Basement electromechanical pipeline lifting installation device

Abstract

The invention discloses a basement electromechanical pipeline lifting installation device, and relates to the technical field of electromechanical pipeline installation equipment, the basement electromechanical pipeline lifting installation device comprises a base and rollers arranged on the lower surface of the base, the upper surface of the base is provided with two supporting guide columns, the tops of the two supporting guide columns are connected through a cross beam, and the bottom of the cross beam is provided with a supporting frame; a rotatable guide wheel is arranged in the supporting frame, the middles of the two supporting guide columns are connected through an operation table, a driving motor is arranged on the operation table, the output end of the driving motor is connected with a winding wheel, a cable is wound on the winding wheel, and one end of the cable penetrates through the upper surface of the guide wheel and is connected with a containing platform used for containing a pipeline. Sliding guide wheels are arranged on the two sides of the containing platform, and sliding guide rails matched with the sliding guide wheels are arranged on the inner surfaces of the two supporting guide columns. The lifting platform has the effect of ensuring the balance and stability of the platform in the lifting process.

Description

Technical Field

[0001] The invention relates to the technical field of electromechanical pipeline installation equipment, and in particular to a basement electromechanical pipeline lifting and installation device. Background Art

[0002] With the continuous development of the construction industry, buildings are constantly changing in terms of function and appearance, and more and more considerations are being given to complexity and humanization. In order to meet various needs, there are more and more commercial buildings with larger floor heights and spans, and the complexity of the intertwined mechanical and electrical pipelines makes their installation more difficult.

[0003] At present, the industry generally adopts manual installation and manual or electric hoists for lifting and hoisting. Relatively speaking, scissor lifts are usually only used in large-scale overall lifting and hoisting projects due to their high cost. However, during manual lifting, the shaking of the cable often makes it difficult to ensure the balance and stability of the lifting platform, thereby increasing the risk of shaking or tilting. Summary of the invention

[0004] The present application provides a basement electromechanical pipeline lifting and installation device, which has the function of ensuring the balance and stability of the platform during the lifting process.

[0005] The present application provides a basement electromechanical pipeline lifting and installation device, which adopts the following technical solution: A lifting and installation device for electromechanical pipelines in a basement comprises a base and a roller arranged on the lower surface of the base, the upper surface of the base is provided with two supporting guide columns, the tops of the two supporting guide columns are connected by a cross beam, the bottom of the cross beam is provided with a support frame, a rotatable guide wheel is provided in the support frame, the middle parts of the two supporting guide columns are connected by an operating table, a driving motor is provided on the operating table, the output end of the driving motor is connected to a winding wheel, a cable is wound on the winding wheel, one end of the cable passes through the upper surface of the guide wheel and is connected to a placement platform for placing the pipeline, sliding guide wheels are provided on both sides of the placement platform, and the inner surfaces of the two supporting guide columns are provided with sliding guide rails matching the sliding guide wheels.

[0006] By adopting the above technical solution, the driving motor drives the cable to be retracted and released through the winding wheel, thereby realizing the lifting and lowering control of the placement platform; the pulling of the cable causes the placement platform to move accordingly; and the supporting guide column and the sliding guide rail provide a stable guide for the placement platform, ensuring the balance and stability of the platform during the lifting process and avoiding the risk of shaking or tilting; the automatic lifting device reduces the safety hazards of workers when working at high altitudes and reduces the probability of accidents.

[0007] Preferably, a positioning block is provided on the upper surface of the placement platform, and a plurality of slots matching the lower surface of the pipeline are provided on the upper surface of the positioning block, and the cross section of the slots is an arc-shaped structure.

[0008] By adopting the above technical solution, the arc-shaped slot allows the pipe to be accurately placed and fixed on the placement platform; the arc-shaped slot matches the lower surface of the pipe, which can effectively fix the pipe firmly in the specified position to avoid sliding or loosening during operation.

[0009] Preferably, at least two positioning blocks are provided, and two adjacent positioning blocks are arranged in parallel.

[0010] By adopting the above technical solution, the weight of the pipeline can be effectively dispersed through multiple supporting points, reducing the local pressure caused by a single supporting point and avoiding structural damage.

[0011] Preferably, one end of the positioning block is rotatably connected to a fastening plate via a hinge, the lower surface of the fastening plate is provided with a fastening groove matching the upper surface of the pipe, the cross-section of the fastening groove is an arc-shaped structure, and the fastening groove and the card slot are matched with each other.

[0012] By adopting the above technical solution, the arc-shaped buckling groove allows the buckling plate to better adapt to the shape of the pipeline, providing a larger contact area, thereby improving the reliability and strength of the contact.

[0013] Preferably, a lock body is provided at the other end of the positioning block, and a lock head matching the lock body is provided on the fastening plate.

[0014] By adopting the above technical solution, a fixing effect is established between the positioning block and the locking plate, thereby playing a role in firmly fixing the pipeline.

[0015] Preferably, an ejection area is formed between two adjacent positioning blocks, and a driving component and a movably arranged material guide plate are provided inside the ejection area. The driving component is used to drive the material guide plate so that the material guide plate performs an elliptical intermittent reciprocating motion in the ejection area. The intermittent reciprocating motion of the material guide plate in the longitudinal and horizontal directions is used to eject the pipe on the positioning block from the slot.

[0016] By adopting the above technical solution, the ejection area is the space between the two positioning blocks, and the combination of the internal driving assembly and the guide plate enables this space to effectively carry out pipeline transportation work; the guide plate moves in the ejection area through the driving assembly to form intermittent reciprocating motion; the guide plate performs intermittent reciprocating motion in the longitudinal and horizontal directions, and can exert a certain force on the pipeline on the positioning block within a certain period, thereby pushing the pipeline out of the slot; compared with the traditional single motion mode, it can better adapt to different pipeline characteristics and improve ejection efficiency.

[0017] Preferably, a plurality of guide blocks are arranged at equal intervals on the guide plate, and ejection positioning grooves are formed between adjacent guide blocks.

[0018] By adopting the above technical solution, the design of the guide block is mainly to effectively guide and fix the pipe to be processed when the guide plate moves; the setting of the ejection positioning groove is intended to provide a clear guide path for the pipe; when the guide plate reciprocates, the positioning groove enables the pipe to be accurately ejected, thereby avoiding jamming or damage caused by incorrect positioning.

[0019] Preferably, a downwardly inclined slope is provided on one side of the material guide block.

[0020] By adopting the above technical solution, the downward inclined surface utilizes the natural effect of gravity to cause the pipe to slide along the inclined surface; this design enables the pipe to move more smoothly by relying on its own gravity, thereby reducing the need for human intervention.

[0021] Preferably, two driving assemblies are provided and are symmetrically arranged about the central axis of the guide plate, so as to stably drive the guide plate.

[0022] By adopting the above technical solution, two driving components are provided to stably drive the material guide plate.

[0023] Preferably, the driving assembly includes a first connecting seat, a second connecting seat, a Y-shaped rod and a driving motor, the output end of the driving motor passes through the first connecting seat and is connected to the first connecting rod, the second connecting seat is rotatably connected to the second connecting rod, the Y-shaped rod is provided with three free ends, the first free end of the Y-shaped rod is hinged to the first connecting rod, the second free end of the Y-shaped rod is hinged to the second connecting rod, the third free end of the Y-shaped rod is rotatably connected to the third connecting seat, and the top of the third connecting seat is fixedly connected to the lower surface of the material guide plate.

[0024] By adopting the above technical solution, the first connecting rod is driven by the motor to rotate around the output end of the driving motor, and drives the Y-shaped rod to be linked, and under the hinged limit between the second connecting rod and the second connecting seat, the guide plate performs an elliptical intermittent reciprocating motion in the ejection area, which can achieve efficient and accurate pipeline transmission or processing; the elliptical reciprocating motion design can enable the guide plate to better push, transmit or distribute the pipeline during movement, thereby improving work efficiency.

[0025] In summary, this application has the following beneficial effects: 1. The driving motor drives the cable to be retracted and released through the winding wheel, thereby realizing the lifting and lowering control of the placement platform; the pulling of the cable causes the placement platform to move accordingly; and the supporting guide column and sliding guide rail provide a stable guide for the placement platform, ensuring the balance and stability of the platform during the lifting process, avoiding the risk of shaking or tilting; the automatic lifting device reduces the safety hazards of workers when working at high altitudes and reduces the probability of accidents.

[0026] 2. By driving the motor, the first connecting rod rotates around the output end of the driving motor, and drives the Y-shaped rod to move in conjunction. Under the hinged limit between the second connecting rod and the second connecting seat, the guide plate performs an elliptical intermittent reciprocating motion in the ejection area, which can achieve efficient and accurate pipeline transmission or processing; the elliptical reciprocating motion design can enable the guide plate to better push, transmit or distribute the pipeline during movement, thereby improving work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 Schematic diagram of the overall structure of the lifting installation device in this embodiment; Figure 2 is an exploded view between the positioning block and the fastening plate in this embodiment; Figure 3 Schematic diagram of the overall structure of the positioning block in this embodiment; Figure 4 is a schematic diagram of the internal structure of the drive assembly in this embodiment; Explanation of the accompanying drawings: 1. base; 2. roller; 3. support guide column; 4. crossbeam; 5. support frame; 6. guide wheel; 7. drive motor; 8. winding wheel; 9. cable; 10. placement platform; 11. sliding guide wheel; 12. sliding guide rail; 13. positioning block; 14. slot; 15. fastening plate; 16. buckling slot; 17. lock body; 18. lock head; 19. guide plate; 20. drive assembly; 2001. first connecting seat; 2002. second connecting seat; 2003. Y-shaped rod; 2004. drive motor; 2005. first connecting rod; 2006. second connecting rod; 2007. third connecting seat; 21. guide block; 22. positioning slot; 23. inclined plane. DETAILED DESCRIPTION

[0028] The present application is further described in detail below in conjunction with the accompanying drawings. It is necessary to point out here that the following specific implementation methods are only used to further illustrate the present application and cannot be understood as limiting the scope of protection of the present application. Technical personnel in this field can make some non-essential improvements and adjustments to the present application based on the above application content. Example

[0029] The present invention discloses a lifting and installing device for electromechanical pipelines in a basement, such as Figure 1As shown, it includes a base 1 and a roller 2 arranged on the lower surface of the base 1, two supporting guide columns 3 are fixedly installed on the upper surface of the base 1, the tops of the two supporting guide columns 3 are fixedly connected by a cross beam 4, a support frame 5 is provided at the bottom of the cross beam 4, a rotatable guide wheel 6 is provided in the support frame 5, the middle parts of the two supporting guide columns 3 are fixedly connected by an operating table, a driving motor 7 is fixedly installed on the operating table, the output end of the driving motor 7 is connected to a winding wheel 8, a cable 9 is wound on the winding wheel 8, one end of the cable 9 passes through the upper surface of the guide wheel 6 and is connected to a placement platform 10 for placing pipes, sliding guide wheels 11 are provided on both sides of the placement platform 10, and the inner surfaces of the two supporting guide columns 3 are provided with sliding guide rails 12 matching the sliding guide wheels 11.

[0030] like Figure 1 As shown, the driving motor 7 drives the cable 9 to be retracted and released through the winding wheel 8, thereby realizing the lifting and lowering control of the placement platform 10; the pulling of the cable 9 causes the placement platform 10 to move accordingly; and the supporting guide column 3 and the sliding guide rail 12 provide a stable guide for the placement platform 10, ensuring the balance and stability of the platform during the lifting process, avoiding the risk of shaking or tilting; the automatic lifting device reduces the safety hazards of workers when working at high altitudes, and reduces the probability of accidents; the use of this device in the basement is reasonably designed, can effectively utilize limited space, and is suitable for various complex underground environments.

[0031] like Figure 2 As shown, a positioning block 13 is fixedly installed on the upper surface of the placement platform 10, and a plurality of slots 14 matching the lower surface of the pipe are provided on the upper surface of the positioning block 13. The design of the slots 14 enables the pipe to be accurately placed and fixed on the placement platform 10; the arc-shaped slots 14 match the lower surface of the pipe, and can effectively fix the pipe firmly in the specified position to avoid sliding or loosening during operation; the cross-section of the slots 14 is an arc-shaped structure; the arc-shaped structure can better adapt to the curve of the pipe. This design effectively disperses the force on the pipe during installation and transportation, reduces the pressure concentrated on a certain point, and helps to protect the pipe.

[0032] like Figure 2 As shown, the matching design of the card slot 14 can ensure that the position of the pipeline on the placement platform 10 is accurate, improve the accuracy during installation, and reduce subsequent problems caused by errors.

[0033] like Figure 2As shown, there are three positioning blocks 13, which are arranged in parallel with each other. The parallel arrangement of the three positioning blocks 13 can ensure that the force on the pipeline on the placement platform 10 is more uniform; through multiple support points, the weight of the pipeline can be effectively dispersed, reducing the local pressure caused by a single support point, and avoiding structural damage; the three positioning blocks 13 provide better stability; when the pipeline is subjected to external force in a certain direction, due to the three support points, the pipeline is not easy to tilt or move, thereby maintaining its position stable; and setting three parallel positioning blocks 13 can effectively reduce the shaking of the pipeline during operation or transportation; even on a vibrating or uneven surface, the pipeline can remain stable, reducing the risk of damage.

[0034] like Figure 2 As shown, one end of the positioning block 13 is rotatably connected to a fastening plate 15 through a hinge. The flipping between the fastening plate 15 and the positioning block 13 can be controlled by the rotatable hinge. By flipping the fastening plate 15, the card slot 14 on the positioning block 13 is exposed, which is convenient for the stacking of the pipeline. By covering the fastening plate 15, the pipeline is limited. The lower surface of the fastening plate 15 is provided with a fastening groove 16 matching the upper surface of the pipeline. The cross-section of the fastening groove 16 is an arc-shaped structure, and the fastening groove 16 and the card slot 14 are matched. The arc-shaped fastening groove 16 allows the fastening plate 15 to better adapt to the shape of the pipeline and provide a larger contact area, thereby improving the reliability and strength of the contact. The arc shape can also reduce stress concentration and avoid damage caused by sharp edges.

[0035] like Figure 2 As shown, a lock body 17 is provided at the other end of the positioning block 13, and a lock head 18 matching the lock body 17 is provided on the fastening plate 15, which is used to establish a fixing effect between the positioning block 13 and the locking plate, thereby firmly fixing the pipeline.

[0036] like Figure 2 As shown, a baffle is provided on one side surface of the fastening plate 15. When the fastening plate 15 and the positioning block 13 are in a closed state, the fastening plate 15 is located on the side of the opening of the slot 14 of the positioning block 13, which can effectively prevent the pipeline from being displaced along the axial direction of the slot 14.

[0037] like Figure 3 and Figure 4 As shown, an ejection area is formed between two adjacent positioning blocks 13, and a driving component 20 and a movably arranged material guide plate 19 are provided inside the ejection area. The driving component 20 is used to drive the material guide plate 19 so that the material guide plate 19 performs an elliptical intermittent reciprocating motion in the ejection area. The intermittent reciprocating motion of the material guide plate 19 in the longitudinal and horizontal directions is used to eject the pipe on the positioning block 13 from the slot 14.

[0038] like Figure 3and Figure 4 As shown, the ejection area is the space between the two positioning blocks 13. The combination of the internal drive assembly 20 and the guide plate 19 enables this space to effectively carry out pipeline transportation work; the guide plate 19 moves in the ejection area through the drive assembly 20 to form intermittent reciprocating motion; the guide plate 19 performs intermittent reciprocating motion in the longitudinal and horizontal directions, and can apply a certain force to the pipeline on the positioning block 13 within a certain period, thereby pushing the pipeline out of the slot 14; compared with the traditional single motion mode, it can better adapt to different pipeline characteristics and improve ejection efficiency.

[0039] like Figure 4 As shown, a plurality of guide blocks 21 are provided at equal intervals on the guide plate 19, and ejection positioning grooves 22 are formed between adjacent guide blocks 21. The design of the guide blocks 21 is mainly to effectively guide and fix the pipes to be processed when the guide plate 19 moves; the setting of the ejection positioning grooves 22 is intended to provide a clear guiding path for the pipes; when the guide plate 19 reciprocates, the positioning grooves 22 enable the pipes to be accurately ejected, thereby avoiding jamming or damage caused by incorrect positioning; the combination of the guide blocks 21 and the positioning grooves 22, through relatively fixed spacing and structural design, enables the guide plate 19 to push all pipes in a unified manner during the ejection process and ensure that they are effectively separated from the card slots 14.

[0040] like Figure 4 As shown, a downwardly inclined slope 23 is provided on one side of the guide block 21. The downwardly inclined slope 23 utilizes the natural effect of gravity to cause the pipe to slide along the slope 23. This design enables the pipe to move more smoothly by relying on its own gravity, thereby reducing the need for human intervention. With the help of the pipe, the pipe can pass through the guide block 21 faster, reducing the stagnation time of the pipe during the guiding process, thereby improving the overall work efficiency.

[0041] like Figure 4 As shown, the design of the inclined surface 23 can prevent the pipeline from getting stuck during the material guiding process, ensure smooth transmission of the pipeline, and reduce the risk of production stagnation.

[0042] like Figure 4 As shown, two drive assemblies 20 are provided and are symmetrically arranged about the central axis of the guide plate 19 for stably driving the guide plate 19 .

[0043] like Figure 4As shown, the driving assembly 20 includes a first connecting seat 2001, a second connecting seat 2002, a Y-shaped rod 2003 and a driving motor 2004, the output end of the driving motor 2004 passes through the first connecting seat 2001 and is connected to the first connecting rod 2005, the second connecting seat 2002 is rotatably connected to the second connecting rod 2006, the Y-shaped rod 2003 is provided with three free ends, the first free end of the Y-shaped rod 2003 is hinged to the first connecting rod 2005, the second free end of the Y-shaped rod 2003 is hinged to the second connecting rod 2006, the third free end of the Y-shaped rod 2003 is rotatably connected to the third connecting seat 2007, and the top of the third connecting seat 2007 is fixedly connected to the lower surface of the guide plate 19.

[0044] The driving motor 2004 drives the first connecting rod 2005 to rotate through its output end, and the circular motion of the first connecting rod 2005 provides a basis for connection and transmission for the Y-shaped rod 2003; the Y-shaped rod 2003 is connected to the first connecting rod 2005 and the second connecting rod 2006 by a hinged manner, so that it can rotate flexibly; when the first connecting rod 2005 rotates, the first free end and the second free end of the Y-shaped rod 2003 will also move accordingly, and under the hinged action of the second connecting rod 2006 and the second connecting seat 2002, the movement of the Y-shaped rod 2003 is limited to a specific trajectory; this design enables the guide plate 19 to perform elliptical intermittent reciprocating motion only within a certain range during operation, which can achieve efficient and accurate pipeline transmission or processing; the elliptical reciprocating motion design enables the guide plate 19 to better push, transmit or distribute the pipeline during movement, thereby improving work efficiency.

[0045] Working principle: Before use, the user needs to move the lifting installation device to the target installation position through the roller 2. Then, the user needs to open the fastening plate 15 to expose the card slot 14 on the positioning block 13, and then put the pipeline positioning code into the card slot 14. Then, the user flips the fastening plate 15 to a closed state with the positioning block 13, and fixes the pipeline in the card slot 14 of the positioning block 13 through the locking mechanism between the lock body 17 and the lock head 18.

[0046] During use, the user first starts the power supply of the drive motor 7. The drive motor 7 realizes the retraction and release of the cable 9 through the winding wheel 8, thereby controlling the lifting and lowering of the placement platform 10. The pulling of the cable 9 causes the placement platform 10 to move accordingly, while the support guide column 3 and the sliding guide rail 12 provide a stable guide for the placement platform 10, ensuring that it maintains balance during the lifting process and avoiding the risk of shaking or tilting. In addition, the automatic lifting device effectively reduces the safety hazards of workers when working at high altitudes, thereby reducing the probability of accidents.

[0047] During installation, the user should release the connection between the lock head 18 and the lock body 17, and turn on the power supply of the drive motor 2004. The drive motor 2004 drives the first connecting rod 2005 to rotate through its output end, thereby providing a connection and transmission basis for the Y-shaped rod 2003. The Y-shaped rod 2003 is connected to the first connecting rod 2005 and the second connecting rod 2006 in an articulated manner, giving it a flexible rotation ability. When the first connecting rod 2005 rotates, the first free end and the second free end of the Y-shaped rod 2003 will also move accordingly. Under the articulation of the second connecting rod 2006 and the second connection seat 2002, the movement of the Y-shaped rod 2003 is limited to a specific trajectory. This makes the guide plate 19 only perform an elliptical intermittent reciprocating motion within a specified range during operation, thereby applying a certain force to the pipeline on the positioning block 13 in the longitudinal and horizontal directions, prompting the pipeline to be pushed out of the slot 14, and realizing the unloading function.

[0048] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A lifting and installation device for electromechanical pipelines in a basement, comprising a base (1) and a roller (2) arranged on the lower surface of the base (1), characterized in that: Two support guide columns (3) are provided on the upper surface of the base (1), the tops of the two support guide columns (3) are connected by a crossbeam (4), the bottom of the crossbeam (4) is provided with a support frame (5), a rotatable guide wheel (6) is provided in the support frame (5), the middle parts of the two support guide columns (3) are connected by an operating table, a drive motor (7) is provided on the operating table, the output end of the drive motor (7) is connected to a winding wheel (8), a cable (9) is wound on the winding wheel (8), one end of the cable (9) passes through the upper surface of the guide wheel (6) and is connected to a placement platform (10) for placing a pipeline, sliding guide wheels (11) are provided on both sides of the placement platform (10), and sliding guide rails (12) matching the sliding guide wheels (11) are provided on the inner surfaces of the two support guide columns (3).

2. The basement electromechanical pipeline lifting and installation device according to claim 1 is characterized in that: The upper surface of the placement platform (10) is provided with a positioning block (13), and the upper surface of the positioning block (13) is provided with a plurality of slots (14) matching the lower surface of the pipeline, and the cross section of the slots (14) is an arc-shaped structure.

3. The basement electromechanical pipeline lifting and installation device according to claim 2 is characterized in that: At least two positioning blocks (13) are provided, and two adjacent positioning blocks (13) are arranged in parallel.

4. The basement electromechanical pipeline lifting and installation device according to claim 3 is characterized in that: One end of the positioning block (13) is rotatably connected to a fastening plate (15) via a hinge, and a lower surface of the fastening plate (15) is provided with a fastening groove (16) matching the upper surface of the pipeline, the cross-section of the fastening groove (16) is an arc-shaped structure, and the fastening groove (16) and the clamping groove (14) are matched.

5. The basement electromechanical pipeline lifting and installation device according to claim 4 is characterized in that: A lock body (17) is provided at the other end of the positioning block (13), and a lock head (18) matching the lock body (17) is provided on the fastening plate (15).

6. The basement electromechanical pipeline lifting and installation device according to claim 5 is characterized in that: An ejection area is formed between two adjacent positioning blocks (13), and a driving assembly (20) and a movably arranged material guide plate (19) are provided inside the ejection area. The driving assembly (20) is used to drive the material guide plate (19) so that the material guide plate (19) performs an elliptical intermittent reciprocating motion in the ejection area. The intermittent reciprocating motion of the material guide plate (19) in the longitudinal and horizontal directions is used to eject the pipe on the positioning block (13) out of the slot (14).

7. The basement electromechanical pipeline lifting and installation device according to claim 6 is characterized by: A plurality of material guide blocks (21) are arranged at equal intervals on the material guide plate (19), and ejection positioning grooves (22) are formed between adjacent material guide blocks (21).

8. The basement electromechanical pipeline lifting and installation device according to claim 7 is characterized in that: A downwardly inclined inclined surface (23) is provided on one side of the material guide block (21).

9. The basement electromechanical pipeline lifting and installation device according to claim 6 is characterized by: Two drive assemblies (20) are provided and are symmetrically arranged about the central axis of the material guide plate (19), and are used to stably drive the material guide plate (19).

10. The basement electromechanical pipeline lifting and installation device according to claim 9 is characterized in that: The driving assembly (20) comprises a first connecting seat (2001), a second connecting seat (2002), a Y-shaped rod (2003) and a driving motor (2004); the output end of the driving motor (2004) passes through the first connecting seat (2001) and is connected to a first connecting rod (2005); the second connecting seat (2002) is rotatably connected to a second connecting rod (2006); three free ends are provided on the Y-shaped rod (2003); the first free end of the Y-shaped rod (2003) is hinged to the first connecting rod (2005); the second free end of the Y-shaped rod (2003) is hinged to the second connecting rod (2006); the third free end of the Y-shaped rod (2003) is rotatably connected to a third connecting seat (2007); the top of the third connecting seat (2007) is fixedly connected to the lower surface of the material guide plate (19).

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