CN211103682U

CN211103682U - Hydraulic torque wrench

Info

Publication number: CN211103682U
Application number: CN201921828770.XU
Authority: CN
Inventors: 王前洪
Original assignee: Ezhou Polytechnic
Current assignee: Ezhou Polytechnic
Priority date: 2019-10-29
Filing date: 2019-10-29
Publication date: 2020-07-28
Anticipated expiration: 2029-10-29

Abstract

The utility model relates to a hydraulic torque wrench, including spanner housing, the counter-force arm, actuating mechanism and hydraulic pressure mechanism all set up in spanner housing, the counter-force arm sets up in spanner housing's right-hand member, actuating mechanism includes drive shaft, drive wheel, pawl and drive wheel, the drive shaft sets up in spanner housing middle part, the drive shaft middle part is connected with the drive wheel, the outside of drive wheel evenly is provided with a plurality of pawl standing grooves along the axis, the pawl riveting is in the pawl standing groove, the drive wheel sets up in the drive wheel outside, and coaxial with the drive shaft, the inboard of drive wheel evenly is provided with a plurality of pawl grooves along the axis, just pawl on the drive wheel can with pawl groove intermeshing on the drive wheel. The utility model discloses can be suitable for not unidimensional bolt, and the structure is more stable.

Description

Hydraulic torque wrench

Technical Field

The utility model relates to a hydraulic tool field, specific saying is a hydraulic pressure torque wrench.

Background

Hydraulic torque wrenches are specialized bolt tightening tools that use hydraulic power to provide a large torque output for the installation and removal of bolts, often used to tighten and loosen bolts greater than one foot. With the development of the technology, the hydraulic torque wrench is widely applied to the fields of electric power (nuclear power, wind power, hydroelectric power and thermal power), ships, metallurgy, traffic, cement, building, aviation and the like.

Among the prior art, hydraulic torque wrench can only be used for a bolt, and work efficiency is not high moreover, consequently, need design a hydraulic wrench, solve above problem, improve work efficiency.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to above not enough, provide a hydraulic pressure torque wrench, can be suitable for not unidimensional bolt, and the structure is more stable.

For solving the technical problem, the utility model discloses a following technical scheme:

a hydraulic torque wrench comprises a wrench shell, a counter force arm, a driving mechanism and a hydraulic mechanism, wherein the driving mechanism and the hydraulic mechanism are arranged in the wrench shell, the counter force arm is arranged at the right end of the wrench shell, the driving mechanism comprises a driving shaft, a driving wheel, pawls and a driving wheel, the driving shaft is arranged in the middle of the wrench shell, the middle of the driving shaft is connected with the driving wheel, a plurality of pawl placing grooves are uniformly arranged on the outer side of the driving wheel along the axis, the pawls are riveted in the pawl placing grooves, the driving wheel is arranged on the outer side of the driving wheel and is coaxial with the driving shaft, a plurality of pawl grooves are uniformly arranged on the inner side of the driving wheel along the axis, the pawls on the driving wheel can be meshed with the pawl grooves on the driving wheel, an extension end is arranged on the outer side of the driving wheel, the piston rod sets up in the piston, the one end that the piston rod stretches out the piston is provided with concave type support, be provided with the slide bar on the concave type support, the slide bar that lives sets up in the sliding tray, the top and the bottom of drive shaft all are provided with the drive head, the drive head is used for loading hexagonal sleeve, spanner casing upper end is provided with rotary joint, rotary joint passes through oil pipe and piston intercommunication, rotary joint is used for linking to each other external oil pump and piston.

Furthermore, an elastic marble is arranged on the driving head.

Furthermore, be provided with the shell fragment on the pawl standing groove, the shell fragment sets up between pawl standing groove and pawl, the shell fragment is used for popping out the pawl standing groove with the pawl, makes the drive wheel can only unidirectional rotation.

Furthermore, a buffer sleeve is arranged at the bottom of the counter force arm.

Furthermore, an annular sheet is fixed at one end of the driving shaft, which is positioned at the outer side of the driving wheel, three extending ends are uniformly arranged at the outer side of the annular sheet along the axis, and the extending ends are fixed at one side of the driving wheel.

The utility model adopts the above technical scheme after, compare with prior art, have following advantage:

the utility model discloses the accessible sets up drive wheel and drive wheel, promotes the drive wheel through hydraulic pressure mechanism and drives the drive wheel and rotate, and the pawl on the drive wheel is kneaded with the pawl groove on the drive wheel, and the drive wheel drives the drive wheel and rotates in order to drive the drive shaft and rotate, because the pawl that the drive wheel outside evenly set up, when making the drive wheel drive the drive wheel and rotate, the drive wheel atress is more even, thereby reduced the pressure between the two, reduced wearing and tearing, improve life, increased torque wrench's stability; the driving head can be loaded with various hexagonal sleeves to use bolts with different sizes, so that the applicability is improved; the buffer sleeve is arranged on the reaction arm, so that the abrasion of the reaction arm can be reduced. Through setting up the shell fragment, can guarantee that piston drive head can only unidirectional rotation, drive the drive head gyration when preventing that the piston from backing back.

The present invention will be described in detail with reference to the accompanying drawings and examples.

Drawings

Fig. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic perspective view of one side of the present invention;

fig. 3 is a schematic view of the other side of the present invention.

In the drawings, the components represented by the respective reference numerals are listed below:

1. a wrench housing; 2. a reaction arm; 3. a drive mechanism; 31. a drive shaft; 32. a drive wheel; 33. a pawl; 34. a driving wheel; 341. a sliding groove; 35. a pawl placing groove; 351. a spring plate; 4. a hydraulic mechanism; 41. a piston; 42. a piston rod; 43. a concave support; 44. a slide bar; 5. a drive head; 6. a rotary joint; 7. a buffer sleeve; 8. an annular sheet; 81. and (6) extending the end.

Detailed Description

The principles and features of the present invention are described below in conjunction with the following drawings, the examples given are only intended to illustrate the present invention and are not intended to limit the scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", "clockwise", "counterclockwise" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.

As shown in fig. 1, 2 and 3, a hydraulic torque wrench comprises a wrench housing 1, a reaction arm 2, a driving mechanism 3 and a hydraulic mechanism 4, wherein the driving mechanism 3 and the hydraulic mechanism 4 are both disposed in the wrench housing 1, the reaction arm 2 is disposed at the right end of the wrench housing 1, the driving mechanism 3 comprises a driving shaft 31, a driving wheel 32, a pawl 33 and a driving wheel 34, the driving shaft 31 is disposed at the middle part of the wrench housing 1, the middle part of the driving shaft 31 is connected with the driving wheel 32, a plurality of pawl placing grooves 35 are uniformly disposed along the axis at the outer side of the driving wheel 32, the pawl 33 is riveted in the pawl placing groove 35, the driving wheel 34 is disposed at the outer side of the driving wheel 32 and is coaxial with the driving shaft 31, a plurality of pawl grooves are uniformly disposed along the axis at the inner side of the driving wheel 34, and the pawl 33 on the driving wheel 32, the outside of drive wheel 34 is provided with the extension end, the last vertical sliding tray 341 that is provided with of extension end, hydraulic pressure mechanism 4 includes piston 41 and piston rod 42, piston rod 42 sets up in piston 41, the one end that piston rod 42 stretches out the piston is provided with concave support 43, be provided with slide bar 44 on the concave support 43, slide bar 44 sets up in sliding tray 341, the top and the bottom of drive shaft 31 all are provided with drive head 5, drive head 5 is used for loading hexagonal sleeve, spanner housing 1 upper end is provided with rotary joint 6, rotary joint 6 passes through oil pipe and piston 41 intercommunication, rotary joint 6 is used for linking to each other external oil pump and piston 41.

In one embodiment, the driving head 5 is provided with an elastic marble.

In one embodiment, the pawl placing groove 35 is provided with a spring 351, the spring 351 is arranged between the pawl placing groove 35 and the pawl 33, and the spring 351 is used for ejecting the pawl 33 out of the pawl placing groove 35 so that the driving wheel 32 can only rotate in one direction.

In one embodiment, a buffer sleeve 7 is arranged at the bottom of the reaction arm 2.

In one embodiment, the end of the driving shaft 31 located outside the driving wheel 32 is fixed with a ring-shaped piece 8, and three protruding ends 81 are uniformly arranged outside the ring-shaped piece 8 along the axis, and the protruding ends 81 are fixed on one side of the driving wheel 34.

In the embodiment, a sleeve on a driving wheel is sleeved outside a nut to be taken down or installed, a piston is connected with an external oil pump through a rotary joint, when the external oil pump pumps oil into the piston, a piston rod is pushed to extend out, the piston rod pushes a slide rod to push a driving wheel to rotate clockwise, a pawl on the driving wheel is clamped into a pawl groove on the driving wheel, the driving wheel drives the driving wheel to drive a driving shaft to rotate, and the driving shaft drives a driving head at the lower end of the driving shaft to rotate;

when the oil pump in with the piston is pumped to external world oil pump, the piston rod withdraws to the piston, and the piston rod promotes the slide bar in order to promote the drive wheel anticlockwise rotation, and when the drive wheel anticlockwise rotation, the pawl can slide on the hypotenuse of pawl groove, withdraws to the pawl standing groove, and the drive wheel is rotatory not following the drive wheel, so relapse, can make the nut continuously rotate to a direction, unscrew or screw up the nut.

The foregoing is illustrative of the best mode of the invention, and details not described herein are within the common general knowledge of a person of ordinary skill in the art. The protection scope of the present invention is subject to the content of the claims, and any equivalent transformation based on the technical teaching of the present invention is also within the protection scope of the present invention.

Claims

1. A hydraulic torque wrench is characterized by comprising a wrench shell (1), a reaction arm (2), a driving mechanism (3) and a hydraulic mechanism (4), wherein the driving mechanism (3) and the hydraulic mechanism (4) are arranged in the wrench shell (1), the reaction arm (2) is arranged at the right end of the wrench shell (1), the driving mechanism (3) comprises a driving shaft (31), a driving wheel (32), a pawl (33) and a transmission wheel (34), the driving shaft (31) is arranged in the middle of the wrench shell (1), the middle of the driving shaft (31) is connected with the driving wheel (32), a plurality of pawl placing grooves (35) are uniformly arranged on the outer side of the driving wheel (32) along the axis, the pawl (33) is riveted in the pawl placing groove (35), the transmission wheel (34) is arranged on the outer side of the driving wheel (32) and is coaxial with the driving shaft (31), a plurality of pawl grooves are uniformly formed in the inner side of the driving wheel (34) along the axis, pawls (33) on the driving wheel (32) can be meshed with the pawl grooves on the driving wheel (34), an extension end is arranged on the outer side of the driving wheel (34), a sliding groove (341) is vertically formed in the extension end, the hydraulic mechanism (4) comprises a piston (41) and a piston rod (42), the piston rod (42) is arranged in the piston (41), a concave bracket (43) is arranged at one end, extending out of the piston, of the piston rod (42), a sliding rod (44) is arranged on the concave bracket (43), the sliding rod (44) is arranged in the sliding groove (341), driving heads (5) are arranged at the top end and the bottom end of the driving shaft (31), the driving heads (5) are used for loading a hexagonal sleeve, and a rotary joint (6) is arranged at the upper end of the hexagonal wrench housing, the rotary joint (6) is communicated with the piston (41) through an oil pipe, and the rotary joint (6) is used for connecting an external oil pump with the piston (41).

2. A hydraulic torque wrench as claimed in claim 1, characterised in that the drive head (5) is provided with resilient balls.

3. The hydraulic torque wrench as claimed in claim 1, wherein the pawl placement groove (35) is provided with a spring plate (351), the spring plate (351) is disposed between the pawl placement groove (35) and the pawl (33), and the spring plate (351) is used for ejecting the pawl (33) out of the pawl placement groove (35) so that the driving wheel (32) can only rotate in one direction.

4. Hydraulic torque wrench according to claim 1, characterised in that the reaction arm (2) is provided with a damping sleeve (7) at its bottom.

5. A hydraulic torque wrench as claimed in claim 1, characterised in that the end of the drive shaft (31) located outside the drive wheel (32) is fixed with a ring segment (8), and three protruding ends (81) are uniformly arranged along the axis outside the ring segment (8), and the protruding ends (81) are fixed on one side of the drive wheel (34).