Water hose winding and unwinding device and water hose fire fighting truck

Abstract

The utility model relates to a water hose winding and unwinding device and a water hose fire fighting truck. The water hose winding and unwinding device comprises a hose winding mechanism, a hose arranging mechanism and a belt conveying mechanism. The belt conveying mechanism comprises a belt frame, a belt driving wheel, a belt driven wheel, a conveying belt and a belt driving piece. The belt frame is detachably installed on the belt collecting mechanism. When a conveying belt and other quick-wear parts need to be replaced, a worker only needs to climb to the roof of the hose fire truck to detach the belt frame and the hose collecting mechanism, then the whole belt conveying mechanism is hoisted down through hoisting equipment, and the belt conveying mechanism is placed on the ground to replace the conveying belt and other quick-wear parts. And then the conveying belt mechanism is hoisted to the roof of the vehicle body through hoisting equipment, and a worker only needs to connect the belt frame with the belt collecting mechanism. Compared with a traditional mode that a worker needs to climb to the top of a vehicle body to disassemble, assemble and replace the conveying belt, the water hose winding and unwinding device has the advantages that the conveying belt is convenient to replace, and the replacement efficiency is high.

Description

Technical Field

[0001] The utility model relates to the technical field of water hose fire fighting vehicles, in particular to 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] In order to ensure smooth belt collection and release, a belt conveyor is usually set on the hose collection and release mechanism to assist the hose to move forward or backward on the hose collection and release mechanism. However, traditional belt conveyors are directly assembled on the hose collection and release device. Therefore, when the belt and other wearing parts need to be replaced, the staff needs to climb onto the roof of the hose truck and remove the surrounding parts before replacing the belt. Usually, it takes two people two or three days to complete the replacement of a belt. Utility Model Content

[0004] Based on this, it is necessary to provide a water hose retracting and releasing belt device and a water hose fire truck that are easy to replace the conveyor belt and have high conveyor belt replacement efficiency.

[0005] A water hose retracting and unreeling device comprises a belt retracting mechanism, a belt arranging mechanism and a belt conveying mechanism; the rear end of the belt retracting mechanism is installed on the top of the front end of the belt arranging mechanism;

[0006] The belt conveying mechanism includes a belt frame, a belt driving wheel, a belt driven wheel, a conveying belt and a belt driving member; the belt frame is detachably mounted on the belt taking-up mechanism; the belt driving wheel and the belt driven wheel are respectively and parallelly mounted on the two ends of the belt frame; the conveying belt is tensioned on the belt driving wheel and the belt driven wheel; the belt driving member is drivingly connected to the belt driving wheel.

[0007] In one embodiment, the belt frame includes two side plates and a plurality of struts; the two side plates are spaced apart in a direction perpendicular to the conveying direction of the conveyor belt; the plurality of struts are spaced apart between the two side plates along the conveying direction of the conveyor belt; the two ends of each strut are fixedly connected to the two side plates respectively; the two ends of the belt driving wheel are detachably connected to one end of the two side plates respectively; the two ends of the belt driven wheel are detachably connected to the other end of the two side plates respectively; the two side plates are detachably connected to the two sides of the belt taking-up mechanism respectively.

[0008] In one embodiment, each of the side plates is screwed to the belt taking-up mechanism via a threaded fastener so as to detachably connect the belt rack and the belt taking-up mechanism.

[0009] In one embodiment, the rim surface of the belt driving wheel is formed with two first ribs spaced apart in the circumferential direction; the conveying belt is located between the two first ribs;

[0010] The rim surface of the belt driven wheel is formed with two second ribs spaced apart in the circumferential direction; the conveying belt is located between the two second ribs.

[0011] In one of the embodiments, both ends of the belt driven pulley are detachably connected to the belt frame through a first tensioning and correcting structure; the two first tensioning and correcting structures are constructed to be able to drive one end of the belt driven pulley to move in a direction toward the belt driving pulley, and at the same time drive the other end of the belt driving pulley to move in a direction away from the belt driving pulley until the conveying belt returns to the straight position.

[0012] In one embodiment, both ends of the belt driven pulley are formed with a first threaded adjustment hole;

[0013] The first tensioning and correcting structure includes a first tensioning and adjusting seat and a first adjusting screw; the first tensioning and adjusting seat is installed on the belt frame; the first adjusting screw is passed through and threaded into the corresponding first threaded adjustment hole, and both ends are rotatably installed on the first tensioning and adjusting seat; the axial direction of the first adjusting screw is cross-set with the conveying direction of the conveying belt.

[0014] In one of the embodiments, both ends of the belt driving pulley are detachably connected to the belt frame through a second tensioning and correcting structure; the two second tensioning and correcting structures are constructed to be able to drive one end of the belt driving pulley to move in a direction toward the belt driven pulley, and at the same time drive the other end of the belt driving pulley to move in a direction away from the belt driven pulley until the conveying belt returns to the straight position.

[0015] In one embodiment, a second threaded adjustment hole is formed at both ends of the belt driving pulley;

[0016] The second tensioning and correcting structure includes a second tensioning adjustment seat and a second adjusting screw; the second tensioning adjustment seat is installed on the belt frame; the second adjusting screw is passed through and threaded into the corresponding second threaded adjustment hole, and both ends are rotatably installed on the second tensioning adjustment seat; the axial direction of the second adjusting screw is cross-set with the conveying direction of the conveying belt.

[0017] A water hose fire truck comprises a vehicle body and the water hose retracting and releasing device as described above; the belt arranging mechanism is installed on the vehicle body.

[0018] For the above-mentioned hose retractable belt device and hose fire truck, when it is necessary to replace the conveyor belt and other wearing parts, the staff only needs to climb to the roof of the hose fire truck to disassemble the belt frame and the belt retracting mechanism, and then use the lifting equipment to lift the entire belt conveyor mechanism down and put it on the ground to replace the conveyor belt and other wearing parts. After the conveyor belt and other wearing parts are replaced, the conveyor belt mechanism can be lifted to the roof of the vehicle body by the lifting equipment again, and the staff can connect the belt frame and the belt retracting mechanism. Compared with the traditional method that requires the staff to climb to the top of the vehicle body to disassemble and replace the conveyor belt, the above-mentioned hose retractable belt device has the advantages of convenient conveyor belt replacement and high replacement efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the structure of a water hose retracting and unretracting device in a preferred embodiment of the utility model;

[0020] Figure 2 for Figure 1 A schematic diagram of the structure of the belt conveyor mechanism in the water hose retracting and unreeling device shown;

[0021] Figure 3 for Figure 2 The structure diagram of the belt conveyor mechanism shown is a diagram after the conveyor belt is removed;

[0022] Figure 4 for Figure 3 A partial enlarged view of one end of a driven pulley of a belt in the belt conveying mechanism shown;

[0023] Figure 5 for Figure 3 A partial enlarged view of one end of the belt driving pulley in the belt conveying mechanism shown;

[0024] Figure 6 for Figure 4 A cross-sectional view of a partial enlarged view of one end of the driven pulley of the belt shown;

[0025] Figure 7 for Figure 5 A cross-sectional view of a partially enlarged view of one end of the belt driving pulley is shown.

[0026] Explanation of reference numerals: 100, water hose retracting and releasing device; 110, belt retracting mechanism; 120, belt conveying mechanism; 121, belt frame; 1211, side plate; 1212, support rod; 122, belt driving pulley; 1221, first rib; 1222, second threaded adjustment hole; 123, belt driven pulley; 1231, second rib; 1232, first threaded adjustment hole; 124, conveying belt; 125, belt driving member; 126, first tensioning and correcting structure; 1261, first tensioning and adjusting seat; 1262, first adjusting screw; 127, second tensioning and correcting structure; 1271, second tensioning and adjusting seat; 1272, second adjusting screw. DETAILED DESCRIPTION

[0027] 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.

[0028] 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.

[0029] 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.

[0030] 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.

[0031] 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.

[0032] The utility model provides a water hose retractable belt device and a water hose fire truck, wherein the water hose fire truck comprises a vehicle body and a water hose retractable belt device, wherein the water hose retractable belt device is installed on the top of the vehicle body.

[0033] It should be noted that the front end and the rear end are determined with reference to the front and rear of the fire truck, that is, the rear end of the belt taking-up mechanism is the end of the belt taking-up mechanism close to the rear of the vehicle, and the front end of the belt unwinding mechanism is the end of the belt unwinding mechanism close to the front of the vehicle.

[0034] 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.

[0035] Figure 1 The structure of the hose retracting and unretracting device in one embodiment of the utility model is shown. For the convenience of description, the accompanying drawings only show the structure related to the utility model.

[0036] See also Figure 1 In a preferred embodiment of the utility model, the water hose retractable belt device 100 includes a belt retracting mechanism 110, a belt arranging mechanism (not shown) and a belt conveying mechanism 120. The rear end of the belt retracting mechanism 110 is installed on the top of the front end of the belt arranging mechanism to realize the installation of the water hose retractable belt device 100 on the vehicle body.

[0037] Please also read Figure 2 and Figure 3 The belt conveying mechanism 120 includes a belt frame 121, a belt driving wheel 122, a belt driven wheel 123, a conveying belt 124 and a belt driving member 125. The belt frame 121 is detachably mounted on the belt receiving mechanism 110 to mount the belt conveying mechanism 120 on the belt receiving mechanism 110. The belt driving wheel 122 and the belt driven wheel 123 are respectively mounted in parallel at both ends of the belt frame 121. The conveying belt 124 is tensioned on the belt driving wheel 122 and the belt driven wheel 123. The belt driving member 125 is in transmission connection with the belt driving wheel 122.

[0038] Therefore, in the above-mentioned water hose take-up and release device 100, the take-up mechanism 110, the belt conveying mechanism 120 and the belt arranging mechanism are modularly designed, and are easy to assemble and disassemble.

[0039] For the above-mentioned hose retractable and retractable device 100, when it is necessary to replace the conveyor belt 124 and other wearing parts, the staff only needs to climb to the roof of the hose fire truck to disassemble the belt frame 121 and the belt collection mechanism 110, and then use the lifting equipment to lift the entire belt conveyor mechanism 120 down and put it on the ground to replace the conveyor belt 124 and other wearing parts. After the replacement of the conveyor belt 124 and other wearing parts is completed, the conveyor belt 124 mechanism can be lifted to the roof of the vehicle body by the lifting equipment again, and the staff can connect the belt frame 121 and the belt collection mechanism 110. Compared with the traditional method that requires the staff to climb to the top of the vehicle body to disassemble and replace the conveyor belt 124, the above-mentioned method of disassembling the entire belt conveyor mechanism 120 and putting it on the ground for belt replacement makes the disassembly and replacement of the conveyor belt 124 more convenient and the replacement efficiency is higher.

[0040] In some embodiments, the belt frame 121 includes two side plates 1211 and a plurality of struts 1212. The two side plates 1211 are spaced apart in a direction perpendicular to the conveying direction of the conveying belt 124. Specifically, the two side plates 1211 are parallel and spaced apart. A plurality of struts 1212 are spaced apart between the two side plates 1211 along the conveying direction of the conveying belt 124. The two ends of each strut 1212 are fixedly connected to the two side plates 1211, respectively. The two ends of the belt driving wheel 122 are detachably connected to one end of the two side plates 1211, respectively. The two ends of the belt driven wheel 123 are detachably connected to the other end of the two side plates 1211, respectively. The two side plates 1211 are detachably connected to the two sides of the belt taking-up mechanism 110, respectively.

[0041] Specifically, the plurality of support rods 1212 are arranged in parallel and at intervals along the conveying direction of the conveying belt 124. Of course, in other embodiments, the plurality of support rods 1212 may not be parallel, as long as the connection and fixation between the two side plates 1211 can be achieved.

[0042] In this way, the detachable connection between the belt conveying mechanism 120 and the belt taking-up mechanism 110 can be achieved by only detachably connecting the two side plates 1211 to the belt taking-up mechanism 110. Moreover, the belt frame 121 is provided with two side plates 1211 and a plurality of support rods 1212, which simplifies the structure of the belt frame 121 while ensuring that the belt frame 121 has a strong supporting strength and installation space for other parts in the belt conveying mechanism 120, which is conducive to the lightweight of the belt conveying mechanism 120.

[0043] Furthermore, in some embodiments, each side plate 1211 is screwed to the belt take-up mechanism 110 through a threaded fastener (not shown) to detachably connect the belt frame 121 and the belt take-up mechanism 110. That is, the side plate 1211 is detachably connected to the belt take-up mechanism 110 through a threaded fastener such as a bolt or a screw. In actual application, the staff only needs to twist the threaded fastener to realize the rapid disassembly and assembly of the belt conveying mechanism 120 on the belt take-up mechanism 110, which further improves the convenience and replacement efficiency of the conveying belt 124.

[0044] Of course, in other embodiments, the side plate 1211 and the belt taking-up mechanism 110 may be detachably connected via other connection structures, such as a snap connection.

[0045] Please also read Figure 4 and Figure 5 In some embodiments, the rim surface of the belt driving wheel 122 is formed with two first ribs 1221 spaced apart along the circumferential direction. The conveying belt 124 is located between the two first ribs 1221. The rim surface of the belt driven wheel 123 is formed with two second ribs 1231 spaced apart along the circumferential direction. The conveying belt 124 is located between the two second ribs 1231.

[0046] It should be noted that the rim surface of the belt driving wheel 122 refers to the surface on the belt driving wheel 122 used for tensioning the conveyor belt 124 and in contact with the conveyor belt 124; similarly, the rim surface of the belt driven wheel 123 refers to the surface on the belt driven wheel 123 used for tensioning the conveyor belt 124 and in contact with the conveyor belt 124.

[0047] Therefore, the first rib 1221 and the second rib 1231 are both used to limit the conveyor belt 124 to prevent the conveyor belt 124 from excessive deviation during use, thereby improving the reliability of the water hose retracting and unreeling device 100.

[0048] Please also read Figure 6 In some embodiments, both ends of the belt driven wheel 123 are detachably connected to the belt frame 121 through the first tensioning and correcting structures 126. The two first tensioning and correcting structures 126 are configured to drive one end of the belt driven wheel 123 to move in a direction toward the belt driving wheel 122, and at the same time drive the other end of the belt driving wheel 122 to move in a direction away from the belt driving wheel 122 until the conveying belt 124 returns to the normal position.

[0049] During actual use, if the conveyor belt 124 deviates, the staff only needs to use the first tensioning and correcting structure 126 to adjust one end of the belt driven pulley 123 to tilt a certain angle in the direction toward the belt driving pulley 122, so as to correct the deviation of the end of the conveyor belt 124 close to the belt driven pulley 123 by adjusting the tension on both sides of the conveyor belt 124, thereby improving the reliability of the belt conveying mechanism 120 and helping to extend the service life of the conveyor belt 124.

[0050] Further, in some embodiments, first threaded adjustment holes 1232 are formed at both ends of the belt driven wheel 123. The first tensioning and deviation-correcting structure 126 includes a first tensioning and adjustment seat 1261 and a first adjustment screw 1262. The first tensioning and adjustment seat 1261 is installed on the belt frame 121. The first adjustment screw 1262 is inserted into and screwed into the corresponding first threaded adjustment hole 1232, and both ends are rotatably installed on the first tensioning and adjustment seat 1261. The axial direction of the first adjustment screw 1262 is arranged to cross the conveying direction of the conveying belt 124.

[0051] When the conveyor belt 124 deviates and needs to be corrected, the staff will turn the two first adjusting screws 1262 forward and reverse respectively to drive one end of the belt driven pulley 123 to move in the direction toward the belt driving pulley 122 and the other end to move in the direction away from the belt driving pulley 122 until the belt driven pulley 123 tilts to a preset angle, thereby correcting the deviation of the conveyor belt 124 wheel close to the belt driven pulley 123, and the operation is convenient and quick.

[0052] In some embodiments, both ends of the belt driving wheel 122 are detachably connected to the belt frame 121 through the second tensioning and correcting structures 127. The two second tensioning and correcting structures 127 are configured to drive one end of the belt driving wheel 122 to move in a direction toward the belt driven wheel 123 and the other end of the wheel to move in a direction away from the belt driven wheel 123 until the conveying belt 124 returns to the normal position.

[0053] During actual use, if the conveyor belt 124 deviates, the staff only needs to use the second tensioning and correcting structure 127 to adjust one end of the belt driving wheel 122 to tilt a certain angle in the direction of the belt driven wheel 123, so as to correct the deviation of the end of the conveyor belt 124 close to the belt driving wheel 122 by adjusting the tensioning degree on both sides of the conveyor belt 124, thereby improving the reliability of the belt conveying mechanism 120 and helping to extend the service life of the conveyor belt 124.

[0054] Please also read Figure 7Further, in some embodiments, both ends of the belt driving wheel 122 are formed with second threaded adjustment holes 1222. The second tensioning and deviation-correcting structure 127 includes a second tensioning and adjustment seat 1271 and a second adjustment screw 1272. The second tensioning and adjustment seat 1271 is installed on the belt frame 121. The second adjustment screw 1272 is inserted into and screwed into the corresponding second threaded adjustment hole 1222, and both ends are rotatably installed on the second tensioning and adjustment seat 1271. The axial direction of the second adjustment screw 1272 is arranged to cross the conveying direction of the conveying belt 124.

[0055] When the conveyor belt 124 deviates and needs to be corrected, the staff will turn the two second adjusting screws 1272 forward and reverse respectively to drive one end of the belt driving wheel 122 to move in the direction toward the belt driven wheel 123 and the other end to move in the direction away from the belt driven wheel 123 until the belt driving wheel 122 tilts to a preset angle, thereby correcting the deviation of the conveyor belt 124 wheel close to the belt driving wheel 122. The operation is convenient and quick.

[0056] Of course, in other embodiments, the first tensioning and correcting structure 126 and the second tensioning and correcting structure 127 may also be structures including telescopic driving parts such as telescopic cylinders. When in use, the telescopic driving parts are used to drive one end of the belt driving wheel 122 or the belt driven wheel 123 to move forward or backward. They may also be other structures that can drive one end of the belt driving wheel 122 or one end of the belt driven wheel 123 to move forward or backward.

[0057] 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.

[0058] The above embodiments only express several implementation methods of the utility model, and the descriptions 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 utility model, 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 hose retracting and unreeling device, characterized in that: It includes a belt taking-up mechanism, a belt arranging mechanism and a belt conveying mechanism; the rear end of the belt taking-up mechanism is installed on the top of the front end of the belt arranging mechanism; The belt conveying mechanism includes a belt frame, a belt driving wheel, a belt driven wheel, a conveying belt and a belt driving member; the belt frame is detachably mounted on the belt taking-up mechanism; the belt driving wheel and the belt driven wheel are respectively and parallelly mounted on the two ends of the belt frame; the conveying belt is tensioned on the belt driving wheel and the belt driven wheel; the belt driving member is drivingly connected to the belt driving wheel.

2. The hose retracting and releasing device according to claim 1, characterized in that: The belt rack includes two side plates and a plurality of struts; the two side plates are spaced apart in a direction perpendicular to the conveying direction of the conveying belt; the plurality of struts are spaced apart between the two side plates along the conveying direction of the conveying belt; the two ends of each strut are fixedly connected to the two side plates respectively; the two ends of the belt driving wheel are detachably connected to one end of the two side plates respectively; the two ends of the belt driven wheel are detachably connected to the other end of the two side plates respectively; the two side plates are detachably connected to the two sides of the belt taking-up mechanism respectively.

3. The water hose retracting and releasing device according to claim 2, characterized in that: Each of the side plates is screwed to the belt taking-up mechanism via a threaded fastener so as to detachably connect the belt rack and the belt taking-up mechanism.

4. The hose retracting and releasing device according to claim 1, characterized in that: The rim surface of the belt driving wheel is formed with two first ribs spaced apart in the circumferential direction; the conveying belt is located between the two first ribs; The rim surface of the belt driven wheel is formed with two second ribs spaced apart in the circumferential direction; the conveying belt is located between the two second ribs.

5. The hose retracting and releasing device according to claim 1, characterized in that: Both ends of the belt driven pulley are detachably connected to the belt frame through a first tensioning and correcting structure; the two first tensioning and correcting structures are constructed to be able to drive one end of the belt driven pulley to move in a direction toward the belt driving pulley, and at the same time drive the other end of the belt driving pulley to move in a direction away from the belt driving pulley until the conveying belt returns to the straight position.

6. The water hose retracting and releasing device according to claim 5, characterized in that: Both ends of the belt driven pulley are formed with first threaded adjustment holes; The first tensioning and correcting structure includes a first tensioning and adjusting seat and a first adjusting screw; the first tensioning and adjusting seat is installed on the belt frame; the first adjusting screw is passed through and threaded into the corresponding first threaded adjustment hole, and both ends are rotatably installed on the first tensioning and adjusting seat; the axial direction of the first adjusting screw is cross-set with the conveying direction of the conveying belt.

7. The hose retracting and releasing device according to claim 1, characterized in that: Both ends of the belt driving wheel are detachably connected to the belt frame through a second tensioning and correcting structure; the two second tensioning and correcting structures are constructed to be able to drive one end of the belt driving wheel to move in a direction toward the belt driven wheel, and at the same time drive the other end of the belt driving wheel to move in a direction away from the belt driven wheel until the conveying belt returns to the straight position.

8. The hose retracting and releasing device according to claim 7, characterized in that: Second threaded adjustment holes are formed at both ends of the belt driving pulley; The second tensioning and correcting structure includes a second tensioning adjustment seat and a second adjusting screw; the second tensioning adjustment seat is installed on the belt frame; the second adjusting screw is passed through and threaded into the corresponding second threaded adjustment hole, and both ends are rotatably installed on the second tensioning adjustment seat; the axial direction of the second adjusting screw is cross-set with the conveying direction of the conveying belt.

9. A hose fire truck, characterized in that: It comprises a vehicle body and a water hose retracting and releasing device as described in any one of claims 1 to 8; the belt arranging mechanism is installed on the vehicle body.

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