An anti-crowding rail transit gate

Abstract

The present invention discloses an anti-congestion rail transit gate, which relates to the technical field of traffic gates. It comprises two gate bodies, the side end faces of the two gate bodies are provided with mounting grooves, the inner bottom of the mounting groove is fixedly provided with a bracket plate, a first electric push rod is rotatably provided on the bracket plate, and an anti-congestion component is provided on the output rod of the first electric push rod; the inner side surface of the gate body is fixedly provided with a bottom plate, an expansion component is provided below the bottom plate, and a first expansion rod and a second expansion rod are provided on the expansion component. The size of the gate body entrance can be adjusted by cooperating with the first expansion rod and the second expansion rod. This invention can not only quickly expand the size of the guardrail entrance outside the gate by cooperating with the anti-congestion component, the expansion component and the diversion component, but also effectively manage personnel queues, ensure the efficiency and order of passage under high traffic conditions, and effectively improve the use effect of the traffic gate.

Description

Technical Field

[0001] The present invention relates to the technical field of traffic gates, and in particular to an anti-crowding rail transit gate. Background Art

[0002] Traffic turnstiles are automated devices used to control the flow of people into and out of specific areas. They are commonly found in places like subways, bus stations, airports, commercial buildings, and parking lots. Their primary function is to allow or deny access by verifying identity (e.g., by swiping a card, scanning a QR code, or using fingerprint recognition).

[0003] In the prior art, a Chinese patent with publication number "CN217378689U" discloses an anti-congestion rail transit gate. By rotating the bottom plate to both sides, the bottom area of ​​the second rectangular trough box is increased, the stability of the second rectangular trough box is improved, and the sliding threaded rod makes the anti-skid shoe contact the ground. The nut sleeve is rotated to gather several elastic sheets in the nut sleeve to clamp the threaded rod. The vacuum pump body pumps the air cavity in the anti-skid shoe into a negative pressure, so that the anti-skid shoe is firmly adsorbed on the ground, thereby improving the stability of the device. The protective rod connected by the X-shaped end-to-end cross can be extended and retracted in the horizontal or vertical space. When stretched, it can serve as a limiting boundary. When contracted, it is easy to be stored in the built-in slot, thereby improving space utilization and solving the problem that the guardrail placed outside the existing gate is prone to tipping over.

[0004] Existing traffic gates have the problem of people getting injured due to crowded passenger flow when passing through the gates. Most of the gates are equipped with guardrails. As in the solution described above, an X-shaped guardrail with end-to-end cross-connections can be extended and retracted in the horizontal or vertical space, and anti-slip feet are used to prevent the guardrail from tipping over. However, in this solution, the entrance of the guardrail cannot be adjusted. When the passenger flow is large, the fixed guardrail entrance cannot adjust its width in time to adapt to the high-density flow of people, which will cause congestion at the entrance. Long-term detention will affect the traffic efficiency and increase the waiting time of people. Summary of the Invention

[0005] In view of the deficiencies in the prior art, the present invention provides an anti-crowding rail transit gate that solves the problems mentioned in the above background technology.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions:

[0007] An anti-congestion rail transit gate comprises two gate bodies, each of the two gate bodies having a mounting groove formed on its side end surface, a bracket plate fixedly mounted on the inner bottom of the mounting groove, a first electric push rod rotatably mounted on the bracket plate, and an anti-congestion component provided on the output rod of the first electric push rod;

[0008] A bottom plate is fixedly mounted on the inner side of the gate body, an expansion assembly is provided below the bottom plate, and a first expansion rod and a second expansion rod are provided on the expansion assembly. The size of the gate body entrance can be adjusted by cooperating with the first expansion rod and the second expansion rod;

[0009] A diverter assembly is provided on the side end surface of the bottom plate, and a diverter rod is provided on the diverter assembly, so that crowded people can queue up in an orderly manner.

[0010] Preferably, the anti-congestion component includes a first mounting shaft rotatably mounted in the mounting groove, a driving rod rotatably mounted on the first mounting shaft, a first connecting shaft rotatably mounted on the driving rod, a linkage rod rotatably mounted on the first connecting shaft, a second mounting shaft rotatably mounted on the inner side surface of the mounting groove, and a driven rod rotatably mounted on the second mounting shaft.

[0011] Preferably, a first positioning shaft is fixedly mounted on one end of the driving rod away from the first mounting shaft, a U-shaped frame plate is rotatably mounted on the first positioning shaft, a second positioning shaft is rotatably mounted inside the U-shaped frame plate, and a transmission rod is fixedly mounted on the second positioning shaft.

[0012] Preferably, the linkage shaft is rotatably mounted on one end of the linkage rod away from the driving rod, the driven rod is rotatably mounted on the linkage shaft at one end away from the second mounting shaft, the transmission rod is rotatably mounted on the linkage shaft at one end away from the second positioning shaft, a connecting frame is fixedly mounted on the lower end surface of the driving rod, a connecting block is fixedly mounted on the output rod of the first electric push rod, and the connecting block is rotatably mounted inside the connecting frame.

[0013] Preferably, the expansion component includes a mounting frame fixedly mounted on a U-shaped frame plate, a fixing rod is rotatably mounted on the mounting frame, a rotating hole is opened at the bottom end of the fixing rod, a rotating shaft is rotatably mounted inside the rotating hole, and the first expansion rod and the second expansion rod are respectively fixedly mounted on the two rotating shafts.

[0014] Preferably, a connecting rod is fixedly installed between the two fixed rods, a second electric push rod is fixedly installed on the connecting rod, a pushing frame is fixedly installed on the output rod of the second electric push rod, and two symmetrically arranged pushing grooves are provided on the pushing frame, and a first rotating plate and a second rotating plate are rotatably installed inside the two pushing grooves respectively, and a positioning frame is fixedly installed on both the first extension rod and the second extension rod.

[0015] Preferably, the end of the first rotating plate away from the pushing groove is rotatably mounted in the positioning frame on the first extension rod, and the end of the second rotating plate away from the pushing groove is rotatably mounted in the positioning frame on the second extension rod, and the first rotating plate and the second rotating plate are arranged at an angle.

[0016] Preferably, the diversion assembly includes a spiral hole opened on the side end face of the base plate, a spiral rod is movably installed in the spiral hole, a connecting plate is fixedly installed at one end of the spiral rod, a positioning ring is fixedly installed on the spiral rod, a torsion spring is fixedly connected to the positioning ring, a limiting block is fixedly installed on the outer side surface of the base plate, and a pushing block is fixedly installed on the upper end face of the pushing frame.

[0017] Preferably, one end of the torsion spring away from the positioning ring is fixedly connected to the bottom plate, the pushing block and the spiral rod are in the same horizontal plane, and the diverter rod is fixedly mounted on the connecting plate.

[0018] The present invention provides an anti-crowding rail transit gate. Compared with the existing technology, it has the following advantages:

[0019] 1. The present invention pushes the driving rod by the first electric push rod, and the driving rod will be tilted at an angle through the first connecting shaft. At the same time, the first electric push rod will be synchronously tilted at an angle through the bracket plate. The linkage rod on the driving rod will be synchronously rotated through the first connecting shaft. The driven rod installed on the linkage rod by the linkage shaft will be angularly rotated around the second installation shaft. The U-shaped frame plate installed by the first positioning shaft and the second positioning shaft will be angularly rotated as the driving rod, the driven rod, the linkage rod and the transmission rod are driven. Thus, the angular rotation is achieved to realize horizontal and vertical settings. The expandable and retractable anti-crowding component is used to control the flow of people, prevent crowding or ensure the rational use of space.

[0020] 2. In the present invention, when there are many people and it is necessary to expand the entrance range of the gate body, the second electric push rod drives the pushing frame to move horizontally, and the first rotating plate and the second rotating plate in the two pushing grooves will pass through the limit of the two positioning frames, so that the first expansion rod and the second expansion rod will pass through the limit of the rotating shaft and the rotating hole, thereby expanding outward. Through the expanded first expansion rod and the second expansion rod, the entrance to the gate with the guardrail placed outside the gate is expanded. The expansion component realizes the rapid expansion of the entrance with the guardrail placed outside the gate, which is suitable for high-traffic periods and improves traffic efficiency.

[0021] 3. In the present invention, after the entrance position of the gate body is expanded, in order to ensure that people can queue up in an orderly manner, the pushing frame moves horizontally to the designated position, and the pushing block on the pushing frame pushes the screw rod, which rotates by cooperating with the screw hole. The diverter rod on the connecting plate rotates 90 degrees, changing from a horizontal state to a vertical state. The diverter rod in the vertical state divides the entrance with the guardrail outside the gate into two channels, ensuring that people can queue up in an orderly manner and effectively improving the use effect of the gate body.

[0022] 4. The present invention, through the coordinated use of anti-congestion components, expansion components and diversion components, can not only quickly expand the size of the guardrail entrance outside the gate, but also effectively manage personnel queues, ensure traffic efficiency and order under high traffic conditions, and effectively improve the use effect of the traffic gate. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 The overall structure of the present invention is shown in FIG. Figure 1 ;

[0024] Figure 2 The overall structure of the present invention is shown in FIG. Figure 2 ;

[0025] Figure 3 for Figure 2 Enlarged view of point A in the middle;

[0026] Figure 4 Schematic diagram of the structure of the anti-crowding component of the present invention;

[0027] Figure 5 Schematic diagram of the structure of the connecting rod in the present invention;

[0028] Figure 6 Schematic diagram of the structure of the expansion component in the present invention;

[0029] Figure 7 for Figure 6 Enlarged view of point B in the middle;

[0030] Figure 8 It is a structural schematic diagram of the diversion component in the present invention.

[0031] In the figure: 1. Gate body; 2. Mounting slot; 3. Bracket plate; 4. First electric push rod; 5. Bottom plate; 6. First extension rod; 7. Second extension rod; 8. Diverter rod; 9. First mounting shaft; 10. Drive rod; 11. First connecting shaft; 12. Linkage rod; 13. Second mounting shaft; 14. Driven rod; 15. First positioning shaft; 16. U-shaped bracket plate; 17. Second positioning shaft; 18. Drive rod; 19. Linkage shaft. 20. Connecting frame; 21. Connecting block; 22. Mounting frame; 23. Fixing rod; 24. Rotating hole; 25. Rotating shaft; 26. Connecting rod; 27. Second electric push rod; 28. Pushing frame; 29. ​​Pushing slot; 30. First rotating plate; 31. Second rotating plate; 32. Positioning frame; 33. Spiral hole; 34. Spiral rod; 35. Connecting plate; 36. Positioning ring; 37. Torsion spring; 38. Limiting block; 39. Pushing block. DETAILED DESCRIPTION

[0032] 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.

[0033] See also Figure 1-8 The present invention is an anti-crowding rail transit gate, comprising two gate bodies 1, the side end faces of the two gate bodies 1 are provided with mounting grooves 2, the inner bottom of the mounting groove 2 is fixedly installed with a bracket plate 3, and a first electric push rod 4 is rotatably installed on the bracket plate 3, and an anti-crowding component is provided on the output rod of the first electric push rod 4, and a bottom plate 5 is fixedly installed on the inner side surface of the gate body 1, and an extension component is provided below the bottom plate 5, and a first extension rod 6 and a second extension rod 7 are provided on the extension component. Through the cooperation of the first extension rod 6 and the second extension rod 7, the size of the entrance of the gate body 1 can be adjusted, wherein the power source of the first electric push rod 4 can be installed inside the mounting groove 2, and a card swiping panel is provided on one of the gate bodies 1. Since this technology is well known to people in this field, it will not be described in detail here.

[0034] The anti-crowding component includes a first mounting shaft 9 rotatably mounted in the mounting groove 2, a driving rod 10 rotatably mounted on the first mounting shaft 9, a first connecting shaft 11 rotatably mounted on the driving rod 10, a linkage rod 12 rotatably mounted on the first connecting shaft 11, a second mounting shaft 13 rotatably mounted on the inner side of the mounting groove 2, a driven rod 14 rotatably mounted on the second mounting shaft 13, a first positioning shaft 15 fixedly mounted on one end of the driving rod 10 away from the first mounting shaft 9, a U-shaped frame plate 16 rotatably mounted on the first positioning shaft 15, and a second positioning shaft 16 rotatably mounted inside the U-shaped frame plate 16. Shaft 17, a transmission rod 18 is fixedly mounted on the second positioning shaft 17, a linkage shaft 19 is rotatably mounted on one end of the linkage rod 12 away from the driving rod 10, and the driven rod 14 is rotatably mounted on the linkage shaft 19 at one end away from the second mounting shaft 13, and the transmission rod 18 is rotatably mounted on the linkage shaft 19 at one end away from the second positioning shaft 17. A connecting frame 20 is fixedly mounted on the lower end surface of the driving rod 10, and a connecting block 21 is fixedly mounted on the output rod of the first electric push rod 4, and the connecting block 21 is rotatably mounted on the inside of the connecting frame 20, wherein the driving rod 10 and the driven rod are both arranged obliquely.

[0035] In this embodiment, the driving rod 10 is pushed by the first electric push rod 4, and the driving rod 10 will be tilted at an angle through the first connecting shaft 11. At the same time, the first electric push rod 4 will be synchronously tilted at an angle through the bracket plate 3, and the linkage rod 12 on the driving rod 10 will be synchronously rotated through the first connecting shaft 11. The driven rod 14 installed on the linkage rod 12 by the linkage shaft 19 will be angularly rotated with the second installation shaft 13 as the center. The U-shaped frame plate 16 installed by the first positioning shaft 15 and the second positioning shaft 17 will be driven by the driving rod 10, the driven rod 14, the linkage rod 12 and the transmission rod 18 to rotate at an angle, thereby realizing horizontal and vertical settings, and utilizing an expandable and retractable anti-crowding component to control the flow of personnel, prevent congestion or ensure the rational use of space.

[0036] The expansion assembly includes a mounting frame 22 fixedly mounted on the U-shaped frame plate 16, a fixing rod 23 is rotatably mounted on the mounting frame 22, a rotating hole 24 is provided at the bottom end of the fixing rod 23, a rotating shaft 25 is rotatably mounted inside the rotating hole 24, the first expansion rod 6 and the second expansion rod 7 are respectively fixedly mounted on the two rotating shafts 25, a connecting rod 26 is fixedly mounted between the two fixing rods 23, a second electric push rod 27 is fixedly mounted on the connecting rod 26, and a pushing frame 28 is fixedly mounted on the output rod of the second electric push rod 27, and two symmetrically arranged pushing grooves 29 are provided on the pushing frame 28. The first rotating plate 30 and the second rotating plate 31 are rotatably installed inside the movable groove 29, and the first extension rod 6 and the second extension rod 7 are fixedly installed with a positioning frame 32. The end of the first rotating plate 30 away from the pushing groove 29 is rotatably installed in the positioning frame 32 on the first extension rod 6, and the end of the second rotating plate 31 away from the pushing groove 29 is rotatably installed in the positioning frame 32 on the second extension rod 7. The first rotating plate 30 and the second rotating plate 31 are arranged at an angle, wherein the power source of the second electric push rod 27 is installed on the base plate 5, and the first extension rod 6 and the second extension rod 7 are L-shaped.

[0037] In this embodiment, when there are many people and it is necessary to expand the entrance range of the gate body 1, the second electric push rod 27 drives the pushing frame 28 to move horizontally, and the first rotating plate 30 and the second rotating plate 31 in the two pushing grooves 29 will pass through the limit of the two positioning frames 32, so that the first extension rod 6 and the second extension rod 7 will pass through the limit of the rotating shaft 25 and the rotating hole 24, thereby expanding outward. Through the expanded first extension rod 6 and the second extension rod 7, the entrance to the guardrail outside the gate is expanded, and the rapid expansion of the entrance to the guardrail outside the gate is achieved through the expansion component, which is suitable for high-traffic periods and improves traffic efficiency.

[0038] The side end face of the bottom plate 5 is provided with a diversion assembly, and a diversion rod 8 is provided on the diversion assembly, which facilitates the orderly queuing of crowded people. The diversion assembly includes a spiral hole 33 opened on the side end face of the bottom plate 5, a spiral rod 34 is movably installed in the spiral hole 33, and a connecting plate 35 is fixedly installed at one end of the spiral rod 34. A positioning ring 36 is fixedly installed on the spiral rod 34, and a torsion spring 37 is fixedly connected to the positioning ring 36. A limit block 38 is fixedly installed on the outer side face of the bottom plate 5, and a fixed screw 36 is fixedly installed on the upper end face of the push frame 28. The pushing block 39 and the end of the torsion spring 37 away from the positioning ring 36 are fixedly connected to the base plate 5. The pushing block 39 and the screw rod 34 are in the same horizontal plane, and the diverter rod 8 is fixedly installed on the connecting plate 35. When the pushing frame 28 returns to its original position, the screw rod 34 with the rotation angle will cooperate with the positioning ring 36 through the reaction force of the torsion spring 37, so that the screw rod 34 returns to its original position, and the diverter rod 8 on the connecting plate 35 will be positioned by the limit block 38, so that the vertical state is restored to the horizontal state.

[0039] In this embodiment, when the entrance position of the gate body 1 is expanded, in order to ensure that people can queue up in an orderly manner, after the pushing frame 28 moves horizontally to the designated position, the pushing block 39 on the pushing frame 28 will push the screw rod 34, and the screw rod 34 will rotate by cooperating with the spiral hole 33. The diverter rod 8 on the connecting plate 35 will rotate ninety degrees and will change from a horizontal state to a vertical state. The diverter rod 8 in the vertical state is used to divide the guardrail entrance outside the gate into two channels, ensuring that people can queue up in an orderly manner to enter, effectively improving the use effect of the gate body 1.

[0040] Working principle:

[0041] When in use, the driving rod 10 is pushed by the first electric push rod 4, and the driving rod 10 will be tilted at an angle through the first connecting shaft 11. At the same time, the first electric push rod 4 will be synchronously tilted at an angle through the bracket plate 3, and the linkage rod 12 on the driving rod 10 will be synchronously rotated through the first connecting shaft 11. The driven rod 14 installed on the linkage rod 12 by the linkage shaft 19 will be angularly rotated around the second installation shaft 13. The U-shaped frame plate 16 installed by the first positioning shaft 15 and the second positioning shaft 17 will be driven by the driving rod 10, the driven rod 14, the linkage rod 12 and the transmission rod 18 to rotate at an angle, thereby realizing horizontal and vertical settings, and utilizing an expandable and retractable anti-crowding component to control the flow of people;

[0042] When there are many people and it is necessary to expand the entrance range of the gate body 1, the second electric push rod 27 drives the pushing frame 28 to move horizontally, and the first rotating plate 30 and the second rotating plate 31 in the two pushing grooves 29 will pass through the limit of the two positioning frames 32, so that the first expansion rod 6 and the second expansion rod 7 will pass through the limit of the rotating shaft 25 and the rotating hole 24, thereby expanding outward. Through the expanded first expansion rod 6 and the second expansion rod 7, the entrance to the guardrail outside the gate is expanded, which is suitable for high traffic periods and improves traffic efficiency;

[0043] When the entrance position of the gate body 1 is expanded, in order to ensure that people can queue up in an orderly manner, after the pushing frame 28 moves horizontally to the designated position, the pushing block 39 on the pushing frame 28 pushes the screw rod 34, and the screw rod 34 rotates by cooperating with the screw hole 33, and the diverter rod 8 on the connecting plate 35 rotates 90 degrees, from a horizontal state to a vertical state. The diverter rod 8 in the vertical state divides the guardrail entrance outside the gate into two channels, ensuring that people can queue up and enter in an orderly manner;

[0044] When the pushing frame 28 returns to its original position, the rotating screw rod 34 will cooperate with the positioning ring 36 through the reaction force of the torsion spring 37, so that the screw rod 34 returns to its original position, and the diverter rod 8 on the connecting plate 35 will be positioned by the limit block 38, so that the vertical state is restored to the horizontal state.

[0045] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0046] While the embodiments of the present invention have been shown and described, it will be apparent to those skilled in the art that various changes, modifications, substitutions, and alterations can be made to the embodiments without departing from the principles and spirit of the invention.

Claims

1. An anti-crowding rail transit gate, comprising two gate bodies (1), characterized in that: The side end surfaces of the two gate bodies (1) are provided with mounting grooves (2), the inner bottom of the mounting grooves (2) is fixedly mounted with a bracket plate (3), a first electric push rod (4) is rotatably mounted on the bracket plate (3), and an anti-crowding component is provided on the output rod of the first electric push rod (4); A bottom plate (5) is fixedly mounted on the inner side of the gate body (1), an extension assembly is provided below the bottom plate (5), and a first extension rod (6) and a second extension rod (7) are provided on the extension assembly. By cooperating with the first extension rod (6) and the second extension rod (7), the size of the entrance of the gate body (1) can be adjusted; A diversion assembly is provided on the side end surface of the bottom plate (5), and a diversion rod (8) is provided on the diversion assembly, so that crowded people can queue up in an orderly manner through the diversion rod (8); The anti-crowding component comprises a first mounting shaft (9) rotatably mounted in the mounting groove (2), a driving rod (10) rotatably mounted on the first mounting shaft (9), a first connecting shaft (11) rotatably mounted on the driving rod (10), a linkage rod (12) rotatably mounted on the first connecting shaft (11), a second mounting shaft (13) rotatably mounted on the inner side surface of the mounting groove (2), and a driven rod (14) rotatably mounted on the second mounting shaft (13); The expansion component includes a mounting frame (22) fixedly mounted on the U-shaped frame plate (16), a fixed rod (23) is rotatably mounted on the mounting frame (22), a rotating hole (24) is provided at the bottom end of the fixed rod (23), a rotating shaft (25) is rotatably mounted inside the rotating hole (24), the first expansion rod (6) and the second expansion rod (7) are respectively fixedly mounted on the two rotating shafts (25), a connecting rod (26) is fixedly mounted between the two fixed rods (23), a second electric push rod (27) is fixedly mounted on the connecting rod (26), an output rod of the second electric push rod (27) is fixedly mounted on a pushing frame (28), two symmetrically arranged pushing grooves (29) are provided on the pushing frame (28), a first rotating plate (30) and a second rotating plate (31) are rotatably mounted inside the two pushing grooves (29), and a positioning frame (32) is fixedly mounted on both the first expansion rod (6) and the second expansion rod (7); The diversion assembly includes a spiral hole (33) provided on the side end surface of the bottom plate (5), a spiral rod (34) is movably installed in the spiral hole (33), a connecting plate (35) is fixedly installed at one end of the spiral rod (34), a positioning ring (36) is fixedly installed on the spiral rod (34), a torsion spring (37) is fixedly connected to the positioning ring (36), a limiting block (38) is fixedly installed on the outer side surface of the bottom plate (5), and a pushing block (39) is fixedly installed on the upper end surface of the pushing frame (28).

2. The anti-crowding rail transit gate according to claim 1, characterized in that: A first positioning shaft (15) is fixedly mounted on one end of the driving rod (10) away from the first mounting shaft (9); a U-shaped frame plate (16) is rotatably mounted on the first positioning shaft (15); a second positioning shaft (17) is rotatably mounted inside the U-shaped frame plate (16); and a transmission rod (18) is fixedly mounted on the second positioning shaft (17).

3. The anti-crowding rail transit gate according to claim 2, characterized in that: The end of the linkage rod (12) away from the driving rod (10) is rotatably mounted on a linkage shaft (19), the end of the driven rod (14) away from the second mounting shaft (13) is rotatably mounted on the linkage shaft (19), the end of the transmission rod (18) away from the second positioning shaft (17) is rotatably mounted on the linkage shaft (19), the lower end surface of the driving rod (10) is fixedly mounted with a connecting frame (20), the output rod of the first electric push rod (4) is fixedly mounted with a connecting block (21), and the connecting block (21) is rotatably mounted inside the connecting frame (20).

4. The anti-crowding rail transit gate according to claim 1, characterized in that: One end of the first rotating plate (30) away from the pushing groove (29) is rotatably mounted in a positioning frame (32) on the first extension rod (6), and one end of the second rotating plate (31) away from the pushing groove (29) is rotatably mounted in a positioning frame (32) on the second extension rod (7). The first rotating plate (30) and the second rotating plate (31) are arranged obliquely.

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