CN212807429U

CN212807429U - Torque wrench angle limiting device for measuring wheel bolt tightness

Info

Publication number: CN212807429U
Application number: CN202022167310.6U
Authority: CN
Inventors: 王吉; 岳耀达; 陈德铁
Original assignee: FAW Volkswagen Automotive Co Ltd
Current assignee: FAW Volkswagen Automotive Co Ltd
Priority date: 2020-09-28
Filing date: 2020-09-28
Publication date: 2021-03-26
Anticipated expiration: 2030-09-28

Abstract

The utility model provides a torque wrench angle limiting device for measuring wheel bolt tightness, which comprises a fixed angle limiting clamp, wherein the fixed angle limiting clamp is provided with a bottom plate, a side wall and a limiting stop arm, and the bottom plate is provided with a first through hole matched with the appearance of a torque angle sensor; the first end of the side wall is surrounded or semi-surrounded by the bottom plate to be fixed, the second end of the side wall is provided with an axial opening and a radial opening, and the limiting blocking arm is connected to the side wall to form the end part of the radial opening. The limit position of the wrench during rotation can be limited by the limit stop arm. Adopt the utility model discloses a when the device was measured, the stroke of moment spanner can effectively be restricted to spacing fender arm, through restriction spanner stroke, can eliminate subjective factors such as different operating personnel experience, strength, dynamics perception to the difference of test result at to a great extent to the simplified operation process, the accuracy of moment is applyed in the guarantee, has also improved work efficiency simultaneously.

Description

Torque wrench angle limiting device for measuring wheel bolt tightness

Technical Field

The patent relates to the technical field of wheel bolt tightness measurement, in particular to a torque wrench angle limiting device for wheel bolt tightness measurement.

Background

With the rapid development of the automobile industry, wheel fastening tests are related to whether wheel bolts and wheels can stably run in the dynamic motion process of a vehicle, and the wheel fastening tests are an important aspect of the safety of the whole vehicle. The fastening performance of the wheel or the wheel bolt does not reach the standard, so that the automobile is out of control, and the personal safety of passengers is threatened.

At present, most automobile host factories use a torque tightening method to measure the tightening torque of vehicle bolts, and during measurement, a wrench needs to be moved manually to tighten the vehicle bolts at a higher speed. The manipulation of the measuring staff, whether the measuring operation is correct or not and the training level of the measuring staff all influence the accuracy and the precision of the data, so that the test is obviously influenced, and if the test is carried out in multiple steps, the subsequent steps are influenced. The current test method has the following defects:

according to the test specification, each tightening measurement is required to keep a fixed value angle, and the MNA point and the Break away point which are required by people can be obtained only through angles in a reasonable range. When the tightening method is used for measuring the torque and the angle of the wheel bolt, the result is influenced by the fact that the angle is too large and too small. When the measurement angle is too large, the measured torque value is too large, so that the stress loading of the wheel bolt and the wheel bolt hole is excessive, the inaccuracy of test data is caused when the wheel bolt and the wheel bolt hole are repeatedly used, and the subsequent test result is greatly influenced. When the measurement angle is too small, the measured torque value is too small, so that the peak torque value is possibly not up to the investigation standard of the maximum static friction torque value, and therefore, a reasonable test result cannot be obtained if the torque value is too small.

Because the operation level of the operators is not uniform, different operators have different strength, the perception of the strength angle is different, the angle of the person is larger, and the angle of the person is smaller. A fixed operator may have poor repeatability in each operation due to external factors and personal physical conditions, and it is difficult to maintain a stable value at each angle, resulting in an angle that is either too large or too small. There is a certain degree of influence on the accuracy of the test results. If the tightening measuring angle is controlled to be consistent, long-time training needs to be carried out on measuring personnel. The unfixed measuring personnel, the training degree of the measuring personnel and the operation of the measuring personnel after the operation for a long time all have artificial influence on the test result.

Most of the existing torque wrenches are free of angle digital display function. Even if the torque wrench with the digital display function is provided, the operator can quickly move, the digital display changes too quickly, the digital hand cannot be fed back timely, the angle is difficult to control, and the force cannot be discharged timely, so that the tightening angle cannot be controlled without special clamp control.

SUMMERY OF THE UTILITY MODEL

To the above problem, the utility model aims at providing a moment spanner angle stop device for wheel bolt fastening nature is measured for under less experimental place operating mode, the experimental capability test of wheel fastening test can be accomplished to the test engineer who has not passed through special training, and improve the factor of safety of detect operation. The utility model aims at realizing through the following technical scheme:

the utility model provides a torque wrench angle limiting device for measuring wheel bolt tightness, which comprises a fixed angle limiting clamp, wherein the fixed angle limiting clamp is provided with a bottom plate, a side wall and a limiting stop arm, and the bottom plate is provided with a first through hole matched with the appearance of a torque angle sensor; the first end of the side wall is surrounded or semi-surrounded by the bottom plate to be fixed, the second end of the side wall is provided with an axial opening and a radial opening, and the limiting blocking arm is connected to the side wall to form the end part of the radial opening. The limit position of the wrench during rotation can be limited by the limit stop arm.

Further, decide angle limit clamp and last two spacing fender arms that have, two spacing fender arms are connected respectively at radial open both ends, preferably, contained angle between spacing fender arm and the lateral wall suits with the turned angle of spanner at the relevant position.

Furthermore, the distance between the two limiting blocking arms is gradually increased towards the direction of the free end of the two limiting blocking arms along the connecting part of the two limiting blocking arms and the side wall, namely the two limiting blocking arms are arranged in a splayed structure.

Furthermore, stop device still includes sensor fixing device, sensor fixing device fixes on the wheel, sensor fixing device and decide angle limit clamp fixed connection.

Further, the sensor fixing device comprises a sensor clamp and a clamp supporting device, the sensor clamp is fixed on the wheel through the clamp supporting device, the sensor clamp is provided with a second through hole matched with the appearance structure of the torque angle sensor, the torque angle sensor is fixed in the second through hole, and a second end of the torque angle sensor penetrates through the second through hole, extends out of the first through hole and is connected with the wrench; the first end of the torque angle sensor is connected with the bolt to be measured through the adapter. The connection position of the wrench and the torque angle sensor is in the range of the two limit stop arms extending in the width direction in the axial direction, so that the wrench stroke can be effectively limited during operation; meanwhile, in order to ensure stable fixation of the sensor, preferably, the torque angle sensor and the second through hole are in interference fit.

Further, the second end face of the second through hole formed by the sensor clamp is detachably and fixedly connected with the first end face of the first through hole formed by the fixed-angle limiting clamp.

Further, the second end face of the sensor clamp is detachably connected with the first end face of the fixed angle limiting clamp in a bonding mode, preferably, a key groove is formed in the second end face of the sensor clamp, the corresponding position of the first end face of the fixed angle limiting clamp axially extends out of the key, and the key is embedded into the key groove to be matched, so that the sensor clamp is fixedly connected with the fixed angle limiting clamp.

Further, the fixture supporting device comprises a limiting supporting rod, the sensor fixture is relatively fixed with the wheel through the limiting supporting rod, and the limiting supporting rod is fixedly clamped on a second bolt of the wheel through a bolt chuck arranged at the first end of the limiting supporting rod. Here, the second bolt is one of other bolts that fix the same wheel together with the bolt to be measured.

Furthermore, the limiting support rod is provided with a screwing screw, a tension spring, a bolt chuck and a chuck sleeve, the screwing screw is provided with a screwing section and a thread section, the outer diameter of the thread section is smaller than that of the screwing section, and a limiting clamping table is formed between the thread section and the screwing section; the first end of the chuck sleeve abuts against the limiting clamping table, a tension spring is arranged between the first end of the bolt chuck close to the chuck sleeve and the inner end part of the first end of the chuck sleeve, and the thread section of the screwing screw penetrates through the chuck sleeve and the tension spring and then is in threaded connection with the bolt chuck. When the design is adopted to fix the limiting support rod, the axial length of the chuck sleeve covering the bolt chuck is made to be as small as possible by rotating the screwing screw, the second end of the bolt chuck far away from the chuck sleeve is sleeved on the periphery of the second bolt, and then the screwing screw is rotated in the opposite direction to make the chuck sleeve move along the axial direction to cover more areas of the bolt chuck, so that the second end diameter of the bolt chuck is contracted to gradually clamp the second bolt, and the fixing of the limiting support rod on the second bolt is realized.

Preferably, an elastic gasket is further arranged between the chuck sleeve and the screwing bolt limiting clamping table, the outer diameter of the elastic gasket is substantially the same as the outer diameter of the first end of the chuck sleeve, the inner diameter of the elastic gasket is smaller than the inner diameter of the first end of the chuck sleeve, the thread section of the screwing screw penetrates through the elastic gasket and the first end of the chuck sleeve and then is in threaded connection with the bolt chuck, and the first end of the chuck sleeve abuts against the limiting clamping table by abutting against the elastic gasket. By adopting the design structure with the elastic gasket, the radial size of the inner hole at the first end of the chuck sleeve can be relatively larger, so that when the device is disassembled after the bolt tightness test is finished, the chuck sleeve can be reset more quickly under the tension of the tension spring, and the work efficiency during disassembly is improved; on the other hand, adopt gasket structural design, impact and wearing and tearing when can avoiding direct butt between chuck sleeve and the spacing ka tai to can prolong and revolve the life who twists screw rod and chuck sleeve.

Preferably, the screw thread section of revolving the screw rod has two-way screw thread, two-way screw thread includes first external screw thread and second external screw thread, be equipped with on the chuck sleeve with the first internal thread hole of first external screw thread looks adaptation, be equipped with on the bolt chuck with the second internal thread hole of second external screw thread looks adaptation, the screw thread section of revolving the screw rod passes first internal thread hole and second internal thread hole in proper order respectively with chuck sleeve and bolt chuck threaded connection, tension spring fixes between bolt chuck and chuck sleeve. By adopting the design of the bidirectional threads, the chuck sleeve can be more efficiently coated on more bolt sleeve areas when the bolt is rotated and screwed, and the working efficiency is improved.

Further, a first U-shaped hole is formed in the sensor clamp, and the distance between the first U-shaped hole and the second through hole is suitable for the distance between the bolt to be detected and the second bolt; the sensor clamp is fixed by sleeving the first U-shaped hole on the limiting support rod.

Further, for convenient manufacturing, the sensor fixture adopts the form that the components of a whole that can function independently processing reconnection is fixed as a body structure, including fixed plate and support, the second through-hole sets up on the fixed plate, the support sets up first U shape hole and second U shape hole, forms the first terminal surface fixed connection of second U shape hole and fixed plate on the support.

The torque angle sensor is connected with the data conversion host, the data conversion host is connected with the upper computer, and the upper computer is provided with a display device.

Adopt the utility model discloses a moment spanner angle stop device has following beneficial effect when carrying out bolt-tightness measurement:

(1) the limit stop arm can effectively limit the stroke of the torque wrench, and the difference of subjective factors such as experience, strength, force perception and the like of different operators on a test result can be eliminated to a great extent by limiting the stroke of the torque wrench, so that the operation process is simplified, the accuracy of the applied torque is ensured, and the working efficiency is improved;

(2) the sensor is fixed through the second through hole of the sensor clamp and the first through hole of the fixed-angle limiting clamp, and the sensor clamp is stably fixed through the limiting support rod, so that the stability of the sensor in the detection process is ensured, and the accuracy and the reliability of the measured data are further ensured;

(3) when the limiting device of the utility model is used, a single technician can complete the test operation without the assistance of other personnel, thereby effectively saving the labor cost and improving the operation efficiency;

(4) the sensor is connected with the upper computer through the data conversion host, so that torque data can be effectively acquired in time, and a reasonable test result can be obtained during screwing.

Drawings

Fig. 1 is an assembly and usage schematic diagram of a torque wrench angle limiting device for wheel bolt tightness measurement according to a preferred embodiment of the present invention;

FIG. 2 is a schematic view of a sensor fixture according to a preferred embodiment of the present invention;

fig. 3 is a schematic view of a fixed angle limiting clamp according to a preferred embodiment of the present invention;

fig. 4 is a schematic view of a torque angle sensor according to the present invention;

fig. 5 is a schematic view of the limiting support rod of the present invention.

In the figure:

1-a sensor clamp; 22-a side wall; 71-a screw-threaded rod;

11-a scaffold; a 23-bond; 72-a resilient gasket;

111-a second U-shaped aperture; 24-a base plate; 73-a collet sleeve;

112-a first U-shaped aperture; 241-a first via; 74-a tension spring;

12-a fixing plate; 3-a crossover joint; 75-bolt clamps;

121-a second via; 4-butterfly bolts; 8-a bolt to be tested;

122-a keyway; 5-a torque angle sensor; 9-vehicle wheels;

2-fixing an angle limiting clamp; 6-a wrench; m10-an upper computer;

21-a limit stop arm; 7-a limit support rod; m11-data transformation host.

Detailed Description

The preferred embodiments of the present invention will be described below with reference to the accompanying drawings.

It should be noted that in the following description, the terms "upper", "lower", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the referred device or element 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. Furthermore, in the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

The embodiment provides a torque wrench angle limiting device for measuring wheel bolt tightness, which comprises a fixed angle limiting clamp 2, as shown in fig. 3, the fixed angle limiting clamp 2 is provided with a bottom plate 24, a side wall 22 and a limiting stop arm 21, and the bottom plate 24 is provided with a first through hole 241 adapted to the shape of a torque angle sensor 5; the first end of the side wall 22 is surrounded or semi-surrounded by the bottom plate 24 and fixed, the side wall 22 has an axial opening and a radial opening at the second end, and the limit stop arm 21 is connected to the side wall 22 to form the end of the radial opening.

In a preferred embodiment, the fixed angle position-limiting clamp 2 has two position-limiting stop arms 21, and the two position-limiting stop arms 21 are respectively connected to two ends of the radial opening. In order to better adapt to the limit of the wrench, in the illustrated embodiment, the distance between the two limit stop arms 21 gradually increases from the connection part with the side wall to the free end, and the included angle between the limit stop arms 21 and the side wall 22 is adapted to the rotation angle of the wrench at the corresponding position, as shown in fig. 3, the two limit stop arms 21 are arranged in a splayed structure.

In other preferred embodiments, for the demand that adapts to lightweight design, the lateral wall 22 of deciding angle spacing anchor clamps 2 can adopt hollow out construction, as shown in fig. 3, can set up a plurality of trompils on lateral wall 22 to alleviate the whole weight of deciding angle spacing anchor clamps 2, make the utility model discloses a device is whole light portable more.

In a preferred embodiment, the limiting device further comprises a sensor fixing device, the sensor fixing device is fixed on the wheel, and the sensor fixing device is fixedly connected with the fixed-angle limiting clamp. Sensor fixing device includes sensor anchor clamps 1 and anchor clamps strutting arrangement, sensor anchor clamps 1 passes through anchor clamps strutting arrangement to be fixed on the wheel, sensor anchor clamps 1 has the second through-hole 121 that suits with torque angle sensor 5's appearance structure, torque angle sensor 5 is fixed in the second through-hole 121, torque angle sensor 5's second end passes extend behind the second through-hole 121 and exceed first through-hole 241 and suit with spanner 6's effect position, and torque angle sensor 5's first end is passed through crossover sub 3 and is connected on the bolt 8 that awaits measuring.

In a preferred embodiment, the second end surface of the second through hole 121 formed by the sensor holder 1 and the first end surface of the first through hole 241 formed by the fixed angle limiting holder 2 are detachably connected by a screw or a bonding manner, in the illustrated embodiment, the sensor holder 1 and the fixed angle limiting holder 2 are connected by a bonding manner, as shown in fig. 2 and 3, the first end surface of the fixed angle limiting holder 2 is provided with a fan-shaped key 23 extending axially, the second end surface of the sensor holder 1 is provided with a fan-shaped key slot 122 adapted to the fan-shaped key 23, and the fixed angle limiting holder 2 and the sensor holder 1 can be connected and fixed by fitting the key 23 into the key slot 122 in an interference fit manner. In order to ensure the reliability and convenience of the fixing, in the specific implementation process, bolt holes can be additionally arranged on the fixed angle limiting clamp 2 and the sensor clamp 1, and then the fixed angle limiting clamp 2 and the sensor clamp 1 are pre-tightened and pre-fixed by adopting the butterfly bolts 4 matched in the additionally arranged bolt holes, so that the key 23 can be assembled with the key groove 122 more easily. In this embodiment, to facilitate the use of the thumb screw 4, the first end of the sidewall 22 is fixed by semi-encircling the bottom plate 24, and the bolt holes are disposed at the sections of the bottom plate 24 not encircled by the sidewall 22, so that there is enough space for screwing the thumb screw 4.

In a preferred embodiment, the limiting baffle 21 is made of a steel plate material; the fixed angle position-limiting jig 2 may be an integrally molded cast structure, or may be a post-formed member obtained by welding the position-limiting baffle 21 to a jig body integrally formed by the bottom plate 24 and the side wall 22.

In the illustrated embodiment, the clamp supporting device comprises a limit supporting rod 7, the sensor clamp 1 is fixed relative to the wheel 9 through the limit supporting rod 7, the limit supporting rod 7 is fixedly clamped on a second bolt which is fixed on the wheel 9 together with the bolt 8 to be tested through a bolt clamping head 75 arranged at a first end of the limit supporting rod 7, specifically, the limit supporting rod 7 is provided with a screwing screw 71, a tension spring 74, a bolt clamping head 75 and a clamping head sleeve 73, the screwing screw 71 is provided with a screwing section and a threaded section, the external diameter of the threaded section is smaller than that of the screwing section, and a limit clamping platform is formed between the threaded section and the screwing section, as shown in fig. 5; the first end of the chuck sleeve 73 is abutted and fixed on the limit chuck, the thread section of the screwing screw rod 71 penetrates through the chuck sleeve 73 to be in threaded connection with the bolt chuck 75, and a tension spring 74 is arranged between the bolt chuck 75 and the chuck sleeve 73. Meanwhile, in order to avoid impact abrasion between the chuck sleeve and the limiting clamping table, an elastic gasket 72 is arranged between the chuck sleeve and the limiting clamping table. Here, the bolt cartridge 75 is preferably a hexagonal cartridge.

In another preferred embodiment, the thread section of the screwing screw 71 has a two-way thread, the two-way thread includes a first external thread and a second external thread, the chuck sleeve 73 is provided with a first internal thread hole matched with the first external thread, the bolt chuck 75 is provided with a second internal thread hole matched with the second external thread, the two-way thread section of the screwing screw sequentially passes through the first internal thread hole and the second internal thread hole to be respectively in threaded connection with the chuck sleeve 73 and the bolt chuck 75, and the tension spring is fixed between the bolt chuck 75 and the chuck sleeve 73.

In the illustrated embodiment, the sensor clamp 1 is provided with a first U-shaped hole 112, and the distance between the first U-shaped hole 112 and the second through hole is adapted to the distance between the bolt 8 to be measured and the second bolt; the sensor clamp 1 is fixed by sleeving the first U-shaped hole 112 on the limiting support rod 7.

In a preferred embodiment, the sensor fixture 1 is formed by combining split machining components, as shown in fig. 2, the machining component forming the sensor fixture 1 includes a fixing plate 12 and a bracket 11, the second through hole 121 is disposed on the fixing plate 12, the bracket 11 is provided with a first U-shaped hole 112 and a second U-shaped hole 111, and a second end surface of the bracket 11, which forms the second U-shaped hole 111, is fixedly connected with a first end surface of the fixing plate 12.

In preferred embodiment, adopt the utility model discloses when the device carries out bolt-tightness and measures, moment angle sensor 5 links to each other with data conversion host computer M11, data conversion host computer M11 links to each other with host computer M10, host computer M10 has display device to show moment data in real time in the test procedure, make things convenient for operating personnel to look over and adjust the test procedure, so that obtain reasonable reliable test data.

Finally, it is noted that the above preferred embodiments illustrate rather than limit the invention, and that, although the invention has been described in detail with reference to the above preferred embodiments, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the scope of the invention as defined by the appended claims; the dimensions shown in the figures and the embodiments are not related to specific physical objects, and are not used for limiting the protection scope of the present invention, and the physical dimensions can be selected and changed according to actual needs.

Claims

1. The torque wrench angle limiting device for measuring the wheel bolt tightness is characterized by comprising a fixed angle limiting clamp (2), wherein the fixed angle limiting clamp (2) is provided with a bottom plate (24), a side wall (22) and a limiting stop arm (21), and a first through hole matched with the shape of a torque angle sensor (5) is formed in the bottom plate (24); the first end of the side wall (22) is surrounded or semi-surrounded by the bottom plate (24) and is fixed, the second end of the side wall (22) is provided with an axial opening and a radial opening, and the limiting stop arm (21) is connected to the side wall (22) to form the end part of the radial opening.

2. The torque wrench angle limiting device according to claim 1, wherein the fixed angle limiting clamp (2) is provided with two limiting stop arms (21), and the two limiting stop arms (21) are respectively connected to two ends of the radial opening.

3. The torque wrench angle limiting device according to claim 2, wherein the two limiting stop arms (21) are arranged in a splayed configuration, and the distance between the two limiting stop arms (21) gradually increases along the connection with the side wall towards the free end thereof.

4. The torque wrench angle limiting device according to claim 1, further comprising a sensor fixing device fixed to the wheel, the sensor fixing device being fixedly connected to the fixed angle limiting clamp (2).

5. The torque wrench angle limiting device according to any one of claims 1 to 4, wherein the sensor fixing device comprises a sensor clamp (1) and a clamp supporting device, the sensor clamp (1) is fixed on the wheel (9) through the clamp supporting device, the sensor clamp (1) is provided with a second through hole (121) adapted to the shape structure of the torque angle sensor (5), the torque angle sensor (5) is fixed in the second through hole (121), a second end of the torque angle sensor (5) passes through the second through hole (121) and then extends out of the first through hole (241) and is adapted to the action position of the wrench (6), and a first end of the torque angle sensor (5) is connected with a bolt (8) to be tested through a conversion joint (3).

6. Torque wrench angle limitation device according to claim 5, characterized in that the sensor clamp (1) forms a detachable fixed connection between the second end face of the second through hole (121) and the first end face of the fixed angle limitation clamp (2) forming the first through hole (241).

7. The torque wrench angle limiting device according to claim 6, wherein the second end surface of the sensor clamp (1) and the first end surface of the fixed angle limiting clamp (2) are detachably connected by bonding.

8. The torque wrench angle limiting device according to claim 5, wherein the clamp supporting device comprises a limiting support rod (7), the sensor clamp (1) is relatively fixed with the wheel (9) through the limiting support rod (7), and the limiting support rod (7) is fixedly clamped on a second bolt of the wheel (9) through a bolt clamping head (75) arranged at a first end of the limiting support rod.

9. The torque wrench angle limiting device according to claim 8, wherein the limiting support rod (7) is provided with a screwing screw (71), a tension spring (74), a bolt chuck (75) and a chuck sleeve (73), the screwing screw (71) is provided with a screwing section and a threaded section, the external diameter of the threaded section is smaller than that of the screwing section, and a limiting clamping platform is formed between the threaded section and the screwing section; the first end of the chuck sleeve (73) is abutted to the limiting clamping table, the thread section of the screwing screw rod (71) penetrates through the chuck sleeve (73) to be in threaded connection with the bolt chuck (75), and a tension spring (74) is arranged between the bolt chuck (75) and the chuck sleeve (73).

10. The torque wrench angle limiting device according to claim 8, wherein a first U-shaped hole (112) is formed in the sensor clamp (1), and the distance between the first U-shaped hole (112) and the second through hole is adapted to the distance between the bolt (8) to be tested and the second bolt; the sensor clamp (1) is fixed by sleeving the first U-shaped hole (112) on the limiting support rod (7).

11. The torque wrench angle limiting device according to claim 10, wherein the sensor clamp (1) comprises a fixing plate (12) and a bracket (11), the second through hole is formed in the fixing plate (12), the bracket (11) is provided with a first U-shaped hole (112) and a second U-shaped hole (111), and a second end face of the bracket (11) forming the second U-shaped hole (111) is fixedly connected with a first end face of the fixing plate (12).

12. The torque wrench angle limiting device according to any one of claims 1 to 4, wherein the torque angle sensor (5) is connected with a data conversion host (M11), the data conversion host (M11) is connected with an upper computer (M10), and the upper computer (M10) is provided with a display device.