CN2541125Y - Light-weight hydraulic tongs - Google Patents
Light-weight hydraulic tongs Download PDFInfo
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- CN2541125Y CN2541125Y CN 02225775 CN02225775U CN2541125Y CN 2541125 Y CN2541125 Y CN 2541125Y CN 02225775 CN02225775 CN 02225775 CN 02225775 U CN02225775 U CN 02225775U CN 2541125 Y CN2541125 Y CN 2541125Y
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Abstract
The utility model discloses a pair of portable hydraulic tongs, comprising a clamp, draw-in gears, an oil sac, a load sleeve-and-unloading valve handle, a power handle and a combination body of a pump, a cylinder and a valve. The clamp inside which different draw-in gears are installed is connected to a piston end disposed in the axial direction of the combination of a pump, a cylinder and a valve via a nut and a snap ring. The oil sac is connected to an oil inlet end of the combination of a pump, a cylinder and a valve through an elastic ring and the external of the air sac is provided with an oil sac sleeve. The power handle is connected to the radial direction of the combination of a pump, a cylinder and a valve, and the position is between the clamp and the oil sac. The inner combination of a pump, a cylinder and a valve is provided with a piston, an oil-attacking plunger and a load-unloading valve core. The screw placed at the external end of the load-unloading valve core is sleeved with a valve core cover which covers the load-unloading valve handle. The rotation shaft of the load-unloading valve handle is inserted into a boss of the combination of a pump, a cylinder and the outer end of the oil-attacking plunger is provided a C-typed groove opening engaged with a rotation shaft sleeve of an oil-attacking piston of a clamping rod installed in the power handle. The hydraulic tongs has the advantages of compact structure, portability, small volume, and simple operation, the utility model is capable of being adaptable for the working of clamping, sealing and cutting tubes with different sizes and forms.
Description
Technical field
The utility model relates to a kind of light hydraulic tongs that is widely used in pipeline, the pressure connection of cable (line) card pressure/envelope or cuts off.
Background technology
At present, known hydraulic tongs is the structure heaviness often, operation inconvenience, and the scope of application is little.
Summary of the invention
The objective of the invention is to address the above problem, a kind of light hydraulic tongs is provided, light easy-to-use, applied widely.
The utility model realizes that the above-mentioned purpose scheme is: a kind of light hydraulic tongs, comprise clamp, dop, oil sac and cover, off-load valve handle and power handle, and it is characterized in that: also comprise the pumping cylinder valve assembly; Can in put different dops clamp be connected the piston end of pumping cylinder valve assembly axis direction by nut and snap ring, clamp can carry out revolution more than 360 degree around the axis of pumping cylinder valve assembly; Oil sac is connected to the oil inlet end of pumping cylinder valve assembly by elastic ring, and oil sac has the oil sac cover outward; The power handle is connected the radial direction of pumping cylinder valve assembly, and its position is between clamp and oil sac; Be integrated with piston in the pumping cylinder valve assembly, the plunger of buying oil, off-load spool, be with cartridge cover on the screw thread of off-load spool outer end, this cartridge cover covers the off-load valve handle that flat " S " type, an end have two pawls, and the rotating shaft of off-load valve handle is inserted in the boss of pumping cylinder valve assembly; There is the notch of " C " type the buy oil outer end of plunger, and the plug rotating shaft cover of buying oil on the clamp holder in this notch and the power handle matches.
The beneficial effects of the utility model are: the pumping cylinder valve is integrated, reduced the appearance and size and the weight of hydraulic tongs greatly; The power handle is compact with being connected of main body.Snap ring has been adopted in being connected of clamp and main body, and clamp can be turned round, replaceable dissimilar dop in the clamp, thus form is pressed or cut off to the multi-form card pressure/envelope that can realize different size.As seen its compact conformation is light small and exquisite, simple to operate, presses/cut off operation applicable to different size, multi-form pipeline, the card pressure/envelope of cable (line).
Description of drawings
Fig. 1 is overall construction drawing of the present utility model and each part assembling relationship figure.
Fig. 2 a, 2b, 2 are respectively that pumping cylinder valve assembly design of part B-B analyses and observe, a left side is looked and vertical view.
Piston structure figure buys oil during Fig. 3.
Fig. 4 is piston structure figure.
Fig. 5 a, 5b, 5c are that the outer wrench structure right side is looked respectively, front broken section and A be to enlarged drawing.
Fig. 6 a, 6b are respectively pincers hook structure front broken section and vertical view.
Fig. 7 a, 7b, 7c are respectively interior wrench structure front broken sections, A-A analyses and observe and vertical view.
Fig. 8 a, 8b, 8c, 8d are respectively that the handle structure master looks, B-B analyses and observe, a left side is looked and the A-A cutaway view.
Fig. 9 a, 9b, 9c are respectively that analyse and observe in clamp holder structure front, A-A analyses and observe and the C cutaway view.
Figure 10 is the oil sac structure chart.
Figure 11 a, 11b are respectively unloader handle structure front broken section and left view.
Figure 12 a, 12b are respectively that card pressure/envelope pressure form master looks and left view.
Figure 13 a, 13b cut off the form master to look and left view.
Figure 14 is nut structure figure.
Figure 15 is the spring stack structure chart.
The specific embodiment
In Fig. 1, this light hydraulic tongs is the center with pumping cylinder valve assembly 30, can in put different dops 47,50 clamp by make up tong 51, clamp 48 outward, pincers hook 49, rotating shaft 42, torsion spring 43 form an end (piston end) that is connected pumping cylinder valve assembly axis direction by nut 35 and snap ring 36, clamp can carry out the above revolution of 360 degree around the axis of pumping cylinder valve assembly, move in the dop in the clamp that dop 50 and quiet dop 47 are replaceable to become different forms; Oil sac 18 is connected to the other end (oil inlet end) of pumping cylinder valve assembly 30 by elastic ring 24, and oil sac has oil sac cover 17 outward, and the oil sac cover is by outside the port that is threaded in pumping cylinder valve assembly 30; The power handle (is made up of lever 8, clamp holder 4, spring stack, spring stack is made up of the big cover 7 of spring, the little cover 5 of spring, spring 6 again) be connected the radial direction of pumping cylinder valve assembly 30, its position is between clamp and oil sac, and the rotating shaft of off-load valve handle 1 is inserted in the boss of pumping cylinder valve assembly; Be integrated with piston 32 in the pumping cylinder valve assembly, the plunger 19 of buying oil, off-load spool 22.Be with cartridge cover 14 on the screw thread of off-load spool outer end, this cartridge cover covers the off-load valve handle that flat " S " type, an end have two pawls, and the rotating shaft of off-load valve handle is inserted in the boss of pumping cylinder valve assembly; There is the notch of " C " type the buy oil outer end of plunger, and the plug rotating shaft cover 11 of buying oil on the clamp holder in this notch and the power handle matches.Among Fig. 1, the part of other label representatives is as follows: 2, off-load handle spring; 15, unloader plug screw; 20, the plug black box of buying oil; 21, unloader spring; 23, unloader sealing ring; 29, big spring collar; 31, piston packing; 33, bead; 34, nut alignment pin; 39, spring shutoff; 44, spring shutoff.
In Fig. 2 a, 2b, 2c, be integrated with axial string hole such as coaxial macropore 301, mesopore 302, aperture 303 and unload oilhole along axis direction in the pumping cylinder valve assembly 30, the outlet termination oil sac 18 of the aperture 303 in the axial string hole, the port of export of macropore 301 connects plunger shaft 304; Piston is arranged in the plunger shaft; Aperture and mesopore transition position are taper holes, roundlet ball 25 is arranged in the taper hole, the mesopore direction of little ball has little spring 26, the opposite side of little spring has big ball, big ball is in the taper hole of mesopore and macropore transition position, the macropore direction of big ball 27 has big spring 28, and the other end of big spring is kept off in macropore by centre porose plug or snap ring; Mesopore and macropore transition position are taper holes, and (cylinder) hole 305 of radially buying oil at the mesopore place in axial string hole in the pumping cylinder valve assembly communicates with mesopore, the plunger of buying oil in this hole, and there is the axis hole of " C " type the outer end of the plunger of buying oil; Macropore place in axial string hole has oil drain valve's (cylinder) hole 306 to communicate with macropore, and the off-load spool is arranged in this hole, and there is screw thread the spool outer end, is with spring on it; The axis of off-load spool is parallel with the axis in the hole of buying oil or become 30 degree, 45 degree, 90 to spend angles; There is aperture (spill port) the emptying valve opening to be connected the oil-in end of pumping cylinder valve assembly; The outer wall of the piston end of pumping cylinder valve assembly has the screw thread 313 that connects usefulness, and the root of this screw thread has the ring groove in week, the ring week groove 308 that the outer wall of oil-in end has the connection oil sac to use, and the cylindrical outer surface on groove next door has the screw thread 312 that connects the oil sac cover; The outer wall of pumping cylinder valve assembly has the location, rectangle locating slot 307 and screw hole 309 that the power handle is used is installed, and the boss 310 that can penetrate the rotating shaft of off-load valve handle is arranged, and unloader delthyrium 311 is arranged on the boss.Bead and big ball and axial string hole constitute two check valves, when the plunger of buying oil axially outside when mobile along it, make the fluid can only be in aperture is inhaled into mesopore from oil sac, when buying oil plunger when its axis moves inward, the fluid in the mesopore is pressed in the macropore, enters plunger shaft again, piston in the plunger shaft is under the promotion of fluid, will be vertically outwards motion, and then promote moving dop and move to quiet dop direction, make two dop interlocks.
In Fig. 3, there is " C " profile shaft hole 191 in the short portion of the plunger 19 of buying oil.
In Fig. 4, be with spring 37 on the piston rod 38, the axial direction of the end of piston rod has axial aperture, the radial direction of aperture has the location bead to protrude in it, there is axial hole 321 end of the bar of piston 32, the location bead 41 that protrudes into is arranged in it, and the part that protrudes into of this location bead matches with ring groove on the reference column that inserts the moving dop in the piston-rod end axial hole.The behind of bead is pressed with spring 40.
In Fig. 5 a, 5b, 5c, clamp are formed by making up tong, clamp, clamp hook, rotating shaft and spring outward, it is characterized in that: clamp and clamp hook outward and be connected in two pawls that make up tong by rotating shaft, be with torsion spring in the rotating shaft, torsion spring makes outer pincers around the shaft to the pincers inner rotary, makes the rotation in pincers around the shaft of pincers hook; Outer pincers 48 are " L " type, there is the step 481 of projection in the outer pincers latter end outside, there is gathering sill 482 two inboards, cylindrical hole 483 with pumping cylinder valve assembly axis coaxle is arranged on the outer pincers tong arm, in this hole radially direction have roundlet ball 46 parts to protrude into, this ball protrudes into that the ring groove on the reference column matches on part and the dop, this bead protrude into part behind symmetric position be pressed with compression spring 45.
In Fig. 6 a, 6b, pincers hook 49 is " one " font, and is inboard fluted 491, and the groove 491 of similar shape fastens on the step 481 that outer pincers are gone up projection when closing pincers and the pincers hook.
In Fig. 7 a, 7b, 7c, making up tong 51 is " Y " type, and an end is cylindrical, and this end outer surface has annular recess 511, and inner surface is a cylindrical hole 512, and there is gathering sill 513 two inboards of making up tong, collude two pawls 514 that junction has cylindrical hole with outer pincers and pincers.
Dynamic and static two dops are arranged in the clamp; There is cylindrical reference column the outer end of two dops, and the periphery of reference column has the groove of ring-type; There is guide ledges in two outsides of dynamic and static two dops, and the gathering sill of this guide ledges and inside and outside pincers two inboards matches; In the axial cylindrical bore on the outer tong arm of reference column insertion of quiet dop, in the axial cylindrical bore of the end of the bar of the reference column insertion piston of moving dop.
The power handle of hydraulic tongs is hand or electrodynamic type or other modes.
Hand power handle is made up of lever, clamp holder, spring stack, clamp holder rotating shaft (12) and cover (13), clamp holder gear shaft (9), buy oil plug rotating shaft (10) and cover, connecting axle (3), it is characterized in that: the clamp holder rotating shaft is connected clamp holder with lever, clamp holder and lever are certain included angle, can rotate in opposite directions around the clamp holder rotating shaft; Spring stack is clipped between the spring base of clamp holder and lever, makes both sides' angle be the change main trend, and the clamp holder gear shaft blocks the rotation of clamp holder, and the maximum angle between clamp holder and the lever is fixed.
In Fig. 8 a, 8b, 8c, 8d, the lever section is " U " type, and there is inside positioning boss 81 its both sides, end, and this boss 81 matches with the locating slot 307 of pumping cylinder valve assembly outer wall, and one or two or three or more screw holes 82 are arranged around the boss.Screw in boss and the screw hole is located lever, be fixed on its pumping cylinder valve assembly together; Connect the spring base 86 that clamp holder shaft hole 83, connecting axle shaft hole 84, clamp holder gear shaft hole 85 and the mounting spring post of usefulness are used on the lever in addition.
In Fig. 9 a, 9b, 9c, clamp holder 4 sections are " U " type, and an end has the clamp holder shaft hole and the plug shaft hole of buying oil; Clamp holder rotating shaft cover 403 is a ladder cylinder axis type, one end is a small column, one end is a big column, the centre is coaxial cylindrical hole, and clamp holder rotating shaft cover 404 is enclosed within the clamp holder rotating shaft, and the plunger rotating shaft cover of buying oil is enclosed within the plunger rotating shaft of buying oil, the plunger rotating shaft of buying oil is filled in buying oil on the clamp holder and is filled in the shaft hole, clamp holder rotating shaft cover small column end plug is gone in the clamp holder shaft hole on the clamp holder, and the big column end cap is firmly filled in the buying oil plug rotating shaft end face in the plug shaft hole of buying oil on the clamp holder, making the plug rotating shaft of buying oil not have axially-movable; The spring base 405 that also has the mounting spring post to use on the clamp holder.
Oil sac 18 usefulness elastic rings of the present utility model are connected on the pumping cylinder valve assembly, and simultaneously the other end of oil sac has the cylindrical hole that is plugged with stopper, and during oiling, as long as stopper is backed out, oil sac was avoided colliding when the outer cover of oil sac made work in oil sac.In Figure 10, oil sac 18 is cylinder type, and the outer surface of oil sac one end has the groove 181 of ring-type, inner surface that inside ring week boss 182 is arranged; The other end of oil sac is a cylinder, in coaxial cylindrical aperture is arranged, be plugged with columniform stopper 16 in the cylindrical aperture.
In Figure 11 a, 11b, off-load valve handle 1 is flat " S " type, an end has two pawls, and the shaft hole 101 of wearing axle is wherein arranged.
For the ease of use that improves hydraulic tongs and the broadness of scope, the utility model is designed to the form that clamp surround dop with gripping part, and dop wherein can press according to different card pressure/envelopes/and the form of cutting off changes.
What Figure 12 a, 12b were represented is that interior moving dop 50 inner chambers of clamp and quiet dop 47 inner chambers surround a card pressure/envelope pressure form altogether, and it is characterized in that: this form is the hole of cylinder (ellipse) shape; Have in the ring week in hole the groove 501 of ring-type or boss 502 or in connect regular polygon 503, in the hole or one is arranged, or have its two, or have its three or more or do not have, the interlock by dynamic and static dop makes pipeline, cable (line) 100 are pressed into different forms by card pressure/envelopes.
Figure 13 is represented is that moving dop inner chamber in the clamp and quiet dop inner chamber surround one altogether and cut off form, and the cutting edge 504 of dynamic and static two dops is cut off pipe, cable (line) 100 in the interlock of two dops.
In Figure 14, the outer wall that connects the nut 35 of clamp and pumping cylinder valve assembly has axial small boss 351, one end of nut is a small cylindrical opening 352, the other end is big column hole 353, have small column to protrude in the big column hole in radial hole along the radial direction of nut, this cylinder protrudes into part and matches with the groove of pumping cylinder valve assembly outer wall thread root.
In Figure 15, spring stack is made up of the little cover 5 of spring, the big cover 7 of spring, spring 6, and an end plug of spring is gone in the little cover of spring, and the other end is filled in the big cover of spring, and the big cover of spring is enclosed within outside the little cover of spring; The little cover of spring inside is cylindrical hole, can fill in spring in it, and an end that stretches in the big cover of spring has outside ring week boss 511, and the other end is a cone 512; The big cover of spring inside is cylindrical hole, fills in the little cover of spring and spring, and an end that entangles the little cover of spring has the ring week boss 711 of indent, and the other end is a cone 712.
As long as one hand is held and put clamp holder and lever, can make the plunger of buying oil during work, fluid is drawn into the plunger shaft in oil sac go along its axially reciprocating.
The utility model integrates the pumping cylinder valve, has reduced the appearance and size and the weight of hydraulic tongs greatly; The power handle adopts unique lever principle, and the handle section adopts " U " form, has both alleviated weight, has guaranteed rigidity again, and is simultaneously compact with being connected of main body.Nut and snap ring have been adopted in being connected of clamp and main body, make clamp can carry out the revolution of 360 degree, replaceable dissimilar dop in the clamp, thus form is pressed or cut off to the multi-form card pressure/envelope that can realize different size.
Moving dop moving in clamp because the guide ledges at dop two ends can exactly with the cooperating of gathering sill of inside and outside pincers two inboards, make card pressure/envelope press/cut off form attractive in appearance, stablize.By the thrust that the crush of the spring on the unloader spool of regulating sleeve in the pumping cylinder valve assembly can be transferred (establishing) fixed piston in advance, can when finishing, work carry out off-load again.Its principle is: (reach and set thrust) when work is finished, the fluid in the plunger shaft outwards boosts the off-load spool through macropore, flow in the oil sac through spill port again, and the pressure of the fluid in the plunger shaft will no longer raise at this moment, and the thrust of piston will no longer increase; In the course of the work, as long as scratch moving off-load valve handle, the off-load spool is outwards mentioned, the spring in the plunger shaft on the piston rod will promote piston makes the fluid in the plunger shaft flow in the oil sac through macropore, emptying valve opening, spill port, and two dops are unclamped.
Claims (10)
1. a light hydraulic tongs comprises clamp, dop, oil sac and cover, off-load valve handle and power handle, it is characterized in that: also comprise the pumping cylinder valve assembly; Can in put different dops clamp be connected the piston end of pumping cylinder valve assembly axis direction by nut and snap ring, clamp can carry out revolution more than 360 degree around the axis of pumping cylinder valve assembly; Oil sac is connected to the oil inlet end of pumping cylinder valve assembly by elastic ring, and oil sac has the oil sac cover outward; The power handle is connected the radial direction of pumping cylinder valve assembly, and its position is between clamp and oil sac; Be integrated with piston in the pumping cylinder valve assembly, the plunger of buying oil, off-load spool, be with cartridge cover on the screw thread of off-load spool outer end, this cartridge cover covers the off-load valve handle that flat " S " type, an end have two pawls, and the rotating shaft of off-load valve handle is inserted in the boss of pumping cylinder valve assembly; There is the notch of " C " type the buy oil outer end of plunger, and the plug rotating shaft cover of buying oil on the clamp holder in this notch and the power handle matches.
2. hydraulic tongs according to claim 1 is characterized in that: along axis direction coaxial large, medium and small a string hole is arranged in the pumping cylinder valve assembly, and the outlet termination oil sac of aperture, the port of export of macropore connects plunger shaft, and piston is arranged in the plunger shaft; Aperture and mesopore transition position are taper holes, little ball is arranged in the taper hole, the mesopore direction of little ball has little spring, the opposite side of little spring has big ball, big ball is in the taper hole of mesopore and macropore transition position, the macropore direction of big ball has big spring, and the other end of big spring is kept off in macropore by centre porose plug or snap ring; The hole of radially buying oil at the axial mesopore place in string hole in the pumping cylinder valve assembly communicates with mesopore, the plunger of buying oil in this hole, and there is " C " the axis hole of type the outer end of the plunger of buying oil; Macropore place in axial string hole has the emptying valve opening to communicate with macropore, and the off-load spool is arranged in this hole, and there is screw thread the spool outer end, is with spring on it; The axis of off-load spool is parallel with the axis of the plunger of buying oil or become 30 degree, 45 degree, 90 to spend angles; There is aperture the emptying valve opening to be connected the oil-in end of pumping cylinder valve assembly; The screw thread that the outer wall of the piston end of pumping cylinder valve assembly has the connection clamp to use, the root of this screw thread have the ring groove in week, the ring week groove that the outer wall of oil-in end has the connection oil sac to use, and the cylindrical outer surface by the groove has the screw thread that connects the oil sac cover; The outer wall of pumping cylinder valve assembly has the location, rectangle locating slot and screw hole that the power handle is used is installed, and the boss that can penetrate the rotating shaft of off-load valve handle is arranged.
3. hydraulic tongs according to claim 2, it is characterized in that: upper cover of piston rod has spring, the axial direction of the end of piston rod has axial aperture, the radial direction of aperture has the location bead to protrude in it, and the ring groove on the reference column that protrudes into the moving dop in part and the insertion piston-rod end axial hole of this location bead matches.
4. hydraulic tongs according to claim 1, its clamp are formed by making up tong, clamp, clamp hook, rotating shaft and spring outward, it is characterized in that: clamp and clamp hook outward and be connected in two pawls that make up tong by rotating shaft, be with torsion spring in the rotating shaft, torsion spring makes outer pincers around the shaft to the pincers inner rotary, makes the rotation in pincers around the shaft of pincers hook; Outer pincers are " L " type, there is the step of projection in the outer pincers latter end outside, there is gathering sill two inboards, cylindrical hole with pumping cylinder valve assembly axis coaxle is arranged on the outer pincers tong arm, in this hole radially direction have the roundlet ball portion to protrude into, this ball protrudes into that the ring groove on the reference column matches on part and the dop, this bead protrude into part behind symmetric position be pressed with the compression spring; Making up tong is " Y " type, and an end is cylindrical, and this end outer surface has annular recess, and inner surface is a cylindrical hole, and there is gathering sill two inboards of making up tong; The pincers hook is " one " font, and is inboard fluted, clamps the step of going up projection and the groove fastening that clamps similar shape on the hook when closing pincers outward.
5. hydraulic tongs according to claim 1 is characterized in that: dynamic and static two dops are arranged in the clamp; There is cylindrical reference column the outer end of two dops, and the periphery of reference column has the groove of ring-type; There is guide ledges in two outsides of dynamic and static two dops, and the gathering sill of this guide ledges and inside and outside pincers two inboards matches; In the axial cylindrical bore on the outer tong arm of reference column insertion of quiet dop, in the axial cylindrical bore of the end of the bar of the reference column insertion piston of moving dop.
6. moving dop inner chamber in the hydraulic tongs according to claim 1, clamp and quiet dop inner chamber surround a card pressure/envelope altogether and press/cut off form, it is characterized in that: this form is the closed cutting edge or the hole of cylinder or cylindroid shape; Have in the ring week in hole the groove of ring-type or boss or in connect regular polygon, the groove of ring-type, boss, in connect regular polygon, in the hole or one is arranged, or have its two, or have its three or more or do not have.
7. hydraulic tongs according to claim 1 is characterized in that: the power handle of hydraulic tongs is hand or electrodynamic type.
8. hydraulic tongs according to claim 1, it is characterized in that: the power handle is a hand, form by lever, clamp holder, spring stack, clamp holder rotating shaft and cover, clamp holder gear shaft, buy oil plug rotating shaft and cover, connecting axle, the clamp holder rotating shaft is connected clamp holder with lever, clamp holder and lever are certain included angle, can rotate in opposite directions around the clamp holder rotating shaft; Spring stack is clipped between the spring base of clamp holder and lever, makes both sides' angle be the change main trend, and the clamp holder gear shaft blocks the rotation of clamp holder, and the maximum angle between clamp holder and the lever is fixed; The clamp holder section is " U " type, and an end has the clamp holder shaft hole and the plug shaft hole of buying oil; Clamp holder rotating shaft cover is ladder cylinder axis type, one end is a small column, one end is a big column, the centre is coaxial cylindrical hole, and clamp holder rotating shaft cover is enclosed within the clamp holder rotating shaft, and the plunger rotating shaft cover of buying oil is enclosed within the plunger rotating shaft of buying oil, the plunger rotating shaft of buying oil is filled in buying oil on the clamp holder and is filled in the shaft hole, clamp holder rotating shaft cover small column end plug is gone in the clamp holder shaft hole on the clamp holder, and the big column end cap is firmly filled in the buying oil plug rotating shaft end face in the plug shaft hole of buying oil on the clamp holder, making the plug rotating shaft of buying oil not have axially-movable; The lever section is " U " type, there is inside positioning boss its both sides, end, the locating slot of this boss and pumping cylinder valve assembly outer wall matches, one or two or three or more screw holes are arranged around the boss, the screw in boss and the screw hole together with the lever location, be fixed on its pumping cylinder valve assembly; Spring stack is made up of the little cover of spring, the big cover of spring, spring, and an end plug of spring is gone in the little cover of spring, and the other end is filled in the big cover of spring, and the big cover of spring is enclosed within outside the little cover of spring; The little cover of spring inside is cylindrical hole, can fill in spring in it, and an end that stretches in the big cover of spring has outside ring week boss, and the other end is a cone; The big cover of spring inside is cylindrical hole, fills in the little cover of spring and spring, and an end that entangles the little cover of spring has the ring week boss of indent, and the other end is a cone.
9. hydraulic tongs according to claim 1, it is characterized in that: oil sac is cylinder type, and the outer surface of oil sac one end has the groove of ring-type, inner surface that inside ring week boss is arranged; The other end of oil sac is a cylinder, in coaxial cylindrical aperture is arranged, be plugged with columniform stopper in the cylindrical aperture.
10. hydraulic tongs according to claim 1, it is characterized in that: the outer wall that connects the nut of clamp and pumping cylinder valve assembly has axial small boss, one end of nut is a small cylindrical opening, the other end is the big column hole, have small column to protrude in the big column hole along the radial direction of nut, this cylinder protrudes into part and matches with the groove of pumping cylinder valve assembly outer wall thread root.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02225775 CN2541125Y (en) | 2002-02-09 | 2002-02-09 | Light-weight hydraulic tongs |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02225775 CN2541125Y (en) | 2002-02-09 | 2002-02-09 | Light-weight hydraulic tongs |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2541125Y true CN2541125Y (en) | 2003-03-26 |
Family
ID=33702916
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02225775 Expired - Fee Related CN2541125Y (en) | 2002-02-09 | 2002-02-09 | Light-weight hydraulic tongs |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2541125Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102615604A (en) * | 2012-04-18 | 2012-08-01 | 苏州沃达园林机械有限公司 | Multifunctional hydraulic pincer |
| CN105459031A (en) * | 2015-10-21 | 2016-04-06 | 国网浙江富阳市供电公司 | Charging hydraulic tool |
| CN105537466A (en) * | 2015-11-13 | 2016-05-04 | 重庆市合川区盐井建筑工程有限公司 | Simple construction steel bar cutting-off device |
-
2002
- 2002-02-09 CN CN 02225775 patent/CN2541125Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102615604A (en) * | 2012-04-18 | 2012-08-01 | 苏州沃达园林机械有限公司 | Multifunctional hydraulic pincer |
| CN105459031A (en) * | 2015-10-21 | 2016-04-06 | 国网浙江富阳市供电公司 | Charging hydraulic tool |
| CN105537466A (en) * | 2015-11-13 | 2016-05-04 | 重庆市合川区盐井建筑工程有限公司 | Simple construction steel bar cutting-off device |
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Owner name: XUZHOU CITY KALAIMU STAINLESS STEEL DIRECT DRINKI Free format text: FORMER OWNER: BAIDAI INDUSTRIAL DEVELOPMENT CO LTD, SHENZHEN Effective date: 20051028 |
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Effective date of registration: 20051028 Address after: 215164, Suzhou, Jiangsu province Wuzhong District Xu Town East Xin Xu junction Industrial Park, No. 6 factory building Patentee after: Suzhou Kalam stainless steel direct drinking water pipeline Co. Ltd. Address before: 6 3D, three village, Meilin 518049, Futian District, Guangdong, Shenzhen Patentee before: Baidai Industrial Development Co Ltd, Shenzhen |
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Granted publication date: 20030326 |