CN2371088Y

CN2371088Y - Hydraulic lifting hand cart

Info

Publication number: CN2371088Y
Application number: CN 99220714
Authority: CN
Inventors: 王志刚; 杜愎刚
Original assignee: VEHICLE ADMINISTRATION COLLEGE PLA
Current assignee: VEHICLE ADMINISTRATION COLLEGE PLA
Priority date: 1999-04-30
Filing date: 1999-04-30
Publication date: 2000-03-29
Anticipated expiration: 2009-04-30

Abstract

The utility model relates to a hydraulic lifting handcart. In the utility model, an upper fixed end and a lower fixed end of a lifting rack composed of two groups of connected four-bar linkage mechanisms are respectively hinged with the front ends of a rectangle upper frame and a rectangle lower frame; the upper gliding end and the lower gliding end of the lifting rack are arranged in gliding grooves on both sides of the upper and lower frames; a hydraulic cylinder 16 is fixed on the back end of the lower frame; the front end of a pushing rod 10 of the hydraulic cylinder is connected with a pushing and pulling rod 8 with both ends being arranged in the gliding grooves of the lower frame; the push-pull rod 8 is connected with the lower gliding end of the lifting rack by two connecting rods 11. Compared with existing handcarts, the utility model can satisfy requirements of lifting work of heavier components of products in the process of changing.

Description

The hydraulic lifting hand barrow

The utility model provides a kind of hydraulic lifting hand barrow.

The structure of existing hand barrow is: a horizontally disposed rectangular frame is arranged, and its rear end is provided with handlebar, and four jiaos of the bottom are provided with road wheel, and bearing plate is fixed on the framework.Because of it can not make the lifting device that is moved up and down by the loading product, this car does not possess carried out the function of lifting operation by the loading product, only can be used for transportation by the loading product, functions of use is single, because of this, obviously can't satisfy product (as HD truck and special-use vehicle, heavy duty machine tools etc.) the heavier parts in are (as automotive battery and change-speed box, transmission shaft etc.) the lifting job requirements in the replacing process, this brings inconvenience to maintenance, maintainer's labour intensity is big first, second very dangerous in the maintenance process to personnel and equipment, be prone to accident on duty.

The purpose of this utility model is to provide a kind of hydraulic lifting hand barrow, compares with existing hand barrow, can satisfy the lifting job requirements in the heavier part replacement process in the product.

The purpose of this utility model is achieved through the following technical solutions:

The hydraulic lifting hand barrow that the utility model provides, four jiaos of rectangle underframe bottom are provided with road wheel, its constructional feature is: the fixed end up and down of the crane that two cover four-bar linkages compose in parallel is hinged with the front end of rectangle upper frame and underframe respectively, the slide down moved end of crane places respectively in the chute of framework both sides up and down, hydraulic actuating cylinder 16 is fixed on the rear end of underframe, hydraulic actuating cylinder push rod 10 front ends place the interior pull bar 8 of underframe chute to be connected with two ends, and pull bar 8 is connected with the downslide moved end of crane by two connecting rods 11.

By above technical scheme as seen, when 10 reaches of hydraulic actuating cylinder push rod eject, pull bar 8, two connecting rods 11 move forward synchronously, the downslide moved end that promotes crane along the chute of underframe both sides to front slide, and then the last sliding end that drives crane again along the chute of upper frame both sides to front slide, like this, the upwards lift height of crane increases, and rises the parts on the upper frame; Otherwise parts move in the indentation hydraulic actuating cylinder 16 after can making hydraulic actuating cylinder push rod 10 on crane and the upper frame, and promptly crane progressively shrinks downwards, and the quilt on the upper frame carries parts and falls.In sum, the utility model is because of being provided with the crane that hydraulic efficiency gear drives, compare with existing hand barrow, can satisfy the lifting job requirements of heavier parts in the maintain and replace process in the product, the maintainer is when utilizing its maintenance of being engaged in product, both safe ready was quite laborsaving again.

Description of drawings:

Fig. 1 is the birds-eye view of the utility model most preferred embodiment;

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

Fig. 3 is the A-A cutaway view of Fig. 1;

Fig. 4 is the B-B cutaway view of Fig. 1.

Be described further below in conjunction with the utility model most preferred embodiment and accompanying drawing thereof:

Referring to Fig. 1, the rectangle upper frame is surrounded with the relative form of groove with two transverse channel steels 1 by two vertical channel-section steels 2 and forms, two vertical channel-section steels 2 fastenings in rectangular-shaped top plate 22 two flangings by its Width two parallel sides places and the upper frame, two handles 21 are located on two flangings of rectangular-shaped top plate 22 symmetrically, major axis 3 is installed in by bolt between the front end of two vertical channel-section steels 2 (Fig. 1 left end is a front end), two bearings at major axis 20 two ends place in the chute 2a of two sides, underframe is surrounded with the relative form of groove with two transverse channel steels 19 by two vertical channel-section steels 13 and forms, transverse channel steels 19 middle parts of rear end set firmly an opening three folding vertical plates 18 forward, this plate 18 is by hinged with the lever socket 17 at socket sensing underframe rear on two vertical plates that are parallel to each other in it, rear end following and hydraulic actuating cylinder 16 is affixed, the front end of hydraulic actuating cylinder push rod 10 self-hydraulic cylinders 16 stretches out, opening three folding vertical plates 15 forward can be sleeved on slidingly back and forth on the hydraulic actuating cylinder 16 (because of have on the vertical plate after leaning in this plate can with the circular hole of hydraulic actuating cylinder 16 outer cylindrical wall free-running fits), have the axis a pair of preceding hole and a pair of metapore of horizontal surface altogether on the front and back end of two vertical plates that are parallel to each other in this plate, pull bar 8 runs through preceding hole and hydraulic actuating cylinder push rod 10 front ends, two bearings 9 that its two ends set firmly place in two chute 13a, be provided with two symmetrical minor axises 14 between three folding vertical plate 15 rear ends and two vertical channel-section steels 13, one end of two minor axises 14 places two metapores and affixed with three folding vertical plates 15 respectively, the other end of two minor axises 14 places in two chute 13a by two bearings 12 respectively, pull bar 8 is connected with two minor axises 14 respectively by two connecting rods 11, every cover four-bar linkage is by bar 4, bar 5, bar 6, bar 7 and the axle that is connected thereof are formed, the upper end of bar 4 and major axis 3 are hinged, the upper end of bar 5 and major axis 20 are hinged, and the lower end of bar 6 and minor axis 14 are hinged.

Referring to Fig. 2, Fig. 2 mainly reflects the architectural feature of crane, crane is composed in parallel by the major axis 20 that is covered among shared major axis 3, major axis 24, major axis 25, major axis 26 and the figure by two cover four-bar linkages, major axis 26 is installed between the front end of two vertical channel-section steels 13, vertical channel-section steel 13 of underframe one side is provided with two decks 27, this car is in time spent not, hand lever 23 can be extracted out and blocked to be placed in two decks 27 from lever socket 17.

Referring to Fig. 3, the constructional aspect that has reflected single cover four-bar linkage among Fig. 3, the upper end of bar 4 is that the last fixed end of crane is hinged with the front end of upper frame by major axis 3, the lower end of bar 7 is that the following fixed end of crane is hinged with the front end of underframe by major axis 26, the upper end of bar 5 is that two bearings 28 of last sliding end by major axis 20 two ends of crane place in two chute 2a of upper frame, the lower end of bar 6 is that the downslide moved end and the minor axis 14 of crane is hinged, bearing 12 on the minor axis 14 places in the underframe chute 13a, bar 7, the middle part of bar 6 is hinged, the lower end of the upper end of bar 6 and bar 5 is hinged by major axis 24, the lower end of the upper end of bar 7 and bar 4 is hinged by major axis 25, bar 5 is hinged with the middle part of bar 4, four jiaos of rectangle underframe bottom are provided with road wheel, two front-wheels 33 are tight pulley, two trailing wheels 32 are wheel flutter, represented its symmetrically arranged side among Fig. 3, transverse channel steels 19 two ends of rear end are arranged with two after being tilted to, the permanent seat 31 that adopts channel-section steel to make, this outside vertical plane upside has a rectangular indentation 31a, the two ends of inverted U-shaped handlebar 29 are set with a hollow cylindrical fixed cover 30, the inboard of each fixed cover 30 all set firmly one can with the suitable square lock dog 30a of breach 31a, hinged and two square lock dog 30a can be inserted into respectively among two rectangular indentation 31a with two permanent seats 31 respectively at the two ends of handlebar 29, be pulled upwardly two fixed covers 30, make square lock dog 30a break away from corresponding breach 31a, handlebar 29 just can rotate in the scope at 120 degree angles around the hinge-point of itself and two permanent seats 31, in addition, pull handle 21, top board 22 is upper frame slip relatively also, make this hand barrow can pass through narrow turning and passage, the replacing position of heavier parts in the as close as possible product has all made things convenient for the maintenance of product and has reduced labour intensity.

Referring to Fig. 4, hand lever 23 rotatably is inserted in the lever socket 17, hydraulic actuating cylinder 16, hydraulic actuating cylinder push rod 10, lever socket 17, corresponding component in the horizontal jack of T82251 type that hand lever 23 whole employing Shanghai Baodebao Electromechanical Co., Ltd. (former Baoshan Jack General Factory, Shanghai) produce, these parts are reformulated one by vertical plate 18 and are suitable for horizontal jack of the present utility model, this horizontal jack is identical with the horizontal jack of T82251 type on principle of work and effect, now be summarized as follows: clockwise rotate hand lever 23, close fuel-return valve in hydraulic actuating cylinder 16 rear ends (for the purpose of simple and direct, the a pair of bevel gear in order to open and close fuel-return valve that will be among Fig. 4 between lever socket 17 and hydraulic actuating cylinder 16 rear ends omits), move hand lever 23 more up and down, the pump oil that the valve piston 16a that U-shaped horizontal plate 17a in the lever socket 17 will drive hydraulic actuating cylinder 16 rear ends does reciprocal lifting moves, hydraulic actuating cylinder push rod 10 front ends will be interior to preceding ejecting from hydraulic actuating cylinder 16, like this, the crane lifting that makes progress makes quilt on the upper frame carry parts and rises; Otherwise, rotate counterclockwise hand lever 23, open the fuel-return valve in hydraulic actuating cylinder 16 rear ends, hydraulic actuating cylinder push rod 10 is under the compressing of being carried parts on crane and the upper frame, move in the indentation hydraulic actuating cylinder 16 after getting, crane progressively shrinks downwards, and the quilt on the upper frame carries parts.

Certainly, described crane also can adopt other structure, as: increase the bar number in every cover four-bar linkage in pairs, so that increase the adjustable height of crane.Equally, the slide down moved end of crane places respectively in the chute of framework both sides up and down, be not limited to the sort of frame mode of describing in the most preferred embodiment, also can adopt other frame mode, as: connecting two major axis that can work the effect of strutting between the bottom of two loop bars 6 and between the top of two loop bars 5 respectively, so just, three flaps 15 of can dismantling, two minor axises 14 and major axis 20, the lower end of two loop bars 6 cooperates with two chute 13a by two bearings being located on two bearing pins (its length is less than minor axis 14) respectively, and the upper end of two loop bars 5 cooperates with two chute 2a by other two bearings of being located on two bearing pins (its length is less than minor axis 14) respectively again.Framework also can adopt the material of other shape about the rectangle, and being respectively equipped with two on the framework about need only guaranteeing can get final product with the chute that bearing 9, bearing 12 and bearing 28 match.Such conversion all drops within the protection domain of the present utility model.

Claims

1, a kind of hydraulic lifting hand barrow, four jiaos of rectangle underframe bottom are provided with road wheel, it is characterized in that: the fixed end up and down of the crane that two cover four-bar linkages compose in parallel is hinged with the front end of rectangle upper frame and underframe respectively, the slide down moved end of crane places respectively in the chute of framework both sides up and down, hydraulic actuating cylinder (16) is fixed on the rear end of underframe, hydraulic actuating cylinder push rod (10) front end places the interior pull bar (8) of underframe chute to be connected with two ends, and pull bar (8) is connected with the downslide moved end of crane by two connecting rods (11).

2, a kind of hydraulic lifting hand barrow according to claim 1, it is characterized in that: described crane composed as follows, the lower end of two loop bars (7) is hinged by major axis (26) and underframe, the lower end of two loop bars (6) cooperates with the chute of underframe by two bearings (12), every loop bar (7), the middle part of bar (6) is hinged, the upper end of two loop bars (4) is hinged by major axis (3) and upper frame, the upper end of two loop bars (5) cooperates with the chute of upper frame by the bearing (28) at major axis (20) two ends, the lower end of the upper end of two loop bars (6) and bar (5) is hinged by major axis (24), the lower end of the upper end of two loop bars (7) and bar (4) is hinged by major axis (25), and every loop bar (5) is hinged with the middle part of bar (4).

3, a kind of hydraulic lifting hand barrow according to claim 1, it is characterized in that: also be provided with rectangular-shaped top plate (22) on the upper frame, this top board (22) is by two flangings and upper frame fastening at its Width two parallel sides places, and two handles (21) are located on two flangings of rectangular-shaped top plate (22) symmetrically.

4, according to any one described a kind of hydraulic lifting hand barrow in the claim 1～3, it is characterized in that: the rear end of underframe is arranged with two permanent seats (31) after being tilted to, this outside vertical plane upside has a rectangular indentation (31a), the two ends of inverted U-shaped handlebar (29) are set with a hollow cylindrical fixed cover (30), the inboard of each fixed cover (30) all set firmly one can with the suitable square lock dog (30a) of breach (31a), hinged and two square lock dogs (30a) can be inserted into respectively in two rectangular indentation (31a) with two permanent seats (31) respectively at the two ends of handlebar (29).