CN211452698U

CN211452698U - Ratchet type reversing adapter

Info

Publication number: CN211452698U
Application number: CN201922402398.2U
Authority: CN
Inventors: 宋亮; 韩睿; 徐峰; 李华栋; 严军辉
Original assignee: Avic Shaanxi Dongfang Aviation Instrument Co ltd
Current assignee: Avic Shaanxi Dongfang Aviation Instrument Co ltd
Priority date: 2019-12-27
Filing date: 2019-12-27
Publication date: 2020-09-08
Anticipated expiration: 2029-12-27

Abstract

A ratchet wheel type reversing adapter comprises a shell provided with a plug-in interface and a plug-in connector, wherein a ratchet wheel is arranged in a cavity in the shell and is connected with the shell through a bearing, and the plug-in interface is arranged at the axis position of the ratchet wheel; a reversing shaft perpendicular to the ratchet wheel is arranged on the shell in a penetrating mode, and two ends of the reversing shaft respectively extend out of the shell and are in clearance fit with the shell; a section of flat groove is formed in the reversing shaft, a gap is reserved between the flat groove and the ratchet wheel, a group of reversing teeth are respectively arranged at two ends of the flat groove, and the reversing shaft moves left and right in the shell to enable the corresponding reversing teeth to be meshed with the ratchet wheel; two limiting grooves are arranged on the shaft lever of the reversing shaft in the shell side by side along the axis; the jacking mechanism in the shell is vertically propped against the limit groove of the reversing shaft. Because the ratchet mechanism is additionally arranged in the adapter, when the torque wrench is detected, no matter which angle the torque wrench is positioned, the wrench rod can be rapidly abutted against the counter-force arm only through the adjustment of the ratchet mechanism, and the detection efficiency of the torque wrench is effectively improved.

Description

Ratchet type reversing adapter

Technical Field

The utility model belongs to a moment of torsion detects auxiliary assembly, concretely relates to adapter with switching-over ratchet.

Background

The torque wrench needs to detect the torque to ensure the accuracy of the output torque. And the verification of torque wrenches is usually done by means of a torque verification instrument. During detection, the square tenon of the wrench head on the torque wrench 2 is required to be inserted into the sensor 1 on the detection instrument, and the wrench rod on the torque wrench 2 is required to be abutted against the reaction arm 3 on the detection instrument on the other hand, so that the torque detection can be started only when the two positioning conditions are met. However, when the square tenon of the torque wrench 2 is inserted into the sensor, there may be a distance between the wrench rod and the reaction arm 3 due to an improper insertion angle, as shown in fig. 1. For a ratchet wrench, this distance is eliminated by rotation of the ratchet mechanism. However, in a conventional adjustment method for a wrench without a ratchet mechanism, such as a hand wrench, the sensor is rotated by a large angle in a lost motion manner, so that the distance between the wrench rod and the reaction arm is eliminated and the two arms are kept against each other. The operation of rotating the sensor itself directly causes a reduction in detection efficiency.

Disclosure of Invention

An object of the utility model is to provide a ratchet formula switching-over adapter can make torque wrench pass through the ratchet on the adapter and eliminate the distance between wrench rod and the counter-force arm fast to this detection efficiency who improves torque wrench.

The technical scheme for realizing the purpose is as follows: the utility model provides a ratchet formula switching-over adapter, includes the casing, and the axis position at both ends is equipped with interface and bayonet joint respectively about the casing, and the interface is used for pegging graft spanner head, and the bayonet joint is used for inserting sensor, its characterized in that: a cavity with the diameter larger than that of the ratchet wheel is arranged in the shell, the ratchet wheel is arranged in the cavity, two shaft ends of the ratchet wheel are respectively connected with two ends of the shell through bearings, and the insertion port penetrates through the end face of the shell and is arranged at the axis position of the ratchet wheel; a reversing shaft penetrates through the shell, the axis of the reversing shaft is perpendicular to the axis of the ratchet wheel, and two ends of the reversing shaft respectively extend out of the side wall of the shell and form clearance fit with the shell; a section of flat groove is formed in the shaft lever of the reversing shaft positioned in the shell, a gap is reserved between the flat groove and the tooth crest face of the ratchet wheel, a group of reversing teeth are respectively arranged at two ends of the flat groove, and the reversing shaft moves left and right in the shell to enable the corresponding reversing teeth to be meshed with the ratchet wheel; two limiting grooves are arranged on the shaft lever of the reversing shaft in the shell side by side along the axis; the shell is internally provided with a jacking mechanism which vertically offsets the reversing shaft, the jacking mechanism comprises a jacking screw, a spring and a steel ball, the jacking screw is screwed into the shell through a threaded hole, the front end of the jacking screw tightly jacks the steel ball in the limiting groove through the spring, and the steel ball falls into another limiting groove from one limiting groove along with the left-right movement of the reversing shaft.

Furthermore, the limiting grooves are V-shaped limiting grooves, the included angle of the V-shaped limiting grooves is 110-120 degrees, the depth of the V-shaped limiting grooves is equal to the radius of the steel ball, the tangent point of the outer side inclined planes of the two V-shaped limiting grooves and the steel ball is higher than the tangent point of the inner side inclined planes and the steel ball, and the top points of the inner side inclined planes of the two V-shaped limiting grooves are intersected.

Furthermore, the interface is a square hole.

Furthermore, the interface comprises two square holes, and two square holes share a axis, and the contained angle of two square hole diagonal lines is 45.

Furthermore, the shell comprises a cover body at the upper part and an input disc at the lower part, the cover body and the input disc are fixed through screws, an opening is formed in the center of the cover body and corresponds to the insertion port in the ratchet wheel, and the insertion head is arranged at the center of the input disc.

The utility model has the advantages that: because the ratchet mechanism with the reversing function is additionally arranged in the adapter, when the torque wrench is detected, no matter which angle the torque wrench is positioned, the wrench rod can be rapidly abutted against the counter-force arm only through the adjustment of the ratchet mechanism, the whole operation process is simple and rapid, and the detection efficiency of the torque wrench is effectively improved.

Drawings

FIG. 1 is a schematic illustration of a test of a prior art torque wrench;

fig. 2 is a front view of an embodiment of the present invention;

FIG. 3 is a top view of FIG. 2;

FIG. 4 is a cross-sectional view A-A of FIG. 2;

FIG. 5 is a longitudinal cross-sectional view of FIG. 2;

FIG. 6 is a longitudinal cross-sectional view of the ratchet mechanism of FIG. 2 after reversing;

fig. 7 is a perspective partial sectional view of the present invention.

In the figure: 1. the device comprises a sensor, 2, a torque wrench, 3, a reaction arm, 4, a shell, 4-1, a cover body, 4-2, an input disc, 5, a screw, 6, a socket, 7, a ratchet, 7-1, a ratchet, 8, a plug-in connector, 9, a jacking mechanism, 9-1, a jacking screw, 9-2, a spring, 9-3, a steel ball, 10, a reversing shaft, 10-1, a first limiting groove, 10-2, a second limiting groove, 10-3, a first reversing tooth, 10-4, a hollow groove, 10-5, a second reversing tooth, 11, a bearing, 12 and a shaft sleeve.

Detailed Description

The present invention will be further explained with reference to the accompanying drawings.

As shown in fig. 2, 3 and 7, a ratchet wheel type reversing adapter comprises a housing 4, wherein an insertion port 6 and an insertion head 8 are coaxially arranged at the upper end and the lower end of the housing 4, and a ratchet wheel 7, a reversing shaft 10 and a jacking mechanism 9 are arranged in the housing 4. The socket 6 is used for enabling the torque wrench head to be plugged on the adapter; the function of the plug 8 is to enable the adapter to be plugged onto the sensor 1.

The utility model discloses an emphasis increases reversible ratchet in the adapter, makes torque wrench under the condition of not applying the moment of torsion, changes the position of spanner pole as required to reach detectable state fast. The specific arrangement structure is as follows:

as shown in fig. 3 to 5, the housing 4 may be divided into an upper cover 4-1 and a lower input tray 4-2 for facilitating the installation of the ratchet 7. The cover body 4-1 and the input disc 4-2 are fixed by a screw 5, and a cavity capable of accommodating the ratchet wheel 7 is formed between the cover body and the input disc. The diameter of the cavity is greater than the diameter of the ratchet 7. Since the ratchet 7 is required to turn the wrench rod without applying torque, the wrench head of the torque wrench is directly connected with the ratchet 7. Therefore, the socket 6 is arranged at the axial center position of the ratchet 7. An opening is arranged at the center of the cover body 4-1 and corresponds to the inserting port 6 on the ratchet wheel 7. The plug 8 is arranged in the center of the input disc 4-2, and the plug 8 is generally a square falcon. As shown in FIG. 4, one axial end of the ratchet 7 is connected with the input disc 4-2 through a bearing 11, and the other axial end of the ratchet 7 is connected with the cover 4-1 through a shaft sleeve 12, so that the ratchet 7 can smoothly rotate in the shell 4.

The utility model discloses well socket 6 can set up to a square hole. As shown in fig. 7, the socket 6 may be provided as two square holes. Two square holes share a central axis, but the diagonal angle of the two square holes is 45 degrees. Therefore, the insertion angle of the torque wrench can be adjusted more flexibly.

As shown in fig. 5 and 7, a reversing shaft 10 is inserted through the cover 4-1. The axis of the reversing shaft 10 is perpendicular to the axis of the ratchet wheel 7. The reversing shaft 10 and the cover body 4-1 form clearance fit, so that the reversing shaft 10 can move left and right in the shell body 4 for adjustment. The two ends of the reversing shaft 10 respectively extend out of the side wall of the shell 4, so that the reversing operation is convenient. As shown in fig. 5 and 7, a section of flat groove 10-4 is formed on the shaft lever of the reversing shaft 10 located inside the housing 4, and a gap is left between the flat groove 10-4 and the tooth crest of the ratchet 7. The flat groove 10-4 does not cause any influence on the ratchet wheel 7 when moving left and right along with the reversing shaft 10. The parts for meshing the ratchet wheel 7 are reversing teeth positioned at two ends of the flat groove 10-4 and are divided into a first reversing tooth 10-3 and a second reversing tooth 10-5. According to the orientation in fig. 4, two limiting grooves are arranged on the shaft rod at the left side of the first engaging tooth side by side along the axis, and are divided into a first limiting groove 10-1 and a second limiting groove 10-2. The two limiting grooves are mutually symmetrical and are V-shaped limiting grooves. The included angle of the V-shaped limiting groove is 110-120 degrees, and the depth is equal to the radius of the steel ball 9-3. The tangent point of the outer side inclined planes of the two V-shaped limiting grooves and the steel ball 9-3 is higher than the tangent point of the inner side inclined planes and the steel ball 9-3. The vertexes of the inner side inclined planes of the two V-shaped limiting grooves are intersected. When the reversing shaft 10 moves rightwards, the first reversing tooth 10-3 is meshed with the ratchet 7-1 on the left side of the ratchet wheel 7; when the reversing shaft 10 moves leftwards, the second reversing tooth 10-5 is meshed with the ratchet 7-1 on the right side of the ratchet wheel 7. The positioning of the reversing shaft 10 after reversing is realized by the jacking mechanism 9. As shown in fig. 5, the tightening mechanism 9 is located in the housing 4 and vertically abuts against the reversing shaft 10. The jacking mechanism 9 comprises a jacking screw 9-1, a spring 9-2 and a steel ball 9-3. The jacking screw 9-1 is screwed into the shell 4 through a threaded hole. The front end of the jacking screw 9-1 jacks the steel ball 9-3 in the corresponding limit groove through the spring 9-2. The axis of the jacking screw 9-1 is vertical to the axis of the ratchet wheel 7. Along with the left and right movement of the reversing shaft 10, the steel ball 9-3 falls into the other limiting groove from one limiting groove.

The utility model discloses an in the theory of operation: as shown in figure 5, when the reversing shaft 10 is pushed to move rightwards, the left ratchet 7-1 of the ratchet wheel 7 is meshed with the first reversing tooth 10-3, and the steel ball 9-3 slides into the first limiting groove 10-1 and is pressed by the pressing screw 9-1 through the spring 9-2, at the moment, the ratchet wheel 7 can rotate clockwise, is locked anticlockwise, namely, torque is generated when rotating anticlockwise, and the ratchet wheel can slide clockwise. As shown in FIG. 6, when the reversing shaft 10 is pushed to move, the right-side ratchet 7-1 of the ratchet 7 is engaged with the second reversing tooth 10-5, and the steel ball 9-3 slides into the second limiting groove 10-2 and is pressed by the pressing screw 9-1 through the spring 9-2, at this time, the ratchet 7 can rotate counterclockwise and is locked clockwise, that is, when rotating clockwise, torque is generated, and when rotating counterclockwise, sliding occurs.

Combine torque wrench in adopting the utility model discloses operation at the moment of torsion testing in-process is further explained:

the socket 8 is inserted into the square hole of the torque wrench calibrator sensor 1 and the reversing shaft 10 is pushed to the right side, as shown in fig. 5. The steel ball 9-3 falls into the first limit groove 10-1, and the first reversing tooth 10-3 is occluded and clamped with the left ratchet 7-1 of the ratchet wheel 7. Limited by the outer slope, the ratchet wheel 7 cannot rotate counterclockwise at the moment, that is, can transmit torque in the counterclockwise direction. If a force is applied clockwise, the ratchet 7-1 pushes the reversing shaft 10 to move towards the left side, and the inner side inclined plane of the first limit groove 10-1 pushes the steel ball 9-3 to enable the spring 9-2 to move upwards. When one ratchet 7-1 rotates, the steel ball 9-3 pushes the reversing shaft 10 to move right through the inner side inclined plane under the action of the spring 9-2, and the steel ball 9-3 falls back into the first limiting groove 10-1. The ratchet 7 slips in the clockwise direction, i.e., the clockwise wrench lever adjusts the position between the torque and the reaction arm 3 without applying torque. When in reversing, the reversing rod is only pushed to the left side, so that the second reversing tooth 10-5 is occluded and clamped with the ratchet 7-1 on the right side of the ratchet wheel 7, and the steel ball 9-3 falls into the second limiting groove 10-2, and the working principle is consistent with the above.

The utility model provides a moment of torsion spanner examine time measuring, the distance is great between spanner pole and the counter-force arm 3, needs the problem of wide-angle idle stroke rotation sensor 1, has simplified the operation, has improved detection efficiency.

Claims

1. The utility model provides a ratchet formula switching-over adapter, includes the casing, and the axis position at both ends is equipped with interface and bayonet joint respectively about the casing, and the interface is used for pegging graft spanner head, and the bayonet joint is used for inserting sensor, its characterized in that: a cavity with the diameter larger than that of the ratchet wheel is arranged in the shell, the ratchet wheel is arranged in the cavity, two shaft ends of the ratchet wheel are respectively connected with two ends of the shell through bearings, and the insertion port penetrates through the end face of the shell and is arranged at the axis position of the ratchet wheel; a reversing shaft penetrates through the shell, the axis of the reversing shaft is perpendicular to the axis of the ratchet wheel, and two ends of the reversing shaft respectively extend out of the side wall of the shell and form clearance fit with the shell; a section of flat groove is formed in the shaft lever of the reversing shaft positioned in the shell, a gap is reserved between the flat groove and the tooth crest face of the ratchet wheel, a group of reversing teeth are respectively arranged at two ends of the flat groove, and the reversing shaft moves left and right in the shell to enable the corresponding reversing teeth to be meshed with the ratchet wheel; two limiting grooves are arranged on the shaft lever of the reversing shaft in the shell side by side along the axis; the shell is internally provided with a jacking mechanism which vertically offsets the reversing shaft, the jacking mechanism comprises a jacking screw, a spring and a steel ball, the jacking screw is screwed into the shell through a threaded hole, the front end of the jacking screw tightly jacks the steel ball in the limiting groove through the spring, and the steel ball falls into another limiting groove from one limiting groove along with the left-right movement of the reversing shaft.

2. A ratcheting reversing adapter as claimed in claim 1, wherein: the limiting grooves are V-shaped limiting grooves, the included angle of the V-shaped limiting grooves ranges from 110 degrees to 120 degrees, the depth of the V-shaped limiting grooves is equal to the radius of the steel ball, the tangent point of the outer side inclined planes of the two V-shaped limiting grooves and the steel ball is higher than the tangent point of the inner side inclined planes and the steel ball, and the top points of the inner side inclined planes of the two V-shaped limiting grooves are intersected.

3. A ratcheting reversing adapter as claimed in claim 1, wherein: the interface is a square hole.

4. A ratcheting reversing adapter as claimed in claim 1, wherein: the interface comprises two square holes, and two square holes share a axis, and the contained angle of two square hole diagonals is 45.

5. A ratcheting reversing adapter according to any one of claims 1 to 4, wherein: the shell comprises an upper cover body and a lower input disc, the cover body and the input disc are fixed through screws, an opening is formed in the center of the cover body and corresponds to a plug-in port in the ratchet wheel, and the plug-in connector is arranged in the center of the input disc.