A numerical maintenance tool vehicle for rail vehicles

Abstract

The present invention relates to the technical field of rail transit maintenance, and in particular to a rail vehicle digital maintenance tool vehicle, which includes: a car body; a bearing platform arranged on the car body, on which wrench placement slots of different sizes are provided, and a sensing prompter is provided on one side of each wrench placement slot, and the sensing prompter is used to send prompt information; a torque wrench is placed in each wrench placement slot; a controller, including: an acquisition module, used to obtain assembly component information; a first matching module, used to match the assembly strategy according to the assembly component information; a second matching module, used to match the torque wrench adapted to each assembly point according to the assembly strategy and the torque range of all torque wrenches on the bearing platform; a prompt module, used to control the sensing prompter on one side of the wrench placement slot of the torque wrench adapted to the assembly point in sequence according to the assembly sequence to send prompt information. The present application has the effect of improving the efficiency and standardization of torque wrench selection during assembly.

Description

Technical Field

[0001] The present invention relates to the technical field of rail transit maintenance, and in particular to a numerical maintenance tool vehicle for rail vehicles. Background Art

[0002] In the industrial assembly process, torque wrenches are one of the most commonly used tools. Through torque wrenches, operators can apply specific torque values ​​to meet assembly requirements.

[0003] In the actual assembly process, it is often necessary to tighten bolts of different sizes and with different torque requirements. Therefore, the torque wrench needs to be selected and matched before each operation. At the same time, for novice operators, the torque requirement of each bolt is different. Therefore, before each operation, the torque requirement of each position needs to be obtained according to the process document. Obviously, the existing management and control method of torque wrenches requires a more cumbersome matching process when assembling more complex products. Obviously, this will affect the efficiency and standardization of the assembly process. Summary of the invention

[0004] In order to improve the efficiency and standardization of torque wrench selection during the assembly process, the present application provides a rail vehicle digital maintenance tool vehicle.

[0005] The above-mentioned invention objective of the present application is achieved through the following technical solutions:

[0006] A rail vehicle digital maintenance tool vehicle, comprising:

[0007] Vehicle body;

[0008] A load-bearing platform is arranged on the vehicle body, and the load-bearing platform is provided with wrench placement slots of different sizes, and a sensor prompter is provided on one side of each wrench placement slot, and the sensor prompter is used to issue prompt information; a torque wrench is placed in each wrench placement slot, and each torque wrench has a torque range, and each torque wrench has a different torque range, and the torque range has a middle precision interval;

[0009] Controller, including:

[0010] An acquisition module, used for acquiring assembly component information;

[0011] A first matching module is used to match an assembly strategy according to the assembly component information, wherein the assembly strategy includes each assembly point of the assembly component, an assembly sequence of each assembly point, and a torque requirement of each assembly point;

[0012] A second matching module is used to match the torque range of all torque wrenches on the bearing platform according to the assembly strategy to obtain a torque wrench suitable for each assembly point;

[0013] The prompt module is used to control the sensor prompter on one side of the wrench placement slot of the torque wrench that is adapted to the assembly point in sequence according to the assembly sequence to send prompt information.

[0014] By adopting the above technical solution, by obtaining the assembly component information, the corresponding torque wrench information is prompted in the existing multiple torque wrenches, which can help the operator quickly find the required torque wrench. The operator does not need to check the process documents to determine the torque requirement of the assembly point, nor does the operator need to select the corresponding torque wrench according to the torque requirement. It can greatly reduce the tediousness of the operator's operation during the assembly or maintenance process, improve the efficiency of torque wrench selection during the assembly process, and avoid human negligence. Therefore, the accuracy and standardization of the torque wrench selection process are achieved, and the efficiency and standardization of torque wrench selection during the assembly process are improved.

[0015] In a preferred example, the present application can be further configured as follows: the torque wrench adapted to each assembly point is obtained according to the assembly strategy and the torque range matching of all torque wrenches on the support platform, including:

[0016] A. Determine whether the set of all middle precision intervals contains the torque requirements of all assembly points;

[0017] B. If not, adjust the middle precise interval a based on the adjustment value n to generate the middle adjustment interval;

[0018] C. Assign 1.5n to n;

[0019] D. Determine whether the set of all middle adjustment intervals contains the torque requirements of all assembly points;

[0020] E. If the set of all middle adjustment intervals does not include the torque requirements of all assembly points, then execute steps B, C, and D;

[0021] F. If the set of all middle adjustment intervals includes the torque requirements of all assembly points, or the set of all middle precision intervals includes the torque requirements of all assembly points, then execute the step B, and generate the adaptation middle adjustment interval set of each assembly point according to the torque requirements of each assembly point and the middle adjustment interval of each torque wrench, and the middle adjustment interval set of each assembly point includes at least one middle adjustment interval of a torque wrench;

[0022] G. adjusting the middle adjustment interval set of each assembly point according to the historical usage of each torque wrench, so that the middle adjustment interval set of each assembly point only contains the middle adjustment interval of one torque wrench;

[0023] H. Generate a torque wrench suitable for each assembly point according to the adjusted middle adjustment interval set of each assembly point.

[0024] By adopting the above technical solution, it is possible to adapt to a torque wrench with higher precision that is more suitable for each assembly point by continuously expanding the range, thereby improving the processing accuracy.

[0025] In a preferred example, the present application can be further configured as follows: adjusting the middle adjustment interval set of each assembly point according to the historical usage of each torque wrench includes:

[0026] Get the historical usage of each torque wrench;

[0027] The torque wrenches are sorted according to their historical usage to obtain a frequency sequence;

[0028] The middle adjustment interval set of each assembly point is adjusted according to the frequency sequence, so that the middle adjustment interval set of each assembly point only includes the middle adjustment interval of one torque wrench.

[0029] By adopting the above technical solution, the torque wrenches with poor adaptability in the middle adjustment range of each assembly point are screened out according to the historical usage of each torque wrench, thereby improving the assembly accuracy.

[0030] In a preferred example, the present application may be further configured as follows: the historical usage includes a historical overload count x and a historical usage count y.

[0031] In a preferred example, the present application may be further configured as follows: further comprising: the frequency sequence obtained by sorting the torque wrenches according to the historical usage of the torque wrenches includes:

[0032] Generate the actual number t of each torque wrench according to the historical overload number x and the historical usage number y of each torque wrench, wherein t=y*(1000+x^3) / 1000;

[0033] The torque wrenches are sorted according to the actual number t of each torque wrench to obtain a frequency sequence.

[0034] By adopting the above technical solution, as the historical overload times of the torque wrench increase, its actual times will increase accordingly. Since the overload times will cause some loss in the accuracy of the torque wrench, the above formula can better simulate the ranking of the accuracy changes of the torque wrenches, and then the frequency sequence can reflect the ranking of the accuracy changes of each torque wrench.

[0035] In a preferred example, the present application can be further configured as follows: adjusting the middle adjustment interval set of each assembly point according to the historical usage of each torque wrench includes:

[0036] Delete the middle adjustment intervals except those with the lowest frequency sequence in the middle adjustment interval set.

[0037] By adopting the above technical solution, the most suitable torque wrench with the highest accuracy can be selected to match the corresponding assembly point.

[0038] In a preferred example, the present application may be further configured as follows: the prompt module includes a first prompt unit and a second prompt unit;

[0039] When the staff takes away the torque wrench in the wrench placement slot on one side of the prompted inductive prompter, the first prompting unit controls the inductive prompter to stop sending prompt information;

[0040] When the staff puts the correct torque wrench into the wrench placement slot, the second prompt unit controls the induction prompter on one side of the wrench placement slot of the torque wrench that is adapted to the next assembly point in the assembly sequence to send a prompt message.

[0041] In a preferred example, the present application can be further configured as follows: when the staff puts the wrong torque wrench into the wrench placement slot, the first prompt unit controls the sensor indicator on one side of the wrench placement slot to send out an alarm message; the second prompt unit controls the sensor indicator on the side of the wrench placement slot of the torque wrench that is adapted to the next assembly point in the assembly sequence not to send out a prompt message.

[0042] By adopting the above technical solution, it is possible to gradually remind the operator to use the corresponding torque wrenches in order according to the assembly sequence of the assembly strategy.

[0043] In a preferred example, the present application can be further configured as follows: the sensing indicator includes a processor and a weight sensor arranged at the bottom of the wrench placement slot, the weight sensor is used to weigh the weight of the torque wrench placed in the wrench placement slot and send it to the processor, and the processor is used to determine whether the weight is correct.

[0044] In summary, the present application includes at least one of the following beneficial technical effects:

[0045] 1. The present invention obtains assembly component information and prompts the corresponding torque wrench information in the existing multiple torque wrenches, which can help operators quickly find the required torque wrench. Operators do not need to check process documents to determine the torque requirements of the assembly point, nor do they need to select the corresponding torque wrench according to the torque requirements. This can greatly reduce the complexity of operators' operations during assembly or maintenance, improve the efficiency of torque wrench selection during assembly, and avoid human negligence. Therefore, the accuracy and standard of the torque wrench selection process are achieved, and the efficiency and standard of torque wrench selection during assembly are improved;

[0046] 2. By continuously expanding the range, it is possible to adapt to a torque wrench with higher precision that is more suitable for each assembly point, which can improve the processing accuracy;

[0047] 3. As the historical overload times of the torque wrench increase, its actual times will increase accordingly. Since the overload times will cause some loss in the accuracy of the torque wrench, the above formula can better simulate the ranking of the accuracy changes of the torque wrench, and then the frequency sequence can reflect the ranking of the accuracy changes of each torque wrench, and the most suitable torque wrench with the highest accuracy can be selected to match the corresponding assembly point. BRIEF DESCRIPTION OF THE DRAWINGS

[0048] Figure 1 It is a schematic diagram of the overall structure of a rail vehicle digital maintenance tool vehicle in one embodiment of the present application;

[0049] Figure 2 This is a schematic diagram of the table structure of the carrier table of the rail vehicle digital maintenance tool vehicle in one embodiment of the present application;

[0050] Figure 3 This is a schematic diagram of the connection of various modules in a rail vehicle digital maintenance tool vehicle in an embodiment of the present application;

[0051] Figure 4 It is a schematic diagram of the execution steps of the second matching module in the rail vehicle digital maintenance tool vehicle in one embodiment of the present application;

[0052] Figure 5 It is a schematic diagram of specific steps of step G in the execution steps of the second matching module in one embodiment of the present application;

[0053] Figure 6 It is a schematic diagram of the specific steps of step G-2 in one embodiment of the present application.

[0054] Figure numerals: 1. vehicle body; 2. load-bearing platform; 3. induction indicator; 4. torque wrench; 5. wrench placement slot. DETAILED DESCRIPTION

[0055] The following is a description of exemplary embodiments of the present application in conjunction with the accompanying drawings, including various details of the embodiments of the present application to facilitate understanding, which should be considered as merely exemplary. Therefore, it should be recognized by those of ordinary skill in the art that various changes and modifications can be made to the embodiments described herein without departing from the scope and spirit of the present application. Similarly, for the sake of clarity and conciseness, the description of well-known functions and structures is omitted in the following description.

[0056] It should be noted that the terms "first", "second", etc. in the present invention are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the present disclosure described herein can be implemented in an order other than those illustrated or described herein. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present disclosure.

[0057] In addition, the term "and / or" in this article is only a description of the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article, unless otherwise specified, generally means that the associated objects before and after are in an "or" relationship.

[0058] Reference Figure 1 and Figure 2 The rail vehicle digital maintenance tool vehicle includes a vehicle body 1 and a controller. The vehicle body 1 is provided with a carrying platform 2. The carrying platform 2 is provided with wrench placement slots 5 of different sizes for placing torque wrenches 4 of different sizes. Each torque wrench 4 has a torque range, and the torque range of each torque wrench 4 is different. For example, the torque ranges of the torque wrenches 4 are 1-5N, 5-25N, 10-50N, 20-100N, 40-200N, and 70-350N, respectively.

[0059] The torque range has a middle precision interval, wherein the middle precision interval refers to a middle interval pre-divided and set in the torque range. For example, the torque range of a torque wrench 4 is 10-50N, and the middle precision interval is set to 26~34N.

[0060] Each wrench placement slot 5 has a sensing indicator 3 on one side. The sensing indicator 3 includes a processor and a weight sensor arranged at the bottom of the wrench placement slot 5. The weight sensor is used to weigh the weight of the torque wrench 4 placed in the wrench placement slot 5 and send it to the processor. The processor is used to determine whether the weight is correct. Specifically, each processor stores the correct weight of the torque wrench 4 placed in the corresponding wrench placement slot 5, and compares the detected weight of the torque wrench 4 placed in the wrench placement slot 5 with the correct weight, thereby determining whether the weight is correct.

[0061] The above-mentioned controller and the sensor prompter 3 are communicated and connected. Specifically, in this embodiment, wireless communication is preferably used, such as LoRa technology, [WiFi / IEEE 802.11] protocol, [ZigBee / 802.15.4] protocol, [Thread / IEEE 802.15.4], [Z-Wave] protocol, etc. to achieve communication.

[0062] Reference Figure 3 The controller includes an acquisition module, a first matching module, a second matching module and a prompt module, wherein the acquisition module is used to acquire assembly component information, and the first matching module is used to match the assembly strategy according to the assembly component information.

[0063] Specifically, the assembly component information is obtained by multiple methods such as instructions issued by the upper management software or scanning or manual input by operators, and the assembly strategy corresponding to each assembly component information is preset in the storage library of the controller, wherein the assembly strategy includes each assembly point of the assembly component, the assembly sequence of each assembly point, and the torque requirement of each assembly point;

[0064] Therefore, by obtaining the assembly component information to be assembled, it is possible to compare it with the preset information of the assembly component information to match the different requirements for the torque wrench 4 .

[0065] It should be noted that the same component may have different requirements for the torque wrench 4 , so the above assembly component information includes the torque requirements of all assembly points.

[0066] The second matching module is used to match the torque wrench 4 adapted to each assembly point according to the assembly strategy and the torque range of all the torque wrenches 4 on the carrier 2;

[0067] Reference Figure 4 Specifically, according to the assembly strategy and the torque range matching of all the torque wrenches 4 on the support platform 2, a torque wrench 4 adapted to each assembly point is obtained, including the following steps:

[0068] A. Determine whether the set of all middle precision intervals contains the torque requirements of all assembly points;

[0069] B. If not, adjust the middle precise interval a based on the adjustment value n to generate the middle adjustment interval;

[0070] C. Assign 1.5n to n;

[0071] D. Determine whether the set of all middle adjustment intervals contains the torque requirements of all assembly points;

[0072] E. If the set of all middle adjustment intervals does not include the torque requirements of all assembly points, execute steps B, C, and D;

[0073] F. If the set of all middle adjustment intervals includes the torque requirements of all assembly points, or the torque requirement of any assembly point is within any middle precision interval, then execute step B, and generate the adaptation middle adjustment interval set of each assembly point according to the torque requirements of each assembly point and the middle adjustment interval of each torque wrench 4, and the middle adjustment interval set of each assembly point includes at least one middle adjustment interval of the torque wrench 4;

[0074] G. adjusting the middle adjustment interval set of each assembly point according to the historical usage of each torque wrench 4, so that the middle adjustment interval set of each assembly point only includes the middle adjustment interval of one torque wrench 4;

[0075] H. Generate a torque wrench 4 suitable for each assembly point according to the adjusted middle adjustment interval set of each assembly point.

[0076] Among them, whether the set of all the middle precise intervals in step A includes the torque requirements of all assembly points means assuming that there are 10 assembly points and 6 middle precise intervals. If the torque requirements of the 10 assembly points are all within the set composed of the 6 middle precise intervals, then the set of all the middle precise intervals includes the torque requirements of all assembly points; if the torque requirements of any assembly point among the 10 assembly points are not within the set composed of the 6 middle precise intervals, then no, that is, the set of all the middle precise intervals does not include the torque requirements of all assembly points.

[0077] Similarly, the above determination of whether the set of all middle adjustment intervals includes the torque requirements of all assembly points also adopts the same determination method, only the "set of middle precise intervals" used for determination is replaced by the "set of middle adjustment intervals".

[0078] Each time the judgment is negative, the adjustment value n is increased, and each time it is multiplied by 1.5. The adjustment value n can be preset, for example, 3. If the middle precision interval is set to 26~34N, the adjusted middle adjustment interval is 23~37N, that is, the interval is widened by the adjustment value n. The second widening value is 4.5, that is, 23~37N becomes 18.5~41.5N.

[0079] This cycle is repeated until the set of all middle adjustment intervals includes the torque requirements of all assembly points, or the set of all middle precise intervals includes the torque requirements of all assembly points, then step B is executed again to widen the intervals again, and then the adapted middle adjustment interval set of each assembly point is generated according to the torque requirements of each assembly point and the middle adjustment interval of each torque wrench 4, and the middle adjustment interval set of each assembly point includes at least one middle adjustment interval of a torque wrench 4; that is, the middle adjustment interval set of an assembly point may include multiple middle adjustment intervals, and as long as the torque requirement of the assembly point is within a certain middle adjustment interval, the middle adjustment interval is regarded as a middle adjustment interval in the middle adjustment interval set of the assembly point.

[0080] Reference Figure 5 The above-mentioned adjustment of the middle adjustment interval set of each assembly point according to the historical usage of each torque wrench 4 includes:

[0081] G-1. Obtaining the historical usage of each torque wrench 4;

[0082] G-2. Sort the torque wrenches 4 according to their historical usage to obtain a frequency sequence;

[0083] G-3. Adjust the middle adjustment interval set of each assembly point according to the frequency sequence, so that the middle adjustment interval set of each assembly point only includes the middle adjustment interval of one torque wrench 4.

[0084] The historical usage includes the historical overload times x and the historical usage times y. Figure 6 , sorting each torque wrench 4 according to the historical usage of each torque wrench 4 to obtain a frequency sequence, including:

[0085] G-21. Generate the actual number t of each torque wrench 4 according to the historical overload number x and the historical usage number y of each torque wrench 4, where the actual number t=y*(1000+x^3) / 1000;

[0086] G-22. Sort the torque wrenches 4 according to their actual times t to obtain a frequency sequence.

[0087] Specifically, the actual number t is sorted from large to small. For example, the historical overload number of a torque wrench 4 is 5 times, and the historical usage number y is 500 times, then the actual number t=500*(1000+5^3) / 1000=562.5 times. It can be understood that as the historical overload number of the torque wrench 4 increases, its actual number increases accordingly. Since the overload number will cause a loss in the accuracy of the torque wrench 4, the above formula can better simulate the accuracy change ranking of the torque wrench 4, and then the frequency sequence can reflect the accuracy change ranking of each torque wrench 4.

[0088] The above-mentioned adjustment of the middle adjustment interval set of each assembly point according to the historical usage of each torque wrench 4 includes deleting the middle adjustment intervals in the middle adjustment interval set except for the one with the lowest frequency sequence. That is, among the multiple middle adjustment intervals in the middle adjustment interval set corresponding to an assembly point, only the middle adjustment interval with the lowest frequency sequence is retained as the adjusted middle adjustment interval.

[0089] It can be understood that the adjusted middle adjustment interval must have the smallest accuracy change in the original middle adjustment interval set; and if the middle adjustment interval set corresponding to an assembly point includes only one middle adjustment interval, then the only middle adjustment interval is used as the adjusted middle adjustment interval.

[0090] The above-mentioned prompt module includes a first prompt unit and a second prompt unit; wherein, when the staff takes away the torque wrench 4 in the wrench placement slot 5 on one side of the prompted inductive prompter 3, the first prompt unit controls the inductive prompter 3 to stop issuing prompt information;

[0091] When the staff puts the correct torque wrench 4 into the wrench placement slot 5, the second prompt unit controls the sensing indicator 3 on the side of the wrench placement slot 5 of the torque wrench 4 that is adapted to the next assembly point in the assembly sequence to send out a prompt message; when the staff puts the wrong torque wrench 4 into the wrench placement slot 5, the first prompt unit controls the sensing indicator 3 on the side of the wrench placement slot 5 to send out an alarm message; the second prompt unit controls the sensing indicator 3 on the side of the wrench placement slot 5 of the torque wrench 4 that is adapted to the next assembly point in the assembly sequence not to send out a prompt message.

[0092] This enables the operator to be gradually reminded to use the corresponding torque wrench 4 in order according to the assembly sequence of the assembly strategy; if an operator does not use the torque wrench 4 in the order prompted, the assembly component information and timestamp information are recorded. It may also be possible that when the operator uses the tool cart, identity information or verification information is required before it can be opened, and the personnel information is recorded to facilitate subsequent traceability.

[0093] In addition, the present invention can also adopt a torque wrench 4 with a data uploading function. When the torque wrench 4 is in use, the torque data obtained by it will be uploaded to the management platform. The management platform will compare the obtained data with the corresponding standard data to determine whether the applied torque meets the requirements, thereby avoiding the problem of poor assembly caused by improper operation of the operator, and further realizing the accuracy and standardization of the assembly process.

[0094] Moreover, the present invention can only carry out subsequent steps on the next work order after the data uploaded by the torque wrench 4 of the current work order is judged to be qualified. It can timely remind and terminate the assembly process when a problem occurs in the assembly, avoiding the problem that all subsequent assemblies need to be reworked due to a problem in a certain process assembly, avoiding the phenomenon of problem expansion in the assembly process, and ensuring the accuracy of the assembly process.

[0095] Various implementations of the systems and techniques described herein can be realized in digital electronic circuit systems, integrated circuit systems, dedicated ASICs (application specific integrated circuits), computer hardware, firmware, software, and / or combinations thereof. These various implementations may include being implemented in one or more computer programs that can be executed and / or interpreted on a programmable system including at least one programmable processor, which can be a special purpose or general purpose programmable processor that can receive data and instructions from a storage system, at least one input device, and at least one output device, and transmit data and instructions to the storage system, the at least one input device, and the at least one output device.

[0096] These computer programs (also referred to as programs, software, software applications, or code) include machine instructions for programmable processors and can be implemented using high-level procedural and / or object-oriented programming languages, and / or assembly / machine languages. As used herein, the terms "machine-readable medium" and "computer-readable medium" refer to any computer program product, device, and / or means (e.g., disk, optical disk, memory, programmable logic device (PLD)) for providing machine instructions and / or data to a programmable processor, including a machine-readable medium that receives machine instructions as machine-readable signals. The term "machine-readable signal" refers to any signal for providing machine instructions and / or data to a programmable processor.

[0097] To provide interaction with a user, the systems and techniques described herein can be implemented on a computer having: a display device (e.g., a CRT (cathode ray tube) or LCD (liquid crystal display) monitor) for displaying information to the user; and a keyboard and pointing device (e.g., a mouse or trackball) through which the user can provide input to the computer. Other types of devices can also be used to provide interaction with the user; for example, the feedback provided to the user can be any form of sensory feedback (e.g., visual feedback, auditory feedback, or tactile feedback); and input from the user can be received in any form (including acoustic input, voice input, or tactile input).

[0098] The systems and techniques described herein may be implemented in a computing system that includes back-end components (e.g., as a data server), or a computing system that includes middleware components (e.g., an application server), or a computing system that includes front-end components (e.g., a user computer with a graphical user interface or a web browser through which a user can interact with implementations of the systems and techniques described herein), or a computing system that includes any combination of such back-end components, middleware components, or front-end components. The components of the system may be interconnected by any form or medium of digital data communication (e.g., a communication network). Examples of communication networks include: a local area network (LAN), a wide area network (WAN), and the Internet.

[0099] It should be understood that the various forms of processes shown above can be used to reorder, add or delete steps. For example, the steps recorded in this application can be executed in parallel, sequentially or in different orders, as long as the expected results of the technical solution disclosed in this application can be achieved, and this document is not limited here.

[0100] The above specific implementations do not constitute a limitation on the protection scope of this application. It should be understood by those skilled in the art that various modifications, combinations, sub-combinations and substitutions can be made according to design requirements and other factors. Any modifications, equivalent substitutions and improvements made within the spirit and principles of this application should be included in the protection scope of this application.

Claims

1. A rail vehicle digital maintenance tool vehicle, characterized in that: include: Vehicle body (1); A bearing platform (2) is arranged on a vehicle body (1), the bearing platform (2) is provided with wrench placement slots (5) of different sizes, one side of each wrench placement slot (5) is provided with a sensor prompter (3), the sensor prompter (3) is used to send out prompt information; a torque wrench (4) is placed in each wrench placement slot (5), each torque wrench (4) has a torque range, each torque wrench (4) has a different torque range, and the torque range has a middle precision interval; Controller, including: An acquisition module, used for acquiring assembly component information; A first matching module is used to match an assembly strategy according to the assembly component information, wherein the assembly strategy includes each assembly point of the assembly component, an assembly sequence of each assembly point, and a torque requirement of each assembly point; The second matching module is used to match the torque ranges of all the torque wrenches (4) on the support platform (2) according to the assembly strategy to obtain a torque wrench (4) adapted to each assembly point, comprising: A. Determine whether the set of all middle precision intervals contains the torque requirements of all assembly points; B. If not, adjust the middle precise interval a based on the adjustment value n to generate the middle adjustment interval; C. Assign 1.5n to n; D. Determine whether the set of all middle adjustment intervals contains the torque requirements of all assembly points; E. If the set of all middle adjustment intervals does not include the torque requirements of all assembly points, then execute steps B, C, and D; F. If the set of all middle adjustment intervals includes the torque requirements of all assembly points, or the set of all middle precision intervals includes the torque requirements of all assembly points, then execute the step B, and generate a set of adapted middle adjustment intervals for each assembly point according to the torque requirements of each assembly point and the middle adjustment intervals of each torque wrench (4), wherein the middle adjustment interval set of each assembly point includes at least one middle adjustment interval of a torque wrench (4); G. adjusting the middle adjustment interval set of each assembly point according to the historical usage of each torque wrench (4), so that the middle adjustment interval set of each assembly point only contains the middle adjustment interval of one torque wrench (4); H. generating a torque wrench (4) adapted to each assembly point according to the adjusted middle adjustment interval set of each assembly point; The prompt module is used to control the sensor prompter (3) on one side of the wrench placement slot (5) of the torque wrench (4) corresponding to the assembly point to send prompt information in sequence according to the assembly sequence.

2. The rail vehicle digital maintenance tool vehicle according to claim 1, characterized in that: The step of adjusting the middle adjustment interval set of each assembly point according to the historical usage of each torque wrench (4) comprises: Obtaining historical usage of each torque wrench (4); Sorting each torque wrench (4) according to the historical usage of each torque wrench (4) to obtain a frequency sequence; The middle adjustment interval set of each assembly point is adjusted according to the frequency sequence so that the middle adjustment interval set of each assembly point only contains the middle adjustment interval of one torque wrench (4).

3. The rail vehicle digital maintenance tool vehicle according to claim 1, characterized in that: The historical usage includes the historical overload times x and the historical usage times y.

4. The rail vehicle digital maintenance tool vehicle according to claim 3, characterized in that: Also includes: The frequency sequence is obtained by sorting the torque wrenches (4) according to the historical usage of the torque wrenches (4), including: Generating the actual number t of each torque wrench (4) according to the historical overload number x and the historical usage number y of each torque wrench (4), wherein the actual number t=y*(1000+x^3) / 1000; The torque wrenches (4) are sorted according to the actual number t of each torque wrench (4) to obtain a frequency sequence.

5. The rail vehicle digital maintenance tool vehicle according to claim 4, characterized in that: The step of adjusting the middle adjustment interval set of each assembly point according to the historical usage of each torque wrench (4) comprises: Delete the middle adjustment intervals except those with the lowest frequency sequence in the middle adjustment interval set.

6. The rail vehicle digital maintenance tool vehicle according to claim 1, characterized in that: The prompt module includes a first prompt unit and a second prompt unit; When the staff member takes away the torque wrench (4) in the wrench placement slot (5) on one side of the prompted inductive prompter (3), the first prompting unit controls the inductive prompter (3) to stop issuing prompt information; When the staff puts the correct torque wrench (4) into the wrench placement slot (5), the second prompt unit controls the induction prompter (3) on the side of the wrench placement slot (5) of the torque wrench (4) that is adapted to the next assembly point in the assembly sequence to send a prompt message.

7. The rail vehicle digital maintenance tool vehicle according to claim 6, characterized in that: When a worker places an incorrect torque wrench (4) into the wrench placement slot (5), the first prompt unit controls the inductive indicator (3) on one side of the wrench placement slot (5) to issue an alarm message; and the second prompt unit controls the inductive indicator (3) on one side of the wrench placement slot (5) of the torque wrench (4) to be matched to the next assembly point in the assembly sequence not to issue a prompt message.

8. The rail vehicle digital maintenance tool vehicle according to claim 7, characterized in that: The induction indicator (3) comprises a processor and a weight sensor arranged at the bottom of the wrench placement slot (5), the weight sensor is used to weigh the weight of the torque wrench (4) placed in the wrench placement slot (5) and send it to the processor, and the processor is used to determine whether the weight is correct.

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