CN103737524A - Hydraulic wrench - Google Patents

Hydraulic wrench Download PDF

Info

Publication number
CN103737524A
CN103737524A CN201310707686.3A CN201310707686A CN103737524A CN 103737524 A CN103737524 A CN 103737524A CN 201310707686 A CN201310707686 A CN 201310707686A CN 103737524 A CN103737524 A CN 103737524A
Authority
CN
China
Prior art keywords
hydraulic
handle
jaw
piston
bolt
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CN201310707686.3A
Other languages
Chinese (zh)
Other versions
CN103737524B (en
Inventor
李双超
朱伯涛
马振宏
关德华
王献锐
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
XINGTAI POWER SUPPLY BRANCH OF STATE GRID HEBEI ELECTRIC POWER Co
State Grid Corp of China SGCC
State Grid Hebei Electric Power Co Ltd
Original Assignee
XINGTAI POWER SUPPLY BRANCH OF STATE GRID HEBEI ELECTRIC POWER Co
State Grid Corp of China SGCC
State Grid Hebei Electric Power Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by XINGTAI POWER SUPPLY BRANCH OF STATE GRID HEBEI ELECTRIC POWER Co, State Grid Corp of China SGCC, State Grid Hebei Electric Power Co Ltd filed Critical XINGTAI POWER SUPPLY BRANCH OF STATE GRID HEBEI ELECTRIC POWER Co
Priority to CN201310707686.3A priority Critical patent/CN103737524B/en
Publication of CN103737524A publication Critical patent/CN103737524A/en
Application granted granted Critical
Publication of CN103737524B publication Critical patent/CN103737524B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B25HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25BTOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B21/00Portable power-driven screw or nut setting or loosening tools; Attachments for drilling apparatus serving the same purpose

Abstract

The invention discloses a hydraulic wrench, and relates to the technical field of bolt secondary disassembling tools. The hydraulic wrench comprises a wrench body and a handle, wherein the wrench body comprises a jaw, a body, a sliding rod piston and a pressing handle, a hydraulic cylinder is arranged inside the body, a piston is arranged inside a hydraulic cylinder high-oil-pressure area, a hydraulic cylinder low-oil pressure area is provided with a hydraulic valve, the outlet end of the hydraulic valve is communicated with the high-oil-pressure area, the hydraulic valve is connected with the sliding rod piston, the pressing handle is hinged to the body and the sliding rod piston, a movable jaw which can slide inside a jaw groove is fixed to the piston, and the body is provided with a decompression valve communicated with the high-oil-pressure area. By pressing the pressing handle, the hydraulic valve is matched with the sliding rod piston to enable oil pressure of the high-oil-pressure area to rise, a nut or a bolt can be clamped by driving the piston, decompression is achieved by lifting the pressing handle after disassembly, the jaw is loosed, and the bolt which can not be disassembled through a common wrench and is rusted seriously can be rapidly disassembled only by appropriate torque. The hydraulic wrench has the advantages of being simple in structure and convenient to use, and can reduce labor intensity of an operator and improve work efficiency.

Description

Hydraulic spanner
Technical field
The present invention relates to bolt pair extracting tool technical field.
Background technology
At present, when known overhaul of the equipments, often run into that to be arranged on position narrow and coordinate the few position of surplus, because nut corrosion is serious, and the space that does not have the instruments such as hammer or spanner to launch, these nuts cannot be dismantled, to maintenance work, make troubles.In the equipment rebuilding of Er power supply enterprise, technology innovation project, often need to disconnect once lead-in wire and equipment Disintegration overhaul, because nut corrosion is serious, lose corner angle and rounded, common wrench exists can not snap in the minimum phenomenon of angle that nut maybe can rotate, and due to screw-thread rust, common wrench can not turn the nut of corrosion, bolt at all.Traditional method often with hacksaw, flat chisel is sawed-off or cut off screw, then perforate again, screw tap hitch, also will be used gas cutting to cut open when serious.Not only waste time and energy, sometimes because of bolt corrosion seriously too difficulty tear open, time and effort consuming, also can incur loss through delay the duration.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of simple in structure, easy to use and reliable, hydraulic spanner that can reduce labor intensity of operating staff, increase work efficiency.
For solving the problems of the technologies described above, the technical solution used in the present invention is:
A kind of hydraulic spanner, comprise wrench body and handle with jaw, described handle is fixed on wrench body afterbody, described wrench body comprises jaw, body, slide bar piston and pressure handle, in described body, be provided with hydraulic cylinder, described pressure handle one end and body are hinged, described slide bar piston is vertically through body sidewall, the exposed junction of described slide bar piston and pressure handle middle part are hinged, described jaw and body are integral type, described jaw front end is circular arc, described jaw comprises fixed nip and movable clamp port, in described jaw, be provided with groove, the movable clamp port that can slide in groove is fixedly connected with piston one end, the tail end of described body is provided with oil fuel tube, in described hydraulic cylinder, be provided with low oil pressure district He Gao oil pressure district, described low oil pressure is provided with hydraulic valve in district, is provided with the second check valve in hydraulic valve, and described the second check valve port of export Yu Gao oil pressure district is communicated with, and the other end is communicated with the cylinder chamber of slide bar piston lower end, in described hydraulic valve, be also provided with the first check valve, the entrance of the first check valve is communicated with low oil pressure district, and the outlet of the first check valve is communicated with the cylinder chamber of slide bar piston lower end, described body outer wall is provided with relief valve, and described relief valve is communicated with the low oil pressure district of hydraulic cylinder, high oil pressure district.
Preferably, the working face of described fixed nip and movable clamp port is equipped with arc wear-resistant block, and described arc wear-resistant block inner side is provided with teeth groove.
Preferably, the working face of described arc wear-resistant block and fixed nip and movable clamp port is all bolted.
Preferably, the free end of described piston is provided with annular boss, on described annular boss, is fixed with spring.
Preferably, described body is provided with rotating shaft, and described pressure handle end and rotating shaft are hinged.
Preferably, described body is provided with connecting bolt, and described connecting bolt middle part is provided with through hole, and described slide bar piston is arranged in the through hole of connecting bolt, between described slide bar piston and the through hole of connecting bolt, is provided with rubber sealing boot.
Preferably, described hydraulic cylinder is equipped with sealing ring with the end face that contacts of body.
Preferably, described handle is hollow form, and described handle tail end is provided with end cap, described end cap with handle for being threaded.
The beneficial effect that adopts technique scheme to produce is: by lifting slide bar piston, the first one-way valve opens, hydraulic oil enters in the cylinder chamber of hydraulic valve, utilize lever principle to press pressure handle, the second one-way valve opens, hydraulic oil in hydraulic valve cylinder chamber is pressed into high oil pressure district, hydraulic oil driven plunger, and then drive movable clamp port that nut or nuts are clamped, after dismounting, open again relief valve and carry out pressure release, driven plunger is returned under the effect of spring, jaw can unclamp, the bolt or the nut that by changing jaw size, adapt to different size, arc wear-resistant block increases through Quenching Treatment hardness, wearability is better, bolted arc wear-resistant block is more convenient for changing, increase the service life, the arc wear-resistant block clamping nut or the nuts that are provided with teeth groove are firm, non-slip, for common wrench, cannot dismantle, remove the bolt of serious corrosion and privileged sites, only by suitable moment, can become flexible fast nut, nut or the bolt of removing corrosion are quick, efficiently.That the present invention has advantages of is simple in structure, reasonable in design, durable, easy to use and reliable, flexible, applied range, long service life, can reduce operating personnel's labour intensity, increases work efficiency.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention;
Fig. 2 is the top view of Fig. 1;
Fig. 3 is the operation principle schematic diagram of Fig. 1;
In figure: 1-wrench body, 2-handle, 3-jaw, 4-body, 5-slide bar piston, 6-pressure handle, 7-hydraulic cylinder, 8-piston, 9-oil fuel tube, 10-end cap, 11-hydraulic valve, 12-relief valve, 13-spring, 14-rotating shaft, 15-connecting bolt, 16-sealing ring, 31-fixed nip, 32-movable clamp port, 33-arc wear-resistant block, 34-teeth groove, 35-bolt, 71-low oil pressure district, 72-Gao oil pressure district, 81-boss, 17-the first check valve, 18-the second check valve.
The specific embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is further detailed explanation.
As Fig. 1, a kind of hydraulic spanner shown in 2, comprise wrench body 1 and handle 2 with jaw, described handle 2 is fixed on wrench body 1 afterbody, described wrench body 1 comprises jaw 3, body 4, slide bar piston 5 and pressure handle 6, in described body 4, be provided with hydraulic cylinder 7, described pressure handle 6 one end and body 4 are hinged, described slide bar piston 5 is vertically through hydraulic cylinder 7 and body 4 sidewalls, the exposed junction of described slide bar piston 5 and pressure handle 6 middle parts are hinged, described jaw 3 is integral type with body 4, described jaw 3 front ends are circular arc, described jaw 3 comprises fixed nip 31 and movable clamp port 32, in described jaw 3, be provided with groove, the movable clamp port 32 that can slide in groove is fixedly connected with piston 8 one end, the tail end of described body 4 is provided with oil fuel tube 9, and it is stifled that described oil fuel tube 9 ends are provided with oil, in described hydraulic cylinder, be provided with low oil pressure district 71He Gao oil pressure district 72, in described low oil pressure district 71, be provided with hydraulic valve 11, in hydraulic valve 11, be provided with the second check valve 18, described the second check valve 18 port of export Yu Gao oil pressure districts 72 are communicated with, and the other end is communicated with the cylinder chamber of slide bar piston 5 lower ends, the entrance that is also provided with the first check valve 17, the first check valves 17 in described hydraulic valve 11 is communicated with low oil pressure district 71, and the outlet of the first check valve 17 is communicated with the cylinder chamber of slide bar piston 5 lower ends, described body 4 outer walls are provided with relief valve 12, and described relief valve 12Jiang Gao oil pressure district 72Yu low oil pressure district 71 is communicated with.
As a kind of preferred structure, the other end of described piston 8 is provided with annular boss 81, on the annular boss 81 of described piston 8, be fixed with spring 13, remove the hydraulic oil that can open in relief valve 12Dui Gao oil pressure district 72 after nut and carry out pressure release, under the effect of spring 13, make piston 8 return, realize unclamping of jaw 3 simultaneously; The working face of described fixed nip 31 and movable clamp port 32 is equipped with arc wear-resistant block 33, described arc wear-resistant block 33 inner sides are provided with teeth groove 34, and arc wear-resistant block 33 is carried out to Quenching Treatment, add strong hardness, increase its wearability, the teeth groove 34 of processing is binding nut or nuts more firmly; Described body 4 is provided with rotating shaft 14, and described pressure handle 6 ends and rotating shaft 14 are hinged, and pressure handle 6 can 14 be rotated around the shaft, utilizes lever principle that slide bar piston 5 is pressed down, and drives hydraulic valve 11 actions.
As a kind of preferred structure, described hydraulic cylinder 7 cylinder bodies and body 4 are provided with connecting bolt 15, described connecting bolt 15 middle parts are provided with through hole, described slide bar piston 5 is arranged in the through hole of connecting bolt 15, between described slide bar piston 5 and the through hole of connecting bolt 15, be provided with rubber sealing boot, by rubber sealing boot, can prevent that hydraulic oil from leaking outside, improve sealing; Described arc wear-resistant block 33 is all connected by bolt 35 with the working face of fixed nip 31 and movable clamp port 32, long-time use, arc wear-resistant block 33 will serious wear, hinged bolt 35 is changed, with the service life of extension device, also can adapt to by changing the size of arc wear-resistant block 33 nut or the bolt of different size simultaneously.
As a kind of preferred structure, described hydraulic cylinder 7 is equipped with sealing ring 16 with the end face that contacts of body 4, can guarantee that the sealing of hydraulic cylinder 7 is good; Described handle 2 is hollow form, and described handle 2 tail ends are provided with end cap 10, and described end cap 10 is with handle 2 for being threaded, and the oil fuel tube 9 of hydraulic cylinder 7 is arranged in handle 2, opens end cap 10 during repairing, and end of operation is tightened end cap 10.
As shown in Figure 3, by lifting slide bar piston 5, the first check valves 17, open, hydraulic oil enters in the cylinder chamber of hydraulic valve 11, utilize lever principle to press pressure handle 6, the second check valve 18 is opened, and the hydraulic oil in hydraulic valve 11 cylinder chamber is pressed into high oil pressure district 72, hydraulic oil driven plunger 8, and then drive movable clamp port 32 that nut or nuts are clamped, after dismounting, open relief valve 12 again and carry out pressure release, driven plunger 8 is returned under the effect of spring 13, and jaw 3 can unclamp, front end is nut or the bolt in the more convenient operation small space of the jaw 3 of circular arc, the bolt or the nut that by changing arc wear-resistant block 33, adapt to different size, arc wear-resistant block 33 increases through Quenching Treatment hardness, wearability is better, bolted arc wear-resistant block 33 is more convenient for changing, increase the service life, the arc wear-resistant block clamping nut or the nuts that are provided with teeth groove 34 are firm, non-slip, for common wrench, cannot dismantle, remove the bolt of serious corrosion and privileged sites, only by suitable moment, can become flexible fast nut, nut or the bolt of removing corrosion are quick, efficiently.
In sum, that the present invention has advantages of is simple in structure, reasonable in design, durable, flexible, applied range, long service life, can reduce operating personnel's labour intensity, increases work efficiency.Utilize the present invention to use in scene in equipment rebuilding, technological transformation, working time has shortened 30% left and right, especially in equipment rebuilding process, run in the time of need to disintegrating, implanted bolt is difficult to dismounting because nut corrosion loses corner angle, but can not carry out destructiveness, remove, the present invention can solve this type of difficult problem effectively.

Claims (8)

1. a hydraulic spanner, comprise wrench body (1) and handle (2) with jaw, described handle (2) is fixed on wrench body (1) afterbody, it is characterized in that: described wrench body (1) comprises jaw (3), body (4), slide bar piston (5) and pressure handle (6), in described body (4), be provided with hydraulic cylinder (7), described pressure handle (6) one end and body (4) are hinged, described slide bar piston (5) is vertically through body (4) sidewall, the exposed junction of described slide bar piston (5) and pressure handle (6) middle part are hinged, described jaw (3) is integral type with body (4), described jaw (3) front end is circular arc, described jaw (3) comprises fixed nip (31) and movable clamp port (32), described jaw is provided with groove in (3), the movable clamp port that can slide in groove (32) is fixedly connected with piston (8) one end, the tail end of described body (4) is provided with oil fuel tube (9), in described hydraulic cylinder, be provided with He Gao oil pressure district, low oil pressure district (71) (72), in described low oil pressure district (71), be provided with hydraulic valve (11), in hydraulic valve (11), be provided with the second check valve (18), described the second check valve (18) port of export Yu Gao oil pressure district (72) is communicated with, and the other end is communicated with the cylinder chamber of slide bar piston (5) lower end, in described hydraulic valve (11), be also provided with the first check valve (17), the entrance of the first check valve (17) is communicated with low oil pressure district (71), and the outlet of the first check valve (17) is communicated with the cylinder chamber of slide bar piston (5) lower end, described body (4) outer wall is provided with relief valve (12), and described relief valve (12) is communicated with the high oil pressure district (72) of hydraulic cylinder (7).
2. hydraulic spanner according to claim 1, is characterized in that: the working face of described fixed nip (31) and movable clamp port (32) is equipped with arc wear-resistant block (33), and described arc wear-resistant block (33) inner side is provided with teeth groove (34).
3. hydraulic spanner according to claim 2, is characterized in that: described arc wear-resistant block (33) is all connected by bolt (35) with the working face of fixed nip (31) and movable clamp port (32).
4. hydraulic spanner according to claim 1, is characterized in that: the free end of described piston (8) is provided with annular boss (81), is fixed with spring (13) on described annular boss (81).
5. hydraulic spanner according to claim 1, is characterized in that: described body (4) is provided with rotating shaft (14), and described pressure handle (6) end and rotating shaft (14) are hinged.
6. hydraulic spanner according to claim 1, it is characterized in that: described body (4) is provided with connecting bolt (15), described connecting bolt (15) middle part is provided with through hole, described slide bar piston (5) is arranged in the through hole of connecting bolt (15), between described slide bar piston (5) and the through hole of connecting bolt (15), is provided with rubber sealing boot.
7. hydraulic spanner according to claim 1, is characterized in that: described hydraulic cylinder (7) is equipped with sealing ring (16) with the end face that contacts of body (4).
8. hydraulic spanner according to claim 1, is characterized in that: described handle (2) is hollow form, and described handle (2) tail end is provided with end cap (10), described end cap (10) with handle (2) for being threaded.
CN201310707686.3A 2013-12-20 2013-12-20 Hydraulic spanner Active CN103737524B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201310707686.3A CN103737524B (en) 2013-12-20 2013-12-20 Hydraulic spanner

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201310707686.3A CN103737524B (en) 2013-12-20 2013-12-20 Hydraulic spanner

Publications (2)

Publication Number Publication Date
CN103737524A true CN103737524A (en) 2014-04-23
CN103737524B CN103737524B (en) 2015-10-21

Family

ID=50494626

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201310707686.3A Active CN103737524B (en) 2013-12-20 2013-12-20 Hydraulic spanner

Country Status (1)

Country Link
CN (1) CN103737524B (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107127702A (en) * 2017-05-17 2017-09-05 句容新禾五金电器有限公司 Telescopic stress application pipe vice
CN107971960A (en) * 2017-11-20 2018-05-01 陈壮壮 A kind of fluid pressure type spanner for narrow space
CN108161813A (en) * 2017-11-16 2018-06-15 安徽蒂森五金工具有限公司 A kind of hand-hydraulic screw spanner
CN108942758A (en) * 2018-08-14 2018-12-07 常州信息职业技术学院 Anti-shift spanner

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4206603A (en) * 1977-07-13 1980-06-10 Dan Mekler Single hand operated tool
GB8530647D0 (en) * 1984-12-13 1986-01-22 Weatherford Uk Ltd Rotating tubular member
CN86203740U (en) * 1986-06-08 1987-01-28 王琨 Automic hydraulic lever
CN202271305U (en) * 2011-10-28 2012-06-13 刘伟雄 Multifunctional wrench with hydraulic automatic locking device
CN103433883A (en) * 2013-09-10 2013-12-11 杜德机械科技(上海)有限公司 Open-type hydraulic torque wrench

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4206603A (en) * 1977-07-13 1980-06-10 Dan Mekler Single hand operated tool
GB8530647D0 (en) * 1984-12-13 1986-01-22 Weatherford Uk Ltd Rotating tubular member
GB2168281A (en) * 1984-12-13 1986-06-18 Weatherford Uk Limited Apparatus for rotating a tubular member
CN86203740U (en) * 1986-06-08 1987-01-28 王琨 Automic hydraulic lever
CN202271305U (en) * 2011-10-28 2012-06-13 刘伟雄 Multifunctional wrench with hydraulic automatic locking device
CN103433883A (en) * 2013-09-10 2013-12-11 杜德机械科技(上海)有限公司 Open-type hydraulic torque wrench

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107127702A (en) * 2017-05-17 2017-09-05 句容新禾五金电器有限公司 Telescopic stress application pipe vice
CN108161813A (en) * 2017-11-16 2018-06-15 安徽蒂森五金工具有限公司 A kind of hand-hydraulic screw spanner
CN107971960A (en) * 2017-11-20 2018-05-01 陈壮壮 A kind of fluid pressure type spanner for narrow space
CN107971960B (en) * 2017-11-20 2019-06-14 上海舜诺机械有限公司 A kind of fluid pressure type spanner for narrow space
CN108942758A (en) * 2018-08-14 2018-12-07 常州信息职业技术学院 Anti-shift spanner
CN108942758B (en) * 2018-08-14 2020-05-19 常州信息职业技术学院 Anti-skid wrench

Also Published As

Publication number Publication date
CN103737524B (en) 2015-10-21

Similar Documents

Publication Publication Date Title
CN103737524A (en) Hydraulic wrench
CN203752083U (en) Bearing pulling device
CN203009514U (en) Adjustable bolt capable of being quickly dismantled
CN204076165U (en) The special wrench for dismounting of high-pressure descaling nozzle
CN202377765U (en) Device for detaching hydraulic cylinder of blowout preventer
CN202639815U (en) Hydraulic tightening and detaching tool for crosshead nut
CN203197834U (en) Pin disassembling tool for pin coupler
CN202817464U (en) Hydraulic clamp
CN204108937U (en) Nylon pin dismounting coupling operation auxiliary implement
CN202045602U (en) Rusty bolt dismounting pincher
CN201824294U (en) Special wrench for maintenance of valve
CN104552149A (en) Single-stage thin-type bolt tensioner
CN204366393U (en) Single-stage high type bolt tensioning jack
CN205097118U (en) Hydraulic generator break pin instrument of choosing
CN204263068U (en) A kind of metallurgical machinery equipment dismounting tool for circular nut
CN204018626U (en) A kind of pneumatic hammer forging aid
CN204603741U (en) Ratchet-type tears packing column machine open
CN202412203U (en) Special tool for overhauling valve body of hydraulic mechanism of circuit breaker
CN103158106B (en) Special tool for breaker hydraulic mechanism valve body maintenance and using method of the same
CN202357104U (en) Hydraulic portable liquid cylinder flashboard shaft loading and unloading device for blowout preventer
CN206277338U (en) A kind of hydraulic nut splitter
CN203215049U (en) Wrench applied to hand-operated type rotating valve for reaction still
CN203305163U (en) Hexagonal screw loosening machine
CN205438397U (en) Convenient axle sleeve part extractor
CN210462398U (en) High-pressure oil gun

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
C14 Grant of patent or utility model
GR01 Patent grant