CN115290362A - Comprehensive test bench for locomotive suspension element - Google Patents

Abstract

The invention relates to the technical field of vehicle engineering, and particularly discloses a comprehensive test bed for a suspension element of a locomotive, which comprises a test bed seat, a rotary platform, a high-low temperature test box and a tool, wherein a driving motor is arranged on the test bed seat, the rotary platform is arranged on an output shaft of the driving motor, a hydraulic actuator is arranged on the outer side of the rotary platform, the high-low temperature test box is arranged in the rotary platform, the output end of the hydraulic actuator penetrates through the rotary platform and the high-low temperature test box and extends into the high-low temperature test box, a jacking mechanism is further arranged in the rotary platform, the output end of the jacking mechanism is positioned in the high-low temperature test box, and the tools are arranged at the output end of the hydraulic actuator and the output end of the jacking mechanism. The invention has the advantages that a single test bed is used for completing various test requirements of the shock absorber, the utilization rate of the test bed is improved, and particularly, the invention has good effect on the performance test of the extreme temperature.

Description

Comprehensive test bench for locomotive suspension element

Technical Field

The invention relates to the technical field of vehicle engineering, in particular to a comprehensive test bench for a locomotive vehicle suspension element.

Background

The high-speed railway industry in China is developing vigorously, the speed of the rail vehicle is also improved continuously, higher requirements are provided for the reliability, the stability and the comfort of the vehicle while people go out conveniently, and particularly higher requirements are provided for the performance of suspension elements in recent years for developing motor train units of special climatic types such as plateau high altitude and the like. The suspension element is used as an important part of the vehicle and is directly or indirectly related to various performance indexes of the vehicle. Wherein the oil damper is used widely on rolling stock as the main component of alleviating the vibration, includes: primary vertical shock absorbers, secondary transverse shock absorbers, anti-hunting shock absorbers, and the like. The dynamic performance, the static performance, the extreme temperature performance, the durability performance and the like of the shock absorber are performance indexes mainly considered in the application process of the railway vehicle.

The existing test bed mainly adopts a single transverse or vertical test bed, can only meet the test requirements of a certain specific transverse or vertical shock absorber, and is limited in the actual use process; a few test beds can meet the test requirements of the shock absorber with any installation angle, but a better effective solution for measuring the limit temperature is not provided. The method can carry out the limit temperature test on the shock absorber, but the shock absorber is also required to adjust a tool when being installed on the test bed, the installation surface, the installation angle, the installation length and the like of the shock absorber, the installation process needs to be finished within 5 minutes according to the experiment requirement of the limit temperature, and the complicated work directly causes the overlong installation time, and the problem is particularly prominent when the low temperature test is carried out in summer; meanwhile, most actuators are connected with sensors, so that the high-frequency performance of the shock absorber cannot be tested, and the testing capability is limited.

Disclosure of Invention

The invention aims to overcome the defects of the prior art and provide a comprehensive test bench for suspension elements of rolling stock, which meets various test requirements of a shock absorber by using a single test bench, improves the utilization rate of the test bench and particularly has good effect on extreme temperature performance test.

The purpose of the invention is realized by the following technical scheme: the utility model provides a locomotive hangs component combined test bench, includes test pedestal, rotary platform, high low temperature test box and frock, the test pedestal on be provided with driving motor, rotary platform sets up on driving motor's output shaft, rotary platform's the outside be provided with hydraulic actuator, high low temperature test box sets up in the rotary platform, hydraulic actuator's output pass rotary platform and high low temperature test box and extend into high low temperature test box in, rotary platform in still be provided with the tight mechanism in top, the output of the tight mechanism in top is located in the high low temperature test box, hydraulic actuator's output and the output of the tight mechanism in top all be provided with the frock.

Specifically, the jacking mechanism comprises a first slide rail, a moving block, a first lead screw, a first motor and a guide rod, the first slide rail is fixed in the rotating platform, the moving block is slidably connected with the first slide rail, two first lead screw nuts are arranged on the moving block, the two first lead screws are respectively in threaded connection with the two first lead screw nuts, the first motor is fixed on the rotating platform, the output end of the first motor is connected with the two first lead screws through a belt pulley transmission system, the guide rod is arranged on the moving block, one end of the guide rod penetrates through the high and low temperature test box and extends into the high and low temperature test box, and the tool is arranged at one end of the guide rod.

Specifically, a sensor is arranged at one end of the guide rod, and the tool is fixed on the sensor.

Specifically, a first locking oil cylinder is arranged on the moving block, and the first locking oil cylinder is matched with the first slide rail to limit the moving block on the first slide rail.

Specifically, a jacking mechanism is arranged in the high-low temperature test chamber, the jacking mechanism comprises a second motor, a base and an upper seat, the base and the upper seat are connected through a scissor mechanism, the scissor mechanism comprises two connecting rods, the middle parts of the two connecting rods are hinged together, the second motor is arranged on the base in a sliding manner, a second rack is arranged on the base, the output end of the second motor is connected with a gear, the gear is meshed with the second rack, sliding chutes are arranged on the base and the upper seat, one end of one connecting rod is hinged with the base, and the other end of the connecting rod is connected with the sliding chute of the upper seat in a sliding manner; and one end of the other connecting rod is hinged with the upper seat, and the other end of the other connecting rod is connected with the sliding groove of the base in a sliding manner and is rotatably connected with the output end of the second motor.

Specifically, the jacking mechanism still include second slide rail and third motor, base and second slide rail sliding connection, it is provided with the second lead screw to rotate on the second slide rail, be provided with second screw-nut on the base, second screw-nut with second lead screw threaded connection, the output of third motor with second lead screw connection.

Specifically, rotary platform on be provided with third locking hydro-cylinder, be provided with the arc guide way on the test bench, third locking hydro-cylinder with the cooperation of arc guide way is with rotary platform and test bench locking.

Specifically, the output ends of the sensor and the hydraulic actuator are connected with the tool through a second locking oil cylinder.

Specifically, the tool comprises a main body, an upper cover, node fixing blocks, an adjusting mechanism and a fixing mechanism, wherein the two node fixing blocks are arranged on the main body in a sliding mode, the adjusting mechanism comprises a driving gear, a gear set and a first rack, the two node fixing blocks are respectively provided with a first rack, the gear set comprises a driven pinion and a driven gearwheel, the driven gearwheel and the driven pinion are coaxially arranged, each first rack is correspondingly provided with one gear set, the driven gearwheel is meshed with the first rack, the driving gear is meshed with the driven pinion of one gear set, the driven pinion of the other gear set is in transmission connection with the driving gear through an intermediate gear, and an adjusting knob is coaxially arranged on the driving gear; the fixing mechanism comprises a sliding block, a cam, fixed tooth blocks and a spring, wherein a sliding groove is formed in the main body, the sliding block is arranged in the sliding groove in a sliding mode, an installation groove is formed in the main body, the two sides of the sliding block are symmetrically hinged with the fixed tooth blocks, the installation groove is communicated with the sliding groove, the two fixed tooth blocks are arranged in the installation groove, one end of each fixed tooth block is provided with a clamping tooth, and the clamping teeth of the two fixed tooth blocks are matched with the driven large gears of the two gear sets respectively; the cam is arranged on the main body on one side of the moving block, the cam is abutted to the sliding block, a spring is arranged in the sliding groove, one end of the spring is abutted to the sliding block, the other end of the spring is abutted to the sliding groove, the upper cover is arranged on the main body in a covering mode and limits the adjusting mechanism and the fixing mechanism between the upper cover and the main body, the adjusting knob penetrates through the upper cover, the upper cover is rotatably provided with a fixing knob, and the fixing knob is connected with the cam.

Specifically, be provided with the spline in the main part, second locking hydro-cylinder on be provided with the spline groove, the spline inslot side is provided with the ring channel, the spline arrange in the ring channel and with the spline groove cooperation, be provided with the through-hole in the main part, the telescopic link of second locking hydro-cylinder is connected with a locking screw rod, locking screw rod one end with through-hole sliding connection and end are located between two node fixed blocks.

The invention has the following advantages:

1. according to the test bed provided by the invention, the rotary platform has the capability of hovering at any angle within the range of 0-90 degrees through the driving motor with the braking capability and the third locking oil cylinder, the requirements of different vibration absorbers on the installation angle can be met, and the application range of the test bed is greatly improved.

2. The test bed provided by the invention can adjust the installation length of the shock absorber through the left and right movement of the moving block in the horizontal plane, so that the test bed has the capability of testing the length of the shock absorber in a wide range.

3. The test bed provided by the invention can be used for avoiding the time consumed in the installation and adjustment processes in the limit temperature test process, reducing the test error of the shock absorber caused by temperature change and ensuring that the temperature meets the test requirements when the shock absorber test is started.

4. The test bed provided by the invention is provided with the group of jacking mechanisms, the shock absorber is placed on the upper seat, the mounting height of the shock absorber can be automatically adjusted, and the complicated step of manually lifting the shock absorber in the shock absorber mounting process is avoided, so that the labor is saved, and the time consumed by mounting is reduced. Meanwhile, the device can ensure the axis of the shock absorber to be horizontal, and the step of manually adjusting the level of the shock absorber by adopting a level meter is avoided.

5. According to the test bed provided by the invention, the traditional mode that the actuator and the sensor are connected with each other to acquire data is changed, the actuator and the sensor are separated, and the sensor is arranged on the sensor mounting seat, so that the influence of the inertia of the telescopic rod of the actuator on high-frequency test can be effectively avoided, and the influence of the test bed on the high-frequency performance of the shock absorber can be further completed.

6. Through a set of mutually meshed gear and rack mechanisms, the simultaneous movement of two node fixing blocks can be controlled by only rotating one adjusting knob, the reliable centering of the node of the shock absorber rubber node and the action axis of the actuator when the shock absorber rubber node is fixed is ensured, and the radial loading is ensured.

7. Two groups of mechanical structures which are located on parallel straight lines are arranged, and the locking of the device on the tool in the process of the shock absorber test can be realized by only rotating the fixed knob, and the bearing structure of the tool is optimized, so that the tool is reliably locked.

8. The tool provided by the invention can adjust the required length according to the node diameter of the shock absorber and the pitch of the node bolt holes of the shock absorber, thereby avoiding the complex step of frequently replacing the tool and effectively improving the test efficiency.

9. The tool provided by the invention can realize the replacement work of the tool with the node and the tool with the node removed only by simple operation, and the tool is of a metal structure, so that the tool is high in quality, the tool is frequently replaced, the risk of falling from the test bed is high, the injury probability of personnel is improved, and the safety can be improved by using the tool.

Drawings

FIG. 1 is a schematic view of the overall structure of the test bed of the present invention;

FIG. 2 is a schematic diagram of the internal structure of the high-low temperature test chamber of the present invention;

FIG. 3 is a schematic view of the interior of the test stand of the present invention in elevation;

FIG. 4 is a schematic structural diagram of a tightening mechanism according to the present invention;

FIG. 5 is a schematic diagram of a moving block structure according to the present invention;

FIG. 6 is a schematic diagram of a jacking mechanism according to the present invention;

FIG. 7 is a schematic view of the tooling structure of the present invention;

FIG. 8 is a schematic view of the fixing mechanism and the adjusting mechanism of the present invention;

FIG. 9 is a schematic structural view of the fixing mechanism of the present invention in an adjusted state;

FIG. 10 is a schematic structural view of the fixing mechanism of the present invention in a fixed state;

FIG. 11 is a schematic view of the main structure of the present invention;

FIG. 12 is a schematic view of the structure of the bumps and grooves;

FIG. 13 is a schematic view of a node-removing fixing block according to the present invention;

FIG. 14 is a structural schematic of the fixed block with nodes of the present invention;

FIG. 15 is a schematic structural view of the connection between the tool with the fixed block for removing nodes and the shock absorber of the present invention;

FIG. 16 is a schematic structural view of the connection between the tool with the node fixing block and the shock absorber of the present invention;

FIG. 17 is a schematic structural view of a second locking cylinder according to the present invention;

FIG. 18 is a schematic view of the locking screw of the present invention being a pull rod;

FIG. 19 is a schematic view of the locking screw of the present invention being a push rod;

FIG. 20 is a schematic structural view of the shock absorber of the present invention;

in the figure: 1-a test bench seat, 2-a rotary platform, 3-a high-low temperature test box, 4-a hydraulic actuator, 5-a second locking oil cylinder, 51-a spline groove, 52-an annular groove, 53-a locking screw, 6-a tool, 7-a shock absorber, 8-a jacking mechanism, 11-an arc guide groove, 61-a main body, 611-a through hole, 612-a groove, 613-an installation groove, 614-a sliding groove, 62-an upper cover, 621-a bump sliding groove, 622-a concave hole, 63-a node fixing block, 641-a driving gear, 642-a first rack, 643-an adjusting knob, 644-a driven pinion and 645-a driven bull gear, 646-intermediate gear, 651-sliding block, 652-cam, 653-fixed tooth block, 654-spring, 656-fixed knob, 66-spline, 7-vibration absorber, 22-first sliding rail, 24-guide rod, 25-first lead screw, 26-moving block, 261-first lead screw nut, 27-first locking oil cylinder, 28-first motor, 29-sensor, 811-third motor, 812-second sliding rail, 813-second lead screw, 814-second lead screw nut, 821-base, 822-connecting rod, 824-second rack, 825-gear, 826-second motor and 827-upper seat.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the detailed description and specific examples, while indicating the preferred embodiment of the invention, are intended for purposes of illustration only and are not intended to limit the scope of the invention. The components of embodiments of the present invention 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 present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without making any creative effort, shall fall within the protection scope of the present invention.

It is noted that relational terms such as "first" and "second," and the like, may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising a … …" does not exclude the presence of additional like elements in a process, method, article, or apparatus that comprises the element.

The invention will be further described with reference to the accompanying drawings, but the scope of protection of the invention is not limited to the following.

As shown in fig. 1-20, a locomotive vehicle hangs component combined test bench, including test bench 1, rotary platform 2, high low temperature test case 3 and frock 6, test bench 1 on be provided with driving motor, rotary platform 2 sets up on driving motor's output shaft, rotary platform 2's the outside be provided with hydraulic actuator 4, high low temperature test case 3 sets up in rotary platform 2, hydraulic actuator 4's output pass rotary platform 2 and high low temperature test case 3 and extend into high low temperature test case 3 in, rotary platform 2 in still be provided with the tight mechanism in top, the output of the tight mechanism in top is located in high low temperature test case 3, the output of hydraulic actuator 4 and the output of the tight mechanism in top all be provided with frock 6. In this embodiment, test pedestal 1 is installed on rigid ground through the bolt, driving motor fixes on test pedestal 1, driving motor adopts step motor, can drive rotary platform 2 internal rotation in vertical plane through driving motor, in order to satisfy different test demands, rotary platform 2 is the frame construction, it has an inner chamber, inlay high low temperature test case 3 in rotary platform 2's inner chamber, provide extreme test environment for shock absorber 7 through high low temperature test case 3, hydraulic actuator 4 passes through the bolt fastening on rotary platform 2, hydraulic actuator 4's telescopic link runs through rotary platform 2 and high low temperature test case 3, and install a frock 6 at the end of hydraulic actuator 4's telescopic link, set up the tight mechanism in top at rotary platform 2's opposite side, the output of the tight mechanism in top passes through high low temperature test case 3 and extends into high low temperature test case 3, and install frock 6 at the output of the tight mechanism in top, install shock absorber 7 through two frock 6, the both ends of shock absorber 7 cooperate with a frock 6 respectively, make 7 horizontal centering through hydraulic 4 and the tight mechanism in top, adopt the shock absorber, can make the high temperature test case open before carrying out the limit temperature test case 2 the high temperature test to drive the high temperature test case and the high temperature test platform can start the rotation test at the high temperature test, it can not to drive the high temperature test platform to drive the high low temperature to drive the high temperature test case, it to start the high temperature test to pass through the limit angle simultaneously, it.

Further, the tightening mechanism comprises a first slide rail 22, a moving block 26, a first lead screw 25, a first motor 28 and a guide rod 24, the first slide rail 22 is fixed in the rotating platform 2, the moving block 26 is slidably connected with the first slide rail 22, two first lead screw nuts 261 are arranged on the moving block 26, the two first lead screws 25 are respectively in threaded connection with the two first lead screw nuts 261, the first motor 28 is fixed on the rotating platform 2, the output end of the first motor 28 is connected with the two first lead screws 25 through a belt wheel transmission system, the guide rod 24 is arranged on the moving block 26, one end of the guide rod 24 penetrates through the high and low temperature test box 3 and extends into the high and low temperature test box 3, and the tool 6 is arranged at one end of the guide rod 24. In this embodiment, the top and the bottom of the inner cavity of the rotating platform 2 are both provided with a first slide rail 22, the first slide rail 22 is fixed on the rotating platform 2 through bolts, the upper and the lower ends of the moving block 26 are both provided with slide rail grooves adapted to the corresponding first slide rail 22, the moving block 26 is slidably connected with the first slide rail 22 through the slide rail grooves, two first lead screws 25 are horizontally arranged in the rotating platform 2, and two first lead screw nuts 261 are correspondingly arranged on the moving block 26, so that the first lead screws 25 are correspondingly in threaded connection with one first lead screw nut 261, one end of the first lead screws 25 is rotatably connected with the rotating platform 2 through bearings, a belt wheel transmission system is arranged outside the rotating platform 2, the belt wheel system comprises a belt wheel fixed at one end of the first lead screw 25 and a belt sleeved on the belt wheel, the belt can be a synchronous belt, the output end of the first motor 28 can also be provided with a belt wheel, thus, the first motor 28 rotates to drive the two first lead screws 25 to rotate through the belt pulley, and then drives the first lead screw nut 261 to move along the first lead screws 25, so as to drive the moving block 26 to slide along the first slide rail 22, the moving block 26 is provided with two guide rods 24, the two guide rods 24 both penetrate through the high-low temperature test box 3 and extend into the high-low temperature test box 3, one ends of the two guide rods 24 are connected with a sensor mounting seat, a sensor 29 is mounted on the sensor mounting seat, the tool 6 is fixed on the sensor 29, the sensor 29 is a force sensor, a Load Cell 100kN force sensor produced by Interface company is adopted, as the sensor 291 is arranged in the high-low temperature test box 3, according to the limit temperature test requirement of the shock absorber 7, the limit temperature test range is-50 ℃ to 70 ℃, the effective working temperature range of the sensor 291 is-55 ℃ to 90 ℃, during the experiment, a signal is received through the sensor 291, a limiting plate can be arranged between the first slide rail 22 and the high-low temperature test box 3, a guide hole is formed in the limiting plate, and the guide rod 24 is in sliding connection with the guide hole to play a role in guiding; the actuator 4 is provided with a displacement sensor, and the displacement of the actuator 4 is detected by the displacement sensor during the test, and the test is performed in cooperation with the force sensor.

Further, a first locking oil cylinder 27 is arranged on the moving block 26, and the first locking oil cylinder 27 is matched with the first slide rail 22 to limit the moving block 26 on the first slide rail 22. In this embodiment, a convex sliding groove is formed in the first slide rail 22 along the sliding direction, a convex locking block is arranged on a telescopic rod of the first locking cylinder 27, the locking block is arranged in the convex sliding groove in a sliding manner, the upper end and the lower end of the moving block 26 are respectively provided with the first locking cylinders 27, two first locking cylinders 27 are preferably arranged on each side, when the moving block 26 moves to a specified position, the telescopic rods of the upper and the lower second locking cylinders 27 arranged on the inner side of the moving block 26 act, and the moving block 26 is held on the first slide rail 22 by the action of the telescopic rods.

Further, a jacking mechanism is arranged in the high and low temperature test chamber 3, the jacking mechanism includes a second motor 826, a base 821 and an upper seat 827, the base 821 and the upper seat 827 are connected through a scissor mechanism, the scissor mechanism includes two connecting rods 822, middle portions of the two connecting rods 822 are hinged together, the second motor 826 is slidably arranged on the base 821, a second rack 824 is arranged on the base 821, an output end of the second motor 826 is connected with a gear 825, the gear 825 is engaged with the second rack 824, sliding grooves are arranged on both the base 821 and the upper seat 827, one end of one connecting rod 822 is hinged to the base 821, and the other end of the connecting rod 822 is slidably connected with the sliding groove of the upper seat 827; one end of the other connecting rod 822 is hinged to the upper seat 827, and the other end is slidably connected to the sliding groove of the base 821 and rotatably connected to the output end of the second motor 826. After the shock absorber 7 is installed on two tools 6, for part of the shock absorber 7 such as an anti-snaking shock absorber, the tools 6 need to be adjusted to make the plane of the tools 6 flush with the horizontal plane, in this embodiment, the shock absorber 7 is supported by a jacking mechanism, second racks 824 are arranged in parallel on two sides of the top of the base 821, a gear 825 is arranged at the output end of the second motor 826, the second motor 826 adopts a two-axis stepping motor, the base 821 and the upper seat 827 are connected by arranging a scissor mechanism on two sides, so that the support is more stable, the two connecting rods 822 of the scissor mechanism form an X-shaped structure, a slider is arranged at one end of the connecting rod 822, the connecting rod 822 is slidably connected with a corresponding sliding groove through the slider, when in use, the second motor 826 is controlled to rotate, the second motor 826 drives the gear 825 to move along the second racks 824, at the time, the second motor 826 moves along with the sliding direction, in the process, one end of the connecting rod 822 connected with the connecting rod is driven to move along one end of the sliding groove, so that the included angle of the two connecting rods 822 is reduced, the upper seat 827 is placed on the shock absorber 827, the shock absorber 7 is installed on the upper seat 827, and the tool 7 is stably installed, and then the jacking mechanism is installed on the tool 6, and the jacking mechanism is lifted in place on the shock absorber 827, and the tool 7.

Further, the jacking mechanism further comprises a second sliding rail 812 and a third motor 811, the base 821 is connected with the second sliding rail 812 in a sliding manner, a second screw rod 813 is arranged on the second sliding rail 812 in a rotating manner, a second screw rod nut 814 is arranged on the base 827, the second screw rod nut 814 is connected with the second screw rod 813 in a threaded manner, and an output end of the third motor 811 is connected with the second screw rod 813. In this embodiment, a second slide rail 812 is disposed in the high and low temperature test chamber 3, the base 821 is slidably disposed on the second slide rail 812, the second lead screw nut 814 is rotatably disposed on the second slide rail 812, and two second lead screw nuts 814 are disposed at the bottom of the base 821, so that the second lead screw nut 814 is in threaded connection with the second lead screw 813, and is connected with the second lead screw 813 through the third motor 811, so that the third motor 811 can drive the second lead screw 813 to rotate, and further drive the base 821 to move along the second slide rail 812, so as to adjust the position of the shock absorber 7.

Further, rotary platform 2 on be provided with third locking hydro-cylinder 211, be provided with arc guide way 11 on the test bench 1, third locking hydro-cylinder 211 with 11 cooperations of arc guide way are with rotary platform 2 and test bench 1 locking. In this embodiment, the telescopic link of third locking hydro-cylinder 211 passes arc guide way 11 and connects a stopper, it slides along arc guide way 11 to drive the telescopic link of 2 pivoted in-process third locking hydro-cylinders 211 at driving motor, it compresses tightly at test pedestal 1's on the surface to rotate the telescopic link that targets in place back through third locking hydro-cylinder 211 at rotary platform 2, reliable locking, can be used for realizing horizontal shock absorber, vertical shock absorber has the experimental demand of special requirement shock absorber to installation angle, wherein driving motor adopts the step motor who possesses the brake function.

Further, the output ends of the sensor 29 and the hydraulic actuator 4 are connected with the tool 6 through the second locking oil cylinder 5. In the embodiment, the sensor 29 and the hydraulic actuator 4 are both connected with the tool 6 through the second locking cylinder 5, and the shock absorber 7 is tightly connected with the tool 6 through the second locking cylinder 5.

Further, the tool 6 includes a main body 61, an upper cover 62, node fixing blocks 63, an adjusting mechanism and a fixing mechanism, two of the node fixing blocks 63 are slidably disposed on the main body 61, the adjusting mechanism includes a driving gear 641, a gear set and a first rack 642, a first rack 642 is disposed on each of the two node fixing blocks 63, the gear set includes a driven pinion 644 and a driven gearwheel 645, the driven gearwheel 645 is disposed coaxially with the driven pinion 644, one gear set is disposed correspondingly to each of the first racks 642, the driven gearwheel 645 is engaged with the first rack 642, the driving gear 641 is engaged with the driven pinion 644 of one of the gear sets, the driven pinion 644 of the other gear set is in transmission connection with the driving gear 641 through an intermediate gear 646, and an adjusting knob 643 is disposed coaxially on the driving gear 641; the fixing mechanism comprises a sliding block 651, a cam 652, fixing teeth 653 and a spring 654, wherein the main body 61 is provided with a sliding groove 614, the sliding block 651 is slidably arranged in the sliding groove 614, the main body 61 is provided with a mounting groove 613, the two sides of the sliding block 651 are symmetrically hinged with fixing tooth blocks 653, the mounting groove 613 is communicated with the sliding groove 614, the two fixing tooth blocks 653 are arranged in the mounting groove 613, one end of each fixing tooth block 653 is provided with a latch, and the latches of the two fixing tooth blocks 653 are respectively matched with the driven large gears 645 of the two gear sets; the cam 652 is provided on the main body 61 on one side of the slide block 651, the cam 652 abuts against the slide block 651, a spring 654 is provided in the slide groove 614, one end of the spring 654 abuts against the slide block 651, the other end abuts against the slide groove 614, the upper cover 62 is provided on the main body 61 to limit the adjustment mechanism and the adjustment mechanism between the upper cover 62 and the main body 61, the adjustment knob 643 penetrates the upper cover 62, a fixing knob 656 is provided on the upper cover 62 in a rotatable manner, and the fixing knob 656 is connected to the cam 652. In this embodiment, a groove 612 is formed in the main body 61, a guide rail is disposed on a side wall of the main body 61, the two node fixing blocks 63 are slidably connected to the guide rail, and a distance between the two node fixing blocks 63 is adjusted by an adjusting mechanism, so that the shock absorber 7 can be limited, the first rack 642 is fixed on the node fixing blocks 63, the driven large gear 645 is coaxially connected with the driven small gear 644 and is disposed in the groove 612, the driving gear 641, the gear set and the intermediate gear 646 are rotatably disposed in the groove 612 through a rotating shaft, so that the adjusting knob 643 is coaxially disposed on the driving gear 641, and the driving gear 641 is driven to rotate by rotating the adjusting knob 643, and since the driven small gear 644 is engaged with the driving gear, the driving gear 641 rotates to drive the driven small gear 644 to rotate, and further drives the driven large gear 645 to rotate, and the driven large gear can drive the first rack 642 to move along the guide rail, the driving gear 641 also drives the middle gear 646 to rotate when rotating, so that the middle gear 646 drives another gear set to rotate, and drives another first rack 642 to move through a driven large gear 645 of the gear set, so that the two node fixing blocks 63 can be driven to move oppositely or move away by rotating the adjusting knob 643, and thus the shock absorber 7 can be installed, after the positions of the two node fixing blocks 63 are adjusted to be in place, the two node fixing blocks 63 need to be fixed, in this embodiment, the node fixing blocks 63 are fixed through the adjusting mechanism, the sliding direction of the sliding block 651 in the sliding groove 614 is the moving direction perpendicular to the first rack 642, the middle of the sliding block 651 is hollowed out, one end of each of the two fixing tooth blocks 653 is arranged in the hollowed-out area and hinged with the sliding block 651 through a pin shaft, and the two fixing tooth blocks 653 are respectively arranged at two sides of the sliding block 651, the fixed gear block is provided with a step and an inclined plane at the joint of the mounting groove 613 and the sliding groove 614, the space of one end of the mounting groove 613, which is far away from the sliding groove 614, is larger, so that the joint with the sliding groove 614 is closed, one end of the fixed gear block 653, which is far away from the sliding block 651, is provided with a latch at one end of the fixed gear block 653, which is far away from the sliding block 651, when the position of the node fixed block 63 needs to be fixed, the profile of the cam 652 consists of an involute and a section of circular arc, in the process of changing the fixed knob 41 from an adjusting state to a fixing state, as the radius of the cam 652 is gradually and continuously changed, the fixed knob 41 is rotated to drive the cam 652 to rotate, the sliding block 651 is slowly pushed to move through the cam 652, and finally, the circular arc on the tip of the cam 652 is contacted with the circular arc arranged on the moving block 42, so as to complete self-locking; the sliding block 651 can drive the fixed tooth block 653 to move in the moving process, due to the limitation of steps, when the sliding block 651 moves away from the node fixed block 63, the fixed tooth block 653 rotates by taking the steps as a fulcrum, and the latch arranged on the fixed tooth block 653 is meshed with the driven large gear 645, so that the latch of the fixed tooth block 653 can be stably meshed with the driven large gear 645 by the self-locking formed by the contact of the arc on the pointed end of the cam 652 and the arc arranged on the moving block 42, and the driven large gear 645 is locked, so that the position of the node fixed block 63 can be fixed, and the spring 654 can be compressed when the sliding block 651 moves; during adjustment, the fixed knob 41 is rotated to change from a fixed state adjustment to an adjustment state, at the moment, the sliding block 651 moves towards the node fixing block 63 under the action of restoring force of the spring 654 to drive the fixed tooth block 653 to move, one side of the fixed tooth block 653 rotates by taking the joint of the inclined plane and the horizontal plane as a fulcrum to enable the latch to be disengaged from the driven big gear 645, at the moment, the position state of the node fixing block 63 can be adjusted by the adjusting mechanism, in order to enable the latch to be perfectly engaged with the driven big gear 645, in the embodiment, convex points are circumferentially arrayed on the end surface of one of the driven big gear 645 and are hemispherical, the number of the convex points is the same as the number of teeth of the driven big gear 645, a convex point sliding groove 621 is arranged on the upper cover 62, the convex point sliding groove 621 is of an incomplete annular structure, a concave hole 622 is arranged on the end surface at the position of the notch, and the adjusting knob 643 is rotated, the salient point on the driven gearwheel 645 can be periodically positioned in the concave hole 622 on the upper cover 62, and can pass through the boss formed between the concave hole 622 and the salient point sliding groove 621 in the process of entering and leaving the concave hole 622, and the salient point is small enough because the upper cover 62 is directly and closely fit with the main body 61, so that in the process of rotating the adjusting knob, the structure can generate periodic vibration, the vibration can be captured by hands in the process of rotating the adjusting knob, and because the salient point corresponds to each tooth socket of the driven gearwheel 645, the rotating distance of one tooth can be known once by each vibration, after each vibration is sensed, one salient point is necessarily positioned in the concave hole 622, as long as the salient point is positioned in the concave hole 622, the clamping tooth of the fixed tooth block 653 can be reliably meshed with the driven gearwheel 34 in the fixing process.

Further, a spline 66 is arranged on the main body 61, a spline groove 51 is arranged on the second locking cylinder 5, an annular groove 52 is arranged on the inner side of the spline groove 51, the spline 66 is arranged in the annular groove 52 and matched with the spline groove 51, a through hole 611 is arranged on the main body 61, a telescopic rod of the second locking cylinder 5 is connected with a locking screw 53, one end of the locking screw 53 is in sliding connection with the through hole 611, and the end of the locking screw is located between the two node fixing blocks 63. In the embodiment, the main body 61 is provided with the connecting shaft, the spline 66 is arranged on the connecting shaft, the spline groove 51 of the second locking cylinder 5 is matched with the spline 66 in shape, the spline 66 is inserted into the spline groove 51 and further inserted into the annular groove 52 during connection, and then the spline groove 51 is connected with the spline 66 by rotating the angle of one key tooth, so that the second locking cylinder 5 is connected with the tool 6, the tool 6 needs to be adjusted after the tool 6 is installed in the step, the plane of the upper cover 62 of the tool 6 is flush with the horizontal plane, the telescopic rod of the second locking cylinder 5 is in threaded connection with the locking screw 53, the through hole 611 and the spline 66 are coaxially arranged, and one end of the locking screw 53 passes through the through hole 611.

The structure comprises a rubber node removing test bearing and a rubber node carrying test bearing, wherein the rubber node removing test bearing is carried, a node fixing block 63 can be divided into a node removing fixing block and a node carrying fixing block, the opposite surfaces of the two node removing fixing blocks on the node removing fixing block are cambered surfaces, the opposite surfaces of the two node carrying fixing blocks on the node carrying fixing block are straight surfaces, a locking screw 53 matched with the node removing fixing block is a push rod, the push rod is a round shaft, one end of the push rod is provided with threads, rubber nodes at the two ends of a shock absorber 7 are arranged between the cambered surfaces of the node removing fixing blocks, the node removing fixing block mainly bears the clamping force of the push rod arranged in a second locking oil cylinder 5, the force is transmitted to the node removing fixing block through the rubber nodes of the shock absorber 7, the node removing fixing block bears the force in the same direction as the clamping force, namely the same-direction force along the axial direction of the shock absorber 7, at the moment, the node removing fixing block bears the force along the axial direction of the shock absorber 7, transmits the force to a main body 61, and then transmits the force to the second locking oil cylinder 5 through splines 66 through the main body 61; since the contact surface of the fixed block with the damper 7 is a curved surface, the fixed block will also bear the force in the radial direction of the damper 7, and the force is transmitted to the adjusting mechanism via the first rack 642 and finally transmitted to the fixed toothed block 653 for partial bearing.

Take the rubber node test to bear, be provided with the screw hole on the terminal surface of area node fixed block, insert the bolt and with taking node fixed block interconnect in the both sides bolt hole of 7 rubber nodes of shock absorber, the locking screw 53 who uses this moment is the pull rod, the one end of pull rod sets up the screw thread, the other end sets up spacing boss, spacing boss with support on the through-hole terminal surface of main part 61, because 4 one ends of actuator install second locking hydro-cylinder 5, it is taut through the pull rod between second locking hydro-cylinder 5 and the frock 6, here pull rod fixed mode can be understood as with second locking hydro-cylinder 5 and frock 6, actuator 4 telescopic link is as an organic whole connection, exert force by actuator 4, frock 6 passes through the bolt with power transmission for shock absorber 7, take node fixed block to only bear the power along 7 axial direction of shock absorber, the frock is only transmitted power for main part 61 by taking node fixed block, inside mechanical structure does not bear.

The limit temperature test is based on the two tests, the shock absorber 7 is installed on the test bed firstly through the two tests, and due to the fact that the split type high-low temperature test box is adopted, the air compressor and the refrigerating and heating equipment are separated from the box body, the air compressor and the refrigerating and heating equipment are connected through the air pipe and the related pipelines and wire rods, the air pipe opening is formed in the same position on the high-low temperature test box 3 and the rotary platform 2, and the air compressor of the high-low temperature test box 3 is connected. The set temperature is adjusted, and the box door on the box body is closed, and the limit temperature test requires that the vibration damper 7 is placed in the high-low temperature test box 3 for at least 24 hours, and then the test can be carried out.

The left end and the right end of the shock absorber 7 are provided with rubber nodes, and two bolt holes are symmetrically arranged in the middle of each rubber node.

The Hydraulic actuator 4 adopts a Hydraulic drive 100kN Hydraulic drive device system produced by Inova company, a linear actuating cylinder contained in the device system is the Hydraulic actuator, a sealing ring is not needed in the actuator, an oil piston rod is adopted for centering, and the Hydraulic actuator is suitable for high-frequency and low-speed friction tests; the sensor 291 is a Load Cell 100kN force sensor produced by Interface company, and because the sensor 291 is arranged in the high-low temperature test box 3, the limit temperature test range is-50 ℃ to 70 ℃ according to the limit temperature test requirement of the shock absorber 7, and the effective working temperature range of the sensor 291 is-55 ℃ to 90 ℃; the first locking oil cylinder 27 adopts a ZSF25000 spring clamping oil cylinder produced by JAKOB; the high-low temperature test box 3 adopts a RK-TH-225 split type high-low temperature test box produced by RIUKAI, and the equipment is designed by splitting an internal unit (a refrigerating unit, a condenser and the like) on the premise of ensuring the test effect, so that the self weight of the rotary platform is effectively reduced.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way. Those skilled in the art can make numerous possible variations and modifications to the described embodiments, or modify equivalent embodiments, without departing from the scope of the invention. Therefore, any modification, equivalent change and modification made to the above embodiments according to the technology of the present invention are all within the protection scope of the present invention, unless the content of the technical scheme of the present invention is departed from.

Claims (10)

1. The utility model provides a rolling stock suspension element integrated test bench which characterized in that: including test pedestal (1), rotary platform (2), high low temperature test case (3) and frock (6), test pedestal (1) on be provided with driving motor, rotary platform (2) set up on the output shaft of driving motor (), the outside of rotary platform (2) be provided with hydraulic actuator (4), high low temperature test case (3) set up in rotary platform (2), the output of hydraulic actuator (4) pass rotary platform (2) and high low temperature test case (3) and extend into in high low temperature test case (3), rotary platform (2) in still be provided with and push up tight mechanism, the output that pushes up tight mechanism is located in high low temperature test case (3), the output of hydraulic actuator (4) and the output that pushes up tight mechanism all be provided with frock (6).

2. A locomotive vehicle suspension element comprehensive test rig according to claim 1, wherein: the jacking mechanism comprises a first slide rail (22), a moving block (26), first lead screws (25), a first motor (28) and a guide rod (24), the first slide rail (22) is fixed in the rotating platform (2), the moving block (26) is in sliding connection with the first slide rail (22), two first lead screw nuts (261) are arranged on the moving block (26), the two first lead screws (25) are respectively in threaded connection with the two first lead screw nuts (261), the first motor (28) is fixed on the rotating platform (2), the output end of the first motor (28) is connected with the two first lead screws (25) through a belt wheel transmission system, the guide rod (24) is arranged on the moving block (26), one end of the guide rod (24) penetrates through the high-low temperature test box (3) and extends into the high-low temperature test box (3), and the tool (6) is arranged at one end of the guide rod (24).

3. A locomotive vehicle suspension element comprehensive test rig according to claim 2, characterized in that: one end of the guide rod (24) is provided with a sensor (29), and the tool (6) is fixed on the sensor (29).

4. A locomotive vehicle suspension element comprehensive test rig according to claim 2, characterized in that: the moving block (26) is provided with a first locking oil cylinder (27), and the first locking oil cylinder (27) is matched with the first sliding rail (22) to lock the position of the moving block (26) on the first sliding rail (22).

5. A locomotive vehicle suspension element comprehensive test rig according to claim 1, wherein: the high-low temperature test box (3) is internally provided with a jacking mechanism (8), the jacking mechanism (8) comprises a second motor (826), a base (821) and an upper seat (827), the base (821) and the upper seat (827) are connected through a scissor mechanism, the scissor mechanism comprises two connecting rods (822), the middle parts of the two connecting rods (822) are hinged together, the second motor (826) is arranged on the base (821) in a sliding mode, a second rack (824) is arranged on the base (821), the output end of the second motor (826) is connected with a gear (825), the gear (825) is meshed with the second rack (824), sliding grooves are formed in the base (821) and the upper seat (827), one end of one connecting rod (822) is hinged to the base (821), and the other end of the other connecting rod is connected with the sliding groove of the upper seat (827) in a sliding mode; one end of the other connecting rod (822) is hinged with the upper seat (827), and the other end of the other connecting rod is connected with the sliding groove of the base (821) in a sliding mode and is connected with the output end of a second motor (826) in a rotating mode.

6. A locomotive vehicle suspension element comprehensive test bench according to claim 5, characterized in that: climbing mechanism (8) still include second slide rail (812) and third motor (811), base (821) and second slide rail (812) sliding connection, it is provided with second lead screw (813) to rotate on second slide rail (812), be provided with second screw-nut (814) on base (827), second screw-nut (814) with second lead screw (813) threaded connection, the output of third motor (811) with second lead screw (813) are connected.

7. A locomotive vehicle suspension element comprehensive test rig according to claim 1, wherein: rotary platform (2) on be provided with third locking hydro-cylinder (211), be provided with arc guide way (11) on test bench (1), third locking hydro-cylinder (211) with arc guide way (11) cooperation is locked rotary platform (2) and test bench (1).

8. A locomotive vehicle suspension element comprehensive test rig according to claim 3, wherein: the output ends of the sensor (29) and the hydraulic actuator (4) are connected with the tool (6) through the second locking oil cylinder (5).

9. A locomotive vehicle suspension element comprehensive test rig according to claim 8, wherein: the tool (6) comprises a main body (61), an upper cover (62), node fixing blocks (63), an adjusting mechanism and a fixing mechanism, wherein the two node fixing blocks (63) are arranged on the main body (61) in a sliding manner, the adjusting mechanism comprises a driving gear (641), a gear set and a first rack (642), a first rack (642) is arranged on each of the two node fixing blocks (63), the gear set comprises a driven pinion (644) and a driven gearwheel (645), the driven gearwheel (645) and the driven pinion (644) are coaxially arranged, each first rack (642) is correspondingly provided with a gear set, the driven gearwheel (645) is meshed with the first rack (642), the driving gear (641) is meshed with the driven pinion (644) of one of the gear sets, the driven pinion (644) of the other gear set is in transmission connection with the driving gear (641) through an intermediate gear (646), and an adjusting knob (643) is coaxially arranged on the driving gear (641); the fixing mechanism comprises a sliding block (651), a cam (652), fixed tooth blocks (653) and a spring (654), wherein a sliding groove (614) is formed in the main body (61), the sliding block (651) is arranged in the sliding groove (614) in a sliding mode, an installation groove (613) is formed in the main body (61), the fixed tooth blocks (653) are symmetrically hinged to two sides of the sliding block (651), the installation groove (613) is communicated with the sliding groove (614), the two fixed tooth blocks (653) are arranged in the installation groove (613), one end of each fixed tooth block (653) is provided with a clamping tooth, and the clamping teeth of the two fixed tooth blocks (653) are respectively matched with driven large gears (645) of the two gear sets; the cam (652) is arranged on a main body (61) on one side of a sliding block (651), the cam (652) is abutted against the sliding block (651), a spring (654) is arranged in the sliding groove (614), one end of the spring (654) is abutted against the sliding block (651), the other end of the spring (654) is abutted against the sliding groove (614), the upper cover (62) is arranged on the main body (61) in a covering mode to limit the adjusting mechanism and the adjusting mechanism between the upper cover (62) and the main body (61), the adjusting knob (643) penetrates through the upper cover (62), a fixing knob (656) is rotatably arranged on the upper cover (62), and the fixing knob (656) is connected with the cam (652).

10. A locomotive vehicle suspension element comprehensive test rig according to claim 9, wherein: be provided with spline (66) on main part (61), second locking hydro-cylinder (5) on be provided with spline groove (51), spline groove (51) inboard is provided with ring channel (52), spline (66) arrange in ring channel (52) and with spline groove (51) cooperation, be provided with through-hole (611) on main part (61), the telescopic link of second locking hydro-cylinder (5) is connected with a locking screw (53), locking screw (53) one end with through-hole (611) sliding connection and end are located between two node fixed blocks (63).

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