Rope breakage protection device

Abstract

The rope breakage protection device comprises a rope hitch plate, a rope hitch assembly and a detection assembly, the rope hitch assembly comprises a steel wire rope pull rod, an elastic piece, a flat gasket and a locking piece, and the steel wire rope pull rod penetrates through the rope hitch plate and is used for being connected with a steel wire rope; the elastic piece, the flat gasket and the locking piece are sequentially installed on the steel wire rope pull rod so that the elastic piece can be assembled between the rope hitch plate and the flat gasket in a pre-compression mode. The detection assembly comprises a support, a detection plate and a limiting switch, the support is fixedly installed on the rope hitch plate, the detection plate is rotationally installed on the support, position interference is formed between the detection plate and the flat gasket, and the limiting switch is located on the side, facing the rope hitch plate, of the detection plate and fixedly connected with the support; and the detection plate can swing relative to the bracket under the pushing of the flat gasket, so that one end of the detection plate is pressed downwards and triggers the limiting switch. On one hand, errors can be reduced, and detection timeliness and accuracy are improved; and on the other hand, false triggering of the limit switch in the subsequent maintenance process is also prevented.

Description

Technical Field

[0001] The utility model belongs to the technical field related to elevators, and particularly relates to a rope breakage protection device. Background Art

[0002] In modern urban life, elevators, as vertical transportation means, are widely used in public places such as residential buildings, commercial buildings, hospitals, schools, etc., greatly facilitating people's daily travel. However, a series of safety problems also accompany the use of elevators. Among them, the steel wire rope, as the suspension device of the elevator, if the safety of the steel wire rope is ignored, the consequences caused by the breakage of the steel wire rope during the operation of the elevator will be unimaginable. Therefore, it is particularly necessary to design a rope breakage protection device for detecting whether the steel wire rope breaks, and according to the feedback signal generated after the detection by the rope breakage protection device, to control the disconnection of the elevator safety circuit and stop the entire elevator to ensure the safety of the elevator and passengers. Content of the Utility Model

[0003] In view of this, it is necessary to provide a rope breakage protection device that is not affected by the tension adjustment of the steel wire rope and can detect whether the steel wire rope breaks in a timely and accurate manner.

[0004] A rope breakage protection device is applied to an elevator; the rope breakage protection device includes:

[0005] A rope socket plate;

[0006] A rope socket assembly, including a steel wire rope pull rod, an elastic member, a flat washer, and a locking member. The steel wire rope pull rod penetrates through the rope socket plate and is used for connecting the steel wire rope. The elastic member, the flat washer, and the locking member are sequentially installed on the steel wire rope pull rod, so that the elastic member is assembled between the rope socket plate and the flat washer in a pre-compressed manner;

[0007] A detection assembly, including a bracket, a detection plate, and a limit switch. The bracket is fixedly installed on the rope socket plate. The detection plate is rotatably installed on the bracket and forms a position interference with the flat washer. The limit switch is located on the side of the detection plate facing the rope socket plate and is fixedly connected to the bracket. Moreover, when the steel wire rope breaks, the elastic force of the elastic member can drive the flat washer to push against the detection plate to swing relative to the bracket, so that one end of the detection plate is pressed down to trigger the limit switch.

[0008] It can be understood that since the triggering of the limit switch by the detection plate is achieved by the pre-compressed elastic member pushing through the flat washer, on the one hand, the triggering of the limit switch can be made independent of the tension adjustment of the wire rope during subsequent maintenance, which has the effect of reducing errors and improving the timeliness and accuracy of detection; on the other hand, it can also prevent the accidental triggering of the limit switch during subsequent maintenance; at the same time, since the limit switch is arranged on one side of the detection plate facing the rope head plate and is assembled to the bracket together with the detection plate, and the limit switch is triggered by the downward pressure of the detection plate, this can not only simplify the structure, but also the assembly of the limit switch does not require additional space.

[0009] In one embodiment, a through hole is formed on the detection plate, the outer diameter of the flat washer is larger than the aperture of the through hole, and the outer diameter of the locking member is smaller than the aperture of the through hole;

[0010] Wherein, the through hole is correspondingly arranged with the wire rope pull rod, the locking member on the wire rope pull rod can pass through the corresponding through hole and be exposed on the detection plate, and the flat washer can push the detection plate under the extrusion of the elastic member so that the detection plate triggers the limit switch.

[0011] It can be understood that through the above structural arrangement, the use requirement that the detection plate can trigger the limit switch under the push of the flat washer can be met.

[0012] In one embodiment, the bracket includes a base and a height adjustment plate, and the height adjustment plate can be fixedly installed on the rope head plate through the base;

[0013] The height adjustment plate abuts against the detection plate upward to support the detection plate, and the height adjustment plate can be rotatably connected to the detection plate through a rotating shaft;

[0014] The limit switch is fixedly installed on the height adjustment plate.

[0015] It can be understood that through the above structural arrangement, the assembly connection of the detection plate and the limit switch on the bracket is specifically realized.

[0016] In one embodiment, the height adjustment plate includes a first mounting plate and a second mounting plate, and the first mounting plate and the second mounting plate are arranged opposite to each other;

[0017] A plurality of bending plates are formed on the detection plate, and the plurality of bending plates are arranged between the first mounting plate and the second mounting plate, and the rotating shaft penetrates through the first mounting plate, the plurality of bending plates and the second mounting plate;

[0018] The limit switch is arranged between the first mounting plate and the second mounting plate and is fixedly connected to the first mounting plate and / or the second mounting plate.

[0019] It can be understood that through the above structural arrangement, the height adjustment plate can be assembled with the detection plate and the limit switch based on the first mounting plate and the second mounting plate, which can reduce the overall volume of the rope breaking protection device.

[0020] In one embodiment, in the thickness direction of the rope head plate, the mounting position of the height adjustment plate on the base can be adjusted;

[0021] A first waist-shaped hole is formed on the height adjustment plate, and a second waist-shaped hole is formed on the base. The second waist-shaped hole communicates with the first waist-shaped hole. Wherein, the rope breaking protection device further includes a first locking member and a first locking stop. The first locking member passes through the first waist-shaped hole and the second waist-shaped hole and is screwed to the first locking stop to fix the height adjustment plate to the base.

[0022] It can be understood that by adjusting the mounting position of the height adjustment plate on the base, the distance between the detection plate and the flat pad can be adjusted, which can meet the use requirement of adjusting the pre-compression amount of the elastic member after the steel wire rope is tensioned during subsequent maintenance, so as to further ensure the timeliness and accuracy of the steel wire rope breakage detection when the rope breaking protection device works.

[0023] In one embodiment, in the thickness direction of the rope head plate, the mounting position of the limit switch on the height adjustment plate can be adjusted;

[0024] A third waist-shaped hole is formed on the height adjustment plate, and a through hole is formed on the limit switch. The through hole communicates with the third waist-shaped hole. Wherein, the rope breaking protection device further includes a second locking member and a second locking stop. The second locking member passes through the third waist-shaped hole and the through hole and is screwed to the second locking stop to fix the limit switch to the height adjustment plate.

[0025] It can be understood that by adjusting the mounting position of the limit switch on the height adjustment plate, the distance between the limit switch and the detection plate can be adjusted, which can ensure that the limit switch is triggered when the detection plate swings under the push of the flat pad, so as to further ensure the timeliness and accuracy of the steel wire rope breakage detection when the rope breaking protection device works.

[0026] In one embodiment, the base includes a first plate body and a second plate body, and the second plate body is vertically arranged relative to the first plate body;

[0027] Wherein, the first plate body abuts against the rope end plate and is fixedly connected to the rope end plate, and the second plate body is fixedly connected to the height adjustment plate.

[0028] It can be understood that through the above structural arrangement, the height adjustment plate is vertically assembled on the rope end plate through the base, which has the effect of simplifying the structure.

[0029] In one embodiment, the first plate body is connected to the rope end plate by welding.

[0030] It can be understood that the assembly connection of the base on the rope end plate is realized by welding, which can simplify the assembly between the base and the rope end plate and facilitate the assembly of the base to the rope end plate.

[0031] In one embodiment, the end of the rotating shaft after passing through the first mounting plate, multiple bending plates and the second mounting plate can be plugged and limited by a plug pin.

[0032] It can be understood that through the above structural arrangement, the rotating shaft can be assembled and limited by a plug pin, which can meet the use requirements of assembling the rotating shaft to the first mounting plate, multiple bending plates and the second mounting plate.

[0033] In one embodiment, the rope end assembly is arranged on one side of the bracket, and one end of the detection plate for pressing down and triggering the limit switch and the limit switch are arranged on the other side of the bracket.

[0034] It can be understood that through the above structural arrangement, the rope end assembly, the detection plate and the limit switch can be installed on both sides with the bracket as the boundary.

[0035] Due to the application of the above technical solution, the present utility model has the following advantages compared with the prior art:

[0036] For the rope break protection device claimed in this application, since the triggering of the limit switch by the detection plate is realized by the pre-compressed elastic member pushing through the flat washer, on the one hand, the triggering of the limit switch can be made not affected by the tension adjustment of the steel wire rope during subsequent maintenance, which has the effect of reducing errors and improving the timeliness and accuracy of detection; on the other hand, it also prevents the accidental triggering of the limit switch during subsequent maintenance; at the same time, since the limit switch is arranged on the side of the detection plate facing the rope end plate and is assembled to the bracket together with the detection plate, this not only simplifies the structure, but also the assembly of the limit switch does not require additional space occupation. Description of the Drawings

[0037] To more clearly illustrate the technical solutions in the embodiments of the present application or in the prior art, the following will briefly introduce the accompanying drawings required for the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other accompanying drawings can also be obtained based on these drawings.

[0038] Figure 1 A perspective view of the rope breaking protection device provided by the present application.

[0039] Figure 2 A front view of the rope breaking protection device provided by the present application.

[0040] Figure 3 A left view of the rope breaking protection device provided by the present application.

[0041] Figure 4 An exploded assembly view of the rope end plate and the detection component in the present application.

[0042] Reference numerals: 100, rope breaking protection device; 10, rope end plate; 20, rope end assembly; 21, wire rope pull rod; 22, elastic member; 23, flat washer; 24, locking member; 25, gasket; 30, detection component; 31, bracket; 311, base; 3111, first plate body; 3112, second plate body; 312, height adjustment plate; 3121, first mounting plate; 3122, second mounting plate; 313, rotating shaft; 3131, pin; 32, detection plate; 321, through hole; 322, bending plate; 33, limit switch; 331, through hole; 301, first kidney-shaped hole; 302, second kidney-shaped hole; 303, third kidney-shaped hole; 41, first locking member; 42, first locking stop; 43, second locking member; 44, second locking stop. Detailed implementation manners

[0043] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, rather than all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the protection scope of the present utility model.

[0044] It should be noted that when an element is referred to as being "provided on" another element, it can be directly provided on the other element or there may also be an intermediate element. When an element is considered to be "provided on" another element, it can be directly provided on the other element or there may be an intermediate element at the same time. When an element is considered to be "fixed to" another element, it can be directly fixed to the other element or there may be an intermediate element at the same time.

[0045] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which this utility model belongs. The terms used in the description of this utility model are only for the purpose of describing specific embodiments and are not intended to limit this utility model. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0046] The rope-breaking protection device 100 claimed in this application is applied to an elevator and is used to detect the breakage of a steel wire rope (not shown in the figure), so that the elevator can control the disconnection of the safety circuit through the detection structure of the rope-breaking protection device to stop the elevator from running. Here, the steel wire rope is the suspension device of the elevator.

[0047] As Figures 1 to 4 shown, the rope-breaking protection device 100 provided in this application includes a rope head plate 10, a rope head assembly 20 and a detection assembly 30. The rope head assembly 20 includes a steel wire rope pull rod 21, an elastic member 22, a flat washer 23 and a locking member 24. The steel wire rope pull rod 21 passes through the rope head plate 10 and is used to connect the steel wire rope. The elastic member 22, the flat washer 23 and the locking member 24 are sequentially installed on the steel wire rope pull rod 21, so that the elastic member 22 is assembled between the rope head plate 10 and the flat washer 23 in a pre-compressed manner. The detection assembly 30 includes a bracket 31, a detection plate 32 and a limit switch 33. The bracket 31 is fixedly installed on the rope head plate 10. The detection plate 32 is rotatably installed on the bracket 31 and forms a position interference with the flat washer 23. The limit switch 33 is located on the side of the detection plate 32 facing the rope head plate 10 and is fixedly connected to the bracket 31. Moreover, when the steel wire rope breaks, the elastic force of the elastic member 22 can drive the flat washer 23 to push against the detection plate 32 to swing relative to the bracket 31, so that one end of the detection plate 32 is pressed down to trigger the limit switch 33. Here, the position interference formed between the detection plate 32 and the flat washer 23 specifically means that the flat washer 23 can push against the detection plate 32 during the movement process. It should be noted that the number of the rope head assemblies 20 in the rope-breaking protection device 100 of this application is configured as multiple groups, and the number and arrangement positions of the rope head assemblies 20 can be specifically set according to the use requirements of the elevator and will not be elaborated herein.

[0048] It can be understood that the triggering of the limit switch 33 by the detection plate 32 is achieved by the pre-compressed elastic member 22 pushing against the flat washer 23. On the one hand, this can make the triggering of the limit switch 33 not affected by the tension adjustment of the wire rope during subsequent maintenance, which has the effect of reducing errors and improving the timeliness and accuracy of detection; on the other hand, it also prevents the accidental triggering of the limit switch 33 during subsequent maintenance; at the same time, since the limit switch 33 is arranged on one side of the detection plate 32 facing the rope head plate 10 and is assembled to the bracket 31 together with the detection plate 32, this can not only simplify the structure, but also the assembly of the limit switch 33 does not require additional space occupancy.

[0049] It should be noted that since the wire rope will become loose after being stressed for a long time, during the subsequent maintenance of the elevator, it is necessary to adjust the distance of the wire rope pull rod 21 extending out of the rope head plate 10. Specifically, the position of the locking member 24 installed on the wire rope pull rod 21 can be adjusted to tension the wire rope. It can be understood that before and after the adjustment of the locking member 24 on the wire rope pull rod 21, the tension of the wire rope on the wire rope pull rod 21 is always the same, that is, the deformation amount of the elastic member 22 when it is pre-compressed always remains the same, so that the triggering of the limit switch 33 will not be affected by the tension adjustment of the wire rope during maintenance. Here, the number of the locking members 24 is configured to be two, and specifically, the locking member 24 can be set as a lock nut and connected to the wire rope pull rod 21 in a threaded manner.

[0050] As Figure 1 、 Figure 2 shown, the rope head assembly 20 is arranged on one side of the bracket 31, and one end of the detection plate 32 for pressing down and triggering the limit switch 33 and the limit switch 33 are arranged on the other side of the bracket 31.

[0051] As Figures 1 to 3 shown, the elastic member 22 is configured as a compression spring. One end of the compression spring abuts against the locking member 24 through the flat washer 23, and the other end of the compression spring can also abut against the rope head plate 10 through the gasket 25 to play a buffering role in the force transmission between the compression spring and the rope head plate 10 and prevent the structure of the rope head plate 10 from being damaged. It can be understood that in other embodiments, the elastic member 22 is not limited to the compression spring shown in the figure. For those skilled in the art, the elastic member 22 can also be configured as a packing, or other high-elasticity fittings, which will not be elaborated here.

[0052] As Figure 2As shown, a through hole 321 is formed in the detection plate 32. The outer diameter of the flat washer 23 is larger than the outer diameter of the through hole 321, and the outer diameter of the locking member 24 is smaller than the aperture of the through hole 321. Among them, the through hole 321 is correspondingly arranged with the wire rope pull rod 21. The locking member 24 on the wire rope pull rod 21 can pass through the corresponding through hole 321 and be exposed on the detection plate 32. Moreover, the flat washer 23 can push against the detection plate 32 under the pushing of the elastic member 22, so that the detection plate 32 triggers the limit switch 33. That is to say, during the process that the wire rope pull rod 21 drives the locking member 24 to move under the elastic pushing of the elastic member 22, the locking member 24 can directly pass through the corresponding through hole 321 to move without pushing against the detection plate 32, which can meet the use requirement that the detection plate 32 can trigger the limit switch 33 under the pushing of the flat washer 23. Here, the through hole 321 is configured as an oblong hole.

[0053] As Figure 2 shown, in one embodiment, a preset gap is formed between the flat washer 23 and the detection plate 32, so that during the operation of the elevator, the detection plate 32 can be prevented from being mis-pushed by the flat washer 23, thus playing a role in preventing the limit switch 33 from being mis-triggered. Here, the flat washer 23 can be a gasket structure connected integrally, and one flat washer 23 corresponds to a plurality of elastic members 22 arranged; the flat washer 23 can also be a plurality of gasket structures respectively corresponding to a plurality of elastic members 22 arranged.

[0054] As Figures 2 to 4 shown, the bracket 31 includes a base 311 and a height adjustment plate 312. The height adjustment plate 312 can be fixedly installed on the rope socket plate 10 through the base 311. Among them, the height adjustment plate 312 abuts against the detection plate 32 upward to support the detection plate 32, and the height adjustment plate 312 can be rotatably connected to the detection plate 32 through a rotating shaft 313. The limit switch 33 is fixedly installed in the height adjustment plate 312. That is to say, the height adjustment plate 312 of the bracket 31 can be jointly used to carry the detection plate 32 and the limit switch 33. Here, the limit switch 33 can specifically be a micro switch, a travel switch, etc.

[0055] As Figure 2 、 Figure 4 shown, the base 311 includes a first plate body 3111 and a second plate body 3112. The second plate body 3112 is vertically arranged relative to the first plate body 3111. Among them, the first plate body 3111 abuts against the rope socket plate 10 and is fixedly connected to the rope socket plate 10, and the second plate body 3112 is fixedly connected to the height adjustment plate 312. In this way, it can specifically realize the vertical assembly of the height adjustment plate 312 on the rope socket plate 10 through the base 311, which has the effect of simplifying the structure. Here, the second plate body 3112 is integrally connected to the first plate body 3111, and the second plate body 3112 and the first plate body 3111 are in arc transition.

[0056] In one embodiment, the base 311 is connected to the rope socket plate 10 by welding. Specifically, the first plate body 3111 on the base 311 can be fixed to the rope socket plate 10 by welding, which can simplify the assembly between the base 311 and the rope socket plate 10 and facilitate the assembly of the base 311 to the rope socket plate 10.

[0057] As Figure 3 , Figure 4 shown, in the thickness direction of the rope socket plate 10, the installation position of the height adjustment plate 312 on the base 311 can be adjusted. That is to say, the height of the height adjustment plate 312 during assembly on the rope socket plate 10 can be adjusted, so that the distance between the detection plate 32 and the flat washer 23 can be adjusted to meet the use requirements for adjusting the pre-compression amount of the elastic member 22 after the steel wire rope is tensioned and adjusted during subsequent maintenance. Thus, the timeliness and accuracy of the steel wire rope breakage detection when the wire rope breakage protection device 100 works can be further ensured.

[0058] As Figure 4 shown, a first kidney-shaped hole 301 is provided on the height adjustment plate 312, and a second kidney-shaped hole 302 is provided on the base 311. The second kidney-shaped hole 302 communicates with the first kidney-shaped hole 301. Among them, the wire rope breakage protection device 100 further includes a first locking member 41 and a first locking stop 42. The first locking member 41 passes through the first kidney-shaped hole 301 and the second kidney-shaped hole 302 and is locked and connected to the first locking stop 42 for fixing the height adjustment plate 312 to the base 311. Here, the first locking member 41 and the first locking stop 42 can be locked and connected by means of a threaded fit. Specifically, the first locking member 41 can be configured as a bolt, and the first locking stop 42 can be configured as a nut. When the installation position of the height adjustment plate 312 on the base 311 is adjusted, the first locking stop 42 can be first loosened from the first locking member 41, and the overlapping part between the height adjustment plate 312 and the base 311 can be adjusted by using the structural characteristics of the first kidney-shaped hole 301 and the second kidney-shaped hole 302. Finally, the first locking stop 42 is tightened again, which is convenient for the user to adjust the installation position of the height adjustment plate 312 on the base 311. It can be understood that in other embodiments, one of the first kidney-shaped hole 301 and the second kidney-shaped hole 302 can also be a circular hole only for the first locking member 41 to pass through, or the first locking stop 42 screwed to the first locking member 41 can be integrated on the height adjustment plate 312 or the base 311, or the first locking member and the first locking stop can be locked and connected by means of a snap fit or a pin lock, which will not be elaborated here.

[0059] As Figure 3 , Figure 4As shown, the height adjustment plate 312 includes a first mounting plate 3121 and a second mounting plate 3122, and the first mounting plate 3121 and the second mounting plate 3122 are oppositely arranged; wherein, a plurality of bending plates 322 are formed on the detection plate 32, and the plurality of bending plates 322 are arranged between the first mounting plate 3121 and the second mounting plate 3122, and the rotating shaft 313 passes through the first mounting plate 3121, the plurality of bending plates 322 and the second mounting plate 3122; the limit switch 33 is arranged between the first mounting plate 3121 and the second mounting plate 3122 and is fixedly connected to the first mounting plate 3121 and / or the second mounting plate 3122. That is to say, the height adjustment plate 312 can be used as a mounting basis for the first mounting plate 3121 and the second mounting plate 3122 to realize the assembly of the detection plate 32 and the limit switch 33, so that the detection plate 32 and the limit switch 33 can be integrated into the space where the rope socket plate 10 is located, which can reduce the overall volume of the rope breaking protection device 100. Here, the first mounting plate 3121 and the second mounting plate 3122 are integrated onto the height adjustment plate 312, and the number of bending plates 322 on the detection plate 32 is configured to be two.

[0060] As Figures 2 to 4 shown, the end of the rotating shaft 313 after passing through the first mounting plate 3121, the plurality of bending plates 322 and the second mounting plate 3122 can be plugged and limited by a plug 3131. That is to say, the rotating shaft 313 can be assembled and limited by the plug 3131 at the end of the rotating shaft 313, which can meet the use requirements for the plurality of bending plates 322 on the detection plate 32 to be rotatably assembled onto the height adjustment plate 312 through the rotating shaft 313.

[0061] As Figures 2 to 4 shown, in the thickness direction of the rope socket plate 10, the mounting position of the limit switch 33 on the height adjustment plate 312 can be adjusted. That is to say, the distance between the limit switch 33 and the detection plate 32 can be adaptively adjusted by changing the mounting position of the limit switch 33 on the height adjustment plate 312, which can ensure that the limit switch 33 is triggered when the detection plate 32 swings under the push of the flat gasket 23, so as to further ensure the timeliness and accuracy of the detection of the steel wire rope breakage when the rope breaking protection device 100 works.

[0062] As Figure 4As shown, a third kidney-shaped hole 303 is formed in the height adjustment plate 312, and a through hole 331 is formed in the limit switch. The through hole 331 communicates with the third kidney-shaped hole 303. Among them, the rope-breaking protection device 100 further includes a second locking member 43 and a second locking stopper 44. The second locking member 43 passes through the third kidney-shaped hole 303 and the through hole 331 and is locked and connected to the second locking stopper 44, for fixing the limit switch 33 to the height adjustment plate 312. Here, the second locking member 43 and the second locking stopper 44 can be locked and connected by means of a threaded fit. Specifically, the second locking member 43 can be configured as a bolt, and the second locking stopper 44 can be configured as a nut, so that when the installation position of the limit switch 33 on the height adjustment plate 312 is adjusted, the second locking stopper 44 can be first loosened from the second locking member 43, and the structural characteristics of the third kidney-shaped hole 303 and the through hole 331 can be utilized to adjust the installation position of the limit switch 33 on the height adjustment plate 312, and finally the second locking stopper 44 can be tightened again, which is convenient for the user to adjust the installation position of the limit switch 33 on the height adjustment plate 312. It can be understood that in other embodiments, the second locking stopper 44 screwed to the second locking member 43 can also be integrated on the height adjustment plate 312 or the limit switch 33. Alternatively, the second locking member and the second locking stopper can be locked and connected by means of a snap fit or a pin lock, which will not be elaborated here.

[0063] The technical features of the above embodiments can be combined arbitrarily. For the sake of brevity of description, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered that the scope described in this specification is covered.

[0064] Those of ordinary skill in the art in this technical field should recognize that the above embodiments are only used to illustrate the present invention, rather than to limit the present invention. As long as it is within the spirit and scope of the present invention, appropriate changes and variations made to the above embodiments fall within the scope of protection required by the present invention.

Claims

1. A rope breaking protection device, used in an elevator; characterized in that: The broken rope protection device (100) comprises: Rope head plate (10); A rope head assembly (20), comprising a wire rope pull rod (21), an elastic member (22), a flat washer (23) and a locking member (24); the wire rope pull rod (21) is arranged to pass through the rope head plate (10) and is used to connect the wire rope; the elastic member (22), the flat washer (23) and the locking member (24) are sequentially mounted on the wire rope pull rod (21) so that the elastic member (22) is assembled between the rope head plate (10) and the flat washer (23) in a pre-compressed manner; A detection assembly (30) comprises a bracket (31), a detection plate (32) and a limit switch (33); the bracket (31) is fixedly mounted on the rope head plate (10); the detection plate (32) is rotatably mounted on the bracket (31) and forms position interference with the flat washer (23); the limit switch (33) is located on the side of the detection plate (32) facing the rope head plate (10) and is fixedly connected to the bracket (31); and when the steel wire rope breaks, the elastic force of the elastic member (22) can drive the flat washer (23) to push the detection plate (32) to swing relative to the bracket (31), so that one end of the detection plate (32) is pressed down and triggers the limit switch (33).

2. The rope breaking protection device according to claim 1, characterized in that: The detection plate (32) is provided with a through hole (321), the outer diameter of the flat pad (23) is larger than the aperture of the through hole (321), and the outer diameter of the locking piece (24) is smaller than the aperture of the through hole (321); The through hole (321) is arranged corresponding to the wire rope pull rod (21), the locking piece (24) on the wire rope pull rod (21) can pass through the corresponding through hole (321) and be exposed on the detection plate (32), and the flat pad (23) can push the detection plate (32) under the push of the elastic piece (22), so that the detection plate (32) triggers the limit switch (33).

3. The rope breaking protection device according to claim 1, characterized in that: The bracket (31) comprises a base (311) and a height adjustment plate (312), and the height adjustment plate (312) can be fixedly mounted on the rope head plate (10) through the base (311); The height adjustment plate (312) is pressed upward against the detection plate (32) to support the detection plate (32), and the height adjustment plate (312) can be rotatably connected to the detection plate (32) via a rotating shaft (313); The limit switch (33) is fixedly mounted on the height adjustment plate (312).

4. The rope breaking protection device according to claim 3, characterized in that: The height adjustment plate (312) comprises a first mounting plate (3121) and a second mounting plate (3122), wherein the first mounting plate (3121) and the second mounting plate (3122) are arranged opposite to each other; A plurality of bent plates (322) are formed on the detection plate (32), the plurality of bent plates (322) are arranged between the first mounting plate (3121) and the second mounting plate (3122), and the rotating shaft (313) passes through the first mounting plate (3121), the plurality of bent plates (322) and the second mounting plate (3122); The limit switch (33) is arranged between the first mounting plate (3121) and the second mounting plate (3122), and is connected and fixed to the first mounting plate (3121) and / or the second mounting plate (3122).

5. The rope breaking protection device according to claim 3, characterized in that: In the thickness direction of the rope head plate (10), the installation position of the height adjustment plate (312) on the base (311) can be adjusted; The height adjustment plate (312) is provided with a first waist-shaped hole (301), and the base (311) is provided with a second waist-shaped hole (302), and the second waist-shaped hole (302) is connected to the first waist-shaped hole (301); wherein the rope breaking protection device (100) further comprises a first locking piece (41) and a first locking piece (42), and the first locking piece (41) passes through the first waist-shaped hole (301) and the second waist-shaped hole (302) and is locked and connected with the first locking piece (42), so as to fix the height adjustment plate (312) to the base (311).

6. The rope breaking protection device according to claim 3, characterized in that: In the thickness direction of the rope head plate (10), the installation position of the limit switch (33) on the height adjustment plate (312) can be adjusted; A third waist-shaped hole (303) is provided on the height adjustment plate (312), and a through hole (331) is provided on the limit switch (33), wherein the through hole (331) is connected to the third waist-shaped hole (303); wherein the rope breaking protection device (100) further comprises a second locking piece (43) and a second locking piece (44), wherein the second locking piece (43) passes through the third waist-shaped hole (303) and the through hole (331) and is locked and connected with the second locking piece (44), so as to fix the limit switch (33) to the height adjustment plate (312).

7. The rope breaking protection device according to claim 3, characterized in that: The base (311) comprises a first plate body (3111) and a second plate body (3112), wherein the second plate body (3112) is vertically arranged relative to the first plate body (3111); Wherein, the first plate body (3111) is attached to the rope head plate (10) and is connected and fixed to the rope head plate (10), and the second plate body (3112) is connected and fixed to the height adjustment plate (312).

8. The rope breaking protection device according to claim 3, characterized in that: The base (311) is connected to the rope head plate (10) by welding.

9. The rope breaking protection device according to claim 4, characterized in that: The end of the rotating shaft (313) after passing through the first mounting plate (3121), the plurality of bending plates (322) and the second mounting plate (3122) can be plugged and limited by a latch (3131).

10. The rope breaking protection device according to claim 1, characterized in that: The rope head assembly (20) is arranged on one side of the bracket (31), and one end of the detection plate (32) used for pressing down and triggering the limit switch (33) and the limit switch (33) are arranged on the other side of the bracket (31).

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