Belt input ten-gear manual transmission capable of being additionally provided with power takeoff

Abstract

The utility model relates to the technical field of gearboxes, in particular to a belt input ten-gear manual gearbox capable of being additionally provided with a power takeoff. The power takeoff device comprises an auxiliary box, a main box and a power takeoff assembly, the auxiliary box comprises an auxiliary box shell, an auxiliary box input shaft, an auxiliary box intermediate shaft and an auxiliary box output shaft, and the auxiliary box input shaft, the auxiliary box intermediate shaft and the auxiliary box output shaft are arranged in the auxiliary box shell; the main box comprises a front shell, a rear shell and a rear cover, a main box intermediate shaft and a main box gear shifting mechanism are arranged in the front shell, a main box synchronizer is arranged in the rear shell, and a main box output shaft is arranged in the rear cover; the power takeoff assembly is located on the side portion of the front shell and meshed with the gear of the main box intermediate shaft through a power takeoff gear. The structure of the auxiliary box is improved, the auxiliary box is connected with the engine through the belt, the output shaft of the auxiliary box serves as the input shaft of the main box to conduct power transmission, the power takeoff assembly is connected to the middle shaft of the main box, and power of the main box is reasonably distributed on the basis that the main box achieves the ten-gear function.

Description

TECHNICAL FIELD

[0001] The utility model relates to gearbox technical field, concretely relates to a ten gear manual gearbox of belt input can add power takeoff. BACKGROUND

[0002] Manual gearbox designs are diverse, but in the pursuit of high gear and additional power output applications, traditional gearboxes often face the problems of complex structure and limited power transmission efficiency. For example, Chinese patent CN218343260U discloses a main and auxiliary power assembly, which controls gear shifting by combining a sleeve between the main box and the auxiliary box, and each gear corresponds to a pair of gear shifting gear pairs, simplifying the gear shifting mechanism. However, when a power takeoff is added to adapt to specific working conditions, how to balance the compactness of the gearbox and the rationality of power distribution becomes a technical challenge that needs to be overcome. The existing scheme meets the gear shifting requirement, but there is still room for optimization in the integration of the power takeoff and the effective management of the power flow. SUMMARY

[0003] The technical problem to be solved by the utility model is to overcome the shortcomings of the prior art and provide a ten gear manual gearbox with belt input and power takeoff.

[0004] The technical scheme adopted by the utility model is as follows:

[0005] A ten gear manual gearbox with belt input and power takeoff, comprising an auxiliary box and a main box, and a power takeoff assembly, wherein:

[0006] The auxiliary box comprises an auxiliary box housing, an auxiliary box input shaft, an auxiliary box intermediate shaft and an auxiliary box output shaft arranged in the auxiliary box housing, and:

[0007] The auxiliary box input shaft is connected to the clutch and the engine through a belt pulley, and is used to transmit the torque of the engine to the auxiliary box intermediate shaft;

[0008] The auxiliary box intermediate shaft is meshed with the auxiliary box input shaft through a set of bevel gears, and one side of the auxiliary box intermediate shaft is provided with an auxiliary box gear shifting mechanism. The auxiliary box gear shifting mechanism selects high / low gear and locks the auxiliary box input shaft through a control yoke;

[0009] The auxiliary box output shaft is connected to the auxiliary box intermediate shaft through the auxiliary box gear shifting mechanism, and is used to transmit the power of the auxiliary box intermediate shaft to the main box intermediate shaft;

[0010] The main box comprises a front housing, a rear housing and a rear cover. The main box intermediate shaft and the main box gear shifting mechanism are arranged in the front housing. The main box synchronizer is arranged in the rear housing. The main box output shaft is arranged in the rear cover, and:

[0011] The main box intermediate shaft is meshed with the auxiliary box output shaft through a set of always-engaged gears;

[0012] The main box shifting mechanism is controlled by a shifting handle in the cab to control a rocker arm to drive the main box synchronizer on the main box output shaft to shift gears, so as to lock the gear of the specified gear with the shaft, and then output the torque transmitted from the passive gear of the main box intermediate shaft to the transmission shaft of the vehicle;

[0013] The power take-off assembly is located on the side of the front housing and meshes with the gear of the main box intermediate shaft through the power take-off gear.

[0014] The technical scheme improves the structure of the auxiliary box, connects the engine with the auxiliary box through a belt, and transmits power through the auxiliary box output shaft as the main box input shaft, connects the power take-off assembly on the main box intermediate shaft, and reasonably distributes the power of the main box on the basis of realizing the ten-gear function of the main box. Specifically, the engine torque is transmitted to the auxiliary box input shaft through the belt, the auxiliary box input shaft and the auxiliary box intermediate shaft are meshed with each other through bevel gears, and the power is transmitted at 90 degrees; the high gear / low gear is selected by the operating fork to lock the auxiliary box input shaft, so as to switch the power transmission path; the auxiliary box output shaft simultaneously serves as the input shaft of the main box and transmits torque to the main box intermediate shaft through the meshing with the intermediate shaft constant gear; the main box shifting mechanism is controlled by a shifting handle in the cab to control a rocker arm to drive the main box synchronizer on the main box output shaft to shift gears; the main box output shaft locks the gear of the specified gear with the shaft, and outputs the torque transmitted from the passive gear of the main box intermediate shaft to the transmission shaft of the vehicle; the power take-off assembly obtains power from the main box intermediate shaft to drive additional equipment such as a hydraulic pump and a generator without interfering with the power transmission of the main box.

[0015] In addition, the ten-gear manual gearbox with the belt input and the power take-off assembly can have the following additional technical features according to the above-mentioned technical scheme of the utility model:

[0016] According to an embodiment of the utility model, the auxiliary box and the main box constitute a four-section housing, the center distance of the auxiliary box is 76mm, and the center distance of the main box is 85mm.

[0017] In the technical scheme, the 85mm of the main box is a larger center distance for bearing larger torque and load; the 76mm of the auxiliary box is a smaller center distance for reducing weight, reducing manufacturing cost or adapting to specific space layout. The overall four-section housing is used to optimize the strength and transmission efficiency of different transmission parts.

[0018] According to an embodiment of the utility model, the main box is provided with five forward gears and five reverse gears, can bear a maximum input torque of 240-280N·m, and has a total of ten gears.

[0019] The technical scheme sets five forward gears and five reverse gears, so that the gearbox has a wide transmission ratio range, is used for keeping the optimal engine operating point of the vehicle under different speed and load conditions, and adapts to different roads and driving conditions.

[0020] According to one embodiment of the utility model, the power takeoff assembly is engaged with the second gear of the main gearbox intermediate shaft.

[0021] In the technical scheme, the second gear is usually located in the transmission ratio range from low speed to medium speed, can provide sufficient torque output to meet the power requirement of additional equipment, and avoids efficiency loss caused by operation at too high or too low speed; the power takeoff can efficiently obtain power in the transmission system by being engaged with the second gear of the main gearbox intermediate shaft.

[0022] According to one embodiment of the utility model, the clutch is connected with the clutch pedal, and the clutch is controlled to be separated or contacted through the clutch pedal.

[0023] In the technical scheme, when the clutch is in the contacted state, the power of the engine can be smoothly transmitted to the auxiliary gearbox to drive the vehicle to move forward or backward; and when the clutch is in the separated state, the power transmission between the engine and the auxiliary gearbox is cut off, so that the vehicle can be shifted or parked without being turned off.

[0024] According to one embodiment of the utility model, the surfaces of the bevel gear and the always-engaged gear set are covered with a carburized strengthening layer.

[0025] In the technical scheme, the carbon element is infiltrated into the surface layer of the steel material by covering the surface with a carburized strengthening layer, and then the surface layer is subjected to quenching treatment, so that the carbon content of the surface layer is increased, thereby improving the hardness and wear resistance of the surface layer.

[0026] Compared with the prior art, the utility model has the following beneficial effects:

[0027] By improving the structure of the auxiliary gearbox, the belt is connected with the engine, the power is transmitted by using the auxiliary gearbox output shaft as the main gearbox input shaft, the power takeoff assembly is connected on the main gearbox intermediate shaft, and the power of the main gearbox is reasonably distributed on the basis of realizing ten gears in the main gearbox. BRIEF DESCRIPTION OF DRAWINGS

[0028] Figure 1 is the front view of the utility model.

[0029] Figure 2 is one of the sectional views of the utility model.

[0030] Figure 3 is the second sectional view of the utility model.

[0031] Figure 4 This is a side view of the present invention.

[0032] In the diagram: 1. Auxiliary gearbox housing; 11. Auxiliary gearbox intermediate shaft; 12. Auxiliary gearbox output shaft; 13. Auxiliary gearbox input shaft; 2. Front housing; 21. Main gearbox intermediate shaft; 22. Main gearbox shifting mechanism; 3. Rear housing; 31. Main gearbox synchronizer; 4. Rear cover; 41. Main gearbox output shaft; 5. Power take-off assembly. Detailed Implementation

[0033] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0034] Example 1

[0035] like Figures 1 to 4 As shown, this embodiment provides a belt-input equipotentially-equipped ten-speed manual transmission, including an auxiliary gearbox and a main gearbox, and a power take-off assembly 5, wherein:

[0036] The auxiliary housing includes an auxiliary housing shell 1, and an auxiliary housing input shaft 13, an auxiliary housing intermediate shaft 11, and an auxiliary housing output shaft 12 disposed within the auxiliary housing shell 1. Then:

[0037] The auxiliary gearbox input shaft 13 connects the clutch to the engine via a pulley, and is used to transmit the engine's torque to the auxiliary gearbox intermediate shaft 11;

[0038] The intermediate shaft 11 of the auxiliary gearbox meshes with the input shaft 13 of the auxiliary gearbox through a set of bevel gears. A gearbox shifting mechanism is provided on one side of the auxiliary gearbox. The gearbox shifting mechanism selects high / low gear by operating the shift fork and locks with the input shaft 13 of the auxiliary gearbox.

[0039] The auxiliary gearbox output shaft 12 is connected to the auxiliary gearbox intermediate shaft 11 through the auxiliary gearbox shifting mechanism, and is used to transmit the power of the auxiliary gearbox intermediate shaft 11 to the main gearbox intermediate shaft 21.

[0040] The main housing includes a front housing 2, a rear housing 3, and a rear cover 4. The front housing 2 houses the main housing intermediate shaft 21 and the main housing shifting mechanism 22. The rear housing 3 houses the main housing synchronizer 31. The rear cover 4 houses the main housing output shaft 41. Therefore:

[0041] The intermediate shaft 21 of the main gearbox meshes with the output shaft 12 of the auxiliary gearbox via a constant-grid gear set.

[0042] The main box shifting mechanism 22 is controlled by a shifting handle in the cab to control a rocker arm to drive the main box synchronizer 31 on the main box output shaft 41 to shift gears, so as to lock the gear of the specified gear position with the shaft, and then output the torque transmitted from the passive gear of the main box intermediate shaft 21 to the transmission shaft of the vehicle.

[0043] The power take-off assembly 5 is located at the side of the front housing 2 and meshes with the gear of the main box intermediate shaft 21 through the power take-off gear.

[0044] As shown in the figure, Figures 1 to 4 The technical scheme improves the structure of the auxiliary box, connects the auxiliary box with the engine through a belt, and transmits power through the auxiliary box output shaft 12 as the input shaft of the main box. The power take-off assembly 5 is connected to the main box intermediate shaft 21. On the basis of realizing the ten-gear function of the main box, the power of the main box is reasonably distributed. Specifically, the engine torque is transmitted to the auxiliary box input shaft 13 through the belt, the auxiliary box input shaft 13 and the auxiliary box intermediate shaft 11 are meshed with each other through bevel gears, and the power is transmitted at an angle of 90 degrees. The high gear / low gear is selected by operating the shift fork to lock the auxiliary box input shaft 13, so as to switch the power transmission path. The auxiliary box output shaft 12 is used as the input shaft of the main box and transmits torque to the main box intermediate shaft 21 through the meshing of the intermediate shaft constant gear. The main box shifting mechanism 22 is controlled by a shifting handle in the cab to control a rocker arm to drive the main box synchronizer 31 on the main box output shaft 41 to shift gears. The main box output shaft 41 locks the gear of the specified gear position with the shaft, and then outputs the torque transmitted from the passive gear of the main box intermediate shaft 21 to the transmission shaft of the vehicle. The power take-off assembly 5 obtains power from the main box intermediate shaft 21 to drive additional equipment such as a hydraulic pump and a generator without interfering with the power transmission of the main box.

[0045] In addition, the ten-gear manual transmission with a belt input and a power take-off assembly according to the above-mentioned technical scheme of the present application can have the following additional technical features:

[0046] According to an embodiment of the present application, the auxiliary box and the main box form a four-section housing, the center distance of the auxiliary box is 76 mm, and the center distance of the main box is 85 mm.

[0047] In the technical scheme, the 85 mm of the main box is a larger center distance for bearing larger torque and load; the 76 mm of the auxiliary box is a smaller center distance for reducing weight, reducing manufacturing cost or adapting to a specific space layout. The overall four-section housing is used to optimize the strength and transmission efficiency of different transmission parts.

[0048] According to an embodiment of the present application, the main box is provided with five forward gears and five reverse gears, and can bear a maximum input torque of 240-280 N•m, and a total of ten gears.

[0049] This technical solution features five forward gears and five reverse gears, giving the transmission a wide range of gear ratios. This allows the engine to maintain its optimal operating point under varying speeds and loads, adapting to different road and driving conditions. The main gearbox can withstand a maximum input torque between 240 and 280 N•m, ensuring reliable power transmission.

[0050] According to one embodiment of the present invention, the power take-off assembly 5 meshes with the second gear of the intermediate shaft 21 of the main gearbox.

[0051] In this technical solution, the second gear is usually located in the low to medium speed transmission ratio range, which can provide sufficient torque output to meet the power requirements of the auxiliary equipment, while avoiding efficiency loss caused by operating at too high or too low speeds; by meshing with the second gear of the intermediate shaft 21 of the main gearbox, the power take-off can efficiently obtain power from the transmission system.

[0052] According to one embodiment of the present invention, the clutch is connected to the clutch pedal, and the clutch disengagement and engagement are controlled by the clutch pedal.

[0053] In this technical solution, when the clutch is engaged, the engine's power can be smoothly transmitted to the auxiliary gearbox, driving the vehicle forward or backward; while when the clutch is disengaged, the power transmission between the engine and the auxiliary gearbox is cut off, allowing the vehicle to shift gears or stop without turning off the engine.

[0054] According to one embodiment of the present invention, the surfaces of the bevel gear and the constant-grid gear set are both covered with a carburized reinforcement layer.

[0055] In this technical solution, carbon elements are diffused into the surface layer of the steel material by covering it with a carburizing reinforcement layer, and then the surface layer is quenched to increase the carbon content, thereby improving its hardness and wear resistance.

[0056] The usage process of the above embodiments is as follows:

[0057] like Figures 1 to 4 As shown, during operation, the engine torque is first transmitted to the auxiliary gearbox input shaft 13 via a belt. The auxiliary gearbox input shaft 13 and the auxiliary gearbox intermediate shaft 11 mesh with each other through bevel gears to achieve a 90-degree steering transmission of power. The auxiliary gearbox shifting mechanism selects a high or low gear and locks with the auxiliary gearbox input shaft 13 by operating the shift fork, thereby switching the power transmission path. At this time, the auxiliary gearbox output shaft 12 (which also serves as the main gearbox input shaft) meshes with the main gearbox intermediate shaft 21 through a constant-mesh gear set to transmit torque to the main gearbox. Inside the main gearbox, the shifting mechanism controls the rocker arm through the shift lever in the cab, driving the synchronizer on the main gearbox output shaft 41 to shift gears. During this process, the gear of the specified gear is locked with the shaft, and the torque transmitted from the driven gear of the main gearbox intermediate shaft 21 is output to the vehicle's drive shaft.

[0058] In addition, the power take-off assembly 5 is located at the side of the main box front shell 2, and power is obtained from the main box intermediate shaft 21 through meshing of the power take-off gear with the high gear tooth or the reverse gear tooth of the main box intermediate shaft 21 to drive additional equipment such as a hydraulic pump, a generator and the like, and the process does not interfere with power transmission of the main box.

[0059] Overall, the utility model realizes efficient power transmission and ten-gear function by optimizing the structure of the auxiliary box and the main box, simultaneously meets the demand of the best engine working point of the vehicle under different speed and load conditions, and improves the hardness and wear resistance of the key gears through the carburizing strengthening layer.

[0060] Although the utility model has been described in detail by referring to the preferred embodiments and the accompanying drawings, the utility model is not limited thereto. Any modification or replacement of the embodiments of the utility model made by those skilled in the art without departing from the spirit and essence of the utility model shall be within the scope of the utility model. Any person skilled in the art can easily think of changes or replacements within the technical range disclosed by the utility model, and all the changes or replacements shall be within the protection scope of the utility model. Therefore, the protection scope of the utility model shall be subject to the protection scope of the claims.

Claims

1. A ten-speed manual transmission with belt input and power take-off (PTO), characterized in that, Including the auxiliary gearbox and the main gearbox, as well as the power take-off assembly (5), wherein: The auxiliary housing includes an auxiliary housing shell (1), and an auxiliary housing input shaft (13), an auxiliary housing intermediate shaft (11), and an auxiliary housing output shaft (12) disposed within the auxiliary housing shell (1). Then: The auxiliary gearbox input shaft (13) connects the clutch to the engine via a pulley and is used to transmit the engine torque to the auxiliary gearbox intermediate shaft (11). The intermediate shaft (11) of the auxiliary gearbox meshes with the input shaft (13) of the auxiliary gearbox through a set of bevel gears. A gearbox shifting mechanism is provided on one side of the auxiliary gearbox. The gearbox shifting mechanism selects high / low gear and locks with the input shaft (13) of the auxiliary gearbox by operating the shift fork. The auxiliary gearbox output shaft (12) is connected to the auxiliary gearbox intermediate shaft (11) through the auxiliary gearbox shifting mechanism, and is used to transmit the power of the auxiliary gearbox intermediate shaft (11) to the main gearbox intermediate shaft (21). The main housing includes a front housing (2), a rear housing (3), and a rear cover (4). The front housing (2) contains a main housing intermediate shaft (21) and a main housing shifting mechanism (22). The rear housing (3) contains a main housing synchronizer (31). The rear cover (4) contains a main housing output shaft (41). Therefore: The intermediate shaft (21) of the main gearbox meshes with the output shaft (12) of the auxiliary gearbox through a constant gear set; The main gear shifting mechanism (22) controls the rocker arm via the shift lever in the cab to drive the main gear synchronizer (31) on the main gear output shaft (41) to shift gears. It is used to lock the gear and shaft of the specified gear, and then output the torque transmitted from the driven gear of the main gear intermediate shaft (21) to the vehicle's drive shaft. The power take-off assembly (5) is located on the side of the front housing (2) and meshes with the gear of the intermediate shaft (21) of the main housing via the power take-off gear.

2. The belt-input, power-take-off (PTO) 10-speed manual transmission as described in claim 1, characterized in that, The auxiliary box and the main box form a four-section shell, with the center distance between the auxiliary boxes being 76mm and the center distance between the main boxes being 85mm.

3. The belt-input, power-take-off (PTO) 10-speed manual transmission as described in claim 1, characterized in that... The main gearbox is equipped with five forward gears, five reverse gears, and can withstand a maximum input torque of 240~280 N•m, for a total of ten gears.

4. The belt-input, power-take-off (PTO) 10-speed manual transmission as described in claim 1, characterized in that, The power take-off assembly (5) meshes with the second gear of the intermediate shaft (21) of the main gearbox.

5. The belt-input, power-take-off (PTO) 10-speed manual transmission as described in claim 1, characterized in that... The clutch is connected to the clutch pedal, and the clutch disengagement and engagement are controlled by the clutch pedal.

6. The belt-input, power-take-off (PTO) 10-speed manual transmission as described in claim 1, characterized in that, The surfaces of the bevel gears and the constant-grid gear set are all covered with a carburized reinforcement layer.

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