Stone throwing machine

Abstract

The invention discloses a stone casting machine. The machine comprises a support; the throwing rod is provided with a through hole, a connecting part and a storage part, the connecting part is rotationally connected with the support, the storage part is arranged at the first end of the throwing rod, and the distance between the connecting part and the first end of the throwing rod is larger than the distance between the connecting part and the second end of the throwing rod; the through hole is positioned between the connecting part and the first end of the throwing rod; the two ends of the elastic reset structure are connected with the second end of the throwing rod and the support respectively; the winch is arranged on the bracket; the driving motor is arranged on the bracket; the rope penetrates through the through hole, the first end of the rope is wound on the winch, and the second end of the rope is arranged on the driving motor. The length of the rope is adjusted by controlling the rotating angle of the winch, and then the releasing angle and the throwing accuracy of the throwing rod are controlled.

Description

Technical Field

[0001] The present invention relates to the technical field of toys, in particular to a trebuchet. Background Art

[0002] In the teaching of "Tools and Machinery" in the primary school science textbook, one of the goals is to enable students to understand the basic principles of common tools and machinery in daily life, such as levers, axles, pulleys and inclined planes, and to understand the wide application of these principles in real life. In particular, through the exploration activities combined with common tools and experimental equipment, students can deeply understand how these mechanical principles are closely connected with daily life and play an important role in life. The core of the teaching activity design is to let students experience and operate by themselves, so that they can master the characteristics and actual functions of different tools and machinery, and at the same time stimulate their interest and curiosity in science and technology.

[0003] In the actual teaching process, students' learning effects may be limited by some factors. For example, although most students have developed a strong interest in science classes and have acquired preliminary inquiry capabilities after several years of science learning, some students will encounter difficulties in conducting inquiry activities due to some restrictions. These difficulties may come from insufficient physical conditions, such as insufficient experimental equipment, or differences in school and family education resources, which make it impossible for some students to carry out inquiry activities smoothly. Students' knowledge is also limited to a certain extent, which directly affects the formation of their scientific literacy, especially in actual operations and experiments, students fail to fully contact and understand more complex mechanical principles. The trebuchet teaching aid can concretize the boring lever principle and energy conversion theory, stimulate students' interest in learning, and form a good atmosphere for scientific and technological exploration.

[0004] The traditional traction trebuchet uses a human traction rope to operate the throwing rod, and the strength and projection angle of the stone cannot be controlled. Based on the traditional trebuchet, the trebuchet teaching mold developed by them is difficult to adjust the release angle and projection accuracy, which is not conducive to the single variable angle experiment in trebuchet teaching. Summary of the invention

[0005] The technical problem to be solved by the present invention is that it is difficult to adjust the release angle and the projection accuracy of a trebuchet teaching mold.

[0006] In order to solve the above technical problems, the present invention provides a trebuchet, including: a bracket; a throwing rod, the throwing rod is provided with a through hole, a connecting part and a placing part, the connecting part is rotatably connected to the bracket, the first end of the throwing rod is provided with the placing part, the distance between the connecting part and the first end of the throwing rod is greater than the distance between the connecting part and the second end of the throwing rod, and the through hole is located between the connecting part and the first end of the throwing rod; an elastic reset structure, the two ends of the elastic reset structure are respectively connected to the second end of the throwing rod and the bracket; a winch, the winch is arranged on the bracket, the winch is provided with a dial, and the dial rotates coaxially with the winch; a driving motor, the driving motor is arranged on the bracket; a rope, the rope passes through the through hole, the first end of the rope is wound around the winch, and the second end of the rope is arranged on the output end of the driving motor.

[0007] Furthermore, the driving motor includes a motor body and a driving disc arranged on an output end of the motor body, and the rope is arranged on the driving disc.

[0008] Furthermore, the scale plate and the driving plate are respectively located on two sides of the bracket.

[0009] Furthermore, the scale plate is provided with a first long rod and a second long rod, two ends of the first long rod are rotatably connected to the scale plate and the first end of the second long rod respectively, and the rope is arranged on the second end of the second long rod.

[0010] Furthermore, the driving disk is provided with a plurality of mounting holes, and the plurality of mounting holes are distributed in a circular array along the rotating axis of the driving disk, and the first long rod is inserted into one of the mounting holes.

[0011] Furthermore, the bracket is provided with a ratchet column, the dial is provided with a ratchet tooth matching the ratchet column, the first end of the ratchet tooth is meshed with the ratchet column, and the second end of the ratchet tooth is rotatably connected to the bracket.

[0012] Furthermore, the bracket is also provided with a rotating shaft, the rotating shaft is parallel to the rotating shaft of the winch, and the rotating shaft is meshed with the ratchet.

[0013] Furthermore, the capstan is also provided with an adjusting wheel, the adjusting wheel rotates coaxially with the scale plate, and the adjusting wheel is located at one end of the capstan.

[0014] Furthermore, the adjusting wheel is provided with a plurality of columns, and the plurality of columns are arranged at equal distances along the outer wheel surface of the adjusting wheel.

[0015] Furthermore, the throwing rod, the winch and the bracket are all assembled with building blocks, and the driving motor is snap-connected to the bracket.

[0016] Compared with the prior art, the catapult of the embodiment of the present invention has the following beneficial effects: the length of the rope is adjusted by rotating the capstan, so that the rope passing through the through hole pulls the throwing rod to rotate, thereby controlling the release angle of the throwing rod, and the adjustment amount of the capstan is recorded by the dial, thereby controlling the release angle variable in a single manner. It is only necessary to control the rotation angle of the capstan to adjust the length of the rope, thereby controlling the release angle of the throwing rod and the projection accuracy, which is helpful for conducting variable control experiments in catapult teaching and allows students to better understand the principles of mechanical science. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a first stereoscopic view of the trebuchet provided by the present invention;

[0018] Figure 2 is a front view of the trebuchet provided by the present invention;

[0019] Figure 3 It is a left side view of the trebuchet provided by the present invention;

[0020] Figure 4 It is a second stereoscopic view of the trebuchet provided by the present invention.

[0021] The corresponding relationship between the reference numerals and the component names is as follows:

[0022] 1. Bracket; 11. Ratchet column; 12. Rotating shaft; 2. Throwing rod; 21. Through hole; 22. Connecting part; 23. Storage part; 3. Elastic reset structure; 4. Winch; 41. Dial; 411. Ratchet; 42. Adjusting wheel; 5. Driving motor; 51. Motor body; 52. Driving disk; 521. First long rod; 522. Second long rod; 501. Mounting hole; 6. Rope. DETAILED DESCRIPTION

[0023] The following is a description of exemplary embodiments of the present invention in conjunction with the accompanying drawings, including various details of the embodiments of the present invention to facilitate understanding, which should be considered as merely exemplary. Therefore, it should be appreciated by those of ordinary skill in the art that various changes and modifications may be made to the embodiments described herein without departing from the scope of the present invention. Similarly, for clarity and conciseness, descriptions of well-known functions and structures are omitted in the following description.

[0024] like Figures 1 to 4 As shown, an embodiment of the present invention discloses a trebuchet, comprising: a bracket 1, a throwing rod 2, an elastic reset structure 3, a winch 4, a driving motor 5 and a rope 6.

[0025] Among them, the throwing rod 2 is provided with a through hole 21, a connecting part 22 and a placing part 23, the connecting part 22 is rotatably connected to the bracket 1, the first end of the throwing rod 2 is provided with the placing part 23, the distance between the connecting part 22 and the first end of the throwing rod 2 is greater than the distance between the connecting part 22 and the second end of the throwing rod 2, and the through hole 21 is located between the connecting part 22 and the first end of the throwing rod 2; the two ends of the elastic reset structure 3 are respectively connected to the second end of the throwing rod 2 and the bracket 1; the winch 4 is arranged on the bracket 1, and the winch 4 is provided with a dial 41, and the dial 41 rotates coaxially with the winch 4; the driving motor 5 is arranged on the bracket 1; the rope 6 passes through the through hole 21, the first end of the rope 6 is wound around the winch 4, and the second end of the rope 6 is arranged on the output end of the driving motor 5.

[0026] The trebuchet of the present application adjusts the length of the rope 6 by rotating the capstan 4, so that the rope 6 passing through the through hole 21 pulls the throwing rod 2 to rotate, thereby controlling the release angle of the throwing rod 2. After adjusting the capstan 4, the driving motor 5 drives the rope 6 to drag downward, further driving the throwing rod 2 to rotate, and plays a role in accumulating power for the elastic reset structure 3. When the driving motor 5 rotates to a certain angle, the throwing rod 2 is released, and the elastic reset structure 3 pulls the throwing rod 2, thereby driving the throwing object on the storage part 23 to be thrown forward, and the adjustment amount of the capstan 4 is recorded by the dial 41, thereby controlling the release angle variable in a single manner, and only the angle of rotation of the capstan 4 needs to be controlled to adjust the length of the rope 6, thereby controlling the release angle and projection accuracy of the throwing rod 2, which is helpful for variable control experiments in trebuchet teaching, so that students can better understand the principles of mechanical science. It should be noted that the trebuchet of the present application can be used as a trebuchet teaching aid for student teaching.

[0027] By rotating the winch 4 and driving the rope 6 to extend and retract, the release angle of the throwing rod 2 can be adjusted. Figure 1 As shown, by rotating the capstan 4 clockwise and increasing the length of the rope 6, the release angle of the throwing rod 2 can be reduced. Similarly, by rotating the capstan 4, its torque can be adjusted. By rotating the capstan 4 counterclockwise and reducing the length of the rope 6, the initial throwing torque of the trebuchet can be increased, and the release angle of the throwing rod 2 can be increased. Comprehensive adjustment can adjust the projection accuracy of the entire trebuchet. After adjusting the capstan 4, the driving motor 5 rotates, driving the driving disk 52 to rotate together, thereby driving the rope 6 to drag downward, further driving the throwing rod 2 to rotate counterclockwise, and playing a power storage role. After the driving motor 5 rotates to a certain angle, it will be released under a force in the opposite direction of the throwing rod 2, and the throwing rod 2 will be released at the same time, driving the throwing object to be thrown forward, completing an action cycle. On the basis of this teaching mold, through a single control variable, only by controlling the angle of rotation of the capstan 4, the expansion and contraction of the rope 6 is driven, and then the release angle and torque of the throwing rod 2 are controlled, thereby realizing linear adjustment of the release angle, controlling its projection accuracy, and then adjusting the striking distance and realizing precise striking.

[0028] Through the capstan 4 and the dial 41, the trebuchet can accurately adjust the throwing angle. Teachers and students can accurately control the rotation of the capstan 4 as needed, so as to adjust the release angle of the throwing rod 2, which significantly improves the accuracy and adjustability of the experiment, making the variable control in the mechanical experiment more simple and intuitive. The introduction of the drive motor 5 and the elastic reset structure 3 simplifies the operation process of the traditional trebuchet. Driven by the motor, the pulling force of the elastic reset structure 3 can be accurately controlled, and students only need to operate the motor and the capstan 4 to adjust the release angle of the throwing rod 2. Not only does it improve the experimental efficiency, but it also reduces the complexity of manual operation, allowing students to focus more on the exploration of physical principles. The trebuchet of the present invention can help students deeply understand multiple important concepts in mechanics, including the principle of levers, elastic mechanics, and energy conversion. By adjusting the angle and recording the throwing effect, students can intuitively observe the influence of different parameters on the projection results, so as to better master theoretical knowledge.

[0029] By setting the elastic reset structure 3, the throwing rod 2 can quickly return to its original position after being released. The operational stability of the trebuchet is improved, and students are also helped to understand the energy conversion and storage process, as well as the elastic mechanics principle in the mechanical system. The use of the drive motor 5 makes the trebuchet more automated, and the motor can accurately adjust the tension of the rope 6 and push the throwing rod 2, reducing the human operation error. The introduction of the motor also makes the experimental process more stable and continuous, which helps students to conduct multiple experiments and compare and analyze the results under different experimental conditions. The trebuchet of the present invention is suitable for both classroom teaching and autonomous experiments, and can help students understand complex physical phenomena. Through a controllable experimental environment, students can actively explore and verify the principles of mechanics during the experiment, which helps to cultivate students' scientific thinking and hands-on ability. Specifically, the throwing rod 2, the capstan 4, and the bracket 1 are assembled by building blocks. The elastic reset structure 3 is one of a spring and a rubber band.

[0030] like Figure 3 and Figure 4 As shown, in an optional embodiment of the present invention, the driving motor 5 includes a motor body 51 and a driving disc 52 arranged on the output end of the motor body 51 , and the rope 6 is arranged on the driving disc 52 .

[0031] By setting the driving motor 5, the tension and rotation of the rope 6 of the trebuchet are more accurately controllable. The motor body 51 effectively transmits power through the driving disk 52, and can stably control the tightness of the rope 6, so as to accurately adjust the throwing angle and the projection force, and ensure the reliability and repeatability of the mechanical parameters during the experiment. Traditional trebuchets often require manual pulling of the rope 6 or adjusting the tightness of the rope 6, while the present invention realizes the precise adjustment of the rope 6 through the motor driving disk 52, which greatly reduces the complexity of manual operation. Students and teachers can adjust the throwing angle and force through simple motor control to improve the efficiency of the experiment. Due to the stable operation of the motor and the precise transmission of the driving disk 52, the movement of the rope 6 is more stable, avoiding the vibration or uneven tension that may occur during traditional manual pulling. The stable tension of the rope 6 helps to ensure that the results of each experiment are more consistent, thereby improving the reliability of the experimental data.

[0032] Through the cooperation of the driving motor 5 and the driving disk 52, the trebuchet has certain automation characteristics in control, and the operation is easier. The motor can be accurately adjusted as needed, and can run continuously, reducing the fatigue of manual operation and improving the repeatability and efficiency of the experiment. The motor drive system can more accurately control the tension of the rope 6, and compared with the traditional manual adjustment method, it reduces the error of human operation, especially in the experimental process, it can provide more consistent operating conditions, which helps students to observe mechanical phenomena more accurately. The trebuchet of the present invention is more in line with the needs of modern laboratory teaching. Through the automatic control of the motor and the driving disk 52, students can concentrate on the analysis of experimental data and the understanding of physical principles, without having to spend a lot of time and energy on operation, thereby improving the learning effect.

[0033] like Figure 1 and Figure 3 As shown, in an optional embodiment of the present invention, the scale plate 41 and the drive plate 52 are respectively located on both sides of the bracket 1.

[0034] By placing the dial 41 and the drive disk 52 on both sides of the bracket 1, the problem of overlapping or being too close between the two positions is avoided, so that the experimenter has a more spacious and flexible operating space when adjusting, which helps to improve the comfort of operation and reduce the inconvenience during the adjustment process. Placing the dial 41 and the drive disk 52 on both sides of the bracket 1 respectively helps to reduce accidental touches or operational interference during operation. The two parts are set separately, which not only avoids mutual interference, but also allows the experimenter to focus more on their respective adjustment operations, thereby improving the stability of the equipment. Due to the reasonable structural layout of the dial 41 and the drive disk 52, teachers and students can more easily discuss the working principle and mechanical principle of the trebuchet. The teacher can adjust the strength of the drive disk 52 while guiding the students to observe the variable changes of the dial 41, so as to better understand the relationship between the projection angle and the projection physical quantity, and increase the interactivity of classroom teaching.

[0035] By locating the dial 41 and the drive disk 52 on both sides of the bracket 1 respectively, the dial 41 can clearly indicate the angle change of the trebuchet during the experiment. Students can intuitively understand the adjustment of the throwing angle by observing the dial 41, which helps to understand the influence of the angle on the projection trajectory and projection distance. The dial 41 provides a more accurate angle adjustment method. Through the subdivision of the dial 41, the operator can more accurately adjust the angle of the trebuchet to ensure that the projection distance and trajectory at different angles in the experiment meet expectations and reduce errors. Through the precise angle marking provided by the dial 41, the experimenter can accurately record the experimental data at different angles. This is of great significance for subsequent comparative analysis, and can help students deeply understand the physical relationship between the flight distance and angle when throwing at different angles.

[0036] like Figure 3 and Figure 4 As shown, in an optional embodiment of the present invention, the dial 41 is provided with a first long rod 521 and a second long rod 522, and the two ends of the first long rod 521 are rotatably connected to the first ends of the dial 41 and the second long rod 522 respectively, and the rope 6 is arranged on the second end of the second long rod 522.

[0037] Through the rotation connection mode of the first long rod 521 and the second long rod 522, the adjustment of the length of the rope 6 of the dial 41 is smoother and more accurate. Through the synergistic effect of the long rods, students can control the angle of the trebuchet more accurately, so as to more accurately study the influence of the angle on the projection trajectory and the flight distance. The transmission between the first long rod 521 and the second long rod 522 helps to clearly show the force transmission process when the trebuchet is working. By observing the cooperation between the long rod and the rope 6, students can more intuitively understand the relationship between the lever principle and the tension of the rope 6 in the trebuchet, so as to deepen their understanding of the basic principles of physics. The first long rod 521 and the second long rod 522 provide stable support for the pull-down angle adjustment of the rope 6, reduce the shaking or unstable factors of the rope 6 during the operation, make the use of the trebuchet in the experiment more stable and smooth, and improve the controllability and reliability of the experimental operation. Through the cooperation of the first long rod 521 and the second long rod 522, a more reasonable position is provided for the arrangement of the rope 6, ensuring that the rope 6 can effectively transmit the tension when the trebuchet is working.

[0038] like Figure 1 and Figure 2As shown, in an optional embodiment of the present invention, the drive disk 52 is provided with a plurality of mounting holes 501, and the plurality of mounting holes 501 are distributed in a circular array along the rotating shaft 12 of the drive disk 52, and the first long rod 521 is inserted in one of the mounting holes 501. By providing a plurality of mounting holes 501 on the drive disk 52, the drive disk 52 can select different positions to insert the first long rod 521 as needed, thereby achieving more flexible and precise angle adjustment. Teachers and students can switch freely between the plurality of mounting holes 501, select the most suitable rope 6 traction angle for experiment, and meet different teaching needs. The mounting holes 501 are distributed in a circular array along the rotating shaft 12, which can achieve more detailed and continuous rope 6 traction angle adjustment. Each mounting hole 501 corresponds to a different angle position, and students can achieve more precise angle control by accurately selecting the mounting hole 501, thereby deeply understanding the influence of angle change on projection distance and trajectory. Due to the plurality of mounting holes 501, the first long rod 521 can be easily inserted and different rope 6 traction angles can be obtained by simple adjustment, without complex mechanical adjustment or cumbersome operation steps, and the simplified operation process improves the efficiency of teaching and experiment.

[0039] By setting a plurality of mounting holes 501, more options are provided for different angle adjustments, so that the trebuchet can be used for various experiments. For example, the influence of different launch angles on the flight path, speed and flight distance of the projectile can be studied by adjusting the position of the first long rod 521, thereby enriching the content and form of the experiment. Students can insert the first long rod 521 into different mounting holes 501, operate it personally and observe the influence of angle adjustment on the experimental results, which enhances the students' sense of participation and operating experience in the experiment, and helps them deepen their understanding of physical principles through practice. By distributing a plurality of mounting holes 501 in a circular array along the rotating shaft 12 of the dial 41, the space of the drive disk 52 is fully utilized, which not only increases the selectivity of the angle adjustment, but also makes the equipment structure more compact and reasonable, saving space.

[0040] like Figure 1 and Figure 2 As shown, in an optional embodiment of the present invention, the bracket 1 is provided with a ratchet column 11, the dial 41 is provided with a ratchet tooth 411 matching the ratchet column 11, the first end of the ratchet tooth 411 is engaged with the ratchet column 11, and the second end of the ratchet tooth 411 is rotatably connected to the bracket 1.

[0041] The ratchet column 11 cooperates with the ratchet teeth 411 to effectively lock the dial 41 in the desired position, preventing the dial 41 from accidentally sliding during use, and ensuring that the capstan 4 can rotate in a single direction, which can ensure that the angle adjustment of the trebuchet remains stable, without worrying about the angle after adjustment changing, and helps to improve the reliability of the experimental results. After the driving motor 5 drives the throwing rod 2 to complete the power storage, the one-way rotation restriction of the capstan 4 is released by rotating the ratchet column 11, thereby completing the release of the throwing rod 2.

[0042] Through the engagement of the ratchet column 11 and the ratchet 411, the angle can be accurately adjusted by a simple rotation operation of the dial 41 without worrying about over-rotation or inaccurate adjustment. The ratchet 411 structure provides a clear adjustment interval, making each adjustment more accurate and convenient, greatly simplifying the angle setting process in the experiment. The cooperation of the ratchet 411 and the ratchet column 11 effectively prevents reverse sliding or loss of control during angle adjustment, and increases operational safety. Especially in high-frequency teaching use, students can safely adjust the angle to avoid equipment damage or experimental errors caused by improper operation. Through the cooperation of the ratchet column 11 and the ratchet 411, the mechanical stability of the trebuchet is enhanced. The engagement of the ratchet 411 and the ratchet column 11 reduces the wear caused by frequent adjustments, thereby improving the durability of the equipment and ensuring its stability and reliability in long-term use. The ratchet structure can accurately control the angle range of each adjustment, thereby reducing the errors that may occur during manual adjustment, and can ensure that the projection angle is consistent in each experiment, so as to obtain more accurate experimental data.

[0043] like Figure 3 and Figure 4 As shown, in an optional embodiment of the present invention, the bracket 1 is further provided with a rotating shaft 12 , the rotating shaft 12 is parallel to the rotating shaft of the winch 4 , and the rotating shaft 12 is meshed with the ratchet 411 .

[0044] The engagement of the rotating shaft 12 and the ratchet 411 can ensure that the angle adjustment of the dial 41 is more stable, and prevent sudden changes or loss of control of the angle due to external force or improper operation, thereby ensuring that the angle of the catapult remains stable during the experiment and improving the reliability of the experiment. The rotating shaft 12 is parallel to the rotating shaft of the capstan 4, so that the force transmitted during the adjustment process is more uniform, and the error caused by uneven angle adjustment can be effectively avoided, thereby improving the accuracy of angle adjustment and contributing to the consistency and repeatability of the experimental results. The mutual engagement of the rotating shaft 12 and the ratchet 411 can effectively prevent unnecessary sliding or mistakes of the dial 41 during the adjustment process, reduce the risks caused by improper human operation, especially in a teaching environment, and can ensure the safety and correctness of students during operation.

[0045] like Figure 2 and Figure 3 As shown, in an optional embodiment of the present invention, the capstan 4 is further provided with an adjusting wheel 42, which rotates coaxially with the dial 41, and is located at one end of the capstan 4. By providing the adjusting wheel 42 that rotates coaxially with the dial 41, the adjusting wheel 42 is grasped to control the rotation of the dial 41, thereby facilitating the adjustment of the rotation of the dial 41, avoiding directly grasping the dial 41 to rotate and thus damaging the scale mark, making the angle adjustment more precise, and ensuring the accuracy of experiments and teaching.

[0046] like Figure 3 and Figure 4 As shown, in an optional embodiment of the present invention, the adjusting wheel 42 is provided with a plurality of cylinders, and the plurality of cylinders are equidistantly arranged along the outer wheel surface of the adjusting wheel 42. By equidistantly arranging the plurality of cylinders along the outer wheel surface of the adjusting wheel 42, it is convenient to grasp the adjusting wheel 42, so that the adjusting wheel 42 is more stable when rotating, and the shaking or instability caused by a single support point is avoided, thereby improving the smoothness of the angle adjustment. The equidistant arrangement of the cylinders makes each rotation of the adjusting wheel 42 more uniform, and the adjustment process can be controlled more accurately, thereby achieving more precise angle adjustment and reducing errors. The plurality of cylinders not only increase the grip of the adjusting wheel 42, but also make the operation more comfortable and convenient, especially during long-term use, which can effectively reduce hand fatigue and enhance the teaching experience. The plurality of cylinders are distributed on the outer wheel surface, which can evenly share the pressure during operation, reduce wear, and extend the service life of the adjusting wheel 42.

[0047] like Figure 1 and Figure 2As shown, in an optional embodiment of the present invention, the throwing rod 2, the capstan 4 and the bracket 1 are all assembled with building blocks, and the driving motor 5 is connected to the bracket 1 by snapping. By making the throwing rod, the capstan 4 and the bracket 1 assembled with building blocks, the structure and size of the throwing rod, the capstan 4 and the bracket 1 can be flexibly adjusted as needed to meet different teaching and experimental requirements. The modular structure makes the trebuchet more scalable and adaptable. The assembly structure assembled with building blocks makes the assembly and disassembly process of the trebuchet simple and fast, and teachers and students can easily build and adjust the equipment, saving time and energy, and improving the convenience of use. Due to the building block assembly of the bracket 1, teachers and students can make different configurations according to experimental or teaching needs, and even adjust them during actual use to meet different angles and height requirements, thereby enhancing the customizability of the trebuchet. The way in which the driving motor 5 is connected to the bracket 1 by snapping simplifies the installation and disassembly process between the motor and the bracket 1, ensures the stable installation of the motor and avoids failures or instability caused by loose connections. Through the snap connection, the motor can be firmly combined with the bracket 1, reducing the risk of accidental loosening or falling off of the motor during use, and improving the overall stability and safety of use. The use of building blocks makes it easy to check and repair each part of the equipment. When a fault occurs, the damaged parts can be easily replaced, which prolongs the service life of the trebuchet and reduces maintenance costs.

[0048] It should be understood that the various forms of processes shown above can be used to reorder, add or delete steps. For example, the steps described in the present invention can be executed in parallel, sequentially or in different orders, as long as the desired results of the technical solution disclosed in the present invention can be achieved, and this document does not limit this.

[0049] The above specific implementations do not constitute a limitation on the protection scope of the present invention. It should be understood by those skilled in the art that various modifications, combinations, sub-combinations and substitutions can be made according to design requirements and other factors. Any modification, equivalent substitution and improvement made within the principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A trebuchet, characterized in that: include: Bracket; A throwing rod, wherein the throwing rod is provided with a through hole, a connecting portion and a storage portion, the connecting portion is rotatably connected to the bracket, the storage portion is provided at the first end of the throwing rod, the distance between the connecting portion and the first end of the throwing rod is greater than the distance between the connecting portion and the second end of the throwing rod, and the through hole is located between the connecting portion and the first end of the throwing rod; An elastic reset structure, two ends of which are respectively connected to the second end of the throwing rod and the bracket; A capstan, the capstan being arranged on the bracket, the capstan being provided with a dial, and the dial rotating coaxially with the capstan; A driving motor, wherein the driving motor is arranged on the bracket; A rope passes through the through hole, a first end of the rope is wound around the winch, and a second end of the rope is disposed on the output end of the drive motor.

2. The trebuchet according to claim 1, characterized in that: The driving motor comprises a motor body and a driving disc arranged on an output end of the motor body, and the rope is arranged on the driving disc.

3. The trebuchet according to claim 2, characterized in that: The scale plate and the driving plate are respectively located on two sides of the bracket.

4. The trebuchet according to claim 2, characterized in that: The scale plate is provided with a first long rod and a second long rod, two ends of the first long rod are rotatably connected to the scale plate and the first end of the second long rod respectively, and the rope is arranged on the second end of the second long rod.

5. The trebuchet according to claim 4, characterized in that: The driving disk is provided with a plurality of mounting holes, and the plurality of mounting holes are distributed in a circular array along the rotating axis of the driving disk, and the first long rod is inserted into one of the mounting holes.

6. The trebuchet according to claim 1, characterized in that: The bracket is provided with a ratchet column, the dial is provided with a ratchet tooth matching the ratchet column, the first end of the ratchet tooth is meshed with the ratchet column, and the second end of the ratchet tooth is rotatably connected to the bracket.

7. The trebuchet according to claim 6, characterized in that: The bracket is also provided with a rotating shaft, which is parallel to the rotating shaft of the capstan and meshes with the ratchet.

8. The trebuchet according to claim 1, characterized in that: The capstan is also provided with an adjusting wheel, which rotates coaxially with the scale plate and is located at one end of the capstan.

9. The trebuchet according to claim 8, characterized in that: The adjusting wheel is provided with a plurality of columns, and the plurality of columns are arranged equidistantly along the outer wheel surface of the adjusting wheel.

10. The trebuchet according to claim 1, characterized in that: The throwing rod, the winch and the bracket are all assembled with building blocks, and the driving motor is connected with the bracket by snap-fitting.

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