CN209878341U - Thrust wheel endurance test system - Google Patents
Thrust wheel endurance test system Download PDFInfo
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- CN209878341U CN209878341U CN201921001851.2U CN201921001851U CN209878341U CN 209878341 U CN209878341 U CN 209878341U CN 201921001851 U CN201921001851 U CN 201921001851U CN 209878341 U CN209878341 U CN 209878341U
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Abstract
The utility model provides a thrust wheel endurance test system relates to testing arrangement technical field, the utility model provides a thrust wheel endurance test system includes: the supporting mechanism is used for supporting the thrust wheel, and the driving mechanism is in transmission connection with the thrust wheel and is used for driving the thrust wheel to rotate around the axis of the thrust wheel; the force application mechanism applies load to the thrust wheel through the supporting mechanism, and the force application mechanism is movably connected with the supporting mechanism so as to change the force application direction or the force application position to the thrust wheel. The utility model provides a thrust wheel endurance test system has alleviated the technical problem that the running-in testing machine that exists among the prior art can't simulate the host computer and be in the condition of slope under the thrust wheel terminal surface receives the condition of unbalance loading.
Description
Technical Field
The utility model belongs to the technical field of the testing arrangement technique and specifically relates to a thrust wheel endurance test system is related to.
Background
The thrust wheel is an important part of the crawler-type engineering machinery, and the loss state of the thrust wheel in the rotation process is tested through a running-in tester in the prior art. At the present stage, the loading mode of the running-in testing machine is fixed, the walking condition of the main machine on the flat ground can only be simulated, and the condition that the end face of the lower supporting wheel of the main machine is subjected to unbalance loading under the slope working condition cannot be simulated.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a thrust wheel endurance test system to alleviate the technical problem that the running-in testing machine that exists among the prior art can't simulate the condition that the host computer is in the slope operating mode down the thrust wheel terminal surface receives the unbalance loading.
The utility model provides a thrust wheel endurance test system includes: the supporting mechanism is used for supporting a thrust wheel, and the driving mechanism is in transmission connection with the thrust wheel and is used for driving the thrust wheel to rotate around the axis of the thrust wheel;
the force application mechanism applies load to the thrust wheel through the supporting mechanism, and the force application mechanism is movably connected with the supporting mechanism so as to change the force application direction or the force application position to the thrust wheel.
Furthermore, the force application mechanism comprises a first force application component, and the first force application component is rotatably connected with the top surface of the supporting mechanism.
Furthermore, the first force application assembly comprises a first oil cylinder, a piston rod of the first oil cylinder is rotatably connected with the top surface of the supporting mechanism through a rotating shaft, and the axis of the rotating shaft is parallel to the axis of the thrust wheel.
Furthermore, the force application mechanism comprises a second force application assembly and a third force application assembly, the second force application assembly is connected with the top surface of the supporting mechanism in a sliding mode, and the third force application assembly is abutted to the side surface of the supporting mechanism or the side surface of the driving mechanism.
Furthermore, the second force application assembly comprises a second oil cylinder, a piston rod of the second oil cylinder is connected with the top surface of the supporting mechanism in a sliding mode, and the sliding direction of the second oil cylinder is parallel to the axis of the thrust wheel;
the third force application assembly comprises a third oil cylinder, and a piston rod of the third oil cylinder is abutted against the side face of the supporting mechanism or the side face of the driving mechanism.
Further, the supporting mechanism comprises a mounting frame, and the mounting frame is provided with a first mounting position and a second mounting position which are used for mounting the thrust wheel.
Furthermore, actuating mechanism includes driving piece, action wheel and follows the driving wheel, the driving piece with the action wheel transmission is connected, follow driving wheel with the mutual parallel arrangement of action wheel.
Furthermore, the peripheral face of action wheel is equipped with the recess, the recess is followed the circumference of action wheel extends.
Furthermore, the thrust wheel endurance test system comprises an environment simulation box, and the driving mechanism and the supporting mechanism are arranged in the environment simulation box.
Further, the supporting mechanism comprises a mounting frame, and the mounting frame is provided with a first mounting position and a second mounting position which are used for mounting the thrust wheel;
the force application mechanism comprises a fourth force application component, the fourth force application component is connected with the mounting frame in a sliding mode, and the sliding direction of the fourth force application component is perpendicular to the axis direction of the thrust wheel.
The utility model provides a thrust wheel endurance test system includes: the supporting mechanism is used for supporting the thrust wheel, and the driving mechanism is in transmission connection with the thrust wheel and is used for driving the thrust wheel to rotate around the axis of the thrust wheel; the force application mechanism applies load to the thrust wheel through the supporting mechanism, and the force application mechanism is movably connected with the supporting mechanism so as to change the force application direction or the force application position to the thrust wheel. Through the utility model provides a during thrust wheel endurance test system test thrust wheel, install the thrust wheel in supporting mechanism, in the testing process, actuating mechanism drive thrust wheel rotates around the axis of thrust wheel, through adjusting application of force direction or the application of force position of application of force mechanism to supporting mechanism to change the application of force direction or the application of force position to the thrust wheel, with the simulation excavator is in the different angle slope walking condition, realize the test under different angle slope operating modes to the thrust wheel.
Drawings
Fig. 1 is a first schematic view of a thrust wheel endurance testing system according to an embodiment of the present invention;
fig. 2 is a second schematic view of a thrust wheel endurance testing system according to an embodiment of the present invention;
fig. 3 is a third schematic view of a thrust wheel endurance testing system according to an embodiment of the present invention;
fig. 4 is a schematic mechanism diagram of a force application mechanism of a thrust wheel endurance testing system according to an embodiment of the present invention;
fig. 5 is a fourth schematic view of the thrust wheel endurance testing system according to the embodiment of the present invention.
Icon: 110-a driving wheel; 111-grooves; 120-a driven wheel; 130-a resilient component; 131-a screw; 132-a turntable; 133-a coil spring; 210-a mounting frame; 211-horizontal mounting plate; 212-vertical mounting plate; 311-a first cylinder; 321-a second oil cylinder; 322-a first sled; 323-a first roller; 331-a third oil cylinder; 341-second sled; 342-a second roller; 400-thrust wheel; 500-environmental simulation chamber.
Detailed Description
The technical solution of the present invention will be described clearly and completely with reference to the following embodiments, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
The embodiment of the utility model provides a thrust wheel endurance test system includes: the supporting mechanism is used for supporting the thrust wheel 400, and the driving mechanism is in transmission connection with the thrust wheel 400 and is used for driving the thrust wheel 400 to rotate around the axis of the thrust wheel 400;
the force application mechanism applies a load to the thrust wheel 400 through the support mechanism, and the force application mechanism is movably connected with the support mechanism so as to change the force application direction or the force application position to the thrust wheel 400.
Specifically, the driving mechanism is disposed below the supporting mechanism and spaced from the supporting mechanism, and during the test, the thrust wheel 400 is disposed between the supporting mechanism and the driving mechanism and rotatably connected to the supporting mechanism. The force application mechanism is connected above the supporting mechanism, and applies acting force to the thrust wheel 400 through the supporting mechanism, so that the stress condition of the thrust wheel 400 under working conditions of different angles of slopes can be simulated.
In some embodiments, the support mechanism includes a support frame or support frame, or the like. In this embodiment, the supporting mechanism includes a mounting bracket 210, and the mounting bracket 210 has a first mounting position and a second mounting position.
Specifically, the mounting bracket 210 includes a horizontal mounting plate 211 and two vertical mounting plates 212; two vertical mounting panels 212 are first vertical mounting panel and second vertical mounting panel respectively, and horizontal mounting panel 211 sets up along the horizontal direction, and application of force mechanism and horizontal mounting panel 211's up end swing joint, the equal fixed mounting of first vertical mounting panel and second vertical mounting panel are in horizontal mounting panel 211's lower terminal surface to be parallel to each other and the interval sets up. An installation space for placing the supporting wheel 400 is formed between the first vertical installation plate and the second vertical installation plate, the first end portion of the first vertical installation plate corresponding to the second vertical installation plate is provided with a first installation position, the second end portion of the first vertical installation plate corresponding to the second vertical installation plate is provided with a second installation position, the supporting wheel 400 can be rotatably connected with the first vertical installation plate and the second vertical installation plate at the first installation position, or rotatably connected with the first vertical installation plate and the second vertical installation plate at the second installation position. The supporting wheel 400 to be tested is supported through the mounting frame 210, the mounting position of the supporting wheel 400 to be tested is fixed, the first mounting position and the second mounting position are arranged on the mounting frame 210, the two supporting wheels 400 are mounted on the mounting frame 210 at the same time, the force applying mechanism applies force to the two supporting wheels 400 at the same time, and the testing efficiency is improved.
In some embodiments, the force applying mechanism includes a first force applying component that is rotatably coupled to the top surface of the support mechanism.
The first force application component is rotatably connected with the upper end surface of the horizontal mounting plate 211, and the rotating axis of the first force application component is vertical to the axis of the upper loading wheel 400 mounted on the supporting mechanism. In the horizontal direction, the position of the connection point of the first force application assembly and the horizontal mounting plate 211 is located between the first mounting position and the second mounting position to apply force to the two thrust wheels 400 simultaneously. In the test process, can make first application of force subassembly rotate for horizontal installation board 211 to change the application of force direction to thrust wheel 400, with the simulation excavator in the condition of different angle slope walks, realize the test under different angle slope operating modes to thrust wheel 400.
The first force application component includes an air cylinder or an oil cylinder, and in this embodiment, the first force application component includes a first oil cylinder 311, a piston rod of the first oil cylinder 311 is rotatably connected with the top surface of the supporting mechanism through a rotating shaft, and an axis of the rotating shaft is parallel to an axis of the thrust wheel 400.
The first cylinder 311 is located above the horizontal mounting plate 211 and is rotatably connected with the horizontal mounting plate 211 through a rotating shaft. As shown in fig. 1, the axis of the rotating shaft is located between the first vertical mounting plate and the second vertical mounting plate, and is perpendicular to the axis of the thrust wheel 400 installed at the first installation position and the second installation position. In the test process, the output force of the first oil cylinder 311 can be controlled according to the requirement, and the stress conditions under different loads and impacts can be simulated; meanwhile, the force application direction of the first oil cylinder 311 to the horizontal mounting plate 211 can be changed by rotating the first oil cylinder 311 around the axis of the rotating shaft, so that the main load direction to the thrust wheel 400 is changed, the slope walking condition of the excavator at different angles can be simulated, and the conditions of uneven stress on the matching surfaces of the two end covers of the thrust wheel 400 and uneven stress on the end surfaces and unbalanced load on the end surfaces can be generated by changing the main load angle.
In another embodiment, the force application mechanism comprises a second force application component and a third force application component, the second force application component is connected with the top surface of the supporting mechanism in a sliding mode, and the third force application component is abutted against the side surface of the supporting mechanism or the side surface of the driving mechanism.
Specifically, the second force application assembly is slidably connected to the upper end surface of the horizontal mounting plate 211, and the sliding direction of the second force application assembly is parallel to the axial direction of the thrust wheel 400 mounted on the first mounting position and the second mounting position. The third force application assembly abuts against the end face of the first vertical mounting plate, which faces away from the thrust wheel 400, or the end face of the second vertical mounting plate, which faces away from the thrust wheel 400; in another embodiment, the third force application component abuts against the end surface of the driving wheel 110 of the driving mechanism. In the test process, the second force application assembly applies a downward action to the thrust wheel 400 through the horizontal mounting plate 211, the third force application assembly applies a horizontal acting force to the thrust wheel 400 through the first vertical mounting plate, the second vertical mounting plate or the driving wheel 110, and the resultant force of the acting force applied by the second force application assembly and the acting force applied by the third force application assembly is a main load acting on the thrust wheel 400. The angle or the size of the main load is adjusted by adjusting the sliding of the second force application component along the axial direction of the thrust wheel 400 or adjusting the acting force of the second force application component or the acting force of the third force application component, so that the conditions of uneven stress on the matching surfaces of the two end covers of the thrust wheel 400 and the condition of pressure and unbalance loading on the end surfaces can be generated by changing the angle of the main load under the condition that the excavator walks on slopes with different angles.
In some embodiments, the second force application assembly and the third force application assembly each include an air cylinder or an oil cylinder, and in this embodiment, the second force application assembly includes a second oil cylinder 321, a piston rod of the second oil cylinder 321 is slidably connected to the top surface of the support mechanism, and a sliding direction of the second oil cylinder 321 is parallel to an axis of the thrust wheel 400;
the third force application component comprises a third oil cylinder 331, and a piston rod of the third oil cylinder 331 is abutted with the side surface of the supporting mechanism or the side surface of the driving mechanism.
As shown in fig. 2 and 3, the second oil cylinder 321 is arranged in a vertical direction, a piston rod of the second oil cylinder 321 is fixedly connected with an upper end surface of the first sliding plate 322, a first roller 323 is installed on a lower end surface of the first sliding plate 322, an axial direction of the first roller 323 is perpendicular to an axial direction of the supporting wheel 400, and the second oil cylinder 321 adjusts a position of an acting force through the roller 323 along the axial direction of the supporting wheel 400. As another sliding connection mode, the upper end surface of the horizontal mounting plate 211 is provided with a first slide rail, the extending direction of the first slide rail is parallel to the axis direction of the supporting wheel 400, the lower end surface of the first slide plate 322 is provided with a first slide groove in sliding fit with the first slide rail, and the first slide plate 322 drives the second oil cylinder 321 to slide along the axis direction of the first slide rail.
The third cylinder 331 is disposed along the horizontal direction, in some embodiments, a piston rod of the third cylinder 331 abuts against a side surface of the first vertical mounting plate or the second vertical mounting plate, and in other embodiments, a piston rod of the third cylinder 331 abuts against an end surface of the driving wheel 110.
In the test process, the angle or the size of the main load is adjusted by adjusting the second oil cylinder 321 to slide along the axial direction of the thrust wheel 400, or adjusting the acting force of the second oil cylinder 321 or the acting force of the third oil cylinder 331, so that the condition that the excavator walks on slopes with different angles is simulated, and the condition that the matching surfaces of the two end covers of the thrust wheel 400 are stressed unevenly and the end surfaces are stressed and biased in load can be generated by changing the angle of the main load.
As another embodiment, the drive mechanism includes a resilient assembly 130. As shown in fig. 4, the elastic assembly 130 includes a screw 131, a rotary disc 132 and a coil spring 133, the screw 131 is disposed along a vertical direction, an upper end of the screw 131 is fixedly connected with a stand fixed on the ground, and a lower end is fixedly connected with an upper end surface of the horizontal mounting plate 211; the spiral spring 133 is sleeved on the periphery of the screw 131, and the lower end of the spiral spring is abutted against the upper end face of the horizontal mounting plate 211; the turntable 132 is located on one side of the spiral spring 133 departing from the horizontal mounting plate 211, the lower end surface of the turntable 132 is abutted to the upper end surface of the spiral spring 133, and the turntable 132 is sleeved on the periphery of the screw 131 and is in threaded fit with the screw 131. During the test, the rotating disc 132 can be rotated around the axis of the screw 131 to move the rotating disc 132 to a direction close to the horizontal mounting plate 211, and the rotating disc 132 compresses the coil spring 133, so that the coil spring 133 can generate force to the thrust wheel 400 through the horizontal mounting plate 211.
Further, the driving mechanism includes a driving member, a driving wheel 110 and a driven wheel 120, the driving member is in transmission connection with the driving wheel 110, and the driven wheel 120 and the driving wheel 110 are arranged in parallel.
As shown in fig. 5, in the present embodiment, the driving mechanism includes a driving wheel 110 and two driven wheels 120, the driving wheel 110 and the driven wheels 120 are both located below the mounting frame 210, the driving wheel 110 is located between the first mounting location and the second mounting location, and the two driven wheels 120 are located at two sides of the driving wheel 110. After the thrust wheels 400 are mounted at the first mounting location and the second mounting location, the outer circumferential surface of one of the thrust wheels 400 contacts the outer circumferential surface of the driving wheel 110 and the outer circumferential surface of one of the driven wheels 120, and the outer circumferential surface of the other thrust wheel 400 contacts the outer circumferential surface of the driving wheel 110 and the outer circumferential surface of the other driven wheel 120.
The driving part comprises a rotary cylinder, a rotary hydraulic cylinder or a motor and the like, in this embodiment, the driving part comprises a motor, and an output shaft of the motor is in transmission connection with the driving wheel 110 and is used for driving the driving wheel 110 to rotate around the axis of the driving wheel 110.
In the test process, the motor drives the driving wheel 110 to rotate, the force application mechanism generates acting force on the supporting wheel 400 through the mounting frame 210, the supporting wheel 400 is pressed between the driving wheel 110 and the driven wheel 120 by load, the driving wheel 110 rotates to drive the supporting wheel 400 to rotate, the walking of the excavator is simulated, and the driven wheel 120 rotates along with the supporting wheel 400 to play a role in positioning the supporting wheel 400.
Further, the peripheral surface of the driving wheel 110 is provided with a groove 111, and the groove 111 extends along the circumferential direction of the driving wheel 110.
As shown in fig. 1 to 3, the groove 111 is disposed in the middle of the outer circumferential surface of the driver 110 along the axial direction of the driver 110, and the cross section of the groove 111 is rectangular and extends along the circumferential direction of the outer circumferential surface of the driver 110. The peripheral surface of the driving wheel 110 is provided with the groove 111, and the design structure of the section profile of the driving wheel 110 can simulate the supporting condition of the caterpillar track to the thrust wheel 400 more truly, so that the testing accuracy is improved.
Further, the thrust wheel endurance test system includes an environment simulation box 500, and the driving mechanism and the supporting mechanism are both disposed in the environment simulation box 500. In the test process, the thrust wheel 400 can rotate in a specified environment (fine sand or muddy water) in a spraying or immersion mode, and the operation of the thrust wheel 400 under different working conditions is simulated.
Further, the supporting mechanism includes a mounting bracket 210, and the mounting bracket 210 has a first mounting position and a second mounting position;
the force application mechanism comprises a fourth force application component, the fourth force application component is connected with the mounting frame 210 in a sliding mode, and the sliding direction of the fourth force application component is perpendicular to the axial direction of the thrust wheel 400.
Specifically, the fourth force application assembly includes a cylinder or a hydraulic cylinder, and in this embodiment, the fourth force application assembly includes a fourth hydraulic cylinder. The fourth oil cylinder is arranged along the vertical direction, a piston rod of the fourth oil cylinder is fixedly connected with the upper end surface of the second sliding plate 341, as shown in fig. 5, the lower end surface of the second sliding plate 341 is provided with a second roller 342, the axial direction of the second roller 342 is parallel to the axial direction of the thrust wheel 400, and the fourth oil cylinder rolls along the direction perpendicular to the axial direction of the thrust wheel 400 through the second roller 342 to adjust the position of the acting force. As another sliding connection mode, the upper end surface of the horizontal mounting plate 211 is provided with a second slide rail, the extending direction of the second slide rail is perpendicular to the axial direction of the supporting wheel 400, the lower end surface of the second sliding plate 341 is provided with a second slide groove in sliding fit with the second slide rail, and the second sliding plate 341 drives the fourth oil cylinder to slide along the axial direction of the second slide rail. The fourth cylinder moves in the direction perpendicular to the axis of the thrust wheels 400 to change the load distribution of the two thrust wheels 400, thereby achieving the purpose of uniformly distributing the load or providing different loads for the two thrust wheels 400.
The embodiment of the utility model provides a thrust wheel endurance test system includes: the supporting mechanism is used for supporting the thrust wheel 400, and the driving mechanism is in transmission connection with the thrust wheel 400 and is used for driving the thrust wheel 400 to rotate around the axis of the thrust wheel 400; the force application mechanism applies a load to the thrust wheel 400 through the support mechanism, and the force application mechanism is movably connected with the support mechanism so as to change the force application direction or the force application position to the thrust wheel 400. Through the embodiment of the utility model provides a during thrust wheel endurance test system test thrust wheel 400, install thrust wheel 400 in supporting mechanism, in the test process, actuating mechanism drive thrust wheel 400 rotates around the axis of thrust wheel 400, through adjusting application of force direction or the application of force position of application of force mechanism to supporting mechanism, thereby change application of force direction or application of force position to thrust wheel 400, with the simulation excavator is in the different angle slope walking condition, realize the test under different angle slope operating modes to thrust wheel 400.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.
Claims (10)
1. A thrust wheel endurance testing system, comprising: the supporting mechanism is used for supporting a thrust wheel, and the driving mechanism is in transmission connection with the thrust wheel and is used for driving the thrust wheel to rotate around the axis of the thrust wheel;
the force application mechanism applies load to the thrust wheel through the supporting mechanism, and the force application mechanism is movably connected with the supporting mechanism so as to change the force application direction or the force application position to the thrust wheel.
2. The track roller endurance testing system of claim 1, in which the force applying mechanism includes a first force applying assembly rotatably coupled to a top surface of the support mechanism.
3. The thrust wheel endurance testing system of claim 2, in which the first force application assembly comprises a first oil cylinder, a piston rod of the first oil cylinder is rotatably connected with the top surface of the support mechanism through a rotating shaft, and an axis of the rotating shaft is parallel to an axis of the thrust wheel.
4. The thrust wheel endurance testing system of claim 1, in which the force applying mechanism includes a second force applying assembly slidably connected to the top surface of the support mechanism and a third force applying assembly abutting against a side surface of the support mechanism or a side surface of the drive mechanism.
5. The thrust wheel endurance testing system of claim 4, in which the second force application assembly includes a second cylinder, a piston rod of the second cylinder is slidably connected to the top surface of the support mechanism, and a sliding direction of the second cylinder is parallel to an axis of the thrust wheel;
the third force application assembly comprises a third oil cylinder, and a piston rod of the third oil cylinder is abutted against the side face of the supporting mechanism or the side face of the driving mechanism.
6. The bogie wheel durability test system of any one of claims 1 to 5 wherein the support mechanism comprises a mounting bracket having a first mounting location and a second mounting location each for mounting the bogie wheel.
7. The thrust wheel endurance testing system of any one of claims 1-5, wherein the driving mechanism includes a driving member, a driving wheel, and a driven wheel, the driving member is in driving connection with the driving wheel, and the driven wheel and the driving wheel are arranged in parallel with each other.
8. The track roller endurance testing system of claim 7, in which the peripheral surface of the drive wheel is provided with a groove extending circumferentially of the drive wheel.
9. The track roller endurance testing system of any one of claims 1-5, including an environmental chamber, the drive mechanism and the support mechanism both disposed within the environmental chamber.
10. The track roller endurance testing system of claim 1, in which the support mechanism includes a mounting bracket having first and second mounting locations each for mounting the track roller;
the force application mechanism comprises a fourth force application component, the fourth force application component is connected with the mounting frame in a sliding mode, and the sliding direction of the fourth force application component is perpendicular to the axis direction of the thrust wheel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921001851.2U CN209878341U (en) | 2019-06-28 | 2019-06-28 | Thrust wheel endurance test system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921001851.2U CN209878341U (en) | 2019-06-28 | 2019-06-28 | Thrust wheel endurance test system |
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| CN209878341U true CN209878341U (en) | 2019-12-31 |
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| CN201921001851.2U Active CN209878341U (en) | 2019-06-28 | 2019-06-28 | Thrust wheel endurance test system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110146304A (en) * | 2019-06-28 | 2019-08-20 | 三一重机有限公司 | Thrust wheel endurance testing system |
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2019
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110146304A (en) * | 2019-06-28 | 2019-08-20 | 三一重机有限公司 | Thrust wheel endurance testing system |
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Effective date of registration: 20210923 Address after: 401135 No. 618 Liangjiang Avenue, Longxing Town, Yubei District, Chongqing Patentee after: Sany Heavy Machinery (Chongqing) Co.,Ltd. Address before: 215000 Huancheng East Road, Kunshan Development Zone, Suzhou City, Jiangsu Province Patentee before: SANY HEAVY MACHINERY Ltd. |