CN2213047Y

CN2213047Y - Hydraulic wrench

Info

Publication number: CN2213047Y
Application number: CN 94223776
Authority: CN
Inventors: 朱斌; 季长海
Original assignee: Individual
Current assignee: Individual
Priority date: 1994-10-19
Filing date: 1994-10-19
Publication date: 1995-11-22
Anticipated expiration: 2004-10-19

Abstract

The utility model relates to an automotive tool used for tightening and dismounting, particularly a hydraulic automotive tool. The high hydraulic energy is used supplied by a superhigh pressure hydraulic system. A piston arranged in an oil cylinder body drives a piston-rod and a rack to do the linear movement through an oil passage arranged on the casing of the utility model. A toothed plate meshed with the rack can do the swinging movement of the reciprocating angle. The reciprocating swinging movement is that a ratchet wheel does the one-way circumference rotation through the one-way locking function of the ratchet wheel and a ratchet pawl. Thus, the high hydraulic energy can be transferred to a driving head inserted in the ratchet wheel to be used as a torque to drive a spanner to tighten or loose large screw bolts or nuts. The heavy manual work can be replaced. The safety of the working object is ensured.

Description

Hydraulic wrench

The utility model relates to a kind of power-driven tool fastening, dismounting, particularly a kind of hydraulic pressure power-driven tool of being used for.

For in large-scale metallurgical, chemical industry, the energy, bargh and the boats and ships or the large-scale nut of important events fastening or get loose, the artificial nationality crowbar of also main dependence is operated at present, when getting loose, sometimes also will be to getting loose again after its local heat, have in addition nut prescinded and machine could be unloaded support.This way is labor intensive not only, and damaged screw pair very easily.

The purpose of this utility model is to provide a kind of facility, the hydraulic plate hand-motion driving head that provides energy by extra high voltage system to bolt (nut) with moment, make bolt (nut) progressively tighten or unclamp, make parts stress equalizations such as securing member such as valve, flange, bearing block, support and casing, guarantee that the safety of installations and facilities is intact.

The utility model is made up of housing, hydraulic part and running part, and hydraulic part is made up of oil duct, oil cylinder, piston, piston rod and seal; Running part is made up of tooth bar, tooth plate, ratchet and ratchet, tooth bar and tooth plate engagement.

Hydraulic oil is to enter oil cylinder in the housing through the oil duct two way alternate, when piston is in left end, hydraulic oil is pressed into from the A oil duct, the oil on piston the right extrudes from the B oil duct, move to right-hand member from left to right to promote piston, otherwise hydraulic oil is pressed into from the B oil duct, the oil on the piston left side extrudes from the A oil duct, promotes piston and moves to left end from right to left.Piston drives piston rod and tooth bar is moved as linear reciprocation.Moving of tooth bar makes tooth plate make reciprocal angular oscillatory motion, and tooth plate drives ratchet and rotates to a direction, during opposite direction, by ratchet with ratchet lock.The result does once to move back and forth when piston, ratchet rotates an angle to a direction, plug special-purpose spline or hexagonal driving head on the ratchet, the high-pressure and hydraulic energy can be passed to the sleeve that is contained in the other end on the driving head, the bolt (nut) that is acted on is carried out fastening or gets loose.

The utility model adopts ultrahigh-pressure hydraulic to make motive power, can make the Series Hydraulic wrench, to adapt to different needs according to the size of operation thing.Hydraulic pressure wrench of the present utility model, the moment that offers driving head can be from 400 Newton meters until 55000 Newton meters, and its construction object diameter is from 30mm to 300mm.

The utility model compared with prior art, its advantage is:

1, can convert mechanical energy to hydraulic pressure and replace ARTIFICIAL FORCE, its moment can increase greatly, and large-scale bolt is released and any machine components of unlikely destruction with being able to complete safety;

2, the operation scope that takes up room is little, machine arrange allow compact, the cabin of saving plant area, especially boats and ships;

3, the energy of hydraulic system generation can become flexible or fastening bolt lentamente, does not have impulsive force, plays the effect of protection screw thread pair.

Description of drawings

Fig. 1 is a cut-open view of final assembly of the present utility model

Fig. 2 is the front view of guide rail 26

Fig. 3 is the side view of guide rail 26

Fig. 4 is the front view of tooth bar 19

Fig. 5 is the side view of tooth bar 19

Fig. 6 is the front view of side plate 27

Fig. 7 is the cutaway view of side plate 27

Fig. 8 is the front view of ratchet 17

Fig. 9 is the side view of ratchet 17

Figure 10 is the front view of driving head

Figure 11 is the upward view of driving head

Embodiment

Embodiment Fig. 1 of the present utility model is made up of wrench housing, hydraulic part and running part, and housing 28 left sides are as the oil cylinder 22 of hydraulic part, and running part is installed on the right.The upper right side nationality screw 24 of housing 28 is fixed with guide rail 26(Fig. 2,3 of keyway), tooth bar 19 tops have key (Fig. 4,5) to embed to limit in the groove of guide rail 26 tooth bar 19 to move along groove.Guide rail 26 can be a rectangle with the keyway and the key of tooth bar 19, also can be swallow-tail form.Oil cylinder 22 is joined with hydraulic press by A oil duct 20 and B oil duct 21, and piston 3 is arranged in the oil cylinder 22, and piston 3 has piston rod 6, and the circumference of piston 3 has groove, is equipped with back-up ring 5 and sealing ring 4 in the groove; 11 of piston rod 6 and fairleads are equipped with back-up ring 23 and sealing ring 10.Fairlead 11 is to be pressed in the housing 28 with softer metal, with the concentricity of assurance piston rod and the sealing of himself.

Ring washer

5 and 23 and sealing ring 4 and 10 guarantee the sealing of high-voltage oil cylinders 22 to screw in and to withstand piston 3 by 2 sealings of plug 1 nationality sealing ring.When high oil is pressed into oil cylinder 22 from A oil duct 20, promoting piston 3 moves right to the right-hand member of oil cylinder 22, oil in the cylinder pushes back oil pump by B oil duct 21, otherwise, hydraulic oil is pressed into oil cylinder 22 from B oil duct 21, promotes piston 3 right-to-lefts and moves to the cylinder left end, and the end of piston rod 6 is connected with tooth bar 19 nationality pins 12, moving of piston 3 drives tooth bar 19 by piston rod 6 and slides along guide rail 26.The bottom righthand side nationality pin 14 of housing 28 and screw 29 are equipped with two side plate 27(Fig. 6,7) 27 of side plates are equipped with tooth plate 18, the tooth of tooth plate 18 and tooth bar 19 engagements, side plate 27 bottom circular holes are concentric with the circular hole under the tooth plate 18, the projection of ratchet 17 (Fig. 8,9) just in time is stuck in the hole of biside plate 27,18 of ratchet 17 and tooth plates have ratchet 15 nationality springs 16 to block ratchet 17, make 17 on ratchet make one-directional rotation.Do once to move when piston 3, tooth plate 18 is swung once, and ratchet 17 is to a direction rotating certain angle, and piston 3 continuously moves back and forth, and ratchet 17 can synchronously rotate to a direction.The mesopore of ratchet 17 inserts driving head (Figure 10).One end of driving head insertion ratchet 17 can be spline-like and also can be hexagon (Figure 11).The other end is square, and makes transition drive impact wrench commonly used with this and carries out Job Operations.

The accidental bump of the driving head head of hydraulic pressure wrench of breaking that flies out is fixed with block 7 at the middle and lower part of housing 28 nationality pin 9 and ball pin 8 when preventing operation.

Claims

1, a kind of hydraulic pressure wrench is characterized in that being made up of wrench housing, hydraulic part and running part, and the housing left side is as the oil cylinder of hydraulic part, and running part is laid on the right;

(1) oil cylinder (22) is joined by the valve of A oil duct (20) and B oil duct (21) and hydraulic press, as the input/output port of hydraulic oil;

(2) in the oil cylinder (22) piston (3) is arranged, piston (3) has piston rod (6), piston (3) to oil cylinder (22) wall, piston rod (6) to fairlead (11), the back-up ring (5,23) and the sealing ring (4,10) that guarantee sealing all are housed, and the left top of housing (28) is screwed in by the plug that has sealing ring (2) (1) and withstands piston (3);

(3) the upper right side nationality screw (24) of housing (28) fixedly has the guide rail (26) of keyway, the terminal nationality pin (12) of piston rod (6) is connected with the tooth bar that has key (19), key inserts the keyway of guide rail (26), piston (3) is pressed about hydraulic oil to move, and drives tooth bar (19) by piston rod (6) and slides along guide rail (26);

(4) housing (28) bottom righthand side nationality pin (14) and screw (29) are fixed with two side plates (27), the circle of ratchet (17) is with tooth plate (18) outward, the two ends ledge of ratchet (17) is enclosed within the hole of side plate, the tooth of tooth plate (18) and tooth bar (19) engagement have ratchet (15) the nationality spring (16) that makes ratchet (17) make one-directional rotation to block ratchet (17) between ratchet (17) and tooth plate (18);

(5) tooth bar (19) that is driven by piston (3), piston rod (6) horizontally slips, tooth plate (18) does to swing accordingly, by ratchet (15) and spring (16) orientation, make ratchet (17) to a direction rotating certain angle, piston (3) is back and forth movement continuously, and ratchet (17) rotates to a direction synchronously continuously;

(6) insert driving head in ratchet (17) hole and do transition to drive impact wrench commonly used.

2, hydraulic pressure wrench according to claim 1 is characterized in that fairlead (11) is to be pressed in the housing (28) with softer metal.

3, hydraulic pressure wrench according to claim 1 is characterized in that the keyway and the key of guide rail (26) and tooth bar (19), can be rectangle, can also be swallow-tail form.

4, hydraulic pressure wrench according to claim 1 is characterized in that of driving head insertion ratchet can be a spline-like, also can be hexagonal.

5, hydraulic pressure wrench according to claim 1, the moment that it is characterized in that offering driving head can from 400 to 55000 Newton meters, and diameter of its construction object can be from 30mm to 300mm.