CN212133973U - Two-end driving type torque wrench calibrating device - Google Patents

Abstract

The invention discloses a two-end driving type torque wrench calibrating device, which relates to the field of calibrating instruments and comprises a rack, wherein a driving arm and a base are arranged on the rack, a torque sensor is arranged in the base and is connected with a joint matched with a torque wrench through a transmission shaft, the transmission shaft is rotatably arranged on the base, a torque output mechanism is matched with the transmission shaft, a loading arm is used for clamping and driving one end of the torque wrench to rotate around the joint, the driving arm and the torque output mechanism are respectively arranged at the positions where the two ends of the torque wrench are matched with the calibrating device, one end of a holding part can be acted by the driving arm and can generate rotating torque relative to the other end to meet the measurement requirement, one end of the matching part of the torque wrench can be acted by the torque output mechanism to directly apply torque to a measuring part of the torque wrench so as to generate rotating torque, the effect that the loading can be driven from the two ends of the torque wrench for verification is achieved.

Description

Two-end driving type torque wrench calibrating device

Technical Field

The disclosure relates to the field of calibrating instruments, in particular to a two-end driving type torque wrench calibrating device.

Background

The statements in this section merely provide background information related to the present disclosure and may not necessarily constitute prior art.

The torque wrench is a common bolt fastening tool, especially fastening of high-strength bolts generally needs to be firstly tightened and then tightened, and each step needs to have strict torque requirements, so that the torque wrench can be used for monitoring the bolt fastening process in real time, and torque is conveniently applied in the fastening process.

Along with the prolonging of the service time of the torque wrench, or the collision, the irregular operation and the like during the service period, the precision of the internal torque measuring structure is gradually reduced, so that errors occur when torque is applied in the service process, and the torque wrench is required to be calibrated by using a torque wrench calibrator; when the torque wrenches with different specifications are checked, calibrating devices with different measuring ranges and precision are selected according to the specifications of the torque wrenches.

The inventor finds that at present, the problem that the torque wrench is difficult to load still exists, the torque wrench is placed in the calibrating device, when the torque wrench is held and applied with torque to drive the torque wrench to rotate around the other end, the position of the torque wrench changes, the change of the whole gravity center of the torque wrench and the calibrating device can be caused, particularly, for the torque wrench with large volume and large weight, when the torque wrench is matched with a small-size rack with a telescopic structure, the rack is easy to incline due to the deviation of the torque wrench, the torque wrench cannot be loaded in a stable horizontal state, the loading force of the torque wrench has errors, and the accuracy requirement in the torque wrench calibrating process is difficult to meet.

SUMMERY OF THE UTILITY MODEL

The utility model discloses a defect to prior art exists is directed against, a both ends drive formula torque wrench calibrating installation is provided, position at torque wrench both ends cooperation calibrating installation, set up actuating arm and torque output mechanism respectively, portion one end of gripping can receive the effect of actuating arm, produce the rotation torque for the other end, satisfy the measurement demand, torque wrench cooperation portion one end can receive torque output mechanism's effect, directly apply the moment of torsion to the measuring part of torque wrench, make it produce the rotation torque for portion one end of gripping, satisfy the measurement demand, reach and all can drive the loading from torque wrench both ends and carry out the effect of examining and determine.

In order to realize the purpose, the following technical scheme is adopted:

the utility model provides a both ends drive formula torque wrench calibrating installation, includes the frame, is equipped with actuating arm and base in the frame, has arranged torque sensor in the base, and torque sensor is connected with the joint of cooperation torque wrench through the transmission shaft, and the transmission shaft rotates and installs on the base, and torque output mechanism and transmission shaft cooperation, loading arm are used for the centre gripping and drive torque wrench one end around the joint rotate.

Furthermore, the torque output mechanism comprises a servo motor and a transmission mechanism, wherein the servo motor drives the transmission shaft to rotate around the axis through the transmission mechanism, and the transmission shaft is used for driving the joint and the measuring end of the torque sensor to synchronously rotate.

Further, the torque sensor has a plurality of different specifications for replacement installation in the base and cooperation with the transmission shaft.

Furthermore, the loading arm comprises a multi-stage telescopic mechanism which is slidably mounted on the rack and a loading mechanism which is mounted on the multi-stage telescopic mechanism, and the multi-stage telescopic mechanism drives the loading mechanism to move along the rack to change the distance between the loading mechanism and the torque sensor.

Further, multistage telescopic machanism includes the polylith superimposed panel in proper order, connects through the sliding pair between the adjacent panel, changes the relative position between the panel through sliding and realizes extension and shortening.

Further, in the multiple plates are sequentially stacked, the first plate is connected with the rack, the last plate is matched with the loading mechanism, and the distance between the loading mechanism and the joint is adjusted through relative sliding between the plates.

Furthermore, the loading mechanism comprises a connecting plate and a loading plate, one side of the connecting plate is connected with the multi-stage telescopic mechanism, the other side of the connecting plate is in sliding fit with the loading plate, a pair of stop columns which are arranged at intervals are matched on the loading plate, and a torque wrench is accommodated between the stop columns.

Furthermore, the catch post is respectively matched with a bearing, the bearing is used for rotating around the axis of the catch post and moving along the axis direction of the catch post, and the outer ring of the bearing is used for contacting and abutting against the torque wrench.

Furthermore, the connecting plate is in sliding connection with the loading plate through a sliding groove and a sliding block which are matched with each other, the loading plate is matched with a driving mechanism, and the driving mechanism drives the loading plate and the blocking columns on the loading plate to move along the sliding groove.

And the display instrument is electrically connected with the torque sensor and is used for displaying the torque value measured by the torque sensor in real time.

Compared with the prior art, the utility model has the advantages and positive effects that:

(1) the multi-stage telescopic mechanism is matched with the loading mechanism, so that the calibrating device can adapt to torque wrenches with different lengths of grab handles, the length of the multi-stage telescopic mechanism is extended for a torque wrench with a longer grab handle, the position of the loading mechanism is adjusted to adapt to the length of the grab handle of the torque wrench, and similarly, for a torque wrench with a small size, the grab handle is shorter, and the length of the multi-stage telescopic mechanism is shortened to adapt to a shorter grab handle, so that the calibrating device can adapt to torque wrenches with grab handles with different lengths;

(2) a torque sensor is matched in a base at one end of the rack, the torque sensor is connected with a joint through a transmission shaft, and the transmission shaft is driven to rotate by a torque output mechanism, so that the joint and the torque sensor are driven to generate relative torque, one end of a holding part of a torque wrench does not need to be rotated, the center of gravity of the whole calibrating device is unchanged, and the stability of the device in the whole calibrating process is ensured;

(3) the loading mechanism is provided with the blocking column and the bearing, the bearing can rotate and slide, the rotation can be utilized to ensure that the thrust can be continuously and stably applied to the torque wrench grab handle, the bearing can realize the height adjustment along the axial sliding of the blocking column, and the loading mechanism is adjusted to the force application point of the torque wrench, so that the loading mechanism is suitable for different thicknesses of torque wrenches with different volumes and different specifications, and the grab handles of the torque wrenches at different horizontal heights are ensured to realize stable stress.

Drawings

The accompanying drawings, which are included to provide a further understanding of the disclosure, illustrate embodiments of the disclosure and together with the description serve to explain the disclosure and are not to limit the disclosure.

Fig. 1 is a schematic view of the overall structure of an assay device in example 1 of the present disclosure;

fig. 2 is a schematic structural diagram after the position of the loading mechanism is adjusted in embodiment 1 of the present disclosure;

fig. 3 is a schematic top view of the assay device in example 1 of the present disclosure;

fig. 4 is a schematic structural view of a bearing after the axial position of the bearing along a bumping post is adjusted in embodiment 1 of the disclosure;

fig. 5 is a schematic top view of the loading mechanism in embodiment 1 of the present disclosure after adjusting the position.

In the figure, 1-a frame, 2-a first plate, 3-a second plate, 4-a connecting plate, 5-a loading plate, 6-a retaining column, 7-a bearing, 8-a base, 9-a torque sensor, 10-a transmission shaft, 11-a torque wrench, 12-a support, 13-a joint and 14-a torque output mechanism.

Detailed Description

It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the disclosure. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this disclosure belongs.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present disclosure. As used herein, the singular forms "a", "an", and/or "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof;

for convenience of description, the words "up", "down", "left" and "right" in this disclosure, if any, merely indicate that the directions of movement are consistent with those of the figures themselves, and are not limiting in structure, but merely facilitate the description of the invention and simplify the description, rather than indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present disclosure.

As described in the background art, in the prior art, when a large-size and heavy-weight torque wrench is matched with a small-size rack with a telescopic structure, the rack is prone to tilt due to the deviation of the torque wrench, and the torque wrench cannot be loaded in a stable horizontal state.

Example 1

In an exemplary embodiment of the present disclosure, as shown in fig. 1 to 5, a two-end drive type torque wrench calibrating apparatus is provided.

Mainly include frame 1, loading arm and torque sensor 9, loading arm and torque sensor install respectively in the frame, and torque sensor has the joint 13 through the transmission shaft cooperation, and the joint can dock with the 11 cooperations of moment of torsion spanner, and torque sensor surveys the moment of exerting of moment of torsion spanner through the joint, and the loading arm cooperates with the grab handle of moment of torsion spanner, exerts thrust to the moment of torsion spanner, drives the moment of torsion spanner and rotates around the axis that connects, the actual working process of simulation moment of torsion spanner.

In order to ensure the stability of the torque wrench in the loading process, the torque sensor is connected with a joint matched with the torque wrench through a transmission shaft, the transmission shaft is rotatably arranged on the base, the torque output mechanism is matched with the transmission shaft, and the loading arm is used for clamping and driving one end of the torque wrench to rotate around the joint;

the portion one end of gripping can receive the effect of actuating arm, produces the rotation torque for the other end, satisfies the measurement demand, and torque wrench cooperation portion one end can receive torque output mechanism's effect, directly exerts the moment of torsion to the measuring part of torque wrench, makes it produce the rotation torque for the portion one end of gripping, satisfies the measurement demand, reaches the effect that can drive the loading from torque wrench both ends homoenergetic and carry out examination.

In this embodiment, the torque output mechanism includes a servo motor and a transmission mechanism, and the servo motor drives the transmission shaft to rotate around the axis through the transmission mechanism, so as to drive the joint and the measuring end of the torque sensor to rotate synchronously;

the servo motor can be an imported Mitsubishi servo motor, so that sufficient output and stability in the output process are ensured;

the transmission shaft can be a shaft part with connecting structures at two ends, and the middle part of the transmission shaft is arranged on the base through a bearing and can rotate relative to the axis; of course, other connection modes can be selected, for example, a mode of matching a plurality of bearings is adopted, and the axial stability and the radial stability of the bearing are further improved;

the torque sensors are provided with a plurality of different specifications and are used for being installed in the base in a replacement mode and matched with the transmission shaft; the torque sensor with a large range specification can be suitable for detecting a torque wrench with a large specification, but the relative error is large, or the torque sensor with a small range can be selected, so that the torque sensor is suitable for detecting a torque wrench with a small specification and has high precision; matching according to the measuring range and precision of the torque wrench to be calibrated, installing a proper torque sensor in the base, and matching the measuring end with the transmission shaft;

it can be understood that when different torque wrenches are replaced, the corresponding torque sensor can be replaced, and a torque sensor suitable for the verification of a new torque wrench is selected;

in addition, in order to ensure the installation stability of the torque sensor, a support can be arranged in the base, and the auxiliary torque sensor is installed in the base to keep the stability of the auxiliary torque sensor in operation, so that the accuracy of the auxiliary torque sensor is ensured.

The torque sensor passes through the transmission shaft attach fitting, utilizes torque output mechanism to drive the transmission shaft and rotates to drive joint and torque sensor and produce relative moment of torsion, need not to rotate the portion of gripping one end of torque wrench, the holistic focus of calibrating installation does not have the change, guarantees the stability at whole verification in-process device.

The joint can be in a hexagon bolt-shaped structure and is used for matching with a hexagon bolt torque wrench, and can also be in an inner hexagon structure and is used for matching with a hexagon torque wrench; certainly, when the joint is configured, corresponding setting is performed according to the matching structure of the end part of the detected torque wrench, and the method is not limited to the above forms, and when the joint is actually configured, corresponding configuration is performed, which is not described herein again;

the loading arm comprises a multi-stage telescopic mechanism and a loading mechanism, the multi-stage telescopic mechanism drives the loading mechanism to move through telescoping, the distance between the loading mechanism and the torque sensor is changed, and the loading structure is matched with the torque wrench to apply thrust to the torque wrench;

in the embodiment, the torque wrench is arranged on the loading arm, one end of the torque wrench is matched with the joint to be used as a measuring point, and the height of the loading arm is adjusted to the greatest degree, so that the torque wrench is in a horizontal state; and adjusting the position of the loading mechanism so as to adjust the stress action point of the torque wrench in the verification process, and after the verification mode is determined, rapidly moving the loading mechanism to the thrust point position through the telescopic action of the multi-stage telescopic mechanism.

Specifically, in this embodiment, the multi-stage telescoping mechanism includes a plurality of sequentially stacked plates, adjacent plates are connected by a sliding pair, and the relative positions of the plates are changed by sliding to realize extension and contraction;

sequentially stacking a plurality of plates, wherein the first plate is connected with the rack, the last plate is matched with the loading mechanism, and the distance between the loading mechanism and the joint is adjusted through relative sliding between the plates;

as shown in fig. 1, taking two plates as an example, a first plate 2 is matched with a frame, a second plate 3 is matched with the first plate through a sliding pair, the telescopic process is completed through sliding relative to the first plate, and a loading mechanism is arranged on the second plate so as to adjust the position of the loading mechanism relative to a torque sensor;

of course, it can be understood that the number of the plate members can be increased according to the requirement to obtain a larger expansion range, so that the change of the whole length of the torque wrench in a larger range is adapted;

to the selection of sliding pair, in this embodiment, chooseed screw and rectangular form spout complex form for use, can retrain its removal orbit on the one hand, on the other hand, can also guarantee the inseparable laminating between the adjacent plate through the fixed action of screw, guarantees its transmission precision, avoids rocking.

Through setting up multistage telescopic machanism cooperation loading mechanism, can adapt to the moment of torsion spanner of different length grab handles, to the longer moment of torsion spanner of grab handle, the length of extension multistage telescopic machanism, adjustment loading mechanism position adaptation moment of torsion spanner grab handle length, with the principle to the moment of torsion spanner of small size, its grab handle is shorter, through the length that shortens multistage telescopic machanism, adapts to shorter grab handle to make calibrating installation can adapt to the moment of torsion spanner of the different length grab handles of cooperation.

Through the change of relative position between the plate, can adapt to the torque spanner of different specifications to use, different torque spanner have different length, and its thrust point position also can change at the verification in-process, consequently, the change that utilizes the loading mechanism position changes the change of thrust point position for loading mechanism can thrust point position change's demand, improves its suitability to different specification torque spanner verification demands.

The loading mechanism comprises a connecting plate 4 and a loading plate 5, one side of the connecting plate is connected with the multi-stage telescopic mechanism, the other side of the connecting plate is in sliding fit with the loading plate, a pair of stop columns 6 which are arranged at intervals are matched on the loading plate, and a torque wrench is accommodated between the stop columns;

the connecting plate is connected with the loading plate in a sliding mode through a sliding groove and a sliding block which are matched with each other, the loading plate is matched with a driving mechanism, and the driving mechanism drives the loading plate and the bumping columns on the loading plate to move along the sliding groove;

specifically, in this embodiment, the connecting plate serves as an element that cooperates with the multi-stage telescopic mechanism, and it may also cooperate with the second plate via a sliding pair, so as to further increase the telescopic length of the multi-stage telescopic mechanism in the telescopic direction thereof, and in addition, the connecting plate also serves as a base element of the loading mechanism;

the connecting plate is in sliding fit with the loading plate and slides under the action of the driving mechanism, so that thrust is applied to the torque wrench handle through the stop column, the moving path of the torque wrench handle can be constrained by the matching of the sliding chute and the sliding block, and the transmission stability of the torque wrench handle can be ensured;

of course, it can be understood that the matching of the sliding groove and the sliding block can adopt a matching mode of a dovetail groove and a trapezoidal sliding block, so that the transmission stability can be further improved, and the constraint force of the dovetail groove can be fully utilized;

for the selection of the driving mechanism, an inlet servo motor can be selected to be matched with a lead screw slider for transmission, the movement of the loading plate is driven by the movement of the slider, other modes such as a worm and gear mechanism and the like can also be selected, and the type of the required driving mechanism can be selected according to the field requirements.

It should be particularly pointed out that the retaining columns are respectively matched with bearings 7, the bearings are used for rotating around the axis of the retaining column and moving along the axis direction of the retaining column, and the outer rings of the bearings are used for contacting and abutting against the torque wrenches;

the loading mechanism is provided with a stop post and a bearing, the bearing can rotate and slide, the rotation can ensure that the thrust can be continuously and stably applied to the torque wrench grab handle, the bearing can realize the height adjustment along the axial sliding of the stop post, the force application point of the loading mechanism to the torque wrench is adjusted, thereby being suitable for different stations with different heights,

for example, in the verification process of the first torque wrench, the second torque wrench and the third torque wrench, the height of the handle corresponding to the torque wrench is increased along with the increase of the height of the working position of the torque wrench, and the sliding bearing can be positioned at the position contacting the torque wrench by the axial sliding bearing, so that the grip of the torque wrench at different working positions can realize stable stress;

the applicability of the calibration process is improved, and the change of the position of the force application point of the loading mechanism is stably transited by the rotation of the bearing in the moving process, so that the external interference is reduced.

For the loading direction, the multistage telescopic mechanism drives the loading mechanism to move in a direction perpendicular to the axial direction of the joint; the motion trail direction of the loading mechanism is coplanar and vertical to the moving direction of the loading mechanism driven by the multi-stage telescopic mechanism;

as shown in fig. 1-5, taking the embodiment as an example, the telescopic direction of the multi-stage telescopic mechanism is horizontal left and right direction, the loading direction of the loading mechanism is horizontal front and back direction, and the rotation axis of the joint under the action of the torque wrench is vertical direction, so that smooth transmission measurement can be realized;

of course, it can be understood that joints of various specifications have tenons of different specifications, connection can be directly replaced without additionally arranging and increasing the height of the joint, and the joint position can realize rotation within a certain angle range, and the angle range is determined according to the angle rotation amplitude required by measurement.

In addition, in order to read the torque value measured by the torque sensor conveniently, a display instrument is also configured, and the display instrument is electrically connected with the torque sensor and is used for displaying the torque value measured by the torque sensor in real time;

when the torque wrench is used, the value of the torque sensor acquired by the display instrument is compared with the torque value displayed on the torque wrench body, so that the torque wrench can be calibrated.

The above description is only a preferred embodiment of the present disclosure and is not intended to limit the present disclosure, and various modifications and changes may be made to the present disclosure by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present disclosure should be included in the protection scope of the present disclosure.

Claims (10)

1. The utility model provides a both ends drive formula torque wrench calibrating installation, its characterized in that, includes the frame, is equipped with actuating arm and base in the frame, has arranged torque sensor in the base, and torque sensor is connected with the joint of cooperation torque wrench through the transmission shaft, and the transmission shaft rotates and installs on the base, and torque output mechanism and transmission shaft cooperation, loading arm are used for the centre gripping and drive torque wrench one end around the joint rotate.

2. The dual end drive torque wrench calibrating device as claimed in claim 1, wherein the torque output mechanism comprises a servomotor and a transmission mechanism, the servomotor drives the transmission shaft to rotate around an axis through the transmission mechanism, for driving the joint and the measuring end of the torque sensor to rotate synchronously.

3. The dual end drive torque wrench calibration device as claimed in claim 1 or 2, wherein the torque sensor has a plurality of different specifications for replacement mounting in the base and engagement with the drive shaft.

4. The dual-end drive type torque wrench calibrating device as claimed in claim 1, wherein the loading arm comprises a multi-stage telescoping mechanism slidably mounted on the frame and a loading mechanism mounted on the multi-stage telescoping mechanism, the multi-stage telescoping mechanism driving the loading mechanism to move along the frame to change the distance between the loading mechanism and the torque sensor.

5. The dual-end driving torque wrench calibrating device as claimed in claim 4, wherein the multi-stage telescopic mechanism comprises a plurality of sequentially stacked plates, adjacent plates are connected by a sliding pair, and the relative positions of the plates are changed by sliding to realize extension and contraction.

6. The apparatus for calibrating a double-end-driven torque wrench as claimed in claim 5, wherein a plurality of plates are sequentially stacked, a first plate is connected to the frame, and a last plate is engaged with the loading mechanism, and the distance between the loading mechanism and the joint is adjusted by relative sliding between the plates.

7. The two-end driving type torque wrench calibrating device according to claim 4, 5 or 6, wherein the loading mechanism comprises a connecting plate and a loading plate, one side of the connecting plate is connected with the multi-stage telescopic mechanism, the other side of the connecting plate is in sliding fit with the loading plate, a pair of blocking columns which are arranged at intervals are matched on the loading plate, and the torque wrench is accommodated between the blocking columns.

8. The apparatus for calibrating a double-end-driven torque wrench as claimed in claim 7, wherein the stop pillar is respectively fitted with bearings for rotating around the axis of the stop pillar and moving along the axis of the stop pillar, and the outer ring of the bearing is adapted to contact and press the torque wrench.

9. The dual-end driving type torque wrench calibrating device as claimed in claim 8, wherein the connecting plate is slidably connected to the loading plate through a sliding slot and a sliding block which are matched with each other, and the loading plate is matched with a driving mechanism which drives the loading plate and the stop pillar thereon to move along the sliding slot.

10. The dual end drive type calibrating device for the torque wrench as claimed in claim 1, further comprising a display instrument electrically connected to the torque sensor for displaying the torque value measured by the torque sensor in real time.

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