Automobile gear shaft coaxiality detection device

Abstract

The utility model relates to an automobile gear shaft coaxiality detection device which comprises a base, an electric push rod is vertically arranged on the base, a test meter is fixed on the electric push rod, a moving mechanism is arranged on the base, a positioning mechanism is arranged on the moving mechanism, a lubricating mechanism is arranged on the positioning mechanism, and the positioning mechanism comprises an installation box, a gas collection box and an air pump. Two mounting boxes are arranged on the base, two rotating discs are rotatably arranged on the inner sides of the upper ends of the mounting boxes in a matched mode, supporting frames are fixed to the outer sides of the mounting boxes, piston cylinders are fixed to the upper ends of the supporting frames, piston plates are tightly installed in the piston cylinders in a sliding mode, piston rods are fixed to one sides of the piston plates, and fixing frames are fixed to one ends of the piston rods. And a jacking roller column is rotationally mounted in the fixing frame. The automobile gear shaft coaxiality detection device is provided with the positioning mechanism, and when the coaxiality of the gear shaft needs to be tested, the gear shaft can be quickly positioned and limited through the positioning mechanism, so that the subsequent test of the gear shaft is facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of coaxiality detection, in particular to a coaxiality detection device for an automobile gear shaft. Background Technique

[0002] Coaxiality measurement is used to control the coaxiality error of the measured axis of a shaft part with respect to the reference axis. A gear shaft is a mechanical part that supports a rotating part and rotates with it to transmit motion, torque, or bending moment. It is a workpiece obtained by turning on a lathe. There will be errors during its processing, and it is necessary to detect the coaxiality of the processed gear shaft.

[0003] In the existing detection devices, the performance of fixing the two ends of the gear is poor, and the phenomenon of shaft jumping is likely to occur during rotation. Since the rotating disk for the lower-end rotation fit is exposed to the air, it is extremely vulnerable to corrosion by water vapor and oxygen in the air, resulting in an uneven surface of the rotating disk. This makes the rotation of the overall gear driven by the rotating disk unstable, which reduces the accuracy of the instrument's measurement of the gear. In view of this, a coaxiality detection device for an automobile gear shaft is proposed to solve the above problems. Content of the Utility Model

[0004] The main purpose of the utility model is to provide a coaxiality detection device for an automobile gear shaft, which solves the problems put forward in the above background technique.

[0005] To achieve the above purpose, the utility model provides the following technical solution: A coaxiality detection device for an automobile gear shaft, including a base, an electric push rod is vertically arranged on the base, a test meter is fixed on the electric push rod, a moving mechanism is arranged on the base, a positioning mechanism is arranged on the moving mechanism, and a lubricating mechanism is arranged on the positioning mechanism;

[0006] The positioning mechanism includes an installation box, an air collecting box and an air pump. Two installation boxes are arranged on the base. Two rotating disks are rotatably fitted inside the upper end of the installation box. A support frame is fixed outside the installation box. A piston cylinder is fixed at the upper end of the support frame. A piston plate is closely and slidably installed inside the piston cylinder. One side of the piston plate is fixed with a piston rod. One end of the piston rod is fixed with a fixing frame. A pressing roller is rotatably installed inside the fixing frame;

[0007] An air pump and an air collecting box are sequentially fixed on the side wall of the base. The air outlet end of the air pump is communicated with the air collecting box. An air supply pipe is communicated between one side of the air collecting box and the piston cylinder.

[0008] Further, an air discharge pipe for discharging the gas in the air collecting box is fixed on the air collecting box, and an electromagnetic valve is fixed on the air discharge pipe.

[0009] Further, the pressing roller is located in the middle inside the support frame, and one of the rotating disks is driven to rotate by an external first motor.

[0010] Furthermore, the lubrication mechanism includes a pump body, a shunt pipe, a filter screen, and a scraper. The pump body is fixedly installed on the installation box. The water inlet end of the installation box is communicated with a feed pipe, and the water outlet end of the pump body is communicated with a discharge pipe. Shunt pipes are fixedly installed on both inner walls of the installation box, and a plurality of nozzles for spraying lubricating oil onto the surface of the rotating disk are fixed on one side of the shunt pipe.

[0011] Furthermore, scrapers for scraping off the excess lubricating liquid on the surface of the rotating disk are fixedly installed on both inner walls of the installation box, and a filter screen is horizontally arranged in the installation box.

[0012] Furthermore, the moving mechanism includes a fixed plate, a threaded rod, a limiting rod, and a mounting plate. A rotatable threaded rod is horizontally arranged in the base, and one end of the threaded rod is driven to rotate by an external second motor. Two sliders that can move relatively or away from each other are in threaded cooperation with the threaded rod. One end of each slider is fixed to the bottom end of the installation box. Fixed mounting plates are fixedly installed on both sides of the installation box, fixed plates are fixedly installed on both sides of the base, a limiting rod is fixed between the two fixed plates, and through holes for sliding connection with the limiting rod are formed in the mounting plate.

[0013] Compared with the prior art, the technical solution of this application has the following beneficial effects:

[0014] 1. For this coaxiality detection device of an automotive gear shaft, by providing a positioning mechanism, when it is necessary to test the coaxiality of the gear shaft, the positioning mechanism can be used to quickly position and limit it, thus facilitating subsequent testing of the gear shaft.

[0015] 2. For this coaxiality detection device of an automotive gear shaft, by providing a lubrication mechanism, when it is necessary to lubricate the rotating disk, the lubrication mechanism can evenly cover the surface of the rotating disk with lubricating oil, which has the effect of isolating air, thereby making the rotating disk not easily corrode and rust, and maintaining its stability in rotating the hollow shaft. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a structural schematic diagram of the present utility model;

[0017] Figure 2 is a structural schematic diagram of the support frame and the piston cylinder of the present utility model;

[0018] Figure 3 is a structural schematic diagram of the positioning mechanism of the present utility model;

[0019] Figure 4 is a side view structural schematic diagram of the pump body and the feed pipe of the present utility model.

[0020] In the figure: 1 base, 2 electric push rod, 3 test meter, 4 moving mechanism, 401 fixing plate, 402 threaded rod, 403 limiting rod, 404 mounting plate, 5 positioning mechanism, 501 air pump, 502 air collecting box, 503 air supply pipe, 504 mounting box, 505 support frame, 506 piston cylinder, 507 rotating disc, 508 pressing roller column, 509 piston plate, 510 piston rod, 511 fixing frame, 6 lubricating mechanism, 601 pump body, 602 feed pipe, 603 discharge pipe, 604 filter screen, 605 spray head, 606 shunt pipe, 607 scraper. Specific embodiments

[0021] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0022] Please refer to Figures 1-4 , a coaxiality detection device for an automotive gear shaft in this embodiment includes a base 1. An electric push rod 2 is vertically arranged on the base 1, and a test meter 3 is fixed on the electric push rod 2. By starting the electric push rod 2, the electric push rod 2 drives the test meter 3 to move downward, and the test part of the test meter 3 abuts against the surface of the gear shaft, so as to conveniently measure the concentricity of the gear shaft. The test meter 3 can be a dial indicator or a micrometer. The specific use method of the test meter 3 is the prior art, so it will not be elaborated here. A moving mechanism 4 is arranged on the base 1, a positioning mechanism 5 is arranged on the moving mechanism 4, and a lubricating mechanism 6 is arranged on the positioning mechanism 5.

[0023] The positioning mechanism 5 includes a mounting box 504, an air collecting box 502 and an air pump 501. Two mounting boxes 504 are arranged on the base 1. Two rotating discs 507 are rotatably fitted inside the upper end of the mounting box 504. A support frame 505 is fixed outside the mounting box 504. A piston cylinder 506 is fixed at the upper end of the support frame 505. A piston plate 509 is closely and slidably installed in the piston cylinder 506. A piston rod 510 is fixed on one side of the piston plate 509. One end of the piston rod 510 is fixed with a fixing frame 511. A pressing roller column 508 is rotatably installed in the fixing frame 511.

[0024] An air pump 501 and an air collecting box 502 are sequentially fixed on the side wall of the base 1. The air outlet end of the air pump 501 is communicated with the air collecting box 502. An air supply pipe 503 is communicated between one side of the air collecting box 502 and the piston cylinder 506.

[0025] The device places the gear shaft between two rotating discs 507. Then, by starting the air pump 501, the air pump 501 outputs gas into the air collection box 502. The air collection box 502 then transports the gas into the air supply pipe 503. The air supply pipe 503 further transports the gas into the piston cylinder 506. The gas pushes the piston rod 510 on the piston plate 509 to move. The piston rod 510 drives the fixed frame 511 to move. The fixed frame 511 drives the pressing roller column 508 to move downward, so that the pressing roller column 508 therein can cooperate with the upper side of the gear shaft, and the pressing roller column 508 can rotate in cooperation with the upper side end of the gear shaft.

[0026] Among them, a drain pipe for discharging the gas in the air collection box 502 is fixed on the air collection box 502. An electromagnetic valve is fixed on the drain pipe. When it is necessary to place the gear shaft between two rotating discs 507, the fixed frame 511 can be toggled to move upward. At this time, the electromagnetic valve is opened, so that the gas in the piston cylinder 506 can be discharged, and thus the fixed frame 511 can move upward.

[0027] At the same time, the pressing roller column 508 is located in the middle of the inner side of the support frame 505. One of the rotating discs 507 is driven to rotate by an external first motor, which is convenient for driving the rotating disc 507 to rotate, and then driving the gear shaft above it to rotate.

[0028] In addition, the moving mechanism 4 includes a fixed plate 401, a threaded rod 402, a limiting rod 403 and a mounting plate 404. A rotatable threaded rod 402 is horizontally arranged in the base 1. One end of the threaded rod 402 is driven to rotate by an external second motor. The threaded rod 402 is in threaded cooperation with two sliders that can move relatively or away from each other. One end of the slider is fixed to the bottom end of the mounting box 504. Fixed mounting plates 404 are fixed on both sides of the mounting box 504. Fixed plates 401 are fixed on both sides of the base 1. A limiting rod 403 is fixed between the two fixed plates 401. Through holes for sliding connection with the limiting rod 403 are opened on the mounting plate 404 to limit the rotation tendency of the slider and make it move horizontally, and to increase the stability of the mounting box 504 when it moves.

[0029] By starting the external second motor, the external second motor drives the threaded rod 402 to rotate, and then the threaded rod 402 drives the mounting box 504 at the upper ends of the two sliders to move relatively or away from each other to adapt to gear shafts of different lengths.

[0030] Please refer to Figures 3-4, in this embodiment, the lubrication mechanism 6 includes a pump body 601, a shunt pipe 606, a filter screen 604, and a scraper 607. The pump body 601 is fixedly installed on the installation box 504. A feed pipe 602 is connected to the water inlet end of the installation box 504, and one end of the feed end is connected to the bottom of the installation box 504. The water outlet end of the pump body 601 is connected to a discharge pipe 603. Shunt pipes 606 are fixedly installed on both inner walls of the installation box 504, and a plurality of nozzles 605 for spraying lubricating oil onto the surface of the rotating disk 507 are fixed on one side of the shunt pipe 606.

[0031] The device starts the pump body 601 to pump the liquid into the discharge pipe 603, then the discharge pipe 603 conveys the liquid to the shunt pipe 606, and then the nozzles 605 spray the lubricating liquid onto the rotating disk 507 for maintenance.

[0032] It should be noted that when maintaining the rotating disk 507, too much sprayed lubricating liquid may cause the surface of the rotating disk 507 to be too smooth. Through the setting of the scraper 607, the excess lubricating liquid sprayed on the surface of the rotating disk 507 is scraped off, so that a thin layer of lubricating liquid adheres to the surface of the rotating disk 507, avoiding too much lubricating liquid adhering to the rotating disk 507, and thus affecting the stability of the top pressure roller 508 when limiting the gear shaft.

[0033] Among them, scrapers 607 for scraping off the excess lubricating liquid on the surface of the rotating disk 507 are fixedly installed on both inner walls of the installation box 504. A filter screen 604 is horizontally arranged in the installation box 504 to facilitate filtering impurities. The filter screen 604 is located below the rotating disk 507.

[0034] The working principle of the above embodiment is as follows:

[0035] Place the gear shaft between the upper ends of the two rotating disks 507. By starting the air pump 501, the air pump 501 outputs gas into the air collection box 502, then the air collection box 502 conveys the gas to the air supply pipe 503, and the air supply pipe 503 conveys the gas to the piston cylinder 506. The gas pushes the piston rod 510 on the piston plate 509 to move. The piston rod 510 drives the fixed frame 511 to move, and the fixed frame 511 drives the top pressure roller 508 to move downward, so that the top pressure roller 508 can cooperate with the upper side of the gear shaft. Among them, the top pressure roller 508 can rotate and cooperate with the upper side end of the gear shaft. By supplying air through the air pump 501, it is always ensured that the piston rod 510 drives the top pressure roller 508 on the fixed frame 511 to move downward. Under the pressing of the top pressure roller 508, the stability of the hollow shaft rotating between the two rotating disks 507 can be greatly improved.

[0036] Then, start the pump body 601 to pump the liquid into the discharge pipe 603, and then the discharge pipe 603 conveys the liquid into the shunt pipe 606. Next, the lubricating liquid is sprayed onto the rotating disk 507 by the nozzle 605 for maintenance. The thickness of the lubricating liquid sprayed on the rotating disk 507 is ensured to be uniform by the setting of the scraper 607. The excess lubricating liquid drops onto the filter screen 604, and then the filter screen 604 filters it for recycling.

[0037] It should be noted that in this text, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not explicitly listed, or also includes elements inherent in such process, method, article or device. Without more limitations, an element defined by the statement "including a..." does not exclude the existence of additional identical elements in the process, method, article or device including the said element.

[0038] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A device for detecting the coaxiality of an automobile gear shaft, comprising a base (1), characterized in that: An electric push rod (2) is vertically arranged on the base (1), a test table (3) is fixed on the electric push rod (2), a moving mechanism (4) is arranged on the base (1), a positioning mechanism (5) is arranged on the moving mechanism (4), and a lubricating mechanism (6) is arranged on the positioning mechanism (5); The positioning mechanism (5) comprises an installation box (504), an air collecting box (502) and an air pump (501). Two installation boxes (504) are arranged on the base (1). Two rotating disks (507) are rotatably arranged on the inner side of the upper end of the installation box (504). A support frame (505) is fixed on the outer side of the installation box (504). A piston cylinder (506) is fixed on the upper end of the support frame (505). A piston plate (509) is tightly slidably installed in the piston cylinder (506). A piston rod (510) is fixed on one side of the piston plate (509). A fixing frame (511) is fixed on one end of the piston rod (510). A top pressure roller (508) is rotatably installed in the fixing frame (511). An air pump (501) and an air collecting box (502) are fixed to the side wall of the base (1) in sequence; an air outlet of the air pump (501) is connected to the air collecting box (502); and an air supply pipe (503) is connected between one side of the air collecting box (502) and the piston cylinder (506).

2. The device for detecting the coaxiality of an automobile gear shaft according to claim 1, characterized in that: A gas discharge pipe for discharging gas in the gas collecting box (502) is fixed on the gas collecting box (502), and a solenoid valve is fixed on the gas discharge pipe.

3. The device for detecting the coaxiality of an automobile gear shaft according to claim 1, characterized in that: The pressing roller (508) is located in the middle of the inner side of the support frame (505), and one of the rotating disks (507) is driven to rotate by an external first motor.

4. The device for detecting the coaxiality of an automobile gear shaft according to claim 1, characterized in that: The lubricating mechanism (6) comprises a pump body (601), a diverter pipe (606), a filter screen (604) and a scraper (607); the pump body (601) is fixedly mounted on the mounting box (504); the water inlet end of the mounting box (504) is connected to a feed pipe (602); the water outlet end of the pump body (601) is connected to a discharge pipe (603); the diverter pipe (606) is fixed to both inner walls of the mounting box (504); and a plurality of nozzles (605) for spraying lubricating oil onto the surface of the rotating disk (507) are fixed to one side of the diverter pipe (606).

5. The automobile gear shaft coaxiality detection device according to claim 4, characterized in that: Scrapers (607) for scraping off excess lubricating liquid on the surface of the rotating disk (507) are fixed to both inner walls of the installation box (504), and a filter screen (604) is transversely arranged inside the installation box (504).

6. The automobile gear shaft coaxiality detection device according to claim 1, characterized in that: The moving mechanism (4) comprises a fixed plate (401), a threaded rod (402), a limiting rod (403) and a mounting plate (404); a rotatable threaded rod (402) is disposed transversely in the base (1); one end of the threaded rod (402) is driven to rotate by an external second motor; the threaded rod (402) is threadedly engaged with two sliders that can move relative to or apart from each other; one end of the slider is fixed to the bottom end of the mounting box (504); fixed mounting plates (404) are fixed on both sides of the mounting box (504); fixed plates (401) are fixed on both sides of the base (1); a limiting rod (403) is fixed between the two fixed plates (401); and a through hole slidably connected to the limiting rod (403) is provided on the mounting plate (404).

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