Wheel set installation cant indirect measurement method, device, equipment and medium

Abstract

The application discloses a wheel set installation deflection angle indirect measurement method, device, equipment and medium, relates to the vehicle technical field, obtains the frame inner distance and the wheel set inner distance, obtains the function relation of the wheel set and the frame distance and the wheel set installation deflection angle, takes the value of the installation deflection angle, the frame inner distance and the wheel set inner distance as the limiting condition, determines the tolerance range of the wheel set and the frame distance, determines the tolerance range of the wheel inner wall and the frame distance according to the tolerance range of the wheel set and the frame distance, judges whether the frame and the wheel set gap are in the tolerance range, and obtains the wheel set installation deflection angle indirect measurement scheme. The application indirectly and quickly obtains whether the wheel set installation deflection angle is qualified by judging whether the distance between the wheel inner wall and the frame is in the tolerance range, and solves the problems that it is difficult to directly measure the wheel set installation deflection angle and the measurement precision is difficult to guarantee.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of vehicles, in particular to a wheel set installation angle indirect measurement method, device, equipment and medium. BACKGROUND

[0002] Installing the wheel set on the frame is an important link in the bogie frame production line, and strict requirements are imposed on the assembly size. The wheel set installation angle will affect the dynamics performance of the vehicle, and when the installation angle is too large, it will adversely affect the lateral stability and curve passing performance of the vehicle. However, due to the large volume and weight of the bogie frame, and the complex structure of the frame and the wheel set, it is difficult to directly measure the installation angle of the wheel set, and it is difficult to ensure the measurement accuracy. SUMMARY

[0003] In view of the deficiencies in the prior art, the purpose of the present application is to provide a wheel set installation angle indirect measurement method, device, equipment and medium, which indirectly and quickly determines whether the wheel set installation angle is qualified by measuring whether the distance between the wheel inner wall and the frame is within the tolerance range, thereby solving the problems of difficult direct measurement of the wheel set installation angle and difficulty in ensuring the measurement accuracy.

[0004] In order to achieve the above-mentioned purpose, the present application is realized by the following technical solutions:

[0005] In a first aspect, the present application provides a wheel set installation angle indirect measurement method, comprising:

[0006] obtaining frame inner distance and wheel set inner distance parameters;

[0007] constructing a functional relationship between the wheel set and frame distance and the wheel set installation angle based on the frame inner distance and the wheel set inner distance;

[0008] determining the tolerance range of the wheel set and frame distance with the installation angle, the frame inner distance and the wheel set inner distance as limiting conditions;

[0009] determining the tolerance range of the distance between the wheel inner wall and the frame according to the tolerance range of the wheel set and frame distance, judging whether the gap between the frame and the wheel set is within the tolerance range, and obtaining a wheel set installation angle indirect measurement scheme.

[0010] As a further technical solution, the parameters further include a frame inner distance manufacturing tolerance upper limit, a frame inner distance manufacturing tolerance lower limit, a wheel set inner distance manufacturing tolerance upper limit, a wheel set inner distance manufacturing tolerance lower limit, and a maximum allowable installation angle.

[0011] As a further technical solution, the limiting conditions include:

[0012] when there is no installation angle, and the frame inner distance and the wheel set inner distance are standard values, the wheel set and frame distance takes the standard value;

[0013] When the installation angle is the maximum allowed installation angle, and the inner distance of the frame is the maximum value and the inner distance of the wheel set is the minimum value, the distance between the wheel set and the frame is the upper limit value.

[0014] When the installation angle is the maximum allowed installation angle, and the inner distance of the frame is the maximum value and the inner distance of the wheel set is the minimum value, the distance between the wheel set and the frame is the upper limit value.

[0015] As a further technical solution, the standard value is the difference between the inner distance of the frame and the inner distance of the wheel set, the lower limit value is the difference between the lower limit of the manufacturing tolerance of the inner distance of the frame and the upper limit of the manufacturing tolerance of the inner distance of the wheel set, and the upper limit value is the difference between the upper limit of the manufacturing tolerance of the inner distance of the frame and the lower limit of the manufacturing tolerance of the inner distance of the wheel set and the product of the maximum allowed installation angle cosine value.

[0016] As a further technical solution, the function relationship is:

[0017]

[0018] Wherein, X=A+B, A is the distance between one side wheel inner wall and the frame, B is the distance between the other side wheel inner wall and the frame; L is the inner distance of the frame, l is the inner distance of the wheel set, and θ is the installation angle of the wheel set.

[0019] As a further technical solution, the standard value of A is A=X / 2, the lower limit value of A is A min =INT(X min / 2), and the upper limit value of A is A max =INT(X max / 2);

[0020] The standard value of B is B=X / 2, the lower limit value of B is B min =INT(X min / 2), and the upper limit value of B is B max =INT(X max / 2);

[0021] Wherein, INT represents rounding down.

[0022] As a further technical solution, by measuring the gap between the frame and the wheel set, it is determined whether the gap between the frame and the wheel set is within the tolerance range of the distance between the wheel inner wall and the frame.

[0023] When the gap between the frame and the wheel set is within the tolerance range of the distance between the wheel inner wall and the frame, the installation angle of the wheel set meets the requirements; otherwise, it does not meet the requirements and needs to be adjusted again.

[0024] In a second aspect, the application also provides a wheel set installation angle indirect measurement device, comprising:

[0025] A parameter acquisition module is configured to acquire the inner distance of the frame and the inner distance of the wheel set.

[0026] a function relationship construction module, configured to construct a function relationship between the wheelset and the frame distance and the wheelset installation bias angle based on the frame inner distance and the wheelset inner distance;

[0027] a tolerance range determination module, configured to determine a tolerance range of the wheelset and the frame distance with the installation bias angle, the frame inner distance and the wheelset inner distance as the limiting conditions;

[0028] a judgment module, configured to determine a tolerance range of the wheel and the frame distance according to the tolerance range of the wheelset and the frame distance, judge whether the gap between the frame and the wheelset is within the tolerance range, and obtain the wheelset installation bias angle indirect measurement scheme.

[0029] In a third aspect, the present application further provides a wheelset installation bias angle indirect measurement device, comprising a memory and a processor;

[0030] The memory is used for storing related program codes;

[0031] The processor is used for calling the program codes and executing the wheelset installation bias angle indirect measurement method.

[0032] In a fourth aspect, the present application further provides a computer readable storage medium, which is used for storing a computer program, and the computer program is used for executing the wheelset installation bias angle indirect measurement method.

[0033] The beneficial effects of the present application are as follows:

[0034] The present application determines the tolerance range of the wheelset and the frame distance by determining the function relationship between the wheelset and the frame distance and the wheelset installation bias angle, so as to obtain the distance tolerance range between the wheel and the frame; and the distance between the wheel and the frame is directly measured to determine whether it is within the tolerance range, and the wheelset installation bias angle is indirectly and quickly determined to be qualified, thereby ensuring high measurement accuracy.

[0035] The present application determines the distance tolerance range selection method between the wheel and the frame, that is, when there is no installation bias angle and the frame inner distance and the wheelset inner distance are standard values, the wheelset and the frame distance is a standard value; when there is no installation bias angle and the frame inner distance is the minimum value and the wheelset inner distance is the maximum value, the wheelset and the frame distance is the lower limit value; when the installation bias angle is the maximum allowed installation bias angle and the frame inner distance is the maximum value and the wheelset inner distance is the minimum value, the wheelset and the frame distance is the upper limit value; and whether the wheelset installation bias angle meets the requirements is determined by judging whether the gap between the frame and the wheelset is within the tolerance range, so as to quickly determine whether the wheelset installation bias angle is qualified. BRIEF DESCRIPTION OF DRAWINGS

[0036] The drawings accompanying the specification of the present application form a part of the present application and serve to provide further understanding of the present application, and the illustrative embodiments of the present application and their descriptions serve to explain the present application, and do not constitute improper limitations on the present application.

[0037] Figure 1 This is a flowchart of the present invention according to one or more embodiments;

[0038] Figure 2 This is a schematic diagram of the bogie installation according to one or more embodiments of the present invention;

[0039] The diagram exaggerates the spacing or dimensions between parts to show their positions; the diagram is for illustrative purposes only.

[0040] 1. Frame, 2. Wheelset. Detailed Implementation

[0041] Example 1:

[0042] like Figure 2 As shown, mounting wheelset 2 onto frame 1 (bogie assembly) is a crucial step in the bogie frame production line, requiring strict adherence to assembly dimensions. Directly measuring the wheelset 2 mounting angle is difficult and compromises measurement accuracy. This embodiment provides an indirect method for measuring the wheelset mounting angle, such as... Figure 1 As shown, it includes:

[0043] Obtain the frame inner distance and wheelset inner distance parameters;

[0044] Based on the frame inner distance and wheelset inner distance, construct the functional relationship between the distance between the wheelset and the frame and the wheelset installation off-center angle;

[0045] The tolerance range of the distance between the wheelset and the frame is determined by using the values ​​of the installation offset angle, the inner distance of the frame, and the inner distance of the wheelset as limiting conditions;

[0046] Based on the tolerance range of the distance between the wheelset and the frame, determine the tolerance range of the distance between the inner wall of the wheel and the frame, judge whether the gap between the frame and the wheelset is within the tolerance range, and obtain the indirect measurement scheme of the wheelset installation angle.

[0047] Specifically, it includes the following steps:

[0048] Step 1: Determine the inner distance of the frame as L, and the upper limit of the manufacturing tolerance for the inner distance of the frame as L. max The lower limit of the manufacturing tolerance for the internal distance of the frame is L. min The inner wheelbase is l, and the upper limit of the manufacturing tolerance for the inner wheelbase is l. max The lower limit of the manufacturing tolerance for the inner distance of the wheelset is l min Maximum allowable installation angle [θ].

[0049] Step 2: The functional relationship between the distance X between the wheelset and the frame and the wheelset mounting angle θ is as follows:

[0050] The distance between the wheelset and the frame is: X = L - lcosθ.

[0051] Wherein, X=A+B, A is the distance between the inner wall of one side wheel and the frame, B is the distance between the inner wall of the other side wheel and the frame.

[0052] Step 3: Determine the tolerance range of X:

[0053] When θ=0°, i.e. no installation deflection angle, and the frame inner distance and the wheelset inner distance are standard values, X takes the standard value X=L-l;

[0054] When θ=0°, i.e. no installation deflection angle, and the frame inner distance takes the minimum value L min and the wheelset inner distance takes the maximum value l max , X takes the lower limit value X min =L min -l max ;

[0055] When θ=[θ], i.e. the maximum allowable installation deflection angle, and the frame inner distance takes the maximum value L max and the wheelset inner distance takes the minimum value l min , X takes the upper limit value X max =L max -l min cos[θ].

[0056] Step 4: Determine the tolerance range of A and B.

[0057] A and B are the distances between the inner walls of two wheels of a wheelset and the frame, and their tolerance ranges are the same, i.e. the standard value of A is A=X / 2; the lower limit value of A is A min =INT(X min / 2); the upper limit value of A is A max =INT(X max / 2);

[0058] The standard value of B is B=X / 2, the lower limit value of B is B min =INT(X min / 2), and the upper limit value of B is B max =INT(X max / 2);

[0059] Wherein, INT represents rounding down.

[0060] Step 5: Measure the clearance between the frame and the wheelset using a measuring scale, wherein the clearance between one wheel and the frame is a, and the clearance between the other wheel and the frame is b.

[0061] Step 6: Determine whether a(b) is within the tolerance range of A(B); if yes, the wheelset installation deflection angle meets the requirements; if not, the wheelset installation deflection angle does not meet the requirements and needs to be adjusted.

[0062] The embodiment determines the distance tolerance range between the wheel inner wall and the frame by determining the function relation of the wheelset and the frame distance and the wheelset installation angle, directly determines whether the distance between the wheel inner wall and the frame is within the tolerance range, indirectly and quickly determines whether the wheelset installation angle is qualified, and guarantees the measurement accuracy.

[0063] Embodiment two

[0064] The embodiment takes a certain type of bogie as an example to specifically describe the indirect measurement method of the wheelset installation angle in the embodiment one.

[0065] Step 1: determining that the frame inner distance is L=1790mm, the upper limit of the manufacturing tolerance is L max =1791mm, and the lower limit is L min =1789mm; the wheelset inner distance is l=1360mm, the upper limit of the manufacturing tolerance is l max =1361mm, and the lower limit is l min =1359mm; the maximum allowable installation angle is []=1°.

[0066] Step 2: determining the tolerance range of X.

[0067] The standard value of X is X=L-l=1790-1360=430mm by bringing the data in step 1 into the function relation formula.

[0068] The lower limit value of X is X min =L min -l max =1789-1361=428mm.

[0069] The upper limit value of X is X max =L max -l min cos[theta]=1791-1360*cos1°=432.2mm.

[0070] Step 3: determining the tolerance range of A and B.

[0071] The standard value of A is A=X / 2=430 / 2=215mm; the lower limit value of A is A min =INT(X min / 2)=INT(428 / 2)=214mm; and the upper limit value of A is A max =INT(X max / 2)=INT(432.2 / 2)=216mm.

[0072] The tolerance range of B is the same as that of A.

[0073] Step 4: Measure the frame and wheelset gap using a measuring ruler, respectively a = 215.5 mm, b = 214.8 mm.

[0074] Step 5: The values of a and b are in the range of (214-216) mm, and it is determined that the wheelset installation offset angle meets the requirements.

[0075] Example Three

[0076] The embodiment provides a wheelset installation offset angle indirect measurement device, which comprises:

[0077] A parameter acquisition module is configured to acquire frame inner distance and wheelset inner distance parameters.

[0078] A function relationship construction module is configured to construct a function relationship between wheelset and frame distance and wheelset installation offset angle based on the frame inner distance and the wheelset inner distance.

[0079] A tolerance range determination module is configured to determine a wheelset and frame distance tolerance range by taking the installation offset angle, the frame inner distance and the wheelset inner distance as limiting conditions.

[0080] A judgment module is configured to determine a wheel inner wall and frame distance tolerance range according to the wheelset and frame distance tolerance range, determine whether the frame and wheelset gap is within the tolerance range, and obtain a wheelset installation offset angle indirect measurement scheme.

[0081] In the embodiment, the parameter acquisition module is specifically configured to acquire the frame inner distance, the wheelset inner distance, the upper limit of the frame inner distance manufacturing tolerance, the lower limit of the frame inner distance manufacturing tolerance, the upper limit of the wheelset inner distance manufacturing tolerance, the lower limit of the wheelset inner distance manufacturing tolerance and the maximum allowable installation offset angle.

[0082] The function relationship obtained by the function relationship construction module is as follows:

[0083]

[0084] Wherein, X = A + B, A is the distance between one side wheel inner wall and the frame, B is the distance between the other side wheel inner wall and the frame; L is the frame inner distance, l is the wheelset inner distance, and θ is the wheelset installation offset angle.

[0085] The tolerance range determination module is specifically configured to determine the wheelset and frame distance tolerance range based on the limiting conditions that, without installation offset angle, and the frame inner distance and the wheelset inner distance are standard values, the wheelset and frame distance takes a standard value; without installation offset angle, and the frame inner distance takes a minimum value and the wheelset inner distance takes a maximum value, the wheelset and frame distance takes a lower limit value; the installation offset angle is the maximum allowable installation offset angle, and the frame inner distance takes a maximum value and the wheelset inner distance takes a minimum value, the wheelset and frame distance takes an upper limit value.

[0086] The judging module is specifically configured to judge whether the frame-wheelset gap is within a tolerance range of the distance between the wheel inner wall and the frame based on the measurement of the frame-wheelset gap; when the frame-wheelset gap is within the tolerance range of the distance between the wheel inner wall and the frame, the wheelset installation bias angle meets the requirement; otherwise, the wheelset installation bias angle does not meet the requirement, and the wheelset installation bias angle indirect measurement scheme needs to be adjusted again.

[0087] Embodiment four:

[0088] The embodiment provides a wheelset installation bias angle indirect measurement device, which comprises a memory and a processor.

[0089] The memory is used for storing related program codes.

[0090] The processor is used for calling the program codes and executing the wheelset installation bias angle indirect measurement method in the embodiment one.

[0091] Embodiment five:

[0092] The embodiment provides a computer readable storage medium, which is used for storing a computer program, and the computer program is used for executing the wheelset installation bias angle indirect measurement method in the embodiment one.

[0093] The above merely provides preferred embodiments of the present application but not for limiting the present application. For those skilled in the art, the present application can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A method of indirect measurement of wheelset installation cant, characterized in that, The method comprises the following steps: obtaining parameters of the inner distance of the frame and the inner distance of the wheel set; the parameters further comprise the upper limit of the manufacturing tolerance of the inner distance of the frame, the lower limit of the manufacturing tolerance of the inner distance of the frame, the upper limit of the manufacturing tolerance of the inner distance of the wheel set, the lower limit of the manufacturing tolerance of the inner distance of the wheel set, and the maximum allowable installation angle; constructing a functional relationship between the distance between the wheel set and the frame and the installation angle of the wheel set based on the inner distance of the frame and the inner distance of the wheel set; determining the tolerance range of the distance between the wheel set and the frame by taking the values of the installation angle, the inner distance of the frame and the inner distance of the wheel set as limiting conditions; the limiting conditions comprise: when there is no installation angle and the inner distance of the frame and the inner distance of the wheel set are standard values, the distance between the wheel set and the frame takes a standard value; when there is no installation angle and the inner distance of the frame takes a minimum value and the inner distance of the wheel set takes a maximum value, the distance between the wheel set and the frame takes a lower limit value; when the installation angle is the maximum allowable installation angle, the inner distance of the frame takes a maximum value and the inner distance of the wheel set takes a minimum value, the distance between the wheel set and the frame takes an upper limit value; determining the tolerance range of the distance between the inner wall of the wheel and the frame according to the tolerance range of the distance between the wheel set and the frame, judging whether the gap between the frame and the wheel set is within the tolerance range, and obtaining an indirect measurement scheme of the installation angle of the wheel set.

2. The method of claim 1, wherein, The standard value is the difference between the inner distance of the frame and the inner distance of the wheel set, the lower limit value is the difference between the lower limit of the manufacturing tolerance of the inner distance of the frame and the upper limit of the manufacturing tolerance of the inner distance of the wheel set, and the upper limit value is the difference between the upper limit of the manufacturing tolerance of the inner distance of the frame and the lower limit of the manufacturing tolerance of the inner distance of the wheel set and the product of the maximum allowable installation angle and the cosine value.

3. The method of claim 1, wherein: The functional relationship is: ； Wherein, X = A + B, A is the distance between the inner wall of one side wheel and the frame, B is the distance between the inner wall of the other side wheel and the frame; L is the inner distance of the frame, is the inner distance of the wheel set, is the mounting angle of the wheel set.

4. The method of claim 3, wherein, The standard value of A is A = INT ( X / 2), the lower limit value of A is A min = INT ( X min / 2), and the upper limit value of A is A max = INT ( X max / 2). The standard value of B is B = X / 2, the lower limit of B is B min =INT( X min / 2), the upper limit of B is B max =INT( X max / 2); wherein INT represents rounding down.

5. The indirect wheel set installation cant angle measurement method according to claim 1 or 4, characterized in that, By measuring the gap between the frame and the wheel set, it is judged whether the gap between the frame and the wheel set is within the tolerance range of the distance between the inner wall of the wheel and the frame; When the gap between the frame and the wheel set is within the tolerance range of the distance between the inner wall of the wheel and the frame, the installation angle of the wheel set meets the requirements; Otherwise, the requirements are not met and the wheel set needs to be adjusted again.

6. A wheel set installation cant indirect measuring device, characterized by, The method comprises the following steps: a parameter acquisition module is configured to acquire parameters of the inner distance of the frame and the inner distance of the wheel set; the parameters further comprise the upper limit of the manufacturing tolerance of the inner distance of the frame, the lower limit of the manufacturing tolerance of the inner distance of the frame, the upper limit of the manufacturing tolerance of the inner distance of the wheel set, the lower limit of the manufacturing tolerance of the inner distance of the wheel set, and the maximum allowable installation angle; a functional relationship construction module is configured to construct a functional relationship between the distance between the wheel set and the frame and the installation angle of the wheel set based on the inner distance of the frame and the inner distance of the wheel set; a tolerance range determination module is configured to determine the tolerance range of the distance between the wheel set and the frame by taking the values of the installation angle, the inner distance of the frame and the inner distance of the wheel set as limiting conditions; the limiting conditions comprise: when there is no installation angle and the inner distance of the frame and the inner distance of the wheel set are standard values, the distance between the wheel set and the frame takes a standard value; when there is no installation angle and the inner distance of the frame takes a minimum value and the inner distance of the wheel set takes a maximum value, the distance between the wheel set and the frame takes a lower limit value; when the installation angle is the maximum allowable installation angle, the inner distance of the frame takes a maximum value and the inner distance of the wheel set takes a minimum value, the distance between the wheel set and the frame takes an upper limit value; a judgment module is configured to determine the tolerance range of the distance between the inner wall of the wheel and the frame according to the tolerance range of the distance between the wheel set and the frame, judge whether the gap between the frame and the wheel set is within the tolerance range, and obtain an indirect measurement scheme of the installation angle of the wheel set.

7. A wheel set mounting cant indirect measuring device, characterized by The device comprises a memory and a processor; the memory is configured to store related program codes; The processor is configured to invoke the program code to execute the indirect measurement method of wheelset installation cant angle according to any one of claims 1-4.

8. A computer-readable storage medium, characterized in that, The computer readable storage medium is configured to store a computer program configured to execute the indirect measurement method of wheelset installation cant angle according to any one of claims 1-4.

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