CN204391587U - A kind of electric chassis truck - Google Patents

Abstract

The utility model discloses an electric chassis vehicle, which comprises a vehicle frame and a controller. The vehicle frame is provided with a motor, a gear transmission mechanism and a screw rod which are sequentially connected. The gear transmission mechanism comprises a primary gear transmission assembly, a torque clutch and a The secondary gear transmission assembly, the driving gear meshes with the primary gear transmission assembly, and the driven tooth meshes with the secondary gear transmission assembly; the frame on one side of the screw rod is provided with a first proximity switch and a second proximity switch distributed at intervals , the threaded part of the screw rod is covered with a baffle for covering the first proximity switch and the second proximity switch; the motor, the first proximity switch and the second proximity switch are respectively connected with the electric control unit. The electric chassis car of the utility model can be freely switched between manual and automatic operations without mutual influence, and has high positioning accuracy for the opponent car.

Description

An electric chassis vehicle

technical field

The utility model belongs to an electric operating mechanism of a switch cabinet, in particular to an electric chassis vehicle.

Background technique

In the switchgear, through the cooperation of the electric chassis car mechanism with the circuit breaker car, isolation car, voltage transformer car, etc., manual and electric control can be realized. The electric chassis car circuit breaker and other mechanisms are set between the experimental position and the working position. switch. The existing chassis car mechanism mainly adopts the motor to drive the chain through the reduction box, and the driven wheel and the screw mandrel are driven by the chain to rotate, thereby driving the corresponding circuit breaker and other mechanisms to realize entering or exiting the car. However, in the process of entering or exiting the car, the parking position is controlled by a simple motor, and the control accuracy is not high.

Utility model content

The purpose of the utility model is to provide an electric chassis vehicle with high control precision and separate manual operation and electric operation to protect the motor from being damaged.

In order to achieve the above object, the technical solution adopted by the utility model is:

An electric chassis vehicle, including a frame and a controller, the frame is provided with a motor, a gear transmission mechanism and a screw rod connected in sequence, and the gear transmission mechanism includes a primary gear transmission assembly, a torque clutch and a secondary gear transmission assembly The torque clutch includes driving teeth, clutch discs and driven teeth that are sequentially placed on the shaft. There are several balls distributed along the circumferential interval between the driving teeth and the clutch discs, as well as pits for accommodating the balls. Tighten the anti-torque circlip of the clutch plate, a return spring is arranged between the clutch plate and the driven tooth, and the end surface of the clutch plate is provided with a number of protrusions distributed along the circumferential interval, and the end surface of the driven tooth is provided with a Grooves that match the bumps; the driving teeth mesh with the primary gear transmission assembly, and the driven teeth mesh with the secondary gear transmission assembly;

The frame on one side of the screw rod is provided with a first proximity switch and a second proximity switch distributed at intervals, and the threaded part of the screw rod is covered with a baffle for blocking the first proximity switch and the second proximity switch;

The motor, the first proximity switch and the second proximity switch are respectively connected with the electric control unit.

Preferably, the vehicle frame is provided with a transmission mechanism box for enclosing and installing the gear transmission mechanism.

In the electric chassis vehicle of the utility model, the gear transmission mechanism is provided with a torque clutch, and the gear transmission mechanism is divided into a primary gear transmission assembly and a secondary gear transmission assembly. During manual operation, the rotational power of the secondary gear transmission assembly does not It will be transmitted to the primary gear transmission assembly, so as to effectively protect the motor from being damaged; the first proximity switch and the second proximity switch are respectively used as limit switches to limit the limit position when entering or exiting the car, and the motor is controlled by the proximity switch. Accurate control of parking is achieved; the gear transmission mechanism combines the reduction box and the transmission mechanism together, without a separate reduction box, which reduces the size of the mechanism and facilitates installation in a narrow chassis.

Description of drawings

Fig. 1 is the front view of the electric chassis vehicle of the present utility model.

Fig. 2 is the front view of the gear transmission mechanism of the present invention (the case cover is omitted).

Fig. 3 is a structural schematic diagram of the torque clutch of the present invention.

Fig. 4 is a partial block diagram of the circuit of the utility model.

Marks in the figure: 10-frame, 20-motor, 30-gear transmission mechanism, 31-primary gear transmission assembly, 32-torque clutch, 321-driving gear, 322-dimple, 323-ball, 324-clutch plate, 325-anti-torque circlip, 326-bump, 327-return spring, 328-groove, 329-driven tooth, 33-secondary gear transmission assembly, 34-transmission mechanism box, 40-screw rod, 51-the first One proximity switch, 52-second proximity switch, 53-baffle plate, 60-controller.

Detailed ways

With reference to Fig. 1, Fig. 2, a kind of electric chassis vehicle of the present utility model comprises vehicle frame 10 and controller 60, and vehicle frame 10 is provided with motor 20, gear transmission mechanism 30 and screw mandrel 40 connected sequentially, described The gear transmission mechanism 30 includes a primary gear transmission assembly 31 , a torque clutch 32 and a secondary gear transmission assembly 33 .

Referring to Fig. 3, the torque clutch 32 includes a driving tooth 321, a clutch plate 324 and a driven tooth 329 which are sequentially sleeved on the shaft, and a number of balls 323 distributed along the circumferential interval are arranged between the driving tooth 321 and the clutch plate 324, and accommodating The pit 322 of the ball 323, the clutch plate 324 is covered with the anti-torque clip 325 of the pre-tightened clutch plate 324, one end of the anti-torque clip 325 is sleeved on a shaft, and the other end is stuck on the clutch plate 324, through The anti-torque clip 325 is tightened, thereby pre-tightening the clutch plate 324 . A back-moving spring 327 is arranged between the clutch plate 324 and the driven tooth 329, and the end surface of the clutch plate 324 is provided with a plurality of projections 326 spaced apart along the circumferential direction, and the end surface of the driven tooth 329 is provided with a protruding bump 326 which fits with the clutch plate 324. The block 326 matches the groove 328; the driving tooth 321 meshes with the primary gear transmission assembly 31, and the driven tooth 329 meshes with the secondary gear transmission assembly 33.

The vehicle frame 10 on one side of the screw mandrel 40 is provided with a first proximity switch 51 and a second proximity switch 52 distributed at intervals, and the threaded part of the screw mandrel 40 is covered with a block for blocking the first proximity switch 51 and the second proximity switch 52. plate 53.

Referring to FIG. 4 , the motor 20 , the first proximity switch 51 and the second proximity switch 52 are respectively connected to the electronic control unit.

During electric operation, the output power of the motor 20 drives the primary gear transmission assembly 31 to rotate, and the primary gear transmission assembly 31 drives the torque clutch 32 to rotate, wherein, when the driving gear 321 of the torque clutch 32 rotates, the ball 323 is thrown under the action of centrifugal force out, and squeeze the clutch plate 324, the clutch plate 324 overcomes the elastic force of the return spring 327, so that the protrusion 326 of the clutch plate 324 is embedded in the groove 328 of the driven tooth 329, so that the driving tooth 321, the clutch plate 324 and the driven tooth The teeth 329 are integrated to form a linkage. When the driven tooth 329 rotates, it drives the secondary gear transmission assembly 33 to rotate, and the secondary gear transmission assembly 33 drives the screw mandrel 40 to rotate, thereby realizing entering or exiting the vehicle. When entering the car, the baffle plate 53 is close to the first proximity switch 51, and when the first proximity switch 51 is blocked by the baffle plate 53, a signal is sent to control the power failure of the motor 20 by the controller 60, thereby parking; Close to the second proximity switch 52, after the second proximity switch 52 is blocked by the baffle plate 53, a signal is sent, and the controller 60 is used to control the motor 20 to be powered off, thereby stopping the vehicle.

During manual operation, the handle drives the screw mandrel 40 to rotate. When the screw mandrel 40 rotates, it will inevitably drive the secondary gear transmission assembly 33 to rotate. Since the torque clutch 32 does not rotate when the driving gear 321 does not rotate, the clutch plate 324 and the driven gear 329 is in a separate state under the action of the return spring 327 , so the power of the secondary gear transmission assembly 33 will not be transmitted to the primary gear transmission assembly 31 through the torque clutch 32 , thereby effectively protecting the motor 20 .

In order to protect the gear transmission mechanism 30, the vehicle frame 10 is provided with a transmission mechanism box 34 for enclosing and installing the gear transmission mechanism 30, and the gear transmission mechanism 30 is enclosed in the transmission mechanism box 34, so that the electric chassis vehicle can operate in a relatively harsh environment. run in.

Claims (2)

1. an electric chassis truck, comprise vehicle frame (10) and controller (60), vehicle frame (10) is provided with the motor (20) connected successively, gear drive (30) and screw mandrel (40), it is characterized in that, described gear drive (30) comprises primary pinion transmission component (31), torque clutch (32) and secondary gears transmission component (33), torque clutch (32) comprises the driving tooth (321) be placed on successively on axle, clutch-plate (324) and driven tooth (329), some balls circumferentially spaced apart (323) are provided with between driving tooth (321) and clutch-plate (324), and hold the pit (322) of ball (323), the upper cover of clutch-plate (324) has the reaction torque jump ring (325) of pretension clutch-plate (324), back-moving spring (327) is provided with between clutch-plate (324) and driven tooth (329), and clutch-plate (324) end face is provided with some projections circumferentially spaced apart (326), driven tooth (329) end face is provided with the groove (328) matched with projection (326) when fitting with clutch-plate (324), driving tooth (321) is meshed with primary pinion transmission component (31), and driven tooth (329) is meshed with secondary gears transmission component (33),

The vehicle frame (10) of screw mandrel (40) side is provided with the first proximity switch (51) spaced apart and the second proximity switch (52), and the threaded portion cover of screw mandrel (40) has the baffle plate (53) for blocking the first proximity switch (51) and the second proximity switch (52);

Motor (20), the first proximity switch (51) are connected with ECU (Electrical Control Unit) respectively with the second proximity switch (52).

2. electric chassis truck according to claim 1, is characterized in that, described vehicle frame (10) is provided with the transmission case (34) closed and install gear drive (30).