Folding type digital pulley block demonstration structure

Abstract

The utility model discloses a folding type digital pulley block demonstration structure, which belongs to the technical field of pulley block demonstration, and comprises a U-shaped box body and L-shaped combined covers hinged at the two ends of the U-shaped box body, a U-shaped lifting frame is arranged on the inner side of the U-shaped box body, a lifting storage assembly is arranged between the U-shaped lifting frame and the L-shaped combined covers, a chute is arranged at the bottom end of the U-shaped box body, and the U-shaped lifting frame and the L-shaped combined covers are arranged in the chute. The inner side of the sliding groove is slidably connected with a hinged sliding block, the inner side of the hinged sliding block is rotatably connected with an overturning sliding rail block through a damping rotating shaft, the inner side of the overturning sliding rail block is slidably connected with a weight containing box, and the top end of the inner side of the U-shaped lifting frame is provided with a plurality of installation hanging rings used for hanging pulleys. Through the arrangement of the U-shaped lifting frame, the lifting storage assembly and the L-shaped combined cover, the U-shaped lifting frame can rise automatically when the L-shaped combined cover is opened, then the demonstration structure is unfolded automatically, and a teacher can use the demonstration structure conveniently.

Description

Technical Field

[0001] The utility model relates to the technical field of pulley block demonstrations, in particular to a folding digital pulley block demonstration structure. Background Technique

[0002] As an important part of the physics course, how to enable students to intuitively understand the functions of pulley blocks. Existing pulley block demonstration structures can achieve simple pulley block demonstrations, but the pulleys are independent of each other and cannot be connected for use, thus making it inconvenient to demonstrate complex pulley block structures, which limits the teacher's explanation of pulley courses.

[0003] In addition, for existing pulley block demonstration structures, when conducting demonstrations, it is inconvenient to read the extension length of the rope and to demonstrate the relationship between the work distance of the free end of the rope and the pulley block to students, which affects students' understanding of pulley blocks. Therefore, a folding digital pulley block demonstration structure is proposed to solve the above problems. Summary of the Utility Model

[0004] The purpose of the utility model is to solve the problem in the prior art that it is inconvenient to read the extension length of the rope in the pulley block demonstration structure, and it is inconvenient to demonstrate the relationship between the work distance of the free end of the rope and the pulley block to students, which affects students' understanding of pulley blocks, and to propose a folding digital pulley block demonstration structure.

[0005] In order to achieve the above purpose, the utility model adopts the following technical scheme:

[0006] A folding digital pulley block demonstration structure includes a U-shaped box body and L-shaped combined covers hinged at both ends of the U-shaped box body. A U-shaped lifting frame is arranged inside the U-shaped box body. An elevating and storing assembly is arranged between the U-shaped lifting frame and the L-shaped combined covers. A chute is opened at the bottom end of the U-shaped box body. An articulated sliding block is slidably connected inside the chute. The inside of the articulated sliding block is rotationally connected with a flipping slide rail block through a damping rotating shaft. A weight placing box is slidably connected inside the flipping slide rail block. A plurality of mounting hanging rings for hanging pulleys are arranged at the inner top end of the U-shaped lifting frame.

[0007] Preferably, an upper hanging hook connected with the mounting hanging ring is fixedly connected to the top end of the pulley, and a lower hanging hook for facilitating the connection between pulleys is fixedly connected to the bottom end of the pulley.

[0008] Preferably, a scale for displaying the downward movement distance of the free end of the rope is arranged on the surface of the flipping slide rail block, and a connection hanging ring connected with the free end of the rope is fixedly connected to the top end of the weight placing box.

[0009] Preferably, a magnetic rubber plate is arranged on the end face of the L-shaped combined cover, and connection protrusions are fixedly connected to both ends of the L-shaped combined cover.

[0010] Preferably, a sliding through groove is formed in the side wall of the U-shaped box body. The lifting and receiving assembly includes a guide wheel rotatably arranged on the side wall of the U-shaped box body and a limiting block slidably arranged on the side wall of the U-shaped box body. A limiting bolt is threadedly connected inside the limiting block.

[0011] Preferably, the limiting block is fixedly connected to the U-shaped lifting frame through a connecting block. One end of the connecting protrusion is fixedly connected with a traction rope, and the traction rope is fixedly connected to the limiting block after being guided by the guide wheel.

[0012] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0013] 1. In this solution, by providing a U-shaped lifting frame, a lifting and receiving assembly, and an L-shaped combined cover, when the L-shaped combined cover is opened, the U-shaped lifting frame can be automatically lifted, so that the demonstration structure can be automatically unfolded, which is convenient for teachers to use.

[0014] 2. In this solution, by providing an upper hook at the top of the pulley and a lower hook at the bottom of the pulley, the connection between the pulleys can be realized, which is convenient for demonstrating more complex pulley blocks.

[0015] 3. In this solution, by providing a flipping slide rail block and a weight placing box, it is convenient to measure the moving distance of the free end of the rope, which is convenient for students to intuitively understand the relationship between the work done by the free end of the rope and the pulley block. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a three-dimensional structural schematic diagram of a folding digital pulley block demonstration structure proposed by the present utility model after being unfolded;

[0017] Figure 2 is Figure 1 an enlarged structural schematic diagram at A in

[0018] Figure 3 is an assembly structural schematic diagram of a lifting and receiving assembly in a folding digital pulley block demonstration structure proposed by the present utility model;

[0019] Figure 4 is an assembly structural schematic diagram of a flipping slide rail block and a weight placing box in a folding digital pulley block demonstration structure proposed by the present utility model;

[0020] Figure 5 is a structural schematic diagram of a U-shaped lifting frame in a folding digital pulley block demonstration structure proposed by the present utility model;

[0021] Figure 6 is a three-dimensional structural schematic diagram of a folding digital pulley block demonstration structure proposed by the present utility model after being received.

[0022] In the figure: 1. U-shaped box body; 101. Slide groove; 2. L-shaped combined cover; 3. U-shaped lifting frame; 4. Traction rope; 5. Weight placement box; 6. Flipping slide rail block; 7. Hinged sliding block; 8. Connecting hanging ring; 9. Guide wheel; 10. Limit block; 11. Limit bolt; 12. Pulley; 13. Upper hanging hook; 14. Lower hanging hook; 15. Installation hanging ring. Specific implementation mode

[0023] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0024] Refer to Figures 1-6 , a folding digital pulley block demonstration structure, including a U-shaped box body 1 and an L-shaped combined cover 2 hinged at both ends of the U-shaped box body 1. A U-shaped lifting frame 3 is arranged inside the U-shaped box body 1. An elevating and storing component is arranged between the U-shaped lifting frame 3 and the L-shaped combined cover 2. A sliding through groove is opened on the side wall of the U-shaped box body 1. The elevating and storing component includes a guide wheel 9 rotatably arranged on the side wall of the U-shaped box body 1 and a limit block 10 slidably arranged on the side wall of the U-shaped box body 1. A limit bolt 11 is threadedly connected inside the limit block 10. The limit block 10 is fixedly connected to the U-shaped lifting frame 3 through a connecting block. One end of the connecting protrusion is fixedly connected with a traction rope 4. The traction rope 4 is guided through the guide wheel 9 and fixedly connected to the limit block 10.

[0025] It should be noted that when the L-shaped combined cover 2 is unfolded, the connecting protrusion will pull the limit block 10 to rise through the traction rope 4, thereby driving the U-shaped lifting frame 3 to move upward, so that the demonstration structure is automatically unfolded, which is convenient for teachers to use;

[0026] It is worth noting that: by cooperating the limit bolt 11 with the screw holes above the side wall of the U-shaped lifting frame 3 (the side wall of the U-shaped lifting frame 3 is respectively provided with screw holes near the top and bottom), the limiting function of the limit block 10 can be realized, and then the limiting function of the U-shaped lifting frame 3 can be realized, ensuring the stability of the demonstration structure during use.

[0027] It is worth noting that: when no heavy object is hung on the lower hanging hook 14 at the bottom of the pulley 12, the L-shaped combined cover 2 cannot be closed only by the gravity of the U-shaped lifting frame 3 and the pulley 12. The setting of the limit bolt 11 and the limit block 10 can prevent the L-shaped combined cover 2 from closing when a heavy object is hung on the pulley.

[0028] A chute 101 is provided at the bottom end of the U-shaped box body 1. An articulated sliding block 7 is slidably connected inside the chute 101. A turning rail block 6 is rotatably connected inside the articulated sliding block 7 through a damping rotating shaft. A weight placing box 5 is slidably connected inside the turning rail block 6. A plurality of mounting hanging rings 15 for hanging pulleys 12 are provided at the inner top end of the U-shaped lifting frame 3.

[0029] A scale for displaying the downward movement distance of the free end of the rope is provided on the surface of the turning rail block 6. A connecting hanging ring 8 connected to the free end of the rope is fixedly connected to the top end of the weight placing box 5.

[0030] It should be noted that: The weight placing box 5 is used to place weights. The turning rail block 6 can be rotated into the chute 101 for storage. At the same time, when in use, it is convenient to measure the work distance of the free end of the rope, which is convenient for students to intuitively understand the relationship between the work distance and the pulley 12 group.

[0031] It is worth noting that: The setting of the damping rotating shaft is convenient for playing a certain limiting role on the rotated turning rail block 6. The articulated sliding block 7 cooperates with the chute 101 to conveniently change the position of the turning rail block 6, which is convenient for the pulleys 12 at different positions.

[0032] An upper hanging hook 13 fixedly connected to the pulley 12 and hanging on the mounting hanging ring 15 is provided at the top end of the pulley 12. A lower hanging hook 14 for facilitating the connection between the pulleys 12 is fixedly connected to the bottom end of the pulley 12.

[0033] It should be noted that: The lower hanging hook 14 can be used to hang heavy objects, and at the same time, it is convenient to realize the connection between two pulleys, and further convenient to realize the combination of complex pulley groups.

[0034] A magnetic rubber plate is provided on the end face of the L-shaped combined cover 2. Connecting protrusions are fixedly connected to both ends of the L-shaped combined cover 2.

[0035] It should be noted that: The magnetic rubber plate can ensure the stability of the L-shaped combined cover 2 when it is closed.

[0036] When the present utility model is in use, first release the limit bolt 11 from the screw hole at the lower position of the U-shaped box body 1, and then rotate the L-shaped combined cover 2, so that the connecting protrusion pulls up the limit block 10 through the traction rope 4, and then pulls up the U-shaped lifting frame 3, so that the demonstration structure is unfolded. Then rotate the turning rail block 6 out of the chute 101 to a vertical state, which is convenient for the teacher to use;

[0037] By using the upper hanging hook 13 and the lower hanging hook 14 of the pulley, the connection function between the pulleys can be realized, which is convenient for forming a complex pulley 12 group structure and convenient for showing students more usage methods of the pulley;

[0038] By connecting the free end of the rope to the connecting hanging ring 8 at the top of the weight placing box 5, under the action of the weights, the weight placing box 5 pulls the free end of the rope to move downward. By flipping the scale on the surface of the sliding rail block 6, it is convenient to measure the working distance of the free end of the rope, which is convenient for students to intuitively understand the relationship between the working distance and the pulley 12 groups.

[0039] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution of the present invention and its inventive concept, makes equivalent substitutions or changes, and should be covered by the protection scope of the present invention.

Claims

1. A foldable digital pulley block demonstration structure, comprising a U-shaped box (1) and an L-shaped combination cover (2) hingedly arranged at both ends of the U-shaped box (1), characterized in that: A U-shaped lifting frame (3) is arranged inside the U-shaped box body (1), and a lifting storage assembly is arranged between the U-shaped lifting frame (3) and the L-shaped combination cover (2). A slide groove (101) is provided at the bottom end of the U-shaped box body (1), and a hinged sliding block (7) is slidably connected inside the slide groove (101). A flip slide block (6) is rotatably connected inside the hinged sliding block (7) through a damping shaft, and a weight placement box (5) is slidably connected inside the flip slide block (6). A plurality of mounting rings (15) for hanging pulleys (12) are arranged at the top end inside the U-shaped lifting frame (3).

2. A foldable digital pulley block demonstration structure according to claim 1, characterized in that: The top end of the pulley (12) is fixedly connected to an upper hook (13) that is hung on a mounting hanging ring (15), and the bottom end of the pulley (12) is fixedly connected to a lower hook (14) that facilitates the mutual connection between the pulleys (12).

3. A foldable digital pulley block demonstration structure according to claim 1, characterized in that: The surface of the flip slide block (6) is provided with a scale for displaying the downward movement distance of the free end of the rope, and the top end of the weight placement box (5) is fixedly connected with a connecting ring (8) connected to the free end of the rope.

4. A foldable digital pulley block demonstration structure according to claim 1, characterized in that: The end surface of the L-shaped combined cover (2) is provided with a magnetic rubber plate, and both ends of the L-shaped combined cover (2) are fixedly connected with connecting protrusions.

5. A foldable digital pulley block demonstration structure according to claim 4, characterized in that: The side wall of the U-shaped box (1) is provided with a sliding groove, and the lifting and storing assembly comprises a guide wheel (9) rotatably arranged on the side wall of the U-shaped box (1) and a limit block (10) slidably arranged on the side wall of the U-shaped box (1), and the internal thread of the limit block (10) is connected to the limit bolt (11).

6. A foldable digital pulley block demonstration structure according to claim 5, characterized in that: The limit block (10) is fixedly connected to the U-shaped lifting frame (3) via a connecting block, one end of the connecting protrusion is fixedly connected to a traction rope (4), and the traction rope (4) is guided by a guide wheel (9) and fixedly connected to the limit block (10).

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