Demonstration device for jet propulsion vehicle

Abstract

The utility model discloses a jet propulsion vehicle demonstration device which comprises a propulsion vehicle underframe, a power assembly and a vehicle seat, the power assembly and the vehicle seat are arranged at the propulsion vehicle underframe, a pedal area located on the front side of the vehicle seat is formed on the propulsion vehicle underframe, a plurality of rolling wheels are arranged on the propulsion vehicle underframe, and the demonstration device further comprises a handle assembly arranged at the propulsion vehicle underframe. The plurality of rolling wheels comprise steering wheels corresponding to the handle assemblies; the power assembly comprises a propelling assembly arranged on the propelling vehicle underframe in the horizontal direction, a gas guide pipe communicated with the propelling assembly and a connecting valve arranged on the propelling assembly, the power assembly further comprises a trigger piece used for opening and closing the connecting valve, one end of the trigger piece is connected to the connecting valve, and the other end of the trigger piece extends to one side of the pedal area. The gas guide pipe is provided with a vertical guide pipe extending in the vertical direction and a horizontal guide pipe extending in the horizontal direction, the vertical guide pipe is communicated with the horizontal guide pipe through a bent guide pipe, and the vertical guide pipe is communicated to the propelling assembly. Therefore, a better teaching effect is obtained.

Description

Technical Field

[0001] The utility model belongs to the field of demonstration teaching aids, and in particular relates to a jet propulsion vehicle demonstration device. Background Art

[0002] Teaching aids are physical objects used for the purpose of spreading science and technology and educating people. Through the rational use of teaching aids in the teaching process, theoretical knowledge can be made physical. Teaching aids are indispensable equipment in the teaching process. Teaching aids can more intuitively demonstrate theoretical knowledge, making it easier for students to accept.

[0003] When teaching jet propulsion, the reaction force of the gas ejected drives the object to move, but often the demonstration is simply to release the balloon to drive the small object to move. The structure is relatively simple and the duration is short. It cannot be controlled during the release process. However, for large devices, such as jet-propelled vehicles, due to their complex structure and large size, they can often only be observed through videos, and students cannot experience it through actual operation. Utility Model Content

[0004] In view of the above-mentioned deficiencies, the utility model provides a jet-propelled vehicle demonstration device, which can realize the miniaturization of the jet-propelled vehicle and make the demonstration device more suitable for teaching.

[0005] The utility model is realized by the following technical solutions:

[0006] A jet-propelled vehicle demonstration device, the demonstration device includes a propulsion vehicle chassis and a power assembly and a seat arranged at the propulsion vehicle chassis, the propulsion vehicle chassis is formed with a footrest area located in front of the seat, the propulsion vehicle chassis is provided with a plurality of rolling wheels, the demonstration device also includes a handle assembly arranged at the propulsion vehicle chassis, the plurality of rolling wheels include a steering wheel corresponding to the handle assembly; the power assembly includes a propulsion assembly arranged at the propulsion vehicle chassis in a horizontal direction, a gas conduit connected to the propulsion assembly, and a connecting valve arranged at the propulsion assembly, the power assembly also includes a trigger for opening and closing the connecting valve, one end of the trigger is connected to the connecting valve, and the other end extends to one side of the footrest area, the gas conduit has a vertical conduit extending in a vertical direction and a horizontal conduit extending in a horizontal direction, the vertical conduit is connected to the horizontal conduit through a bent conduit, and the vertical conduit is connected to the propulsion assembly. The present application is a demonstration device used in teaching, which can demonstrate the working process in a real state to students during teaching, so that students can better understand and observe the working principle, and can also facilitate personal experience, so as to obtain better teaching effect.

[0007] Furthermore, the propulsion assembly includes a plurality of gas cylinders arranged at intervals in a horizontal direction, each gas cylinder is connected to a gas duct, and a connecting valve is respectively arranged at each gas cylinder; the propulsion assembly also includes a pressing piece connected to each connecting valve, the pressing piece has a pressing end connected to each connecting valve and a driving end connected to the trigger member. High-pressure gas is stored in the bottle, so that the release of gas provides sufficient power for the movement of the demonstration device. The connecting valve is arranged at the gas cylinder, so that the opening and closing of the gas cylinder is realized by the connecting valve. Among them, since the opening and closing of the connecting valve is triggered by the trigger member, when there are multiple gas cylinders, in order to enable the gas cylinders to be opened and closed at the same time, the propulsion assembly also includes a pressing member, one end of the trigger member is connected to the driving end of the pressing member, and the pressing member has a pressing end connected to each connecting valve. Therefore, the trigger member is indirectly connected to the connecting valve through the pressing member. When the trigger member moves, the pressing end can be driven to move by the movement of the driving end, so that all the gas cylinders can be started, which can not only provide stronger power, but also make the power acting on the underframe of the propulsion vehicle more uniform, so that the demonstration device can move more smoothly.

[0008] Further, the gas cylinder includes a first gas cylinder and a second gas cylinder, the connecting valve includes a first connecting valve arranged at the first gas cylinder and a second connecting valve arranged at the second gas cylinder, the pressing member includes a first pressing section and a second pressing section forming a pressing end, and the first pressing section and the second pressing section correspond to the first connecting valve and the second connecting valve respectively, and the pressing member also includes an integrated section forming a driving end, and the integrated section connects the first pressing section and the second pressing section. Since the gas cylinder needs to be started at the same time when starting, when two gas cylinders are provided, the pressing member is made to correspond to the first connecting valve and the second connecting valve at the gas cylinder through the first pressing section and the second pressing section respectively, and the integrated section in the pressing member can be connected to the first pressing section and the second pressing section at the same time, so that the trigger member is correspondingly connected to the integrated section, and when the trigger member moves, it can drive the first connecting valve and the second connecting valve to be opened at the same time through the integrated section, and finally realize the simultaneous start of the first gas cylinder and the second gas cylinder.

[0009] Furthermore, the integrated section is bent to form a groove, and one end of the triggering member is snapped into the groove to connect with the integrated section. The integrated section is bent to form a groove accordingly, and the formed groove structure can not only provide an installation space for the triggering member, but also limit the triggering member, so that the triggering member can be better snapped into the groove to better drive the pressing member to move.

[0010] Furthermore, the propulsion assembly also includes a fixing plate connected to each gas conduit, and the fixing plate is installed at the horizontal conduit of each gas conduit. Since the gas ejected from the gas cylinder is high-pressure gas, the horizontal conduits are connected and fixed by setting the fixing plate, so that the connection between the horizontal conduits is tighter, and not only can the fixing plates be used to limit each other so that the horizontal conduits can be better arranged in the horizontal direction, but also can prevent the horizontal conduits from shaking.

[0011] Furthermore, the trigger member includes a trigger rod for opening and closing the connection valve, a driving rod connected to the trigger rod, and a support rod connecting the driving rod and the underframe of the propulsion vehicle, the support rod is formed with a through hole for the driving rod to pass through, and the driving rod is located on one side of the pedal area. The support rod is connected to the underframe of the propulsion vehicle, so that the trigger rod and the driving rod are supported and fixed by the support rod, and the driving rod is arranged through the support rod, so the driving rod can also be limited by the support rod, so that the direction of the driving rod when moving is more accurate, and at the same time, one end of the trigger member extends to one side of the pedal area, that is, the driving rod has a part located on one side of the pedal area, and the gas cylinder can be released by only moving the trigger rod away from the connection valve, that is, moving forward, and the movement of the demonstration device can be realized, and the greater the movement amount, the more gas will be released from the gas cylinder, and the faster the speed will be when the connection valve reaches the maximum opening, and at this time, the driving rod can no longer be driven to move forward, and this is the maximum speed of the demonstration device when driven by the gas cylinder.

[0012] Furthermore, a limit plate is fixed at the driving rod, and the triggering member also includes an elastic reset member sleeved at the driving rod, and the elastic reset member is located between the limit plate and the support rod. The elastic reset member is located between the limit plate and the support rod, so when the driving rod moves, it will drive the limit plate at the driving rod to move synchronously, and synchronously drive the elastic reset member to move, that is, the elastic reset member is compressed. When the operator no longer places the foot on the triggering member, the elastic reset member will be reset from the compressed state and drive the limit plate to move, thereby realizing the automatic reset of the driving rod and the triggering rod, and the operation is more convenient.

[0013] Furthermore, the propulsion assembly includes a plurality of gas cylinders arranged at intervals in the horizontal direction, and the propulsion vehicle chassis includes a chassis body and a support beam arranged at the chassis body, and the support beam divides the chassis body into a storage area for accommodating each gas cylinder. The plurality of gas cylinders are arranged in a horizontal direction when installed, that is, the gas cylinders do not occupy a large area in the vertical direction, and when the gas cylinders are arranged horizontally, they can also match the overall shape of the propulsion vehicle chassis, thereby making full use of the space at the propulsion vehicle chassis, and at the same time, the storage area is formed by the support beam and the chassis body, so as to facilitate the placement of the gas cylinders.

[0014] Furthermore, the propulsion assembly also includes a fixing buckle corresponding to each gas cylinder, the fixing buckle is located on the outside of the corresponding gas cylinder, and the two ends of the fixing buckle are respectively fixed to the support beam, or the two ends of the fixing buckle are respectively fixed to the support beam and the chassis body. The fixing buckle can tightly fix the gas cylinder to the chassis of the propulsion vehicle to prevent the gas cylinder from shaking when the demonstration device moves, and the support beam not only supports the gas cylinder, but also provides space for the installation of the fixing buckle, so that the fixing buckle can closely match the gas cylinder, and the fixing effect is better.

[0015] Furthermore, the demonstration device also includes a brake assembly, which includes a brake handle arranged at the handle assembly, a brake caliper arranged at the rolling wheel, and a brake line connecting the brake handle and the brake caliper, and the brake line is located at the lower side of the propulsion assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A three-dimensional schematic diagram for illustrating an exemplary embodiment of the demonstration device in the utility model;

[0017] Figure 2 A schematic top view for illustrating a schematic implementation of the demonstration device in the utility model.

[0018] Reference numerals:

[0019] 1. Propulsion vehicle chassis, 11. Footrest area, 12. Steering wheel, 13. Support wheel, 14. Chassis body, 15. Support beam;

[0020] 21. a first gas cylinder, 22. a second gas cylinder, 23. a pressing member, 231. a first pressing section, 232. a second pressing section, 233. an integrated section, 24. a fixing plate, 25. a first connecting valve, 26. a second connecting valve, 27. a gas conduit, 271. a vertical conduit, 272. a horizontal conduit, 273. a bent conduit, 28. a trigger member, 281. a trigger rod, 282. a driving rod, 283. a supporting rod, 284. a limiting plate, 285. an elastic reset member;

[0021] 3. Car seat;

[0022] 4. Handle assembly. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] It should be noted that the directional terms such as left, right, up, down, front and back in the embodiments of the present invention are merely relative concepts or are based on the normal use state of the product, that is, the direction of movement of the product, and should not be considered as limiting.

[0025] In addition, it should be noted that the dynamic terms such as "relative motion" mentioned in the embodiments of the present invention are not only changes in position, but also include movements such as rotation and rolling where there is no relative change in position but a change in state.

[0026] Finally, it should be noted that when a component is referred to as being "located" or "set on" another component, it can be on the other component or there can be an intermediate component at the same time. When a component is referred to as being "connected to" another component, it can be directly connected to the other component or there can be an intermediate component at the same time.

[0027] like Figure 1 and Figure 2 A jet-propelled vehicle demonstration device is shown, the demonstration device includes a propulsion vehicle frame 1 and a power assembly and a seat 3 arranged at the propulsion vehicle frame 1, the propulsion vehicle frame 1 is formed with a footrest area 11 located in front of the seat 3, the propulsion vehicle frame 1 is provided with a plurality of rolling wheels, the demonstration device also includes a handle assembly 4 arranged at the propulsion vehicle frame 1, the plurality of rolling wheels include a steering wheel 12 corresponding to the handle assembly 4; the power assembly includes a propulsion assembly arranged at the propulsion vehicle frame 1 in a horizontal direction, a gas conduit 27 connected to the propulsion assembly and a connecting valve arranged at the propulsion assembly, the power assembly also includes a valve for opening and closing the connecting valve A trigger member 28, one end of the trigger member 28 is connected to the connecting valve, and the other end extends to one side of the pedal area 11. The gas duct 27 has a vertical duct 271 extending in the vertical direction and a horizontal duct 272 extending in the horizontal direction. The vertical duct 271 is connected to the horizontal duct 272 through a bent duct 273, and the vertical duct 271 is connected to the propulsion assembly; the present application is a demonstration device used in teaching, which can demonstrate the working process in a real state to students during teaching, so that students can better understand and observe the working principle, and can also experience it in person, so as to obtain better teaching effect.

[0028] The demonstration device in the present application is a jet-propelled vehicle, which can be driven to move by the reaction force of gas. The propulsion vehicle frame 1 is a supporting structure. The rolling wheels are arranged at the propulsion vehicle frame 1, so that the propulsion vehicle frame 1 is suspended and can support other structures. The movement of the propulsion vehicle frame 1 is achieved by the rotation of the rolling wheels, and the structure at the propulsion vehicle frame 1 is driven to move synchronously. Specifically, the demonstration device also includes a seat 3 arranged at the propulsion vehicle frame 1, and the operator can sit at the seat 3. The propulsion vehicle frame 1 is formed with a footrest area 11 located on the front side of the seat 3. Therefore, after sitting on the seat 3, the operator can place his feet on the footrest area 11 accordingly. At the same time, a handle assembly 4 is arranged at the propulsion vehicle frame 1, and the handle assembly 4 can It is able to control the moving direction of the demonstration device, and in order to enable the demonstration device to move in different directions, the multiple rolling wheels include a steering wheel 12 corresponding to the handle assembly 4. When the handle assembly 4 is rotated, the steering wheel 12 will be driven to rotate accordingly, thereby achieving a change in direction. In order to support the propulsion vehicle frame 1 more stably, the multiple rolling wheels also include two support wheels 13 arranged on the rear side of the propulsion vehicle frame 1, and the steering wheel 12 is located at the midline of the line connecting the two support wheels 13, so that the overall structure is more stable, that is, the multiple rolling wheels are composed of a steering wheel 12 and two support wheels 13. It can be understood that in order to improve the stability of the support, the number and setting position of the support wheels 13 can also be selected differently according to the actual situation, which will not be repeated here.

[0029] When the demonstration device needs to be started, the propulsion vehicle frame 1 is driven to move by the power assembly, wherein the propulsion assembly in the power assembly is used to provide gas, and the gas is ejected through the gas conduit 27, thereby driving the propulsion vehicle frame 1 to move through the reaction force, and a connecting valve is provided at the propulsion assembly, so that the power is started and stopped by opening and closing the connecting valve. At the same time, the power assembly also includes a trigger member 28, one end of the trigger member 28 is connected to the connecting valve, and the other end extends to one side of the footrest area 11. Since the operator can place his foot on the footrest area 11, and the trigger member 28 extends to one side of the footrest area 11, it is convenient for the operator to interact with the trigger member 28 through the foot placed on the footrest area 11. , and drives the trigger member 28 to move, and the other end of the trigger member 28 is connected to the connecting valve, so as to adjust the state of the connecting valve accordingly, wherein the gas in the propulsion assembly can be ejected by the gas conduit 27, and the gas conduit 27 is composed of a vertical conduit 271, a horizontal conduit 272 and a bent conduit 273, the vertical conduit 271 is connected to the gas outlet of the propulsion assembly, and the bent conduit 273 can change the direction so that the gas can move from the bent conduit 273 to the connected horizontal conduit 272, and eject the gas in the horizontal direction, so that the ejection direction of the gas and the moving direction of the demonstration device are both horizontal directions, which can more conveniently drive the demonstration device to move.

[0030] As an embodiment of the present application, the propulsion assembly includes a plurality of gas cylinders arranged at intervals in the horizontal direction, each gas cylinder is connected to a gas conduit 27, and a connecting valve is respectively arranged at each gas cylinder; the propulsion assembly also includes a pressing member 23 connected to each connecting valve, the pressing member 23 has a pressing end connected to each connecting valve and a driving end connected to a trigger member 28; high-pressure gas is stored in the gas cylinder, so that the release of the gas provides sufficient power for the movement of the demonstration device, and the connecting valve is arranged at the gas cylinder, so that the opening and closing of the gas cylinder is realized by the connecting valve, wherein, since the opening and closing of the connecting valve is controlled by the trigger member 28 Triggering, when there are multiple gas cylinders, in order to enable the gas cylinders to be opened and closed at the same time, the propulsion assembly also includes a pressing piece 23, one end of the trigger piece 28 is connected to the driving end of the pressing piece 23, and the pressing piece 23 has a pressing end connected to each connecting valve, so the trigger piece 28 is indirectly connected to the connecting valve through the pressing piece 23, when the trigger piece 28 moves, the movement of the driving end can drive the pressing end to move, so that all the gas cylinders can be started, which can not only provide stronger power, but also make the power acting on the propulsion vehicle frame 1 more uniform, so that the demonstration device can move more smoothly.

[0031] Among them, high-pressure gas is stored in the gas cylinder, and the temperature of the gas in the gas cylinder is relatively low. Therefore, when the gas in the gas cylinder is ejected through the gas duct 27, the gas in the gas cylinder will be released into the air. Therefore, the gas in the gas cylinder is selected as a gas that is harmless to the human body, and because of the low temperature, white mist will be generated when released into the air, which is more convenient for observation. The corresponding principle can be better understood through the demonstration device.

[0032] As another embodiment of the present application, the propulsion component can also be selected as a gas cylinder, and a counterweight block can be selected, or the gas cylinder can be set in the middle area of ​​the propulsion vehicle frame 1, so that the propulsion vehicle frame 1 can be balanced after installation. For the convenience of driving, the seat 3 will also be set in the middle area of ​​the propulsion vehicle frame 1. Therefore, in order to avoid mutual influence between the gas cylinder and the seat 3, the gas cylinder can be set between the seat 3 and the handle assembly 4. At this time, the gas duct 27 is correspondingly set as one, and in order to also avoid mutual influence between the gas duct 27 and the seat 3, the gas duct 27 can be set through the seat 3. Since the gas cylinder is set in the middle area of ​​the propulsion vehicle frame 1, the gas duct 27 is set through the seat 3, so that the gas duct 27 does not need to be bent to avoid the seat 3, so the gas ejected from the gas duct 27 is also correspondingly in the middle area, so that the propulsion component is pushed more smoothly during the driving demonstration.

[0033] It is understandable that by setting up multiple gas cylinders, the demonstration device will have more sufficient power when moving. Therefore, considering the power during movement and the overall size, two gas cylinders are selected, which can be located on both sides of the seat 3 respectively. Not only will the gravity be more uniform, but there will also be no mutual influence between the seat 3 and the handle assembly 4. Below, two gas cylinders are taken as an example for detailed explanation.

[0034] In the present application, the gas cylinder includes a first gas cylinder 21 and a second gas cylinder 22, the connecting valve includes a first connecting valve 25 arranged at the first gas cylinder 21 and a second connecting valve 26 arranged at the second gas cylinder 22, the pressing member 23 includes a first pressing section 231 and a second pressing section 232 forming a pressing end, and the first pressing section 231 and the second pressing section 232 correspond to the first connecting valve 25 and the second connecting valve 26 respectively, and the pressing member 23 also includes an integrated section 233 forming a driving end, and the integrated section 233 connects the first pressing section 231 and the second pressing section 232; since the gas cylinder needs to be started at the same time Therefore, when two gas cylinders are provided, the pressing piece 23 is respectively connected to the first connecting valve 25 and the second connecting valve 26 at the gas cylinders through the first pressing section 231 and the second pressing section 232, and the integrated section 233 in the pressing piece 23 can be connected to the first pressing section 231 and the second pressing section 232 at the same time. Therefore, the trigger member 28 is correspondingly connected to the integrated section 233. When the trigger member 28 moves, the first connecting valve 25 and the second connecting valve 26 can be driven to open at the same time through the integrated section 233, and finally the first gas cylinder 21 and the second gas cylinder 22 are started at the same time.

[0035] Preferably, the integrated section 233 is bent to form a groove, and one end of the trigger member 28 is snapped into the groove to be connected to the integrated section 233; the integrated section 233 is bent to form a groove accordingly, and the formed groove structure can not only provide an installation space for the trigger member 28, but also limit the trigger member 28, so that the trigger member 28 can be better snapped into the groove to better drive the pressing member 23 to move.

[0036] As an embodiment of the present application, the propulsion assembly also includes a fixing plate 24 connected to each gas duct 27, and the fixing plate 24 is installed to the horizontal duct 272 of each gas duct 27; since the gas sprayed from the gas cylinder is a high-pressure gas, the horizontal duct 272 is connected and fixed by setting the fixing plate 24, so that the connection between the horizontal ducts 272 is tighter, and not only can they be limited to each other by the fixing plate 24 so that the horizontal duct 272 can be better set in the horizontal direction, but also the horizontal duct 272 can be prevented from shaking.

[0037] In the present application, the trigger member 28 includes a trigger rod 281 for opening and closing the connection valve, a driving rod 282 connected to the trigger rod 281, and a support rod 283 connecting the driving rod 282 and the propulsion vehicle frame 1, the support rod 283 is formed with a through hole for the driving rod 282 to pass through, and the driving rod 282 is located on one side of the pedal area 11; the support rod 283 is connected to the propulsion vehicle frame 1, so that the trigger rod 281 and the driving rod 282 are supported and fixed by the support rod 283, and the driving rod 282 is arranged through the support rod 283, so the driving rod 282 can also be limited by the support rod 283. This makes the direction of the driving rod 282 more precise when moving. At the same time, one end of the trigger member 28 extends to one side of the pedal area 11, that is, the driving rod 282 has a portion located on one side of the pedal area 11. The gas cylinder can be released by only moving the trigger rod 281 away from the connecting valve, that is, moving forward, and the movement of the demonstration device can be achieved. The greater the movement, the more gas will be released from the gas cylinder and the faster the movement will be. When the connecting valve reaches the maximum opening, the driving rod 282 can no longer be driven forward. At this time, the demonstration device is driven by the gas cylinder at its maximum speed.

[0038] Preferably, a limiting plate 284 is fixed at the driving rod 282, and the trigger member 28 also includes an elastic reset member 285 sleeved on the driving rod 282, and the elastic reset member 285 is located between the limiting plate 284 and the support rod 283; since the demonstration device is started by the movement of the trigger rod 281 to drive the driving rod 282 to move, thereby realizing the opening and closing of the connecting valve, the demonstration device will be started when the driving rod 282 is driven to move forward, and when the gas cylinder needs to be closed, the driving rod 282 needs to be moved in the opposite direction, that is, backward, so that the demonstration device is decelerated, and the limiting plate is set 284, thereby forming a limiting area with the support rod 283, and the elastic reset member 285 is located between the limiting piece 284 and the support rod 283. Therefore, when the driving rod 282 moves, it will drive the limiting piece 284 at the driving rod 282 to move synchronously, and simultaneously drive the elastic reset member 285 to move, that is, the elastic reset member 285 is compressed. When the operator no longer places his foot on the trigger member 28, the elastic reset member 285 will be reset from the compressed state and drive the limiting piece 284 to move, thereby realizing the automatic reset of the driving rod 282 and the trigger rod 281, and the operation is more convenient.

[0039] In the present application, the propulsion assembly includes a plurality of gas cylinders arranged at intervals in the horizontal direction, and the propulsion vehicle underframe 1 includes a underframe body 14 and a support beam 15 arranged at the underframe body 14, and the support beam 15 divides the underframe body 14 into accommodating areas for accommodating each gas cylinder; the plurality of gas cylinders are arranged in a horizontal direction when installed, that is, the gas cylinders will not occupy a large area in the vertical direction, and at the same time, when the gas cylinders are arranged horizontally, they can also match the overall shape of the propulsion vehicle underframe 1, thereby making full use of the space at the propulsion vehicle underframe 1, and at the same time, a accommodating area is formed by the support beam 15 and the underframe body 14, so as to facilitate the placement of the gas cylinders.

[0040] Preferably, the propulsion assembly also includes a fixing buckle corresponding to each gas cylinder, the fixing buckle is located on the outside of the corresponding gas cylinder, and the two ends of the fixing buckle are respectively fixed to the support beam 15, or the two ends of the fixing buckle are respectively fixed to the support beam 15 and the base frame body 14; the fixing buckle can make the gas cylinder tightly fixed to the propulsion vehicle base frame 1 to prevent the gas cylinder from shaking when the demonstration device moves, and the support beam 15 not only plays the role of supporting the gas cylinder, but also provides space for the installation of the fixing buckle, so that the fixing buckle can fit closely with the gas cylinder, and the fixing effect is better.

[0041] In the present application, the demonstration device also includes a brake assembly, which includes a brake handle arranged at the handle assembly 4, a brake caliper arranged at the rolling wheel, and a brake line connecting the brake handle and the brake caliper, and the brake line is located at the lower side of the propulsion assembly. The brake assembly can be used to decelerate the demonstration device. It can be understood that the brake caliper is arranged at the rolling wheel, and the rolling wheel is composed of a steering wheel 12 and a support wheel 13. Therefore, the brake caliper is arranged at the support wheel 13.

[0042] The above is only an embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various changes and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the scope of the claims of the present application.

Claims

1. A jet-propelled vehicle demonstration device, characterized in that: The demonstration device comprises a propulsion vehicle frame, a power assembly and a seat arranged at the propulsion vehicle frame, the propulsion vehicle frame is formed with a footrest area located in front of the seat, the propulsion vehicle frame is provided with a plurality of rolling wheels, the demonstration device further comprises a handle assembly arranged at the propulsion vehicle frame, the plurality of rolling wheels comprises a steering wheel corresponding to the handle assembly; The power assembly includes a propulsion assembly horizontally arranged at the propulsion vehicle underframe, a gas conduit connected to the propulsion assembly, and a connecting valve arranged at the propulsion assembly. The power assembly also includes a trigger member for opening and closing the connecting valve, one end of the trigger member is connected to the connecting valve, and the other end extends to one side of the footrest area. The gas conduit has a vertical conduit extending in the vertical direction and a horizontal conduit extending in the horizontal direction. The vertical conduit is connected to the horizontal conduit through a bent conduit, and the vertical conduit is connected to the propulsion assembly.

2. A jet-propelled vehicle demonstration device according to claim 1, characterized in that: The propulsion assembly includes a plurality of gas cylinders arranged at intervals in the horizontal direction, each of the gas cylinders is connected to the gas duct, and the connecting valves are respectively arranged at each of the gas cylinders; the propulsion assembly also includes a pressing piece connected to each of the connecting valves, and the pressing piece has a pressing end connected to each of the connecting valves and a driving end connected to the trigger member.

3. A jet-propelled vehicle demonstration device according to claim 2, characterized in that: The gas cylinder includes a first gas cylinder and a second gas cylinder, the connecting valve includes a first connecting valve arranged at the first gas cylinder and a second connecting valve arranged at the second gas cylinder, the pressing piece includes a first pressing section and a second pressing section forming the pressing end, and the first pressing section and the second pressing section correspond to the first connecting valve and the second connecting valve respectively, and the pressing piece also includes an integrated section forming the driving end, and the integrated section connects the first pressing section and the second pressing section.

4. A jet-propelled vehicle demonstration device according to claim 3, characterized in that: The integrated section is bent to form a groove, and one end of the trigger member is clamped into the groove to be connected with the integrated section.

5. A jet-propelled vehicle demonstration device according to claim 2, characterized in that: The propulsion assembly further includes a fixing plate connected to each of the gas conduits, and the fixing plate is installed at the horizontal conduit of each of the gas conduits.

6. A jet-propelled vehicle demonstration device according to claim 1, characterized in that: The trigger member includes a trigger rod for opening and closing the connection valve, a driving rod connected to the trigger rod, and a support rod connecting the driving rod and the propulsion vehicle underframe, the support rod is formed with a through hole for the driving rod to pass through, and the driving rod is located on one side of the footrest area.

7. A jet-propelled vehicle demonstration device according to claim 6, characterized in that: A limiting plate is fixed at the driving rod, and the trigger member further comprises an elastic reset member sleeved on the driving rod, wherein the elastic reset member is located between the limiting plate and the supporting rod.

8. A jet-propelled vehicle demonstration device according to claim 1, characterized in that: The propulsion assembly includes a plurality of gas cylinders arranged at intervals in a horizontal direction, and the propulsion vehicle chassis includes a chassis body and a support beam arranged at the chassis body, wherein the support beam divides the chassis body into accommodating areas for accommodating the gas cylinders.

9. A jet-propelled vehicle demonstration device according to claim 8, characterized in that: The propulsion assembly also includes a fixing buckle corresponding to each of the gas cylinders, the fixing buckle is located on the outside of the corresponding gas cylinder, and the two ends of the fixing buckle are respectively fixed to the support beam, or the two ends of the fixing buckle are respectively fixed to the support beam and the base frame body.

10. A jet-propelled vehicle demonstration device according to claim 1, characterized in that: The demonstration device also includes a brake assembly, which includes a brake handle arranged at the handle assembly, a brake caliper arranged at the rolling wheel, and a brake line connecting the brake handle and the brake caliper, and the brake line is located at the lower side of the propulsion assembly.

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