阅读说明：本技术 一种卷筒润滑装置和具有其的电葫芦起重机 (Reel lubricating device and electric hoist crane with same ) 是由 韩军印 贾武希 冯胜林 李建功 杨高建 赵付瑞 于 2021-09-24 设计创作，主要内容包括：本发明涉及一种卷筒润滑装置和具有其的电葫芦起重机,主梁上设置有可滑动的小车,小车上安装有升降电机和电葫芦卷筒,卷筒本体上设有贯穿筒壁的多个润油孔,润油孔与卷筒本体上的绳槽的底端连通,卷筒本体的内壁上焊接有轴向加强筋和布油环,轴向加强筋内设有轴向油槽,布油环内设有与轴向油槽连通的环形布油槽,卷筒本体的中心还固定有储油桶。本申请通过在卷筒本体上设置贯穿筒壁且与绳槽的底端连通的润油孔,润滑油从绳槽底部流向钢丝绳,对钢丝绳润滑可靠；在电磁阀关闭润油管时,润滑油在大气压力的作用下不会自润油孔流出,布油环内的润滑油自然挥发可使得缠绕在卷筒本体上的钢丝绳保持持续润滑,可有效减缓钢丝绳磨损。(The invention relates to a reel lubricating device and an electric hoist crane with the same.A main beam is provided with a slidable trolley, the trolley is provided with a lifting motor and an electric hoist reel, a plurality of lubricating holes penetrating through the wall of a reel body are arranged on the reel body, the lubricating holes are communicated with the bottom end of a rope groove on the reel body, the inner wall of the reel body is welded with an axial reinforcing rib and an oil distribution ring, an axial oil groove is arranged in the axial reinforcing rib, an annular oil distribution groove communicated with the axial oil groove is arranged in the oil distribution ring, and the center of the reel body is also fixedly provided with an oil storage barrel. By arranging the lubricating oil hole which penetrates through the drum wall and is communicated with the bottom end of the rope groove on the winding drum body, lubricating oil flows to the steel wire rope from the bottom of the rope groove, and the steel wire rope is lubricated reliably; when the oil lubrication pipe is closed by the electromagnetic valve, lubricating oil can not flow out from the oil lubrication hole under the action of atmospheric pressure, and the lubricating oil in the oil distribution ring can be naturally volatilized to keep continuous lubrication of the steel wire rope wound on the winding drum body, so that the abrasion of the steel wire rope can be effectively reduced.)

1. A winding drum lubricating device is characterized in that a winding drum body of an electric hoist winding drum is provided with a plurality of lubricating holes penetrating through the drum wall, the lubricating holes are communicated with the bottom end of a rope groove on the winding drum body, and the diameter of each lubricating hole is more than or equal to 1mm and less than or equal to 2 mm; the welding has the parallel on the inner wall of reel body the axial strengthening rib of the central axis of reel body, be equipped with in the axial strengthening rib with the axial oil groove of lubricant duct intercommunication, still welded fastening have on the inner wall of reel body with the oil distribution ring of axial oil groove intercommunication, be equipped with in the oil distribution ring with the annular oil distribution groove of axial oil groove intercommunication, the center of reel body still be fixed with through lubricant pipe with the oil storage bucket of annular oil distribution groove intercommunication, the oil-out of oil storage bucket is equipped with the control the solenoid valve that the lubricant pipe is expert, disconnected.

2. The spool lubrication device of claim 1, wherein: the inner wall of the winding drum body is welded with three or four axial reinforcing ribs.

3. The spool lubrication device of claim 1, wherein: the number of lubricating holes communicated with the axial oil grooves in the axial reinforcing ribs is less than or equal to one half or one third of the number of turns of the rope grooves in the winding drum body, and the lubricating holes are uniformly distributed along the axial direction of the winding drum body.

4. The spool lubrication device of claim 1, wherein: the oil distribution ring comprises an annular bottom plate, an annular outer groove plate, an annular inner groove plate and an annular sealing cover, wherein the annular bottom plate is perpendicular to the axial reinforcing rib, the annular outer groove plate is positioned at the outer edge of the annular bottom plate and is used for being welded with the inner wall of the winding drum body, and a notch corresponding to the axial oil groove is formed in the annular outer groove plate; the annular inner groove plate is positioned at the inner edge of the annular base plate, the annular oil distribution groove is formed between the annular outer groove plate and the annular inner groove plate, the annular sealing cover is opposite to the annular base plate to seal the annular oil distribution groove, and the annular sealing cover is also provided with an oil inlet interface communicated with the annular oil distribution groove.

5. The spool lubrication device of claim 4, wherein: the annular sealing cover is further provided with an inner ring plate and an outer ring plate which extend into the annular oil distribution groove, the oil inlet port is located between the inner ring plate and the outer ring plate, and the outer ring plate is provided with a radial oil distribution hole corresponding to the axial oil groove.

6. The spool lubrication device of claim 1, wherein: the oil storage barrel comprises a cylindrical part and a conical part, and the central axis of the oil storage barrel is superposed with the central axis of the winding drum body; the end part of the conical part is provided with the oil outlet; the center of the end part of the cylindrical part is also provided with an air inlet interface, the air inlet interface is connected with an air inlet pipe, and the air inlet pipe is sequentially provided with a one-way air inlet valve and a flow regulating valve.

7. The spool lubrication device of claim 6, wherein: the inner wall of the cylindrical part is provided with a plurality of spiral guide plates, and the spiral guide plates can convey lubricating oil to the oil outlet when the oil storage barrel rotates along with the winding drum body.

8. The spool lubrication device of claim 7, wherein: a circular central blocking plate is arranged at the joint of the cylindrical part and the conical part in the oil storage barrel, and the side surface of the central blocking plate is fixedly connected with the end part of each spiral guide plate; an inner conical plate corresponding to the inner wall of the conical part is further arranged on one side, close to the oil outlet, of the central blocking plate, an oil communicating cavity is formed between the inner wall of the conical part and the inner conical plate, and a plurality of conical partition plates are further arranged between the inner wall of the conical part and the inner conical plate.

9. The utility model provides an electric hoist crane, is provided with the slidable dolly on the girder, installs elevator motor and electric hoist reel on the dolly, around being equipped with wire rope on the electric hoist reel, the last suspension of wire rope has the hook block assembly who can lift by crane the heavy object, its characterized in that: the hoist drum is provided with a drum lubricating device according to any one of claims 1 to 8.

10. The hoist crane according to claim 9, wherein: the lifting hook pulley block comprises a fixed shaft fixed on a pulley shell, a pulley is arranged on the fixed shaft, a steel wire rope is wound on the pulley, and a lifting hook is further arranged on the lower side of the pulley shell; the fixed shaft is also provided with a pressure sensor and an encoder, the pressure sensor is used for detecting the load weight of the lifting hook, and the encoder is used for detecting the rotation parameters of the pulley; the upside of pulley shell still is equipped with automatically controlled box, be equipped with data acquisition module, control module, wireless communication module and power module in the automatically controlled box, data acquisition module with pressure sensor the encoder is connected, wireless communication module carries out signal transmission through radio communication with the hoist control unit, the hoist control unit calculates wire rope's running length according to the rotation number of turns of pulley, the diameter of pulley in every jack-up operation in-process, calculates, takes notes wire rope's the wearing and tearing condition when jack-up operation at every turn according to the product of every load weight of jack-up operation, jack-up operation time, wire rope running length to add the accumulative wear condition of calculating wire rope.

Technical Field

The invention relates to hoisting equipment, in particular to a winding drum lubricating device and an electric hoist crane with the same.

Background

In recent years, the market demand of unattended intelligent hoisting equipment based on the internet of things is gradually shown, particularly the hoisting operation in severe and high-risk industries, and the application of improving the intelligent control of the hoisting equipment through the application of the internet of things so as to reduce the manual participation is more and more. In the intelligent control process of the hoisting equipment, the steel wire rope is generally required to be lubricated regularly so as to reduce the abrasion of the steel wire rope; the special self-lubricating safe steel wire rope rigging for hoisting comprises an installation supporting seat, a hook installation disc, a lubricating oil box and a steel wire rope rotating shaft, wherein the installation supporting seat is installed on the upper surface of a steel wire rope rigging shell, the hook installation disc is installed on the lower surface of a steel wire rope of the rigging, and a tension sensor, a servo motor and an intelligent control valve are all electrically connected with an external control panel. The intelligent lubricating device has the advantages of scientific and reasonable structure, safety and convenience in use, simplicity in operation, rapidness in work and comprehensive functions, and is provided with the intelligent control valve, the lubricating spray nozzle and the lubricating oil box, so that the steel wire rope can be lubricated by lubricating oil in a timed and quantitative manner.

Disclosure of Invention

The invention aims to provide a winding drum lubricating device and an electric hoist crane with the same, and aims to solve the problem that the existing electric hoist crane is unreliable in lubricating a steel wire rope.

In order to solve the problems, the invention provides a winding drum lubricating device, wherein a winding drum body of an electric hoist winding drum is provided with a plurality of lubricating holes penetrating through the drum wall, the lubricating holes are communicated with the bottom end of a rope groove on the winding drum body, and the diameter of each lubricating hole is more than or equal to 1mm and less than or equal to 2 mm; the welding has the parallel on the inner wall of reel body the axial strengthening rib of the central axis of reel body, be equipped with in the axial strengthening rib with the axial oil groove of lubricant duct intercommunication, still welded fastening have on the inner wall of reel body with the oil distribution ring of axial oil groove intercommunication, be equipped with in the oil distribution ring with the annular oil distribution groove of axial oil groove intercommunication, the center of reel body still be fixed with through lubricant pipe with the oil storage bucket of annular oil distribution groove intercommunication, the oil-out of oil storage bucket is equipped with the control the solenoid valve that the lubricant pipe is expert, disconnected.

The reel lubricating device provided by the invention also has the following technical characteristics:

furthermore, three or four axial reinforcing ribs are welded on the inner wall of the winding drum body.

Furthermore, the number of lubricating holes communicated with the axial oil grooves in each axial reinforcing rib is less than or equal to one half or one third of the number of turns of the rope grooves in the winding drum body, and the lubricating holes are uniformly distributed along the axial direction of the winding drum body.

Furthermore, the lubricating oil pipe is also connected with a lubricating oil pump.

Further, the oil distribution ring comprises an annular bottom plate, an annular outer groove plate, an annular inner groove plate and an annular sealing cover, wherein the annular bottom plate is perpendicular to the axial reinforcing rib, the annular outer groove plate is located at the outer edge of the annular bottom plate and used for being connected with the inner wall of the winding drum body in a welding mode, and a notch corresponding to the axial oil groove is further formed in the annular outer groove plate; the annular inner groove plate is positioned at the inner edge of the annular base plate, the annular oil distribution groove is formed between the annular outer groove plate and the annular inner groove plate, the annular sealing cover is opposite to the annular base plate to seal the annular oil distribution groove, and the annular sealing cover is also provided with an oil inlet interface communicated with the annular oil distribution groove.

Furthermore, the annular sealing cover is also provided with an inner ring plate and an outer ring plate which extend into the annular oil distribution groove, the oil inlet port is positioned between the inner ring plate and the outer ring plate, and the outer ring plate is provided with a radial oil distribution hole corresponding to the axial oil groove.

Further, the oil storage barrel comprises a cylindrical part and a conical part, and the central axis of the oil storage barrel is overlapped with the central axis of the winding drum body; the end part of the conical part is provided with the oil outlet; the center of the end part of the cylindrical part is also provided with an air inlet interface, the air inlet interface is connected with an air inlet pipe, and the air inlet pipe is sequentially provided with a one-way air inlet valve and a flow regulating valve.

Further, a plurality of spiral guide plates are arranged on the inner wall of the cylindrical part, and when the oil storage barrel rotates along with the winding drum body, the spiral guide plates can convey lubricating oil to the oil outlet.

Furthermore, a circular central blocking plate positioned at the joint of the cylindrical part and the conical part is also arranged in the oil storage barrel, and the side surface of the central blocking plate is fixedly connected with the end part of each spiral guide plate; an inner conical plate corresponding to the inner wall of the conical part is further arranged on one side, close to the oil outlet, of the central blocking plate, an oil communicating cavity is formed between the inner wall of the conical part and the inner conical plate, and a plurality of conical partition plates are further arranged between the inner wall of the conical part and the inner conical plate.

Further, the diameter of the corresponding circumference of the inner edge of the spiral guide plate is less than or equal to one third of the diameter of the cylindrical part.

The invention also provides an electric hoist crane, wherein a sliding trolley is arranged on the main beam, a lifting motor and an electric hoist drum are arranged on the trolley, a steel wire rope is wound on the electric hoist drum, a hook pulley block capable of lifting a heavy object is suspended on the steel wire rope, and the electric hoist drum is provided with the drum lubricating device.

Furthermore, in the hoist crane, the hook pulley block comprises a fixed shaft fixed on a pulley housing, a pulley is mounted on the fixed shaft, a steel wire rope is wound on the pulley, and a hook is further mounted on the lower side of the pulley housing; the fixed shaft is also provided with a pressure sensor and an encoder, the pressure sensor is used for detecting the load weight of the lifting hook, and the encoder is used for detecting the rotation parameters of the pulley; the upside of pulley shell still is equipped with automatically controlled box, be equipped with data acquisition module, control module, wireless communication module and power module in the automatically controlled box, data acquisition module with pressure sensor the encoder is connected, wireless communication module carries out signal transmission through radio communication with the hoist control unit, the hoist control unit calculates wire rope's running length according to the rotation number of turns of pulley, the diameter of pulley in every jack-up operation in-process, calculates, takes notes wire rope's the wearing and tearing condition when jack-up operation at every turn according to the product of every load weight of jack-up operation, jack-up operation time, wire rope running length to add the accumulative wear condition of calculating wire rope.

The invention has the following beneficial effects: by arranging the lubricating holes which penetrate through the wall of the drum and are communicated with the bottom end of the rope groove on the drum body, lubricating oil flows to the steel wire rope from the bottom of the rope groove, so that the lubricating oil is not wasted compared with spray lubrication, and the lubricating oil is reliable in lubrication of the steel wire rope; the diameter of the lubricating hole is more than or equal to 1mm and less than or equal to 2mm, when the lubricating oil pipe is closed by the electromagnetic valve, lubricating oil cannot flow out of the lubricating hole under the action of atmospheric pressure, and the lubricating oil in the oil distribution ring can be naturally volatilized to keep continuous lubrication of the steel wire rope wound on the winding drum body, so that the abrasion of the steel wire rope can be effectively reduced; when the oil lubricating pipe is closed by the electromagnetic valve, along with the rotation of the winding drum body, lubricating oil can overcome atmospheric pressure under the action of centrifugal force and enters the rope groove from the oil lubricating hole at a small flow rate to lubricate the steel wire rope, and the lubricating oil in the rope groove can also flow back to the oil distributing ring when the steel wire rope turns over, so that the lubrication of the steel wire rope is reliable and efficient; welded axial strengthening rib is when providing the axial oil groove on the inner wall of reel body, has still compensatied the influence of drilling on the section of thick bamboo wall to section of thick bamboo wall intensity and has increased the structural strength of reel body, and this kind of structural design still is convenient for manufacturing.

Drawings

FIG. 1 is a schematic structural diagram of a roll lubricating apparatus according to an embodiment of the present invention;

FIG. 2 is a right side view of the spool lubrication device of FIG. 1;

FIG. 3 is a cross-sectional view of the spool lubrication device of FIG. 1;

FIG. 4 is an enlarged partial view of portion A of FIG. 3;

FIG. 5 is a schematic view of the installation of the oil distribution ring in the embodiment of the invention;

FIG. 6 is a schematic structural diagram of an oil distribution ring in an embodiment of the present invention;

FIG. 7 is a schematic view of a support ring according to an embodiment of the present invention;

FIG. 8 is a partial cross-sectional view of a swirl pot in an embodiment of the invention;

fig. 9 is a partial enlarged view of a portion B in fig. 8;

fig. 10 is a schematic structural view of an electric hoist crane according to an embodiment of the present invention;

fig. 11 is a schematic view of the construction of the set of hook pulleys in fig. 10;

FIG. 12 shows experimental data for the design of the bore diameter of the lubricating hole in the spool body.

Detailed Description

The invention will be described in detail hereinafter with reference to the accompanying drawings in conjunction with embodiments. It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict.

As shown in fig. 1 to 9, in the winding drum lubricating device provided by the embodiment of the present invention, a plurality of lubricating holes 102 penetrating through the drum wall are formed in a winding drum body 10 of an electric hoist winding drum, the lubricating holes 102 are communicated with the bottom end of a rope groove 103 formed in the winding drum body 10, and the diameter of the lubricating holes 102 is greater than or equal to 1mm and less than or equal to 2 mm; the welding has the parallel on the inner wall of reel body 10 the axial strengthening rib 11 of the central axis of reel body 10 is equipped with the axial oil groove 12 with moist oil hole 102 intercommunication in the axial strengthening rib 11, still welded fastening has the oil distribution ring 20 with axial oil groove 12 intercommunication on the inner wall of reel body 10, be equipped with the annular oil distribution groove 201 with axial oil groove 12 intercommunication in the oil distribution ring 20, the center of reel body 10 still is fixed with the oil storage bucket 30 through moist oil pipe (not shown in the figure) and annular oil distribution groove 201 intercommunication, the oil-out 301 of oil storage bucket 30 is equipped with the control moist oil pipe leads to, disconnected solenoid valve.

In the application, the lubricating oil flows to the steel wire rope 101 from the bottom of the rope groove 103 by arranging the lubricating oil hole 102 which penetrates through the wall of the drum body 10 and is communicated with the bottom end of the rope groove 103, so that the lubricating oil is not wasted compared with spray lubrication, and the lubricating oil is reliable in lubricating the steel wire rope 103; the diameter of the lubricating hole 102 is more than or equal to 1mm and less than or equal to 2mm, when the electromagnetic valve closes the lubricating pipe, the lubricating oil can not flow out from the lubricating hole under the action of atmospheric pressure, and the lubricating oil in the oil distribution ring 20 can be volatilized naturally to keep the steel wire rope 101 wound on the winding drum body 10 to be lubricated continuously, so that the abrasion of the steel wire rope can be effectively reduced; when the oil lubricating pipe is closed by the electromagnetic valve, along with the rotation of the winding drum body, lubricating oil can overcome atmospheric pressure under the action of centrifugal force and enters the rope groove from the oil lubricating hole with smaller flow to lubricate the steel wire rope, the lubricating oil in the rope groove can also flow back to the oil distributing ring when the steel wire rope turns over, so that the lubrication of the steel wire rope is reliable and efficient, particularly, the rotating speed of the winding drum body of the electric hoist crane in hoisting operation is usually not high, the centrifugal action generated when the winding drum body rotates is not large, the proper diameter of the oil lubricating hole can be determined through calculation and experiments, and the lubricating oil cannot be thrown away from the winding drum body to cause the splashing of the lubricating oil when the winding drum body rotates; in addition, the axial strengthening rib 11 that welds on the inner wall of the reel body 10 in this application is when providing axial oil groove 12, has still compensatied the influence of drilling on the section of thick bamboo wall to section of thick bamboo wall intensity and has increased the structural strength of reel body, and this kind of structural design still is convenient for manufacturing.

In one embodiment of the present application, it is preferable that three or four axial ribs 11 are welded to the inner wall of the spool body 10. Preferably, the number of the lubricating holes 102 communicating with the axial oil grooves 12 in each axial reinforcing rib 11 is less than or equal to one half or one third of the number of turns of the rope grooves 103 on the spool body 10, and the lubricating holes 102 are uniformly arranged in the axial direction of the spool body 10, thereby providing the spool body with high structural strength while providing the lubricating holes. Preferably, the lubricating oil pipe is further connected with a lubricating oil pump, when the steel wire rope 101 needs to be lubricated, the lubricating oil in the oil storage barrel can be pumped to the lubricating oil hole through the lubricating oil pump, and preferably, the lubricating oil pump is of a low-power and low-pressure type, so that the lubricating oil is prevented from overflowing out of the rope groove when the pumping pressure is too high.

In one embodiment of the present application, preferably, the oil distribution ring 20 includes an annular bottom plate 21, an annular outer groove plate 22, an annular inner groove plate 23 and an annular sealing cover 24, the annular bottom plate 21 is perpendicular to the axial reinforcing rib 11, the annular outer groove plate 22 is located at the outer edge of the annular bottom plate 21 and is used for being welded with the inner wall of the reel body 10, and the annular outer groove plate 22 is further provided with a notch 221 corresponding to the axial oil groove 12; the annular inner groove plate 23 is positioned at the inner edge of the annular bottom plate 21, an annular oil distribution groove 201 is formed between the annular outer groove plate 21 and the annular inner groove plate 22, the annular sealing cover 24 is opposite to the annular bottom plate 21 to seal the annular oil distribution groove 201, and the annular sealing cover 24 is also provided with an oil inlet interface 241 communicated with the annular oil distribution groove 201; therefore, the oil distribution ring 20 is reasonable in structure and convenient to produce, manufacture and install, and the structural strength of the winding drum body 10 can be improved through the oil distribution ring 20. Specifically, a plurality of threaded holes are further formed in the annular bottom plate 21 and the annular outer groove plate 22, and the annular seal cover 24 is provided with connecting holes corresponding to the threaded holes, so that the annular seal cover can be conveniently mounted and dismounted through screws or bolts.

In an embodiment of the present application, it is preferable that the annular cover 24 further has an inner ring plate 242 and an outer ring plate 243 extending into the annular oil distribution groove 201, the oil inlet port 241 is located between the inner ring plate 242 and the outer ring plate 243, and the outer ring plate 243 is provided with a radial oil distribution hole 244 corresponding to the axial oil groove 12, so that the flow path and the flow cross section of the lubricating oil in the oil distribution ring can be adjusted by the inner ring plate 242 and the outer ring plate 243, so that the lubricating oil uniformly enters each axial oil groove through the radial oil distribution hole.

In one embodiment of the present application, it is preferable that the swirl pot 30 includes a cylindrical portion 31 and a conical portion 32, and a central axis of the swirl pot 30 coincides with a central axis of the spool body 10; an oil outlet 301 is arranged at the end part of the conical part 32; the center of the tip of section of thick bamboo 31 still is equipped with the interface 302 of admitting air, is connected with the intake pipe (not shown in the figure) on the interface 302 of admitting air, install one-way admission valve, flow control valve in proper order in the intake pipe, specifically speaking, one-way admission valve is installed between flow control valve and storage bucket 30, and one-way admission valve can make the air get into storage bucket 30 and prevent that lubricating oil from the interface outflow that admits air, and the steerable air of flow control valve gets into the velocity of flow of storage bucket 30, the play oil flow of steerable lubricating oil from this. In one embodiment of the present application, it is preferable that the cylinder part 31 of the swirl pot 30 is fixed at the center of the spool body 10 by the support ring 40.

In an embodiment of the present application, it is preferable that a plurality of spiral flow deflectors 33 are disposed on an inner wall of the cylindrical portion 31, and the spiral flow deflectors 33 can convey the lubricating oil to the oil outlet 301 when the oil storage barrel 30 rotates with the spool body 10, and in this embodiment, the lubricating oil can be driven to flow to the rope groove through the lubricating oil pipe, the annular oil distribution groove 201, the axial oil groove 12, and the lubricating oil hole 102 by using a centrifugal force generated when the spool body 10 rotates without providing a lubricating oil pump.

In one embodiment of the present application, preferably, a circular central blocking plate 34 is further disposed in the oil storage barrel 30 at the junction of the cylindrical portion 31 and the conical portion 32, and the side surface of the central blocking plate 34 is fixedly connected to the end of each spiral flow guide plate 33; an inner conical plate 35 corresponding to the inner wall of the conical portion 32 is further arranged on one side, close to the oil outlet 301, of the central blocking plate 34, an oil through cavity is formed between the inner wall of the conical portion 32 and the inner conical plate 35, and a plurality of conical partition plates 36 are further arranged between the inner wall of the conical portion 32 and the inner conical plate 35, so that the spiral guide plate 33 can reliably convey lubricating oil to the oil outlet 301 when the oil storage barrel 30 rotates along with the winding barrel body 10. Preferably, the diameter of the inner edge of the spiral flow guide plate 33 is smaller than or equal to one third of the diameter of the cylindrical part 31, so that the spiral flow guide plate 33 can reliably convey the lubricating oil to the oil outlet when the oil storage barrel 30 rotates with the spool body 10.

As shown in fig. 10 and 11, in the hoist crane according to the embodiment of the present invention, a slidable trolley 110 is disposed on a main beam 100, a lifting motor and a hoist drum 120 are mounted on the trolley 110, a wire rope 101 is wound on the hoist drum 120, a hook pulley block 130 capable of lifting a heavy object is suspended on the wire rope, and the hoist drum is provided with the above-mentioned drum lubricating device.

In one embodiment of the present application, it is preferable that the hook block assembly 130 includes a fixed shaft 52 fixed to the pulley housing 51, the fixed shaft is mounted with the pulley 53, the wire rope is wound around the pulley 53, and the lower side of the pulley housing 51 is also mounted with the hook 54; the fixed shaft 52 is also provided with a pressure sensor and an encoder, the pressure sensor is used for detecting the load weight of the hook 54, and the encoder is used for detecting the rotation parameters of the pulley 53; the upper side of the pulley shell 51 is further provided with an electric control box 55, a data acquisition module, a control module, a wireless communication module and a power module are arranged in the electric control box 55, the data acquisition module is connected with the pressure sensor and the encoder, the wireless communication module and a crane control unit carry out signal transmission through wireless communication, the crane control unit calculates the running length of the steel wire rope 101 according to the number of turns of the pulley 53 and the diameter of the pulley 53 in the process of each lifting operation, calculates and records the abrasion condition of the steel wire rope during each lifting operation according to the product of the load weight of each lifting operation, the lifting operation time and the running length of the steel wire rope, and superposes and calculates the accumulated abrasion condition of the steel wire rope 101, so that the steel wire rope can be lubricated by controlling the on and off of the lubricating pipe through the electromagnetic valve. In this example, by arranging the pressure sensor, the encoder and the electronic control box 55 with the data acquisition module, the control module and the wireless communication module on the hook pulley block 130, the load weight, the number of turns of the pulley and the hoisting operation time of each hoisting operation can be acquired, and the crane control unit can calculate and record the abrasion condition of the steel wire rope in each hoisting operation, so that the abrasion condition of the steel wire rope can be estimated, and the monitoring of the abrasion condition of the steel wire rope can be realized; specifically, the fixed shaft 52 is fixed on the pulley housing 51 and can not rotate, the pulley 53 is rotatably mounted on the fixed shaft 52, and the mounting and fixing structure of the pressure sensor and the encoder is a conventional means in the field of data acquisition and is not described herein again; the innovation of the application lies in that the running length of the steel wire rope 101 is acquired through the pulley 53 on the hook pulley block 130 of the crane, particularly, in the prior art, the rotation parameters of the winding drum body are mostly acquired through the encoder arranged on the winding drum body, and as the steel wire rope wound on the winding drum body usually has multiple layers, the diameter of the winding drum body can be changed along with the winding and unwinding of the steel wire rope in the rotation process of the winding drum body, so that the running length of the steel wire rope can be calculated to obtain errors; in the present application, since the diameter of the pulley 53 is determined, the running length of the wire rope can be accurately measured by collecting the number of turns of the pulley 53. In the method, the abrasion degree of the steel wire rope during each lifting operation is calculated according to the product of three parameters, namely the load weight, the lifting operation time and the running length of the steel wire rope during each lifting operation. Preferably, the wear degree of the steel wire rope can be divided into multiple stages according to needs, and corresponding treatments such as early warning, lubrication, replacement and the like can be carried out according to the wear degrees of different stages.

As shown in fig. 12, experimental data about the pore size of the lubricating hole in the winding drum body is designed, the experimental site is indoor, the experimental environment temperature is 25 ℃, before the experiment, the oil distribution ring 20 is communicated with the oil storage barrel 30, the oil distribution ring 20 is ensured to be filled with lubricating oil, and then the oil supply pipeline between the oil storage barrel 30 and the oil distribution ring 20 is closed through the electromagnetic valve.

The experiment divide into static experiment and dynamic experiment, and static experiment, the dynamic experiment of the reel body of every kind of moist oil hole aperture go on respectively to avoid the influence of dynamic experiment to static experiment. Preferably, at least 2 experimental articles are selected from each reel body with the lubricating oil hole diameter, 1 is subjected to static test, the other 1 is subjected to dynamic test, and the static test and the dynamic test are carried out simultaneously.

When a static test is carried out, the winding drum is kept static, whether lubricating oil exists in a rope groove of the winding drum or not and the quantity of the lubricating oil are observed at intervals of 6 hours, and whether oil drips exist on the ground below the winding drum or not is observed; and observing whether lubricating oil exists in the rope groove of the winding drum and the amount of the lubricating oil after 6 hours, observing whether oil drips exist on the ground below the winding drum, recording the hole diameter of each lubricating hole for 4 times totally, and measuring the total experiment time for 24 hours.

When the dynamic test is carried out, the winding drum is kept static, after 6 hours, the winding drum body of the electric hoist winding drum is stopped after rotating at the speed of 100r/min for 30 seconds, and whether thrown oil drops exist on the ground below the winding drum body or not is observed; after 6 hours, the winding drum body of the electric hoist winding drum is rotated at the speed of 100r/min for 30 seconds again and then stopped, and whether thrown oil drops exist on the ground below the winding drum body or not is observed; a total of 4 observations were recorded, with a total of 24 hours of experimental time.

Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.