Lift car limiting device for elevator maintenance

Abstract

The utility model relates to the field of elevators, in particular to a lift car limiting device for elevator maintenance, which is arranged in a hoistway and used for supporting a lift car body sliding on a guide rail, and is characterized by comprising a limiting mechanism arranged on the inner bottom wall of the hoistway, and the upper end of the limiting mechanism is in contact with the lower end of the lift car body; wherein the limiting mechanism comprises a limiting assembly arranged on the inner wall of the hoistway, a supporting device is arranged at the lower end of the limiting assembly, a mounting seat is arranged on one side of the limiting assembly, and a positioning rod is slidably connected to the inner side of the mounting seat; by arranging the limiting assembly, supporting and limiting operation can be conducted on the lower end of the lift car body under the action of the limiting assembly, the situation that the whole lift car inclines is reduced when workers maintain the bottom of the lift car, and therefore the operation steps of lift car calibration by the workers are reduced.

Description

Technical Field

[0001] The utility model relates to the field of elevators, in particular to a car limiting device for elevator maintenance. Background Art

[0002] An elevator is a permanent transportation device that serves several specific floors in a building and whose car runs on at least two rigid rails that are perpendicular to the horizontal plane or inclined at an angle of less than 15° to the plumb line. A vertical lift elevator has a car that runs between at least two rigid rails that are perpendicular or inclined at an angle of less than 15°. The size and structure of the car are convenient for passengers to enter and exit or load and unload goods. It is customary to use elevators as a general term for vertical transportation tools in buildings regardless of their driving mode.

[0003] After searching the prior art, it was found that "a car limit device for elevator maintenance" was published with the publication number "CN212863672U". This device reduces the shock of the elevator car by setting equipment at the bottom of the shaft. However, when the bottom beam and related equipment of the elevator car are to be repaired, they need to be disassembled. At this time, since the bottom beam is heavy, the whole car will tilt, increasing the workload of the maintenance personnel.

[0004] Therefore, a car limiting device for elevator maintenance is proposed to solve the above problems. Utility Model Content

[0005] The purpose of the utility model is to provide a car limit device for elevator maintenance in order to solve the above-mentioned problem, thereby improving the problem that the entire car is prone to tilt when the bottom of the car is repaired.

[0006] The utility model achieves the above-mentioned purpose through the following technical solutions: a car limiting device for elevator maintenance, which is arranged in a hoistway and is used to support a car body sliding on a guide rail, including: a limiting mechanism, wherein the limiting mechanism is arranged on the inner bottom wall of the hoistway, and the upper end of the limiting mechanism is in contact with the lower end of the car body; wherein the limiting mechanism includes a limiting component arranged on the inner wall of the hoistway, a supporting device is arranged at the lower end of the limiting component, a mounting seat is arranged on one side of the limiting component, and a positioning rod is slidably connected to the inner side of the mounting seat.

[0007] Preferably, the limit assembly includes an articulated seat fixedly connected to the inner wall of the shaft, an articulated rod is hinged on the inner side of the articulated seat, the other end of the articulated rod is rotatably connected to a fixed ring, an electro-hydraulic push rod is fixedly connected to the inner wall of the fixed ring, and the telescopic end of the electro-hydraulic push rod is fixedly connected to a stop block, and the support limit is adjusted according to the maintenance stop position of the car body by the arranged electro-hydraulic push rod.

[0008] Preferably, the supporting device includes a bottom plate fixedly connected to the bottom wall of the wellbore and a bottom block fixedly connected to the lower end of the electro-hydraulic push rod, the upper end of the bottom plate is fixedly connected to two slide rails, the surface of the slide rails is slidably connected to a supporting wedge block, the upper end inclined surface of the supporting wedge block matches the lower end inclined surface of the bottom block, and the two supporting wedge blocks cooperate with the bottom block at the lower end of the electro-hydraulic push rod to form a stable supporting effect on the electro-hydraulic push rod.

[0009] Preferably, the upper end of the hinged rod at the lower end is fixedly connected with a positioning buckle, and the positioning buckle matches the positioning rod. Under normal conditions, the positioning buckle is limited by the positioning rod so that the hinged rod remains in an upright state to avoid contact with the car body during use.

[0010] Preferably, the upper end of the abutment block contacts the lower end of the car body, and the material of the abutment block is a hard rubber component. Through this material, the effect of auxiliary shock absorption is achieved.

[0011] Preferably, a dust guide groove is provided at the upper end of the bottom plate, and a holder is clamped on the inner side of the dust guide groove, so that the dust guide groove can limit the holder from moving easily.

[0012] Preferably, a fixed rod is passed through the inner side of the holder, and the other end of the fixed rod passes through the two supporting wedges in sequence. The fixed rod can also be set as a threaded rod, which needs to be used in conjunction with a nut.

[0013] Preferably, a plurality of latch teeth are provided at the upper end of the supporting wedge block, and a latch groove is provided on the lower inclined surface of the bottom block. The latch teeth are engaged with the adjacent latch grooves, and the engagement between the latch teeth and the latch grooves increases the stability of the support for the upper car body.

[0014] The beneficial effects of the utility model are:

[0015] 1. By setting a limit component, the lower end of the car body can be supported and limited under the action of the limit component, so as to reduce the overall tilt of the car when the staff is repairing the bottom of the car, thereby reducing the operating steps of the car calibration.

[0016] 2. By setting up the supporting device, the lower end of the limit assembly can be positioned and supported, so that the two supporting wedges can hold and position the lower end of the bottom block. At the same time, the supporting wedges and the lower end hinged rods will form a good supporting structure, thereby increasing the supporting and positioning effect of the device on the limit assembly, thereby ensuring the stability of the car bottom during maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the structure of the utility model;

[0018] Figure 2This is a cross-sectional view of the internal structure of the well of the utility model;

[0019] Figure 3 This is a schematic diagram of the structure of the limit assembly of the utility model;

[0020] Figure 4 This is a schematic diagram of the connection between the bottom block and the electro-hydraulic push rod of the utility model;

[0021] Figure 5 It is a partial explosion schematic diagram of the supporting device of the utility model.

[0022] In the figure: 1, shaft; 2, guide rail; 21, car body; 3, limit mechanism; 31, limit assembly; 311, hinge seat; 312, hinge rod; 313, fixing ring; 314, electro-hydraulic push rod; 315, positioning buckle; 316, abutment block; 32, supporting device; 321, bottom plate; 322, dust guide groove; 323, slide rail; 324, holder; 325, supporting wedge block; 326, bottom block; 327, fixed rod; 33, mounting seat; 34, positioning rod. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] When implementing: Figure 1-5 As shown, a car limit device for elevator maintenance is arranged in a hoistway 1 and used to support a car body 21 sliding on a guide rail 2, comprising: a limit mechanism 3, the limit mechanism 3 is arranged on the inner bottom wall of the hoistway 1, and the upper end of the limit mechanism 3 contacts the lower end of the car body 21; wherein the limit mechanism 3 comprises a limit assembly 31 arranged on the inner wall of the hoistway 1, a support device 32 is arranged at the lower end of the limit assembly 31, a mounting seat 33 is arranged on one side of the limit assembly 31, and a positioning rod 34 is slidably connected to the inner side of the mounting seat 33;

[0025] like Figure 2 , Figure 3 , Figure 4 and Figure 5As shown, the limit assembly 31 includes an articulated seat 311 fixedly connected to the inner wall of the shaft 1, an articulated rod 312 is articulated on the inner side of the articulated seat 311, the other end of the articulated rod 312 is rotatably connected to a fixed ring 313, an electro-hydraulic push rod 314 is fixedly connected to the inner wall of the fixed ring 313, the telescopic end of the electro-hydraulic push rod 314 is fixedly connected to a stop block 316, and the upper end of the lower end articulated rod 312 is fixedly connected to a positioning buckle 315, the positioning buckle 315 matches the positioning rod 34, the upper end of the stop block 316 contacts the lower end of the car body 21, and the material of the stop block 316 is a hard rubber component. Under normal conditions, the limit assembly 31 can keep the electro-hydraulic push rod 314 close to the inner wall of the shaft 1 to maintain a storage state, and at this time, the positioning rod 34 inside the mounting seat 33 can be moved so that the surface of the positioning rod 34 contacts the inner wall of the positioning buckle 315, forming an effect of limiting the position of the lower end articulated rod 312;

[0026] When it is needed, after the maintenance personnel enter the well 1, they can manually translate the positioning rod 34 to release the limiting effect on the positioning buckle 315. At this time, the two hinged rods 312 and the electro-hydraulic push rod 314 cooperate with the inner wall of the well 1 to form a parallelogram structure, so that the electro-hydraulic push rod 314 always maintains a vertical state, and the lower end of the guide rail 2 is limited and supported by driving the electro-hydraulic push rod 314.

[0027] like Figure 2 , Figure 4 and Figure 5 As shown, the supporting device 32 includes a bottom plate 321 fixedly connected to the inner bottom wall of the well 1 and a bottom block 326 fixedly connected to the lower end of the electro-hydraulic push rod 314, the upper end of the bottom plate 321 is fixedly connected to two slide rails 323, the surface of the slide rails 323 is slidably connected to a supporting wedge 325, the upper end inclined surface of the supporting wedge 325 matches the lower end inclined surface of the bottom block 326, a dust guide groove 322 is provided at the upper end of the bottom plate 321, a card seat 324 is clamped on the inner side of the dust guide groove 322, a fixed rod 327 passes through the inner side of the card seat 324, and the other end of the fixed rod 327 passes through the two supporting wedges 325 in sequence, a plurality of teeth are provided on the upper end of the supporting wedge 325, a card slot is provided on the lower end inclined surface of the bottom block 326, and the card teeth are clamped with adjacent card slots. When the electro-hydraulic push rod 314 is adjusted according to the stopping position during maintenance of the car body 21, the bottom block 326 at the lower end of the electro-hydraulic push rod 314 can be supported by two support wedges 325 with different inclination directions. At the same time, with the cooperation of the clamping seat 324 and the dust guide groove 322, the support wedge 325 can be prevented from sliding on the surface of the slide rail 323, thereby maintaining the stability of the positioning support. The opening of the dust guide groove 322 can also form a channel for the outward discharge of particulate impurities between the two slide rails 323, thereby ensuring the smooth sliding of the support wedge 325 on the slide rail 323.

[0028] When the maintenance personnel enter the well 1, they manually operate the translation positioning rod 34 and the positioning buckle 315 to separate the electrohydraulic push rod 314 from the positioning buckle 315, so that the electrohydraulic push rod 314 remains in a vertical state, and the bottom block 326 at the lower end of the electrohydraulic push rod 314 is formed with a clamping support by two supporting wedge blocks 325 with different inclined directions. Under the cooperation of the clamping seat 324 and the dust guide groove 322, the supporting wedge block 325 is prevented from sliding on the surface of the slide rail 323. The opening of the dust guide groove 322 also forms a channel for the particle impurities between the two slide rails 323 to be discharged outwardly. When the electrohydraulic push rod 314 is adjusted according to the position where the car body 21 stops during maintenance, the lower end of the guide rail 2 can be limited by driving the electrohydraulic push rod 314.

[0029] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A car limiter for elevator maintenance, arranged in a hoistway (1), used to support a car body (21) sliding on a guide rail (2), characterized in that: include: A limiting mechanism (3), wherein the limiting mechanism (3) is arranged on the inner bottom wall of the hoistway (1), and the upper end of the limiting mechanism (3) contacts the lower end of the car body (21); The limiting mechanism (3) comprises a limiting assembly (31) arranged on the inner wall of the well (1), a supporting device (32) is arranged at the lower end of the limiting assembly (31), a mounting seat (33) is arranged on one side of the limiting assembly (31), and a positioning rod (34) is slidably connected to the inner side of the mounting seat (33).

2. The elevator car limit device for maintenance according to claim 1, characterized in that: The limit assembly (31) comprises an articulated seat (311) fixedly connected to the inner wall of the well (1); a hinged rod (312) is hingedly connected to the inner side of the articulated seat (311); the other end of the articulated rod (312) is rotatably connected to a fixed ring (313); an electro-hydraulic push rod (314) is fixedly connected to the inner wall of the fixed ring (313); and a telescopic end of the electro-hydraulic push rod (314) is fixedly connected to a stop block (316).

3. The elevator car limiter for maintenance according to claim 2, characterized in that: The support device (32) comprises a bottom plate (321) fixedly connected to the inner bottom wall of the well (1) and a bottom block (326) fixedly connected to the lower end of the electro-hydraulic push rod (314); the upper end of the bottom plate (321) is fixedly connected to two slide rails (323); the surface of the slide rail (323) is slidably connected to a support wedge block (325); the upper end inclined surface of the support wedge block (325) matches the lower end inclined surface of the bottom block (326).

4. The elevator car limiter for maintenance according to claim 2, characterized in that: The upper end of the hinged rod (312) at the lower end is fixedly connected with a positioning buckle (315), and the positioning buckle (315) matches the positioning rod (34).

5. The elevator car limiter for maintenance according to claim 2, characterized in that: The upper end of the abutment block (316) contacts the lower end of the car body (21), and the material of the abutment block (316) is a hard rubber component.

6. The elevator car limiter for maintenance according to claim 3, characterized in that: A dust guide groove (322) is provided at the upper end of the bottom plate (321), and a holder (324) is clamped on the inner side of the dust guide groove (322).

7. The elevator car limiter for maintenance according to claim 6, characterized in that: A fixed rod (327) passes through the inner side of the clamping seat (324), and the other end of the fixed rod (327) passes through the two supporting wedge blocks (325) in sequence.

8. The elevator car limiter for maintenance according to claim 3, characterized in that: The upper end of the supporting wedge block (325) is provided with a plurality of latching teeth, and the lower end inclined surface of the bottom block (326) is provided with latching grooves, and the latching teeth are latched with adjacent latching grooves.

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