Lifting and spraying fire fighting truck

Abstract

The utility model relates to a lifting and spraying fire truck. The lifting and spraying fire truck comprises a walking mechanism, a frame, a supporting rotary table, a working arm frame, a working oil cylinder, a water tank, a balance weight connecting rod and a telescopic rod. After the water tank is filled with water, fire-fighting water can be provided for fire-fighting operation, and the water tank can also be used as a balance weight. Specifically, after being filled with water, the water tank is driven by the supporting rotary table to rotate to the position above the vehicle frame, the water tank is driven to be far away from the supporting rotary table through the extension effect of the telescopic rod, and therefore the stabilizing moment of the working arm frame is increased, and in the fire fighting operation process of the working arm frame, the lifting and spraying fire fighting truck can be kept stable even though no supporting legs are used for supporting. Therefore, the lifting and spraying fire fighting truck can be kept stable without being supported by the supporting legs during fire fighting operation, the occupied space of the lifting and spraying fire fighting truck is saved due to the absence of the supporting legs, the lifting and spraying fire fighting truck can perform fire fighting operation in a narrow site, and the manufacturing cost of the lifting and spraying fire fighting truck is also reduced.

Description

Technical Field

[0001] This utility model relates to the field of fire truck technology, and in particular to a fire truck with a spray nozzle. Background Technology

[0002] Existing tracked fire trucks with outriggers on the market all require the addition of outriggers during firefighting operations. Therefore, traditional tracked fire trucks with outriggers have relatively high requirements for the operating site. Furthermore, the outriggers also require corresponding space during firefighting operations, which not only results in higher production costs but also prevents fire trucks from carrying out firefighting operations in some narrow areas. Utility Model Content

[0003] Therefore, it is necessary to provide a fire truck that can operate without outriggers, thus adapting to narrow work areas and reducing manufacturing costs.

[0004] A fire truck with a spray nozzle includes:

[0005] Walking mechanism;

[0006] The frame is mounted on the traveling mechanism;

[0007] A support turntable is rotatably mounted on the vehicle frame at one end, and has a first rotatable mounting point, a second rotatable mounting point, and a third rotatable mounting point at the other end; the end of the support turntable closest to the vehicle frame has a fourth rotatable mounting point.

[0008] The boom has a first rotating connection point and a second rotating connection point spaced apart along its longitudinal direction; the first rotating connection point is located at the rear end of the boom structure and is rotatably connected to the first rotating mounting point.

[0009] The working cylinder is rotatably connected at both ends to the second rotary connection point and the second rotary mounting point, respectively.

[0010] The water tank has a third rotating connection point; the side wall of the water tank is provided with a water inlet and a water outlet;

[0011] The counterweight connecting rod is rotatably connected at both ends to the third rotatable mounting point and the third rotatable connection point, respectively.

[0012] The telescopic rod is rotatably connected at both ends to the third rotatable connection point and the fourth rotatable mounting point, respectively; the telescopic rod is constructed to be extendable and retractable along its length.

[0013] In one embodiment, a rotary drive is further included; the rotary drive is kinetically connected to the support turntable and is used to provide a rotary drive for driving the support turntable to rotate.

[0014] In one embodiment, one end of the support turntable is rotatably connected to the vehicle frame via a slewing bearing.

[0015] In one embodiment, the first rotating mounting point, the second rotating mounting point, and the second rotating connection point are arranged in a triangular pattern; the second rotating mounting point is located between the first rotating mounting point and the second rotating connection point.

[0016] In one embodiment, the third rotating mounting point, the fourth rotating mounting point, and the third rotating connection point are arranged in a triangular pattern; the third rotating connection point is located between the third rotating mounting point and the fourth rotating mounting point.

[0017] In one embodiment, a water pipe is also included, which is installed on the support turntable; one end of the water pipe is connected to the water inlet, and the other end is used to connect to an external water source.

[0018] In one embodiment, the support turntable is a hollow structure; a first through hole is formed on the support turntable near the water tank; the water pipe is installed inside the support turntable; one end of the water pipe passes through the first through hole and communicates with the water inlet, and the other end passes through a through hole formed on the frame or on the support turntable near the walking mechanism.

[0019] In one embodiment, the telescopic rod is a hydraulic cylinder; the two ends of the hydraulic cylinder are respectively rotatably connected to the third rotatable connection point and the fourth rotatable mounting point.

[0020] In one embodiment, a sealing plug is also included; the drain outlet is located at the bottom of the water tank; the sealing plug is detachably installed at the drain outlet to seal the drain outlet.

[0021] When firefighting operations are required, the water tank of the aforementioned fire truck is first filled with water. Then, the support turntable is rotated to position the water tank above the vehicle frame, and the boom is rotated to the rear of the frame. The boom is then driven by the hydraulic cylinders to rotate around the first rotating mounting point until the front end of the boom reaches the predetermined working position. At this point, the water in the tank can be used for firefighting operations. During firefighting operations, as the water in the tank decreases, the telescopic boom gradually extends to drive the water tank to move away from the support turntable, ensuring force balance during the firefighting process. Therefore, after the water tank is filled with water, it rotates to the top of the vehicle frame, and the extension of the telescopic rod moves the water tank away from the support turntable, thereby increasing the stabilizing torque of the working boom. This allows the working boom to remain stable even without outriggers during firefighting operations. Thus, the aforementioned firefighting vehicle can remain stable without outriggers during firefighting operations. The absence of outriggers saves space, enabling the firefighting vehicle to operate in narrow spaces and reducing its manufacturing cost. Attached Figure Description

[0022] Figure 1 This is a structural schematic diagram of the fire truck in a preferred embodiment of the present invention.

[0023] Explanation of reference numerals in the detailed embodiments: 100, fire truck with lifting and spraying mechanism; 110, walking mechanism; 120, vehicle frame; 130, support turntable; 131, first rotating mounting point; 132, second rotating mounting point; 133, third rotating mounting point; 134, fourth rotating mounting point; 140, working boom; 141, first rotating connection point; 142, second rotating connection point; 150, working cylinder; 160, working water tank; 161, third rotating connection point; 170, counterweight connecting rod; 180, telescopic rod; 190, water pipe. Detailed Implementation

[0024] To facilitate understanding of this utility model, a more complete description will be given below with reference to the accompanying drawings. Preferred embodiments of this utility model are shown in the drawings. However, this utility model can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of the disclosure of this utility model.

[0025] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0026] When describing positional relationships, unless otherwise specified, when an element is referred to as being "on" another element, it may be directly on the other element or there may be intermediate elements. It is also understood that when an element is referred to as being "between" two elements, it may be the only one between the two elements, or there may be one or more intermediate elements.

[0027] When using the terms “including,” “having,” and “comprising” as described herein, another component may be added unless explicitly qualifying terms such as “only,” “consisting of,” etc. are used. Unless otherwise stated, singular terms may include plural forms and should not be construed as having a quantity of one.

[0028] Figure 1 The diagram illustrates the structure of a fire truck with a spray nozzle according to one embodiment of the present invention. For ease of explanation, the accompanying drawings only show structures relevant to the embodiments of the present invention.

[0029] Please see Figure 1 The preferred embodiment of the fire truck 100 includes a walking mechanism 110, a frame 120, a support turntable 130, a working boom 140, a working cylinder 150, a water tank 160, a counterweight connecting rod 170, and a telescopic rod 180.

[0030] The frame 120 is mounted on the traveling mechanism 110. The traveling mechanism 110 can be a tracked traveling mechanism 110 or a wheeled traveling mechanism 110. Specifically, in this embodiment, the traveling mechanism 110 is a tracked traveling mechanism 110.

[0031] One end of the support turntable 130 is rotatably mounted on the frame 120, and the other end has a first rotating mounting point 131, a second rotating mounting point 132, and a third rotating mounting point 133. The end of the support turntable 130 closest to the frame 120 has a fourth rotating mounting point 134. When the fire truck 100 is on a horizontal plane, the first rotating mounting point 131, the second rotating mounting point 132, and the third rotating mounting point 133 are all located at the upper end of the support turntable 130, and the fourth rotating mounting point 134 is located at the lower end of the support turntable 130.

[0032] The boom 140 has a first rotating connection point 141 and a second rotating connection point 142 spaced apart along its longitudinal direction. The first rotating connection point 141 is located at the rear end of the boom 140 structure and is rotatably connected to the first rotating mounting point 131.

[0033] The two ends of the working cylinder 150 are respectively rotatably connected to the second rotary connection point 142 and the second rotary mounting point 132.

[0034] The water tank 160 has a third rotatable connection point 161. Specifically, the third rotatable connection point 161 is located at the top of the water tank 160. The side wall of the water tank 160 has an inlet (not shown) and an outlet (not shown). The inlet is used to add water to the water tank 160, and the outlet is used to drain the water from the water tank 160.

[0035] The two ends of the counterweight connecting rod 170 are respectively rotatably connected to the third rotating mounting point 133 and the third rotating connection point 161.

[0036] The two ends of the telescopic rod 180 are rotatably connected to the third rotating connection point 161 and the fourth rotating mounting point 134, respectively. The telescopic rod 180 is constructed to be extendable and retractable along its length. The telescopic rod 180 can be an electric telescopic rod 180, an electric cylinder, a hydraulic cylinder, a scissor-type telescopic mechanism, a linkage mechanism, or any other structure capable of extending and retracting in the direction in which the fourth rotating mounting point 134 and the third rotating connection point 161 point to each other.

[0037] Specifically, the telescopic boom 180 is a hydraulic cylinder. Both ends of the hydraulic cylinder are rotatably connected to the third rotary connection point 161 and the fourth rotary mounting point 134, respectively. Using a hydraulic cylinder for the telescopic boom 180 not only simplifies its structure but also allows the hydraulic system of the fire truck 100 to be connected to the hydraulic cylinder, providing hydraulic drive for the movement of the water tank 160 and thus improving the reliability of the telescopic boom 180's drive over the water tank 160.

[0038] When the fire truck 100 needs to carry out firefighting operations, first fill the water tank 160 with water; then rotate the support turntable 130 (generally rotate 180 degrees, but other suitable angles can be selected according to the site conditions, as long as the water tank 160 can be rotated above the frame 120 during firefighting operations) to rotate the water tank 160 above the frame 120 and rotate the boom 140 to the rear of the frame 120; then use the working cylinder 150 to drive the boom 140 to rotate around the first rotating installation point 131 until the front end of the boom 140 reaches the predetermined working position; then the water in the water tank 160 can be used for firefighting operations.

[0039] Of course, during firefighting operations, as the water in the water tank 160 decreases, the telescopic rod 180 gradually extends, driving the water tank 160 to move gradually away from the support turntable 130 with the help of the counterweight link 170, thus ensuring force balance during firefighting operations. In this way, the water tank 160 can not only be used to provide firefighting water, but also as a counterweight for vehicles during firefighting operations.

[0040] After the firefighting operation is completed, the boom 140 is retracted, causing the telescopic boom 180 to slowly shorten, driving the water tank 160 to move slowly towards the support turntable 130 until the water tank 160 reaches its initial position. Then, the support turntable 130 is rotated to rotate the water tank 160 to the rear of the vehicle frame 120, and the boom 140 is rotated to the top of the vehicle frame 120. The remaining water in the water tank 160 can then be drained through the drain outlet, making the fire truck 100 more convenient and flexible during normal operation.

[0041] Therefore, after the water tank 160 is filled with water, it rotates to the top of the frame 120, and the extension of the telescopic rod 180 moves the water tank 160 away from the support turntable 130, thereby increasing the stabilizing torque of the working boom 140. This allows the working boom 140 to remain stable during firefighting operations, even without the support of outriggers. Thus, the aforementioned firefighting truck 100 can remain stable without the need for outriggers during firefighting operations. The absence of outriggers saves space occupied by the firefighting truck 100, enabling it to perform firefighting operations in narrow spaces and reducing its manufacturing cost.

[0042] In some embodiments, the fire truck 100 further includes a rotary drive (not shown). The rotary drive is connected to the support turntable 130 and provides a drive mechanism for rotating the support turntable 130. The rotary drive is a rotary motor, hydraulic motor, or the like. Thus, the rotary drive provides power for the rotation of the support turntable 130, facilitating the rotation of the water tank 160 and the boom 140 before and after firefighting operations, saving time and effort, and effectively improving the ease of use of the fire truck 100.

[0043] In some embodiments, one end of the support turntable 130 is rotatably connected to the frame 120 via a slewing bearing (not shown). The slewing bearing, also called a slewing bearing bearing, reduces the coefficient of friction between the support turntable 130 and the frame 120 by providing a slewing bearing between them, ensuring the rotational accuracy of the support turntable 130, improving the smoothness of relative rotation between the support turntable 130 and the frame 120, and preventing jamming and inability to rotate relative to each other.

[0044] In some embodiments, the first rotating mounting point 131, the second rotating mounting point 132, and the second rotating connection point 142 are arranged in a triangular pattern. The second rotating mounting point 132 is located between the first rotating mounting point 131 and the second rotating connection point 142. This arrangement ensures that the connection points between the working cylinder 150, the working boom 140, and the supporting turntable are in a stable triangular distribution, improving the structural stability between the working cylinder 150, the working boom 140, and the supporting turntable 130, and ensuring greater stability during the lifting, retraction, and firefighting operations of the working boom 140.

[0045] In some embodiments, the third rotating mounting point 133, the fourth rotating mounting point 134, and the third rotating connection point 161 are arranged in a triangular pattern. The third rotating connection point 161 is located between the third rotating mounting point 133 and the fourth rotating mounting point 134. This arrangement ensures that the connection points between the support turntable 130, the telescopic rod 180, the counterweight connecting rod 170, and the water tank 160 are stably distributed in a triangular pattern, improving the structural stability of the support turntable 130, the telescopic rod 180, the water tank 160, and the counterweight connecting rod 170. This also ensures the stability of the water tank 160 during movement towards or away from the support turntable 130, thereby improving the overall stability of the fire truck 100.

[0046] In some embodiments, the fire truck 100 also includes a water pipe 190 installed on the support turntable 130. One end of the water pipe 190 is connected to a water inlet, and the other end is used to connect to an external water source. In actual use, when water needs to be added to the water tank 160, the operator can directly connect the water pipe 190 to the external water source to quickly fill the water tank 160, which is quick and convenient and improves the ease of use of the fire truck 100.

[0047] Furthermore, in some embodiments, the support turntable 130 is a hollow structure. A first through hole (not shown) is formed in the support turntable 130 near the water tank 160. The water pipe 190 is installed inside the support turntable 130. One end of the water pipe 190 passes through the first through hole and communicates with the water inlet, and the other end passes through a through hole formed in the frame 120 or in the support turntable 130 near the traveling mechanism 110 (not shown). In this way, installing the water pipe 190 inside the support turntable 130 reduces the exposure of the water pipe 190, which not only makes the overall appearance of the fire truck 100 neater and more aesthetically pleasing, but also reduces the probability of the water pipe 190 being hooked or worn during use, thus protecting the water pipe 190 and helping to extend its service life.

[0048] Of course, in other embodiments, the water pipe 190 can also be fixed to the outside of the supporting turntable 130, as long as the water pipe 190 can be fixed.

[0049] In some embodiments, the fire truck 100 also includes a sealing plug (not shown). The drain outlet is located at the bottom of the water tank 160. The sealing plug is detachably installed at the drain outlet to seal it. Positioning the drain outlet at the bottom of the water tank 160 allows for complete drainage of all water within the tank. The sealing plug is used to block and seal the drain outlet when drainage is not required, preventing water leakage from the tank and preventing external impurities and dust from entering the tank.

[0050] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0051] The above-described embodiments are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the inventive concept, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A fire truck with a lifting and spraying function, characterized in that, include: Walking mechanism; The frame is mounted on the traveling mechanism; A support turntable is rotatably mounted on the vehicle frame at one end, and has a first rotatable mounting point, a second rotatable mounting point, and a third rotatable mounting point at the other end; The support turntable has a fourth rotating mounting point at one end near the vehicle frame; The boom has a first rotating connection point and a second rotating connection point spaced apart along its longitudinal direction; the first rotating connection point is located at the rear end of the boom structure and is rotatably connected to the first rotating mounting point. The working cylinder is rotatably connected at both ends to the second rotary connection point and the second rotary mounting point, respectively. The water tank has a third rotating connection point; the side wall of the water tank is provided with a water inlet and a water outlet; The counterweight connecting rod is rotatably connected at both ends to the third rotatable mounting point and the third rotatable connection point, respectively. The telescopic rod is rotatably connected at both ends to the third rotatable connection point and the fourth rotatable mounting point, respectively; the telescopic rod is constructed to be extendable and retractable along its length.

2. The fire truck with a lifting and spraying nozzle according to claim 1, characterized in that, It also includes a rotary drive component; the rotary drive component is connected to the support turntable and is used to provide a rotary drive component for driving the support turntable to rotate.

3. The fire truck with a lifting and spraying function according to claim 1, characterized in that, One end of the support turntable is rotatably connected to the vehicle frame via a slewing bearing.

4. The fire truck with a lifting and spraying function according to claim 1, characterized in that, The first rotating mounting point, the second rotating mounting point, and the second rotating connection point are arranged in a triangle; the second rotating mounting point is located between the first rotating mounting point and the second rotating connection point.

5. The fire truck with a lifting and spraying nozzle according to claim 1, characterized in that, The third rotating mounting point, the fourth rotating mounting point, and the third rotating connection point are arranged in a triangular pattern; the third rotating connection point is located between the third rotating mounting point and the fourth rotating mounting point.

6. The fire truck with a spray nozzle according to claim 1, characterized in that, It also includes a water pipe installed on the support turntable; one end of the water pipe is connected to the water inlet, and the other end is used to connect to an external water source.

7. The fire truck with a spray nozzle according to claim 6, characterized in that, The supporting turntable has a hollow structure; a first through hole is formed on the supporting turntable near the water tank; the water pipe is installed inside the supporting turntable; one end of the water pipe passes through the first through hole and communicates with the water inlet, and the other end passes through a through hole formed on the frame or on the supporting turntable near the walking mechanism.

8. The fire truck with a lifting and spraying nozzle according to claim 1, characterized in that, The telescopic rod is a hydraulic cylinder; the two ends of the hydraulic cylinder are respectively rotatably connected to the third rotatable connection point and the fourth rotatable mounting point.

9. The fire truck with a lifting and spraying nozzle according to claim 1, characterized in that, It also includes a sealing plug; the drain outlet is located at the bottom of the water tank; the sealing plug is detachably installed at the drain outlet to seal the drain outlet.

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