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CN-224229222-U - Operating mechanism suitable for 9-gear transmission and provided with locking function and operating assembly

CN224229222UCN 224229222 UCN224229222 UCN 224229222UCN-224229222-U

Abstract

The utility model discloses an operating mechanism and an operating assembly which are suitable for a 9-gear transmission and have a gear locking function, and solves the problem that when a reversing function cannot be used in an upper cover gear locking structure in a single H gas circuit of the existing 9-gear transmission, an operator is caused to confuse judgment of the currently used gear. The gear shifting device comprises a gear shifting head, a gear shifting arm, a gear shifting device and a gear shifting device, and is characterized in that the gear shifting device comprises a gear shifting device, a gear shifting device and a gear shifting device, the gear shifting device is characterized in that the gear shifting device is provided with a telescopic end, the telescopic end is retracted to be an initial position and extends to be a stop position, a fixed end of the gear shifting device is arranged on a shell of the operating mechanism, a limiting boss is arranged on the peripheral wall of the gear shifting head and located on the opposite side of a groove, one side of the limiting boss, which is close to the gear shifting arm, is a limiting surface, when the gear shifting head is in a neutral position, the limiting surface corresponds to the end side wall of the telescopic end, the height of the limiting surface in the radial direction is H, when the telescopic end is in the initial position, the distance between the end of the telescopic end and the peripheral wall of the gear shifting head is L0, and when the telescopic end is in the stop position, the distance between the end of the telescopic end and the peripheral wall of the gear shifting head is L1, L1 is H < L0.

Inventors

  • YUAN SHIJIE
  • JIAO ZHIBO
  • FENG CHENYANG

Assignees

  • 陕西法士特齿轮有限责任公司

Dates

Publication Date
20260512
Application Date
20250613

Claims (8)

  1. 1. The operating mechanism suitable for the 9-gear transmission and provided with a gear locking function comprises a transverse gear shifting rod (1), wherein the rotation input end of the transverse gear shifting rod is connected with a gear shifting arm (3) through a spline, the outer peripheral wall of the transverse gear shifting rod (1) close to the output end of the transverse gear shifting rod is fixedly connected with a gear shifting head (5), a groove is formed in the outer peripheral wall of the gear shifting head (5), a gear selecting shifting head (2) is clamped in the groove, the gear selecting shifting head (2) is used for driving the gear shifting head (5) and the transverse gear shifting rod (1) to move along the axial direction of the gear shifting head to perform gear selecting operation, and the gear shifting arm (3) is used for driving the transverse gear shifting rod (1) and the gear shifting head (5) to rotate, so that a shifting fork and a shifting fork shaft on an upper cover of the transmission are driven to move along the axial direction of the gear shifting head to perform gear shifting operation, and the operating mechanism is characterized in that: The device also comprises a limiting device, wherein the limiting device is provided with a telescopic end, the telescopic end is retracted to an initial position and extends to a stop position, and the fixed end of the limiting device is fixedly connected to the shell of the operating mechanism; The gear shifting head (5) is provided with a limiting boss on the outer peripheral wall of the groove and located on the opposite side of the groove, one side, close to the gear shifting arm (3), of the limiting boss is a limiting surface, the setting position of the limiting boss meets the following conditions that when the gear shifting head (5) is in a neutral gear position, the limiting surface corresponds to the end side wall of a telescopic end, the height of the limiting surface in the radial direction is defined as H, when the telescopic end is in an initial position, the distance between the end of the telescopic end and the outer peripheral wall of the gear shifting head (5) is L0, and when the telescopic end is in a stop position, the distance between the end of the telescopic end and the outer peripheral wall of the gear shifting head (5) is L1, and L1< H < L0.
  2. 2. The operating mechanism with the locking function, which is applicable to the 9-gear transmission, as set forth in claim 1, is characterized in that the limiting boss is a section of annular boss which is arranged around the outer side wall of the gear shifting head (5), and two outer end surfaces of the boss in the circumferential direction are parallel to a middle division surface of the boss passing through the central axis in the circumferential direction.
  3. 3. The operating mechanism with a locking function for a 9-speed transmission according to claim 2, wherein the distance D between two outer end surfaces of the boss in the circumferential direction is 12 mm-18 mm.
  4. 4. The operating mechanism with a lock gear function for a 9-speed transmission according to claim 3, wherein D has a value of 15mm.
  5. 5. The operating mechanism with the locking function, which is applicable to the 9-gear transmission, according to claim 1, is characterized in that the limiting device is a locking cylinder (4), and the working end of the locking cylinder (4) is a telescopic end of the limiting device.
  6. 6. The operating mechanism with the locking function, which is applicable to the 9-gear transmission, as set forth in claim 5, is characterized in that the locking cylinder (4) is connected with an air source, and the working end of the locking cylinder (4) is controlled to do telescopic movement by on-off of the air source.
  7. 7. The operating mechanism with a lock gear function for a 9-speed transmission according to claim 6, wherein the side of the telescopic end, which is close to the limiting surface, is of a planar structure.
  8. 8. An operating assembly suitable for a 9-speed transmission and having a locking function, comprising the operating mechanism suitable for a 9-speed transmission and having a locking function according to any one of claims 1 to 7.

Description

Operating mechanism suitable for 9-gear transmission and provided with locking function and operating assembly Technical Field The utility model relates to a gear locking structure for a transmission, in particular to an operating mechanism and an operating assembly which are applicable to a 9-gear transmission and have a gear locking function. Background In a 9-speed transmission with overdrive, there are usually a main case and an auxiliary case, the auxiliary case controls high and low speeds, the main case has different gear combinations, and under the cooperation of the main case and the auxiliary case, reverse gears with 2 different speed ratios can be realized. The types of operation of the transmission operating system of this structure can be classified into a single H and a double H. Because the gear engaging structure of the double H gas circuits is determined, one gear engaging position corresponds to one gear, and therefore gear locking is not needed. And a single H gas circuit is corresponding to the high and low gear, then need to lock the reverse climbing gear position of the high gear area, prevent that the user from hanging into, advance the fender side and be 9 this moment. The existing single H gas circuit is an upper cover lock gear, and the principle is that when the transmission is switched to a high gear, a lock gear cylinder arranged on the upper cover of the transmission works, a pin in the cylinder stretches out and is inserted into a reverse gear shifting fork shaft, so that gear shifting operation is prevented. For example, chinese patent No. CN202402616U relates to a single H gas path upper cover lock structure similar to the above, which discloses an overdrive transmission main box lock structure, comprising a lock assembly disposed in the transmission upper cover and adapted to a shift fork for locking or releasing a shift fork shaft, the lock assembly comprising a lock piston adapted to the shift fork shaft and a cylinder (i.e. a lock cylinder) for moving the lock piston, the lock piston being connected with a lock gas pipe, the lock gas pipe being disposed in a control housing. The reverse gear locking in the high gear area is realized through the locking component for locking or separating from the shifting fork shaft. The lock-gear structure needs to install a lock-gear cylinder on the upper cover of the transmission, the lock-gear cylinder pushes the lock-gear piston to move, and the lock-gear piston is inserted into a shifting fork shaft (a reverse gear/climbing gear shifting fork shaft) to limit the movement of the shifting fork shaft, so that the lock-gear is completed. However, the reversing function of the reversing mechanism of the transmission needs to be completed by means of the reversing fork shaft, and if the transmission is shifted to a high gear region, the reversing fork shaft can be locked by the locking structure, so that the reversing function of the reversing mechanism cannot be used. If the reversing mechanism cannot be used, the normal operation of the transmission is not affected, but the gear sequence fed back to the driving end is different from the gear sequence used by an operator, so that the judgment of the operator on the currently used gear is easily affected, and safety accidents are caused. Disclosure of utility model The utility model aims to solve the problems that in the upper cover locking structure in the single H gas circuit of the existing 9-gear transmission, when the transmission is switched to a high gear, the reversing function of a reversing mechanism cannot be used because a reversing fork shaft is locked, and the judgment of an operator on the currently used gear is possibly disordered, so that safety accidents are caused, and provides an operating mechanism and an operating assembly which are applicable to the 9-gear transmission and have the locking function. In order to achieve the above purpose, the utility model adopts the following technical scheme: The operating mechanism suitable for the 9-gear transmission and provided with a gear locking function comprises a transverse gear shifting rod, wherein the rotation input end of the transverse gear shifting rod is connected with a gear shifting arm through a spline, the outer peripheral wall of the transverse gear shifting rod, which is close to the output end of the transverse gear shifting rod, is fixedly connected with a gear shifting head, the outer peripheral wall of the gear shifting head is provided with a groove, a gear selecting head is clamped in the groove, the gear selecting head is used for driving the gear shifting head and the transverse gear shifting rod to move along the axial direction of the gear shifting head so as to perform gear selecting operation, the gear shifting arm is used for driving the transverse gear shifting rod and the gear shifting head to rotate, and further the shifting fork and the shifting fork shaft on the upper cover of the transmissi