Pipe coiling device, rotary connecting device, forklift and working method of rotary connecting device

Abstract

The invention belongs to the technical field of forklift components or parts, and particularly relates to a pipe coiling device, a rotary connecting device, a forklift and a working method of the rotary connecting device. An oil through hole is formed in the auxiliary positioning piece; a sealing plate is arranged in the transition channel; an air storage ring groove is formed in the outer wall of the rotary connector, and the outer side of the air storage ring groove is wrapped with a positioning air bag. A plurality of vent holes are formed in the rotary connector in the circumferential direction; an exhaust plate is arranged on the outer wall of the auxiliary positioning piece; when the rotary connector is filled with oil liquid, the oil liquid pushes the auxiliary positioning part to slide towards the closing plate, so that the exhaust plate gets close to the closing plate and extrudes gas between the closing plate and the exhaust plate to enter the gas storage ring groove through the vent hole, the gas pressure in the gas storage ring groove is increased, the positioning airbag is driven to expand, and the reel is supported.

Description

Technical Field

[0001] This invention belongs to the technical field of tubular fittings for forklift components or parts, specifically relating to a connection device between hoses or a connection device between a hose and a flexible sleeve, and particularly to a hose reel, a rotating connection device, and a working method of a forklift and the rotating connection device. Background Technology

[0002] A hose reel is a specialized winding device for forklift hydraulic systems. It is primarily used to manage and protect hydraulic hoses, ensuring operational safety and extending hose lifespan, while effectively reducing hose length and thus simplifying the hydraulic transmission path of the forklift.

[0003] The hose reel includes a rotating reel for winding and unwinding hydraulic hose, and a rotary connector connected to the reel. The fixed end of the fixed hydraulic hose is connected to the fixed end of the rotary connector, and the hydraulic hose wound inside the reel is connected to the rotating end of the rotary connector, thereby realizing the circulation and transfer of hydraulic oil.

[0004] However, due to the harsh working environment of forklifts, the forks are often moved horizontally under load, which inevitably causes the hose reel to be subjected to lateral loads, which in turn causes the rotary connector to bear lateral load forces, resulting in damage to the rotary joint.

[0005] Therefore, there is an urgent need to provide a hose reel, a rotating connection device, a forklift, and a method for operating the rotating connection device to solve the technical problem of damage to the rotating joint of the hose reel caused by lateral load.

[0006] It should be noted that the information disclosed in this background section is only for understanding the background technology of this application concept, and therefore, the above description is not considered to constitute prior art information. Summary of the Invention

[0007] This disclosure provides at least one hose reel, a rotating connection device, a forklift, and a method for operating the rotating connection device.

[0008] In a first aspect, embodiments of this disclosure provide a hose reel, including: a rotary connector mounted on one side of a reel and having a transition channel inside;

[0009] An auxiliary positioning component has an oil passage hole inside, and the head of the auxiliary positioning component is placed in a transition channel;

[0010] The transition channel has a closed plate, and the auxiliary positioning component is slidably disposed inside the closed plate.

[0011] The outer wall of the rotary connector is provided with an air storage ring groove, and the outside of the air storage ring groove is covered with a positioning airbag.

[0012] The rotary connector has several vent holes along its circumference to connect the gas storage ring groove and the transition channel.

[0013] The outer wall of the auxiliary positioning component has an exhaust plate, which is spaced apart from the sealing plate and located on both sides of the vent hole.

[0014] The sealing plate and the exhaust plate are respectively sealed to the rotary connector;

[0015] Furthermore, when the rotary connector is filled with oil, the oil pushes the auxiliary positioning component to slide towards the sealing plate, so that the exhaust plate is close to the sealing plate and the gas between the sealing plate and the exhaust plate is squeezed into the air storage ring groove through the vent hole, so that the air pressure in the air storage ring groove increases, drives the positioning airbag to expand, and supports the reel.

[0016] In one optional embodiment, a reset spring is installed in the transition channel, with one end of the reset spring connected to the transition channel and the other end connected to the exhaust plate.

[0017] In one optional embodiment, the rotary connector is further provided with an oil inlet channel, which is connected to the transition channel;

[0018] The rotary connector has an oil inlet hole on one side, which is connected to the oil inlet channel.

[0019] In one alternative embodiment, one end of the auxiliary positioning member is inserted into the oil inlet channel, and the auxiliary positioning member has a flared opening on the side facing the oil inlet.

[0020] Secondly, embodiments of this disclosure also provide a rotary connection device using the hose reel as described above, the rotary connection device further comprising:

[0021] The shaft is hollow inside, and one side is suitable for mounting a rotary connector;

[0022] Two tube discs are installed at intervals on the rotating shaft;

[0023] The loading ring is coaxially mounted on the outside of the rotating shaft, and the two tube discs are respectively attached to both sides of the loading ring.

[0024] In one alternative embodiment, the loading ring has a notch, and the rotating shaft has an adapter facing the notch, the adapter communicating with the inner cavity of the rotating shaft;

[0025] The adapter is suitable for connecting oil pipes.

[0026] Thirdly, this disclosure also provides a forklift, including the rotary connection device as described above, and the forklift further includes:

[0027] The front frame is mounted at the front of the forklift body and has slide rails; the rotating connection device is mounted on the top of the front frame.

[0028] The loading platform is slidably mounted on a slide rail and has a pair of forks;

[0029] Oil supply lines, which include fixed oil lines and movable oil lines;

[0030] The fixed oil pipe is installed on the front frame, with one end connected to the forklift body and the other end connected to the rotary connector.

[0031] One end of the movable oil pipe is connected to the adapter, and the other end is connected to the material loading platform.

[0032] In one optional embodiment, a hydraulic cylinder is installed on the loading platform, and a movable oil pipe is connected to the oil inlet of the hydraulic cylinder.

[0033] The movable end of the hydraulic cylinder is connected to the forks;

[0034] The movable oil pipe sleeve has a limiting component.

[0035] In one alternative embodiment, a baffle is installed on the top of the loading platform, and an electric actuator is installed on the top of the front frame, with the electric actuator being connected to the baffle in a transmission manner.

[0036] Fourthly, this disclosure also provides a method for operating a rotary connecting device, wherein the rotary connecting device described above is used to perform the method, and the method for operating the rotary connecting device includes:

[0037] Step S1: When the inside of the rotating connector is filled with oil, the shaft rotates and releases the oil pipe on the reel.

[0038] In step S2, the oil-push auxiliary positioning component slides towards the sealing plate so that the exhaust plate is close to the sealing plate and the gas between the sealing plate and the exhaust plate is squeezed into the gas storage ring groove through the vent hole.

[0039] In step S3, the air pressure in the gas storage ring groove increases, driving the positioning airbag to expand. When the oil pipe pulls the tubing coil outward, the expanded airbag abuts against and supports the tubing coil from the outside.

[0040] The beneficial effects of this invention are that by setting an auxiliary positioning component to guide the oil, and when the oil passes through, it pushes the auxiliary positioning component so that the exhaust plate is close to the sealing plate, thereby forcing the gas into the gas storage ring groove and driving the positioning airbag to expand, thereby supporting the reel. Furthermore, the expansion degree of the airbag is adaptively adjusted according to different oil supply pressures to cope with lateral loads under different pressure conditions.

[0041] Other features and advantages of the invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention. The objects and other advantages of the invention are realized and obtained in accordance with the structures particularly pointed out in the description, claims and drawings.

[0042] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0043] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0044] Figure 1 A cross-sectional view of a hose reel provided in an embodiment of this disclosure;

[0045] Figure 2 A schematic diagram of the inflated state of a positioning airbag provided in an embodiment of this disclosure;

[0046] Figure 3 A perspective view of a rotating connection device provided in an embodiment of this disclosure;

[0047] Figure 4 A cross-sectional view of a rotating connection device provided in an embodiment of this disclosure;

[0048] Figure 5 This is a perspective view of a forklift provided in an embodiment of the present disclosure.

[0049] In the picture:

[0050] 1. Oil supply pipeline; 11. Fixed oil pipeline; 111. Movable oil pipeline;

[0051] 12. Rotary connecting device; 121. Rotating shaft; 122. Tube disc; 123. Loading ring; 125. Adapter;

[0052] 13. Limiting component; 131. Limiting block;

[0053] 2. Loading platform; 21. Hydraulic cylinder; 22. Baffle; 23. Forks;

[0054] 3. Front frame; 31. Slide rail; 32. Electric actuator; 33. Support frame;

[0055] 4. Rotary connector; 41. Transition channel; 42. Sealing plate; 43. Air storage ring groove; 44. Positioning airbag; 45. Vent hole; 46. Return spring; 47. Oil inlet channel; 48. Oil inlet hole;

[0056] 5. Auxiliary positioning component; 51. Oil passage hole; 52. Exhaust plate; 53. Horn mouth. Detailed Implementation

[0057] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0058] In this document, when it is mentioned that a first component is located on a second component, this can mean that the first component can be directly formed on the second component, or that a third component can be inserted between the first and second components. Furthermore, in the accompanying drawings, the thickness of the components may be exaggerated or reduced for the purpose of effectively describing the technical content.

[0059] In this document, when an element or layer is referred to as “located,” “joined to,” “connected to,” “attached to,” or “coupled to” another element or layer, it may be directly located, joined, connected, attached to, or coupled to the other element or layer, or there may be intermediate elements or layers present. Conversely, when an element is referred to as “directly on another element or layer,” “directly joined to,” “directly connected to,” “directly attached to,” or “directly coupled to” another element or layer, there may be no intermediate elements or layers present. Other terms used to describe relationships between elements should be interpreted in a similar manner (e.g., “between” versus “directly between,” “adjacent” versus “directly adjacent,” etc.). As used herein, the term “and / or” includes any and all combinations of one or more of the related listed items.

[0060] As used herein, the phrases “in one embodiment,” “according to one embodiment,” “in some embodiments,” etc., generally refer to the fact that a particular feature, structure, or characteristic following the phrase can be included in at least one embodiment of this disclosure. Therefore, a particular feature, structure, or characteristic can be included in more than one embodiment of this disclosure, such that these phrases do not necessarily refer to the same embodiment. As used herein, the terms “example,” “exemplary,” etc., are used to “serve as an example, instance, or illustration.” Any implementation, aspect, or design described herein as “example” or “exemplary” is not necessarily to be construed as preferred or superior to other implementations, aspects, or designs. Rather, the use of the terms “example,” “exemplary,” etc., is intended to present concepts in a specific manner.

[0061] Research has shown that a hose reel is a specialized winding device for forklift hydraulic systems. It is mainly used to manage and protect hydraulic hoses, ensure operational safety, extend hose life, and effectively reduce pipeline length, thereby simplifying the hydraulic transmission path of the forklift.

[0062] The hose reel includes a rotating reel for winding and unwinding hydraulic hose, and a rotary connector connected to the reel. The fixed end of the fixed hydraulic hose is connected to the fixed end of the rotary connector, and the hydraulic hose wound inside the reel is connected to the rotating end of the rotary connector, thereby realizing the circulation and transfer of hydraulic oil.

[0063] However, due to the harsh working environment of forklifts, the forks often move horizontally under load, which inevitably causes the hose reel to suffer radial loads, leading to damage to the rotary connector. Related technologies use pre-set washers to absorb the load force generated during lateral tilting, but because the rotary joint needs to rotate for a long time, irreversible wear will occur on the washers, leading to washer failure.

[0064] Therefore, there is an urgent need to provide a hose reel, a rotating connection device, a forklift, and a method for operating the rotating connection device to solve the technical problem that the forklift often moves its forks horizontally under load, which easily causes the hose reel to suffer radial loads, leading to damage to the rotating connection head.

[0065] Based on the above research, this disclosure provides a hose reel, a rotating connection device, a forklift, and a method for operating the rotating connection device. By setting an auxiliary positioning component to guide the oil, the oil pushes the auxiliary positioning component as it passes through, so that the exhaust plate is close to the sealing plate, thereby forcing the gas into the air storage ring groove and driving the positioning airbag to expand, thereby supporting the reel.

[0066] The shortcomings of the above solutions are the result of the inventor's practical experience and careful research. Therefore, the discovery process of the above problems and the solutions proposed in this disclosure below should be considered as the inventor's contribution to this disclosure.

[0067] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0068] The following detailed description of some embodiments of the present invention is provided in conjunction with the accompanying drawings. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0069] The description is based on the accompanying drawings and in conjunction with the components in the claims that are marked in the drawings. Some terms in the claims are explained in relation to the drawings, especially functional names or custom terms, or data ranges. For example, if a temperature threshold is mentioned, the specification should specify the exact value.

[0070] The purpose of the explanation includes clarifying the technical features, covering the scope of protection of equivalent technical features, and highlighting the working process and specific technical effects of the core inventive points.

[0071] Reference Figure 1 This disclosure provides a hose reel, including: a rotary connector 4, with a stationary head and a moving tail, for use in... Figure 1 For example, the left side is the stationary end, and the right side is the moving end. The moving end is rotatably connected to the stationary end, and a bearing is installed at the connection. The inner wall of the moving end has internal threads, and the moving end is installed on one side of the reel through the internal threads, so that the moving end can rotate synchronously when the reel rotates.

[0072] Reference Figure 1 In at least one embodiment, there is a transition channel 41 inside for circulating hydraulic oil. The transition channel 41 has an auxiliary positioning member 5. The auxiliary positioning member 5 is cylindrical and has an oil passage hole 51 that runs through it along the axial direction. The hydraulic oil can pass through the oil passage hole 51 and pass through the auxiliary positioning member 5 to realize the circulation of hydraulic oil.

[0073] Reference Figure 1 In at least one embodiment, the transition channel 41 has a sealing plate 42, and the auxiliary positioning member 5 is slidably disposed inside the sealing plate 42, that is, the auxiliary positioning member 5 penetrates the sealing plate 42 and can slide back and forth along the axial direction. The outer wall of the rotary connector 4 is provided with an air storage ring groove 43, and the outer side of the air storage ring groove 43 is covered with a positioning airbag 44. On the other hand, the rotary connector 4 is provided with a plurality of vent holes 45 along the circumference to connect the air storage ring groove 43 and the transition channel 41. At the same time, the outer wall of the auxiliary positioning member 5 has an exhaust plate 52, which is spaced apart from the sealing plate 42 and located on both sides of the vent holes 45. The sealing plate 42 and the exhaust plate 52 are respectively sealed to the rotary connector 4.

[0074] Reference Figure 2In at least one embodiment, the above-described configuration forms a closed space for storing only gas between the sealing plate 42 and the exhaust plate 52, and this closed space is connected to the gas storage ring groove 43 through the vent 45. When the auxiliary positioning member 5 approaches the moving end of the rotary connector 4, the exhaust plate 52 approaches the sealing plate 42, thereby compressing the gas in the closed space and allowing the gas to enter the gas storage ring groove 43 through the vent 45, increasing the gas pressure in the gas storage ring groove 43. This causes the gas in the gas storage ring groove 43 to inflate the positioning airbag 44. In this state, when the rotary connector 4 is installed on one side of the reel, the inflated positioning airbag 44 can fit against the outer side of the reel and support the reel, thereby offsetting the lateral load on the reel, stabilizing the reel's state during forklift operation, and preventing damage to the rotary connector 4.

[0075] Specifically, since the expansion degree of the air bladder is determined by the amount of gas pumped in, the air bladder expands more when high-pressure oil flows. This is because when high-pressure oil is transmitted, it means that the forks move laterally more. If the forks wobble at this time, the lateral load generated is greater. To cope with this, stronger air pressure is applied. Furthermore, when there is no hydraulic oil or a small amount of hydraulic oil is being supplied, it means that the forks do not move laterally or move only slightly. In this case, the air bladder does not expand or expands only slightly, thereby avoiding unnecessary wear caused by the rotation of the hose reel.

[0076] Reference Figure 1 In at least one embodiment, an oil inlet hole 48 is provided on the stationary end side of the rotary connector 4. The oil inlet hole 48 is connected to the transition channel 41. When the rotary connector 4 is filled with oil through the oil inlet hole 48, the oil pushes the auxiliary positioning member 5 along the flow direction so that the auxiliary positioning member 5 slides towards the moving end, so that the exhaust plate 52 is close to the sealing plate 42.

[0077] Reference Figure 1 In at least one embodiment, to achieve the effect of the auxiliary positioning component 5 resetting to the stationary end after the hydraulic oil flow is interrupted, a reset spring 46 is installed in the transition channel 41. One end of the reset spring 46 is connected to the transition channel 41, and the other end is connected to the vent plate 52. When the hydraulic oil flow is interrupted, the reset spring 46 pulls the vent plate 52 and the auxiliary positioning component 5 to reset through elastic force.

[0078] Reference Figure 1 In at least one embodiment, the rotary connector 4 is further provided with an oil inlet channel 47, which communicates with the transition channel 41, and the oil inlet hole 48 communicates with the oil inlet channel 47. The cross-sectional area of ​​the oil inlet channel 47 is small, and when oil enters through the oil inlet hole 48, the flow rate of hydraulic oil in the oil inlet channel 47 is large, thereby increasing the thrust on the auxiliary positioning member 5 and ensuring that the auxiliary positioning member 5 can overcome the elastic force of the return spring 46 and slide towards the moving end.

[0079] Reference Figure 1 In at least one embodiment, in order to further increase the thrust provided to the auxiliary positioning member 5 when the hydraulic oil flows through the oil passage 51, one end of the auxiliary positioning member 5 is inserted into the oil inlet channel 47, and the auxiliary positioning member 5 has a flared mouth 53 on the side facing the oil inlet 48.

[0080] In addition, refer to Figure 3 This disclosure also provides a rotating connecting device 12, using the hose reel as described above. The rotating connecting device 12 further includes: a rotating shaft 121 and two tube reels 122. The rotating shaft 121 is hollow inside, and one side is adapted to mount a rotating connector 4. The two tube reels 122 are spaced apart and mounted on the rotating shaft 121. A loading ring 123 is located between the two tube reels 122. The loading ring 123 is coaxially mounted on the outside of the rotating shaft 121, and its two sides are respectively attached to the two tube reels 122. The oil pipe is adapted to be wound around the outside of the loading ring 123 and is limited between the two tube reels 122, ensuring proper winding or unwinding of the oil pipe.

[0081] Reference Figure 4 In at least one embodiment, the loading ring 123 has a notch, and the rotating shaft 121 has an adapter 125 facing the notch, the adapter 125 communicating with the inner cavity of the rotating shaft 121. The adapter 125 is adapted to connect an oil pipe. Specifically, hydraulic oil enters the rotary connector 4 through the oil inlet hole 48, then sequentially passes through the oil inlet channel 47, the oil passage hole 51, the transition channel 41, and the rotating shaft 121 to enter the adapter 125, and then enters the oil pipe through the adapter 125. Furthermore, when the rotating shaft 121 rotates, the oil pipe can be wound onto the loading ring 123 or unwound from the loading ring 123.

[0082] In addition, refer to Figure 5 This disclosure also provides a forklift, including the rotary connection device 12 as described above. The forklift further includes a front frame 3, a loading platform 2, and an oil supply line 1. The front frame 3 is mounted on the front end of the forklift body, and the loading platform 2 is mounted on the front end of the front frame 3. The front end of the front frame 3 has a slide rail 31, and the loading platform 2 is adapted to move up and down along the slide rail 31. The entire length of the loading platform 2 has a pair of forks 23, which can extend or retract horizontally to lift goods. The rotary connection device 12 is mounted on the top of the front frame 3. The oil supply line 1 includes a fixed oil pipe 11 and a movable oil pipe 111. The fixed oil pipe 11 is mounted on the front frame 3. One end of the fixed oil pipe 11 is connected to the forklift body to ensure oil supply, and the other end is connected to a rotary connector 4 to allow hydraulic oil to enter the rotary connection device 12. One end of the movable oil pipe 111 is connected to an adapter 125, and the other end is connected to the loading platform 2. The rear end of the front frame 3 has a support frame 33 to support the front frame 3 and the loading platform 2.

[0083] Reference Figure 5In at least one embodiment, a hydraulic cylinder 21 is installed on the loading platform 2, and a movable oil pipe 111 is connected to the oil inlet of the hydraulic cylinder 21. The movable end of the hydraulic cylinder 21 is connected to the fork 23. With this configuration, hydraulic oil in the forklift body can enter the rotary connector 4 through the fixed oil pipe 11, and then enter the movable oil pipe 111 through the adapter 125, and finally enter the hydraulic cylinder 21 through the movable oil pipe 111. As the loading platform 2 rises and falls, the movable oil pipe 111 can be wound into or unwound from the rotary connector 12 to adapt to the position of the loading platform 2. When the loading platform 2 is in a high position and the fork 23 extends horizontally to both sides, the movable oil pipe 111 is pulled, thereby generating a lateral load on the rotary connector 12. At this time, the inflated positioning airbag 44 can fit against the outside of the reel and support the reel, thereby offsetting the lateral load on the reel, stabilizing the reel's state during forklift operation, and preventing damage to the rotary connector 12.

[0084] Reference Figure 5 In at least one embodiment, in order to limit the stroke of the movable oil pipe 111, the movable oil pipe 111 is fitted with a limiting component 13, the limiting component 13 including a plurality of limiting blocks 131, the width of the limiting blocks 131 being greater than the spacing of the pipe coil 122, so as to prevent the movable oil pipe 111 from continuing to wind up, thereby limiting the winding stroke of the movable oil pipe 111.

[0085] Reference Figure 5 In at least one embodiment, a baffle 22 is installed on the top of the loading platform 2, and an electric actuator 32 is installed on the top of the front frame 3. The electric actuator 32 is connected to the baffle 22 via a transmission chain. The electric actuator 32 may be a motor, which can be connected to the baffle 22 via a transmission chain so that when the motor rotates, the interface drives the baffle 22 to lift the loading platform 2 via the transmission chain.

[0086] In addition, this disclosure also provides a method for operating a rotary connection device. The rotary connection device described above is used to perform this method. The method for operating the rotary connection device includes: step S1, when the inside of the rotary connector 4 is filled with oil, the rotating shaft 121 rotates and releases the oil pipe on the reel 122.

[0087] In step S2, the oil-push auxiliary positioning component 5 slides towards the sealing plate 42 so that the exhaust plate 52 is close to the sealing plate 42 and the gas between the sealing plate 42 and the exhaust plate 52 is squeezed into the gas storage ring groove 43 through the vent 45.

[0088] In step S3, the air pressure in the gas storage ring groove 43 increases, driving the positioning airbag 44 to expand. When the oil pipe pulls the pipe coil 122 outward, the expanded airbag abuts against and supports the pipe coil 122 from the outside.

[0089] In the description of the embodiments of the present invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in the present invention based on the specific circumstances.

[0090] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. Furthermore, terms such as "first," "second," and other numerical terms used herein do not imply order or sequence unless expressly indicated herein. Therefore, without departing from the teachings of the exemplary embodiments, the first element, component, region, layer, or segment discussed above may be referred to as a second element, component, region, layer, or segment.

[0091] Spatially relative terms, such as “inside,” “outside,” “below,” “below,” “down,” “above,” “up,” etc., may be used herein to describe the relationship between one element or feature and another element or feature as shown in the figures. In addition to the orientations depicted in the figures, spatially relative terms may be intended to cover different orientations of the device in use or operation. For example, if the device in the figure is flipped, an element described as “below” or “below” other elements or features would be oriented as “above” other elements or features. Thus, the example term “below” can cover both above and below orientations. The device may be oriented in other ways (rotated 90 degrees or in other orientations), and the spatially relative descriptors used herein are interpreted accordingly.

[0092] In the above discussion, unless otherwise stated, when used to describe numerical values, the terms “about,” “approximately,” “basically,” etc., indicate a change of + / - 10% in that value.

[0093] Based on the above-described preferred embodiments of the present invention, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the inventive concept. The technical scope of this invention is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. A hose reel, characterized in that, include: A rotary connector (4) is mounted on one side of the reel and has a transition channel (41) inside. An auxiliary positioning component (5) has an oil passage hole (51) inside, and the head of the auxiliary positioning component (5) is placed in the transition channel (41); The transition channel (41) has a closed plate (42) inside, and the auxiliary positioning component (5) is slidably disposed inside the closed plate (42); The outer wall of the rotary connector (4) is provided with an air storage ring groove (43), and the outer side of the air storage ring groove (43) is covered with a positioning airbag (44). The rotary connector (4) has several vent holes (45) in the circumferential direction to connect the gas storage ring groove (43) and the transition channel (41). The outer wall of the auxiliary positioning component (5) has an exhaust plate (52), which is spaced apart from the sealing plate (42) and located on both sides of the vent (45); The sealing plate (42) and the exhaust plate (52) are respectively sealed to the rotary connector (4); Furthermore, when the rotating connector (4) is filled with oil, the oil pushes the auxiliary positioning component (5) to slide towards the sealing plate (42) so that the exhaust plate (52) approaches the sealing plate (42) and squeezes the gas between the sealing plate (42) and the exhaust plate (52) into the air storage ring groove (43) through the vent (45) so that the air pressure in the air storage ring groove (43) increases, drives the positioning airbag (44) to expand, and supports the reel.

2. The hose reel as described in claim 1, characterized in that, A reset spring (46) is installed in the transition channel (41). One end of the reset spring (46) is connected to the transition channel (41), and the other end is connected to the exhaust plate (52).

3. The tube reel as described in claim 1, characterized in that, The rotary connector (4) is also provided with an oil inlet channel (47), which is connected to the transition channel (41); The rotary connector (4) has an oil inlet hole (48) on one side, and the oil inlet hole (48) is connected to the oil inlet channel (47).

4. The hose reel as described in claim 3, characterized in that, One end of the auxiliary positioning member (5) is inserted into the oil inlet channel (47), and the auxiliary positioning member (5) has a flared mouth (53) on the side facing the oil inlet hole (48).

5. A rotating connection device, characterized in that, Using the hose reel as described in any one of claims 1-4, the rotating connection device further includes: The rotating shaft (121) is hollow inside and one side is suitable for mounting a rotating connector (4). Two tube discs (122) are mounted on a rotating shaft (121) at intervals; The loading ring (123) is coaxially mounted on the outside of the rotating shaft (121), and the two tube discs (122) are respectively attached to both sides of the loading ring (123).

6. The rotating connection device as described in claim 5, characterized in that, The loading ring (123) has a notch, and the rotating shaft (121) has an adapter (125) facing the notch, the adapter (125) communicating with the inner cavity of the rotating shaft (121); The adapter (125) is suitable for connecting oil pipes.

7. A forklift, characterized in that, The forklift further includes the rotary connection device as described in any one of claims 5-6, and further includes: The front frame (3) is mounted on the front end of the forklift body and has a slide rail (31). The rotating connection device (12) is mounted on the top of the front frame (3). The loading platform (2) is slidably mounted on the slide rail (31) and has a pair of forks (23). The oil supply line (1) includes a fixed oil pipe (11) and a movable oil pipe (111). The fixed oil pipe (11) is installed on the front frame (3), one end of the fixed oil pipe (11) is connected to the forklift body, and the other end is connected to the rotary connector (4); One end of the movable oil pipe (111) is connected to the adapter (125), and the other end is connected to the loading platform (2).

8. The forklift as described in claim 7, characterized in that, The loading platform (2) is equipped with a hydraulic cylinder (21), and the movable oil pipe (111) is connected to the oil inlet of the hydraulic cylinder (21); The movable end of the hydraulic cylinder (21) is connected to the fork (23); The movable oil pipe (111) is fitted with a limiting assembly (13).

9. The forklift as described in claim 7, characterized in that, The top of the loading platform (2) is equipped with a baffle (22), and the top of the front frame (3) is equipped with an electric actuator (32). The electric actuator (32) is connected to the baffle (22) in a transmission manner.

10. A method for operating a rotary connecting device, characterized in that, The method is performed using the rotary connecting device as described in claim 5, wherein the operation method of the rotary connecting device includes: Step S1, when the inside of the rotating connector (4) is filled with oil, the rotating shaft (121) rotates and releases the oil pipe on the reel (122); In step S2, the oil-push auxiliary positioning component (5) slides towards the sealing plate (42) so that the exhaust plate (52) approaches the sealing plate (42) and squeezes the gas between the sealing plate (42) and the exhaust plate (52) into the gas storage ring groove (43) through the vent (45). In step S3, the air pressure in the gas storage ring groove (43) increases, driving the positioning airbag (44) to expand. When the oil pipe pulls the pipe coil (122) outward, the airbag expands and abuts against and supports the pipe coil (122) from the outside.

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