RU2228898C2 - Passenger car two-column lift - Google Patents

Abstract

FIELD: automotive industry; passenger car servicing facilities. SUBSTANCE: proposed lift contains two columns on inner surfaces of which two carriages are installed for travel provided with support members for coupling with car and resting on load nuts of two load screws connected with synchronous electric drives. Columns are installed to arranged car in between along its longitudinal axis, with adapter members secured on car body. Support members of carriages are made in form of coaxial shafts, one of which is driving shaft coupled with self-braking reversible electric drive of adapter members and car body turning mechanism and it is provided with grip with union clamp on its end forming a figure, for instance, tetrahedron, with groove for disk of first adapter member secured on car for axially fixing said member. Second shaft is installed in corresponding support member for free rotation and longitudinal travel, and it is provided with grip with union clamp forming cylindrical figure for contact with cylindrical surface of second adapter member secured on car. Plates are installed along columns to contact with position switches secured on carriages. Two transport member are arranged in zone of car wheel-to-floor contact to provide cross displacement of car over distance sufficient for placing the car on lift and subsequent removal of car. EFFECT: improved convenience in operation. 8 dwg

Description

The invention relates to mechanical engineering, in particular to equipment in automobile factories and at service stations of vehicles, namely, lifts for cars.

Known two-post lift for passenger cars, containing two racks, on the inner surface of which are installed two carriages with support elements for communication with the car and supported by cargo nuts of two cargo screws connected to synchronous electric drives (US 4124191 A, 11/07/1978 )

However, the known lift does not provide rotation of the car around its longitudinal axis.

The technical result of the claimed invention is to ensure the rotation of the car around its longitudinal axis.

This technical result is achieved by the fact that in a two-post lift for cars, containing two racks, on the inner surface of which are installed two carriages having supporting elements for communication with the car and supported by cargo nuts of two cargo screws connected to synchronous electric drives, racks are arranged to be placed between them along the longitudinal axis of the car with transition elements fixed to its body, the supporting elements of the carriages are made in de coaxial shafts, one of which is the drive shaft, is connected with a self-braking reversible electric drive of the transition element turning mechanism with the car body and has a tong grip at the end, forming a figured shape, for example, a tetrahedron with a groove under the disk of the first transition element mounted on the car, for fixing this element in the axial direction, the second shaft is mounted in the corresponding support element with the possibility of free rotation and longitudinal movement and has a tong the battle, forming a cylindrical shape for contacting with the cylindrical surface of the second transition element mounted on the car, rails are installed along the racks in contact with the travel switches mounted on the carriages, to ensure that the mechanism of turning the car at a height that excludes touching the floor of the car, and in the touch zone two transport elements are located with the floor wheels for moving the vehicle in the transverse direction for a distance sufficient to install t o lift and its subsequent removal.

Figure 1 shows a diagram of a 2-post lift, General view; figure 2 is a view of the lift from above; figure 3 and 4 is a longitudinal and transverse section of the figured coverage, mounted on the drive; figure 5 - adapter, mounted on the front of the car body and connected to the tong - in figure 3 and 4; 6 and 7 are a longitudinal and a cross section of a cylindrical grip; in Fig.8 - adapter, mounted on the rear of the car body and connected with a tong - in Fig.6 and 7.

The passenger car lift contains two struts 1 and 2 (FIGS. 1 and 2) mounted on separate bases 3 and 4, the first of which 3 is fixed, and the second 4 has the ability to be reinstalled depending on the length of the car (elements for reinstallation of rack 2 with base 4 not shown), a lift drive for moving the vehicle in the vertical direction, including two synchronous motors with transmission devices 5, two cargo screws 6 with cargo nuts 7, connected to the carriages 8 and 9, on which s supporting elements 10 and 11, in the form of two plates containing two coaxial shafts 12 and 13. One of these shafts, for example shaft 12, is the leading one. It is axially basified and connected with a self-braking reversible electric drive 14 using, for example, a wave gear as a reducer and has at its end located in the working area of the elevator a tong 15 with a ring bracket 16 (Figs. 3 and 4) that create a figured shape , for example, a tetrahedron "b" with a groove "a" under the axially locking disk "c" and a corresponding tetrahedron "g" of the transition element 17 (Figs. 1 and 5), mounted on the car 18.

The shaft 13 is made on the landing landing with the possibility of free rotation and longitudinal movement relative to the support element 11 and has a tong 19 (Fig.6 and 7) with a ring bracket 20, creating a cylindrical shape "e", which is in contact with the cylindrical surface "e" of the second transition element 21 (figures 1, 2 and 8), mounted on the car 18. In this case, for axial fixing of the tong 19 and the second transition element 21, as in the first case, the groove "a" and the disk "b" are used (Fig. 7 and 8).

Along each rack, in its upper part, strips are installed that are in contact with limit switches mounted on carriages (not shown), which provide the ability to turn on the vehicle's rotation mechanism at a certain height, which excludes the vehicle from touching the floor (two switches to increase reliability).

Two transport elements 22 and 23, for example, two conveyor belts or two floor conveyors (shown in the drawing), directed sideways from the elevator racks and ensuring the vehicle to travel at least equal to at least L = C + B / 2, where B is the width of the car; C is the greatest distance from the axis of the shafts 12 and 13 to the protruding parts of the lift in the direction of the vehicle.

As two transport elements, two narrow 4-wheel trolleys with lodges for the wheels of a car can be used.

The lift works as follows.

When assembling a car, a body with transitional devices 17 and 21 fixed instead of bumpers is mounted on transport elements 22 and 23 and moved to the working area - between two columns until the transitional elements 17 and 21 come in contact with grips 15 and 19, where the pre-folded staples 16 and 20 are pulled together . This ensures a rigid connection of the tong 15 with the adapter 17 and the connection of the tong 19 with the device 21, when the shaft 13 of the tong 19 can freely rotate and move along its axis, which provides compensation for inaccurate dimensions along the length of the cars within, for example, up to 500 mm.

After that, the body rises until the travel switches mounted on the supporting elements 10 and 11, hit a plate mounted on racks 1 and 2, which makes it possible to turn on the electric drive 14 of the rotation of the drive shaft 12 and with it the adapter 17 with the body 18. After asking the car on the lift any position convenient for assembly, the car is assembled. After assembly, the car is turned into a nominal position and lowered down until the wheels touch the floor. Next, the connection of the transitional devices 17 and 21 is released from the grips 15 and 19 due to the folding of the staples 16 and 20, after which they move the car to the side by a distance L. The car moves off the lift and the cycle repeats.

During maintenance of the car, the car, after removing the battery and draining the oil and fuel, drives into the transport elements 22 and 23, and in the future, all actions are similar to those described above.

For the case of using a 2-post lift with one drive mechanism, when the spindles of the racks are connected by a chain gear [1], to implement this invention, the chain is extended by the required length.

Thanks to the ability to turn the car at any angle, the technical capabilities of two-post lifts are expanded, resulting in improved quality and productivity in the assembly and maintenance of cars.

Claims (1)

Two-post lift for cars, containing two racks, on the inner surface of which are installed two carriages with support elements for communication with the car and supported by cargo nuts of two cargo screws connected to synchronous electric drives, characterized in that the racks are located along the longitudinal vehicle axles with the possibility of placing the latter between them together with transition elements fixed to its body, the supporting elements of the carriages are made in the form of coax shafts, one of which is the leading one, is connected with a self-braking reversible electric drive of the transition element turning mechanism with the car body and has a grip with a cap bracket at the end, forming a figured shape, for example a tetrahedron, with a groove under the disk of the first transition element mounted on the car, for fixing this element in the axial direction, the second shaft is mounted in the corresponding support element with the possibility of free rotation and longitudinal movement and has a grip with a spacer, image cylindrical for contact with the cylindrical surface of the second transition element mounted on the car, rails are installed along the racks in contact with the travel switches mounted on the carriages, to ensure that the mechanism for turning the car at a height that excludes the car touching the floor, and in the contact area of the car with the wheels of the floor are two transport elements for moving the car in the transverse direction to a distance sufficient to install the car on and the lift and its subsequent removal.

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