Turnover type guide wheel structure, water hose take-up and pay-off device and water hose fire fighting truck

Abstract

The utility model relates to a turnover guide wheel structure, a water hose take-up and pay-off device and a water hose fire fighting truck. The turnover type guide wheel structure comprises a mounting base, a supporting piece, a water hose guide wheel and a turnover driving piece. The turnover driving part is used for driving the supporting part to rotate in the direction facing or deviating from the mounting base so that the working state of the turnover type guide wheel structure can be switched to the retracting state that the water hose guide wheel retracts to the position below the mounting base or the hose guiding state that the supporting part inclines downwards relative to the mounting base in the direction from the second end to the first end. In the belt guiding state, the included angle between the supporting piece and the installation base is adjustable. The included angle between the supporting piece and the mounting base is adjusted through the turnover driving piece, so that the guide belt inclination angle of the turnover type guide wheel structure reaches the optimal angle, it is guaranteed that a water hose can move more smoothly in the hose collecting process, the probability of abrasion to the water hose and a water hose guide wheel in the hose collecting process is reduced, the reliability of hose collecting work is improved, and the maintenance cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of hose fire trucks, in particular to a folding guide wheel structure, a hose retracting and releasing device and a hose fire truck. 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] A guide wheel structure is provided at the front end of the tape laying and taking-up mechanism, and the guide wheel structure can facilitate the smooth transition of the water hose from the ground to the transverse surface of the tape laying and taking-up mechanism, ensuring that the water hose can move smoothly during the taking-up process. However, based on factors such as the weight of the water hose and the terrain on which the water hose fire truck travels, the inclination angle of the inclined section of the water hose between the ground and the tape laying and taking-up mechanism will also be different, and the guide wheel structure in the traditional water hose fire truck is fixed at the front end of the tape laying and taking-up mechanism, so the inclination angle of the guide wheel structure is unchanged, so it is easy for the inclination angle of the inclined section of the water hose to not match the inclination angle of the guide wheel structure. At this time, it is very likely that the guide wheel structure will not be able to guide the inclined section of the water hose, or the friction between the water hose and the guide wheel structure will be too large, resulting in the unsmooth taking-up work, the water hose is easy to wear, and the guide wheel structure is easy to wear. Therefore, the reliability of the traditional guide wheel structure is low and the maintenance cost is high. Utility Model Content

[0004] Based on this, it is necessary to provide a folding guide wheel structure, a hose retracting and releasing device, and a hose fire truck that can improve the reliability of the hose retracting work and reduce the maintenance cost.

[0005] A foldable guide wheel structure, comprising:

[0006] A mounting base having a first end and a second end opposite to each other;

[0007] A support member, one end of which is rotatably mounted on the first end; a first mounting space is formed at an end of the support member away from one end of the mounting seat;

[0008] A water hose guide wheel is accommodated in the first installation space; both ends of the water hose guide wheel are rotatably connected to the support member;

[0009] A folding driving member, which is in transmission connection with the supporting member and is used to drive the supporting member to rotate in a direction toward or away from the mounting seat, so as to switch the working state of the folding guide wheel structure to a stowed state in which the water hose guide wheel is retracted below the mounting seat or a belt guiding state in which the supporting member is tilted downward relative to the mounting seat in a direction in which the second end points to the first end;

[0010] Wherein, when in the guide belt state, the angle between the support member and the mounting seat is adjustable.

[0011] In one of the embodiments, the folding driving member is a hydraulic cylinder; two ends of the hydraulic cylinder are rotatably connected to the bottom of the mounting seat and the bottom of the supporting member respectively.

[0012] In one of the embodiments, the surface of the water hose guide wheel is formed with anti-slip grooves arranged at intervals along the circumferential direction.

[0013] In one of the embodiments, a spray mechanism is further provided in the first installation space; the spray mechanism is located below the water hose guide wheel and is used to spray water to the inclined section of the water hose.

[0014] In one embodiment, it further includes a roller and two rolling mechanisms; a second installation space is formed at the end of the first end; two ends of the roller are rotatably connected to two opposite inner walls of the second installation space respectively, and are arranged parallel to the water hose guide wheel;

[0015] The rolling mechanism includes a mounting frame and a rolling wheel; the two mounting frames are respectively arranged on the left and right sides of the first end, and are spaced and arranged opposite to each other in a direction perpendicular to the direction in which the second end points to the first end; each rolling wheel is rotatably mounted on the corresponding mounting frame and is located directly above the roller; each rolling wheel is spaced apart from the roller.

[0016] In one embodiment, the mounting frame includes a mounting member and an adjusting member; the mounting member is mounted on the mounting seat; one end of the adjusting member is rotatably connected to the mounting seat, and the other end extends to the top of the roller; the roller is rotatably mounted on the corresponding adjusting member;

[0017] The rolling mechanism also includes an adjusting drive member, which is in transmission connection with the adjusting member and is used to drive the adjusting member to drive the rolling wheel to move toward or away from the roller so as to adjust the gap between the rolling wheel and the roller.

[0018] In one of the embodiments, a plurality of first anti-skid grooves are formed at intervals along the circumferential direction on the surface of the roller wheel; and a plurality of second anti-skid grooves are formed at intervals along the circumferential direction on the surface of the rolling wheel.

[0019] A water hose retracting and unreeling device, characterized in that it comprises a belt taking-up mechanism, a belt sorting mechanism and the folding guide wheel structure as described above; the rear end of the belt taking-up mechanism is installed on the top of the front end of the belt sorting mechanism; the second end is installed on the front end of the belt taking-up mechanism or is integrally formed with the front end of the belt taking-up mechanism.

[0020] A water hose fire truck is characterized by comprising a vehicle body and the water hose retracting and releasing device as described above; the belt arranging mechanism is installed on the vehicle body.

[0021] The above-mentioned folding guide wheel structure, hose retracting and releasing device, and hose fire truck, when the hose fire truck needs to perform the hose retracting work or the hose laying work, the folding drive member is used to switch the working state of the folding guide wheel structure to the hose guiding state to ensure the working range; when the hose fire truck does not need to perform the hose retracting work and the hose laying work, the folding drive member is used to switch the working state of the folding guide wheel structure to the retracting state to ensure that the entire vehicle length of the hose fire truck meets the vehicle length standard. Moreover, the angle between the support member and the mounting seat can also be adjusted by the folding drive member to adjust the guide belt inclination angle of the folding guide wheel structure to the optimal angle to adapt to the weight of the hose, the terrain at the time, etc., to ensure that the hose can move more smoothly during the hose retracting process, reduce the probability of wear on the hose and the hose guide wheel during the hose retracting process, improve the reliability of the hose retracting work, and reduce the maintenance cost of the folding guide wheel structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a structural schematic diagram of the foldable guide wheel structure in a preferred embodiment of the utility model;

[0023] Figure 2 for Figure 1 A front view of the foldable guide wheel structure in the guide belt state;

[0024] Figure 3 for Figure 1 A front view of the foldable guide wheel structure shown in the retracted state.

[0025] Explanation of reference numerals: 100, foldable guide wheel structure; 110, mounting seat; 111, first end; 112, second end; 113, second mounting space; 120, supporting member; 121, first mounting space; 130, hose guide wheel; 140, folding driving member; 150, spraying mechanism; 160, roller; 170, rolling mechanism; 171, mounting frame; 1711, mounting member; 1712, adjusting member; 172, rolling wheel; 173, adjusting driving member. DETAILED DESCRIPTION

[0026] 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.

[0027] 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.

[0028] 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.

[0029] 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.

[0030] 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.

[0031] The utility model provides a folding guide wheel structure, a water hose retracting and releasing device and a water hose fire fighting truck.

[0032] The water hose retracting and unreeling device includes a retracting mechanism, a belt arranging mechanism and a folding guide wheel structure. The rear end of the retracting mechanism is installed on the top of the front end of the belt arranging mechanism, and the folding guide wheel structure is installed on the front end of the retracting mechanism or is integrally formed with the front end of the retracting mechanism.

[0033] Among them, the water hose fire truck includes a vehicle body and a water hose retractable belt device, and a belt management mechanism is installed on the vehicle body to realize the installation of the belt retractable belt device on the vehicle body.

[0034] 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.

[0035] 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.

[0036] Figure 1 The structure of the foldable guide wheel structure 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.

[0037] See also Figure 1 In a preferred embodiment of the present invention, the foldable guide wheel structure 100 includes a mounting seat 110, a support member 120, a water hose guide wheel 130 and a foldable driving member 140.

[0038] The mounting seat 110 has a first end 111 and a second end 112 opposite to each other. In a hose fire truck, the first end 111 and the second end 112 are the front end and the rear end of the mounting seat 110, respectively. In a hose retractable and retractable device, the second end 112 is mounted on the front end of a retractable mechanism or is formed integrally with the front end of the retractable mechanism, so that the folding guide wheel structure 100 is mounted on the retractable mechanism or is formed integrally with the retractable mechanism. When the second end 112 is formed integrally with the front end of the retractable mechanism, the mounting seat 110 can be used as a part of the retractable mechanism.

[0039] One end of the support member 120 is rotatably mounted on the first end 111. A first mounting space 121 is formed at an end of the support member 120 away from one end of the mounting seat 110.

[0040] The hose guide wheel 130 is accommodated in the first installation space 121. Both ends of the hose guide wheel 130 are rotatably connected to the support member 120. That is, the hose guide wheel 130 is located in the first installation space 121, and both ends are rotatably connected to two opposite side walls of the first installation space 121. The central axis of the hose guide wheel 130 is perpendicular to the direction from the first end 111 to the second end 112.

[0041] Please also read Figure 2 and Figure 3 The folding drive member 140 is transmission-connected to the support member 120 and is used to drive the support member 120 to rotate in a direction toward or away from the mounting seat 110, so as to switch the working state of the folding guide wheel structure 100 to a retracted state in which the water hose guide wheel 130 is retracted to below the mounting seat 110 or to a guide belt state in which the support member 120 is tilted downward in a direction from the second end 112 to the first end 111 relative to the mounting seat 110.

[0042] When the folding driving member 140 is in the belt-guiding state, the angle between the support member 120 and the mounting seat 110 is adjustable. That is, by changing the stroke of the folding driving member 140, the angle between the support member 120 and the mounting seat 110 can be adjusted in the belt-guiding state.

[0043] When the hose fire truck needs to collect the belt or lay the belt, the folding drive member 140 is used to switch the working state of the folding guide wheel structure 100 to the belt guiding state. At this time, the support member 120 drives the hose guide wheel 130 to extend forward, forming a forward and downward inclination angle relative to the mounting seat 110 to ensure the working range; when the hose fire truck does not need to collect the belt or lay the belt, the folding drive member 140 is used to switch the working state of the folding guide wheel structure 100 to the retracted state. At this time, at least part of the support member 120 and the entire hose guide wheel 130 can be retracted directly under the belt collection mechanism to ensure that the overall length of the hose fire truck meets the vehicle length standard.

[0044] Moreover, the angle between the support member 120 and the mounting seat 110 can be adjusted through the folding drive member 140 to adjust the inclination angle of the folding guide wheel structure 100 to an optimal angle to adapt to the weight of the water hose, the terrain at the time, etc., to ensure that the water hose can move more smoothly during the belt collection process, reduce the probability of wear on the water hose and the water hose guide wheel 130 during the belt collection process, improve the reliability of the belt collection work, and reduce the maintenance cost of the folding guide wheel structure 100.

[0045] In some embodiments, the folding drive member 140 is a hydraulic cylinder. The two ends of the hydraulic cylinder are rotatably connected to the bottom of the mounting seat 110 and the bottom of the support member 120 respectively. In actual use, by controlling the stroke of the hydraulic cylinder, the tilt angle of the folding guide wheel structure 100 in the guide belt state can be adjusted. The reflective drive member is set as a hydraulic cylinder, which makes the operation of the folding guide wheel structure 100 more reliable and stable, and the structure is simpler.

[0046] In some embodiments, the surface of the water hose guide wheel 130 is formed with anti-skid grooves (not marked in the figure) arranged at intervals along the circumferential direction. Specifically, the extension direction of the anti-skid grooves is consistent with the axial direction of the water hose guide wheel 130. Of course, in other embodiments, the extension direction of the anti-skid grooves can also be arranged obliquely relative to the central axis of the water hose guide wheel 130. The provision of the anti-skid grooves can prevent the water hose from slipping relative to the water hose guide wheel 130 during the belt collection process, further improving the stability and reliability of the belt collection operation.

[0047] In some embodiments, a spray mechanism 150 is further provided in the first installation space 121. The spray mechanism 150 is located below the water hose guide wheel 130 and is used to spray water to the inclined section of the water hose.

[0048] During actual use, the water hose will inevitably be contaminated with some dust, dirt, burning materials and other impurities on the ground, and the spray mechanism 150 sprays water on the inclined section of the water hose to wash away these impurities attached to the water hose before the water hose is stored in the belt storage compartment, thereby ensuring that the water hose stored in the belt storage compartment is clean and tidy, so as to facilitate the next use of the water hose.

[0049] In some embodiments, the foldable guide wheel structure 100 further includes a roller 160 and two rolling mechanisms 170. A second installation space 113 is formed at the end of the first end 111. Both ends of the roller 160 are rotatably connected to two opposite inner walls of the second installation space 113, and are arranged parallel to the hose guide wheel 130.

[0050] The rolling mechanism 170 includes a mounting frame 171 and a rolling wheel 172. The two mounting frames 171 are respectively disposed on the left and right sides of the first end 111, and are spaced and arranged opposite to each other in a direction perpendicular to the direction in which the second end 112 points to the first end 111. Each rolling wheel 172 is rotatably mounted on the corresponding mounting frame 171 and is located directly above the roller 160. Each rolling wheel 172 is spaced apart from the roller 160.

[0051] During the tape laying process, the water hose on the tape take-up mechanism passes through the gap between the roller 172 and the roller 160 and enters the inclined section; during the tape take-up process, the inclined section of the water hose passes through the water hose guide wheel 130 and enters the gap between the roller 172 and the roller 160, and then enters the tape take-up mechanism to achieve the subsequent tape take-up and tape management work. Therefore, the roller 172 and the roller 160 cooperate with each other to achieve a smooth transition between the inclined section of the water hose and the horizontal section on the tape take-up mechanism.

[0052] When it is necessary to lay or collect the belt, the inclined section of the water hose will pass through the water hose guide wheel 130 and enter the gap between the roller wheel 172 and the roller 160. At this time, the rotation direction of the water hose guide wheel 130, the roller wheel 172 and the roller 160 is related to the moving direction of the water hose. The rotation direction of the water hose guide wheel 130 and the roller 160 is the same, while the rotation direction of the roller wheel 172 is opposite to the rotation direction of the roller 160, so as to ensure that the water hose can move smoothly.

[0053] Further, in some embodiments, the mounting frame 171 includes a mounting member 1711 and an adjusting member 1712. The mounting member 1711 is mounted on the mounting seat 110. One end of the adjusting member 1712 is rotatably connected to the mounting seat 110, and the other end extends to the top of the roller 160. The roller 172 is rotatably mounted on the corresponding adjusting member 1712.

[0054] The rolling mechanism 170 further includes an adjusting driving member 173 . The adjusting driving member 173 is in transmission connection with the adjusting member 1712 and is used to drive the adjusting member 1712 to drive the rolling wheel 172 to move toward or away from the roller 160 , so as to adjust the gap between the rolling wheel 172 and the roller 160 .

[0055] In this way, during actual use, the adjusting member 173 can be used to drive the adjusting member 1712 to drive the roller 172 away from or close to the roller 160, so as to adjust the size of the gap between the roller 172 and the roller 160, thereby ensuring that the roller 172 and the roller 160 effectively push the water hose, and further improving the reliability of the belt collection and laying operations.

[0056] Further, in some embodiments, a plurality of first anti-skid grooves (not marked in the figure) are formed at intervals along the circumference on the surface of the roller 160. A plurality of second anti-skid grooves (not marked in the figure) are formed at intervals along the circumference on the surface of the roller 172. Specifically, the extending direction of the first anti-skid groove is consistent with the axial direction of the roller 160, and the extending direction of the second anti-skid groove is consistent with the axial direction of the roller 172. Of course, in other embodiments, the extending direction of the first anti-skid groove can be set obliquely relative to the central axis of the roller 160, and the extending direction of the second anti-skid groove can also be set obliquely relative to the central axis of the roller 172.

[0057] The provision of the first anti-skid groove and the second anti-skid groove can reduce the probability of the water hose slipping between the roller wheel 172 and the roller wheel 160, and further improve the reliability of the belt taking-up and belt laying operations.

[0058] 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.

[0059] 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 foldable guide wheel structure, characterized in that: include: A mounting base having a first end and a second end opposite to each other; A support member, one end of which is rotatably mounted on the first end; a first mounting space is formed at an end of the support member away from one end of the mounting seat; A water hose guide wheel is accommodated in the first installation space; both ends of the water hose guide wheel are rotatably connected to the support member; a folding drive member, drivingly connected to the support member and used to drive the support member to rotate in a direction toward or away from the mounting seat, so as to switch the working state of the folding guide wheel structure to a stowed state in which the hose guide wheel is retracted below the mounting seat or to a guide state in which the support member is tilted downward relative to the mounting seat in a direction from the second end to the first end; Wherein, when in the guide belt state, the angle between the support member and the mounting seat is adjustable.

2. The foldable guide wheel structure according to claim 1, characterized in that: The folding driving component is a hydraulic cylinder; both ends of the hydraulic cylinder are rotatably connected to the bottom of the mounting seat and the bottom of the supporting component respectively.

3. The foldable guide wheel structure according to claim 1, characterized in that: The surface of the water hose guide wheel is formed with anti-skid grooves arranged at intervals along the circumferential direction.

4. The foldable guide wheel structure according to claim 1, characterized in that: A spray mechanism is also provided in the first installation space; the spray mechanism is located below the water hose guide wheel and is used to spray water toward the inclined section of the water hose.

5. The foldable guide wheel structure according to claim 1, characterized in that: It also includes a roller and two rolling mechanisms; a second installation space is formed at the end of the first end; both ends of the roller are rotatably connected to two opposite inner walls of the second installation space, and are arranged parallel to the water hose guide wheel; The rolling mechanism includes a mounting frame and a rolling wheel; the two mounting frames are respectively arranged on the left and right sides of the first end, and are spaced and opposite to each other in a direction perpendicular to the direction in which the second end points to the first end; each rolling wheel is rotatably mounted on the corresponding mounting frame and is located directly above the roller; each rolling wheel is spaced apart from the roller.

6. The foldable guide wheel structure according to claim 5, characterized in that: The mounting frame includes a mounting member and an adjusting member; the mounting member is mounted on the mounting seat; one end of the adjusting member is rotatably connected to the mounting seat, and the other end extends to directly above the roller; the roller is rotatably mounted on the corresponding adjusting member; The rolling mechanism also includes an adjusting drive member; the adjusting drive member is in transmission connection with the adjusting member and is used to drive the adjusting member to drive the rolling wheel to move toward or away from the roller to adjust the size of the gap between the rolling wheel and the roller.

7. The foldable guide wheel structure according to claim 5, characterized in that: A plurality of first anti-skid grooves are formed at intervals along the circumferential direction on the surface of the roller; and a plurality of second anti-skid grooves are formed at intervals along the circumferential direction on the surface of the rolling wheel.

8. A hose retracting and unretracting device, characterized in that: It includes a belt taking-up mechanism, a belt sorting mechanism and a folding guide wheel structure as described in any one of claims 1 to 7; the rear end of the belt taking-up mechanism is installed on the top of the front end of the belt sorting mechanism; the second end is installed on the front end of the belt taking-up mechanism or is integrally formed with the front end of the belt taking-up mechanism.

9. A hose fire truck, characterized in that: It comprises a vehicle body and the water hose retracting and unreeling device as claimed in claim 8; the belt arranging mechanism is installed on the vehicle body.

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