CN216706622U

CN216706622U - Automatic press-fitting equipment for universal joint of automobile transmission shaft

Info

Publication number: CN216706622U
Application number: CN202122845771.9U
Authority: CN
Inventors: 尹文波; 王立为; 李凤臣; 刘勇; 张勇
Original assignee: Changchun Antong Industrial Co ltd
Current assignee: Changchun Antong Industrial Co ltd
Priority date: 2021-11-19
Filing date: 2021-11-19
Publication date: 2022-06-10
Anticipated expiration: 2031-11-19

Abstract

The utility model discloses automatic press-fitting equipment for a universal joint of an automobile transmission shaft, which comprises a bracket, wherein two groups of bearing cover positioning mechanisms which are oppositely arranged are movably arranged on the working table surface of the bracket in a front-back manner and are used for press-fitting a bearing cover onto a cross shaft on a flange fork positioning mechanism; a flange fork positioning mechanism is arranged between the two groups of bearing cover positioning mechanisms and is used for installing a cross shaft; a clamp spring conveying mechanism is vertically movably arranged above the bearing cover positioning mechanism and used for conveying the stored clamp springs to a cross shaft on the flange fork positioning mechanism; and a cross shaft positioning mechanism is movably arranged at the front and back of the rear side of the flange fork positioning mechanism and is used for positioning a cross shaft on the flange fork positioning mechanism. The automatic press-fitting equipment for the universal joint of the automobile transmission shaft, provided by the utility model, can realize the functions of automatic press-fitting of the bearing cover and automatic assembly of the snap spring, is high in production efficiency and reliable in press-fitting quality, and can greatly reduce the labor intensity of workers.

Description

Automatic press-fitting equipment for universal joint of automobile transmission shaft

Technical Field

The utility model relates to the technical field of automobile part processing devices, in particular to automatic press-fitting equipment for an automobile transmission shaft universal joint.

Background

The assembling of the universal joint of the automobile transmission shaft comprises two processes of bearing cover press fitting and clamp spring assembling. At present, most of domestic production enterprises adopt an assembly mode that a bearing cover is pressed by an oil press and then a snap spring is manually arranged. The labor intensity is high, and the production efficiency is low. Particularly, today, the automobile industry is developed from automation to intellectualization, the assembling mode is not suitable for the development of the era, and therefore, an assembling device with higher automation degree needs to be designed.

SUMMERY OF THE UTILITY MODEL

Aiming at the technical problem, the utility model provides automatic press-fitting equipment for the universal joint of the automobile transmission shaft.

In order to achieve the above purpose, the utility model provides the following technical scheme:

the automatic press-fitting equipment for the universal joint of the automobile transmission shaft comprises a support, wherein two groups of bearing cover positioning mechanisms which are arranged oppositely are movably arranged on the working table surface of the support in a front-back mode and are used for press-fitting the bearing covers onto cross shafts on flange fork positioning mechanisms; a flange fork positioning mechanism is arranged between the two groups of bearing cover positioning mechanisms and is used for installing a cross shaft; a clamp spring conveying mechanism is vertically movably arranged above the bearing cover positioning mechanism and used for conveying the stored clamp springs to a cross shaft on the flange fork positioning mechanism; and a cross shaft positioning mechanism is movably arranged at the front and back of the rear side of the flange fork positioning mechanism and is used for positioning a cross shaft on the flange fork positioning mechanism.

Furthermore, the bearing cover positioning mechanism comprises a mounting frame, the mounting frame is fixed on the working table surface, the inner side of the mounting frame is connected with a main oil cylinder mounting plate through a sliding rail and a sliding block, a main oil cylinder is mounted on the main oil cylinder mounting plate, a cylinder rod of the main oil cylinder is connected with a push plate along the X-axis direction, the front end of the push plate is connected with a pressure rod and a pressure head, and a bearing cover positioning sleeve is sleeved on the pressure head; the master cylinder mounting plate slides around passing through the cylinder drive realization, and the cylinder body of cylinder is installed in the one end at the top of mounting bracket along the Y axle direction, and the master cylinder mounting plate is connected to the jar pole of cylinder, and the other end at the top of mounting bracket passes through the sensor mounting bracket and installs the sensor that targets in place.

Further, through flange oilless bush installation optical axis on the master cylinder mounting panel, the one end of optical axis passes through the optical axis fixing base along the X axle direction and connects the push pedal for the direction is controlled to the removal in the push pedal.

Further, flange fork positioning mechanism includes the ring flange positioning seat, and the ring flange positioning seat is fixed on the table surface of support, and ring flange positioning seat top installation location ring flange, the cylinder mounting panel is connected through the spliced pole to ring flange positioning seat below, and the location cylinder is installed to cylinder mounting panel below, and the jar pole of location cylinder passes the lower extreme of through-hole connection locating pin on the cylinder mounting panel, and the upper end of locating pin passes ring flange positioning seat and location ring flange in proper order and exposes in the location ring flange upper surface, still be provided with the work piece on the location ring flange and target in place the gauge rod, the maximum height that the work piece targets in place the gauge rod is less than the maximum height of locating pin, and the work piece targets in place the gauge rod through the spring activity in the through-hole of location ring flange and ring flange positioning seat and its lower extreme sets up the sensor.

Furthermore, the clamp spring conveying mechanism comprises C-shaped frames, the C-shaped frames are fixed on the working table surface of the support, vertical cylinders are fixed at the tops of the C-shaped frames and are arranged into two groups and respectively located on two sides of the tops of the C-shaped frames, and guide sliding rods are arranged on two sides of each group of vertical cylinders; a cylinder rod of the vertical cylinder is downwards connected with a spring storage mechanism through a Z-shaped connecting plate, the spring storage mechanism locks a spring through a spring locking mechanism, the spring storage mechanism and the spring locking mechanism are driven by the vertical cylinder to synchronously move up and down, and the spring locking mechanism drives the horizontal cylinder to horizontally slide.

Further, spring storage mechanism includes the feed bin fixed plate, and jump ring storage silo is connected to feed bin fixed plate downside, and the jump ring cup joints outside jump ring storage silo, and two jump ring output push pedals are established to the cover on the jump ring storage silo, and every jump ring output push pedal passes through the drive of jump ring output servo motor and outwards releases the jump ring, and two jump ring output servo motor fix respectively at the both ends of feed bin fixed plate.

Furthermore, a clamp spring in-place detection sensor is installed on the front side of the clamp spring storage bin.

Further, the spring locking mechanisms are arranged into two groups and located at two ends of the spring storage mechanism respectively, each spring locking mechanism comprises a locking servo motor, a gear shaft and clamping jaws, a cylinder body of the locking servo motor is fixed on a locking mechanism mounting plate through a servo motor mounting frame, a cylinder rod of the locking servo motor is connected with the gear shaft, a driving gear is sleeved on the gear shaft, driven gear shafts are arranged beside the gear shaft in parallel, driven gears are sleeved on the driven gear shafts and meshed with the driving gear, the gear shaft and the driven gear shafts are supported through gear shaft frames, the ends of the gear shaft and the driven gear shaft are connected with one clamping jaw respectively, a limiting screw is arranged beside each clamping jaw respectively, the limiting screws are installed on the gear shaft frames, a tooth gap adjusting spring is arranged between the two clamping jaws, and the tooth gap adjusting spring is installed on the gear shaft frames.

Furthermore, the locking mechanism mounting plate slides on the clamp spring conveying mechanism mounting plate through a guide rail and a sliding block.

Furthermore, the cross shaft positioning mechanism comprises a guide mounting frame, the guide mounting frame is fixed on the working table surface, a positioning support plate pushing cylinder is horizontally mounted on the guide mounting frame, a cylinder rod of the positioning support plate pushing cylinder is connected with the cross shaft positioning support plate, and the cross shaft positioning support plate is positioned on one side close to the flange fork positioning mechanism.

Compared with the prior art, the utility model has the beneficial effects that:

the automatic press-fitting equipment for the universal joint of the automobile transmission shaft, provided by the utility model, can realize the functions of automatic press-fitting of the bearing cover and automatic assembly of the snap spring, is high in production efficiency and reliable in press-fitting quality, and can greatly reduce the labor intensity of workers.

Drawings

In order to more clearly illustrate the embodiments of the present application or technical solutions in the prior art, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments described in the present invention, and other drawings can be obtained by those skilled in the art according to the drawings.

Fig. 1 is a schematic structural diagram of an automatic press-fitting device for an automotive transmission shaft universal joint according to an embodiment of the present invention.

Fig. 2 is a schematic structural diagram of a spray bearing cap positioning mechanism according to an embodiment of the present invention.

Fig. 3 is a schematic structural diagram of a flange yoke positioning mechanism according to an embodiment of the present invention.

Fig. 4 is a schematic structural diagram of a circlip conveying mechanism and a cross shaft positioning mechanism provided in an embodiment of the present invention.

Fig. 5 is a schematic structural diagram of a spring storage mechanism and a spring locking mechanism provided in an embodiment of the present invention.

Fig. 6 is a schematic structural diagram of a spring storage mechanism according to an embodiment of the present invention.

Fig. 7 is a schematic structural diagram of a spring locking mechanism according to an embodiment of the present invention.

Detailed Description

In order to make the technical solutions of the present invention better understood by those skilled in the art, the present invention will be further described in detail with reference to the accompanying drawings and examples.

As shown in fig. 1, the automatic press-fitting device for the universal joint of the automobile transmission shaft provided by the utility model comprises a bracket 100, a bearing cover positioning mechanism 200, a flange fork positioning mechanism 300, a snap spring conveying mechanism 400, a spring storage mechanism 500, a spring locking mechanism 600 and a cross shaft positioning mechanism 700. For protection, the support 100 is further provided with a safety fence 101, a safety protection plate 102 and the like.

Two sets of bearing cap positioning mechanisms 200 which are arranged oppositely are movably arranged on the working table surface of the bracket 100 in a front-back manner and are used for pressing the bearing caps onto the cross shafts on the flange fork positioning mechanisms 300; a flange fork positioning mechanism 300 is arranged between the two groups of bearing cover positioning mechanisms 200 and is used for mounting a cross shaft; a clamp spring conveying mechanism 400 is vertically and movably arranged above the bearing cover positioning mechanism 200 and used for conveying the stored clamp springs to a cross shaft on the flange fork positioning mechanism 300; a spider positioning mechanism 700 is movably arranged at the rear side of the flange yoke positioning mechanism 300 in the front-back direction and is used for positioning a spider on the flange yoke positioning mechanism 300.

The bearing cap positioning mechanism 200 is an equipment main body, and the function of the bearing cap positioning mechanism is to avoid a pressure head when the bearing cap is pressed and the snap spring is assembled. The press mounting power is a main oil cylinder, the two sides synchronously move relative to each other during press mounting, and the action process is as follows: fast forward, working forward, pressure maintaining and fast backward. In addition, when the clamp spring is assembled, the servo press-fitting mechanism needs to be pushed out of the press-fitting position under the pushing of the cylinder, so that interference is avoided. The servo electric cylinder has good synchronism, the repetition precision reaches 0.02mm, and the servo electric cylinder is matched with a pressure sensor for use, so that the one-time press-fitting requirement of the bearing cover can be completely met.

As shown in fig. 2, the bearing cap positioning mechanism 200 includes a mounting frame 201, the mounting frame is fixed on a working table, the inner side of the mounting frame 201 is connected to a main cylinder mounting plate 202 through a slide rail and a slide block, a main cylinder 203 is mounted on the main cylinder mounting plate 202, a cylinder rod of the main cylinder 203 is connected to a push plate 204 along an X-axis direction, the front end of the push plate 204 is connected to a press rod 205 and a press head 206, and a bearing cap positioning sleeve 207 is sleeved on the press head 206; the main oil cylinder mounting plate 202 is driven by an air cylinder 208 to slide back and forth, the cylinder body of the air cylinder 208 is mounted at one end of the top of the mounting frame 201 along the Y-axis direction, the cylinder rod of the air cylinder 208 is connected with the main oil cylinder mounting plate 202, and the other end of the top of the mounting frame 201 is mounted in place by a sensor mounting frame 209. The main oil cylinder mounting plate 202 is provided with an optical axis 212 through a flange oilless bushing 211, and one end of the optical axis 212 is connected with the push plate 204 through an optical axis fixing seat 213 along the X-axis direction, so that the push plate 204 can move left and right to guide.

The flange yoke positioning mechanism 300 has the main functions of positioning the flange yoke and detecting whether the flange yoke is installed in place.

As shown in fig. 3, the flange yoke positioning mechanism 300 includes a flange positioning seat 301, the flange positioning seat 301 is fixed on the working table of the bracket, a positioning flange 302 is installed above the flange positioning seat 301, and the positioning flange 302 can be designed to be suitable for a spline yoke and a welding yoke; the cylinder mounting panel 304 is connected below the flange plate positioning seat 301 through a connecting column 303, the positioning cylinder 305 is installed below the cylinder mounting panel 304, the cylinder rod of the positioning cylinder 305 passes through a through hole in the cylinder mounting panel 304 to be connected with the lower end of the positioning pin 306, the upper end of the positioning pin 306 sequentially passes through the flange plate positioning seat 301 and the positioning flange plate 302 and is exposed on the upper surface of the positioning flange plate 302, a workpiece in-place detection rod 307 is further arranged on the positioning flange plate 302, the maximum height of the workpiece in-place detection rod 307 is smaller than the maximum height of the positioning pin 306, and the workpiece in-place detection rod 307 is movably arranged in the through holes of the positioning flange plate 302 and the flange plate positioning seat 301 through a spring and the lower end of the workpiece in-place detection rod 307 is provided with a sensor.

The specific working process is as follows: the spline fork is manually placed on the positioning flange plate, the positioning pin is inserted into the positioning hole of the spline fork, if the spline fork is installed in place, the workpiece in-place detection rod is pressed down and is detected by the lower end sensor, the workpiece is correctly placed, the equipment can perform the next operation, and otherwise, the equipment alarms and does not act when performing the next operation. And after the assembly of the clamp spring is finished, the positioning pin retracts under the pushing of the cylinder, and the workpiece is manually taken down. At the moment, the workpiece in-place detection rod is ejected out under the action of spring force, and the positioning cylinder acts again to push out the positioning pin so as to prepare for positioning the next workpiece.

As shown in fig. 4, the clamp spring conveying mechanism 400 includes C-shaped frames 401, the C-shaped frames 401 are fixed on the working table of the support, vertical cylinders 402 are fixed at the top of the C-shaped frames 401, the two groups of vertical cylinders 402 are respectively located at two sides of the top of the C-shaped frames 401, and guide slide rods 403 are arranged at two sides of each group of vertical cylinders 402; the cylinder rod of the vertical cylinder 402 is connected with the spring storage mechanism 500 downwards through the Z-shaped connecting plate 404, as shown in FIG. 5, the spring storage mechanism 500 locks the spring through the spring locking mechanism 600, the spring storage mechanism 500 and the spring locking mechanism 600 are driven by the vertical cylinder 402 to synchronously move up and down, and the spring locking mechanism 600 is driven by the horizontal cylinder 614 to horizontally slide.

As shown in fig. 5 and 6, the spring storage mechanism 500 includes a bin fixing plate 501, a clamp spring storage bin 502 is connected to the lower side of the bin fixing plate 501, the clamp spring storage bin 502 is composed of two parallel clamp spring cams, a clamp spring is sleeved outside the clamp spring storage bin 502, two clamp spring output push plates 503 are sleeved on the clamp spring storage bin 502, each clamp spring output push plate 503 is driven by a clamp spring output servo motor 504 to push out a clamp spring outwards, the clamp spring output servo motor 504 is driven by a lead screw and a nut and is in transmission with the clamp spring output push plates 503, and the two clamp spring output servo motors 504 are respectively fixed at two ends of the bin fixing plate 501. A clamp spring in-position detection sensor 505 is mounted on the front side of the clamp spring storage bin 502.

As shown in fig. 5 and 7, the spring locking mechanisms 600 are arranged in two groups and located at two ends of the spring storage mechanism 500 respectively, each group of spring locking mechanisms 600 includes a locking servo motor 601, a gear shaft 602 and a clamping jaw 603, a cylinder of the locking servo motor 601 is fixed on a locking mechanism mounting plate 605 through a servo motor mounting frame 604, the locking mechanism mounting plate 605 slides on a clamp spring conveying mechanism mounting plate 606 through a guide rail and a slider, and a sensor 615 is mounted on the clamp spring conveying mechanism mounting plate 606. A cylinder rod of a locking servo motor 601 is connected with a gear shaft 602, a driving gear 607 is sleeved on the gear shaft 602, a driven gear shaft 608 is arranged beside the gear shaft 602 in parallel, a driven gear 609 is sleeved on the driven gear shaft 608, the driving gear 607 is meshed with the driven gear 609, the gear shaft 606 and the driven gear shaft 608 are supported by a gear shaft frame 610, the end parts of the gear shaft 602 and the driven gear shaft 608 are respectively connected with a clamping jaw 603, a limit screw 611 is arranged beside each clamping jaw 603 respectively, the limit screw 611 is arranged on the gear shaft frame 610, a backlash adjusting spring 612 is arranged between the two clamping jaws 603, the backlash adjusting spring 612 is arranged on the gear shaft frame 610, and limit plates 613 are fixed on two sides of the gear shaft frame 610.

The clamp spring storage mechanism and the locking mechanism have the main functions of clamp spring storage, clamp spring output, clamp spring grabbing and clamp spring loading into flange fork ear holes for conveying. The mechanism has the main function of grabbing the clamp spring pushed out by the clamp spring bin and necking the clamp spring to the installation size. The specific working process comprises the following steps: the clamp springs are manually loaded into the storage bins (60 storage bins on two sides are respectively loaded), the clamp spring output servo motor drives the push plate to push the clamp springs out of the storage bins during working, the clamp spring locking mechanism is butted with the storage bins under the pushing of the horizontal cylinder, the outermost clamp spring ear hole of the storage bins is sleeved on the pin on the clamp spring grabbing clamping jaw, the sensor 615 locks the servo motor to drive the gear shaft to rotate after detecting in place, the clamp springs are contracted to the specified size and stopped, and then the horizontal cylinder drives the grabbing mechanism to retract.

The clamp spring conveying mechanism and the cross shaft positioning mechanism have the main functions of positioning the cross shaft and pushing the clamp spring storing and locking mechanism to the position matched with the lug hole of the flange fork.

As shown in fig. 4, the cross shaft positioning mechanism 700 includes a guiding mounting frame 701, the guiding mounting frame 701 is fixed on the working table, a positioning support plate pushing cylinder 702 is horizontally installed on the guiding mounting frame 701, a cylinder rod of the positioning support plate pushing cylinder 702 is connected with a cross shaft positioning support plate 703, and the cross shaft positioning support plate 703 is located at a side close to the flange yoke positioning mechanism 300.

The equipment adopts a manual loading and unloading mode to automatically complete all functions of bearing cover press fitting, automatic clamp spring taking and automatic clamp spring loading. The bearing cover can realize simultaneous press mounting of two sides, the clamp spring is fed in once, and press mounting is carried out in place twice.

On the basis of not needing to adorn the jump ring, as long as change locating flange dish and pressure head, alright realize the disposable pressure equipment of different specification flange fork bearing covers.

The automatic press-fitting device can realize the functions of automatic press-fitting of the bearing cover and automatic assembly of the snap spring, has high production efficiency and reliable press-fitting quality, and can greatly reduce the labor intensity of workers.

The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: it is to be understood that modifications may be made to the technical solutions described in the foregoing embodiments, or equivalents may be substituted for some of the technical features thereof, but such modifications or substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. The automatic press-fitting equipment for the universal joint of the automobile transmission shaft is characterized by comprising a support, wherein two groups of bearing cover positioning mechanisms which are arranged oppositely are movably arranged on a working table top of the support in a front-back mode and are used for press-fitting a bearing cover onto a cross shaft on a flange fork positioning mechanism; a flange fork positioning mechanism is arranged between the two groups of bearing cover positioning mechanisms and is used for installing a cross shaft; a clamp spring conveying mechanism is vertically movably arranged above the bearing cover positioning mechanism and used for conveying the stored clamp springs to a cross shaft on the flange fork positioning mechanism; and a cross shaft positioning mechanism is movably arranged at the front and back of the rear side of the flange fork positioning mechanism and is used for positioning a cross shaft on the flange fork positioning mechanism.

2. The automatic press-fitting equipment for the universal joint of the automobile transmission shaft as claimed in claim 1, wherein the bearing cover positioning mechanism comprises a mounting frame, the mounting frame is fixed on the working table, the inner side of the mounting frame is connected with a main oil cylinder mounting plate through a sliding rail and a sliding block, a main oil cylinder is mounted on the main oil cylinder mounting plate, a cylinder rod of the main oil cylinder is connected with a push plate along the X-axis direction, the front end of the push plate is connected with a pressure rod and a pressure head, and a bearing cover positioning sleeve is sleeved on the pressure head; the master cylinder mounting plate slides around passing through the cylinder drive realization, and the cylinder body of cylinder is installed in the one end at the top of mounting bracket along the Y axle direction, and the master cylinder mounting plate is connected to the jar pole of cylinder, and the other end at the top of mounting bracket passes through the sensor mounting bracket and installs the sensor that targets in place.

3. The automatic press fitting equipment for the universal joint of the automobile transmission shaft as claimed in claim 2, wherein the main oil cylinder mounting plate is provided with an optical axis through a flange oilless bushing, and one end of the optical axis is connected with the push plate through an optical axis fixing seat along an X-axis direction for left-right movement guiding of the push plate.

4. The automatic press-fitting equipment for the universal joint of the automobile transmission shaft as claimed in claim 1, the flange fork positioning mechanism comprises a flange plate positioning seat, the flange plate positioning seat is fixed on the working table surface of the support, a positioning flange plate is arranged above the flange plate positioning seat, the lower part of the flange plate positioning seat is connected with a cylinder mounting plate through a connecting column, a positioning cylinder is arranged below the cylinder mounting plate, a cylinder rod of the positioning cylinder penetrates through a through hole in the cylinder mounting plate to be connected with the lower end of a positioning pin, the upper end of the positioning pin sequentially penetrates through the flange plate positioning seat and the positioning flange plate and is exposed on the upper surface of the positioning flange plate, the positioning flange plate is also provided with a workpiece in-place detection rod, the maximum height of the workpiece in-place detection rod is smaller than that of the positioning pin, the workpiece in-place detection rod is movably arranged in through holes of the positioning flange plate and the flange plate positioning seat through a spring, and the lower end of the workpiece in-place detection rod is provided with a sensor.

5. The automatic press-fitting equipment for the universal joint of the automobile transmission shaft according to claim 1, wherein the clamp spring conveying mechanism comprises C-shaped frames, the C-shaped frames are fixed on a working table surface of a support, vertical air cylinders are fixed at the tops of the C-shaped frames, the vertical air cylinders are arranged in two groups and are respectively positioned on two sides of the tops of the C-shaped frames, and guide sliding rods are arranged on two sides of each group of vertical air cylinders; a cylinder rod of the vertical cylinder is downwards connected with a spring storage mechanism through a Z-shaped connecting plate, the spring storage mechanism locks a spring through a spring locking mechanism, the spring storage mechanism and the spring locking mechanism are driven by the vertical cylinder to synchronously move up and down, and the spring locking mechanism drives the horizontal cylinder to horizontally slide.

6. The automatic press-fitting equipment for the universal joint of the automobile transmission shaft according to claim 5, wherein the spring storage mechanism comprises a bin fixing plate, a clamp spring storage bin is connected to the lower side of the bin fixing plate, the clamp spring is sleeved outside the clamp spring storage bin, two clamp spring output push plates are sleeved on the clamp spring storage bin, each clamp spring output push plate is driven by a clamp spring output servo motor to push the clamp spring outwards, and the two clamp spring output servo motors are respectively fixed at two ends of the bin fixing plate.

7. The automatic press-fitting equipment for the universal joint of the automobile transmission shaft as claimed in claim 6, wherein a clamp spring in-place detection sensor is mounted on the front side of the clamp spring storage bin.

8. The automatic press-fitting device for the universal joint of the automobile transmission shaft according to claim 5, wherein the spring locking mechanisms are arranged in two groups and respectively located at two ends of the spring storage mechanism, each group of spring locking mechanisms comprises a locking servo motor, a gear shaft and clamping jaws, a cylinder body of the locking servo motor is fixed on a locking mechanism mounting plate through a servo motor mounting frame, a cylinder rod of the locking servo motor is connected with the gear shaft, a driving gear is sleeved on the gear shaft, driven gear shafts are parallelly arranged beside the gear shaft, driven gears are sleeved on the driven gear shafts, the driving gear is meshed with the driven gears, the gear shaft and the driven gear shafts are supported through a gear shaft frame, the ends of the gear shaft and the driven gear shaft are respectively connected with one clamping jaw, a limit screw is respectively arranged beside each clamping jaw, the limit screws are arranged on the gear shaft frame, and a backlash adjusting spring is arranged between the two clamping jaws, the backlash adjusting spring is arranged on the gear shaft bracket.

9. The automatic press-fitting equipment for the universal joint of the automobile transmission shaft as claimed in claim 8, wherein the locking mechanism mounting plate slides on the clamp spring conveying mechanism mounting plate through a guide rail and a slide block.

10. The automatic press-fitting equipment for the universal joint of the automobile transmission shaft as claimed in claim 1, wherein the cross shaft positioning mechanism comprises a guide mounting frame, the guide mounting frame is fixed on the working table, a positioning support plate pushing cylinder is horizontally mounted on the guide mounting frame, a cylinder rod of the positioning support plate pushing cylinder is connected with a cross shaft positioning support plate, and the cross shaft positioning support plate is located on one side close to the flange fork positioning mechanism.