JP3728003B2 - Car lift equipment - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an automobile lift device, and in particular, when carrying out maintenance work such as inspection and maintenance of automobiles, a pair of left and right support plates for supporting a vehicle (passenger car system) with a relatively flat underbody, and an underfloor The present invention relates to a lift device for a vehicle including a support rod or a horizontal swing arm for supporting a vehicle (truck system) having an uneven frame.
[0002]
[Prior art]
Conventionally, this type of lift device for an automobile uses the advantage when a vehicle such as a light car or a general passenger car can be easily supported by a pair of left and right support plates, while the right and left of a wagon car, a small truck, etc. When the vehicle cannot be easily supported by a pair of support plates, it is configured so that it can be supported by a horizontal swing arm. The pair of left and right support plates as a vehicle cradle can be inserted and removed when the lift device is not used. It is possible to increase the support rigidity of the swing arm by allowing the support plate to receive the load of the vehicle applied to the swing arm when the vehicle is supported by the horizontal swing arm. It is said.
[0003]
Therefore, in order to solve such problems of the invention, an example is disclosed in Japanese Utility Model Publication No. 1-9835.
[0004]
The autolift disclosed in this publication includes a pair of left and right plates that are moved up and down by a lift driving device, and a swinging body that is swingably supported on the outer side of a substantially central portion of the plate and protrudes from the upper surface of the plate. And a pair of swing arms that are abutted and supported on the plate by the swinging of the swinging body and can be lifted from the plate via the spring member.
[0005]
However, in the above configuration, when the vehicle is supported by the swing arm, the load of the vehicle applied to the swing arm can be received by the support plate and the support rigidity of the swing arm can be increased. Since the pair of swing arms always protrudes from the upper surface of the plate, the pair of left and right swing arms protrude from the floor surface at least when the auto lift is not used. However, there was a problem that sometimes it interfered with the loading and unloading of vehicles and maintenance work. The swing arm interferes with the tire especially when the maintenance bay is narrow and you want to switch the handle (tire) near the position of the support plate of the lift device, or if you want to pass the support plate or the floor in a slightly diagonal direction. Therefore, it is not easy to enter and exit from the lift device.
[0006]
[Problems to be solved by the invention]
SUMMARY OF THE INVENTION In view of the drawbacks of the prior art, the first object of the present invention is to prevent the vehicle cradle from interfering with the loading and unloading of the vehicle and maintenance work when the lift device is not used. The second object is to improve the working efficiency by automatically moving the swing arm up and down when setting the vehicle on the swing arm. The third purpose is based on the first and second purposes, and when the vehicle is supported by the swing arm, the support plate can receive the load of the vehicle applied to the swing arm, and the support rigidity of the swing arm can be increased. It is.
[0007]
[Means for Solving the Problems]
A lift device for an automobile of the present invention includes a pair of left and right support plates that are moved up and down by a main operating rod of a support plate cylinder, a pair of left and right guide members having a mounting base plate fixed to an outer wall of a substantially central portion of the support plate, A movable pivot base that is slidably guided by the guide member and can position a plurality of swing arms on substantially the same plane as the floor surface, the drive source is attached to the mounting base plate, The projecting upper end portion of the operating rod of the drive source includes a movable pivot support lifting / lowering drive device attached to the movable pivot support.
[0008]
Further, in the above structure, a spring member is provided between the lower surface of the base portion of the swing arm and the inner surface of the lower pivot plate of the movable pivot table.
[0009]
By the way, as a drive source of the elevating drive device, a hydraulic or pneumatic drive cylinder, a drive motor in which the operating rod is mechanically rotated, an electromagnetic motor in which the operating rod moves up and down in a solenoid manner, and the like are selectively used.
[0010]
In addition to the sliding engagement between one vertical slide plate and a pair of guide pieces, the guide support relationship between the movable pivot support on the movable side and the guide member on the fixed side is as follows. The fitting relationship with the cylinder is adopted.
[0011]
DETAILED DESCRIPTION OF THE INVENTION
In the following, the embodiment of the present invention shown in the drawings is applied to a floor of a maintenance shop that performs maintenance work such as inspection and maintenance of an automobile, an autolift cradle (support) The description will focus on the relationship with the plate and swing arm.
[0012]
1 to 9, X is a first embodiment of an automobile lift device X to which the present invention is applied. The lift device X is an example of an embedded autolift having lifting / lowering drive means such as a synchronous shaft and a drive cylinder (not shown) in a pit.
[0013]
That is, 1 is a pit formed on the floor surface F, and this pit 1 is formed in a concave shape when viewed from the plane as shown in FIG. Reference numeral 2 denotes a pit cover plate. The pit cover plate 2 is appropriately provided in a central opening that communicates with the left and right rectangular openings with reference to FIG. The pit cover plate 2 is located on the same plane with respect to the floor surface F.
[0014]
Reference numeral 3 denotes support plate cylinders provided in the left and right rectangular openings of the pit 1 in the vertical direction. Hereinafter, the left and right support plate cylinders 3 and 3, their main operating rods 4 and 4, the support plates 5 and 5, the swing arm 6, and the like are the same on the left and right, so only the members on one side will be described for convenience and the same on the other side The description which attaches a code | symbol and overlaps is abbreviate | omitted.
[0015]
First, as the support plate cylinder 3, a hydraulic cylinder is generally used, and is arranged on the left and right. The ram as the main operating rod 4 is expanded and contracted in the vertical direction by the pressure medium in the hydraulic cylinder 3. The long plate-like support plate 5 is a horizontal board or plate fixed to the upper end portion of the main operating rod 4 and is moved up and down by the main operating rod 4. The support plate 5 is used when supporting a vehicle such as a light vehicle or a general passenger car. When the support plate 5 is not used, the support plate 5 is located on the same plane as the floor surface F or the pit cover plate 2. That is, the support plate 5 does not protrude from the floor surface F.
[0016]
Next, 6 is a swing arm pivotally supported by the movable pivot support 7 via a pivot 8 so as to be rotatable in the horizontal direction. As shown in FIG. 1, four swing arms 6 are provided on the movable pivot support 7 such that there are two front and rear on the left side and two front and rear on the right side. The left and right swing arms 6 can be opposed to each other by manual operation. It is. Further, the swing arm 6 has a vehicle body receiving arm 9, and the vehicle body receiving arm 9 is fitted and inserted on the distal end side of the swing arm 6 so as to be extendable and contractible. The expansion and contraction of the swing arm 6 is performed manually by a maintenance worker. Then, a height-adjustable receiver 10 is screwed to the tip of the vehicle body receiving arm 9.
[0017]
By the way, the movable pivot support 7 is configured to pivotally support the base portions of the two front and rear swing arms 6 and can be moved up and down by a guide member 20 fixed to the outer wall of the substantially central portion of the support plate 5. It is supported by.
[0018]
That is, as shown in FIGS. 4 and 5, reference numeral 11 denotes a vertical slide plate, and protrusion-like engaging portions 11 a are formed on the left and right side wall portions of the vertical slide plate 11. Reference numeral 12 denotes upper and lower swing arm pivot plates horizontally provided at the upper and center portions of the outer wall surface of the vertical slide plate. These pivot plates 12 have a first pivot hole 12a for the pivot shaft 8. Is formed. The upper pivot plate 12 is deeper (width) than the lower pivot plate, and the lower surface thereof can abut on the upper end surface of a guide piece 23 of the guide member 20 described later.
[0019]
Reference numeral 13 denotes a pair of left and right connecting plates provided in the vertical direction with a required interval so as to intersect the vertical slide plate 11 and the pivoting support plate 12, respectively. There is provided a working plate 14 for operating rods. Reference numeral 15 denotes a stopper plate that regulates the opening / closing angle when the front and rear swing arms are opened approximately 180 degrees in a horizontal state.
[0020]
The fixed-side guide member 20 is formed in a T-shape in this embodiment. As shown in FIG. 4, reference numeral 21 denotes a mounting base plate fixed to the outer wall of the substantially central portion of the support plate 5 via a plurality of fixing tools 22. A pair of left and right end face U-shaped guide pieces 23 are fixed to the outer wall surface in the vertical direction. The engaging portion 11 a of the vertical slide plate 11 of the movable support 7 described above is slidably engaged with these guide pieces 23. A pair of left and right driver support plates 24 project outwardly from the outer wall surface of the lower narrow portion of the mounting base plate 21. Reference numeral 25 denotes a through hole for the fixing tool 22 formed in the attachment base plate 21, and 26 denotes a pivot support hole for the pivot pin 32 formed in the support plate 24 for the driving body.
[0021]
Next, reference numeral 30 denotes a drive source or lift drive device that moves the movable pivot support 7 having the swing arm 6 up and down with reference to the upper surface 5a of the support plate 5 as a reference (reference) as shown in FIG. In this embodiment, a relatively small air cylinder is used as the lifting drive. In other words, 31 is an air cylinder, and the lower end portion of the air cylinder 31 is pivotally supported on the driving body support plate 24 of the mounting base plate 21 via the lower pivot pin 32. On the other hand, 33 is an operating rod of an air cylinder, and the protruding upper end portion of the operating rod 33 is pivotally supported on the working rod support plate 14 of the movable support 7 via an upper pivot pin 34.
[0022]
In the above configuration, when a vehicle such as a light vehicle or a general passenger car can be easily supported by the pair of left and right support plates 5, the four swing arms 6 are manually positioned at the solid line shown in FIG. In addition, as shown in FIG. 9, the swing arm 6 and the movable pivot support 7 are made substantially flush with the upper surface 5 a of the support plate 5. In this case, the four swing arms 6 are opened linearly along the outer wall of the support plate 5, and the operating rod 33 of the elevating drive device 30 is contracted so that it does not protrude from the floor surface F. Therefore, even if the vehicle gets into the support plate 5 from a slightly oblique direction, the swing arm 6 does not get in the way at all. Therefore, when the vehicle gets on the left and right support plates, when the support plate cylinder 3 is driven, the main operating rod 4 in the pit expands and rises together with the support plate 5 to a desired position. Thus, when the vehicle can be easily set only by the left and right support plates 5, the advantage is utilized and the four swig arms 6 are not used.
[0023]
On the other hand, when the vehicle cannot be easily supported by the pair of left and right support plates 5 such as a wagon car or a small truck, the swing arm 6 is used.
[0024]
Thus, when the swing arm 6 is used, the lifting drive device 30 is first driven to extend the operating rod 33. Next, the four swing arms 6 are manually rotated to the position of the phantom line shown in FIG. 1, and the length of the vehicle body receiving arm 9 is adjusted.
[0025]
By the way, in this embodiment, when the elevating drive device 30 is driven, the operating rod 33 is extended and the movable pivot 7 is raised. As a result, as shown in FIG. 2, a gap a of about several millimeters is generated between the lower surface of the front and rear swing arms 6 and the upper surface 5a of the support plate 5. Therefore, the swing arm 6 can be manually and smoothly rotated to a desired angle. However, the main operating rod 4 is extended after the setting of the swing arm 6 is completed, and the load of the vehicle V is transferred via the receiver 10. When applied to the swing arm 6, the operating rod 33 of the air cylinder 31 contracts somewhat, and the four swing arms 6 come into contact with the upper surface 5 a of the support plate 5. Therefore, the swing arm 6 is supported by the upper surface 5a of the support plate 5 or the upper and lower pivot plates 12 when loaded depending on the state of the pressure medium in the air cylinder 31.
[0026]
When the inspection / maintenance of the vehicle V is completed and the main operating rod 4 is contracted, the support plate 5 is lowered to the same horizontal plane as the floor surface F. Therefore, the four swing arms 6 are manually returned to the solid line shown in FIG. At this time, the four swing arms 6 still protrude from the floor surface or the support plate 5 because the operating rod 33 of the elevating drive device 30 remains in the extended state. Therefore, the lifting drive device 30 is driven to contract the operating rod 33. As a result, the swing arm 6 and the movable pivot base 7 are substantially flush with the upper surface 5 a of the support plate 5. Therefore, even if the vehicle V exits in a slightly oblique direction with respect to the support plate 5, the swing arm 6 does not get in the way. When the movable pivot support 7 is substantially flush with the upper surface 5a of the support plate 5, in this embodiment, the lower surface of the upper pivot support plate 12 is in contact with the upper end surface of the guide piece 23 of the guide member 20. Yes.
[0027]
【Example】
First, in the first example described in the embodiment of the invention, a relatively small air cylinder 31 is used as an example of the elevating drive device 30, and the inner diameter of the air cylinder 31 is 70 to 80 mm. It is. A hydraulic cylinder may be employed instead of the air cylinder 31. The upper pivot plate 12 is deeper (width) than the lower pivot plate, and its lower surface can be in contact with the upper end surface of a guide piece 23 of the guide member 20 described later. The end portion may protrude from the vertical slide plate 11, and the protruding lower end surface may be brought into contact with the upper end surface of the mounting base plate 21 of the guide member 20.
[0028]
Further, as shown in FIG. 10, in order to increase the support rigidity of the swing arm 6A, a spring member 40 is interposed between the lower surface of the base of the swing arm 6A and the inner surface of the lower pivot plate 12 of the movable pivot base 7A. Also good. In this case, although the spring member 40 is wound around the pivot 8A, a notch 41 through a notch are formed on the lower surface of the base of the swing arm 6A, and the upper end of the spring member 40 is accommodated in the notch 41. Is desirable.
[0029]
As another example of the lift drive device 30B as shown in FIG. 11, the movable pivot base 7B is moved up and down by a drive motor 31B and a vertical operating screw 33B that is rotated by the driving force of the drive motor 31B. You may let them. In this case, a long cylindrical female screw portion 45 that is screwed with the operating rod 33B is provided in the vertical direction below the central portion of the upper pivot plate 12 of the movable pivot base 7B. As described above, in order to increase the support rigidity of the swing arm 6B, the spring member 40B is provided between the lower surface of the base of the swing arm 6B and the inner surface of the lower pivot plate 12 of the movable pivot base 7B. .
[0030]
Next, FIGS. 12 to 16 show another embodiment of the lift device for automobiles. In the description of these embodiments, the same parts as those in the first embodiment of the present invention are denoted by the same reference numerals, and redundant description is omitted.
[0031]
In the second embodiment of the lift device X1 shown in FIGS. 12 to 14, the main difference from the first embodiment is that the sliding relationship between the movable pivot base 7C on the movable side and the guide member 20C on the fixed side. It is. That is, the movable pivot support 7 of the first embodiment is provided with a single vertical slide plate 11, and this vertical slide plate is guided and supported by the mounting base plate 21 of the guide member 20. The second embodiment A pair of guide shafts 50, 50 are suspended from the lower pivot plate 12 of the movable pivot base 7C with a required interval, while the guide shafts 50, 50 are mounted on the mounting base plate 21C of the guide member 20C. A pair of guide cylinders 51, 51 for guiding are fixedly provided. In addition, 6C is a swing arm, 30C is a raising / lowering drive apparatus for movable pivots. In the second embodiment, the lower pivot plate 12 of the movable pivot platform 7C is different from that of the pair of guide cylinders 51, 51 in that it is substantially the same as the first embodiment. There are effects.
[0032]
In the third embodiment of the lift device X2 shown in FIGS. 15 and 16, the main difference from the first embodiment is the lifting means 60 of the support plate 5D. Although this lifting means 60 is not the main part of the present invention, it will be described for convenience in consideration of the case where the main part of the present invention is implemented in different embodiments of the lifting means 60. The driving means for the support plate of the elevating means is not embedded vertically in the pit but is incorporated in a link mechanism constituting the elevating means 60. The lifting / lowering means 60 basically includes a link mechanism 61 having a plurality of arms and a support plate driving means 62 appropriately incorporated in the link mechanism.
[0033]
The link mechanism 61 mainly comprises a long arm 63, a short arm 64, and a balanced link rod 65. On the other hand, the support plate driving means 62 is mainly composed of an elevating cylinder 3D provided on the short arm side, and a main operating rod 4D whose protruding upper end is pivotally supported on the horizontal shaft 66 on the long arm side.
[0034]
Thus, the long arm 63 is formed in a generally S-shape as a whole, and its upper end is pivotally attached to the support plate 5D via a pivot shaft 67, while its lower end is pit 1D via a wheel 68. It moves on the laying rail 69 inside. The short arm 64 is approximately half the length of the long arm 63, and its upper end is pivotally supported by a substantially central portion of the long arm via a central shaft 75, while the lower end is fixed in a horizontal direction. It is pivotally supported by the synchronous shaft 70 on the side. Further, the balanced link rod 65 is set in consideration of the length of one end (upper end) side of the long arm 63, and the upper end of the balanced link rod 65 is adjusted and screwed to the support plate 5D via the upper horizontal shaft 71. On the other hand, the lower end portion is integrally provided on a hand bearing portion 74 that is pivotally supported via a lower horizontal shaft 73 at a portion near the center portion of the long arm 63.
[0035]
By the way, reference numeral 75 is a central shaft that pivotally supports the central portion of the long arm 63 and the upper end portion of the short arm 64, 76 is a polygonal plate cam provided on the central shaft 75, and 77 is a plate cam on one end side. The other end is a triangular link plate that is pivotally supported by a portion near the upper end of the short arm 64 via a projection shaft 79. The cam roller 78 is pivotally supported by the long arm 63.
[0036]
The elevating cylinder 3D is incorporated in a well-known anti-sliding lock tooth member 80 formed in a bowl shape, and its lower end is appropriately pivoted on the synchronization shaft 70 side. The plate cam 76, the link plate 77, the anti-sliding locking tooth member 80, and the like are not essential parts of the present invention in relation to the claims, and thus detailed description thereof is omitted.
[0037]
In the above configuration, when the support plate 5D is lifted from the floor surface F as shown in FIG. 15, the lift cylinder 3D and the main operating rod 4D rise in a tilted state in the same manner as the long arm 63 and the short arm 64. On the other hand, as shown in FIG. 16, when the support plate 5D is lowered to be substantially the same as the floor surface F (including the case where it slightly protrudes), the link mechanism 61 and the support plate driving means 62 are accommodated in the pit 1D or To position.
[0038]
【The invention's effect】
As is clear from the above description, the present invention has the following effects.
(1) When the lift device is not used, the vehicle cradle does not interfere with the loading and unloading of the vehicle and maintenance work.
(2) When setting the vehicle on the swing arm, the swing arm can be automatically moved up and down to improve the work efficiency.
(3) Since the number of component parts is reduced as much as possible, it can be manufactured at low cost.
(4) In the invention according to claim 2 or claim 4, the load of the vehicle applied to the swing arm is received by the support plate, and the support rigidity of the swing arm can be increased.
[Brief description of the drawings]
1 to 9 are explanatory views showing a first embodiment of the present invention, FIG. 10 is an explanatory view of an embodiment in which main parts of the first embodiment are shared, and FIG. 11 is a modified example of the first embodiment. FIGS. 12 to 14 are explanatory diagrams showing a second embodiment of the present invention, and FIGS. 15 and 16 are explanatory diagrams showing a third embodiment of the present invention.
FIG. 1 is an explanatory diagram from a plane showing an example of an embodiment of the present invention.
FIG. 2 is an explanatory view in which the floor surface is a longitudinal section and the main part is viewed in the horizontal direction from the pit.
FIG. 3 is a perspective view of a main part (showing the movement of a movable pivot support and a swing arm).
FIG. 4 is an exploded perspective view of a main part.
FIG. 5 is an explanatory view of a main part viewed from one side.
FIG. 6 is an explanatory view showing a main part from a plane.
FIG. 7 is an explanatory view from the right side surface when FIG. 5 or FIG. 6 is used as a reference.
8 is a schematic cross-sectional explanatory diagram based on line 8-8 in FIG.
FIG. 9 is an explanatory view showing the movement of the movable pivot support.
FIG. 10 is an explanatory diagram of an embodiment in which main parts of the first embodiment are shared.
FIG. 11 is an explanatory view showing a modification of the lifting drive device of the first embodiment.
FIG. 12 is a perspective view showing a main part of a second embodiment.
FIG. 13 is an exploded perspective view showing the main part of the second embodiment.
FIG. 14 is an explanatory view of the main part of the second embodiment as viewed from one side.
FIG. 15 is an explanatory diagram of a main part of the third embodiment (when the support plate is raised).
FIG. 16 is an explanatory diagram of a main part of the third embodiment (when the support plate is lowered).
[Explanation of symbols]
X, X1, X2 ... lift device, F ... floor surface, 1D ... pit, 3 ... support plate cylinder, 3D ... lifting cylinder, 4, 4D ... main operating rod 5, 5D ... support plate, 5a ... top surface , 6, 6A, 6B ... swing arm, 7, 7A, 7B, 7C ... movable pivot support, 8, 8A ... pivot, 9 ... vehicle body receiving arm, 11 ... vertical slide plate, 12 ... upper and lower pivot plate, 20 , 20C: guide member, 21, 21C: mounting base plate, 23: guide piece, 24: support plate, 30, 30C ... elevating drive device, 31 ... air cylinder, 31B ... drive motor, 33 ... operating rod, 33B ... Vertically operating screw, 40, 40B ... Spring member, 45 ... Female thread portion, 50 ... Guide shaft, 51 ... Guide cylinder, a ... Gap, V ... Vehicle, 60 ... Lifting means, 61 ... Link mechanism, 62 ... Drive for support plate means.

Claims (6)

A pair of left and right support plates 5 that are moved up and down by a main operating rod 4 of the support plate cylinder 3, a pair of left and right guide members 20 having a mounting base plate 21 fixed to the outer wall of a substantially central portion of the support plate, and sliding to the guide members. A movable pivot base 7 which is supported and supported in a possible manner, pivotally supports the bases of a plurality of swing arms 6, and positions these swing arms on the floor or substantially the same plane as the support plate, a drive source 31 is mounted on the mounting base plate 21, while the projecting upper end of the operating rod 33 of the drive source 31 has a movable pivot support lifting / lowering drive device 30 mounted on the movable pivot base 7. apparatus. 2. The lift apparatus for an automobile according to claim 1, wherein a spring member 40 is provided between the lower surface of the base portion of the swing arm 6A and the inner surface of the lower pivot plate 12 of the movable pivot table 7A. A pair of left and right support plates 5 that are moved up and down by a main operating rod 4 of the support plate cylinder 3, a pair of left and right guide members 20 having a mounting base plate 21 fixed to the outer wall of a substantially central portion of the support plate, and sliding to the guide members. The movable pivot base 7B and the drive source 31B are supported and guided so as to be pivotable, and pivotally support a plurality of swing arms 6B, and these swing arms are positioned on substantially the same plane as the floor or support plate. On the other hand, the protruding end portion of the vertical operating screw 33B of the drive source 31B is attached to the attachment base plate 21, and the movable pivot base lifting drive device 30B is screwed with the female screw portion 45 provided on the movable pivot base 7B. A lift device for automobiles comprising: 4. The lift device for an automobile according to claim 3, wherein a spring member 40B is provided between the lower surface of the base portion of the swing arm 6B and the inner surface of the lower pivot plate 12 of the movable pivot base 7B. A pair of left and right support plates 5 that are moved up and down by the main operating rod 4 of the support plate cylinder 3, a pair of left and right guide members 20C having a mounting base plate 21C fixed to the outer wall of the substantially central portion of the support plate, and slide to the guide members. A movable pivot base 7C, which is supported and supported as much as possible, pivotally supports the bases of the plurality of swing arms 6C, and positions these swing arms on the floor surface or substantially the same plane as the support plate. 31 is attached to the mounting base plate 21C, while the projecting upper end of the operating rod 33 of the drive source 31 is provided with a movable pivot base lifting drive device 30C attached to the movable pivot base 7C. A pair of guide shafts 50, 50 are vertically suspended from the lower pivot plate 12 of the pivot table 7C with a required interval, while the guide base plate 21C of the guide member 20C is provided with the guide shaft. Automotive lift device in which a pair of guide tube 51 for guiding the shift 50 and 50, characterized in that fixedly provided. 6. The movable pivot support 7C according to claim 5, wherein the movable pivot support 7C is supported by a pair of guide cylinders 51 and 51 when the movable pivot support 7C is positioned on substantially the same plane as the floor or the support plate. Lift device for automobiles.

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