CN201281116Y

CN201281116Y - Manpower type rocker drive deivce for medium and small sized hoists

Info

Publication number: CN201281116Y
Application number: CNU2008201189434U
Authority: CN
Inventors: 侯伟
Original assignee: Individual
Current assignee: Individual
Priority date: 2008-06-13
Filing date: 2008-06-13
Publication date: 2009-07-29
Anticipated expiration: 2018-06-13

Abstract

The utility model discloses a manpower type pendulum rod driving device of a small/middle-sized start-stop machine, which realizes that the original manpower type driving device of the small/middle-sized start-stop machine used in the field of the present water conservancy industry is changed into pendulum rod type driving from cranking handle type driving. The main spare parts of the manpower type pendulum rod driving device include a ratchet wheel, a ratchet shaft, a pawl, a U-type pendulum rod, a key, a sleeve and the like. The U-type pendulum rod transmits power to the ratchet shaft by a ratchet mechanism, and then the ratchet shaft drives an input shaft of the start-stop machine to work in a rotating manner. The driving device can conveniently and flexibly adjust force-exerting positions and force-applying angles, and the operation is easy; meanwhile, the original cranking handle circular motion is changed into the approximate straight reciprocating motion of the pendulum rod, thus eliminating the weak-power area of manual operation; moreover, by adopting the driving device, the original machine seat of the start-stop machine can be saved, the weight of the equipment is reduced, and the transportation as well as installation are convenient.

Description

A kind of manpower type fork drive unit of medium and small hoist

Technical field

The utility model relates to a kind of manpower type fork drive unit of medium and small hoist, and it has changed the manpower driving of medium and small hoist into the swing link type driving by original crank type driving.

Background technique

At present, the medium and small hoist that in water conservancy industry, uses, operation when supplying in order not influence unregulated power, generally be provided with the crank type Manpower driver, its principle is: crank is made circular movement under manpower drives, and the power input shaft of crank by hoist passes to the internal mechanical motion gear of hoist with power, by nut the gate elevating screw passed in motion at last, leading screw drives the gate motion, thereby reaches the purpose of gate lifting.But this crank type drive form exists following defective or deficiency: the one, because the physical dimension of crank is finalized the design, be not easy to the operator in the operating process and adjust force application part or firmly big or small according to individual's physical qualification; The 2nd, there be significantly " weak power district " in this circular movement pattern of crank in manual operation, be exactly that the people is difficult to the power of using at some special position; The 3rd, in order to guarantee the circular movement space of crank, need be at hoist positioned beneath support, to improve the working position of hoist power input shaft.

Summary of the invention

The objective of the invention is, adjust force application part in order to overcome being inconvenient to that existing medium and small hoist crank drives, have manual operation " weak power district ", need defective or deficiency such as mounting base, a kind of swing link type drive unit is provided, this device not only can satisfy the operator and adjust force application part or firmly big or small needs easily according to individual's physical qualification, simultaneously, the circular movement of original crank is changed into the near linear to-and-fro motion of fork, eliminated " the weak power district " of manual operation, and can save the support of original hoist.

The technological scheme that its technical problem that solves the utility model adopts is: the original position that crank is installed on the hoist power input shaft, a ratchet shaft that is fixedly connected with ratchet is set, this ratchet shaft is a hollow shaft, it cooperates with the form connection of hoist power input shaft by key connecting, " U " type fork is installed in both sides at ratchet, the rotation positioning axle of fork is ratchet shaft, the ratchet that cooperates with ratchet is installed on " U " type fork, at sleeve of " U " of fork type corner welding, use for the spreading fork.When the working position of ratchet mechanism direction was swung, the engagement of the teeth groove of ratchet and ratchet drives ratchet and turn over a certain angle, and ratchet turned over identical angle synchronously by driving the hoist power input shaft with its ratchet shaft that connects firmly at " U " type fork; When " U " type fork moves round about, ratchet moves with " U " type fork, the teeth groove that breaks away from ratchet, slip on the back of tooth, ratchet does not rotate, when sliding into a teeth groove, ratchet is under the elastic force effect of spring, insert teeth groove, if this moment, " U " type fork was swung to the working position of ratchet mechanism direction once more, above-mentioned transmission of movement will take place once more.Like this, when " U " type fork was made continuous reciprocally swinging, ratchet shaft just drove the hoist power input shaft and does unidirectional rotation at intermittence, thereby had reached the purpose that drives hoist work.The ratchet profile of tooth can adopt asymmetric sawtooth, lineal shape rake tooth or circular arc rake tooth, ratchet is installed on " U " type fork by a pawl axis, under the tension of extension spring, reset, when requiring hoist to work in the other direction, this drive unit can be pulled down from the hoist power input shaft, ratchet shaft is installed on the hoist power input shaft in the other direction gets final product; The ratchet profile of tooth also can adopt the rectangular teeth of symmetry, ratchet is a cylinder wedge shape spring pin formula ratchet, be installed on " U " type fork by pin formula ratchet housing, cylinder wedge shape spring pin formula ratchet can be around its rotational, radial location during work cooperates realization by the strut rail of its afterbody with the rectangle groove of pin formula ratchet housing one end, when requiring hoist to work,, also can realize the break-in work of hoist easily in the other direction by reversing ratchet.

The beneficial effects of the utility model are, (1) rapid operation: owing to adopted the form of fork, and the fork design has tube-in-tube structure, operator can be according to individual's physical qualification, select the length and the working position of fork extension bar, adjust flexibly force application part and angle out of strength, simultaneously, the reciprocating sliding campaign of near linear has avoided that original crank circular movement must pass through is not easy to angle---" the weak power district " of exerting oneself; (2) can improve keying speed:, when the design hoist, just can suitably dwindle the velocity ratio of driving mechanism, thereby reach the effect that improves keying speed owing to there is (1) advantage.(3) reduce weight of equipment, convenient transportation is installed: the hoist of new production behind employing the utility model drive unit, can save original support part; Owing to there is advantage (2), under the situation of suitably dwindling the driving mechanism velocity ratio, the physical dimension of hoist driving mechanism can correspondingly diminish again, can reach the purpose that reduces weight of equipment equally.

Description of drawings

The utility model is described in further detail below in conjunction with drawings and Examples.

Fig. 1 is first an embodiment's of the present utility model plan view.

Fig. 2 is the left view of Fig. 1, demonstration be the working positions of each parts of the utility model at hoist power input shaft axial direction.

Fig. 3 is second an embodiment's of the present utility model plan view

Among Fig. 1: 1. ratchet, 2. ratchet shaft, 3. hoist power input shaft, 4. ratchet, 5. " U " type fork, 6. extension spring;

Among Fig. 2: 7. key, 8. tension spring shaft, 9. pawl axis, 10. sleeve;

Among Fig. 3: 11. cylinder wedge shape spring pin formula ratchets, 12 rectangular teeth ratchets, 13. springs, 14. pin formula ratchet housings.

Embodiment

In Fig. 1, first embodiment shown in Figure 2, ratchet (4) is installed on " U " type fork (5) by pawl axis (9), and ratchet shaft (2) cooperates connection by key (7) with hoist power input shaft (3).When " U " type fork (5) is subjected to manpower to drive swing clockwise, ratchet (4) inserts the teeth groove of ratchet (1), drive ratchet (1) and turn over a certain angle, and ratchet (1) turns over identical angle synchronously by driving hoist power input shaft (3) with its ratchet shaft that connects firmly (2) by key (7); " U " type fork (5) is when counterclockwise motion, ratchet (4) moves with " U " type fork (5), the teeth groove that breaks away from ratchet (1), slip on the back of tooth, ratchet (1) does not rotate, when sliding into a teeth groove, ratchet (4) is under the tension of extension spring (6), insert teeth groove, if " U " type fork this moment (5) swing clockwise once more, above-mentioned transmission of movement will take place once more.Like this, when " U " type fork (5) was made continuous reciprocally swinging, ratchet shaft (2) just drove hoist power input shaft (3) and does unidirectional rotation rotation at intermittence, thereby has reached the purpose that drives hoist work.When requiring hoist to work in the other direction, this drive unit can be pulled down from hoist power input shaft (3), ratchet shaft (2) is installed in hoist power input shaft (3) more in the other direction upward gets final product.

In second embodiment shown in Figure 3, cylinder wedge shape spring pin formula ratchet (11) be installed in " U " type fork (5) by pin formula ratchet housing (14) with the relative position of sleeve (10) transverse slat on, at " U " type fork (5) when swinging clockwise, cylinder wedge shape spring pin formula ratchet (11) inserts the teeth groove of rectangular teeth ratchet (12), drive rectangular teeth ratchet (12) and turn over a certain angle, and rectangular teeth ratchet (12) turns over identical angle synchronously by driving hoist power input shaft (3) with its ratchet shaft that connects firmly (2); " U " type fork (5) is when counterclockwise motion, cylinder wedge shape spring pin formula ratchet (11) moves with " U " type fork (5), the teeth groove that breaks away from rectangular teeth ratchet (12), slip on the back of tooth, rectangular teeth ratchet (12) does not rotate, when sliding into a teeth groove, cylinder wedge shape spring pin formula ratchet (11) is under the elastic force effect of spring (13), insert teeth groove, if " U " type fork this moment (5) swing clockwise once more, above-mentioned transmission of movement will take place once more.Like this, when " U " type fork (5) was made continuous reciprocally swinging, ratchet shaft (2) just drove hoist power input shaft (3) and does unidirectional rotation rotation at intermittence, thereby has reached the purpose that drives hoist work.When requiring hoist to work in the other direction, only need the strut rail of cylinder wedge shape spring pin formula ratchet (11) afterbody is extracted from the rectangle groove of pin formula ratchet housing (14) one ends, again insert in the rectangle groove behind cylinder wedge shape spring pin formula ratchet (11) axis Rotate 180 °, swing " U " type fork (5) can be started working.

In the utility model driving device structure, ratchet shaft (2) is an interference fit with cooperating of ratchet (1) or rectangular teeth ratchet (12), adopt key connecting or welding to connect firmly, ratchet shaft (2) adopts Spielpassung with " U " type fork (5), and " U " type fork (5) can freely be rotated around ratchet shaft (2); The endoporus of ratchet shaft (2) and hoist power input shaft (3) adopt key connecting, and fit system is a Spielpassung.

Claims

1, a kind of manpower type fork drive unit of medium and small hoist, mainly form by ratchet, ratchet shaft, ratchet, " U " type fork, key and sleeve etc., it is characterized in that: on the hoist power input shaft, a ratchet shaft that is fixedly connected with ratchet is set, " U " type fork is installed in axial both sides at ratchet, the rotation positioning axle of fork is ratchet shaft, and the ratchet that cooperates with ratchet is installed on the fork, at sleeve of " U " of fork type corner welding.

2, the manpower type fork drive unit of a kind of medium and small hoist according to claim 1, it is characterized in that: the ratchet profile of tooth is asymmetric sawtooth, lineal shape rake tooth or circular arc rake tooth, ratchet is installed on " U " type fork by a pawl axis, resets under the tension of extension spring.

3, the manpower type fork drive unit of a kind of medium and small hoist according to claim 1, it is characterized in that: the ratchet profile of tooth is the rectangular teeth of symmetry, ratchet is a cylinder wedge shape spring pin formula ratchet, be installed on " U " type fork by pin formula ratchet housing, cylinder wedge shape spring pin formula ratchet can be around its rotational, and the radial location during work cooperates realization by the strut rail of its afterbody with the rectangle groove of pin formula ratchet housing one end.