阅读说明：本技术 应用于低速旋转装置中的螺旋阻尼器 (Spiral damper applied to low-speed rotating device ) 是由 杨才伟 于 2019-11-25 设计创作，主要内容包括：本发明公开了一种应用于低速旋转装置中的螺旋阻尼器,包括油盘,油盘内设有密闭的油腔,油腔内充满具有黏性的流体介质,油腔中设有一内壳体,被壳体将油腔分隔为内油腔和外油腔,内壳体上靠近其左端处设有第一油孔,内壳体上靠近其右端处设有第二油孔,内油腔中设有与内壳体过盈配合的橡胶螺旋杆,橡胶螺旋杆与油盘活动连接,油盘上设有一可活动的插销,插销插入油腔中,且插销底端与第一油孔的孔口预留有可调的间隙,插销设有驱使其下压插入第一油孔的弹簧,外油腔与内油腔仅可通过间隙或第二油孔实现互通。本发明结构巧妙,使转动过快的放线筒旋转受阻,改善放线筒出线速度,在胶管缠绕钢丝的过程中,尽量使放线筒出丝的速度均匀。(The invention discloses a spiral damper applied to a low-speed rotating device, which comprises an oil pan, wherein a closed oil cavity is arranged in the oil pan, a viscous fluid medium is filled in the oil cavity, an inner shell is arranged in the oil cavity and is divided into an inner oil cavity and an outer oil cavity by the shell, a first oil hole is arranged on the inner shell close to the left end of the inner shell, a second oil hole is arranged on the inner shell close to the right end of the inner shell, a rubber spiral rod in interference fit with the inner shell is arranged in the inner oil cavity, the rubber spiral rod is movably connected with the oil pan, a movable bolt is arranged on the oil pan and is inserted into the oil cavity, an adjustable gap is reserved between the bottom end of the bolt and an orifice of the first oil hole, the bolt is provided with a spring for driving the bolt to be pressed downwards and inserted into the first oil hole. The invention has smart structure, prevents the wire-releasing cylinder which rotates too fast from rotating, improves the wire-outlet speed of the wire-releasing cylinder, and ensures that the wire-outlet speed of the wire-releasing cylinder is uniform as much as possible in the process of winding the steel wire by the rubber tube.)

1. The spiral damper applied to the low-speed rotating device is characterized by comprising an oil pan, wherein a closed oil cavity is arranged in the oil pan, the oil chamber is filled with viscous fluid medium, an inner shell is arranged in the oil chamber, the inner shell divides the oil cavity into an inner oil cavity and an outer oil cavity, a first oil hole is arranged on the inner shell close to the left end of the inner shell, a second oil hole is arranged on the inner shell body near the right end of the inner shell body, a rubber screw rod in interference fit with the inner shell body is arranged in the inner oil cavity, the rubber screw rod is movably connected with the oil pan, a movable bolt is arranged on the oil pan and inserted into the oil cavity, and an adjustable gap is reserved between the bottom end of the bolt and the orifice of the first oil hole, the bolt is provided with a spring which drives the bolt to be pressed downwards and inserted into the first oil hole, and the outer oil cavity and the inner oil cavity can be communicated only through the gap or the second oil hole.

2. The helical damper for a low speed rotating apparatus as claimed in claim 1, wherein said bolt comprises an upper body, a shoulder and a lower body, a support member is disposed outside said oil pan, said bolt is movably connected to said support member, said spring is sleeved on said upper body, one end of said spring abuts against said support member, the other end of said spring abuts against said shoulder, and said lower body is inserted into said oil chamber.

3. The helical damper applied to a low-speed rotating device as claimed in claim 1, wherein the rubber screw rod comprises a rotatable shaft body and a damping sleeve disposed on the shaft body, the damping sleeve is spirally disposed along an axial direction of the shaft body, and the damping sleeve is in interference fit with the inner housing.

4. The helical damper for use in low-speed rotating apparatuses as claimed in claim 3, wherein said damping sleeve includes an outer layer made of rubber.

5. The helical damper applied to a low-speed rotating device as claimed in claim 3, wherein the oil pan comprises a front cover and a rear cover, the front cover and the rear cover are respectively provided with a first bearing and a second bearing, the front end of the shaft body is movably sleeved with the first bearing, and the tail end of the shaft body is movably sleeved with the second bearing.

6. The damper applied to a low-speed rotating device of claim 5, wherein the first bearing and the second bearing are deep groove ball bearings.

Technical Field

The invention relates to the field of dampers, in particular to a spiral damper applied to a low-speed rotating device.

Background

The drilling rubber pipe is a common name of a rubber hose for rotary drilling and shock absorption and is commonly called as a water hose. In rotary drilling of geology and oil, a large volume of fluid mud is delivered to the drill bit by high pressure, and a rotary drilling hose is used as a flexible connection in the mud delivery line.

Existing drilling tubulars typically include an inner rubber layer and a wire wrap. Fig. 1 is a schematic diagram showing the winding of a conventional steel wire of a drilling hose, wherein the winding process is roughly as follows: firstly, a pay-off drum 111 with a steel wire winding is placed into a wheel disc, then a steel wire 112 is fixedly wound on the end part of a rubber tube 113, and the rubber tube is driven by a motor 114 to rotate along a straight line to advance for a preset stroke, so that the steel wire winding of the rubber tube is completed. Wherein, when the rubber tube is rotated and advanced, the steel wire pulls the pay-off drum to rotate.

However, the technicians find that some of the steel wires are tightly embedded in the inner rubberized fabric in the turns of the steel wires wound on the inner rubberized fabric, and a large gap exists between the other part of the steel wires and the inner rubberized fabric, so that the steel wires are loose.

The main reason that the steel wire winding is different on inner adhesive tape is that the speed that a pay-off drum goes out the steel wire is inhomogeneous, and leads to one of them problem that the pay-off drum rotational speed on the rim plate is uneven lies in the weight of a pay-off drum, and the rubber tube is at the winding steel wire in-process, because the steel wire of rolling up on a pay-off drum is shortening, and the speed of being qualified for the next round of competitions of a pay-off drum is accelerating, leads to follow-up steel wire that.

In order to solve the problem of uneven outlet speed of the pay-off drum, a technician determines to add a bearing between the rotating shaft and the wheel disc (the wheel shaft is fixedly connected with the pay-off drum, and the pay-off drum drives the wheel shaft to rotate on the wheel disc), so that friction between the wheel shaft and the wheel disc is reduced, and the whole pay-off speed of the pay-off drum is consistent as much as possible. However, the increase of the bearing between the rotating shaft and the wheel disc inevitably leads to the over-high outgoing speed of the pay-off drum, so that the steel wire wound on the inner rubberized fabric is too loose, and therefore, a damper is designed by the person skilled in the art.

Disclosure of Invention

The invention aims to solve the technical problem of providing a spiral damper applied to a low-speed rotating device, so that a pay-off drum which rotates too fast is prevented from rotating, the wire outlet speed of the pay-off drum is improved, and the wire outlet speed of the pay-off drum is as uniform as possible in the process of winding a steel wire by a rubber tube.

The technical scheme adopted by the invention for solving the technical problems is as follows: the spiral damper applied to the low-speed rotating device comprises an oil disc, wherein a closed oil cavity is arranged in the oil disc, the oil chamber is filled with viscous fluid medium, an inner shell is arranged in the oil chamber, the inner shell divides the oil cavity into an inner oil cavity and an outer oil cavity, a first oil hole is arranged on the inner shell close to the left end of the inner shell, a second oil hole is arranged on the inner shell body near the right end of the inner shell body, a rubber screw rod in interference fit with the inner shell body is arranged in the inner oil cavity, the rubber screw rod is movably connected with the oil pan, a movable bolt is arranged on the oil pan and inserted into the oil cavity, and an adjustable gap is reserved between the bottom end of the bolt and the orifice of the first oil hole, the bolt is provided with a spring which drives the bolt to be pressed downwards and inserted into the first oil hole, and the outer oil cavity and the inner oil cavity can be communicated only through the gap or the second oil hole.

Further preferred embodiments of the present invention: the bolt comprises an upper section body, a shaft shoulder and a lower section body, a support piece is arranged on the outer side of the oil pan, the bolt is movably connected with the support piece, the spring is sleeved outside the upper section body, one end of the spring abuts against the support piece, the other end of the spring abuts against the shaft shoulder, and the lower section body is inserted into the oil cavity. The spring arranged between the supporting piece and the shaft shoulder mainly applies pressure to the bolt, so that the bolt floats upwards to bear resistance, and the gap between the first oil hole and the bottom end of the bolt is adjustable.

Further preferred embodiments of the present invention: the rubber screw rod comprises a rotatable shaft body and a damping sleeve arranged on the shaft body, the damping sleeve is spirally arranged along the axial direction of the shaft body, and the damping sleeve is in interference fit with the inner shell.

Further preferred embodiments of the present invention: the damping sleeve comprises an outer layer made of rubber. The damping sleeve made of rubber has good sealing performance.

Further preferred embodiments of the present invention: the oil pan comprises a front cover and a rear cover, wherein the front cover and the rear cover are respectively provided with a first bearing and a second bearing, the front end of the shaft body is movably sleeved with the first bearing, and the tail end of the shaft body is movably sleeved with the second bearing.

Further preferred embodiments of the present invention: the first bearing and the second bearing are both deep groove ball bearings.

Compared with the prior art, the invention has the advantages of simple structure and ingenious design, the rotation of the pay-off drum which rotates too fast is blocked, the wire outlet speed of the pay-off drum is improved, and the wire outlet speed of the pay-off drum is uniform as much as possible in the process of winding the steel wire by the rubber tube.

The fluid medium arranged in the oil cavity of the oil pan has viscosity, so that the bearing can bear certain resistance during rotation; the first oil hole is formed in the left end side portion of the inner shell, the second oil hole is formed in the right end side portion of the inner shell, the inner oil cavity is mainly communicated with the outer oil cavity, the rubber spiral rod arranged in the inner oil cavity can be connected with a rotating shaft or a pay-off drum, when the rubber spiral rod rotates, fluid media in the inner oil cavity can be conveyed in one direction, the bolt is arranged in the oil cavity and can move, and when the bolt moves (floats upwards or presses downwards), the gap between the bolt and the first oil hole is adjusted.

Briefly, after the pay-off drum is connected with one end of the rubber screw rod, the pay-off drum drives the rubber screw rod to rapidly rotate (about 20-30 r/min) according to a preset direction (the direction of conveying a fluid medium to an outer oil cavity through a first oil hole), and because the fluid medium in the inner oil cavity has viscosity, the rubber screw rod can bear a certain degree of resistance when rotating, so that the rotating speed (about 15-20 r/min) of the rubber screw rod is reduced, further, in the oil disc, the fluid medium in the outer oil cavity enters the inner oil cavity through a second oil hole, the rubber screw rod rotates to drive the inner fluid medium to flow and convey the fluid medium to the outer oil cavity through the first oil hole, so that a circulation is formed, when the rubber screw rod rotates to drive the inner fluid medium to be conveyed to the first oil hole, the pressure at the first oil hole is increased, and the bolt is pushed upwards, order about the clearance increase, but because the spring (spring force can adapt to the within range) has overcoat on the bolt, it is big more that it receives ascending thrust, and its elasticity that receives the pushing down is just also big more, and the clearance can carry out the adaptive control and guarantee its opening size stability, finally realizes being close at the uniform velocity rotational speed of rubber hob, improves the outlet wire speed of a pay off section of thick bamboo, at the in-process of rubber tube winding steel wire, makes the speed that a pay off section of thick bamboo goes out the silk as far as possible even.

Drawings

FIG. 1 is a diagram of a conventional steel wire winding of a hose;

FIG. 2 is a schematic view of the structure of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

As shown in fig. 1 to 2: a spiral damper applied to a low-speed rotating device comprises an oil disc 1, wherein the oil disc 1 is disc-shaped, a closed and cylindrical oil cavity is arranged in the oil disc 1, the oil cavity is filled with viscous fluid medium, a cylindrical inner shell 2 is arranged in the oil cavity and divides the oil cavity into an inner oil cavity 3 and an outer oil cavity 4, a first oil hole 5 (conveying the fluid medium from the inner oil cavity 3 to the outer oil cavity 4) is arranged on the inner shell 2 and close to the left end of the inner shell, a second oil hole 6 (conveying the fluid medium from the outer oil cavity 4 to the inner oil cavity 3) is arranged on the inner shell 2 and close to the right end of the inner shell 2, a rubber spiral rod 7 in interference fit with the inner shell 2 is arranged in the inner oil cavity 3, the rubber spiral rod 7 is movably connected with the oil disc 1, a movable bolt 8 is arranged on the oil disc 1, the bolt 8 is inserted into the oil cavity, an adjustable gap 9 is reserved between the bottom end of the bolt 8 and an, the outer oil chamber 4 and the inner oil chamber 3 can communicate only through the gap 9 or the second oil hole 6.

The bolt 8 comprises an upper section body 81, a shaft shoulder 82 and a lower section body 83, a support member 10 is arranged on the outer side of the oil pan 1, the bolt 8 is movably connected with the support member 10, the spring 11 is sleeved on the upper section body 81, one end of the spring 11 abuts against the support member 10, the other end of the spring 11 abuts against the shaft shoulder 82, and the lower section body 83 is inserted into the oil cavity.

The rubber screw rod 7 comprises a rotatable shaft body 71 and a damping sleeve 72 arranged on the shaft body 71, wherein the damping sleeve 72 is spirally arranged along the axial direction of the shaft body 71, and the damping sleeve 72 is in interference fit with the inner shell 2.

The damping sleeve 72 includes an outer layer 721 of rubber.

The oil pan 1 comprises a front cover 12 and a rear cover 13, the front cover 12 and the rear cover 13 are respectively provided with a first bearing 14 and a second bearing 15, the front end of a shaft body 71 is movably sleeved with the first bearing 14, and the tail end of the shaft body 71 is movably sleeved with the second bearing 15.

The first bearing 14 and the second bearing 15 are both deep groove ball bearings.

The paying-off cylinder is connected with a rubber spiral rod 7, when a steel wire is discharged from the paying-off cylinder, the paying-off cylinder drives the rubber spiral rod 7 to rotate clockwise, an outer oil cavity 4 conveys a fluid medium to a first oil hole 5 through a second oil hole 6, the outer oil cavity 4 and an inner oil cavity 3 realize the flowing circulation of the fluid medium through the first oil hole 5 and the second oil hole 6, the rubber spiral rod 7 rotates, the fluid medium remained between grooves between damping sleeves 72 in the inner oil cavity 3 is conveyed to the first oil hole 5, a bolt 8 bears upward thrust, but because a spring 11 sleeved on the bolt 8 applies pressure to the bolt 8, a gap 9 between the bolt 8 and the first oil hole 5 can be adjusted in an adaptive mode according to the rotating speed of the rubber spiral rod 7, the opening size of the gap 9 tends to be constant, the uniform speed approaching to the rubber spiral rod 7 is realized, the wire outlet speed of the paying-off cylinder is improved, and in the process of winding the, the wire discharging speed of the wire discharging barrel is uniform as much as possible.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.