CN201079942Y

CN201079942Y - Hydraulic type number torque spanner

Info

Publication number: CN201079942Y
Application number: CNU2007201389826U
Authority: CN
Inventors: 陈柏辉
Original assignee: Individual
Current assignee: Individual
Priority date: 2007-08-30
Filing date: 2007-08-30
Publication date: 2008-07-02
Anticipated expiration: 2017-08-30

Abstract

The utility model relates to a hydraulic digital torque spanner, which comprises a head section and a handle section. The head section comprises a working end and a combining end, at both sides of the combining end, a first pivot and a second pivot are fixedly arranged respectively, a first hollow part and a second hollow part are concavely arranged at both sides of the end surface of the combining end respectively, the first pivot extends into the first hollow part, and the second pivot extends into the second hollow part; the handle section comprises a pivoting end and a long column shaped holding part, the pivoting end is pivoted on the first pivot of the head section, and a gap is reserved between the pivoting end and the second pivot of the head section, a hydraulic cylinder is fixedly arranged at the pivoting end and corresponding to the second pivot of the head section, the end of the hydraulic cylinder directed at the head section is pivoted at one end of a connecting rod, the other end of the connecting rod is pivoted on the second pivot of the head section, the other end of the hydraulic cylinder is connected with a pressure sensor, the pressure transmitter is electrically connected with a torsion transforming display, the torsion transforming display comprises a display screen exposed on the surface of the handle section, and is electrically connected with a battery, thereby, accurate torsion measurement can be achieved by the utility model.

Description

The hydraulic type digital torsion spanner

Technical field

The present invention refers to a kind of hydraulic type digital torsion wrench especially about a kind of hand-held tool, and it can improve the degree of accuracy that torsion is measured.

Background technology

When existing digital torsion wrench is measured torsion, the mode that links combination mostly by strain assembly such as strain gauge etc. and pad body, when making hand-held tool cause the distortion of handle body bearing torsion, the strain assembly also is out of shape the variation that has a resistance with the handle body, by measuring the torsion that this resistance variations promptly can be exchanged into hand-held tool and born, and then reach and show or the function of caution torque value.

Yet, because existing digital torsion wrench is in manufacture process, its raw material steel often carry out different heat treatment at different hand-held tool characteristics, cause the hardness of hand-held tool to differ, and the material thickness degree of various hand-held tool is also different, and the variation of the circumstance of temperature difference when hand-held tool uses also is difficult to control, and this can produce accuracy error when all causing hand-held tool to measure torsion.Because existing its degree of accuracy of digital torsion wrench still has some deficits, therefore become the instrument of daily use of general user or DIY more, can't become the high accuracy instrument that specialty is used, also cause the applicable scope of existing digital torsion wrench to be restricted.

The utility model content

In view of existing its degree of accuracy of digital torsion wrench still has some deficits, the object of the present invention is to provide a kind of hydraulic type digital torsion spanner, the degree of accuracy when it can improve the torsion measurement, and then the range of application of expansion torsion wrench.

For reaching the above object, hydraulic type digital torsion spanner of the present invention comprises:

A kind of hydraulic type digital torsion spanner, it comprises:

A section, this section comprises a working end and a binding end, these binding end both sides are installed with one first pivot and one second this section of pivot respectively, the end face both sides of this binding end are concaved with one first cavern part and one second cavern part respectively, first pivot extends in first cavern part, and second pivot extends in second cavern part; And

One handle section, this handle section comprises a pivot end and a grip part, this grip part is a long column shape, this pivot end is hubbed on first pivot of head section, and leave the space between second pivot of this pivot end and head section, this pivot end is installed with a hydraulic cylinder corresponding to this section second pivot place, this hydraulic cylinder is hubbed at an end of a connecting rod towards an end of head section, the other end of this connecting rod is hubbed on second pivot of this section, the other end of hydraulic cylinder is connected with a pressure sensor, pressure sensor and a torsion crossover display terminal electrically connect, and this torsion crossover display terminal includes a display screen that is exposed to the handle section surface, this torsion crossover display terminal and battery electric connection.

Preferably, one side of this handle section pivot end convexes with the sheet that is pivoted, this sheet that is pivoted is hubbed on first pivot of this section, the opposite side of this pivot end is provided with a side of second pivot corresponding to this section, the end face of this side is concaved with a storage tank, and this hydraulic cylinder and pressure sensor are fixedly arranged in this storage tank.

Preferably, this torsion crossover display terminal and battery are arranged at the handle intersegmental part.

Preferably, the direction that the end face of this section binding end extends with respect to the head section is inclination, and the direction that the end face of this handle section pivot end extends with respect to the handle section is inclination.

The accessible concrete effect of the utility model comprises:

1. because the utility model is not to utilize the resistance variations that distortion caused of hand-held tool itself to measure torsion, but the pressure that utilizes hydraulic cylinder changes and measures torsion, therefore have the advantage that is difficult for causing because of material hardness thickness difference and variation of ambient temperature the torsion measure error, therefore torsion measurement of the present utility model has the characteristic of high accuracy.

2. because the utility model can carry out the torsion of high accuracy measures, the DIY that therefore not only can be applicable to general user uses, and also can occupy a tiny space more applicable to the application of specialty, even in the test range of application of the high degree of accuracy of needs.

Description of drawings

Fig. 1 is the schematic perspective view of the utility model preferred embodiment.

Fig. 2 is the schematic top plan view of the utility model preferred embodiment.

Generalized section when Fig. 3 pivots the correct mutually section of handle section for the utility model preferred embodiment.

Fig. 4 is the schematic perspective view of another preferred embodiment of the utility model.

[primary clustering symbol description]

(10) head section (11) working end

(12) binding end (121) first pivots

(122) second pivots (123) first cavern parts

(20) handle section (21) pivot end

(22) grip part (23) hydraulic cylinder

(24) connecting rod (25) pressure sensor

(26) torsion crossover display terminal

(27) battery (28) sheet that is pivoted

(29) storage tank

The specific embodiment

Please refer to Fig. 1 and shown in Figure 2, preferred embodiment of the present utility model comprises that a section 10 and is hubbed at the handle section 20 of head section 10, wherein;

This section 10 comprises a working end 11 and a binding end 12, and this working end 11 can be socketed on the fixture of nut or screw etc., and with the rotary lock fixture, these binding end 12 both sides are installed with one first pivot 121 and one second pivot 122 respectively; Preferably, the direction that the end face of this binding end 12 extends with respect to head section 10 is inclination, so that 20 spaces that have mutual pivot of this section 10 and handle section, the end face both sides of this binding end 12 are concaved with one first cavern part 123 and one second cavern part 124 respectively, first pivot 121 extends in first cavern part 123, and second pivot 122 extends in second cavern part 124;

This handle section 20 comprises a pivot end 21 and a long column shape grip part 22, this pivot end 21 is hubbed on first pivot 121 of

head section

10, and 122 on second pivot of this pivot end 21 and head section 10 leaves the space, and handle section 20 can be pivoted with respect to head section 10, this pivot end 21 is installed with a hydraulic cylinder 23 corresponding to these section 10 second pivots 122 places, this hydraulic cylinder 23 is hubbed at an end of a connecting rod 24 towards an end of head section 10, the other end of this connecting rod 24 is hubbed on second pivot 122 of this section 10, pivot with respect to head section 10 and make hydraulic cylinder 23 when head section 10 moves when handle section 20 by this, connecting rod 24 applies pressure to the liquid in the hydraulic cylinder 23, the other end of hydraulic cylinder 23 is connected with a pressure sensor 25, and but the pressure in the sensing hydraulic cylinder 23 changes, a pressure sensor 25 and a torsion crossover display terminal 26 electrically connect, and the pressure that pressure sensor 25 can be sensed variation is sent in the torsion crossover display terminal 26 and is converted to torsion numerical value, this torsion crossover display terminal 26 includes a display screen that is exposed to handle section 20 surfaces, and torsion numerical value can be shown for user's reference, a this torsion crossover display terminal 26 and a battery 27 electrically connect, and can provide these torsion crossover display terminal 26 runnings required electric power;

Preferably, the direction that the end face of this pivot end 21 extends with respect to handle section 20 is inclination, one side of this pivot end 21 convexes with the sheet 28 that is pivoted, this sheet 28 that is pivoted is hubbed on first pivot 121 of this section 10, the opposite side of this pivot end 21 is provided with a side of second pivot 122 corresponding to this section 10, the end face of this side is concaved with a storage tank 29, this hydraulic cylinder 23 is fixedly arranged in this storage tank 29 with pressure sensor 25, this torsion crossover display terminal 26 is arranged at handle section 20 inside with battery 27, these torsion crossover display terminal 26 predeterminable torsion upper limits, when torsion that preferred embodiment of the present utility model applied surpasses on this torsion in limited time, this torsion crossover display terminal 26 can send warning signal as the sound or cresset etc., applies excessive torsion on fixture and damage fixture to avoid the user.

Please with further reference to shown in Figure 3, when preferred embodiment of the present utility model is used, the working end 11 of head section 10 can be socketed on the fixture, and long column shape grip part 22 application of forces rotation of grab handle section 20, the long column shape appearance of this grip part 22 can make the easier application of force of preferred embodiment of the present utility model, this moment, handle section 20 was promptly with respect to head section 10 pivots, and order about connecting rod 24 and apply pressure to liquid in the hydraulic cylinder 23, after pressure sensor 25 senses the hydraulic pressure variation of hydraulic cylinder 23, be about to signal and be sent to torsion crossover display terminal 26, and torsion numerical value is shown in display screen, this moment, the user can learn the torsion numerical value that puts on the fixture easily.

Because preferred embodiment of the present utility model is not to utilize the distortion of hand-held tool itself to measure torsion, but the pressure that utilizes hydraulic cylinder 23 changes and measures torsion, therefore has the advantage that is difficult for causing the torsion measure error because of material hardness thickness difference and variation of ambient temperature, therefore the torsion measurement of preferred embodiment of the present utility model has the characteristic of high accuracy, applicable to the application of specialty, even also can occupy a tiny space in the test range of application of the high degree of accuracy of needs.

Please with further reference to shown in Figure 4, preferred embodiment of the present utility model can be applicable to the design of various hand-held tool, working end 11 as head 10 is a ratchet spanner, in another preferred embodiment, the working end 11 of head 10A is general hand-held tool of spanner and free-standing and replaceable attachment head etc. also, everyly be used to lock fixture and to need to measure the instrument of torque value all applicable, be not limited to the described scope of preferred embodiment of the present utility model.

Claims

1. a hydraulic type digital torsion spanner is characterised in that, comprising:

A section, this section comprises a working end and a binding end, these binding end both sides are installed with one first pivot and one second this section of pivot respectively, the end face both sides of this binding end are concaved with one first cavern part and one second cavern part respectively, first pivot extends in first cavern part, and second pivot extends in second cavern part;

And

2. hydraulic type digital torsion spanner as claimed in claim 1, be characterised in that, one side of this handle section pivot end convexes with the sheet that is pivoted, this sheet that is pivoted is hubbed on first pivot of this section, the opposite side of this pivot end is provided with a side of second pivot corresponding to this section, the end face of this side is concaved with a storage tank, and this hydraulic cylinder and pressure sensor are fixedly arranged in this storage tank.

3. hydraulic type digital torsion spanner as claimed in claim 2 is characterised in that, this torsion crossover display terminal and battery are arranged at the handle intersegmental part.

4. as the described hydraulic type digital torsion spanner of claim 1,2 or 3, be characterised in that the direction that the end face of this section binding end extends with respect to the head section is inclination, the direction that the end face of this handle section pivot end extends with respect to the handle section is inclination.