Automatic retraction tube winder structure with two-stage reduction transmission assembly

Abstract

The utility model discloses an automatic retraction pipe winder structure with two-stage speed reduction transmission assembly relates to pipe winder technical field, and the utility model discloses a support frame is personally experienced sth, and the upper portion fixed mounting of support frame has the winding roller, and the middle portion rotating installation of winding roller has the rotating shaft, and one side of winding roller is equipped with the speed reducer mechanism, is positioned for the rotation of rotating shaft, and the speed reducer mechanism includes: limiting component includes the driving gear fixed mounting at the both ends of rotating shaft, when the pipe material is retracted under the winding spring effect, will drive rotating shaft and the driving gear rotation of both ends, and then drive two driven gears high -speed rotation with the meshing, utilize its 4:1 reduction ratio formation first -stage speed reduction, simultaneously, the two -way cylinder action promotes the rotation axis and the friction disc and presses into the friction groove of winding roller, and the sliding friction force of generating between two constitutes second -stage speed reduction brake, and through two -stage speed reduction mutual cooperation makes pipe material in the retraction end section can be stable, slowly reset.

Description

Technical Field

[0001] This utility model relates to the field of hose reel technology, specifically to an automatic retraction hose reel structure with a two-stage reduction transmission assembly. Background Technology

[0002] Automatic retractable hose reels are convenient tools for storing various types of pipes (such as high-pressure water pipes, gas pipes, cables, etc.). With their automatic retraction function, they can effectively reduce the problem of messy pipe stacking, improve the cleanliness of the work site and space utilization, and have been widely used in many fields such as automobile repair, construction, household cleaning, and industrial production.

[0003] Referring to the patent document: Patent Publication No. CN220334386U, Patent Publication Date 2024-01-24, an automatic telescopic tube reel is disclosed, comprising: a base, two housings mounted on the upper end of the base, a receiving roller rotatably connected to the side walls of the two housings, a first limiting plate and a second limiting plate rotatably connected to the inner walls of the two housings respectively, a first connecting rod and a second connecting rod respectively mounted on the inner walls of the two housings, a first positioning block and a second positioning block slidably connected to the outside of the first connecting rod and the second connecting rod, support rods mounted on the side walls of the two housings, a first crossbar and a second crossbar spaced apart on the side walls of the two support rods, a threaded rod rotatably connected to the middle of the first crossbar, a sliding rod mounted to the middle of the second crossbar, and a threaded block threadedly connected to the outside of the threaded rod. Through the above structure, the receiving roller can be limited during rotation, preventing the receiving roller from rotating back during tube receiving and unloading, thus avoiding affecting the use effect.

[0004] Based on the search of patent numbers and the shortcomings of existing technologies, the following was found:

[0005] Existing automatic retractable hose reels typically use a coil spring as their power core. The spring stores elastic potential energy during the hose extension process, releasing it upon release to drive a rotating reel, thus achieving automatic hose retraction. However, the initial driving force of the spring is large and the release is concentrated, causing the reel to rotate at high speed without effective deceleration. This results in rapid hose retraction, which can easily cause the hose to collide with the hose reel's housing and end joints. Long-term use can lead to hose breakage and loosening / detachment of joints. It also accelerates wear on internal components such as bearings and gears, significantly shortening the overall lifespan of the equipment. Furthermore, the high-speed retraction can cause the hose to swing and become entangled, posing safety hazards such as scratches and impacts to workers. It also leads to disorganized hose storage, negating the convenience of the automatic retraction function.

[0006] Therefore, this utility model provides an automatic retractable hose reel structure with a two-stage reduction transmission assembly. Utility Model Content

[0007] To address the problem that existing automatic retractable hose reels suffer from excessively fast hose retraction speeds due to the large and concentrated initial driving force when the coil spring releases its elastic potential energy, which can easily lead to pipe impact and cracking, loose joints, component wear, and personal safety hazards, the purpose of this utility model is to provide an automatic retractable hose reel structure with a two-stage reduction transmission assembly.

[0008] To achieve the above objectives, this utility model provides the following technical solution: an automatic retractable hose reel structure with a two-stage reduction transmission assembly, comprising a support frame, a winding roller fixedly mounted on the upper part of the support frame, a rotating shaft rotatably mounted on the middle part of the winding roller, and a reduction mechanism provided on one side of the winding roller for limiting the rotation of the rotating shaft. The reduction mechanism includes:

[0009] The limiting assembly includes a drive gear fixedly installed at both ends of the rotating shaft, and two symmetrically distributed driven gears rotatably installed on one side of the support frame. The driven gears mesh with the drive gears. A rotating shaft is slidably provided through the middle of one side of each of the two driven gears. A friction disc is fixedly installed at one end of each of the two rotating shafts. A drive assembly is provided on one side of each of the two rotating shafts.

[0010] An adjustment component, located on the upper part of the support frame, is used to adjust the extension direction of the wound tube.

[0011] Preferably, the adjustment assembly includes an adjustment frame mounted on the upper part of the support frame via a damping bearing, and a limit frame is bolted to one side of the upper part of the adjustment frame.

[0012] Preferably, the drive assembly includes a fixed frame fixedly installed on one side of the support frame, a bidirectional cylinder fixedly installed in the middle of one side of the fixed frame, a connecting plate fixedly installed on both drive ends of the bidirectional cylinder, and one end of each of the two rotating shafts rotatably installed on one side of the connecting plate.

[0013] Preferably, two symmetrically distributed limiting blocks are fixedly installed on the outer sides of both rotating shafts, and the limiting blocks are slidably inserted and locked in the middle of the driven gear.

[0014] Preferably, friction grooves are provided on both sides of the winding roller, and the friction disc and the friction grooves are used in conjunction with each other.

[0015] Preferably, a coil spring is provided in the middle of the rotating shaft to provide retraction power for the wound tube, and a fixing groove is provided on the outer side of the rotating shaft to fix the end of the tube at the initial winding end.

[0016] Beneficial effects

[0017] This utility model provides an automatic retractable hose reel structure with a two-stage reduction transmission assembly. Compared with the prior art, it has the following advantages:

[0018] 1. When the pipe retracts under the action of the coil spring, it will drive the rotating shaft and the driving gears at both ends to rotate, thereby driving the two driven gears meshing with it to rotate at high speed. The first stage of deceleration is formed by the 4:1 reduction ratio. At the same time, the bidirectional cylinder pushes the rotating shaft and friction disc into the friction groove of the winding roller. The sliding friction generated between the two constitutes the second stage of deceleration and braking. The two stages of deceleration work together to enable the pipe to return to its original position smoothly and slowly at the end of the retraction, effectively eliminating the safety hazards such as pipe swinging, entanglement, and violent impact on the support frame caused by excessive retraction kinetic energy.

[0019] 2. This application uses a damping bearing to mount the adjustment frame on the support frame. With the help of the damping torque of the bearing itself, the operator can easily and manually rotate the adjustment frame to any horizontal angle and maintain it stably, thereby flexibly changing the extension guide direction of the pipe and thus meeting the different needs for the pipe outlet position in different working environments. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of this utility model.

[0021] Figure 2 This is a cross-sectional structural diagram of the present invention.

[0022] Figure 3 This is a schematic diagram of the limiting component structure of this utility model.

[0023] Figure 4 This is a schematic diagram of the adjustment component structure of this utility model.

[0024] In the diagram: 1. Support frame; 2. Reduction mechanism; 21. Limiting component; 211. Winding roller; 2111. Rotating shaft; 2112. Fixing groove; 212. Driving gear; 213. Driven gear; 214. Double-acting cylinder; 2141. Fixing frame; 215. Connecting plate; 216. Rotating shaft; 2161. Limiting block; 217. Friction disc; 2171. Friction groove; 22. Adjusting component; 221. Adjusting frame; 222. Limiting frame. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] Please see Figure 1-4 This utility model provides a technical solution: an automatic retractable hose reel structure with a two-stage reduction transmission assembly, including a support frame 1. The support frame 1 is forged from Q235 carbon steel and has an overall U-shaped structure with the opening facing downwards. The thickness of its two side uprights is 8mm, and the bottom horizontal plate has four 12mm diameter mounting holes for fixing. A winding roller 211 is fixedly installed on the upper part of the support frame 1. The winding roller 211 is fixed to the support frame 1 by bolt assembly. The winding roller 211 has an overall I-shaped structure. A rotating shaft 2111 is rotatably installed in the middle of the winding roller 211. The rotating shaft 2111 is rotatably installed in the middle of the winding roller 211 through a bearing and is sleeved on the central cylindrical part of the winding roller 211. A reduction mechanism 2 is provided on one side of the winding roller 211 to limit the rotation of the rotating shaft 2111. The reduction mechanism 2 includes:

[0027] The limiting assembly 21 includes a drive gear 212 fixedly mounted at both ends of the rotating shaft 2111. The drive gear 212 is fixed to the rotating shaft 2111 by a key connection. It has a module of 2.5, 18 teeth, and a tooth surface hardness of HRC58-62. Two symmetrically distributed driven gears 213 are rotatably mounted on one side of the support frame 1. The center distance between the driven gears 213 and the drive gear 212 is 80mm. Their module is the same as that of the drive gear 212, and they have 72 teeth. They form the first stage of reduction (reduction ratio 4:1) through tooth surface meshing. The driven gears 213 and the drive gears 212 are meshed and connected to each other. The middle part of one side of the two driven gears 213 Both shafts 216 are slidably connected and have rotating shafts 216. Friction discs 217 are fixedly installed at one end of each shaft 216. The friction discs 217 are made of asbestos-based friction material, with a diameter of 80mm and a thickness of 15mm. A drive assembly is provided on one side of each shaft 216. When the coil spring acts to rotate the rotating shaft 2111 to retract the pipe, it can drive the drive gear 212 to rotate and simultaneously drive the meshing driven gear 213 to rotate. This causes the friction discs 217 to rotate through the limit block 2161 and the rotating shaft 216. The friction discs 217 are controlled by the bidirectional cylinder 214 to engage with the friction grooves 2171 on the winding roller 211, thereby reducing speed through friction.

[0028] Adjustment component 22 is located on the upper part of support frame 1 and is used to adjust the extension direction of the wound tube.

[0029] The adjustment assembly 22 includes an adjustment frame 221 mounted on the upper part of the support frame 1 via a damping bearing. The damping bearing is a GE20ES model. The damping torque of the damping bearing can be finely adjusted by adjusting the end cap bolts to ensure that the adjustment frame 221 can be positioned at any angle. A limit frame 222 is bolted to one side of the upper part of the adjustment frame 221. The limit frame 222 has a U-shaped structure and is fitted with a polyurethane wear-resistant bushing. The inner diameter of the bushing can be replaced according to the pipe specifications (fitting range φ8-φ32mm) to avoid direct contact between the pipe and metal, which would cause wear.

[0030] The drive assembly includes a fixed frame 2141 fixedly mounted on one side of the support frame 1. A bidirectional cylinder 214 is fixedly mounted in the middle of one side of the fixed frame 2141. The bidirectional cylinder 214 is fixed to one side of the fixed frame 2141 by a flange. The model of the bidirectional cylinder 214 is CDA2B50-100. A connecting plate 215 is fixedly mounted on both drive ends of the bidirectional cylinder 214. One end of each of the two rotating shafts 216 is rotatably mounted on one side of the connecting plate 215. One end of each of the two rotating shafts 216 is rotatably connected to the connecting plate 215 by a thrust ball bearing (model 51105) to ensure that the rotating shafts 216 do not cause the connecting plate 215 to rotate when they rotate.

[0031] Two symmetrically distributed limiting blocks 2161 are fixedly installed on the outer sides of the two rotating shafts 216. The limiting blocks 2161 are slidably inserted and locked in the middle of the driven gear 213. The height of the limiting block 2161 is 5mm and the width is 15mm. The cooperation between the limiting block 2161 and the spline hole in the middle of the driven gear 213 enables the circumferential positioning between the rotating shaft 216 and the driven gear 213, ensuring that the driven gear 213 can drive the rotating shaft 216 to rotate synchronously, while allowing the rotating shaft 216 to slide axially.

[0032] Friction grooves 2171 are provided on both sides of the winding roller 211. The friction disc 217 and the friction groove 2171 work together. When the friction disc 217 is embedded in the friction groove 2171, the friction force forms a braking resistance on the winding roller 211, which constitutes the second stage of deceleration.

[0033] A coil spring is provided in the middle of the rotating shaft 2111. The rotating shaft 2111 has an axial mounting hole with a coil spring inside to provide retraction power for the wound tube. A fixing groove 2112 is provided on the outer side of the rotating shaft 2111 to fix the end of the initial winding of the tube.

[0034] Furthermore, any content not described in detail in this specification is existing technology known to those skilled in the art.

[0035] During operation, when the pipe is pulled out for use, the pipe passes through the middle of the limiting frame 222 and is pulled outward. The operator overcomes the preload of the coil spring and pulls the pipe outward. During this process, the drive assembly (double-acting cylinder 214) is in a retracted state, so that the friction disc 217 and the friction grooves 2171 on both sides of the winding roller 211 remain separated, and no braking resistance is generated. Therefore, the pipe can be pulled out smoothly. When a fixed length is required, the friction disc 217 and the friction grooves 2171 can be made to contact tightly through the drive of the double-acting cylinder 214 to achieve the limit and avoid retraction under the force of the coil spring.

[0036] When the pipe needs to be retrieved, the operator releases the pipe. Under the action of the elastic potential energy stored in the coil spring, the rotating shaft 2111 rotates in the opposite direction, starting the automatic retrieval of the pipe. At the same time, the driving gears 212 at both ends of the rotating shaft 2111 rotate synchronously with the rotating shaft 2111, driving the driven gear 213 on the support frame 1 to rotate through tooth surface meshing. Since the driving gear 212 and the driven gear 213 form a 4:1 reduction ratio, the speed of the driven gear 213 is reduced to 1 / 4 of that of the driving gear 212, forming a first-stage speed reduction. At this time, the control system sends a signal to extend the piston rod of the double-acting cylinder 214, pushing the connecting plates 215 on both sides and the rotating shaft 2111. 16. The friction disc 217 is pressed axially into the friction grooves 2171 on both sides of the winding roller 211. The friction disc 217 and the surface of the friction grooves 2171 generate sliding friction. This friction constitutes the second stage of deceleration braking for the rotation of the winding roller 211 (i.e., pipe retraction). By adjusting the air pressure of the bidirectional cylinder 214, the clamping force of the friction disc 217 can be precisely controlled, thereby realizing the adjustment of the pipe retraction speed. This ensures that the pipe, especially the longer and heavier pipe, can be smoothly and slowly reset at the end of the retraction. This effectively avoids the risks of pipe swinging, entanglement, and impact on the support caused by excessive retraction speed, and reduces the impact on the joint.

[0037] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0038] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An automatic retractable hose reel structure with a two-stage reduction transmission assembly, comprising a support frame (1), characterized in that: A winding roller (211) is fixedly installed on the upper part of the support frame (1), and a rotating shaft (2111) is rotatably installed in the middle of the winding roller (211). A deceleration mechanism (2) is provided on one side of the winding roller (211) to limit the rotation of the rotating shaft (2111). The deceleration mechanism (2) includes: The limiting component (21) includes a drive gear (212) fixedly installed at both ends of the rotating shaft (2111), and two symmetrically distributed driven gears (213) rotatably installed on one side of the support frame (1). The driven gears (213) mesh with the drive gears (212). A rotating shaft (216) is slidably provided through the middle of one side of each of the two driven gears (213). A friction disc (217) is fixedly installed at one end of each of the two rotating shafts (216). A drive component is provided on one side of each of the two rotating shafts (216). An adjustment component (22) is provided on the upper part of the support frame (1) for adjusting the extension direction of the wound tube.

2. The automatic retractor structure with a two-stage reduction transmission assembly according to claim 1, characterized in that: The adjustment assembly (22) includes an adjustment frame (221) mounted on the upper part of the support frame (1) via a damping bearing, and a limit frame (222) is bolted to one side of the upper part of the adjustment frame (221).

3. The automatic retractor structure with a two-stage reduction transmission assembly according to claim 1, characterized in that: The drive assembly includes a fixed frame (2141) fixedly installed on one side of the support frame (1). A two-way cylinder (214) is fixedly installed in the middle of one side of the fixed frame (2141). A connecting plate (215) is fixedly installed on both drive ends of the two-way cylinder (214). One end of each of the two rotating shafts (216) is rotatably installed on one side of the connecting plate (215).

4. The automatic retractor structure with a two-stage reduction transmission assembly according to claim 1, characterized in that: Two symmetrically distributed limiting blocks (2161) are fixedly installed on the outer sides of the two rotating shafts (216), and the limiting blocks (2161) are slidably inserted and locked in the middle of the driven gear (213).

5. The automatic retractable hose reel structure with a two-stage reduction transmission assembly according to claim 1, characterized in that: Friction grooves (2171) are provided on both sides of the winding roller (211), and the friction disc (217) and the friction grooves (2171) are used in conjunction with each other.

6. The automatic retractor structure with a two-stage reduction transmission assembly according to claim 1, characterized in that: A coil spring is provided in the middle of the rotating shaft (2111) to provide the retraction power of the wound tube. A fixing groove (2112) is provided on the outer side of the rotating shaft (2111) to fix the end of the tube at the initial winding end.

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