CN209858326U - Mechanical loading device of tractor protector strength test system - Google Patents
Mechanical loading device of tractor protector strength test system Download PDFInfo
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- CN209858326U CN209858326U CN201920029901.1U CN201920029901U CN209858326U CN 209858326 U CN209858326 U CN 209858326U CN 201920029901 U CN201920029901 U CN 201920029901U CN 209858326 U CN209858326 U CN 209858326U
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Abstract
The utility model discloses a tractor protector strength test system's mechanical loading device, including horizontal loading device and the loading device that collapses, be provided with horizontal hydraulic pressure loading hydro-cylinder on horizontal loading device, be provided with on the loading device that collapses and collapsing hydraulic pressure loading hydro-cylinder, be provided with at horizontal hydraulic pressure loading hydro-cylinder and the piston end of collapsing hydraulic pressure loading hydro-cylinder and draw pressure sensor, displacement sensor sets up on the body of horizontal hydraulic pressure loading hydro-cylinder, draws pressure sensor and displacement sensor all to be connected to electrical control system. The utility model discloses realize reliably, gather the required data of strength test safely, convenient operation in the experimentation.
Description
Technical Field
The invention relates to a strength test system for a tractor protection device, and belongs to the technical field of strength tests for tractor protection devices.
Background
Due to the particularity of the operating environment and conditions of the tractor, the tractor has the characteristics of complex operating environment, multiple projects, severe working conditions, high labor intensity and the like. With the increasing expansion of tractor use, the work of tractor operators is increasingly heavy and complicated. When the tractor runs, if the road conditions are not good, the tractor can possibly turn over. When the ground condition on which the tractor runs is more sloppy, the speed is higher, the turning radius is smaller, and the running time is longer, the possibility of the occurrence of the rollover accident is higher. When a rollover accident occurs to the tractor protection device, the tractor protection device can be subjected to a large impact load in the moment of contacting with the ground, and the tractor protection device can be seriously damaged under the action of the impact load to cause serious casualty accidents. At present, the researches on the protecting device of the tractor at home and abroad mainly focus on the aspects of dynamic characteristics, a protecting device strength test method and the like when the tractor turns over, the research depth and the research breadth of the protecting device of the tractor in China are quite limited to a certain extent, and meanwhile, the related research and the report quantity disclosed at present are also less. Especially, for the mechanical loading device of the protection device strength test, a device with low cost, high reliability, high safety, convenient test and small volume is needed.
Disclosure of Invention
The invention aims to solve the technical problem of providing a mechanical loading device of a strength test system of a tractor protective device, which can reliably and safely acquire data required by a strength test and is convenient to operate in the test process.
In order to solve the technical problem, the invention provides a mechanical loading device of a strength test system of a tractor protective device, which is characterized in that: the hydraulic loading device comprises a horizontal loading device and a crushing loading device, wherein a horizontal hydraulic loading oil cylinder is arranged on the horizontal loading device, a crushing hydraulic loading oil cylinder is arranged on the crushing loading device, the tail ends of pistons of the horizontal hydraulic loading oil cylinder and the crushing hydraulic loading oil cylinder are respectively provided with a pulling pressure sensor, a displacement sensor is arranged on a body of the horizontal hydraulic loading oil cylinder, and the pulling pressure sensor and the displacement sensor are both connected to an electrical control system.
The invention achieves the following beneficial effects: according to the mechanical loading device of the tractor protection device strength test system, the tractor protection device is subjected to longitudinal loading, lateral loading and crushing loading tests, the load on the protection device is simulated when the tractor turns backwards or sideways, so that the strength of the protection device is tested, the data required by the strength test can be reliably and safely acquired, and the operation is convenient in the test process.
Drawings
FIG. 1 is a schematic structural view of a mechanical loading device according to embodiment 1;
FIG. 2 is a schematic structural view of a horizontal loading device of the mechanical loading device in embodiment 2;
FIG. 3 is a schematic structural view of a crushing loading device of the mechanical loading device of embodiment 2;
FIG. 4 is a schematic structural view of a horizontal loading apparatus according to embodiment 3;
FIG. 5 is a detailed structural view of a horizontal loading apparatus of embodiment 3;
FIG. 6 is a schematic view of horizontal front and back loading;
FIG. 7 is a schematic view of horizontal side loading;
FIG. 8 is a rear view of the crush tester;
fig. 9 is a side view of the crush test apparatus.
In the figure: 1. the hydraulic loading system comprises a crushing hydraulic loading oil cylinder 2, a longitudinal hydraulic loading oil cylinder 3, a pulling pressure sensor 4, a crushing loading beam 5, a lateral hydraulic loading oil cylinder 6, a gantry frame 7, a pulling pressure sensor 21, a vertical loading beam I22, a horizontal hydraulic loading oil cylinder 23, a displacement sensor 24, a rotary bearing platform 25, a rotary loading platform 31, a vertical loading beam II 34, a base I35, a vertical direction adjusting device 36, a horizontal fine adjusting device 37 and a hydraulic station; d1, rear load D2. seat landmark point D3, front load D4. second longitudinal load fore and aft action point D5. longitudinal center point D6. deformation D9. load when the first longitudinal load fore and aft action point D7. side load action point D8. is rear loaded D10. Universal connection D11. support under front and rear axles D12. position of beam when rear crush test D13. position of beam when front crush test D14. position of second crush beam when front can not bear full crush force D15. ground plane D16. position capable of supporting tractor mass when rollover.
Detailed Description
The invention discloses a strength test system for a tractor protection device, which comprises a mechanical loading device, a hydraulic loading system and an electrical control system. The mechanical loading device comprises a longitudinal loading device, a lateral loading device and a crushing loading device. The longitudinal loading device and the lateral loading device are used for carrying out loading test on the tested tractor protection device in the horizontal direction, so the device is also called a horizontal loading device. The hydraulic loading system comprises a hydraulic pump, a filter, an oil tank, an overflow valve, a one-way valve, a flow valve, a plurality of electromagnetic directional valves and other hydraulic elements, the automatic control of the magnitude of all loading loads is realized by controlling the proportional overflow valve, and the adjustment of the loading speed in the test is realized by controlling the flow valve, so that the loading speed in the test is ensured to meet the loading standard. The electric control system controls the hydraulic pump station to generate pressure oil to apply load to the protection device of the tested tractor, the sensor is used for measuring the variation of the load and the displacement in the test process, then the high-speed acquisition card is used for carrying out A/D conversion on the measured value obtained by the sensor, finally the converted data is sent to the computer for processing and displaying, the set value is compared to analyze and arrange the required data, and then a corresponding loading pressure control instruction is sent out according to the data, so that the aim of closed-loop control on the strength test process of the whole tractor protection device is fulfilled.
The technical scheme of the invention mainly lies in a mechanical loading device, and is respectively explained by specific embodiments below.
Example 1
The mechanical loading device is integral and comprises a horizontal loading device and a crushing loading device, the crushing loading device comprises a gantry frame 6, the gantry frame 6 is arranged on a track, a crushing hydraulic loading oil cylinder 1 is vertically arranged on a main beam of the gantry frame 6, the crushing hydraulic loading oil cylinder is connected with a crushing loading beam 4 which is horizontally arranged, the inner sides of two stand columns of the gantry frame 6 are provided with tracks for up-and-down movement of the crushing loading beam 4, and the tracks are provided with a plurality of bolt holes for fixing the position of the crushing loading beam 4 through bolts; the horizontal loading device comprises a longitudinal loading device and a lateral loading device, the longitudinal loading device comprises a first lead screw arranged on the upper surface of the crushing loading beam and along the trend of the crushing loading beam 4, the first lead screw is connected with a first motor, a first support is installed in a matching way with the first lead screw, a longitudinal hydraulic loading oil cylinder 2 is installed on the first support, and the longitudinal hydraulic loading oil cylinder 2 is vertically arranged with the crushing loading beam 4 on the same horizontal plane; the lateral loading device comprises two lateral hydraulic loading oil cylinders 5 in the horizontal direction, and the two lateral hydraulic loading oil cylinders 5 are respectively arranged on the inner sides of two upright posts of the door frame 6. And the tail ends of the pistons of the crushing hydraulic loading oil cylinder 1, the longitudinal hydraulic loading oil cylinder 2 and the lateral hydraulic loading oil cylinder 5 are respectively provided with a pulling pressure sensor, the displacement sensors are arranged on the bodies of the longitudinal hydraulic loading oil cylinder 2 and the lateral hydraulic loading oil cylinder 5, and the pulling pressure sensors and the displacement sensors are both connected to an electrical control system.
The lateral loading device, the longitudinal loading device and the crushing loading device are all arranged on a gantry frame. And a support for crushing the hydraulic loading oil cylinder is arranged on a main beam of the gantry frame. The gantry frame is arranged on the rail, the longitudinal loading position of the tested tractor is adjusted by moving the gantry frame on the rail during a longitudinal loading test, and the transverse loading position of the gantry frame is adjusted by driving a screw rod I through a motor I arranged on the crushing loading beam to drive a support I and a longitudinal loading oil cylinder to move on the crushing loading beam. When a crushing loading test is carried out, the adjustment in the vertical direction is realized by driving the crushing loading beam to move downwards through the crushing hydraulic loading oil cylinder 1 on the main beam of the gantry frame. The longitudinal hydraulic loading oil cylinder 2 is installed on the first support through a rotating longitudinal mechanism, and the longitudinal hydraulic loading oil cylinder 2 can rotate for a certain angle in the horizontal direction so as to adapt to loading of the tested tractor protection device in the front and back directions. The transverse position of the longitudinal hydraulic loading oil cylinder is fixed by a self-locking mechanism of the screw rod. The lateral loading test is realized by the lateral pushing hydraulic loading oil cylinders 5 on two sides, so that the width is reduced as much as possible, and the occupied area is reduced. The tractor to be tested is fixed in the whole test process, and only a few bolts of the main gantry frame footing need to be fixed during the test. The general structure of the device is schematically shown in figure 1.
A longitudinal loading device: the height of the movable cross beam can be adjusted by using bolt holes and bolts on the upright posts of the gantry frame, so that the longitudinal hydraulic loading oil cylinder can perform longitudinal loading tests on tested tractors with different heights. The hydraulic pump station provides a power source for the longitudinal hydraulic loading oil cylinder to carry out loading, and the load size and the displacement variation in the test process are obtained through a pressure sensor connected in series between the longitudinal hydraulic loading oil cylinder and the tested protection device and a displacement sensor connected in parallel between the longitudinal hydraulic loading oil cylinder and the loading device.
The side loading device comprises: the hydraulic pump station is used as a power source to drive one of the two lateral hydraulic loading oil cylinders to carry out loading, the tension pressure sensor is installed between the lateral hydraulic loading oil cylinder and the tested protection device in series, and the displacement sensor is used for acquiring the variation of loading load and displacement in the test process. The lateral hydraulic loading oil cylinder 5 is fixed on the upright post of the gantry frame through a spherical hinge and can swing in small two degrees of freedom.
Crushing the device: the load is carried out by the crushing loading beam 4 and two crushing hydraulic loading oil cylinders, a pulling pressure sensor is arranged at the end part of the crushing hydraulic loading oil cylinder to directly measure the crushing resultant force, and the downward displacement of the beam is the acting force displacement.
The three devices perform A/D conversion on the acquired data through a high-speed acquisition card, then send the data to an electrical control system for data processing, then display the processed result, and finally send corresponding instructions according to the set value and the processed result to control the size of the loading load so as to realize automatic control of the whole test process.
Example 2
The mechanical loading device comprises a horizontal loading device and a crushing loading device.
As shown in fig. 2, the horizontal loading device includes a rotary bearing platform 24 for fixing the tractor protection device to be tested, a rotary loading platform 25 is arranged on one side of the rotary bearing platform 24, a vertical loading beam 21 is arranged on the upper portion of the rotary loading platform 25, a horizontal hydraulic loading cylinder 22 is arranged on the vertical loading beam 21 in the horizontal direction, a pulling pressure sensor 7 is arranged on the end portion of a piston of the horizontal hydraulic loading cylinder 22, a displacement sensor is arranged on the body of the horizontal hydraulic loading cylinder 22, and the pulling pressure sensor and the displacement sensor are both connected to an electrical control system.
The mechanical loading device adjusts the loading position in the longitudinal loading and lateral loading tests by rotating the bearing platform 24 and the rotating loading platform 25.
The crushing loading device comprises a crushing loading cross beam 4, one end of a crushing hydraulic loading oil cylinder 1 is hinged and fixed on a second base 26, the other end of the crushing hydraulic loading oil cylinder is hinged on an adjusting chain 23, the other end of the adjusting chain 23 is connected to the crushing loading cross beam 4, a pulling pressure sensor 7 is arranged at the connecting end of the crushing hydraulic loading oil cylinder 1 and the adjusting chain, the crushing hydraulic loading oil cylinder 1 is connected with a hydraulic station, and the pulling pressure sensor is connected to an electrical control system. The change of the load during loading is measured by the tension pressure sensor, the data of the tension pressure sensor is collected by the electric control system in real time, and fig. 3 is a schematic structural diagram of the crushing loading device in the embodiment.
Horizontal loading device: the rotary bearing platform 4 is formed by welding sectional materials, and is provided with a gear mechanism capable of rotating. The lifting and rotating motion of the loading oil cylinder can be realized by rotating the loading support, and the bolt is locked to brake after the adjustment is finished. The hydraulic station provides pressure oil for the loading oil cylinder, the speed and the pressure of the loading oil cylinder are controlled through the proportional speed regulating valve, and the top end of a piston rod of the oil cylinder is provided with a tension pressure sensor for measuring the loading load during the strength test of the protection device.
Crushing the loading device: the crushing loading cross beam is a welded beam formed by welding two I-shaped steels, sufficient strength and rigidity are guaranteed, the loading part is realized by two crushing hydraulic loading oil cylinders, one end of each crushing hydraulic loading oil cylinder is hinged and fixed on the base, the other end of each crushing hydraulic loading oil cylinder is hinged on the adjusting chain, and a load is applied to the tractor protection device in the vertical direction to perform crushing loading tests during the tests. Two hydraulic loading oil cylinders must enable the loading cross beam to be kept horizontal when loading. The loading height position of the crushing device can be adjusted in the vertical direction through two adjusting chains according to the height of the tractor protection device to be tested. After the crushing loading test is finished, the crushing loading beam can be lifted and placed on the corresponding open ground through the travelling crane.
Example 3
The mechanical loading device comprises a horizontal loading device and a crushing loading device. The horizontal loading device comprises a second vertical loading beam 33 and a horizontal hydraulic loading oil cylinder 22 which is horizontally arranged on the second vertical loading beam 33, the horizontal hydraulic loading oil cylinder 22 is connected to a hydraulic station, a pulling pressure sensor 7 is arranged at the end part of a piston of the horizontal hydraulic loading oil cylinder 22, a displacement sensor is arranged on a body of the horizontal hydraulic loading oil cylinder 22, and the pulling pressure sensor and the displacement sensor are both connected to an electric control system.
Fig. 5 is a detailed structural diagram of a horizontal loading device of the mechanical loading device in embodiment 3, which includes a base 34, a second vertical loading beam 33 is disposed on the first base 34, a vertical direction adjusting device 35 is disposed in the vertical direction of the second vertical loading beam 33, the vertical direction adjusting device 35 includes a first lead screw nut disposed in the vertical direction of the second vertical loading beam 33, a first motor is connected with the first lead screw nut, and the adjustment of the upper and lower positions of the horizontal hydraulic loading cylinder is realized by the control of the first motor and the self-locking structure of the first lead screw nut, so as to perform a horizontal loading test on tractor protection devices with different heights to be tested.
The horizontal direction fine adjustment device 36 comprises a second lead screw nut arranged in the horizontal direction, a second motor is connected with the second water lead screw nut, and the left and right positions of the horizontal hydraulic loading oil cylinder are adjusted through the control of the second motor and a self-locking structure of the lead screw nut, so that the accurate control of the horizontal loading device on the loading position of the horizontal hydraulic loading oil cylinder during the test is ensured.
In the embodiment, the horizontal loading device is moved by the travelling crane, and the loading positions during longitudinal loading and lateral loading tests are adjusted by the horizontal fine adjustment device of the travelling crane.
The crush loading apparatus has the same structure as that of embodiment 2. The hydraulic loading device comprises a crushing loading beam, two crushing hydraulic loading oil cylinders, and other components such as a pulling pressure sensor, a displacement sensor, a hydraulic station, an electrical control system and the like. The change of the displacement is measured by a displacement sensor during loading, the change of the load is measured by a tension and compression) force sensor, an electrical control system collects signals of the displacement sensor and data of the tension (compression) force sensor in real time, and a change curve of the load and the displacement is drawn according to the collected data.
Horizontal loading device: the lateral loading and longitudinal loading tests of the tested tractor protective device can be realized by adjusting the loading position of the horizontal loading device through crane hoisting. The upper part of the horizontal loading device in the vertical direction is provided with a screw-nut structure, and the upper and lower positions of the hydraulic loading oil cylinder can be adjusted under the driving of the motor according to the heights of different tested tractor protection devices, so that the whole horizontal loading test is completed. The horizontal fine-tuning device is also of a screw rod nut structure in the horizontal direction, the motor is installed at the right end of the screw rod, and the fine-tuning device can be driven by the motor to achieve fine tuning of the hydraulic loading oil cylinder on the horizontal position of the hydraulic loading oil cylinder, so that accurate control of the loading position of the horizontal loading device during testing is guaranteed.
The gantry frame with the integrated structure in the embodiment 1 is compact in structure and convenient to load, namely longitudinal loading devices, lateral loading devices and crushing loading devices are all designed on the gantry frame, but the whole volume is too large, and five hydraulic loading oil cylinders are needed, so that the cost is relatively high. In the embodiment 2 and the embodiment 3, the hydraulic loading device consists of a horizontal loading device and a crushing device, the two schemes only need three hydraulic loading oil cylinders, and the design cost is lower than that of five hydraulic loading oil cylinders in the embodiment 1, so the embodiment 2 and the embodiment 3 are considered to be selected to reduce the cost. Then, by comparing the example 2 with the example 3, it is found that the crushing loading devices of the example 2 and the example 3 are both composed of a loading beam and two hydraulic loading cylinders, the structure is simple, the operation is relatively simple, and the crushing loading beam needs to be lifted by a crane to perform the crushing loading test.
The test method of the tractor protective device strength test system is to simulate the load on the protective device when a tractor turns over backwards or sideways by carrying out longitudinal loading, lateral loading and crushing loading tests on the tractor protective device so as to test the strength performance of the protective device and the protection effect of the protective device on a driver. The test system can perform complete strength test on the tractor protection device, the test is rapid, the hydraulic loading system is reliable and convenient to require, and the measured parameters are collected, processed and recorded by a computer, so that test data collection and test report compiling are automatically completed. The experimental items and sequence at the time of the experiment were as follows: (a) a first longitudinal loading test; (b) a first crush test; (c) performing a side loading test; (d) performing a second crush test; (e) second longitudinal loading test.
1) First longitudinal loading test. In the first longitudinal load test, for tractors whose rear axles support at least 50% of their own mass, the longitudinal load is applied to the rear of the guard (see figure 6), while the other tractors are applied to the front of the guard. The loading direction is on the opposite side of the side load if it is on the rear and on the same side of the side load if it is on the front. The load should be applied to the uppermost cross member of the tractor guard parallel to the longitudinal central plane of the tractor.
The applied load is loaded at a location inward 1/6 width of the tractor guard outermost corner. The length of the rigid beam which is arranged in front of the hydraulic loading oil cylinder and used for uniformly distributing load must be greater than or equal to 1/3 of the width of the tractor protective device.
2) The second longitudinal loading test was performed. The second longitudinal loading test was performed in a direction opposite to the first longitudinal loading and was loaded at the angle furthest from it.
3) And (4) performing a side loading test. As shown in fig. 7, the side load should be applied perpendicular to the longitudinal center plane when the side load test is performed. The action point is 85mm in front of the mark point of the external seat of the tractor protective device; in the case of a tractor traveling in both directions, the point of action is located midway between the guard and the seat index point.
When a side-tipping accident occurs, if it can be determined that a particular portion of the side of the guard first contacts the ground, a side loading test should be performed at that portion. For a tractor with two uprights, loading should be done at its uppermost portion regardless of the seat index point. For tractors with seats not in the center of the tractor or with guards not of symmetrical construction, the side load should be loaded on the side where it is most likely to cause ingress into the personal accommodation area. The stiffening beam used to provide uniform loading should be as long as possible, preferably up to a maximum of 700 mm.
4) First crush test. In performing the first crush test, the crush load should be applied to the same side of the tractor guard as the first longitudinal load. During the test, the crushing cross beam is placed on the top of the rear part of the tractor protection device (see figure 8), and the crushing load acts on the longitudinal reference plane of the tractor. The applied crushing force is Fr＝20mt(N) is provided. This crushing force must be maintained for more than 5 seconds when acting on the tractor guard.
If the top of the guard is not able to fully bear the full crush load, the load should continue to be applied until its top is deformed into contact with the rear part which supports the mass of the tractor when the vehicle is tipped over. Then unloading, changing the loading position of the load so as to place the rigid beam at a position where the rigid beam can support the tractor when the tractor turns over, and then applying the whole load.
5) Second crush test. In the second crush test, the crush load should be applied opposite to the first longitudinal loadOne side. In the test, the crushing beam is placed on the front top of the tractor protective device (see figure 9), and the load acts on the longitudinal reference plane. The applied crushing force is Fr＝20mt(N) is provided. This crushing force must be maintained for more than 5 seconds when acting on the guard. The same is true for the first crush test of 2.2.4 if the top of the guard cannot fully withstand the full crush load.
The above description is only of the preferred embodiments of the present invention, and it should be noted that: it will be apparent to those skilled in the art that various modifications and adaptations can be made without departing from the principles of the invention and these are intended to be within the scope of the invention.
Claims (9)
1. The utility model provides a tractor protector strength test system's mechanical loading device which characterized in that: the hydraulic loading device comprises a horizontal loading device and a crushing loading device, wherein a horizontal hydraulic loading oil cylinder is arranged on the horizontal loading device, a crushing hydraulic loading oil cylinder is arranged on the crushing loading device, the tail ends of pistons of the horizontal hydraulic loading oil cylinder and the crushing hydraulic loading oil cylinder are respectively provided with a pulling pressure sensor, a displacement sensor is arranged on a body of the horizontal hydraulic loading oil cylinder, and the pulling pressure sensor and the displacement sensor are both connected to an electrical control system.
2. The mechanical loading device of the tractor guard strength test system of claim 1, wherein: the crushing loading device comprises a gantry frame (6), the gantry frame (6) is arranged on a track, a crushing hydraulic loading oil cylinder (1) is vertically arranged on a main cross beam of the gantry frame (6) and is connected with a crushing loading cross beam (4) which is horizontally arranged, the inner sides of two stand columns of the gantry frame (6) are provided with tracks for up-and-down movement of the crushing loading cross beam (4), and the tracks are provided with a plurality of bolt holes for fixing the position of the crushing loading cross beam (4) through bolts.
3. The mechanical loading device of the tractor guard strength test system of claim 2, wherein: the horizontal loading device comprises a longitudinal loading device and a lateral loading device, the horizontal hydraulic loading oil cylinder comprises a longitudinal hydraulic loading oil cylinder (2) and a lateral hydraulic loading oil cylinder (5), the longitudinal loading device comprises a first lead screw arranged on the upper surface of the crushing loading cross beam and along the trend of the crushing loading cross beam (4), the first lead screw is connected with a first motor, a first support is installed in a matched mode with the first lead screw, the longitudinal hydraulic loading oil cylinder (2) is installed on the first support, and the longitudinal hydraulic loading oil cylinder (2) is perpendicular to the crushing loading cross beam (4) on the same horizontal plane; the lateral loading device comprises two lateral hydraulic loading oil cylinders (5) in the horizontal direction, and the two lateral hydraulic loading oil cylinders (5) are respectively installed on the inner sides of two upright posts of the door frame (6).
4. The mechanical loading device of the tractor guard strength test system of claim 1, wherein: the horizontal loading device comprises a rotary bearing platform (24) for fixing the tractor protection device to be tested, wherein the rotary loading platform (25) is arranged on one side of the rotary bearing platform (24), a first vertical loading beam (21) is arranged on the upper portion of the rotary loading platform (25), and a horizontal hydraulic loading oil cylinder (22) is arranged on the first vertical loading beam (21) in the horizontal direction.
5. The mechanical loading device of the tractor guard strength test system of claim 4, wherein: the crushing loading device comprises a crushing loading cross beam (4), one end of a crushing hydraulic loading oil cylinder (1) is hinged and fixed on the second base (26), the other end of the crushing hydraulic loading oil cylinder is hinged on an adjusting chain (23), the other end of the adjusting chain (23) is connected to the crushing loading cross beam (4), a pulling pressure sensor (7) is arranged at the connecting end of the crushing hydraulic loading oil cylinder (1) and the adjusting chain, and the crushing hydraulic loading oil cylinder (1) is connected with a hydraulic station.
6. The mechanical loading device of the tractor guard strength test system of claim 1, wherein: the horizontal loading device comprises a second vertical loading beam (33), a horizontal hydraulic loading oil cylinder (22) is horizontally arranged on the second vertical loading beam (33), and the horizontal hydraulic loading oil cylinder (22) is connected to a hydraulic station.
7. The mechanical loading device of the tractor guard strength test system of claim 1, wherein: the horizontal loading device comprises a first base (34), a second vertical loading beam (33) is arranged on the first base (34), and a vertical direction adjusting device (35) is arranged in the vertical direction of the second vertical loading beam (33).
8. The mechanical loading device of the tractor guard strength test system of claim 7, wherein: the vertical direction adjusting device (35) comprises a screw nut I which is arranged along the vertical direction of the vertical loading beam II (33), a motor I is connected with the screw nut I, and the adjustment of the upper position and the lower position of the horizontal hydraulic loading oil cylinder is realized through the control of the motor I and a self-locking structure of the screw nut I.
9. The mechanical loading device of the tractor guard strength test system of claim 7, wherein: the horizontal hydraulic loading oil cylinder is characterized by further comprising a horizontal fine adjustment device (36), the horizontal fine adjustment device (36) comprises a second lead screw nut arranged in the horizontal direction, a second motor is connected with the second water lead screw nut, and the left and right positions of the horizontal hydraulic loading oil cylinder are adjusted through control of the second motor and a self-locking structure of the lead screw nut.
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| CN201920029901.1U CN209858326U (en) | 2019-01-09 | 2019-01-09 | Mechanical loading device of tractor protector strength test system |
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| CN201920029901.1U CN209858326U (en) | 2019-01-09 | 2019-01-09 | Mechanical loading device of tractor protector strength test system |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111966016A (en) * | 2020-08-17 | 2020-11-20 | 江苏省农业机械试验鉴定站 | Measurement and control system of static load strength test system of tractor protective device |
| CN112213200A (en) * | 2020-10-14 | 2021-01-12 | 江苏省农业机械试验鉴定站 | Portable protector intensity test device and control system |
| CN113728759A (en) * | 2021-07-29 | 2021-12-03 | 盐城市农业机械试验鉴定站 | Agricultural is with seeding tectorial membrane device |
| CN114216690A (en) * | 2020-12-04 | 2022-03-22 | 襄阳达安汽车检测中心有限公司 | Automobile anti-collision protection device strength detection system |
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2019
- 2019-01-09 CN CN201920029901.1U patent/CN209858326U/en active Active
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111966016A (en) * | 2020-08-17 | 2020-11-20 | 江苏省农业机械试验鉴定站 | Measurement and control system of static load strength test system of tractor protective device |
| CN111966016B (en) * | 2020-08-17 | 2022-04-05 | 江苏省农业机械试验鉴定站 | Measurement and control system of static load strength test system of tractor protective device |
| CN112213200A (en) * | 2020-10-14 | 2021-01-12 | 江苏省农业机械试验鉴定站 | Portable protector intensity test device and control system |
| CN114216690A (en) * | 2020-12-04 | 2022-03-22 | 襄阳达安汽车检测中心有限公司 | Automobile anti-collision protection device strength detection system |
| CN114216690B (en) * | 2020-12-04 | 2022-08-09 | 襄阳达安汽车检测中心有限公司 | Automobile anti-collision protection device strength detection system |
| CN113728759A (en) * | 2021-07-29 | 2021-12-03 | 盐城市农业机械试验鉴定站 | Agricultural is with seeding tectorial membrane device |
| CN113728759B (en) * | 2021-07-29 | 2024-04-12 | 盐城市农业机械试验鉴定站 | Agricultural seeding tectorial membrane device |
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