CN210180686U - Ball head ejector pin device and shifting fork detector - Google Patents
Ball head ejector pin device and shifting fork detector Download PDFInfo
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- CN210180686U CN210180686U CN201921530477.5U CN201921530477U CN210180686U CN 210180686 U CN210180686 U CN 210180686U CN 201921530477 U CN201921530477 U CN 201921530477U CN 210180686 U CN210180686 U CN 210180686U
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Abstract
The utility model discloses a shifting fork detector and a ball head ejector pin device, wherein the ball head ejector pin device is of a split structure and comprises a positioning pin rod, a fastening nut and a ball body; the first end of the positioning pin rod is provided with the ball body, and the ball body is fixed through the fastening nut. By adopting the structure, when the ball body needs to be replaced due to the damage of the impact in the detection process, only the ball body needs to be replaced, and the positioning pin rod and the fastening nut can still be continuously used, so that the cost is greatly reduced. In addition, the ball body can be directly purchased, the cost is lower, and the manufacturing time is saved; for the positioning pin rod and the fastening nut, the material quality and the processing method can correspondingly reduce the requirements, and meanwhile, the requirements on the processing precision are lower except for the key matching part, so that the manufacturing cost and the manufacturing difficulty of parts are integrally reduced.
Description
Technical Field
The utility model relates to the technical field of vehicles, concretely relates to bulb knock pin device and use the shift fork detector of bulb knock pin device.
Background
The shift fork is the last part of motor transmission, mainly used shifts gears, in the DCT gearbox of car, promote shift fork rod tip through hydraulic pressure, drive the shift fork and shift gears, when the car is in a certain gear, the position of shift fork must keep unchanged, otherwise cause the vehicle to damage easily and even take place the accident, generally, the shift fork is realized through the arc concave surface of its locating plate and the spheroid inlay card that corresponds of keeping off the position, consequently, the distance between the arc concave surface of the locating plate of shift fork and shift fork prong upper surface should be corresponding design size, in order to ensure that the shift fork can keep at corresponding fender position.
Therefore, after the shifting fork is manufactured, the distance between the center of the arc-shaped concave surface of the positioning plate and the upper surface of the fork leg of the shifting fork needs to be detected.
In order to achieve a long service life, the entire shift fork is generally manufactured from a high-quality steel material and subjected to post-heat treatment, so that the processing cost is high, the processing time is long, and the difficulty is high. The bulb portion of bulb knock pin device often bears the striking when detecting, therefore bulb portion is the wearing and tearing of colliding with very easily, also needs whole change when changing after the wearing and tearing, and the replacement cost is high, wastes time and energy.
In conclusion, a novel ball head ejector pin device which is lower in manufacturing cost, lower in manufacturing difficulty and simpler and more convenient to replace is urgently needed.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problem, the utility model provides a ball head ejector pin device which is used for positioning a shifting fork to be detected, and the ball head ejector pin device is of a split structure and comprises a positioning pin rod, a fastening nut and a ball body; the first end of the positioning pin rod is provided with the ball body, and the ball body is fixed through the fastening nut.
The ball head ejector pin device of the utility model adopts a split structure, and divides the original integrated structure into three relatively independent parts, namely a positioning pin rod, a fastening nut and a ball body, and the ball body is relatively fixed with the positioning pin rod through the fastening nut; like this, when the spheroid need be changed because of the impaired time of striking in the testing process, only need change the spheroid can, the locating pin pole still can continue to use with tight set nut, so, greatly reduced the cost. In addition, the ball body can be directly purchased, the cost is lower, and the manufacturing time is saved; for the positioning pin rod and the fastening nut, the material quality and the processing method can correspondingly reduce the requirements, and meanwhile, the requirements on the processing precision are lower except for the key matching part, so that the manufacturing cost and the manufacturing difficulty of parts are integrally reduced.
Optionally, the to-be-detected shifting fork comprises a shifting fork rod, a shifting fork pin and a positioning plate; the shifting fork rod, the shifting fork foot and the positioning plate are fixedly connected together, the positioning plate is provided with an arc-shaped concave surface, and the ball body is matched with the arc-shaped concave surface of the positioning plate.
Optionally, the whole locating pin rod is stepped and comprises a first shaft part, a second shaft part and a third shaft part which are connected in sequence, the diameter of the second shaft part is smaller than that of the first shaft part, and the diameter of the third shaft part is smaller than that of the second shaft part.
Optionally, a thread is arranged on the second shaft portion and is in threaded connection with the tightening nut, and the third shaft portion is in interference fit with the tightening nut.
Optionally, the second shaft portion is provided with a positioning pin hole, the fastening nut is also provided with a positioning pin hole, and the second shaft portion is matched with the fastening nut hole shaft and fixed by a positioning pin.
Optionally, the ball is located between the positioning pin rod and the fastening nut, and an end surface of the third shaft portion of the positioning pin rod is a concave arc surface matched with the ball; the inner hole of the fastening nut is provided with a spherical matching area matched with the ball body, and the concave arc surface and the spherical matching area clamp the ball body together.
Optionally, the center of the concave arc surface is located on the central axis of the dowel bar, and the center of the spherical matching area is located on the central axis of the dowel bar.
The sphere fixing mode can fix the sphere and ensure that the sphere center of the sphere is positioned on the central axis of the positioning pin rod, and the position of the sphere does not need to be further corrected when the ball head ejector pin device is used, so that the use is more convenient.
The utility model also provides a shift fork detector, including supporting seat, application of force mechanism and above arbitrary the bulb knock pin device, bulb knock pin device is installed on the supporting seat, the supporting seat with dowel bar sliding fit, application of force mechanism is located the second tip of dowel bar.
Since the ball top pin device has the technical effects, the shifting fork detector comprising the ball top pin device also has corresponding technical effects, and the details are not repeated herein.
Optionally, the force application mechanism is a hydraulic cylinder, an air cylinder or a motor.
Drawings
Fig. 1 is a schematic structural diagram of a shift fork detector according to an embodiment of the present invention;
FIG. 2 is a schematic view of the ball nose pinning assembly of FIG. 1;
FIG. 3 is a schematic view of the dowel of FIG. 2;
FIG. 4 is a partial schematic structural view of the fork to be detected in FIG. 1;
FIG. 5 is a front view of the set nut of FIG. 2;
figure 6 is a right side view of the set nut of figure 2.
The reference numerals in fig. 1-6 are illustrated as follows:
1, mounting a main body, 11 a base, 12 a support piece, 13 a detection tool and 14 a bearing;
2 ball nose pin ejector, 21 dowel bar, 211 first shaft, 212 second shaft, 213 third shaft, 22 fastening nut, 221 fastening nut bore, 221a first area, 221b second area, 221c third area, 23 ball;
3 a shifting fork to be detected, a 31 positioning plate, a 311 arc concave surface, a 32 shifting fork rod and a 33 shifting fork pin.
Detailed Description
In order to make those skilled in the art better understand the technical solution of the present invention, the present invention will be further described in detail with reference to the accompanying drawings and specific embodiments.
The terms "first", "second", and the like, as used herein are used for convenience only to describe two or more structures or components that are the same or similar in structure, and do not denote any particular limitation on the order.
Referring to fig. 1-6, fig. 1 is a schematic structural diagram of a shift fork detector according to an embodiment of the present invention; FIG. 2 is a schematic view of the ball nose pinning assembly of FIG. 1; FIG. 3 is a schematic view of the dowel of FIG. 2; FIG. 4 is a partial schematic structural view of the fork to be detected in FIG. 1; FIG. 5 is a front view of the set nut of FIG. 2; figure 6 is a right side view of the set nut of figure 2.
As shown in fig. 2, the utility model provides a ball head ejector pin device 2 for the shift fork detector is treating the detection shift fork and is examining time measuring, is used for treating the detection shift fork location to the distance between the center of the arc concave surface of the locating plate of waiting to detect the shift fork and the shift fork prong upper surface is detected in the convenient determination, thereby whether the definite detection shift fork satisfies the design demand.
The ball head ejector pin device is of a split structure and comprises a positioning pin rod 21, a fastening nut 22 and a ball body 23; the first end of the dowel bar 21 is provided with a ball 23 and the ball 23 is secured by a tightening nut 22.
The ball head ejector pin device of the utility model adopts a split structure, and the original integrated structure is divided into three relatively independent parts, namely a positioning pin rod 21, a fastening nut 22 and a ball body 23; the ball 23 is fixed relatively to the positioning pin 21 through the fastening nut 22; therefore, when the ball body 23 is damaged due to impact in the detection process and needs to be replaced, only the ball body 23 needs to be replaced, and the positioning pin rod 21 and the fastening nut 22 can still be used continuously, so that the cost is greatly reduced. In addition, the ball body 23 can be directly purchased, so that the cost is lower, and the manufacturing time is saved; for the positioning pin rod 21 and the fastening nut 22, the material quality and the processing method thereof can correspondingly reduce the requirements, and simultaneously, the requirements on the processing precision are lower except for the key matching parts, so that the manufacturing cost and the manufacturing difficulty of parts are reduced on the whole.
In a specific embodiment, as shown in fig. 3, the dowel bar 21 has a stepped shape as a whole, and includes a first shaft portion 211, a second shaft portion 212, and a third shaft portion 213 connected in sequence; the second shaft portion 212 has a diameter smaller than that of the first shaft portion 211, and the third shaft portion 213 has a diameter smaller than that of the second shaft portion 212. Wherein the first shaft portion 211 is commonly used for installing the positioning pin rod 21, the second shaft portion 212 is provided with threads and is in threaded connection with the fastening nut 22, and the third shaft portion 213 is in interference fit with the fastening nut 22.
It should be noted that the above description is only one specific structure of the positioning pin 21, and other structures are possible, such as: the dowel bar 21 may be a through-shaft structure of uniform diameter; the first shaft 211 may be a circular shaft or a square shaft; the second shaft portion 212 and the third shaft portion 213 may be merged into a shaft portion of the same diameter. When the positioning pin 21 is a through shaft with a uniform diameter or the second shaft part 212 and the third shaft part 213 of the positioning pin 21 are combined into a shaft with a uniform diameter, the positioning pin 21 and the fastening nut 22 may be connected by a pin instead of a screw.
As shown in fig. 5, the inner bore 221 of the set nut 22 may be divided into a first region 221a, a second region 221b and a third region 221c, wherein the first region 221a is threaded for threaded connection with the second shaft portion 212 of the dowel 21; the second region 221b is a circular hole for interference fit with the third shaft portion 213 of the dowel bar 21; the third region 221c is a spherical mating region for mating with the ball 23.
It should be noted that the above description is only one specific structure of the fastening nut 22, and other structures can be provided as long as they can be adapted to the positioning pin 21, such as: when the dowel bar 21 is a through shaft with a uniform diameter, the inner diameters of the holes of the first region 221a and the second region 221b of the fastening nut 22 are also uniform.
The connection between the positioning pin 21 and the fastening nut 22 is not limited to a threaded connection, but may be another connection that can perform a connection fixing function, for example: the second shaft part 212 of the positioning pin rod 21 may have a positioning pin hole, the fastening nut 22 may have a positioning pin hole correspondingly arranged, and the second shaft part 212 and the fastening nut 22 are axially matched and are connected and fixed by a positioning pin matched with the positioning pin hole.
As shown in fig. 2, 3, 5 and 6, the end surface of the third shaft part 213 of the dowel bar 21 is a concave arc surface matched with the sphere 23, the diameter of the concave arc surface is consistent with that of the sphere 23, and the center of the concave arc surface is located on the central axis of the dowel bar 21; the spherical matching area is located on the thin side end face of the fastening nut 22, the diameter of the spherical matching area is gradually reduced from the inside to the outside of the hole, the diameter of the spherical matching area is consistent with that of the sphere 23, the sphere 23 can be clamped from one side, the sphere center of the spherical matching area is located on the central axis of the positioning pin rod 21, when the sphere 23 is installed, one side of the sphere is matched with the concave cambered surface, the other side of the sphere is matched with the spherical matching area, and the sphere 23 is clamped by the concave cambered surface and the spherical matching area together.
The sphere 23 is fixed by the sphere fixing mode, and meanwhile, the sphere center of the sphere 23 is ensured to be positioned on the central axis of the positioning pin rod 21, so that when the ball head ejector pin device is used, the center of the part to be detected, which is tightly pushed by the sphere 23, is also positioned on the central axis of the positioning pin rod 21, and therefore, the part to be detected can be conveniently positioned.
It should be noted that, under the precondition of meeting the requirements of strength and hardness, the ball body 23 may be made of various materials, such as steel ball or iron ball.
In an application example of a ball nose knock pin device 2, as shown in fig. 1, the fork detector includes an installation body 1, a force application mechanism and the ball nose knock pin device 2, the installation body 1 includes a base 11, a support base 12, a checking fixture 13 and a bearing 14, the support base 12 is fixed on the base 11, the ball nose knock pin device 2 is installed on the support base 12, the support base 12 is in sliding fit with a positioning pin rod 21, and the second end of the positioning pin rod 21 is provided with the force application mechanism.
Wherein the base 11 has a horizontal reference surface, the axis of the dowel pin 21 of the ball stud device 2 is flush with the horizontal surface, the support base 12 has a through hole for the dowel pin 21 to pass through, obviously, the central axis of the through hole is parallel to the horizontal reference surface of the base 11, and when setting, the distance between the central axis of the through hole of the support base 12 and the horizontal reference surface of the base 11 can be predetermined.
The force applying mechanism is used for applying a horizontal force to the positioning pin rod 21 so that the positioning pin rod 21 can slide in the horizontal direction relative to the support base 12. In practical application, the force applying mechanism can be a hydraulic cylinder, an air cylinder or a motor; depending on the configuration of the force application mechanism, the force application end of the force application mechanism may or may not be connected to the dowel bar 21.
As shown in fig. 1 and 4, the shift fork 3 to be detected is located at the side of the first end of the positioning pin rod 21 of the ball top pin device 2, that is, the shift fork 3 to be detected and the force applying mechanism are respectively located at two ends of the ball top pin device 2, and the shift fork 3 to be detected comprises a shift fork rod 32, a shift fork foot 33 and a positioning plate 31; the shifting fork rod 32, the shifting fork leg 33 and the positioning plate 31 are fixedly connected together, and the ball body 23 is matched with the arc concave surface 311 of the positioning plate 31.
When the shifting fork 3 to be detected is detected, the shifting fork 3 to be detected is placed at the position shown in fig. 1, the arc-shaped concave surface 311 of the positioning plate 31 faces the ball 23 of the ball ejector pin device 2, the upper surface of the shifting fork pin 33 is parallel to the horizontal reference surface of the base 11, and the upper end and the lower end of the shifting fork rod 32 are respectively matched with the two bearings 14 of the mounting main body 1, so that the shifting fork 3 to be detected can slide up and down; in the orientation shown in fig. 1, the force application mechanism applies a rightward acting force to the positioning pin 21, the positioning pin 21 moves rightward relative to the support seat 12, after the sphere 23 contacts the arc-shaped concave surface 311, the shift fork 3 to be detected slides up and down under the thrust action of the ball-nose knock pin device 2 until the sphere 23 is completely embedded in the arc-shaped concave surface 311 of the positioning plate 31, that is, the center of the arc-shaped concave surface 311 of the positioning plate 31 and the center of the sphere 23 are both located on the axis of the positioning pin 21, at this time, the distance from the upper surface of the shift fork leg 33 to the upper surface of the base 11 (i.e., the aforementioned horizontal reference surface) can be measured by the detection tool 13, and then, by combining the preset distance from the axis of the positioning pin 21 to the upper surface of the base 11, the distance L1 from the center of the arc-shaped concave surface 311 of the positioning plate 31.
It should be noted that the above description is only a specific structure of the shift fork detector, and other structures are possible in practical applications, such as: two support blocks 12 can be used to fix the dowel pin 21 for higher positioning accuracy.
It should be further noted that, in the above-described embodiment, the distance L1 from the center of the arc concave 311 of the positioning plate 31 to the upper surface of the fork 33 is measured, and an indirect measurement mode is adopted, that is, a horizontal reference surface is set, the distance between the horizontal reference surface and the center of the arc concave 311 is predetermined, and then the distance between the upper surface of the fork 33 and the horizontal reference surface after positioning is measured by the checking fixture 13, and the difference between the two is the distance L1 to be measured; it can be understood that, in practical application, the distance L1 may be directly measured by using the gauge 13 without setting a horizontal reference surface. The detection tools 13 applied in the two measurement modes can be different, and the measurement mode can be determined according to the specific selection of the detection tools 13, or the detection tools 13 can be selected according to the measurement mode. Specifically, the gauge 13 may be a dial indicator or a light and distance measuring instrument.
The principles and embodiments of the present invention have been explained herein using specific examples, and the above descriptions of the embodiments are only used to help understand the method and its core ideas of the present invention. It should be noted that, for those skilled in the art, without departing from the principle of the present invention, the present invention can be further modified and modified, and such modifications and modifications also fall within the protection scope of the appended claims.
Claims (9)
1. A ball head ejector pin device is used for positioning a shifting fork to be detected and is characterized in that the ball head ejector pin device is of a split structure and comprises a positioning pin rod, a fastening nut and a ball body; the first end of the positioning pin rod is provided with the ball body, and the ball body is fixed through the fastening nut.
2. The ball nose top pin device according to claim 1, wherein the shift fork to be detected includes a shift fork lever, a shift fork foot, and a positioning plate; the shifting fork rod, the shifting fork foot and the positioning plate are fixedly connected together, the positioning plate is provided with an arc-shaped concave surface, and the ball body is matched with the arc-shaped concave surface of the positioning plate.
3. The ball nose knock pin assembly of claim 1, in which the dowel bar is generally stepped and includes a first shaft portion, a second shaft portion and a third shaft portion connected in series, the second shaft portion having a diameter smaller than the first shaft portion, and the third shaft portion having a diameter smaller than the second shaft portion.
4. A ball nose knock pin assembly as claimed in claim 3, in which the second shaft portion is provided with a screw thread for screw threaded engagement with the locking nut, and the third shaft portion is an interference fit with the locking nut.
5. A ball nose knock pin assembly as claimed in claim 3 in which the second shaft portion is provided with a locating pin hole and the locking nut is also provided with a locating pin hole, the second shaft portion being axially engaged with the locking nut hole and secured by a locating pin.
6. A ball nose knock pin assembly as claimed in claim 3, in which the ball is located between the detent pin shaft and the locking nut, the end face of the third shaft portion of the detent pin shaft being a concave arc surface that mates with the ball; the inner hole of the fastening nut is provided with a spherical matching area matched with the ball body, and the concave arc surface and the spherical matching area clamp the ball body together.
7. A ball nose pinning assembly according to claim 6, wherein the centre of the concave arc surface is located on the centre axis of the dowel pin shaft and the centre of the ball engaging region is located on the centre axis of the dowel pin shaft.
8. A fork tester comprising a support base, a force applying mechanism and a ball nose pin device as claimed in any one of claims 1 to 7, the ball nose pin device being mounted on the support base, the support base being in sliding engagement with the dowel pin, the force applying mechanism being located at the second end of the dowel pin.
9. The fork detector of claim 8, wherein the force applying mechanism is selected from a hydraulic cylinder, an air cylinder, or an electric motor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921530477.5U CN210180686U (en) | 2019-09-12 | 2019-09-12 | Ball head ejector pin device and shifting fork detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921530477.5U CN210180686U (en) | 2019-09-12 | 2019-09-12 | Ball head ejector pin device and shifting fork detector |
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| Publication Number | Publication Date |
|---|---|
| CN210180686U true CN210180686U (en) | 2020-03-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201921530477.5U Active CN210180686U (en) | 2019-09-12 | 2019-09-12 | Ball head ejector pin device and shifting fork detector |
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| CN (1) | CN210180686U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110487566A (en) * | 2019-09-12 | 2019-11-22 | 湖北中航精机科技有限公司 | Bulb ejector pin device and shift fork detector |
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2019
- 2019-09-12 CN CN201921530477.5U patent/CN210180686U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110487566A (en) * | 2019-09-12 | 2019-11-22 | 湖北中航精机科技有限公司 | Bulb ejector pin device and shift fork detector |
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