Power take-off device single body test tool

Abstract

The utility model discloses a power takeoff unit testing tool, which comprises a shell and is characterized in that at least a first accommodating cavity and a second accommodating cavity which are communicated with each other are arranged in the shell, a central gear is arranged in the first accommodating cavity, an idle gear is arranged in the second accommodating cavity, and the idle gear is meshed with the central gear; the central gear is connected with an input flange through a driving wheel, and the input flange is connected with a driving mechanism; a first power take-off opening is formed in the position, corresponding to the idle wheel, of the side wall of the shell, and the first power take-off opening communicates with the second containing cavity. Different test bench driving mechanisms can be matched by replacing the input flange, so that redesign of a tool due to replacement of the test bench is avoided, and the test efficiency is improved; the power take-off devices of different specifications can be tested by replacing different central gears and idle gears for power transmission.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile detection, in particular to a single-body testing tool for a power take-off device. Background Art

[0002] Special vehicles or off-road vehicles, such as dump trucks, cranes, garbage trucks, etc., usually have other functions besides driving, such as bucket lifting, boom extension and retraction, etc., and the realization of these functions requires additional power input from a power take-off device. The power take-off device is installed on the vehicle engine, transmission and other mechanisms, and can directly take power from the vehicle's power system.

[0003] The power take-off device needs to be functionally tested after assembly. The current test mainly involves installing the power take-off device on the engine, transmission and other mechanisms to form a test assembly, and then conducting the test. The defects are: the test assembly is large and very heavy, the test bench is complex and takes up space, and if there is no engine, transmission and other mechanisms to match, the power take-off device cannot be tested, which is very inconvenient. Utility Model Content

[0004] In view of the above-mentioned defects and shortcomings in the prior art, the purpose of the present utility model is to provide a single-body testing tool for a power take-off device, so as to solve the technical problem of inconvenient testing of the power take-off device in the prior art and realize rapid and independent detection of the power take-off device.

[0005] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0006] A power take-off device unit test tool comprises a housing, wherein at least a first accommodating chamber and a second accommodating chamber which are connected to each other are arranged in the housing, a central gear is arranged in the first accommodating chamber, an idler wheel is arranged in the second accommodating chamber, and the idler wheel is meshedly connected with the central gear;

[0007] The central gear is connected to the input flange through the driving wheel, and the input flange is connected to the driving mechanism;

[0008] A first power take-off port is provided at a position of the shell side wall corresponding to the idler wheel, and the first power take-off port is communicated with the second accommodating chamber.

[0009] The utility model also has the following technical features:

[0010] Specifically, the central gear is provided with a first conical bearing and a second conical bearing in a coaxial sleeve, and the first conical bearing and the second conical bearing are provided with a support shaft in a coaxial sleeve, and the support shaft is fixed on the housing.

[0011] Furthermore, a pin is fixedly disposed in the second accommodating cavity, and a cylindrical roller bearing and the idler wheel are sequentially sleeved on the pin from the inside to the outside.

[0012] Furthermore, a mounting opening is provided at a position of the shell top plate corresponding to the second accommodating cavity, and an end cover is detachably provided on the mounting opening.

[0013] Furthermore, a sealing gasket is provided on the first power taking-off port, a second power taking-off port is opened on the sealing gasket, and the second power taking-off port is coaxially connected to the first power taking-off port.

[0014] Furthermore, a first lubricating oil hole and an oil outlet hole are arranged on the side wall of the shell; and a second lubricating oil hole is arranged on the top of the shell.

[0015] Furthermore, the input flange is also connected to the support shaft via an angular contact ball bearing, and the input flange, the angular contact ball bearing and the support shaft are coaxially arranged.

[0016] Furthermore, an auxiliary support frame is provided at a position of the shell side wall corresponding to the first accommodating cavity.

[0017] Compared with the prior art, the utility model has the following technical effects:

[0018] The utility model has a simple structure, and its volume and weight are much smaller than those of commonly used engines, transmissions and other mechanisms, and is more conducive to the construction of a test bench for a power take-off device. Whether the utility model is used to transform an existing test bench or to build a new test bench, the difficulty and cost are lower than those of a traditional test bench. By replacing the input flange, different test bench drive mechanisms can be matched, avoiding the need to redesign tooling due to replacement of the test bench, thereby improving the test efficiency. By replacing different central gears and idler wheels for power transmission, power take-off devices of different specifications can be tested. The internal oil passage is simple, and the transmission of lubricating oil can be achieved by simply connecting an external oil pipe. An annular interface is provided at the rear of the shell, which is convenient for disassembly and assembly of parts and subsequent troubleshooting and maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is an exploded view of the utility model;

[0020] Figure 2 It is a schematic diagram of the overall structure of the utility model;

[0021] Figure 3 It is a cross-sectional view of the utility model;

[0022] Figure 4 It is a side view of the utility model.

[0023] The numbers in the figure represent:

[0024] 1-housing, 2-center gear, 3-idler gear, 4-driving wheel, 5-input flange, 6-first tapered bearing, 7-second tapered bearing, 8-support shaft, 9-pin shaft, 10-cylindrical roller bearing, 11-sealing gasket, 12-angular contact ball bearing, 13-end cover, 14-power take-off device;

[0025] 101 - first accommodating chamber, 102 - second accommodating chamber, 103 - first power take-off port, 104 - first lubricating oil hole, 105 - oil outlet hole, 106 - second lubricating oil hole, 107 - auxiliary support frame.

[0026] The specific contents of the utility model are further explained in detail below in conjunction with the embodiments. DETAILED DESCRIPTION

[0027] The following are specific embodiments of the present invention. It should be noted that the present invention is not limited to the following specific embodiments, and all equivalent changes made on the basis of the technical solution of the present application fall within the protection scope of the present invention.

[0028] When describing the orientation of the present invention, the orientation or positional relationship indicated by terms such as "upper", "lower", "front", "back", "left", and "right" are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0029] In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. Unless otherwise specified, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal connection of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0030] Unless otherwise specified, the components in the present invention are commercially available.

[0031] Example 1

[0032] Following the above technical solution, Figures 1 to 4As shown, the present embodiment provides a single-body test tool for a power take-off device 14, including a shell 1. The shell 1 serves as the main supporting component of the test tool. The shell 1 is provided with at least a first accommodating chamber 101 and a second accommodating chamber 102 which are interconnected. A central gear 2 is provided in the first accommodating chamber 101, and an idler wheel 3 is provided in the second accommodating chamber 102. The idler wheel 3 is meshedly connected with the central gear 2 to realize power transmission. In other embodiments, power take-off devices 14 of different specifications can be tested by replacing the central gear and the idler wheel.

[0033] like Figure 1 As shown, the lower end of the center gear 2 is connected to the upper end of the driving wheel 4, the lower end of the driving wheel 4 is connected to the input flange 5, and a sealing ring is also arranged between the driving wheel 4 and the input flange 5. The input flange 5 is provided with an interface connected to the driving mechanism, which can realize power transmission by connecting with the driving mechanism. The driving mechanism can be a driving motor or other power mechanism; the driving tooth 4 is provided with a spline meshing with the center tooth 2, which can further transmit the power transmitted by the input flange 5 to the center gear 2. In other embodiments, different types of driving mechanisms can be connected by replacing the input flange 5, thereby reducing the steps of redesigning the tooling due to replacing the test bench and improving the test efficiency.

[0034] A first power take-off port 103 is provided at a position on the side wall of the shell 1 corresponding to the idler wheel 3. The first power take-off port 103 is connected to the second accommodating chamber 102. The power input gear of the power take-off device 14 to be tested can enter the second accommodating chamber 102 through the first power take-off port 103 and mesh with the idler wheel 3 to realize power transmission.

[0035] As a preferred solution of this embodiment, a first conical bearing 6 and a second conical bearing 7 are coaxially sleeved in the center gear 2, and a support shaft 8 is coaxially sleeved in the first conical bearing 6 and the second conical bearing 7. The support shaft 8 is fixed to the housing 1 by means of bolts, and a sealing gasket is provided between the top surface of the support shaft 8 and the inner wall of the housing to ensure that there is no oil leakage during the test phase. The structures of the first conical bearing 6 and the second conical bearing 7 are exactly the same and are arranged in a mirror-symmetrical manner. The center gear 2, the first conical bearing 6 and the support shaft 8 are coaxially sleeved from the outside to the inside.

[0036] As a preferred solution of this embodiment, a pin shaft 9 is fixedly arranged in the second accommodating chamber 102, and the idler wheel 3 is sleeved on the pin shaft 9 through a cylindrical roller bearing 10. The pin shaft 9 is fixedly mounted on the housing 1 by means of bolts, and provides support for the cylindrical roller bearing 10. An oil flow channel is provided on the side wall of the housing 1, and lubricating oil can be provided to the cylindrical roller bearing 10 through the oil flow channel.

[0037] As a preferred solution of this embodiment, Figure 1In the direction shown, an installation opening is opened at a position corresponding to the top plate of the shell 1 and the second accommodating chamber 102, and an end cover 13 is detachably provided on the installation opening. The installation opening is provided for the purpose of parts disassembly and assembly, later troubleshooting and maintenance, and a sealing gasket is provided between the end cover 13 and the installation opening, so that the end cover 13 and the installation opening can be sealed and connected.

[0038] As a preferred solution of this embodiment, a sealing gasket 11 is provided on the first power take-off port 103, a second power take-off port 111 is provided on the sealing gasket 11, the second power take-off port 111 is coaxially connected with the first power take-off port 103, a positioning pin is passed through the sealing gasket 11, and the side power take-off device 14 is connected to the housing 1 via the positioning pin and bolts. The sealing gasket 11 can prevent oil leakage.

[0039] As a preferred solution of this embodiment, a first lubricating oil hole 104 and an oil outlet hole 105 are provided on the side wall of the housing 1; a second lubricating oil hole 106 is provided on the top of the housing 1, and the first lubricating oil hole 104 and the second lubricating oil hole 106 are respectively connected to the oil inlet pipe; and the oil outlet hole 105 is connected to the oil outlet pipe. The first lubricating oil hole 104 and the second lubricating oil hole 106 are used to add lubricating oil to the test fixture, and the oil outlet hole 105 is used to discharge the oil inside the test fixture in time to avoid leakage caused by oil accumulation and excessive energy loss.

[0040] As a preferred solution of this embodiment, the input flange 5 is also connected to the support shaft 8 through an angular contact ball bearing 12, and the input flange 5, the angular contact ball bearing 12 and the support shaft 8 are coaxially arranged. The angular contact ball bearing 12 can radially support the driving gear 4 and the input flange 5. A first retaining ring is arranged between the angular contact ball bearing 12 and the second tapered bearing 7, and a second retaining ring for limiting the angular contact ball bearing 12 is also sleeved on the outer wall of the lower end of the support shaft 8.

[0041] As a preferred solution of this embodiment, an auxiliary support frame 108 is further provided at a position of the side wall of the shell 1 corresponding to the first accommodating cavity 101 , and the auxiliary support frame 107 can be used to connect the test fixture and the test bench.

[0042] The use process of the utility model is as follows:

[0043] When using this utility model: Figure 3 The direction shown is set, that is, the first power take-off port 103 is facing upward, the auxiliary support frame 107 is connected to the test bench by bolts; the input flange 5 is connected to the driving mechanism on the test bench, the power take-off device 14 to be tested is connected to the housing 1 by bolts, the power input gear of the power take-off device 14 to be tested is meshed with the idler wheel 3 to realize power transmission during the test, and the output flange of the power take-off device 14 to be tested is connected to the load end of the test bench.

[0044] During the test, the speed and torque of the power mechanism, as well as the speed and torque of the load end are adjusted through a controller electrically connected to the test bench to simulate the working conditions of the power take-off device to be tested, measure the limit performance parameters of the power take-off device to be tested, and the test results are directly fed back to the controller.

[0045] The above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. For those skilled in the art, the utility model may have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A power take-off device unit test tool, comprising a housing (1), characterized in that: The housing (1) is provided with at least a first accommodating chamber (101) and a second accommodating chamber (102) which are communicated with each other, the first accommodating chamber (101) is provided with a central gear (2), the second accommodating chamber (102) is provided with an idler gear (3), and the idler gear (3) is meshingly connected with the central gear (2); The central gear (2) is connected to an input flange (5) via a driving wheel (4), and the input flange (5) is connected to a driving mechanism; A first power take-off port (103) is provided at a position on the side wall of the housing (1) corresponding to the idler wheel (3), and the first power take-off port (103) is in communication with the second accommodating chamber (102).

2. The power take-off device unit test tool as claimed in claim 1, characterized in that: A first conical bearing (6) and a second conical bearing (7) are coaxially sleeved in the central gear (2), and a support shaft (8) is coaxially sleeved in the first conical bearing (6) and the second conical bearing (7), and the support shaft (8) is fixed on the housing (1).

3. The power take-off device unit test tool as claimed in claim 1, characterized in that: A pin shaft (9) is fixedly arranged in the second accommodating cavity (102), and the idler wheel (3) is sleeved on the pin shaft (9) via a cylindrical roller bearing (10).

4. The power take-off device unit test tool as claimed in claim 1, characterized in that: An installation opening is provided at a position of the top plate of the shell (1) corresponding to the second accommodating cavity (102), and an end cover (13) is detachably provided on the installation opening.

5. The power take-off device unit test tool as claimed in claim 1, characterized in that: A sealing gasket (11) is provided on the first power take-off port (103), a second power take-off port (111) is opened on the sealing gasket (11), and the second power take-off port (111) is coaxially connected to the first power take-off port (103).

6. The power take-off device unit test tool as claimed in claim 1, characterized in that: A first lubricating oil hole (104) and an oil outlet hole (105) are provided on the side wall of the housing (1); and a second lubricating oil hole (106) is provided on the top of the housing (1).

7. The power take-off device unit test tool as claimed in claim 2, characterized in that: The input flange (5) is also connected to the support shaft (8) via an angular contact ball bearing (12), and the input flange (5), the angular contact ball bearing (12) and the support shaft (8) are coaxially arranged.

8. The power take-off device unit test tool as claimed in claim 1, characterized in that: An auxiliary support frame (107) is also provided at a position on the side wall of the shell (1) corresponding to the first accommodating cavity (101).

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