JP2017001856A - Lift device for vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To stop as early as possible opening of a pit when a lift table rises from a lift down position.SOLUTION: A lift 10 for a vehicle includes a first cover 41 which is, as a pit cover 40, extended to correspond to at least one of left and right pit intervals 12 L, 12R, and a second cover 42 which is, corresponding to at least one of to and fro pit intervals 12F, 12G, extended in a V-like space being sandwiched and partitioned by both links from above and below, on both sides on an intersection part 20 J of a first link 21 and a second link 22 in a prone state with a lift table 30 lowered to a lift down position.SELECTED DRAWING: Figure 12

Description

  The present invention relates to a vehicle lift device.

  In general, a lift device for a vehicle is provided with a pit on the floor surface of a maintenance area, and a lower end portion of a first link of a lifting device is pivotally supported by a rotation support portion provided at one end side inside the pit, and a second link The lower end portion is slidably supported on a sliding support portion provided on the other end side inside the pit, and an X link mechanism in which both links are connected by an X-shaped intersection portion is configured to be vertically expandable and contractible. A lift table mounted on the X link mechanism is raised and lowered. When the lift table is positioned at the lift-down position, which is the lowest position for raising and lowering, the lift table is positioned at the opening of the pit to close the opening so that the lift table is flush with the floor of the maintenance area. . On the other hand, when the lift table is lifted from the opening of the pit, if the opening of the pit is opened to the work space of the maintenance shop, there is a risk that maintenance workability may be hindered, such as an operator dropping his foot into the opening. is there.

  Therefore, as a vehicle lift device capable of closing the opening when the lift table is lifted from the opening of the pit, the one described in Patent Document 1 has been proposed. This vehicle lift device includes a pit cover. This pit cover is set in a pit closed position that closes the opening when the lift table is lifted from the pit opening, and is stored in the pit when the lift table is lowered to the lift down position. Set to position. At this time, the pit cover is notched with a small opening through which the peripheral portion of the intersection of the first and second links of the X link mechanism is inserted and exited.

Japanese Patent No. 5268089

  In the lift device for a vehicle described in Patent Document 1, the entire area of the pit opening is closed by a single pit cover.

  Here, the pit cover extends to a V-shaped space where the lift table is lowered to the lift-down position and the both links of the first link and the second link in the prone state are sandwiched from above and below. Be present.

  As a result, the lift table of the pit cover rises above a certain height from the lift-down position, and the first link (or second link) that divides the above-mentioned V-shaped space from above is above the opening of the pit. Unless it moves, the opening of the pit cannot be blocked.

  Therefore, the pit cover is a region in which the first link and the second link do not enter and exit within the pit opening until the lift table rises above the certain height from the lift-down position (in the width direction of the X link mechanism). Including the pit gap formed on the side portion cannot be closed. This means that for a considerable period after the lift table starts to rise from the opening of the pit, the entire area of the opening of the pit continues to be opened to the work space of the maintenance shop, which may hinder the maintenance workability of the operator.

  An object of the present invention is to block a pit opening as early as possible when a lift table is lifted from a lift-down position.

  According to the first aspect of the present invention, a pit is provided on the floor of the maintenance area, the lower end portion of the first link of the lifting device is pivotally supported by the rotation support portion provided at one end side inside the pit, and the second link The lower end portion is slidably supported on a sliding support portion provided on the other end side inside the pit, and an X link mechanism in which both links are connected by an X-shaped intersection portion is configured to be vertically expandable and contractible. The lift table mounted on the X-link mechanism is positioned at the opening of the pit so that it can be moved up and down between a lift-down position that closes the opening and a lift-up position that is positioned above the pit, and the lift table is raised from the opening of the pit. It has a pit cover that is set at a pit closing position that sometimes closes the opening and that is set at a pit storage position that is stored inside the pit when the lift table is lowered to the lift down position. In the dual lift device, when the lift table is raised to the lift-up position, the left and right side portions of the X link mechanism in the width direction perpendicular to the longitudinal direction of the two links constituting the X link mechanism within the opening of the pit A pit gap is formed in at least one of the linking pits, and front and rear pit gaps are formed on both front and rear sides in the longitudinal direction of the X link mechanism along the longitudinal direction of both links forming the X link mechanism. As a cover, a first cover extending so as to correspond to at least one of the left and right pit gaps, and a first link corresponding to at least one of the front and rear pit gaps and in a prone state by lowering the lift table to the lift-down position And a second cover extending in a V-shaped space defined by the two links sandwiched from above and below on both sides of the intersection of the second links. The first cover is driven so as to be set to a pit closing position that closes at least one of the left and right pit gaps under a state in which the lift table is raised above the first lift position. Driven to be stored in the pit when set lower than the lift position, the second cover is lifted above the second lift position where the lift table is higher than the first lift position. Driven to be set to a pit closing position that closes at least one of the front and rear pit gaps under conditions, and to be stored in the pit when the lift table is set lower than the second lift position. It was made to do.

  According to a second aspect of the invention, in the first aspect of the invention, the first cover is provided corresponding to at least one of the left and right pit gaps and the other front and rear pit gap, and corresponds to at least one of the left and right pit gaps. And a central cover portion coupled to the base end side portion of the belt-like cover portion and corresponding to the other front and rear pit gap.

  According to a third aspect of the present invention, in the first or second aspect of the invention, the first cover and the second cover are driven in conjunction with a lifting operation of the lift table by the lifting device. is there.

  According to a fourth aspect of the present invention, in the third aspect of the present invention, the first cover is provided in a plurality of positions so that the first cover can be tilted up and down at a plurality of positions between the frame of the first cover and a frame provided in the pit. The pedestal is erected by the force of the urging means, the first cover is set to the pit closed position, and the pedestal moves together with the X link mechanism in the process of contracting the X link mechanism up and down. Tilt is started against the force of the urging means by the release operator, and the X link mechanism is further contracted up and down to be put in the pit by the pressing operator moving with the X link mechanism. It is tilted so that the first cover can be stored inside the pit.

  The invention according to claim 5 is the invention according to claim 3 or 4, wherein the second cover has an end on the side far from the X link mechanism in the longitudinal direction of the X link mechanism as a frame of the first cover. The first and second ends constituting the X link mechanism are supported by a support column that can be moved up and down on a fixed support portion, and end portions on the side close to the X link mechanism in the longitudinal direction of the X link mechanism. 2 is supported so as to be guided in the vertical direction by a guide portion provided on one of the links, the column is raised by the force of the urging means, the second cover is set at the pit closed position, and the column is supported by the X link mechanism. In the process of contracting up and down, the release operation element provided in the X link mechanism starts tilting against the force of the urging means, and in the process of contracting the X link mechanism further up and down to fit the lift table in the pit, Pushing provided on the X link mechanism Is tilted by being pressed by the operator, it is obtained so as to enable housing the second cover inside the pit.

  According to a sixth aspect of the present invention, in the fifth aspect of the present invention, when the first cover has left and right belt-like cover portions corresponding to the left and right pit gaps, the column on which the second cover is supported can be raised and lowered. The support portion provided in the first cover is fixed to a bridging portion that spans the tip side portions of the left and right belt-like cover portions of the first cover.

  The invention according to claim 7 is the invention according to claim 5 or 6, wherein the support column pins-couples two folding bars at a connecting point, and an upper end portion of one folding bar is used as a frame of the second cover. Pin-coupled, the lower end of the other folding bar is pin-coupled to a support fixed to the frame of the first cover, and both folding bars can be raised by the force of the biasing means and locked at the toggle lock position. The release operation element configured to start the tilting of the support column against the force of the urging means includes a release arm that is fixed to the first or second link of the X link mechanism, and two that constitute the support column A connecting arm that is pin-coupled to a connecting point of the folding rod, and is configured to be able to connect a release operation part of the release arm and a connection part of the connection arm. The release arm has the second cover in the pit closed position. Sometimes the second cover is not connected to the connecting arm. There is obtained so as to be connected to the connecting arm when initiated housed inside the pit.

(Claim 1)
(a) The pit cover was divided into a first cover and a second cover.
In a state where the lift table is raised above the first lift position (low lift position), the first cover covers at least one of the left and right pit gaps (the area where the first link and the second link do not enter and exit). did.

  With the lift table raised above the second lift position (high lift position), the second cover covers at least one of the front and rear pit gaps (region where the first link and the second link go in and out). did.

  The first cover closes at least one of the left and right pit gaps of the pit as soon as possible when the lift table reaches a lower lift position (first lift position) after the lift table starts to lift from the lift-down position.

  The second cover lifts the lift table from a lift-down position to a higher lift position (second lift position) and divides the V-shaped space on both sides of the intersection of the first link and the second link from above. After the first link (or second link) is moved above at least one pit gap before and after the pit, the first pit gap is blocked.

  The first cover closes at least the corresponding left and right pit gaps as early as possible without waiting for the arrival of the pit closing timing by the second cover in the process of lifting the lift table. It can be improved.

(Claim 2)
(b) The first cover includes a strip-shaped cover portion and a central cover portion coupled to a base end side portion of the strip-shaped cover portion. As a result, the first cover closes at least the corresponding one of the left and right pit gaps and the other front and rear pit gaps as soon as possible, further improving the workability of the operator.

(Claim 3)
(c) The first cover and the second cover are driven in conjunction with the lifting operation of the lift table by the lifting device. In order to drive the first cover and the second cover, a separate drive source is not required, and the first cover and the second cover can be reliably linked to the lifting operation of the lift table.

(Claim 4)
(d) The drive mechanism of the first cover is constituted by a plurality of pedestals, urging means, a release operator, and a pressing operator, so that the first cover is driven in a surely linked manner with the lifting / lowering operation of the lift table. it can.

(Claim 5)
(e) The drive mechanism of the second cover is constituted by a support column, a guide portion, an urging means, a release operation element, and a pressing operation element, so that the second cover is driven in association with the lifting operation of the lift table. it can.

(Claim 6)
(f) The support portion provided with the support column for supporting the second cover so as to be able to be tilted is fixed to the bridging portion that spans the tip side portions of the left and right belt-like cover portions of the first cover. The support portion for the support column of the second cover can be stably fixed to the belt-like cover portion of the first cover.

(Claim 7)
(g) The support column of the second cover is composed of two folding bars constituting the toggle mechanism, and the release operation element is composed of a release arm and a connecting arm. Accordingly, the second cover can be driven in a reliable manner in association with the lifting operation of the lift table.

FIG. 1 is a perspective view showing an embodiment of a vehicle lift device. FIG. 2 is a front view showing the vehicle lift device. FIG. 3 is a plan view showing a half portion on one side of the plane viewed along line III-III in FIG. FIG. 4 is a perspective view showing a pit cover of the lift device for a vehicle. FIG. 5 is a front view showing the drive mechanism of the first cover. FIG. 6 is a front view showing the drive mechanism of the second cover. FIG. 7 shows a lift-down state (a lift of 0 mm state) of the vehicle lift device, (A) is a front view showing the operation of the first cover, and (B) is a front view showing the operation of the second cover. 8A and 8B show a lift of the vehicle lift device of 39 mm, FIG. 8A is a front view showing the operation of the first cover, and FIG. 8B is a front view showing the operation of the second cover. 9A and 9B show a state in which the lift of the vehicle lift device is 100 mm, FIG. 9A is a front view showing the operation of the first cover, and FIG. 9B is a front view showing the operation of the second cover. 10A and 10B show a lift state of the vehicle lift device of 200 mm, FIG. 10A is a front view showing the operation of the first cover, and FIG. 10B is a front view showing the operation of the second cover. FIG. 11 shows a lift 276 mm state of the vehicle lift device, (A) is a front view showing the operation of the first cover, and (B) is a front view showing the operation of the second cover. FIG. 12 shows a lift 314 mm state of the vehicle lift device, (A) is a front view showing the operation of the first cover, and (B) is a front view showing the operation of the second cover. 13A and 13B show a state where the lift of the vehicle lift device is 435 mm, FIG. 13A is a front view showing the operation of the first cover, and FIG. 13B is a front view showing the operation of the second cover. 14A and 14B show a state in which the lift of the vehicle lift device is 500 mm, FIG. 14A is a front view showing the operation of the first cover, and FIG. 14B is a front view showing the operation of the second cover. 15A and 15B show a state in which the lift of the vehicle lift device is 600 mm, FIG. 15A is a front view showing the operation of the first cover, and FIG. 15B is a front view showing the operation of the second cover. FIG. 16 shows a state in which the lift of the vehicle lift device is 700 mm, (A) is a front view showing the operation of the first cover, and (B) is a front view showing the operation of the second cover. FIG. 17 shows a state in which the lift of the vehicle lift device is 1000 mm, (A) is a front view showing the operation of the first cover, and (B) is a front view showing the operation of the second cover. 18A and 18B show a state where the lift of the vehicle lift device is 1500 mm, FIG. 18A is a front view showing the operation of the first cover, and FIG. 18B is a front view showing the operation of the second cover. FIG. 19 shows a lift-up state (a lift 1800 mm state) of the vehicle lift device, (A) is a front view showing the operation of the first cover, and (B) is a front view showing the operation of the second cover. FIG. 20 is a perspective view showing another embodiment of the vehicle lift device.

  As shown in FIGS. 1 to 4, the vehicle lift device 10 includes a pair of left and right lifting devices 20, 20 and a pair of lifting devices 20, 20 on each of the left and right pits 12, 12 recessed in the floor 11 of the automobile maintenance yard. The lift table 30 moved up and down by 20 can be stored.

  Here, the vehicle lift device 10 enables the upper and lower two-stage X link mechanisms 20L and 20R and the lift table 30 to be stored inside the opening 12A of the pit 12 (when the lift table 30 is stored in the opening 12A). And the level of the opening surface thereof can be raised and lowered upward from the opening 12A. When the lift table 30 is lifted from the opening 12A of the pit 12, the pit cover 40 that closes the opening 12A is provided as described later. The vehicle lift device 10 is fixedly provided around the opening 12A of the pit 12 with a floor cover 13A that is supported by a gantry 13 provided inside the pit 12 and is flush with the floor surface 11 of the maintenance area.

  The elevating device 20 comprises a lower X-side link mechanism 20L by pin-connecting the first and second links 21 and 22 on the lower side crossing in an X shape at the X-shaped crossing portion 20J. The upper and lower third and fourth links 23 and 24 that intersect each other in a pin shape are pin-coupled at an X-shaped intersection 20K to constitute an upper X-link mechanism 20U. The upper end of the first link 21 and the lower end of the fourth link 24 are pin-coupled at a pin coupling point 20P, and the upper end of the second link 22 and the lower end of the third link 23 are pinned at a pin coupling point 20R. By joining, the elevating part 20A connecting the two upper and lower X link mechanisms 20U, 20L is configured. In this specification, the direction (X direction in FIG. 1) orthogonal to the longitudinal direction of both links 21 and 22 constituting the X link mechanism 20L is the left-right direction, and the direction along the longitudinal direction of both links 21 and 22 ( The Y direction in FIG.

  Each of the links 21 to 24 of the lifting device 20 is composed of a pair of left and right link plates, and the second to fourth links 22 to 24 are connected to each other by the connecting plate 25. The gap between the left and right link plates is closed. The first link 21 extends a hydraulic cylinder device 26 described later between the left and right link plates.

  The elevating part 20A pivotally supports the lower end pivot point (lower end part) 21A of the first link 21 on the rotation support part 14 provided on the frame 13 inside the pit 12, and the lower end roller (lower end part) of the second link 22 ) 22A is slidably supported by a sliding support portion 15 provided on the mount 13 inside the pit 12 so as to be capable of reciprocating linear movement.

  Further, the elevating unit 20 </ b> A pins the upper pivot point (upper end) 24 </ b> A of the fourth link 24 to the main table 31 of the lift table 30, and connects the upper end roller (upper end) 23 </ b> A of the third link 23 to the main table 31. The lift table 30 is mounted so as to be able to move up and down in a horizontal state by being coupled so as to be capable of reciprocating linear movement within the lower surface of the plate.

  The lifting device 20 includes an intermediate portion in the longitudinal direction of the first link 21 (in this embodiment, an intermediate portion sandwiched between the lower end pivot point 21A and the intersecting portion 20J) and an intermediate portion in the longitudinal direction of the fourth link 24 ( In this embodiment, a hydraulic cylinder device 26 that expands and contracts the X link mechanism 20L and the X link mechanism 20U is interposed between the intersecting portion 20K and the intermediate portion between the pin coupling points 20P. The proximal end portion of the cylinder 26 </ b> A of the hydraulic cylinder device 26 is pin-coupled to the intermediate portion of the first link 21, and the distal end portion of the piston rod 26 </ b> B of the hydraulic cylinder device 26 is pin-coupled to the intermediate portion of the fourth link 24.

  The elevating device 20 retracts the X link mechanisms 20L and 20U of the elevating unit 20A up and down and stores them in the pit 12 by the contraction operation of the hydraulic cylinder device 26, and opens the lift table 30 in the plane of the floor surface 11. It is positioned at the opening 12A of the pit 12, and the opening is closed, and the lift table 30 is set at a lift-down position where it is at the same level as the floor surface 11, so that the vehicle can pass through the lift table 30. By extending the hydraulic cylinder device 26, the X link mechanisms 20L and 20U of the elevating unit 20A are extended vertically, and the lift table 30 is set to a lift-up position positioned above the pit 12 to enable vehicle maintenance.

  The vehicle lift device 10 includes front and rear turning arms 32 on the side of the lift table 30. Each turning arm 32 includes a receiving member 32A that turns from the side of the lift table 30 toward the lower portion of the vehicle and supports the vehicle by contacting a lift point defined on the lower surface of the vehicle.

  However, in the vehicle lift device 10, as shown in FIGS. 3 and 4, when the lift table 30 is lifted from the opening 12 </ b> A of the pit 12, an operator under the lift table 30 is closed by closing the opening 12 </ b> A. As a pit cover 40 for improving maintenance workability such as walking, a first cover 41 and a second cover 42 are provided.

  In FIGS. 1 and 4, reference numeral 40 (12A) indicates that the pit cover 40 is accommodated in the opening 12A of the pit 12, and reference numeral 41L (12L) indicates that a left belt-like cover portion 41L described later of the first cover 41 is located in the left pit gap 12L. 41R (12R) fits a right belt-like cover portion 41R (described later) of the first cover 41 into the right pit gap 12R, and 41C (12G) places a center cover portion 41C (described later) of the first cover 41 into the rear pit gap 12G. The space 42 (12F) indicates that the second cover 42 is within a front pit gap 12F, which will be described later.

  The pit cover 40 (first cover 41, second cover 42) is set at a pit closing position that closes the opening 12A when the lift table 30 is lifted from the opening 12A of the pit 12. The pit cover 40 (the first cover 41 and the second cover 42) is set at a storage position in the pit that is stored inside the pit 12 when the lift table 30 is lowered to the lift-down position.

Here, in the opening 12A of the pit 12, left and right pit gaps 12L and 12R are formed, and front and rear pit gaps 12F and 12G are formed. That is, when the lift table 30 is raised to the lift-up position, within the opening 12A of the pit 12,
i. Both the left and right side portions of the X link mechanism 20L in the width direction perpendicular to the longitudinal direction of the first and second links 21 and 22 constituting the lower X link mechanism 20L (in the case of only one) The left and right pit gaps 12L and 12R are formed,
ii. Front and rear pit gaps 12F and 12G are formed at both longitudinal ends of the X link mechanism 20L along the longitudinal direction of the first and second links 21 and 22 forming the X link mechanism 20L. The

  Specifically, the left and right pit gaps 12L and 12R are defined by the left and right opening edges of the opening 12A of the pit 12 and the left and right outer surfaces of the X link mechanism 20L (in this embodiment, the link plate surface of the second link 22). It consists of a gap between the two. Specifically, the front and rear pit gaps 12F and 12G are formed by a gap between the front and rear opening edges of the opening 12A of the pit 12 and the intersection 20J of both the links 21 and 22 in the X link mechanism 20L.

  The first cover 41 extends so as to correspond to at least one of the left and right pit gaps 12L and 12R. The first cover 41 of this embodiment extends so as to correspond to both the left and right pit gaps 12L and 12R.

  The first cover 41 is set at a pit closing position that closes both the left and right pit gaps 12L and 12R when the lift table 30 is raised above a first lift position H1 (for example, a lift 314 mm position described later). When the lift table 30 is set lower than the first lift position H1, it is driven so as to be stored in the pit 12.

  Further, the first cover 41 can be provided corresponding to at least the left and right pit gaps 12L and 12R, and the front and rear pit gaps 12F and 12G.

  In the present embodiment, the first cover 41 is provided corresponding to the rear pit gap 12G in addition to the left and right pit gaps 12L and 12R. Accordingly, the first cover 41 is joined to the left and right belt-like cover portions 41L and 41R corresponding to both the left and right pit gaps 12L and 12R, and the base end side portion of the belt-like cover portions 41L and 41R, and the rear pit gap It has a central cover part 41C corresponding to 12G.

  The second cover 42 extends so as to correspond to at least one of the front and rear pit gaps 12F and 12G. The second cover 42 of this embodiment extends so as to correspond to the front pit gap 12F. Here, the second cover 42 lowers the lift table 30 to the lift-down position, and both the links 21 and 22 are moved up and down on both sides of the intersection 20J of the first link 21 and the second link 22 in a prone state. It extends to the depth of the V space that divides and divides.

  The second cover 42 has a second lift position H2 in which the lift table 30 is higher than the above-described first lift position H1 (for example, a lift 730 mm position determined in a process of reaching a lift 1000 mm from a lift 700 mm described later). ) When the lift table 30 is set to a position lower than the second lift position H2 and is driven to be set at a pit closing position that closes the front pit gap 12F in a state where the pit 12 is lifted higher. Driven to be housed inside.

  In the vehicle lift device 10, the first cover 41 and the second cover 42 are driven in conjunction with the lifting operation of the lift table 30 by the lifting device 20.

(Driving mechanism of the first cover 41) (FIG. 5)
As shown in FIG. 5, the first cover 41 can be tilted up and down at a plurality of positions between the frame 51 of the first cover 41 and the gantry 13 provided in the pit 12 (a total of four positions of two positions in the front and rear). It is supported by a plurality of pedestals 52 provided in the.

  The first cover 41 includes a first shutter 111 (to be described later) connected to the tip of the central cover portion 41C of the first cover 41.

  The pedestal 52 is raised by the force of the urging means (a tension spring in this embodiment) 53, and the first cover 41 is set at the pit closed position.

  In the process in which the X link mechanisms 20L and 20U contract vertically, the pedestal 52 starts to tilt against the force of the urging means 53 by the release operator 54 that moves together with the X link mechanisms 20L and 20U. In the process in which 20L and 20U are further shrunk vertically and the lift table 30 is placed in the pit 12, it is pushed and tilted by the pressing operator 55 that moves together with the X link mechanisms 20L and 20U, and the first cover 41 is placed inside the pit 12. Can be stored. In this embodiment, the release operator 54 and the press operator 55 are constituted by a release / press operator 56 provided on the side of the lift table 30.

  Here, the pedestal 52 has two folding rods 52A and 52B that are pin-coupled at their connection points, the upper end of one folding rod 52A is pin-coupled to the frame 51 of the first cover 41, and the other folding rod. The lower end portion of 52B is pin-coupled to the gantry 13, and both folding rods 52A and 52B are erected by the force of the urging means 53 so as to be locked at the toggle lock position. The front and rear pedestal columns 52 are connected to each other at the connecting points of the folding rods 52A and 52B by the tuning link 57, and exert the tensile force of the urging means 53 attached to the gantry 13 on the tuning link 57. , 52B are set to the toggle lock position.

  Note that the pedestal 52 (the column 62 for the second cover 42 to be described later) is also formed by a recess provided on the back surface in the pulling direction by the urging means 53 of the folding bar 52A and the urging means 53 of the folding bar 52B. The convex portion provided on the back surface with respect to the pulling direction is engaged with the pulling force of the urging means 53 to stand. When the pedestal 52 is raised and in the toggle lock position, the connecting point of the folding bars 52A and 52B is closer to the tension side of the biasing means 53 than the straight line connecting the upper end of the folding bar 52A and the lower end of the folding bar 52B. It is positioned and the pedestal 52 made of a toggle link can be locked.

  Further, a release lever 58 is pivotally supported on the frame 51 of the first cover 41, and one end of the connecting arm 59 is pin-coupled to the release lever 58, and the other end long hole portion of the release arm 59 is one of the front and rear leg columns. It is possible to engage with a connecting pin provided on the folding bar 52A. When the first cover 41 is in the pit closed position, the pedestal 52 in the standing position pulls the release lever 58 via the connecting arm 59 by the force of the biasing means 53, and positions the release lever 58 in the standby position. When the first cover 41 starts to be stored in the pit 12, the release / pressing operation element 56 (the release operation element 54 and the pressing operation element 55) provided on the lift table 30 presses the release lever 58, and the release lever 58 is started to swing from the standby position, and the setting is changed to the toggle lock release operation position. The release lever 58 is a leg against the force of the urging means 53 during the swing period from the toggle lock release operation position to the stop of a swing stopper (not shown) provided on the frame 51 of the first cover 41. A tilting force is applied to the column 52, the folding rods 52A and 52B are folded from the toggle lock position into a square shape, the leg column 52 is tilted, and the first cover 41 is lowered into the pit 12 to start storing. After the release lever 58 hits the swing stopper, the release / pressing operator 56 (the release operator 54 and the pressing operator 55) provided on the lift table 30 further presses the release lever 58, and the release lever 58 is rocked. The first cover 41 is further pushed down into the pit 12 via the moving stopper and set to the pit storage position. At this time, although the release lever 58 and the connection arm 59 do not move relative to the first cover 41, the folding rod 52 </ b> A of the pedestal 52 that further tilts when the first cover 41 is lowered is the other end long hole portion of the connection arm 59. It becomes something that moves against.

  When the first cover 41 is raised from the pit storage position inside the pit 12 and set to the pit closing position, the urging means 53 and the release / pressing operator 56 (the releasing operator 54 and the pressing operator 55) are The pedestal 52 is erected by operating reversely to the above.

(Driving mechanism of the second cover 42) (FIG. 6)
As shown in FIG. 6, the second cover 42 has a base end portion on the side farther from the X link mechanisms 20L and 20U in the longitudinal direction of the X link mechanisms 20L and 20U in the frame 61 of the second cover 42. The cover 41 is supported by a support column 62 provided on a support 51 </ b> A fixed to the frame 51 so as to be able to rise and fall. Further, the second cover 42 is provided at the second link 22 constituting the X link mechanism 20L with a distal end portion on the side close to the X link mechanisms 20L and 20U in the longitudinal direction of the X link mechanisms 20L and 20U. It is supported by the guide part 63 so as to be guided in the vertical direction. The guide portion 63 can be constituted by a guide rail provided on the upper edge of the link plate of the second link 22 (or the side surface of the link plate), and a guide roller 64 provided on the lower surface of the second cover 42 is provided on the second cover 42. It is placed and guided on the guide portion 63 by its own weight.

  The second cover 42 is provided with a second shutter 121 (FIG. 4B), which will be described later, connected to the tip of the second cover 42.

  The support column 62 is raised by the force of the urging means 65 (a tension spring in this embodiment), and the second cover 42 is set at the pit closed position.

  In the process in which the X link mechanisms 20L and 20U contract vertically, the pedestal 62 is applied to the force of the biasing means 65 by a release operator 66 (a release arm 67 and a connection arm 68 described later) provided in the X link mechanisms 20L and 20U. The X link mechanism 20L, 20U is further tilted up and down, and the lift table 30 is placed in the pit 12 while the X link mechanism 20L, 20U is further contracted up and down, so that the X link mechanism 20L, 20U is pressed by the pressing operator 69 and tilted. Thus, the second cover 42 can be stored inside the pit 12. In this embodiment, the pressing operator 69 is constituted by a pressing roller provided on the first link 21, and the pressing roller presses the support 62 through the second cover 42.

  In this embodiment, the first cover 41 has left and right belt-like cover portions 41L and 41R corresponding to the left and right pit gaps 12L and 12R, and a support column 62 on which the second cover 42 is supported is provided to be able to be tilted up and down. The support portion 51 </ b> A is fixed to the bridging portion 51 </ b> B that spans the tip side portions of the left and right belt-like cover portions 41 </ b> L and 41 </ b> R of the first cover 41.

  Here, the column 62 is pin-coupled with the two folding rods 62A and 62B at their connection points, the upper end of one folding rod 62A is pin-coupled to the frame 61 of the second cover 42, and the other folding rod 62B. The lower end portion of the first cover 41 is pin-coupled to a support portion 51A fixed to the frame 51 of the first cover 41, and the folding rods 62A and 62B can be raised by the force of the biasing means 65 to be locked at the toggle lock position. ing.

  Further, a release operator 66 that starts tilting the column 62 against the force of the biasing means 65 includes a release arm 67 and a connecting arm 68. The release arm 67 is fixed to the lower end portion of the second link 22 of the X link mechanism 20L near the lower end roller (lower end portion) 22A. The connecting arm 68 is pin-coupled to a connecting point between the two folding bars 62A and 62B constituting the support column 62. The distal end portion (front end roller) of the release arm 67 and the connection arm 68 are configured to be connectable, and the front end roller 67A of the release arm 67 is inserted into the elongated hole portion 68A of the connection arm 68 so as to be connectable. When the second cover 42 is in the pit closed position, the release arm 67 is located in the elongated hole portion 68A of the connecting arm 68 so that the leading end roller 67A is not engaged with the elongated hole portion 68A in its longitudinal direction. If it does, it will not be connected with connecting arm 68. When the second cover 42 starts to be accommodated in the pit 12, the release arm 67 couples the leading end roller 67 </ b> A to the elongated hole portion 68 </ b> A of the coupling arm 68 in the longitudinal direction, in other words, coupled to the coupling arm 68. The force for releasing the toggle lock that folds the folding rods 62A and 62B of the support column 62 from the toggle lock position into a dogleg shape can be applied to the support column 62.

  Hereinafter, the drive procedure of the 1st cover 41 and the 2nd cover 42 in the vehicle lift apparatus 10 is demonstrated (FIGS. 7-19). When the lift table 30 is lifted and lowered between the lift-down position (the lift 0 mm position) and the lift-up position (the lift 1800 mm position) by the lifting device 20, the first cover 41 is driven in conjunction with the lift operation of the lift table 30. The change of the second cover 42 is shown by (A) in FIGS. 7 to 19, and the change of the second cover 42 is shown by (B) in FIGS. 7 to 19.

  In the following steps 1 to 13, the first cover 41 and the second cover 41 in the lift-up process in which the lift table 30 is lifted from the lift 0 mm position (lift-down position) to the lift 1800 mm position (lift-up position) by the lifting device 20. The drive state of the cover 42 is shown. The drive state of the first cover 41 and the second cover 42 in the lift-down process in which the lift table 30 is lowered from the lift 1800 mm position (lift-up position) to the lift 0 mm position (lift-down position) by the lifting device 20 is as follows. This is based on the procedure in step 1.

Step 1. Lift table 30 lift 0mm (lifted down) (Fig. 7)
(First cover 41) (FIG. 7A)
A state in which the release / pressing operator 56 provided on the lift table 30 presses the release lever 58 provided on the frame 51 of the first cover 41, and the release lever 58 abuts against a swing stopper provided on the frame 51. It is in. The pedestal 52 is tilted to the maximum against the force of the urging means 53 by the pressing force of the release / pressing operation element 56, and the first cover 41 supported by the pedestal 52 is placed at the top of the pit 12. Set to the lower pit storage position.

(Second cover 42) (FIG. 7B)
The first cover 41 is set to the above-described pit storage position with the support 62 supporting the base end portion of the second cover 42 provided on the support portion 51A fixed to the frame 51 of the first cover 41. As a result, the second cover 42 is also set at the bottom of the pit 12. At this time, the release arm 67 of the release operator 66 provided on the second link 22 of the X link mechanism 20L contracted to the maximum applies a toggle lock release force to the support 62 via the connection arm 68. The column 62 is tilted and maintained against the force of the urging means 65 (the second cover 42 is spaced downward from the pressing operator 69 provided on the first link 21, but the rods 62 </ b> A and 62 </ b> B of the column 62 are attached. It is not set by the force of the urging means 65 to the toggle lock position).

  A guide roller 64 provided on the lower surface of the distal end portion of the second cover 42 is guided by a guide portion 63 provided on the second link 22 of the X link mechanism 20 </ b> L contracted to the maximum, and is set at the lowermost portion in the pit 12.

  As a result, the second cover 42 is set at the lowermost pit storage position in the pit 12.

Step 2. Lift table 30 lift 39 mm (Fig. 8)
(First cover 41) (FIG. 8A)
As the lift table 30 is lifted by the lifting device 20 and the release and pressing operation element 56 provided on the lift table 30 is lifted, the folding bars 52A and 52B of the pedestal 52 start to rise by the force of the biasing means 53. The first cover 41 starts to rise in the pit 12 while pressing the release lever 58 provided on the frame 51 of the first cover 41 against the release / pressing operator 56.

(Second cover 42) (FIG. 8B)
The second cover 42 starts to rise in the pit 12 as the first cover 41 starts to rise as described above.

  At this time, the column 62 supporting the base end portion of the second cover 42 is tilted and maintained against the force of the biasing means 65 due to the presence of the release operation element 66 as in the step 1, but the second cover 42 rises and comes into contact with the pressing operation element 69 provided on the first link 21. The guide roller 64 provided on the lower surface of the distal end portion of the second cover 42 is guided by the guide portion 63 provided on the second link 22.

Step 3. Lift table 30 lift 100 mm (Fig. 9)
(First cover 41) (FIG. 9A)
The first cover 41 continues to rise in the pit 12 as in step 2.

(Second cover 42) (FIG. 9B)
As the first cover 41 continues to rise as described above, the second cover 42 also continues to rise in the pit 12.

  At this time, the release arm 67 of the release operator 66 provided on the second link 22 displaced along with the extending operation of the X link mechanism 20L is released from the connection arm 68, and the folding rods 62A and 62B of the support column 62 are released. It begins to get up by the force of the urging means 65. The second cover 42 continues to rise in the pit 12 while being controlled to rise by hitting the pressing operator 69 provided on the first link 21. The guide roller 64 provided on the lower surface of the distal end portion of the second cover 42 is guided by the guide portion 63 provided on the second link 22.

Step 4. Lift table 30 lift 200 mm (Fig. 10)
(First cover 41) (FIG. 10A)
The first cover 41 continues to rise in the pit 12 as in step 3.

(Second cover 42) (FIG. 10B)
As the first cover 41 continues to rise as described above, the second cover 42 continues to rise in the pit 12 in the same manner as in Step 3.

Step 5. Lift table 30 lift 276mm (Fig. 11)
(First cover 41) (FIG. 11A)
The first cover 41 continues to rise in the pit 12 as in step 4. When the force of the biasing means 53 reaches the connecting arm 59 and eventually the release lever 58 via the synchronization link 57 and the pedestal 52 along with the rise, the release lever 58 is separated from the swing stopper provided on the frame 51 and toggle-locked. The setting is changed to the release operation position. As a result, during the lift-up process in which the lift table 30 is moved from the lift 276 mm position to the lift 314 mm position, the folding bars 52 A and 52 B of the pedestal 52 are brought up by the force of the biasing means 53.

  When the lift table 30 reaches the lift position of 276 mm from the lift position of 314 mm during the lift-down process, the release / pressing operator 56 provided on the lift table 30 contacts the release lever 58 provided on the frame 51 of the first cover 41. The release lever 58 is changed from the standby position to the toggle lock release operation position, and the folding bars 52A and 52B of the pedestal 52 are deformed from the standing state to the toggle lock release state by the force of the biasing means 53. And then leans down.

(Second cover 42) (FIG. 11B)
As the first cover 41 continues to rise as described above, the second cover 42 continues to rise in the pit 12 as in step 4.

Step 6. Lift table 30 lift 314mm (Fig. 12)
(First cover 41) (FIG. 12A)
When the lift table 30 continues to rise in the pit 12 and reaches a first lift position H1 (for example, a lift position of 314 mm), a release / press operator 56 (release operator 54 and press operator 55 provided on the lift table 30). ) Is separated from the release lever 58 provided on the frame 51 of the first cover 41, and the release lever 58 is changed from the toggle lock release operation position to the standby position.

  As a result, when the lift table 30 rises to a higher position than the lift position of 314 mm in the lift-up process, the folding rods 52A and 52B of the pedestal 52 are set to the toggle lock position by the force of the urging means 53. The first cover 41 is set at a pit closing position that closes the left and right pit gaps 12L and 12R and the rear pit gap 12G at the opening surface level of the pit 12 and stops rising.

  When the lift table 30 reaches the lift position of 314 mm during the lift-down process, the release / pressing operator 56 provided on the lift table 30 contacts the release lever 58 provided on the frame 51 of the first cover 41, and the release lever 58 is changed from the standby position to the toggle lock release operation position. The release lever 58 applies a tilting force to the pedestal 52 via the synchronization link 57, and the folding bars 52A and 52B of the pedestal 52 are deformed from the standing state to the toggle lock released state against the force of the urging means 53. Start leaning.

(Second cover 42) (FIG. 12B)
In the process in which the first cover 41 continues to rise as described above, the second cover 42 continues to rise in the pit 12 in the same manner as in Step 5. After that, when the first cover 41 is set to the pit closed position as described above and stopped and lifted, the support portion 51A provided on the frame 51 of the first cover 41 so as to support the column 62 of the second cover 42 is also lifted and stopped. It leads to.

Step 7. Lift table 30 lift 435mm (Fig. 13)
(First cover 41) (FIG. 13A)
The first cover 41 continues to be set at a pit closing position where the left and right pit gaps 12L and 12R of the pit 12 and the rear pit gap 12G are closed.

(Second cover 42) (FIG. 13B)
The second cover 42 is supported by a support portion 51A provided on the frame 51 of the first cover 41 set at the pit closed position with the base end portion positioned at the opening surface level of the pit 12 via the support 62. The front end portion of the second link 22 is supported by a guide portion 63 provided on the second link 22 via a guide roller 64. The folding rods 62A and 62B of the support column 62 are raised toward the toggle lock position by the force of the urging means 65, and the second cover 42 supported by the support column 62 contacts the pressing operation element 69 provided on the first link 21. Keep in touch.

Step 8. Lift table 30 lift 500 mm (FIG. 14)
(First cover 41) (FIG. 14A)
The first cover 41 continues to be set at a pit closing position where the left and right pit gaps 12L and 12R of the pit 12 and the rear pit gap 12G are closed.

(Second cover 42) (FIG. 14B)
The second cover 42 is supported by a support portion 51A provided on the frame 51 of the first cover 41 set at the pit closed position with the base end portion positioned at the opening surface level of the pit 12 via the support 62. The front end portion of the second link 22 is supported by a guide portion 63 provided on the second link 22 via a guide roller 64.

  During the lift-up process of the lift table 30, the pressing operator 69 provided on the first link 21 of the X link mechanism 20 </ b> L that continues to extend is separated upward from the second cover 42. At this time, the release arm 67 of the release operator 66 provided on the second link 22 engages with the connecting arm 68, and the folding rods 62 </ b> A and 62 </ b> B of the column 62 are under the interaction of the biasing means 65 and the release operator 66. To restrict to the toggle lock release position.

Step 9. Lift table 30 lift 600 mm (Fig. 15)
(First cover 41) (FIG. 15A)
The first cover 41 continues to be set at a pit closing position where the left and right pit gaps 12L and 12R of the pit 12 and the rear pit gap 12G are closed.

(Second cover 42) (FIG. 15B)
Similarly to step 8, the second cover 42 is supported by the support portion 51A provided on the frame 51 of the first cover 41 and the guide portion 63 provided on the second link 22.

  At this time, the folding rods 62A and 62B of the support column 62 are in the toggle lock release position under the interaction of the urging means 65 and the release operator 66, but stand up closer to the toggle lock position than in step 8. Become.

Step 10. Lift table 30 lift 700 mm (Fig. 16)
(First cover 41) (FIG. 16A)
The first cover 41 continues to be set at a pit closing position where the left and right pit gaps 12L and 12R of the pit 12 and the rear pit gap 12G are closed.

(Second cover 42) (FIG. 16B)
Similarly to step 9, the second cover 42 is supported by the support portion 51A provided on the frame 51 of the first cover 41 and the guide portion 63 provided on the second link 22.

  At this time, the folding rods 62 </ b> A and 62 </ b> B of the column 62 stand at the boundary position between the toggle lock release position and the toggle lock position under the interaction between the urging means 65 and the release operator 66.

Step 11. Lift table 30 lift 1000 mm (Fig. 17)
(First cover 41) (FIG. 17A)
The first cover 41 continues to be set at a pit closing position where the left and right pit gaps 12L and 12R of the pit 12 and the rear pit gap 12G are closed.

(Second cover 42) (FIG. 17B)
Similarly to step 10, the second cover 42 is supported by the support portion 51 </ b> A provided on the frame 51 of the first cover 41 and the guide portion 63 provided on the second link 22.

  At this time, the lift table 30 continues to rise in the pit 12 and in the process of reaching the second lift position H2 (the lift height of 700 mm to the lift height of 1000 mm) higher than the first lift position H1 (for example, the lift height of 314 mm). (For example, at a lifting position of 730 mm), the folding rods 62A and 62B of the column 62 supporting the base end portion of the second cover 42 are brought into a toggle lock position where they are aligned with each other by the force of the biasing means 65. It is set and locked, and its base end portion is stably positioned at the opening surface level of the pit 12.

  When the lift table 30 reaches the above-described second lift position H2, the guide roller 64 provided on the lower surface of the distal end portion of the second cover 42 is guided by the guide portion 63 provided on the second link 22, and the distal end portion is also It is stably positioned at the opening surface level of the pit 12.

  As a result, when the lift table 30 rises to a position higher than the lift position of 1000 mm in the lift-up process, the second cover 42 is set at a pit closing position that closes the front pit gap 12F at the opening surface level of the pit 12. Stop rising.

  Although the release arm 67 of the release operator 66 provided on the second link 22 is displaced with the extension operation from the step 10 of the X link mechanism 20L, the tip roller 67A of the release arm 67 is connected to the connection arm 68. It does not move in the long hole portion 68A and does not give the force for releasing the toggle lock to the folding rods 62A and 62B of the support column 62 (the same applies to the steps 12 and 13).

Step 12. Lift table 30 lift 1500mm (Fig. 18)
(First cover 41) (FIG. 18A)
The first cover 41 continues to be set at a pit closing position where the left and right pit gaps 12L and 12R of the pit 12 and the rear pit gap 12G are closed.

(Second cover 42) (FIG. 18B)
The second cover 42 continues to be set at the pit closing position where the pit gap 12F in front of the pit 12 is closed.

Step 13. Lift table 30 lift 1800 mm (lifted up) (FIG. 19)
(First cover 41) (FIG. 19A)
The first cover 41 continues to be set at a pit closing position where the left and right pit gaps 12L and 12R of the pit 12 and the rear pit gap 12G are closed.

(Second cover 42) (FIG. 19B)
The second cover 42 continues to be set at the pit closing position where the pit gap 12F in front of the pit 12 is closed.

  As shown in FIG. 4A, the vehicle lift device 10 has a leading edge that faces the X link mechanism 20L in the central cover portion 41C of the first cover 41 that can close the pit gap 12G behind the pit 12. The lower end portion of the first shutter 111 is pivotally supported by this portion. The first shutter 111 is provided along the upper edge of the first link 21 that faces the external space of the pit 12 in the process of raising the lift table 30 from the opening 12 </ b> A of the pit 12.

  In the present embodiment, the first shutter 111 is leaned against the outer periphery of the cylinder 26 </ b> A in the hydraulic cylinder device 26 extending between the left and right link plates of the first link 21, so that the upper edge portion of the first link 21. To be provided. In the process of raising the lift table 30 from the opening 12A of the pit 12, the upper end of the first shutter 111 slides in contact with the outer periphery of the cylinder 26A in the longitudinal direction, and as a result, the first link 21 provided on both sides of the cylinder 26A. It is provided along the upper edge portions of the left and right link plates. The first shutter 111 may lean directly on the upper edge of the first link 21.

  Further, as shown in FIG. 4 (B), the vehicle lift device 10 has a second shutter at the front end edge facing the X link mechanism 20L in the second cover 42 that can close the pit gap 12F in front of the pit 12. The lower end of 121 is pivotally supported. The second shutter 121 is provided along the upper edge of the second link 22 that faces the external space of the pit 12 in the process of raising the lift table 30 from the opening 12 </ b> A of the pit 12.

  In the present embodiment, the second shutter 121 is provided along the upper edge of the second link 22 by leaning against the outer surface of the connecting plate 25 connecting the left and right link plates of the second link 22. In the process of raising the lift table 30 from the opening 12A of the pit 12, the upper end portion of the second shutter 121 is slidably contacted with the outer surface of the connecting plate 25 in the longitudinal direction, and as a result, is provided along the upper edge portion of the second link 22. become. When the base end portion of the cylinder 26 </ b> A of the hydraulic cylinder device 26 is pin-coupled to the intermediate portion of the second link 22, the second shutter 121 may lean against the outer periphery of the cylinder 26 </ b> A in the hydraulic cylinder device 26.

  As a result, in the vehicle lift device 10, the open areas of the pit gap 12G behind the pit 12 and the front pit gap 12F are reduced as much as possible by the first shutter 111 and the second shutter 121, respectively. it can.

  Further, according to the vehicle lift device 10, the first shutter 111 is leaned against the first link 21 or the cylinder 26 </ b> A of the hydraulic cylinder device 26, so that the first shutter 111 can be easily connected to the upper edge of the first link 21. It can be provided along with the unit 210 and does not require a separate driving source for the first shutter 111.

  Further, the second shutter 121 is leaned against the second link 22 or the cylinder 26A of the hydraulic cylinder device 26, so that the second shutter 121 can be easily provided along the upper edge of the second link 22, A separate drive source for the second shutter 121 is not required.

According to the present embodiment, the following operational effects can be obtained.
(a) The pit cover 40 is divided into a first cover 41 and a second cover 42.
Under the condition that the lift table 30 is lifted above the first lift position H1 (low lift position (for example, lift 314 mm)), the first cover 41 causes at least the left and right pit gaps 12L and 12R (the first link 21 and the first link 21). The area where the two links 22 do not go in and out) is blocked.

  Under the condition that the lift table 30 is raised above the second lift position H2 (high lift position (for example, lift 730 mm)), the second cover 42 allows at least one of the front and rear pit gaps 12F and 12G (with the first link 21). The area where the second link 22 enters and exits) is blocked.

  When the lift table 30 reaches the lower lift position (first lift position H1) after the lift table 30 starts to rise from the lift-down position, the first cover 41, in other words, at least the left and right pit gaps of the pit 12 as early as possible. Block 12L and 12R.

  The second cover 42 rises to a position higher than the lift position (second lift position H2) from which the lift table 30 is lifted down, and V-shaped spaces on both sides of the intersection 20J of the first link 21 and the second link 22 The first link 21 (or the second link 22) that divides the pit 12 from above moves at least one of the front and rear pit gaps 12F and 12G of the pit 12 and then closes the front and rear pit gaps 12F and 12G. become.

  The first cover 41 closes at least the corresponding left and right pit gaps 12L and 12R as early as possible without waiting for the arrival of the pit closing timing by the second cover 42 in the process of ascending the lift table 30, and the operator Maintenance workability can be improved.

  (b) The first cover 41 includes strip-shaped cover portions 41L and 41R and a central cover portion 41C coupled to the base end side portions of the strip-shaped cover portions 41L and 41R. As a result, the first cover 41 closes at least the corresponding left and right pit gaps 12L and 12R and the other pit gap between the front and rear as soon as possible, further improving the maintenance workability of the operator.

  (c) The first cover 41 and the second cover 42 are driven in conjunction with the lifting operation of the lift table 30 by the lifting device 20. In order to drive the first cover 41 and the second cover 42, a separate drive source is not required, and the first cover 41 and the second cover 42 can be driven in a reliable manner in association with the lifting operation of the lift table 30.

  (d) The drive mechanism of the first cover 41 includes the plurality of pedestals 52, the urging means 53, the release operation element 54, and the pressing operation element 55 (release and pressing operation element 56). 41 can be reliably linked to the lifting operation of the lift table 30 and driven.

  (e) The drive mechanism of the second cover 42 is constituted by the support 62, the guide portion 63, the urging means 65, the release operation element 66, and the pressing operation element 69, so that the second cover 42 is lifted and lowered by the lift table 30. It can be driven in a surely linked manner.

  (f) A support portion 51A provided with a support column 62 for supporting the second cover 42 so as to be able to be tilted up and down is provided on a bridging portion 51B spanning the left and right belt-like cover portions 41L and 41R of the first cover 41. Fixed. The support portion 51A for the support column 62 of the second cover 42 can be stably fixed to the belt-like cover portions 41L and 41R of the first cover 41.

  (g) The support column 62 of the second cover 42 is constituted by two folding rods 62A and 62B constituting a toggle mechanism, and the release operator 55 is constituted by a release arm 67 and a connecting arm 68. As a result, the second cover 42 can be driven in a reliable manner in association with the lifting operation of the lift table 30.

  The vehicle lift device 10A shown in FIG. 20 is different from the vehicle lift device 10 shown in FIGS. 1 to 19 in that the elevating unit 20A of the elevating device 20 is configured by only one stage of the X link mechanism 20L. That is.

  Even in the vehicle lift device 10A, the pit cover 40 that closes the opening 12A (the left and right pit gaps 12L and 12R and the front and rear pit gaps 12F and 12G) of the pit 12 is the same as that in the vehicle lift device 10. The first cover 41 and the second cover 42 can be configured.

  The embodiment of the present invention has been described in detail with reference to the drawings. However, the specific configuration of the present invention is not limited to this embodiment, and even if there is a design change or the like without departing from the gist of the present invention. It is included in the present invention. For example, in a vehicle lift device, a pit gap is provided in only one of the left and right side portions in the width direction of the X link mechanism perpendicular to the longitudinal direction of both links constituting the X link mechanism in the pit opening. In such a case, the first cover closes only the left and right pit gaps.

  According to the present invention, when the lift table is lifted from the lift-down position, the opening of the pit can be blocked as early as possible.

10, 10A Vehicle lift device 11 Floor 12 Pit 12A Opening 12L, 12R Left and right pit gaps 12F, 12G Front and rear pit gaps 14 Rotating support 15 Slide support 20 Lifting device 20A Lift 20L, 20U X link mechanism 20J , 20K Intersection 21 First link 22 Second link 30 Lift table 40 Pit cover 41 First cover 41L, 41R Strip cover 41C Center cover 42 Second cover 51 Frame 51A Support 51B Bridge 52 Pole 52A, 52B Folding rod 53 Energizing means 54 Release operation element 55 Pressing operation element 56 Release and pressing operation element 61 Frame 62 Strut 63 Guide portion 64 Guide roller 65 Energizing means 66 Release operation element 67 Release arm 68 Connecting arm 69 Pressing operation element

Claims (7)

A pit is provided on the floor of the maintenance area, the lower end of the first link of the lifting device is pivotally supported by a rotation support provided on one end of the interior of the pit, and the lower end of the second link is connected to the inside of the pit. An X link mechanism that is slidably supported by a sliding support portion provided on the end side, and that links these two links at an X-shaped intersection, can be vertically expanded and contracted, and the lift mounted on this X link mechanism The table can be moved up and down between a lift-down position that positions the table at the opening of the pit and closes the opening, and a lift-up position that is positioned above the pit,
When the lift table is lifted from the pit opening, it is set to a pit closing position that closes the opening, and when the lift table is lowered to the lift down position, it is set to a pit storage position that is stored inside the pit. In a vehicle lift device having a pit cover,
When the lift table is raised to the lift-up position, pits are formed in at least one of the left and right side portions of the X link mechanism in the width direction perpendicular to the longitudinal direction of both links constituting the X link mechanism within the pit opening. A gap is formed, and front and rear pit gaps are formed on both front and rear sides in the longitudinal direction of the X link mechanism along the longitudinal direction of both links forming the X link mechanism.
As the pit cover, a first cover extending so as to correspond to at least one of the left and right pit gaps, and corresponding to at least one of the front and rear pit gaps, the lift table is lowered to a lift-down position and is in a prone state. A first cover and a second cover extending on a V-shaped space on both sides of a crossing portion of the second link, the links being partitioned from above and below,
The first cover is driven so as to be set at a pit closed position that closes at least one of the left and right pit gaps in a state where the lift table is raised above the first lift position, and the lift table is in the first lift position. Driven to be stored inside the pit when set lower,
The second cover is driven such that the lift table is set at a pit closing position that closes at least one of the front and rear pit gaps in a state where the lift table is raised above the second lift position higher than the first lift position. A lift device for a vehicle, wherein the lift table is driven so as to be housed in a pit when the lift table is set lower than the second lift position.   The first cover is provided corresponding to at least one of the left and right pit gaps and the other front and rear pit gap, and is coupled to a belt-like cover portion corresponding to at least one of the left and right pit gaps and a base end side portion of the belt-like cover portion The vehicle lift device according to claim 1, further comprising a center cover portion corresponding to the other pit gap between the front and rear sides.   The vehicle lift device according to claim 1 or 2, wherein the first cover and the second cover are driven in conjunction with a lifting operation of the lift table by the lifting device. The first cover is supported by a plurality of pedestals provided in a plurality of positions between a frame of the first cover and a gantry provided inside the pit so as to be able to rise and fall,
The pedestal is raised by the force of the biasing means, the first cover is set in the pit closed position,
The pedestal starts to tilt against the force of the urging means by the release operation element that moves together with the X link mechanism in the process in which the X link mechanism contracts up and down, and the X link mechanism further contracts up and down to lower the lift table. 4. The vehicle lift device according to claim 3, wherein the first cover can be stored inside the pit by being pushed and tilted by a pressing operator moving together with the X link mechanism in the process of being accommodated in the pit. The second cover is supported by a support column provided at a support portion fixed to a frame of the first cover, with an end portion far from the X link mechanism in the longitudinal direction of the X link mechanism. The end portion on the side close to the X link mechanism in the longitudinal direction of the link mechanism is guided in the vertical direction by a guide portion provided on one of the first and second links constituting the X link mechanism. Supported,
The column is raised by the force of the biasing means, the second cover is set at the pit closed position,
As the X link mechanism contracts up and down, the column starts tilting against the force of the urging means by the release operator provided on the X link mechanism, and the X link mechanism further contracts up and down to pit the lift table. 5. The vehicle lift device according to claim 3, wherein the second cover can be stored inside the pit by being pressed and tilted by a pressing operator provided in the X-link mechanism in the process of being housed in the X-link mechanism.   When the first cover has left and right belt-like cover portions corresponding to the left and right pit gaps, the support portion provided with the support column for supporting the second cover so that it can be tilted is provided on the left and right belt-like cover portions of the first cover. The vehicle lift device according to claim 5, wherein the vehicle lift device is fixed to a bridging portion that spans the front end portion. The struts pin-couple two folding bars at the connection point, pin the upper end of one folding bar to the frame of the second cover, and fix the lower end of the other folding bar to the frame of the first cover It is configured so that it can be pin-coupled to the support portion, and can be locked at the toggle lock position by raising both folding bars by the force of the urging means,
The release operator that starts tilting the column against the force of the urging means includes a release arm that is fixed to the first or second link of the X link mechanism, and two folding rods that constitute the column. It consists of a connecting arm that is pin-coupled to the connecting point, and is configured to be able to connect the release operation part of the release arm and the connection part of the connection arm,
The vehicle according to claim 5 or 6, wherein the release arm is not connected to the connecting arm when the second cover is in the pit closed position, and is connected to the connecting arm when the second cover starts to be stored inside the pit. Lift device.

Images