Freeze-drying type lactic acid bacteria powder freeze-drying equipment

Abstract

The utility model relates to the technical field of lactic acid bacteria powder freeze-drying, in particular to freeze-drying type lactic acid bacteria powder freeze-drying equipment which is convenient for feeding and discharging lactic acid bacteria, improves the convenience, is convenient for observing the freeze-drying degree in a freeze-drying bin and improves the practicability. Comprising a freeze-drying mechanism; the freeze-drying device comprises a freeze-drying mechanism and further comprises an observation mechanism, a cleaning mechanism, a feeding mechanism, a conveying mechanism and a supporting mechanism, the observation mechanism is installed on the freeze-drying mechanism, the cleaning mechanism is installed on the observation mechanism, the feeding mechanism is installed on the freeze-drying mechanism, the conveying mechanism is installed at the bottom end of the feeding mechanism, and the supporting mechanism is installed at the bottom end of the feeding mechanism. The lactic acid bacteria can be conveniently freeze-dried through the freeze-drying mechanism, the freeze-drying condition in the freeze-drying mechanism can be conveniently observed through the observation mechanism, the observation mechanism can be conveniently cleaned through the cleaning mechanism, the conveying mechanism assists the feeding mechanism in conveying, feeding and discharging the lactic acid bacteria, and the conveying mechanism can be conveniently supported and stored through the supporting mechanism.

Description

Technical Field

[0001] The utility model relates to the technical field of freeze-drying of lactic acid bacteria powder, in particular to freeze-drying equipment for freeze-dried lactic acid bacteria powder. Background Art

[0002] Freeze-dried lactic acid bacteria powder is a lactic acid bacteria product that has been specially processed. It uses a unique freeze-drying technology to freeze the lactic acid bacteria into a solid state at low temperatures, and then sublimate the solid ice directly into a gas state without passing through a liquid state in a vacuum environment, thereby obtaining freeze-dried lactic acid bacteria powder. This technology can retain the activity and stability of lactic acid bacteria to the greatest extent, while facilitating storage and transportation.

[0003] In the existing freeze-drying technology of lactic acid bacteria powder, for example, the prior art with application number CN202221750807.3, including a freeze-drying bin, a bin body, a feed end, a discharge end, a movable rod, a heating plate and a linkage shaft, etc., since the heating system and the refrigeration system are combined into one, the heat pump unit in the heating system is fully utilized to recover and reuse the heat generated by the refrigeration system, which greatly reduces the carbon emissions and energy consumption of the freeze-drying equipment and achieves the purpose of energy saving and emission reduction.

[0004] However, in the prior art, when freeze-drying a large amount of lactic acid bacteria, loading and unloading of the lactic acid bacteria is relatively cumbersome and requires manual handling, resulting in low efficiency. Utility Model Content

[0005] In order to solve the above technical problems, the utility model provides a freeze-drying type lactic acid bacteria powder freeze-drying equipment which is convenient for loading and unloading lactic acid bacteria, thus improving convenience, and is also convenient for observing the freeze-drying degree in the freeze-drying chamber, thus improving practicality.

[0006] The utility model discloses a freeze-drying device for freeze-dried lactic acid bacteria powder, comprising a freeze-drying mechanism; an observation mechanism, a cleaning mechanism, a feeding mechanism, a transport mechanism and a supporting mechanism, wherein the observation mechanism is mounted on the freeze-drying mechanism, the cleaning mechanism is mounted on the observation mechanism, the feeding mechanism is mounted on the freeze-drying mechanism, the transport mechanism is mounted on the bottom end of the feeding mechanism, and the supporting mechanism is mounted on the bottom end of the feeding mechanism, the freeze-drying mechanism is convenient for freeze-drying lactic acid bacteria, the observation mechanism is convenient for observing the freeze-drying situation in the freeze-drying mechanism, the cleaning mechanism is convenient for cleaning the observation mechanism, the transport mechanism assists the feeding mechanism in transporting and loading lactic acid bacteria, and the supporting mechanism is convenient for supporting and storing the transport mechanism; the freeze-drying mechanism is convenient for freeze-drying lactic acid bacteria, the observation mechanism is convenient for observing the freeze-drying situation in the freeze-drying mechanism, thereby improving practicality, the cleaning mechanism is convenient for cleaning the observation mechanism, the transport mechanism assists the feeding mechanism in transporting and loading lactic acid bacteria, thereby improving convenience, and the supporting mechanism is convenient for supporting and storing the transport mechanism.

[0007] Preferably, the freeze-drying mechanism includes a base plate, a freeze-drying chamber, a sealed door and a fixed handle, the freeze-drying chamber is installed on the top of the base plate, the sealed door is rotatably installed on the side wall of the freeze-drying chamber, and the fixed handle is installed on the freeze-drying chamber; the sealed door is sealed on the freeze-drying chamber by the fixed handle, and the lactic acid bacteria are freeze-dried through the freeze-drying chamber.

[0008] Preferably, the observation mechanism includes an observation window and a cleaning auxiliary groove, the observation window is installed on the sealed door, and the cleaning auxiliary groove is installed on the inner wall of the sealed door; the observation window is convenient for observing the degree of freeze-drying in the freeze-drying chamber, thereby improving practicality, and the cleaning auxiliary groove is convenient for the auxiliary cleaning mechanism to clean the observation window.

[0009] Preferably, the cleaning mechanism includes a cleaning plate, a first slide groove, a turntable, an eccentric shaft and a cleaning motor, the cleaning plate is rotatably installed in the cleaning auxiliary groove by the rotating shaft, one end of the cleaning plate scrapes the observation window, the other end of the cleaning plate is provided with a first slide groove, the turntable is rotatably installed in the cleaning auxiliary groove, the eccentric shaft is eccentrically installed on the turntable, the eccentric shaft is slidably installed in the first slide groove, the cleaning motor is installed above the outer wall of the sealing door, and the output end of the cleaning motor is connected to the turntable; when the observation window is to be cleaned, the turntable is driven to rotate by turning on the cleaning motor, which in turn drives the eccentric shaft to rotate eccentrically, and then drives the eccentric shaft to slide in the first slide groove, so that the cleaning plate swings to clean the observation window.

[0010] Preferably, the loading mechanism includes a sliding plate, a placement rack and a slide, a slider is provided at the bottom end of the sliding plate, the placement rack is installed at the top end of the sliding plate, and the slide is installed in the freeze-drying chamber; the lactic acid bacteria are placed on the placement rack, and then the slider of the sliding plate slides in the slide, thereby facilitating the lactic acid bacteria to be sent to the freeze-drying chamber for freeze-drying.

[0011] Preferably, the transport mechanism includes a rotating seat, a rotating arm and a wheel hub, the rotating seat is installed at the bottom end of the sliding plate, the rotating arm is rotatably installed on the rotating seat, and the wheel hub is installed at the bottom end of the rotating arm; when the lactic acid bacteria are to be loaded, the slider at the bottom end of the sliding plate is aligned with the slideway, and then the placement rack is pushed to make the sliding plate slide on the slideway, and at the same time, the sliding plate that has not entered the freeze-drying chamber is supported and transported by the rotation of the wheel hub.

[0012] Preferably, the supporting mechanism comprises a guide block, a sliding block, a telescopic rod, a fixed plate, a spring, a push rod and a connecting rod, the guide block is mounted on the bottom end of the sliding plate, a second slide groove and a fixed groove are provided on the guide block, the second slide groove is communicated with the fixed groove, the sliding block is slidably mounted in the second slide groove, the telescopic rod is mounted on the bottom end of the sliding block, the fixed plate is mounted on the bottom end of the telescopic rod, one end of the spring is mounted on the top end of the fixed plate, the other end of the spring is mounted on the bottom end of the sliding block, the push rod is mounted on the bottom end of the fixed plate, an unlocking slide groove is provided at the bottom end of the guide block, the push rod is slidably mounted in the unlocking slide groove, one end of the connecting rod One end is rotatably installed on the sliding block, and the other end of the connecting rod is rotatably installed on the rotating arm; when the rotating arm needs to be supported, the rotating arm is rotated to drive the sliding block to slide in the second sliding groove under the pull of the connecting rod. When the fixed plate is aligned with the fixed groove, the telescopic rod is lengthened by the elasticity of the spring, and the fixed plate is pushed into the fixed groove, thereby completing the fixation of the sliding block and the support of the rotating arm. When the wheel hub needs to be stored, the push rod is pressed to make the spring contract, thereby pushing the fixed plate into the fixed groove and into the second sliding groove, and then the rotating arm is rotated to complete the storage of the wheel hub.

[0013] Compared with the prior art, the beneficial effects of the utility model are as follows: the freeze-drying mechanism facilitates freeze-drying of lactic acid bacteria, the observation mechanism facilitates observation of the freeze-drying situation in the freeze-drying mechanism, thereby improving practicality, the cleaning mechanism facilitates cleaning of the observation mechanism, the transportation mechanism assists the loading mechanism in transporting and loading lactic acid bacteria, thereby improving convenience, and the support mechanism facilitates support and storage of the transportation mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a first axonometric structural schematic diagram of the utility model;

[0015] Figure 2 It is a second axonometric structural schematic diagram of the utility model;

[0016] Figure 3 It is a third axonometric structural schematic diagram of the utility model;

[0017] Figure 4 It is a fourth axonometric structural schematic diagram of the utility model;

[0018] Figure 5 It is a front-view cross-sectional axonometric structural schematic diagram of the utility model;

[0019] Figure 6 The utility model Figure 5 A schematic diagram of the enlarged structure at A in the middle;

[0020] Markings in the accompanying drawings: 01, freeze-drying mechanism; 11, bottom plate; 12, freeze-drying chamber; 13, sealing door; 14, fixed handle; 02, observation mechanism; 21, observation window; 22, cleaning auxiliary groove; 03, cleaning mechanism; 31, cleaning plate; 32, first slide groove; 33, turntable; 34, eccentric shaft; 35, cleaning motor; 04, feeding mechanism; 41, sliding plate; 42, placement rack; 43, slide; 05, transportation mechanism; 51, rotating seat; 52, rotating arm; 53, wheel hub; 06, supporting mechanism; 61, guide block; 62, second slide groove; 63, fixed groove; 64, sliding block; 65, telescopic rod; 66, fixed plate; 67, spring; 68, push rod; 69, connecting rod. DETAILED DESCRIPTION

[0021] In order to facilitate the understanding of the utility model, the utility model will be described more comprehensively below with reference to the relevant drawings. The utility model can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the utility model more thorough and comprehensive. Example

[0022] like Figures 1 to 4 As shown, it includes a freeze-drying mechanism 01, an observation mechanism 02, a cleaning mechanism 03, a feeding mechanism 04, a transportation mechanism 05 and a supporting mechanism 06, wherein the observation mechanism 02 is mounted on the freeze-drying mechanism 01, the cleaning mechanism 03 is mounted on the observation mechanism 02, the feeding mechanism 04 is mounted on the freeze-drying mechanism 01, the transportation mechanism 05 is mounted on the bottom end of the feeding mechanism 04, and the supporting mechanism 06 is mounted on the bottom end of the feeding mechanism 04;

[0023] The freeze-drying mechanism 01 facilitates freeze-drying of the lactic acid bacteria, the observation mechanism 02 facilitates observation of the freeze-drying condition in the freeze-drying mechanism 01, the cleaning mechanism 03 facilitates cleaning of the observation mechanism 02, the transport mechanism 05 assists the loading mechanism 04 in transporting and loading the lactic acid bacteria, and the support mechanism 06 facilitates support and storage of the transport mechanism 05;

[0024] The freeze drying mechanism 01 includes a bottom plate 11, a freeze drying chamber 12, a sealing door 13 and a fixed handle 14. The freeze drying chamber 12 is installed on the top of the bottom plate 11, the sealing door 13 is rotatably installed on the side wall of the freeze drying chamber 12, and the fixed handle 14 is installed on the freeze drying chamber 12;

[0025] The observation mechanism 02 includes an observation window 21 and a cleaning auxiliary groove 22. The observation window 21 is installed on the sealing door 13, and the cleaning auxiliary groove 22 is installed on the inner wall of the sealing door 13;

[0026] The cleaning mechanism 03 includes a cleaning plate 31, a first chute 32, a rotating disk 33, an eccentric shaft 34 and a cleaning motor 35. The cleaning plate 31 is rotatably installed in the cleaning auxiliary groove 22 through a rotating shaft. One end of the cleaning plate 31 scrapes the observation window 21. The other end of the cleaning plate 31 is provided with a first chute 32. The rotating disk 33 is rotatably installed in the cleaning auxiliary groove 22. The eccentric shaft 34 is eccentrically installed on the rotating disk 33. The eccentric shaft 34 is slidably installed in the first chute 32. The cleaning motor 35 is installed above the outer wall of the sealing door 13, and the output end of the cleaning motor 35 is connected to the rotating disk 33.

[0027] The sealing door 13 is sealed on the freeze-drying chamber 12 by fixing the handle 14, and the lactic acid bacteria are freeze-dried through the freeze-drying chamber 12. The freeze-drying degree in the freeze-drying chamber 12 can be observed through the observation window 21, thereby improving practicality. The auxiliary cleaning groove 22 is used to facilitate the auxiliary cleaning mechanism 03 to clean the observation window 21. When the observation window 21 needs to be cleaned, the turntable 33 is driven to rotate by turning on the cleaning motor 35, thereby driving the eccentric shaft 34 to rotate eccentrically, and then driving the eccentric shaft 34 to slide in the first slide groove 32, so that the cleaning plate 31 swings to clean the observation window 21. The transportation mechanism 05 assists the loading mechanism 04 in transporting and loading lactic acid bacteria, thereby improving convenience. The support mechanism 06 is used to facilitate the support and storage of the transportation mechanism 05. Example

[0028] like Figure 2 and Figure 6 As shown, it includes a freeze-drying mechanism 01, an observation mechanism 02, a cleaning mechanism 03, a feeding mechanism 04, a transportation mechanism 05 and a supporting mechanism 06, wherein the observation mechanism 02 is mounted on the freeze-drying mechanism 01, the cleaning mechanism 03 is mounted on the observation mechanism 02, the feeding mechanism 04 is mounted on the freeze-drying mechanism 01, the transportation mechanism 05 is mounted on the bottom end of the feeding mechanism 04, and the supporting mechanism 06 is mounted on the bottom end of the feeding mechanism 04;

[0029] The freeze-drying mechanism 01 facilitates freeze-drying of the lactic acid bacteria, the observation mechanism 02 facilitates observation of the freeze-drying condition in the freeze-drying mechanism 01, the cleaning mechanism 03 facilitates cleaning of the observation mechanism 02, the transport mechanism 05 assists the loading mechanism 04 in transporting and loading the lactic acid bacteria, and the support mechanism 06 facilitates support and storage of the transport mechanism 05;

[0030] The feeding mechanism 04 includes a sliding plate 41, a placement rack 42 and a slide 43. A slider is provided at the bottom end of the sliding plate 41, the placement rack 42 is installed at the top end of the sliding plate 41, and the slide 43 is installed in the freeze-drying chamber 12;

[0031] The transport mechanism 05 includes a rotating seat 51, a rotating arm 52 and a wheel hub 53. The rotating seat 51 is mounted on the bottom end of the sliding plate 41, the rotating arm 52 is rotatably mounted on the rotating seat 51, and the wheel hub 53 is mounted on the bottom end of the rotating arm 52;

[0032] The supporting mechanism 06 includes a guide block 61, a sliding block 64, a telescopic rod 65, a fixed plate 66, a spring 67, a push rod 68 and a connecting rod 69. The guide block 61 is installed at the bottom end of the sliding plate 41. The guide block 61 is provided with a second slide groove 62 and a fixed groove 63. The second slide groove 62 is communicated with the fixed groove 63. The sliding block 64 is slidably installed in the second slide groove 62. The telescopic rod 65 is installed at the bottom end of the sliding block 64. The fixed plate 66 is installed at the bottom end of the telescopic rod 65. One end of the spring 67 is installed at the top end of the fixed plate 66. The other end of the spring 67 is installed at the bottom end of the sliding block 64. The push rod 68 is installed at the bottom end of the fixed plate 66. The bottom end of the guide block 61 is provided with an unlocking slide groove. The push rod 68 is slidably installed in the unlocking slide groove. One end of the connecting rod 69 is rotatably installed on the sliding block 64, and the other end of the connecting rod 69 is rotatably installed on the rotating arm 52.

[0033] The freeze-drying mechanism 01 is used to facilitate freeze-drying of the lactic acid bacteria, the observation mechanism 02 is used to facilitate observation of the freeze-drying situation in the freeze-drying mechanism 01, and the practicality is improved. The cleaning mechanism 03 is used to facilitate cleaning of the observation mechanism 02. The lactic acid bacteria are placed on the placement rack 42, and then the slider of the sliding plate 41 slides in the slideway 43, so that the lactic acid bacteria are conveniently sent to the freeze-drying chamber 12 for freeze-drying. When the lactic acid bacteria are to be loaded, the slider at the bottom of the sliding plate 41 is aligned with the slideway 43, and then the placement rack 42 is pushed to make the sliding plate 41 slide on the slideway 43, and at the same time, the sliding plate 41 that has not entered the freeze-drying chamber 12 is rotated by the wheel hub 53. 1 is used for support and transportation. When the rotating arm 52 is to be supported, the rotating arm 52 is rotated to drive the sliding block 64 to slide in the second sliding groove 62 under the pull of the connecting rod 69. When the fixing plate 66 is aligned with the fixing groove 63, the telescopic rod 65 is elongated by the elasticity of the spring 67, and the fixing plate 66 is pushed into the fixing groove 63, thereby completing the fixation of the sliding block 64 and the support of the rotating arm 52. When the wheel hub 53 is to be stored, the push rod 68 is pressed to make the spring 67 contract, thereby pushing the fixing plate 66 into the fixing groove 63 and entering into the second sliding groove 62, and then the rotating arm 52 is rotated to complete the storage of the wheel hub 53.

[0034] like Figures 1 to 6As shown, a freeze-drying device for freeze-dried lactic acid bacteria powder of the present invention is provided. When working, the sealing door 13 is sealed on the freeze-drying chamber 12 by fixing the handle 14, and the lactic acid bacteria are freeze-dried through the freeze-drying chamber 12. The freeze-drying degree in the freeze-drying chamber 12 can be observed through the observation window 21, thereby improving practicality. The auxiliary cleaning groove 22 is used to facilitate the auxiliary cleaning mechanism 03 to clean the observation window 21. When the observation window 21 needs to be cleaned, the turntable 33 is driven to rotate by turning on the cleaning motor 35, thereby driving the eccentric shaft 34 to rotate eccentrically, thereby driving the eccentric shaft 34 to slide in the first slide groove 32, so that the cleaning plate 31 swings to clean the observation window 21, and the lactic acid bacteria are placed on the placement rack 42, and then the slider of the sliding plate 41 slides in the slideway 43, thereby facilitating the lactic acid bacteria to be sent into the freeze-drying chamber 12 for freeze-drying. When loading, the slider at the bottom of the sliding plate 41 is aligned with the slideway 43, and then the placement rack 42 is pushed to make the sliding plate 41 slide on the slideway 43, and at the same time, the sliding plate 41 that has not entered the freeze-drying chamber 12 is supported and transported by the rotation of the wheel hub 53. When the rotating arm 52 is to be supported, the rotating arm 52 is rotated to drive the sliding block 64 to slide in the second slide groove 62 under the pulling of the connecting rod 69. When the fixed plate 66 is aligned with the fixed groove 63, the telescopic rod 65 is elongated by the elasticity of the spring 67, and the fixed plate 66 is pushed into the fixed groove 63, thereby completing the fixation of the sliding block 64 and the support of the rotating arm 52. When the wheel hub 53 is to be stored, the push rod 68 is pressed to make the spring 67 contract, thereby pushing the fixed plate 66 into the fixed groove 63 and entering the second slide groove 62, and then the rotating arm 52 is rotated to complete the storage of the wheel hub 53.

[0035] The freeze-drying chamber 12 and the cleaning motor 35 of the utility model are purchased on the market, and technicians in the industry only need to install and operate them according to the accompanying instruction manuals, without the need for creative work by technicians in the field.

[0036] The main functions achieved by the utility model are: in the freeze-drying process of lactic acid bacteria powder, it is convenient to load and unload lactic acid bacteria, thereby improving convenience, and it is also convenient to observe the freeze-drying degree in the freeze-drying chamber 12, thereby improving practicality.

[0037] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principle of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. A freeze-drying device for freeze-dried lactic acid bacteria powder, comprising a freeze-drying mechanism (01); characterized in that: It also includes an observation mechanism (02), a cleaning mechanism (03), a feeding mechanism (04), a transportation mechanism (05) and a supporting mechanism (06), wherein the observation mechanism (02) is mounted on the freeze-drying mechanism (01), the cleaning mechanism (03) is mounted on the observation mechanism (02), the feeding mechanism (04) is mounted on the freeze-drying mechanism (01), the transportation mechanism (05) is mounted at the bottom end of the feeding mechanism (04), and the supporting mechanism (06) is mounted at the bottom end of the feeding mechanism (04); The freeze-drying mechanism (01) facilitates freeze-drying of lactic acid bacteria, the observation mechanism (02) facilitates observation of the freeze-drying conditions in the freeze-drying mechanism (01), the cleaning mechanism (03) facilitates cleaning of the observation mechanism (02), the transport mechanism (05) assists the loading mechanism (04) in transporting and loading lactic acid bacteria, and the support mechanism (06) facilitates support and storage of the transport mechanism (05).

2. A freeze-drying device for freeze-dried lactic acid bacteria powder according to claim 1, characterized in that: The freeze-drying mechanism (01) comprises a bottom plate (11), a freeze-drying chamber (12), a sealed door (13) and a fixed handle (14); the freeze-drying chamber (12) is mounted on the top of the bottom plate (11); the sealed door (13) is rotatably mounted on the side wall of the freeze-drying chamber (12); and the fixed handle (14) is mounted on the freeze-drying chamber (12).

3. A freeze-drying device for freeze-dried lactic acid bacteria powder according to claim 2, characterized in that: The observation mechanism (02) comprises an observation window (21) and a cleaning auxiliary groove (22); the observation window (21) is mounted on the sealing door (13); and the cleaning auxiliary groove (22) is mounted on the inner wall of the sealing door (13).

4. A freeze-drying device for freeze-dried lactic acid bacteria powder according to claim 3, characterized in that: The cleaning mechanism (03) comprises a cleaning plate (31), a first chute (32), a rotating disk (33), an eccentric shaft (34) and a cleaning motor (35). The cleaning plate (31) is rotatably mounted in the cleaning auxiliary groove (22) via a rotating shaft. One end of the cleaning plate (31) scrapes the observation window (21). The other end of the cleaning plate (31) is provided with a first chute (32). The rotating disk (33) is rotatably mounted in the cleaning auxiliary groove (22). The eccentric shaft (34) is eccentrically mounted on the rotating disk (33). The eccentric shaft (34) is slidably mounted in the first chute (32). The cleaning motor (35) is mounted above the outer wall of the sealing door (13). The output end of the cleaning motor (35) is connected to the rotating disk (33).

5. A freeze-drying device for freeze-dried lactic acid bacteria powder according to claim 2, characterized in that: The loading mechanism (04) comprises a sliding plate (41), a placement rack (42) and a slideway (43), wherein a slider is provided at the bottom end of the sliding plate (41), the placement rack (42) is installed at the top end of the sliding plate (41), and the slideway (43) is installed in the freeze-drying chamber (12).

6. A freeze-drying device for freeze-dried lactic acid bacteria powder according to claim 5, characterized in that: The transport mechanism (05) comprises a rotating seat (51), a rotating arm (52) and a wheel hub (53), wherein the rotating seat (51) is mounted on the bottom end of the sliding plate (41), the rotating arm (52) is rotatably mounted on the rotating seat (51), and the wheel hub (53) is mounted on the bottom end of the rotating arm (52).

7. A freeze-drying device for freeze-dried lactic acid bacteria powder according to claim 5, characterized in that: The support mechanism (06) comprises a guide block (61), a sliding block (64), a telescopic rod (65), a fixed plate (66), a spring (67), a push rod (68) and a connecting rod (69). The guide block (61) is mounted at the bottom end of the sliding plate (41). A second slide groove (62) and a fixed groove (63) are provided on the guide block (61). The second slide groove (62) is connected to the fixed groove (63). The sliding block (64) is slidably mounted in the second slide groove (62). The telescopic rod (65) is mounted on the sliding block (64). The bottom end of the telescopic rod (65) is provided with a fixed plate (66) mounted on the bottom end of the telescopic rod (65), one end of the spring (67) is mounted on the top end of the fixed plate (66), the other end of the spring (67) is mounted on the bottom end of the sliding block (64), a push rod (68) is mounted on the bottom end of the fixed plate (66), an unlocking slide groove is provided at the bottom end of the guide block (61), the push rod (68) is slidably mounted in the unlocking slide groove, one end of the connecting rod (69) is rotatably mounted on the sliding block (64), and the other end of the connecting rod (69) is rotatably mounted on the rotating arm (52).

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