阅读说明：本技术 一种具有自锁保护功能的电梯用大吨位曳引机 (Large-tonnage traction machine with self-locking protection function for elevator ) 是由 顾世龙 于 2021-06-28 设计创作，主要内容包括：本发明公开了一种具有自锁保护功能的电梯用大吨位曳引机,属于大吨位曳引机领域,一种具有自锁保护功能的电梯用大吨位曳引机,在曳引机出现故障,断电之后,止动垫会朝向连接轴运动,直至夹持住连接轴,连接轴只会减缓转动,同时外保护管会在缺口槽的作用下,撕裂止动垫,释放出填充球,此时连接轴与止动垫摩擦产生的热量,会使热熔块融化,并在连接轴与止动垫挤压作用下,释放出热固材料,由于填充球内弹性球壳表面保护纤维簇的作用,使得热固材料不易大量外溢,可以在热量作用下快速固化,锁定住连接轴,可以实现在电梯故障时,大幅降低电梯轿厢制动过程中所产生的加速度,降低对电梯轿厢内部的货物和乘客造成安全威胁。(The invention discloses a large-tonnage traction machine with a self-locking protection function for an elevator, which belongs to the field of large-tonnage traction machines, and is characterized in that a stop pad moves towards a connecting shaft until the connecting shaft is clamped after the traction machine fails and is powered off, the connecting shaft only slows down the rotation, an outer protection tube tears the stop pad under the action of a notch groove to release a filling ball, heat generated by friction between the connecting shaft and the stop pad can melt a hot melting block, a thermosetting material is released under the extrusion action of the connecting shaft and the stop pad, and the thermosetting material is not easy to overflow due to the action of protecting fiber clusters on the surface of an elastic spherical shell in the filling ball, can be quickly cured under the action of heat, lock the connecting shaft and greatly reduce the acceleration generated in the braking process of an elevator car when the elevator fails, the safety threat to the goods and passengers inside the elevator car is reduced.)

1. The utility model provides a large-tonnage hauler for elevator with auto-lock protect function, includes power end (1), the power take off end of power end (1) is connected with transmission end (2), be connected with connecting portion (3) on the lateral wall of transmission end (2), the one end that transmission end (2) were kept away from in connecting portion (3) is connected with driving sheave (4), its characterized in that: the connecting part (3) comprises a connecting shaft (302), two ends of the connecting shaft (302) are respectively connected with a transmission end (2) and a traction sheave (4), an outer protection pipe (301) is sleeved on the outer side of the connecting shaft (302), a pair of sealing bearings (304) is connected between the outer protection pipe (301) and the connecting shaft (302), the two sealing bearings (304) are respectively and fixedly connected with two open ends of the outer protection pipe (301), lubricating oil is filled between the outer protection pipe (301) and the connecting shaft (302), a pair of movable grooves (305) are formed in the inner wall of the outer protection pipe (301), electromagnetic blocks (306) matched with the movable grooves (305) are fixedly connected on the inner wall of the movable grooves (305), a pair of magnetic adsorption sheets (307) matched with the movable grooves (305) are slidably connected in the movable grooves (305), one ends, far away from the movable grooves (305), of the magnetic adsorption sheets (307) are fixedly connected with stop pads (308) matched with the movable grooves (305), the magnetic latching device is characterized in that the stop pad (308) is made of a high-heat-insulating material, a compression spring (313) is fixedly connected between the electromagnetic block (306) and the magnetic absorption sheet (307), an elastic cavity (309) is formed in the stop pad (308) in a chiseled mode, a plurality of filling balls (311) are filled in the elastic cavity (309), the filling balls (311) are distributed in the elastic cavity (309) in a single-layer mode, and thermosetting materials are filled in the elastic cavity (309).

2. The large-tonnage traction machine with the self-locking protection function for the elevator, according to claim 1, is characterized in that: a gap groove (303) matched with the movable groove (305) in position is formed in the outer wall of the connecting shaft (302) in a chiseled mode, and a plurality of spherical protrusions (310) are fixedly connected to one end, close to the connecting shaft (302), of the stop pad (308).

3. The large-tonnage traction machine with the self-locking protection function for the elevator, according to claim 1, is characterized in that: an expansion rod (312) is inserted into the compression spring (313), and two ends of the expansion rod (312) are respectively and fixedly connected with the movable groove (305) and the stop pad (308).

4. The large-tonnage traction machine with the self-locking protection function for the elevator, according to claim 1, is characterized in that: the filling ball (311) comprises an elastic ball shell (5), a filling cavity (6) is formed in the elastic ball shell (5) in a chiseled mode, the thermosetting material is filled in the filling cavity (6), a plurality of liquid outlets (8) are formed in the side wall of the elastic ball shell (5), and the plurality of liquid outlets (8) are filled with hot melting blocks (9).

5. The large-tonnage traction machine with the self-locking protection function for the elevator as recited in claim 4, characterized in that: fill the inside fixedly connected with elasticity skeleton (7) in chamber (6), elasticity skeleton (7) include a plurality of elastic rods, and are a plurality of the mutual overlap joint of elastic rod forms three-dimensional space structure.

6. The large-tonnage traction machine with the self-locking protection function for the elevator as recited in claim 4, characterized in that: the outer side of the elastic spherical shell (5) is fixedly connected with a protective fiber cluster (10), the protective fiber cluster (10) comprises a plurality of elastic fibers, and the elastic fibers are adjacent to each other and intertwined.

7. The large-tonnage traction machine with the self-locking protection function for the elevator as recited in claim 6, characterized in that: the elastic fibers are in a three-dimensional spiral shape, and the elastic fibers are mutually staggered and overlapped to form a three-dimensional space structure.

8. The large-tonnage traction machine with the self-locking protection function for the elevator, according to claim 1, is characterized in that: one end of the protective fiber cluster (10) close to the stop pad (308) extends into the stop pad (308) and is fixedly connected with the stop pad (308).

9. The large-tonnage traction machine with the self-locking protection function for the elevator, according to claim 1, is characterized in that: the outer protection tube (301) is made of transparent materials.

10. The large-tonnage traction machine with the self-locking protection function for the elevator, according to claim 1, is characterized in that: the thermosetting material is doped with a red fluorescent material.

Technical Field

The invention relates to the field of large-tonnage traction machines, in particular to a large-tonnage traction machine with a self-locking protection function for an elevator.

Background

The elevator traction machine is power equipment of an elevator, and is also called an elevator main machine. The function is to transport and transmit power to run the elevator. It is composed of motor, brake, coupling, speed reducer, traction wheel, machine frame, guide wheel and auxiliary handwheel. The guide wheels are typically mounted on the frame or on a load beam below the frame. Some of the barring hand wheels are fixed on the motor shaft, and also hung on a nearby wall at ordinary times, and then sleeved on the motor shaft when in use.

The traction machine is commonly used in the elevator, no matter a goods elevator or a passenger elevator, once the traction machine is out of control and falls down, the safety protection device of the elevator is triggered to control the elevator to decelerate and finally stop, and for the safety consideration of goods and passengers in the goods elevator and the passenger elevator, the decelerating process is always a continuous process, so that the acceleration in the decelerating process of the elevator is not easy to influence the safety of the goods or the passengers.

The existing tractor also has a self-protection function, electromagnets and brake tiles which are matched with each other are arranged at the transmission part of the tractor, after the tractor loses supply, the electromagnets can be powered off and lose magnetism, the brake tiles can move towards the transmission shaft at the transmission part under the action of a compression spring between the electromagnets and the brake tiles until the transmission shaft is locked, the tractor is braked, the whole process is rapid, huge impact can be caused to an elevator car, and safety threats are caused to goods and passengers inside the elevator car.

Disclosure of Invention

1. Technical problem to be solved

Aiming at the problems in the prior art, the invention aims to provide a large-tonnage traction machine with a self-locking protection function for an elevator, which can realize that the traction machine can cooperate with a protection device of an elevator car to perform cooperative braking in the process of stalling and falling of the elevator due to the failure of the elevator, greatly reduce the acceleration generated in the process of braking the elevator car, and reduce the safety threat to goods and passengers in the elevator car.

2. Technical scheme

In order to solve the above problems, the present invention adopts the following technical solutions.

A large-tonnage traction machine with a self-locking protection function for an elevator comprises a power end, wherein a power output end of the power end is connected with a transmission end, a connecting part is connected to the side wall of the transmission end, one end, far away from the transmission end, of the connecting part is connected with a traction wheel, the connecting part comprises a connecting shaft, two ends of the connecting shaft are respectively connected with the transmission end and the traction wheel, an outer protection pipe is sleeved on the outer side of the connecting shaft, a pair of sealing bearings are connected between the outer protection pipe and the connecting shaft, the two sealing bearings are respectively and fixedly connected to two open ends of the outer protection pipe, lubricating oil is filled between the outer protection pipe and the connecting shaft, a pair of movable grooves are chiseled on the inner wall of the outer protection pipe, electromagnetic blocks matched with the movable grooves are fixedly connected to the inner walls of the two movable grooves, and magnetic adsorption sheets matched with the movable grooves are slidably connected with the movable grooves, the one end fixedly connected with and self assorted locking pad that the movable groove was kept away from to the magnetism piece that adsorbs, the locking pad chooses for use high heat-insulating material to make, fixedly connected with compression spring between electromagnetic block and the magnetism piece that adsorbs, it has the elasticity cavity to chisel in the locking pad, the elasticity cavity intussuseption is filled with a plurality of packing balls, and is a plurality of the packing ball is the individual layer and distributes in the elasticity cavity, the elasticity cavity intussuseption is filled with thermosetting material, can realize at elevator trouble, the in-process that the stall tenesmus appears, and the chance that tows cooperates elevator car's protection device to cooperate the braking, reduces the produced acceleration of elevator car braking in-process by a wide margin, reduces and causes the security threat to inside goods of elevator car and passenger.

Furthermore, a notch groove matched with the movable groove in position is formed in the outer wall of the connecting shaft, one end, close to the connecting shaft, of the stopping pad is fixedly connected with a plurality of spherical protrusions, friction force between the connecting shaft and the stopping pad is increased through matching between the spherical protrusions and the notch groove, the stopping pad is enabled to be torn by the connecting shaft more easily, the filling ball is released, the filling ball is crushed, fillers of the filling ball are released, and braking is carried out.

Furthermore, the compression spring is inserted with a telescopic rod, the two ends of the telescopic rod are respectively fixedly connected with the movable groove and the locking pad, and the telescopic rod can protect the compression spring, so that the compression spring is not prone to non-working deformation and failure of the compression spring is not prone to being caused.

Furthermore, the filling ball comprises an elastic ball shell, a filling cavity is formed in the elastic ball shell, the thermosetting material is filled in the filling cavity, a plurality of liquid outlets are formed in the side wall of the elastic ball shell, and thermal frits are filled in the liquid outlets, so that the thermal frits can be melted by utilizing heat generated by friction between the connecting shaft and the magnetic adsorption sheets in the rotating process of the connecting shaft, the thermosetting material filled in the liquid outlets is extruded by extrusion, and is solidified under the action of the heat generated by friction between the connecting shaft and the magnetic adsorption sheets in the rotating process of the connecting shaft, the outer protection tube and the connecting shaft are driven, the tractor cannot be suddenly braked in the whole process, and the lift car is not easily impacted due to sudden speed change.

Furthermore, the inside fixedly connected with elasticity skeleton in packing the chamber, elasticity skeleton includes a plurality of elastic rods, and is a plurality of the mutual overlap joint of elastic rod forms three-dimensional space structure, increases elastic spherical shell overall structure's intensity for elastic spherical shell is difficult for breaking hot melt piece under the external force extrusion, is difficult for leading to thermosetting material to leak in advance.

Furthermore, the outer side of the elastic spherical shell is fixedly connected with a protection fiber cluster, the protection fiber cluster comprises a plurality of elastic fibers, the adjacent elastic fibers are entangled, the protection fiber cluster can form a protection layer on the outer side of the elastic spherical shell, so that the hot melt block is not easily broken by the thermosetting material filled inside due to extrusion between the adjacent elastic spherical shells, and the thermosetting material is not easily caused to leak out in advance.

Furthermore, a plurality of elastic fibers are in a three-dimensional spiral shape, and are mutually staggered and overlapped to form a three-dimensional space structure, so that the protection effect of protecting the fiber clusters is improved.

Furthermore, the end of the protection fiber cluster close to the stop pad extends into the stop pad and is fixedly connected with the stop pad, so that after the stop pad is broken, the whole filling ball is not easy to leak into the gap between the outer protection tube and the connecting shaft, and the subsequent braking effect is not easy to be influenced.

Furthermore, the outer protection tube is made of transparent materials, and a maintainer can observe the specific working environment of the inner structure of the outer protection tube in the daily maintenance process.

Furthermore, the thermosetting material is doped with a red fluorescent material, so that maintenance personnel can conveniently observe the specific working state in the outer protection pipe.

3. Advantageous effects

Compared with the prior art, the invention has the advantages that:

when the tractor breaks down and is powered off, attraction between the electromagnetic block and the magnetic adsorption sheet is lost, the stop pad moves towards the connecting shaft under the action of the compression spring in a compression state until the connecting shaft is clamped, the connecting shaft cannot be completely clamped and fixed due to the high-elasticity material of the stop pad, and the connecting shaft only can slow down rotation.

Simultaneously, the outer protection tube can tear the stop pad under the effect of the notch groove, the filling ball is released, heat generated by friction between the connecting shaft and the stop pad at the moment can melt the hot melting block, and the thermosetting material is released under the extrusion effect of the connecting shaft and the stop pad.

Can realize at elevator trouble, the in-process that the stall tenesmus appears, the hauler cooperates the protection device of elevator car to cooperate the braking, reduces the produced acceleration of elevator car braking in-process by a wide margin, reduces and causes the security threat to inside goods of elevator car and passenger.

Drawings

Fig. 1 is a schematic structural diagram of a large-tonnage traction machine with a self-protection function according to the present invention;

fig. 2 is a front view of a large-tonnage traction machine with a self-protection function according to the present invention;

fig. 3 is a bottom view of the large-tonnage traction machine with self-protection function according to the present invention;

FIG. 4 is a schematic structural diagram of a connecting portion according to the present invention;

FIG. 5 is a schematic top cross-sectional view of a joint according to the present invention;

FIG. 6 is a schematic view of the structure at A in FIG. 5;

FIG. 7 is a front cross-sectional structural view of the connecting portion of the present invention;

FIG. 8 is a schematic view of the structure at B in FIG. 7;

FIG. 9 is a partial front cross-sectional view of the stop pad of the present invention;

fig. 10 is a schematic view of the structure at C in fig. 9.

The reference numbers in the figures illustrate:

the device comprises a power end 1, a transmission end 2, a connecting part 3, an outer protection tube 301, a connecting shaft 302, a notch groove 303, a sealed bearing 304, a movable groove 305, an electromagnetic block 306, a magnetic adsorption sheet 307, a stop pad 308, an elastic cavity 309, a spherical bulge 310, a filling ball 311, a telescopic rod 312, a compression spring 313, a traction wheel 4, an elastic ball shell 5, a filling cavity 6, an elastic framework 7, a liquid outlet 8, a hot melting block 9 and a protective fiber cluster 10.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention; it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and all other embodiments obtained by those skilled in the art without any inventive work are within the scope of the present invention.

In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top/bottom", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplification of 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. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "sleeved/connected," "connected," and the like are to be construed broadly, e.g., "connected," which may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; the connection can be direct connection or indirect connection through an intermediate medium, and can be communication inside the model adapting element. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Example 1:

referring to fig. 1-8, a large-tonnage traction machine for an elevator with a self-locking protection function comprises a power end 1, a power output end of the power end 1 is connected with a transmission end 2, a connecting part 3 is connected to a side wall of the transmission end 2, one end of the connecting part 3, which is far away from the transmission end 2, is connected with a traction sheave 4, the power end 1, the transmission end 2, the connecting part 3 and the traction sheave 4 are all fixed on a frame, in particular, the power end 1 transmits the power of the power output end to the traction sheave 4 through the transmission end 2 and the connecting part 3, the traction sheave 4 is used for driving the traction sheave to drive a car to work, which is a known technology of the skilled person in the art, the skilled person knows the specific arrangement of the internal structures of the power end 1, the transmission end 2, the connecting part 3 and the traction sheave 4, which is not disclosed in detail in the present application, the connecting part 3 comprises a connecting shaft 302, two ends of the connecting shaft 302 are respectively connected with the transmission end 2 and the traction sheave 4, an outer protection tube 301 is sleeved outside the connecting shaft 302, a pair of sealing bearings 304 is connected between the outer protection tube 301 and the connecting shaft 302, the two sealing bearings 304 are respectively and fixedly connected with two open ends of the outer protection tube 301, lubricating oil is filled between the outer protection tube 301 and the connecting shaft 302, a pair of movable grooves 305 are formed in the inner wall of the outer protection tube 301, electromagnetic blocks 306 matched with the two movable grooves 305 are fixedly connected to the inner walls of the two movable grooves 305, magnetic adsorption sheets 307 matched with the two movable grooves are connected in the pair of movable grooves 305 in a sliding mode, stop pads 308 matched with the magnetic adsorption sheets are fixedly connected to one ends, far away from the movable grooves 305, of the magnetic adsorption sheets 307, the stop pads 308 are made of high heat insulation materials, compression springs 313 are fixedly connected between the electromagnetic blocks 306 and the magnetic adsorption sheets 307, elastic cavities 309 are formed in the stop pads 308 in a chiseling mode, and a plurality of filling balls 311 are filled in the elastic cavities, the plurality of filling balls 311 are distributed in a single layer in the elastic cavity 309, and the thermosetting material is filled in the elastic cavity 309.

Can realize at elevator trouble, the in-process that the stall tenesmus appears, the hauler cooperates the protection device of elevator car to cooperate the braking, reduces the produced acceleration of elevator car braking in-process by a wide margin, reduces and causes the security threat to inside goods of elevator car and passenger.

Referring to fig. 5-6, a notched groove 303 matched with the position of the movable groove 305 is formed in the outer wall of the connecting shaft 302, a plurality of spherical protrusions 310 are fixedly connected to one end of the stop pad 308 close to the connecting shaft 302, and through the cooperation between the spherical protrusions 310 and the notched groove 303, the friction force between the connecting shaft 302 and the stop pad 308 is increased, so that the stop pad 308 is more easily torn by the connecting shaft 302, the filling ball 311 is released, the filling ball 311 is crushed, the filling material is released, and braking is performed, a telescopic rod 312 is inserted into the compression spring 313, two ends of the telescopic rod 312 are respectively fixedly connected with the movable groove 305 and the stop pad 308, and the telescopic rod 312 can protect the compression spring 313, so that the compression spring 313 is not easily deformed in a non-working direction, and the compression spring 313 is not easily failed.

Referring to fig. 9-10, the filling ball 311 includes an elastic ball shell 5, a filling cavity 6 is drilled in the elastic ball shell 5, a thermosetting material is filled in the filling cavity 6, a plurality of liquid outlets 8 are drilled on a side wall of the elastic ball shell 5, a plurality of liquid outlets 8 are filled with a thermal fusion block 9, the thermal fusion block 9 is melted by heat generated by friction with the magnetic attraction sheet 307 during rotation of the connecting shaft 302, the thermosetting material filled in the liquid outlets 8 is extruded by extrusion, and is solidified under the action of heat generated by friction with the magnetic attraction sheet 307 during rotation of the connecting shaft 302, the movable outer protection tube 301 and the connecting shaft 302 are driven, the traction machine is not suddenly braked during the whole process, so that the car is not easily impacted due to sudden speed change, an elastic framework 7 is fixedly connected inside the filling cavity 6, the elastic framework 7 includes a plurality of elastic rods, the plurality of elastic rods are mutually overlapped to form a three-dimensional space structure, the strength of the integral structure of the elastic spherical shell 5 is improved, the elastic spherical shell 5 is not easy to break through the hot melt block 9 under the external force extrusion, the thermosetting material is not easy to leak in advance, the protection fiber cluster 10 is fixedly connected to the outer side of the elastic spherical shell 5, the protection fiber cluster 10 comprises a plurality of elastic fibers, the adjacent elastic fibers are entangled together, the protection fiber cluster 10 can form a protection layer on the outer side of the elastic spherical shell 5, the thermosetting material filled inside is not easy to break through the hot melt block 9 under the extrusion between the adjacent elastic spherical shells 5, the thermosetting material is not easy to leak in advance, the elastic fibers are all in a three-dimensional spiral shape, the elastic fibers are mutually staggered and overlapped to form a three-dimensional space structure, the protection effect of the protection fiber cluster 10 is improved, one end, close to the stop pad 308, of the protection fiber cluster 10 extends into the stop pad 308 and is fixedly connected with the stop pad 308, and after the stop pad 308 is broken, the entire filler ball 311 is less likely to leak into the gap between the outer protective tube 301 and the connection shaft 302, and the subsequent braking effect is less likely to be affected.

The outer protection tube 301 is made of transparent materials, a maintainer can observe specific working environment of the inner structure of the outer protection tube 301 in the daily maintenance process, and the thermosetting materials are doped with red fluorescent materials, so that the maintainer can conveniently observe specific working state in the outer protection tube 301.

When the traction machine is in failure and power is off, attractive force between the electromagnetic block 306 and the magnetic adsorption sheet 307 is lost, the stop pad 308 moves towards the connecting shaft 302 under the action of the compression spring 313 in a compression state until the connecting shaft 302 is clamped, the connecting shaft 302 cannot be completely clamped and fixed due to high-elasticity materials of the stop pad 308, the connecting shaft 302 only slows down rotation, meanwhile, the outer protection tube 301 tears the stop pad 308 under the action of the notch groove 303 to release the filling ball 311, heat generated by friction between the connecting shaft 302 and the stop pad 308 at the moment can melt the hot melt block 9, thermosetting materials are released under the extrusion action of the connecting shaft 302 and the stop pad 308, and the thermosetting materials are not easy to overflow due to the action of protecting the fiber cluster 10 on the surface of the elastic spherical shell 5 in the filling ball 311, can be rapidly solidified under the action of external heat in time to lock the connecting shaft 302, the locking of the connecting shaft 302 is completed.

Can realize at elevator trouble, the in-process that the stall tenesmus appears, the hauler cooperates the protection device of elevator car to cooperate the braking, reduces the produced acceleration of elevator car braking in-process by a wide margin, reduces and causes the security threat to inside goods of elevator car and passenger.

The foregoing is only a preferred embodiment of the present invention; the scope of the invention is not limited thereto. Any person skilled in the art should be able to cover the technical scope of the present invention by equivalent or modified solutions and modifications within the technical scope of the present invention.