Diagonal tightening auxiliary tool

Abstract

The utility model discloses a diagonal tightening auxiliary tool which is used for assisting in tightening each to-be-tightened part on a to-be-tightened workpiece and comprises an auxiliary tool body, the auxiliary tool body comprises a diagonal tightening tool, and tightening hole sites are formed in the positions, corresponding to the to-be-tightened parts, of the diagonal tightening tool; the detection sensors and the tightening hole sites are arranged in a one-to-one correspondence mode, when a pneumatic wrench stretches into the tightening hole sites for operation, the pneumatic wrench can be detected by the detection sensors arranged corresponding to the tightening hole sites, and the detection sensors corresponding to the two tightening hole sites along the diagonal line form a group; and the controller closes the switch control valve when the pneumatic wrench triggers one detection sensor in one group, does not trigger the other detection sensor in the group and triggers any one detection sensor in the other group. According to the invention, the randomness of the screwing process of an operator is avoided, the operation can be carried out according to the standard process assembly requirement, and the reliability of the product quality is ensured.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of tooling, more particularly to a diagonal tightening auxiliary tool. BACKGROUND

[0002] In the production process of the main valve body of a railway wagon air brake valve 120, the four nuts on the main valve upper cover need to be tightened according to the diagonal tightening sequence. In the prior art, the four nuts on the main valve upper cover are tightened by a worker using a pneumatic wrench. Due to the instability of manual operation, occasionally the work is not completed according to the diagonal tightening sequence, which has a certain impact on the product quality and performance.

[0003] Therefore, how to eliminate the randomness of the tightening process of workers, ensure that they can work according to the standard process assembly requirements, and ensure the reliability of product quality is a problem to be solved by those skilled in the art. CONTENT OF THE UTILITY MODEL

[0004] Therefore, the purpose of the present application is to provide a diagonal tightening auxiliary tool to eliminate the randomness of the tightening process of workers, ensure that they can work according to the standard process assembly requirements, and ensure the reliability of product quality.

[0005] To achieve the above-mentioned purpose, the present application provides the following technical solutions:

[0006] The first aspect of the present application provides a diagonal tightening auxiliary tool for assisting in tightening each component to be tightened on a workpiece to be tightened, comprising an auxiliary tool body, wherein the auxiliary tool body comprises:

[0007] A diagonal tightening tool, wherein the diagonal tightening tool is provided with a tightening hole position corresponding to the position of the component to be tightened;

[0008] A detection sensor, wherein the detection sensor is arranged one-to-one corresponding to the tightening hole position, and when the pneumatic wrench is inserted into the tightening hole position for work, it can be detected by the detection sensor arranged corresponding to the tightening hole position, and the detection sensors corresponding to two tightening hole positions on the diagonal line form a group;

[0009] A controller, wherein when a sequence error condition is met, a switch control valve is closed, the switch control valve is a switch control valve connected between the pneumatic wrench and the air source, and the sequence error condition is that the pneumatic wrench triggers one detection sensor in a group and does not trigger another detection sensor in the group, and triggers any detection sensor in another group.

[0010] In a possible implementation manner, the switch control valve is an electromagnetic valve.

[0011] In a possible implementation, an alarm is further included, and the controller controls the alarm to alarm when the sequential error condition is met.

[0012] In a possible implementation, the four tightening hole positions are a first tightening hole position, a second tightening hole position, a third tightening hole position, and a fourth tightening hole position, the first tightening hole position and the third tightening hole position are two tightening hole positions located on a diagonal line, and the second tightening hole position and the fourth tightening hole position are two tightening hole positions located on a diagonal line.

[0013] The four detection sensors are a first detection sensor corresponding to the first tightening hole position, a second detection sensor corresponding to the second tightening hole position, a third detection sensor corresponding to the third tightening hole position, and a fourth detection sensor corresponding to the fourth tightening hole position, the first detection sensor and the third detection sensor form a group, and the second detection sensor and the fourth detection sensor form a group.

[0014] In a possible implementation, when neither of the components corresponding to the first tightening hole position and the third tightening hole position is under operation, when the pneumatic wrench is under operation by extending into one of the first tightening hole position and the third tightening hole position, and when the next operation of the pneumatic wrench is to extend into any one of the second tightening hole position and the fourth tightening hole position, the controller closes the on-off control valve.

[0015] In a possible implementation, when neither of the components corresponding to the second tightening hole position and the fourth tightening hole position is under operation, when the pneumatic wrench is under operation by extending into one of the second tightening hole position and the fourth tightening hole position, and when the next operation of the pneumatic wrench is to extend into any one of the first tightening hole position and the third tightening hole position, the controller closes the on-off control valve.

[0016] In a possible implementation, the first tightening hole position, the third tightening hole position, the second tightening hole position, and the fourth tightening hole position are an operation sequence, and when the pneumatic wrench is not operated according to the operation sequence, the controller closes the on-off control valve.

[0017] In a possible implementation, a displacement driving device is further included, and the diagonal tightening tool is arranged at an output end of the displacement driving device, and the displacement driving device is configured to drive the auxiliary tool body to move between an operation station and an avoiding station.

[0018] When the auxiliary tool body is at the operation station, each of the tightening hole positions corresponds to a component to be tightened.

[0019] When the auxiliary tool body is in the avoiding position, the auxiliary tool body avoids the part to be tightened.

[0020] In a possible implementation, a position sensor is further included, and the displacement driving device is controlled to stop when the position sensor detects the auxiliary tool body.

[0021] In a possible implementation, the displacement driving device is a rodless cylinder, and an output end of the rodless cylinder is connected with the diagonal tightening tool through a connecting block, and the connecting block slides on the tightening workbench.

[0022] In a possible implementation, the workpiece to be tightened is a main valve cover of an air brake valve, and the part to be tightened is a nut.

[0023] A nut carrying box for loading the nut is further included.

[0024] The diagonal tightening auxiliary tool provided in the application can correspond the tightening hole position of the diagonal tightening tool with the position of the part to be tightened. Before the pneumatic wrench is operated, the operator needs to manually tighten the part to be tightened on the stud of the workpiece to be tightened. Then the operator holds the pneumatic wrench through the corresponding tightening hole position, and sequentially tightens the parts to be tightened corresponding to each tightening hole position along the diagonal tightening sequence. That is, after a group of parts to be tightened on the diagonal line are tightened, the next group of parts to be tightened on the diagonal line can be tightened, otherwise the controller closes the switch control valve, so that the tightening process cannot be performed. The application eliminates the randomness of the operator in the tightening process, ensures that the operator can work according to the standard process assembly requirements, and guarantees the reliability of product quality. BRIEF DESCRIPTION OF DRAWINGS

[0025] In order to more clearly illustrate the technical solutions in the embodiments of the application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description only constitute some embodiments of the application, and for those skilled in the art, other drawings can also be obtained without creative labor based on these drawings.

[0026] Figure 1 The structural schematic diagram of the diagonal tightening auxiliary tool disclosed in the embodiments of the application;

[0027] Figure 2 The structural schematic diagram of the diagonal tightening auxiliary tool disclosed in the embodiments of the application installed on the tightening workbench at an angle;

[0028] Figure 3The structure schematic view of the diagonal tightening auxiliary tool disclosed by the embodiment of the present application is installed to the tightening workbench in another angle;

[0029] Figure 4 The rear view of the diagonal tightening auxiliary tool disclosed by the embodiment of the present application;

[0030] Figure 5 The structure schematic view of the rear part of the diagonal tightening auxiliary tool disclosed by the embodiment of the present application.

[0031] The meanings of the respective reference numerals in the drawings are as follows:

[0032] 100 - displacement driving device;

[0033] 200 - position sensor;

[0034] 300 - auxiliary tool body; 301 - tightening hole position; 3011 - first tightening hole position; 3012 - second tightening hole position; 3013 - third tightening hole position; 3014 - fourth tightening hole position; 302 - detection sensor; 3021 - first detection sensor; 3022 - second detection sensor; 3023 - third detection sensor; 3024 - fourth detection sensor; 303 - diagonal tightening tool;

[0035] 400 - connecting block;

[0036] 500 - main valve upper cover;

[0037] 600 - tightening workbench;

[0038] 700 - nut bearing box body. DETAILED DESCRIPTION

[0039] The core of the present application is to provide a diagonal tightening auxiliary tool to eliminate the randomness of the tightening process of workers, to ensure that it can work according to the standard process assembly requirements, and to ensure the reliability of product quality.

[0040] Hereinafter, the embodiments will be described with reference to the accompanying drawings. In addition, the embodiments shown below do not have any limiting effect on the application content recited in the claims. In addition, the entire content of the configuration represented in the following embodiments is not limited to what is necessary as a solution to the application recited in the claims. It should be noted that only the parts related to the application are shown in the drawings for ease of description. In the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other.

[0041] As Figures 1-5As shown, the diagonal tightening auxiliary tool disclosed in the embodiments of the present application is used to assist in tightening each component to be tightened on the workpiece to be tightened. For example, the workpiece to be tightened can be the main valve cover of an air brake valve, and the component to be tightened can be a nut. The main valve cover of the air brake valve has four studs, and four nuts need to be tightened on the four studs.

[0042] The diagonal tightening auxiliary tool disclosed in the embodiments of the present application comprises an auxiliary tool body 300, which comprises a diagonal tightening tool 303, a detection sensor 302, and a controller (not shown in the figure).

[0043] The diagonal tightening tool 303 is provided with a tightening hole site 301 corresponding to the position of the component to be tightened, that is, the number of the tightening hole site 301 and the positional relationship of each tightening hole site 301 should match the number and positional relationship of the component to be tightened. In addition, the tightening hole site 301 is provided for the gun head of the pneumatic wrench to pass through to tighten the component to be tightened, so the size of the tightening hole site 301 should ensure that the gun head of the pneumatic wrench can pass through, and the tightening hole site 301 can be designed as a circular hole in general, of course, the shape of the tightening hole site 301 can also be designed according to the needs of those skilled in the art, and is not limited to a circular shape.

[0044] The detection sensor 302 is arranged one-to-one with the tightening hole site 301, that is, one detection sensor 302 is arranged corresponding to each tightening hole site 301, and the detection sensor 302 can be a position sensor, which can be detected by the detection sensor 302 arranged corresponding to the tightening hole site 301 when the pneumatic wrench is inserted into the tightening hole site 301 to work, so as to determine which component to be tightened is tightened by the pneumatic wrench. It should be noted that the specific type of the detection sensor 302 is not limited in the embodiments, as long as it can be detected by the corresponding detection sensor 302 after the pneumatic wrench is inserted into the tightening hole site 301, in other words, the detection sensor 302 corresponding to the tightening hole site 301 can be triggered.

[0045] The detection sensors 302 corresponding to the two tightening hole positions 301 on the diagonal line form a group, for example, the detection sensors 302 corresponding to the two tightening hole positions 301 on the upper left corner and the lower right corner form a sensor group, and the detection sensors 302 corresponding to the two tightening hole positions 301 on the upper right corner and the lower left corner form a sensor group. In this embodiment, the detection sensors 302 can be used to determine which tightening component is tightened by the pneumatic wrench, so that the two tightening components on the other diagonal line can be tightened after the two tightening components on the diagonal line are tightened. In other words, the detection sensors 302 in another sensor group can be triggered only after the detection sensors 302 in a sensor group are triggered in sequence. Alternatively, when one detection sensor 302 in a sensor group is triggered and the other detection sensor 302 in the sensor group is not triggered, the detection sensors 302 in another sensor group are triggered, which indicates that the tightening is not in the order of the diagonal line.

[0046] Based on the above principle, the controller sends a warning signal when the sequence error condition is met. The sequence error condition can be that the pneumatic wrench triggers one detection sensor 302 in a group and does not trigger the other detection sensor 302 in the group, and triggers any detection sensor 302 in another group. The controller sends a warning signal, for example, closes the on-off control valve connected between the pneumatic wrench and the air source, so that the pneumatic wrench loses power and cannot complete the subsequent tightening operation. That is, when the pneumatic wrench does not complete the operation of the tightening component corresponding to the tightening hole position 301 in a group, the pneumatic wrench is inserted into the tightening hole position 301 in another group, and the controller sends a warning signal. The specific form of the warning signal is not limited, as long as it can remind the operator, so that the operator can realize that the tightening is not in the order of the diagonal line and adjust the tightening order in time.

[0047] The diagonal tightening auxiliary tool provided in the present application can correspond the tightening hole position 301 of the diagonal tightening tool to the position of the tightening component to be tightened. Before the pneumatic wrench operates, the operator needs to manually tighten the tightening component to be tightened on the stud of the workpiece to be tightened. Then the operator holds the pneumatic wrench through the corresponding tightening hole position 301, and sequentially tightens the tightening components corresponding to each tightening hole position 301 in the order of the diagonal line. That is, the next group of tightening components on the diagonal line can be tightened only after the current group of tightening components on the diagonal line are tightened, otherwise the controller sends a warning signal to remind the operator that the tightening order is wrong, for example, the controller can close the on-off control valve. The present application eliminates the randomness of the operator during tightening, ensures that the operator can work according to the standard process assembly requirements, and ensures the reliability of product quality.

[0048] In an embodiment of the present application, a switch control valve is arranged between the pneumatic wrench and the air source. When the switch control valve is cut off, the pneumatic wrench is disconnected from the air source, so that the pneumatic wrench loses power and cannot work. When the switch control valve is turned on, the pneumatic wrench is connected to the air source, so that the air source can provide power for the pneumatic wrench to complete the tightening work.

[0049] In the embodiment, the reminder signal can include: controlling the switch control valve to be cut off, i.e. closing the switch control valve. That is, in the embodiment, when the operator does not tighten the parts to be tightened in the diagonal sequence, the controller controls the switch control valve to be cut off, so that the pneumatic wrench loses power and cannot continue to work, and thus cannot perform the error sequence tightening work. When the operator tightens the parts to be tightened in the diagonal sequence, the switch control valve remains in the on state. In the embodiment, the switch control valve can be a solenoid valve.

[0050] In another embodiment of the present application, the diagonal tightening auxiliary tool can also include an alarm, and the reminder signal can include: controlling the alarm to alarm. That is, in the embodiment, when the operator does not tighten the parts to be tightened in the diagonal sequence, the controller controls the alarm to alarm, and can also close the switch control valve at the same time. The alarm can remind the operator in the form of sound or flashing light. The specific alarm mode of the alarm in the embodiment is not limited, as long as it can timely remind the operator of the tightening sequence error.

[0051] When the diagonal tightening auxiliary tool disclosed in the embodiment is applied to the air brake valve to tighten the nuts on the main valve upper cover 500, the tightening hole positions 301 should be four. In order to facilitate understanding, the four tightening hole positions 301 are defined as a first tightening hole position 3011, a second tightening hole position 3012, a third tightening hole position 3013 and a fourth tightening hole position 3014. Among them, the first tightening hole position 3011 and the third tightening hole position 3013 are two tightening hole positions located on the diagonal line, and the second tightening hole position 3012 and the fourth tightening hole position 3014 are two tightening hole positions located on the diagonal line.

[0052] Similarly, the detection sensor 302 is also four, the detection sensor 302 corresponding to the first tightening hole position 3011 is the first detection sensor 3021, the detection sensor 302 corresponding to the second tightening hole position 3012 is the second detection sensor 3022, the detection sensor 302 corresponding to the third tightening hole position 3013 is the third detection sensor 3023, and the detection sensor 302 corresponding to the fourth tightening hole position 3014 is the fourth detection sensor 3024. Then the first detection sensor 3021 and the third detection sensor 3023 form a group, and the second detection sensor 3022 and the fourth detection sensor 3024 form a group.

[0053] It should be noted that each detection sensor 302 can be fixed on the side of the diagonal tightening tool 303 facing the workpiece to be tightened through the mounting seat, so that only when the gun head of the pneumatic wrench passes through the tightening hole position 301, the detection sensor 302 can be detected, or only when the gun head of the pneumatic wrench passes through the tightening hole position 301, the detection sensor 302 can be triggered, so as to avoid the situation that the detection sensor 302 is triggered by mistake.

[0054] When the workpieces corresponding to the first tightening hole position 3011 and the third tightening hole position 3013 are not worked, and the pneumatic wrench is inserted into one of the first tightening hole position 3011 and the third tightening hole position 3013 to work, if the next work of the pneumatic wrench is inserted into any one of the second tightening hole position 3012 and the fourth tightening hole position 3014, the controller will issue a reminder signal.

[0055] For example, the pneumatic wrench is inserted into the first tightening hole position 3011 and performs tightening work on the workpiece corresponding to the first tightening hole position 3011. After completing the tightening work, the pneumatic wrench should be inserted into the third tightening hole position 3013 and perform tightening work on the workpiece corresponding to the third tightening hole position 3013, at which time the controller will not issue a reminder signal. Whether the pneumatic wrench is inserted into the second tightening hole position 3012 or the fourth tightening hole position 3014 to perform tightening work on the corresponding workpiece, the controller will issue a reminder signal.

[0056] Similarly, when the workpieces corresponding to the second tightening hole position 3012 and the fourth tightening hole position 3014 are not worked, and the pneumatic wrench is inserted into one of the second tightening hole position 3012 and the fourth tightening hole position 3014 to work, if the next work of the pneumatic wrench is inserted into any one of the first tightening hole position 3011 and the third tightening hole position 3013, the controller will issue a reminder signal.

[0057] For example, the pneumatic wrench is inserted into the second tightening hole position 3012 and performs tightening work on the workpiece corresponding to the second tightening hole position 3012. After completing the tightening work, the pneumatic wrench should be inserted into the fourth tightening hole position 3014 and perform tightening work on the workpiece corresponding to the fourth tightening hole position 3014, at which time the controller will not issue a reminder signal. Whether the pneumatic wrench is inserted into the first tightening hole position 3011 or the third tightening hole position 3013 to perform tightening work on the corresponding workpiece, the controller will issue a reminder signal.

[0058] The operator can first insert the pneumatic wrench into any one of the first tightening hole position 3011, the second tightening hole position 3012, the third tightening hole position 3013, and the fourth tightening hole position 3014 when performing the tightening operation. The present embodiment does not require the first tightening component to be tightened, and any one can be selected as the first component to be tightened. When the first component to be tightened is determined, the corresponding detection sensor 302 will be triggered, and the controller will record. At this time, the next component to be tightened is determined, and the next component to be tightened must be in the form of a diagonal line. If the pneumatic wrench is inserted into the tightening hole position corresponding to the other component to be tightened, the corresponding detection sensor 302 will be triggered, and the controller will issue a reminder signal.

[0059] When the second tightening component to be tightened is operated in the correct order, and the tightening operation of the second component to be tightened is completed, the present embodiment does not require the third tightening component to be tightened, that is, any one of the remaining components to be tightened can be selected. Similarly, when the third component to be tightened is determined, the fourth component to be tightened is also determined. For details, please refer to the foregoing, which will not be described here. In summary, when the two components to be tightened on the diagonal line are not tightened, any one of them can be selected to be tightened. When one of them is determined, the next component to be tightened is also determined.

[0060] In another embodiment of the present application, a specific operation sequence can also be determined, for example, the first tightening hole position 3011, the third tightening hole position 3013, the second tightening hole position 3012, and the fourth tightening hole position 3014 are the operation sequence. When the pneumatic wrench does not operate according to the operation sequence, the controller issues a reminder signal. That is, the operator can only perform the tightening operation in the order of the first tightening hole position 3011, the third tightening hole position 3013, the second tightening hole position 3012, and the fourth tightening hole position 3014. If the order of any one is wrong, the controller will trigger a reminder signal.

[0061] This scheme requires the operator to remember the operation sequence, for example, the operator is required to tighten the components in the order of left upper, right lower, right upper, and left lower. If the first component to be tightened is tightened, and the tightened component is any one of the right lower, right upper, and left lower, the controller will trigger a reminder signal. Similarly, if the second component to be tightened is tightened, and the tightened component is any one of the left upper, right upper, and left lower, the controller will trigger a reminder signal. The other components to be tightened can refer to the first and second components to be tightened, and will not be listed here.

[0062] When tightening the components to be tightened by the pneumatic wrench, each component to be tightened needs to be manually initially tightened on the stud of the workpiece to be tightened. A few turns can be tightened, as long as it can prevent the component to be tightened from falling off the stud.

[0063] Since the diagonal tightening auxiliary tool affects the manual tightening of the workpiece by the operator on the front side of the workpiece to be tightened, in the embodiment, the diagonal tightening auxiliary tool can be designed as a movable scheme to change the position of the diagonal tightening auxiliary tool according to the needs to facilitate the operation.

[0064] Specifically, in an embodiment of the present application, the diagonal tightening auxiliary tool can further include a displacement driving device 100, and the diagonal tightening tool 303 is arranged at the output end of the displacement driving device 100. The displacement driving device 100 is used to drive the auxiliary tool body 300 to move between the working position and the avoiding position.

[0065] When the auxiliary tool body 300 is in the working position, each tightening hole position 301 corresponds to the workpiece to be tightened. That is, when pneumatic wrench operation is needed, the auxiliary tool body 300 needs to be moved to the working position by the displacement driving device 100.

[0066] When the auxiliary tool body 300 is in the avoiding position, the auxiliary tool body 300 avoids the workpiece to be tightened. That is, when manual operation by the operator is needed, the auxiliary tool body 300 needs to be moved to the avoiding position by the displacement driving device 100. It should be noted that the avoiding position does not have a specific position requirement, as long as it can avoid the workpiece to be tightened, so that the diagonal tightening auxiliary tool does not affect the operator to preliminarily tighten the workpiece to be tightened on the stud.

[0067] Since the working position of the auxiliary tool body 300 needs to be accurately positioned, so as to ensure that each tightening hole position 301 can correspond to the workpiece to be tightened. In an embodiment of the present application, the diagonal tightening auxiliary tool can further include a position sensor 200, which can be detected when the auxiliary tool body 300 moves to the working position. When the auxiliary tool body 300 is detected by the position sensor 200, the controller controls the displacement driving device 100 to stop.

[0068] In the embodiment, a foot valve can be provided for the displacement driving device 100. By stepping on the foot valve, the displacement driving device 100 is controlled to act. The operator steps on the foot valve, and the displacement driving device 100 drives the auxiliary tool body 300 to move to the working position. After the position sensor 200 detects that the auxiliary tool body 300 is in position, the controller controls the displacement driving device 100 to stop running, and keeps the auxiliary tool body 300 in the working position.

[0069] At this time, the operator can hold the pneumatic wrench, and repeatedly tightens the four to-be-tightened components twice (the number of tightening times can be set according to requirements). In the first tightening, the operator holds the pneumatic wrench to tighten any to-be-tightened component, and after the first to-be-tightened component is tightened, the second to-be-tightened component is selected to be tightened at the opposite corner position. The third to-be-tightened component can be selected to be tightened at any one of the remaining two, and then the last to-be-tightened component at the opposite corner is tightened. In the second tightening, the above tightening rule is executed again.

[0070] In an embodiment of the present application, the displacement driving device 100 is a rodless cylinder, the output end of the rodless cylinder is connected with the diagonal tightening tool 303 through the connecting block 400, and the connecting block 400 slides on the tightening workbench 600. Correspondingly, the cylinder body of the displacement driving device 100 can be fixed on the tightening workbench 600, and the position sensor 200 can also be fixed on the tightening workbench 600.

[0071] In an embodiment of the present application, in order to facilitate the storage of the to-be-tightened components, the diagonal tightening auxiliary tool further comprises a nut bearing box 700 for loading nuts. The nut bearing box 700 can also be fixed on the tightening workbench 600, so as to be easily taken by the operator.

[0072] As shown in the present application and the claims, unless the context clearly indicates otherwise, the words "one", "an", "a", and / or "the" do not mean a single number, but can also include a plurality. Generally, the terms "comprise" and "include" only indicate that the steps and elements explicitly identified are included, and these steps and elements do not constitute an exclusive list, and the method or device can also include other steps or elements. The element defined by the statement "comprises a" does not exclude the presence of another identical element in the process, method, product or device comprising the element.

[0073] In the description of the present application, unless otherwise explicitly limited, the words such as arrangement, installation, connection, etc. should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meaning of the above words in the present application in combination with the specific content of the technical solution.

[0074] The embodiments in the specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the embodiments can be mutually referred to.

[0075] The principles and implementations of the present application are described in detail with specific examples in this paper, and the above examples are only used to help understand the method of the present application and its core idea. It should be pointed out that for ordinary skilled persons in the technical field, some improvements and modifications can be made without departing from the principles of the present application, and these improvements and modifications also fall within the protection scope of the claims of the present application.

Claims

1. A diagonal tightening assisting tool characterized by comprising: A tool for assisting tightening of each component to be tightened on a workpiece to be tightened, comprising an assisting tool body (300), the assisting tool body (300) comprising: a diagonal tightening tool (303) having a tightening hole (301) corresponding to the position of the component to be tightened; a detection sensor (302) arranged one-to-one corresponding to the tightening hole (301), capable of being detected by the detection sensor (302) arranged corresponding to the tightening hole (301) when the pneumatic wrench is inserted into the tightening hole (301) for operation, the detection sensors (302) corresponding to two tightening holes (301) on the diagonal are a group; a controller, when a sequence error condition is met, a switch control valve is closed, the switch control valve is a switch control valve connected between the pneumatic wrench and the gas source, the sequence error condition is that the pneumatic wrench triggers one of the detection sensors (302) in a group, and does not trigger the other detection sensor (302) in the group, and triggers any one of the detection sensors (302) in another group.

2. The corner tightening aid tool of claim 1, wherein, The switch control valve is a solenoid valve.

3. The corner tightening aid tool of claim 1, wherein, Further comprising an alarm, when the sequence error condition is met, the controller controls the alarm to alarm.

4. The corner tightening aid tool of claim 1, wherein, The tightening hole (301) is four, which is a first tightening hole (3011), a second tightening hole (3012), a third tightening hole (3013) and a fourth tightening hole (3014), the first tightening hole (3011) and the third tightening hole (3013) are two tightening holes on the diagonal, the second tightening hole (3012) and the fourth tightening hole (3014) are two tightening holes on the diagonal; The detection sensor (302) is four, the detection sensor (302) corresponding to the first tightening hole (3011) is a first detection sensor (3021), the detection sensor (302) corresponding to the second tightening hole (3012) is a second detection sensor (3022), the detection sensor (302) corresponding to the third tightening hole (3013) is a third detection sensor (3023), and the detection sensor (302) corresponding to the fourth tightening hole (3014) is a fourth detection sensor (3024), the first detection sensor (3021) and the third detection sensor (3023) are a group, and the second detection sensor (3022) and the fourth detection sensor (3024) are a group.

5. The corner tightening aid tool of claim 4, wherein, When neither of the first tightening hole (3011) and the third tightening hole (3013) corresponding components to be tightened is operated, when the pneumatic wrench is inserted into one of the first tightening hole (3011) and the third tightening hole (3013) for operation, if the next operation of the pneumatic wrench is inserted into any one of the second tightening hole (3012) and the fourth tightening hole (3014), the controller closes the switch control valve; When the second tightening hole (3012) and the fourth tightening hole (3014) correspond to the parts to be tightened, and none of the parts to be tightened is operated, when the pneumatic wrench is inserted into one of the second tightening hole (3012) and the fourth tightening hole (3014) to operate, and the next operation of the pneumatic wrench is inserted into any one of the first tightening hole (3011) and the third tightening hole (3013), the controller closes the switch control valve.

6. The corner tightening aid tool of claim 4, wherein, The first tightening hole (3011), the third tightening hole (3013), the second tightening hole (3012) and the fourth tightening hole (3014) are operation sequences, and when the pneumatic wrench does not operate according to the operation sequence, the controller closes the switch control valve.

7. Diagonal tightening aid according to any of claims 1-6, characterized in that Further comprising a displacement driving device (100), the diagonal tightening tool (303) is arranged at the output end of the displacement driving device (100), and the displacement driving device (100) is used to drive the auxiliary tool body (300) to move between the operation station and the avoiding station. When the auxiliary tool body (300) is at the operation station, each of the tightening holes (301) corresponds to the parts to be tightened one by one. When the auxiliary tool body (300) is at the avoiding station, the auxiliary tool body (300) avoids the parts to be tightened.

8. The corner tightening aid tool of claim 7, wherein, Further comprising a position sensor (200), which can detect that the auxiliary tool body (300) moves to the operation station, and when the position sensor (200) detects the auxiliary tool body (300), the controller controls the displacement driving device (100) to stop.

9. The corner tightening aid tool of claim 7, wherein, The displacement driving device (100) is a rodless cylinder, the output end of the rodless cylinder is connected with the diagonal tightening tool (303) through a connecting block (400), and the connecting block (400) slides on a tightening workbench (600).

10. The diagonal tightening aid tool according to any one of claims 1 to 6, wherein The parts to be tightened are the main valve cover (500) of the air brake valve, and the parts to be tightened are the screw cap. Further comprising a screw cap bearing box (700) for loading the screw cap.

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