CN2556183Y

CN2556183Y - Electric lifting platform

Info

Publication number: CN2556183Y
Application number: CN 02240935
Authority: CN
Inventors: 杨振东
Original assignee: Individual
Current assignee: Individual
Priority date: 2002-07-01
Filing date: 2002-07-01
Publication date: 2003-06-18
Anticipated expiration: 2012-07-01

Abstract

The utility model discloses an electric lifting platform and achieves the effects of being thinner, higher flexibility, more stable positioning and more convenient use, or achieves better practical efficiency. A lifting arm is mainly connected with a crank arm, a gear, a linking shaft, a chain, a motor and a speed gear box provided with two linking arms. The structure can overcomes the defect that a traditional lifting platform use an 'oil hydraulic cylinder' producing large length and occupying large area; the traditional lifting platform can not be lifted to a higher place as the flexible rod of the oil hydraulic cylinder can not be long (the flexible can occupy space with a large length). The utility model uses a structure of plane drive so as to reduce the thickness and volume and to achieve the effects of being upgraded and high specifications. Besides, the utility model uses the mesh of the crank arm, the chain, the gear and the speed gear group to position to make the positioning stable. The utility model overcomes the problem that a traditional oil hydraulic cylinder can fall down with the change of oil pressure, and the electric lifting platform is quite practical and effective.

Description

Platform falls in electronic stretching

Technical field

The utility model relates to a kind of electronic stretching and falls platform, is a kind of improved lifting drive configuration that falls platform of stretching, and the height that it has the thickness thinning, can stretch location higher, when raising is more firm, use practical effect more easily.

Background technology

Platform falls in stretching of traditional type, nothing more than stretching, contract and constitute by the expansion link of " oil hydraulic cylinder ", that is, but the expansion link jacking of oil hydraulic cylinder, decline platen.It has following shortcoming:

(1) is subject to oil hydraulic cylinder and can not be " keeping flat ", need be " going up an oblique angle ", play platen otherwise can't support (liter).Yet this " reserves a top rade degree ", promptly can cause one " height thickness ", so, when its receipts are extremely minimum, be " thicker " highly, and the volume that takes up space on foot.

(2) it stretches high height, pure length by the oil hydraulic cylinder expansion link, so, can not stretch high height, as desire to stretch high height, then essential adopt " speciality shape oil hydraulic cylinder ", to derive and increase volume, increase cost (the special requirement oil hydraulic cylinder needs tailor-made, extremely expensive).

(3) especially, the position stability when it raises is relatively poor, and this is because it keeps the height state of jacking purely by oil pressure, and oil pressure has the problem of reduction when long-time; Perhaps, oil circuit keeps long-time height, has the problem of easily breaking, and in addition, during the oil pressure pump fault, also has the problem that oil pressure is eliminated.So keep height with oil pressure, have the hidden danger of instability, mistake fault.

The utility model content

Therefore, the utility model improves at above-mentioned problem, and can overcome above-mentioned problem fully, and its major programme is:

Platform falls in a kind of electronic stretching, by a base, two groups of seemingly scissors shapes of being made up of two lamellar bodies are stretched and are fallen arm, one bay-lift is formed, base, the interior bilateral of bay-lift is provided with track, one end is provided with connection shaft, stretch for two groups and fall arm one end and be provided with axis hole, and on, the lower end respectively with base, the connection shaft combination of bay-lift articulates one, but be initial point and rotate angle changing, in addition, stretch the other end outside that falls arm for two groups, be equipped with pulley and embed base respectively, the track of bay-lift, can fall the arm angle changing but form to stretch along the slide displacement, and then produce the effect that makes the bay-lift rise and fall;

It is characterized in that: stretch the lower end that falls the arm pulley end for these two groups, being provided with drive spindle makes two to stretch and fall arm and link one, and, but drive spindle is provided with the coupled arm of pivot joint angle changing, in addition, be provided with motor, the speed-change gear box of one interlock in this base other end, and be provided with one protruding, protruding seat is provided with couple axle, couple axle is provided with gear and another coupled arm, and the external gear that sets a chain and speed-change gear box links one, moreover, the coupled arm of protruding seat couple axle and the coupled arm of drive spindle articulate one, but two coupled arms form the structure of cranking arm of an angle changing.

Adopt the major advantage of such scheme to be:

One, driving is stretched power, the structure of falling arm, be set as by motor, speed-change gear box, gear, crank arm and drive and stretch the drive spindle that falls arm and produce the ascending, descending effect, pass through said mechanism, can be " plane formula " and drive lifting, and can reduce to receive thickness volume at ordinary times, and, as long as base, platen, to stretch the length of falling arm big, can rise to high height.

Its two, by speed-change gear box, gear, the engagement location of cranking arm, can obtain extremely firm locating effect, do not imposing the situation of electric power, problem that can wrong decline, safety is splendid.

Below in conjunction with drawings and Examples, the utility model and advantage thereof are further described.

Description of drawings

Fig. 1 is three-dimensional decomposition of the utility model and part sectional view;

Fig. 2 looks (B) front elevation for the utility model makes up to analyse and observe on the collapse state (A);

Fig. 3 looks (B) front elevation on the utility model propradation (A);

Fig. 4 is the enforcement illustration of rotating disk interlock for the utility model.

The specific embodiment

See also Fig. 1, Fig. 2, Fig. 3, the utility model is by a base 10, two groups of seemingly scissors shapes of being made up of two lamellar bodies are stretched and are fallen

arm

20,21 and one bay-lift 30 is formed, base 10, the interior bilateral of bay-lift is provided with track 11,31, one end is provided with

connection shaft

220,32, stretch for two groups and

fall arm

20,21 1 ends are provided with axis hole 22, and present, the lower end respectively with base 10, the connection shaft 220 of bay-

lift

30,32 combinations articulate one, but be initial point and rotate angle changing, in addition, stretch for two groups and fall

arm

20,21 the other end outside, be equipped with

pulley

23,26 also embed base 10 respectively, the track 11 of bay-lift 30,31, can form to stretch and fall arm 20 along the slide displacement, but 21 angle changings, and then generation makes the effect of bay-lift 30 rise and fall; Be primarily characterized in that: stretch for these two groups and

fall arm

20,21

pulley end

23,26 lower end, being provided with drive spindle 25 makes two to stretch and fall

arm

20,21 link one, and, but drive spindle 25 is provided with the coupled arm 24 of pivot joint angle changing, in addition, be provided with the motor M of one interlock in these base 10 other ends, speed-change gear box 16, and be provided with one protruding 12, protruding seat 12 is provided with couple axle 13, couple axle 13 is provided with gear 15 and another coupled arm 14, the external gear 18 that sets a chain 17 and speed-change gear box 16 links one, in addition, the coupled arm 14 of protruding seat couple axle 13 articulates one with the coupled arm of drive spindle 25 24, two coupled arms 14, but 24 form the structure of cranking arm of an angle changing, as motor M, when speed-change gear box 16 rotates, can make two coupled

arms

14,24 produce complications reels, stretch the effect of pushing tow drive spindle 25 displacements, and then make two groups to stretch and fall

arm

20,21 generation angles change and rise, decline bay-lift 30.

Utilize above-mentioned structure, effect of the present utility model, effect, advantage, specification specified is as follows more now:

Effect of the present utility model, action, as shown in Figure 2, be the state that bay-lift 30 collapses in base 10 when initial, be this moment " two coupled

arms

14,24 stretch and are a straight line ", its drive spindle 25 is stepped back to extreme end, and make two groups to stretch the upper end that falls

arm

20,21 and be the state that drops to nadir, promptly fold bay-lift 30.As shown in Figure 3, when desire rising bay-lift 30, motor M rotates, via the rotation of speed-change gear box 16,

gear

18,15, chain 17, couple axle 13, and make its inner coupled arm transposition, form the effect of angle changing pulling, another coupled arm 24 of outer end that furthers, can draw and make drive spindle 25 displacements near (toward motor direction), can be so that the change action that upwards raises of angle of

arm

20,21 fall in two groups of scissors-like stretching, and the bay-lift 30 that can raise, promptly stop motor M to desired height.Otherwise during desire decline bay-lift 30, motor M backward rotation can be stretched two coupled

arms

14,24 once more, and can be retreated drive spindle 25, decline bay-lift 30 more again.

By above-mentioned explanation as can be known, operation of the present utility model, action and use, extremely simple and easy, Convenient. And, also have following effect, advantage:

(1) make

stretch fall arm

20,21 stretch the

gear

15,18 of height, decline start, coupled

arm

14, 24, be the action of " plane formula ", therefore, can simplified construction, the required height sky of action Between, and " thickness volume " after must reducing lifting platform 30 and folding makes it thinning and more do not take up space.

(2) drive ascending, descending because being " plane formula ", so, need only growth base 10, stretch and fall

Arm

20,21 length can increase the rising height of lifting platform 30, " can rise and must make High " specification, do not have the problem that is subject to the oil hydraulic cylinder length of telescopic bar as traditional type.

(3) when raising, want to keep for a long time height, only need stop motor M, can utilize speed change Gear train engagement location in the gear-box 16, and must keep the location, and also this location is by " tooth Wheel " the mechanical type location, in the situation of not bestowing powered rotation change gear box 16, will not Misroute moving causing and activate two coupled

arms

14,24, so, can get splendid locating effect, can not Mistake descends, and can get splendid security again.

In addition, according to above-mentioned technological means, the utility model also can implement to be the structural type of Fig. 4 Attitude that is: is connected with a rotating disk 130 with projection seat 12 couple axles 13, and rotating disk 130 articulates coupled arm 24, when rotating disk 130 rotates with couple axle 13, can form eccentric pulling, promote coupled arm 24 Effect, also can spur, promote drive rod 25 displacements, and then obtain to make to stretch to fall

arm

20,21 The effect of lifting belongs in the equivalent structure intention category of the present utility model.

In sum, architectural feature of the present utility model is in " lifting platform " field of articles, really Have in fact splendid practicality and promote effect.

Claims

1. platform falls in electronic stretching, by a base, two groups of seemingly scissors shapes of being made up of two lamellar bodies are stretched and are fallen arm, one bay-lift is formed, base, the interior bilateral of bay-lift is provided with track, one end is provided with connection shaft, stretch for two groups and fall arm one end and be provided with axis hole, and on, the lower end respectively with base, the connection shaft combination of bay-lift articulates one, but be initial point and rotate angle changing, in addition, stretch the other end outside that falls arm for two groups, be equipped with pulley and embed base respectively, the track of bay-lift, can fall the arm angle changing but form to stretch along the slide displacement, and then produce the effect that makes the bay-lift rise and fall;

2. platform falls in electronic stretching as claimed in claim 1, it is characterized in that: this protruding seat couple axle can be organized and establish a rotating disk, and the coupled arm of drive spindle can directly link and is articulated in rotating disk.