Test system of walking speed reducer

Abstract

The utility model discloses a test system of a walking speed reducer, and relates to the technical field of walking speed reducer tests. The test bed comprises a test bed frame and a hydraulic driving oil way, the test bed comprises a horizontally arranged bottom plate; a mounting plate is vertically fixed on the upper surface of the bottom plate; a connecting flange is vertically fixed on one side surface of the mounting plate; a limiting plate parallel to the mounting plate is vertically fixed on one side of the connecting flange; the walking speed reducer is fixed to the connecting flange, and the power output end of the walking speed reducer is connected to the limiting plate. The hydraulic drive oil way comprises a power station, a first overflow valve, an electromagnetic reversing valve and a hydraulic motor. The power station is connected with the inlet end of the first overflow valve through an oil pipe; the electromagnetic reversing valve is a three-position four-way reversing valve; and an oil return port of the electromagnetic reversing valve is connected with the power station. The walking speed reducer testing device is small in occupied space and convenient to transport and assemble, and the testing effect of the walking speed reducer is guaranteed.

Description

Technical Field

[0001] The utility model belongs to the technical field of traveling speed reducer testing, in particular to a traveling speed reducer testing system. Background Art

[0002] Travel reducers are important components of hydraulic excavators, crawler cranes and other engineering machinery, and their performance directly affects the performance of the above-mentioned engineering machinery. At present, the loading test of travel reducers is mainly carried out by installing the travel reducers on the corresponding host. Although this test method can truly reflect the impact of the corresponding host on the travel reducer, the installation time is too long and it occupies more machine resources. In addition, the travel reducer test device in the current related technology has many intermediate connection links, which makes installation and disassembly inconvenient, easily delays the progress of the project, and the test cost is high. Therefore, it is urgent to study a test system for travel reducers in order to solve the above problems. Utility Model Content

[0003] The utility model provides a test system for a travel reducer, and its purpose is to solve the technical problems raised in the above background technology.

[0004] In order to solve the above technical problems, the utility model is achieved through the following technical solutions:

[0005] The utility model discloses a test system for a travel reducer, comprising a test bench and a hydraulic drive oil circuit; the test bench comprises a horizontally arranged bottom plate; a mounting plate is vertically fixed to the upper surface of the bottom plate; a connecting flange is vertically fixed to one side of the mounting plate; a limit plate parallel to the mounting plate is vertically fixed to one side of the connecting flange; the travel reducer is fixed to the connecting flange, and the power output end of the travel reducer is connected to the limit plate; the hydraulic drive oil circuit comprises a power station, a first overflow valve, an electromagnetic reversing valve and a hydraulic motor; the power station is connected to the inlet end of the first overflow valve through an oil pipe; The solenoid reversing valve is a three-position four-way reversing valve; the return oil port of the solenoid reversing valve is connected to the power station through an oil pipe; the oil inlet of the solenoid reversing valve is connected to the oil outlet of the first overflow valve through an oil pipe; a working oil port of the solenoid reversing valve is connected to the oil inlet of the hydraulic motor through an oil pipe, and a second overflow valve and a first pressure gauge are installed side by side on the oil pipe; another working oil port of the solenoid reversing valve is connected to the return oil port of the hydraulic motor through an oil pipe, and a third overflow valve and a second pressure gauge are installed side by side on the oil pipe; the hydraulic motor is connected to the power input end of the travel reducer.

[0006] As a preferred technical solution of the utility model, a strain gauge is pasted inside the travel reducer; and the strain gauge is electrically connected to the data recorder.

[0007] As a preferred technical solution of the utility model, a first support plate is horizontally fixed to the upper surface of the base plate; a positioning plate with an L-shaped structure is fixed to the upper surface of the first support plate; the vertical section of the positioning plate is arranged parallel to the mounting plate; and the limit plate is fixed on the vertical section of the positioning plate.

[0008] As a preferred technical solution of the utility model, the vertical section of the positioning plate is vertically fixed with a second support plate parallel to the mounting plate; the second support plate is arranged between the base plate and the limiting plate, and the upper and lower surfaces of the second support plate are respectively in contact with the lower surface of the limiting plate and the upper surface of the base plate.

[0009] The utility model has the following beneficial effects:

[0010] The utility model adopts the form of fixing the power output end of the travel reducer to carry out the alternating load test. During the test, the travel reducer can be stably tested under the alternating load impact for a long time. At the same time, the test bench is small in size, convenient for transportation and assembly, the test load is easy to control, and the impact on the internal components of the travel reducer can be accurately read in real time. Under the premise of not affecting the function of the equipment, it not only optimizes the equipment structure and reduces the production cost, but also reduces the waste of resources. At the same time, the interchangeability of the parts of the test system is enhanced, so that the disassembly and assembly of the equipment during the later repair or replacement of parts are very simple and quick.

[0011] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for describing the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0013] Figure 1 The utility model is a schematic diagram of the structure of a test system of a travel reducer.

[0014] Figure 2 It is a schematic structural diagram of the connection between the first support plate and the positioning plate of the utility model.

[0015] Figure 3 It is the principle diagram of the hydraulic drive oil circuit of the utility model.

[0016] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0017] 1-base plate, 2-mounting plate, 3-limiting plate, 4-connecting flange, 5-first support plate, 6-positioning plate, 7-second support plate, 8-power station, 9-first overflow valve, 10-electromagnetic reversing valve, 11-hydraulic motor, 12-second overflow valve, 13-first pressure gauge, 14-third overflow valve, 15-second pressure gauge. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0019] See also Figure 1-3As shown, the utility model is a test system for a travel reducer, comprising a test bench and a hydraulic drive oil circuit; the test bench comprises a horizontally arranged base plate 1; a mounting plate 2 is vertically welded to the upper surface of the base plate 1; a side surface of the mounting plate 2 is vertically bolted to a conventional connecting flange 4 in the art; a limit plate 3 parallel to the mounting plate 2 is vertically fixed to one side of the connecting flange 4; the limit plate 3 is a conventional element in the art; the travel reducer is bolted to the connecting flange 4, and the power output end of the travel reducer is connected to the limit plate 3; the hydraulic drive oil circuit comprises a conventional power station 8 in the art, a conventional first overflow valve 9 in the art, a conventional electromagnetic reversing valve 10 in the art, and a conventional hydraulic motor 11 in the art; the power station 8 is connected to the inlet end of the first overflow valve 9 by an oil pipe; the electromagnetic reversing valve 10 is a conventional three-position four-way reversing valve in the art; the oil return port of the electromagnetic reversing valve 10 is connected to the power station 8 by an oil pipe; the oil inlet of the electromagnetic reversing valve 10 is connected to the first overflow valve 9 The oil outlets are connected by oil pipes; a working oil port of the electromagnetic reversing valve 10 is connected to the oil inlet of the hydraulic motor 11 by an oil pipe, and a conventional second overflow valve 12 and a conventional first pressure gauge 13 in the field are installed side by side on the oil pipe; another working oil port of the electromagnetic reversing valve 10 is connected to the return oil port of the hydraulic motor 11 by an oil pipe, and a conventional third overflow valve 14 and a conventional second pressure gauge 15 in the field are installed side by side on the oil pipe; the oil inlet of the hydraulic motor 11 can also be used as the return oil port, and at this time the return oil port of the hydraulic motor 11 is used as the oil inlet, so as to realize the forward and reverse rotation of the hydraulic motor 11; the hydraulic motor 11 is connected to the power input end of the travel reducer; a conventional strain gauge in the field is pasted inside the travel reducer, and the strain gauge can be set on the planetary frame column of the travel reducer; the casing of the travel reducer is drilled, and the strain gauge wire is led out and connected to a conventional data recorder in the field, so that the impact value can be read in real time. When in use, the travel reducer is bolted to the connecting flange 4, and the power output end of the travel reducer is connected to the limit plate 3. The limit plate 3 is used to prevent the power output end of the travel reducer from rotating. Then the hydraulic motor 11 is connected to the power input end of the travel reducer, and a strain gauge is pasted inside the travel reducer. The strain gauge is electrically connected to the data recorder. Then, the hydraulic oil of the power station 8 is delivered to the first overflow valve 9. The first overflow valve 9 controls the oil pressure. At the same time, the first overflow valve 9 delivers the hydraulic oil to the electromagnetic reversing valve 10. The electromagnetic reversing valve 10 controls the flow direction of the hydraulic oil, so that the hydraulic oil flows to the oil inlet or return port of the hydraulic motor 11, thereby controlling the forward and reverse rotation of the travel reducer through the hydraulic motor 11. The strain gauge collects the stress value of the travel reducer and transmits it to the data recorder. Finally, all impact values ​​of the travel reducer are read in real time through the data recorder, thereby realizing the loading test of the travel reducer, effectively ensuring the test efficiency and effect of the travel reducer.In addition, this test system is not only effective, convenient and practical, but also uses common parts such as hydraulic motors, hydraulic pumps, hydraulic valves, etc. commonly used by OEMs to reduce equipment investment costs. At the same time, the hydraulic components are small in size and take up little space, making it easy to adjust and assemble repeatedly according to the reducer model and test items.

[0020] Among them Figure 1-2 As shown, the upper surface of the bottom plate 1 is horizontally bolted with a first support plate 5; the upper surface of the first support plate 5 is bolted with a positioning plate 6 of an L-shaped structure; the vertical section of the positioning plate 6 is arranged parallel to the mounting plate 2; the limiting plate 3 is bolted to the vertical section of the positioning plate 6; the vertical section of the positioning plate 6 is vertically bolted with a second support plate 7 parallel to the mounting plate 2; the second support plate 7 is arranged between the bottom plate 1 and the limiting plate 3, and the upper and lower surfaces of the second support plate 7 are respectively in contact with the lower surface of the limiting plate 3 and the upper surface of the bottom plate 1. When in use, the limiting plate 3 is supported and limited by the first support plate 5, the positioning plate 6 and the second support plate 7, which effectively ensures the stability of the limiting plate 3, thereby ensuring the test effect of the travel reducer.

[0021] The preferred embodiments of the utility model disclosed above are only used to help explain the utility model. The preferred embodiments do not describe all the details in detail, nor do they limit the utility model to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the utility model, so that technicians in the relevant technical field can well understand and use the utility model. The utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A test system for a travel reducer, characterized in that: Including test bench and hydraulic drive oil circuit; The test bench comprises a horizontally arranged bottom plate (1); a mounting plate (2) is vertically fixed on the upper surface of the bottom plate (1); a connecting flange (4) is vertically fixed on one side of the mounting plate (2); a limiting plate (3) parallel to the mounting plate (2) is vertically fixed on one side of the connecting flange (4); the travel reducer is fixed on the connecting flange (4), and the power output end of the travel reducer is connected to the limiting plate (3); The hydraulic drive oil circuit comprises a power station (8), a first overflow valve (9), an electromagnetic reversing valve (10) and a hydraulic motor (11); the power station (8) and the inlet end of the first overflow valve (9) are connected via an oil pipe; the electromagnetic reversing valve (10) is a three-position four-way reversing valve; the oil return port of the electromagnetic reversing valve (10) and the power station (8) are connected via an oil pipe; the oil inlet of the electromagnetic reversing valve (10) and the oil outlet of the first overflow valve (9) are connected via an oil pipe; A working oil port of the electromagnetic reversing valve (10) is connected to an oil inlet of a hydraulic motor (11) via an oil pipe, and a second overflow valve (12) and a first pressure gauge (13) are installed side by side on the oil pipe; another working oil port of the electromagnetic reversing valve (10) is connected to an oil return port of the hydraulic motor (11) via an oil pipe, and a third overflow valve (14) and a second pressure gauge (15) are installed side by side on the oil pipe; and the hydraulic motor (11) is connected to a power input end of a travel reducer.

2. A test system for a travel reducer according to claim 1, characterized in that: A strain gauge is pasted inside the travel reducer; the strain gauge is electrically connected to the data recorder.

3. A travel reducer test system according to claim 1, characterized in that: A first support plate (5) is horizontally fixed on the upper surface of the base plate (1); a positioning plate (6) with an L-shaped structure is fixed on the upper surface of the first support plate (5); the vertical section of the positioning plate (6) is arranged parallel to the mounting plate (2); and the limiting plate (3) is fixed on the vertical section of the positioning plate (6).

4. A travel reducer test system according to claim 3, characterized in that: A second support plate (7) parallel to the mounting plate (2) is vertically fixed to the vertical section of the positioning plate (6); the second support plate (7) is arranged between the bottom plate (1) and the limiting plate (3), and the upper and lower surfaces of the second support plate (7) are respectively in contact with the lower surface of the limiting plate (3) and the upper surface of the bottom plate (1).

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