Fire hose traction device and traction method thereof

Abstract

The present invention discloses a fire hose traction device, comprising a traction trolley, a locking mechanism and a traction mechanism. The traction trolley comprises a working plane, a motor and a roller. The locking mechanism comprises a bending spring sheet, a base, a clamping hoop, a hydraulic cylinder one, a hydraulic cylinder two and a hydraulic cylinder three. The clamping hoop is two semicircular plates movably mounted on the base. Telescopic rods of the hydraulic cylinder two and the hydraulic cylinder three are upwardly connected to the maximum arc of the two semicircular plates. The hydraulic cylinder one is connected to the side of the base. The bending spring sheet comprises a horizontally arranged hollow cylinder with openings at both ends. The end of the cylinder has four places turned outward to form a pressing sheet. The connection between the cylinder and the pressing sheet forms a U-shaped ring. The traction mechanism comprises a hydraulic cylinder four and a traction frame. The traction frame passes through the upper and lower U-shaped rings. The present invention first clamps the bag mouth and uses the traction trolley to directly cover the outer layer onto the inner lining. The structure is simple, easy to use, and work efficiency and product quality are improved.

Description

Technical Field

[0001] The invention belongs to the technical field of fire hose production equipment, and in particular relates to a fire hose traction device and a traction method thereof. Background Art

[0002] A fire hose is a hose used to transport flame-retardant liquids such as high-pressure water or foam. Its main function is to divert water. General fire hoses are lined with rubber and have a linen braided layer on the outer surface. 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 connected to a nozzle to increase the liquid injection pressure. In the production process, the inner lining and the outer layer are produced separately on different equipment. After the outer wall of the inner lining is coated with glue, the outer layer is put on the inner lining, and then high-temperature steam is injected into the interior to expand the inner lining and tightly bond with the outer layer. At present, the casing work is mainly completed by a traction rope, which pulls the inner lining from the outer layer. The structure is complicated and the inner lining is easily broken, affecting the product quality. Therefore, an improved technology is urgently needed to solve this problem existing in the prior art. Summary of the invention

[0003] To solve the above problems, the present invention discloses a fire hose traction device and a traction method thereof, which clamps the bag opening and uses a traction trolley to directly put the outer layer onto the inner lining. It has a simple structure, is easy to use, and improves work efficiency and product quality.

[0004] To achieve the above object, the technical solution of the present invention is as follows:

[0005] A fire hose traction device includes a traction trolley, a locking mechanism, and a traction mechanism. The traction trolley includes a working plane, a motor, and rollers. The rollers are arranged below the working plane, and the motor is arranged above the working plane. The motor is connected to the rollers. The locking mechanism includes a bent reed, a base, a clamping hoop, a first hydraulic cylinder, a second hydraulic cylinder, and a third hydraulic cylinder. The clamping hoop is composed of two semi-circular plates movably installed on the base. The second hydraulic cylinder and the third hydraulic cylinder are installed inside the base. The telescopic rods of the second hydraulic cylinder and the third hydraulic cylinder are upwardly connected to the maximum arc positions of the two semi-circular plates. The base is arranged above the working plane. The first hydraulic cylinder is connected to the side of the base. The bent reed includes a hollow cylinder with two open ends horizontally arranged. There are four outward flips at the end of the cylinder to form pressing pieces. Two of the four pressing pieces are arranged above the end of the cylinder, and the connection line of these two is higher than the side of the cylinder. The other two are arranged below the end of the cylinder, and the connection line of these two is lower than the side of the cylinder. A U-shaped ring is formed at the connection of the cylinder and the pressing piece. A convex block and a groove are provided on the opposite surfaces of the first ends of the cylinder and the pressing piece. A stop block is provided on the outer side of the pressing piece. The two semi-circular plates surround the outer side of the pressing piece. The traction mechanism includes a fourth hydraulic cylinder and a traction frame. The fourth hydraulic cylinder is arranged on the working plane, and the telescopic rod of the fourth hydraulic cylinder is connected to the traction frame. The traction frame passes through the upper and lower U-shaped rings. The first hydraulic cylinder and the fourth hydraulic cylinder are respectively arranged on both sides of the base.

[0006] As an improvement of the present invention, the base and the semi-circular plate are connected by a pin.

[0007] As an improvement of the present invention, the pressing piece is a spring piece.

[0008] As an improvement of the present invention, a track is provided on the working plane, and the base is arranged on the track through a slider.

[0009] As an improvement of the present invention, the traction frame is a horizontally arranged "U"-shaped structure.

[0010] As an improvement of the present invention, a reinforcing rod is provided inside the traction frame.

[0011] A traction method for a fire hose traction device includes the following steps:

[0012] (1) The bent reed is sleeved on the horizontal pipe, and the inner liner head is sleeved on the first end of the bent reed. The traction trolley moves to the lower part of the inner liner head under the action of the motor and the rollers.

[0013] (2) The second hydraulic cylinder and the third hydraulic cylinder are started, and the telescopic rods are jacked upward to drive the two semi-circular plates to surround the outer side of the pressing piece.

[0014] (3) The first hydraulic cylinder is started to drive the base to move towards the inner liner head, pressing the four pressing pieces towards the inner liner head, and finally pressing the inner liner head.

[0015] (4) Hydraulic cylinder 4 is activated to pass the traction frame through the upper and lower U-shaped rings;

[0016] (5) The traction trolley starts and moves away from the liner head, driving the liner sleeve on the horizontal pipe;

[0017] (6) After the lining traction is completed, the traction frame withdraws the upper and lower U-shaped rings, loosens the two semicircular plates, and removes the bent spring;

[0018] (7) Put the bent spring sheet on the horizontal tube, put the outer head on the head end of the bent spring sheet, and move the traction trolley to the bottom of the outer head under the action of the motor and the roller. Repeat steps (2) to (6) to complete the traction process.

[0019] The beneficial effects of the present invention are:

[0020] The fire hose traction device and traction method described in the present invention clamp the bag opening and use a traction trolley to directly cover the outer layer onto the inner lining. The device has a simple structure and is easy to use, thereby improving work efficiency and product quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural schematic diagram of the present invention.

[0022] Figure 2 It is a schematic diagram of the working state of the present invention.

[0023] Figure 3 It is a schematic diagram of the bent spring leaf described in the present invention.

[0024] Figure 4 This is a schematic diagram of the connection of the clamping hoop described in the present invention.

[0025] Figure 5 It is a schematic diagram of the traction mechanism described in the present invention.

[0026] Figure 6 This is a top view of the traction trolley described in the present invention.

[0027] List of reference numerals:

[0028] 1. Traction trolley, 2. Locking mechanism, 3. Traction mechanism, 4. Working plane, 5. Electricity, 6. Roller, 7. Bending spring, 8. Base, 9. Clamping hoop, 10. Hydraulic cylinder one, 11. Hydraulic cylinder two, 12. Hydraulic cylinder three, 13. Semicircular plate, 14. Hollow cylinder, 15. Pressing piece, 16. U-shaped ring, 17. Bump, 18. Groove, 19. Stopper, 20. Hydraulic cylinder four, 21. Traction frame, 22. Axle pin, 23. Track, 24. Slider, 25. Reinforcement rod, 26. Lining, 27. Horizontal tube. DETAILED DESCRIPTION

[0029] The present invention is further explained below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the following specific embodiments are only used to illustrate the present invention and are not used to limit the scope of the present invention. It should be noted that the words "front", "rear", "left", "right", "upper" and "lower" used in the following description refer to directions in the accompanying drawings, and the words "inner" and "outer" refer to directions toward or away from the geometric center of a specific component, respectively.

[0030] As shown in the figure, a fire hose traction device described in the present invention includes a traction trolley 1, a locking mechanism 2, and a traction mechanism 3. The traction trolley 1 includes a working plane 4, a motor 5 and a roller 6. The roller 6 is arranged below the working plane 4, the motor 5 is arranged above the working plane, and the motor 5 is connected to the roller 6. The locking mechanism includes a bending spring 7, a base 8, a clamping hoop 9, a hydraulic cylinder 10, a hydraulic cylinder 2 11, and a hydraulic cylinder 3 12. The clamping hoop 9 is two semicircular plates 13 movably installed on the base 8. The hydraulic cylinder 2 11 and the hydraulic cylinder 3 12 are installed in the base 8. The telescopic rods of the hydraulic cylinder 2 11 and the hydraulic cylinder 3 12 are connected upward to the maximum arc of the two semicircular plates 13. The base 8 is arranged above the working plane 4, the hydraulic cylinder 10 is connected to the side of the base 8, and the bending spring 7 includes two horizontally arranged ends An open hollow cylinder 14 has four ends that are turned outward to form a pressing plate 15. Two of the four pressing plates 15 are arranged above the end of the cylinder, and the line connecting the two plates is higher than the side of the cylinder. The other two plates are arranged below the end of the cylinder 14, and the line connecting the two plates is lower than the side of the cylinder 14. A U-shaped ring 16 is formed at the connection between the cylinder 14 and the pressing plate 15. A protrusion 17 and a groove 18 are provided on the opposite surfaces of the head ends of the cylinder 14 and the pressing plate 15. A stopper 19 is provided on the outside of the pressing plate 15. The two semicircular plates are enclosed on the outside of the pressing plate 15. The traction mechanism includes a hydraulic cylinder four 20 and a traction frame 21. The hydraulic cylinder four 20 is arranged on the working plane 4. The telescopic rod of the hydraulic cylinder four 20 is connected to the traction frame 21. The traction frame 21 passes through the upper and lower U-shaped rings 16. The hydraulic cylinder one 10 and the hydraulic cylinder four 20 are respectively arranged on both sides of the base 8.

[0031] The fire hose traction device of the present invention works in two steps:

[0032] 1. Lining

[0033] (1) First prepare a long horizontal tube 27, put the bent spring on the head end of the horizontal tube 27, put the head of the liner 26 on the head end of the bent spring (at the groove 18), and move the traction trolley 1 to the bottom of the head of the liner 26 under the action of the motor 5 and the roller 6.

[0034] (2) Hydraulic cylinder 2 11 and hydraulic cylinder 3 12 are started, and the telescopic rod is pushed upward, driving the two semicircular plates 13 to enclose the outside of the pressing plate 15.

[0035] (3) The hydraulic cylinder 10 is started, driving the base 8 to move toward the head of the liner 26, pressing the four pressing pieces 15 (in the vertical direction) toward the head of the liner 26, and finally pressing the head of the liner 26. The protrusion 17 and the groove 18 cooperate to lock the head of the liner 26. The two semicircular plates 13 are blocked by the block 19. At this time, the head of the liner 26 is tightly locked;

[0036] (4) The hydraulic cylinder 20 is started to pass the traction frame 21 through the upper and lower U-shaped rings 16;

[0037] (5) The traction trolley starts and moves away from the head of the liner. The traction frame 21 pulls the bent spring 7, and the bent spring 7 drives the liner 26 to move toward the tail end of the horizontal tube 27 until the liner is completely covered on the horizontal tube 27.

[0038] (6) After the traction of the liner 26 is completed, the traction frame 21 withdraws from the upper and lower U-shaped rings 16, loosens the two semicircular plates 13, and removes the bent spring 7;

[0039] 2. Outer layer

[0040] The bent spring sheet 7 is put on the head end of the lining, and the head of the outer layer is put on the head end of the bent spring sheet (at the groove 18). The traction trolley is moved to the bottom of the outer layer head (below the head end of the lining) under the action of the motor and the roller, and the above steps (2) to (6) are repeated to cover the outer layer on the surface of the lining to complete the traction process.

[0041] If it is a three-layer water hose, there are linings inside and outside. After the outer layer is put on (after hot pressing), a layer of rubber lining can be put on to complete it. This simplifies the process, improves work efficiency, and the lining will not be damaged, which can also improve product quality.

[0042] The fire hose traction device described in the present invention uses a clamping hoop 9 to compress a spring pressure plate 15 to clamp the inner liner (or outer layer) bag opening, and uses a traction trolley 1 to directly put the outer layer onto the inner liner. It has a simple structure, is easy to use, and improves work efficiency and product quality.

[0043] The bent spring leaf 7 of the present invention is a key component. Figure 3 As shown, the outward-turned pressing piece 15 can clamp the inner liner bag mouth, and the U-shaped ring 16 at the outward-turned position is the fulcrum for the traction mechanism. The pressing piece 15 is a spring sheet. When the clamping hoop 9 (two semicircular plates 13) is loosened, the pressing piece will pop outward, and the protrusion 17 will separate from the groove 18, so that the inner liner bag mouth can be easily loosened. The positions of the other four U-shaped rings 16 are crucial. Two of the four pressing pieces 15 are arranged above the end of the cylinder, and the connecting line of the two pieces is higher than the side of the cylinder, that is, the traction frame 21 can pass through the two U-shaped rings above without obstacles, such as Figure 5As shown, similarly, the other two pressing plates 15 are arranged below the end of the cylinder 14. The connection line of these two plates is lower than the side surface of the cylinder 14. The traction frame 21 can also pass through the two U-shaped rings below without obstruction (the traction frame 21 is a "凵"-shaped structure set horizontally and obliquely, and the two cross bars pass through the two U-shaped rings above and the two U-shaped rings below respectively). With a hydraulic cylinder, the operation can be easily completed. The structure is simple, the cost is low, it is convenient to use, and the working efficiency is high.

[0044] The opening method of the clamping hoop 9 described in the present invention is very novel. The clamping hoop 9 is composed of two semi-circular plates 13. The two semi-circular plates 13 can be opened or closed under the action of a hydraulic cylinder. The hydraulic cylinder is arranged in the base below, without occupying space. The two semi-circular plates 13 described in the present invention are slightly smaller than the diameter of the circle formed by the four pressing plates. When the two semi-circular plates 13 move towards the inner liner bag mouth, they will press the pressing plates 15 towards the axis direction, and finally clamp the inner liner bag mouth. The whole structure is simple and convenient, and is convenient for maintenance or replacement.

[0045] The moving power of the present invention comes from the motor 5. The four hydraulic cylinders perform their respective functions. The hydraulic cylinder 10 presses the inner liner bag mouth (lateral movement), and the hydraulic cylinders 11 and 12 open or close the two semi-circular plates 13 (vertical movement). The hydraulic cylinder 20 passes the traction frame 21 through the upper and lower U-shaped rings 16 (longitudinal movement). As long as the four hydraulic cylinders are in place, starting the motor 5 can completely cover the inner liner on the horizontal pipe 27 (or the outer cover completely covers the surface of the inner liner).

[0046] In the present invention, the base 8 and the semi-circular plates 13 are connected by a shaft pin 22. The lower ends of the two semi-circular plates 13 open or close around the shaft pin 22, as Figure 4 shown.

[0047] In the present invention, a track 23 is provided on the working plane 4. The base is arranged on the track through a slider 24. When the hydraulic cylinder 10 pulls the base 8, the force is smooth, as Figure 4 and 6 shown.

[0048] In the present invention, a reinforcing rod 25 is provided inside the traction frame 21 to increase the strength and extend the service life.

[0049] The technical means disclosed in the solution of the present invention are not limited to the technical means disclosed in the above embodiments, but also include technical solutions composed of any combination of the above technical features.

Claims

1. A fire hose traction device, characterized in that: It includes a traction trolley, a locking mechanism, and a traction mechanism. The traction trolley includes a working plane, a motor, and rollers. The rollers are arranged below the working plane, and the motor is arranged above the working plane. The motor is connected to the rollers. The locking mechanism includes a bent reed, a base, a clamping hoop, a first hydraulic cylinder, a second hydraulic cylinder, and a third hydraulic cylinder. The clamping hoop consists of two semi-circular plates movably installed on the base. The base and the semi-circular plates are connected by a pin. The second hydraulic cylinder and the third hydraulic cylinder are installed in the base. The telescopic rods of the second hydraulic cylinder and the third hydraulic cylinder are connected upward to the maximum arc positions of the two semi-circular plates. There is a track on the working plane. The base is arranged on the track through a slider. The first hydraulic cylinder is connected to the side of the base. The bent reed includes a hollow cylinder with open ends horizontally arranged. There are four outward flips at the end of the cylinder to form pressing pieces. The pressing pieces are spring pieces. Two of the four pressing pieces are arranged above the end of the cylinder, and the connection line of these two is higher than the side of the cylinder. The other two are arranged below the end of the cylinder, and the connection line of these two is lower than the side of the cylinder. A U-shaped ring is formed at the connection of the cylinder and the pressing piece. There are bumps and grooves on the opposite surfaces of the first ends of the cylinder and the pressing piece. A stop block is arranged on the outer side of the pressing piece. The two semi-circular plates surround the outer side of the pressing piece. The traction mechanism includes a fourth hydraulic cylinder and a traction frame. The fourth hydraulic cylinder is arranged on the working plane. The telescopic rod of the fourth hydraulic cylinder is connected to the traction frame. The traction frame passes through the upper and lower U-shaped rings. The first hydraulic cylinder and the fourth hydraulic cylinder are respectively arranged on both sides of the base.

2. A fire hose traction device according to claim 1, characterized in that: The traction frame is a horizontally arranged "U"-shaped structure.

3. A fire hose traction device according to claim 1, characterized in that: Reinforcing bars are arranged inside the traction frame.

4. A traction method for a fire hose traction device according to claim 1, characterized in that: It includes the following steps: (1) Put the bent reed on the horizontal pipe, and put the inner liner head on the first end of the bent reed. The traction trolley moves under the action of the motor and the rollers to the position below the inner liner head. (2) Start the second hydraulic cylinder and the third hydraulic cylinder. The telescopic rods jack up upward, driving the two semi-circular plates to surround the outer side of the pressing piece. (3) Start the first hydraulic cylinder, drive the base to move towards the inner liner head, press the four pressing pieces to approach the inner liner head, and finally press the inner liner head. (4) Start the fourth hydraulic cylinder, and pass the traction frame through the upper and lower U-shaped rings. (5) Start the traction trolley, move away from the inner liner head, and drive the inner liner to be sleeved on the horizontal pipe. (6) After the inner liner traction is completed, the traction frame withdraws from the upper and lower U-shaped rings, loosens the two semi-circular plates, and removes the bent reed. (7) Put the bent reed on the horizontal pipe, and put the outer layer head on the first end of the bent reed. The traction trolley moves under the action of the motor and the rollers to the position below the outer layer head, and repeat steps (2)-(6) to complete the traction process.

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