GB2572053A

GB2572053A - Suspended rail conveying system for vehicle manufacturing workshops

Info

Publication number: GB2572053A
Application number: GB1901333.3A
Authority: GB
Inventors: Lai Jinyuan
Original assignee: Sichuan Xingzhi Zhihui Intellectual Property Operation Co Ltd
Current assignee: Sichuan Xingzhi Zhihui Intellectual Property Operation Co Ltd
Priority date: 2019-01-31
Filing date: 2019-01-31
Publication date: 2019-09-18
Anticipated expiration: 2039-01-31
Also published as: GB2572053B; GB201901333D0

Abstract

A suspended /overhead rail conveying system comprises a rail 11 with a plurality of perpendicular interceptor crossbars 12, a frame 1, a suspended column 10, and an emergency brake mechanism 5. Two axles 31, 32 with one end connected to frame 1 and another end to rollers 2 are associated with rail 11. First axle 31 has a deceleration sleeve 4 with a plurality of circumferential gears and second axle 32 has a gear box. Emergency brake mechanism 5, with a second suspended column 51 and a placement board 52 with a limit tube 56 also has an hydraulic cylinder (534, Fig 2), with an oil pump (531). Oil pump (531) is electrically connected to a controller 9 on the frame 1and first and second oil ports (532, 533). A grooved deceleration frame fixed on a moving end of a second piston (537) and a pawl 55 facing a sleeve 4 is positioned inside the grooves and an emergency brake lever 54 passing through the limit tube 56 and is located between two interceptor bars 12.

Description

SUSPENDED RAIL CONVEYING SYSTEM FOR VEHICLE

MANUFACTURING WORKSHOPS

FIELD OF THE INVENTION [0001] The present invention relates to the field of the vehicle manufacturing machinery, more particularly to a suspended rail conveying system for vehicle manufacturing workshops.

BACKGROUND OF THE IN VENTION [0002] A suspended conveyor is also called overhead conveyor, and is used inside the workshop and between the workshops for the continuous conveying flow of the work pieces. During the process of the continuous conveying flow', various sequential process operations on the work pieces, such as surface treatment, painting, drying, cooling, products off-line, etc., can be performed. Because it can fully utilize the space and cooperate with the. ground operations, it is widely applied in die modern manufacturing lines of the vehicle factories.

[0003] The traditional suspended rail conveying system comprises an overhead rail.

suspended conveyance vehicles, etc., wherein the suspended conveyance vehicle comprises rollers, axles, drive system, braking system, suspensions, etc. The suspended conveyance vehicles are controlled by the background control system, therefore when the background control system fails and cannot control one of die suspended conveyance vehicles, resulting in that the speed of the said suspended conveyance vehicle is different from the speed of the other suspended conveyance vehicles, the suspended conveyance vehicles will collide with each other, causing the damage of the suspended conveyance vehicles, the collision or even the fall and damage of die suspended work pieces, and the increasing of the process cost; Furthermore, when an emergency stop for a specific suspended conveyance vehicle is required, the brake system cannot stop the suspended conveyance vehicle immediately and can only adopt he deceleration method, and such deceleration sliding will also inevitablv brinn the ' C? -J collision of the adjacent suspended conveyance vehicle.

BRIEF SUMMARY OF THE INVENTION [0004] The present invention provides a suspended rail conveying system f manufacturing workshops, aiming to solve the problems that the traditional suspended rail conveying system cannot control the suspended conveyance vehicles to decelerate in the event of failure and cannot immediately reduce the speed of the suspended [0005] The present invention is realized by following technical solutions:

A susnended rail convevi.

Λ V g system for vehicle manufacturing workshops, dicular to the rail are disposed on the rail at equal intervals;

the suspended conveyance vehicle comprises a frame, a primary suspended column, an emergency brake mechanism, a first axle and a second axle are connected to a bottom of the frame, two ends of the first axle and the second axle are connected to rollers on gears are disposed along the circumference of the deceleration sleeve, the cross section di disposed on the second axle, a motor and a controller are disposed on an upper surface and extends into the gearbox to drive the second axle to rotate; the emergency brake mechanism comprises a secondary suspended column fixed on a lower surface of the frame, a placement board is fixed on the lower end of the secondary suspended column, hydraulic cylinder and a limit tube are installed on the placement board, an oil pump is fixed on an upper surface of the hydraulic cylinder, the oil pump is electrically connected to first oil port and a second oil port are disposed on an cylinder, the first oil port is adjacent to the. second axle.

oil connected to inside the rod is fixed on. another end of the piston, a movable end of the second piston rod rnovably passes through one end of the hydraulic cylinder near the first axle, the movable end of the second piston rod is connected with a deceleration pawl, the paw deceleration pawl faces the deceleration sleeve, a side of the deceleration pawl facinc ί · I './ the first axle is a concave surface, a size of the concave surface matches with a size of the deceleration sleeve, a plurality of grooves are disposed on the concave surface, a ize of each of the plurality of the grooves .matches with a size of each of the plurality of the deceleration pawl, and a movable end of the first piston rod rnovably passes through one end of the hydraulic cylinder near the second axle; and a first through hole is disposed on a side of the limit tube, the movable end of the first piston rod can pass through the first through hole and enter the limit tube art emergency brake lever is also first oiston rod is located insidf

A lower end of the emergency brake lever sequentially passes through the second through

In the prior art, the suspended conveyance vehicles are controlled by the control system and in such setting, there is a problem that when the background control system fails and cannot control the suspended conveyance, vehicles, the speed of the suspended conveyance vehicles will be different from each other, and the suspended conveyance vehicles may collide with each other, causing the damage of the suspended conveyance increasing the process cost, prolonging the delivery period; Moreover, when an emergency stop for a specific suspended conveyance vehicle is required, the brake system cannot stop the suspended conveyance vehicle immediately and can only adopt the deceleration method, and such deceleration sliding will also inevitably bring the collision of the adjacent suspended conveyance vehicles.

[0008] To solve the above problems, the present invention provides a suspended rail convevin» svstem for vehicle manufacturing workshoos.

[0009] Particularly, the system comprises a rail and suspended conveyance vehicles disposed in the rail. The improvement of the rail is that a plurality of interceptor two rails, and the function of the interceptor crossbars is to intercept the emergency s a spen s i on mecha n i s rn, between the deceleration sleeve and the first sleeve is used to engage with the deceleration pawl of the emergency brake mechanism.

Cr<

when the deceleration pawl is engaged with the deceleration sleeve, the speed of the sliding under the push of the second axle to initially reduce the speed conveyance vehicle, specifically a plurality of deceleration gears having isosceles trapezoidal cross sections are disposed along the circumference of the deceleration pawl facing the deceleration sleeve is a concave surface, the concave surface is used to section of the concave surface is semicircular, a plurality of grooves are disposed inside the concave surface to match with the deceleration gears, meaning that the cross section of the groove is also isosceles trapezoid, and such design makes the speed of the fir st axle; The suspension mechanism is a primary suspended column disposed under the frame and located in die gap between the rails d the lower end is used to connect to the suspension device to suspend the work pieces; and the drive system is a gearbox disposed on the second axle and a motor located on the. upper rails along the. direction from the second axle to the first axle to deliver the cargo to a [0011] The emergency brake mechanism is fixed on the lower surface of the frame by a secondary suspended column, the lower end of which fixes a. placement board. The hydraulic cylinder disposed on the placement board is a double-action double-piston me, connecting with the oil pump through the first oil port, the second oil port and the oil pipes. The oil pump reciprocates the piston in the hydraulic cylinder by supplying oil through the first oil port and discharging oil through the second oil port, or discharging oil through the first oil port and supplying oil through the first oil port, wherein the oil rmmri is electrically connected to the controller, and the control system

Λ λ V ^} J of the oil pump is different from the one of the drive system, that is when the contro system of the drive system fails, the oil pump can

Ct «•SZ’V’ VU.

the first and the second piston rods to move by the hydraulic oil. The deceleration gears disposed on the second piston rod can contact the deceleration sleeve during the emergency braking for the purpose of the initial deceleration. The movable end of ths rst piston rod, that is the end away from the piston, in normal situation is placed in the limit tube through the first through •11' lever and to prevent the latter from falling between the two interceptor crossbars the third through hole, which may cause the emergency brake.

2] The principle of the emergency of the emergency lever is located on the movable end of the first piston rod inside the limit tube; When an emergency slop for a specific suspended conveyance vehicle is required, the emergency control system is used to send an emergency brake signal to pump to control the oil supply through the first oil port and the oil discharge through the second oil port, to make, the piston to move along the direction from the second rapidly engages with the deceleration gears to stop the rotation of die first axle. At the

Γ ·.· ·.✓ 1.7 G? JL same time, the movable end of the first piston rod leaves the limit tube, and the emergency brake lever without the support sequentially passes through the second and &

e of the emergency brake lever the interceptor crossbar. During the period before the side contacts ’with the side of the interceptor crossbars, the suspended conveyance vehicle decelerates by the engagement of the deceleration pawl and the deceleration sleeve.

After the side of the emergency brake lever contacts with the side of the interceptor crossbars, because the. upper end of the emergency brake lever is located above the limit tube, the emergency brake lever, the limit tube and the interceptor crossbars limit the movement of the placement board, thereby restricting the movement of the whole rotate, the suspended.

conveyance vehicle cannot be driven to move forward, which suspended conveyance vehicles from colliding arid work pieces faults are eliminated, the emergency brake lever is lifted and the the second oil port and discharged through the first oil port, then the piston moves along the direction from the first axle to the second axle, and finally the first piston rod s located inside the limit tube. The emergency brake lever is then lowered to be positioned on th the present invention can control the oil pump, thereby controlling the deceleration pawl to er .gage with the deceleration sleeve, on the first axle to reduce the movement speeci •b the side thereof is contact with the interceptor crossbars to quickly reduce the speed running. lite suspended conveyance vehicle cannot be driven to move forward, which radically prevents the suspended conveyance vehicles from colliding and work.

pieces from falling and improves the safety of the process.

frame near the first axle, The suspended conveyance vehicle moves along the direction from A J G· the second axle to the first axle, therefore the side of the frame near the first axle refers to the front end of the frame. The infrared distance meter is electrically connected with

I the controller, and the distance of the two suspended conveyance vehicles is measured infrared distance meter. When the time difference is lower than the presetting value.

the distance between the. two suspended conveyance vehicles is too close. In order to present the two suspended conveyance vehicles from colliding, the infrared distance meter sends an emergency brake receiving the emergency brake signal turns on the oil pump and the emergency brake emergency brake system and eliminates the need for the staff to control the emergency [0015] Furthermore, the plurality of the deceleration gears is made of rubber. Since the deceleration gear is made of rubber, during the engagement the rubber will deform and.

will not wear the grooves on the deceleration pawls to extend the service life.

At the purpose of the deceleration gear is to reduce the rotation speed of the y·» can be achieved by the wear resistance, friction and hardness of the rber itself. Preferably, the deceleration gear is made of nitrile rubber.

[0016] Furthermore, a distance between two adjacent of the plurality of the intercepto [0017] Furthermore, a width of each of th« plurality of the interceptor crossbars .s

10-20 centimeters.

[0018] Furthermore, a length of each of the plurality of the interceptor crossbars is the one sixth of an interval between two rails.

[0019j Furthermore, a diameter of the second through hole is equal to a diameter of the third through hole.

of the first piston rod [0021] The above designs are the specific parameters obtained in the practice, so that the emergency brake mechanism is implemented more smoothly and easily.

[0022] Compared to the prior art, the present invention has the following advantages [0023] 1. When the drive system is out of control, the system disclosed in the present invention can control the oil pump, thereby controlling the deceleration pawl to engage with the deceleration sleeve on the first axle to reduce the movement speed of the suspended conveyance vehicle. Then by the free fall of the emergency brake lever, the side of the emergency brake lever is in contact with the interceptor crossbars on the rail

1' iih the

«.-Z motor is still running, the suspended conveyance vehicle cannot be driven to move orward, which radically prevents the suspended conveyance vehicles from colliding [0024] 2. The present invention mplifies the control of the emergency brake system bv the infrared distance meter emergency braking system. The more accura

BRIEF DESCRIPTION OF THE DRAWINGS

F₍

25] The drawings described herein are intended to provide a further understanding of the embodiments of the present invention and form a part of the application., but not intended to constitute a limitation of the embodiments of the present invention. In the drawings:

[0026] FIG. 1 is a schematic view of the present invention;

[0027] FIG. 2 is a. schematic view of the emergency brake mechanism of the present invention under the normal situation;

FIG. 3 is a schematic view of the emergency brake system under the emergency brake situation.

[0029] Annotations in the drawings and the names of the corresponding parts are:

brake mechanism, 6--eearbox, 7-motor, 8-infrared distance

10-primary suspended column, II-rail, 12-interceptor crossbars.

uspended column, 52-placement board, 531-oil pump

32-first oil port,

537-piston, 54-emergency brake lever, 55-deceleration pawl, 56-limit tube

DETAILED DESCRIPTION OF THE PREFERREI

.) EMBODIMENTS and advantages for the present <_2 Λ invention, with reference to the accompanying embo iiments and drawings, the present invention is further described in detail, the embodiments and the illustrations thereof is merely illustrative of the invention and are not intended to limit the invention.

[0032] Embodiment I >33] As shown in Fig. I to Tig. 3, the present invention discloses a suspended rail conveying system for vehicle manufacturing workshops, comprising suspended conveyance vehicle, wherein a plurality of interceptor crossbars 12 conveyance vehicle comprises a frame

1, a primary suspended column 10, an emergency brake mechanism 5, a first axle and a second axle 32 are connected to a bottom of the frame I, two ends of the ;onnected to rollers 2 on the rail 11, the first axle 31 is sleeved with a deceler ion sleeve 4, a plurality of deceleration gears are disposed along the circumference of the deceleration sleeve 4, the cross section of each of the plurality of the deceleration gears .10 is isosceles trapezoid, a gearbox 6 is disposed on the second axle 32, a motor 7 and a controller 9 are disposed on an upper surface of the frame I, and the lower end o output shaft of the motor 7 passes through the frame 1 and extends into the gearbox 6 secondary suspended column 51 fixed on a lower surface of the frame 1, a placement joard 52 is fixed on the lower end of the secondary suspended column 51, the placement board 52 is disposed above the plurality of the interceptor crossbars 12, a hydraulic cylinder 534 and a limit tube 56 are installed on the placement board 52, an

531 is electrically connected to the controller 9, a first oil port 532 and a second o

533 are disposed on -an upper surfac port

532 second ot port 533 is adjacent to the

31, the oil pump 531 is connected to the first oii port 532 and the second oil ροπ 533 via oil pipes, the first 532 and a piston 537 is disposed inside the hydraulic is fixed on one end of the piston 53/, a firs piston rod 536 is fixed on another end of the piston 537, a movable end of the second piston rod 535 rnovabty passes through one end of the hvdraulic evlinder 534 near the l J i / ./ deceleration pawl 55, the deceleration pawl 55 faces the deceleration sleeve 4, a side o

Ε^<! the deceleration pawl 55 facing the first axle 31 is a concave surface, a size of the are disposed on the concave surface, a size of each of the plurality of the grooves cylinder 534 near the second axle 32; and a first through hole is disoosed on a side of

I) limit tube 56 and enter an interior of the limit, tube 56, when the first piston rod 536 is piston rod 536, a second through hole is disposed on a bottom of the limit tube 56, a third through hole is disposed on the placement board 52, when the first piston rod 536 is located outside the limit tube 56, the lower end of the emergency brake lever 54 sequentially passes through the second through hole and the third through bole and is plurality of the interceptor crossbars 12 is 10—20 centimeters. A length of each of the neter of the third through hole.

A diameter of the first through hole is 1.05-) .25 times a diameter of die first piston rod

536 :en in use. the time difference detected by the. infrared distance meter 8 lower than the presetting value indicates that the distance between the two suspended

L·· conveyance vehicles is too close. The infrared distance, meter 8 sends an emergency brake signal to the controller 9, which the latter controls the oil pump 531 to sunnlv the ’ I J. a a j •i the oil pipe, thereby driving the piston 537 to move along the direction from the second axle 32 to the first axle 31. Then the deceleration pawl 55 engages with en f' tne the emergency brake lever 54 falls between the two interceptor crossbars 12 or on mte:

ceptor cross bars 12. During the period before die side of the emergen mcy brake lever 54 contacts with the side of the interceptor crossbars 12, the suspended conveyance vehicle decelerates by the engagement of the deceleration pawl anti the deceleration sleeve 4. After the side of the emergency brake lever 54 contacts with the tube 56, the emergency brake lever 54, the limit tube and the interceptor crossbars limit the movement of the placement board 52 together, thereby restricting the movement of the whole suspended conveyance vehicle, ime, even though the motor 7 is still driving the second axle 32 to rotate, the suspended conveyance vehicle cannot be driven to move forward. After all faults are eliminated, the emergency brake lever 54 is lifted and the oil is supplied through the second oil port 533 and discharged through the first, oil port 532, then the piston 53 moves alone the direction from the first axle 31 to

.....

system is out of control, the system disclosed by the present engage with the deceleration sleeve 4 on the first axle 31 to reduce the movement speed of the suspended conveyance vehicles, then by the free fall of the emergency lever 54, the side thereof is in contact with the interceptor crossbars 12 to quickly educe the speed of the suspended conveyance vehicle to zero. Even though the moto lli re suspended conveyance vehicle cannot be driven to move, forward.

which radically prevents the suspended conveyance vehicles from colliding and work [0036] The specific embodiment described above further explains the purposes, technical solutions and beneficial effects of the present invention. It is to be understood

that the foregoing is only illustrative of the embodi	ments of the present invention, and
is not intended to limit the scope of the press	snt invention. Any modifications.
equivalents, and improvements made within the	: spirit and scone of the present A X Γ
invention should be included in the scope of protect	ion. of the present invention.

1. A suspended rail conveying system for vehicle manufacturing workshops,

Claims

comprising a rail (11) and a suspended conveyance vehicle, characterized in that, a plurality of interceptor crossbars (12) perpendicular to the rail (11) are disposed on the rail (11) at equal intervals; the suspended conveyance vehicle comprises a frarir first axle (31) and a second axle (32) are connected to a bottom of the frame (1

X.....

), two ends of the first axle (31) and the second axle (32) are connected to rollers (2) deceleration gears are disposed along the circumference of the deceleration sleeve (4), the cross section of each of the plurality of the deceleration gears is isosceles trapezoid, a gearbox (6) is disposed on the second axle (32), a motor (7) and a controller (9) are disposed on an upper surface of the frame (I), and the lower end c (5) comprises a secondary suspended column (51) fixed on a lower surface of the suspended column (51), the placement board (52) is dispos .he interceptor crossbars (12), a hydraulic cylinder (534) installed on the placement board (52), an. oil pump (531.) is fixed on an upper surface of the hydraulic cylinder (534), the oil pump (531) is electrically connected to the ίΑI controller (9), a first oil port (532) and a second oil port (533) are disposed on an upper surface of the hydraulic cylinder (53-4), the first oil port (532) is adjacent to the second axle (32), the second oil port (533) is adjacent to the first axle (31), the oil pump (531) is connected to the first oil port(532) and the second oil port (533) via oil pipes, the first. (532) and second oil ports (533) are both connected to an interior c hydraulic cylinder (534), a second piston rod (535) is fixed on one end of the piston (537), a first piston rod (536) is fixed on another end of the piston (537), a movable end of the second piston rod (535) movably passes through one end of the hydraulic

SJ.8V cylinder (534) near the first axle (31), the movable end of the second piston rod (535) is connected with a deceleration pawl (55), the deceleration pawl (55) faces the deceleration sleeve (4), a side of the deceleration pawl (55) facing the first axle deceleration sleeve (4), a plurality of grooves are disposed on. the concave surface, a size ach of the plurality of the grooves matches with a size of each of the plurality of the deceleration pawl, and a movable end of the firs piston rod (536) movably passes through one end of the hydraulic cylinder (534) near the second movable end of the first piston rod (536) can pass through the first through hole and

IP enter the limit tube. (56), an emergency brake lever (54) is also comprised, a lowe end of the emergency brake lever (54) passes through a top of the limit tube (56) and enter a· ncy brake lever (54) is placed on the first piston through hole is disposed on a bottom o.

f the lim tube (56), a (536) is located outside the limit tube (56), the lower end of the emergency brake hole and is located between two of the plurality of the interceptor crossbars (12), and a top end of the emergency brake lever (54) is located at an upper surface of the
2.

according to claim 1. characterized in that, an infrared distance meter (8) is disposed on a side of the frame (1) near the first axle (31).
3. The suspended rail conveying system for the vehicle rn anufacturing workshops of the deceleration gears is made of rubber.

according to claim 1, characterized in that, a distance between two adjacent of the

The suspended rail conveying system for the vehicle manufacturing workshops according to claim 4. characterized in that.

' width of each of the plurality of the interceptor crossbars (12) is 10-20 centimeters.

The suspended rail conveying system for th· vehicle manufacturing workshop.

a length of each of the plurality of the interceptor crossbars (12) is the one sixth of an interval between two rails.

pi i ne according to claim 1, characterized in that, a diameter o the second through bole i equal to a diameter of the third through hole.

manufacturing workshops according to claim 1, characterized in that, a diameter

1.05-1.25 times a diameter of the first piston rod (536).