CN211393449U

CN211393449U - Anti-falling device of construction elevator

Info

Publication number: CN211393449U
Application number: CN201921880562.4U
Authority: CN
Inventors: 陆任松; 盛民
Original assignee: Guangzhou Te Wei Eng Machinery Co ltd
Current assignee: Guangzhou Te Wei Eng Machinery Co ltd
Priority date: 2019-11-04
Filing date: 2019-11-04
Publication date: 2020-09-01
Anticipated expiration: 2029-11-04

Abstract

The utility model discloses a construction elevator anti-falling device relates to the architectural equipment field, the test platform comprises a support, the frame is fixed to be set up on the car curb plate, the frame is connected with the casing, the inside rectangular shape spout that is equipped with of casing, be equipped with the master gear axle that can follow the spout in the activity from top to bottom in the spout, be equipped with the master gear on the master gear axle, still be equipped with a pair of drive gear that sets up side by side in the casing, drive gear supports through the transmission gear post that sets up in the casing, wherein keeps away from the drive gear of master gear meshes with the driven gear who sets up in the casing, driven gear and the coaxial setting of rotary disk to it is fixed through the driven shaft, be equipped with on the rotary disk can be at the internal rotation pawl device of certain angular range. The anti-falling effect is realized by the short braking distance when the elevator suddenly falls.

Description

Anti-falling device of construction elevator

Technical Field

The utility model relates to a construction equipment field especially relates to a construction elevator anti-falling device.

Background

In the building site construction, because building height, a lot of building sites all can be equipped with construction elevator, and the elevator accident of falling all can take place for a lot of building sites in operation process. Often, because the security management system is not sound, the security responsibility execution is not strict and the regular or irregular security check is not carried out; the security condition of the equipment is not checked by the rental department; the installation unit does not pay attention to the lifting operation of the construction elevator, the lifting operation is completed by non-professional personnel of a general packaging unit or a leasing unit, or the construction elevator is delivered without experience after the lifting operation. In addition, project supervision does not have professional knowledge of hoisting equipment, so that safety supervision work cannot fall to a real place. The construction unit does not pay enough attention to the equipment foundation, such as the equipment is installed on a soft foundation and is not disposed, or the equipment is installed on a top plate of a basement and is not reinforced under the plate according to the regulation. Secondly, the guide rail frame is installed, the verticality of the guide rail frame is not measured in two directions during installation, or the wall-attached frame is not firmly attached, a connecting bolt of the guide rail frame is not a high-strength bolt specified by a specification, and when the ladder cage runs, the distance between the ladder cage and obstacles such as a scaffold, an unloading platform and a protective scaffold is less than 0.25 m, so that interference can be caused.

The construction elevator can be safely operated by carrying people and objects, and the safety factor is greatly improved because the construction elevator is provided with the anti-falling safety device. At present, a gear and rack driven elevator for both man and goods construction is widely used in a building construction site and is generally provided with a gear cone drum-shaped progressive anti-falling safety device.

The main devices forming the gear cone drum-shaped progressive anti-falling safety device are as follows: gears, centrifugal governor and cone drum brake. When the descending running speed of a protection target (a construction elevator cage) reaches a calibrated action speed, a throwing block of a centrifugal speed limiting device is displaced (equivalent to a pawl) to drive a cone drum (equivalent to a ratchet wheel) to move towards a brake belt, contact and generate brake torque, meanwhile, a disc spring group is compressed, the magnitude of the compression amount is measured, and the brake distance of the rated brake load can be judged through calculation.

The traditional anti-falling device is long in braking distance and complex in structure, and stops suddenly at a high speed for people in the elevator car, so that the people cannot be prevented from being collided by sundries in the car and being damaged.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a construction elevator anti-falling device, through the structure setting to anti-falling device, can satisfy the in-process that falls suddenly, can stop the car through it to when the car upward movement, do not influence the motion of car. The anti-falling effect is realized by the short braking distance when the elevator suddenly falls.

In order to solve the problems, the utility model discloses an anti-falling device of a construction elevator, which is used for using a rack-and-pinion structure as an elevator of a power transmission mode and is fixed on a car side plate and comprises a frame, wherein the frame is fixedly arranged on the car side plate, the frame is connected with a casing, a strip-shaped chute is arranged inside the casing, a main gear shaft which can move up and down along the chute is arranged in the chute, a main gear is arranged on the main gear shaft, a pair of transmission gears which are arranged side by side are also arranged in the casing, the transmission gears are supported by a transmission gear column arranged in the casing, wherein the transmission gear far away from the main gear is meshed with a driven gear arranged in the casing, the driven gear is coaxially arranged with a rotating disc and is fixed by a driven shaft, a pawl device which can rotate within a certain, and a ratchet wheel which is matched with the pawl and is arranged on the shell.

Further, the machine shell is connected with the car side plate through a bolt, and the main gear passes through an opening of the car side plate.

Further, the gear ratio of the pair of transmission gears is 1: 1.

further, the number of teeth of the main gear is greater than that of the transmission gears, and the number of teeth of the transmission gears is greater than that of the driven gears.

Furthermore, the pawl device comprises pawls which are fixed on the rotating disc and are arranged oppositely and symmetrically, the pawls are fixed on the rotating disc through rotating columns, a spring is arranged at the tail end of any one pawl, the other end of the spring is fixed on the rotating disc, a connecting piece is arranged at the front end of each pawl, and the connecting piece is connected with the tail end of the other pawl.

Furthermore, the connecting piece is made of metal, and the connecting piece is connected with the connecting end of the pawl in a shaft mode.

The beneficial effects of the utility model reside in that:

through the structure setting to anti-falling device, can satisfy the in-process that falls suddenly, can stop the car through it, when the car glides suddenly, the master gear continues to drive driven gear and then makes the rotary disk rotatory behind the drive gear, under the effect of centrifugal force, the outside expansion of pawl blocks the ratchet and makes whole stop, and when the car upward movement, under the effect of pulling force, the master gear breaks away from with drive gear along with master gear shaft downstream, consequently at the lift in-process that rises with higher speed, do not influence the motion of car. The anti-falling effect is realized by the short braking distance when the elevator suddenly falls.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It is obvious that the drawings in the following description are some embodiments of the invention, and that for a person skilled in the art, other drawings can be derived from them without inventive effort.

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a view of the arrangement of the transmission gear under the rotating disk of the present invention.

Fig. 3 is a schematic view of the detent mechanism of the present invention in operation.

Fig. 4 is a schematic diagram of the elevator of the present invention during upward operation.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the drawings in the embodiments of the present invention are combined below to clearly and completely describe the technical solutions in the embodiments of the present invention. It is to be understood that the embodiments described are only some of the embodiments of the present invention, and not all of them. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

The first embodiment is as follows:

as shown in fig. 1 and 2, the falling preventing device for construction elevator is used for using a rack-and-pinion structure as the elevator of power transmission mode, and is fixed on the side plate of the car, and comprises a frame 1, the frame is fixedly arranged on the side plate of the car, the frame is connected with a casing 2, a long strip chute 3 is arranged in the casing, a main gear shaft 4 which can move up and down in the chute is arranged in the chute, a main gear 5 is arranged on the main gear shaft, a pair of transmission gears 6 which are arranged in parallel are also arranged in the casing, the transmission gears are supported by a transmission gear column 7 arranged in the casing, wherein the transmission gear far away from the main gear is meshed with a driven gear arranged in the casing, the driven gear is coaxially arranged with a rotating disk 8 and is fixed by a driven shaft 9, a pawl device 10 which can rotate in a certain angle, and a ratchet 11 fitted with the pawl and provided on the housing.

Further, the housing is connected to the car side plate 12 by bolts, and the main gear passes through an opening of the car side plate. Wherein the gear ratio of the pair of transmission gears is 1: 1. the number of the teeth of the main gear is greater than that of the teeth of the transmission gear, and the number of the teeth of the transmission gear is greater than that of the teeth of the driven gear. The pawl device 10 comprises pawls 91 which are fixed on the rotating disc and are symmetrically arranged in opposite directions, the pawls are fixed on the rotating disc through rotating columns 92, a spring 93 is arranged at the tail end of any one pawl, the other end of the spring is fixed on the rotating disc, and a connecting piece 94 is arranged at the front end of each pawl and is connected with the tail end of the other pawl. The connecting piece is made of metal materials, and the connecting piece is connected with the connecting end of the pawl in a shaft mode.

As shown in fig. 3 and 4, through the structural arrangement of the anti-falling device, the situation that the car stops in the process of sudden falling can be met, when the car suddenly slides downwards, the main gear drives the transmission gear and then continuously drives the driven gear to further enable the rotating disc to rotate, under the action of centrifugal force, the pawl outwards expands to clamp the ratchet wheel so as to stop the whole car, and when the car moves upwards, the main gear moves downwards along with the main gear shaft under the action of dragging force and is separated from the transmission gear, so that the movement of the car is not influenced in the process of accelerating the rising of the elevator. The anti-falling effect is realized by the short braking distance when the elevator suddenly falls.

The above-mentioned embodiments are only for describing the preferred embodiments of the present invention, and are not intended to limit the scope of the present invention, and various modifications and improvements made to the technical solution of the present invention by those skilled in the art without departing from the spirit of the present invention should fall within the protection scope defined by the claims of the present invention.

Claims

1. The utility model provides a construction elevator anti-falling device for use rack and pinion formula structure as the lift of power transmission mode, and be fixed in on the car curb plate, its characterized in that: comprises a machine base (1), the machine base is fixedly arranged on a side plate of the car, the machine base is connected with a machine shell (2), a strip-shaped sliding groove (3) is arranged in the machine shell, a main gear shaft (4) which can move up and down along the inside of the sliding chute is arranged in the sliding chute, a main gear (5) is arranged on the main gear shaft, a pair of transmission gears (6) which are arranged in parallel are also arranged in the machine shell and are supported by a transmission gear column (7) arranged in the machine shell, wherein a transmission gear far away from the main gear is meshed with a driven gear (13) arranged in the machine shell, the driven gear is coaxially arranged with the rotating disk (8), and the rotating disc is fixed by a driven shaft (9), and a pawl device (10) capable of rotating within a certain angle range and a ratchet wheel (11) matched with the pawl and arranged on the machine shell are arranged on the rotating disc.

2. The construction elevator fall arrest device according to claim 1, wherein: the casing with car curb plate (12) pass through bolted connection, just master gear passes through the opening of car curb plate.

3. The construction elevator fall arrest device according to claim 1, wherein: the gear ratio of the pair of transmission gears is 1: 1.

4. the construction elevator fall arrest device according to claim 1, wherein: the number of teeth of the main gear is greater than that of the transmission gear, and the number of teeth of the transmission gear is greater than that of the driven gear.

5. The construction elevator fall arrest device according to claim 1, wherein: the pawl device (10) comprises pawls (91) which are fixed on the rotating disc and are symmetrically arranged in opposite directions, the pawls are fixed on the rotating disc through rotating columns (92), a spring (93) is arranged at the tail end of any one pawl, the other end of the spring is fixed on the rotating disc, a connecting piece (94) is arranged at the front end of each pawl, and the connecting piece is connected with the tail end of the other pawl.

6. The construction elevator fall arrest device according to claim 5, wherein: the connecting piece is made of metal, and the connecting piece is connected with the connecting end of the pawl in a shaft mode.