CN103009358A

CN103009358A - Liftable working table

Info

Publication number: CN103009358A
Application number: CN2012105033939A
Authority: CN
Inventors: 谢翠斌
Original assignee: Individual
Current assignee: Individual
Priority date: 2012-12-01
Filing date: 2012-12-01
Publication date: 2013-04-03

Abstract

The invention relates to a liftable working table which comprises a tool plate, an underframe, a lifting pipe and an upright post, wherein the lower end surface of the tool plate is connected with the lifting pipe sleeved in the upright post; the upright post is perpendicularly connected with the underframe; universal wheels are arranged at the lower end of the underframe; a rack is arranged on the side wall of the lifting pipe; a lifting device is arranged on the upright post and is provided with a gear and a pawl therein; the gear and the pawl are mutually meshed; a rotary handle is arranged on the gear; a retaining operating rod is arranged at the tail end of the pawl; and the head of the pawl is clamped into the mouth of the rack. According to the invention, the gear of the lifting device is meshed with the rack of the lifting pipe so as to lift the tool plate, and besides, the lower end of the tool plate is connected with a hinged support so as to realize movable folding of the tooling plate. The liftable working table has the advantages of compact integral structure, convenience in lifting and folding, high safety performance, low failure rate, long service life and convenience in storage and transportation.

Description

Self-powered platform

Technical field

The present invention relates to a kind of self-powered platform, is a kind of self-powered platform of collapsible, hand-operated lifting specifically.

Background technology

In flight-line maintenance, when particularly servicing a car, the height of table of place tool needs to regulate at any time to satisfy maintenance requirements, and the workbench of traditional lifting can only transfer to suitable height by manual with workbench in the situation of zero load, use comparatively inconvenience.Existing self-powered platform is divided into hand-operated lifting and automatic lifting, the applicant is the disclosed self-powered platform of CN200820237923.9 in the patent No. of first to file, cooperate the fastening nut of fall way to make scratch diskette with the fall way lifting by the column upper groove, lock simultaneously fastening nut control scratch diskette level altitude, its weak point is: this tool shelf must manually raise with the down tools dish after locking fastening nut, descending operation is loaded down with trivial details, wastes time and energy; Also having the patent No. is the disclosed Pneumatic type lifting working bench of CN200920045506.9, and the lifting of tool shelf is to be realized by air pump take off and landing strip power driven tools dish, breaks down such as air pump, workbench can't lifting, use and security performance are low, change, keep in repair trouble, and cost is high.

Summary of the invention

In order to solve the deficiencies in the prior art, the purpose of this invention is to provide that a kind of compact conformation, lifting are convenient, security performance is high, the self-powered platform of failure rate is low, long service life.

The technical solution used in the present invention is: a kind of self-powered platform, comprise tool shelf, underframe, fall way, column, the tool shelf lower surface connects fall way, fall way is placed in the column, column is vertically connected on the underframe, the underframe lower end is provided with universal wheel, it is characterized in that: described fall way sidewall is provided with tooth bar, described column is provided with lowering or hoisting gear, be provided with gear and ratchet in the lowering or hoisting gear, the wheel and rack engagement, gear is provided with rotating handles, the afterbody of described ratchet is provided with the retaining control stick, and the pawl head of ratchet is stuck on the tooth mouth of tooth bar.When tool shelf must rise, shake rotating handles, the gear drive tooth bar makes fall way drive the tool shelf rising, continue in the uphill process at tooth bar, the rack tooth mouth will be stuck in the interior ratchet pawl head of tooth mouth to pop-up from the tooth mouth, and tooth bar is not affected by ratchet pawl head, and fall way can normally rise; When tool shelf must descend, the retaining control stick of leaving behind unclamps ratchet made ratchet pawl head break away from the tooth mouth of tooth bar, oppositely shakes rotating handles, the gear drive tooth bar makes fall way drive tool shelf decline, in tooth bar continuous decrease process, ratchet pawl head descends without impact on tooth bar, and fall way can normally descend; The tool shelf descending operation is simple, convenient, need not manually lift or press tool shelf, and is time saving and energy saving; By rotating handles operation gear driven gear rack elevating, compact conformation, the mechanical elevating reliable in structure, failure rate is low, easy to maintenance, long service life.

Further, also be provided with the spring of pressing ratchet pawl head in the described lowering or hoisting gear.When tool shelf rises, fall way rack tooth mouth will be stuck in ratchet pawl head in the tooth mouth to pop-up from the tooth mouth, ratchet pawl head under the effect of spring reset of card to next tooth mouth, rack tooth salty multiple with ratchet pawl head to pop-up from the tooth mouth, fall way can normally rise; After the tool shelf rising stopped, ratchet pawl head is static being stuck in the tooth mouth under the effect of spring, avoids tooth bar to glide and make tool shelf decline cause contingency, improved the workbench usage safety performance.

Again further, described tool shelf lower end is fixedly connected with free bearing, free bearing is provided with the arc orbit groove, described fall way top is provided with lock-screw, the bolt part of lock-screw is placed in the arc orbit groove of free bearing and can slides in the arc orbit groove, the nut of lock-screw partly compresses free bearing and fall way, and the fall way upper articulation is on the pin joint of free bearing, and fall way can rotate around pin joint along arc orbit groove direction; Described arc orbit groove is 1/4 circle take pin joint as the center of circle.The arc orbit groove of tool shelf lower end free bearing is rotated around pin joint, lock upper lock-screw after turning to the required angle of tool shelf, make the whole table top of tool shelf fixing at an angle towards the user, when placing some less parts, user's use of can differentiating clear, intuitively and take, when avoiding the conventional tool card to be horizontally disposed with, the user can't find the drawback of required part at a glance, has improved operating efficiency; The arc orbit groove of tool shelf lower end free bearing is after pin joint rotates 1/4 circle, and it is little to take up room after the folding gathering of tool shelf, is convenient to deposit, transport.

The present invention adopts lowering or hoisting gear gear engagement fall way gear rack elevating tool shelf, and engagement tool dish lower end is connected to the movable Foldable tool dish of free bearing, compact overall structure, lifting, folding convenient, security performance is high, failure rate is low, long service life stores convenient transportation.

Description of drawings

Fig. 1 is structural representation of the present invention.

Among the figure: tool shelf 1, fall way 2, tooth bar 21, column 3, underframe 4, universal wheel 5, lowering or hoisting gear 6, gear 7, rotating handles 8, ratchet 9, spring 10, retaining control stick 11, free bearing 12, arc orbit groove 13, pin joint 14, lock-screw 15.

The specific embodiment

The invention will be further described below in conjunction with drawings and Examples.

Shown in Figure 1, self-powered platform mainly comprises tool shelf 1, fall way 2, column 3, underframe 4, free bearing 12 and lowering or hoisting gear 6.Tool shelf 1 lower end is fixedly connected with free bearing 12, fall way 2 upper articulations are on the pin joint 14 of free bearing 12, free bearing 12 is provided with arc orbit groove 13, fall way 2 is provided with lock-screw 15, the bolt part of lock-screw 15 is placed in the arc orbit groove 13 of free bearing 12 and can be in the 13 interior slip of arc orbit groove, the nut of lock-screw 15 partly compresses free bearing 12 and fall way 2, fall way 2 can rotate around pin joint 14 along arc orbit groove 12 directions, fall way 2 is placed in the column 3, column 3 is vertically connected on the underframe 4, and underframe 4 lower ends are provided with universal wheel 5; Fall way 2 sidewalls are provided with tooth bar 21, column 3 is provided with lowering or hoisting gear 6, lowering or hoisting gear 6 comprises gear 7, rotating handles 8, ratchet 9, spring 10 and retaining control stick 11, gear 7 and tooth bar 21 engagements, gear 7 is provided with rotating handles 8, and the afterbody of ratchet 9 is provided with retaining control stick 11, and the pawl head of ratchet 9 is stuck on the tooth mouth of tooth bar 21, spring 10 1 ends are fixed in the lowering or hoisting gear 6, and the spring other end is pressed on the ratchet 9 pawl heads.

Claims

1. a self-powered platform comprises tool shelf, underframe, fall way, column, and the tool shelf lower surface connects fall way, fall way is placed in the column, column is vertically connected on the underframe, and the underframe lower end is provided with universal wheel, it is characterized in that: described fall way sidewall is provided with tooth bar, described column is provided with lowering or hoisting gear, be provided with gear and ratchet in the lowering or hoisting gear, the wheel and rack engagement, gear is provided with rotating handles, the afterbody of ratchet is provided with the retaining control stick, and the pawl head of ratchet snaps in the tooth mouth of tooth bar.

2. self-powered platform according to claim 1 is characterized in that: the spring that also is provided with pressing ratchet pawl head in the described lowering or hoisting gear.

3. self-powered platform according to claim 1, it is characterized in that: described tool shelf lower end is fixedly connected with free bearing, free bearing is provided with the arc orbit groove, described fall way top is provided with lock-screw, the bolt part of lock-screw is placed in and is along arc orbit groove sliding mode in the arc orbit groove of free bearing, the nut of lock-screw partly compresses free bearing and fall way, and the fall way upper articulation is along arc orbit groove direction around the pin joint rotary state at the pin joint of free bearing.

4. self-powered platform according to claim 3 is characterized in that: described arc orbit groove is 1/4 circle take pin joint as the center of circle.