CN103743579A - Caterpillar track ground pressure simulation test device - Google Patents
Caterpillar track ground pressure simulation test device Download PDFInfo
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- CN103743579A CN103743579A CN201410000100.4A CN201410000100A CN103743579A CN 103743579 A CN103743579 A CN 103743579A CN 201410000100 A CN201410000100 A CN 201410000100A CN 103743579 A CN103743579 A CN 103743579A
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- crawler belt
- bogie wheel
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Abstract
The invention discloses a caterpillar track ground pressure simulation test device, which belongs to the field of the ground pressure test. The caterpillar track ground pressure simulation test device comprises a bed frame, a tensile force loading device, bogie wheel loading devices and a caterpillar track, wherein the bed frame is a fixed saddle piece and is firmly connected with the ground, the lower surface of the bed frame is provided with the tensile force loading device and a plurality of independent bogie wheel loading devices in parallel, the tensile force loading device is connected with the caterpillar track, and the lower end of each bogie wheel loading device is contacted with the caterpillar track. The caterpillar track ground pressure simulation test device is a static test device for simulating the ground pressure distribution of a rubber caterpillar track or a steel caterpillar track in different structures and under different terrains through a caterpillar track tension device and the bogie wheel loading devices, the distribution rule of the caterpillar track ground pressure can be disclosed, and the design of a caterpillar track chassis structure can be instructed.
Description
Technical field
The present invention relates to a kind of crawler belt grounding pressure simulating test device, relate to specifically a kind ofly by track takeup and bogie wheel charger, simulate the static tester that rubber belt track under different structure and different terrain or steel ground contact pressure of track distribute.
Background technology
Endless-track vehicle divides and is mainly divided into rubber-tracked vehicle and steel endless-track vehicle by the material of crawler belt, and in the course of the work, crawler belt acts on ground compressive load per unit area and is called " grounding pressure " endless-track vehicle.Grounding pressure is a key design parameter of endless-track vehicle design, obtains accurately the grounding pressure of endless-track vehicle, for its trafficability characteristic in Different Ground of prediction, and the hauling ability of vehicle and to carry out the endless-track vehicle mechanical analysis of travelling be very important.
In prior art, the preparation method of endless-track vehicle grounding pressure mainly contains four kinds of theoretical calculation, conventional pressure sensor method, presser sensor Film Dosimeter and pressure distribution sensing sheet methods.For theoretical calculation, its result relies on theoretical formula completely, not having any test method and device can calculate by proof theory, and further instruct the structural design of crawler body, grounding pressure calculate accurately whether, will directly affect the structural design of crawler body or the ground processing of working-yard.
Conventional pressure sensor method is mainly car load ground connection counter-force method of testing at present, be by buried pressure transducer in ground, model machine carries out field test in the above, the problem that this method mainly exists has:
1. mainly carry out complete vehicle test, cost is high, and the R&D cycle is long, can not finely instruct the structural design of crawler body in earlier stage;
2. because needs destroy ground, pressure transducer heeling-in difficulty is larger, if adopt a small amount of several pressure transducer, the measuring accuracy of grounding pressure and accuracy are not high yet;
3. vehicle condition has considerable influence to measuring, and such as the attitude of car body all has influence on axle load, distributes;
4. be difficult to carry out analogy test.After installation, be equivalent to only a kind of caterpillar belt structure, a kind of landform be tested, still cannot test and disclose the ground pressure regularity of distribution by analogy, cannot complete the layout that further completes heavy burden train, the optimal design task of driving angle intensity etc.
Presser sensor Film Dosimeter, being mainly used at present the ground pressure of tire on hardstand measures, require the condition of test harsher, different environment temperatures and humidity result differ greatly, and the result that on film, every point pressure is measured is in addition the peak value of this point pressure in measuring process.
Pressure distribution sensing sheet is the sensor that a kind of emerging gaging pressure distributes, and its principal feature is that thin thickness, flexibility are large, environmental suitability is strong, and the result that on sensing sheet, every point pressure is measured is real-time.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of crawler belt grounding pressure simulating test device, by track takeup and bogie wheel charger, simulate rubber belt track or steel ground contact pressure of track static distribution state under different structure and different terrain, the regularity of distribution that discloses ground contact pressure of track, instructs the design of crawler body structure.
For solving the problems of the technologies described above, the technical solution used in the present invention is: a kind of crawler belt grounding pressure simulating test device, it is characterized in that comprising pedestal, tensile force charger, bogie wheel charger and crawler belt, described pedestal is fixed rack, and there is stable being connected with ground, the lower surface of pedestal is provided with side by side tensile force charger and number overlaps independently bogie wheel charger, and described tensile force charger is connected with crawler belt, and the lower end of bogie wheel charger contacts with crawler belt.
Said structure is described further, described tensile force charger is mainly by servo pulling force output unit, pulling force sensor, crawler belt floating clamp and crawler belt stationary fixture composition, upper end and the pedestal of described servo pulling force output unit are fixed, the lower end of servo pulling force output unit is connected with crawler belt floating clamp through pulling force sensor, crawler belt floating clamp is connected with the left end of crawler belt, crawler belt is after bogie wheel charger, its right-hand member is connected with crawler belt stationary fixture, and crawler belt stationary fixture is fixed on pedestal.
Said structure is described further, also comprises idle pulley, described idle pulley is located at crawler belt left end, and contacts with track surface, and idle pulley is the adjustable guide wheel in position, and the wheel shaft of idle pulley is connected with pedestal.
Said structure is described further, described bogie wheel charger is mainly comprised of servo pressure output unit, pull pressure sensor and heavy burden train, the upper end of described servo pressure output unit is slidably matched by chute and pedestal, and between servo pressure output unit and pedestal, be provided with trip bolt, the lower end of servo pressure output unit is fixed through pull pressure sensor and heavy burden train.
Said structure is described further, and described heavy burden train is comprised of more than one bogie wheel, and crawler belt be longitudinally symmetrical and interval adjustable.
Said structure is described further, the circular slab stack that described bogie wheel is above by 2, diameter is identical forms, circular slab is assembled by the annular slab that more than 2 internal diameter and external diameter progressively increase, and is distributed with the through hole for being located by connecting on each annular slab.
Said structure is described further, and described crawler belt is rubber belt track or steel crawler belt.
The beneficial effect that adopts technique scheme to produce is: by simulating test device of the present invention, carry out test of many times, can isolate the material of crawler belt, thickness, width and ground contact length, the layout of heavy burden train (comprises quantity, interval), the layout of bogie wheel (comprises columns, width, diameter, interval), bogie wheel load, track tensioning force, and the impact that respectively ground contact pressure of track distributed of the factor such as landform, disclose the regularity of distribution of ground contact pressure of track, instruct crawler body structural design, thereby reduction external motion resistance, improve hauling ability.
Accompanying drawing explanation
Below in conjunction with the drawings and specific embodiments, the present invention is further detailed explanation.
Fig. 1 is structural representation of the present invention;
Fig. 2 is partial view A in Fig. 1, for heavy burden train is installed the bogie wheel schematic diagram of different columns, Fig. 2 a is symmetrical 1 bogie wheel of installing, and Fig. 2 b be 2 bogie wheels of symmetrical installation, Fig. 2 c is symmetrical 3 bogie wheels of installing, and Fig. 2 d is that symmetry is installed 3 bogie wheels but interval increase;
Fig. 3 a is that single bogie wheel is by 6 annular slab × 6 circular slab stack combinations schematic diagram;
Fig. 3 b is the left view of Fig. 3 a;
In figure: the servo pulling force output unit of 1-, 2-pulling force sensor, 3-crawler belt floating clamp, 4-crawler belt, 5-idle pulley, 6-artificially generated terrain, 7-heavy burden train, 8-crawler belt stationary fixture, 9-pull pressure sensor, the servo pressure output unit of 10-, 11-pedestal, 12-bogie wheel, 13-annular slab, 14-circular slab.
Embodiment
The present invention is a kind of crawler belt grounding pressure simulating test device, and as shown in Figure 1, mainly by pedestal 11, tensile force charger and the number independent bogie wheel charger of cover and crawler belt 4 form, and wherein pedestal 11 is fixed rack, and has stable being connected with ground.The lower surface of pedestal 11 is provided with side by side tensile force charger and number overlaps independently bogie wheel charger, and tensile force charger is connected with crawler belt 4, and the lower end of bogie wheel charger contacts with crawler belt 4.
In the present invention, tensile force charger is mainly by servo pulling force output unit 1, pulling force sensor 2, crawler belt floating clamp 3 and crawler belt stationary fixture 8 form, the upper end of servo pulling force output unit 1 and pedestal 11 are fixing, servo pulling force output unit 1 can servo apply hydraulic pressure oil cylinder or the version such as servo-electric bar, and be pulling force closed-loop control, can make pulling force be stabilized in a numerical value.The lower end of servo pulling force output unit 1 is connected with crawler belt floating clamp 3 through pulling force sensor 2, crawler belt floating clamp 3 is connected with the left end of crawler belt 4, crawler belt 4 is after bogie wheel charger, its right-hand member is connected with crawler belt stationary fixture 8, crawler belt stationary fixture 8 is fixed on pedestal 11, as shown in Figure 1.
Tensile force charger is strained crawler belt 4 by servo pulling force output unit 1, and by pulling force sensor 2, obtain the tensile force size of crawler belt 4, track tensioning force is carried out to controllable adjustment, thereby realize the impact that the different track tensioning forces of simulation distribute on crawler belt 4 ground pressures.
The present invention also comprises idle pulley 5, and idle pulley 5 is located at crawler belt 4 left ends, and with crawler belt 4 Surface Contacts, the guide wheel that idle pulley 5 can be adjusted up and down for position, after adjusting, the wheel shaft of idle pulley 5 is fixedly connected with pedestal 11.Idle pulley 5 is used for maintaining the shape of crawler belt 4, regulates the tightness of crawler belt 4 by position adjustment, to simulate more accurately the grounding pressure of crawler belt 4.
Bogie wheel charger is mainly used in simulating the bogie wheel load-up condition on crawler belt 4, therefore bogie wheel charger is mainly comprised of servo pressure output unit 10, pull pressure sensor 9 and heavy burden train 7, the quantity of bogie wheel charger and between left and right distance are equal to respectively columns and the row interval of the bogie wheel in simulated crawler travel system, are also equivalent to adjust crawler bearing length simultaneously.The upper end of servo pressure output unit 10 is slidably matched by chute and pedestal 11, and be provided with trip bolt between servo pressure output unit 10 and pedestal, the lower end of servo pressure output unit 10 is fixing with heavy burden train 7 through pull pressure sensor 9, as shown in Figure 1.
Servo pressure output unit 10 in the present invention can servo apply hydraulic pressure oil cylinder or the version such as servo-electric bar, and is pressure closed-loop control, can make pulling force and pressure stability at a numerical value; Servo pressure output unit 10 can move left and right by chute on pedestal 11, to change the distance between each bogie wheel charger, thus the impact that the heavy burden train 7 that simulation different interval is arranged distributes on crawler belt 4 grounding pressures.
Heavy burden train 7 is comprised of more than one bogie wheel 12, and crawler belt 4 longitudinally on be symmetrical and interval adjustable.Circular slab 14 stacks that bogie wheel 12 is above by 2, diameter is identical form, and circular slab 14 is assembled by the annular slab 13 that more than 2 internal diameter and external diameter progressively increase, and on each annular slab 13, is distributed with the through hole for being located by connecting.
In accompanying drawing 2, heavy burden train 7 is comprised of the bogie wheel 12 of different columns, and crawler belt 4 longitudinally on be symmetrical and interval adjustable, to simulate the impact that the bogie wheel 12 of different numbers distributes on crawler belt 4 grounding pressures.
As shown in Figure 3, for the further different bogie wheel width of simulation and the impact of diameter on crawler belt 4 ground pressures, bogie wheel 12 adopts annular slab 13 assembling combination of different-diameter same thickness to form.Internal diameter and the external diameter of annular slab 13 progressively increase, and can be spliced into the circular slab 14 of different-diameter, and multiple identical circular slabs 14 superpose, and can form the bogie wheel 12 of different in width; On each annular slab 13, be distributed with some through holes, these through holes can penetrate fixed band and straight pin and carry out axially and radially fixing, and then splice the bogie wheel 12 of different-diameter and different in width.
For practicality of the present invention is described, be now exemplified below: certain vehicle wish adopts 2 or multiple crawler travel device, walks, as sand ground, anthropogenic soil, snowfield etc. in certain class landform.With certain crawler unit wherein, be modeled as example explanation method of testing.The load-bearing of supposing this crawler unit is G, utilizes simulating test device in the present invention to carry out grounding pressure testing procedure as follows:
Step 1: according to design, the following parameter of initial option: crawler width B, ground contact length L, bogie wheel columns R, the quantity N of every row bogie wheel
1, N
2... N
r, the width b of bogie wheel, radius r, the interval between the interval between each row bogie wheel and every row bogie wheel, the width b' of idle pulley, radius r ', and the position of idle pulley.
Step 2: according to the landform of vehicle to run, the artificially generated terrain in allotment soil box, makes itself and vehicle approach by the parameter of landform.
Step 3: according to the columns R of bogie wheel, select R cover bogie wheel charger, according to the interval between each row bogie wheel, adjust the interval between each bogie wheel charger.
Step 4: according to width b and the radius r of bogie wheel, and the bogie wheel quantity of using, assembling out bogie wheel, each bogie wheel according to said method assembles, and first uses annular slab to be superposed to circular slab, by circular slab stack, inserts fixed band and fixed pin etc.Equally according to width b', radius r ' assemble out the idle pulley meeting the demands.
Step 5: bogie wheel correspondence is mounted to heavy burden train, and each heavy burden train is mounted to corresponding bogie wheel charger.
Step 6: idle pulley and crawler belt are installed as Fig. 1, and are adjusted crawler belt lateral attitude, make its relatively each bogie wheel charger laterally placed in the middle.
Step 7: according to the interval between every row bogie wheel and the ground contact length of crawler belt, adjust the interval between each bogie wheel charger, interval between bogie wheel charger and tensile force charger, and the upper-lower position of idle pulley, should consider to be expert under walking apparatus load-bearing G in the position of idle pulley, the sinkage of artificially generated terrain.
Step 8: the tensile force of setting tensioning system is F, and this value will be remained unchanged by tensile force charger in simulation.By stable tensile force, be loaded on after F, pressure distribution sensing sheet or presser sensor film are affixed to the pre-earthed surface of crawler belt, and connect other peripherals of pressure distribution test.Now crawler belt unearthed.
Step 9: according to the crawler unit of design, set the loading force F of each bogie wheel charger
1, F
2... F
r, make F
1, F
2... F
rmeeting crawler belt with F is G to the general pressure on ground.
Step 10: the synchronous Slow loading of each bogie wheel charger, make crawler belt move closer to artificially generated terrain, approach in process.The pre-earthed surface of crawler belt keeps level.Finally make crawler belt ground connection, the loading force of each bogie wheel charger reaches default F
1, F
2... F
r.Record pressure distribution.
In test, the train of respectively bearing a heavy burden can adopt the bogie wheel of varying number, radius, width and different interval, and the interval of the train of respectively bearing a heavy burden can adjust, and can select the crawler belt of different in width, and crawler bearing length is capable of regulating also.According to the pressure distribution of gained, according to relevant calculating, derive, can the trafficability characteristic in this landform, running resistance, tractive force etc. make anticipation to vehicle, instruct the design of crawler unit, originally can further adjust as required correlation parameter.
The foregoing is only preferred embodiment of the present invention and oneself, not in order to limit the present invention, within the spirit and principles in the present invention all, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.
Claims (7)
1. a crawler belt grounding pressure simulating test device, it is characterized in that comprising pedestal (11), tensile force charger, bogie wheel charger and crawler belt (4), described pedestal (11) is fixed rack, and there is stable being connected with ground, the lower surface of pedestal (11) is provided with side by side tensile force charger and number overlaps independently bogie wheel charger, described tensile force charger is connected with crawler belt (4), and the lower end of bogie wheel charger contacts with crawler belt (4).
2. a kind of crawler belt grounding pressure simulating test device according to claim 1, it is characterized in that described tensile force charger is mainly by servo pulling force output unit (1), pulling force sensor (2), crawler belt floating clamp (3) and crawler belt stationary fixture (8) composition, the upper end of described servo pulling force output unit (1) and pedestal (11) are fixing, the lower end of servo pulling force output unit (1) is connected with crawler belt floating clamp (3) through pulling force sensor (2), crawler belt floating clamp (3) is connected with the left end of crawler belt (4), crawler belt (4) is after bogie wheel charger, its right-hand member is connected with crawler belt stationary fixture (8), crawler belt stationary fixture (8) is fixed on pedestal (11).
3. a kind of crawler belt grounding pressure simulating test device according to claim 2, characterized by further comprising idle pulley (5), described idle pulley (5) is located at crawler belt (4) left end, and with crawler belt (4) Surface Contact, idle pulley (5) is the adjustable guide wheel in position, and the wheel shaft of idle pulley (5) is connected with pedestal (11).
4. a kind of crawler belt grounding pressure simulating test device according to claim 1, it is characterized in that described bogie wheel charger is mainly comprised of servo pressure output unit (10), pull pressure sensor (9) and heavy burden train (7), the upper end of described servo pressure output unit (10) is slidably matched by chute and pedestal (11), and between servo pressure output unit (10) and pedestal (11), be provided with trip bolt, the lower end of servo pressure output unit (10) is fixing through pull pressure sensor (9) and heavy burden train (7).
5. a kind of crawler belt grounding pressure simulating test device according to claim 4, is characterized in that described heavy burden train (7) is comprised of more than one bogie wheel (12), and crawler belt (4) be longitudinally symmetrical and interval adjustable.
6. a kind of crawler belt grounding pressure simulating test device according to claim 5, it is characterized in that circular slab (14) stack that described bogie wheel (12) is above by 2, diameter is identical forms, circular slab (14) is assembled by the annular slab (13) that more than 2 internal diameter and external diameter progressively increase, and each annular slab is distributed with the through hole for being located by connecting on (13).
7. according to a kind of crawler belt grounding pressure simulating test device described in claim 1,2 or 3, it is characterized in that described crawler belt (4) is rubber belt track or steel crawler belt.
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| CN201410000100.4A CN103743579B (en) | 2014-01-02 | 2014-01-02 | A kind of caterpillar track ground pressure simulation test device |
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| CN201410000100.4A CN103743579B (en) | 2014-01-02 | 2014-01-02 | A kind of caterpillar track ground pressure simulation test device |
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| CN103743579A true CN103743579A (en) | 2014-04-23 |
| CN103743579B CN103743579B (en) | 2016-08-17 |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104132764A (en) * | 2014-08-14 | 2014-11-05 | 中联重科股份有限公司 | Caterpillar band tensioning force measuring device and caterpillar band vehicle comprising caterpillar band tensioning force measuring device |
| CN105067285A (en) * | 2015-07-30 | 2015-11-18 | 中国人民解放军装甲兵工程学院 | Test method for testing ground pressure of tracked vehicle |
| CN107702925A (en) * | 2017-08-04 | 2018-02-16 | 中国航空工业集团公司西安飞机设计研究所 | A kind of caterpillar track load experimental rig and method |
| CN110208097A (en) * | 2019-04-26 | 2019-09-06 | 煤炭科学技术研究院有限公司 | Than pressure testing equipment, than pressure and outer load test method |
| KR102036520B1 (en) * | 2018-08-10 | 2019-10-25 | 오철규 | Caterpillar grounding force measurement system |
| CN110470491A (en) * | 2019-09-05 | 2019-11-19 | 湖南沃工智电科技有限公司 | A kind of crawler tractor production crawler belt antiskid device for detecting performance |
| CN111910609A (en) * | 2020-07-31 | 2020-11-10 | 浙江三一装备有限公司 | Foundation bearing capacity test method |
| CN112113694A (en) * | 2020-09-11 | 2020-12-22 | 太原科技大学 | Dynamic measuring device for specific grounding pressure of crawler device |
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| CN104132764A (en) * | 2014-08-14 | 2014-11-05 | 中联重科股份有限公司 | Caterpillar band tensioning force measuring device and caterpillar band vehicle comprising caterpillar band tensioning force measuring device |
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| CN110208097A (en) * | 2019-04-26 | 2019-09-06 | 煤炭科学技术研究院有限公司 | Than pressure testing equipment, than pressure and outer load test method |
| CN110208097B (en) * | 2019-04-26 | 2020-05-15 | 煤炭科学技术研究院有限公司 | Specific pressure test equipment and specific pressure and external loading test method |
| CN110470491A (en) * | 2019-09-05 | 2019-11-19 | 湖南沃工智电科技有限公司 | A kind of crawler tractor production crawler belt antiskid device for detecting performance |
| CN110470491B (en) * | 2019-09-05 | 2020-12-29 | 湖南沃工智电科技有限公司 | Track anti-skid property detection device for production of track tractor |
| CN111910609A (en) * | 2020-07-31 | 2020-11-10 | 浙江三一装备有限公司 | Foundation bearing capacity test method |
| CN112113694A (en) * | 2020-09-11 | 2020-12-22 | 太原科技大学 | Dynamic measuring device for specific grounding pressure of crawler device |
| CN112113694B (en) * | 2020-09-11 | 2022-05-20 | 太原科技大学 | Dynamic measuring device for ground pressure ratio of crawler device |
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