Elevator hoist rope extension fracture detection device
By designing the rope head combination and rope breaking mechanism in the elevator traction rope extension detection device, the problem of inflexible and inaccurate adjustment of the spacing between the punching plate and the rope breaking switch in the prior art is solved, and the avoidance of false touch and flexible adjustment of the extension range is achieved, and the accuracy and safety of detection are improved.
Patent Information
- Application Number
- CN202422061346.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-23
- Publication Date
- 2025-06-17
- Estimated Expiration
- 2034-08-23
AI Technical Summary
The existing elevator traction rope extension and break detection device has insufficient flexibility and accuracy when adjusting the spacing between the punching plate and the broken rope switch, which can easily lead to false touch and inappropriate adjustment of the elongation range.
An elevator traction rope extension and break detection device including a rope head plate, a rope head combination and a rope breaking mechanism is designed. The rope head combination limits the shaking of the rope head rod through the combination of nuts, plates, upper limit sleeves, pressure springs and lower limit sleeves; the rope breaking mechanism achieves flexible spacing adjustment through the coordination of driven bevel gears, active bevel gears and adjustment rods.
It effectively avoids the mistouch of the elevator wire rope extension and break detection, and realizes flexible and accurate spacing adjustment within the allowable range of elongation, improving the accuracy and safety of detection.
Smart Images
Figure CN222989464U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of elevator equipment, and relates to a detection device for elongation and breakage of elevator traction ropes. Background Technique
[0002] During the use of elevator traction ropes, due to the action of various stresses, elongation may occur. The main reasons include material properties, load effects, environmental factors, etc. The breakage of traction ropes is a major hidden danger to elevator safety. At present, traction elevators will use elevator elongation and breakage detection devices to detect or monitor steel wire ropes to avoid safety accidents caused by sudden breakage or excessive elongation of steel wire ropes.
[0003] Chinese utility model patent, application number CN2016205890339, discloses a rope-breaking protection device for villa elevators, including a UKS switch, a switch support, and a striker plate. The switch support is provided with a waist-shaped hole for fixing the UKS switch. The hypotenuse contacts the UKS switch when the striker plate rises to the corresponding position of the UKS switch. The switch support is fixed on the rope head plate, and a rope head assembly is also fixed on the rope head plate. The rope head assembly includes a nut, a gasket, and a compression spring fixed on the rope head rod from top to bottom.
[0004] The allowable elongation range of elevator traction steel wire ropes is generally controlled within 0.3%. As in the above-mentioned prior art, when the length of the elevator traction steel wire rope is longer, a compression spring with a relatively long length and a large elastic deformation amount is required. When the rope head rod is stressed, it is easy to cause the upper end of the compression spring to shake, which may lead to the problem of easy mis-touch. At the same time, due to the different working environments and working conditions of elevators, the distance between the UKS switch and the striker plate needs to be appropriately adjusted within the allowable elongation range. The prior art has problems of inflexible and inaccurate adjustment, so improvement and enhancement are needed. Content of the Utility Model
[0005] The purpose of the utility model is to propose a detection device for elongation and breakage of elevator traction ropes in view of the above problems existing in the prior art.
[0006] The object of the utility model can be achieved by the following technical solutions: An elevator traction rope elongation and breakage detection device, including a rope head plate and a rope head assembly fixed on the rope head plate. The rope head assembly includes a nut, a striker plate, an upper limit sleeve, a compression spring, and a lower limit sleeve that are fixed on a rope head rod from top to bottom. The striker plate is fixed between the two nuts. The compression spring is sleeved outside the rope head rod and fixed between the upper limit sleeve and the lower limit sleeve. It also includes a rope breakage mechanism. The rope breakage mechanism includes a base, a rope breakage switch, a driven bevel gear, a driving bevel gear, and an adjusting rod that are fixed on the rope head plate. The driven bevel gear is rotatably arranged on the base, and the driven bevel gear is sleeved outside the adjusting rod and threadedly engaged with it. One side of the base has a support. The driving bevel gear is rotatably arranged on the support and meshed with the driven bevel gear. One end of the driving bevel gear is fixedly connected with a turning handle. The rope breakage switch is fixed at the top end of the adjusting rod. A sliding sleeve is fixed on one side of the rope head assembly. The adjusting rod slidably passes through the sliding sleeve. A limiting groove is fixed on one side of the upper limit sleeve. A roller that abuts against and is in rolling cooperation with the limiting groove is rotatably arranged on one side of the sliding sleeve. When the striker plate rises to a position corresponding to the rope breakage switch, it abuts against the rope breakage switch.
[0007] Preferably, the striker plate is L-shaped and its end is bent inward.
[0008] Preferably, the upper end of the adjusting rod is provided with scales, and an arrow pointing to the scales is provided on one side of the striker plate.
[0009] Preferably, the rope head plate is fixed on a cross beam, and the cross beam is erected and fixed on the upper ends of two parallel I-beams.
[0010] Preferably, the diameter of the adjusting rod is 4 - 12 mm.
[0011] Compared with the prior art, the utility model has the following advantages:
[0012] By limiting the rope head rod to prevent the compression spring from shaking, it effectively avoids false triggering of the elevator steel wire rope elongation and breakage detection; it can also flexibly and accurately adjust the distance between the striker plate and the rope breakage switch within the allowable elongation range according to different elevator working environments and working conditions. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] Figure 1 is a schematic diagram of the overall structure of the utility model.
[0014] Figure 2 is Figure 1 an enlarged schematic diagram of the structure at A.
[0015] In the figure, 1 is the rope end plate; 2 is the rope end assembly; 21 is the nut; 22 is the striker plate; 221 is the arrow; 23 is the upper limit sleeve; 231 is the limit groove; 24 is the compression spring; 25 is the lower limit sleeve; 3 is the rope end rod; 4 is the rope breakage mechanism; 41 is the base; 411 is the support; 42 is the rope breakage switch; 43 is the driven bevel gear; 44 is the driving bevel gear; 441 is the turning handle; 45 is the adjusting rod; 451 is the scale; 5 is the sliding sleeve; 51 is the roller; 6 is the cross beam; 7 is the I-beam. Detailed implementation mode
[0016] The following are specific embodiments of the present invention and, in combination with the accompanying drawings, further describe the technical solutions of the present invention, but the present invention is not limited to these embodiments.
[0017] As Figure 1 、 Figure 2 shown, an elevator traction rope elongation and breakage detection device includes a rope end plate 1 and a rope end assembly 2 fixed on the rope end plate 1. The rope end assembly 2 includes a nut 21, a striker plate 22, an upper limit sleeve 23, a compression spring 24, and a lower limit sleeve 25 fixed on the rope end rod 3 from top to bottom. The striker plate 22 is fixed between the two nuts 21. The compression spring 24 is sleeved outside the rope end rod 3 and fixed between the upper limit sleeve 23 and the lower limit sleeve 25. It is characterized in that it further includes a rope breakage mechanism 4. The rope breakage mechanism 4 includes a base 41, a rope breakage switch 42, a driven bevel gear 43, a driving bevel gear 44, and an adjusting rod 45 fixed on the rope end plate 1. The driven bevel gear 43 is rotatably arranged on the base 41. The driven bevel gear 43 is sleeved outside the adjusting rod 45 and is in threaded cooperation with it. One side of the base 41 has a support 411. The driving bevel gear 44 is rotatably arranged on the support 411 and meshes with the driven bevel gear 43. One end of the driving bevel gear 44 is fixedly connected with a turning handle 441. The rope breakage switch 42 is fixed at the top of the adjusting rod 45. A sliding sleeve 5 is fixed on one side of the rope end assembly 2. The adjusting rod 45 slidably passes through the sliding sleeve 5. A limit groove 231 is fixed on one side of the upper limit sleeve 23. A roller 51 that abuts against and is in rolling cooperation with the limit groove 231 is rotatably arranged on one side of the sliding sleeve 5. When the striker plate 22 rises to a position corresponding to the rope breakage switch 42, it abuts against the rope breakage switch 42.
[0018] The working principle of the present utility model in practical applications: When the elevator wire rope abnormally elongates or breaks, the pressure spring 24 releases and elongates, pushing the upper limit sleeve 23 upward, thereby driving the striker plate 22 upward to abut against the trigger end of the rope break switch 42, controlling the elevator to brake safely. During this period, the roller 51 and the limit groove 231 perform relative rolling motion; when the elevator wire rope does not elongate to trigger the rope break switch 42, the roller 51 plays a limiting role on the limit groove 231 to prevent the upper end of the pressure spring 24 from shaking and causing the striker plate 22 to accidentally touch the rope break switch 42; according to the different working environments and working conditions of the elevator, by manually rotating the turning handle 441, the driving bevel gear 44 is driven to rotate, causing the driven bevel gear 43 to rotate, and then driving the adjusting rod 45 to slide along the sliding sleeve 5, flexibly and accurately adjusting the distance between the striker plate 22 and the rope break switch 42.
[0019] Further, the striker plate 22 is L-shaped and its end is bent inward. When the striker plate 22 rises, it first contacts the bent part at the end of the striker plate 22 and accurately contacts the trigger end of the rope break switch 42 along its bent part, so as to improve the detection accuracy and the service life of the rope break switch 42.
[0020] A scale 451 is provided at the upper end of the adjusting rod 45, and an arrow 221 pointing to the scale 451 is provided on one side of the striker plate 22, enabling the operator to adjust the distance between the striker plate 22 and the rope break switch 42 more intuitively and accurately.
[0021] The rope socket plate 1 is fixed on the cross beam 6, and the cross beam 6 is erected and fixed at the upper ends of two parallel I-beams 7. The cross beam 6 can share the load at the lower end of the rope socket plate 1 and keep the lower end face of the rope socket plate 1 balanced. The I-beam 7 has high strength to improve the stability below the rope socket plate 1.
[0022] The diameter of the adjusting rod 45 is 4 - 12 mm.
[0023] The specific embodiments described herein are merely illustrative of the spirit of the present utility model. Those skilled in the art of the present utility model can make various modifications or supplements to the described specific embodiments or use similar methods to replace them, but will not deviate from the spirit of the present utility model or exceed the scope defined by the appended claims.
Claims
1. An elevator traction rope elongation and breakage detection device, comprising a rope end plate (1) and a rope end assembly (2) fixed on the rope end plate (1), the rope end assembly (2) comprising a nut (21) fixed from top to bottom on a rope end rod (3), a beating plate (22), an upper limit sleeve (23), a pressure spring (24) and a lower limit sleeve (25), the beating plate (22) being fixed between two of the nuts (21), the pressure spring (24) being sleeved outside the rope end rod (3) and fixed between the upper limit sleeve (23) and the lower limit sleeve (25), characterized in that: The invention also comprises a rope-breaking mechanism (4), wherein the rope-breaking mechanism (4) comprises a base (41) fixed on the rope head plate (1), a rope-breaking switch (42), a driven bevel gear (43), a driving bevel gear (44) and an adjusting rod (45), wherein the driven bevel gear (43) is rotatably arranged on the base (41), the driven bevel gear (43) is sleeved on the outside of the adjusting rod (45) and is threadably matched with the adjusting rod, and a support (411) is provided on one side of the base (41), the driving bevel gear (44) is rotatably arranged on the support (411) and is meshed with the driven bevel gear (43), and the driving bevel gear (44) is rotatably arranged on the support (411) and is meshed with the driven bevel gear (43). A turning handle (441) is fixedly connected to one end of the movable bevel gear (44), a rope breaking switch (42) is fixed to the top of the adjusting rod (45), a sliding sleeve (5) is fixed to one side of the rope head assembly (2), the adjusting rod (45) is slidably inserted into the sliding sleeve (5), a limiting groove (231) is fixed to one side of the upper limit sleeve (23), a roller (51) is rotatably provided on one side of the sliding sleeve (5) and is in contact with the limiting groove (231) and rollingly matched therewith, and when the beating plate (22) rises to a position corresponding to the rope breaking switch (42), it is in contact with the rope breaking switch (42).
2. The elevator traction rope elongation and breakage detection device according to claim 1, characterized in that: The beating plate (22) is L-shaped and its end is bent inward.
3. The elevator traction rope elongation and breakage detection device according to claim 1, characterized in that: The upper end of the adjusting rod (45) is provided with a scale (451), and one side of the hitting plate (22) is provided with an arrow (221) pointing to the scale (451).
4. The elevator traction rope elongation and breakage detection device according to claim 1, characterized in that: The rope head plate (1) is fixed on a crossbeam (6), and the crossbeam (6) is mounted and fixed on the upper ends of two parallel I-beams (7).
5. The elevator traction rope elongation and breakage detection device according to claim 1, wherein the diameter of the adjustment rod (45) is 4-12 mm.