Non-contact automatic gear shifting mechanism

Abstract

The utility model discloses a non-contact type automatic gear shifting mechanism which comprises a machine frame, a rotating shaft, a plug pin, a motor, a forward sensor, a backward sensor, an automatic gear shifting piece, a manual gear shifting rod and a cotter pin, the motor is fixed on the top wall of the machine frame, a transmission shaft of the motor is connected with the automatic gear shifting piece, and a bevel opening is formed in the automatic gear shifting piece. The manual gear shifting rod penetrates through the bevel opening, a U-shaped groove in the tail end of the manual gear shifting rod is connected with one end of the rotating shaft through a plug pin and a cotter pin, and a forward sensor and a backward sensor are arranged on one side of the motor. The automatic gear shifting mechanism is reasonable in structural design, the automatic gear shifting piece and the manual gear shifting rod can achieve non-physical contact, and dual-mode compatibility is achieved; manual intervention can be achieved after automatic gear shifting is completed; and closed-loop control of precise positioning is realized through double sensors. The gear shifting smoothness is integrally improved, and meanwhile the maintenance cost and the system reliability are both considered.

Description

TECHNICAL FIELD

[0001] The utility model relates to a gear shifting mechanism, concretely relates to a non-contact automatic gear shifting mechanism. BACKGROUND

[0002] The traditional gear shifting mechanism adopts mechanical linkage or electromagnetic contact type design, and has the following defects:

[0003] 1. Mechanical wear leads to shortened service life;

[0004] 2. An additional clutch is needed for manual / automatic mode switching;

[0005] 3. Gear shifting impact affects smoothness.

[0006] In view of the wear of the mechanical contact type gear shifting existing in the prior art, the utility model aims at providing a non-contact automatic gear shifting mechanism, which realizes seamless switching of manual / automatic mode. CONTENT OF THE UTILITY MODEL

[0007] In view of the wear of the mechanical contact type gear shifting existing in the prior art, the utility model aims at providing a non-contact automatic gear shifting mechanism, which realizes seamless switching of manual / automatic mode.

[0008] In order to realize the above-mentioned purpose, the utility model is through the following technical scheme to realize: a non-contact automatic gear shifting mechanism, including frame, pivot, bolt, motor, forward sensor, backward sensor, automatic gear shifting piece, manual gear shifting rod and split pin, the motor is fixed on the top wall of the frame, the transmission shaft of the motor is connected with the automatic gear shifting piece, the automatic gear shifting piece is provided with the bevel, the manual gear shifting rod is set through the bevel, the U-shaped groove at the end of the manual gear shifting rod is connected with one end of the pivot through the bolt and the split pin, and the motor is provided with the forward sensor and the backward sensor on one side.

[0009] Preferably, the bevels are notched grooves.

[0010] Preferably, the motor, the forward sensor and the backward sensor are connected with a control circuit.

[0011] The utility model has the advantages that: the structure design of the utility model is reasonable, the automatic gear shifting piece and the manual gear shifting rod can realize non-physical contact, have dual-mode compatibility: manual intervention can be carried out after automatic gear shifting is completed; through the double sensors, closed-loop control of accurate positioning is realized. BRIEF DESCRIPTION OF DRAWINGS

[0012] The utility model will be described in detail in combination with the drawings and specific embodiments;

[0013] Figure 1 It is the whole structure schematic diagram of the utility model;

[0014] Figure 2 The utility model discloses a decomposition schematic view. DETAILED DESCRIPTION

[0015] In order to make the technical means, creative features, purposes and effects of the utility model easy to understand, the utility model is further described below in combination with specific embodiments.

[0016] Reference Figure 1 The specific embodiment adopts the following technical scheme: a non-contact automatic gear shifting mechanism, comprising a rack 1, a rotating shaft 2, a bolt 3, a motor 4, a forward sensor 5, a backward sensor 6, an automatic gear shifting piece 7, a manual gear shifting rod 8 and a split pin 9, the motor 4 is fixed on the top wall of the rack 1, the transmission shaft of the motor 4 is connected with the automatic gear shifting piece 7, the automatic gear shifting piece 7 is provided with an oblique opening 71, the manual gear shifting rod 8 is arranged through the oblique opening 71, the U-shaped groove at the end of the manual gear shifting rod 8 is connected with one end of the rotating shaft 2 through the bolt 3 and the split pin 9, and one side of the motor 4 is respectively provided with the forward sensor 5 and the backward sensor 6.

[0017] It is worth noting that the oblique openings 71 are notched grooves 72.

[0018] In addition, the motor 4, the forward sensor 5 and the backward sensor 6 are connected with a control circuit.

[0019] The working principle of the specific embodiment is as follows: when the control circuit receives a forward signal, the motor 4 rotates, drives the automatic gear shifting piece 7 to rotate, and when the automatic gear shifting piece 7 rotates, the oblique opening 71 lifts the manual gear shifting rod 8, the manual gear shifting rod 8 continues to rotate after leaving the notch, rotates to the forward sensor 5 receiving a signal, and the motor 4 reverses after a time delay, so that the manual gear shifting rod 8 falls into the forward notched groove, and the motor 4 reverses to stop after the forward sensor 5 and the backward sensor 6 receive signals, so that the entire automatic gear shifting piece 7 does not contact the manual gear shifting rod 8, and the manual gear shifting rod 8 can be freely shifted in a manual mode; the control mode of the backward is the same.

[0020] The specific embodiment realizes non-contact linkage of the oblique opening 71 of the automatic gear shifting piece 7 and the manual gear shifting rod 8, completely eliminates the friction loss of traditional mechanical gear shifting, and prolongs the service life of the mechanism; after automatic gear shifting is completed, the manual gear shifting rod 8 can be freely operated without an additional clutch or mode switching device; based on the double-signal feedback of the forward sensor 5 and the backward sensor 6, combined with the time delay reverse logic of the motor 4, the gear positioning accuracy is ensured to be ±1mm; the motor 4, the sensor 5 and the sensor 6 are integrated on the top of the rack 1, the rotating shaft 2 realizes rapid assembly through the bolt 3 and the split pin 9, the overall structure is simple and has strong impact resistance; the non-contact automatic gear shifting mechanism is suitable for various scenes requiring automatic / manual gear shifting such as electric vehicles and engineering machinery, and can adapt to different torque requirements by only adjusting control parameters.

[0021] The basic principle and main features of the present application and the advantages of the present application are shown and described above. Those skilled in the art should understand that the present application is not limited by the above examples, and the above examples and descriptions in the specification are only to illustrate the principles of the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the present application. The scope of protection of the present application is defined by the appended claims and their equivalents.

Claims

1. A non-contact automatic gear shifting mechanism, characterized in that, The device includes a frame (1), a rotating shaft (2), a pin (3), a motor (4), a forward sensor (5), a backward sensor (6), an automatic shift plate (7), a manual shift lever (8), and a cotter pin (9). The motor (4) is fixed on the top wall of the frame (1). The drive shaft of the motor (4) is connected to the automatic shift plate (7). The automatic shift plate (7) is provided with a slanted opening (71). The manual shift lever (8) is set through the slanted opening (71). The U-shaped groove at the end of the manual shift lever (8) is connected to one end of the rotating shaft (2) through the pin (3) and the cotter pin (9). A forward sensor (5) and a backward sensor (6) are respectively provided on one side of the motor (4).

2. The non-contact automatic gear shifting mechanism according to claim 1, characterized in that, The oblique opening (71) is connected by a notch (72).

3. The non-contact automatic gear shifting mechanism according to claim 1, characterized in that, The motor (4), forward sensor (5), and backward sensor (6) are all connected to the control circuit.

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