JP3225697U - Lift device for articulated bus - Google Patents

Abstract

An object of the present invention is to provide a lift device for an articulated bus which can perform inspection and maintenance of a ceiling portion of an articulated bus and enhance safety. An articulated bus lift device includes a pit 3 formed on a floor, a front lift device 4 and a rear lift provided in the pit 3 that can lower the articulated bus below the floor. Device 5. The front lift device 4 places, for example, a rear wheel of a general large bus or a leading vehicle 1a of an articulated bus, or a rear shaft of a leading vehicle 1a of an articulated bus and a rear wheel of a rear vehicle 1b. And a lifting device 7 for raising and lowering the front bearing support 6. The lifting device 7 can be raised and lowered by two front and rear lifting mechanisms 7a, 7a. . [Selection diagram] Fig. 1

Description

  According to the present invention, the articulated bus lift device, in particular, the articulated bus in which the rear vehicle of the rear one axis is articulated to the front vehicle of the front and rear two axes can be lowered into the pit formed on the floor surface and maintained. It relates to such a lift device.

  In large buses, it is often necessary to inspect and maintain the ceiling of large buses in order to equip ceilings with hybrid batteries, air conditioners, and the like.

  Conventionally, for inspection and maintenance of the ceiling, for example, a work table is placed on the side of a bus, and an operator rides on the work table to perform inspection and maintenance.

  For example, as a lift device that lifts a large bus from above a floor surface, there is, for example, Patent Document 1.

JP 2001-213287 A

  However, it was dangerous to perform maintenance and inspection while the worker was on the table.

  Particularly, in the case of an articulated bus, the work range is wide, and preparation for inspection and maintenance, such as movement of a table, is time-consuming.

  An object of the present invention is to solve the above problems.

  The articulated bus lift device of the present invention includes a pit formed on the floor, and a front lift device and a rear lift device provided in the pit, which can lower the articulated bus below the floor surface. A lift device for an articulated bus, characterized in that:

  In addition, a contact sensor is provided on at least one of the rear surface of the front support cradle on which the bus is mounted and the front surface of the rear support cradle on which the bus is mounted, of the rear lift device. And a stop mechanism for stopping the corresponding lift device when the contact sensor reacts.

  Further, the articulated bus is a bus in which a leading vehicle having two front and rear axes and a rear car having one rear axis are articulated.

  The longitudinal length of the front support pedestal on which the bus is placed of the front lift device is 11 m to 14 m, and the longitudinal length of the rear support pedestal of the rear lift device on which the bus is placed. The length in the direction is 5 m to 7 m.

  Further, the vehicle further comprises a floor stop lock mechanism, wherein the floor stop lock mechanism includes one lock portion provided on each of the left and right sides of the front support pedestal and the rear support pedestal; The other lock portion provided on the inner side surface and engageable with the one lock portion, and the operation portion for engaging or releasing the one lock portion and the other lock portion, the one lock portion, When the other lock portion is engaged, the lock portion is engaged so as to prevent the front support base and the rear support base from falling.

  Further, a hydraulic cylinder device portion of a lifting mechanism portion for raising and lowering the front support pedestal of the front lift device or the support pedestal of the rear lift device includes a cylinder portion, and a piston portion that can expand and contract with respect to the cylinder portion. And a ratchet mechanism. The ratchet mechanism includes a rack provided on the cylinder, a claw provided on the piston, engageable with the rack, and a ratchet. And a disengagement portion for releasing the claw portion.

  Further, a fall prevention device is further provided, wherein the fall prevention device is formed in an upper portion of the inner side surface of the pit, and has a longitudinally extending concave portion provided with one end side rotatably provided in a concave portion extending in a longitudinal direction; An operating section for operating the L-shaped member up and down; the section L-shaped member is provided in the recess when the operating section is operated to position the section L-shaped member downward; When the operating part is operated to position the L-shaped section upward, the other end of the L-shaped section is connected to the inner side surface of the pit and the front bearing. It is formed so as to penetrate between the sides of the table and protrude upward at a desired height from the floor surface.

  According to the present invention, the inspection and maintenance of the ceiling can be performed even in the articulated bus. In addition, safety such as inspection and maintenance of the ceiling is improved.

  In addition, it is possible to reduce the time for preparations such as inspection and maintenance.

FIG. 2 is an explanatory vertical sectional side view of the articulated bus lift device of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an explanatory vertical sectional front view of an articulated bus lift device of the present invention. FIG. 2 is an explanatory vertical sectional side view of the articulated bus lift device of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an explanatory vertical sectional front view of an articulated bus lift device of the present invention. FIG. 4 is an explanatory view of a lock device for stopping a floor and a fall prevention device of the lift device for an articulated bus of the present invention. FIG. 3 is an explanatory view of the lifting device of the articulated bus lift device of the present invention. FIG. 3 is a side view for explaining a cylinder lock mechanism of the articulated bus lift device of the present invention. FIG. 3 is a front view for explaining a cylinder lock mechanism of the articulated bus lift device of the present invention.

  The present invention will be described below with reference to the drawings.

  (1. Description of the configuration of the articulated bus lift of the present invention)

  As shown in FIGS. 1 to 8, the articulated bus lift device of the present invention includes an articulated bus 1 in which a front vehicle 1 a having two front and rear axes is articulated with a rear vehicle 1 b having a rear one axis. 2 is a lift device that can descend below 2.

  The articulated bus lift device includes a pit 3 extending in the front-rear direction and formed in the floor surface 2 in a concave shape, a front lift device 4 provided at the bottom of the pit 3, and a rear lift device. 5

  The front lift device 4 mounts, for example, a common large bus, a leading vehicle 1a of an articulated bus, or a rear axle wheel and a rear axle wheel of a leading vehicle 1a of an articulated bus. And a lifting device 7 that raises and lowers the front bearing pedestal 6. The lifting device 7 can be raised and lowered by, for example, two front and rear lifting mechanisms 7a, 7a. To do.

  The front support pedestal 6 is formed, for example, in a rectangular plate shape on which the bus or the like can be placed, and has a longitudinal length of, for example, 11 m to 14 m. 5 m, the length in the width direction is 2.8 m, and the elevation height is 2 m.

  The rear lift device 5 is capable of mounting and supporting, for example, a rear wheel of a rear vehicle 1b of the articulated bus or a front wheel of a leading vehicle 1a of the articulated bus. When used together with the device 4, the rear support receiving stand 8 large enough to support the articulated bus 1 and an elevating device 9 for elevating and lowering the rear supporting stand 8 are provided. For example, it can be moved up and down by one elevating mechanism 9a.

  The rear support pedestal 8 is formed to be about half the length of the front support pedestal 6, and is formed, for example, in a rectangular plate shape on which the rear vehicle 1b of the articulated bus can be placed and supported. For example, the length in the longitudinal direction is 5 m to 7 m, and as an example, the length in the longitudinal direction is 6 m, the length in the width direction is 2.8 m, and the elevation height is 2 m.

  The front-side wrist device 4 and the rear-side lift device 5 may be formed not only to be able to move up and down at the same time, but also to be able to move up and down separately.

  A contact sensor such as a tape switch is provided on the rear surface of the front bearing support 6 and on the front surface of the rear bearing support 8 opposed to the rear surface. When something touches and reacts to the contact sensor, a stop mechanism is provided to stop the bearing pedestals 6, 8, and when an object is caught between the rear surface and the front surface, the pedestals 6, 8 are stopped. It may be formed as follows.

(1.1. Description of the lock device for stopping the floor of the bearing support)

  In addition, when the front support base 6 and the rear support base 8 are located at the same height as the floor surface 2, the hydraulic pressure of the lifting mechanism is temporarily reduced. In the case where the door has come off, a floor stop lock device may be provided to prevent the door from falling downward.

  As shown in FIGS. 4 and 5, for example, the floor-stopping lock device is provided on the left and right side portions 6a, 6a of the front support pedestal 6 at a desired interval in the longitudinal direction. One lock portion 10 such as a plurality of lock pins that can protrude outward in the direction (left and right direction), and a case where the lock pin protrudes from the inner side surface of the pit 3 such as a concave portion into which the lock pin can be inserted. Are engaged so as to prevent the front support pedestal 6 from dropping, and when not projecting, the other lock portion 11 that does not engage, the one lock portion 10, and the other lock portion 11 And an operation unit 12 such as an air cylinder for engaging and disengaging.

  In the same manner as described above, the rear support stand 8 is also provided with the lock device for stopping the floor.

(1.2. Description of lifting device)

  As shown in FIG. 6, the elevating mechanism 7a connects the base 13 installed on the bottom 3a of the pit 3 and the base 13 and the front support pedestal 6 so as to be vertically detachable. And a hydraulic cylinder device 15 for vertically moving the front support receiving base 6 toward and away from the base 13.

  The link mechanism portion 14, for example, rotatably connects one and the other connecting rods 14a, 14b at the center thereof so as to form an X shape, and connects the lower end of the one connecting rod 14a to the lower end. The base 13 is rotatably connected, and the upper end of the one connecting rod 14a is slidably connected to the front support base 6 in the front-rear direction. And the base 13 is rotatably connected to the base 13 and the lower end of the other connecting rod 14b is connected to the front support base 6 so as to be slidable in the front-rear direction.

  For example, a lower end of the hydraulic cylinder device 15 is rotatably connected to a lower portion of the other connecting rod 14b, and an upper end of the hydraulic cylinder device 15 is connected to an upper portion of the one connecting rod 14a. As the hydraulic cylinder device 15 expands and contracts, the front support pedestal 6 moves up and down.

  The hydraulic cylinder device section 15 includes, for example, a cylinder section 15a and a piston section 15b that expands and contracts with respect to the cylinder section 15a. A cylinder lock mechanism 15c may be provided to prevent 15a from shrinking.

(1.2.1. Explanation of cylinder lock mechanism)

  The cylinder lock mechanism 15c includes, for example, a ratchet mechanism. For example, as shown in FIG. 7, a rack 16 provided on the upper surface of the cylinder 15a in a longitudinal direction, and an upper part of the piston 15b, An engaging rod 18 that pivotally supports the upper end so as to be tiltable and has a claw 17 that is engageable (can be disengaged) with the rack portion 16 on the lower surface of the lower end, and the claw portion 17 is attached to the rack 16 And an engagement release section 19 that is operated by an air cylinder and provided so as to be spaced apart from each other.

  When the engagement release portion 19 is not operated, the claw portion 17 comes into engagement with the rack portion 16 due to gravity, and the piston portion 15b of the hydraulic cylinder device portion 15 extends. In this case, there is no case where the piston portion 15b is contracted even if the hydraulic pressure is released if the claw portion 17 is engaged.

  When the piston portion 15b is reduced, the air cylinder is operated to cause the engagement release portion 19 to separate the claw portion 17 from the rack portion 16.

  The lifting mechanism 9a of the rear support receiving portion 8 has the same configuration.

  (1.3. Description of fall prevention device)

  In addition, a fall prevention device 20 is provided between both side portions 6a of the front support receiving stand 6 and the inside side portion of the pit 3 to prevent small articles from falling.

  As shown in FIG. 5, for example, as shown in FIG. 5, a cross section of an angle member or the like in which the one end side 21a is rotatably provided in a longitudinally extending concave portion formed on the inner side surface of the pit 3 as shown in FIG. An L-shaped member 21 and an operating section such as an air cylinder 22 for operating the L-shaped section 21 so as to be tiltable in the vertical direction. The L-shaped section 21 reduces the size of the air cylinder 22. When the cross-section L-shaped member 21 is located below, it is housed in the recess, and when the air cylinder 22 is extended, the other end 21b of the cross-section L-shaped member 21 is The pit 3 is formed so as to penetrate between the inner side surface of the pit 3 and a side portion of the front support pedestal and protrude upward from the floor surface 2 at a desired height.

  By projecting the other end 21b of the L-shaped section 21 upward from the floor surface 2, it is possible to prevent small articles and the like from dropping from the gap, and to provide a visual effect and a human shoe. This makes it possible for a person to recognize the presence of the lift device.

(2. Explanation of operation of the present invention)

  Next, the operation and effects of the articulated bus lift device of the present invention will be described.

  For example, when the support plates 6, 8 of the front and rear lift devices 4, 5 are located below the pit 3, the support plates 6, 8 of the front and rear lift devices 4, 5 are The height is raised to the same level as the height of the floor 3.

  At this time, the lock pins of the lock device for stopping the floor are not protruded so that the bearing supports 6 and 8 can move up and down.

  Also, the cylinder lock mechanism 15c of the hydraulic cylinder device 15 is formed such that the engagement release portion 19 is not operated and the rack 16 and the claw portion 17 are engaged by gravity. Even if the hydraulic pressure of the hydraulic cylinder device section 15 is released by the mechanism, it does not decrease.

  Further, the L-shaped section member 21 is located, for example, below by the air cylinder, and is arranged in the concave portion so as not to hinder the movement of the bearing supports 6, 8.

  Then, when the bearing supports 6 and 8 are positioned at the same height as the floor surface 2, the lock pin is protruded and engaged with the concave portion, and the hydraulic pressure of the hydraulic cylinder device unit 15 is released. Even if you try to prevent falling.

  In addition, the L-shaped section member 21 is tilted upward by the air cylinder so that the other end 21b protrudes from the floor surface 2 to prevent a tool from falling.

  If not necessary, the L-shaped section member 21 does not have to be projected upward.

  Then, the articulated bus 1 is advanced to a desired position on the bearing supports 6 and 8.

  When the articulated bus 1 is moved forward and positioned, the front and rear wheels of the leading vehicle 1a are mounted on the front bearing pedestal 6, and the rear wheels of the rear vehicle 1b are moved to the rear bearing pedestal 8. To get on.

  When the articulated bus 1 is to be moved backward, the rear wheel of the rear vehicle 1b and the rear wheel of the leading vehicle 1a are placed on the support-side cradle 6, and the front wheel of the leading vehicle 1a is Get on the rear bearing stand 8.

  If necessary, the L-shaped section member 21 is tilted downward, the lock pin of the lock device for stopping the floor is reduced, and the engagement of the hydraulic cylinder device 15 is released. By operating the portion 19, the claw portion 17 is separated from the rack portion 16.

  Then, the connecting bus 1 is lowered in the pit 3 to a desired position by the front and rear lift devices 4 and 5.

  Then, if necessary, the ratchet mechanism of the cylinder lock portion is operated so that the claw portion engages with the rack portion 16.

  Then, inspection and maintenance of the roof and the like of the articulated bus 1 are performed.

  After the maintenance is completed, the lift is raised in the same manner as described above.

  According to the present invention, the inspection and maintenance by the worker on the table is eliminated, so that safety and maintenance preparation are not required.

  In addition, it is an articulated bus, so that work can be performed.

  In the case of a large bus other than the articulated bus, only the front support stand is lowered.

  This makes it possible to reduce the number of openings on the upper surface of the pit 3 where there is no bus, and to perform the operation at low cost.

  The vehicle maintenance and inspection lift device of the present invention is used in a vehicle inspection and maintenance shop, a vehicle maintenance shop, and the like.

REFERENCE SIGNS LIST 1 articulated bus 1a leading vehicle 1b rear vehicle 2 floor 3 pit 3a bottom 4 front lift device 5 rear lift device 6 front support pedestal 6a side surface 7 elevating device 7a elevating mechanism 8 rear support pedestal 9 elevating device 9a Elevating mechanism unit 10 One lock unit 11 The other lock unit 12 Operation unit 13 Base 14 Link mechanism unit 14a Connecting rod 14b Connecting rod 15 Cylinder device unit 15a Cylinder unit 15b Piston unit 15c Cylinder lock mechanism unit 16 Rack unit 17 Claw unit 18 Engagement rod 19 Engagement release part 20 Fall prevention device 21 L-shaped section member 21a One end 21b Other end 22 Air cylinder

Claims (7)

Pits formed on the floor,
A lift device for an articulated bus, comprising a front lift device and a rear lift device provided in the pit and capable of descending the articulated bus below the floor.   A contact sensor is provided on at least one of the rear surface of the front bearing pedestal on which the bus is placed and the front surface of the rear bearing cradle on which the bus is placed, of the rear lift device. The lift device for an articulated bus according to claim 1, further comprising: a stop mechanism for stopping the corresponding lift device when a contact sensor reacts.   3. The articulated bus lift device according to claim 1, wherein the articulated bus is a bus in which a front vehicle having two front and rear axles and a rear vehicle having one rear axle are articulated. 4.   The longitudinal length of the front support pedestal on which the bus is placed of the front lift device is 11 m to 14 m, and the longitudinal length of the rear support pedestal of the rear lift device on which the bus is placed is set. The lift device for an articulated bus according to claim 1, 2 or 3, wherein the length is 5m to 7m. It further has a floor stopping lock mechanism,
The floor stop lock mechanism is related to one lock portion provided on each of the left and right sides of the front support cradle and the rear support cradle, and the one lock portion provided on the inner side surface of the pit. The other lock portion that can be engaged, and the operating portion that engages or releases the one lock portion and the other lock portion,
The said one lock part and the said other lock part are engaged so that fall of the said front support pedestal and a rear support pedestal may be prevented. The lift device for an articulated bus according to 1, 2, 3 or 4. The hydraulic cylinder device portion of the lifting mechanism for raising and lowering the front support pedestal of the front lift device or the support pedestal of the rear lift device, a cylinder portion, a piston portion that can expand and contract with respect to the cylinder portion, With the ratchet mechanism,
The ratchet mechanism section includes a rack section provided on the cylinder section, a claw section provided on the piston section, the claw section being engageable with the rack section, and an engagement release for releasing the claw section engaged with the rack section. The articulated bus lift device according to any one of claims 1, 2, 3, 4, and 5, wherein the lift device comprises a part. Further provided with a fall prevention device,
The fall prevention device includes an L-shaped cross-section member having one end rotatably provided in a longitudinally extending recess formed in an upper portion of the inner side surface of the pit, and operates the L-shaped cross-section member up and down. Consisting of an operation unit,
The section L-shaped member is accommodated in the recess when the operation section is operated to position the section L-shaped member downward, and the section L is operated by operating the operation section. When the character-shaped member is located above, the other end side of the L-shaped cross section penetrates between the inner side surface of the pit and the side of the front support pedestal, and is higher than the floor surface. The lift device for an articulated bus according to claim 1, 2, 3, 4, 5, or 6, wherein the lift device is formed to project upward at a desired height.

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