Machine head belt arranging mechanism, water hose winding and unwinding device and water hose fire fighting truck

Abstract

The utility model relates to a machine head belt arranging mechanism, a water hose winding and unwinding device and a water hose fire fighting truck. The machine head belt arranging mechanism comprises a mechanism body, a front-end mounting seat, a rear-end mounting seat, a front-end servo motor, a rear-end servo motor and a controller. The front-end mounting base and the rear-end mounting base are arranged in a spaced mode in the first direction. The two ends of the mechanism body are installed on the front end installation base and the rear end installation base in a sliding mode respectively. The controller is electrically connected with the front-end servo motor and the rear-end servo motor and used for controlling the front-end servo motor and the rear-end servo motor to drive the two ends of the mechanism body to synchronously translate in the second direction perpendicular to the first direction. The machine head belt arranging mechanism does not need to adopt a transmission structure with a long distance and a complicated structure, and effectively solves the problems of complicated mechanical structure, higher manufacturing and mounting difficulty, more fault points, difficulty in maintenance and the like caused by adopting a transmission mode of a hydraulic motor, a reverser, a long-distance transmission shaft, a reverser and a gear rack in a traditional water elimination fire fighting truck.

Description

Technical Field

[0001] The utility model relates to the technical field of water hose fire fighting vehicles, in particular to a head belt arrangement mechanism, a water hose retracting and releasing device and a water hose fire fighting vehicle. Background Art

[0002] The hose fire truck is a special-purpose fire truck, which is mainly used to provide fire hoses for rescue to the main combat fire truck, and recycle the hoses and store them in a standby state after the rescue. It includes a drivable walking chassis, a driver's cab, a hose storage compartment, and a hose laying and collecting mechanism. A hose sorting device is arranged under the hose laying and collecting mechanism. During fire rescue, the operator opens the hose storage compartment, takes out the hose, and places one end of the hose at the first working position (such as the fire water source supply point). As the hose fire truck moves, the hose in the hose storage compartment is laid along the road to the second working position (such as the rescue fire extinguishing location), completing the laying of the hose. After the rescue is completed, the hose fire truck moves from the first working position to the second working position (or vice versa), and through the hose laying and collecting mechanism, the hose sorting device and other components, the hose is orderly recovered and stored in the hose storage compartment for the next use.

[0003] The hoses are stored in partitions in the storage compartment. In order to ensure that the hoses can be smoothly retrieved or laid, it is necessary to control the belt laying and taking-up mechanism to move left and right relative to the storage compartment to ensure that the hoses can move in a straight line during the belt taking-up and laying process. Traditional hose fire trucks usually use a transmission method of hydraulic motor + commutator + long-distance drive shaft + commutator + rack and pinion to drive the front and rear ends of the belt laying and taking-up mechanism to move left and right at the same time. However, this structure that uses the same power device to drive the front and rear ends of the belt laying and taking-up mechanism to move has problems such as complex mechanical structure, difficult manufacturing and installation, many failure points, and difficult maintenance. Utility Model Content

[0004] Based on this, it is necessary to provide a head belt-manipulating mechanism, a water hose retracting and releasing device, and a water hose fire truck which are simple in structure and easy to install and maintain.

[0005] A head tape unwinding mechanism comprises a mechanism body, a front end mounting seat, a rear end mounting seat, a front end servo motor, a rear end servo motor and a controller; the front end mounting seat and the rear end mounting seat are spaced apart along a first direction; the two ends of the mechanism body are slidably mounted on the front end mounting seat and the rear end mounting seat respectively; the front end servo motor and the rear end servo motor are respectively transmission-connected to the two ends of the mechanism body; the controller is respectively electrically connected to the front end servo motor and the rear end servo motor, and is used to control the front end servo motor and the rear end servo motor to respectively drive the two ends of the mechanism body to translate synchronously along a second direction perpendicular to the first direction.

[0006] In one embodiment, it further comprises a front transverse shift rack, a front transverse shift gear, a rear transverse shift rack and a rear transverse shift gear; the front transverse shift rack and the rear transverse shift rack are respectively mounted on the front mounting seat and the rear mounting seat, and are arranged parallel and spaced apart along the first direction;

[0007] The front end transverse shift gear and the rear end transverse shift gear are rotatably mounted on the two ends of the mechanism body, and are respectively meshed with the front end transverse shift rack and the rear end transverse shift rack; the front end servo motor and the rear end servo motor are respectively transmission connected with the front end transverse shift gear and the rear end transverse shift gear.

[0008] In one of the embodiments, a front-end mounting plate and a rear-end mounting plate are respectively fixed at both ends of the mechanism body; the front-end servo motor and the rear-end servo motor are respectively mounted on the front-end mounting plate and the rear-end mounting plate; the front-end transverse shift gear and the rear-end transverse shift gear are respectively rotatably mounted on the front-end mounting plate and the rear-end mounting plate, and are respectively transmission-connected with the output shaft of the front-end servo motor and the output shaft of the rear-end servo motor.

[0009] In one of the embodiments, it also includes a front end screw, a front end transverse nut, a rear end screw and a rear end transverse nut; the front end screw and the rear end screw are rotatably mounted on the front end mounting seat and the rear end mounting seat, respectively, and are arranged parallel and spaced along the first direction; the front end transverse nut and the rear end transverse nut are respectively fixed at both ends of the mechanism body, and are respectively screwed on the front end screw and the rear end screw; the front end servo motor and the rear end servo motor are respectively connected to the front end screw and the rear end screw.

[0010] In one of the embodiments, it also includes a front-end self-locking turbine reduction box and a rear-end self-locking turbine reduction box; the front-end servo motor is connected to the front-end transmission of the mechanism body through the front-end self-locking turbine reduction box; the rear-end servo motor is connected to the rear-end transmission of the mechanism body through the rear-end self-locking turbine reduction box.

[0011] In one of the embodiments, it also includes a front guide rail and a rear guide rail; the front guide rail and the rear guide rail are respectively installed on the front mounting seat and the rear mounting seat, and are arranged parallel and spaced along the first direction; the two ends of the mechanism body are respectively slidably installed on the front guide rail and the rear guide rail.

[0012] In one embodiment, both ends of the front guide rail are provided with front limit blocks; and both ends of the rear guide rail are provided with rear limit blocks.

[0013] In one embodiment, it also includes a plurality of detection members; the plurality of detection members are arranged on the front end mounting seat or the rear end mounting seat at intervals along the second direction; the detection members are communicatively connected to the controller and are used to send a trigger signal to the controller when the mechanism body is detected; the controller is used to control the front end servo motor and the rear end servo motor to stop working when receiving the trigger signal.

[0014] In one embodiment, it includes a head tape taking-up device and the head tape organizing mechanism as described above; the rear end of the head tape taking-up device is installed at the front end of the mechanism body.

[0015] A water hose fire truck comprises a vehicle body and the water hose retracting and releasing device as described above; the front end mounting seat and the rear end mounting seat are both mounted on the vehicle body.

[0016] The above-mentioned head belt-straightening mechanism, water hose retracting and unretracting device and water hose fire truck have a first direction that is consistent with the driving direction of the water hose fire truck, and a second direction that is the left and right direction of the water hose fire truck. During the process of laying or retracting the belt, the front-end servo motor and the rear-end servo motor are used to drive the two ends of the mechanism body to move synchronously, respectively, until the mechanism body moves to a position that can ensure the linear movement of the water hose. Therefore, the front-end servo motor is only used to drive the front-end movement of the mechanism body, and the rear-end servo motor is only used to drive the rear-end movement of the mechanism body. There is no need to adopt a transmission structure with a long distance and a complex structure, which effectively solves the problems of complex mechanical structure, greater difficulty in manufacturing and installation, many fault points, and difficult maintenance caused by the transmission method of hydraulic motor + commutator + long-distance transmission shaft + commutator + gear rack used in traditional water fire trucks. Therefore, the above-mentioned head belt-straightening mechanism has the advantages of simple structure, low difficulty in manufacturing and installation, and simple and convenient maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a structural diagram of the head belt sorting mechanism in a preferred embodiment of the utility model;

[0018] Figure 2 for Figure 1 An enlarged view of the rear end of the head belt unwinding mechanism is shown;

[0019] Figure 3 for Figure 1 An enlarged view of the front end of the machine head belt-straightening mechanism is shown.

[0020] Explanation of reference numerals: 100, head belt-sorting mechanism; 110, mechanism body; 120, front end mounting seat; 130, rear end mounting seat; 140, front end servo motor; 150, rear end servo motor; 161, front end transverse shift rack; 162, front end transverse shift gear; 171, rear end transverse shift rack; 172, rear end transverse shift gear; 180, front end mounting plate; 190, rear end mounting plate; 201, front end self-locking turbine reducer; 202, rear end self-locking turbine reducer; 203, front end guide rail; 204, rear end guide rail; 205, front end limit block; 206, rear end limit block; 10, first direction; 20, second direction. DETAILED DESCRIPTION

[0021] In order to facilitate the understanding of the present invention, the present invention will be described more comprehensively with reference to the accompanying drawings. The accompanying drawings provide preferred embodiments of the present invention. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the present invention more thorough and comprehensive.

[0022] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art in the technical field of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0023] When describing positional relationships, unless otherwise specified, when an element is referred to as being "on" another element, it can be directly on the other element or there can be an intermediate element. It is also understood that when an element is referred to as being "between" two elements, it can be the only one between the two elements, or there can be one or more intermediate elements.

[0024] In the case of using “including”, “having”, and “comprising” described herein, another component may be added unless a clear limiting term such as “only”, “consisting of”, etc. is used. Unless mentioned otherwise, a term in the singular form may include a plural form and should not be understood as being one in number.

[0025] In addition, the drawings are not drawn to a 1:1 scale, and the relative sizes of the elements in the drawings are drawn only as examples and not necessarily according to the true scale.

[0026] The utility model provides a machine head belt-strapping mechanism, a water hose retracting and releasing device, and a water hose fire truck. The water hose fire truck comprises a vehicle body and a water hose retracting and releasing device, and the water hose retracting and releasing device is installed on the vehicle body. The water hose retracting and releasing device comprises a machine head belt-strapping mechanism and a machine head belt-strapping mechanism, the rear end of the machine head belt-strapping mechanism is installed at the front end of the machine head belt-strapping mechanism, and the machine head belt-strapping mechanism is installed on the vehicle body, so that the water hose retracting and releasing device is installed on the vehicle body.

[0027] Of course, it can be understood that in other embodiments, the water hose retracting and unreeling device can also be arranged on other water hose vehicles that need to lay and retract the hose.

[0028] See also Figures 1 to 3 In a preferred embodiment of the utility model, the head belt unwinding mechanism 100 includes a mechanism body 110, a front end mounting seat 120, a rear end mounting seat 130, a front end servo motor 140, a rear end servo motor 150 and a controller (not shown). The front end mounting seat 120 and the rear end mounting seat 130 are arranged at intervals along the first direction 10. The two ends of the mechanism body 110 are slidably mounted on the front end mounting seat 120 and the rear end mounting seat 130, respectively. The front end servo motor 140 and the rear end servo motor 150 are respectively connected to the two ends of the mechanism body 110. The controller is electrically connected to the front end servo motor 140 and the rear end servo motor 150, respectively, and is used to control the front end servo motor 140 and the rear end servo motor 150 to rotate synchronously, so as to drive the two ends of the mechanism body 110 to translate synchronously along the second direction 20 perpendicular to the first direction 10. Among them, the controller can be a whole vehicle control system of a hose fire truck, or it can be a control device independent of the whole vehicle control system.

[0029] The first direction 10 is the direction consistent with the driving direction of the hose fire truck, and the second direction 20 is the left-right direction perpendicular to the driving direction of the hose fire truck. In the hose fire truck, the front mounting seat 120 and the rear mounting seat 130 are installed on the vehicle body at intervals along the first direction 10. The rear mounting seat 130 is installed on the belt storage box in the hose fire truck, and the front mounting seat 120 can be installed on the belt storage box or installed and fixed on the supporting structure on the chassis of the hose fire truck.

[0030] In actual application, when it is necessary to translate the head belt-straightening mechanism 100 to a specified position, the controller simultaneously controls the front-end servo motor 140 and the rear-end servo motor 150 to drive the two ends of the mechanism body 110 to translate synchronously along the left and right directions of the hose fire truck, until the mechanism body 110 moves to a position that can ensure the linear movement of the hose. Therefore, the front-end servo motor 140 is only used to drive the front-end movement of the mechanism body 110, and the rear-end servo motor 150 is only used to drive the rear-end movement of the mechanism body 110. There is no need to adopt a transmission structure with a long distance and a complex structure, which effectively solves the problems of complex mechanical structure, greater difficulty in manufacturing and installation, multiple fault points, and difficult maintenance caused by the transmission method of hydraulic motor + commutator + long-distance transmission shaft + commutator + gear rack used in traditional water fire trucks. Therefore, the above-mentioned head belt-straightening mechanism 100 has the advantages of simple structure, low difficulty in manufacturing and installation, and simple and convenient maintenance.

[0031] In one embodiment, the head tape handling mechanism 100 further includes a front transverse shift rack 161, a front transverse shift gear 162, a rear transverse shift rack 171, and a rear transverse shift gear 172. The front transverse shift rack 161 and the rear transverse shift rack 171 are respectively mounted on the front mounting seat 120 and the rear mounting seat 130, and are arranged parallel and spaced apart along the first direction 10.

[0032] The front transverse gear 162 and the rear transverse gear 172 are rotatably mounted on both ends of the mechanism body 110, and are respectively meshed with the front transverse rack 161 and the rear transverse rack 171. The front servo motor 140 and the rear servo motor 150 are respectively connected to the front transverse gear 162 and the rear transverse gear 172.

[0033] The front transverse gear 162 and the front transverse rack 161, the rear transverse gear 172 and the rear transverse rack 171, all constitute a gear rack transmission mechanism, which is used to convert the rotational motion output by the front servo motor 140 and the rear servo motor 150 into the linear motion of the mechanism body 110. Moreover, the gear rack transmission method not only further shortens the transmission distance of the servo motor, but also has the advantages of simple structure, large power transmission, stable operation, high reliability, etc., making the front and rear structures of the head belt sorting mechanism 100 more compact and simple, reducing the difficulty of installation and improving the ease of maintenance.

[0034] Specifically, a front mounting plate 180 and a rear mounting plate 190 are fixed to both ends of the mechanism body 110. The front servo motor 140 and the rear servo motor 150 are respectively mounted on the front mounting plate 180 and the rear mounting plate 190. The front transverse gear 162 and the rear transverse gear 172 are respectively rotatably mounted on the front mounting plate 180 and the rear mounting plate 190, and are respectively connected to the output shaft of the front servo motor 140 and the output shaft of the rear servo motor 150.

[0035] The front mounting plate 180 and the rear mounting plate 190 can be respectively fixed to the front and rear ends of the mechanism body 110 by welding, screwing, etc., and the setting of the front mounting plate 180 and the rear mounting plate 190 facilitates the installation of the front servo motor 140, the rear servo motor 150, the front transverse gear 162 and the rear transverse gear 172, further reducing the installation difficulty. At the same time, the front servo motor 140, the rear servo motor 150 and the corresponding transmission structure do not need to be installed on the front mounting seat 120 and the rear mounting seat 130, which is conducive to reducing the area occupied by the front mounting seat 120 and the rear mounting seat 130.

[0036] In another embodiment, the head tape unwinding mechanism 100 further includes a front screw (not shown), a front transverse nut (not shown), a rear screw (not shown) and a rear transverse nut (not shown). The front screw and the rear screw are rotatably mounted on the front mounting seat 120 and the rear mounting seat 130, respectively, and are arranged parallel and spaced along the first direction 10. The front transverse nut and the rear transverse nut are respectively fixed to the two ends of the mechanism body 110, and are respectively screwed to the front screw and the rear screw. The front servo motor 140 and the rear servo motor 150 are respectively connected to the front screw and the rear screw.

[0037] Thus, the front lead screw and the front transverse nut form a lead screw mechanism for converting the rotational motion output by the front servo motor 140 into the linear motion of the front end of the mechanism body 110; the rear lead screw and the rear transverse nut form a lead screw mechanism for converting the rotational motion output by the rear servo motor 150 into the linear motion of the rear end of the mechanism body 110. The lead screw transmission has the advantages of high transmission efficiency and high transmission accuracy, which is conducive to improving the translation accuracy of the head belt-straightening mechanism 100.

[0038] Of course, in some other embodiments, the front-end servo motor 140 and the rear-end servo motor 150 may also be connected to the mechanism body 110 through other transmission methods such as a chain transmission mechanism.

[0039] In some embodiments, the head belt-stripping mechanism 100 further includes a front self-locking turbine reduction box 201 and a rear self-locking turbine reduction box 202. The front servo motor 140 is connected to the front end of the mechanism body 110 through the front self-locking turbine reduction box 201. The rear servo motor 150 is connected to the rear end of the mechanism body 110 through the rear self-locking turbine reduction box 202.

[0040] In actual applications, when the head tape-straightening mechanism 100 translates to a preset position and stops, the front-end servo motor 140 and the front-end self-locking turbine reducer 201 cooperate with each other, and the rear-end servo motor 150 and the rear-end self-locking turbine reducer 202 cooperate with each other to lock the position of the head tape-straightening mechanism 100, thereby avoiding the head tape-straightening mechanism 100 from sliding left and right during the tape laying and taking-up process, and improving the stability and reliability of the tape laying and taking-up operation.

[0041] Specifically, when the front end mounting plate 180 and the rear end mounting plate 190 are respectively fixed to the two ends of the mechanism body 110, and a rack and pinion transmission is adopted, the front end self-locking turbine reducer 201 and the rear end self-locking turbine reducer 202 are respectively installed on the front end mounting plate 180 and the rear end mounting plate 190, making the structure at both ends of the head belt-stripping mechanism 100 more compact.

[0042] In some embodiments, the head tape arrangement mechanism 100 further includes a front guide rail 203 and a rear guide rail 204. The front guide rail 203 and the rear guide rail 204 are respectively mounted on the front mounting seat 120 and the rear mounting seat 130, and are arranged parallel and spaced along the first direction 10. Both ends of the mechanism body 110 are slidably mounted on the front guide rail 203 and the rear guide rail 204, respectively.

[0043] The front guide rail 203 and the rear guide rail 204 are used to respectively guide the movement trajectories of the two ends of the mechanism body 110 in the second direction 20 , which is beneficial to improving the translation accuracy of the mechanism body 110 in the second direction 20 .

[0044] Further, in some embodiments, both ends of the front guide rail 203 are provided with front limit blocks 205. Both ends of the rear guide rail 204 are provided with rear limit blocks 206. The front limit blocks 205 and the rear limit blocks 206 can be fixed on the front mounting seat 120 and the rear mounting seat 130, respectively, or can be fixed on the ends of the front guide rail 203 and the rear guide rail 204, respectively.

[0045] The provision of the front end limit block 205 and the rear end limit block 206 can prevent the mechanism body 110 from escaping from the front end track and / or the rear end track during translation, thereby improving the equipment safety and use safety of the head belt management mechanism 100.

[0046] In some embodiments, the head tape handling mechanism 100 further includes a plurality of detection members (not shown). The plurality of detection members are arranged on the front mounting seat 120 or the rear mounting seat 130 at intervals along the second direction 20. The detection members are connected to the controller for communication and are used to send a trigger signal to the controller when the mechanism body 110 is detected. The controller is used to control the front servo motor 140 and the rear servo motor 150 to stop working when receiving the trigger signal.

[0047] Among them, multiple detection components are arranged on the front end mounting seat 120 or the rear end mounting seat 130 at intervals along the second direction 20, and are respectively aligned with multiple areas in the belt storage compartment for storing water hoses, so as to ensure that the detection components can send a trigger signal when the mechanism body 110 is translated to a position aligned with the area in the belt storage compartment where the water hose is about to be retracted or released, so as to use the controller to control the front end servo motor 140 and the rear end servo motor 150 to accurately translate the mechanism body 110 into place.

[0048] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, 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.

[0049] The above embodiments only express several implementation methods of the utility model, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the utility model patent. It should be pointed out that, for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. A head tape sorting mechanism, characterized in that: It includes a mechanism body, a front-end mounting seat, a rear-end mounting seat, a front-end servo motor, a rear-end servo motor and a controller; the front-end mounting seat and the rear-end mounting seat are arranged at intervals along a first direction; the two ends of the mechanism body are slidably mounted on the front-end mounting seat and the rear-end mounting seat respectively; the front-end servo motor and the rear-end servo motor are respectively transmission-connected to the two ends of the mechanism body; the controller is respectively electrically connected to the front-end servo motor and the rear-end servo motor, and is used to control the front-end servo motor and the rear-end servo motor to respectively drive the two ends of the mechanism body to translate synchronously along a second direction perpendicular to the first direction.

2. The head tape unwinding mechanism according to claim 1, characterized in that: It also includes a front transverse rack, a front transverse gear, a rear transverse rack and a rear transverse gear; the front transverse rack and the rear transverse rack are respectively mounted on the front mounting seat and the rear mounting seat, and are arranged parallel and spaced apart along the first direction; The front end transverse shift gear and the rear end transverse shift gear are rotatably mounted on the two ends of the mechanism body, and are respectively meshed with the front end transverse shift rack and the rear end transverse shift rack; the front end servo motor and the rear end servo motor are respectively transmission connected with the front end transverse shift gear and the rear end transverse shift gear.

3. The head tape arrangement mechanism according to claim 2, characterized in that: A front-end mounting plate and a rear-end mounting plate are fixed to both ends of the mechanism body respectively; the front-end servo motor and the rear-end servo motor are mounted on the front-end mounting plate and the rear-end mounting plate respectively; the front-end transverse shift gear and the rear-end transverse shift gear are rotatably mounted on the front-end mounting plate and the rear-end mounting plate respectively, and are respectively transmission-connected with the output shaft of the front-end servo motor and the output shaft of the rear-end servo motor.

4. The head tape unwinding mechanism according to claim 1, characterized in that: It also includes a front end screw, a front end transverse nut, a rear end screw and a rear end transverse nut; the front end screw and the rear end screw are respectively rotatably mounted on the front end mounting seat and the rear end mounting seat, and are arranged parallel and spaced along the first direction; the front end transverse nut and the rear end transverse nut are respectively fixed at both ends of the mechanism body, and are respectively screwed on the front end screw and the rear end screw; the front end servo motor and the rear end servo motor are respectively connected to the front end screw and the rear end screw.

5. The head tape arrangement mechanism according to claim 1, characterized in that: It also includes a front-end self-locking turbine reduction box and a rear-end self-locking turbine reduction box; the front-end servo motor is connected to the front-end transmission of the mechanism body through the front-end self-locking turbine reduction box; the rear-end servo motor is connected to the rear-end transmission of the mechanism body through the rear-end self-locking turbine reduction box.

6. The head tape arrangement mechanism according to claim 1, characterized in that: It also includes a front guide rail and a rear guide rail; the front guide rail and the rear guide rail are respectively installed on the front mounting seat and the rear mounting seat, and are arranged parallel and spaced along the first direction; the two ends of the mechanism body are respectively slidably installed on the front guide rail and the rear guide rail.

7. The head tape arrangement mechanism according to claim 6, characterized in that: Both ends of the front guide rail are provided with front limit blocks; both ends of the rear guide rail are provided with rear limit blocks.

8. The head tape arrangement mechanism according to claim 1, characterized in that: It also includes multiple detection members; the multiple detection members are arranged on the front end mounting seat or the rear end mounting seat at intervals along the second direction; the detection members are communicatively connected to the controller and are used to send a trigger signal to the controller when the mechanism body is detected; the controller is used to control the front end servo motor and the rear end servo motor to stop working when receiving the trigger signal.

9. A hose retracting and releasing device, characterized in that: It comprises a head tape taking-up device and a head tape handling mechanism as described in any one of claims 1 to 8; the rear end of the head tape taking-up device is installed at the front end of the mechanism body.

10. A hose fire truck, characterized in that: It comprises a vehicle body and the water hose retracting and releasing device as claimed in claim 9; the front end mounting seat and the rear end mounting seat are both mounted on the vehicle body.

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