Automatic tension balancing system for traction rope of elevator car
阅读说明：本技术 电梯轿厢曳引绳张力自动平衡系统 (Automatic tension balancing system for traction rope of elevator car ) 是由 郑世云 唐川东 杨豪 王成华 李彬 于 2019-11-27 设计创作，主要内容包括：本发明公开了一种电梯轿厢曳引绳张力自动平衡系统,其特征在于,包括悬挂上盖和悬挂下盖；在悬挂上盖上绕其一周分布有数个上定滑轮,悬挂下盖对应上定滑轮的位置设下定滑轮；在悬挂下盖上设有数个悬吊动滑轮和收绳动滑轮,悬吊动滑轮和收绳动滑轮交替分布于相邻两下定滑轮之间；悬挂下盖开设有条形孔,所述悬吊动滑轮和收绳动滑轮通过支撑轴与悬挂下盖的条形孔滑动配合相邻；上定滑轮与下定滑轮紧贴在一起,使上定滑轮与下定滑轮的轮槽配合形成一线孔；还包括呈环形的悬吊绳,其位于上定滑轮与下定滑轮配合形成的线孔内,所述悬吊动滑轮和收绳动滑轮均悬挂在悬吊绳的上侧。本发明达到了悬吊绳上的各处张力平衡的目的,减少悬吊绳的磨损。(The invention discloses an automatic tension balancing system for a hoisting rope of an elevator car, which is characterized by comprising a suspension upper cover and a suspension lower cover; a plurality of upper fixed pulleys are distributed on the upper suspension cover around the upper suspension cover, and the lower fixed pulleys are arranged on the lower suspension cover at positions corresponding to the upper fixed pulleys; a plurality of hanging movable pulleys and rope collecting movable pulleys are arranged on the hanging lower cover, and the hanging movable pulleys and the rope collecting movable pulleys are alternately distributed between two adjacent lower fixed pulleys; the hanging lower cover is provided with a strip-shaped hole, and the hanging movable pulley and the rope collecting movable pulley are in sliding fit and are adjacent to the strip-shaped hole of the hanging lower cover through a support shaft; the upper fixed pulley and the lower fixed pulley are tightly attached together, so that the wheel grooves of the upper fixed pulley and the lower fixed pulley are matched to form a line hole; the rope still suspends in midair including being annular, it is located the wire hole that fixed pulley and lower fixed pulley cooperation formed, suspend in midair the movable pulley and receive the rope movable pulley and all hang the upside that suspends in midair the rope. The invention achieves the purpose of balancing the tension at each position on the suspension rope and reduces the abrasion of the suspension rope.)
1. An elevator car hoist rope tension automatic balancing system, comprising:
the suspension upper cover and the suspension lower cover are connected together through a connecting bolt, and the side walls of the suspension upper cover and the suspension lower cover are of double-layer structures; a plurality of upper fixed pulleys are uniformly distributed on the upper suspension cover around the periphery of the upper suspension cover, lower fixed pulleys are arranged on the lower suspension cover at positions corresponding to the upper fixed pulleys, and the upper fixed pulleys and the lower fixed pulleys are respectively positioned between the inner layer and the outer layer of the upper suspension cover and the lower suspension cover and correspondingly connected with the inner layer and the outer layer of the upper suspension cover and the lower suspension cover through support shafts; moreover, the upper fixed pulley and the lower fixed pulley are tightly attached together, so that the wheel grooves of the upper fixed pulley and the lower fixed pulley are matched to form a line hole;
a plurality of hanging movable pulleys and rope collecting movable pulleys are also arranged on the hanging lower cover, and the hanging movable pulleys and the rope collecting movable pulleys are alternately distributed between two adjacent lower fixed pulleys; the inner layer and the outer layer of the suspension lower cover are respectively provided with a strip-shaped hole vertically penetrating through the upper side and the lower side of the suspension lower cover at the position corresponding to the suspension movable pulley and the rope collection movable pulley, and the suspension movable pulley and the rope collection movable pulley are connected with the strip-shaped holes at the corresponding positions of the inner layer and the outer layer of the suspension lower cover in a sliding fit manner through a support shaft;
the hanging rope is annular and is positioned between the upper fixed pulley and the lower fixed pulley, the wire hole formed by matching the upper fixed pulley and the lower fixed pulley is used for limiting, the perimeter of the hanging rope is larger than the perimeters of the upper hanging cover and the lower hanging cover, and the hanging movable pulley and the rope retracting movable pulley are both hung on the upper side of the hanging rope;
a rope head component is arranged at the lower side of the suspension movable pulley; an adjusting screw is arranged on the lower side of the rope-collecting movable pulley, and the upper end of the adjusting screw is connected with two ends of a supporting shaft of the rope-collecting movable pulley through a U-shaped frame; a protective steel plate is horizontally arranged below the suspended lower cover, a rope hole is respectively formed in the protective steel plate at the position corresponding to each rope head component, and the lower end of the adjusting screw rod penetrates through the rope hole and then is connected with a locking nut.
2. The automatic tension balancing system for elevator car traction ropes of claim 1, wherein the rope head assembly comprises a connecting seat, a rope head fixing seat and a cushion pad; the connecting seat is U-shaped, and its both ends upwards extend and link to each other with the both ends of suspending in midair the back shaft of movable pulley, and rope fastening seat and the downside fixed connection of connecting seat, the blotter is two to with rope fastening seat both sides fixed connection, and be located the bar hole that hangs the inlayer of lower cover and the corresponding position of inlayer respectively.
3. The automatic elevator car hoist rope tension balancing system of claim 2, wherein the cushion pad is made of an elastic material and a cushion spring is further disposed inside the cushion pad.
4. The automatic tension balancing system for elevator car traction ropes according to claim 1, wherein a rope breaking protection switch is further disposed below the protective steel plate, the rope breaking protection switch has a button, and the button is disposed upward, and the rope breaking protection switch is used for electrically connecting with the speed limiter.
5. The elevator car hoist rope tension automatic balancing system of claim 1, wherein the suspended upper cover has a top plate and the suspended lower cover has a bottom plate; a screw rod of the connecting bolt penetrates through the top plate and the bottom plate and then is connected with the fastening nut; through holes for the rope head assembly and the adjusting screw to pass through are formed in the chassis corresponding to the positions of the rope head assembly and the adjusting screw respectively.
6. The automatic tension balancing system for elevator car ropes of claim 1, wherein the lower side of the upper fixed sheave is flush with the lower side of the side wall of the suspension upper cover, and the upper side of the lower fixed sheave is flush with the upper side of the side wall of the suspension lower cover.
Technical Field
The invention belongs to the technical field of elevator suspension, and particularly relates to an automatic tension balancing system for a traction rope of an elevator car.
Background
To current traction elevator suspension mode, the suspension tension that different wire rope (steel band) received is different, and the condition of wearing and tearing appears easily in the wire rope (steel band) that receives big suspension tension for a long time, leads to falling of elevator car, in addition, considers that wire rope (steel band) self can have atress elastic deformation, condition such as expend with heat and contract with cold, will be transferred suitable length by the wire rope (steel band) of dimension maintainer elevator at every other period, adjusts suspension tension to reduce the wearing and tearing of wire rope (steel band).
However, in the conventional technology, the car needs to be lifted, so that the counterweight frame is supported in a pit in a balanced manner, the length of the steel wire rope (steel belt) can be adjusted, the whole process consumes large manpower and material resources, and the implementation is inconvenient.
Therefore, it is a technical problem to be solved by those skilled in the art how to provide an automatic tension balancing system for a traction rope of an elevator car, which has a simple structure, is convenient for tightening a steel wire rope and realizes automatic tension balancing.
Disclosure of Invention
Aiming at the defects of the prior art, the technical problems to be solved by the invention are as follows: the automatic tension balancing system for the elevator car traction rope has the advantages that the structure is simple, the steel wire rope is conveniently tightened, and the automatic tension balancing is realized.
In order to solve the technical problems, the invention adopts the following technical scheme:
an elevator car hoist rope tension automatic balancing system, comprising:
the suspension upper cover and the suspension lower cover are connected together through a connecting bolt, and the side walls of the suspension upper cover and the suspension lower cover are of double-layer structures; a plurality of upper fixed pulleys are uniformly distributed on the upper suspension cover around the periphery of the upper suspension cover, lower fixed pulleys are arranged on the lower suspension cover at positions corresponding to the upper fixed pulleys, and the upper fixed pulleys and the lower fixed pulleys are respectively positioned between the inner layer and the outer layer of the upper suspension cover and the lower suspension cover and correspondingly connected with the inner layer and the outer layer of the upper suspension cover and the lower suspension cover through support shafts; moreover, the upper fixed pulley and the lower fixed pulley are tightly attached together, so that the wheel grooves of the upper fixed pulley and the lower fixed pulley are matched to form a line hole;
a plurality of hanging movable pulleys and rope collecting movable pulleys are also arranged on the hanging lower cover, and the hanging movable pulleys and the rope collecting movable pulleys are alternately distributed between two adjacent lower fixed pulleys; the inner layer and the outer layer of the suspension lower cover are respectively provided with a strip-shaped hole vertically penetrating through the upper side and the lower side of the suspension lower cover at the position corresponding to the suspension movable pulley and the rope collection movable pulley, and the suspension movable pulley and the rope collection movable pulley are connected with the strip-shaped holes at the corresponding positions of the inner layer and the outer layer of the suspension lower cover in a sliding fit manner through a support shaft;
the hanging rope is annular and is positioned between the upper fixed pulley and the lower fixed pulley, the wire hole formed by matching the upper fixed pulley and the lower fixed pulley is used for limiting, the perimeter of the hanging rope is larger than the perimeters of the upper hanging cover and the lower hanging cover, and the hanging movable pulley and the rope retracting movable pulley are both hung on the upper side of the hanging rope;
a rope head component is arranged at the lower side of the suspension movable pulley; an adjusting screw is arranged on the lower side of the rope-collecting movable pulley, and the upper end of the adjusting screw is connected with two ends of a supporting shaft of the rope-collecting movable pulley through a U-shaped frame; a protective steel plate is horizontally arranged below the suspended lower cover, a rope hole is respectively formed in the protective steel plate at the position corresponding to each rope head component, and the lower end of the adjusting screw rod penetrates through the rope hole and then is connected with a locking nut.
In the application, the different tension of the suspension ropes is embodied as different horizontal heights of the suspension movable pulleys; the self-balancing assembly of the self-balancing device is connected by the suspension rope passing around the fixed pulley, and the known principle that the stress on two sides of the fixed pulley is the same can be obtained: the stress of the suspension ropes at the positions of the suspension sliding pulleys can be the same, so that the aim of balancing the tension of each part on the suspension ropes is fulfilled, and the abrasion of the suspension ropes is reduced; in addition, the self-balancing assembly is circularly arranged around the suspension column, so that the positions of the suspension turning can be selected by 360 degrees, and a plurality of suspension units can be suspended simultaneously; when the suspension rope is broken, the suspension movable pulley is supported by the protective steel plate, so that the safety of the elevator is guaranteed.
After the elevator operation a period, the suspension rope must have a certain amount of extension, uses the elevator car towline tension automatic balancing system of this application can directly use the method of screwing the nut: the nut at the lower end of the rope-collecting movable pulley is unscrewed, the rope-collecting movable pulley moves upwards, and the suspended movable pulley moves upwards under the action of the lower fixed pulley, so that the purpose of collecting the rope is achieved.
Furthermore, the rope end assembly comprises a connecting seat, a rope end fixing seat and a cushion pad; the connecting seat is U-shaped, two ends of the connecting seat extend upwards and are connected with two ends of a supporting shaft suspending the movable pulley in a hanging mode, the rope end fixing seat is fixedly connected with the lower side of the connecting seat, the two buffering cushions are fixedly connected with two sides of the rope end fixing seat and are respectively located in the strip-shaped holes in the corresponding positions of the inner layer and the outer layer of the hanging lower cover
Still further, the buffer pad is made of an elastic material, and a buffer spring is arranged in the buffer pad.
Like this, suspend in midair and expect that the back is disconnected, all fag end subassemblies are whole to be pressed on the protection steel sheet, because the blotter is made by elastic material and is provided with buffer spring in the blotter, the blotter has increased area of contact, can avoid fag end subassembly to pull through the risk that disconnected rope protection device dropped.
Furthermore, a rope breaking protection switch is further arranged below the protection steel plate, the rope breaking protection switch is provided with a button, the button is arranged upwards, and the rope breaking protection switch is used for being electrically connected with the speed limiter.
Like this, in the twinkling of an eye that rope end subassembly dropped, the deformation of certain degree can take place for the protection steel sheet on the disconnected rope protection switching device, and this deformation contact rope breakage protection switching device's button makes the overspeed governor move, arouses the action of safety tongs, and the danger that the car falls is avoided to duplicate protection elevator.
Furthermore, the suspension upper cover is provided with a top plate, the suspension lower cover is provided with a bottom plate, and a screw rod of the connecting bolt penetrates through the top plate and the bottom plate and then is connected with a fastening nut; through holes for the rope head assembly and the adjusting screw to pass through are formed in the chassis corresponding to the positions of the rope head assembly and the adjusting screw respectively.
Thus, the suspension upper cover and the suspension lower cover are fixed.
Further, the lower side of the upper fixed pulley is flush with the lower side of the side wall of the suspension upper cover, and the upper side of the lower fixed pulley is flush with the upper side of the side wall of the suspension lower cover.
Drawings
Fig. 1 is a schematic view showing a structure of an automatic tension balancing system for a hoist rope of an elevator car according to the present invention in a normal operation.
Fig. 2 is a schematic structural view of the automatic tension balancing system for elevator car ropes in a state of rope breakage protection according to the present invention.
Fig. 3 is a schematic view showing a construction of the automatic tension balancing system for elevator car traction ropes according to the present invention when tightened.
Fig. 4 is a schematic structural view of the suspension lower cover of the present invention.
Fig. 5 is a schematic structural view of the suspension upper cover of the present invention.
Fig. 6 is a schematic structural view of a head assembly of the present invention.
The reference numbers illustrate: suspending the
Detailed Description
The invention will be further explained with reference to the drawings and the embodiments.
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