CN202609823U

CN202609823U - Manual fast-folding lifting mechanism

Info

Publication number: CN202609823U
Application number: CN 201220132763
Authority: CN
Inventors: 李民强
Original assignee: TIANWEI ELECTRONIC SYSTEM ENGINEERING Co Ltd XI'AN
Current assignee: TIANWEI ELECTRONIC SYSTEM ENGINEERING Co Ltd XI'AN
Priority date: 2012-03-31
Filing date: 2012-03-31
Publication date: 2012-12-19
Anticipated expiration: 2022-03-31

Abstract

The utility model discloses a manual fast-folding lifting mechanism which comprises a base, a first support and a second support. A rotary shaft is disposed above the base. The bottom periphery of the rotary shaft is provided with a limit groove. A footboard is disposed on the base, the middle of the footboard is hinged to the top of the base, the lower portion of the footboard is connected to the lower portion of the base through a pressure spring, the upper portion of the footboard is connected with a bolt through a pin, and the tail end of the bolt contacts with the limit groove. A vertical column is disposed above the base through the rotary shaft, the bottom of the vertical column is hinged to the middle of the rotary shaft, and the hinged end of the vertical column is connected to the upper portion of the rotary shaft. A manual winch is fixed on the vertical column. A first pulley is fixed at the top end of the vertical column. One end of a beam is hinged to the vertical column. A second pulley is disposed at the other end of the beam. A wire rope in the manual winch sequentially passes through grooves of the first pulley and the second pulley and is suspended below the second pulley. One end of an oscillating bar is hinged to the vertical column, and the other end of the oscillating bar is provided with a bolt hole and is connected with the beam. The manual fast-folding lifting mechanism is simple in structure, small in size, light in weight, convenient to operate and low in processing precision requirement.

Description

A kind of manual fast folding derricking gear

Technical field

The utility model belongs to the operational chain of command field, relates to a kind of manual fast folding derricking gear.

Background technology

At present, in the operational chain of command field, middle-size and small-size radar aerial is installed on the vehicular platform or when vehicular platform is pulled down, needs special-purpose lifting appliance to lift by crane.Because operational chain of command in the open air, according to the needs of battlefield tactics, radar aerial need be got off, when getting on the bus work, needed the crane that rises of configure dedicated.The general-duty lifting appliance adopts hydraulic operating system, and system is huge, and oil leakage phenomenon often appears in complex structure, also needs enough engine installations.

Summary of the invention

To the weak point of the problems referred to above, the purpose of the utility model is, a kind of manual fast folding derricking gear is provided, but this mechanism's rapid deployment carries out hoisting heavy, but fast folding.It is simple in structure, and oad is little, and is in light weight, easy to operate, and requirement on machining accuracy is not high.

In order to achieve the above object, the realization technical scheme of the utility model is following:

A kind of manual fast folding derricking gear is characterized in that, this mechanism comprises base, first bracing frame and second bracing frame that is installed on the fixed platform; The top of this base is equipped with rotating shaft; On the circumference of rotating shaft bottom position-limited trough is arranged; Installation foot pedal on base, the stage casing of stretcher and base upper articulation, the bottom of stretcher is connected the base bottom through stage clip, and stretcher top connects latch through bearing pin, the end contact position-limited trough of latch;

Column is installed in the base top through rotating shaft, and column bottom and rotating shaft middle part are hinged, and captives joint with rotating shaft top through first latch in the pin jointed end of column top; Base, first bracing frame and second bracing frame are installed on same the straight line;

Hand winch is fixed on the column; First pulley is fixed on the top of column, and an end and the column of crossbeam are hinged, and the crossbeam other end is equipped with second pulley, and the steel rope in the hand winch hangs on second pulley below behind the groove through first pulley, second pulley successively; The crossbeam stage casing is provided with pin hole, and an end and the column of fork are hinged, and this end that the other end of fork is provided with pin hole and fork connects crossbeam.

The utility model also comprises following other technologies characteristic:

Have handle and crank on the said hand winch.

The end of said steel rope is connected with hook.

Description of drawings

Fig. 1 is the structural representation of the utility model.

Fig. 2 is the locking state scheme drawing of rotating shaft.

Fig. 3 is the releasing orientation scheme drawing of rotating shaft.

Fig. 4 is the utility model state conversion process scheme drawing.

Fig. 5 is the utility model folded state scheme drawing.

Below in conjunction with the accompanying drawing and the specific embodiment the utility model is further described.

The specific embodiment

Like Fig. 1, Fig. 2, shown in Figure 3, the manual fast folding derricking gear of the utility model comprises the base 1, first bracing frame 16 and second bracing frame 15 that are installed on the fixed platform; The top of this base 1 is equipped with rotating shaft 2; Be evenly distributed with position-limited trough 20 on the rotating shaft 2 bottom circumference; Installation foot pedal 17 on base 1, the stage casing of stretcher 17 and base 1 upper articulation, the bottom of stretcher 17 is connected base 1 bottom through stage clip 18, and stretcher 17 tops connect latch 19 through bearing pin, the end contact position-limited trough 20 of latch 19; When operating personal foot-treadle 17, stretcher 17 rotates drive latch 19 and outwards moves, and throws off with position-limited trough 20, and rotating shaft 2 is unclamped rotating shaft 2 this moment and can on base 1, be rotated; The pin of operating personal unclamps stretcher 17, and stage clip 18 outwards promotes stretcher 17, and stretcher 17 rotates drive latch 19 and moves inward, and latch 19 inserts position-limited troughs 20, and rotating shaft 2 lockings can not be rotated;

Be equipped with pin hole on rotating shaft 2 tops and first bracing frame 16; Column 4 is installed in base 1 top through rotating shaft 2, and column 4 bottoms and rotating shaft 2 middle parts are hinged, and captives joint with rotating shaft 2 tops through first latch 3 in the pin jointed end of column 4 top; Base 1, first bracing frame 16 and second bracing frame 15 are installed on same the straight line.

Hand winch 7 is fixed on the column 4, have on the hand winch 7 crank 5 handles 6 and; First pulley 8 is fixed on the top of column 4; One end and the column 4 of crossbeam 10 are hinged; Crossbeam 10 other ends are equipped with second pulley 11; Steel rope 9 in the hand winch 7 hangs on second pulley, 11 belows behind the groove through first pulley 8, second pulley 11 successively, and hook 12 is connected the end of steel rope 9; Crossbeam 10 stage casings are provided with pin hole, and an end and the column 4 of fork 14 are hinged, and this end that the other end of fork 14 is provided with pin hole and fork 14 connects crossbeam 10 through second latch 13;

When needing to use the utility model hoisting heavy, column 4 turns to desired location around base 1, unclamps the 17 locking rotating shafts 2 of position-limit foot pedal; Steel rope 9 in the hand winch 7 is undertaken around putting by shown in Figure 1, steel rope must groove through first pulley 8, second pulley 11 in, just weight is suspended on the hook 12 again, operating personal buttresses handle 6 on the other hand, rotates crank 5 on the other hand and can weight mentioned or landed; The position that weight is mentioned, landed can be adjusted through rotating column 4, and when needing to rotate column 4, left hand is caught handle 6; Right crus of diaphragm is stepped on position-limit foot pedal 17; Move crossbeam 10 gently with the right hand, can move weight to need landing position after, right crus of diaphragm unclamps position-limit foot pedal 17; After position-limit foot pedal 17 unclamps and puts in place, can proceed hoisting heavy.

As shown in Figures 2 and 3,, earlier second latch 13 is extracted, steel rope 9 is packed up,, be communicated with crank capstan 7 and fold into position as shown in Figure 4 downwards crossbeam 10, fork 14 with after the weight lifting completion that lifting appliance is folding; Again first latch 3 is extracted, column 4, fork 14 and crossbeam 10 integral body are folded into location status as shown in Figure 5 downwards, then first latch 3, second latch 13 are inserted into the position like Fig. 5.So just accomplished the manual folding process of derricking gear.

Need folding the utility model be launched during hoisting heavy once more: earlier first latch 3, second latch 13 are extracted; With column 4, fork 14, crossbeam 10, hold up location status as shown in Figure 4 together with crank capstan 7; First latch 3 is plugged; With crossbeam 10, when fork 14 is raised to position as shown in Figure 1, second latch 13 is plugged, the steel ropes 9 in the hand winch 7 are undertaken around putting by shown in Figure 1 then.

Claims

1. a manual fast folding derricking gear is characterized in that, this mechanism comprises base (1), first bracing frame (16) and second bracing frame (15) that is installed on the fixed platform; The top of this base (1) is equipped with rotating shaft (2); On the circumference of rotating shaft (2) bottom position-limited trough (20) is arranged; Go up installation foot pedal (17) at base (1); The stage casing of stretcher (17) and base (1) upper articulation; The bottom of stretcher (17) is connected base (1) bottom through stage clip (18), and stretcher (17) top connects latch (19) through bearing pin, the end contact position-limited trough (20) of latch (19);

Column (4) is installed in base (1) top through rotating shaft (2), and column (4) bottom and rotating shaft (2) middle part are hinged, and captives joint with rotating shaft (2) top through first latch (3) in the pin jointed end of column (4) top; Base (1), first bracing frame (16) and second bracing frame (15) are installed on same the straight line;

Hand winch (7) is fixed on the column (4); First pulley (8) is fixed on the top of column (4); One end of crossbeam (10) and column (4) are hinged; Crossbeam (10) other end is equipped with second pulley (11), and the steel rope (9) in the hand winch (7) hangs on second pulley (11) below behind the groove through first pulley (8), second pulley (11) successively; Crossbeam (10) stage casing is provided with pin hole, and an end of fork (14) and column (4) are hinged, and this end that the other end of fork (14) is provided with pin hole and fork (14) connects crossbeam (10).

2. manual fast folding derricking gear as claimed in claim 1 is characterized in that, has handle (6) and crank (5) on the said hand winch.

3. manual fast folding derricking gear as claimed in claim 1 is characterized in that the end of said steel rope (9) is connected with hook (12).