CN110217664B

CN110217664B - Mechanical triggering device

Info

Publication number: CN110217664B
Application number: CN201910615666.0A
Authority: CN
Inventors: 本村和彦
Original assignee: Nanjing Leyang Zhixun Information Technology Service Co ltd
Current assignee: Nanjing Leyang Zhixun Information Technology Service Co ltd
Filing date: 2019-07-09
Publication date: 2024-07-12
Anticipated expiration: 2039-07-09

Abstract

The invention provides a mechanical triggering device, comprising: rope sheave subassembly, pituitary subassembly, dog subassembly, pawl subassembly. In the mechanical triggering device, the pituitary moves linearly in the speed-limiting operation process; when the pituitary triggers the mechanical screw, an included angle is not formed between the driving rod on the pituitary and the screw on the stop block.

Description

Mechanical triggering device

Technical Field

The invention relates to the technical field of elevators, in particular to a mechanical triggering device.

Background

The speed limiter is one of safety control components in the elevator safety protection system. When the elevator is in operation for whatever reason overspeed of the car occurs, there is even a risk of falling. At this time, after the failure of the main machine, the speed limiter of the elevator safety component acts, and the linkage lifting structure is linked with the safety tongs again to stop the car (counterweight) on the guide rail.

However, the existing speed limiter rope wheel and ratchet wheel are two separated parts, the number of integral parts of the speed limiter is increased, the existing speed limiter ratchet wheel device is connected through a welding process, and instability in the welding process can lead to instability of the ratchet wheel device. In addition, after the electric triggering failure, the overspeed governor continues to overspeed operation, and after a certain speed (equal to the spring force), the mechanical action is triggered, and when the mechanical action is triggered, an included angle exists in the pituitary assembly, so that the electric triggering speed is influenced. Therefore, in view of the above problems, it is necessary to propose further solutions.

Disclosure of Invention

The invention aims to provide a mechanical triggering device which overcomes the defects in the prior art.

In order to solve the technical problems, the technical scheme of the invention is as follows:

A mechanical triggering device, comprising: rope wheel component, pituitary component, stop component and pawl component;

The sheave assembly includes: the rope pulley body and convex teeth arranged at the peripheral edge of one side wall surface of the rope pulley body; the pituitary assembly includes: the pituitary body is arranged on the rope pulley body in a sliding manner along the radial direction and performs centrifugal motion along with the pivoting of the rope pulley body, and the beating rod is arranged on the outer side face of the pituitary body in the axial direction and triggers the stop block assembly along with the centrifugally-moved pituitary body; the stop assembly distributes in the border position of rope sheave body, and it includes: the end face of the other end of the stop block presses the pawl assembly, and the screw is separated from the pawl assembly when triggered by the pituitary body.

As an improvement of the mechanical triggering device, any convex tooth forms an engagement point, a plurality of convex teeth are distributed at equal intervals along the circumferential direction of the rope wheel body, and the angle value of the central angle corresponding to the circular arc between the adjacent convex teeth is at most 20 DEG

As an improvement of the mechanical triggering device, the rope wheel body is provided with a first waist hole which is arranged in a radial extending way, and the pituitary body is arranged in a sliding way along the first waist hole through a bearing on the pituitary body and performs centrifugal movement along with the pivoting of the rope wheel body.

As an improvement of the mechanical triggering device of the invention, the number of the pituitary components is two, and the two pituitary components are distributed on the rope wheel body in a central symmetry way.

As an improvement of the mechanical triggering device, the screw is vertically screwed into the screw hole of the end surface, and the end surface of the other end of the stop block is a concave arc surface matched with the pawl component.

As an improvement to the mechanical triggering device of the present invention, the stop is pivotally disengaged from the pawl assembly when the screw is triggered by the pituitary.

As an improvement of the mechanical triggering device of the present invention, the speed limiter further comprises a bracket comprising: the rope wheel assembly, the pituitary assembly, the stop assembly and the pawl assembly are integrated on the bracket.

Compared with the prior art, the invention has the beneficial effects that: in the mechanical triggering device, the pituitary moves linearly in the speed-limiting operation process; when the pituitary triggers the mechanical screw, an included angle is not formed between the driving rod on the pituitary and the screw on the stop block.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are required to be used in the embodiments or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments described in the present invention, and other drawings may be obtained according to the drawings without inventive effort to those skilled in the art.

Fig. 1 is a schematic perspective view of a mechanical triggering device of the present invention.

Detailed Description

The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

As shown in fig. 1, the invention provides a mechanical triggering device which has the advantages of small volume, light weight and effective speed limiting and braking. The mechanical triggering device comprises: the device comprises a bracket 1, a rope pulley assembly 2, a pituitary assembly 3, a stop assembly 4 and a pawl assembly 5.

The support 1 is used for providing a foundation for the installation and fixation of other components, and the support 1 comprises: a base plate 11 and oppositely disposed side surfaces 12 extending from both side edges of the base plate 11.

The sheave assembly 2 includes: the pulley body 21, set up in the protruding tooth 22 of a side wall peripheral edge of the said pulley body 21.

The sheave body 21 can perform a pivoting motion with its own center axis as a rotation shaft 211, and its circumferential surface has a groove for assisting the wire rope to bypass. Under the action of friction force, the sheave body 21 can exert a pulling force on the wire rope wound therearound. In order to facilitate the movement of the sheave body 21, the center positions of the two side wall surfaces of the sheave body 21 are pivotally connected to the side surfaces 12 on both sides by a rotating shaft 211, and correspondingly, through holes 121 through which the rotating shaft 211 passes are formed in the side surfaces 12 on both sides. Preferably, the through hole 121 is a slot structure that is formed at an upper edge of the side 12 and can be in interference fit with the rotating shaft 211. Meanwhile, a ball bearing for assisting the rotation shaft 211 of the rope pulley body 21 is also arranged between the rotation shaft 211 and the rope pulley body 21.

The teeth 22 are adapted to engage with the pawl assembly 5. Wherein, the number of the teeth 22 is plural, any tooth 22 forms a meshing point, and the plurality of teeth 22 are distributed at equal intervals along the circumference of the sheave body 21. Preferably, the angle value of the central angle corresponding to the arc between adjacent teeth 22 is at most 20 °. This facilitates the sheave body 21 being able to quickly establish a ganged relationship with the pawl assembly 5.

The pituitary assembly 3 is used for triggering the stop assembly 4 to achieve engagement between the pawl assembly 5 and the teeth 22 on the sheave body 21. Specifically, the pituitary assembly 3 is slidably mounted on the sheave body 21, which includes: pituitary 31, the beating rod 32 that sets up on pituitary 31. The rope pulley body 21 is provided with a waist hole extending radially, and the pituitary body 31 is arranged in a sliding way along the waist hole through a bearing on the pituitary body and performs centrifugal movement along with the pivoting of the rope pulley body 21.

The striking rod 32 is disposed on the axial outer side 12 of the pituitary 31. So that the radius of the movement of the pituitary 31 gradually increases along with the centrifugal movement of the pituitary 31, and when the striking rod 32 reaches the position of the stop assembly 4, the striking rod can collide with the stop assembly to trigger.

In one embodiment, the number of the pituitary assemblies 3 is two, and the two pituitary assemblies 3 are distributed on the sheave body 21 in a central symmetry manner. Thus, when performing centrifugal movements, the radial distance of the pituitary 31 in the two pituitary assemblies 3 is gradually increased, which is advantageous for a quick mechanical triggering.

The stop assembly 4 is used for braking the pawl assembly 5, is mounted on the bracket 1 and distributed at the edge position of the sheave body 21, and the stop assembly 4 comprises: stop 41, screw 42 set up on the terminal surface of one end of the stated stop 41. The screw 42 is vertically screwed into the screw hole of the end surface, the stop block 41 is pivotally mounted on the side surface 12 of the bracket 1, and the end surface of the other end of the stop block 41 is a concave arc surface so as to be matched with the pawl assembly 5.

When the stop 41 is in the initial position, the end face of the stop is pressed against the pawl assembly 5, so that the pawl assembly 5 is separated from the convex teeth 22 on the rope pulley body 21, and the pawl assembly and the convex teeth are prevented from being meshed. When the sheave body 21 rotates at a normal rotational speed, the pituitary 31 is located at the initial position. As the sheave body 21 rotates faster and faster, the pituitary 31 performs centrifugal movement along the waist hole by the gradually increasing centrifugal force. When the radius of motion of the pituitary 31 reaches the distance between the screw 42 and the center of the sheave body 21, the striking rod 32 collides with the screw 42, so as to trigger the stop 41 to pivot, and further release the acting force applied to the pawl assembly 5, so that the pawl assembly 5 can engage with the sheave body 21.

In summary, in the mechanical triggering device of the present invention, the pituitary moves linearly in the speed-limiting operation process; when the pituitary triggers the mechanical screw, an included angle is not formed between the driving rod on the pituitary and the screw on the stop block.

It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is provided for clarity only, and that the disclosure is not limited to the embodiments described in detail below, and that the embodiments described in the examples may be combined as appropriate to form other embodiments that will be apparent to those skilled in the art.

Claims

1. A mechanical triggering device, the mechanical triggering device comprising: rope wheel component, pituitary component, stop component and pawl component;

The sheave assembly includes: the rope pulley body and convex teeth arranged at the peripheral edge of one side wall surface of the rope pulley body; the pituitary assembly includes: the pituitary body is arranged on the rope pulley body in a sliding manner along the radial direction and performs centrifugal motion along with the pivoting of the rope pulley body, and the beating rod is arranged on the outer side face of the pituitary body in the axial direction and triggers the stop block assembly along with the centrifugally-moved pituitary body; the stop assembly distributes in the border position of rope sheave body, and it includes: the end face of the other end of the stop block presses the pawl assembly, and the screw is separated from the pawl assembly when triggered by the pituitary body;

the rope pulley body is provided with a first waist hole which is arranged in a radial extending way, and the pituitary body is arranged in a sliding way along the first waist hole through a bearing on the pituitary body and performs centrifugal movement along with the pivoting of the rope pulley body; the screw is vertically screwed into the screw hole of the end surface, and the end surface of the other end of the stop block is a sunken arc surface matched with the pawl component; the stop is pivotally disengaged from the pawl assembly when the screw is triggered by the lobe.

2. The mechanical triggering device according to claim 1, wherein any one of the teeth forms an engagement point, the teeth are equally spaced circumferentially about the sheave body, and the angle of the central angle corresponding to the arc between adjacent teeth is at most 20 °.

3. The mechanical triggering device according to claim 1, wherein the pituitary assembly is two, the two pituitary assemblies being centrally symmetrically distributed on the sheave body.

4. The mechanical triggering device of claim 1 further comprising a bracket comprising: the rope wheel assembly, the pituitary assembly, the stop assembly and the pawl assembly are integrated on the bracket.