CN214828731U - Automobile lifter with anti-falling structure - Google Patents

Abstract

The utility model discloses an automobile lifter with anti-falling structure, which comprises a bridge frame, wherein the upper end surface of the bridge frame is provided with a double-shaft motor, the two ends of the bridge frame are fixedly connected with stand columns, the inside of the stand columns is connected with a screw rod in a rotating way, the double-shaft motor drives the two screw rods to rotate simultaneously, a lifting block is meshed and connected on the screw rod, and the lower end of the lifting block is hinged with two support arms capable of supporting an automobile, thereby avoiding the automobile from falling down quickly.

Description

Automobile lifter with anti-falling structure

Technical Field

The utility model relates to an automobile lifting goods technical field specifically is an automobile elevator with structure of preventing falling.

Background

The automobile lifting machine is equipment for lifting an automobile in the automobile maintenance process, the automobile is driven to a lifting machine station, the automobile can be lifted to a certain height through manual operation, the automobile is convenient to maintain, the lifting machine plays an important role in automobile maintenance, but the existing lifting machine is single in function, when power failure or equipment failure suddenly occurs, dangerous accidents such as sudden falling of the automobile easily occur, and serious threat is formed on personal safety of maintenance personnel, so the automobile lifting machine with the anti-falling structure is provided.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a car machine of lifting with structure of preventing falling to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a car machine of lifting with structure of falling is prevented, includes the crane span structure, the biax motor is installed to the up end of crane span structure, the equal fixedly connected with stand in both ends of crane span structure can use the bolt to fix the lower extreme of stand with ground, the inside of stand is rotated and is connected with the screw rod, the biax motor drives two screw rods simultaneously and rotates, the meshing is connected with the elevator on the screw rod, the lower extreme of elevator articulates there are two trailing arms that can lift the car, and the elevator can drive the trailing arm and reciprocate along the stand, rotates the screw rod, and the screw rod drives the trailing arm rebound through the elevator, lifts the car, the upper end of stand is equipped with the anti-falling mechanism that can prevent the fast tenesmus of elevator.

Preferably, the lifting grooves are formed in the side walls, close to each other, of the two stand columns, the bottom wall of each lifting groove is provided with a bottom groove, the lower end of each screw rod is rotatably connected with the bottom groove through a bearing, the screw rods can rotate smoothly through the bearings, the upper ends of the screw rods are fixedly connected with extension rods, one ends, far away from the screw rods, of the extension rods penetrate through the bridge frame and are fixedly connected with transverse conical teeth, the bearings are also arranged at the upper ends and the lower ends of the extension rods, the extension rods can rotate smoothly in the bridge frame 1, transmission rods are fixedly connected to output shafts at two ends of the double-shaft motor, the double-shaft motor drives the transmission rods at two ends to rotate synchronously, one ends, far away from the double-shaft motor, of the transmission rods are fixedly connected with vertical conical teeth meshed with the transverse conical teeth, and a plurality of supporting blocks capable of supporting the transmission rods are fixedly connected to the upper end face of the bridge frame.

Preferably, prevent weighing down the mechanism and include the cylinder piece, the lateral wall upper end fixed connection of cylinder piece and stand, the inside rotation of cylinder piece is connected with the pivot, fixedly connected with sprocket in the pivot, fixedly connected with backplate on the lateral wall of crane span structure is kept away from to the stand, sliding connection has the pouring weight from top to bottom in the backplate, the up end fixedly connected with chain of pouring weight, the one end that the pouring weight was kept away from to the chain is walked around behind the sprocket and the upper end fixed connection of lifter, and the pouring weight gives a decurrent pulling force of chain all the time.

Preferably, the inside of cylinder piece is opened there is the chamber of preventing weighing down, the lateral wall internal rotation that prevents weighing down the chamber is connected with the swivel, fixedly connected with slide bar on the swivel, the one end of slide bar has the piece of preventing weighing down through preventing weighing down spring sliding connection, prevents weighing down spring and gives and prevents weighing down pulling force of piece one to preventing weighing down the spring direction, it has the transmission groove to prevent weighing down to open on the piece, the one end fixedly connected with of pivot and the U-shaped piece of transmission groove looks adaptation, the U-shaped piece extends in the transmission groove and cooperates with the transmission groove, fixedly connected with prevents weighing down the tooth on the lateral wall of chamber, the one end fixedly connected with of preventing weighing down the piece and the locking tooth of preventing weighing down tooth looks adaptation, the focus of preventing weighing down the piece is located the one end that is close to the locking tooth.

Preferably, the two side walls of the bridge frame are both provided with sliding grooves, and cover plates are inserted in the sliding grooves.

Compared with the prior art, the beneficial effects of the utility model are that:

the utility model drives the transmission rods at both ends to rotate synchronously by the double-shaft motor, the extension rod of the transmission rod drives the screw rod to rotate, the screw rod drives the supporting arms to move up and down by the lifting block, and the supporting arms at both sides move synchronously, thereby ensuring the stability of the lifting of the automobile;

the utility model discloses a when the slow downstream of elevator block, prevent that the rotation of weighing down the piece is also comparatively slow, prevent that the centrifugal force of weighing down the piece is not enough to overcome the pulling force of preventing weighing down the spring this moment, when the quick downstream of elevator block, the slew velocity of preventing weighing down the piece is very fast, receive centrifugal force's influence, it can carry out the displacement and makes locking tooth and prevent weighing down the tooth and mesh to prevent weighing down the piece, prevent that the piece weighs down this moment, the U-shaped piece, the pivot just can not rotate, the elevator just can be pulled to the chain to avoid the car to weigh down fast.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention;

fig. 2 is a cross-sectional view of the bridge frame and the upright post of the present invention;

fig. 3 is an enlarged view of a point a in fig. 2 according to the present invention;

fig. 4 is an enlarged view of the position B in fig. 2 according to the present invention;

fig. 5 is an enlarged view of the point C in fig. 2 according to the present invention;

FIG. 6 is a cross-sectional view of the cylindrical block and the rotating shaft of the present invention;

FIG. 7 is a cross-sectional view of the swivel and slide rod of the present invention;

FIG. 8 is a cross-sectional view of the U-shaped member and boss of the present invention;

fig. 9 is an exploded view of the chute and the cover plate of the present invention.

In the figure: 1. the anti-falling device comprises a bridge frame, 2, a double-shaft motor, 3, an upright post, 4, a screw rod, 5, a lifting block, 6, a bracket arm, 7, a lifting groove, 8, a bottom groove, 9, a bearing, 10, a cylindrical block, 11, an extension rod, 12, a transverse bevel gear, 13, a transmission rod, 14, a vertical bevel gear, 15, a support block, 16, a rotating shaft, 17, a chain wheel, 18, a protective plate, 19, a weight, 20, a chain, 21, an anti-falling cavity, 22, a rotating ring, 23, a sliding rod, 24, an anti-falling spring, 25, an anti-falling block, 26, a transmission groove, 27, a U-shaped piece, 28, an anti-falling tooth, 29, a locking tooth, 30, a sliding groove, 31, a cover plate, 32, a controller, 33 and a boss.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-9, the present invention provides a technical solution: a car lifting machine with a falling-preventing structure comprises a bridge frame 1, wherein a double-shaft motor 2 is installed on the upper end face of the bridge frame 1, the double-shaft motor 2 is connected with an external power supply through a wire, columns 3 are fixedly connected to the two ends of the bridge frame 1, bolts can be used for fixing the lower ends of the columns 3 to the ground, the two columns 3 support the bridge frame 1, a screw rod 4 is connected to the column 3 in a rotating mode, the double-shaft motor 2 drives the two screw rods 4 to rotate simultaneously, a lifting block 5 is connected to the screw rod 4 in a meshed mode, when the screw rod 4 rotates, the lifting block 5 is driven to move up and down by the screw rod 4, two supporting arms 6 capable of supporting a car are hinged to the lower end of the lifting block 5, a rubber disc (used for increasing the area, reducing supporting damage and meanwhile, an anti-slip bulge is arranged on the supporting arms 6, and is more stable), the lifting block 5 can drive the supporting arm 6 to move up and down along the upright post 3, the supporting arm 6 is lowered to the lowest end and opens the supporting arm 6 into a state as shown in figure 1, at the moment, the automobile can be moved to the lower part of the lifting machine, then the supporting arm 6 is rotated to the direction of the bottom of the automobile into a state as shown in figure 2, the screw rod 4 is rotated, the screw rod 4 drives the supporting arm 6 to move upwards through the lifting block 5, the supporting arm 6 lifts the automobile, when the automobile is lifted to the highest end of the upright post 3, the bridge frame 1 reserves a space for the roof, the upper end of the upright post 3 is provided with an anti-falling mechanism capable of preventing the lifting block 5 from falling fast, and when the lifting block 5 falls fast, the anti-falling mechanism can pull the lifting block 5 to prevent the automobile from falling suddenly.

The structure that the screw rod 4 is driven to rotate is adopted, specifically, the side walls of two upright posts 3 which are close to each other are provided with lifting grooves 7, the bottom wall of each lifting groove 7 is provided with a bottom groove 8, the lower end of each screw rod 4 is rotatably connected with the bottom groove 8 through a bearing 9, as shown in figure 3, the bearings 9 enable the screw rods 4 to rotate smoothly, the upper ends of the screw rods 4 are fixedly connected with extension rods 11, one ends of the extension rods 11, far away from the screw rods 4, penetrate through the bridge frame 1 and are fixedly connected with transverse conical teeth 12, the upper ends and the lower ends of the extension rods 11 are also provided with bearings, so that the extension rods 11 can rotate smoothly in the bridge frame 1, output shafts at two ends of the double-shaft motor 2 are fixedly connected with transmission rods 13, the double-shaft motor 2 drives the transmission rods 13 at two ends to rotate synchronously, one end of the transmission rods 13, far away from the double-shaft motor 2, is fixedly connected with vertical conical teeth 14 which are meshed with the transverse conical teeth 12, in the drawing, a transverse bevel gear 12 and a vertical bevel gear 14 are only shown schematically, as shown in fig. 4, a double-shaft motor 2 drives a transmission rod 13 to rotate, the transmission rod 13 drives the transverse bevel gear 12 to rotate through the vertical bevel gear 14, the transverse bevel gear 12 drives an extension rod 11 to rotate, the extension rod 11 drives a screw rod 4 to rotate, a plurality of supporting blocks 15 capable of supporting the transmission rod 13 are fixedly connected to the upper end face of the bridge frame 1, as shown in fig. 9, the supporting blocks 15 support the transmission rod 13, and the transmission rod 13 is guaranteed to rotate stably;

as shown in fig. 2, the lifting block 5 is restricted by the lifting slot 7 and cannot rotate, when the screw rod 4 rotates, the screw rod 4 drives the supporting arms 6 to move up and down through the lifting block 5, and the double-shaft motor 2 drives the transmission rods 13 at the two ends to rotate synchronously, so that the supporting arms 6 at the two sides as shown in fig. 1 move up and down synchronously, and the automobile is lifted stably;

the controller 32 is installed on the side wall of any upright post 3, the controller 32 is provided with two lifting buttons for respectively controlling the double-shaft motor 2 to rotate forwards and backwards, when the double-shaft motor 2 rotates forwards, the supporting arm 6 moves upwards, and when the double-shaft motor 2 rotates backwards, the supporting arm 6 moves downwards.

The rotating shaft 16 is driven to rotate by adopting the following structure, specifically, the anti-falling mechanism comprises a cylindrical block 10, the cylindrical block 10 is fixedly connected with the upper end of the side wall of the upright post 3, the rotating shaft 16 is rotatably connected inside the cylindrical block 10, a chain wheel 17 is fixedly connected on the rotating shaft 16, a guard plate 18 is fixedly connected on the side wall of the upright post 3 far away from the bridge frame 1, a weight 19 is vertically and slidably connected in the guard plate 18, the position of the weight 19 is limited by the guard plate 18 to avoid the back-and-forth swing of the weight 19, a chain 20 is fixedly connected to the upper end surface of the weight 19, the chain wheel 17 and the chain 20 are only shown in the figure, one end of the chain 20 far away from the weight 19 bypasses the chain wheel 17 and is fixedly connected with the upper end of the lifting block 5, as shown in figure 5, the weight 19 always provides a downward pulling force for the chain 20, when the lifting block 5 moves upwards, the weight 19 pulls the chain 20 downwards, chain 20 drives sprocket 17 anticlockwise rotation, and sprocket 17 drives pivot 16 anticlockwise rotation, and when elevator 5 moved down, elevator 5 can pull chain 20 downwards, and chain 20 just can drive pivot 16 through sprocket 17 and carry out clockwise rotation.

The structure is adopted to prevent the rotating shaft 16 from rotating too fast, specifically, the inside of the cylindrical block 10 is provided with an anti-falling cavity 21, the side wall of the anti-falling cavity 21 is rotatably connected with a rotating ring 22, the rotating ring 22 is fixedly connected with a sliding rod 23, as shown in fig. 7, the sliding rod 23 can rotate along with the rotating ring 22, one end of the sliding rod 23 is slidably connected with an anti-falling block 25 (slidably connected with a projection on the anti-falling block 25) through an anti-falling spring 24, as shown in fig. 7, the anti-falling block 25 is provided with a pulling force towards the anti-falling block 24 direction by the anti-falling spring 24, the anti-falling block 25 is provided with a transmission groove 26, a boss 33 connected with the anti-falling block 25 is arranged in the transmission groove 26, one end of the rotating shaft 16 is fixedly connected with a U-shaped element 27 matched with the transmission groove 26, the U-shaped element 27 extends into the transmission groove 26 and is matched with the transmission groove 26, and the side wall of the anti-falling cavity 21 is fixedly connected with anti-falling teeth 28, one end of the anti-falling block 25 is fixedly connected with a locking tooth 29 matched with the anti-falling tooth 28, the gravity center of the anti-falling block 25 is positioned at one end close to the locking tooth 29, as shown in fig. 7, and the gravity center of the anti-falling block 25 is positioned above the U-shaped piece 27;

the process is as follows: the speed of driving the lifting block 5 to move up and down through the double-shaft motor 2 is slow, so that the chain 20 drives the rotating shaft 16 to rotate slowly through the chain wheel 17 at the moment, as shown in fig. 5, when the lifting block 5 moves downwards, the rotating shaft 16 can drive the U-shaped piece 27 to rotate slowly clockwise, as shown in fig. 7, one end of the U-shaped piece 27 rotating clockwise can prop against the side wall of the boss 33, at the moment, the U-shaped piece 27 can drive the anti-falling block 25 to rotate slowly clockwise, the anti-falling block 25 drives the rotating ring 22 to rotate clockwise through the sliding rod 23, and therefore the anti-falling spring 24 can always give a pulling force to the anti-falling block 25 (at the moment, the centrifugal force of the anti-falling block 25 is not enough to overcome the pulling force of the anti-falling spring 24);

when power is suddenly cut off or equipment fails and the lifting block 5 rapidly moves downwards, the lifting block 5 rapidly pulls the chain 20, at the moment, the rotating shaft 16 drives the U-shaped piece 27 to rapidly rotate clockwise, the U-shaped piece 27 drives the anti-falling piece 25 to rapidly rotate clockwise, because the gravity center of the anti-falling piece 25 is positioned at one end close to the locking teeth 29, the anti-falling piece 25 slides along the sliding rod 23 in the direction of the locking teeth 29 under the action of centrifugal force, for example, the locking teeth 29 get thrown to the upper side (in any direction) in the state shown in fig. 8, at the moment, the locking teeth 29 are meshed with the anti-falling teeth 28, meanwhile, the rotation of the U-shaped piece 27 enables one end of the U-shaped piece to be propped against one end of the boss 33 far away from the locking teeth 29, so that the anti-falling spring 24 cannot pull the anti-falling piece 25 to reset, the locking teeth 29 are always meshed with the anti-falling teeth 28, and the anti-falling piece 25 cannot continue to rotate clockwise, the U-shaped part 27 abutting against the boss 33 cannot rotate clockwise, the rotating shaft 16 drives the chain wheel 17 to stop rotating, the chain wheel 17 pulls the lifting block 5 through the chain 20, and the lifting block 5 moving downwards quickly is pulled, so that the automobile is prevented from falling quickly;

referring to FIG. 8, only when the U-shaped member 27 rotates counterclockwise by a certain angle, one end of the U-shaped member 27 is separated from one end of the boss 33, and the anti-falling spring 24 pulls the anti-falling block 25 to reset (see FIG. 7); when the U-shaped part 27 continues to rotate anticlockwise (the lifting block 5 moves upwards), the other end of the U-shaped part 27 abuts against one end, close to the locking teeth 29, of the boss 33 to enable the anti-falling block 25 to move downwards, the U-shaped part 27 is allowed to be in a position, meanwhile, the lower end of the anti-falling block 25 cannot be locked with the locking teeth 29 without teeth, and therefore the anti-falling block can rotate smoothly, and the anticlockwise rotation can not be influenced in the process.

Specifically, the sliding grooves 30 are formed in the two side walls of the bridge frame 1, the cover plate 31 is inserted in the sliding grooves 30, and after the cover plate 31 is inserted in the sliding grooves 30, the cover plate 31 covers the transmission shaft 13, so that the transmission shaft 13, the transverse bevel teeth 12 and the vertical bevel teeth 14 are prevented from being exposed outside for a long time.

The working principle is as follows: the speed of driving the lifting block 5 to move up and down through the double-shaft motor 2 is slow, so that the chain 20 drives the rotating shaft 16 to rotate slowly through the chain wheel 17, as shown in fig. 5, when the lifting block 5 moves downwards, the rotating shaft 16 can drive the U-shaped part 27 to rotate slowly clockwise, as shown in fig. 7, one end of the U-shaped part 27 rotating clockwise can prop against the side wall of the boss 33, at the moment, the U-shaped part 27 can drive the anti-falling block 25 to rotate slowly clockwise, the anti-falling block 25 drives the rotating ring to rotate clockwise through the sliding rod 23, and therefore the anti-falling spring 24 can always give a pulling force to the anti-falling block 25;

when power is suddenly cut off or equipment fails and the lifting block 5 rapidly moves downwards, the lifting block 5 rapidly pulls the chain 20, at the moment, the rotating shaft 16 drives the U-shaped piece 27 to rapidly rotate clockwise, the U-shaped piece 27 drives the anti-falling piece 25 to rapidly rotate clockwise, because the gravity center of the anti-falling piece 25 is positioned at one end close to the locking teeth 29, the anti-falling piece 25 slides along the sliding rod 23 towards the locking teeth 29 under the action of centrifugal force, as shown in fig. 8, the locking teeth 29 move along with the anti-falling piece 25 and are meshed with the anti-falling teeth 28, at the moment, one end of the U-shaped piece 27 props against one end of the boss 33 away from the locking teeth 29, so that the anti-falling spring 24 cannot pull the anti-falling piece 25, the locking teeth 29 are always meshed with the anti-falling teeth 28, the anti-falling piece 25 cannot continuously rotate clockwise, and the U-falling piece 27 propping against the boss 33 cannot continuously rotate clockwise, the rotating shaft 16 drives the chain wheel 17 to stop rotating, the chain wheel 17 pulls the lifting block 5 through the chain 20, and the lifting block 5 which moves downwards quickly is pulled, so that the automobile is prevented from falling quickly.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (5)

1. The utility model provides a car machine of lifting with prevent structure of falling, includes crane span structure (1), biax motor (2) are installed to the up end of crane span structure (1), the equal fixedly connected with stand (3) in both ends of crane span structure (1), its characterized in that: the inside of stand (3) is rotated and is connected with screw rod (4), two screw rods (4) are driven simultaneously and are rotated in biax motor (2), the meshing is connected with elevator (5) on screw rod (4), the lower extreme of elevator (5) articulates there are two trailing arms (6) that can lift the car, the upper end of stand (3) is equipped with and prevents the quick tenesmic mechanism of elevator (5).

2. The vehicle lifting machine with the fall-preventing structure as claimed in claim 1, wherein: all open on the lateral wall that two stands (3) are close to each other and have lift groove (7), it has kerve (8) to open on the diapire of lift groove (7), the lower extreme of screw rod (4) passes through bearing (9) and is connected with kerve (8) rotation, the upper end fixedly connected with extension rod (11) of screw rod (4), the one end that screw rod (4) were kept away from in extension rod (11) runs through crane span structure (1) and horizontal awl tooth (12) of fixedly connected with, equal fixedly connected with transfer line (13) on the output shaft at biax motor (2) both ends, the one end fixedly connected with of biax motor (2) and vertical awl tooth (14) of horizontal awl tooth (12) engaged with are kept away from in transfer line (13), the up end fixedly connected with of crane span structure (1) is a plurality of supporting shoes (15) that can provide the support to transfer line (13).

3. The vehicle lifting machine with the fall-preventing structure as claimed in claim 1, wherein: prevent weighing down the mechanism and include cylinder piece (10), the lateral wall upper end fixed connection of cylinder piece (10) and stand (3), the inside rotation of cylinder piece (10) is connected with pivot (16), fixedly connected with sprocket (17) on pivot (16), fixedly connected with backplate (18) on the lateral wall that crane span structure (1) was kept away from in stand (3), sliding connection has pouring weight (19) about in backplate (18), the up end fixedly connected with chain (20) of pouring weight (19), the one end that pouring weight (19) were kept away from in chain (20) is walked around the upper end fixed connection of sprocket (17) back and elevator (5).

4. The vehicle lifting machine with the fall-preventing structure as claimed in claim 3, wherein: open the inside of cylinder piece (10) has anti-falling chamber (21), the lateral wall internal rotation that prevents falling chamber (21) is connected with swivel (22), fixedly connected with slide bar (23) on swivel (22), the one end of slide bar (23) has prevents falling piece (25) through preventing weighing down spring (24) sliding connection, it has transmission groove (26) to open on preventing falling piece (25), the one end fixedly connected with of pivot (16) and U-shaped spare (27) of transmission groove (26) looks adaptation, it prevents weighing down tooth (28) to fixedly connected with on the lateral wall of chamber (21), the one end fixedly connected with of preventing falling piece (25) and the locking tooth (29) of preventing weighing down tooth (28) looks adaptation.

5. The vehicle lifting machine with the fall-preventing structure as claimed in claim 1, wherein: the two side walls of the bridge frame (1) are provided with sliding grooves (30), and cover plates (31) are inserted in the sliding grooves (30).

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