JP5224854B2 - Vehicle lift device - Google Patents

Description

  The present invention relates to a vehicle lift device.

As a vehicle lift device, as disclosed in Patent Document 1, a lift table that is lifted and lowered by a lifting device can be stored in a pit, and has a pit cover that closes the opening of the pit when the lift table is positioned above the pit. There is something. At this time, the lifting device passes the piston rod of the cylinder embedded in the pit upward from a small opening provided in the pit cover, and a lift table is provided at the upper end of the piston rod. The pit cover is housed in the pit in conjunction with the lowering operation of the lift table to the pit by the lifting device.
Patent 3378908

  In the vehicle lift device described in Patent Document 1, when the pit cover moves up and down between the position where the pit cover closes the opening of the pit and the position stored in the pit, the outer periphery of the pit cover is moved to the inner periphery of the pit. Is guided by sliding in contact with the outer periphery of the piston rod of the cylinder.

  However, when the outer periphery of the pit cover is guided by sliding contact with the inner periphery of the pit, it is difficult to adjust the outer periphery of the pit cover and the inner periphery of the pit at the site where the pit is constructed. Further, when the small opening of the pit cover is slidably brought into contact with the outer periphery of the piston rod of the cylinder to be guided, the outer periphery of the piston rod may be scratched to cause a malfunction of the cylinder.

  An object of the present invention is to stably guide the vertical movement of the pit cover when the pit cover is stored in the pit in conjunction with the lowering operation of the lift table by the lifting device in the vehicle lift device.

  According to a first aspect of the present invention, there is provided a vehicular lift apparatus having a pit cover that can store a lift table that is lifted and lowered by the lift apparatus in a pit, and that covers the opening of the pit when the lift table is located above the pit. The cover can be raised and lowered and supported by a pedestal made of a toggle link that locks in the standing position, the pit opening is closed by the pit cover when the pedestal stands, and the pit cover is stored in the pit when the pedestal tilts In addition to urging the pedestal toward the standing position by the urging means, the pedestal is resisted against the urging action of the urging means by the tilting means interlocking with the lowering operation of the lift table to the pit by the lifting device. When tilting from the standing position and setting the lower limit stopper of the lift table stored in the pit in the pit, the pedestal tilts relative to the standing position The pit cover for vertically moving the opening-pit of the pit is obtained so as to guide the guide portion provided on the lower limit stopper.

  According to a second aspect of the invention, in the first aspect of the invention, a hole through which a lower limit stopper of a lift table penetrates is provided in the pit cover, and an opening / closing lid is provided in the hole.

  According to a third aspect of the present invention, in the first or second aspect of the present invention, the tilting means further comprises a release lever swingably provided on the pit cover, and the release lever is interlocked with the lowering operation of the lift table to the pit. Is swung from the standby position until it hits the swing stopper provided on the pit cover, and in the process of swinging, a tilting force is applied to the pedestal to tilt the pedestal. A pressing force into the pit is applied to the pit cover after the collision so that the pit cover is stored in the pit.

  According to a fourth aspect of the present invention, in the third aspect of the present invention, the release lever provided on the pit cover is provided with a swinging force from a release roller provided on a lifting portion of the lifting device.

  According to a fifth aspect of the present invention, in the invention according to any one of the first to fourth aspects, the pit cover is supported by a plurality of pedestals, and each pedestal is connected by a connecting link parallel to the pit cover. A parallel link mechanism is formed together with the cover and the connecting link.

(Claim 1)
(a) In a vehicle lift device, a lower limit stopper of a lift table stored in the pit is erected in the pit, and the pit moves up and down in the pit when the pedestal tilts with respect to the standing position. The cover is guided by a guide portion provided on the lower limit stopper. Using the lower limit stopper of the lift table as a guide part for the pit cover, the vertical movement of the pit cover can be stably guided.

(Claim 2)
(b) A hole through which the lower limit stopper of the lift table penetrates was provided in the pit cover, and an opening / closing lid was provided in the hole. While raising the lower limit stopper at an appropriate position in the pit, the lower limit stopper can be passed through the hole of the pit cover to stably guide the vertical movement of the pit cover. When the pit cover is in a position to close the opening of the pit, the hole can be closed with an opening / closing lid to prevent foreign matter from falling into the pit.

(Claim 3)
(c) The swingable release lever provided on the pit cover is used as a tilting means for the pedestal that supports the pit cover, and the tilting of the pedestal and the pushing of the pit cover into the pit are realized by a compact structure. it can.

(Claim 4)
(d) The release lever provided on the pit cover can be easily swung / pushed by the release roller provided on the lifting / lowering portion of the lifting / lowering device.

(Claim 5)
(e) The pit cover is supported by a plurality of pedestals, and each pedestal is connected by a connecting link that is parallel to the pit cover, and forms a parallel link mechanism with the pit cover and the connecting link. The pit cover can be stably supported by a plurality of parallelly moving pedestals, and the pit cover can be moved up and down stably.

  1 shows a lift device for a vehicle, (A) is a perspective view equipped with a curtain device, (B) is a perspective view with a front and rear curtain device removed, (C) is a perspective view with a side curtain device removed, FIG. FIG. 3 shows a lift device for a vehicle, (A) is a perspective view in which a curtain device is omitted, (B) is a perspective view in which a pit cover is omitted, and FIG. 3 is a perspective view in which a lift table of the vehicle lift device is raised, FIG. 4 is a perspective view in which a lift table of a vehicle lift device is stored, FIG. 5 is a side view in which the lift table of the vehicle lift device is raised, and FIG. 6 is a side view in which the lift table of the vehicle lift device is lowered. 7 shows a state in which the lift table of the vehicle lift device is stored, (A) is a side view, (B) is a schematic cross-sectional view, FIG. 8 shows a pedestal made of a toggle link, and (A) is a standing state. (B) is tilted FIG. 9 is a side view showing a side curtain device of the curtain device, FIG. 10 is a front view showing the side curtain device of the curtain device, and FIG. 11 is a side view of the curtain device. FIG. 12 is a front view showing the front / rear curtain device of the curtain device, FIG. 13 is a perspective view showing the front / rear curtain device of the curtain device, FIG. 14 shows the curtain device of the vehicle lift device, (A) is a side view showing a curtain device when the lift table is raised, (B) is a side view showing the curtain device when the lift table is lowered, and (C) is a curtain when the lift table is stored. FIG. 15 is a side view showing the hook of the curtain 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 each lifting device 20 on each of the left and right pits 12, 12 provided on the floor surface 11 of the automobile maintenance yard. This makes it possible to store the lift table 30 that is moved up and down.

  The elevating device 20 constitutes an elevating part 20A composed of an X link mechanism by pin-connecting the first and second links 21 and 22 intersecting in an X shape at the X-shaped intersecting part. The elevating part 20A connects the lower end roller 21A (sliding point) of the first link 21 (inner link) so as to be capable of reciprocating linear movement within the mount 13 embedded in the bottom of the pit 12, and the second link 22 (outer link). The lower end pivot point 22A of the first link 21 is pin-coupled to the gantry 13, and the upper end pivot point 21B of the first link 21 is pin-coupled to the main table 31 of the lift table 30, and the upper end roller 22B (sliding point) of the second link 22 is coupled. ) In the lower surface of the main table 31 so as to be capable of reciprocating linear movement so that the lift table 30 can be moved up and down in a horizontal state. The elevating device 20 interposes a hydraulic cylinder 23 between the gantry 13 and the intermediate portion in the longitudinal direction of the first link 21, and contracts the X link mechanism of the elevating unit 20 </ b> A up and down by the contraction operation of the hydraulic cylinder 23. The lift table 30 is stored in the pit 12 and the lift table 30 is set at the same level as the floor surface 11 so that the vehicle can pass through. By extending the hydraulic cylinder 23, the X link mechanism of the elevating unit 20A is extended vertically, and the lift table 30 is raised upward from the pit 12. Note that the main table 31 of the lift table 30 stored in the pit 12 strikes the two upper and lower positions on the lower surface of the bar-shaped lower limit stopper 14 standing at the two front and rear positions in the pit 12. At the same time, the descending end is regulated.

  Hereinafter, each of (A) the pit cover 40, (B) the vertical movement device 50 of the pit cover 40, and (C) the curtain device 60 provided in the vehicle lift device 10 will be described in detail.

(A) Pit cover 40 (FIGS. 3 to 7)
As shown in FIG. 3, the vehicle lift device 10 includes a pit cover 40 that closes the opening 12 </ b> A of the pit 12 when the lift table 30 is positioned above the pit 12. In the pit cover 40, a rectangular small opening 40A through which the first link 21 and the second link 22 of the lifting device 20 are inserted and exited is cut out at the center, and the middle of the first link 21 and the second link 22 in the longitudinal direction. The lift table 30 is stored in the pit 12 and is extended to a range that is sandwiched between the first link 21 and the second link 22 that are in a prone state. The pit cover 40 passes the side of the intersection of the first link 21 and the second link 22 in the prone state through the small opening 40A, and the first link 21 and the second link 22 are sandwiched between the front and rear sides of the intersection. It extends deep into the V-shape of the narrow V-shaped space that divides (FIG. 7).

  As shown in FIG. 3, the frame 41 of the pit cover 40 is supported by an upper end portion of a compression spring support 42 erected at the four corners of the bottom portion of the pit 12. When the lifting device 20 positions the lift table 30 above the pit 12, the pit cover 40 is positioned at the opening 12 </ b> A of the pit 12 and closes it as shown in FIGS. 3 and 5. When the lifting device 20 stores the lift table 30 in the pit 12, the pit cover 40 is positioned at the storage position in the pit 12 as shown in FIGS. 4 and 7.

  In this embodiment, the pit cover 40 is interlocked with the lowering operation of the lift table 30 by the elevating device 20 by the operation of the vertical movement device 50 described later, and compresses the spring support 42, while the openings 12A to pit 12 of the pit 12 are compressed. 12 is moved down to the storage position. When the lifting device 20 positions the lift table 30 above the pit 12, the pit cover 40 is moved upward from the contracted position in the pit 12 by the spring force of the compression spring support 42 and is positioned at the opening 12 </ b> A of the pit 12. To close the opening 12A. When the pit cover 40 moves up and down, the pit cover 40 includes a guide roller 43 that rolls along the guide portion 14A provided on the side of the lower limit stopper 14 for the lift table 30 (FIGS. 5 to 7). ). The pit cover 40 includes a hole 44 through which the lower limit stopper 14 for the lift table 30 penetrates when the pit cover 40 moves up and down, and the hole 44 includes an opening / closing lid 45 (FIG. 7). The vertical movement of the pit cover 40 by the vertical movement device 50 will be described later.

According to the present embodiment, the following operational effects can be obtained.
(a) When the lift table 30 is positioned above the pit 12, the pit cover 40 that closes the opening 12 </ b> A of the pit 12 is around the middle portion in the longitudinal direction of the first and second links 21 and 22. The lift table 30 is stored in the pit 12 and is extended to a range where the lift table 30 is sandwiched between the first and second links 21 and 22 in the prone state. In the vehicle lift device 10 that uses only one stage of the lifting device 20 in which the lower ends of the first and second links 21 and 22 constituting the X link mechanism are connected to the bottom side of the pit 12, the lifting device 20 moves up and down. A pit cover 40 can be provided on the pit 12 for the lift table 30 to be used. Moreover, the pit cover 40 is around the middle portion in the longitudinal direction of the first and second links 21 and 22, and the lift table 30 is stored in the pit 12 and is in a prone state. Since it is made to extend in a range sandwiched between 21 and 22, while narrowing the opening width of the small opening 40A through which the first and second links 21 and 22 of the pit cover 40 pass as much as possible, The cover area of the pit cover 40 that closes the opening 12A of the pit 12 can be extended more widely. Work environment and safety are improved.

  (b) The lifting device 20 is installed on the bottom side of the pit 12, and only lifts and lowers the lift table 30, and a small capacity is sufficient.

  (c) The X link mechanism and the hydraulic cylinder 23 constituting the lifting device 20 are installed in the pit 12, and the exposure to the floor surface is reduced and the storage rate in the pit 12 is increased. it can.

  (d) The pit cover 40 is moved downward in conjunction with the lowering operation of the lift table 30 by the elevating device 20, and a drive source for the pit cover 40 is not required separately.

  The pit cover 40 moves up and down between the opening 12A of the pit 12 and the storage position in the pit 12 by an independent drive source for the lifting device 20 of the lift table 30, for example, an air cylinder dedicated to the pit cover 40. It can also be. By moving the pit cover 40 up and down by a drive source independent of the lifting device 20, the vertical movement device 50 of the pit cover 40 provided in the pit 12 can be simplified.

(B) Vertical movement device 50 of pit cover 40 (FIGS. 3 to 8)
As shown in FIGS. 5 to 8, the vertical movement device 50 supports the pit cover 40 by a pedestal 51 made of a toggle link that can be tilted up and down and locked in a standing position. The pedestal 51 is constructed by pin-bonding two folding bars 52 and 53 at a connection point a, and pin-connecting the upper end of the folding bar 52 to the frame 41 of the pit cover 40 at the connection point b. The lower end portion is pin-connected to the mount 13 of the pit 12 at the connection point c. The pedestal 51 is provided with a tension spring constituting the urging means 54 between the spring receiver provided on the frame 41 of the pit cover 40, and provided on the back surface in the tension direction by the urging means 54 of the folding bar 52. The concave portion 52A and the convex portion 53A provided on the back surface with respect to the pulling direction by the biasing means 54 of the folding bar 53 are engaged with each other by the tension force of the biasing means 54 to stand. When the pedestal 51 is in the standing position, the connection point a is positioned on the pulling side of the urging means 54 with respect to the straight line connecting the connection point b and the connection point c, and locks the pedestal 51 made of a toggle link. The vertical movement device 50 closes the opening 12 </ b> A of the pit 12 with the pit cover 40 when the leg pillar 51 stands, and stores the pit cover 40 in the pit 12 when the leg pillar 51 tilts from the above-mentioned standing position.

  The vertical movement device 50 urges the pedestal 51 toward the standing position by the urging means 54 as described above, and the tilting means 55 interlocked with the lowering operation of the lift table 30 to the pit 12 by the elevating device 20. The pedestal 51 is tilted from the above-mentioned standing position against the tensile force of the biasing means 54.

  As shown in FIG. 8, the tilting means 55 includes a release lever 55 that is swingably provided on the frame 41 of the pit cover 40. In this embodiment, the release lever 55 is pin-coupled to the frame 41 at a connection point b for the folding bar 52 of the pedestal 51. The release lever 55 is interlocked with the lowering operation of the lift table 30 to the pit 12 by the lifting device 20. In this embodiment, the release lever 55 is provided with a push pin 55A at a position having a fixed radius from the pin coupling point b to the frame 41, and the push pin 55A is provided in front of the folding bar 52 of the leg column 51 in the standing position. Colliding and positioned at the standby position (FIG. 5). The release lever 55 is pressed by a release roller 56 provided at an intermediate portion of the second link 22 of the lifting device 20 in the process in which the X link mechanism of the lifting portion 20A is vertically contracted, and is given a swinging force. Swing from. The release lever 55 is swung until it hits a swing stopper 57 provided on the frame 41 of the pit cover 40 (FIG. 6). The release lever 55 is a bent bar of the pedestal 51 that is in an upright state against the spring force of the biasing means 54 by the push pin 55A in the process of swinging from the standby position until it hits the swing stopper 57. By pushing 52, a tilting force is applied to the pedestal 51, and the pedestal 51 is tilted (FIG. 6). After the abutment of the pit cover 40 with the swing stopper 57 of the frame 41 of the pit cover 40, the X link mechanism of the elevating part 20A further contracts vertically to position the first link 21 and the second link 22 in the prone state, In the process of storing the lift table 30 in the pit 12, the lift table 30 is further pressed by the release roller 56 of the second link 22 of the lifting device 20. As a result, the release lever 55 applies a pushing force into the pit 12 to the pit 12 via the swing stopper 57 and stores the pit cover 40 in the pit 12 (FIG. 7).

  The vertical movement device 50 supports the pit cover 40 by a total of six pedestals 51 provided at a total of six positions including two positions in the front and rear and two positions in the middle. Each pedestal 51 is connected by a connecting link 58 that is parallel to the pit cover 40. The connecting link 58 is pin-coupled to a connecting point a between the folding bar 52 and the folding bar 53 of each leg 51. Thereby, the folding rods 52 and 53 of each pedestal column 51 form a parallel link mechanism together with the pit cover 40 and the connecting link 58. The folding rods 52 and 53 of each pedestal 51 are moved in parallel with each other.

  As described above, the vehicle lift device 10 has the lower limit stopper 14 of the lift table 30 stored in the pit 12 standing in the pit 12, and when the pedestal 51 tilts from the standing position, The guide roller 43 provided on the lower surface of the pit cover 40 that moves up and down in the opening 12A to the pit 12 is guided by rolling along the guide portion 14A provided on the side of the lower limit stopper 14.

Accordingly, the vertical movement of the pit cover 40 by the vertical movement device 50 is performed as follows.
(1) When the lifting device 20 positions the lift table 30 above the pit 12, the pit cover 40 is supported by the pedestal 51 in the standing position and closes the opening 12A of the pit 12 (FIGS. 3 and 5).

  (2) Since the lifting device 20 stores the lift table 30 in the pit 12, when the X link mechanism of the lifting unit 20A contracts vertically, the release roller 56 of the second link 22 presses the release lever 55 from the standby position. When it is swung, the push pin 55A of the release lever 55 pushes the folding bar 52 of the leg column 51 in the standing position, and tilts the leg column 51 (FIG. 6).

  (3) When the X link mechanism of the elevating part 20A further contracts vertically and the release roller 56 of the second link 22 further swings the release lever 55, the release lever 55 is provided on the frame 41 of the pit cover 40. It abuts against the moving stopper 57. The release lever 55 compresses the compression spring support 42 via the swing stopper 57 and moves the pit cover 40 downward from the opening 12 </ b> A of the pit 12 to push it into the pit 12. After the pit cover 40 slightly moves down from the opening 12A of the pit 12, the lower limit stopper 14 in the pit 12 penetrates the hole 44 of the pit cover 40 and opens the opening / closing lid 45. The pit cover 40 moves the guide roller 43 to the lower limit stopper. It further moves down while being guided by the 14 guide portions 14A. When the first link 21 and the second link 22 of the elevating unit 20A are positioned in the prone state, the lift table 30 is stored in the opening 12A of the pit 12 and the pit cover 40 is stored in the pit 12 (FIG. 4). , FIG. 7).

  (4) When the lifting device 20 raises the lift table 30 from the opening 12A of the pit 12, the pit cover 40 is biased upward by the spring force of the compression spring support 42, and the swing stopper 57 of the pit cover 40 is moved. It moves upward while abutting against the release roller 56 of the second link 22 of the lifting device 20. At this time, the pit cover 40 moves upward while the guide roller 43 is guided by the guide portion 14 </ b> A of the lower limit stopper 14.

  When the lifting device 20 further raises the lift table 30 and the release roller 56 of the second link 22 of the lifting device 20 is separated from the swing stopper 57 of the pit cover 40, the biasing means 54 of the vertical movement device 50 is legged. By pulling the folding bars 52 and 53 of the column 51, the leg column 51 is positioned and locked in the standing position. At this time, the pit cover 40 is positioned at the opening 12A of the pit 12 and supported by the pedestal 51, and closes the opening 12A. The hole 44 of the pit cover 40 is disengaged from the guide portion 14A of the lower limit stopper 14 and is closed by an opening / closing lid 45 to prevent foreign matter from entering the pit 12.

According to the present embodiment, the following operational effects can be obtained.
(a) In the vehicle lift device 10, the lower limit stopper 14 of the lift table 30 stored in the pit 12 is erected in the pit 12, and the opening 12 </ b> A of the pit 12 when the pedestal 51 tilts with respect to the standing position. The pit cover 40 that moves up and down in the pit 12 is guided by the guide portion 14A provided on the lower limit stopper 14. By using the lower limit stopper 14 of the lift table 30 as a guide portion 14A for the pit cover 40, the vertical movement of the pit cover 40 can be stably guided.

  (b) A hole 44 through which the lower limit stopper 14 of the lift table 30 penetrates is provided in the pit cover 40, and an opening / closing lid 45 is provided in the hole 44. While the lower limit stopper 14 is erected at an appropriate position in the pit 12, the lower limit stopper 14 can be passed through the hole 44 of the pit cover 40 to stably guide the vertical movement of the pit cover 40. When the pit cover 40 is in a position to close the opening 12A of the pit 12, the hole 44 is closed with an opening / closing lid 45, and foreign matter can be prevented from falling into the pit 12.

(c) The swingable release lever 55 provided on the pit cover 40 is used as a tilting means 55 for the pedestal 51 that supports the pit cover 40, so that the pedestal 51 tilts and the pit cover 40 enters the pit 12. Push-in can be realized with a compact structure.

  (d) The release lever 55 provided on the pit cover 40 can be easily swung / pushed by the release roller 56 provided on the elevating unit 20A of the elevating device 20.

(e) the pit cover 40 is supported by a plurality of pedestals 51, Kakuashibashira 51 is connected by a connecting link 58 which extends parallel to the pit cover 40, form a parallel link mechanism to each other with the pit cover 40 and the connecting link 58 To do. The pit cover 40 can be stably supported by the plurality of limbs 51 that move in parallel with each other, and the pit cover 40 can be stably moved up and down.

(C) Curtain device 60 (FIGS. 1 and 9 to 15)
As described above, the vehicle lift device 10 is provided with the small opening 40A in the pit cover 40 through which the elevating part 20A (the first link 21 and the second link 22) including the X link mechanism of the elevating device 20 enters and exits. ing. However, as shown in FIG. 1A, the vehicle lift device 10 is provided with a curtain device 60 that surrounds the lifting unit 20 </ b> A of the lifting device 20 between the small opening 40 </ b> A of the pit cover 40 and the lift table 30. The curtain device 60 includes a side curtain device 60A (FIG. 1 (B)) provided along both the left and right sides of the rectangle of the small opening 40A, and a front / rear curtain device 60B (FIG. 1B) provided along both the front and rear sides of the rectangle of the small opening 40A. 1 (C)).

  As shown in FIGS. 9 and 10, the side curtain device 60 </ b> A includes mounting brackets 61 at both ends of a range corresponding to the left and right sides of the small opening 40 </ b> A of the pit cover 40 in the frame 30 </ b> A along the left and right sides of the lift table 30. The curtain winder 62 is pivotally supported between the mounting brackets 61. The tip of a net-like curtain 63 wound resiliently on the curtain winder 62 is connected to an opening frame 41A disposed on the left and right sides of the small opening 40A of the pit cover 40.

  When the lifting device 20 lifts and lowers the lift table 30 with respect to the opening 12A of the pit 12, the curtain 63 of the side curtain device 60A is unwound / wound without delay by the curtain winder 62, and the lift table 30 and the pit cover are unwound. It is stretched along the left and right sides of 40 small openings 40A.

  As shown in FIGS. 11 to 13, the front / rear curtain device 60 </ b> B fixes the mounting bracket 71 to both ends of the opening frame 41 </ b> A along both the front and rear sides of the small opening 40 </ b> A of the pit cover 40, and winds the curtain between the mounting brackets 71. The part 72 is pivotally supported. A suspension made of a flexible material is attached to both ends of an upper edge mounting plate 74 attached to the entire area of the tip (upper edge) of the net-like curtain 73 wound resiliently on the curtain winder 72. At the frame 30A along the left and right sides of the lift table 30 via the sides of the first link 21 and the second link 22 of the lifting portion 20A, the lower end portions of the members 75 are attached. It connects with the position corresponding to the up-and-down both sides of small opening 40A.

  At this time, in the lift device 10 for the vehicle, the lift table 30 of the first link 21 and the second link 22 constituting the X link mechanism of the lift unit 20A during the lift of the lift table 30 by the lift device 20. The expanded region L (FIG. 14) along the front-rear direction on the side exceeds the opening region W along the front-rear direction of the small opening 40A of the pit cover 40 in the front-rear direction.

  As the X link mechanism of the elevating device 20 contracts vertically, the expanded area L along the front-rear direction on the bottom side of the pit 12 of the first link 21 and the second link 22 is within the pit 12 Although exceeding the opening area W of the small opening 40 </ b> A in the front-rear direction, the first link 21 and the second link 22 do not interfere with the curtain 73 of the front / rear curtain device 60 </ b> B outside the pit 12. On the other hand, even if the expanded region L along the front-rear direction on the lift table 30 side of the first link 21 and the second link 22 exceeds the opening width W of the small opening 40A of the pit cover 40 in the front-rear direction, these The first link 21 and the second link 22 are between the suspension members 75, 75 of the front / rear curtain device 60B, and the tip (upper edge) of the curtain 73 is the lower surface of the main table 31 of the lift table 30. It moves in the link movement space 76 formed with respect to, and does not interfere with the curtain 73. That is, in the front / rear curtain device 60B, the length of the suspension member 75 to suspend the curtain 73 from the lower surface of the lift table 30 (main table 31) is longer in the front-rear direction than the opening area W of the small opening 40A of the pit cover 40. The first link 21 and the second link 22 that are expanded to the maximum are set to a length that does not interfere (contact) the curtain 73.

  As shown in FIGS. 3 to 15, the front and rear curtain device 60 </ b> B is provided at the center of the upper edge mounting plate 74 of the curtain 73 on the descending end side where the lifting device 20 stores the lift table 30 in the opening 12 </ b> A of the pit 12. The downward hook 77 can be hooked on an upward hook receiver 78 provided at the center of the opening frame 41A along the front and rear sides of the small opening 40A of the pit cover 40.

  When the lifting device 20 stores the lift table 30 in the opening 12A of the pit 12, the front / rear curtain device 60B winds the curtain 73 stretched along both the front and rear sides of the lift table 30 and the small opening 40A of the pit cover 40. Winding is performed by the take-up portion 72 (FIGS. 14A and 14B). After all the curtains 73 have been wound around the curtain winder 72, the downward hooks 77 of the upper edge of the curtain 73 are hooked on the upward hook receivers 78 of the small openings 40A of the pit cover 40. Thereafter, the suspension member 75 that starts to sag between the curtain winder 72 and the lift table 30 is placed between the lift table 30 and the pit cover 40, and the suspension member 75 enters the pit 12 from the small opening 40 </ b> A of the pit cover 40. It hangs down (FIGS. 14C and 15).

  When the lifting device 20 raises the lift table 30 from the opening 12A of the pit 12, the front / rear curtain device 60B is a hanging member 75 (see FIG. 14) that is slackened between the lift table 30 and the upper end portion of the curtain winding unit 72. C), FIG. 15) is pulled up as the lift table 30 is raised. The curtain 73 is unwound from the curtain winder 72 through the suspension member 75 that is tensioned by the lift of the lift table 30 (FIG. 14B). As a result, the curtain 73 is stretched along both the front and rear sides of the lift table 30 and the small opening 40A of the pit cover 40 (FIG. 14A).

According to the present embodiment, the following operational effects can be obtained.
(a) In the vehicle lift device 10, a curtain device 60 (60 </ b> A, 60 </ b> B) surrounding the lifting unit 20 </ b> A of the lifting device 20 is provided between the opening 12 </ b> A of the pit 12 and the lift table 30. When the lift table 30 is positioned above the pit 12, the curtain device 60 (60 </ b> A, 60 </ b> B) surrounds the opening 12 </ b> A of the pit 12 and the lifting / lowering portion 20 </ b> A of the lifting device 20 with respect to the outside world. While preventing fall, 20 A of raising / lowering parts of the raising / lowering apparatus 20 are protected.

  (b) In the vehicle lift device 10, the curtain device 60 (60 </ b> A, 60 </ b> B) surrounding the lifting unit 20 </ b> A of the lifting device 20 is provided between the small opening 40 </ b> A of the pit cover 40 and the lift table 30. When the lift table 30 is positioned above the pit 12, the curtain device 60 (60 </ b> A, 60 </ b> B) surrounds the small opening 40 </ b> A of the pit cover 40 and the lifting unit 20 </ b> A of the lifting device 20 with respect to the outside world. While preventing the fall of the foreign material from 40A to the inside of the pit 12, the elevating part 20A of the elevating device 20 is protected.

  (c) The curtain device 60 (60A, 60B) has curtain winding portions 62 and 72 for winding the curtain. When the lift table 30 moves up and down with respect to the pit 12, the curtain of the curtain device 60 (60 </ b> A, 60 </ b> B) is unwound / wound by the curtain winder 62, 72 without delay, and the opening 12 </ b> A of the pit 12 or the pit cover. The 40 small openings 40A and the lifting unit 20A of the lifting device 20 are surrounded without slack.

  (d) The elevating part 20A of the elevating device 20 includes an X link mechanism in which the first and second links 21 and 22 are connected in an X shape, and the first and second links 21, When the expanded area L along the front-rear direction on the lift table 30 side of 22 exceeds the opening area W along the front-rear direction of the small opening 40A of the pit cover 40 in the front-rear direction, the curtain device 60B) The lifting member 30 is provided on the side of the first and second links 21 and 22 with the suspension member 75 provided at the tip of the curtain 73 wound around the curtain winding portion 72 provided on the opening edge side of the opening 40A. Connect to the side. The upper edge portion of the curtain 72 of the curtain device 60B does not interfere with the first and second links 21 and 22 that expand in the front-rear direction with respect to the opening area W of the small opening 40A of the pit cover 40. The edge portion can be connected to the opening edge side of the narrow small opening 40 </ b> A of the pit cover 40. The opening width of the small opening 40A of the pit cover 40 surrounded by the curtain 73 can be reduced.

  (e) On the lower end side of the lift table 30, hooks 77 provided on the upper edge of the curtain 73 are hooked on hook receivers 78 provided on the pit cover 40 side. The curtain winding part 72 provided with the lower edge part of the curtain 73 on the side of the pit cover 40 while the suspension member 75 provided on the upper edge part of the curtain 73 is simply stored between the lift table 30 and the pit cover 40. Can be rolled up.

  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, the elevating part of the elevating device is not limited to an X link mechanism, but may be a piston rod of a cylinder embedded in a pit.

1A and 1B show a lift device for a vehicle, FIG. 1A is a perspective view equipped with a curtain device, FIG. 1B is a perspective view with a front and rear curtain device removed, and FIG. 1C is a perspective view with a side curtain device removed. 2A and 2B show a lift device for a vehicle, in which FIG. 2A is a perspective view in which a curtain device is omitted, and FIG. 2B is a perspective view in which a pit cover is omitted. FIG. 3 is a perspective view in which the lift table of the vehicle lift device is raised. FIG. 4 is a perspective view in which a lift table of a vehicle lift device is stored. FIG. 5 is a side view of the lift table of the vehicle lift device raised. FIG. 6 is a side view in which the lift table of the vehicle lift device is lowered. FIG. 7 shows a state in which the lift table of the vehicle lift device is stored, (A) is a side view, and (B) is a schematic sectional view. FIG. 8 shows a pedestal made of a toggle link, (A) is a side view showing a standing state, (B) is a side view showing a tilted state, and (C) is a side view showing a folded state. FIG. 9 is a side view showing a side curtain device of the curtain device. FIG. 10 is a front view showing a side curtain device of the curtain device. FIG. 11 is a side view showing the front and rear curtain device of the curtain device. FIG. 12 is a front view showing the front and rear curtain device of the curtain device. FIG. 13 is a perspective view showing a front and rear curtain device of the curtain device. FIG. 14 shows a curtain device of a vehicle lift device, (A) is a side view showing the curtain device when the lift table is raised, and (B) is a side view showing the curtain device when the lift table is lowered. (C) is a side view showing a curtain device when the lift table is stored. FIG. 15 is a side view showing a hook of the curtain device.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Vehicle lift apparatus 12 Pit 12A Opening 14 Lower limit stopper 14A Guide part 20 Lifting apparatus 30 Lift table 40 Pit cover 44 Hole 45 Opening / closing cover 50 Vertical movement apparatus 51 Leg pillar 54 Energizing means 55 Release lever (tilting means)
56 Release roller 57 Oscillating stopper 58 Link

Claims (5)

In a vehicle lift device having a pit cover that allows a lift table that is lifted and lowered by a lifting device to be stored in a pit and closes the opening of the pit when the lift table is positioned above the pit,
The pit cover can be raised and lowered and supported by a pedestal made of a toggle link that locks in the standing position. When the pedestal stands, the pit cover is closed by the pit cover, and when the pedestal tilts, the pit cover is stored in the pit. And
The pedestal is urged toward the standing position by the urging means, and the pedestal is opposed to the urging action of the urging means by the tilting means interlocking with the lowering operation of the lift table to the pit by the lifting device. Tilt from the standing position,
The lower limit stopper of the lift table stored in the pit is erected in the pit, and the pit cover that moves up and down in the pit opening when the pedestal tilts with respect to the standing position is provided in the above lower limit stopper A vehicle lift device characterized by being guided by a section.   The vehicle lift device according to claim 1, wherein a hole through which a lower limit stopper of the lift table penetrates is provided in the pit cover, and the opening / closing lid is provided in the hole. The tilting means is composed of a release lever provided swingably on the pit cover,
The release lever swings from the standby position until it hits the swing stopper provided on the pit cover in conjunction with the downward movement of the lift table to the pit, and in the process of swinging, it applies tilting force to the pedestal. 3. The vehicle according to claim 1, wherein the pedestal is tilted and the pit cover is accommodated in the pit by applying a pushing force into the pit after the collision with the swing stopper. Lift device.   The lift device for a vehicle according to claim 3, wherein the release lever provided on the pit cover is given a swinging force from a release roller provided on a lifting portion of the lifting device.   The pit cover is supported by a plurality of pedestals, each pedestal is connected by a connecting link that is parallel to the pit cover, and forms a parallel link mechanism together with the pit cover and the connecting link. The lift apparatus for vehicles as described in.

Images