

[0022] Figure 6 This is a schematic diagram of the main cross-sectional three-dimensional structure of the fixing component of the utility model;

[0023] Figure 7 It is a schematic diagram of the main cross-sectional three-dimensional structure of the transmission installation component of the utility model.

[0024] In the figure: 1 bottom plate, 2 fixing frame, 3 transmission installation assembly, 31 motor, 32 rotating rod, 33 bevel gear 2, 34 threaded rod 1, 35 bevel gear 1, 36 T-shaped rod, 37 T-shaped plate, 38 supporting base, 39 clamping block 1, 310 square slot, 4 electric hydraulic rod 2, 5 annular plate, 6 fixing assembly, 61 sleeve, 62 bevel gear 3, 63 bevel gear 4, 64 L-shaped plate, 65 threaded rod 2, 66 concave plate, 67 fixing plate, 68 vertical plate, 69 clamping block 2, 610 limit rod, 611 fixing rod, 7 electric hydraulic rod 1, 8 square block 2, 9 pressure plate, 10 forming mold, 11 top plate, 12 wing nut, 13 square block 1, 14 clamping slot 2, 15 clamping slot 1. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] like Figure 1-7As shown, the utility model provides a technical solution: a quick prototyping device for processing moon cakes that is convenient to clean, comprising a bottom plate 1, a transmission installation assembly 3 is fixedly connected to the upper end of the bottom plate 1, the upper side of the transmission installation assembly 3 is clamped with a square block 13 with a clamping groove 15 provided inside the left and right ends, the upper end of the square block 13 is fixedly connected to the lower end of the top plate 11, the outer side of the top plate 11 is sleeved with the inner side of the forming mold 10, the forming mold 10 is threadedly connected to the annular plate 5 with four threaded holes provided inside through four wing nuts 12 provided thereon, the upper end of the transmission installation assembly 3 is movably connected to the inside of the fixing frame 2 On the upper surface, the upper side of the transmission installation component 3 is movably connected to the left side of the fixed component 6, and the lower side of the fixed component 6 is clamped with the square block 8 with the second card slot 14 provided inside the left and right ends. The square block 8 is sleeved with the lower side of the fixed component 6 through the limiting hole provided inside it, and the lower end of the square block 8 is fixedly connected to the upper end of the pressing plate 9. Through the mutual cooperation between the transmission installation component 3, the card slot 15 and the card block 13, the top plate 11 can be quickly disassembled after the use of the device is ended. At the same time, in the process of disassembling the top plate 11, the fixed component 6, the card slot 14 and the square block are set. Under the action of the two 8, the pressure plate 9 can be disassembled, so that the top plate 11 and the pressure plate 9 can be conveniently cleaned after the use of the device. The wing nut 12 can be conveniently removed from the molding die 10, so as to facilitate its cleaning. The upper side of the fixing assembly 6 is fixedly connected with four electric hydraulic rods 7, the lower end of the fixing frame 2 is fixedly connected to the upper end of the bottom plate 1, and the upper ends of the four electric hydraulic rods 7 are all fixedly connected to the inner upper surface of the fixing frame 2. The lower end of the annular plate 5 is fixedly connected with four electric hydraulic rods 24, and the lower ends of the four electric hydraulic rods 24 are fixedly connected. It is fixedly connected to the upper end of the bottom plate 1, and the pressing plate 9 is driven to move downward by starting the electric hydraulic rod 7 under the action of the set fixing component 6 and the square block 2 8. At this time, with the cooperation of the set top plate 11, the extrusion molding process of the moon cake inside the molding mold 10 can be quickly achieved. After the moon cake is formed, the annular plate 5 is driven downward by starting the electric hydraulic rod 2 4, and then the molding mold 10 can be driven to move downward. At this time, with the cooperation of the set top plate 11, the formed moon cake can be easily ejected from the inside of the molding mold 10, thereby making the moon cake removal process more convenient.

[0027] The transmission installation assembly 3 includes a motor 31, the lower end of the motor 31 is fixedly connected to the upper end of the base plate 1, the motor 31 is fixedly connected to the lower end of the rotating rod 32 through the output shaft arranged thereon, the rotating rod 32 is movably connected to the left side of the fixed assembly 6 through two guide sliders arranged thereon, the upper end of the rotating rod 32 is movably connected to the inner upper surface of the fixed frame 2, the lower side of the rotating rod 32 is fixedly connected with a bevel gear 1 35, the bevel gear 1 35 is meshed with the bevel gear 2 33 for transmission, and the bevel gear 2 33 is meshed with the bevel gear 33 The left end of the threaded rod 34 is fixedly connected, and the middle polished rod position of the threaded rod 34 is movably connected to a support base 38 with a connecting hole provided inside. The lower end of the support base 38 is fixedly connected to the upper end of the bottom plate 1, and the support base 38 is clamped with the square block 13 through a square groove 310 provided inside its upper end. The threaded rod 34 is threadedly connected to T-shaped plates 37 with threaded holes provided inside the two lower ends. The relatively close ends of the two T-shaped plates 37 are fixedly connected with a clamping block 39. The two clamping blocks 39 are fixedly connected to the two T-shaped plates 37. The relatively close ends of 9 pass through the left and right ends of the square groove 310 respectively and are clamped with the square block 13 with a clamping groove 15 opened inside the left and right ends. The two T-shaped plates 37 are movably connected with the four T-shaped rods 36 through the two circular holes opened inside the lower side thereof. The four T-shaped rods 36 are grouped in pairs and their relatively close ends are fixedly connected with the left and right ends of the supporting base 38 respectively. The mutual cooperation between the set square groove 310 and the square block 13 can limit the placement position of the top plate 11. The rotation of the output shaft of the motor 31 can drive the rotating rod 32 to rotate, and then the threaded rod 34 can be driven to rotate under the action of the set bevel gear 1 35 and the bevel gear 2 33. The rotation of the threaded rod 34 can drive the two T-shaped plates 37 to move away from each other under the action of the set T-shaped rod 36, and then the two clamping blocks 39 can be driven to move out from the inside of the two clamping grooves 15 respectively, and the top plate 11 can be conveniently removed from the device.

[0028] The fixing assembly 6 includes a sleeve 61, which is movably connected to a rotating rod 32 with two guide slide blocks provided thereon through two guide slots provided therein, and a bevel gear 3 62 is fixedly connected to the lower side of the sleeve 61, which meshes with a bevel gear 4 63 for transmission, and the bevel gear 4 63 is fixedly connected to the left end of the threaded rod 2 65, and the threaded rod 2 65 is threadedly connected to two vertical plates 68 with threaded holes provided therein, and the lower sides of the two vertical plates 68 respectively pass through two movable through slots provided in the upper end of the concave plate 66 and are separated The two vertical plates 68 are respectively fixedly connected with two clamping blocks 69, and the two clamping blocks 69 are clamped with the square block 8 with two clamping grooves 14 formed inside. The two vertical plates 68 are respectively movably connected with the two fixing rods 611 through the two circular holes formed inside the upper ends thereof. The left and right ends of the two fixing rods 611 are respectively fixedly connected to the relatively close ends of the two fixing plates 67. The lower ends of the two fixing plates 67 are fixedly connected to the upper ends of the concave plates 66. The upper ends of the concave plates 66 are fixedly connected to the lower ends of the four electric hydraulic rods 7. The upper surface of the part is fixedly connected with a limiting rod 610, and the limiting rod 610 is sleeved with the square block 2 8 with a limiting hole provided inside. The upper end of the left fixed plate 67 is fixedly connected with an L-shaped plate 64, and the L-shaped plate 64 is movably connected to the sleeve 61 through the connecting hole provided inside the left end thereof. In the process of driving the two T-shaped plates 37 to move away from each other, the rotation of the rotating rod 32 can drive the sleeve 61 to rotate. The rotation of the sleeve 61 can achieve the effect of driving the threaded rod 2 65 to rotate under the action of the provided bevel gear 3 62 and the bevel gear 4 63. The rotation of the threaded rod 2 65 can drive the two vertical plates 68 to move away from each other under the action of the provided fixing rod 611 and the fixing plate 67, and then the two clamping blocks 2 69 can be moved out of the inside of the two clamping grooves 2 14 respectively. At this time, the pressing plate 9 can be conveniently removed from the device for cleaning. The provided L-shaped plate 64 can support the sleeve 61, and the provided limiting rod 610 can limit the placement position of the square block 2 8.

[0029] The operating steps of the utility model are:

[0030] When the device is used to form moon cakes, first, the lower crust, fillings and upper crust are placed in the molding die 10 in sequence, and then the electric hydraulic rod 17 is started to drive the pressing plate 9 to move downward under the action of the fixed component 6 and the square block 28. At this time, the moon cake inside the molding die 10 can be extruded and formed under the cooperation of the set top plate 11. After the moon cake is formed, the pressing plate 9 is reset, and then the electric hydraulic rod 24 is started to drive the annular plate 5 and the molding die 10 to move downward. At this time, the moon cake can be ejected from the inside of the molding die 10 under the action of the set top plate 11, thereby facilitating the removal of the moon cake; when the device needs to be cleaned after use, the rotating rod 32 is driven to rotate by starting the motor 31, and then the bevel gear 35 and the bevel gear 36 are set. Under the action of wheel two 33, the threaded rod one 34 can be driven to rotate, and through the rotation of the threaded rod one 34, under the action of the set T-shaped rod 36, the two T-shaped plates 37 can be driven to move away from each other, and then the two blocking blocks one 39 can be driven to move out from the inside of the two card slots one 15 respectively. At this time, the top plate 11 can be conveniently removed from the device. During the rotation of the rotating rod 32, under the action of the set sleeve 61, bevel gear three 62, bevel gear four 63, threaded rod two 65 and vertical plate 68, the two blocking blocks two 68 can be driven to be taken out from the inside of the two card slots two 14 respectively. At this time, the pressing plate 9 can be conveniently removed from the device, and then the molding mold 10 can be conveniently removed from the device by rotating the four wing nuts 12, so that the pressing plate 9, the top plate 11 and the molding mold 10 can be conveniently cleaned.

[0031] In the description of the present invention, it is necessary to understand that the indicated orientation or positional relationship is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0032] In the present invention, unless otherwise clearly stipulated and limited, for example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. Unless otherwise clearly defined, for ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0033] Although 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 the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A quick prototyping device for processing moon cakes that is easy to clean, comprising a bottom plate (1), characterized in that: The upper end of the bottom plate (1) is fixedly connected to a transmission installation assembly (3); the upper side of the transmission installation assembly (3) is clamped with a square block (13) with a clamping groove (15) provided inside the left and right ends; the upper end of the square block (13) is fixedly connected to the lower end of the top plate (11); the outer side of the top plate (11) is sleeved with the inner side of the forming mold (10); the forming mold (10) is threadedly connected to an annular plate (5) with four threaded holes provided inside through four wing nuts (12) provided thereon; the transmission installation assembly The upper end of the transmission mounting assembly (3) is movably connected to the upper surface of the interior of the fixing frame (2); the upper side of the transmission mounting assembly (3) is movably connected to the left side of the fixing assembly (6); the lower side of the fixing assembly (6) is engaged with a square block (8) having two card slots (14) provided inside the left and right ends; the square block (8) is sleeved with the lower side of the fixing assembly (6) through a limiting hole provided inside the square block (8); the lower end of the square block (8) is fixedly connected to the upper end of the pressure plate (9); and the upper side of the fixing assembly (6) is fixedly connected with four electric hydraulic rods (7).

2. The quick prototyping device for processing moon cakes that is convenient to clean according to claim 1, characterized in that: The lower end of the fixing frame (2) is fixedly connected to the upper end of the base plate (1), the upper ends of the four electric hydraulic rods (7) are fixedly connected to the internal upper surface of the fixing frame (2), the lower end of the annular plate (5) is fixedly connected to the four electric hydraulic rods (4), and the lower ends of the four electric hydraulic rods (4) are fixedly connected to the upper end of the base plate (1).

3. The quick prototyping device for processing moon cakes that is convenient to clean according to claim 1, characterized in that: The transmission mounting assembly (3) comprises a motor (31), the lower end of the motor (31) being fixedly connected to the upper end of the base plate (1), the motor (31) being fixedly connected to the lower end of a rotating rod (32) via an output shaft provided thereon, and the rotating rod (32) being movably connected to the left side of the fixed assembly (6) via two guide sliders provided thereon.

4. The quick prototyping device for processing moon cakes that is convenient to clean according to claim 3 is characterized by: The upper end of the rotating rod (32) is movably connected to the upper surface of the interior of the fixed frame (2); the lower side of the rotating rod (32) is fixedly connected to a bevel gear 1 (35); the bevel gear 1 (35) is meshed with the bevel gear 2 (33) for transmission; the bevel gear 2 (33) is fixedly connected to the left end of the threaded rod 1 (34); the middle bare rod position of the threaded rod 1 (34) is movably connected to a support base (38) having a connection hole formed therein.

5. The quick prototyping device for processing moon cakes that is convenient to clean according to claim 4, characterized in that: The lower end of the support base (38) is fixedly connected to the upper end of the bottom plate (1); the support base (38) is clamped with the square block 1 (13) via a square groove (310) provided inside the upper end thereof; the threaded rod 1 (34) is threadedly connected to two T-shaped plates (37) each having a threaded hole provided inside the lower end thereof; and the relatively close ends of the two T-shaped plates (37) are fixedly connected with a clamping block 1 (39).

6. The quick prototyping device for processing moon cakes that is convenient to clean according to claim 5, characterized in that: The relatively close ends of the two clamping blocks (39) pass through the left and right ends of the square groove (310) respectively and are clamped with the square block (13) with clamping grooves (15) provided inside the left and right ends. The two T-shaped plates (37) are movably connected to the four T-shaped rods (36) through two circular holes provided inside the lower sides thereof. The four T-shaped rods (36) are arranged in pairs and their relatively close ends are fixedly connected to the left and right ends of the support base (38) respectively.

7. The quick prototyping device for processing moon cakes that is convenient to clean according to claim 3, characterized in that: The fixing assembly (6) comprises a sleeve (61), the sleeve (61) being movably connected to a rotating rod (32) having two guide slide blocks disposed thereon via two guide slide grooves disposed therein, a bevel gear three (62) being fixedly connected to the lower side of the sleeve (61), the bevel gear three (62) being meshed with a bevel gear four (63) for transmission, the bevel gear four (63) being fixedly connected to the left end of a threaded rod two (65), and the threaded rod two (65) being threadedly connected to two vertical plates (68) each having a threaded hole disposed therein.

8. The quick prototyping device for processing moon cakes that is convenient to clean according to claim 7, characterized in that: The lower sides of the two vertical plates (68) respectively pass through two movable through slots provided in the upper end of the concave plate (66) and are respectively fixedly connected to the two second clamping blocks (69). The two second clamping blocks (69) are both clamped with the square block (8) having two second clamping slots (14) provided therein. The two vertical plates (68) are respectively movably connected to the two fixing rods (611) through the two circular holes provided in the upper ends thereof. The left and right ends of the two fixing rods (611) are respectively fixedly connected to the relatively close ends of the two fixing plates (67). The lower ends of the two fixing plates (67) are both fixedly connected to the upper end of the concave plate (66).

9. The quick prototyping device for processing moon cakes that is convenient to clean according to claim 8, characterized in that: The upper end of the concave plate (66) is fixedly connected to the lower ends of the four electric hydraulic rods (7); a limit rod (610) is fixedly connected to the upper surface of the inner part of the concave plate (66); the limit rod (610) is sleeved with a square block (8) having a limit hole provided therein; the upper end of the fixed plate (67) on the left side is fixedly connected to an L-shaped plate (64); the L-shaped plate (64) is movably connected to the sleeve (61) via a connection hole provided therein at its left end.

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