Lift car limiting device with damping structure for elevator maintenance
By introducing a multi-stage buffer structure and clamping mechanism into the elevator limit device, the problem of unsatisfactory single-stage shock absorption in the existing technology is solved, and multiple buffering and stable clamping of the elevator during limit operation are achieved, thereby improving the safety of elevator maintenance.
Patent Information
- Application Number
- CN202423102963.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-16
- Publication Date
- 2025-11-21
- Estimated Expiration
- 2034-12-16
AI Technical Summary
The existing elevator limit device has an elastic component at the bottom of the elevator shaft that can only provide shock absorption once, which is not ideal and cannot meet the stability requirements during elevator maintenance.
It adopts a multi-stage buffer structure, including a combination of hydraulic cylinders, springs and dampers. Multiple buffering is achieved through the exchange of hydraulic oil and multiple elastic deformations. Combined with the clamping mechanism, it uses the cooperation of a dual-axis motor and a threaded rod to achieve stable clamping of the elevator.
Multiple buffering mechanisms were implemented, improving the shock absorption effect, ensuring the stability of the elevator when it reaches the descent limit, preventing shaking, and ensuring the safety of elevator maintenance.
Smart Images
Figure CN223575892U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to elevator maintenance technical field, concretely is elevator maintenance car limiting device with shock -absorbing structure. BACKGROUND
[0002] The elevator maintenance car limiting device is a safety device used in the maintenance and repair process of the elevator, which is usually installed at the bottom of the elevator shaft to limit the elevator car and ensure the safety of the maintenance personnel during maintenance and repair.
[0003] The current elevator limiting device is generally provided with elastic components at the bottom of the elevator shaft, which are usually rubber and springs, to limit and absorb shock during elevator maintenance. However, the elastic components can only absorb shock once during the limiting and absorbing process, and the shock-absorbing effect is not ideal. Therefore, we propose an elevator maintenance car limiting device with a shock-absorbing structure. SUMMARY
[0004] The utility model discloses a kind of elevator maintenance car limiting devices with shock-absorbing structure, to solve the problem that the current elevator limiting device is generally provided with rubber and spring at the bottom of the elevator shaft in the above background art, to limit and absorb shock during elevator maintenance. However, the elastic components can only absorb shock once during the limiting and absorbing process, and the shock-absorbing effect is not ideal.
[0005] To achieve the above purpose, the utility model provides the following technical scheme: a kind of elevator maintenance car limiting device with shock-absorbing structure, including bottom plate, shock-absorbing mechanism, top plate and clamping mechanism, the shock-absorbing mechanism is connected to the top of the bottom plate, the top plate is fixedly connected to the top of the shock-absorbing mechanism, the clamping mechanism is connected to the top of the top plate, the shock-absorbing mechanism includes first hydraulic cylinder, connecting plate, second hydraulic cylinder, connecting hose, first spring, slide bar, extrusion block, fixed plate, limiting rod, stress block, second spring and damper, the top of the bottom plate Four corner edge position is fixedly connected with first hydraulic cylinder, the top of the first hydraulic cylinder is fixedly connected with connecting plate, the top of the connecting plate Four corner edge position is fixedly connected with second hydraulic cylinder, connecting hose is fixedly connected between the first hydraulic cylinder and the second hydraulic cylinder, first spring is fixedly connected between the top of the bottom plate and the bottom of the connecting plate, slide bar is fixedly connected in the middle of the front and rear of the bottom of the top plate, extrusion block is fixedly connected in the middle of the front and rear of the bottom of the top plate, fixed plate is fixedly connected on the top of the connecting plate, limiting rod is fixedly connected between the opposite sides of the fixed plate of left and right parts, stress block is symmetrically slidably connected on the outer side wall of the limiting rod, second spring is fixedly connected on the bottom of the mutually far side of the stress block of left and right parts, damper is fixedly connected in the middle of the bottom of the mutually far side of the stress block of left and right parts.
[0006] As a further description of the above technical solutions:
[0007] The bottom end of the sliding rod penetrates the bottom of the connecting plate, and the sliding rod is in sliding connection with the connecting plate, and the bottom end of the sliding rod is fixedly connected with a baffle.
[0008] As a further description of the above technical solutions:
[0009] The other end of the second spring is fixedly connected to the inner side of the fixed plate, and the second spring is sleeved on the outer side of the limiting rod, and the other end of the damper is fixedly connected to the inner side of the fixed plate.
[0010] As a further description of the above technical solutions:
[0011] The opposite sides of the stress blocks on the left and right sides and the left and right parts of the extrusion block are provided with inclined surfaces.
[0012] As a further description of the above technical solutions:
[0013] The clamping mechanism comprises a mounting groove, a limiting groove, a connecting block, a double-shaft motor, a threaded rod, a sliding block, a limiting block and a clamping block, the top middle part of the top plate is provided with a mounting groove penetratingly, the left and right parts of the front and rear sides of the mounting groove are provided with limiting grooves, the middle parts of the front and rear sides of the mounting groove are fixedly connected with connecting blocks, the opposite sides of the connecting blocks of the front and rear parts are fixedly connected with a double-shaft motor, the middle parts of the left and right sides of the mounting groove are rotatably connected with threaded rods through bearings, the outer side walls of the threaded rods are threadedly connected with sliding blocks, the middle parts of the front and rear sides of the sliding blocks are fixedly connected with limiting blocks, and the top of the sliding block is fixedly connected with a clamping block.
[0014] As a further description of the above technical solutions:
[0015] The input end of the double-shaft motor is electrically connected with the output end of an external power supply, the output shaft end of the double-shaft motor is fixedly connected with the other end of the threaded rod, and the limiting block is in sliding connection with the inside of the limiting groove.
[0016] Compared with the prior art, the utility model has the advantages that:
[0017] 1. The elevator maintenance car limiting device with damping structure, when the elevator is lowered to the top plate limiting, the top plate is extruded, the top plate is lowered, the extrusion block is driven to descend, the stress block is extruded, the second spring and the damper are extruded, the preliminary buffering is carried out through the deformation of the second spring, then when the top plate extrudes the second hydraulic cylinder, the hydraulic oil in the second hydraulic cylinder enters the first hydraulic cylinder, the connecting plate rises, the first spring is stretched, buffering is carried out again through the stretching of the first spring, so that multiple buffering is realized, the damping effect is improved, and the stability during the descending limiting is guaranteed.
[0018] 2. The elevator maintenance car limiting device with damping structure, after the elevator contacts the top plate, the double-shaft motor is started, the threaded rod is driven to rotate, the limiting block and the limiting groove are matched, the sliding block is driven to approach each other when the threaded rod rotates, so that the clamping block approaches each other, the elevator is clamped, the elevator is prevented from shaking, the stability of the elevator is further guaranteed, and the elevator maintenance is facilitated. BRIEF DESCRIPTION OF DRAWINGS
[0019] Figure 1 It is a whole structure schematic view of the elevator maintenance car limiting device with damping structure.
[0020] Figure 2 It is a main view structure schematic view of the elevator maintenance car limiting device with damping structure.
[0021] Figure 3 It is a damping mechanism structure schematic view of the elevator maintenance car limiting device with damping structure.
[0022] Figure 4 It is an extrusion block installation structure schematic view of the elevator maintenance car limiting device with damping structure.
[0023] Figure 5 It is a clamping mechanism structure schematic view of the elevator maintenance car limiting device with damping structure.
[0024] In the drawing: 100, bottom plate; 200, damping mechanism; 210, first hydraulic cylinder; 220, connecting plate; 230, second hydraulic cylinder; 240, connecting hose; 250, first spring; 260, sliding rod; 270, extrusion block; 280, fixed plate; 281, limiting rod; 290, stress block; 291, second spring; 292, damper; 300, top plate; 400, clamping mechanism; 410, installation groove; 411, limiting groove; 420, connecting block; 430, double-shaft motor; 440, threaded rod; 450, sliding block; 460, limiting block; 470, clamping block. DETAILED DESCRIPTION
[0025] The technical solutions in the embodiments of the utility model will be apparently and completely described in connection with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all the other embodiments obtained by the ordinary skilled in the art without creative labor belong to the scope of protection of the utility model.
[0026] In the description of the utility model, it is understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like is the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or element indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the utility model. In addition, the features limited as "first" and "second" can explicitly or implicitly include one or more features. In the description of the utility model, unless otherwise specified, the meaning of "a plurality of" is two or more.
[0027] In the description of the utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "mounting", "connection" and "connection" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication inside two elements. For the ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.
[0028] The utility model provides a kind of car limiting device for elevator maintenance with damping structure, realize multiple buffering, improve damping effect, guarantee stable when descending limit, please refer to Figures 1-5 Including bottom plate 100, damping mechanism 200, top plate 300 and clamping mechanism 400;
[0029] Please refer to again Figure 1 Bottom plate 100 is used to install damping mechanism 200, top plate 300 and clamping mechanism 400;
[0030] Please refer to again Figure 1The damping mechanism 200 is connected to the top of the bottom plate 100, used for mounting the top plate 300, the top plate 300 is fixedly connected to the top of the damping mechanism 200, used for mounting the clamping mechanism 400, the clamping mechanism 400 is connected to the top of the top plate 300;
[0031] Please refer again to Figure 3 The damping mechanism 200 includes a first hydraulic cylinder 210, a connecting plate 220, a second hydraulic cylinder 230, a connecting hose 240, a first spring 250, a sliding rod 260, a pressing block 270, a fixed plate 280, a limiting rod 281, a stress block 290, a second spring 291 and a damper 292;
[0032] Please refer again to Figure 3 The top of the bottom plate 100 is fixedly connected with the first hydraulic cylinder 210 at the four corner edge positions, the top end of the first hydraulic cylinder 210 is fixedly connected with the connecting plate 220, the top of the connecting plate 220 is fixedly connected with the second hydraulic cylinder 230 at the four corner edge positions, the connecting hose 240 is fixedly connected between the first hydraulic cylinder 210 and the second hydraulic cylinder 230, and the middle part between the top of the bottom plate 100 and the bottom of the connecting plate 220 is fixedly connected with the first spring 250;
[0033] Please refer again to Figure 3 The middle part of the front and back part of the bottom of the top plate 300 is fixedly connected with the sliding rod 260, the middle part of the front and back part of the bottom of the top plate 300 is fixedly connected with the pressing block 270, the top of the connecting plate 220 is fixedly connected with the fixed plate 280 in a symmetrical manner, the limiting rod 281 is fixedly connected between the opposite sides of the fixed plate 280 of the left and right parts in a symmetrical manner, the stress block 290 is slidably connected to the outer side wall of the limiting rod 281 in a symmetrical manner, the second spring 291 is fixedly connected to the bottom of the mutually faraway side of the stress block 290 of the left and right parts in a symmetrical manner, and the damper 292 is fixedly connected to the middle part of the bottom of the mutually faraway side of the stress block 290 of the left and right parts.
[0034] As can be seen from the above, when the elevator is lowered to the limit of the top plate 300, the top plate 300 is pressed, so that the top plate 300 is lowered, driving the pressing block 270 to be lowered, the stress block 290 is pressed, so that the stress block 290 moves away from each other, the second spring 291 and the damper 292 are pressed, the preliminary buffering is performed through the deformation of the second spring 291, and then when the top plate 300 presses the second hydraulic cylinder 230, the hydraulic oil in the second hydraulic cylinder 230 enters the first hydraulic cylinder 210, so that the connecting plate 220 rises, driving the first spring 250 to be stretched, and the buffering is performed again through the stretching of the first spring 250, so that multiple buffering is realized, the damping effect is improved, and the stability during the lowering limit is ensured.
[0035] Please refer again to Figure 3The bottom end of the slide rod 260 penetrates the bottom of the connecting plate 220, and the slide rod 260 is in sliding connection with the connecting plate 220, and the bottom end of the slide rod 260 is fixedly connected with the baffle.
[0036] Please refer again to Figure 3 The other end of the second spring 291 is fixedly connected to the inner side of the fixed plate 280, and the second spring 291 is sleeved on the outer side of the limiting rod 281, and the other end of the damper 292 is fixedly connected to the inner side of the fixed plate 280.
[0037] Please refer again to Figure 3 The left and right sides of the extrusion block 270 and the opposite sides of the stress block 290 on the left and right sides are provided with inclined surfaces.
[0038] Please refer again to Figure 5 The clamping mechanism 400 comprises a mounting groove 410, a limiting groove 411, a connecting block 420, a double-shaft motor 430, a threaded rod 440, a sliding block 450, a limiting block 460 and a clamping block 470. The mounting groove 410 is formed in the top middle part of the top plate 300, the limiting grooves 411 are formed in the left and right parts of the front and rear sides of the mounting groove 410, the connecting blocks 420 are fixedly connected to the middle parts of the front and rear sides of the mounting groove 410, the double-shaft motor 430 is fixedly connected between the opposite sides of the connecting blocks 420 on the front and rear parts, the threaded rod 440 is rotatably connected to the middle parts of the left and right sides of the mounting groove 410 through a bearing, the sliding block 450 is threadedly connected to the outer side wall of the threaded rod 440, the limiting block 460 is fixedly connected to the middle parts of the front and rear sides of the sliding block 450, and the clamping block 470 is fixedly connected to the top of the sliding block 450.
[0039] Please refer again to Figure 5 The input end of the double-shaft motor 430 is electrically connected with the output end of the external power supply, the output shaft end of the double-shaft motor 430 is fixedly connected with the other end of the threaded rod 440, and the limiting block 460 is in sliding connection with the inside of the limiting groove 411.
[0040] As described above, after the elevator contacts the top plate 300, the double-shaft motor 430 is started to drive the threaded rod 440 to rotate, and the limiting block 460 cooperates with the limiting groove 411 to drive the sliding block 450 to move closer to each other when the threaded rod 440 rotates, thereby driving the clamping block 470 to move closer to each other to clamp the elevator, thereby avoiding the shaking of the elevator and further ensuring the stability of the elevator, facilitating the maintenance of the elevator.
[0041] In specific use, the person skilled in the art will limit the elevator when the elevator is lowered onto the top plate 300, the top plate 300 is extruded, the top plate 300 is lowered, the extrusion block 270 is lowered, the stress block 290 is extruded, the second spring 291 and the damper 292 are extruded, the second spring 291 is deformed to preliminarily buffer, then when the top plate 300 extrudes the second hydraulic cylinder 230, the hydraulic oil in the second hydraulic cylinder 230 enters the first hydraulic cylinder 210, the connecting plate 220 rises, the first spring 250 is stretched, the first spring 250 is stretched again to buffer, multiple buffering is realized, then the double-shaft motor 430 is started, the threaded rod 440 is rotated, the limiting block 460 and the limiting groove 411 are matched, when the threaded rod 440 rotates, the sliding block 450 is close to each other, so that the clamping block 470 is close to each other, the elevator is clamped.
[0042] In the description of the present application, the description of the terms "one embodiment", "some embodiments", "illustrative embodiment", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the description of the present application, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.
[0043] Although the embodiments of the present application have been shown and described, those skilled in the art can understand that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and purposes of the present application, and the scope of the present application is defined by the claims and their equivalents.
Claims
1. An elevator maintenance car positioner having a shock absorbing structure, characterized by: The utility model provides a kind of shock-absorbing device, including bottom plate (100), damping mechanism (200), top plate (300) and clamping mechanism (400), the damping mechanism (200) is connected on the top of the bottom plate (100), the top plate (300) is fixedly connected on the top of the damping mechanism (200), the clamping mechanism (400) is connected on the top of the top plate (300), the damping mechanism (200) includes first hydraulic cylinder (210), connecting plate (220), second hydraulic cylinder (230), connecting hose (240), first spring (250), slide bar (260), extrusion block (270), fixed plate (280), limit rod (281), force block (290), second spring (291) and damper (292), the top of the bottom plate (100) is fixedly connected with first hydraulic cylinder (210) in four corners edge position, the top of the first hydraulic cylinder (210) is fixedly connected with connecting plate (220), the top of the connecting plate (220) is fixedly connected with second hydraulic cylinder (230) in four corners edge position, connecting hose (240) is fixedly connected between the first hydraulic cylinder (210) and the second hydraulic cylinder (230), first spring (250) is fixedly connected between the top of the bottom plate (100) and the bottom of the connecting plate (220) in the middle, slide bar (260) is fixedly connected in the middle of front and back of the bottom of the top plate (300), extrusion block (270) is fixedly connected in the middle of front and back of the bottom of the top plate (300), fixed plate (280) is fixedly connected with symmetry on the top of the connecting plate (220), limit rod (281) is fixedly connected with symmetry between the opposite sides of the fixed plate (280) of left and right, force block (290) is slidably connected with symmetry on the outer side wall of the limit rod (281), second spring (291) is fixedly connected with symmetry on the bottom of the mutually far side of the force block (290) of left and right, damper (292) is fixedly connected in the middle of bottom of the mutually far side of the force block (290) of left and right.
2. The elevator maintenance car positioner with a shock absorbing structure according to claim 1, characterized in that: The bottom end of the slide bar (260) penetrates the bottom of the connecting plate (220), and the slide bar (260) is slidably connected with the connecting plate (220), and the bottom end of the slide bar (260) is fixedly connected with the baffle.
3. The elevator maintenance car positioner with a shock absorbing structure according to claim 1, characterized in that: The other end of the second spring (291) is fixedly connected to the inner side of the fixed plate (280), and the second spring (291) is sleeved on the outer side of the limit rod (281), and the other end of the damper (292) is fixedly connected to the inner side of the fixed plate (280).
4. The elevator maintenance car positioner with a shock absorbing structure according to claim 1, characterized in that: The opposite sides of the force block (290) of left and right sides and left and right parts of the extrusion block (270) are provided with inclined surfaces.
5. The elevator maintenance car positioner with shock absorbing structure according to claim 1, wherein: Said clamping mechanism (400) includes installation slot (410), limiting slot (411), connecting block (420), double-shaft motor (430), threaded rod (440), sliding block (450), limiting block (460) and clamping block (470), the middle part of the top of the top plate (300) is provided with installation slot (410), the left and right parts of the front and back sides of the installation slot (410) are provided with limiting slot (411), the middle part of the front and back sides of the installation slot (410) is fixedly connected with connecting block (420), the opposite sides of the front and back connecting blocks (420) are fixedly connected with double-shaft motor (430), the middle part of the left and right sides of the installation slot (410) is rotatably connected with threaded rod (440) through bearing, the outer side wall of the threaded rod (440) is threadedly connected with sliding block (450), the middle part of the front and back sides of the sliding block (450) is fixedly connected with limiting block (460), and the top of the sliding block (450) is fixedly connected with clamping block (470).
6. The elevator maintenance car positioner with shock absorbing structure according to claim 5, wherein: The input end of the double-shaft motor (430) is electrically connected with the output end of the external power supply, and the output shaft end of the double-shaft motor (430) is fixedly connected with the other end of the threaded rod (440), and the limiting block (460) is slidably connected in the limiting slot (411).