CN220270382U

CN220270382U - Steering transmission shaft spline fit clearance measurement tool

Info

Publication number: CN220270382U
Application number: CN202320906655.XU
Authority: CN
Inventors: 沈辉; 钱伟斌
Original assignee: Changzhou Daocheng Transmission Technology Co ltd
Current assignee: Changzhou Daocheng Transmission Technology Co ltd
Priority date: 2023-04-20
Filing date: 2023-04-20
Publication date: 2023-12-29
Anticipated expiration: 2033-04-20

Abstract

The utility model relates to the technical field of measurement of steering transmission shafts, in particular to a spline fit clearance measurement tool of a steering transmission shaft, which comprises a workbench, a fixed seat and a positioning seat, wherein the fixed seat and the positioning seat are arranged on the workbench at intervals; the utility model has simple structural design, simple and convenient operation and high measurement precision.

Description

Steering transmission shaft spline fit clearance measurement tool

Technical Field

The utility model relates to the technical field of measurement of steering transmission shafts, in particular to a tool for measuring spline fit clearance of a steering transmission shaft.

Background

The steering transmission shaft assembly is a mechanism for connecting a steering column and a steering gear and transmitting torque, and mainly comprises an input shaft, a transmission shaft and an output shaft, wherein the transmission shaft comprises a shaft body and a shaft sleeve sleeved on the shaft body, and the shaft body is connected with the shaft sleeve through a sliding spline. Because the spline design inevitably has a fit clearance, if the spline fit clearance is large when the automobile turns left and right, clearance collision noise can be generated; if the spline fit clearance is too small, the steering transmission shaft has poorer collapse performance. Thus, there is typically a steering drive shaft spline fit clearance measurement device that measures the spline fit clearance.

At present, when most of spline fit clearance measuring devices for steering transmission shafts carry out spline fit clearance measurement on the transmission shafts, the step is complex, the operation is troublesome, and the measurement data is obtained by rotating the shaft body in a manual mode. In addition, when the measuring device fixes the transmission shaft, the shaft hole or the bearing is adopted, so that the dimension of the shaft hole or the bearing is required to be matched with the dimension of the transmission shaft in height, otherwise, the fixing of the transmission shaft is not stable enough, and the measuring accuracy is affected.

Disclosure of Invention

The utility model aims to solve the technical problems that: overcomes the defects in the prior art, and provides a steering transmission shaft spline fit clearance measurement tool with simple structural design, simple and convenient operation and high measurement precision.

The technical scheme adopted for solving the technical problems is as follows: the utility model provides a frock is measured to steering transmission shaft spline fit clearance, includes workstation and interval installation fixing base and positioning seat on the workstation, V type groove has been seted up at the top middle part of fixing base, the mounting hole corresponding with V type groove has been seted up at the middle part of positioning seat, be equipped with the fixed of clamping assembly in the fixing base that is used for V type inslot axle sleeve, install the reference column on the positioning seat, the right-hand member of reference column is rotated and is installed in the mounting hole, the locating hole has been seted up to the left end, be equipped with the location subassembly in the reference column and be used for the location of locating hole inner shaft body, the measuring block is installed to the bilateral symmetry of reference column left end, the dial indicator corresponding with the measuring block is installed on the top of positioning seat, the table syringe needle of dial indicator is contacted with the top surface of measuring the piece, be equipped with the rotation subassembly on the workstation and be used for the axis of rotation body.

Further, the rotating assembly comprises a first electromagnet, a second electromagnet, a coil and a battery pack, wherein the first electromagnet is respectively arranged on the bottom surface of the end part of the measuring block, which is far away from the positioning column, the second electromagnet is respectively arranged on two sides of the workbench and is respectively corresponding to the first electromagnet, the coil is respectively wound on the first electromagnet and the second electromagnet and is respectively connected with the battery pack, and the winding directions of the coils on the first electromagnet and the second electromagnet are opposite.

Further, the clamping assembly comprises gears symmetrically arranged at two ends of the fixing seat, a pressing rod arranged on the gears and a driving group for driving the gears to rotate, gear cavities communicated with the V-shaped grooves are symmetrically formed at two ends of the fixing seat, the gears are rotatably arranged in the gear cavities, and the pressing rod extends into the V-shaped grooves far away from the end parts of the gears.

Further, the drive group includes bi-directional screw rod, voussoir, rack, torsional spring and hand wheel, bi-directional screw rod rotates the screw rod intracavity of seting up in the fixing base bottom, the both ends of bi-directional screw rod are located to the voussoir symmetrical thread cover, the voussoir slidable mounting is in the voussoir intracavity of seting up at the fixing base both ends respectively, voussoir intracavity and screw rod chamber intercommunication, rack slidable mounting is in the rack intracavity of seting up at the fixing base both ends respectively, the rack chamber communicates with V type groove and voussoir intracavity respectively, the top inboard of rack meshes with the gear, the bottom inclined plane of rack extends to the voussoir intracavity, and with the inclined plane sliding connection of voussoir, the right-hand member of bi-directional screw rod is epitaxial to be stretched out the screw rod chamber and is connected with the hand wheel, the right-hand member at bi-directional screw rod is installed to the torsional spring.

Further, an arc-shaped groove is formed in the bottom surface of the end portion, far away from the gear, of the pressure rod.

Further, the locating component comprises a sliding block, a locating ball and a plurality of tight springs, a plurality of sliding cavities are evenly formed in the left end of the locating column along the circumferential direction, the sliding cavities are respectively communicated with the locating holes through ball holes, the sliding block is slidably mounted in the sliding cavities, the locating ball is mounted at the end part of the sliding block, which is close to the locating holes, the locating ball penetrates through the ball holes and extends into the locating holes, the tight springs are arranged in the sliding cavities, one ends of the tight springs are connected with the end parts, which are far away from the locating holes, of the sliding blocks, and the other ends of the tight springs are connected with the outer side walls of the sliding cavities.

The beneficial effects of the utility model are as follows:

(1) According to the utility model, the shaft body is inserted into the positioning hole and positioned by the positioning component, meanwhile, the shaft sleeve penetrates through the V-shaped groove and is fixed by the clamping component, the spline fit clearance can be measured only by starting the rotating component during testing, the operation is simple and convenient, and meanwhile, the fixing stability of the transmission shaft is improved due to the arrangement of the clamping component and the positioning component, so that the measuring precision is ensured;

(2) According to the utility model, through the arrangement of the arc-shaped grooves, the contact area between the compression bar and the shaft sleeve is increased, so that the stability of fixing the transmission shaft is further improved.

Drawings

The utility model will be further described with reference to the drawings and embodiments.

FIG. 1 is a front view of the present utility model;

FIG. 2 is a cross-sectional view of a holder according to the present utility model;

fig. 3 is an enlarged view of a portion a in fig. 2;

FIG. 4 is a cross-sectional view of a positioning seat in the present utility model;

FIG. 5 is a side view of a positioning post of the present utility model;

fig. 6 is a cross-sectional view of a positioning post in accordance with the present utility model.

In the figure: 1. a work table; 2. a fixing seat; 3. a positioning seat; 4. a V-shaped groove; 5. a mounting hole; 6a, gears; 6b, pressing the rod; 6c, driving group; 6c1, a bidirectional screw; 6c2, wedge blocks; 6c3, a rack; 6c4, torsion springs; 6c5, a hand wheel; 7. positioning columns; 8. positioning holes; 9a, a sliding block; 9b, positioning balls; 9c, tightly pushing the spring; 10. a measuring block; 11. a dial indicator; 12a, a first electromagnet; 12b, a second electromagnet; 12c, a coil; 12d, a battery pack; 13. a gear cavity; 14. a screw cavity; 15. a wedge cavity; 16. a rack cavity; 17. an arc-shaped groove; 18. a sliding cavity; 19. a ball hole; 20. a rotating shaft; 21. and a controller.

Detailed Description

The utility model will now be further described with reference to the accompanying drawings. These drawings are simplified schematic views illustrating the basic structure of the present utility model by way of illustration only, and thus show only the constitution related to the present utility model.

As shown in fig. 1, fig. 2, fig. 4 and fig. 5, a tool for measuring spline fit clearance of a steering transmission shaft comprises a workbench 1, a fixing seat 2 and a positioning seat 3, wherein the fixing seat 2 and the positioning seat 3 are installed on the workbench 1 at intervals, a V-shaped groove 4 is formed in the middle of the top end of the fixing seat 2, a mounting hole 5 corresponding to the V-shaped groove 4 is formed in the middle of the positioning seat 3, a clamping component is arranged in the fixing seat 2 and used for fixing a shaft sleeve in the V-shaped groove 4, a positioning column 7 is installed on the positioning seat 3, the right end of the positioning column 7 is rotatably installed in the mounting hole 5, a positioning hole 8 is formed in the left end of the positioning column 7, a positioning component is arranged in the positioning column 7 and used for positioning an inner shaft body of the positioning hole 8, a measuring block 10 is symmetrically installed on two sides of the left end of the positioning column 7, a dial gauge 11 corresponding to the measuring block 10 is installed on the top end of the positioning seat 3, and a gauge needle of the dial gauge 11 is contacted with the top surface of the measuring block 10, and a rotating component is arranged on the workbench 1 and used for rotating the shaft body. The shaft body is inserted into the positioning hole 8 and positioned by the positioning component, meanwhile, the shaft sleeve penetrates through the V-shaped groove 4 and is fixed by the clamping component, the spline fit clearance can be measured only by starting the rotating component during testing, the operation is simple and convenient, and the setting of the clamping component and the positioning component improves the stability of the fixing of the transmission shaft, so that the measurement accuracy is ensured. Specifically, the right end of the positioning column 7 is installed in the installation hole 5 through a bearing; the measuring block 10 is parallel to the table 1.

As shown in fig. 1 and 5, the rotating assembly includes a first electromagnet 12a, a second electromagnet 12b, a coil 12c and a battery pack 12d, the first electromagnet 12a is respectively installed on the bottom surface of the end portion of the measuring block 10, which is far away from the positioning column 7, the second electromagnet 12b is respectively installed on two sides of the workbench 1 and respectively corresponds to the first electromagnet 12a, the coil 12c is respectively wound on the first electromagnet 12a and the second electromagnet 12b, and is respectively connected to the battery pack 12d, and winding directions of the coils 12c on the first electromagnet 12a and the second electromagnet 12b are opposite. When the rotating shaft body is needed, the coils 12c on the first electromagnet 12a and the second electromagnet 12b on one side are electrified, so that the first electromagnet 12a and the second electromagnet 12b on the other side generate opposite magnetic poles to attract each other, the positioning column 7 is driven to rotate so as to synchronously drive the shaft body, and at the moment, the coils 12c on the first electromagnet 12a and the second electromagnet 12b on the other side are in a power-off state.

As shown in fig. 2, the clamping assembly includes a gear 6a symmetrically arranged at two ends of the fixing seat 2, a compression bar 6b installed on the gear 6a, and a driving group 6c for driving the gear 6a to rotate, two ends of the fixing seat 2 are symmetrically provided with a gear cavity 13 communicated with the V-shaped groove 4, the gear 6a is rotatably installed in the gear cavity 13, and an end part of the compression bar 6b away from the gear 6a extends into the V-shaped groove 4. Specifically, the gear 6a is installed in the gear chamber 13 through the rotation shaft 20; the two compression bars 6b are symmetrically arranged. The shaft sleeve is stably fixed in the V-shaped groove 4 through the matching of the V-shaped groove 4 and the compression bar 6 b.

As shown in fig. 2 and 3, the driving set 6c includes a bidirectional screw 6c1, a wedge 6c2, a rack 6c3, a torsion spring 6c4 and a hand wheel 6c5, the bidirectional screw 6c1 is rotatably installed in a screw cavity 14 formed at the bottom end of the fixed seat 2, the wedge 6c2 is symmetrically threaded and sleeved at two ends of the bidirectional screw 6c1, the wedge 6c2 is respectively slidably installed in wedge cavities 15 formed at two ends of the fixed seat 2, the wedge cavities 15 are communicated with the screw cavity 14, the rack 6c3 is respectively slidably installed in rack cavities 16 formed at two ends of the fixed seat 2, the rack cavities 16 are respectively communicated with the V-shaped groove 4 and the wedge cavity 15, the top inner side of the rack 6c3 is meshed with the gear 6a, the bottom inclined surface of the rack 6c3 extends into the wedge cavity 15 and is slidably connected with the inclined surface of the wedge 6c2, the right end of the bidirectional screw 6c1 extends out of the screw cavity 14 to be connected with the hand wheel 6c5, and the torsion spring 6c4 is installed at the right end of the bidirectional screw 6c 1. Specifically, two ends of the bidirectional screw 6c1 are respectively installed in the screw cavity 14 through bearings; the bottom end of the wedge block 6c2 is in sliding connection with the bottom wall of the wedge block cavity 15; the outer side of the rack 6c3 is in sliding connection with the side wall of the rack cavity 16; torsion spring 6c4 is disposed within screw cavity 14. When the shaft sleeve is fixed, firstly, the hand wheel 6c5 is rotated, the hand wheel 6c5 drives the bidirectional screw rod 6c1 to rotate so that the two wedge blocks 6c2 slide in opposite directions, then the rack 6c3 is driven to move downwards, the downward movement of the rack 6c3 drives the gear 6a to rotate so as to synchronously drive the compression bar 6b to rotate upwards, then the shaft sleeve is arranged in the V-shaped groove 4 in a penetrating mode, finally, the hand wheel 6c5 is released, the bidirectional screw rod 6c1 is reversely rotated and reset under the action of the torsion spring 6c4, the reverse rotation of the bidirectional screw rod 6c1 enables the two wedge blocks 6c2 to slide in opposite directions, then the rack 6c3 is driven to move upwards, the upward movement of the rack 6c3 drives the gear 6a to rotate so as to synchronously drive the compression bar 6b to rotate downwards, and the shaft sleeve is pressed in the V-shaped groove 4. In order to facilitate the rotation of the hand wheel 6c5, an anti-skid sleeve can be sleeved on the hand wheel 6c 5.

As shown in fig. 2, in order to increase the contact area between the pressing rod 6b and the shaft sleeve, thereby further improving the stability of fixing the transmission shaft, an arc-shaped groove 17 is formed in the bottom surface of the end portion of the pressing rod 6b, which is far away from the gear 6 a.

As shown in fig. 6, the positioning assembly comprises a sliding block 9a, a positioning ball 9b and a plurality of propping springs 9c, wherein a plurality of sliding cavities 18 are uniformly formed in the left end of the positioning column 7 along the circumferential direction, the sliding cavities 18 are respectively communicated with the positioning holes 8 through ball holes 19, the sliding block 9a is slidably mounted in the sliding cavities 18, the positioning ball 9b is mounted at the end part of the sliding block 9a, which is close to the positioning holes 8, the positioning ball 9b extends into the positioning holes 8 through the ball holes 19, the propping springs 9c are arranged in the sliding cavities 18, one end of each propping spring 9c is connected with the end part, which is far away from the positioning holes 8, of the sliding block 9a, and the other end of each propping spring is connected with the outer side wall of the sliding cavity 18. When the shaft body is positioned, the end part of the shaft body, which is far away from the shaft sleeve, is inserted into the positioning hole 8, and the positioning ball 9b is abutted against the shaft body under the elastic action of the jacking spring 9c, so that the positioning is realized.

During measurement, the end part of the shaft body, far away from the shaft sleeve, is inserted into the positioning hole 8 and positioned by the positioning assembly, the shaft sleeve penetrates through the V-shaped groove 4 and is fixed by the clamping assembly, then the controller 21 firstly controls the coils 12c on the first electromagnet 12a and the second electromagnet 12b on one side to be electrified, the coils 12c on the first electromagnet 12a and the second electromagnet 12b on the other side are powered off, the shaft body rotates, the measuring block 10 on the other side further rotates to upwards rotate to prop against the gauge needle of the dial indicator 11, the swinging value of the dial indicator 11 is spline clearance, finally the controller 21 controls the coils 12c on the first electromagnet 12a and the second electromagnet 12b on one side to be powered off, the coils 12c on the first electromagnet 12a and the second electromagnet 12b on the other side are electrified, the shaft body rotates, and the spline clearance is confirmed through the dial indicator 11 on one side again.

The above embodiments are only for illustrating the technical concept and features of the present utility model, and are intended to enable those skilled in the art to understand the content of the present utility model and to implement the same, but are not intended to limit the scope of the present utility model, and all equivalent changes or modifications made according to the spirit of the present utility model should be included in the scope of the present utility model.

Claims

1. The utility model provides a frock is measured to steering transmission shaft spline fit clearance, installs fixing base (2) and positioning seat (3) on workstation (1) including workstation (1) and interval, V type groove (4) have been seted up at the top middle part of fixing base (2), mounting hole (5) corresponding with V type groove (4) have been seted up at the middle part of positioning seat (3), its characterized in that: the utility model discloses a fixing base, including fixing base (2) and locating seat (3), be equipped with clamping assembly in fixing base (2) and be used for V type groove (4) inner sleeve's fixed, install reference column (7) on locating seat (3), the right-hand member of reference column (7) is rotated and is installed in mounting hole (5), and locating hole (8) have been seted up to the left end, be equipped with the location subassembly in reference column (7) and be used for the location of locating hole (8) interior shaft body, survey piece (10) are installed to the bilateral symmetry of reference column (7) left end, dial indicator (11) corresponding with survey piece (10) are installed on the top of locating seat (3), the gauge needle of dial indicator (11) is contacted with the top surface of survey piece (10), be equipped with on workstation (1) and rotate the subassembly and be used for the axis of rotation body.

2. The steering drive shaft spline fit clearance measurement tool according to claim 1, wherein: the rotating assembly comprises a first electromagnet (12 a), a second electromagnet (12 b), a coil (12 c) and a battery pack (12 d), wherein the first electromagnet (12 a) is respectively arranged on the bottom surface of the end part of the measuring block (10) far away from the positioning column (7), the second electromagnet (12 b) is respectively arranged on two sides of the workbench (1) and respectively corresponds to the first electromagnet (12 a), the coil (12 c) is respectively wound on the first electromagnet (12 a) and the second electromagnet (12 b) and is respectively connected with the battery pack (12 d), and the winding directions of the coils (12 c) on the first electromagnet (12 a) and the second electromagnet (12 b) are opposite.

3. The steering drive shaft spline fit clearance measurement tool according to claim 1, wherein: the clamping assembly comprises gears (6 a) symmetrically arranged at two ends of the fixing seat (2), a pressing rod (6 b) arranged on the gears (6 a) and a driving group (6 c) for driving the gears (6 a) to rotate, gear cavities (13) communicated with the V-shaped grooves (4) are symmetrically formed at two ends of the fixing seat (2), the gears (6 a) are rotatably arranged in the gear cavities (13), and the end parts of the pressing rod (6 b) away from the gears (6 a) extend into the V-shaped grooves (4).

4. The steering drive shaft spline fit clearance measurement tool of claim 3, wherein: the driving group (6 c) comprises a bidirectional screw (6 c 1), a wedge block (6 c 2), a rack (6 c 3), a torsion spring (6 c 4) and a hand wheel (6 c 5), the bidirectional screw (6 c 1) is rotationally arranged in a screw cavity (14) formed in the bottom end of the fixed seat (2), the wedge block (6 c 2) is symmetrically sleeved at two ends of the bidirectional screw (6 c 1) in a threaded manner, the wedge block (6 c 2) is respectively and slidably arranged in wedge block cavities (15) formed in two ends of the fixed seat (2), the wedge block cavities (15) are communicated with the screw cavity (14), the rack (6 c 3) is respectively and slidably arranged in rack cavities (16) formed in two ends of the fixed seat (2), the rack cavities (16) are respectively communicated with the V-shaped groove (4) and the wedge block cavities (15), the inner side of the top end of the rack (6 c 3) is meshed with the gear (6 a), the bottom inclined surfaces of the rack (6 c 3) are extended into the wedge cavities (15), the inclined surfaces of the wedge blocks (6 c 2) are slidably connected with the inclined surfaces of the wedge block (6 c 2), and the right end (6 c) is slidably connected with the screw cavity (6 c) and the right end (4) of the torsion spring (6 c 1).

5. The steering drive shaft spline fit clearance measurement tool according to claim 3 or 4, wherein: an arc-shaped groove (17) is formed in the bottom surface of the end part of the pressing rod (6 b), which is far away from the gear (6 a).

6. The steering drive shaft spline fit clearance measurement tool according to claim 1, wherein: the positioning assembly comprises a sliding block (9 a), a positioning ball (9 b) and a plurality of jacking springs (9 c), wherein a plurality of sliding cavities (18) are uniformly formed in the left end of the positioning column (7) along the circumferential direction, the sliding cavities (18) are respectively communicated with the positioning holes (8) through ball holes (19), the sliding block (9 a) is slidably mounted in the sliding cavities (18), the positioning ball (9 b) is mounted at the end part of the sliding block (9 a) close to the positioning holes (8), the positioning ball (9 b) penetrates through the ball holes (19) to extend into the positioning holes (8), the jacking springs (9 c) are arranged in the sliding cavities (18), one end of each jacking spring (9 c) is connected with the end part of the sliding block (9 a) away from the positioning holes (8), and the other end of each jacking spring is connected with the outer side wall of each sliding cavity (18).