Double-drum synchronous lifting system
阅读说明：本技术 双卷筒同步提升系统 (Double-drum synchronous lifting system ) 是由 卢明立 刘祥军 刘攀军 吴忠毅 邱国东 于 2020-06-23 设计创作，主要内容包括：一种双卷筒同步提升系统,涉及建筑、工程机械、桩工机械等技术领域,包括双卷筒同步机构,双卷筒同步机构包括卷筒支架,在卷筒支架上设有水平设置的中心轴,在中心轴两端套装有左、右两个卷筒,在中心轴上对应套装有传动套,在两个传动套之间装有差速机构；差速机构包括分别固定安装在两个传动套上的左、右大锥齿轮,在左、右大锥齿轮之间设有安装在中心轴上的行星轮架,在行星轮架上装有两个同时与左、右大锥齿轮啮合的行星轮,两个行星轮通过转轴安装在行星轮架上,行星轮的转轴与中心轴垂直设置；中心轴的两端与驱动中心轴转动的动力输出机构相接；还包括三角梁。本发明能够实现双绳提升绳速实时动态平衡、同步提升或下放重物。(A double-drum synchronous lifting system relates to the technical field of buildings, engineering machinery, piling machinery and the like, and comprises a double-drum synchronous mechanism, wherein the double-drum synchronous mechanism comprises a drum support, a horizontally arranged central shaft is arranged on the drum support, a left drum and a right drum are sleeved at two ends of the central shaft, a transmission sleeve is correspondingly sleeved on the central shaft, and a differential mechanism is arranged between the two transmission sleeves; the differential mechanism comprises a left big bevel gear and a right big bevel gear which are respectively and fixedly arranged on two transmission sleeves, a planet wheel carrier arranged on the central shaft is arranged between the left big bevel gear and the right big bevel gear, two planet wheels which are simultaneously engaged with the left big bevel gear and the right big bevel gear are arranged on the planet wheel carrier, the two planet wheels are arranged on the planet wheel carrier through rotating shafts, and the rotating shafts of the planet wheels are vertical to the central shaft; the two ends of the central shaft are connected with a power output mechanism which drives the central shaft to rotate; also comprises a triangular beam. The invention can realize real-time dynamic balance of double-rope hoisting rope speed and synchronous hoisting or weight lowering.)
1. The utility model provides a synchronous hoist system of two reels which characterized in that: the double-reel synchronous mechanism comprises a reel bracket, a central shaft horizontally arranged is arranged on the reel bracket, a left reel and a right reel are sleeved at two ends of the central shaft, transmission sleeves fixedly connected with the two reels respectively are correspondingly sleeved on the central shaft, the two transmission sleeves are oppositely arranged and rotatably connected with the central shaft, and a differential mechanism is arranged between the two transmission sleeves;
the differential mechanism comprises a differential box body fixedly arranged on the winding drum bracket, a left big bevel gear and a right big bevel gear which are respectively and fixedly arranged on two transmission sleeves are arranged in the differential box body, a planet wheel carrier arranged on the central shaft is arranged between the left big bevel gear and the right big bevel gear, two planet wheels which are simultaneously meshed with the left big bevel gear and the right big bevel gear are arranged on the planet wheel carrier, the two planet wheels are arranged on the planet wheel carrier through rotating shafts, and the rotating shafts of the planet wheels are vertical to the central shaft; the two ends of the central shaft are connected with a power output mechanism which drives the central shaft to rotate;
the lifting mechanism further comprises a triangular beam matched with the double-drum synchronous mechanism for lifting.
2. The dual drum synchronous hoist system of claim 1, wherein: the triangular beam comprises a triangular beam body, two lifting holes used for being connected with the steel wire rope on the winding drum are formed in the upper portion of the triangular beam body, a lifting hole used for being connected with a drilling tool is formed in the middle of the two lifting holes in the lower portion of the triangular beam body, and the two lifting holes and the lifting hole form an isosceles triangle which is arranged with the lifting hole as the vertex.
3. The dual drum synchronous hoist system of claim 1, wherein: the power output mechanism adopts a motor reducer which is connected with the central shaft through a motor connecting sleeve, the motor reducer is arranged inside the winding drum and is arranged on the winding drum support through an end cover, and the end cover is rotationally connected with the winding drum through a bearing.
4. The dual drum synchronous hoist system of claim 1, wherein: the transmission sleeve and the differential box body, and the transmission sleeve and the central shaft are rotationally connected through bearings.
5. The dual drum synchronous hoist system of claim 1, wherein: the speed measuring device comprises a left large chain wheel and a right large chain wheel which are respectively installed on the two transmission sleeves, a left small chain wheel and a right small chain wheel which are matched with the left large chain wheel and the right large chain wheel are installed on the winding drum support, a rotating chain is installed between the left large chain wheel and the left small chain wheel and between the right large chain wheel and the right small chain wheel, and an encoder used for measuring the speed is installed on an installation shaft of the left small chain wheel and the right small chain wheel.
6. The dual drum synchronous hoist system of claim 1, wherein: the left and right winding drums are wound with steel wire ropes, the two steel wire ropes led out from the winding drums are correspondingly connected with the two lifting holes of the triangular beam after passing through the mast and the pulley assemblies arranged on the mast respectively, and the two lifting holes of the triangular beam are arranged in parallel with the two steel wire ropes between the pulleys on the mast.
7. The dual drum synchronous hoist system of claim 1, wherein: a rope pressing device is arranged on the winding drum bracket and comprises a rope pressing roller; the axis of rope pressing roller and the axis parallel arrangement of reel, the compression roller articulates there is the swing arm, the swing arm is articulated with the reel support, be equipped with the spring that makes rope pressing roller compress tightly the reel between swing arm and the reel support, the both ends of spring meet with swing arm, reel support respectively.
Technical Field
The invention relates to the technical fields of buildings, engineering machinery, piling machinery and the like, in particular to a double-drum synchronous lifting system.
Background
In fields such as building, engineering machine tool, piling machinery, often adopt two rope hoist lift system (or two hoist lift system) to realize the promotion or transfer of heavy object, compare in single rope hoist system, when promoting or transferring same load, two rope hoist system can use the wire rope that the diameter is littleer. The power source for such a double rope hoist system is most commonly hydraulically powered. The hydraulic double-rope hoisting system generally adopts two independent hydraulic loops to control two hoists, in order to keep two hoisting ropes as synchronous as possible, the rotating speeds of two winding drums are controlled by adopting parts such as a variable hydraulic motor pressure sensor and the like, so that the synchronous hoisting or lowering of the double ropes is realized as far as possible, but the ideal synchronous effect is difficult to achieve. Therefore, it is necessary to provide a lifting and lowering mechanism capable of realizing synchronous lifting and lowering of double ropes so as to meet the construction requirements.
Disclosure of Invention
The invention aims to solve the technical problem of providing a double-drum synchronous lifting system for dynamically balancing and synchronously lifting or lowering heavy objects in real time by double lifting ropes aiming at the defects of the prior art.
The invention aims to solve the technical problem by the following technical scheme, and the double-reel synchronous lifting system is characterized by comprising a double-reel synchronous mechanism, wherein the double-reel synchronous mechanism comprises a reel support, a central shaft horizontally arranged is arranged on the reel support, a left reel and a right reel are sleeved at two ends of the central shaft, transmission sleeves respectively fixedly connected with the two reels are correspondingly sleeved on the central shaft, the two transmission sleeves are oppositely arranged and rotatably connected with the central shaft, and a differential mechanism is arranged between the two transmission sleeves;
the differential mechanism comprises a differential box body fixedly arranged on the winding drum bracket, a left big bevel gear and a right big bevel gear which are respectively and fixedly arranged on two transmission sleeves are arranged in the differential box body, a planet wheel carrier arranged on the central shaft is arranged between the left big bevel gear and the right big bevel gear, two planet wheels which are simultaneously meshed with the left big bevel gear and the right big bevel gear are arranged on the planet wheel carrier, the two planet wheels are arranged on the planet wheel carrier through rotating shafts, and the rotating shafts of the planet wheels are vertical to the central shaft; the two ends of the central shaft are connected with a power output mechanism which drives the central shaft to rotate;
the lifting mechanism further comprises a triangular beam matched with the double-drum synchronous mechanism for lifting.
The technical problem to be solved by the present invention can be further realized by the following technical solution, in the above-mentioned double-drum synchronous lifting system: the triangular beam comprises a triangular beam body, two lifting holes used for being connected with the steel wire rope on the winding drum are formed in the upper portion of the triangular beam body, a lifting hole used for being connected with a drilling tool is formed in the middle of the two lifting holes in the lower portion of the triangular beam body, and the two lifting holes and the lifting hole form an isosceles triangle which is arranged with the lifting hole as the vertex.
The technical problem to be solved by the present invention can be further realized by the following technical solution, in the above-mentioned double-drum synchronous lifting system: the power output mechanism adopts a motor reducer which is connected with the central shaft through a motor connecting sleeve, the motor reducer is arranged inside the winding drum and is arranged on the winding drum support through an end cover, and the end cover is rotationally connected with the winding drum through a bearing.
The technical problem to be solved by the present invention can be further realized by the following technical solution, in the above-mentioned double-drum synchronous lifting system: the transmission sleeve and the differential box body, and the transmission sleeve and the central shaft are rotationally connected through bearings.
The technical problem to be solved by the present invention can be further realized by the following technical solution, in the above-mentioned double-drum synchronous lifting system: the speed measuring device comprises a left large chain wheel and a right large chain wheel which are respectively installed on the two transmission sleeves, a left small chain wheel and a right small chain wheel which are matched with the left large chain wheel and the right large chain wheel are installed on the winding drum support, a rotating chain is installed between the left large chain wheel and the left small chain wheel and between the right large chain wheel and the right small chain wheel, and an encoder used for measuring the speed is installed on an installation shaft of the left small chain wheel and the right small chain wheel.
The technical problem to be solved by the present invention can be further realized by the following technical solution, in the above-mentioned double-drum synchronous lifting system: the left and right winding drums are wound with steel wire ropes, the two steel wire ropes led out from the winding drums are correspondingly connected with the two lifting holes of the triangular beam after passing through the mast and the pulley assemblies arranged on the mast respectively, and the two lifting holes of the triangular beam are arranged in parallel with the two steel wire ropes between the pulleys on the mast.
The technical problem to be solved by the present invention can be further realized by the following technical solution, in the above-mentioned double-drum synchronous lifting system: a rope pressing device is arranged on the winding drum bracket and comprises a rope pressing roller; the axis of rope pressing roller and the axis parallel arrangement of reel, the compression roller articulates there is the swing arm, the swing arm is articulated with the reel support, be equipped with the spring that makes rope pressing roller compress tightly the reel between swing arm and the reel support, the both ends of spring meet with swing arm, reel support respectively.
Compared with the prior art, the invention has the beneficial effects that:
the differential mechanism is arranged in the two drums, the planet wheel is driven by the central shaft to revolve, the planet wheel drives the left and right big bevel gears with two sides meshed with the planet wheel, so that the two drums are driven to synchronously rotate, when the stress of the steel wire ropes wound on the two drums is balanced, the planet wheel does not relatively rotate with the left and right big bevel gears, when the stress of the steel wire ropes wound on the two drums is unbalanced, the planet wheel relatively rotates with the left and right big bevel gears, the rotating speed of the big bevel gear on the side with small stress of the steel wire rope is accelerated, the big bevel gear on the side with large stress of the steel wire rope can rotate in opposite directions, the planet wheel corrects the deviation, so that the stress of the steel wire ropes on the left drum and the right; through setting up differential mechanism, make two reels can realize dynamic balance, the automatic adjustment is balanced to the wire rope atress on two reels to realize promoting and descending in step to the heavy object.
Drawings
FIG. 1 is a schematic structural diagram of the present invention;
FIG. 2 is a schematic structural view of a double-drum synchronizing mechanism;
FIG. 3 is a top view of FIG. 2;
FIG. 4 is a cross-sectional view of the differential mechanism;
FIG. 5 is a triangular beam balance diagram;
FIG. 6 is a triangular beam imbalance force diagram;
fig. 7 is a schematic structural diagram of the rope pressing device.
In the figure: 1. the double-reel synchronous mechanism comprises a double-reel synchronous mechanism, 2 parts of a triangular beam, 3 parts of a reel support, 4 parts of a central shaft, 5 parts of a reel, 6 parts of a transmission sleeve, 7 parts of a large bevel gear, 8 parts of a planet wheel carrier, 9 parts of a planet wheel, 10 parts of a rotating shaft, 11 parts of a motor reducer, 12 parts of an end cover, 13 parts of a large chain wheel, 14 parts of a chain, 15 parts of an encoder, 16 parts of a steel wire rope, 17 parts of a mast, 18 parts of a pulley assembly, 19 parts of a motor connecting sleeve, 20 parts of a differential box body, 21 parts of a rope pressing device, 22 parts of a rope pressing.
Detailed Description
The following further describes particular embodiments of the present invention to facilitate further understanding of the present invention by those skilled in the art, and does not constitute a limitation to the right thereof.
[ example 1 ]
Referring to fig. 1, and fig. 2 and 3, a double-drum synchronous lifting system comprises a double-drum synchronous mechanism 1, wherein the double-drum synchronous mechanism 1 comprises a drum support 3, a horizontally arranged central shaft 4 is arranged on the drum support 3, a left drum 5 and a right drum 5 are sleeved at two ends of the central shaft 4, a transmission sleeve 6 fixedly connected with the two drums 5 is correspondingly sleeved on the central shaft 4, the two transmission sleeves 6 are oppositely arranged and rotatably connected with the central shaft 4, and a differential mechanism is arranged between the two transmission sleeves 6;
referring to fig. 4, the differential mechanism includes a differential case 20 fixedly mounted on the reel holder 3, a left large bevel gear 7 and a right large bevel gear 7 fixedly mounted on the two transmission sleeves 6 respectively are arranged in the differential case 20, a planet carrier 8 mounted on the central shaft 4 is arranged between the left large bevel gear 7 and the right large bevel gear 7, two planet wheels 9 simultaneously engaged with the left large bevel gear 7 and the right large bevel gear 7 are mounted on the planet carrier 8, the two planet wheels 9 are mounted on the planet carrier 8 through a rotating shaft 10, and the rotating shaft 10 of the planet wheels 9 is perpendicular to the central shaft 4; two ends of the central shaft 4 are connected with a power output mechanism which drives the central shaft 4 to rotate;
the lifting mechanism further comprises a triangular beam 2 matched with the double-drum synchronous mechanism 1 for lifting.
The triangular beam 2 comprises a triangular beam 2 body, two lifting holes used for being connected with a steel wire rope 16 on the winding drum 5 are formed in the upper portion of the triangular beam 2 body, a lifting hole used for being connected with a drilling tool is formed in the middle of the two lifting holes in the lower portion of the triangular beam 2 body, and the two lifting holes and the lifting hole form an isosceles triangle which is arranged with the lifting hole as the vertex. The triangular beam 2 can be used for observing the stress condition of the steel wire ropes 16 wound on the two winding drums 5 in real time, referring to fig. 5 and 6, in the drawing, P is the gravity of the lifted weight, F1 is the traction force of the steel wire ropes 16 on the left winding drum 5, F2 is the traction force of the steel wire ropes 16 on the right winding drum 5, and L1 and L2 are the moment arms from the stress points of the left and right steel wire ropes 16 to the gravity center axis of the weight respectively. Fig. 4 shows that when the double drum 5 is lifted or lowered in a normal state, the two lifting holes of the triangular beam 2 are horizontal and are evenly stressed, and when L1= L2, the traction force of the wire rope 16 on the left and right drums 5 is F1= F2= P/2. Fig. 5 shows that when the double winding drums 5 are lifted or lowered in an abnormal state, the triangular beam 2 is inclined, the stress on the two lifting holes is unbalanced, and at this time, L1 is not equal to L2, and the traction force F2 of the wire rope 16 on the left winding drum 5 is larger than F1.
The power output mechanism adopts a motor reducer 11, the motor reducer 11 is connected with the central shaft 4 through a motor connecting sleeve 19, the motor reducer 11 is arranged inside the winding drum 5, the motor reducer 11 is arranged on the winding drum support 3 through an end cover 12, and the end cover 12 is rotatably connected with the winding drum 5 through a bearing.
The transmission sleeve 6 is rotatably connected with the differential box body 20 and the transmission sleeve 6 is rotatably connected with the central shaft 4 through bearings.
Still include the speed sensor, the speed sensor is including installing left and right big sprocket 13 on two driving sleeves 6 respectively, install on reel support 3 with left and right big sprocket 13 complex left and right small sprocket, install
The left and right winding drums 5 are wound with steel wire ropes 16, the two steel wire ropes 16 led out from the winding drums 5 are correspondingly connected with two lifting holes of the triangular beam 2 after passing through a mast 17 and pulley assemblies 18 arranged on the mast 17 respectively, and the two lifting holes of the triangular beam 2 are arranged in parallel with the two steel wire ropes 16 between the pulleys on the mast 17.
A rope pressing device 21 is mounted on the reel support 3, and referring to fig. 7, the rope pressing device 21 comprises a
The working principle is as follows:
the motor reducer 11 outputs power to the central shaft 4 to drive the central shaft 4 to rotate, the planet wheel carrier 8 arranged on the central shaft 4 drives the two planet wheels 9 to revolve around the central shaft 4, the left and right big bevel gears 7 meshed with the planet wheels 9 are driven wheels, the left and right big bevel gears 7 synchronously rotate around the central shaft 4 under the driving of the planet wheels 9, the transmission sleeve 6 used for installing the left and right big bevel gears 7 is also fixedly connected with the left and right reels 5, and the left and right big bevel gears 7 drive the left and right reels 5 to synchronously rotate through the transmission sleeve 6, so that the steel wire ropes 16 wound on the reels 5 are simultaneously wound and unwound.
The stress conditions of the two steel wire ropes 16 on the two winding drums 5 can be observed in real time through the triangular beam 2, when the triangular beam 2 is in a state shown in fig. 4, static analysis shows that under the condition that the rope winding radiuses are the same, the two steel wire ropes 16 on the two winding drums 5 are stressed equally, the two winding drums 5 do not rotate relatively, namely the two winding drums 5 lift or put down heavy objects synchronously, and the left and right bevel pinions 7 and the two planet wheels 9 do not rotate relatively; when the triangular beam 2 is in the state shown in fig. 5, it can be known from statics analysis that under the condition that the rope winding radiuses are the same, the stress of the two steel wire ropes 16 on the two winding drums 5 is unequal, the moments generated by the two steel wire ropes 16 on the two winding drums 5 are also unequal, the two winding drums 5 can rotate relatively, namely, the left and right large bevel gears 7 rotate relatively, the rotating speed of the large bevel gear 7 on the side with small stress of the steel wire rope 16 is accelerated, the large bevel gear 7 on the side with large stress of the steel wire rope 16 can rotate in the opposite direction, the planet wheel 9 corrects the deviation, so that the stress of the steel wire ropes 16 on the left and right winding drums 5 is equal, and. No matter how the external factors change, the torques of the two winding drums 5 can be dynamically balanced, and synchronous lifting and lowering are realized.
The invention can be widely applied to construction engineering machinery and drilling machinery, and realizes the synchronous lifting and weight lowering of double ropes.
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