CN205315560U

CN205315560U - Face upward arm overspeed governor

Info

Publication number: CN205315560U
Application number: CN201620050949.7U
Authority: CN
Inventors: 胡俊; 王如冈
Original assignee: Pinghu Tuoweisi Automatic Equipment Co Ltd
Current assignee: Pinghu Tuoweisi Automatic Equipment Co Ltd
Priority date: 2016-01-19
Filing date: 2016-01-19
Publication date: 2016-06-15
Anticipated expiration: 2026-01-19

Abstract

The utility model discloses a face upward arm overspeed governor, the locking axle sets up in the installation frame, the epaxial drive gear that is equipped with locks, lock the epaxial brake disc that is equipped with, the braking ball, braking inner shell and braking shell, it holds the chamber to form between braking inner shell and the braking shell, the intracavity is being held in the brake disc setting, braking inner shell and brake disc and the synchronous rotation of locking axle, the braking shell is static for the braking inner shell, be equipped with a plurality of recesses on the circumference wall of brake disc, the braking ball is placed in the recess, open on the upper portion of braking shell has the breaker slot, the breaker slot is less than the diameter of brakeing the ball apart from brake disc external circumferential wall's distance. The utility model has the advantages that: the centrifugal force when exceeding the speed limit is utilized, the recess entering breaker slot that the ball threw away the brake disc will be brakied to make braking ball card between breaker slot and brake disc, reach the purpose of speed limit, simple structure, the dependable performance plays good speed limit effect, and this device still need not reformed transform flexible arm machine simultaneously, is convenient for popularize.

Description

Face upward arm speed limiter

Technical field

The utility model relates to a kind of speed limiting device, specifically, it relates to face upward arm speed limiter.

Background technology

At present, the structure formation wiping window machine is more and more diversified, obtains the application got more and more in high-rise building. Wipe window machine as a high risk industries, still it has not been put in special equipment and goes, and its national standard is since promulgation in 2003, never upgrades. In the national standard of 2003 editions, the requirement wiping window machine is limited, and a lot of requirement is not listed, and causes abundant not to the consideration of the safety precaution aspect of product of all enterprises. Such as wiping in window machine standard, it is desired to lifting mechanism must arrange standby braking, i.e. second protection, but does not have this requirement for the telescopic boom facing upward arm formula, therefore, the telescopic boom in existing market does not design the device of hypervelocity protection.

Practical novel content

The purpose of this utility model is that arm speed limiter is faced upward in offer, it is possible to effectively solving existing telescopic boom wiping window machine does not have the problem of stall protection for facing upward arm formula telescopic boom.

In order to solve the problems of the technologies described above, the utility model is achieved through the following technical solutions: face upward arm speed limiter, comprise installation support, lock shaft, described lock shaft is arranged on to be installed in support, described lock shaft is provided with the first transmitting gear, described first transmitting gear engages with the driving rack of telescopic boom, described lock shaft is also provided with stall protection device, described stall protection device comprises retarding disc, braking ball, braking inner casing and braking shell, container cavity is formed between described braking inner casing and braking shell, described retarding disc is arranged in container cavity, described braking inner casing and retarding disc and lock shaft synchronous axial system, described braking shell is static relative to braking inner casing, the circumferential wall of retarding disc is provided with some grooves, described braking ball is placed in groove, the top of described braking shell has the breaker slot communicated with container cavity, the distance of described breaker slot distance retarding disc outer circle wall is less than the diameter of braking ball.

Preferably, described braking inner casing comprises left inside shell and right inside shell, and described left inside shell comprises the housing of annular, and described housing is provided with the convex edge extended radially outward, and is provided with friction plate between described convex edge and retarding disc, and described right inside shell is consistent with left inside shell structure;Playing shock absorption by friction plate, namely this speed limiter can only provide a certain maximum braking moment, and exceeding part will skid.

Preferably, described lock shaft is provided with at least one shaft shoulder, and described braking inner casing end face withstands on the shaft shoulder, and the other end of described braking inner casing contacts with disc spring, and described disc spring is set on lock shaft; The frictional force between friction plate and retarding disc is controlled by disc spring.

Preferably, described lock shaft is also provided with and regulates the set nut of disc spring with braking inner casing pressure, be also provided with between described set nut and disc spring and compress pad; The pressure of disc spring is regulated by set nut.

Preferably, described installation support comprises permanent seat and is positioned at the sliding seat above permanent seat, described lock shaft is fixed in permanent seat, described sliding seat side and permanent seat are rotationally connected, another side of sliding seat is provided with distance adjusting means, being provided with the 2nd transmitting gear in described sliding seat, described first transmitting gear is engaged with the driving rack of telescopic boom by the 2nd transmitting gear; Controlled the angle of sliding seat and permanent seat by distance adjusting means, thus make the telescopic boom of the 2nd adaptive multiple different model of transmitting gear energy.

Preferably, described distance adjusting means comprises adjustment pull bar, regulating spring and setting nut, described permanent seat is provided with through hole, described adjustment pull bar upper end is fixed in sliding seat, regulating the lower end of pull bar through through hole, setting nut is screwed in the lower end regulating pull bar, and regulating spring is set in and regulates on pull bar, permanent seat is withstood in the upper end of regulating spring, and the lower end of regulating spring withstands on setting nut; By setting nut and regulating spring, the angle of control sliding seat and permanent seat, is convenient to regulate and fix.

Compared with prior art, the utility model has the advantages that: utilize centrifugal force during hypervelocity, the groove that braking ball throws away retarding disc is entered breaker slot, thus make braking ball be stuck between breaker slot and retarding disc, and reaching the object of speed limit, this apparatus structure is simple, dependable performance, telescopic boom machine plays good speed limit effect, and this device does not also need to be transformed by telescopic boom machine simultaneously, is convenient to popularize.

Accompanying drawing explanation

Fig. 1 is the sectional view that the utility model faces upward arm speed limiter front view;

Fig. 2 is the right view of Fig. 1;

Fig. 3 is that the utility model faces upward the sectional view braking inner casing and braking housing combination in arm speed limiter;

Fig. 4 is that the utility model faces upward the structural representation braking circle in arm speed limiter.

Embodiment

Consult Fig. 1, Fig. 2, Fig. 3 is the embodiment that the utility model faces upward arm speed limiter, face upward arm speed limiter, comprise and support 1 is installed, lock shaft 2, described lock shaft 2 is arranged on to be installed in support 1, described lock shaft 2 is provided with the first transmitting gear 3, described first transmitting gear 3 engages with the driving rack of telescopic boom, described lock shaft 2 is also provided with stall protection device, described stall protection device comprises retarding disc 4, braking ball 7, braking inner casing 5 and braking shell 6, container cavity 8 is formed between described braking inner casing 5 and braking shell 6, described retarding disc 4 is arranged in container cavity 8, described braking inner casing 5 and retarding disc 4 and lock shaft 2 synchronous axial system, described braking shell 6 is static relative to braking inner casing 5, the circumferential wall of retarding disc 4 is provided with some grooves 9, described braking ball 7 is placed in groove 9, the top of described braking shell 6 has the breaker slot 10 communicated with container cavity 8, described breaker slot 10 is less than, apart from the distance of retarding disc 4 outer circle wall, the diameter braking ball 7

Described braking inner casing 5 comprises left inside shell 11 and right inside shell 12, described left inside shell 11 comprises the housing 13 of annular, described housing 13 is provided with the convex edge 14 extended radially outward, it is provided with friction plate 15 between described convex edge 14 and retarding disc 4, described right inside shell 12 is consistent with left inside shell 11 structure, described lock shaft 2 is provided with at least one shaft shoulder, described braking inner casing 5 end face withstands on the shaft shoulder, the other end of described braking inner casing 5 contacts with disc spring 16, described disc spring 16 is set on lock shaft 2, described lock shaft 2 is also provided with and regulates the set nut 17 of disc spring 16 with braking inner casing 5 pressure, also it is provided with between described set nut 17 and disc spring 16 and compresses pad 18.

Described installation support 1 comprises permanent seat 22 and is positioned at the sliding seat 23 above permanent seat 22, described lock shaft 2 is fixed in permanent seat 22, described sliding seat side and permanent seat 22 are rotationally connected, another side of sliding seat is provided with distance adjusting means, described distance adjusting means comprises adjustment pull bar 25, regulating spring 26 and setting nut 27, described permanent seat 22 is provided with through hole, described adjustment pull bar 25 upper end is fixed in sliding seat 23, regulate the lower end of pull bar 25 through through hole, setting nut 27 is screwed in the lower end regulating pull bar 25, regulating spring 26 is set in and regulates on pull bar 25, permanent seat 22 is withstood in the upper end of regulating spring 26, the lower end of regulating spring 26 withstands on setting nut 27, the 2nd transmitting gear 24 it is provided with in described sliding seat 23, described first transmitting gear 3 is engaged with the driving rack of telescopic boom by the 2nd transmitting gear 24.

Braking shell 6 can be fixedly connected with other parts wiping window machine, gap is left between left inside shell 11 and right inside shell 12, so as the frictional force better between adjustable brake dish 4 and friction plate 15, and convex edge 14 can be positioned at the position in the middle part of left inside shell 11, leave enough positions between the convex edge 14 of left inside like this shell 11 and the convex edge 14 of right inside shell 12 and place retarding disc 4, and rolling bearing can be socketed on the left of the convex edge 14 of left inside shell 11 and on the right side of the convex edge 14 of right inside shell 12, described braking shell 6 comprises left outside shell 19, right casing 20 and braking circle 21, described braking circle 21 is arranged between left outside shell 19 and right casing 20, as shown in Figure 4, described breaker slot 10 is opened on braking circle 21 inwalls, left outside shell 19 is connected with left inside shell 11 by rolling bearing, right casing 20 is connected with right inside shell 12 by rolling bearing, braking circle 21 is clipped between left outside shell 19 and right casing 20. the elastic force of disc spring 16 is regulated by set nut 17, thus control the frictional force between friction plate 15 and retarding disc 4, regulating and controlling nut 27, regulate the angle between sliding seat 23 and permanent seat 22,2nd transmitting gear 24 can be engaged preferably, thus the speed making driving rack can accurately be delivered on lock shaft 2 with the driving rack of telescopic boom. when telescopic boom hypervelocity glides, drive the overspeed rotation of the 2nd transmitting gear 24, 2nd transmission tooth engages with the first transmitting gear 3 tooth on lock shaft 2 end, thus drive the overspeed rotation of lock shaft 2, retarding disc 4 and lock shaft 2 synchronous axial system, thus drive retarding disc 4 high-speed rotation, during retarding disc 4 high-speed rotation, owing to retarding disc 4 synchronous axial system followed by braking ball 7, when speed reaches a timing, braking ball 7 is due to centrifugal action, depart from groove 9 and enter breaker slot 10, thus make braking ball 7 be stuck between breaker slot 10 and retarding disc 4 and enter braking locking position, thus reach the effect of braking and locking axle 2. in order to avoid complete rigidity to lock dead lock shaft 2, prevent shock factor excessive, causing the fault of mechanical means, lock shaft 2 is not complete locking state, and it has a maximum locking torque, but when surging force exceedes maximum locking torque, owing to the connection between retarding disc 4 and braking inner casing 5 is connected by wearing piece, there is relatively sliding between its retarding disc 4 and braking inner casing 5, thus play shock absorption, namely this speed limiter can only provide a certain maximum braking moment, and exceeding part will skid. therefore, this speed limiter not stopper simultaneously, it can not brake large arm completely, but restriction large arm hypervelocity glides, and the large arm that hypervelocity is glided is decelerated to safe slip velocity. meanwhile, if during normal operation, the situation that large arm stretching speed is constant, braking ball 7 remains in the breaker slot 10 of retarding disc 4 and roll, and can not put by trigger lock stop bit, thus realizes the object that this mechanism of normal operation does not work.This device can meet the different elevation angle; the speed limit effect of different joint number arm; namely can with facing upward on arm; can also be used on horizontal-arm; as long as when meeting total restraining moment; it is applicable in different structures; fundamentally solve the second protection of Purely mechanical; the possibility preventing large arm hypervelocity from gliding, solve in current engineering can not problem, the security of flexible arm type machine is improved a lot; rational in infrastructure, security height; original design basis sets up mechanism, highly versatile, meet actual engineering demand.

The foregoing is only specific embodiment of the utility model, but technology feature of the present utility model is not limited thereto, the technician of any this area is in field of the present utility model, and change or the modification done all are encompassed among patent scope of the present utility model.

Claims

1. face upward arm speed limiter, it is characterized in that: comprise and support (1) is installed, lock shaft (2), described lock shaft (2) is arranged on to be installed in support (1), described lock shaft (2) is provided with the first transmitting gear (3), described first transmitting gear (3) is engaged with the driving rack of telescopic boom, described lock shaft is also provided with stall protection device on (2), described stall protection device comprises retarding disc (4), braking ball (7), braking inner casing (5) and braking shell (6), container cavity (8) is formed between described braking inner casing (5) and braking shell (6), described retarding disc (4) is arranged in container cavity (8), described braking inner casing (5) and retarding disc (4) and lock shaft (2) synchronous axial system, described braking shell (6) is static relative to braking inner casing (5), the circumferential wall of retarding disc (4) is provided with some grooves (9), described braking ball (7) is placed in groove (9), the top of described braking shell (6) has the breaker slot (10) communicated with container cavity (8), the distance of described breaker slot (10) distance retarding disc (4) outer circle wall is less than the diameter of braking ball (7).

2. face upward arm speed limiter as claimed in claim 1, it is characterized in that: described braking inner casing (5) comprises left inside shell (11) and right inside shell (12), described left inside shell (11) comprises the housing (13) of annular, described housing (13) is provided with the convex edge (14) extended radially outward, being provided with friction plate (15) between described convex edge (14) and retarding disc (4), described right inside shell (12) is consistent with left inside shell (11) structure.

3. face upward arm speed limiter as claimed in claim 2, it is characterized in that: described lock shaft (2) is provided with at least one shaft shoulder, described braking inner casing (5) end face withstands on the shaft shoulder, the other end of described braking inner casing (5) contacts with disc spring (16), and described disc spring (16) is set on lock shaft (2).

4. face upward arm speed limiter as claimed in claim 3, it is characterized in that: described lock shaft (2) is also provided with and regulates the set nut (17) of disc spring (16) with braking inner casing (5) pressure, also it is provided with between described set nut (17) and disc spring (16) and compresses pad (18).

5. face upward arm speed limiter as claimed in claim 1, it is characterized in that: described braking shell (6) comprises left outside shell (19), right casing (20) and braking circle (21), described braking circle (21) is arranged between left outside shell (19) and right casing (20), and described breaker slot (10) is opened on braking circle (21) inwall.

6. face upward arm speed limiter as claimed in claim 1, it is characterized in that: described installation support (1) comprises permanent seat (22) and is positioned at the sliding seat (23) of permanent seat (22) top, described lock shaft (2) is fixed in permanent seat (22), described sliding seat side and permanent seat (22) are rotationally connected, another side of sliding seat is provided with distance adjusting means, the 2nd transmitting gear (24) it is provided with in described sliding seat (23), described first transmitting gear (3) is engaged with the driving rack of telescopic boom by the 2nd transmitting gear (24).

7. face upward arm speed limiter as claimed in claim 6, it is characterized in that: described distance adjusting means comprises adjustment pull bar (25), regulating spring (26) and setting nut (27), described permanent seat (22) is provided with through hole, described adjustment pull bar (25) upper end is fixed in sliding seat (23), regulate the lower end of pull bar (25) through through hole, setting nut (27) is screwed in the lower end regulating pull bar (25), regulating spring (26) is set in and regulates on pull bar (25), permanent seat (22) is withstood in the upper end of regulating spring (26), the lower end of regulating spring (26) withstands on setting nut (27).