CN2350167Y

CN2350167Y - Open hydraulic wrench

Info

Publication number: CN2350167Y
Application number: CN 98227475
Authority: CN
Inventors: 江华葆
Original assignee: Individual
Current assignee: Individual
Priority date: 1998-07-28
Filing date: 1998-07-28
Publication date: 1999-11-24
Anticipated expiration: 2008-07-28

Abstract

The utility model relates to a tool used for the advance tightening and the assembly and disassembly of a screw nut, which comprises a high-voltage pump, a reversing valve, a pointer, a pressure gauge, a high and low pressure rubber pipe, a joint, an oil cylinder with double functions, a rocker, a resistant power rod, and a sleeve device. The utility model is characterized in that the sleeve device is provided with six different structural modes; the internal of the oil cylinder is provided with an automatic unloading device; the utility model has the advantages of easy manufacturing, time and labor saving, which can be used for the assembly and disassembly of the screw nut of work equipment such as metallurgy equipment, mining equipment, petrochemical equipment, electric power equipment, shipbuilding equipment, etc.

Description

The open hydraulic spanner

The utility model relates to the hydraulic machinery field of tool, the particularly a kind of nut pretension of the narrow and small occasion of accurate pretension and locus and hydraulic spanner of dismounting of being applicable to.

A kind of hydraulic spanner is arranged in the prior art, be applicable to general occasion mounting or dismounting nut.It is made up of high-pressure pump, reversal valve, high-pressure rubber pipe and joint, oil cylinder, rocking bar, counter-force bar, ratchet, spring, Hexagonal jacket, the hydraulic oil of high-pressure pump output moves reciprocatingly through the piston rod that sebific duct enters oil cylinder promotion oil cylinder, piston rod drives rocking bar and swings back and forth, ratchet on the rocking bar drives ratchet and makes folk prescription to rotatablely moving to drive Hexagonal jacket, thereby tightens or tear open loose nut.Control the size of screw-down torque by controlling the oil pressure size, reliable with this pretightning force size (moment method) of controlling thread connection to guarantee pretension.But this spanner oil cylinder stroke during to extreme position oil pressure increase to maximum, the oil circuit overflow can not be used the hydraulic system heating in overflow situation work, even is damaged oil cylinder and other building blocks of spanner; This spanner only can be used the moment method pre-load nut; Overall dimensions are bigger, are not suitable for the narrow and small occasion in locus common on the engineering; Often occur tiny hardening crack and fatigue easily because ratchet quenches, when high capacity is worked, may burst apart and hurt sb.'s feelings.

The purpose of this utility model be to provide a kind of function comparatively complete, be suitable for different spatial hydraulic spanner that require, safe and reliable, available moment method and nut corner method be pre-load nut and two kinds of methods are checked mutually simultaneously; Oil cylinder stroke is during to extreme position, and hydraulic system automatic deloading is with protection equipment and cut down the consumption of energy and reduce heating; The sleeve arrangement of six kinds of different structures of configuration is to satisfy the different requirements of different spatial to its external form size; Make a safety device to guarantee when ratchet bursts apart, the not injuring person and equipment.

Open hydraulic spanner according to the utility model design, it comprises: counter-force bar 1, rocking bar 3, sleeve arrangement 4, oil cylinder 5, oil path block 6, high-voltage quick joint 7, low pressure snap joint 8, bearing pin 9, high-pressure hose 10, low-pressure hose 11, splicing sleeve 12, Pressure gauge 13, reversal valve 14 (electronic or manual), high-pressure oil pump 15 (electronic or manual), its characteristics are to be provided with in the oil cylinder 5 automatic relief arrangement: oil cylinder 5 inner piston rods 16 are made hollow, stroke measurment bar 19 is housed in piston rod 16,20, check valve 18,21, when piston moves to range, hydraulic oil is through check valve 21, passage oil sump tank 5 off-loads of measuring stick 20, when piston rod movement arrived zero-bit, hydraulic oil was through check valve 18, passage oil sump tank 5 off-loads of measuring stick 19.

In sleeve arrangement 4, the lower end design of interior Hexagonal jacket has the trapezoidal tooth of rectangular, to pass through Hexagonal jacket in this another through hole of tooth form transmission, only needing to increase the interior Hexagonal jacket of this through hole is that dismantled and assembled double nut or screw rod are appeared than long nut, and need not special nigger.

The structure of sleeve arrangement and with the six kinds of different forms that are connected with of ratchet mechanism, to satisfy different space requirements and different ease-to-operate requirements.First kind of form be sleeve with as unit's axle of the hinged point of rocking bar, and make one with the square shaft of ratchet square hole sliding fit transmission moment of torsion, the ratchet outside is provided with the safety anti-explosive cover.Ratchet Drive ratchet on the rocking bar, ratchet are by square hole drive socket, and this pattern is applicable to the occasion that general locus requires, and is easy to use.Second kind of form is, the sleeve upper end is shaped on ratchet and first hole, unit's axle of the hinged point of the direct drive socket rocking bar of the ratchet on the rocking bar is fixed on the rocking bar, the shaft extension of certain-length is made at this yuan axle two ends, the diameter of shaft extension is equal to or less than first shaft diameter, and first hole cunning of this shaft extension and sleeve upper end is equipped with location ratchet transmission.This form is applicable to the occasion that the locus is less, and is easy to use.The third pattern is, unit's axle of the hinged point of sleeve and rocking bar is assembled into one, is shaped on the direct drive socket of ratchet of ratchet, rocking bar both ends of the surface on sleeve, and this pattern is applicable to the occasion that the locus is narrow and small, and it is comparatively convenient to use.The 4th kind of form is (sleeve, the hinged unit of rocking bar axle, ratchet are separately), the sleeve upper end is shaped on the shape face, join with the shape face cunning in the outer garden of ratchet, the shaft extension cunning of the hinged unit of ratchet endoporus and rocking bar axle is joined, ratchet Drive ratchet on the rocking bar, the sleeve of the outer first shape over glaze transmission of ratchet upper end band shape face.The shape face can be interior hexagon, square, spline etc.This narrow and small especially occasion in form application space position.It is comparatively convenient to operate.The 5th kind of form be, the sleeve upper end is shaped on internal tooth, and with the external tooth engagement on the rocking bar, the interior jump ring of hinged unit's axle etc. is fixed on the rocking bar.The direct drive socket of external tooth on the rocking bar.This narrow and small especially occasion in form application space position, easy to operate, manufacturing is had relatively high expectations.The 6th kind of form is that the outer unit of sleeve is shaped on external tooth, with the internal tooth engagement on the hinged first axle of rocking bar, step is made by the outer unit of hinged point, be provided with thereon external tooth, with rocking bar on internal tooth engagement, hinged unit spool is fixed on the rocking bar, above-mentioned profile of tooth can be an involute teeth, first post tooth, spline etc.This form is applicable to that height and position is narrow and small especially, and horizontal level requires not tight occasion, and easy to operate, making is had relatively high expectations.

The utility model has been avoided Hydraulic Station (high-pressure pump group) heating, and has effectively been protected oil cylinder and other parts owing to be provided with oil cylinder extreme position system automatic relief arrangement; Because sleeve arrangement has six kinds of different versions, the utility model can be adapted to the nut mounting or dismounting of industrial nearly all occasion, and main frame is compatible can exchange for the sleeve arrangement of six kinds of different structures and a cover, only needs a cover main frame can solve the waste that all occasions nut dismounting problem is caused in the specification limit that this machine is suitable for; Owing to can read screw-down torque and nut corner when giving jack panel in good time, make and give tight moment method and nut corner method can be checked mutually simultaneously, improved and given tight precision; Owing to, use safer, reliable may explosion place having added anti-explosion cover.

Now the utility model is described in further detail in conjunction with the accompanying drawings.

Fig. 1 forms schematic diagram for the open hydraulic spanner

Fig. 2 is an A jacket cartridge structure chart

Fig. 3 is a Type B sleeve arrangement structure chart

Fig. 4 is a C jacket cartridge structure chart

Fig. 5 is a D jacket cartridge structure chart

Fig. 6 is an E jacket cartridge structure chart

Fig. 7 is a F jacket cartridge structure chart

Fig. 8 is the relief arrangement system schematic

Among the figure 1, counter-force bar 2, pointer 3, rocking bar 4, sleeve arrangement 5, oil cylinder 6, oil path block 7, high-voltage quick joint 8, low pressure snap joint 9, bearing pin 10, high-pressure hose 11, low-pressure hose 12, splicing sleeve 13, Pressure gauge 14, reversal valve 15, high-pressure oil pump 16, piston rod 17, cylinder body 18, check valve I 19, measuring stick I 20, measuring stick II 21, check valve II 23, screw 24, anti-explosion cover 25, spring 26, square hole ratchet 27, sleeve 28, lid 29, axle 30, ratchet 31, sleeve 32, axle 33, sleeve 34, axle 35, spring volume 36, sleeve 37, axle 38, spring volume 39, sleeve 41, driving member 42, sleeve

Among Fig. 1 and Fig. 8, the pressure oil of high-pressure oil pump (electronic or manual) output is behind reversal valve 14, enter high-pressure hose 10, high-voltage quick joint 7, oil path block 6 enters the plunger shaft of oil cylinder 5,, promote piston rod 16 motions, piston rod 16 drives rocking bar 3 swings, and the fluid of plunger shaft is got back in the fuel tank of high-pressure oil pump 15 from oil path block 6, low-pressure hose 11, low pressure snap joint 8, reversal valve 14.Pointer 2 is housed on the rocking bar 3, on counter-force bar 1, be carved with the corner scale, counter-force bar 1 is motionless when pretension is operated, and rocking bar 3 drives sleeve arrangement 4 rotations, and is fricton-tight each other, can read the angle that rocking bar rotates by pointer 2, this angle is exactly the angle of sleeve rotating nut, so in the pretension process, can directly read the nut corner and read screw-down torque indirectly by Pressure gauge 13, nut corner and the screw-down torque required with pretension compare, and check with accurate pre-load nut mutually.Square hole on the ratchet Drive ratchet on the rocking bar 3 and the square shaft cunning on the sleeve are joined, and drive the sleeve rotation with fastening nut.

Among Fig. 2, on sleeve 27 upper end square shaft, be screwed a light and handy anti-explosion cover 24, cover ratchet 30, spring 25, make it not injure the person and equipment because implosion and fatigue are blocked fragment when bursting apart at ratchet.

Among Fig. 3, the outer rim of the ratchet Drive ratchet 30 on the rocking bar 3 makes that hexagon, square or spline shape and sleeve 31 are sliding joins drive socket.

Fig. 4 middle sleeve 33 upper ends are shaped on ratchet, and rocking bar 3 is by ratchet drive socket 33, and sleeve 33 links to each other with axle 22, axle 22 and

rocking bar

3,1 sliding joining of counter-force bar.

Among Fig. 5, sleeve 36 upper ends are shaped on ratchet, and rocking bar 3 is by ratchet drive socket 36, and a

sleeve

36 and 34 sliding joining of axle, axle 34 link to each other with rocking bar 3, counter-force bar 1.

Among Fig. 6, band profile of tooth endoporus is made on sleeve 39 tops, and rocking bar 3 is by profile of tooth outer rim drive socket, and axle 37 links to each other with rocking bar 3, counter-force bar 1.Above-mentioned profile of tooth can be made into spline tooth, involute teeth, first curved tooth etc.

Among Fig. 7, band profile of tooth endoporus is made on sleeve 39 tops, and rocking bar 3 is made profile of tooth by the profile of tooth outer rim, and rocking bar 3 is by profile of tooth endoporus transmission transmission body 41, and driving member 41 can be made into spline shape, involute teeth, first curved tooth etc. by endoporus profile of tooth drive socket 42 above-mentioned profiles of tooth.

Claims

1. open hydraulic spanner that is used for the nut dismounting, comprise counter-force bar (1), rocking bar (3), sleeve arrangement (4), oil cylinder (5), oil path block (6), high-voltage quick joint (7), low pressure snap joint (8), bearing pin (9), high-pressure hose (10), low-pressure hose (11), splicing sleeve (12), Pressure gauge (13), reversal valve (14) is electronic or manual, electronic or hand high-pressure oil pump (15), it is characterized in that being provided with automatic relief arrangement in the oil cylinder (5): oil cylinder (5) inner piston rod (16) is made hollow, stroke measurment bar (19) is housed in piston rod (16), (20), check valve (18), (21), when piston moves to range, hydraulic oil is through check valve (21), passage oil sump tank (5) off-load of measuring stick (20), when piston rod movement arrived zero-bit, hydraulic oil was through check valve (18), passage oil sump tank (5) off-load of measuring stick (19).

2. open hydraulic spanner according to claim 1 is characterized in that: pointer (2) is housed on rocking bar (3), is carved with the corner scale on the counter-force bar.

3. open hydraulic spanner according to claim 1 and 2 is characterized in that sleeve arrangement (4) has six kinds of different structure forms:

(1). on the square shaft of sleeve (27) upper end, fix an anti-explosion cover (24), cover square hole ratchet (26), spring (25) with screw (23);

(2). rocking bar (3) is by ratchet Drive ratchet (30), the outer rim shape face of ratchet (30) and the interior hole shape face of sleeve (31) sliding fit, be provided with a cover (43) outside the sleeve (31) and cover sleeve (31), the interior hole shape face of sleeve (31) can be made into hexagon, square or spline shape;

(3). be shaped on ratchet on the sleeve (33), rocking bar (3) is by ratchet drive socket (33), and sleeve (33) links to each other with axle (22), and axle (22) is slided with rocking bar (3), counter-force bar (1) and joined;

(4). sleeve (36) upper end is shaped on ratchet, and rocking bar (3) is by ratchet drive socket (36), and sleeve (36) is joined with axle (34) is sliding, and axle (34) links to each other with rocking bar (3) counter-force bar (1), with spring volume (35) location;

(5). sleeve (39) top is shaped on band profile of tooth endoporus, joins with the profile of tooth outer rim cunning on the rocking bar (3), and axle (37) links to each other with rocking bar (3), counter-force bar (1), and with spring volume (38) location, profile of tooth can be made into spline shape, involute teeth, first curved tooth;

(6). sleeve (42) outer rim is made the profile of tooth endoporus cunning of profile of tooth and driving member (41) and is joined, and driving member (41) outer rim is made the profile of tooth endoporus engagement of profile of tooth and rocking bar (3), and profile of tooth can be made into spline shape, involute teeth, garden curved tooth.

4. open hydraulic spanner according to claim 3 is characterized in that: ratchet on the rocking bar (3) and profile of tooth outer rim can be made into single face ratchet and profile of tooth outer rim.