CN104964019A - Transmission mechanism of crawler-type machine - Google Patents
Transmission mechanism of crawler-type machine Download PDFInfo
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- CN104964019A CN104964019A CN201510367378.XA CN201510367378A CN104964019A CN 104964019 A CN104964019 A CN 104964019A CN 201510367378 A CN201510367378 A CN 201510367378A CN 104964019 A CN104964019 A CN 104964019A
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- 230000005540 biological transmission Effects 0.000 title claims abstract description 262
- 230000007246 mechanism Effects 0.000 title claims abstract description 142
- 230000002706 hydrostatic effect Effects 0.000 claims abstract description 82
- 239000002699 waste material Substances 0.000 abstract description 4
- 230000009347 mechanical transmission Effects 0.000 abstract description 3
- 230000033001 locomotion Effects 0.000 description 15
- 238000000034 method Methods 0.000 description 8
- 230000009471 action Effects 0.000 description 7
- 238000004519 manufacturing process Methods 0.000 description 5
- 238000009966 trimming Methods 0.000 description 5
- 230000015572 biosynthetic process Effects 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 238000003786 synthesis reaction Methods 0.000 description 4
- 230000001133 acceleration Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 3
- 230000007935 neutral effect Effects 0.000 description 3
- 230000002457 bidirectional effect Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000010720 hydraulic oil Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H47/00—Combinations of mechanical gearing with fluid clutches or fluid gearing
- F16H47/02—Combinations of mechanical gearing with fluid clutches or fluid gearing the fluid gearing being of the volumetric type
- F16H47/04—Combinations of mechanical gearing with fluid clutches or fluid gearing the fluid gearing being of the volumetric type the mechanical gearing being of the type with members having orbital motion
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D55/00—Endless track vehicles
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
- F16H61/26—Generation or transmission of movements for final actuating mechanisms
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H2712/00—Mechanisms for changing direction
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- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
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Abstract
The invention provides a transmission mechanism of a crawler-type machine. The transmission mechanism of the crawler-type machine comprises a power input device, a first hydrostatic transmission system, a second hydrostatic transmission system, a first planetary transmission mechanism, a second planetary transmission mechanism, a first power output device, a second power output device and a reversing device, wherein the first hydrostatic transmission system and the second hydrostatic transmission system are connected with the power input device, the first planetary transmission mechanism and the second planetary transmission mechanism are in transmission connection with the first hydrostatic transmission system and the second hydrostatic transmission system, the first power output device is connected with the first planetary transmission mechanism, the second power output device is connected with the second planetary transmission mechanism, and the reversing device is connected with the first planetary transmission mechanism or the second planetary transmission mechanism. According to the transmission mechanism of the crawler-type machine, high precision equipment is not needed for controlling the power output quantity of the two sides of the machine, and the cost is greatly reduced; meanwhile, due to the fact that the mechanical transmission efficiency usually can reach over 90%, waste of energy is avoided. Therefore, by means of the transmission mechanism of the crawler-type machine, the problems that in the prior art, the cost of the transmission mechanism is high, and the efficiency is low can be solved.
Description
Technical Field
The invention relates to a transmission mechanism, in particular to a transmission mechanism of a crawler-type machine tool.
Background
The transmission device is an intermediate device for transmitting the power of the prime mover to the working mechanism. For the crawler-type machine tool, the power of the prime motor is transmitted to the crawler through the transmission mechanism, so that the driving and steering of the crawler-type machine tool are realized, and the normal operation of the crawler-type machine tool is ensured. The steering of the crawler-type machine tool can be divided into three modes, namely edge cutting steering, differential steering and center steering. The edge cutting steering is mainly used for steering crawler-type machines in stopping, when the machines need to steer in stopping, one crawler is in low gear and the other crawler is in neutral position, and the machines steer by taking the center of the neutral position crawler as the circle center because the neutral position crawler has no power output. The differential steering is mainly used for steering the crawler-type machine tool during traveling, two crawler belts of the machine tool output different speeds respectively, one crawler belt of the machine tool is in a high gear, the other crawler belt of the machine tool is in a low gear, and the machine tool is steered towards the direction of the low-speed crawler belt due to the fact that the two crawler belts generate different speeds. The center steering is mainly used for steering between stops of crawler-type machines, two tracks of the machines output speeds with the same transmission ratio respectively, one is a forward gear, the other is a reverse gear, and the machines realize pivot steering by taking the center of a vehicle body as the center of a circle.
In general, a track-type implement mainly adopts the following three ways to realize transmission: 1. the mechanical friction clutch is combined with multi-stage gear transmission to realize driving or steering; the transmission mechanism can only realize the trimming steering of the machine tool, has small application range and higher requirement on the performance of the clutch, not only requires the clutch to reliably transmit torque and not generate the slipping phenomenon after combination, but also requires the clutch to be thorough and rapid when being separated. Meanwhile, this structure is not suitable for work in which an external load is greatly changed or steering operation is frequent. 2. Multi-stage gearing to a differential in combination with end brakes to effect drive and steering. The transmission mechanism can enable the machine tool to realize edge cutting steering and differential steering, and cannot realize center steering; the mode has higher requirement on the performance of the tail end brake, the brakes at two sides are required to output braking force with a certain proportion to realize differential steering or one side of the brakes at two sides is required to output enough braking torque to brake the other side without outputting the braking force to realize edge cutting steering, and a precise electric control system is required to be adopted to output the braking force with a certain proportion, so that the cost is higher. 3. The hydraulic pump outputs to two hydraulic motors through the independent hydraulic control element to drive the crawler belt to realize the driving and steering of the machine tool; the hydraulic control element is usually a servo valve, that is, two hydraulic oil pipes of the hydraulic pump are respectively connected with two servo valves, and the two servo valves respectively control two hydraulic motors to perform transmission. The mode can make up the defects of the two modes, can realize three steering modes of edge cutting steering, differential steering and center steering, and is the most common driving mode of the prior crawler-type machine tool.
At present, although the third mode can be adopted to realize three steering modes of driving, trimming steering, differential steering and central steering of the crawler-type machine tool, a high-precision servo valve control system is required to strictly control the driving force of the hydraulic motors at two sides in the transmission process so as to ensure that the crawler-type machine tool runs stably and safely, and therefore the manufacturing, maintenance and use costs of the implementation mode are high. Meanwhile, the hydraulic transmission efficiency is usually below 80%, which causes energy waste, and thus, the hydraulic transmission method has low efficiency and large loss.
Disclosure of Invention
The invention provides a transmission mechanism of a crawler-type machine tool, which aims to solve the problems of high cost and low efficiency of the transmission mechanism in the prior art.
The invention provides a transmission mechanism of a crawler-type machine tool, which comprises: a power input device; a first hydrostatic transmission system and a second hydrostatic transmission system connected with the power input device; a first planetary drive in driving connection with the first hydrostatic drive system and the second hydrostatic drive system, respectively; a second planetary transmission in driving connection with the first hydrostatic transmission system and the second hydrostatic transmission system, respectively; the first power output device is connected with the first planetary transmission mechanism, and the second power output device is connected with the second planetary transmission mechanism; and the reversing device is connected with the first planetary transmission mechanism or the second planetary transmission mechanism.
Preferably, the first planetary transmission mechanism comprises a first inner gear ring, a first sun gear, a first planet carrier and a first planet gear arranged on the first planet carrier, and the first planet gear is respectively engaged with the first inner gear ring and the first sun gear; the second planetary transmission mechanism comprises a second inner gear ring, a second sun gear, a second planet carrier and a second planet gear arranged on the second planet carrier, and the second planet gear is respectively in meshed connection with the second inner gear ring and the second sun gear; the first hydrostatic transmission system is in linkage connection with the first inner gear ring and the second inner gear ring respectively; the second hydrostatic transmission system is in linkage connection with the first sun gear and the second sun gear respectively.
Preferably, the first power output device is connected to the first carrier; the second power output device is connected with the second planet carrier.
Preferably, the reversing device is connected to the first sun gear or the second sun gear.
Preferably, the transmission mechanism of the crawler-type implement further comprises a first transmission device and a second transmission device, wherein one side of the first transmission device is connected with the first hydrostatic transmission system, and the other side of the first transmission device is connected with the first planetary transmission mechanism and the second planetary transmission mechanism; one side of the second transmission device is connected with the second hydrostatic transmission system, and the other side of the second transmission device is connected with the first planetary transmission mechanism and the second planetary transmission mechanism.
Preferably, the first transmission device and the second transmission device are both transmission chains.
Preferably, the number of the first planet wheels and the number of the second planet wheels are 3-4, and the number of the first planet wheels and the number of the second planet wheels are the same.
Preferably, the number of teeth of the first planet wheel and the second planet wheel is 19, the number of teeth of the first sun wheel and the second sun wheel is 20, and the number of teeth of the first inner gear ring and the second inner gear ring is 58.
The technical scheme provided by the embodiment of the invention can have the following beneficial effects:
the invention provides a transmission mechanism of a crawler-type machine tool, which comprises: a power input device; a first hydrostatic transmission system and a second hydrostatic transmission system connected with the power input device; a first planetary drive in driving connection with the first hydrostatic drive system and the second hydrostatic drive system, respectively; a second planetary transmission in driving connection with the first hydrostatic transmission system and the second hydrostatic transmission system, respectively; the first power output device is connected with the first planetary transmission mechanism, and the second power output device is connected with the second planetary transmission mechanism; and the reversing device is connected with the first planetary transmission mechanism or the second planetary transmission mechanism.
According to the transmission mechanism of the crawler-type machine tool, the prime power is bidirectionally input through the first hydrostatic transmission system and the second hydrostatic transmission system, namely the first hydrostatic transmission system respectively inputs power into the first planetary transmission mechanism and the second planetary transmission mechanism on two sides of the crawler-type machine tool, and meanwhile, the second hydrostatic transmission system also respectively inputs power into the first planetary transmission mechanism and the second planetary transmission mechanism on two sides of the crawler-type machine tool, so that the first planetary transmission mechanism and the second planetary transmission mechanism both receive the power transmitted by the two power sources of the first hydrostatic transmission system and the second hydrostatic transmission system. Through the synthetic action of the first planetary transmission mechanism and the second planetary transmission mechanism on the motion, the power is directly output through the first power output device and the second power output device, the power is synthesized in the same direction to accelerate the motion or is synthesized in the opposite direction to decelerate the motion through the reversing device, and therefore the driving running, the trimming steering, the differential steering and the center steering of the crawler-type machine tool are achieved. The gear transmission mechanism has the advantages of reliable transmission motion and constant instantaneous transmission ratio, namely, when the power input from two sides is the same, the output power is also the same, and the safe and reliable running and steering of the crawler-type machine tool are ensured. Therefore, the invention does not need to control the power output quantity of the two sides of the crawler-type machine tool by means of high-precision and expensive equipment, and greatly saves the manufacturing cost and the maintenance cost of the crawler-type machine tool transmission mechanism. Meanwhile, the efficiency of mechanical transmission can generally reach more than 90%, so that the transmission efficiency is effectively improved, and the loss and waste of energy are avoided. Therefore, the transmission mechanism of the crawler-type machine tool can solve the problems of high cost and low efficiency of the transmission mechanism in the prior art.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the invention, as claimed.
Drawings
FIG. 1 is a schematic illustration of a drive mechanism of a track-type implement provided in an embodiment of the present disclosure;
FIG. 2 is a schematic illustration of the construction of another drive mechanism of a track-type implement provided in an embodiment of the present disclosure;
the diagram shows:
1-a power input device, 2-a first hydrostatic transmission system, 3-a second hydrostatic transmission system, 4-a first planetary transmission mechanism, 41-a first ring gear, 42-a first sun gear, 43-a first planet carrier, 44-a first planet gear, 5-a second planetary transmission mechanism, 51-a second ring gear, 52-a second sun gear, 53-a second planet carrier, 54-a second planet gear, 6-a first power output device, 7-a second power output device, 8-a reversing device, 9-a first transmission device, 10-a second transmission device.
Detailed Description
Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present invention. Rather, they are merely examples of apparatus consistent with certain aspects of the invention, as detailed in the appended claims.
The embodiments in the present specification are described in a progressive manner, and the same and similar parts among the embodiments are referred to each other, and each embodiment focuses on the differences from the other embodiments.
Referring to fig. 1, a schematic structural diagram of a transmission mechanism of a crawler-type implement according to an embodiment of the present invention is shown.
As can be seen in fig. 1, the present disclosure provides a drive mechanism for a track-type implement, the drive mechanism comprising: the power input device 1, a first hydrostatic transmission system 2 and a second hydrostatic transmission system 3 connected with the power input device 1, a first planetary transmission mechanism 4 in transmission connection with the first hydrostatic transmission system 2 and the second hydrostatic transmission system 3, a second planetary transmission mechanism 5 in transmission connection with the first hydrostatic transmission system 2 and the second hydrostatic transmission system 3, a first power output device 6 connected with the first planetary transmission mechanism 4 and a second power output device 7 connected with the second planetary transmission mechanism 5, and a reversing device 8 connected with the first planetary transmission mechanism 4 or the second planetary transmission mechanism 5. The power input device 1 transmits power to a first hydrostatic transmission system 2 and a second hydrostatic transmission system 3, the first hydrostatic transmission system 2 averagely transmits the received power to a first planetary transmission mechanism 4 and a second planetary transmission mechanism 5, and similarly, the second hydrostatic transmission system 3 also averagely transmits the received power to the first planetary transmission mechanism 4 and the second planetary transmission mechanism 5, so that bidirectional input of the first planetary transmission mechanism 4 and the second planetary transmission mechanism 5 is realized, namely, the first planetary transmission mechanism 4 simultaneously receives power provided by the first hydrostatic transmission system 2 and the second hydrostatic transmission system 3, and similarly, the second planetary transmission mechanism 5 also simultaneously receives power provided by the first hydrostatic transmission system 2 and the second hydrostatic transmission system 3. Finally, the first planetary transmission mechanism 4 and the second planetary transmission mechanism 5 combine power under the cooperation of the steering device 8 and output the combined power through the first power output device 6 and the second power output device 7 respectively.
The working principle of the invention is as follows:
the crawler-type machine tool mainly comprises crawler-type tractors, crawler-type excavators, carrying tankers and other machine tools with crawler belts, the power input device 1 provided by the invention is used as a power support of a transmission mechanism of the crawler-type machine tool, provides motive power for the transmission mechanism to realize driving running and steering running, and is a power source of the whole crawler-type machine tool. In general, the power input device 1 may be an engine, or may be a device that can supply power, such as a motor. The power input device 1 transmits power to the first hydrostatic transmission system 2 and the second hydrostatic transmission system 3 on average, the first hydrostatic transmission system 2 and the second hydrostatic transmission system 3 bidirectionally input the received equal power to the first planetary transmission mechanism 4 and the second planetary transmission mechanism 5, and through the resultant action of the first planetary transmission mechanism 4 and the second planetary transmission mechanism 5 on the motion, namely, the power is accelerated by the double-power same-direction synthetic action or decelerated by the double-power reverse synthetic action of the reversing device 8, finally the power is respectively output by the first power output device 6 connected with the first planetary transmission mechanism 4 and the second power output device 7 connected with the second planetary transmission mechanism 5, therefore, the driving running of the crawler-type machine tool and three steering modes of edge cutting steering, differential steering and center steering are realized. When the crawler-type machine tool turns, the power synthesis effect of the first planetary transmission mechanism 4 and the second planetary transmission mechanism 5 can realize that the two sides of the crawler have the same-direction output with different speed differences or the reverse output with the same transmission ratio when the crawler-type machine tool stops or moves, so that the turning motion of the crawler-type machine tool is completed.
It should be noted that, when the crawler-type implement is driven to travel in a straight line, the second hydrostatic transmission system 3 may be locked without output, and the first hydrostatic transmission system 2 directly transmits the received power to the first power output device 6 and the second power output device 7 without passing through the first planetary transmission mechanism 4 and the second planetary transmission mechanism 5 to output, so that the crawler-type implement can travel in a straight line. Similarly, the first hydrostatic transmission system 2 can be locked without output, and the second hydrostatic transmission system 3 can directly transmit the received power to the first power output device 6 and the second power output device 7 for output without passing through the first planetary transmission mechanism 4 and the second planetary transmission mechanism 5, and the linear running of the crawler-type implement can also be completed.
The gear transmission mechanism has the advantages of reliable transmission motion and constant instantaneous transmission ratio, namely, when the power input from two sides is the same, the output power is also the same, and the safe and reliable running and steering of the crawler-type machine tool can be ensured. Therefore, the transmission mechanism of the crawler-type machine tool provided by the invention does not need to control the power output quantity of the two sides of the machine tool by means of high-precision and expensive equipment, and the manufacturing cost and the maintenance cost of the transmission mechanism of the crawler-type machine tool are greatly saved. Meanwhile, the efficiency of mechanical transmission can generally reach more than 90%, so that the transmission efficiency can be effectively improved, and the loss and waste of energy are avoided. Therefore, the transmission mechanism of the crawler-type machine tool can solve the problems of high cost and low efficiency of the transmission mechanism in the prior art.
It should be noted that the first planetary transmission mechanism 4 and the second planetary transmission mechanism 5 provided in the present invention may be planetary gears, or may be other transmission mechanisms that have a similar transmission principle to the planetary gears and can realize motion synthesis, such as cycloidal pin gears, harmonic gears, and gears with small tooth differences. Preferably, the first planetary gear mechanism 4 and the second planetary gear mechanism 5 provided in the present invention are both planetary gears.
Referring to fig. 2, a schematic structural diagram of a transmission mechanism of another crawler-type implement provided in an embodiment of the present invention is shown.
As can be seen from fig. 2, the first planetary gear set 4 includes a first ring gear 41, a first sun gear 42, a first carrier 43, and a first planet gear 44 disposed on the first carrier 43, and the first planet gear 44 is in meshing connection with the first ring gear 41 and the first sun gear 42 respectively; the second planetary transmission mechanism 5 comprises a second ring gear 51, a second sun gear 52, a second planet carrier 53 and a second planet gear 54 arranged on the second planet carrier 53, and the second planet gear 54 is in meshing connection with the second ring gear 51 and the second sun gear 52 respectively; wherein the first hydrostatic transmission system 2 is in linkage connection with the first ring gear 41 and the second ring gear 51; the second hydrostatic transmission system 3 is connected with the first sun gear 42 and the second sun gear 52 in a linkage manner, and the first power output device 6 is connected with the first planet carrier 43; the second power output 7 is connected with the second carrier 53. Namely, the first hydrostatic transmission system 2 averagely transmits the received power to the first ring gear 41 and the second ring gear 51, the second hydrostatic transmission system 3 averagely transmits the received power to the first sun gear 42 and the second sun gear 52, and the power is finally output through the first planet carrier 43 and the second planet carrier 53 through the resultant effect of the first planetary transmission mechanism 4 and the second planetary transmission mechanism 5 on the bidirectional movement.
In the present embodiment, the reversing device 8 is connected to the first sun gear 42 or the second sun gear 52. When the reversing device 8 is connected with the first sun gear 42, the first planetary transmission mechanism 4 performs double-power reverse synthesis through the reversing device 8 to perform deceleration movement, and the second planetary transmission mechanism 5 performs double-power same-direction synthesis to perform acceleration movement; that is, when the reversing device 8 is connected to the second sun gear 52, the second planetary gear mechanism 5 performs a dual-power reverse combination to perform a deceleration motion by the reversing device 8, and the first planetary gear mechanism 4 performs a dual-power same-direction combination to perform an acceleration motion. The reversing device 8 may be a central reversing wheel, or other devices having a reversing function, and at the same time, reversing may be realized by setting the gear meshing directions of the first planetary transmission mechanism 4 and the second planetary transmission mechanism 5 to be opposite, and setting the power transmission directions to be the same.
Specifically, when the crawler-type implement is driven linearly, i.e., when the crawler-type implement moves linearly forward or backward, the second hydrostatic transmission system 3 can be locked without output, and the first hydrostatic transmission system 2 directly transmits the received power to the first power output device 6 and the second power output device 7 without passing through the first inner gear ring 41 and the second inner gear ring 51 to output, so that the linear running of the crawler-type implement can be completed. Similarly, the first hydrostatic transmission system 2 may be locked without output, and the second hydrostatic transmission system 3 may directly transmit the received power to the first power output device 6 and the second power output device 7 without passing through the first sun gear 42 and the second sun gear 52 for output, and may also perform the linear travel of the crawler-type implement.
When the crawler-type machine carries out differential steering or trimming steering, the reversing device 8 can be connected with the first sun gear 42, and the reversing device 8 can also be connected with the second sun gear 52. If the reversing device 8 is connected with the second sun gear 52, the first hydrostatic transmission system 2 and the second hydrostatic transmission system 3 are simultaneously output, that is, the first ring gear 41 and the first sun gear 42 respectively receive the power transmitted by the first hydrostatic transmission system 2 and the second hydrostatic transmission system 3, the power is synthesized by the first planetary transmission mechanism 4 and is output by the first planet carrier 43, and finally the accelerated rotation of one side of the crawler-type machine is realized; similarly, the second ring gear 51 and the second sun gear 52 receive the power transmitted by the first hydrostatic transmission system 2 and the second hydrostatic transmission system 3, respectively, and since the second sun gear 52 is connected with the reversing device 8, the power synthesized by the second planetary transmission mechanism 5 is output by the second planet carrier 53 in a speed reduction manner. Therefore, one side of the crawler-type machine tool can rotate in an accelerating mode, the other side of the crawler-type machine tool rotates in a decelerating mode, so that the two sides of the crawler-type machine tool have certain rotating speed difference, and differential steering of the crawler-type machine tool is completed. When one side of the crawler-type machine tool is decelerated and rotated to stop, one side of the crawler-type machine tool can be accelerated and rotated, and the other side of the crawler-type machine tool stops rotating, so that the trimming steering of the crawler-type machine tool is completed. When the reversing device 8 is connected to the first sun gear 42, the transmission process of the motion is reversed, that is, the first planet carrier 43 outputs the decelerated rotation and the second planet carrier 53 outputs the accelerated rotation, and the specific transmission process is not described herein again.
When the crawler-type implement performs center turning, the reversing device 8 can be connected with the first sun gear 42, and the reversing device 8 can also be connected with the second sun gear 52. If the reversing device 8 is connected with the second sun gear 52, the first hydrostatic transmission system 2 is locked without output, the power received by the second hydrostatic transmission system 3 is averagely transmitted to the first sun gear 42 and the second sun gear 52, the power received by the first sun gear 42 and the power received by the second sun gear 52 are the same, and the second sun gear 52 is connected with the reversing device 8, so that the positive and negative rotation output of the same transmission ratio can be realized on two sides of the crawler-type machine tool, namely one side of the crawler-type machine tool rotates at a certain rotation speed, the other side of the crawler-type machine tool rotates in the reverse direction at the same rotation speed, and finally the central rotation of the crawler-type machine tool is realized. When the reversing device 8 is connected to the first sun gear 42, the specific transmission process is similar to the above process, and is not described herein again.
It should be noted that the first planetary transmission mechanism 4 and the second planetary transmission mechanism 5 provided by the present invention have the same internal structure, and have the same number of planet gears, sun gear teeth number, planet gear teeth number, and inner gear teeth number, so as to realize that the two sides of the crawler-type implement have the same transmission ratio. Preferably, the number of first planet gears 44 and second planet gears 54 is 3-4. Of course, the number of the first planet gears 44 and the second planet gears 54 is not limited to 3-4, and 3-4 planet gears are only the preferred solution of the present embodiment.
In the present embodiment, the power input ends of the first planetary gear mechanism 4 and the second planetary gear mechanism 5 are the first ring gear 41, the first sun gear 42, the second ring gear 51 and the second sun gear 52, respectively, and the output ends are the first planet carrier 43 and the second planet carrier 53, respectively. The present invention is not limited to the above power input and output modes, and may be input through the sun gear and the carrier, output through the ring gear, input through the ring gear and the carrier, and output through the sun gear. The power input and output mode provided by the embodiment utilizes the planetary gear speed reducing mechanism to synthesize the motion, and finally realizes the transmission of the crawler-type machine tool. The planetary gear speed reducing mechanism can effectively control the transmission speed of the crawler-type machine tool, so that the motive power is slowly and stably output after being reduced, the safe running of the crawler-type machine tool is ensured, the power input and output mode provided by the embodiment is most economical and effective, and the manufacturing cost is lower. Of course, if the motive power acceleration output occurs in other input and output modes, the deceleration ratio can be increased through the front-mounted transmission chain, but the processing mode increases the manufacturing cost and the failure rate of equipment.
The transmission mechanism of the crawler-type implement provided by the embodiment further comprises a first transmission device 9 and a second transmission device 10, wherein one side of the first transmission device 9 is connected with the first hydrostatic transmission system 2, and the other side of the first transmission device 9 is connected with the first planetary transmission mechanism 4 and the second planetary transmission mechanism 5; the second transmission 10 is connected on one side to the second hydrostatic transmission 3 and on the other side to the first planetary gear 4 and the second planetary gear 5. Namely, the first hydrostatic transmission system 2 is in linkage connection with the first planetary transmission mechanism 4 and the second planetary transmission mechanism 5 through a first transmission device 9, and the second hydrostatic transmission system 3 is in linkage connection with the first planetary transmission mechanism 4 and the second planetary transmission mechanism 5 through a second transmission device 10. Preferably, the first transmission device 9 and the second transmission device 10 are both transmission chains in the present embodiment. Of course, the first transmission device 9 and the second transmission device 10 may be belts or other devices capable of realizing transmission.
In the present embodiment, the number of teeth of the first planetary gear 44 and the second planetary gear 54 is 19, the number of teeth of the first sun gear 43 and the second sun gear 52 is 20, and the number of teeth of the first ring gear 41 and the second ring gear 51 is 58.
The number of teeth of the first planet gear 44, the second planet gear 54, the first sun gear 43, the second sun gear 52, the first ring gear 41 and the second ring gear 51 provided by the invention is not limited to the above combination, and other combination modes can be realized, for example, the number of teeth of the first planet gear 44 and the second planet gear 54 is 25, the number of teeth of the first sun gear 43 and the second sun gear 52 is 26, and the number of teeth of the first ring gear 41 and the second ring gear 51 is 76; the number of teeth of the first and second planetary gears 44 and 54 is 35, the number of teeth of the first and second sun gears 43 and 52 is 19, the number of teeth of the first and second ring gears 41 and 51 is 89, and so on.
The first power output device 6 and the second power output device 7 provided in the present embodiment are the first drive wheel and the second drive wheel, but may be other reasonable devices capable of outputting power.
It should be noted that the transmission mechanism provided by the invention is not limited to the crawler-type machine, and can also be used as a transmission mechanism of other machines which need to be driven and steered, such as cars, buses, transport vehicles and the like.
The above-described embodiments of the present invention do not limit the scope of the present invention. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
It is noted that, in this document, relational terms such as "first" and "second," and the like, may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The foregoing are merely exemplary embodiments of the present invention, which enable those skilled in the art to understand or practice the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (8)
1. A drive mechanism for a tracked implement, the drive mechanism comprising:
a power input device (1);
a first hydrostatic transmission system (2) and a second hydrostatic transmission system (3) connected with the power input device (1);
a first planetary transmission mechanism (4) in transmission connection with the first hydrostatic transmission system (2) and the second hydrostatic transmission system (3) respectively; a second planetary transmission (5) which is in transmission connection with the first hydrostatic transmission system (2) and the second hydrostatic transmission system (3) respectively;
a first power output device (6) connected with the first planetary transmission mechanism (4) and a second power output device (7) connected with the second planetary transmission mechanism (5); and the number of the first and second groups,
a reversing device (8) connected to the first planetary gear (4) or the second planetary gear (5).
2. The drive mechanism of a tracked implement according to claim 1,
the first planetary transmission mechanism (4) comprises a first inner gear ring (41), a first sun gear (42), a first planet carrier (43) and a first planet gear (44) arranged on the first planet carrier (43), and the first planet gear (44) is respectively meshed with the first inner gear ring (41) and the first sun gear (42);
the second planetary transmission mechanism (5) comprises a second inner gear ring (51), a second sun gear (52), a second planet carrier (53) and a second planet gear (54) arranged on the second planet carrier (53), and the second planet gear (54) is respectively in meshed connection with the second inner gear ring (51) and the second sun gear (52); wherein,
the first hydrostatic transmission system (2) is in linkage connection with the first ring gear (41) and the second ring gear (51) respectively;
the second hydrostatic transmission system (3) is in linkage connection with the first sun gear (42) and the second sun gear (52), respectively.
3. The transmission of a crawler-type implement according to claim 2, characterised in that the first power take-off (6) is connected with the first carrier (43); the second power output device (7) is connected with the second planet carrier (53).
4. The drive of a crawler-type implement according to claim 2, characterized in that the reversing device (8) is connected to the first sun wheel (42) or the second sun wheel (52).
5. The drive mechanism of a tracked implement according to claim 1, further comprising a first drive (9) and a second drive (10), wherein,
one side of the first transmission device (9) is connected with the first hydrostatic transmission system (2), and the other side of the first transmission device is connected with the first planetary transmission mechanism (4) and the second planetary transmission mechanism (5);
one side of the second transmission device (10) is connected with the second hydrostatic transmission system (3), and the other side is connected with the first planetary transmission mechanism (4) and the second planetary transmission mechanism (5).
6. The drive mechanism of a crawler-type implement according to claim 5, characterized in that the first drive (9) and the second drive (10) are each a drive chain.
7. The drive of a track-type implement according to claim 2, characterized in that the number of the first planet wheels (44) and the second planet wheels (54) is 3-4, and the number of the first planet wheels (44) and the second planet wheels (54) is the same.
8. A drive mechanism of a crawler-type implement according to claim 2, wherein the number of teeth of the first planet wheel (44) and the second planet wheel (54) is 19, the number of teeth of the first sun wheel (43) and the second sun wheel (52) is 20, and the number of teeth of the first ring gear (41) and the second ring gear (51) is 58.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510367378.XA CN104964019B (en) | 2015-06-29 | 2015-06-29 | The transmission rig of a kind of track type facility |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510367378.XA CN104964019B (en) | 2015-06-29 | 2015-06-29 | The transmission rig of a kind of track type facility |
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| CN104964019A true CN104964019A (en) | 2015-10-07 |
| CN104964019B CN104964019B (en) | 2016-06-08 |
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Cited By (1)
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| CN111284557A (en) * | 2020-03-20 | 2020-06-16 | 雷沃重工股份有限公司 | Vehicle pivot steering device and method and vehicle |
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| CN104964019B (en) | 2016-06-08 |
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Denomination of invention: A transmission mechanism of crawler implements Effective date of registration: 20230302 Granted publication date: 20160608 Pledgee: China Construction Bank Corporation Shuangfeng Sub-branch Pledgor: HUNAN NONGYOU MACHINERY GROUP Co.,Ltd.|HUNAN NONGYOU SHENGTAI AGRICULTURAL TECHNOLOGY CO.,LTD. Registration number: Y2023980033958 |
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