Tensioning device for swing arm type speed governor
By combining the bracket assembly, switch assembly, swing arm assembly, and rope wheel assembly, the problems of random installation position of tensioning device and complex anti-jump mechanism are solved, achieving fixed swing stroke and fully enclosed protection, and reducing costs.
Patent Information
- Application Number
- CN202520103636.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-16
- Publication Date
- 2025-12-16
- Estimated Expiration
- 2035-01-16
AI Technical Summary
The installation location of the tensioning device is highly random, resulting in poor spatial adaptability and potential damage to the limit switch. The anti-jump mechanism is complex and costly, and the protective cover lacks sufficient strength and sealing, making it impossible to achieve fully enclosed protection.
The design adopts a combination of bracket assembly, switch assembly, swing arm assembly and rope wheel assembly. The swing range of the swing arm is fixed by limit screws and four-bar linkage mechanism. Combined with the protective cover keel and connecting rod, it forms a six-sided enclosure, which simplifies the anti-jump mechanism and improves the strength and sealing of the protective cover.
It achieves a fixed swing stroke for the swing arm, protects the limit switch from damage, simplifies the anti-jump mechanism, improves the strength and sealing of the protective cover, achieves full-enclosed protection, and reduces costs.
Smart Images
Figure CN223674083U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to elevator safety equipment technical field, concretely relates to a kind of tensioner for swing arm type speed limiter. BACKGROUND
[0002] The downward swinging range of the tensioner is related to the de-energizing stroke of the travel switch, but the de-energizing stroke of the switch itself has differences, and the standards of different manufacturers are not completely consistent, thus causing randomness of the position of the downward swinging of the tensioner, and therefore it is necessary to improve the installation position of the tensioner to eliminate such problems, thus causing interference between the tensioning and the upper car, and thus poor space adaptability and possible damage to the travel switch.
[0003] When the conventional full-coverage protective cover swings downward, the protective cover will swing downward together due to being fixed on the swing arm, but the steel wire rope needs to be kept vertical upward all the time, and therefore a long wire leakage groove needs to be opened above the protective cover, which will reduce the overall strength of the protective cover and the dust and foreign matter falling prevention capability above the protective cover, and due to this problem, the front and rear surfaces of the full-coverage protective cover cannot be closed, and only 4-surface protection can be achieved.
[0004] According to the national standard requirement (GB / T 7588.1-2020 Safety Code for the Construction and Installation of Elevators), the tensioner needs to be designed with three steel wire rope anti-jumping points, but the position of the anti-jumping points will change due to the swinging of the swing arm, and the position change of the front and rear points will cause interference with the steel wire rope, so the gap between the anti-jumping mechanism and the rope wheel is usually large, and the anti-jumping effect cannot be achieved well, or a separate anti-jumping mechanism needs to be designed, thus causing complex structure and high cost.
[0005] Since the protective cover cannot be closed left and right, the left and right need to be separately designed with rope blocking mechanisms (rope blocking shafts), and due to the swinging of the swing arm, the position of the rope blocking shafts changes, and the position of the left rope blocking shaft is lifted above the center of the rope wheel, thus increasing the downward swinging amplitude, and the left rope blocking shaft gradually approaches the left steel wire rope, so the position of the rope blocking shaft and the rope wheel cannot be too close, and finally the expected rope blocking cannot be achieved. SUMMARY
[0006] In view of the deficiencies in the prior art, the purpose of the embodiments of the utility model is to provide a tensioner for swing arm type speed limiter to solve the problems in the background art.
[0007] To achieve the above-mentioned purpose, the utility model provides the following technical scheme:
[0008] A tensioner for swing arm type speed limiter, comprising a support assembly, further comprising:
[0009] A switch assembly is arranged on one side of the support assembly, and one side of the switch assembly is provided with a rope wheel assembly movably connected with the switch assembly.
[0010] A swing arm assembly is arranged on one side of the switch assembly, and the swing arm assembly is arranged on one side of the rope wheel assembly and movably connected with the swing arm assembly.
[0011] As a further scheme of the utility model, the support assembly comprises a support plate and a guide rail clamping plate, the guide rail clamping plate is arranged on one side of the support plate, and the guide rail clamping plate is movably connected with the elevator guide rail.
[0012] As a further scheme of the utility model, the switch assembly comprises a travel switch and a mounting screw, the travel switch is arranged on one side of the support assembly through the mounting screw, and the travel switch is connected with the rope wheel assembly.
[0013] As a further scheme of the utility model, the swing arm assembly comprises an angle bracket, a swing arm, a pivot bolt, a switch impact plate and a counterweight, the angle bracket is connected with the support plate, the angle bracket is connected with the swing arm through the pivot bolt, one side of the swing arm is provided with the switch impact plate, and the swing arm is fixedly connected with the counterweight.
[0014] As a further scheme of the utility model, the rope wheel assembly comprises a rope wheel, a rope wheel shaft, a shield one, a shield two, a protection cover keel and a protection cover connecting rod, the rope wheel is movably connected with the rope wheel shaft, the shield one and the shield two are symmetrically arranged about the rope wheel, the inner side of the shield two is provided with the protection cover keel, and the outer side of the shield two is provided with the protection cover connecting rod.
[0015] Compared with the prior art, the utility model has the following beneficial effects:
[0016] First, two limit screws are arranged on the swing arm, and an arc-shaped long waist hole is arranged on one side of the fixed support, when the swing reaches the design requirement, the limit screw is limited by the limit waist hole and cannot continue to swing, so that the swing stroke is fixed and reliable, at this time, the travel switch is only adjusted to make the tension be completely triggered to cut off the power before the limit stroke, the adjustment is simple and convenient to operate, even if the steel wire rope is broken, the travel switch can still be effectively protected under the block of the limit bolt, and the open damage caused by leakage or elevator abnormality is prevented.
[0017] In order to more clearly illustrate the structural features and effects of the utility model, the utility model will be described in detail below in combination with the drawings and specific embodiments. BRIEF DESCRIPTION OF DRAWINGS
[0018] Figure 1 It is a structural schematic view of the utility model embodiment.
[0019] Figure 2 As an embodiment of the utility model Figure 1 Top view.
[0020] Figure 3 This is a schematic diagram of the swing arm assembly in an embodiment of the utility model.
[0021] Figure 4 This is a schematic diagram of the rope pulley assembly in an embodiment of the utility model.
[0022] Reference numerals: 1-Bracket assembly, 11-Bracket plate, 12-Guide rail clamp, 2-Switch assembly, 21-Limit switch, 22-Mounting screw, 3-Swing arm assembly, 31-Angle frame, 32-Swing arm, 33-Shaft bolt, 34-Switch impact plate, 35-Counterweight block, 4-Rope pulley assembly, 41-Rope pulley, 42-Rope pulley shaft, 43-Guard cover one, 44-Guard cover two, 45-Guard cover keel, 46-Guard cover connecting rod. Detailed Implementation
[0023] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.
[0024] The specific implementation of this utility model will be described in detail below with reference to specific embodiments.
[0025] In one embodiment, a tensioning device for a swing-arm type speed limiter, see [link / reference] Figures 1-4 Including bracket assembly 1, it also includes:
[0026] A switch assembly 2 is disposed on one side of the bracket assembly 1, and a pulley assembly 4 is disposed on one side of the switch assembly 2, the pulley assembly 4 being movably connected to the switch assembly 2;
[0027] The swing arm assembly 3 is disposed on one side of the switch assembly 2 and on one side of the rope pulley assembly 4, and the rope pulley assembly 4 is movably connected to the swing arm assembly 3.
[0028] Further, see Figures 1-4 The bracket assembly 1 includes a bracket plate 11 and a guide rail clamp 12. The guide rail clamp 12 is disposed on one side of the bracket plate 11 and is movably connected to the elevator guide rail.
[0029] Further, see Figures 1-4The switch assembly 2 comprises a stroke switch 21 and a mounting screw 22, the stroke switch 21 is mounted on one side of the support assembly 1 through the mounting screw 22, and the stroke switch 21 is connected with the rope wheel assembly 4.
[0030] Further, referring to Figures 1-4 The swing arm assembly 3 comprises an angle bracket 31, a swing arm 32, a pivot bolt 33, a switch striker plate 34 and a counterweight 35, the angle bracket 31 is connected with the support plate 11, the angle bracket 31 is connected with the swing arm 32 through the pivot bolt 33, one side of the swing arm 32 is provided with the switch striker plate 34, and the swing arm 32 is fixedly connected with the counterweight 35.
[0031] Further, referring to Figures 1-4 The rope wheel assembly 4 comprises a rope wheel 41, a rope wheel shaft 42, a shroud one 43, a shroud two 44, a protective cover keel 45 and a protective cover connecting rod 46, the rope wheel 41 is movably connected with the rope wheel shaft 42, the shroud one 43 and the shroud two 44 are symmetrically arranged about the rope wheel 41, the inner side of the shroud two 44 is provided with the protective cover keel 45, and the outer side of the shroud two 44 is provided with the protective cover connecting rod 46.
[0032] In the embodiment, the support plate 11 is a main supporting component, the guide rail clamping plate 12 is directly fixed at the lower end of the guide rail, the stroke switch 21 functions as a rope breaking protection and an over-travel protection,
[0033] The angle bracket 31 functions as a conversion plate, the front end is connected with the support plate 11 through a bolt, the rear end is connected with the swing arm 32 through the pivot bolt 33, and is provided with a limiting waist hole for controlling the rotation range of the swing arm 32, one end of the stroke switch 21 and the protective cover connecting rod 46 is also mounted on the limiting waist hole;
[0034] The swing arm 32 is a swing main body, can rotate in the limiting waist hole around the pivot bolt 33 of the swing arm 32, and remains horizontal in a normal state, and swings up and down when the steel wire rope is elongated or shortened;
[0035] The switch striker plate 34 can make the stroke switch 21 lose power before the swing arm 32 swings downward to the limit position, so as to prevent the tensioning device from being disabled;
[0036] The counterweight 35 is a main source of tension force of the tensioning device.
[0037] The protective cover is composed of the shroud one 43 and the shroud two 44, and functions as anti-winding, anti-pinning and dustproof;
[0038] The rope wheel 41 is composed of the rope wheel 41, a bearing and a circlip;
[0039] The gusset 45 has two main functions, one is to strengthen the structure of the first shield 43 and the second shield 44, and the other is to increase the flexibility and stability of the rotation of the first shield 43 and the second shield 44.
[0040] The protection cover connecting rod 46 is fixed on the gusset 45 on one side and fixed on the angle frame 31 on the other side, and is a four-bar linkage mechanism with the swing arm 32, which keeps the shield horizontal.
[0041] The rope wheel 41 and the gusset 45 are installed on the rope wheel shaft 42.
[0042] When the product is designed, the four-bar linkage mechanism is formed by the first shield 43, the second shield 44, the swing arm 32 and the protection cover connecting rod 46, so that when the swing arm 32 swings, the first shield 43 and the second shield 44 remain horizontal and static relative to the position of the steel wire rope, thus achieving six-sided sealing, only a small rope leakage hole is needed on the top to ensure the normal passage of the steel wire rope, thereby greatly improving the overall strength and sealing of the shield, and truly achieving "full packaging", protecting the internal structure and achieving full protection to prevent accidental injury to workers during operation.
[0043] Due to the four-bar linkage mechanism, the first shield 43 and the second shield 44 remain horizontal, and the shield is six-sided protected, so there is no need to design a separate anti-jumping mechanism, the left and right directions are directly protected by the shield, and the bottom is protected by the gusset 45, and the anti-jumping gap can be controlled at about 3mm, while the steel wire rope is 6mm in diameter, so the steel wire rope can be effectively prevented from jumping out of the rope groove, and the cost and design advantages are considered.
[0044] The above only describes the preferred embodiment of the present application, and does not limit the present application, any modification, equivalent replacement and improvement within the spirit and principles of the present application should be included in the protection scope of the present application.
Claims
1. A tensioning device for a swing arm governor comprising a bracket assembly, characterised in that, Also include: Switch assembly, one side of the switch assembly is provided with a rope wheel assembly, the rope wheel assembly is movably connected with the switch assembly; Swing arm assembly, one side of the switch assembly is provided with a rope wheel assembly, the rope wheel assembly is movably connected with the swing arm assembly; The rope wheel assembly comprises a rope wheel, a rope wheel shaft, a shield one, a shield two, a shield keel and a shield connecting rod, the rope wheel is movably connected with the rope wheel shaft, the shield one and the shield two are symmetrically arranged about the rope wheel, the inner side of the shield two is provided with the shield keel, and the outer side of the shield two is provided with the shield connecting rod.
2. The tensioning device for a swing arm type speed limiter according to claim 1, characterized in that, The support assembly comprises a support plate and a guide rail clamping plate, the guide rail clamping plate is arranged on one side of the support plate, and the guide rail clamping plate is movably connected with the elevator guide rail.
3. The tensioning device for a swing arm type speed limiter according to claim 2, characterized in that, The switch assembly comprises a travel switch and a mounting screw, the travel switch is mounted on one side of the support assembly through the mounting screw, and the travel switch is connected with the rope wheel assembly.
4. The tensioning device for a swing arm type speed limiter according to claim 3, characterized in that, The swing arm assembly comprises an angle frame, a swing arm, a rotating shaft bolt, a switch striker plate and a counterweight, the angle frame is connected with the support plate, the angle frame is connected with the swing arm through the rotating shaft bolt, one side of the swing arm is provided with the switch striker plate, and the swing arm is fixedly connected with the counterweight.