Improved water-discharging transmission structure for winding fire hose

Abstract

The present invention provides an improved water-discharging transmission structure for winding a fire hose, comprising a base, and a swing arm 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; the base is pivoted with a lower pressing roller, and the swing arm is pivoted with an upper pressing roller; the swing arm elastically springs back to an original position by means of the first springs, and the swing arm and the base are 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 arm and the base, and can automatically and repeatedly clamp the swing arm and the base. The improved 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

TECHNICAL FIELD

[0001] The present invention belongs to the technical field of fire fighting, and particularly relates to an improved water-discharging transmission structure for winding a fire hose.BACKGROUND

[0002] Fire hoses are flexible tubes used for transporting flame retardant liquid such as high-pressure water or foam. Traditional fire hoses are lined with rubber, and wrapped with linen braid on outer surfaces. Advanced fire hoses are made of polymeric materials like polyurethane, two ends of the fire hoses have metal couplings through which another hose can be connected to extend the distance or nozzles can be connected to increase liquid spray pressure.

[0003] After fire extinguishing is completed, it is needed to wind the fire hoses. Traditional ways to wind the fire hoses are to manually wind by on-site firefighters. Because the fire hoses are wet and long, and the firefighters have just carried out fire extinguishing, winding the fire hoses is easy to consume the physical strength of the firefighters, and it is difficult to squeeze to discharge the water residual in the fire hoses, consequently, the wound fire hoses are heavy, which increases the burden for subsequent transportation of the fire hoses, affects the handling efficiency, and delays the fire fighting time. It is a problem that when the firefighters wind and store the wet and long fire hoses, more water is residual in the fire hoses, resulting in insufficient winding tightness and high heaviness.

[0004] In Chinese invention patent CN111632325, disclosed is a fire hose winding device. The fire hose winding device includes a bottom plate; a first vertical column and a second vertical column are fixed to the bottom plate; a rotatable round pipe is connected to the second vertical column by means of a bearing; a first baffle is fixed to an end part of the rotatable round pipe; a center cylinder is arranged on the first baffle; a strip-shaped opening is formed in a side wall of the center cylinder; a drive assembly is arranged on the bottom plate; a first supporting shaft and a second supporting shaft are arranged on the first vertical column and sleeved with a first rotating sleeve and a second rotating sleeve correspondingly; the second supporting shaft is fixed to a side surface of the first vertical column; and a downward pressing assembly is further arranged on the first vertical column. According to the fire hose winding device, a hose passes between the first rotating sleeve and the second rotating sleeve, and extends in from the strip-shaped opening until a hose head is embedded in the central cylinder, and then the central cylinder is driven to rotate by means of a motor so as to wind the hose; the first rotating sleeve and the second rotating sleeve squeeze the hose to discharge the water residual in the hose. However, a fire hose coupling that is connected to the fire hose cannot pass, and the fire hose can only be wound one section by section; and in a case of winding a fire hose to which a plurality of fire hose couplings are connected, the operation cannot be performed, manual operation is needed to wind one section by section, and as a result, labor cannot really saved.

[0005] Therefore, that how to completely solve the problem that the fire hose and the fire hose couplings cannot be continuously wound, water in the fire hose cannot be completely discharged, and the folded fire hose cannot pass, and the purposes of continuously winding the fire hose and the fire hose couplings, discharging the water in the fire hose, and enabling the folded fire hose to pass through at the same time are technical problems that are urgently to be solved by those skilled in the art.SUMMARY

[0006] An objective of the present invention is to provide an improved water-discharge transmission structure for winding a fire hose to solve the problem of fixing fire hose couplings in related technology.

[0007] The above-mentioned objective of the present invention is realized through the following technical solutions: an improved water-discharging transmission structure for winding a fire hose includes a base, and a swinging arm having one side pivotally connected onto the base, in which, the base and the swing arm are elastically connected on the pivotal connection side by means of first springs; the base is provided with a lower pressing roller, and the swing arm is provided with an upper pressing roller; the swing arm elastically springs back to an original position by means of the first springs, and the swing arm and the base are 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 arm and the base, and can automatically and repeatedly clamp the swing arm and the base; the swing arm is provided with a trigger rod on an outer side of the upper pressing roller; a trigger piece is arranged on the trigger rod; an inner side of the trigger piece is fixedly installed to the trigger rod, while an outer side is structured as a smooth cambered surface through which a fire hose coupling can be in contact from different angles and pushes to realize rotation; the fire hose coupling pushes the trigger piece to rotate, the trigger piece rotates to drive the trigger rod to rotate so as to release the clamping structure and to push the swing arm to rotate, the clamping structure is opened, and the swing arm rotates to open relative opening and an opening of the base, thus the space between the upper pressing roller and the lower pressing roller is enlarged for the fire hose coupling to pass; and after the fire hose coupling passes, the first springs spring back to pull back the swing arm, and the clamping structure automatically clamps the swing arm and the base, thus the upper pressing roller and the lower pressing roller squeeze to discharge water from the fire hose.

[0008] While adopting the above-mentioned technical solution, the present invention may also adopt or combine the following technical solutions: as a preferable technical solution of the present invention: the base includes two side baffles, and a baseplate for fixing the two side baffles; the two side baffles are fixedly provided with shafts at two ends of the lower pressing roller; and the two side baffles are higher than the lower pressing roller to form a U-shaped opening for the fire hose to pass through and to limit the fire hose; the swing arm includes a left swing arm and a right swing arm; bottom parts of the left swing arm and the right swing arm are respectively pivotally installed on outer sides of the baffles; shafts at two ends of the upper pressing roller are respectively fixed to the left swing arm and the right swing arm; and the left swing arm and the right swing arm are fixedly provided with two ends of the trigger rod at an outward side of an upper end of the upper pressing roller, so that when the fire hose coupling passes, the trigger piece is triggered firstly, the clamping structure is released, and then the swing arm rotates relative to the base to enlarge the space between the upper pressing roller and the lower pressing roller.

[0009] As a preferable technical solution of the present invention: the clamping structure includes limiting hooks, hook accommodating grooves and second springs; the trigger rod is rotationally installed between the left swing arm and the right swing arm, the limiting hooks are fixedly installed at two ends of the trigger rod, and the trigger rod rotates to drive the limiting hooks to rotate; the hook accommodating grooves are formed in matched positions on the base; when the limiting hooks hook and buckle the hook accommodating grooves, the swing arm is hooked on the base; and the trigger rod rotates to drive the limiting hooks to rotate away from the hook accommodating grooves, thus the swing arm is driven to be released from the base, and the limiting hooks are connected to the swing arm by means of the second springs and spring back to the hook accommodating grooves by means of the second springs; and hooking and buckling parts of the limiting hooks are sliding surfaces.

[0010] As a preferable technical solution of the present invention: the hook accommodating grooves are provided with smooth cambered surfaces which are matched with the limiting hooks, and the limiting hooks can move back and forth through the smooth cambered surfaces; the smooth cambered surfaces are arranged on the outward sides of the upper ends of the hook accommodating grooves; and the limiting hooks slide into or away from the smooth cambered surfaces to hook and buckle the hook accommodating grooves or be separated from the hook accommodating grooves.

[0011] As a preferable technical solution of the present invention: the hook accommodating grooves are provided with limiting hook guide bevels; the limiting hook guide bevels are arranged at the sliding front ends for sliding into the hook accommodating grooves; the limiting hook guide bevels provide the limiting hooks to resist the elastic force of the second springs, and the limiting hooks are gradually opened and slide downwards till the limiting hooks are clamped in the hook accommodating grooves.

[0012] As a preferable technical solution of the present invention: the hook accommodating grooves are provided with adjusting components; the adjusting components include second hook accommodating grooves, and adjusting rods; the second hook accommodating grooves are fixedly installed in upper ends of the adjusting rods and are designed to be attached to the hook accommodating grooves, grooved parts of the second hook accommodating grooves are close to grooved parts of the hook accommodating grooves, and the adjusting rods are installed on outer sides of the baffles in a height-adjustable manner so that the height of the limiting hooks hooking and buckling the second hook accommodating grooves can be adjusted, the hooking and buckling angles of the swing arm and the baffles are adjusted, and the space between the upper pressing roller and the lower pressing roller is adjusted to adapt to fire hoses of different thicknesses.

[0013] As a preferable technical solution of the present invention: adjusting rod adjusting holes are formed in lower ends of the adjusting rods, adjusting bevels are arranged in the adjusting rod adjusting holes, and the adjusting bevels are used for adjusting screws to lock at different height positions so as to adjust the height positions of the adjusting rods; or, the adjusting rods are attached to outer walls of the baffles, the baffles and the adjusting rods are respectively provided with dimensions, the baffles are used as a main dimension, and the adjusting rods are used as a vernier so as to accurately adjust and control the height positions of the adjusting rods; or, each adjusting component is further provided with a locking hook, one end of the locking hook is rotationally installed on each baffle in a lockable mode, while the other end is provided with a grooved part for locking each limiting hook, and the limiting hook is locked from rotating, and thus the space between the upper pressing roller and the lower pressing roller can be fixed.

[0014] As a preferable technical solution of the present invention: the base is provided with a guide bevel on the side departing from pivotal connection with the swing arm, and the guide bevel is used for the fire hose coupling to be lapped and slide; and the guide bevel is provided with a front roller at the lowest position.

[0015] As a preferable technical solution of the present invention: the first springs are extension springs, are symmetrically arranged on the two sides of the baffles, and respectively connect the left swing arm with the baffle on one side, and connect the right swing arm with the baffle on the other side; or, the first springs are torsional springs; and the left swing arm and the baffle on one side, and the right swing arm and the baffle on the other side spring back to original positions by the torsional springs installed at the pivotal connection parts.

[0016] As a preferable technical solution of the present invention: eccentric blocks are arranged at two ends of the rotating shaft of the lower pressing roller, the eccentric blocks are square, and the distance from an axis of the rotating shaft of the lower pressing roller to all edges of the eccentric blocks is different; and the eccentric blocks are detachably installed on the base, and the eccentric blocks are rotationally installed so that the installation position of the lower pressing roller on the base can be adjusted.

[0017] According to the improved water-discharge transmission structure for winding the fire hose, through the cooperation of the swing arm, the base and the clamping structure, the fire hose and the fire hose coupling can be continuously and automatically wound, and water in the fire hose can be completely discharged; through the cooperation of the trigger rod and the trigger piece, the clamping structure can be rapidly and accurately triggered to be released, thus an open space is provided for the fire hose coupling to pass through; through the sliding surfaces of the limiting hooks, the limiting hooks can automatically slide into or out of the hook accommodating grooves; and through the cooperation of the smooth cambered surfaces of the hook accommodating grooves and the sliding surfaces of the limiting hooks, an elastic space is provided for the folded fire hose, and water in the single-layer fire hose can be effectively discharged. When the improved water-discharge transmission structure for winding the fire hose according to the present invention is applied to winding of the fire hose, it is not needed to manually wind the fire hose section by section, so the possibility is provided for automatic and continuous winding of the fire hose, the possibility is also provided for discharging water while winding; and the transmission is stable, it can flexibly adapt to water-discharge transmission of the folded fire hose or a fire hose with foreign matters, it has a great application and popularization value in the field of fire hose winding, greatly decreases the workload of firefighters, and provides an operation space for low workload of the firefighters.BRIEF DESCRIPTION OF THE DRAWINGS

[0018] FIG. 1 is a local exploded structural schematic diagram of a locking hook according to the present invention; FIG. 2 is a structural schematic diagram 1 of a swing arm 2 and a base 1 in opening according to the present invention; FIG. 3 is a structural schematic diagram 2 of a swing arm 2 and a base 1 in opening according to the present invention; FIG. 4 is a schematic diagram 1 of vernier size display of a swing arm 2 and a base 1 in closing according to the present invention; FIG. 5 is a schematic diagram 2 of vernier size display of a swing arm 2 and a base 1 in closing according to the present invention; FIG. 6 is a structural schematic diagram of a swing arm 2 and a base 1 in slight opening according to the present invention;

[0019] In the figures, base 1; baffle 101; baseplate 102; guide bevel 103; front roller 104; limiting hook guide bevel 105; hook accommodating groove 106; smooth cambered surface 1041; swing arm 2; left swing arm 201; right swing arm 202; limiting hook 204; upper pressing roller 3; lower pressing roller 4; first spring 5; trigger rod 8; trigger piece 801; second spring 9; adjusting component 11; second hook accommodating groove 1101; adjusting rod 1102; adjusting rod adjusting hole 1103; adjusting screw 1104; adjusting bevel 1105; locking hook 13; eccentric block 14.DETAILED DESCRIPTION OF THE PRESENT INVENTION

[0020] The present invention is described in further detail with reference to the accompanying drawings and specific embodiments.Embodiment 1

[0021] As shown in FIG. 1 to FIG. 6, an improved water-discharging transmission structure for winding a fire hose according to the present invention includes a base 1, and a swinging arm 2 having one side pivotally connected onto the base 1, in which, the base 1 and the swing arm 2 are elastically connected on the pivotal connection side by means of first springs 5; the base 1 is provided with a lower pressing roller 4, and the swing arm 2 is provided with an upper pressing roller 3; the swing arm 2 elastically springs back to an original position by means of the first springs 5, and the swing arm 2 and the base 1 are clamped by means of a clamping structure; after the swing arm 2 and the base 1 are clamped, a space through which a fire hose passes is reserved between the upper pressing roller 3 and the lower pressing roller 4, the upper pressing roller 3 and the lower pressing roller 4 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 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 provided with a trigger rod 8 on an outer side of the upper pressing roller 3; a trigger piece 801 is arranged on the trigger rod 8; an inner side of the trigger piece 801 is fixedly installed to the trigger rod 8, while an outer side is structured as a smooth cambered surface through which a fire hose coupling can be in contact from different angles and pushes to realize rotation; the fire hose coupling pushes the trigger piece 801 to rotate, the trigger piece 801 rotates to drive the trigger rod 8 to rotate so as to release the clamping structure and to push the swing arm 2 to rotate, then the clamping structure is opened, and the swing arm 2 rotates to open a relative opening and an opening of the base 1, thus the space between the upper pressing roller 3 and the lower pressing roller 4 is enlarged for the fire hose coupling to pass; and after the fire hose coupling passes, the first springs 2 spring back to pull back the swing arm 2, and the clamping structure automatically clamps the swing arm 2 and the base 1, thus the upper pressing roller 3 and the lower pressing roller 4 squeeze to discharge water from the fire hose.

[0022] According to the improved water-discharging transmission structure for winding the fire hose in the present invention, the upper pressing roller 3 is fixedly installed on the swing arm 2, and the lower pressing roller 4 is fixedly installed on the base 1; one end of the swing arm 2 is pivotally installed on the base 1, while the other end can be repeatedly clamped by means of the clamping structure, so that the upper pressing roller 3 and the lower pressing roller 4 pass through the fire hose and squeeze to discharge water in the fire hose. According to the improved water-discharging transmission structure for winding the fire hose in the present invention, the trigger rod 8 is driven to rotate by the trigger piece 801, then the clamping structure is released, and when the fire hose coupling passes, the swing arm is pushed to rotate, so that the fire hose coupling can automatically pass; and after the fire hose coupling passes, the swing arm 2 is pulled back by means of the first springs 5, and the clamping structure is matched to automatically clamp the swing arm 2 and the base 1, and therefore the upper pressing roller 3 and the lower pressing roller 4 clamp the fire hose.

[0023] When it is needed to wind the fire hose, the clamping structure clamps the opening sides of the swing arm 2 and the base 1, and after the transmission structure for winding the fire hose according to the present invention is used for squeezing the passed fire hose to discharge the residual water, the fire hose is conveniently wound; when the fire hose coupling connected to the fire hose needs to pass, the fire hose coupling is in contact with the trigger piece 801 and then drives the trigger piece 801 to rotate, the trigger piece 801 is fixedly installed on the trigger rod 8, the trigger rod 8 is driven by the trigger piece 801 to rotate, the trigger rod 8 rotates to release the clamping structure, openings of the swing arm 2 and the base 1 are opened, moreover, the distance between the lower pressing roller 4 and the upper pressing roller 3 is increased, and thus a channel is provided for the fire hose coupling to automatically pass.

[0024] The swing arm 2 and the base 1 can be automatically pulled back through elastic springing-back force of the first springs 5 to shrink the openings of the swing arm 2 and the base 1, thus the space between the swing arm 2 and the base 1 is reduced; and the clamping structure automatically clamps the swing arm and the base 1, so the upper pressing roller 3 and the lower pressing roller 4 squeeze to discharge water in the fire hose.

[0025] According to the improved water-discharging transmission structure for winding the fire hose in the present invention, through the cooperation of the clamping structure, the swing arm 2 and the base 1 are automatically and repeatedly opened and closed, thus the fire hose and the fire hose coupling can continuously pass through, and meanwhile, fully squeezing the fire hose to discharge water and enabling the fire hose coupling to continuously and smoothly pass can be synchronously implemented.

[0026] The base 1 includes two side baffles 10, and a baseplate 102 for fixing the two side baffles 101; the two side baffles 101 are fixedly provided with shafts at two ends of the lower pressing roller 4; and the two side baffles 101 are higher than the lower pressing roller 4 to form a U-shaped opening for the fire hose to pass through and to limit the fire hose; the swing arm 2 includes a left swing arm 201 and a right swing arm 202; bottom parts of the left swing arm 201 and the right swing arm 202 are respectively pivotally installed on outer sides of the baffles 101; shafts at two ends of the upper pressing roller 3 are respectively fixed to the left swing arm 201 and the right swing arm 202; and the left swing arm 201 and the right swing arm 202 are fixedly provided with two ends of the trigger rod 8 at an outward side of an upper end of the upper pressing roller 3, so that when the fire hose coupling passes through, the trigger piece 801 is triggered firstly, the clamping structure is released, and then the swing arm 2 rotates relative to the base 1 to enlarge the space between the upper pressing roller 3 and the lower pressing roller 4.

[0027] The clamping structure includes limiting hooks 204, hook accommodating grooves 106 and second springs 9; the trigger rod 8 is rotationally installed between the left swing arm 201 and the right swing arm 202, the limiting hooks 204 are fixedly installed at two ends of the trigger rod 8, and the trigger rod 8 rotates to drive the limiting hooks 204 to rotate; the hook accommodating grooves 106 are formed in matched positions on the base 1; when the limiting hooks 204 hook and buckle the hook accommodating grooves 106, the swing arm 2 is hooked on the base 1; and the trigger rod 8 rotates to drive the limiting hooks 204 to rotate away from the hook accommodating grooves 106, thus the swing arm 2 is driven to be released from the base 1, and the limiting hooks 204 are connected to the swing arm 2 by means of the second springs 9 and spring back to the hook accommodating grooves 106 by means of the second springs 9; and hooking and buckling parts of the limiting hooks 204 are sliding surfaces.

[0028] The hooking and buckling parts of the limiting hooks 204 are the sliding surfaces. According to the present invention, the hooking and buckling parts of the limiting hooks 204 are the sliding surfaces, which provides the possibility of stress action and movement direction for the hook accommodating grooves 106 and the limiting hooks 104 to automatically hook and buckle or automatically release.

[0029] The hook accommodating grooves 106 are provided with smooth cambered surfaces 1041 which are matched with the limiting hooks 204, and the limiting hooks 204 can move back and forth through the smooth cambered surfaces 1041; the smooth cambered surfaces 1041 are arranged on the outward sides of the upper ends of the hook accommodating grooves 106; and the limiting hooks 204 slide into or away from the smooth cambered surfaces 1041 to hook and buckle the hook accommodating grooves 106 or be separated from the hook accommodating grooves 106.

[0030] When winding the fire hose, if the thickness is suddenly increased due to folding of the fire hose and the like, the situation that the fire hose is folded can be handled through the smooth cambered surfaces 1041 and the sliding surfaces of the hooking and buckling parts of the limiting hooks, and water can be discharged by squeezing, thus blocking caused by the fixed space between the upper pressing roller and the lower pressing roller in winding of the fire hose can be avoided, and moreover, the problem of insufficient water discharge of the fire hose caused by unfixed space between the upper pressing roller 3 and the lower pressing roller 4 can be avoided.

[0031] The hook accommodating grooves 106 are provided with limiting hook guide bevels 105; the limiting hook guide bevels 105 are arranged at sliding front ends for sliding into the hook accommodating grooves 106; and with the limiting hook guide bevels 105, the limiting hooks 204 can resist the elastic force of the second springs 9 and gradually opens and slides downwards till clamping the hook accommodating grooves 106.

[0032] The hook accommodating grooves 106 are provided with adjusting components 11; the adjusting components 11 include second hook accommodating grooves 1101, and adjusting rods 1102; the second hook accommodating grooves 1101 are fixedly installed in upper ends of the adjusting rods 1102 and are designed to be attached to the hook accommodating grooves 106, grooved parts of the second hook accommodating grooves 1101 are close to grooved parts of the hook accommodating grooves 106, and the adjusting rods 1102 are installed on outer sides of the baffles 101 in a height-adjustable manner so that the height of the limiting hooks 204 hooking and buckling the second hook accommodating grooves 1101 can be adjusted, the hooking and buckling angles of the swing arm 2 and the baffles 101 are adjusted, and the space between the upper pressing roller 3 and the lower pressing roller 4 is adjusted to adapt to fire hoses of different thicknesses.

[0033] In addition, in the present invention, the second hook accommodating grooves 1101 are arranged in the adjusting components 11 according to the design, this arrangement position is in response to that the limiting hooks 204 are fixedly installed to the two ends of the trigger rod 8, so the limiting hooks 204 can be the limiting hooks with the same thickness, the hooking and buckling parts on the inner side are not needed to be arranged, and the limiting hooks 204 can directly hook and buckle the second hook accommodating grooves 1101, and thereby the machining difficulty of the limiting hooks is reduced, materials for the limiting hook 204 are reduced, and the production cost is reduced.

[0034] Adjusting rod adjusting holes 1103 are formed in lower ends of the adjusting rods 1102, adjusting bevels 1105 are arranged in the adjusting rod adjusting holes 1103, and the adjusting bevels 1105 are used for adjusting screws 1104 to lock at different height positions so as to adjust the height positions of the adjusting rods 1102; the adjusting rods 1102 are attached to outer walls of the baffles 101, the baffles 101 and the adjusting rods 1102 are respectively provided with dimensions, the baffles 101 are used as a main dimension, and the adjusting rods 1102 are used as a vernier so as to accurately adjust and control the height positions of the adjusting rods; each adjusting component 11 is further provided with a locking hook 13, one end of the locking hook 13 is rotationally installed on each baffle 101 in a lockable mode, while the other end is provided with a grooved part for locking each limiting hook 204, and the limiting hook 204 is locked from rotating, and thus the space between the upper pressing roller 3 and the lower pressing roller 4 can be fixed.

[0035] In the present invention, the base 1 is provided with a guide bevel 103 on the side departing from pivotal connection with the swing arm 2, and the guide bevel 103 is used for the fire hose coupling to be lapped and slide; and the guide bevel 103 is provided with a front roller 104 at the lowest position.

[0036] The front roller 104 is arranged, so the force for subsequently winding the fire hose can be reduced, the operation stability of the whole device is improved, and the service life of the whole device is prolonged; the front roller 104 and the guide bevel 103 are combined, so that the fire hose coupling cannot shake caused by winding during moving towards the upper pressing roller and the lower pressing roller, and the stability is ensured; the weighing of the lower pressing roller 4 is reduced, and the use stability of the water-discharge transmission structure according to the present invention is improved.

[0037] The first springs 5 are extension springs, are symmetrically arranged on the two sides of the baffles 101, and respectively connect the left swing arm 201 with the baffle 101 on one side, and connect the right swing arm 202 with the baffle 101 on the other side; the first springs 5 are torsional springs; and the left swing arm 201 and the baffle 101 on one side, and the right swing arm 202 and the baffle 101 on the other side spring back to original positions by the torsional springs installed at the pivotal connection parts.

[0038] Eccentric blocks 14 are arranged at the two ends of the rotating shaft of the lower pressing roller 4, the eccentric blocks are square, and the distance from an axis of the rotating shaft of the lower pressing roller 4 to all edges of the eccentric blocks 14 is different; and the eccentric blocks 14 are detachably installed on the base 1, and the eccentric blocks 14 are rotationally installed so as to adjust the installation position of the lower pressing roller 4 on the base 1. The eccentric blocks 14 are installed in different directions, and by adjusting the installation position of the lower pressing roller 4, the space between the upper pressing roller 3 and the lower pressing roller 4 can be adjusted, so that the same water-discharge transmission structure for winding the fire hose can be suitable for the fire hoses with different thicknesses, the application range of the same water-discharge transmission structure for winding the fire hose is expanded, and it is suitable for market popularization and application.

[0039] The above specific embodiments are used for explaining the present invention and are only preferred embodiments of the present invention, and not to limit the present invention. Within the scope of protection of the spirit and claims of the present invention, any modification, equivalent replacement, improvement, etc., made to the present invention falls within the scope of protection of the present invention.

Claims

1. An improved water-discharging transmission structure for winding a fire hose, comprising a base, and a swinging arm having one side pivotally connected onto the base, wherein the base and the swing arm are elastically connected on the pivotal connection side by means of first springs; the base is provided with a lower pressing roller, and the swing arm is provided with an upper pressing roller; the swing arm elastically springs back to an original position by means of the first springs, and the swing arm and the base are 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 arm and the base, and can automatically and repeatedly clamp the swing arm and the base; the swing arm is provided with a trigger rod on an outer side of the upper pressing roller; a trigger piece is arranged on the trigger rod; an inner side of the trigger piece is fixedly installed to the trigger rod, while an outer side is structured as a smooth cambered surface through which a fire hose coupling can be in contact from different angles and pushes to realize rotation; the fire hose coupling pushes the trigger piece to rotate, the trigger piece rotates to drive the trigger rod to rotate so as to release the clamping structure and to push the swing arm to rotate, then the clamping structure is opened, and the swing arm rotates to open relative opening and an opening of the base, thus the space between the upper pressing roller and the lower pressing roller is enlarged for the fire hose coupling to pass; and after the fire hose coupling passes, the first springs spring back to pull back the swing arm, and the clamping structure automatically clamps the swing arm and the base, thus the upper pressing roller and the lower pressing roller squeeze to discharge water from the fire hose.

2. The improved water-discharging transmission structure for winding the fire hose according to claim 1, wherein the base comprises two side baffles, and a baseplate for fixing the two side baffles; the two side baffles are fixedly provided with shafts at two ends of the lower pressing roller; and the two side baffles are higher than the lower pressing roller to form a U-shaped opening for the fire hose to pass through and to limit the fire hose; the swing arm comprises a left swing arm and a right swing arm; bottom parts of the left swing arm and the right swing arm are respectively pivotally installed on outer sides of the baffles; shafts at two ends of the upper pressing roller are respectively fixed to the left swing arm and the right swing arm; and the left swing arm and the right swing arm are fixedly provided with two ends of the trigger rod at an outward side of an upper end of the upper pressing roller, so that when the fire hose coupling passes through, the trigger piece is triggered firstly, the clamping structure is released, and then the swing arm rotates relative to the base to enlarge the space between the upper pressing roller and the lower pressing roller.

3. The improved water-discharging transmission structure for winding the fire hose according to claim 2, wherein the clamping structure comprises limiting hooks, hook accommodating grooves and second springs; the trigger rod is rotationally installed between the left swing arm and the right swing arm, the limiting hooks are fixedly installed at two ends of the trigger rod, and the trigger rod rotates to drive the limiting hooks to rotate; the hook accommodating grooves are formed in matched positions on the base; when the limiting hooks hook and buckle the hook accommodating grooves, the swing arm is hooked on the base; and the trigger rod rotates to drive the limiting hooks to rotate away from the hook accommodating grooves, thus the swing arm is driven to be released from the base, and the limiting hooks are connected to the swing arm by means of the second springs and spring back to the hook accommodating grooves by means of the second springs; and hooking and buckling parts of the limiting hooks are sliding surfaces.

4. The improved water-discharging transmission structure for winding the fire hose according to claim 3, wherein the hook accommodating grooves are provided with smooth cambered surfaces which are matched with the limiting hooks, and the limiting hooks can move back and forth through the smooth cambered surfaces; the smooth cambered surfaces are arranged on the outward sides of the upper ends of the hook accommodating grooves; and the limiting hooks slide into or away from the smooth cambered surfaces to hook and buckle the hook accommodating grooves or be separated from the hook accommodating grooves.

5. The improved water-discharging transmission structure for winding the fire hose according to claim 3, wherein the hook accommodating grooves are provided with limiting hook guide bevels; the limiting hook guide bevels are arranged at the sliding front ends for sliding into the hook accommodating grooves; the limiting hook guide bevels provide the limiting hooks to resist the elastic force of the second springs, and the limiting hooks are gradually opened and slide downwards till the limiting hooks are clamped in the hook accommodating grooves.

6. The improved water-discharging transmission structure for winding the fire hose according to claim 3, wherein the hook accommodating grooves are provided with adjusting components; the adjusting components comprise second hook accommodating grooves, and adjusting rods; the second hook accommodating grooves are fixedly installed in upper ends of the adjusting rods and are designed to be attached to the hook accommodating grooves, grooved parts of the second hook accommodating grooves are close to grooved parts of the hook accommodating grooves, and the adjusting rods are installed on outer sides of the baffles in a height-adjustable manner so that the height of the limiting hooks hooking and buckling the second hook accommodating grooves can be adjusted, the hooking and buckling angles of the swing arm and the baffles are adjusted, and the space between the upper pressing roller and the lower pressing roller is adjusted to adapt to fire hoses of different thicknesses.

7. The improved water-discharging transmission structure for winding the fire hose according to claim 6, wherein adjusting rod adjusting holes are formed in lower ends of the adjusting rods, adjusting bevels are arranged in the adjusting rod adjusting holes, and the adjusting bevels are used for adjusting screws to lock at different height positions so as to adjust the height positions of the adjusting rods; or, the adjusting rods are attached to outer walls of the baffles, the baffles and the adjusting rods are respectively provided with dimensions, the baffles are used as a main dimension, and the adjusting rods are used as a vernier so as to accurately adjust and control the height positions of the adjusting rods; or, each adjusting component is further provided with a locking hook, one end of the locking hook is rotationally installed on each baffle in a lockable mode, while the other end is provided with a grooved part for locking each limiting hook, and the limiting hook is locked from rotating, and thus the space between the upper pressing roller and the lower pressing roller can be fixed.

8. The improved water-discharging transmission structure for winding the fire hose according to claim 3, wherein the base is provided with a guide bevel on the side departing from pivotal connection with the swing arm, and the guide bevel is used for the fire hose coupling to be lapped and slide; and the guide bevel is provided with a front roller at the lowest position.

9. The improved water-discharging transmission structure for winding the fire hose according to claim 2, wherein the first springs are extension springs, are symmetrically arranged on the two sides of the baffles, and respectively connect the left swing arm with the baffle on one side, and connect the right swing arm with the baffle on the other side; or, the first springs are torsional springs; and the left swing arm and the baffle on one side, and the right swing arm and the baffle on the other side spring back to original positions by the torsional springs installed at the pivotal connection parts.

10. The improved water-discharging transmission structure for winding the fire hose according to claim 1, wherein eccentric blocks are arranged at two ends of the rotating shaft of the lower pressing roller, the eccentric blocks are square, and the distance from an axis of the rotating shaft of the lower pressing roller to all edges of the eccentric blocks is different; and the eccentric blocks are detachably installed on the base, and the eccentric blocks are rotationally installed so that the installation position of the lower pressing roller on the base can be adjusted.

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