CN217297093U

CN217297093U - Prevent weighing down type lift

Info

Publication number: CN217297093U
Application number: CN202220452749.XU
Authority: CN
Inventors: 刘小龙
Original assignee: Individual
Current assignee: Individual
Priority date: 2022-03-03
Filing date: 2022-03-03
Publication date: 2022-08-26
Anticipated expiration: 2032-03-03

Abstract

The utility model relates to the technical field of elevators, in particular to an anti-falling type elevator, which comprises a housing, a fixed plate arranged in the housing, a wire spool and an anti-falling device, the anti-falling device comprises a driver, an anti-falling ratchet wheel, a crank, a connecting rod, a driver fixed connection fixed plate, the anti-falling ratchet wheel is coaxially and fixedly connected with the wire spool, two ends of the connecting rod are respectively hinged with an output shaft of the driver and one end of the crank, a corner of the crank is hinged on the fixed plate, the other end of the crank is provided with a ratchet used for matching with the ratchet wheel, the driver can drive the output shaft of the driver to do telescopic motion, further, the crank is driven to rotate through the connecting rod so as to enable the ratchet wheel to be meshed with or disengaged from the anti-falling ratchet wheel, and the downward rotation of the wire spool is braked or relieved from the brake; the utility model provides a pair of prevent weighing down type lift, braking safe and reliable, bearing capacity is strong, and can one-way prevent weighing down the braking.

Description

Anti-falling type elevator

Technical Field

The utility model relates to the technical field of elevators, specifically a prevent weighing down type elevator.

Background

The elevator generally adopts the wire reel to receive and release the suspension wire, and then drags its object of hoist and mount through the suspension wire and goes up and down, for example in stage equipment, in order to obtain specific light effect or sound effect, generally adopt elevator hoist and mount lamps and lanterns or stereo set in order to realize that lamps and lanterns or stereo set possess raising and lowering functions to produce specific stage lighting or sound effect. When the hoist drive hoists the object and reachs the settlement position, the operation of lift stop, avoid the hoists object to drag wire reel antiport and the accident of falling appears at this moment, need set up anti-falling device and prevent weighing down to the wire reel, lifting equipment's anti-falling device now, generally set up braking hole (or set up a fixed connection wire reel in addition and take the brake disc in braking hole) on the wire reel, when the unexpected fast turn of wire reel, its output shaft of controller control driver (generally for cylinder or electromagnetic drive) drive inserts the braking hole and realizes preventing weighing down to the wire reel, this kind of anti-falling device has following problem: during braking, the torque transmitted to the wire spool by the gravity of the hoisting object needs to be completely borne by the output shaft of the driver, the direction of the torque is perpendicular to the axial direction of the output shaft, and the bearing capacity of the output shaft of the driver to the transverse torque is weak, so that the hoisting object is easy to damage after long-term use and is difficult to bear; the output shaft of the driver can be braked only by being inserted into the braking hole, and when the rotating speed of the wire spool is high, the wire spool can not be inserted so as to cause braking failure, so that potential safety hazards exist; during braking, the output shaft is inserted into the braking hole, so that the wire spool cannot rotate downwards or upwards, the wire spool cannot rotate upwards only by releasing braking, and the wire spool is inconvenient to use in some special scenes.

SUMMERY OF THE UTILITY MODEL

In order to solve the problem, the utility model aims to provide a braking safe and reliable, bearing capacity is strong, and can one-way prevent weighing down type lift of braking.

The utility model discloses the task is realized through following technical scheme:

an anti-falling elevator, which comprises a machine shell, a fixed plate and a winding device which are arranged in the machine shell, and a wire outlet hole which is arranged at the bottom of the machine shell, the winding device comprises a wire spool and a winding driving mechanism for driving the wire spool to rotate, the anti-falling device is also arranged in the shell and comprises a driver, an anti-falling ratchet wheel, a crank and a connecting rod, the driver is fixedly connected with a fixed plate, the anti-falling ratchet wheel is coaxially and fixedly connected with the wire spool, two ends of the connecting rod are respectively hinged with an output shaft of the driver and one end of the crank, the corner of the crank is hinged on the fixed plate, the other end of the crank is provided with a ratchet for matching with the ratchet wheel, the driver can drive the output shaft of the driver to do telescopic motion, and the connecting rod drives the crank to rotate so as to enable the ratchet to be meshed with or separated from the anti-falling ratchet wheel, and the downward rotation of the wire winding disc is braked or released.

As a preferred technical scheme, the wire spool and the wire winding driving mechanism are also mounted on the fixing plate, and the wire winding driving mechanism comprises a driving motor fixedly mounted on the fixing plate, a driving wheel arranged on an output shaft of the driving motor, a driven wheel coaxially and fixedly connected with the wire spool, and a transmission belt connecting the driving wheel and the driven wheel.

Preferably, the actuator is a cylinder or a telescopic electromagnetic actuator.

Compared with the prior art, the utility model discloses prevent weighing down type lift's beneficial effect is: when the anti-falling device is braked, the output shaft of the anti-falling device is driven to extend out through the driver, and then the crank is driven to rotate through the connecting rod so that the ratchet is meshed with the ratchet wheel, the downward rotation of the wire winding disc is braked, and because the corner of the crank is hinged with the fixed plate, the torque transmitted to the wire winding disc by the gravity of a hoisting object is finally transmitted to the fixed plate by the crank and born by the fixed plate, so that an output shaft of the driver does not need to bear the transverse torque and is not easy to damage, thereby greatly increasing the bearing capacity of the lifter, being not easy to damage after long-term use, being difficult to have the condition of being incapable of being engaged by braking through the engagement of the ratchets and the ratchet wheels, being stable and reliable to brake, and the ratchet only brakes the ratchet wheel to rotate downwards and does not limit the ratchet wheel to rotate upwards, so that the wire spool is not prevented from rotating upwards to lift objects, and the use is convenient and flexible.

Drawings

FIG. 1 is a schematic exploded view of an embodiment of a fall arrest elevator;

fig. 2 is a schematic structural diagram of the falling-prevention type elevator in the embodiment after a machine shell and a wire spool are omitted.

The anti-falling device comprises a machine shell 1, a fixing plate 2, a wire spool 3, a wire winding driving mechanism 4, an anti-falling device 5, a driver 51, an output shaft 511, an anti-falling ratchet wheel 52, a crank 53 and a connecting rod 54.

Detailed Description

The present invention will now be described in further detail with reference to the accompanying drawings. The drawings are simplified schematic drawings, which illustrate the basic structure of the present invention in a schematic manner, and thus show only the components related to the present invention. In the description of the present application, it should be noted that, unless explicitly stated or limited otherwise, the terms "mounted" and "connected" are to be interpreted broadly, e.g., as being either a fixed connection, a removable connection, or an integral connection; may be directly connected or indirectly connected through intervening elements. The specific meaning of the above terms in this application will be understood to be a specific case for those of ordinary skill in the art.

As shown in fig. 1-2, the embodiment provides an anti-falling elevator, which includes a housing 1, a fixing plate 2 and a winding device disposed in the housing 1, and an outlet hole disposed at the bottom of the housing 1, the winding device includes a wire spool 3, and a winding driving mechanism 4 for driving the wire spool 3 to rotate, the housing 1 is further provided with an anti-falling device 5, the anti-falling device 5 includes a driver 51, an anti-falling ratchet 52, a crank 53, and a connecting rod 54, the driver 51 is fixedly connected to the fixing plate 2, the anti-falling ratchet 52 is coaxially and fixedly connected to the wire spool 3, two ends of the connecting rod 54 are respectively hinged to an output shaft 511 of the driver 51 and one end of the crank 53, the crank 53 is in a V-shaped structure, a corner of the crank 53 is hinged to the fixing plate 2, the other end of the crank 53 is provided with a ratchet 511 for cooperating with the ratchet, the driver 51 can drive the output shaft 511 to perform a telescopic motion, and then the crank 53 is driven by the connecting rod 54 to rotate so as to enable the ratchets to be meshed with or separated from the anti-falling ratchet 52, and the brake is carried out or released on the downward rotation of the wire winding disc 3, wherein the driver 51 is an air cylinder or a telescopic electromagnetic driver.

In the anti-falling elevator in the embodiment, during braking, the output shaft 511 of the driver 51 is driven to extend out, the connecting rod 54 drives the crank 53 to rotate so as to enable the ratchet to engage with the ratchet wheel, and the downward rotation of the winding disc 3 is braked, because the corner of the crank 53 is hinged with the fixed plate 2, the torque transmitted to the winding disc 3 by the gravity of a hoisted object is finally transmitted to the fixed plate 2 by the crank 53 and borne by the fixed plate 2, and therefore, the output shaft 511 of the driver 51 does not need to bear transverse torque and is not easy to damage, the bearing capacity of the elevator can be greatly increased, the elevator is not easy to damage after long-term use, the elevator is braked by the engagement of the ratchet wheel and the ratchet wheel, the condition that the ratchet wheel cannot be engaged is not easy to occur, the braking is stable and reliable, the ratchet wheel only brakes the downward rotation of the ratchet wheel, and does not limit the upward rotation of the ratchet wheel, so that the upward rotation of the winding disc 3 is not hindered to lift the object, the use is convenient and flexible.

Wherein fixed plate 2 formula fixed plate 2 as an organic whole, on fixed plate 2, down, a left side, four sides on the right side are equipped with the hem respectively and carry out fixed connection through hem and casing 1, wire reel 3, wire winding actuating mechanism 4, anti-falling device 5 all installs on fixed plate 2, wire winding actuating mechanism 4 includes fixed mounting driving motor on fixed plate 2, the action wheel of setting at driving motor output shaft 511, coaxial fixed connection wire reel 3 from the driving wheel, and connect the action wheel and follow the drive belt of driving wheel, integral type fixed plate 2's bearing capacity is higher, and the structure is more succinct, be convenient for assemble, also make the structural strength of whole lift higher, it is more firm reliable.

The above description is only a preferred embodiment of the application and is illustrative of the principles of the technology employed. It will be understood by those skilled in the art that the scope of the present invention is not limited to the specific combination of the above-mentioned features, but also covers other embodiments formed by any combination of the above-mentioned features or their equivalents without departing from the spirit of the present invention. For example, the above features may be replaced with (but not limited to) features having similar functions disclosed in the present application.

Claims

1. An anti-falling elevator comprises a machine shell, a fixed plate and a winding device which are arranged in the machine shell, and a wire outlet hole which is arranged at the bottom of the machine shell, the winding device comprises a wire spool and a winding driving mechanism for driving the wire spool to rotate, it is characterized in that the shell is also internally provided with an anti-falling device which comprises a driver, an anti-falling ratchet wheel, a crank and a connecting rod, the driver is fixedly connected with a fixed plate, the anti-falling ratchet wheel is coaxially and fixedly connected with the wire spool, two ends of the connecting rod are respectively hinged with an output shaft of the driver and one end of the crank, the corner of the crank is hinged on the fixed plate, the other end of the crank is provided with a ratchet for matching with the ratchet wheel, the driver can drive the output shaft of the driver to do telescopic motion, and the connecting rod drives the crank to rotate so as to enable the ratchet to be meshed with or separated from the anti-falling ratchet wheel, and the downward rotation of the wire winding disc is braked or released.

2. The fall arrest elevator according to claim 1, wherein the spool, the winding drive mechanism, and the winding drive mechanism are also mounted on the fixed plate, the winding drive mechanism including a drive motor fixedly mounted on the fixed plate, a drive pulley disposed on an output shaft of the drive motor, a driven pulley coaxially fixedly connected to the spool, and a drive belt connecting the drive pulley and the driven pulley.

3. The fall arrest elevator according to claim 1, wherein the drive is a pneumatic cylinder or a telescopic electromagnetic drive.