Power take-off device

Abstract

A power take-off device comprises a shell and an input gear arranged in the shell, one end of the input gear is coaxially and fixedly provided with a second shock absorber coaxially connected with an engine flywheel, the other end of the input gear is sequentially, coaxially and fixedly provided with a transition flywheel and a clutch, and the clutch is internally and coaxially provided with a first shock absorber coaxially connected with a transmission input shaft; the intermediate shaft is arranged in the shell, the intermediate gear is coaxially and fixedly arranged on the periphery of the middle section of the intermediate shaft, the intermediate gear is meshed with the input gear, and the axis is parallel to that of the input gear; the output shaft is arranged in the shell, the output gear is coaxially and fixedly arranged on the periphery of the middle section of the output shaft, one end of the output shaft extends towards the outer side of the shell, and the output gear is meshed with the middle gear and is parallel to the middle gear in axis. By means of reasonable arrangement of component structures, two power transmission routes are arranged on the whole, dynamic clutch control is adopted, impact and vibration are greatly reduced, the application range is wide, meanwhile, an input gear is arranged between an engine flywheel and a clutch, and power take-off can be achieved in the static or running state of a vehicle.

Description

Technical Field

[0001] The utility model belongs to the technical field of power take-offs, and in particular relates to a power take-off device. Background Art

[0002] In recent years, special-purpose vehicle manufacturers have entered a period of rapid development, and the demand for power take-offs has become increasingly strong. In particular, the market demand for fire trucks has shown steady growth, with demand continuing to increase, and the demand for related power take-off products has also increased year by year.

[0003] Fire trucks often use power take-offs (PTOs) for firefighting operations. Existing PTOs can only be used with conventional manual transmissions and are not suitable for use with barrel-type, three-speed S-type transmissions, integrated automatic manual transmissions (AMTs), and automatic transmissions. Furthermore, existing PTOs experience significant shock and vibration during power output, impacting overall system stability. Summary of the Invention

[0004] In view of the above problems, the purpose of the present invention is to provide a power take-off device to solve the problems of limited applicable working conditions of the power take-off and shock and vibration of power output.

[0005] To achieve the above-mentioned purpose, the technical solutions adopted by the present invention include:

[0006] A power take-off device comprises a housing and an input gear arranged in the housing, wherein a second shock absorber coaxially connected to the engine flywheel is fixedly mounted on one end of the input gear, a transition flywheel and a clutch are fixedly mounted on the other end of the input gear in sequence, and a first shock absorber coaxially connected to the transmission input shaft is coaxially mounted in the clutch; the device also comprises an intermediate shaft arranged in the housing and an intermediate gear coaxially fixed to the outer periphery of the middle section of the intermediate shaft, the intermediate gear meshing with the input gear with their axes parallel to each other; the device also comprises an output shaft arranged in the housing and an output gear coaxially fixed to the outer periphery of the middle section of the output shaft, the output shaft one end extending outward from the housing, the output gear meshing with the intermediate gear with their axes parallel to each other.

[0007] Preferably, an output clutch plate connected to one end of the output gear is coaxially fixed on the outer periphery of the middle section of the output shaft.

[0008] Preferably, it also includes a gear pump, a filter, an oil pipe and a nozzle. The gear pump is arranged at the bottom of the shell and is connected to the input gear power. The filter is arranged at the upper part of the shell. One end of the oil pipe is connected to the output end of the gear pump, and the other end of the oil pipe is connected to the input end of the filter. The nozzle is located on the upper inner wall of the shell and is connected to the output end of the filter.

[0009] Preferably, one end of the output shaft is coaxially connected to an output flange.

[0010] Preferably, a first bearing is coaxially connected between the intermediate shaft and the housing.

[0011] Preferably, a second bearing is coaxially connected between the output shaft and the housing.

[0012] Compared with the prior art, the advantages of the present invention are:

[0013] (1) The utility model provides a power take-off device, which has two power transmission routes as a whole through the reasonable arrangement of component structures, and both are dynamically clutched, which greatly reduces impact and vibration and has a wide range of applications. At the same time, the input gear is arranged between the engine flywheel and the clutch, and power can be taken when the vehicle is stationary or in motion.

[0014] (2) The utility model is a power take-off device. Through the reasonable arrangement of the component structure, the input gear drives the gear pump to pump lubricating oil into the oil pipe, and the impurities in the lubricating oil are filtered through the filter and then sprayed from top to bottom into the shell through the nozzle, thereby lubricating the gears, bearings and other parts inside the shell. The structure is simple, the stability of the power take-off transmission is improved, and the maintenance cost is low. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the following specific embodiments, they are used to explain the present invention but do not constitute a limitation of the present invention. In the accompanying drawings:

[0016] Figure 1 It is a structural schematic diagram of the power take-off device of the present utility model.

[0017] The symbols in the figure represent:

[0018] 1 Input gear, 2 Clutch, 3 Transition flywheel, 4 First shock absorber, 5 Second shock absorber, 6 Intermediate gear, 7 Intermediate shaft, 8-1 First bearing, 8-2 Second bearing, 9 Output gear, 10 Output shaft, 11 Output clutch plate, 12 Output flange; A Transmission input shaft. DETAILED DESCRIPTION

[0019] The utility model is not limited to the following specific embodiments, and all equivalent changes made on the basis of the technical solution of this application fall within the protection scope of the utility model.

[0020] It should be noted that the directional terms mentioned in this article, such as "inner cavity", "inner periphery", "inner wall" and "outside", are consistent with the specific directions on the paper in the drawings of the specification or the corresponding directions of the space shown in the drawings; all components and equipment in this utility model, unless otherwise specified, are all components and equipment known in the prior art.

[0021] Example

[0022] This embodiment discloses a power take-off device, comprising a housing and an input gear 1 disposed within the housing. A second damper 5 coaxially connected to the engine flywheel is coaxially fixedly mounted at one end of the input gear 1. A transition flywheel 3 and a clutch 2 are coaxially fixedly mounted in sequence at the other end of the input gear 1. A first damper 4 coaxially connected to the transmission input shaft A is coaxially mounted within the clutch 2. The device also includes an intermediate shaft 7 disposed within the housing and an intermediate gear 6 coaxially fixed to the outer periphery of the intermediate shaft 7 midsection. The intermediate gear 6 meshes with the input gear 1 with their axes parallel to each other. The device also includes an output shaft 10 disposed within the housing and an output gear 9 coaxially fixed to the outer periphery of the intermediate shaft 10 midsection. One end of the output shaft 10 extends outward from the housing. The output gear 9 meshes with the intermediate gear 6 with their axes parallel to each other.

[0023] Its function is: the power is transmitted to the input gear 1 through the engine flywheel through the second shock absorber 5, and the input gear 1 is coaxially linked to the transition flywheel 3. At this time, the power transmitted backward is combined with the transition flywheel 3 through the clutch 2 to transmit the power to the transmission input shaft, thereby driving the transmission to work. At the same time, due to the arrangement of the second shock absorber 5 and the first shock absorber 4, the power output impact and vibration are reduced, the requirements for the clutch 2 are not high, the structure is simple and the maintenance cost is low; at the same time, the output gear 9 and the output shaft 10 are linked to rotate along their axes through the intermediate gear 6, and power is transmitted outward from one end of the output shaft 10 to the required equipment. The whole is two power transmission routes, and both are dynamic clutch control, which can greatly reduce impact and vibration and have a wide range of applications. At the same time, the input gear 1 of this embodiment is arranged between the engine flywheel and the clutch, and power can be taken when the vehicle is stationary or moving.

[0024] An output clutch plate 11 connected to one end of the output gear 9 is coaxially fixed to the outer periphery of the middle section of the output shaft 10 disclosed in this embodiment; an output flange 12 is coaxially connected to one end of the output shaft 10, and power is transmitted outward to the required equipment through the output flange 12; a first bearing 8-1 is coaxially connected between the intermediate shaft 7 and the housing, and a second bearing 8-2 is coaxially connected between the output shaft 10 and the housing, both of which play a role in supporting transmission.

[0025] This embodiment also includes a lubrication system, which includes a gear pump, a filter, an oil pipe and a nozzle. The gear pump is arranged at the bottom of the housing and is dynamically connected to the input gear 1. The filter is arranged at the upper part of the housing. One end of the oil pipe is connected to the output end of the gear pump, and the other end of the oil pipe is connected to the input end of the filter. The nozzle is located on the upper inner wall of the housing and connected to the output end of the filter. After the engine is started, the engine flywheel drives the power take-off device to work, and at the same time starts the lubrication system. The input gear drives the gear pump to pump lubricating oil into the oil pipe, and the impurities in the lubricating oil are filtered through the filter and then sprayed into the housing from top to bottom through the nozzle, thereby lubricating the gears, bearings and other parts inside the housing. The structure is simple, the stability of the power take-off transmission is improved, and the maintenance cost is low.

[0026] The preferred embodiments of the present disclosure are described in detail above in conjunction with the accompanying drawings. However, the present disclosure is not limited to the specific details of the above embodiments. Within the technical concept of the present disclosure, various simple modifications can be made to the technical solutions of the present disclosure, and these simple modifications all fall within the scope of protection of the present disclosure.

[0027] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any appropriate manner without contradiction. In order to avoid unnecessary repetition, the present disclosure will not further describe the various possible combinations. In addition, the various different embodiments disclosed in this solution can also be arbitrarily combined, as long as they do not violate the concept of this disclosure, they should also be regarded as the content of the invention of this disclosure.

Claims

1. A power take-off device, characterized in that: The invention comprises a housing and an input gear (1) arranged in the housing, wherein a second shock absorber (5) coaxially connected to an engine flywheel is fixedly provided at one end of the input gear (1), a transition flywheel (3) and a clutch (2) are coaxially fixedly provided at the other end of the input gear (1), and a first shock absorber (4) coaxially connected to a transmission input shaft (A) is coaxially provided in the clutch (2); It also includes an intermediate shaft (7) arranged in the housing and an intermediate gear (6) coaxially fixed to the outer periphery of the middle section of the intermediate shaft (7), wherein the intermediate gear (6) is meshed with the input gear (1) and the axis thereof is parallel to the input gear (1); The invention also includes an output shaft (10) arranged in the housing and an output gear (9) coaxially fixed to the outer periphery of the middle section of the output shaft (10). One end of the output shaft (10) extends outward from the housing. The output gear (9) is meshed with the intermediate gear (6) and the axes are parallel.

2. The power take-off device according to claim 1, characterized in that: An output clutch plate (11) connected to one end of the output gear (9) is coaxially fixedly disposed on the outer periphery of the middle section of the output shaft (10).

3. The power take-off device according to claim 2, characterized in that: It also includes a gear pump, a filter, an oil pipe and a nozzle, wherein the gear pump is arranged at the bottom of the housing and is connected to the input gear (1) in a dynamic manner, the filter is arranged at the upper part of the housing, one end of the oil pipe is connected to the output end of the gear pump, and the other end of the oil pipe is connected to the input end of the filter, and the nozzle is located on the inner wall of the upper part of the housing and is connected to the output end of the filter.

4. The power take-off device according to any one of claims 1 to 3, characterized in that: One end of the output shaft (10) is coaxially connected to an output flange (12).

5. The power take-off device according to claim 4, characterized in that: A first bearing (8-1) is coaxially connected between the intermediate shaft (7) and the housing.

6. The power take-off device according to claim 5, characterized in that: A second bearing (8-2) is coaxially connected between the output shaft (10) and the housing.

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