WO2024022331A1

WO2024022331A1 - Improved water-discharging transmission structure for winding fire hose

Info

Publication number: WO2024022331A1
Application number: PCT/CN2023/109101
Authority: WO
Inventors: 王建勇
Original assignee: 王建勇
Priority date: 2022-07-25
Filing date: 2023-07-25
Publication date: 2024-02-01
Also published as: CN117482451A

Abstract

An improved water-discharging transmission structure for winding a fire hose, comprising a base (1), and a swing arm (2) having one side pivotally connected onto the base. The base and the swing arm are elastically connected on the pivotal connection side by means of first springs (5); the base is provided with a lower pressing roller (4), and the swing arm is provided with an upper pressing roller (3); the swing arm elastically springs back to the original position by means of the first springs, and the swing arm and the base are fixedly clamped by means of a clamping structure; after the swing arm and the base are clamped, a space through which a fire hose passes is reserved between the upper pressing roller and the lower pressing roller, the upper pressing roller and the lower pressing roller squeezing the fire hose to discharge water; the clamping structure is arranged on the side departing from the side of the pivotal connection of the swing am and the base, and can automatically and repeatedly clamp the swing arm and the base. The water-discharging transmission structure for winding a fire hose achieves continuous and automatic winding of a fire hose and a fire hose coupling, and can fully discharge water in the fire hose.

Description

An improved drainage transmission structure for fire hose rewinding

Technical field

The invention belongs to the field of fire protection technology, and specifically relates to an improved drainage transmission structure for rewinding fire hoses.

Background technique

Fire hoses are hoses used to transport high-pressure water or flame-retardant liquids such as foam. Traditional fire hoses are lined with rubber and the outer surface is wrapped with flax braid. Advanced fire hoses are made of polymer materials such as polyurethane. , there are metal joints at both ends of the fire hose, which can be connected to another hose to extend the distance or to a nozzle to increase the liquid spray pressure.

After the fire extinguishing is completed, the fire hose needs to be rolled up. The traditional way to store fire hoses is for on-site firefighters to roll them up manually. Since the fire hose is wet and long, and the firefighters have just started firefighting work, the rewinding of the fire hose is easy to consume the firefighters' physical strength, and it is difficult to squeeze out the remaining water in the fire hose. The weight of the fire hose increases, which increases the burden on subsequent transportation of the fire hose, affects the handling efficiency, and delays firefighting time. It can be seen that how firefighters can wind up and store wet and long fire hoses, and that fire hoses tend to retain more moisture, resulting in insufficient winding tightness and heavy defects.

Chinese invention patent CN111632325 discloses a fire hose rewinding device, which includes a base plate. A first upright column and a second upright column are fixed on the base plate. A rotating circular tube is connected to a bearing on the second upright column. The end of the rotating circular tube is fixed with a The first baffle is provided with a central tube, the side wall of the central tube is provided with a strip opening, and the bottom plate is provided with a driving assembly; the first column is provided with a first support shaft and a second support shaft. The first support shaft and the second support shaft are respectively provided with a first rotating sleeve and a second rotating sleeve. The second supporting shaft is fixed on the side of the first upright column, and a pressing assembly is also provided on the first upright column. The fire hose rewinding device passes the water hose between the first rotating sleeve and the second rotating sleeve and extends into the strip opening, so that the hose head is embedded in the central cylinder, and the central cylinder is driven by the motor to rotate, that is, The water hose can be rolled up, and the first rotating sleeve and the second rotating sleeve are used to squeeze the water hose to squeeze out the remaining water in the hose. However, it cannot pass the fire hose joints connected to the fire hose, and only winds up one section of the fire hose. It cannot be operated to wind up the fire hoses connected by multiple fire hose joints, and it is necessary to Manual operation, collecting one piece at a time, cannot truly liberate manpower.

Therefore, how to completely solve the problems that fire hoses and fire hose joints cannot be continuously rolled up, fire hoses are not completely drained, and fire hoses cannot pass when folded, and simultaneously realize the continuous rolling up of fire hoses and fire hose joints, and fire protection The water hose drainage and fire hose can also be folded to pass through, which is a technical problem that those skilled in the art need to solve urgently.

Contents of the invention

The object of the present invention is to provide an improved drainage transmission structure for fire hose rewinding in view of the problem of fixing the fire hose joints in the prior art.

To this end, the above objects of the present invention are achieved through the following technical solutions:

An improved drainage transmission structure for fire hose rewinding, which is characterized by: including a base and a swing arm pivotally connected to the base on one side, wherein the base and the swing arm are elastically connected through a first spring on one side of the pivot connection. Connection, the base is equipped with a lower pressure roller, and the swing arm is equipped with an upper pressure roller. The swing arm uses the first spring to elastically rebound and is fixed to the swing arm and the base through the clamping structure. After the swing arm and the base are clamped, the upper pressure roller and the lower pressure roller are clamped. A space is reserved between the pressure rollers for the fire hose to pass through, and the fire hose is squeezed and drained by the upper and lower pressure rollers. The clamping structure is arranged on the side deviating from the pivot connection between the swing arm and the base. , can automatically and repeatedly clamp the swing arm and the base;

The swing arm is equipped with a trigger rod on the outside of the upper pressure roller. The trigger rod is provided with a trigger piece. The inner side of the trigger piece is fixedly installed on the trigger rod. The outer side has a gentle arc surface for the fire hose joint to contact and push to rotate from different angles; fire protection The hose joint pushes the rotating trigger piece, and the trigger piece rotates to drive the trigger rod to rotate to unlock the clamping structure and push the swing arm to rotate. The clamping structure opens, the swing arm rotates to open the opening with the base, and the upper and lower pressure rollers are enlarged. The gap between them is for the fire hose joint to pass; after the fire hose joint passes, the first spring rebounds and pulls back the swing arm, and the clamping structure automatically clamps the swing arm and the base to realize the extrusion and discharge of the upper and lower pressure rollers. Water in a fire hose.

While adopting the above technical solutions, the present invention can also adopt or combine the following technical solutions:

As a preferred technical solution of the present invention: the base includes baffles on both sides and a bottom plate for fixing the baffles on both sides. The baffles on both sides are respectively fixed to the shafts at both ends of the lower pressure roller. The baffles on both sides are higher than the height of the lower pressure roller. And form a U-shaped opening for the fire hose to pass through and limit it;

The swing arm includes a left swing arm and a right swing arm. The bottoms of the left swing arm and the right swing arm are respectively pivoted and installed on the outside of the baffle. The left swing arm and the right swing arm are respectively fixed to the shafts at both ends of the upper pressure roller. The left swing arm and the right swing arm are respectively fixed on the outside of the baffle. The right swing arm is fixed with both ends of the trigger rod at the upper end and outer side of the upper pressure roller, so that when the fire hose interface passes through, the trigger is triggered first, and the clamping structure is released so that the swing arm rotates relative to the base to expand the upper pressure roller and the The distance between the lower rollers.

As a preferred technical solution of the present invention: the clamping structure includes a limiting hook, a hook groove and a second spring;

The trigger rod is rotatably installed between the left swing arm and the right swing arm, and limit hooks are fixedly installed at both ends of the trigger rod. When the trigger rod rotates, the limit hooks are driven to rotate;

The base is provided with a hook groove at a matching position. When the limit hook is locked in the hook groove, it hooks the swing arm on the base; when the trigger rod rotates, it drives the limit hook to rotate away from the hook groove, driving the swing arm to release the connection with the base. The hook is connected to the swing arm through the second spring, and the second spring is used to return to the hook groove;

Wherein, the hooking part of the limiting hook is a sliding surface.

As a preferred technical solution of the present invention: the hook groove is provided with a gentle arc surface for the limit hook to travel back and forth. The gentle arc surface is arranged on the outer side of the upper end of the hook groove, and the limit hook slides in. Or leave the gentle arc surface hook to catch the hook groove or break away from the hook groove.

As a preferred technical solution of the present invention: the hook groove is equipped with a limit hook guide bevel, the limit hook guide bevel is provided at the sliding front end that slides into the hook groove, and the limit hook guide bevel provides a limit hook Resist the elastic force of the second spring and gradually open and slide until the hook groove is clamped.

As a preferred technical solution of the present invention: the hooking groove is equipped with an adjusting member, and the adjusting member includes a second hooking groove and an adjusting rod. The second hooking groove is fixedly installed on the upper end of the adjusting rod and is close to the adjusting rod. The hook groove is designed, and the groove of the second hook groove is similar to the groove of the hook groove. The adjustment rod is height-adjustable and installed on the outside of the baffle to adjust the hook limit of the second hook groove. Adjust the height of the hook, adjust the hook angle of the swing arm and baffle, and adjust the distance between the upper and lower pressure rollers to adapt to fire hoses of different thicknesses.

As a preferred technical solution of the present invention: the lower end of the adjustment rod is provided with an adjustment rod adjustment hole, and the adjustment rod adjustment hole is provided with an adjustment slope. The adjustment slope is used for the adjustment screw to be locked at different height positions to adjust the height position of the adjustment rod;

Or, the adjusting rod is attached to the outer wall of the baffle, and the dimensions are set on the baffle and the adjusting rod respectively. The baffle is used as the main ruler, and the adjusting rod is used as the vernier to accurately control the height position of the adjusting rod;

Or, the adjustment member is also provided with a locking hook. One end of the locking hook is rotatably and lockably mounted on the baffle, and the other end is provided with a groove for locking the limit hook, and the locking limit hook rotates to fix it. The gap between the upper pressure roller and the lower pressure roller.

As a preferred technical solution of the present invention: the base is provided with a guide slope on the side away from the pivoting side of the swing arm for the fire hose joint to overlap and slide;

The guide slope is equipped with a front roller at the lowest point.

As a preferred technical solution of the present invention: the first spring is a tension spring, which is symmetrically arranged on both sides of the baffle, and connects the left swing arm to one side of the baffle, and the right swing arm to the other side of the baffle respectively;

Or, the first spring is a torsion spring, and the left swing arm and one side baffle, as well as the right swing arm and the other side baffle are reset by installing a torsion spring at the pivot connection.

As a preferred technical solution of the present invention: the two ends of the rotating shaft of the lower pressing roller are provided with eccentric blocks, the eccentric blocks are square, and the distances from the axis of the rotating shaft of the lower pressing roller to each side of the eccentric block are different. ;

The eccentric block can be detachably installed on the base, and the eccentric block can be rotated to adjust the installation position of the lower pressure roller on the base.

The drainage transmission structure for rewinding fire hoses provided by the present invention realizes the continuous and automatic rewinding of fire hoses and fire hose joints through the cooperation of the swing arm, the base and the clamping structure, and can fully discharge the fire water. Water in the belt; use the cooperation of the trigger rod and the trigger piece to quickly and accurately trigger the release of the clamping structure, providing a space for the fire hose joint to open and pass; use the setting of the sliding surface of the limit hook to make the limit The hook can automatically slide into or out of the hook groove; the cooperation between the gentle arc surface of the hook groove and the sliding surface of the limit hook provides an elastic space for the folded fire hose to pass through, and can effectively discharge single-layer fire hoses. Fire hose water. When the drainage transmission structure for rewinding fire hoses of the present invention is used in rewinding fire hoses, there is no need to manually rewind the fire hoses section by section, which provides the possibility for automatic and continuous rewinding of fire hoses. It also provides the possibility to achieve simultaneous rewinding and drainage simultaneously. The transmission is stable and can be flexibly adapted to the drainage transmission of folded fire hoses or fire hoses with foreign objects. It has great promotion and application value in the field of fire hose rewinding. It greatly reduces the workload of firefighters and provides operating space for lightweight work.

Description of drawings

Figure 1 is a schematic structural diagram of a partial explosion of the locking hook of the present invention;

Figure 2 is a schematic structural diagram 1 of the swing arm 2 and base 1 of the present invention when they are opened;

Figure 3 is a schematic structural diagram 2 of the swing arm 2 and base 1 of the present invention when they are opened;

Figure 4 is a schematic diagram 1 showing the cursor size when the swing arm 2 and the base 1 are closed according to the present invention;

Figure 5 is a schematic diagram 2 showing the cursor size when the swing arm 2 and the base 1 are closed according to the present invention;

Figure 6 is a schematic structural diagram of the swing arm 2 and the base 1 of the present invention when they are slightly stretched;

In the figure, the base 1; the baffle 101; the bottom plate 102; the guide slope 103; the front roller 104; the limit hook guide slope 105; the hook groove 106; the gentle arc surface 1041; the swing arm 2; the left swing arm 201; the right Swing arm 202; limit hook 204; upper pressure roller 3; lower pressure roller 4; first spring 5; trigger lever 8; trigger member 801; second spring 9; adjustment member 11; second hook groove 1101; adjustment lever 1102; Adjustment rod adjustment hole 1103; Adjustment screw 1104; Adjustment slope 1105; Locking hook 13; Eccentric block 14.

具体实施方式Detailed ways

The present invention will be described in further detail with reference to the accompanying drawings and specific examples.

实施例1Example 1

As shown in Figures 1 to 6, an improved drainage transmission structure for fire hose rewinding according to the present invention includes a base 1 and a swing arm 2 with one side pivotally connected to the base 1, wherein the base 1 and the swing arm 2 The arm 2 is elastically connected through the first spring 5 on the pivot connection side. The base 1 is provided with a lower pressure roller 4, and the swing arm 2 is provided with an upper pressure roller 3. The swing arm 2 uses the first spring 5 to elastically rebound and reset and passes through the clamping structure. Fix and clamp the swing arm 2 and the base 1. After the swing arm 2 and the base 1 are clamped, reserve a space for the fire hose to pass between the upper pressure roller 3 and the lower pressure roller 4. The upper pressure roller 3 and the lower pressure roller 4 are responsible for the fire protection. The water belt squeezes and drains water, wherein the clamping structure is set on the side deviating from the pivot connection between the swing arm 2 and the base 1, and can automatically and repeatedly clamp the swing arm 2 and the base 1;

The swing arm 2 is equipped with a trigger rod 8 on the outside of the upper pressure roller 3. The trigger rod 8 is provided with a trigger piece 801. The trigger piece 801 is fixedly installed on the trigger rod 8 on the inside and has a gentle arc on the outside for the fire hose connector to change from different angles. The angle contact and push the rotation; the fire hose joint pushes and rotates the trigger piece 801, and the trigger piece 801 rotates to drive the trigger rod 8 to rotate to unlock the clamping structure, and push the swing arm 2 to rotate, the clamping structure opens, and the swing arm 2 rotates to open and The opening of the base 1 expands the distance between the upper pressure roller 3 and the lower pressure roller 4 for the fire hose joint to pass; after the fire hose joint passes, the first spring 5 rebounds and pulls back the swing arm 2, and the clamping structure automatically locks Tighten the swing arm 2 and the base 1 to realize the upper pressure roller 3 and the lower pressure roller 4 to squeeze and discharge the water in the fire hose.

The present invention provides an improved drainage transmission structure for fire hose rewinding. The upper pressure roller 3 is fixedly installed on the swing arm 2, the lower pressure roller 4 is fixedly installed on the base 1, and one end of the swing arm 2 is pivotably installed on the base 1. The other end can be clamped repeatedly through the clamping structure, allowing the upper pressure roller 3 and the lower pressure roller 4 to pass through the fire hose, and squeeze and discharge the water in the fire hose. An improved drainage transmission structure for fire hose rewinding of the present invention uses the trigger member 801 to drive the trigger rod 8 to rotate, unlock the clamping structure, and when the fire hose joint passes, the swing arm is pushed to rotate to realize the fire water hose. The belt joint passes automatically; after the fire hose joint passes, the first spring 5 is used to pull back the swing arm 2, and the clamping structure cooperates to automatically clamp the swing arm 2 and the base 1 to realize the clamping of the upper pressure roller 3 and the lower pressure roller 4. Fire Hose.

When it is necessary to rewind the fire hose, the clamping structure clamps the swing arm 2 and the opening side of the base 1, and the transmission structure for rewinding the fire hose of the present invention is used to squeeze the remaining water in the passing fire hose. After pressing out, it is easy to roll up;

When the fire hose joint connected to the fire hose needs to pass through, the fire hose joint first touches the trigger piece 801 and drives the trigger piece 801 to rotate. The trigger piece 801 is fixedly installed on the trigger rod 8, and the trigger rod 8 is driven by the trigger piece 801. Rotate, the trigger lever 8 rotates to unlock the clamping structure, opens the opening of the swing arm 2 and the base 1, and also expands the distance between the lower pressure roller 4 and the upper pressure roller 3, providing a channel for the fire hose joint to automatically pass.

The swing arm 2 and the base 1 can be automatically pulled back through the resilience of the first spring 5 to narrow the opening of the swing arm 2 and the base 1, reducing the distance between the two. The clamping structure automatically clamps the swing arm and the base 1, realizing The upper pressure roller 3 and the lower pressure roller 4 squeeze and discharge the water in the fire hose.

The improved drainage transmission structure for fire hose rewinding in the present invention automatically and repeatedly realizes the opening and closing of the swing arm 2 and the base 1 through the cooperation of the clamping structure, thereby realizing the continuous connection between the fire hose and the fire hose interface. , passing through without interruption, simultaneously realizing that the fire hose can be fully squeezed for drainage and the fire hose joint can pass continuously and smoothly.

The base 1 includes two side baffles 101 and a bottom plate 102 for fixing the two side baffles 101. The two side baffles 101 are respectively fixed to the shafts at both ends of the lower pressure roller 4. The two side baffles 101 are higher than the height of the lower pressure roller 4. And a U-shaped opening is formed for the fire hose to pass through and limit it; the swing arm 2 includes a left swing arm 201 and a right swing arm 202. The bottoms of the left swing arm 201 and the right swing arm 202 are respectively pivoted and installed outside the baffle 101. , the left swing arm 201 and the right swing arm 202 respectively fix the shafts at both ends of the upper pressure roller 3, and the left swing arm 201 and the right swing arm 202 respectively fix the two ends of the trigger rod 8 at the upper end and outer side of the upper pressure roller 3. end, so that when the fire hose interface passes, the trigger 801 is first triggered, and the clamping structure is released so that the swing arm 2 rotates relative to the base 1 to expand the distance between the upper pressure roller 3 and the lower pressure roller 4.

The clamping structure includes a limit hook 204, a hook groove 106 and a second spring 9; the trigger rod 8 is rotatably installed between the left swing arm 201 and the right swing arm 202, and both ends of the trigger rod 8 are fixed. Install the limit hook 204. When the trigger rod 8 rotates, the limit hook 204 is driven to rotate; the base 1 is provided with a hook groove 106 at a matching position. When the limit hook 204 is hooked in the hook groove 106, it hooks the swing arm 2. On the base 1; when the trigger rod 8 rotates, it drives the limit hook 204 to rotate away from the hook groove 106, and drives the swing arm 2 to release the hook from the base 1. The limit hook 204 is connected to the swing arm 2 through the second spring 9, and uses The second spring 9 returns to the hook groove 106; wherein, the hooking part of the limiting hook 204 is a sliding surface.

The hooking part of the limit hook 204 is a sliding surface. In the present invention, the hooking part of the limit hook 204 is a sliding surface, which provides stress and pressure for the hook groove 106 and the limit hook 104 to automatically hook or slide off. possible direction of movement.

The hook groove 106 is provided with a gentle arc surface 1041 for the limit hook 204 to travel back and forth. The gentle arc surface 1041 is arranged on the outer side of the upper end of the hook groove 106, and the limit hook 204 slides into or The hook leaves the gentle arc surface 1041 and engages the hook groove 106 or breaks away from the hook groove 106 .

When rewinding the fire hose, if the thickness of the fire hose suddenly increases due to folding or other reasons, the setting of the gentle arc surface 1041 and the sliding surface of the hook part of the limit hook can cope with this situation. When the fire hose is folded, it can also be squeezed and drained to avoid jamming when the fire hose is rolled up due to the fixed distance between the upper pressure roller and the lower pressure roller. It can also avoid the jam caused by the upper pressure roller 3 and the lower pressure roller. The problem of insufficient drainage of fire hoses caused by the uneven spacing between 4.

The hook groove 106 is equipped with a limit hook guide slope 105. The limit hook guide slope 105 is provided at the sliding front end that slides into the hook groove 106. The limit hook guide slope 105 provides the limit hook 204 with resistance to the second hook. The elastic force of the two springs 9 gradually opens and slides down until the hook groove 106 is clamped.

The hook groove 106 is equipped with an adjustment member 11. The adjustment member 11 includes a second hook groove 1101 and an adjustment rod 1102. The second hook groove 1101 is fixedly installed on the upper end of the adjustment rod 1102 and is close to the hook. The groove 106 is designed, and the groove of the second hook groove 1101 is similar to the groove of the hook groove 106. The adjustment rod 1102 is height-adjustable and installed on the outside of the baffle 101 to adjust the second hook groove. 1101 hook the height of the limit hook 204, adjust the hook angle of the swing arm 2 and the baffle 101, and adjust the distance between the upper pressure roller 3 and the lower pressure roller 4 to adapt to fire hoses of different thicknesses.

In addition, in the present invention, the design of the second hook groove 1101 in the adjustment member 11 and the setting of this position cooperate with the limit hooks 204 to be fixedly installed on both ends of the trigger rod 8, so that the limit hooks 204 can be selected with the same thickness. The position hook can be directly hooked on the second hook groove 1101 without providing an inner hook part, which reduces the processing difficulty of the limit hook, reduces the material used for the limit hook 204, and reduces the production cost.

The lower end of the adjustment rod 1102 is provided with an adjustment rod adjustment hole 1103. The adjustment rod adjustment hole 1103 is provided with an adjustment slope 1105. The adjustment slope 1105 is used for the adjustment screw 1104 to be locked at different height positions to adjust the height position of the adjustment rod 1102; the adjustment rod 1102 is attached Leaning against the outer wall of the baffle 101, the baffle 101 and the adjusting rod 1102 are respectively set with dimensions. The baffle 101 is used as the main ruler, and the adjusting rod 1102 is used as a cursor to accurately regulate the height and position of the adjusting rod; the adjusting member 11 also A locking hook 13 is provided. One end of the locking hook 13 can be locked and rotated on the baffle 101. The other end is provided with a groove for a locking limit hook 204. The locking limit hook 204 rotates to fix the upper pressure. The gap between roller 3 and lower pressure roller 4.

In the present invention, the base 1 is provided with a guide slope 103 on the side away from the pivoting side of the swing arm 2 for the fire hose joint to overlap and slide; the guide slope 103 is equipped with a front roller 104 at the lowest point.

The setting of the front roller 104 can reduce the force consumed when the subsequent fire hose is rolled up, and also improves the operational stability and service life of the entire equipment. The combination of the front roller 104 and the guide slope 103 allows the fire hose joint to pass through. On the way to the upper pressure roller and the lower pressure roller, there will be no shaking due to being rolled up, and it is very smooth, which reduces the weight of the lower pressure roller 4 and improves the stability of the drainage transmission structure of the present invention.

The first spring 5 is a tension spring, which is symmetrically arranged on both sides of the baffle 101 and connects the left swing arm 201 and one side baffle 101, and the right swing arm 202 and the other side baffle 101 respectively; The first spring 5 is a torsion spring, and the left swing arm 201 and one side baffle 101, and the right swing arm 202 and the other side baffle 101 are reset by installing torsion springs at the pivot connection.

The two ends of the rotating shaft of the lower pressing roller 4 are provided with eccentric blocks 14. The eccentric blocks are square, and the distances from the axis of the rotating shaft of the lower pressing roller 4 to each side of the eccentric block 14 are different; the eccentric blocks 14 It can be detachably installed on the base 1, and the eccentric block 14 is rotated to adjust the installation position of the lower pressure roller 4 on the base 1. By installing the eccentric block 14 in different directions, the installation position of the lower pressure roller 4 is adjusted, and the distance between the upper pressure roller 3 and the lower pressure roller 4 can be adjusted, so that the same drainage transmission structure for fire hose rewinding can be It is suitable for fire hoses of different thicknesses, which expands the applicable range of the drainage transmission structure for rewinding fire hoses and is suitable for market promotion and application.

The above-mentioned specific embodiments are used to explain the present invention, and are only preferred embodiments of the present invention, rather than limiting the present invention. Any modifications and equivalent substitutions made to the present invention are within the spirit of the present invention and the protection scope of the claims. , improvements, etc., all fall into the protection scope of the present invention.

Claims

An improved drainage transmission structure for fire hose rewinding, which is characterized by: including a base and a swing arm pivotally connected to the base on one side, wherein the base and the swing arm are elastically connected through a first spring on one side of the pivot connection. Connection, the base is equipped with a lower pressure roller, and the swing arm is equipped with an upper pressure roller. The swing arm uses the first spring to elastically rebound and is fixed to the swing arm and the base through the clamping structure. After the swing arm and the base are clamped, the upper pressure roller and the lower pressure roller are clamped. A space is reserved between the pressure rollers for the fire hose to pass through. The upper pressure roller and the lower pressure roller squeeze and drain the fire hose. The clamping structure is arranged on the side deviating from the pivot connection between the swing arm and the base. Can automatically and repeatedly clamp the swing arm and base;

The swing arm is equipped with a trigger rod on the outside of the upper pressure roller. The trigger rod is provided with a trigger piece. The inner side of the trigger piece is fixedly installed on the trigger rod. The outer side has a gentle arc surface for the fire hose joint to contact and push to rotate from different angles; fire protection The hose joint pushes the rotating trigger piece, and the trigger piece rotates to drive the trigger rod to rotate to unlock the clamping structure and push the swing arm to rotate. The clamping structure opens, the swing arm rotates to open the opening with the base, and the upper and lower pressure rollers are enlarged. The gap between them is for the fire hose joint to pass; after the fire hose joint passes, the first spring rebounds and pulls back the swing arm, and the clamping structure automatically clamps the swing arm and the base to realize the extrusion and discharge of the upper and lower pressure rollers. Water in a fire hose.
The improved drainage transmission structure for fire hose rewinding as claimed in claim 1, characterized in that: the base includes baffles on both sides and a bottom plate for fixing the baffles on both sides, and the baffles on both sides are respectively fixed with lower pressure rollers. The shafts at both ends, the baffles on both sides are higher than the height of the lower pressure roller and form a U-shaped opening for the fire hose to pass through and limit it;

The swing arm includes a left swing arm and a right swing arm. The bottoms of the left swing arm and the right swing arm are pivoted and installed outside the baffle respectively. The left swing arm and the right swing arm respectively fix the shafts at both ends of the upper pressure roller. The left swing arm and the right swing arm are respectively fixed on the outside of the baffle. The swing arm is fixed with both ends of the trigger rod at the upper end and outer side of the upper pressure roller, so that when the fire hose interface passes through, the trigger is triggered first, and the clamping structure is released so that the swing arm rotates relative to the base to expand the upper pressure roller and the lower Spacing of pressure rollers.
The improved drainage transmission structure for fire hose rewinding as claimed in claim 2, characterized in that: the clamping structure includes a limit hook, a hook groove and a second spring;

The trigger rod is rotatably installed between the left swing arm and the right swing arm, and limit hooks are fixedly installed at both ends of the trigger rod. When the trigger rod rotates, the limit hooks are driven to rotate;

The base is provided with a hook groove at a matching position. When the limit hook is locked in the hook groove, it hooks the swing arm on the base; when the trigger rod rotates, it drives the limit hook to rotate away from the hook groove, driving the swing arm to release the connection with the base. The hook is connected to the swing arm through the second spring, and the second spring is used to return to the hook groove;

Wherein, the hooking part of the limiting hook is a sliding surface.
The improved fire hose transmission structure for fire hose rewinding according to claim 3, characterized in that: the hook groove cooperates with the limit hook to provide a gentle arc surface for the limit hook to travel back and forth, and the gentle arc surface The surface is arranged on the outer side of the upper end of the hook groove, and the limit hook slides into or leaves the gentle arc surface to hook or break away from the hook groove.
The improved drainage transmission structure for rewinding fire hoses according to claim 3, characterized in that: the hook groove is equipped with a limit hook guide slope, and the limit hook guide slope is provided when sliding into the hook groove. The sliding front end of the limit hook guides the inclined surface to provide the limit hook to gradually open and slide down against the elastic force of the second spring until the hook groove is clamped.
The improved fire hose transmission structure for fire hose rewinding according to claim 3, characterized in that: the hook groove is equipped with an adjustment member, and the adjustment member includes a second hook groove and an adjustment rod, so The second hook-accommodating groove is fixedly installed on the upper end of the adjusting rod and is designed to be close to the hook-accommodating groove. The groove of the second hook-accommodating groove is similar to the groove of the hook-accommodating groove. The height of the adjusting rod is adjustable. Installed on the outside of the baffle to adjust the height of the hook limit hook of the second hook groove, adjust the hook angle of the swing arm and the baffle, and adjust the distance between the upper and lower pressure rollers to adapt to different thicknesses. Fire Hose.
The improved drainage transmission structure for fire hose rewinding as claimed in claim 6, characterized in that: the lower end of the adjustment rod is provided with an adjustment rod adjustment hole, the adjustment rod adjustment hole is provided with an adjustment slope, and the adjustment slope is used for adjusting the adjustment screw at different heights. The position is locked to adjust the height position of the adjusting lever;

Or, the adjusting rod is attached to the outer wall of the baffle, and the dimensions are set on the baffle and the adjusting rod respectively. The baffle is used as the main ruler, and the adjusting rod is used as the vernier to accurately control the height position of the adjusting rod;

Or, the adjustment member is also provided with a locking hook. One end of the locking hook is rotatably and lockably mounted on the baffle, and the other end is provided with a groove for locking the limit hook, and the locking limit hook rotates to fix it. The gap between the upper pressure roller and the lower pressure roller.
The improved drainage transmission structure for fire hose rewinding as claimed in claim 3, characterized in that: the base is provided with a guide slope on the side deviating from the swing arm pivot for the fire hose joint to overlap and slide;

The guide slope is equipped with a front roller at the lowest point.
The improved drainage transmission structure for rewinding fire hoses according to claim 2, characterized in that: the first spring is a tension spring, which is symmetrically arranged on both sides of the baffle, and is connected to the left swing arm and one side respectively. The fender, as well as the right swing arm and the other side fender;

Or, the first spring is a torsion spring, and the left swing arm and one side baffle, as well as the right swing arm and the other side baffle are reset by installing a torsion spring at the pivot connection.
The improved drainage transmission structure for rewinding fire hoses according to claim 1, characterized in that: the lower pressure roller has eccentric blocks at both ends of the rotating shaft, the eccentric blocks are square, and the rotating shaft of the lower pressure roller The distance from the axis to each side of the eccentric block is different;

The eccentric block can be detachably installed on the base, and the eccentric block can be rotated to adjust the installation position of the lower pressure roller on the base.