CN110733873A - lifting drive system for medium-length and long vehicle bodies - Google Patents

Abstract

The invention relates to lifting driving systems for medium and long vehicle bodies, which comprise a driving motor (31), a plurality of belt wheels and a plurality of eccentric rocker arms, wherein the belt wheels are coaxially connected with the eccentric rocker arms, the belt wheels are synchronously connected with the driving motor (31), two ends of a shaft are provided with expansion sleeves (38), each expansion sleeve (38) comprises an expansion sleeve inner ring (381) and an expansion sleeve outer ring (382), the expansion sleeve inner ring (381) is abutted with the shaft, and the expansion sleeve outer ring (382) is abutted with a hub of the belt wheels or the eccentric rocker arms.

Description

lifting drive system for medium-length and long vehicle bodies

Technical Field

The invention relates to the field of vehicle production, in particular to a middle-length vehicle body driving system.

Background

The main process flow of the lifter is that the sledge is used as a tool clamp for bearing the vehicle body, the bearing vehicle body is conveyed to a corresponding station, the lifter lifts the bearing vehicle body and the sledge to a corresponding height, the lower -step rolling machine operates to drive the vehicle body and the sledge to synchronously walk and convey to a lower station, the lifter descends to return to the original point, and the steps are repeated.

The existing lifting driving system for conveying long and medium vehicle bodies on the market at present has defects, and mainly comprises the following points:

(1) the roller chain transmission of the driving system has disadvantages relative to the transmission of a toothed belt, namely, the roller chain and a chain wheel are easy to wear mutually in a working punch, the friction clearance between the chain wheel and the chain causes unstable equipment operation, the chain is easy to be sent off, and a tensioning device is also required to be installed to ensure the precision ;

(2) secondly, lubrication is very important for chain transmission, the chain can be abraded only by lubrication, the service life is prolonged, oil or lubricating grease is needed for lubrication, so that the working environment is influenced by lubricating grease, the cost is increased, simple manual lubrication is realized, and other auxiliary components are needed in a complicated way;

(3) the chain transmission also has the defects of noise, heavy weight, low efficiency and the like, and is gradually replaced by a high-quality belt transmission under the allowable condition.

Disclosure of Invention

The invention aims to overcome the defects of the prior art and provide lifting driving systems for medium and long vehicle bodies, which have the advantages of high and smooth running precision, reduced downtime, quiet running, stable structure and strong bearing capacity.

The purpose of the invention can be realized by the following technical scheme:

lifting drive system for medium and long vehicle bodies, which comprises a drive motor, a plurality of belt wheels and a plurality of eccentric rocker arms, wherein the belt wheels are coaxially connected with the eccentric rocker arms, the belt wheels are synchronously connected with the drive motor, the two ends of the shaft are provided with expansion sleeves, each expansion sleeve comprises an expansion sleeve inner ring and an expansion sleeve outer ring, the expansion sleeve inner ring is abutted to the shaft, and the expansion sleeve outer ring is abutted to the wheel hub of the belt wheel or the eccentric rocker arm.

, the pulleys include a motor pulley, a th primary pulley, a second primary pulley and a secondary pulley, the eccentric rocker includes a primary eccentric rocker and a secondary eccentric rocker, the motor pulley is coaxially connected with a motor shaft of the driving motor, the th primary pulley, the primary eccentric rocker and the second primary pulley are coaxially connected, the secondary pulley and the secondary eccentric rocker are coaxially connected, the motor pulley and the th primary pulley are synchronously connected, the secondary pulley and the secondary pulley are synchronously connected, the secondary pulley and the second primary pulley have the same circumferential dimension, the motor starts the motor pulley on the shaft to operate, the drives the th primary pulley to operate, the drives the secondary pulley to operate by the second primary pulley which is coaxially connected with the primary shaft, the eccentric rocker on the synchronous secondary shaft makes a circular motion to drive the lifting bracket to move up and down, when the eccentric rocker moves down from the top end, the lifting bracket falls down when the eccentric rocker rotates , the lifting bracket completes a circular motion of the lifting bracket and the secondary pulley, and the lifting bracket achieves a circular motion of 361, and the synchronous lifting performance of the lifting pulley is ensured.

, the main belt wheel, the main eccentric rocker arm and the second main belt wheel, the auxiliary belt wheel and the auxiliary eccentric rocker arm are coaxially connected by a shaft, and the shaft is arranged on the shaft mounting plate through a shaft seat.

, the inner ring of the expansion sleeve is abutted with the shaft, and the outer ring of the expansion sleeve is abutted with the hubs of the primary belt pulley, the primary eccentric rocker arm, the second primary belt pulley, the secondary belt pulley or the secondary eccentric rocker arm.

, synchronous belts are adopted to connect the belt wheels in a circular arc tooth matching way, the circular arc tooth matching connection structure improves the shearing force, reduces the noise and improves the transmission efficiency, the synchronous belts are high-strength synchronous belts (gate. Poly. chain. GT, carbon. TM.) of Gaozi company, the belt core wires of the synchronous belts are super high-grade carbon fibers used as the material of the belt tension line, the service life of the belt tension line is 3-4 times that of a chain, the synchronous belts have high strength and extremely light weight, the elongation is higher, the flexibility is good, the synchronous belts are oil-resistant and chemical corrosion-resistant, the surface of the nylon teeth reduces the abrasion and is free from lubrication, the working environment can be from-54 ℃ to 85 ℃, the material of the belt wheels is 45# steel, the processing is easy, and the cost is low.

, the synchronous belt is made of carbon fiber with long service life and less wear.

, the material of the belt wheel and the eccentric rocker arm is 45# steel.

the expanding sleeve also includes a locking bolt and a bolt hole, when the locking bolt is screwed into the bolt hole, the inner ring and the shaft of the expanding sleeve, the outer ring and the hub of the expanding sleeve generate huge holding force to realize the butt, in the connection of the wheel or the shaft, the expanding sleeve is to screw the bolt to generate huge holding force between the inner ring and the shaft, and between the outer ring and the hub of the expanding sleeve, to realize kinds of no-key connection device between the machine part and the shaft, especially suitable for alternating load.

, the eccentric rocker arms are provided with cams at their ends, which are in contact with the lifting guide rails to be lifted.

Compared with the prior art, the invention has the following advantages:

(1) the belt wheel and the synchronous belt are matched by circular arc teeth, the shearing force is improved by a circular arc tooth type structure, the noise is low, the transmission efficiency is improved, in addition, the synchronous belt is a force-retention strong synchronous belt of Ganz company, a belt core wire of the synchronous belt is an ultrahigh-grade carbon fiber used as a belt tension wire material, the service life of the synchronous belt is 3-4 times that of a chain, the synchronous belt has high strength and extremely light weight, the elongation is higher, the flexibility is good, the oil resistance and the chemical corrosion resistance are realized, and the surface of a nylon tooth is reduced in abrasion and is free from lubrication;

(2) the driving device has the advantages of circular arc teeth and a synchronous belt with strong force retention, thereby reducing the downtime, avoiding lubricant, avoiding cleaning, avoiding the need of tensioning the transmission system again, having no extensibility and creating clean and quiet environments;

(3) the connection between the main shaft and the auxiliary shaft of the driving device, the main belt wheel and the eccentric rocker arm is connected by using the expansion sleeve, in the connection of the wheel or the shaft, the large holding force is generated between the inner ring and the shaft and between the outer ring and the wheel hub by screwing up the high-strength bolt, so that key-free connection devices of the machine parts and the shaft are realized, and the device is particularly suitable for alternating load;

(4) in addition, the expansion sleeve has long service life and high strength, does not weaken a key slot of a connected piece and does not move relatively depending on friction force, and does not generate friction in work;

(5) the material of band pulley and eccentric rocking arm is 45# steel, and not only intensity is higher, is enough to safely support also can directly be convenient for the maintenance with the jacking of lift bracket.

Drawings

FIG. 1 is a perspective view of a drive mechanism in an embodiment;

FIG. 2 is a front view of the driving mechanism in the embodiment;

FIG. 3 is a top view of the drive mechanism in an embodiment;

FIG. 4 is a front view of the right portion of the drive mechanism in the embodiment;

FIG. 5 is a top view of the right portion of the drive mechanism in an embodiment;

FIG. 6 is a side view of the secondary pulley in the embodiment;

FIG. 7 is a plan view of an expansion sleeve in the embodiment;

FIG. 8 is a sectional view of the expansion sleeve in the embodiment;

the numbers in the figure show that the driving motor 31, the motor belt wheel 32, the th primary belt wheel 33, the primary eccentric rocker arm 34, the secondary primary belt wheel 35, the secondary belt wheel 36, the secondary eccentric rocker arm 37, the cam 371, the expansion sleeve 38, the expansion sleeve inner ring 381, the expansion sleeve outer ring 382, the locking bolt 383 and the bolt hole 384.

Detailed Description

The invention is described in detail below with reference to the figures and specific embodiments.

Example (b): lifting driving system for Naveco bridolin vehicle body lifter

A lifting driving system for medium and long vehicle bodies, as shown in fig. 1-5, the system comprises a driving motor 31, a motor pulley 32, a th primary pulley 33, a primary eccentric rocker 34, a secondary primary pulley 35, a secondary pulley 36 and a secondary eccentric rocker 37, the motor pulley 32 is coaxially connected with a motor shaft of the driving motor 31, the primary pulley 33, the primary eccentric rocker 34 and the secondary primary pulley 35 are coaxially connected, the secondary pulley 36 is coaxially connected with the secondary eccentric rocker 37, the motor pulley 32 is synchronously connected with the primary pulley 33, the secondary pulley 35 is synchronously connected with the secondary pulley 36, the secondary pulley 36 is in the same circumferential dimension as the secondary pulley 35, the motor starts the motor pulley on the shaft to operate, the step drives the primary pulley to operate, the step the secondary pulley drives the secondary pulley to operate, the eccentric rocker on the secondary shaft makes a circumferential motion to drive the lifting bracket to move up and down, when the eccentric rocker is about to move up to the top end, the lifting bracket is lifted by the eccentric rocker, the eccentric rocker moves down and the lifting bracket 364, the lifting bracket moves up and the top end of the eccentric rocker is in the same circumferential dimension as the arrow 364.

The motor belt wheel 32 is connected with the th main belt wheel 33, the second main belt wheel 35 is connected with the auxiliary belt wheel 36 in an arc tooth matching mode, the synchronous belt is made of carbon fibers with long service life and small abrasion, the arc tooth matching connection structure improves shearing force, low noise and transmission efficiency, the synchronous belt is a high-force-retention synchronous belt (gate. poly. chain. GT, carbon. TM.) of Gaozz company, a belt core wire of the synchronous belt is made of ultra-high-grade carbon fibers serving as a belt tension wire material, the service life of the synchronous belt is 3-4 times that of a chain, the synchronous belt has high strength and extremely light weight, the elongation is higher, the elongation is good, oil resistance and chemical corrosion resistance, abrasion and lubrication are reduced on the surface of nylon teeth, the working environment can be from-54 ℃ to 85 ℃, the material of the belt wheel is 45# steel, machining is easy, cost is low, the th main belt wheel 33, the main eccentric rocker 34 is connected with the second main belt wheel 35, the auxiliary belt wheel 36 is connected with the auxiliary eccentric rocker 37 by a shaft, and the shaft is installed on the shaft installation.

As shown in fig. 6-8, the two ends of the shaft are provided with the expansion sleeves 38, the expansion sleeves 38 comprise expansion sleeve inner rings 381, expansion sleeve outer rings 382, locking bolts and bolt holes, the expansion sleeve inner rings 381 are abutted with the shaft, and the expansion sleeve outer rings 382 are respectively abutted with the primary belt pulley 33, the primary eccentric rocker arm 34, the second primary belt pulley 35, the secondary belt pulley 36 or the hub of the secondary eccentric rocker arm 37.

Claims (9)

1, A lifting driving system for medium and long vehicle bodies, which comprises a driving motor (31), a plurality of belt wheels and a plurality of eccentric rocker arms, wherein the belt wheels are coaxially connected with the eccentric rocker arms, the belt wheels are synchronously connected with the driving motor (31), the lifting driving system is characterized in that,

the shaft two ends be equipped with expand set (38), expand set (38) including expand set inner ring (381), expand set outer ring (382), expand set inner ring (381) and axle butt, expand set outer ring (382) and band pulley or eccentric rocking arm's wheel hub butt.

2. A hoist drive system for medium length vehicle body, as claimed in claim 1, wherein the pulleys include a motor pulley (32), a primary pulley (33), a secondary primary pulley (35) and a secondary pulley (36), the eccentric rocker includes a primary eccentric rocker (34) and a secondary eccentric rocker (37), the motor pulley (32) is coaxially connected to the motor shaft of the driving motor (31), the primary pulley (33), the primary eccentric rocker (34) and the secondary primary pulley (35) are coaxially connected, the secondary pulley (36) and the secondary eccentric rocker (37) are coaxially connected, the motor pulley (32) and the primary pulley (33) are synchronously connected, the secondary pulley (35) and the secondary pulley (36) are synchronously connected, and the secondary pulley (36) and the secondary primary pulley (35) have the same circumferential dimension.

3. A lifting drive system for medium and long vehicle bodies, according to claim 2, characterized in that the th primary pulley (33), the primary eccentric rocker (34) and the secondary pulley (35) are coaxially connected, and the secondary pulley (36) and the secondary eccentric rocker (37) are coaxially connected, and the shaft is mounted on the shaft mounting plate through a shaft seat.

4. The lift driving system of kinds of medium-length vehicle bodies as claimed in claim 2, wherein the inner expanding sleeve ring (381) abuts against the shaft, and the outer expanding sleeve ring (382) abuts against the hubs of the primary pulley (33), primary eccentric rocker (34), secondary pulley (35), secondary pulley (36) or secondary eccentric rocker (37), respectively.

5. The lift driving system for medium length vehicle bodies according to claim 1, wherein the pulleys are connected by a synchronous belt with circular arc teeth.

6. The kinds of elevating drive system for medium and long car bodies as claimed in claim 5, wherein the material of said timing belt is carbon fiber.

7. The lift drive system of medium length vehicle bodies, according to claim 1, wherein the pulley and the eccentric rocker arm are made of 45# steel.

8. The kind of lift actuating system for the medium and long car body according to claim 1, characterized in that, the expansion sleeve (38) further includes locking bolts (383) and bolt holes (384), when the locking bolts (383) are screwed into the bolt holes (384), a great holding force is generated between the expansion sleeve inner ring (381) and the shaft, and between the expansion sleeve outer ring (382) and the hub, so as to realize the abutment.

9. The lift driving system of kinds of medium and long vehicle bodies, according to claim 1, wherein the eccentric rocker arms are each provided at an end thereof with a cam (371), and the cam (371) abuts against a lift rail to be lifted.

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