CN109466988B

CN109466988B - Elevator damping device

Info

Publication number: CN109466988B
Application number: CN201811520325.7A
Authority: CN
Inventors: 徐晖
Original assignee: 浙江鲸叹科技有限公司
Current assignee: Zhejiang Jingtan Technology Co ltd
Priority date: 2018-12-12
Filing date: 2018-12-12
Publication date: 2020-07-28
Anticipated expiration: 2038-12-12
Also published as: CN109466988A

Abstract

The invention discloses an elevator shaft, wherein a lead screw is arranged in the elevator shaft, a speed sensor is arranged in the elevator shaft, a first motor, a first speed reducer, a worm and a shell are arranged on the left side of a car, the lead screw penetrates through the shell, a worm wheel is arranged in the shell, the lead screw penetrates through the worm wheel and is in threaded connection with the worm wheel, the output end of the first motor is connected with the input end of the first speed reducer, the output end of the first speed reducer is connected with the worm, the worm extends into the shell and is matched with the worm wheel, the car can be ensured to ascend and descend more stably in a driving mode of the lead screw and the worm wheel, and meanwhile, self-locking. The elevator shaft bottom is equipped with damper, and damper is equipped with four, and the elevator shaft bottom is equipped with the second motor, and the second motor passes through drive mechanism and is connected with four damper, and four damper rotate in step, only need a motor can accomplish the action, reduce cost, and the practicality is good.

Description

Elevator damping device

Technical Field

The invention relates to the technical field of elevator falling prevention, in particular to an elevator damping device.

Background

Along with the rapid development of national economy and urbanization construction, various high-rise buildings are pulled out. The elevator becomes a necessary carrying device in people's life. But many old building buildings before do not have the elevator, consequently old building installs the elevator additional demand very big now, and the villa also needs to install the elevator simultaneously, and old building is the multilayer about six layers usually, and the number of piles of villa and old building is lower.

The existing elevator car is lifted and lowered by adopting a steel wire rope, the lifting and lowering mode is poor in stability, the car can shake in the starting and stopping processes, if the steel wire rope breaks, the falling accident can be caused, the safety performance is poor, meanwhile, the existing elevator shaft bottom is provided with a damping mechanism, but the existing damping mechanism is mostly fixedly arranged, a large space is occupied, the elevator shaft needs to be dug downwards deeply to install the damping mechanism, and the construction difficulty and the construction cost are increased.

Disclosure of Invention

The invention aims to solve the problems and provides an elevator damping device which can well avoid the problem of shaking of a car in the stopping and starting processes, reduce the possibility of falling into a well, and meanwhile, a damping mechanism can rotate, so that the space is not occupied, and the construction cost is reduced.

The technical scheme adopted by the invention for solving the technical problems is as follows:

a kind of lift damping device, there are lead screws in the lift shaft, there are speed inductors in the lift shaft, not seen in the figure, there are first electrical machinery, first decelerator, worm and body on the left of lift car, the lead screw passes the body, there are worm gears in the body, the lead screw passes the worm gear and connects with screw thread between the worm gears, the first electrical machinery output end is connected with first decelerator input end, the first decelerator output end is connected with worm, the worm goes deep into the body and cooperates with worm gear;

the damping mechanism comprises a sleeve, a telescopic rod and a compression spring, the lower end of the telescopic rod extends into the sleeve and is in sliding connection with the sleeve, the compression spring is sleeved on the telescopic rod, a baffle is arranged at the upper end of the telescopic rod, the upper end of the compression spring is in contact with the baffle, the lower end of the compression spring is in contact with the upper end of the sleeve, a disc is arranged at the lower end of the sleeve, a supporting base is arranged below the sleeve, an arc groove is arranged on the supporting base and concentric with the disc, and the arc groove is matched with the disc;

the damping mechanisms are four, the bottom of the elevator shaft is provided with a second motor, the second motor is connected with the four damping mechanisms through a transmission mechanism, the second motor and the transmission mechanism are both positioned in the pit, the transmission mechanism comprises a first transmission rod and a second transmission rod, the second motor is connected with the first transmission rod, the second transmission rods are two, the two second transmission rods are symmetrically distributed at two ends of the first transmission rod, the first transmission rod and the second transmission rod are connected through a bevel gear, and the end parts of the second transmission rods are connected with the center of the disc.

Furthermore, the left end of the car is provided with an installation plate, and the installation plate is fixed in the middle of the left side face of the car.

Furthermore, sliding blocks are arranged on two sides of the lift car, a sliding way is arranged in the lift shaft, and the sliding blocks are matched with the sliding way.

Furthermore, a limit switch is arranged on the side wall of the pit.

Further, a second speed reducer is arranged between the second motor and the first transmission rod.

Furthermore, a cover plate is arranged at the position, corresponding to the damping mechanism, of the upper end of the pit, the lower end of the cover plate is hinged to the upper edge of the pit, and the middle position of the cover plate is connected with the sleeve.

Furthermore, a connecting rod is arranged between the cover plate and the sleeve, one end of the inner side of the connecting rod is connected with the sleeve through a universal joint, the cover plate is provided with a long hole, one end of the outer side of the connecting rod penetrates through the long hole, and the connecting rod is provided with rollers at the upper end and the lower end of the cover plate.

Further, the connecting rod includes first connecting rod and second connecting rod, is equipped with a pair of gyro wheel on the first connecting rod, is equipped with a pair of gyro wheel on the second connecting rod, and first connecting rod lower extreme is equipped with square arch, and second connecting rod upper end is equipped with square groove, and square arch and square groove cooperation are fixed through bumping the pearl between square arch and the square groove.

The invention has the beneficial effects that:

1. the elevator car lifting device can ensure that the elevator car can lift more stably in a mode of driving the lead screw and the worm gear, and meanwhile, self-locking can be formed in a mode of driving the elevator car to lift through the lead screw, so that the elevator car is prevented from falling, and the reliability is good.

2. The four damping mechanisms are arranged, the second motor is arranged at the bottom of the elevator shaft and connected with the four damping mechanisms through the transmission mechanism, the four damping mechanisms rotate synchronously, only one motor is needed to complete the action, the cost is reduced, and the practicability is good.

3. In the normal operating process of elevator, the sleeve is in the horizontality, and the sleeve is arranged in the pit, does not occupy the space of elevartor shaft, has reduced the lower digging depth of elevartor shaft, the construction degree of difficulty and the cost of reduction.

4. The support base of sleeve lower extreme can help the support sleeve, can help the second connecting rod to support the car when falling into the well, is equipped with the circular arc groove on the support base, and circular arc groove and disc cooperation, circular arc groove can not influence the sleeve and rotate, and the practicality is good.

5. A connecting rod is arranged between a cover plate and a sleeve, one end of the inner side of the connecting rod is connected with the sleeve through a universal joint, a long hole is formed in the cover plate, one end of the outer side of the connecting rod penetrates through the long hole, and rollers are arranged at the upper end and the lower end of the cover plate on the connecting rod; the gyro wheel can reduce the frictional force between apron and the connecting rod, connects apron and connecting rod through the gyro wheel simultaneously, when the sleeve rotated horizontal position by vertical position, makes the apron along with the sleeve is closed through the pulling of connecting rod, better protection damper, when the sleeve rotated vertical position by horizontal position, the apron was opened thereupon under the effect of connecting rod, and the practicality is good.

6. The connecting rod comprises a first connecting rod and a second connecting rod, a pair of rollers are arranged on the first connecting rod and the second connecting rod, a square protrusion is arranged at the lower end of the first connecting rod, a square groove is arranged at the upper end of the second connecting rod, the square protrusion is matched with the square groove, the square protrusion and the square groove are fixed through a collision bead, when the connecting rod is installed, the second connecting rod firstly penetrates through a long hole, then the square protrusion is inserted into the square groove and is fixed through the collision bead, and a cover plate is clamped through the rollers on the first connecting rod and the second connecting rod, so that the connecting rod is simple and convenient to install.

Drawings

In order to more clearly illustrate the embodiments or technical solutions in the prior art of the present invention, the drawings used in the description of the embodiments or prior art will be briefly described below, and it is obvious for those skilled in the art that other drawings can be obtained based on these drawings without creative efforts.

Fig. 1 is a top plan view of the car of the present invention;

FIG. 2 is a top view of the damping mechanism of the present invention;

FIG. 3 is a cross-sectional view of the damping mechanism of the present invention;

FIG. 4 is a schematic view of the cover plate connection of the present invention;

FIG. 5 is a schematic view of a connecting rod structure according to the present invention;

FIG. 6 is a cross-sectional view of the connection of the first and second links of the present invention.

In the figure: the elevator car comprises a lead screw 401, a car 402, a first motor 403, a first speed reducer 404, a worm 405, a housing 406, a mounting plate 407, a sliding block 408, a sliding way 409, a sleeve 410, an expansion rod 411, a compression spring 412, a baffle 413, a disc 414, a supporting base 415, an arc groove 416, a limit switch 417, a pit 418, a second motor 419, a first transmission rod 420, a second transmission rod 421, a second speed reducer 422, a cover plate 423, a connecting rod 424, a universal joint 425, a long hole 426, a roller 427, a first connecting rod 428, a second connecting rod 429, a square protrusion 430, a square groove 431 and a collision ball 432.

Detailed Description

In order to make those skilled in the art better understand the technical solution of the present invention, the technical solution in the embodiment of the present invention will be clearly and completely described below with reference to the drawings in the embodiment of the present invention, and it is obvious that the described embodiment is only a part of the embodiment of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

As shown in fig. 1 to 6, in the damping device for the elevator, a lead screw 401 is arranged in an elevator shaft, a speed sensor is arranged in the elevator shaft, the elevator shaft is not shown, a first motor 403, a first speed reducer 404, a worm 405 and a shell 406 are arranged on the left side of a car 402, the lead screw 401 penetrates through the shell 406, a worm wheel is arranged in the shell 406, the lead screw 401 penetrates through the worm wheel and is in threaded connection with the worm wheel, the worm wheel is coaxial with the lead screw 401, an inner cylindrical surface of the worm wheel is provided with an inner thread, an output end of the first motor 403 is connected with an input end of the first speed reducer 404 through a coupler, an output end of the first speed reducer 404 is connected with; worm 405 and worm wheel cooperation department are prior art, do not do too much here and describe again, adopt worm wheel and worm complex mode can provide bigger power, when the elevator installation of lower floor such as old building and villa, through lead screw and worm wheel and worm drive's mode, can guarantee that the car goes up and down more steadily, can form the auto-lock through the mode that lead screw drive car goes up and down simultaneously, prevent that the car from weighing down, the good reliability.

Elevator shaft bottom is equipped with damper and pit 418, damper is located pit 418, damper includes sleeve 410, telescopic link 411 and compression spring 412, telescopic link 411 lower extreme go deep into in the sleeve 410 and with sleeve 410 sliding connection, compression spring 412 overlaps on telescopic link 411, telescopic link 411 upper end is equipped with baffle 413, baffle 413 passes through the fix with screw on the telescopic link 411 top, compression spring 412 upper end and baffle 413 contact, compression spring 412 lower extreme and the contact of sleeve 410 upper end, sleeve 410 lower extreme is equipped with disc 414, sleeve 410 below is equipped with support base 415, be equipped with circular arc groove 416 on the support base 415, circular arc groove 416 is concentric with disc 414, circular arc groove 416 and disc 414 cooperation.

The damping mechanisms are four, a second motor 419 is arranged at the bottom of the elevator shaft, the second motor 419 is connected with the four damping mechanisms through transmission mechanisms, the second motor 419 and the transmission mechanisms are located in the pit 418, each transmission mechanism comprises a first transmission rod 420 and a second transmission rod 421, the second motor 419 is connected with the first transmission rods 420, the second transmission rods 421 are two, the two second transmission rods 421 are symmetrically distributed at two ends of the first transmission rods 420, the first transmission rods 420 and the second transmission rods 421 are connected through bevel gears, the end portions of the second transmission rods 421 are connected with the center of the disc 414, and the first transmission rods 420 and the second transmission rods 421 are supported at the bottom end of the pit through bearings and bearing seats.

When a shaft dropping accident occurs, the speed sensor firstly senses the abnormal descending speed of the lift car, and transmits a signal to the controller, the controller controls the second motor 419 to work, the second motor 419 drives the sleeve 410 to rotate through the first transmission rod 420 and the second transmission rod 421, at the moment, the sleeve 410 rotates from a horizontal state to a vertical state, the compression spring 412 in the damping mechanism is used for damping, the four damping mechanisms synchronously rotate, only one motor is needed to complete the action, the cost is reduced, and the practicability is good; in the normal operation process of the elevator, the sleeve 410 is in a horizontal state, and the sleeve 410 is positioned in a pit, so that the space of an elevator shaft is not occupied, the downward digging depth of the elevator shaft is reduced, and the construction difficulty and cost are reduced; the support base 415 of the lower end of the sleeve 410 can help support the sleeve and can help support the car when falling into the well, the arc groove 416 is formed in the support base 415, the arc groove 416 is matched with the disc 414, the rotation of the sleeve cannot be influenced by the arc groove 416, and the practicability is good.

The left end of the car 402 is provided with a mounting plate 407, and the mounting plate 407 is fixed to the middle of the left side surface of the car 402 by bolts.

The elevator car 402 is provided with two sliding blocks 408 on two sides, a sliding way 409 is arranged in the elevator shaft, the sliding blocks 408 are matched with the sliding way 409, the number of the sliding blocks 408 is four, and the number of the sliding blocks is two on the left side and the right side of the car 402.

And a limit switch 417 is arranged on the side wall of the pit 418, the limit switch 417 plays a limiting role, when the sleeve 410 rotates to the vertical direction, the sleeve 410 is contacted with the limit switch 417, the limit switch 417 transmits a signal to a controller, and the controller controls the second motor to brake.

A second speed reducer 422 is arranged between the second motor 419 and the first transmission rod 420.

A cover plate 423 is arranged at the position, corresponding to the damping mechanism, of the upper end of the pit 418, the lower end of the cover plate 423 is hinged to the upper edge of the pit 418, and the middle of the cover plate 423 is connected with the sleeve 410.

A connecting rod 424 is arranged between the cover plate 423 and the sleeve 410, one end of the inner side of the connecting rod 424 is connected with the sleeve 410 through a universal joint 425, a long hole 426 is formed in the cover plate 423, one end of the outer side of the connecting rod 424 penetrates through the long hole 426, and rollers 427 are arranged at the upper end and the lower end of the connecting rod 424 on the cover plate 423. The roller 427 can reduce the friction between the cover plate 423 and the connecting rod 424, and simultaneously the cover plate 423 and the connecting rod 424 are connected through the roller 427, when the sleeve 410 rotates from the vertical position to the horizontal position, the cover plate 423 is closed along with the sleeve through the pulling of the connecting rod 424, the shock absorption mechanism is better protected, and when the sleeve 410 rotates from the horizontal position to the vertical position, the cover plate 423 is opened along with the sleeve under the action of the connecting rod, so that the practicability is good.

The connecting rod 424 comprises a first connecting rod 428 and a second connecting rod 429, a pair of rollers 427 is arranged on the first connecting rod 428, a pair of rollers 427 is arranged on the second connecting rod 429, a square protrusion 430 is arranged at the lower end of the first connecting rod 428, a square groove 431 is arranged at the upper end of the second connecting rod 429, the square protrusion 430 is matched with the square groove 431, the square protrusion 430 and the square groove 431 are fixed through a collision bead 432, the connection mode of the collision bead 432 is the prior art, and redundant description is omitted herein. When the connecting rod is installed, the second connecting rod 429 firstly passes through the long hole 426, then the square protrusion 430 is inserted into the square groove 431 and is fixed through the collision bead 432, and the cover plate 423 is clamped through the rollers 427 on the first connecting rod 428 and the second connecting rod 429, so that the installation is convenient.

In the description of the present invention, it should be noted that the terms "left", "right", "upper", "lower", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; they may be mechanically or electrically connected, directly or indirectly through intervening media, or may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Claims

1. A damping device for an elevator is characterized in that a lead screw (401) is arranged in an elevator shaft, a speed sensor is arranged in the elevator shaft, a first motor (403), a first speed reducer (404), a worm (405) and a shell (406) are arranged on the left side of a car (402), the lead screw (401) penetrates through the shell (406), a worm wheel is arranged in the shell (406), the lead screw (401) penetrates through the worm wheel and is in threaded connection with the worm wheel, the output end of the first motor (403) is connected with the input end of the first speed reducer (404), the output end of the first speed reducer (404) is connected with the worm (405), and the worm (405) extends into the shell (406) and is matched with;

the elevator shaft bottom is provided with a damping mechanism and a pit (418), the damping mechanism is located in the pit (418), the damping mechanism comprises a sleeve (410), an expansion link (411) and a compression spring (412), the lower end of the expansion link (411) extends into the sleeve (410) and is in sliding connection with the sleeve (410), the compression spring (412) is sleeved on the expansion link (411), the upper end of the expansion link (411) is provided with a baffle (413), the upper end of the compression spring (412) is in contact with the baffle (413), the lower end of the compression spring (412) is in contact with the upper end of the sleeve (410), the lower end of the sleeve (410) is provided with a disc (414), a support base (415) is arranged below the sleeve (410), the support base (415) is provided with an arc groove (416), the arc groove (416) is concentric with the disc (414), and the arc;

the damping mechanism is provided with four damping mechanisms, a second motor (419) is arranged at the bottom of the elevator shaft, the second motor (419) is connected with the four damping mechanisms through a transmission mechanism, the second motor (419) and the transmission mechanism are both positioned in the pit (418), the transmission mechanism comprises a first transmission rod (420) and a second transmission rod (421), the second motor (419) is connected with the first transmission rod (420), the number of the second transmission rods (421) is two, the two second transmission rods (421) are symmetrically distributed at two ends of the first transmission rod (420), the first transmission rod (420) is connected with the second transmission rod (421) through a bevel gear, and the end part of the second transmission rod (421) is connected with the center of the disc (414);

the position that pit (418) upper end and damper correspond is equipped with apron (423), and apron (423) lower extreme is gone up along articulated with pit (418), and apron (423) intermediate position is connected with sleeve (410), be equipped with connecting rod (424) between apron (423) and sleeve (410), connecting rod (424) inboard one end is connected through universal joint (425) with sleeve (410), is equipped with rectangular hole (426) on apron (423), and rectangular hole (426) are passed to connecting rod (424) outside one end, and both ends are equipped with gyro wheel (427) about locating apron (423) on connecting rod (424).

2. The elevator shock absorbing device as set forth in claim 1, wherein the car (402) is provided at a left end thereof with a mounting plate (407), the mounting plate (407) being fixed to a left side surface of the car (402) at a middle position thereof.

3. An elevator damping device according to claim 1, characterized in that the car (402) is provided with sliding blocks (408) on both sides, a slide (409) is provided in the elevator shaft, and the sliding blocks (408) are fitted with the slide (409).

4. The elevator shock absorbing device as set forth in claim 1, wherein limit switches (417) are provided on the side walls of the pit (418).

5. An elevator shock absorbing device as defined in claim 1, wherein a second speed reducer (422) is provided between the second motor (419) and the first driving rod (420).

6. The elevator shock absorbing device according to claim 1, wherein the link (424) comprises a first link (428) and a second link (429), a pair of rollers (427) are arranged on the first link (428), a pair of rollers (427) are arranged on the second link (429), a square protrusion (430) is arranged at the lower end of the first link (428), a square groove (431) is arranged at the upper end of the second link (429), the square protrusion (430) is matched with the square groove (431), and the square protrusion (430) is fixed with the square groove (431) through a collision bead (432).