CN112792776A - Preset torque wrench capable of quickly setting torque - Google Patents
Preset torque wrench capable of quickly setting torque Download PDFInfo
- Publication number
- CN112792776A CN112792776A CN202110212727.6A CN202110212727A CN112792776A CN 112792776 A CN112792776 A CN 112792776A CN 202110212727 A CN202110212727 A CN 202110212727A CN 112792776 A CN112792776 A CN 112792776A
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- handle
- rod
- connector
- working head
- rotatably connected
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- 230000000694 effects Effects 0.000 abstract description 4
- 229910000831 Steel Inorganic materials 0.000 description 6
- 239000010959 steel Substances 0.000 description 6
- 238000000354 decomposition reaction Methods 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B23/00—Details of, or accessories for, spanners, wrenches, screwdrivers
- B25B23/14—Arrangement of torque limiters or torque indicators in wrenches or screwdrivers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B23/00—Details of, or accessories for, spanners, wrenches, screwdrivers
- B25B23/14—Arrangement of torque limiters or torque indicators in wrenches or screwdrivers
- B25B23/142—Arrangement of torque limiters or torque indicators in wrenches or screwdrivers specially adapted for hand operated wrenches or screwdrivers
- B25B23/1422—Arrangement of torque limiters or torque indicators in wrenches or screwdrivers specially adapted for hand operated wrenches or screwdrivers torque indicators or adjustable torque limiters
- B25B23/1427—Arrangement of torque limiters or torque indicators in wrenches or screwdrivers specially adapted for hand operated wrenches or screwdrivers torque indicators or adjustable torque limiters by mechanical means
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Details Of Spanners, Wrenches, And Screw Drivers And Accessories (AREA)
Abstract
The invention relates to the technical field of manual tools, in particular to a preset torque wrench capable of quickly setting torque, which comprises a handle, a main pin, a working head, a connector, a grooved pulley, an ejector rod, a swing rod, a roller, a pin, a top ring, a spring and a force application rod, wherein the tail part of the working head is rotatably connected with the front part of the handle through the main pin, the connector is rotatably connected with the working head, the grooved pulley is concentrically and fixedly connected with the connector, grooves are distributed on the side surface of the grooved pulley along the circumference, the front part of the swing rod is rotatably connected with the main pin, the front end of the swing rod is fixedly connected with the ejector rod, the ejector rod is abutted against the grooves, the tail part of the swing rod is rotatably connected with the roller, the roller is abutted against the top ring, internal threads are machined on the inner wall of the tail part of the handle. The substantial effects of the invention are as follows: through the resolution of the primary force, the spring is softer, and the force applying rod can be quickly and easily screwed when the torque is set.
Description
Technical Field
The invention relates to the technical field of manual tools, in particular to a preset torque wrench capable of quickly setting torque.
Background
When the screw fasteners such as screws, bolts, nuts and the like are fastened, the applied torque needs to be controlled so as to ensure that the screw fastening is realized, the thread is not damaged due to overlarge torque, and the thread is ensured to be sufficiently fastened. The preset torque wrench has a preset torque value and an audible device. When the torque-limiting device is used, a required upper limit of a torque value is set, when the applied torque reaches a set value, the wrench can make a sound of clamping a tower or bend a certain angle at the connection part of the wrench, and the obvious hand feeling vibration is accompanied, so that the situation that the torque-limiting device is fastened and no force is applied is provided, and the completion of work is prompted.
Chinese patent CN109866154A describes a torque wrench, including wrench head, wrench rod and afterburning loop bar, afterburning loop bar is the cavity casing, and the upper end is equipped with connecting groove, and wrench head and wrench rod are overall structure, and wrench head's lower extreme necking down department is equipped with the boss, and wrench rod's connecting groove and wrench head's boss face counterbalance lean on, and wrench rod and afterburning loop bar pass through rotation axis swing joint together, still are equipped with steel ball and spring in the afterburning loop bar, and wrench rod's lower extreme is equipped with the scarf, scarf and the scarf is with steel ball surface looks butt, and the lower extreme of steel ball is connected with the spring, and the lower extreme connection of spring is adjusted the jackscrew, adjusts the jackscrew and afterburning loop bar's lower extreme inner wall threaded connection. When the wrench is used, the nut is stretched into a bayonet in the wrench head, the stress application sleeve rod is twisted, when a set torque value is reached, the steel balls touch the inner wall of the stress application sleeve rod and send out clear alarm sound, vibration can be sensed on the stress application sleeve rod, and at the moment, locking can be stopped. The technical scheme has the following problems: the wrench rod directly acts on the steel ball, so that when the torque is large, the spring needs to apply enough pre-pressure on the steel ball, the elastic coefficient of the spring is large, namely the spring is hard, and the preset torque is hard.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: the technical problem that torque setting of an existing torque wrench is laborious and inconvenient. A preset torque wrench capable of quickly setting torque is provided.
In order to solve the technical problems, the technical scheme adopted by the invention is as follows: a preset torque wrench capable of quickly setting torque comprises a handle, a main pin, a working head, a connector, a grooved pulley, a mandril, a swing rod, a roller, a pin, a top ring, a spring and a force application rod, wherein the tail part of the working head is rotatably connected with the front part of the handle through the main pin, the handle is hollow, the connector is rotatably connected with the front part of the working head, the connector is used for being connected with a tightening part of a tightening target, the grooved pulley is positioned in the working head, two ends of the grooved pulley are abutted against the inner wall of the working head, the grooved pulley is concentrically and fixedly connected with the connector, grooves are distributed on the side surface of the grooved pulley along the circumference, the front part of the swing rod is rotatably connected with the main pin, the front end of the swing rod is fixedly connected with the mandril, the mandril is abutted against the grooves, the grooves are in contact with the mandril, the utility model discloses a handle, including swing rod, handle, top ring, spring, pendulum rod afterbody, the pendulum rod afterbody stretches into in the handle, the pendulum rod rotates with the gyro wheel to be connected, the top ring just can slide in the handle with handle inner wall butt, gyro wheel and top ring butt, handle afterbody inner wall processing has the internal thread, the power application pole have with the external screw thread that the internal thread matches, the spring is located between power application pole and the top ring, processing has the scale mark on the power application pole. When the torque received by the tightening target reaches a certain value, the force along the tangential direction enables the swing rod to overcome the limitation of the roller and the top ring to rotate, the tail of the swing rod can impact the inner wall of the handle, and vibration and sound are sent to prompt the preset torque. Because through the resolution of once power for the power that the spring need provide reduces by a wide margin, and then makes the spring softer, can be fast and light when setting for the moment of torsion twist the settlement of power rod completion moment of torsion.
Preferably, the ejector pin fixing device further comprises two ejector pins, the two ejector pins are fixedly installed on two sides of the front end of the top ring, and the two ejector pins are abutted to the roller. Through two thimbles and gyro wheel butt, complex precision when can improve thimble and gyro wheel assembly.
Preferably, the electric toothbrush further comprises a handle, and the handle is fixedly connected with the tail part of the handle; still include the fixed pin, the sheave passes through fixed pin and connector fixed connection.
Preferably, a through hole is formed in the front of the working head, the connector is rotatably connected with the through hole, and the connector and the working head form two revolute pairs. The assembly stability of connector is improved, the precision of torque wrench is improved.
Preferably, still include the end cap, the power application pole includes hand wheel, well core rod and screw ring, hand wheel and well core rod afterbody fixed connection, screw ring and well core rod middle part fixed connection, the screw ring have with the interior screw-thread fit's of handle external screw thread, end cap and handle afterbody fixed connection, the end cap has the hole, the hole matches with well core rod outer wall.
A preset torque wrench capable of quickly setting torque comprises a handle, a main pin, a working head, a connector, a grooved pulley, an ejector rod, a swing rod, a roller wheel, a pin, a top ring, a spring, a pointer, a screw rod, a pointer sleeve, a hand wheel and a plug, wherein the tail part of the working head is rotatably connected with the front part of the handle through the main pin, the handle is hollow, the connector is rotatably connected with the front part of the working head, the connector is used for being connected with a tightening part of a tightening target, the grooved pulley is positioned in the working head, two ends of the grooved pulley are abutted against the inner wall of the working head, the grooved pulley is concentrically and fixedly connected with the connector, grooves are distributed on the side surface of the grooved pulley along the circumference, the front part of the swing rod is rotatably connected with the main pin, the front end of the swing rod is fixedly connected with the ejector rod, the ejector rod is abutted against the grooves, the grooves are, the utility model discloses a handle, including the handle, the handle is including the pendulum rod afterbody, the pendulum rod rotates with the gyro wheel to be connected, the apical ring just can follow handle endwise slip with the handle inner wall butt, gyro wheel and apical ring butt, handle middle part processing has the pointer groove, pointer muff is in the handle, the spring is located between pointer sleeve and the apical ring, the pointer with pointer muffjoint, pointer and pointer groove joint, pointer groove both sides processing has the scale mark, pointer muffjoint has the internal thread, the screw rod have with the external screw thread that the internal thread matches, the end cap with handle afterbody fixed connection, the screw rod have with the shaft shoulder of end cap butt, the hand wheel with screw rod afterbody fixed connection.
The substantial effects of the invention are as follows: when the torque that the target received was screwed up reaches a definite value, when the restriction that the power along tangential direction made the pendulum rod overcome gyro wheel and apical ring took place to rotate, the pendulum rod afterbody can strike the handle inner wall, sent vibration and audible cue and reach and predetermine the moment of torsion, owing to through the decomposition of once power for the spring is softer, can be fast and light when setting for the moment of torsion twist and move the power rod.
Drawings
FIG. 1 is a schematic view of a torque wrench according to an embodiment.
FIG. 2 is a cross-sectional view of a torque wrench according to an embodiment.
Fig. 3 is a schematic view of a sheave structure according to an embodiment.
FIG. 4 is a cross-sectional top view of a torque wrench according to an embodiment.
FIG. 5 is a diagram illustrating a force applied to a lift pin according to an embodiment of the present invention.
FIG. 6 is a schematic view of a force-applying rod according to an embodiment.
FIG. 7 is a schematic view of a lift pin out of contact with a sheave according to an embodiment.
FIG. 8 is a cross-sectional view of a torque wrench according to an embodiment.
Wherein: 1. the device comprises a force applying rod, 2, a handle, 3, a handle, 4, a main pin, 5, a hand wheel, 6, a plug, 7, a working head, 8, a connector, 9, a top ring, 10, a threaded ring, 11, a spring, 12, a pin, 13, a roller, 14, a swing rod, 15, a top rod, 16, a grooved wheel, 17, a thimble, 18, a fixed pin, 19, a pointer, 20, a pointer groove, 21, a screw rod, 22 and a pointer sleeve.
Detailed Description
The following provides a more detailed description of the present invention, with reference to the accompanying drawings.
The first embodiment is as follows:
a preset torque wrench capable of quickly setting torque is disclosed, please refer to fig. 1-4, the embodiment comprises a handle 3, a main pin 4, a working head 7, a connector 8, a grooved pulley 16, a push rod 15, a swing rod 14, a roller 13, a pin 12, a top ring 9, a spring 11 and a forcing rod 1, the tail part of the working head 7 is rotatably connected with the front part of the handle 3 through the main pin 4, the handle 3 is hollow, the connector 8 is rotatably connected with the front part of the working head 7, the connector 8 is used for being connected with a tightening part of a tightening target, the grooved pulley 16 is positioned in the working head 7, two ends of the grooved pulley 16 are abutted against the inner wall of the working head 7, the grooved pulley 16 is concentrically and fixedly connected with the connector 8, grooves are distributed on the side surface of the grooved pulley 16 along the circumference, the front part of the swing rod 14 is rotatably connected with the main pin 4, the front end of the swing rod 14, two separation lines are located 4 axle centers of king-pin and the planar one side of ejector pin 15 axle center affirmation, 14 afterbody of pendulum rod stretch into in the handle 3, rotate with gyro wheel 13 and be connected, 3 inner wall butts of handle and can follow handle 3 axial slip of apical ring 9, gyro wheel 13 and apical ring 9 butt, 3 afterbody inner wall processing of handle have the internal thread, the power application pole 1 has the external screw thread that matches with the internal thread, spring 11 is located between power application pole 1 and the apical ring 9, processing has the scale mark on the power application pole 1. Referring to fig. 6, two ejector pins 17 are fixedly installed on two sides of the front end of the top ring 9, and both ejector pins 17 are abutted against the roller 13. The handle 2 is fixedly connected with the tail part of the handle 3; the device also comprises a fixing pin 18, and the sheave 16 is fixedly connected with the connecting head 8 through the fixing pin 18. The stress application rod 1 comprises a hand wheel 5, a center rod and a threaded ring 10, the hand wheel 5 is fixedly connected with the tail of the center rod, the threaded ring 10 is fixedly connected with the middle of the center rod, the threaded ring 10 is provided with an external thread matched with the internal thread of the handle 3, the plug 6 is fixedly connected with the tail of the handle 3, the plug 6 is provided with an inner hole, and the inner hole is matched with the outer wall of the center rod. The front part of the working head 7 is provided with a through hole, the connector 8 is rotatably connected with the through hole, and the connector 8 and the working head 7 form two revolute pairs.
After the connector 8 receives the force transmitted by the tightening object through the tightening piece, the force is decomposed into two component forces through the groove and the ejector rod 15, please refer to fig. 5, one component force is in the direction Fs of the connecting line of the center of the ejector rod 15 and the center of the main pin 4, the other component force is in the tangential direction Fg of the main pin 4, the force in the tangential direction is smaller, the force in the tangential direction enables the swing rod 14 to have a rotation trend, the rotation trend is limited by the roller 13 and the top ring 9, when the torque received by the tightening object reaches a certain value, the force in the tangential direction enables the swing rod 14 to rotate by overcoming the limitation of the roller 13 and the top ring 9, the tail of the swing rod 14 can impact the inner wall of the handle 3, and vibration and sound are sent to prompt that the preset torque is reached. Because the force required to be provided by the spring 11 is greatly reduced through the resolution of the primary force, the spring 11 is softer, and the force applying rod 1 can be quickly and easily screwed to complete the torque setting when the torque is set.
Referring to fig. 7, when the handle 3 is pulled reversely, the rod 15 will be separated from the grooved pulley 16, so that the grooved pulley 16 and the connecting head 8 can rotate freely relative to the working head 7, and when a target screw is screwed, the handle 3 can be pulled reversely without separating the wrench from the target screw, thereby increasing the efficiency of screwing the screw and achieving the effect similar to a ratchet wrench.
The beneficial technical effects of this embodiment are: when the torque received by a tightening target reaches a certain value, when the force in the tangential direction enables the swing rod 14 to overcome the limitation of the roller 13 and the top ring 9 to rotate, the tail of the swing rod 14 can impact the inner wall of the handle 3, vibration and sound prompt are sent to achieve the preset torque, and the spring 11 is soft through the decomposition of the primary force, so that the force adding rod 1 can be quickly and easily screwed when the torque is set.
Example two:
a preset torque wrench capable of quickly setting torque is disclosed, please refer to fig. 8, the embodiment comprises a handle 3, a main pin 4, a working head 7, a connector 8, a grooved pulley 16, a mandril 15, a swing rod 14, a roller 13, a pin 12, a top ring 9, a spring 11, a pointer 19, a screw rod 21, a pointer sleeve 22, a hand wheel 5 and a plug 6, the tail of the working head 7 is rotatably connected with the front part of the handle 3 through the main pin 4, the handle 3 is hollow, the connector 8 is rotatably connected with the front part of the working head 7, the connector 8 is used for being connected with a tightening part of a tightening target, the grooved pulley 16 is positioned in the working head 7, two ends of the grooved pulley 16 are abutted against the inner wall of the working head 7, the grooved pulley 16 and the connector 8 are fixedly connected concentrically, grooves are distributed on the side surface of the grooved pulley 16 along the circumference, the front part of the swing rod 14 is rotatably connected with the main pin 4, the front, the two separation lines are located on one side of a plane determined by the axis of the main pin 4 and the axis of the ejector rod 15, the tail of the swing rod 14 extends into the handle 3 and is connected with the roller 13 in a rotating mode, the ejector ring 9 is abutted to the inner wall of the handle 3 and can slide axially along the handle 3, the roller 13 is abutted to the ejector ring 9, a pointer groove 20 is machined in the middle of the handle 3, the pointer sleeve 22 is sleeved in the handle 3, the spring 11 is located between the pointer sleeve 22 and the ejector ring 9, the pointer 19 is connected with the pointer sleeve 22, the pointer 19 is clamped with the pointer groove 20, scale lines are machined on two sides of the pointer groove 20, an internal thread is machined on the pointer sleeve 22, the screw 21 is provided with an external thread matched with the internal thread, the plug 6 is fixedly connected with the tail of the handle 3, the screw 21 is provided with a shaft shoulder. The rest of the structure is the same as the first embodiment.
The above embodiment is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way, and other variations and modifications may be made without departing from the technical scope of the claims.
Claims (7)
1. A preset torque wrench capable of quickly setting torque is characterized in that,
comprises a handle, a main pin, a working head, a connector, a grooved wheel, a mandril, a swing rod, a roller, a pin, a top ring, a spring and a stressing rod,
the tail part of the working head is rotatably connected with the front part of the handle through the main pin, the handle is hollow, the connector is rotatably connected with the front part of the working head, the grooved wheel is positioned in the working head, two ends of the grooved wheel are abutted against the inner wall of the working head, the grooved wheel is concentrically and fixedly connected with the connector, grooves are distributed on the side surface of the grooved pulley along the circumference, the front part of the swing rod is rotationally connected with the main pin, the front end of the swing rod is fixedly connected with the ejector rod, the ejector rod is abutted against the groove, the tail part of the swing rod extends into the handle, the swing rod is rotatably connected with the roller, the top ring is abutted against the inner wall of the handle and can slide in the handle, the roller is abutted against the top ring, the handle afterbody inner wall processing has the internal thread, the power rod have with the external screw thread that the internal thread matches, the spring is located between power rod and the apical ring, processing has the scale mark on the power rod.
2. The preset torque wrench of claim 1,
still include two thimbles, two thimble fixed mounting is in the both sides of thimble front end, two the thimble all with the gyro wheel butt.
3. Preset torque wrench for rapid setting of torque according to claim 1 or 2,
the handle is fixedly connected with the tail part of the handle; still include the fixed pin, the sheave passes through fixed pin and connector fixed connection.
4. Preset torque wrench for rapid setting of torque according to claim 1 or 2,
the front part of the working head is provided with a through hole, the connector is rotatably connected with the through hole, and the connector and the working head form two revolute pairs.
5. Preset torque wrench for rapid setting of torque according to claim 1 or 2,
still include the end cap, the power application pole includes hand wheel, well core rod and screw ring, hand wheel and well core rod afterbody fixed connection, screw ring and well core rod middle part fixed connection, the screw ring have with the interior screw-thread fit's of handle external screw thread, end cap and handle afterbody fixed connection, the end cap has the hole, the hole matches with well core rod outer wall.
6. A preset torque wrench capable of quickly setting torque is characterized in that,
comprises a handle, a main pin, a working head, a connector, a grooved wheel, a mandril, a swing rod, a roller, a pin, a top ring, a spring, a pointer, a screw rod, a pointer sleeve, a hand wheel and a plug,
the tail of the working head is rotatably connected with the front part of the handle through a main pin, the handle is hollow, the connector is rotatably connected with the front part of the working head, the connector is used for being connected with a tightening part for tightening a target, the grooved wheel is positioned in the working head, two ends of the grooved wheel are abutted against the inner wall of the working head, the grooved wheel is concentrically and fixedly connected with the connector, grooves are distributed on the side surface of the grooved wheel along the circumference, the front part of the swing rod is rotatably connected with the main pin, the front end of the swing rod is fixedly connected with an ejector rod, the ejector rod is abutted against the grooves, the tail part of the swing rod extends into the handle, the swing rod is rotatably connected with a roller wheel, the top ring is abutted against the inner wall of the handle and can axially slide along the handle, the roller is abutted against the top ring, a pointer groove is processed in the middle part, the pointer with pointer muffjoint, pointer and pointer groove joint, pointer groove both sides processing has the scale mark, pointer sleeve processing has the internal thread, the screw rod have with the external screw thread that the internal thread matches, the end cap with handle afterbody fixed connection, the screw rod have with the shaft shoulder of end cap butt, the hand wheel with screw rod afterbody fixed connection.
7. The preset torque wrench of claim 6, wherein the torque setting mechanism comprises a torque setting mechanism,
the ejector pin fixing device comprises an ejector ring and two ejector pins, wherein the ejector pins are fixedly arranged on two sides of the front end of the ejector ring, and both the ejector pins are abutted against the roller;
the handle is fixedly connected with the tail part of the handle; the grooved pulley is fixedly connected with the connector through the fixing pin;
the front part of the working head is provided with a through hole, the connector is rotatably connected with the through hole, and the connector and the working head form two revolute pairs.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110212727.6A CN112792776B (en) | 2021-02-25 | Preset torque spanner for quick setting torque |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110212727.6A CN112792776B (en) | 2021-02-25 | Preset torque spanner for quick setting torque |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112792776A true CN112792776A (en) | 2021-05-14 |
| CN112792776B CN112792776B (en) | 2024-06-21 |
Family
ID=
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| CN112338849A (en) * | 2020-11-03 | 2021-02-09 | 杭州倍力耐工具有限公司 | Preset torque wrench convenient to use |
| CN113172576A (en) * | 2021-03-28 | 2021-07-27 | 杭州倍力耐工具有限公司 | Preset torque wrench with rear reading |
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