CN105269503A - Concentric shaft counter-force arm hydraulic torque wrench - Google Patents
Concentric shaft counter-force arm hydraulic torque wrench Download PDFInfo
- Publication number
- CN105269503A CN105269503A CN201510836812.4A CN201510836812A CN105269503A CN 105269503 A CN105269503 A CN 105269503A CN 201510836812 A CN201510836812 A CN 201510836812A CN 105269503 A CN105269503 A CN 105269503A
- Authority
- CN
- China
- Prior art keywords
- output shaft
- force arm
- counter
- torque output
- seams
- 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.)
- Pending
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Classifications
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- 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
- B25B21/00—Portable power-driven screw or nut setting or loosening tools; Attachments for drilling apparatus serving the same purpose
- B25B21/004—Portable power-driven screw or nut setting or loosening tools; Attachments for drilling apparatus serving the same purpose of the ratchet type
- B25B21/005—Portable power-driven screw or nut setting or loosening tools; Attachments for drilling apparatus serving the same purpose of the ratchet type driven by a radially acting hydraulic or pneumatic piston
Abstract
The invention discloses a concentric shaft counter-force arm hydraulic torque wrench. A hydraulic oil cylinder, a ratchet wheel assembly and a torque output shaft are arranged in a shell. The torque output shaft is provided with an output shaft outer key involute spline tooth rod, a smooth round rod and a square body. A torque output shaft hole is formed in the shell and is of an inner key involute spline tooth-shaped structure. The output shaft outer key involute spline tooth rod of the torque output shaft is arranged in the shell and connected with the ratchet wheel assembly. The square body at the end of the smooth round rod extends out of a counter-force arm shaft sleeve and the shell to serve as a torque output end. The smooth round rod is sleeved with the counter-force arm shaft sleeve, and an inner hole of the shaft sleeve is in sliding fit with the smooth round rod. The inner key involute spline tooth-shaped structure corresponding to an outer key involute spline tooth-shaped structure of the counter-force arm shaft sleeve is arranged on the wall of the torque output shaft hole in the shell. One end of the shaft sleeve is fixedly arranged on the shell in a clearance fit manner, and the outer end of the shaft sleeve extends out of the shell to serve as a counter-force arm of the hydraulic torque wrench. The concentric shaft counter-force arm hydraulic torque wrench has the excellent properties of the high torque output precision, good reliability, long service life and the like.
Description
Technical field
The invention belongs to a kind of hydraulic torque wrench field, particularly relates to a kind of concentric shafts counter-force arm hydraulic torque wrench.
Background technology
Existing hydraulic torque wrench is a kind of common tool of fastening or dismounting large gauge bolt.Fig. 1, illustrated in fig. 2 be a kind of existing hydraulic torque wrench, it comprises housing 1, hydraulic cylinder, torque output shaft 3 and counter-force arm 4, and hydraulic cylinder holder housing 1 is inner, and counter-force arm 4 is arranged on the side of housing 1.This spanner is subject to the effect of two power systems in the process of fastening or demounting bolt, and one is detorsion power system, and two is axial shearing force systems, and two power are angle in 90 °.In afterburner process, two power systems easily cause the unbalance loading of spanner, reduce the controllable precision of spanner, often do not reach default effect to the pretightning force of bolt, and also can have when unbalance loading is excessive and can cause breaking of spanner housing.The why existing hydraulic torque wrench reason that in use repair rate is high, service life is short that Here it is.
Summary of the invention
For the deficiencies in the prior art, the invention provides a kind of concentric shafts counter-force arm hydraulic torque wrench that can simplify Moment, can reach moment of torsion and pretightning force output accuracy higher than 3%, good reliability, the performance that the life-span is long.
The technical scheme realizing above-mentioned purpose is:
A kind of concentric shafts counter-force arm hydraulic torque wrench, there is housing, hydraulic jack is provided with in housing, ratchet assembly and torque output shaft, hydraulic jack drives the unidirectional loading of torque output shaft to rotate by ratchet assembly, described torque output shaft has output shaft ratch, tetragonal body, with be positioned at output shaft ratch and tetragonal body pars intermedia is smooth round bar, described housing has torque output shaft hole, output shaft ratch to be arranged in housing by torque output shaft hole and to be connected with ratchet assembly, described output shaft ratch is that output shaft external key bursts at the seams spline ratch, described smooth round bar and the output shaft external key spline ratch that bursts at the seams is coaxial, tetragonal body four faces and smooth round bar axial line symmetry, tetragonal body extends to hull outside as torque output, smooth round bar is arranged with the axle sleeve as counter-force arm, endoporus and the smooth round bar of described axle sleeve are slidably matched, the outside of axle sleeve has external key and to burst at the seams spline teeth structure, the hole wall in described torque output shaft hole is provided with the corresponding internal key of the spline teeth structure that to burst at the seams with external key on axle sleeve and bursts at the seams spline teeth structure, one end of axle sleeve is coordinated be fixedly mounted on housing by external key spline teeth structure and the internal key spline teeth structure interval that bursts at the seams that bursts at the seams, and the other end of axle sleeve extends to the counter-force arm of hull outside as hydraulic torque wrench.
Described a kind of concentric shafts counter-force arm hydraulic torque wrench, described tetragonal body is provided with the first installation fixing hole.
Described a kind of concentric shafts counter-force arm hydraulic torque wrench, on described axle sleeve, the external key outline that spline teeth structure is positioned at hull outside that bursts at the seams is provided with the second installation fixing hole.
Described a kind of concentric shafts counter-force arm hydraulic torque wrench, also there is connection overcoat, described one end of connection overcoat is connected with the other end of axle sleeve, connect the other end of overcoat to act on to be tightened surface or coordinate with to be tightened surperficial packing ring effect and locate, as the counter-force arm of hydraulic torque wrench.
Described a kind of concentric shafts counter-force arm hydraulic torque wrench, also has connection inner sleeve in described connection overcoat, and the one end connecting inner sleeve is connected with tetragonal body and torque output, and the other end connecting inner sleeve acts on standard nut.
Compared with prior art, the invention utilizes axle sleeve to be connected with torque output shaft coaxial package as counter-force arm, make hydraulic torque wrench in process bolt being applied to torsion, only be subject to the twisting resistance in torque output shaft direction, avoid the side direction unbalance loading of spanner, can obtain wrench side direction unbalance loading is zero, ensures moment of torsion pretightning force accuracy class and effective service life extending hydraulic torque wrench.
The invention be by spline housing that concentric shafts counter-force arm key is burst at the seams directly be sleeved on the axostylus axostyle (the smooth round bar of torque output shaft) of torque output shaft upper, 360 ° of concentric shafts counter-force arm can be obtained export, reduce spanner the complexity of stressed system, the side direction unbalance loading of spanner can be avoided, thus the distortion fracture of spanner is avoided, its service life is extended, and the installation location of counter-force arm is also very convenient.
The concentric shafts counter-force arm hydraulic torque wrench of the invention, comprise as wrench body hydraulic jack housing, hydraulic jack housing is provided with the axis hole of mounting torque output shaft, be sleeved on the torque output shaft in axis hole, be fixed on hydraulic oil cylinder body and drive the unidirectional ratchet assembly of reinforcing rotation of torque output shaft and the counter-force arm as hydraulic jack housings support parts, the described coaxial counter-force arm key spline housing output that bursts at the seams directly is sleeved on the smooth round bar of leading portion that torque output shaft exposes, be matched in clearance between the two, simultaneously, burst at the seams another termination of spline housing of counter-force arm key is fixedly connected with hydraulic jack housing.
Further, the smooth round bar of the leading portion that described torque output shaft exposes is provided with axle sleeve, this axle sleeve is that a coaxial counter-force arm key bursts at the seams spline housing, this concentric shafts counter-force arm key spline housing that bursts at the seams forms circumferential slippage with smooth round bar and coordinates, one end of described counter-force arm fixedly mounts described torque output shaft cover and loads onto, and the concentric shafts counter-force arm key spline housing that bursts at the seams is fixedly connected with hydraulic jack housing.
Further, the described concentric shafts counter-force arm key spline housing that bursts at the seams to burst at the seams spline housing for a kind of outer alligator, the torque output shaft hole wall of described hydraulic jack housing is provided with key and bursts at the seams spline tooth, described counter-force arm exports the one end be socketed with torque output shaft and is provided with key and bursts at the seams splined hole, key spline tooth and the key splined hole that bursts at the seams that bursts at the seams is all in mating connection with spline housing, and the concentric shafts counter-force arm key spline housing that bursts at the seams is exported and fixed by spline housing between hydraulic jack housing.Compared with prior art, the invention is directly sleeved on the axostylus axostyle of torque output shaft, can obtains 360 ° of concentric shafts counter-force arm and export due to the concentric shafts counter-force arm key spline housing that bursts at the seams, reduce spanner the complexity of stressed system, the side direction unbalance loading of spanner can be avoided, thus the distortion fracture of spanner is avoided, its service life is extended, and the installation location of counter-force arm is also very convenient.
Accompanying drawing explanation
Fig. 1 is that certain commonly uses the structural representation of hydraulic torque wrench now.
Fig. 2 is that certain commonly uses the structural representation of hydraulic torque wrench now.
Fig. 3 is the unitary construction schematic diagram of a kind of concentric shafts counter-force arm of the invention hydraulic torque wrench
Fig. 4 is the side view of a kind of concentric shafts counter-force arm hydraulic torque wrench shown in Fig. 3.
Fig. 5 is the assembling schematic diagram of middle torque output shaft and axle sleeve shown in Fig. 3.
Fig. 6 is the schematic diagram of bottom bracket axle shown in Fig. 5.
Fig. 7 is the structural representation of middle torque output shaft shown in Fig. 5.
Fig. 8 is the torque output shaft hole front-end view on middle shell shown in Fig. 3.
Fig. 9 is the use schematic diagram of a kind of concentric shafts counter-force arm of the invention hydraulic torque wrench.
1-hydraulic jack housing, 2-torque output shaft hole, 3-torque output shaft, 301-output shaft external key bursts at the seams spline ratch, the smooth round bar of 302-, 303-tetragonal body, 4-counter-force arm, 501-external key bursts at the seams spline teeth structure, 502-inner hole of shaft sleeve, 6-internal key bursts at the seams spline teeth structure, 7-ratchet assembly, and 8-connects overcoat, 9-connects inner sleeve, 10-standard bolt, 11-standard nut, 12-packing ring, to be tightened of 13-.
Detailed description of the invention
A kind of concentric shafts counter-force arm hydraulic torque wrench as shown in figs. 3-9, there is hydraulic jack housing 1, hydraulic jack is provided with in hydraulic jack housing 1, ratchet assembly 7 and torque output shaft 3, hydraulic jack drives the unidirectional loading of torque output shaft 3 to rotate by ratchet assembly, described torque output shaft has output shaft ratch 301, smooth round bar 302 and tetragonal body 303, described output shaft ratch 301 to burst at the seams spline ratch 301 for output shaft external key, described housing has torque output shaft hole 6, torque output shaft ratch 301 to be arranged in housing 1 by torque output shaft hole 2 and to be connected with ratchet assembly, described smooth round bar 302 is coaxial with torque output shaft ratch 301, tetragonal body 303 4 faces and smooth round bar 302 axial line symmetry, tetragonal body 303 extends to hull outside as torque output as shown in Figure 7, preferably, the tetragonal body 303 as torque output extended to outside housing 1 outline that can replace is the output of hexahedron structure.Smooth round bar 302 is set with the axle sleeve 5 as counter-force arm, the endoporus of described axle sleeve 502 and smooth round bar 302 are slidably matched, and the outside of axle sleeve 5 has external key and to burst at the seams spline teeth structure 501; The hole wall in described torque output shaft hole 2 is provided with the corresponding internal key of the spline teeth structure 501 that to burst at the seams with external key and bursts at the seams spline teeth structure 6, one end of axle sleeve 5 is fixedly mounted on housing 1 by external key spline teeth structure 501 and internal key spline teeth structure 6 matched in clearance that bursts at the seams that bursts at the seams, and the other end of axle sleeve 5 extends to the counter-force arm as hydraulic torque wrench outside housing 1.
The outside of axle sleeve 5 is that external key bursts at the seams spline teeth structure 501 as shown in Figure 6, for bursting at the seams spline teeth structure 6 with the external key corresponding internal key of spline teeth structure 501 that bursts at the seams on the hole wall of described torque output shaft hole 2.
The described hull outside that extends to as shown in Figure 7 is provided with the first installation fixing hole as the tetragonal body 303 of torque output.Described axle sleeve 5 outline be positioned at outside housing 1 is provided with the second installation fixing hole.
More preferably, this concentric shafts counter-force arm hydraulic torque wrench as shown in Figure 9, also have and connect overcoat 8, the one end connecting overcoat 8 is connected with the other end of axle sleeve 5, and it is fastening to install fixing hole by second on axle sleeve 5, the other end connecting overcoat 8 acts on to be tightened 13 surface, or acting on coordinating with the packing ring 12 on to be tightened 13 surfaces locates, as the counter-force arm of hydraulic torque wrench.Connect in overcoat 8 also to have and connect inner sleeve 9, the one end connecting inner sleeve 9 is connected with tetragonal body 303 i.e. torque output, and by torque output first is installed fixing hole and is fastenedly connected, the standard nut 11 connected on the other end of inner sleeve 9 and standard bolt 10 acts on.Counter-force arm is connected with torque output shaft coaxial package by the invention, make hydraulic torque wrench in process bolt being applied to torsion, only be subject to the twisting resistance in torque output shaft direction, avoid the side direction unbalance loading of spanner, can obtain wrench side direction unbalance loading is zero, ensure moment of torsion and pretightning force accuracy class, and effectively extend the service life of hydraulic torque wrench.
Claims (5)
1. a concentric shafts counter-force arm hydraulic torque wrench, there is housing, hydraulic jack is provided with in housing, ratchet assembly (7) and torque output shaft (3), it is characterized in that, hydraulic jack drives the unidirectional loading of torque output shaft (3) to rotate by ratchet assembly, described torque output shaft has output shaft ratch (301), tetragonal body (303), with be positioned at output shaft ratch (301) and tetragonal body (303) pars intermedia is smooth round bar (302), described housing has torque output shaft hole, output shaft ratch (301) to be arranged in housing by torque output shaft hole (2) and to be connected with ratchet assembly, described output shaft ratch (301) to be burst at the seams spline ratch (301) for output shaft external key, described smooth round bar (302) and the output shaft external key spline ratch (301) that bursts at the seams is coaxial, tetragonal body (303) four faces and smooth round bar (302) axial line symmetry, tetragonal body (303) extends to hull outside as torque output, smooth round bar (302) is arranged with the axle sleeve (5) as counter-force arm, endoporus (502) and the smooth round bar (302) of described axle sleeve are slidably matched, the outside of axle sleeve (5) has external key and to burst at the seams spline teeth structure (501), the hole wall of described torque output shaft hole (2) is provided with external key upper with axle sleeve (5) the corresponding internal key of spline teeth structure (501) that bursts at the seams and bursts at the seams spline teeth structure (6), one end of axle sleeve (5) is fixedly mounted on housing by external key spline teeth structure (501) and internal key spline teeth structure (6) matched in clearance that bursts at the seams that bursts at the seams, and the other end of axle sleeve (5) extends to the counter-force arm of hull outside as hydraulic torque wrench.
2. a kind of concentric shafts counter-force arm hydraulic torque wrench according to claim 1, it is characterized in that, described tetragonal body (303) is provided with the first installation fixing hole.
3. a kind of concentric shafts counter-force arm hydraulic torque wrench according to claim 1, is characterized in that, the upper external key of described axle sleeve (5) outline that spline teeth structure (501) is positioned at hull outside that bursts at the seams is provided with the second installation fixing hole.
4. according to a kind of concentric shafts counter-force arm hydraulic torque wrench according to claim 1, it is characterized in that, also there is connection overcoat (8), one end of described connection overcoat (8) is connected with the other end of axle sleeve (5), the other end connecting overcoat (8) acts on to be tightened (13) surface or acts on coordinating with the packing ring (12) on to be tightened (13) surface locates, as the counter-force arm of hydraulic torque wrench.
5. according to a kind of concentric shafts counter-force arm hydraulic torque wrench according to claim 4, it is characterized in that, in described connection overcoat (8), also there is connection inner sleeve (9), the one end connecting inner sleeve (9) is connected with tetragonal body (303) i.e. torque output, and the other end connecting inner sleeve (9) acts on standard nut (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510836812.4A CN105269503A (en) | 2015-11-26 | 2015-11-26 | Concentric shaft counter-force arm hydraulic torque wrench |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510836812.4A CN105269503A (en) | 2015-11-26 | 2015-11-26 | Concentric shaft counter-force arm hydraulic torque wrench |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105269503A true CN105269503A (en) | 2016-01-27 |
Family
ID=55139799
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510836812.4A Pending CN105269503A (en) | 2015-11-26 | 2015-11-26 | Concentric shaft counter-force arm hydraulic torque wrench |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105269503A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107756311A (en) * | 2017-11-08 | 2018-03-06 | 周子翘 | A kind of power of determining moment of torsion box spanner |
| CN114310765A (en) * | 2022-01-17 | 2022-04-12 | 国家能源集团新能源有限责任公司 | Hydraulic spanner |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4429597A (en) * | 1982-01-08 | 1984-02-07 | Consolidated Devices, Inc. | Hydraulic torque wrench |
| CN88100320A (en) * | 1987-01-20 | 1988-08-03 | 海德里·波维斯有限公司 | The improvement of torque wrench |
| US20040200320A1 (en) * | 2003-04-11 | 2004-10-14 | Brian Knopp | Hydraulic torque wrench system |
| CN100999070A (en) * | 2006-01-11 | 2007-07-18 | Jetyd公司 | Link attachment to torque wrench |
| CN101342689A (en) * | 2007-06-01 | 2009-01-14 | 约翰·K·琼克斯 | A fluid operated torque tool for and a method of tightening a nut on a plate on railroad crossings |
| CN203266535U (en) * | 2013-04-24 | 2013-11-06 | 国营东方仪器厂 | Coaxial counter force arm hydraulic torque spanner |
| CN205184628U (en) * | 2015-11-26 | 2016-04-27 | 申益 | Concentric shaft counter -force arm hydraulic torque spanner |
-
2015
- 2015-11-26 CN CN201510836812.4A patent/CN105269503A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4429597A (en) * | 1982-01-08 | 1984-02-07 | Consolidated Devices, Inc. | Hydraulic torque wrench |
| CN88100320A (en) * | 1987-01-20 | 1988-08-03 | 海德里·波维斯有限公司 | The improvement of torque wrench |
| US20040200320A1 (en) * | 2003-04-11 | 2004-10-14 | Brian Knopp | Hydraulic torque wrench system |
| CN100999070A (en) * | 2006-01-11 | 2007-07-18 | Jetyd公司 | Link attachment to torque wrench |
| CN101342689A (en) * | 2007-06-01 | 2009-01-14 | 约翰·K·琼克斯 | A fluid operated torque tool for and a method of tightening a nut on a plate on railroad crossings |
| CN203266535U (en) * | 2013-04-24 | 2013-11-06 | 国营东方仪器厂 | Coaxial counter force arm hydraulic torque spanner |
| CN205184628U (en) * | 2015-11-26 | 2016-04-27 | 申益 | Concentric shaft counter -force arm hydraulic torque spanner |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107756311A (en) * | 2017-11-08 | 2018-03-06 | 周子翘 | A kind of power of determining moment of torsion box spanner |
| CN114310765A (en) * | 2022-01-17 | 2022-04-12 | 国家能源集团新能源有限责任公司 | Hydraulic spanner |
| CN114310765B (en) * | 2022-01-17 | 2024-01-26 | 国家能源集团新能源有限责任公司 | Hydraulic spanner |
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| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20160127 |