AMT interlocking device testing fixture

Abstract

The utility model relates to the technical field of mechanical transmission testing fixtures. The AMT interlocking device testing fixture comprises a main body and a pin. The main body comprises a first part, a second part and a connecting part; the first component is provided with a containing channel which extends along a straight line, and the first component is further provided with a first pin hole which is communicated with the containing channel. One end of the pin is inserted into the accommodating channel from the first pin hole or penetrates through the accommodating channel, the other end of the pin is limited outside the first pin hole and the accommodating channel, and the pin is in clearance fit with the first pin hole; a first groove body is formed in the extension part; the hole center line of the first pin hole and the center line of the first groove body are parallel to each other and are spaced by a preset distance. The technical problem existing in the prior art that whether a first-stage groove body and a second-stage groove hole can be aligned or not can be detected in advance through a detection tool after a front auxiliary box air cylinder, a main box R / 1 gear air cylinder, a main box 2 / 3 gear air cylinder and a rear auxiliary box air cylinder are assembled and before a front auxiliary shifting fork and an elastic pin are assembled is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of mechanical transmission inspection tools, in particular to an AMT interlocking device inspection tool. Background Art

[0002] AMT is the abbreviation of Automated Mechanical Transmission. Its Chinese name is literally translated as automatic mechanical transmission. It is also called electronically controlled mechanical automatic transmission. This technology refers to the automation of the entire gear shifting process by adding a microcomputer-controlled electric device to replace the gear shifting action originally performed manually without changing the main structure of the original gearbox. Among them, the gear selector actuator is an important component of AMT.

[0003] The shift selector actuator is mainly composed of the front auxiliary box cylinder, the main box R / 1 gear cylinder, the main box 2 / 3 gear cylinder and the rear auxiliary box cylinder. Each cylinder corresponds to a different gear position. The front auxiliary box cylinder includes the front auxiliary box shift shaft. The shift selector actuator also includes the front auxiliary fork and elastic pin. The shift selector actuator usually corresponds to an external climbing frame.

[0004] In the prior art, generally, during assembly, first, assemble the front auxiliary box cylinder, the main box R / 1 gear cylinder, the main box 2 / 3 gear cylinder, and the rear auxiliary box cylinder; then, assemble the front auxiliary shift fork and the elastic pin. Specifically, a first channel and a primary pin hole are provided at one end of the front auxiliary shift fork, wherein the primary pin hole is communicated with the first channel and is at a right angle, and a secondary pin hole is provided at one end of the front auxiliary box shift shaft. The first channel is inserted into the end of the front auxiliary box shift shaft with the secondary pin hole, and the channel inner wall of the first channel is transitionally matched with the outer surface of the front auxiliary box shift shaft. Then, push the front auxiliary shift fork axially, and visually inspect the center line of the primary pin hole and the secondary pin hole. The center lines of the holes are approximately coaxial, and then the elastic pin is inserted into the primary pin hole and the secondary pin hole, and the outer surfaces of the elastic pin are respectively interference fit with the hole walls of the primary pin hole and the secondary pin hole; the other end of the front auxiliary fork is provided with a primary slot body, and the external climbing frame is provided with a secondary slot hole. After the above-mentioned assembly process is completed, if the tolerance dimension chain meets the preset requirements, the primary slot body and the secondary slot hole are aligned at this time, that is, the center line of the primary slot body coincides with the center line of the secondary slot hole or is separated by a preset distance, and also includes an interlocking pin, which is inserted into the primary slot body and the secondary slot hole, so that an interlocking relationship is formed between the front auxiliary fork and the external climbing frame through the interlocking pin.

[0005] However, in the actual assembly process, if the tolerance dimension chain formed after the front auxiliary box cylinder, main box R / 1 gear cylinder, main box 2 / 3 gear cylinder and rear auxiliary box cylinder are assembled does not meet the subsequent assembly conditions, the subsequent assembly of the front auxiliary fork and elastic pin will easily cause the primary slot body and the secondary slot hole to be unable to align, and the interlocking pin is difficult to insert into the primary slot body and the secondary slot hole at the same time, which will lead to the inability to form an interlocking relationship between the front auxiliary fork and the external climbing frame through the interlocking pin. It is necessary to rework, remove the front auxiliary fork and elastic pin, and readjust the assembly dimensions of the front auxiliary box cylinder, main box R / 1 gear cylinder, main box 2 / 3 gear cylinder and rear auxiliary box cylinder.

[0006] Furthermore, it is mentioned in the aforementioned content that after assembly, the outer surface of the elastic pin is respectively interference fit with the hole wall of the primary pin hole and the hole wall of the secondary pin hole. If the elastic pin is removed at this time, it will be necessary to overcome the large friction between the elastic pin and the hole wall of the primary pin hole and the hole wall of the secondary pin hole, and it is also easy to cause the surface of the elastic pin to be scratched or even deformed by friction. Usually, the removed elastic pin cannot be used a second time and has to be scrapped; and, it is mentioned in the aforementioned content that the end of the front auxiliary box shift shaft with the secondary pin hole forms a transition fit with the first channel. If the front auxiliary shift fork is removed again, the operator is likely to encounter problems such as the first channel of the front auxiliary shift fork being difficult to separate from the end of the front auxiliary box shift shaft with the secondary pin hole.

[0007] Therefore, it is very necessary to use a checking fixture to pre-check whether the primary slot body of the front auxiliary fork and the secondary slot hole of the external climbing frame are aligned after the front auxiliary box cylinder, main box R / 1 gear cylinder, main box 2 / 3 gear cylinder and rear auxiliary box cylinder are assembled, and before the front auxiliary fork and elastic pin are assembled. The primary slot body and the secondary slot hole are aligned, that is, the center line of the primary slot body and the center line of the secondary slot hole are on the same straight line, or are parallel to each other and have a preset distance. The preset distance is configured according to the specific working conditions, and the specific value is not given here.

[0008] Therefore, the utility model proposes an AMT interlocking device inspection tool. Utility Model Content

[0009] In view of the technical problem in the prior art of how to use a checking fixture to pre-check whether the primary slot body and the secondary slot hole can be aligned after the front auxiliary box cylinder, the main box R / 1 gear cylinder, the main box 2 / 3 gear cylinder and the rear auxiliary box cylinder are assembled and before the front auxiliary fork and the elastic pin are assembled, the utility model provides an AMT interlocking device checking fixture.

[0010] The utility model is realized by the following technical solutions:

[0011] An AMT interlocking device check fixture comprises a main body and a pin;

[0012] The main body comprises a first component, a second component and a connecting component, wherein two ends of the connecting component are respectively connected to the first component and the second component;

[0013] The first component is provided with a receiving channel, the receiving channel extends in a straight line, the inner diameter of the receiving channel is configured as a preset inner diameter, and the first component is further provided with a first pin hole, the first pin hole is communicated with the receiving channel, and the extension direction of the first pin hole points to the receiving channel;

[0014] The pin rod of the pin is inserted from the first pin hole into the receiving channel or penetrates the receiving channel, the pin head is restricted outside the first pin hole and the receiving channel, and the pin is loosely matched with the first pin hole; or the pin is separated from the first pin hole and the receiving channel respectively, and the pin is located outside the first pin hole and the receiving channel;

[0015] The second component is provided with an extension portion, the extension direction of the extension portion is parallel to the extension direction of the accommodating channel, the extension portion is provided with a first groove body, the groove of the first groove body is located on the side of the second component away from the first component, and the first groove body is recessed from the side of the second component away from the first component toward the direction of the accommodating channel;

[0016] The center line of the first slot body 9 and the center line of the first pin hole 7 are parallel to each other and are spaced apart by a preset distance.

[0017] Furthermore, a first plane is provided on the first component, and an opening of one end of the first pin hole away from the accommodating channel is provided on the first plane;

[0018] The nail head of the pin can abut against the first plane and pass through the first plane to be restricted outside the first pin hole and the accommodating channel.

[0019] Furthermore, a second plane is provided on a side of the extension portion facing away from the first component, and the notch of the first slot body is located on the second plane.

[0020] Furthermore, the connecting component extends along an arc curve.

[0021] Furthermore, the first groove body is a V-shaped groove.

[0022] Compared with the prior art, the advantages of the present invention are:

[0023] 1. In the present invention, an AMT interlocking device inspection fixture is proposed, which is used to simulate the pre-installation of a front auxiliary fork and an elastic pin, wherein the accommodating channel extends along a straight line, the extending direction of the first pin hole points to the accommodating channel, and the center line of the first slot body and the hole center line of the first pin hole are parallel to each other and are separated by a preset spacing K; in the present invention, after the front auxiliary box cylinder, the main box R / 1 gear cylinder, the main box 2 / 3 gear cylinder, and the rear auxiliary box cylinder are assembled, and before the front auxiliary fork and the elastic pin are assembled, the AMT interlocking device inspection fixture is pre-installed to detect in advance whether the primary slot body and the secondary slot hole are aligned. If aligned, the inspection fixture is removed and the front auxiliary fork and the elastic pin are continued to be installed. If not aligned, the sizes of other components are readjusted; the technical problem existing in the prior art of how to use the inspection fixture to pre-detect whether the primary slot body and the secondary slot hole are aligned after the front auxiliary box cylinder, the main box R / 1 gear cylinder, the main box 2 / 3 gear cylinder, and the rear auxiliary box cylinder are assembled and before the front auxiliary fork and the elastic pin are assembled is solved.

[0024] Furthermore, in the present invention, the inner diameter of the accommodating channel is configured to be slightly larger than the inner diameter of the first channel, so that a clearance fit is formed between the inner wall of the accommodating channel and the outer surface of the front auxiliary box shift shaft, thereby reducing the friction between the inner wall of the accommodating channel and the outer surface of the front auxiliary box shift shaft; and the cross-sectional diameter of the pin is slightly smaller than the cross-sectional diameter of the elastic pin, so that after the pin is inserted into the accommodating channel or penetrates the accommodating channel, it can form a clearance fit with the first pin hole and the secondary pin hole respectively, thereby reducing the friction between the outer surface of the pin and the first pin hole and the secondary pin hole; as a result, during the use of the inspection tool of the present invention, the wear of the inner wall of the accommodating channel of the inspection tool and the wear of the outer surface of the pin are reduced, and the inspection tool of the present invention can be reused many times and has a long service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the assembly of the front auxiliary shift fork, elastic pin and front auxiliary gearbox shift shaft of the background technology;

[0026] Figure 2 This is a schematic diagram of the structure of the AMT interlocking device inspection fixture of the utility model;

[0027] Figure 3 for Figure 1 A schematic diagram of the structure from another perspective;

[0028] Figure 4 This is a schematic diagram of the assembly of the AMT interlocking device inspection fixture and the front auxiliary gearbox shift shaft;

[0029] Figure 5 for Figure 4 AA direction cross-sectional view;

[0030] Figure 6 This is a schematic diagram of the installation process of the AMT interlocking device inspection fixture;

[0031] Figure 7 for Figure 6 Magnified view of area A.

[0032] The numbers in the figure are: main body (1), first component (2), second component (3), connecting component (4), pin (5), accommodating channel (6), first pin hole (7), extension part (8), first groove body (9), second plane (10), first plane (11). DETAILED DESCRIPTION

[0033] The following is a further non-restrictive detailed description of the utility model technical solution in conjunction with the preferred embodiment and its accompanying drawings. In the description of the utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate the orientation or position relationship based on the orientation or position relationship shown in the accompanying drawings. In addition, the terms "first" and "second" are used only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the utility model, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the utility model, and cannot be understood as limitations on the utility model.

[0034] like Figure 2 to Figure 4As shown, a preferred embodiment of the utility model is an AMT interlocking device inspection tool, referred to as the inspection tool, which includes a main body 1 and a pin 5; the main body 1 includes a first component 2, a second component 3 and a connecting component 4, wherein the two ends of the connecting component 4 are respectively connected to the first component 2 and the second component 3; the first component 2 is provided with a receiving channel 6, the receiving channel 6 extends along a straight line, and the inner diameter of the receiving channel 6 is configured as a preset inner diameter, and the first component 2 is also provided with a first pin hole 7, the first pin hole 7 is communicated with the receiving channel 6, and the extension direction of the first pin hole 7 points to the receiving channel 6; the nail rod of the pin 5 is inserted into the receiving channel 6 from the first pin hole 7 or penetrates the receiving channel 6, and the nail of the pin 5 The head is restricted outside the first pin hole 7 and the accommodating channel 6, and the pin 5 is loosely matched with the first pin hole 7; or, the pin 5 is separated from the first pin hole 7 and the accommodating channel 6 respectively, and the pin 5 is located outside the first pin hole 7 and the accommodating channel 6; the second component 3 is provided with an extension portion 8, and the extension direction of the extension portion 8 is parallel to the extension direction of the accommodating channel 6, and the extension portion 8 is provided with a first groove body 9, and the groove of the first groove body 9 is located on the side of the second component 3 away from the first component 2, and the first groove body 9 is recessed from the side of the second component 3 away from the first component 2 toward the direction of the accommodating channel 6; the center line of the first groove body 9 and the hole center line of the first pin hole 7 are parallel to each other and are separated by a preset spacing K.

[0035] The shape of the main body 1 is configured to be similar to the shape of the front auxiliary fork in the background technology. The main body 1 is used to simulate the front auxiliary fork. In this embodiment, the front auxiliary fork is pre-assembled by assembling the main body 1 having a shape similar to that of the front auxiliary fork; preferably, the connecting component 4 extends along an arc curve and is similar to the shape of the middle part of the front auxiliary fork.

[0036] Furthermore, the accommodating channel 6 on the first component 2 is equivalent to the first channel on the front auxiliary shift fork, and the inner diameter of the accommodating channel 6 is configured as a preset inner diameter. The size of the preset inner diameter is slightly larger than the channel inner diameter of the first channel, and its specific value can be configured according to actual conditions. The purpose of such a setting is to form a clearance fit between the channel inner wall of the accommodating channel 6 and the outer surface of the front auxiliary box shift shaft when the inspection fixture of this embodiment is assembled, thereby reducing the friction between the channel inner wall of the accommodating channel 6 and the outer surface of the front auxiliary box shift shaft. The inspection personnel only need to use a small external force to make the accommodating channel 6 sleeved on the front auxiliary box shift shaft or separated from the front auxiliary box shift shaft.

[0037] Furthermore, the first pin hole 7 on the first component 2 is equivalent to the primary pin hole on the front auxiliary fork, and the size and structure of the first pin hole 7 are the same as those of the primary pin hole.

[0038] Furthermore, a first plane 11 is provided on the first component 2, and an opening of the first pin hole 7 at one end facing away from the accommodating channel 6 is provided on the first plane 11; the nail head of the pin 5 can abut against the first plane 11 and be restricted outside the first pin hole 7 and the accommodating channel 6 by the first plane 11.

[0039] Preferably, in the present embodiment, the extension portion 8 is configured as a rod-shaped structure; preferably, a second plane 10 is provided on the side of the extension portion 8 facing away from the first component 2, and the notch of the first slot body 9 is located on the second plane 10. The second plane 10 is formed by removing part of the material on one side of the extension portion 8 to avoid an external climbing frame.

[0040] Furthermore, the shape and size of the first groove body 9 are configured to be consistent with or similar to the primary groove body in the background art. Preferably, the first groove body 9 is a V-shaped groove.

[0041] Furthermore, the value of the preset spacing K is equal to the spacing between the center line of the primary pin hole and the center of the primary slot body.

[0042] like Figure 4-5 As shown, the structure of the pin 5 is configured to be similar to the elastic pin structure in the background technology, and the cross-sectional diameter of the pin 5 is slightly smaller than the cross-sectional diameter of the elastic pin. The purpose is that after the pin 5 is inserted into the accommodating channel 6 or penetrates the accommodating channel 6, it can form a clearance fit with the first pin hole 7 and the secondary pin hole respectively, thereby reducing the friction between the outer surface of the pin 5 and the hole wall of the first pin hole 7 and the hole wall of the secondary pin hole, making it easier to insert the pin into the first pin hole 7 and the secondary pin hole, and after the detection is completed, it is easier to pull the pin out of the first pin hole 7 and the secondary pin hole.

[0043] Reference Figure 6-7When in use, after the front auxiliary box cylinder, the main box R / 1 gear cylinder, the main box 2 / 3 gear cylinder, and the rear auxiliary box cylinder have all been assembled, the AMT interlocking device inspection fixture of this embodiment is used for inspection. For the sake of convenience, the AMT interlocking device inspection fixture of this embodiment is referred to as the inspection fixture; first, move the inspection fixture so that the accommodating channel 6 is sleeved on the end of the front auxiliary box shift shaft with the secondary pin hole, and move the inspection fixture left and right until the inspection personnel visually align the first pin hole 7 with the secondary pin hole, and then insert one end of the pin 5 into the first pin hole 7 and the secondary pin hole, and then, rotate the second component 3 around the front auxiliary box shift shaft until the extension 8 fits with one side of the external climbing frame or leaves a preset gap, and penetrate the interlocking pin through the secondary slot hole. If the interlocking pin can be smoothly inserted into the first slot body 9 and does not interfere with the extension part 8, it means that after the front auxiliary shift fork and the elastic pin are assembled, the center line of the primary slot body and the secondary The center lines of the slot holes are on the same straight line, or parallel to each other and at a preset distance. Pull out the interlocking pin and pin 5, remove the inspection fixture, and continue to install the front auxiliary fork and elastic pin according to the original normal process. Finally, insert the interlocking pin into the primary slot body and the secondary slot hole, so that an interlocking relationship is formed between the front auxiliary fork and the external climbing frame through the interlocking pin; if the interlocking pin cannot be smoothly inserted into the first slot body 9 after penetrating the secondary slot hole, and interferes with the extension part 8, it means that after the front auxiliary fork and the elastic pin are assembled, the center line of the primary slot body and the center line of the secondary slot hole cannot meet the conditions of being on the same straight line, or parallel to each other and at a preset distance. At this time, the interlocking pin and pin 5 should be pulled out, the inspection fixture should be removed, and the relative positions of the front auxiliary box cylinder, the main box R / 1 gear cylinder, the main box 2 / 3 gear cylinder, and the rear auxiliary box cylinder should be further readjusted. After adjustment, the inspection fixture should be used again for inspection until it is qualified.

[0044] In this embodiment, an AMT interlocking device inspection fixture is proposed, which is used to simulate the pre-installation of the front auxiliary fork and the elastic pin, wherein the accommodating channel 6 extends along a straight line, the extension direction of the first pin hole 7 points to the accommodating channel 6, and the center line of the first slot body 9 and the hole center line of the first pin hole 7 are parallel to each other and are separated by a preset spacing K; in this embodiment, after the front auxiliary box cylinder, the main box R / 1 gear cylinder, the main box 2 / 3 gear cylinder, and the rear auxiliary box cylinder are assembled, and before the front auxiliary fork and the elastic pin are assembled, the AMT interlocking device inspection fixture is pre-installed to detect in advance whether the primary slot body and the secondary slot hole are aligned. If aligned, the inspection fixture is removed and the front auxiliary fork and the elastic pin are continued to be installed. If not aligned, the sizes of other components are readjusted; the technical problem existing in the prior art of how to use the inspection fixture to pre-detect whether the primary slot body and the secondary slot hole are aligned after the front auxiliary box cylinder, the main box R / 1 gear cylinder, the main box 2 / 3 gear cylinder, and the rear auxiliary box cylinder are assembled and before the front auxiliary fork and the elastic pin are assembled is solved.

[0045] Furthermore, in the present embodiment, the inner diameter of the accommodating channel 6 is configured to be slightly larger than the inner diameter of the first channel, so that a clearance fit is formed between the inner wall of the accommodating channel 6 and the outer surface of the front auxiliary box shift shaft, thereby reducing the friction between the inner wall of the accommodating channel 6 and the outer surface of the front auxiliary box shift shaft; and the cross-sectional diameter of the pin 5 is slightly smaller than the cross-sectional diameter of the elastic pin, and after the pin 5 is inserted into the accommodating channel 6 or penetrates the accommodating channel 6, it can form a clearance fit with the first pin hole 7 and the secondary pin hole respectively, thereby reducing the friction between the outer surface of the pin 5 and the first pin hole 7 and the secondary pin hole; as a result, during the use of the inspection tool of the present embodiment, the wear of the inner wall of the accommodating channel 6 of the inspection tool and the wear of the outer surface of the pin 5 are reduced, and the inspection tool of the present embodiment can be reused many times and has a long service life.

[0046] The above embodiments only express several implementation methods of the utility model, and the descriptions are relatively specific and detailed, but they cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. An AMT interlocking device inspection fixture, characterized in that: It comprises a main body (1) and a pin (5); The main body (1) comprises a first component (2), a second component (3) and a connecting component (4), wherein two ends of the connecting component (4) are respectively connected to the first component (2) and the second component (3); The first component (2) is provided with a receiving channel (6), the receiving channel (6) extends in a straight line, the inner diameter of the receiving channel (6) is configured as a preset inner diameter, the first component (2) is further provided with a first pin hole (7), the first pin hole (7) is communicated with the receiving channel (6), and the extension direction of the first pin hole (7) points to the receiving channel (6); The nail rod of the pin (5) is inserted from the first pin hole (7) into the accommodating channel (6) or penetrates the accommodating channel (6), the nail head of the pin (5) is restricted outside the first pin hole (7) and the accommodating channel (6), and the pin (5) and the first pin hole (7) are loosely matched; or the pin (5) and the first pin hole (7) and the accommodating channel (6) are separated respectively, and the pin (5) is located outside the first pin hole (7) and the accommodating channel (6); The second component (3) is provided with an extension portion (8), the extension direction of the extension portion (8) is parallel to the extension direction of the accommodating channel (6), the extension portion (8) is provided with a first groove body (9), the groove opening of the first groove body (9) is located on a side of the second component (3) away from the first component (2), and the first groove body (9) is recessed from the side of the second component (3) away from the first component (2) toward the accommodating channel (6); The center line of the first slot body (9) and the center line of the first pin hole (7) are parallel to each other and are spaced apart by a preset distance.

2. The AMT interlocking device gauge according to claim 1, characterized in that: A first plane (11) is provided on the first component (2), and an opening of an end of the first pin hole (7) facing away from the accommodating channel (6) is provided on the first plane (11); The pin head of the pin (5) can abut against the first plane (11) and be restricted outside the first pin hole (7) and the accommodating channel (6) by the first plane (11).

3. The AMT interlocking device gauge according to claim 1, characterized in that: A second plane (10) is provided on a side of the extension portion (8) facing away from the first component (2), and the notch of the first slot body (9) is located on the second plane (10).

4. The AMT interlocking device gauge according to claim 1, characterized in that: The connecting part (4) extends along an arc-shaped curve.

5. The AMT interlocking device gauge according to claim 1, characterized in that: The first groove body (9) is a V-shaped groove.

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