Water squeezing device and hose laying vehicle

Abstract

The present invention discloses a water squeezing device and a hose laying vehicle, which are used to perform a water squeezing operation on a fire hose. Specifically, it includes a fixedly arranged first water squeezing wheel and a second water squeezing wheel that can move relative to the first water squeezing wheel. When the hose body passes through, a water squeezing channel is formed by the gap between the first water squeezing wheel and the second water squeezing wheel. When the hose joint passes through, the second water squeezing wheel moves relative to the first water squeezing wheel, so that the gap between the first water squeezing wheel and the second water squeezing wheel becomes wider to allow the hose joint to pass through. When storing the fire hose, it can not only fully squeeze out the remaining water in the fire hose but also ensure that the hose joint passes through quickly and smoothly, improving the efficiency of hose storage.

Description

Technical Field

[0001] The present invention relates to the field of fire fighting equipment, and particularly to a water squeezing device and a hose laying vehicle. Background Art

[0002] Fire hose laying is a very important part of fire fighting operations. Especially in environments such as the wild or old residential areas where there are insufficient fire hydrants and large fire trucks are difficult to drive in, it is often necessary to lay fire hoses over a long distance to draw water from a distant water source for fire fighting operations.

[0003] Currently, fire hose laying mainly relies on manual labor. Fire fighters not only need to carry heavy fire hoses on their backs, but sometimes also need to connect hose joints on-site. After the fire fighting operation is completed, it is necessary to manually squeeze out the remaining water in the hose and coil and store the hose. This not only increases the workload of fire fighters, but also may delay the precious time of fire fighting operations.

[0004] After using a hose laying vehicle to complete hose laying, it is necessary to squeeze out the remaining water in the hose to complete hose storage. However, due to the special structure of fire hoses, each section of the hose is connected through a hose joint. It is very difficult for the existing water squeezing devices of hose laying vehicles to both fully squeeze out the remaining water in the fire hose and ensure the quick and smooth passage of the hose joint. Summary of the Invention

[0005] The purpose of the present invention is to provide a water squeezing device and a hose laying vehicle for performing a water squeezing operation on a fire hose, which can both fully squeeze out the remaining water in the fire hose and ensure the quick and smooth passage of the hose joint when storing the fire hose, thereby improving the efficiency of hose storage. The specific technical solutions are as follows:

[0006] In one aspect of the present invention, a water squeezing device for performing a water squeezing operation on a fire hose is provided, which includes a fixedly arranged first water squeezing wheel and a second water squeezing wheel that can move relative to the first water squeezing wheel. When the hose body passes through, a water squeezing channel is formed by the gap between the first water squeezing wheel and the second water squeezing wheel. When the hose joint passes through, the second water squeezing wheel moves relative to the first water squeezing wheel, so that the gap between the first water squeezing wheel and the second water squeezing wheel becomes wider to allow the hose joint to pass through.

[0007] Furthermore, it includes side plates of the water squeezing device. The first water squeezing wheel is fixedly installed on the side plates of the water squeezing device. A water squeezing arm is movably connected to the side plates of the water squeezing device through a first rotating shaft. The second water squeezing wheel is arranged on the water squeezing arm. When the water squeezing arm rotates, it drives the second water squeezing wheel to move relative to the first water squeezing wheel.

[0008] Furthermore, it includes a locking unit and a switch unit. The locking unit is used to lock the position of the second water squeezing wheel when the hose body passes through. The switch unit can control the locking unit to unlock the locking unit when the hose joint passes through.

[0009] Further, the locking unit includes a locking hook and a locking post. The locking hook is connected to the side plate of the water squeezing device through a second rotating shaft. The locking post is arranged on the water squeezing arm. The hook-shaped structure at one end of the locking hook cooperates with the locking post to lock the position of the second water squeezing wheel.

[0010] Further, the switch unit includes a water hose connector baffle arranged on the second rotating shaft. The water hose connector baffle is arranged at the proximal end of the water hose inlet relative to the locking hook. When the water hose connector passes through, it drives the water hose connector baffle to rotate forward, causing the locking hook to rotate around the second rotating shaft so that the hook-shaped structure at one end of the locking hook disengages from the locking post.

[0011] Further, a return baffle is arranged on the side plate of the water squeezing device. The return baffle is arranged at the proximal end of the water hose inlet relative to the water hose connector baffle to define the falling-back position of the locking hook and the water hose connector baffle.

[0012] Further, the locking unit includes electromagnets respectively arranged on the water squeezing arm and the side plate of the water squeezing device. The switch unit is an induction switch arranged at the proximal end of the water hose inlet relative to the second water squeezing wheel. The induction switch is triggered when the water hose connector passes through, causing the electromagnets to lose power.

[0013] Further, an elastic connecting rod is connected between the water squeezing arm and the side plate of the water squeezing device. The elastic connecting rod is arranged at the distal end of the water hose inlet relative to the second water squeezing wheel. When the water hose body passes through, the elastic force of the elastic connecting rod squeezes the water squeezing arm to lock the position of the second water squeezing wheel. When the water hose connector passes through, the elastic connecting rod is squeezed by the water hose connector to move the second water squeezing wheel relative to the first water squeezing wheel.

[0014] Further, a trailing wheel and a front guiding wheel are arranged at the front ends of the first water squeezing wheel and the second water squeezing wheel. The trailing wheel drags the water hose to the gap inlet between the first water squeezing wheel and the second water squeezing wheel. The front guiding wheel is a roller structure arranged horizontally and / or vertically to limit the water hose inlet within the middle channel of the front guiding wheel.

[0015] On the other hand, the present invention provides a water hose laying vehicle, including the water squeezing device described in the foregoing items.

[0016] The water squeezing device and the water hose laying vehicle provided by the present invention are used to perform a water squeezing operation on a fire hose. Specifically, it includes a fixedly arranged first water squeezing wheel and a second water squeezing wheel that can move relative to the first water squeezing wheel. When the water hose body passes through, a water squeezing channel is formed by the gap between the first water squeezing wheel and the second water squeezing wheel. When the water hose connector passes through, the second water squeezing wheel moves relative to the first water squeezing wheel, making the gap between the first water squeezing wheel and the second water squeezing wheel wider to allow the water hose connector to pass through. When storing the fire hose, it can not only fully squeeze out the remaining water in the fire hose but also ensure that the water hose connector passes through quickly and smoothly, improving the efficiency of water hose storage. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is the first perspective view of the hose laying vehicle in the present invention.

[0018] Figure 2 This is the second perspective view of the hose laying vehicle in the present invention.

[0019] Figure 3 This is the perspective view of the main hose laying operation equipment on the hose laying vehicle in the present invention.

[0020] Figure 4 This is the perspective view of the guiding device in the present invention.

[0021] Figure 5 This is the perspective view of the water squeezing device in the present invention.

[0022] Figure 6 This is the exploded view of a part of the water squeezing device in the present invention.

[0023] Figure 7 This is the side view of the water squeezing device according to another embodiment of the present invention.

[0024] Figure 8 This is the side view of the water squeezing device according to another embodiment of the present invention. Detailed Embodiments

[0025] The following will further describe in detail the specific embodiments of the present invention in conjunction with the accompanying drawings and embodiments. The following embodiments are used to illustrate the present invention, but are not used to limit the scope of the present invention.

[0026] As Figure 1 、 Figure 2 、 Figure 3 shown, the hose laying vehicle provided by the embodiment of the present invention includes a vehicle body 4. A guiding device 2 is provided on the carriage of the vehicle body 4. A water squeezing device 1 is provided at the front end of the guiding device 2, and a hose storage device 3 is provided at the rear end of the guiding device 2. The water squeezing device 1 can squeeze out the water in the hose 5. The guiding device 2 can drive the hose 5 to move along the axial direction of the hose storage device 3 and guide the hose 5 to the hose storage device 3 to achieve the storage of the hose 5.

[0027] The vehicle type and size of the vehicle body 4 in the embodiment of the present invention can be selected according to actual needs. For example, for old and complex residential areas with complicated road conditions, the vehicle body 4 can be a small vehicle, which is convenient for the vehicle to shuttle and quickly lay the hose 5. For scenarios where the hose 5 needs to be laid over a long distance, the vehicle body 4 can be selected as a medium or large vehicle, and the corresponding hose storage device 3 can be provided in multiple numbers to facilitate the long-distance laying of the hose 4. The hose laying vehicle provided by the embodiment of the present invention is especially suitable for small vehicles and has the characteristics of miniaturization and flexible movement compared with the existing large hose laying vehicles.

[0028] Further, the hose storage device 3 includes a reel bracket 32 fixedly connected to the carriage and a reel 31 rotatably connected to the reel bracket 32. The reel 31 is driven to rotate by a reel driving device 33 to drive the winding and unwinding of the hose 5 on the reel 31. Baffles are provided on both sides of the reel 31 to define the axial position of the hose 5 on the reel 31. The reel driving device 33 in the embodiment of the present invention can be in the form of a combination of a driving motor and a belt, a combination of a driving motor and a gear, or drive the rotation of the reel 31 through a transmission device by means of the power when the vehicle is running and other driving forms. Specifically, it can be selected according to the requirements of the spatial structure, and the present invention does not make specific limitations in comparison.

[0029] When laying the hose 5, connect the hose 5 on the carriage to a fire truck or a fire hydrant. While the vehicle body 4 moves forward, the reel 31 is driven to rotate by the reel driving device 33 to unwind the hose 5. When the length of the hose 5 released reaches the requirement, open the joint of the hose 5. It should be noted that the fire hose 5 is usually a section of hose with a fixed length, including a hose body and hose joints at both ends of the hose body. Sections of hoses are connected through the hose joints to form a fire hose 5 with the required length. In the embodiment of the present invention, sections of hoses are pre-connected and stored on the reel 31, and when performing fire fighting operations, the connected hose 5 can be directly pulled out and connected, saving precious time for fire fighting operations. It should be noted that the hose 5 in the figure only shows the hose threading path when the hose 5 is stored, and does not represent the actual hose structure. In a specific embodiment of the present invention, a small hose laying vehicle can load a 1500m long hose 5. A 1500-meter long hose often needs to be carried by 20 - 30 fire fighters. Therefore, the hose laying vehicle provided by the embodiment of the present invention greatly reduces the working intensity of fire fighters.

[0030] Further, the guiding device 2 includes a guiding bracket 21 provided on the carriage. One or more guiding wheels 22 are provided on the guiding bracket 21. A hose channel is formed between the guiding wheel 22 and the guiding bracket 21 to define the movement direction of the hose 5 through the hose channel.

[0031] Further, the guiding bracket 21 is provided at the top or side of the vehicle body 4. One end of the guiding bracket 21 is fixedly connected to the carriage, and the other end of the guiding bracket 21 extends towards the front of the vehicle.

[0032] In a specific embodiment of the present invention, one end of the guiding bracket 21 is fixedly connected to the top of the carriage, and the other end of the guiding bracket 21 extends to the top of the front of the vehicle, so that when storing the hose 5, the hose 5 can be stored by driving the vehicle forward. Of course, the guiding bracket 21 can also be provided on the side of the carriage 41, and the hose 5 can be stored by driving the vehicle in a direction parallel to the hose when storing the hose 5, so that the driver's vision will not be affected when storing the hose 5.

[0033] Further, the guiding device 2 further includes an axially moving guiding device 23 disposed inside the carriage. When the hose is being stored, the axially moving guiding device 23 controls the hose to reciprocate axially on the reel 31 of the hose storage device, so that the hose 5 reciprocates axially (i.e., the axial direction of the reel) along the hose storage device and winds around the reel 31.

[0034] The axially moving guiding device 23 of a specific embodiment of the present invention is as Figure 4 shown, and includes an axial track 231 parallel to the axial direction of the hose storage device 3 and a limit guiding device 232 slidably connected to the axial track 231. The hose passes through the inside of the limit guiding device 232, and the axially moving driving device 233 drives the limit guiding device 232 to move on the axial track 231 to drive the hose 5 to reciprocate axially along the hose storage device 3.

[0035] Among them, the axial track 231 can be a transmission device in any structural form such as a synchronous belt, a rack and pinion, and a ball screw to drive the limit guiding device 232 to move under the drive of the axially moving driving device 233. When storing the hose, by limiting the moving speed of the limit guiding device 232 and the rotating speed of the reel 31, the hose 5 can be evenly wound around the rotating shaft of the reel 31.

[0036] It should be noted that the installation positions of the guiding bracket 21, the reel 31, and the axial track 231 mentioned in the embodiments of the present invention are correspondingly set. The reel shaft of the reel 31 can be installed horizontally or vertically. When the guiding bracket 21 is installed at the top of the carriage, the reel shaft of the reel 31 is preferably installed horizontally. When the guiding bracket 21 is installed on the side of the carriage, the reel shaft of the reel 31 is preferably installed vertically, which can avoid the problem of excessive resistance caused by too large a bending angle of the hose 5.

[0037] Further, a hose passage is provided inside the limit guiding device 232, and rollers are provided on the side wall. When the hose passes through, it contacts the rollers, so as to reduce the resistance when the hose passes through the limit guiding device 232 during hose storage. In addition, since the limit guiding device 232 drives the hose 5 to reciprocate axially along the hose storage device 3, relative displacement between the hose 5 and the limit guiding device 232 in the axial direction will inevitably occur during the movement. Setting rollers on the side wall of the limit guiding device 232 can effectively reduce the collision and friction between the hose 5 and the side wall of the frame of the limit guiding device 232.

[0038] Further, the guiding device 2 further includes rollers 24 on the front and rear sides or one side of the axially moving guiding device 23. The rollers 24 are parallel to the axial guide 231 of the axially moving guiding device 23 to provide vertical support for the water hose 5 and reduce the resistance when the water hose is stored. The length of the rollers 24 is preferably equivalent to the axial length of the reel 31 to provide vertical support in the entire axial direction of the reel 31.

[0039] The water hose laying vehicle of the present invention includes a vehicle body. A guiding device 2 is provided on the carriage of the vehicle body. A water squeezing device 1 is provided at the front end of the guiding device 2, and a water hose 5 storage device 3 is provided at the rear end of the guiding device 2. The water squeezing device 1 can squeeze the water in the water hose 5. The guiding device 2 can drive the water hose 5 to move along the axial direction of the water hose storage device 3 and guide the water hose 5 to the water hose storage device 3 to achieve the storage of the water hose. The water hose laying vehicle provided by the present invention can quickly lay and pick up the water hose when firefighters perform fire fighting operations, which is beneficial for taking water from a distant water source to perform fire fighting operations. It is very suitable for old residential areas and forest fires and can reduce the working intensity of firefighters.

[0040] Furthermore, the water hose laying vehicle according to the embodiment of the present invention further includes the water squeezing device 1 in the following embodiments, as Figure 5 、 Figure 6 shown. The water squeezing device 1 according to the embodiment of the present invention is used to perform a water squeezing operation on the fire hose 5 and includes a fixedly arranged first water squeezing wheel 12 and a second water squeezing wheel 13 that can move relative to the first water squeezing wheel 12. When the water hose body passes through, a water squeezing channel is formed through the gap between the first water squeezing wheel 12 and the second water squeezing wheel 13 to squeeze the water in the water hose 5. When the water hose joint passes through, the second water squeezing wheel 13 moves relative to the first water squeezing wheel 12, so that the gap between the first water squeezing wheel 12 and the second water squeezing wheel 13 becomes wider for the water hose joint to pass through.

[0041] Furthermore, the water squeezing device 1 specifically includes a water squeezing device side plate 11. The first water squeezing wheel 12 is fixedly installed on the water squeezing device side plate 11. A water squeezing arm 14 is movably connected to the water squeezing device side plate 11 through a first rotating shaft 141. The second water squeezing wheel 13 is provided on the water squeezing arm 14. When the water squeezing arm 14 rotates, it drives the second water squeezing wheel 13 to move relative to the first water squeezing wheel 11.

[0042] When performing a water squeezing operation on the water hose 5, the remaining water in the water hose 5 is squeezed out by the self-weight of the second water squeezing wheel 14. When the water hose joint passes through, the gap between the first water squeezing wheel 12 and the second water squeezing wheel 13 is increased by driving the second water squeezing wheel 13 to rotate around the first rotating shaft 141 for the water hose joint to pass through.

[0043] After the water hose connector passes through, under the action of the self-weight of the second water squeezing wheel 13, the second water squeezing wheel 14 quickly returns to the upper end of the first water squeezing wheel 12 to realize the water squeezing operation on the water hose 5. It can be understood that an elastic member is also provided between the first rotating shaft 141 and the side plate 11 of the water squeezing device to prompt the second water squeezing wheel 13 to quickly fall back to the upper end of the first water squeezing wheel 12 after the water hose connector passes through. The elastic member can be a torsion spring. In the present invention, the second water squeezing wheel 13 rotates driven by the water squeezing arm 14, and can continuously perform the water squeezing operation on the water hose, improving the water squeezing efficiency.

[0044] Further, the water squeezing device 1 further includes a locking unit and a switch unit. The locking unit is used to lock the position of the second water squeezing wheel when the water hose body passes through, and the switch unit can control the locking unit to open the locking unit when the water hose connector passes through.

[0045] Specifically, when the water hose body passes through the water squeezing device 1, the position of the water squeezing arm 14 is locked to limit the gap between the first water squeezing wheel 12 and the second water squeezing wheel 13 to provide a constant water squeezing pressure for the water hose. When the water hose connector passes through the water squeezing device 1, it triggers to open the water squeezing arm locking device to release the position locking of the water squeezing arm 14, and the water squeezing arm 14 rotates around the first rotating shaft 141 driven by the water hose connector to allow the water hose connector to pass through the water squeezing device 1. The locking unit and the switch unit of the embodiment of the present invention form a water squeezing arm locking device, which can not only fully squeeze the water in the water hose body, but also continuously supply the water hose 5 to pass through the water squeezing device 1, improving the water squeezing efficiency.

[0046] In a specific embodiment of the present invention, the locking unit and the switch unit are as Figure 5 、 Figure 6 shown. The locking unit includes a locking hook 15 and a locking column 142. The locking hook 15 is connected to the side plate 11 of the water squeezing device through a second rotating shaft 152. The locking column 142 is arranged on the water squeezing arm 14. The hook-shaped structure 151 at one end of the locking hook 15 cooperates with the locking column 142 to realize the position locking of the second water squeezing wheel 13.

[0047] Further, the switch unit includes a water hose connector baffle 16 arranged on the second rotating shaft 152. The water hose connector baffle 16 is arranged at the proximal end of the water hose inlet relative to the locking hook 15. When the water hose connector passes through, it drives the water hose connector baffle 16 to rotate forward, causing the locking hook 15 to rotate around the second rotating shaft 152 so that the hook-shaped structure 151 at one end of the locking hook 15 disengages from the locking column 142 to release the locking state between the locking hook 151 and the locking column 142, enabling the water hose connector to pass through the water squeezing device 1 smoothly. The water hose inlet in the embodiment of the present invention is the inlet position when the water hose 5 enters the water squeezing device 1.

[0048] Further, a return baffle 17 is also provided on the side plate 11 of the water squeezing device. The return baffle 17 is arranged proximal to the water inlet relative to the water hose joint baffle 16 to define the falling position of the water hose joint baffle 16. In addition, an elastic member is provided between the second rotating shaft 152 and the side plate 11 of the water squeezing device to quickly return the locking hook 15 after the water hose joint passes through the water squeezing device 1. The elastic member can be a torsion spring.

[0049] Further, a drag wheel 111 is also provided at the front ends of the first water squeezing wheel 12 and the second water squeezing wheel 13 to drag the water hose 5 to the gap inlet between the first water squeezing wheel 12 and the second water squeezing wheel 13. When storing the water hose, dragging the water hose near the gap between the first water squeezing wheel 12 and the second water squeezing wheel 13 plays a certain buffering role in the storage of the water hose and reduces the resistance generated when the water hose directly passes through the first water squeezing wheel and the second water squeezing wheel.

[0050] Further, a pre - guiding wheel 112 is also provided at the front ends of the first water squeezing wheel 12 and the second water squeezing wheel 13. The pre - guiding wheel 112 is connected to the side plate 11 of the water squeezing device through a connecting seat. The pre - guiding wheel 112 is a roller structure arranged horizontally and / or vertically to limit the water hose inlet within the middle channel of the pre - guiding wheel 112. To limit the water hose within the space range of the first water squeezing wheel and the second water squeezing wheel before the water hose enters the gap between the first water squeezing wheel 12 and the second water squeezing wheel 13. In a preferred embodiment of the present invention, the pre - guiding wheel 112 is closer to the proximal end of the water hose inlet than the drag wheel 111.

[0051] The water squeezing arm locking device of another embodiment of the present invention is as Figure 7 shown, wherein the locking unit includes electromagnets 19 respectively arranged on the water squeezing arm 14 and the side plate 11 of the water squeezing device, and the switch unit is an induction switch arranged proximal to the water hose inlet relative to the second water squeezing wheel 13. The induction switch triggers the power - off of the electromagnet when the water hose joint passes through. In addition, the induction switch can also be a laser induction switch. When the water hose joint passes through the laser induction switch, the laser induction switch acts to cut off the power of the electromagnet 19, and the water squeezing arm 14 rotates to allow the water hose joint to pass through.

[0052] The water squeezing arm locking device of another embodiment of the present invention is as Figure 8 shown, and includes an elastic connecting rod 18 connected between the water squeezing arm 14 and the side plate 11 of the water squeezing device. The elastic connecting rod 18 is arranged distal to the water hose inlet relative to the second water squeezing wheel 13. When the water hose body passes through, the elastic force of the elastic connecting rod 18 squeezes the water squeezing arm 14 to lock the position of the second water squeezing wheel 13. When the water hose joint passes through, the second water squeezing wheel 13 moves relative to the first water squeezing wheel 12 by the water hose joint squeezing the elastic connecting rod 18.

[0053] The water squeezing device provided by the present invention specifically includes a first water squeezing wheel 12 fixedly arranged and a second water squeezing wheel 13 that can move relative to the first water squeezing wheel 12. When the water belt body passes through, a water squeezing channel is formed by the gap between the first water squeezing wheel 12 and the second water squeezing wheel 13. When the water belt joint passes through, the second water squeezing wheel 13 moves relative to the first water squeezing wheel 12, so that the gap between the first water squeezing wheel 12 and the second water squeezing wheel 13 becomes wider for the water belt joint to pass through. When storing the fire hose, it can not only fully squeeze out the remaining water in the fire hose but also ensure that the water belt joint passes through quickly and smoothly, improving the efficiency of water belt storage.

[0054] The above further describes the present invention with the aid of specific embodiments. However, it should be understood that the specific description here should not be construed as a limitation on the essence and scope of the present invention. Various modifications made by those of ordinary skill in the art after reading the above embodiments belong to the scope protected by the present invention. Among the various specific technical features described in the above specific embodiments, they can be combined in any suitable manner without conflict. To avoid unnecessary repetition, the embodiments of the present invention will not separately describe various possible combination methods.

[0055] If there are directional indications (such as up, down, left, right, front, back...) involved in the embodiments of the present invention, the directional indications are only used to explain the relative positional relationship and movement conditions between components in a specific posture (as shown in the drawings). If the specific posture changes, the directional indications will also change accordingly.

Claims

1. A water squeezing device for performing a water squeezing operation on a fire hose, characterized in that, It includes a first water squeezing wheel fixedly arranged and a second water squeezing wheel that can move relative to the first water squeezing wheel. When the water belt body passes through, a water squeezing channel is formed by the gap between the first water squeezing wheel and the second water squeezing wheel. When the water belt joint passes through, the second water squeezing wheel moves relative to the first water squeezing wheel, so that the gap between the first water squeezing wheel and the second water squeezing wheel becomes wider for the water belt joint to pass through; The water squeezing device further includes side plates of the water squeezing device. The first water squeezing wheel, the first rotating shaft and the second rotating shaft are arranged on the side plates of the water squeezing device. The water squeezing arms are arranged on the first rotating shaft. The second water squeezing wheel and the locking column are arranged on the water squeezing arms. The locking hook is arranged on the second rotating shaft. The hook-shaped structure at one end of the locking hook cooperates with the locking column on the water squeezing arm to lock the position of the second water squeezing wheel. When the locking hook and the locking column are locked, the locking column is closer to the water belt inlet than the hook-shaped structure at one end of the locking hook; The water belt joint baffle is further arranged on the second rotating shaft. The water belt joint baffle is arranged proximal to the water belt inlet relative to the locking hook. When the water belt joint passes through, the water belt joint drives the water belt joint baffle to rotate forward, so that the locking hook rotates around the second rotating shaft to make the hook-shaped structure at one end of the locking hook disengage from the locking column; The water squeezing arm rotates around the first rotating shaft driven by the water belt joint, so that the second water squeezing wheel moves relative to the first water squeezing wheel, and the water belt joint passes through the middle of the first water squeezing wheel and the second water squeezing wheel.

2. The water squeezing device according to claim 1, characterized in that, The return baffle is arranged on the side plates of the water squeezing device. The return baffle is arranged proximal to the water belt inlet relative to the water belt joint baffle to limit the falling position of the water belt joint baffle.

3. The water squeezing device according to claim 1, characterized in that, It includes an elastic connecting rod connected between the water squeezing arm and the side plates of the water squeezing device. The elastic connecting rod is arranged distal to the water belt inlet relative to the second water squeezing wheel. When the water belt body passes through, the elastic force of the elastic connecting rod squeezes the water squeezing arm to lock the position of the second water squeezing wheel. When the water belt joint passes through, the second water squeezing wheel moves relative to the first water squeezing wheel by squeezing the elastic connecting rod through the water belt joint.

4. The water squeezing device according to claim 1, characterized in that, The front ends of the first water squeezing wheel and the second water squeezing wheel are provided with a drag wheel and a pre-guide wheel. The drag wheel drags the water belt to the entrance of the gap between the first water squeezing wheel and the second water squeezing wheel. The pre-guide wheel is a roller structure arranged left and right and / or up and down to limit the water belt inlet within the middle channel of the pre-guide wheel.

5. A hose laying vehicle, characterized in that, It includes the water squeezing device according to any one of claims 1-4.

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