CN219532484U

CN219532484U - Testing structure for torsional fatigue of differential mechanism

Info

Publication number: CN219532484U
Application number: CN202320691199.1U
Authority: CN
Inventors: 刘浩; 张建川; 朵伟; 桂立
Original assignee: Chongqing Qingyan Ligong Automotive Testing & Service Co ltd
Current assignee: Chongqing Qingyan Ligong Automotive Testing & Service Co ltd
Priority date: 2023-03-31
Filing date: 2023-03-31
Publication date: 2023-08-15
Anticipated expiration: 2033-03-31

Abstract

The utility model discloses a testing structure of torsional fatigue of a differential mechanism, which comprises the differential mechanism, a testing box and a fixed base which is positioned below the testing box and used for supporting the testing box, wherein the differential mechanism is positioned in the testing box, two output ends of the differential mechanism are respectively and rotatably connected to the left side and the right side of the testing box, a torsion shaft is also arranged in the testing box, two ends of the torsion shaft are respectively and rotatably connected to the left side and the right side of the testing box, a torsion gear matched with a spline is sleeved on the torsion shaft, the torsion gear is meshed with an input tooth of the differential mechanism, differential locking devices are respectively arranged on the left side and the right side of the testing box, each differential locking device comprises a locking shaft matched with an internal spline sleeve of the output end of the differential mechanism and a supporting seat fixedly connected with the locking shaft, and one side of the testing box is also provided with a torsion driving device which is in transmission connection with one end of the torsion shaft on the side where the torsion driving device is positioned through the torsion driving device. The utility model has simple structure, reliable test and convenient use.

Description

Testing structure for torsional fatigue of differential mechanism

Technical Field

The utility model relates to the technical field of differential testing, in particular to a testing structure for torsional fatigue of a differential.

Background

The differential assembly is a core component of a drive axle, and has the basic function of transmitting torque and rotation speed generated by an automobile engine to driving wheels, and reasonably distributing the rotation speeds of left and right driving wheels when turning. The differential mechanism is provided with a power input end and two power output ends, and the working state of the differential mechanism is stressed more complicated. The torque value born by the differential mechanism is an important technical parameter, in the testing process, the transmission shafts at the left output end and the right output end of the differential mechanism are required to be locked, and then input torque is provided for the power input end of the differential mechanism in an output mode, so that the working condition of the differential mechanism is simulated. Therefore, a special device for testing the torsional fatigue of the differential is needed to test the differential, and further consideration is needed to design a device for testing the torsional fatigue of the differential, which has the advantages of simple structure, reliable testing and convenient use.

Disclosure of Invention

Aiming at the defects in the prior art, the utility model aims to solve the technical problems that: how to provide a device for testing the torsional fatigue of a differential mechanism, which has simple structure, reliable test and convenient use.

In order to solve the technical problems, the utility model adopts the following technical scheme:

the utility model provides a testing structure of differential mechanism torsional fatigue, including the differential mechanism, the test box and be located the test box below in order to be used for carrying out the unable adjustment base of supporting to the test box, the differential mechanism is located the test box inside, the test box includes the lower box and closes the upper box lid in lower box open-ended department, connect through connecting bolt between lower box and the upper box lid, the left and right sides of test box is worn to be equipped with the output through-hole with central line and with the inside intercommunication of test box respectively along controlling the direction, the output through-hole is closed up by the output through-slot that opens respectively on lower box and upper box lid and is formed, two output of differential mechanism are connected in two output through-holes through output support bearing rotation respectively, still be provided with the torsion axle that extends along controlling the direction in the test box, the left and right sides of test box and the position of corresponding torsion axle wear to be equipped with the same central line and with the input through-hole of test box inside intercommunication respectively along controlling the direction, the input through-hole is closed up by the input through-slot that opens respectively on lower box and upper box lid respectively, the both ends of torsion axle are rotated through input support bearing and are connected in two input through-holes respectively, torsion axle with the same gear coupling with the spline of torsion;

the left and right sides outside the test box are provided with differential mechanism locking device respectively, differential mechanism locking device includes the locking axle that extends along left and right directions and is fixed and be used for carrying out the supporting seat that supports to the locking axle with the locking axle, be provided with the external spline on the one end axle body of locking axle orientation test box, the locking axle meshes with the interior spline housing on the output of the differential mechanism of its homonymy through the external spline, one side outside the test box still is provided with torsion drive arrangement, torsion drive arrangement passes through torsion drive arrangement and is connected with the one end transmission of the torsion axle of its place side.

In the utility model, the differential is supported in the test case, and the input teeth on the differential are meshed with the torsion gear; locking shafts on the left side and the right side of the test box respectively correspond to output ends on the two sides of the differential mechanism, and external spline ends of the locking shafts extend into the output through holes and are engaged with internal spline sleeves on the output ends of the differential mechanism; then fixing the locking shaft on the supporting seat, and further locking and fixing the output end of the differential mechanism; and then starting the torsion driving device to provide corresponding torsion for the torsion shaft, so as to realize torsion fatigue test of the differential mechanism.

As the optimization, torque drive device stretch out towards one side of test box have with the rotation axis that the torque shaft is with the central line setting, be equipped with on the rotation axis with the central line cover with the rotatory cover of rotation axis key connection, the torque shaft orientation the cover be equipped with on torque drive device's the one end axle body with the torque shaft is with central line and spline connection's torsion cover, torque drive device is including being located between swivel housing and the torsion cover and with transmission shaft that the central line set up, is connected through the flange between one end of transmission housing and the swivel housing, and one end of transmission shaft stretches into in the transmission housing and with transmission housing key connection, is connected through the flange between the other end of transmission shaft and the torsion cover. The transmission structure is simple and the service performance is reliable.

As the optimization, unable adjustment base includes fixed roof and the fixed bottom plate of relative setting from top to bottom, fixed roof and fixed bottom plate are the rectangular shaped plate that extends along the fore-and-aft direction, be provided with horizontal backup pad respectively along being close to the position at its fore-and-aft direction both ends between fixed roof and the fixed bottom plate, horizontal backup pad respectively with fixed roof and fixed bottom plate fixed connection, horizontal backup pad is vertical setting and extends to fixed roof and fixed bottom plate width direction's both ends department along the left and right directions, be provided with vertical backup pad between two horizontal backup pads, vertical backup pad is vertical setting and extends to two horizontal backup pad departments along the fore-and-aft direction, vertical backup pad is located fixed roof and fixed bottom plate along its width direction's intermediate position, vertical backup pad respectively with fixed roof, fixed bottom plate and two horizontal backup pad fixed connection, test box fixed connection is on fixed roof's top surface. The support is stable, and the processing and the manufacturing are simple and convenient.

As the optimization, be provided with two sets of box fixed orificess relatively along left and right directions on the fixed roof, the quantity of every box fixed orificess is a plurality of and along the even interval setting of fore-and-aft direction, and the box fixed orificess is perforation and extends along vertical direction, the adjustment cushion has been arranged in respectively to the position that corresponds every box fixed orificess on the top surface of fixed roof, and the top surface and the bottom surface of adjustment cushion are the level setting, and the U type hole that the level extends has been seted up to the side of adjustment cushion, and the projection of box fixed orificess along vertical direction is located its projection that corresponds U type hole along vertical direction, down the box is arranged in on the top surface of all adjustment cushion, down the box be provided with box fixing bolt respectively corresponding to each adjustment cushion's position, down box, U type hole and box fixing bolt are located the screw-thread fit has box fixing nut on the pole body of fixed roof below, box fixing nut supports tightly on the fixed bottom surface in order to fix down the cushion. The different types and sizes of differential mechanisms are different in corresponding used test boxes, and the positions of the test boxes are adjusted through the cushion blocks, so that the installation requirements of the locking shaft and the torsion transmission device are met.

As the optimization, the one end fixedly connected with that the locking axle kept away from it goes up external spline is with the fixed cover that the central line set up, and the fixed cover is facing away from evenly the interval is provided with a plurality of axle fixing screw holes around fixed cover central line direction on the side of one side of locking axle, axle fixing screw extends along left and right sides direction and sets up, the supporting seat includes the supporting baseplate that the level set up, fixedly connected with supports the riser on the top surface of supporting baseplate, the central line direction perpendicular to that the locking axle supports the riser place plane, the one side of supporting riser facing away from the test box be provided with respectively with supporting riser and supporting baseplate fixed connection's deep floor, the fixed cover is facing away from the one side butt of locking axle is on supporting riser, the supporting riser is worn to be equipped with respectively with the screw perforation rather than corresponding axle fixing nut with the central line on the side of fixed riser, and the position that corresponds each screw perforation is provided with axle fixing bolt respectively, and the pole portion of axle fixing bolt passes in the screw perforation and threaded connection is in order to fix the fixed cover on supporting riser in the place of axle fixing screw hole. After the locking shaft is matched with the internal spline sleeve at the output end of the differential mechanism, the supporting vertical plate is corresponding to the fixed sleeve, and each shaft fixing bolt is screwed on, so that the locking shaft can be fixedly supported on the supporting vertical plate.

Compared with the prior art, the utility model has the following advantages: the utility model has simple structure, utilizes the locking shaft to be matched and locked with the internal spline housing at the output end of the differential mechanism, and then simulates the torque provided for the input end of the differential mechanism through the torque driving device, thereby testing the torsional fatigue of the differential mechanism, and has reliable test and convenient use.

Drawings

Fig. 1 is a schematic three-dimensional structure of the present utility model with an upper case cover opened.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present utility model more clear, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. It will be apparent that the described embodiments are some, but not all, embodiments of the utility model. The components of the embodiments of the present utility model generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the utility model, as presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures. In the description of the present utility model, it should be noted that, directions or positional relationships indicated by terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., are directions or positional relationships based on those shown in the drawings, or are directions or positional relationships conventionally put in use of the inventive product, are merely for convenience of describing the present utility model and simplifying the description, and are not indicative or implying that the apparatus or element to be referred to must have a specific direction, be constructed and operated in a specific direction, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," "third," and the like are used merely to distinguish between descriptions and should not be construed as indicating or implying relative importance. Furthermore, the terms "horizontal," "vertical," and the like do not denote a requirement that the component be absolutely horizontal or overhang, but rather may be slightly inclined. As "horizontal" merely means that its direction is more horizontal than "vertical", and does not mean that the structure must be perfectly horizontal, but may be slightly inclined. In the description of the present utility model, it should also be noted that, unless explicitly specified and limited otherwise, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

As shown in fig. 1, the testing structure of torsional fatigue of the differential mechanism in this specific embodiment includes a differential mechanism 1, a testing box and a fixing base located below the testing box for supporting the testing box, where the differential mechanism 1 is located inside the testing box, the testing box includes a lower box body 2 and an upper box cover covering the top opening of the lower box body 2, the lower box body 2 and the upper box cover are connected by a connecting bolt, the left and right sides of the testing box are respectively provided with an output through hole with the same center line and communicated with the inside of the testing box along the left and right directions, the output through holes are formed by folding output through grooves respectively provided on the lower box body 2 and the upper box cover, two output ends of the differential mechanism 1 are respectively connected at the two output through holes in a rotating way through output support bearings 3, torsion shafts 4 extending along the left and right directions are also provided in the testing box, the left and right sides of the testing box are respectively provided with input through holes with the same center line and communicated with the inside of the testing box, the input through holes are respectively provided with input through grooves respectively provided on the lower box body 2 and the upper box cover along the left and right directions, the two ends of the torsion shafts 4 are respectively connected with two torsion shafts 6 through the two torsion shafts 6 in a rotating way, and the two torsion shafts are respectively connected with the two torsion shafts 6 through the two torsion shafts are respectively provided with the input through the torsion shafts 6;

the left and right sides outside the test box are provided with differential mechanism locking device respectively, differential mechanism locking device includes the locking axle 7 that extends along left and right directions and is fixed and be used for carrying out the supporting seat that supports to locking axle 7 with locking axle 7, be provided with the external spline on the one end axle body of locking axle 7 towards the test box, the locking axle is through the external spline with the interior spline housing meshes on the output of differential mechanism 1 of its homonymy, one side outside the test box still is provided with torsion drive arrangement 8, torsion drive arrangement 8 is through torsion drive arrangement and the one end transmission of torsion axle 4 of its place side is connected.

In this embodiment, the torsion drive device 8 stretch out towards one side of test box have with the rotation axis that torsion axle 4 concentric line set up, be equipped with on the rotation axis concentric line cover with the rotatory cover 9 of rotating shaft key connection, torsion axle 4 orientation the cover is equipped with on the one end shaft body of torsion drive device 8 with torsion axle 4 concentric line and spline connection's torsion cover 11, torsion drive device is including being located between rotatory cover 9 and the torsion cover 11 and with transmission shaft 12 that the concentric line set up, is connected through the flange between one end of transmission sleeve 10 and the rotatory cover 8, and one end of transmission shaft 12 stretches into in transmission sleeve 10 and with transmission sleeve 10 key connection, is connected through the flange between the other end of transmission shaft 12 and the torsion cover 11.

In this embodiment, unable adjustment base includes fixed roof 13 and fixed bottom plate 14 that upper and lower relative set up, fixed roof 13 and fixed bottom plate 14 are the rectangular shaped plate that extends along the fore-and-aft direction, be provided with horizontal backup pad 15 between fixed roof 13 and the fixed bottom plate 14 along the position that is close to its fore-and-aft direction both ends respectively, horizontal backup pad 15 respectively with fixed roof 13 and fixed bottom plate 14 fixed connection, horizontal backup pad 15 is vertical setting and extend to fixed roof 13 and fixed bottom plate 14 width direction's both ends department along the left and right directions, be provided with vertical backup pad between two horizontal backup pads 15, vertical backup pad is vertical setting and extends to two horizontal backup pad 15 departments along the fore-and-aft direction, vertical backup pad is located fixed roof 13 and fixed bottom plate 14 along its width direction's intermediate position, vertical backup pad respectively with fixed roof 13, fixed bottom plate 14 and two horizontal backup pad 15 fixed connection, the test box fixed connection is on fixed roof 13's top surface.

In this embodiment, be provided with two sets of box fixed orifices relatively along left and right directions on the fixed roof 13, the quantity of every box fixed orifices of group is a plurality of and along the even interval setting of fore-and-aft direction, and the box fixed orifices is perforation and extends along vertical direction, adjust cushion 17 has been arranged respectively in to the position that corresponds every box fixed orifice on the top surface of fixed roof 13, and the top surface and the bottom surface of adjust cushion 17 are the level setting, and the U type hole that the level extends has been seted up to the side of adjust cushion 17, and the projection of box fixed orifices along vertical direction is located its projection that corresponds U type hole along vertical direction, down box 2 is arranged in on the top surface of all adjust cushion 17, down box 2 is provided with box fixing bolt respectively corresponding to each adjust cushion 17's position, and box fixing bolt's pole portion is worn in proper order down box 2, U type hole and box fixing hole, box fixing bolt is located the pole screw-thread fit on the body of fixed roof 13 below has box fixing nut, and box fixing nut is in order to be fixed on box 2 under on the bottom surface of fixed roof 13.

In this embodiment, the one end fixedly connected with that locking axle 7 kept away from its external splines is with the fixed sleeve 18 that sets up with the central line, and fixed sleeve 18 is facing away from evenly spaced around fixed sleeve 18 central line direction on the side of locking axle 7 is provided with a plurality of axle fixing screw, and axle fixing screw extends along controlling the direction and sets up, the supporting seat includes the supporting baseplate 19 that the level set up, fixedly connected with support riser 20 on the top surface of supporting baseplate 19, the central line direction perpendicular to of locking axle 7 supports riser 20 place plane, and support riser 20 is provided with the deep floor 16 with support riser 20 and supporting baseplate 19 fixed connection respectively on the side of supporting riser 20 facing away from the test box, and the fixed sleeve 18 is facing away from one side butt of locking axle 7 is on support riser 20, and support riser 20 is worn to be equipped with respectively with the screw perforation rather than corresponding axle fixing nut with the central line on the side of supporting riser 20 just corresponding to support riser 18 one side of screw and be provided with axle fixing bolt respectively in the position that each screw perforation, and the pole portion of axle fixing riser 20 passes corresponding to connect in order to fix screw on the fixed sleeve 20 with the fixed screw.

Finally, it is noted that the above-mentioned embodiments illustrate rather than limit the utility model, and that those skilled in the art will be understood that various changes in form and details may be made therein without departing from the spirit and scope of the utility model as defined by the appended claims.

Claims

1. A differential mechanism torsion fatigue test structure is characterized in that: the differential mechanism is positioned in the test box, the test box comprises a lower box body and an upper box cover which is covered at the opening of the top of the lower box body, the lower box body and the upper box cover are connected through connecting bolts, the left side and the right side of the test box are respectively provided with an output through hole which is coaxial and communicated with the inside of the test box in a penetrating way along the left-right direction, the output through holes are formed by folding output through grooves which are respectively arranged on the lower box body and the upper box cover, two output ends of the differential mechanism are respectively connected at the two output through holes in a rotating way through output support bearings, torsion shafts which extend along the left-right direction are also arranged in the test box, the positions of the left side and the right side of the test box and correspond to the torsion shafts are respectively provided with input through holes which are coaxial and communicated with the inside of the test box in a penetrating way along the left-right direction, the two ends of the torsion shafts are respectively formed by folding through input support bearings, the two ends of the torsion shafts are respectively connected at the two input through holes in a rotating way, the torsion shafts are sleeved with torsion shafts, and the torsion shafts are respectively engaged with the input teeth of the differential mechanism which are connected with the spline wheels;

2. The differential torsional fatigue testing structure of claim 1, wherein: the torque force driving device stretches out towards one side of the test box and has a rotating shaft which is arranged with the same center line as the torque force shaft, a rotating sleeve which is connected with a rotating shaft key is sleeved on the rotating shaft with the same center line, the torque force shaft faces towards one end shaft body of the torque force driving device, a torque force sleeve which is connected with the same center line as the torque force shaft and is in spline connection with the torque force shaft is sleeved on the torque force shaft body, the torque force driving device comprises a driving sleeve and a driving shaft which are arranged between the rotating sleeve and the torque force sleeve and are arranged with the same center line, one end of the driving sleeve is connected with the rotating sleeve through a flange, one end of the driving shaft stretches into the driving sleeve and is connected with the driving sleeve key, and the other end of the driving shaft is connected with the torque force sleeve through a flange.

3. The differential torsional fatigue testing structure of claim 1, wherein: the fixed base comprises a fixed top plate and a fixed bottom plate which are arranged up and down oppositely, the fixed top plate and the fixed bottom plate are rectangular plates extending along the front and back directions, transverse supporting plates are respectively arranged between the fixed top plate and the fixed bottom plate along positions close to the two ends of the fixed top plate and the fixed bottom plate along the front and back directions, the transverse supporting plates are respectively fixedly connected with the fixed top plate and the fixed bottom plate, the transverse supporting plates are vertically arranged and extend to the two ends of the fixed top plate and the fixed bottom plate along the left and right directions in the width directions, be provided with vertical support plate between two horizontal backup pads, vertical support plate is vertical setting and extends to two horizontal backup pads departments along the fore-and-aft direction, and vertical support plate is located fixed roof and fixed bottom plate along its width direction's intermediate position, vertical support plate respectively with fixed roof, fixed bottom plate and two horizontal backup pad fixed connection, test box fixed connection is on fixed roof's top surface.

4. A differential torsional fatigue testing structure according to claim 3, wherein: two sets of box fixed orifices are oppositely arranged on the fixed top plate along the left-right direction, the quantity of each set of box fixed orifices is a plurality of and is uniformly arranged at intervals along the front-back direction, the box fixed orifices are through holes and extend along the vertical direction, the positions corresponding to each box fixed orifice on the top surface of the fixed top plate are respectively provided with adjusting cushion blocks, the top surface and the bottom surface of each adjusting cushion block are horizontally arranged, the side edges of each adjusting cushion block are provided with horizontally extending U-shaped holes, the projections of the box fixed orifices along the vertical direction are positioned in the projections of the corresponding U-shaped holes along the vertical direction, the lower box is arranged on the top surfaces of all the adjusting cushion blocks, the positions of the lower box corresponding to each adjusting cushion blocks are respectively provided with box fixed bolts, the rod parts of the box fixed bolts sequentially penetrate through the lower box, the U-shaped holes and the box fixed orifices, the box fixed nuts are in threaded fit on the rod bodies below the fixed top plate, and the box fixed nuts are abutted to the bottom surface of the fixed top plate so as to fix the lower box on the adjusting cushion blocks.

5. The differential torsional fatigue testing structure of claim 1, wherein: the locking shaft is fixedly connected with a fixing sleeve which is arranged with the same central line at one end far away from an external spline on the locking shaft, a plurality of shaft fixing screw holes are uniformly and alternately arranged on the side surface of one side of the fixing sleeve, which is opposite to the locking shaft, around the central line direction of the fixing sleeve, the shaft fixing screw holes extend along the left and right directions, the supporting seat comprises a supporting bottom plate which is horizontally arranged, the top surface of the supporting bottom plate is fixedly connected with a supporting vertical plate, the central line direction of the locking shaft is perpendicular to the plane where the supporting vertical plate is positioned, a reinforcing rib plate which is fixedly connected with the supporting vertical plate and the supporting bottom plate respectively is arranged on the side of the supporting vertical plate, which is opposite to the test box, the fixed cover is opposite to one side butt of locking axle is on supporting the riser, and the position that the support riser corresponds the axle fixed screw of its place side wears to be equipped with respectively and corresponds the screw rod perforation of axle fixation nut homocenter line rather than, and the support riser is opposite to one side of fixed cover and corresponds each screw rod fenestrate position and be provided with axle fixing bolt respectively, and axle fixing bolt's pole portion passes in corresponding screw rod perforation and threaded connection in axle fixed screw department in order to fix fixed cover on the support riser.