Hand-push type fire fighting truck

Abstract

The utility model discloses a hand-push type fire fighting truck, which comprises a chassis frame; the four-wheel steering device is arranged on the chassis frame; the protection shell is fixedly arranged on the chassis frame, covers the four-wheel steering device and is used for protecting a transmission part of the four-wheel steering device; one end of the operating rod is arranged on the four-wheel steering device, and the other end of the operating rod extends out of the protective shell; and the fire extinguishing assembly is arranged on the top surface of the protective shell. The four-wheel steering device is arranged on the chassis frame, and the operating rod used for driving the four-wheel steering device so as to adjust the steering angle is arranged, so that when the fire fighting truck needs to turn, the operating rod is swung in the direction opposite to the turning direction, the operating rod drives the four-wheel steering device and enables the four rollers to synchronously deflect, and the steering angle of the fire fighting truck is adjusted. The turning radius of the fire fighting truck is reduced, so that the fire fighting truck can turn in a narrower space, and the passing performance is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of fire fighting equipment, in particular to a hand-propelled fire fighting truck. Background Art

[0002] A push fire truck is a simple and basic fire-fighting equipment, usually pushed manually by one or more people. It is mainly used for the initial firefighting of small-scale fires, especially in narrow areas such as corridors, stairs, elevators, etc.

[0003] A push fire truck usually consists of a water tank, a spraying device and a mobile platform. The water tank is usually filled with water or fire foam, which is sprayed out through the spraying device. The nozzle of the spraying device is used to control the direction and pattern of the spray. The advantages of a push fire truck are flexibility, portability and ease of operation. Since it does not rely on external energy supply, it can be put into use quickly in the first place when a fire occurs.

[0004] The mobile platform of the existing push-type fire truck is provided with a group of directional rollers and a group of universal wheels at the bottom. The movement and steering of the mobile platform are realized by pushing and pulling the handle fixed on the mobile platform by manpower. During the pushing process, a lateral force perpendicular to the moving direction of the platform is applied to the handle to change the angle of the universal wheel, so that the mobile platform can turn and change direction. However, this turning method makes the turning radius of the fire truck larger, which is not convenient to operate when used in a small space. The fire truck may be interfered with by objects in the small space and it is difficult to continue to move, thereby delaying the firefighting time.

[0005] To this end, the present application specifically proposes a hand-push fire truck to solve the above technical problems. Utility Model Content

[0006] The main purpose of the utility model is to solve the above-mentioned deficiencies and provide a hand-propelled fire truck that can turn with a smaller turning radius while keeping the overall size unchanged, thereby improving passability and ease of use.

[0007] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0008] A hand-pushed fire truck comprises: a chassis frame; a four-wheel steering device, which is arranged on the chassis frame; a protective shell, which is fixedly arranged on the chassis frame and covers the four-wheel steering device and is used to protect the transmission components of the four-wheel steering device; an operating rod, one end of which is arranged on the four-wheel steering device and the other end extends to the outside of the protective shell, and is used to drive the four-wheel steering device and adjust the steering angle; and a fire extinguishing assembly, which is arranged on the top surface of the protective shell.

[0009] Furthermore, the four-wheel steering device includes an L-shaped connecting rod rotatably arranged at the four corners of the chassis frame, a roller rotatably arranged at one end of the L-shaped connecting rod, a first connecting rod slidably arranged on the chassis frame, a second connecting rod hinged to the L-shaped connecting rod at one end and hinged to the first connecting rod at the other end, and a driving assembly for driving the two first connecting rods to slide synchronously.

[0010] Furthermore, a mounting rod for mounting the first connecting rod is provided on the chassis frame, a sliding groove is provided on the top surface of the mounting rod, and a sliding block cooperating with the sliding groove is fixedly provided on the bottom of the first connecting rod.

[0011] Furthermore, one side of the first connecting rod is provided with teeth, and the driving assembly includes mounting frames fixedly arranged at both ends of the chassis frame, gears rotatably arranged on the mounting frames and meshing with the first connecting rod, and synchronization rods symmetrically arranged on the two gears.

[0012] Furthermore, one end of the operating rod is rotatably disposed on the mounting frame, and the operating rod and the gear share a rotating shaft and are transmission-connected to the rotating shaft.

[0013] Furthermore, a handle is fixedly provided on one end of the operating rod extending out of the protective shell.

[0014] Furthermore, a partition is fixedly provided on the protective shell, a support rod is fixedly provided on the operating rod, and the other end of the support rod is hinged on the partition.

[0015] Furthermore, the rotation axis of the support rod is coaxial with the rotation axis of the operating rod.

[0016] Furthermore, the fire extinguishing assembly includes a fire extinguisher and a fine water mist fire extinguishing device arranged on the top surface of the protective shell.

[0017] The beneficial effects of the utility model are embodied in:

[0018] The utility model arranges a four-wheel steering device on a chassis frame, and arranges an operating lever for driving the four-wheel steering device to adjust the steering angle. Through such an arrangement, when the fire truck needs to turn, the operating lever is swung in the opposite direction of the turn, the operating lever drives the four-wheel steering device and causes the four rollers to deflect synchronously, thereby reducing the turning radius of the fire truck, enabling it to turn in a narrower space, and improving its passing performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The drawings constituting part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:

[0020] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the utility model;

[0021] Figure 2 It is a schematic diagram of the overall structure of another perspective of an embodiment of the utility model;

[0022] Figure 3 This is a schematic diagram of a half-section structure of a protective shell according to an embodiment of the utility model;

[0023] Figure 4 This is a schematic diagram of the chassis frame and four-wheel steering device structure of an embodiment of the utility model;

[0024] Figure 5 This is a schematic diagram of the chassis frame and four-wheel steering device structure of an embodiment of the utility model;

[0025] Figure 6 This is a schematic structural diagram of a four-wheeled box packing device according to an embodiment of the utility model;

[0026] Figure 7 This is a schematic diagram of the first connecting rod structure of an embodiment of the utility model;

[0027] Figure 8 This is a schematic diagram of the coaxial axis of the support rod and the rotation axis of the operating rod according to an embodiment of the utility model.

[0028] In the figure: 1. chassis frame; 2. four-wheel steering device; 21. L-shaped connecting rod; 22. roller; 23. first connecting rod; 24. second connecting rod; 25. drive assembly; 251. mounting frame; 252. gear; 253. synchronization rod; 3. protective shell; 4. operating lever; 5. fire extinguishing assembly; 51. fire extinguisher; 52. fine water mist fire extinguishing device; 6. mounting rod; 7. slide groove; 8. slider; 9. handle; 10. partition; 11. support rod. DETAILED DESCRIPTION

[0029] The following will be combined with 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. In the absence of conflict, the embodiments in this application and the features in the embodiments can be combined with each other. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0030] like Figure 1-8 As shown, the utility model provides a hand-pushed fire truck, comprising:

[0031] Chassis frame 1;

[0032] A four-wheel steering device 2, arranged on the chassis frame 1;

[0033] A protective shell 3 is fixedly arranged on the chassis frame 1 and covers the four-wheel steering device 2, and is used to protect the transmission components of the four-wheel steering device 2;

[0034] An operating rod 4, one end of which is arranged on the four-wheel steering device 2 and the other end of which extends to the outside of the protective shell 3, is used to drive the four-wheel steering device 2 and adjust the steering angle;

[0035] The fire extinguishing assembly 5 is arranged on the top surface of the protective shell 3 .

[0036] When in use, the operator holds the operating lever 4 to push the fire truck. When turning is required, the operator swings the operating lever 4 and drives the four-wheel steering device 2 to change the deflection direction of the four wheels at the same time, reducing the turning radius, making it easier to operate the fire truck to turn, thereby improving the passability of the hand-pushed fire truck in a narrow space.

[0037] In one embodiment, the four-wheel steering device 2 includes an L-shaped link 21 rotatably arranged at the four corners of the chassis frame 1, a roller 22 rotatably arranged at one end of the L-shaped link 21, a first link 23 slidably arranged on the chassis frame 1, a second link 24 hinged at one end to the L-shaped link 21 and hinged at the other end to the first link 23, and a driving assembly 25 for driving the two first links 23 to slide synchronously. In this design, the two second connecting rods 24 form a group and are hinged at the two ends of the same first connecting rod 23. When the first connecting rod 23 slides on the chassis frame 1, the two second connecting rods 24 are driven to swing at the same time, and the second connecting rod 24 drives the L-shaped connecting rod 21 to rotate. Finally, the L-shaped connecting rod 21 drives a group of rollers 22 to deflect synchronously in the same direction, and the driving component 25 drives another first connecting rod 23 to move synchronously in the same direction on the chassis frame 1, and then the first connecting rod 23 drives another group of rollers 22 to deflect synchronously in the opposite direction to the previous group of rollers 22, thereby realizing the simultaneous adjustment of the deflection angles of the four wheels, which is more convenient for turning.

[0038] In one embodiment, a mounting rod 6 for mounting the first connecting rod 23 is provided on the chassis frame 1, a slide groove 7 is provided on the top surface of the mounting rod 6, and a slider 8 cooperating with the slide groove 7 is fixedly provided on the bottom of the first connecting rod 23. With this design, the first connecting rod 23 can slide along the mounting rod 6 under the limiting effect generated by the cooperation between the slider 8 and the slide groove 7.

[0039] In one embodiment, one side of the first connecting rod 23 is provided with teeth, and the driving assembly 25 includes a mounting frame 251 fixedly provided at both ends of the chassis frame 1, a gear 252 rotatably provided on the mounting frame 251 and meshing with the first connecting rod 23, and a synchronization rod 253 symmetrically provided on the two gears 252. In this design, when one of the gears 252 rotates, the other gear 252 can be driven to rotate in the same direction through the synchronization rod 253, and since the gear 252 meshes with the teeth of the first connecting rod 23, the two first connecting rods 23 can move synchronously in the same direction under the driving action of the gear 252.

[0040] In one embodiment, one end of the operating rod 4 is rotatably mounted on the mounting frame 251, and the operating rod 4 and the gear 252 share a rotating shaft and are in transmission connection with the rotating shaft. With this design, when the operating rod 4 is swung, the operating rod 4 rotates around the mounting frame 251 and drives the gear 252 to rotate together, and the gear 252 drives another gear 252 to rotate through the synchronization rod 253. The two gears 252 eventually drive the two groups of rollers 22 to deflect synchronously in opposite directions, so as to adjust the deflection angles of the four rollers 22 at the same time, which is conducive to reducing the turning radius and making it easier to turn.

[0041] In one embodiment, a handle 9 is fixedly provided at one end of the operating rod 4 extending out of the protective shell 3. With this design, the operator can hold the handle 9 to push and swing the operating rod 4, which is more convenient for operation.

[0042] In one embodiment, a partition 10 is fixedly provided on the protective shell 3, a support rod 11 is fixedly provided on the operating rod 4, and the other end of the support rod 11 is hinged on the partition 10. With this design, when the operating rod 4 is pushed and swung, the support rod 11 and the hinge point of the operating rod 4 jointly bear the external force transmitted by the operating rod 4, reducing the load on the hinge point of the operating rod 4, thereby reducing the probability of damage to the hinge point of the operating rod 4.

[0043] In one embodiment, the rotation axis of the support rod 11 is coaxial with the rotation axis of the operating rod 4. With this design, the operating rod 4 can swing in a circular arc trajectory around the axis, ensuring the smoothness of the swing of the operating rod 4.

[0044] In one embodiment, the fire extinguishing assembly 5 includes a fire extinguisher 51 and a fine water mist fire extinguishing device 52 arranged on the top surface of the protective shell 3. With this design, after the fire truck is pushed to the fire, the nozzles of the fire extinguisher 51 and the fine water mist fire extinguishing device 52 can be taken out to extinguish the fire. In addition, the protective shell 3, as a carrying platform, can also be loaded with other devices for fire extinguishing, which will not be described in detail here.

[0045] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or basic features of the present invention. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the present invention.

[0046] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back...), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0047] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the utility model, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or suggesting their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, "multiple" means more than two. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the utility model.

Claims

1. A push-type fire truck, characterized in that: include: Chassis frame (1); A four-wheel steering device (2) is arranged on the chassis frame (1); A protective shell (3) is fixedly arranged on the chassis frame (1) and covers the four-wheel steering device (2), and is used to protect the transmission components of the four-wheel steering device (2); An operating rod (4), one end of which is arranged on the four-wheel steering device (2) and the other end of which extends to the outside of the protective shell (3), and is used to drive the four-wheel steering device (2) and adjust the steering angle; A fire extinguishing assembly (5) is arranged on the top surface of the protective shell (3).

2. A push-type fire truck as claimed in claim 1, characterized in that: The four-wheel steering device (2) comprises an L-shaped connecting rod (21) rotatably arranged at the four corners of the chassis frame (1), a roller (22) rotatably arranged at one end of the L-shaped connecting rod (21), a first connecting rod (23) slidably arranged on the chassis frame (1), a second connecting rod (24) having one end hinged to the L-shaped connecting rod (21) and the other end hinged to the first connecting rod (23), and a driving assembly (25) for driving the two first connecting rods (23) to slide synchronously.

3. A push-type fire truck as claimed in claim 2, characterized in that: The chassis frame (1) is provided with a mounting rod (6) for mounting the first connecting rod (23), a sliding groove (7) is provided on the top surface of the mounting rod (6), and a sliding block (8) cooperating with the sliding groove (7) is fixedly provided at the bottom of the first connecting rod (23).

4. A push-type fire truck as claimed in claim 3, characterized in that: One side of the first connecting rod (23) is provided with teeth, and the driving assembly (25) comprises a mounting frame (251) fixedly arranged at both ends of the chassis frame (1), a gear (252) rotatably arranged on the mounting frame (251) and meshing with the first connecting rod (23), and a synchronization rod (253) symmetrically arranged on the two gears (252).

5. A push-type fire truck as claimed in claim 4, characterized in that: One end of the operating rod (4) is rotatably mounted on the mounting frame (251); the operating rod (4) and the gear (252) share a rotating shaft and are transmission-connected to the rotating shaft.

6. A push-type fire truck as claimed in claim 5, characterized in that: A handle (9) is fixedly provided on one end of the operating rod (4) extending out of the protective shell (3).

7. A push-type fire truck as claimed in claim 6, characterized in that: A partition plate (10) is fixedly arranged on the protective shell (3), a support rod (11) is fixedly arranged on the operating rod (4), and the other end of the support rod (11) is hinged on the partition plate (10).

8. A push-type fire truck as claimed in claim 7, characterized in that: The rotation axis of the support rod (11) is coaxial with the rotation axis of the operating rod (4).

9. A push-type fire truck as claimed in claim 1, characterized in that: The fire extinguishing assembly (5) comprises a fire extinguisher (51) and a fine water mist fire extinguishing device (52) arranged on the top surface of the protective shell (3).

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