JP2896456B2 - Underfloor lift system - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lift device buried under the floor, which is useful for inspection and maintenance of vehicles and the like.

[0002]

2. Description of the Related Art Such a lift device buried under the floor is:
Because it can be stored under the floor when not in use,
Various types of structures have been proposed, which do not hinder and are easy to use.

[0003]

However, this type of conventional lift device has been improved in that its structure is complicated and that smooth operation, safety, and maintainability are insufficient. There was room to be.

SUMMARY OF THE INVENTION The present invention has been made in view of such a conventional situation, and an object of the present invention is to provide a buried underfloor lift device having a simple structure, smooth operation, improved safety, improved maintainability, and the like. It is.

[0005]

According to the first aspect of the present invention, there is provided a base frame member ( 3 ) housed in a pit ( 1) formed on a floor surface ( 2 ) so as to be able to move up and down.
3 and the driving unit 4 for vertically moving a lift member 5, 5 erected on left and right sides of at least the base frame member 3,
The lift members 5, 5 are guide members 6 , 6 installed on the floor 2 to be inserted and guided so as to be able to move up and down, and the lower ends of the lift members 5, 5 and the base member
Fitting having fitting groove 30a between left and right ends of frame member 3
A mating portion 30 and a fitting shaft 31 to which the fitting portion 30 is fitted.
The lift members 5, 5
An underfloor buried lift device characterized in that it is detachably fitted so as to fall down from above .

The present invention according to claim 2 is provided on the floor 2.
Frame that can be lifted and lowered in the pit 1
A member 3 and a drive for vertically moving the base frame member 3
Moving part 4 and at least left and right of base frame member 3
Lift members 5 and 5 erected on the vehicle, and both lift members
5 and 5 are inserted into the floor 2 so as to be vertically movable and guided.
The guide members 6 and 6
Lower ends of the shaft members 5, 5 and the left side of the base frame member 3.
A fitting portion 30 having a fitting groove 30a between right ends thereof;
Swingable consisting of a fitting shaft 31 into which the fitting portion 30 is fitted
Structure, the lift members 5, 5 fall from above
The driving unit 4 is detachably fitted in the form
A hydraulic cylinder 20 erected on the bottom 1a of the pit 1;
Mounted on the drive rod 20a of the hydraulic cylinder 20
A guide portion 21 composed of a pulley or the like and one end of the
And the other end is connected to the drive lock.
Through a guide portion 21 of the door 20a.
Etc. it from the base frame member 3 side to the solid deposition has been Chen
And a cable body 22 for power transmission .

[0007] The present invention according to claim 3 is provided on the floor 2.
Frame that can be lifted and lowered in the pit 1
A member 3 and a drive for vertically moving the base frame member 3
Moving part 4 and at least left and right of base frame member 3
Lift members 5 and 5 erected on the vehicle, and both lift members
5 and 5 are inserted into the floor 2 so as to be vertically movable and guided.
With the guide members 6 and 6 installed,
And the left and right sides of the base frame member 3
Fitting portion 30 having a fitting groove 30a between its ends,
Swingable structure comprising a fitting shaft 31 into which the portion 30 is fitted.
And the lift members 5, 5 fall from above.
The drive unit 4 is detachably fitted with the
A hydraulic cylinder 20 erected on the bottom 1a of the
A slide mounted on the drive rod 20a of the hydraulic cylinder 20
A guide portion 21 composed of a car or the like, and one end of which is the hydraulic cylinder
And the other end of the drive rod
Through the guide portion 21 of 20a, the base is formed into a substantially inverted U-shape.
Consisting of a chain fixed to the base frame member 3
A power transmission cable body 22;
The material 6 has a plurality of grooves 40a-
d, and one of the grease reservoirs is filled with grease 41.
The grease reservoir has upper and lower grooves to prevent grease leakage.
While the stop rings 42, 42 are fitted,
Is a wiper that slidably presses against the surfaces of the lift members 5, 5.
The under-floor buried type lift device is characterized in that a ring 43 is fitted therein.

[0008]

According to the first aspect of the present invention, the fitting groove 30a is provided.
Fitting part 30 having fitting and fitting in which the fitting part 30 is fitted
Because it has a swingable structure consisting of the shaft 31,
The central axes of the shaft members 5, 5 are the central axes of the guide members 6, 6.
Easy to follow, smooth lifting members 5,5
Can be obtained and can be easily attached and detached.
The unreasonable load on the inner sliding surfaces of the members 6 and 6 is reduced.
Effective wear and damage of the guide members 6 and 6 are effective
Will be prevented.

According to the second aspect of the present invention, the lift portion
The lower ends of the members 5 and 5 and the left and right ends of the base frame member 3
Of the hydraulic cylinder 2 in addition to the swingable structure of
0, a pulley attached to the drive rod 20a.
Id part 21 and a chain wound around it in a generally inverted U-shape
And a power transmission cable body 22 comprising
Large due to the small stroke of the hydraulic cylinder 20
Lifting and lowering can be obtained.

[0010] According to the third aspect of the present invention, the lift portion is provided.
The lower ends of the members 5 and 5 and the left and right ends of the base frame member 3
And a guide portion 21 including a pulley and the like.
The dynamics composed of the power transmission cable 22 composed of a chain and the like
In addition to the force transmission structure, the guide member 6
It has a plurality of grooves 40a-d in the axial direction,
Prevents grease leakage in the upper and lower grooves of this grease reservoir
Fittings 42, 42, and insert the wiper into the uppermost groove.
The lifting members 5, 5
Can provide extremely smooth sliding over a long period of time. Ma
In addition, due to the wiping effect of the wiper ring 43, the floor surface
2 attached to the surfaces of the lift members 5, 5 fed out.
No dust or dust is brought inside,
Conversely, the residual group adhered to the surfaces of the lift members 5 and 5 inside.
The squirrel 41 and the like are not carried outside. Mochi
Of course, the internal structure of the guide members 6, 6 and the lift
Due to the synergistic effect with the rockable structure of materials 5 and 5,
Smooth ascent and descent can be obtained stably over a long period of time.

[0011]

1 to 9 show an embodiment of a lift device buried under the floor according to the present invention. In these figures, 1 is a pit formed underground or under the floor of a building, 2 is a floor surface of the pit 1, and 3 is extended at least to the left and right made of a long steel material or the like housed in the pit 1 so as to be able to move up and down. A rod-shaped base frame member (a rectangular base frame member extending in the front-rear and left-right directions is also possible), 4 is a drive unit comprising a mechanism for moving the base frame member 3 up and down, and 5 and 5 are left and right Lift members 6 and 6 erected near the end; guide members installed on the floor 2 on which the two lift members 5 and 5 are inserted and guided so as to be able to move up and down;
Numerals 7 and 7 denote receiving parts for a lift object such as a vehicle, which are composed of flat plate members attached to the upper ends of the lift members 5 and 5. Numerals 8 and 8 are vertically mounted in the pit 1 and the base. The guide rails 11 to which the rotating rollers 10... Attached to the mounting portions 9 of the frame member 3 are rolled are similarly mounted vertically in the pit 1.
And a rack member 13 having a rack 11a in which a locking claw 12 attached to the inside between the mounting portions 9 of the base frame member 3 engages, and the end portion of the base frame member 3 and the mounting portion The tension rods 13a extending between the left and right upper corners of the mounting parts 9, 9 are tension adjusting parts of the tension rods 13. is there. Each of these components is configured as one unit structure that fits in the pit 1.

As shown in FIG. 3, the drive unit 4 for vertically moving the base frame member 3 includes a hydraulic cylinder 20 erected on the bottom 1a of the pit 1 and a drive rod 20a of the hydraulic cylinder 20. A guide portion 21 comprising two mounted pulleys and the like,
And the other end is connected to the drive rod 20a.
And a power transmission cable body 22 composed of two chains and the like fixed to the base frame member 3 side in a substantially inverted U-shape via the guide portion 21. The driving unit 4 includes a hydraulic unit 23 (a driving source such as a motor, a hydraulic pump driven by the driving source, an oil tank for the hydraulic pump, etc.) installed below the floor surface 2 of the unit structure. The hydraulic cylinder 20 is driven by the (built-in unit), and the base frame member 3 is moved up and down by the expansion and contraction of the drive rod 20a accompanying this.

Also, at the lower ends of the lift members 5, 5,
For example, as shown in FIGS. 4 and 5, a fitting portion 30 having a downward U-shaped fitting groove 30 a is provided.
Left U-shaped groove 30a is the base frame member 3
It is configured to be detachably fitted to the fitting shaft 31 provided at the right end simply by dropping from above. This structure
The swinging structure of the lift members 5, 5
With the fitting part 30 having the U-shaped fitting groove 30a facing upward
The fitting shaft 31 is provided at the left and right ends of the base frame member 3.
To the lower ends of the lift members 5 and 5 in reverse order.
Is also good. On the other hand, for example, FIG.
As shown in FIG. 5, a plurality of grooves 40a to 40d are provided, one of which is filled with grease 41 for rust prevention and lubrication as a grease reservoir 40b, and the upper and lower grooves 40a, 40c of the grease reservoir 40b are provided. Are fitted with grease leakage prevention rings 42, 42 made of a cloth material or the like, and a wiper ring 43, which is slidably pressed against the surfaces of the lift members 5, 5, is fitted into the uppermost groove 40d.

According to the underfloor buried type lift apparatus of the present invention thus configured, first, when installing the unit, the above-described components are installed in a pit 1 provided under the floor or the like. What is necessary is just to drop and bury every structure. That is, simple installation is possible by making the whole unit structure. Then, in using the same, that is, when lifting a lift object such as a vehicle, the hydraulic cylinder 20 is driven to extend the drive rod 20 a, and the base frame member 3 is raised via the cord 22. Then, as the base frame member 3 is raised, the lift members 5 and 5 erected on the left and right of the base frame member 3 are directly raised.
Since the receiving portions 7, 7 at the upper ends of the lifting members 5, 5 are raised by the lifting of the lifting members 5, 5, the lift target such as a vehicle placed between the receiving portions 7, 7 is not shown in FIG. It is lifted as shown by the dashed line.

At the time of lifting, the left and right lift members 5 and 5 are simultaneously raised in synchronization with the left and right due to the configuration of the base frame member 3, so that the right and left lift members 5 and 5 are accurately raised without a difference in elevation on the left and right. This accurate rise is also ensured by a guide mechanism including the rotating rollers 10 and the guide rails 8 attached to the mounting portions 9 of the base frame member 3.

Also, if the base frame member 3 and the entire apparatus are slightly distorted during the vertical movement, the center axes of the lift members 5 and 5 may be shifted from the center axes of the guide members 6 and 6. However, in the present invention, as described above, the lower ends of the lift members 5 and 5 are connected to the fitting shaft of the base frame member 3 via the fitting portion 30 having the downward U-shaped fitting groove 30a. 31, that is, a swingable structure in which the lower ends of the lift members 5 and 5 have some play, so that the central axes of the lift members 5 and 5 The movement makes it easy to follow the central axis of the guide members 6 and 6, so that the lift members 5 and 5 can be smoothly lifted and lowered. Furthermore, as a result, an excessive load on the inner sliding surfaces of the guide members 6, 6 is reduced as much as possible, so that excessive wear and damage of the guide members 6, 6 can be effectively prevented. . Also, due to the fitting relationship between the lower ends of the lift members 5 and 5 described above, the lift members 5 and 5 can be easily removed for maintenance or the like by simply pulling them out, so that it is easy to respond. Becomes possible. For example, by pulling out the lift members 5, 5, grease is supplied to the inner grooves 40 a to 40 d of the guide members 6, 6, and each ring member is
Exchange becomes easy.

In the present invention, as described above, the plurality of grooves 40a to 40d are formed on the inner sliding surfaces of the guide members 6 and 6.
And a grease 41 for rust prevention and lubrication, or a grease leakage prevention ring 42 for preventing grease leakage,
Since the grease 41 and the wiper ring 43 are fitted, the surface of the lift members 5, 5 is supplied with the stable grease 41 for a long period of time, and the extremely smooth lift members 5, 5 are provided.
5 are obtained. Also, even if dust and dirt adhere to the surfaces of the lift members 5 and 5 fed out onto the floor 2 during the work due to the wiper ring 43, the dust and dirt and the like are removed from the inside of the guide members 6 and 6. It is effectively wiped off without being brought into the room. Conversely, when the lift members 5, 5 are fed, the residual grease 41 on the surfaces of the lift members 5, 5 is effectively wiped off, and the clothes and the like of the worker are not stained. Furthermore, the smooth movement of the lift members 5, 5 can be obtained by the synergistic effect of the internal structure of the guide members 6, 6 and the swingable fitting relationship of the lower ends of the lift members 5, 5. . At the same time, the smooth sliding of the lift members 5, 5 allows the guide members 6, 6 to have a long and stable life.

Further, in the present invention, as described above, since the lock mechanism including the rack member 11 having the rack 11a and the locking claw 12 is provided for the base frame member 3, the lift members 5, 5 Is always stably maintained. Therefore, the worker can always perform the work with peace of mind, and is not exposed to unexpected danger.

In order to lower the lift members 5 and 5 after the desired work is completed from the use state, the hydraulic cylinder 20 is driven and the drive rod 20a is contracted. Due to its own weight, the base frame member 3 and the like are lowered to the position shown by the solid line in FIG. 1 and stored under the floor.

In the above-described embodiment, the mounting portion 9 of the base frame member 3 is formed of a simple rectangular plate, and the tension rods 13a. The present invention is not limited to this. For example, FIG.
As shown in FIG. 0, the mounting portion 9a may be a relatively large trapezoidal reinforcing plate-like body. Further, the receiving portion 7 formed of a flat plate-like plate member attached to the upper end of the lift member 5 is not limited to the flat plate member. For example, as shown in FIG. T-shaped member 50, two open / close members 51, 51 pivotally attached to both free ends of the T-shaped member 50, and extendable and contractible near the ends of the open / close members 51, 51. As the receiving portion 7a including the attached elastic members 52, 52, it is possible to more stably and reliably mount a lift object such as a vehicle.

[0021]

As apparent from the above description, in underfloor embedded lifting apparatus according to claim 1, wherein according to the present invention, riffs
And the left and right ends of the base frame member 3
Fitting portion 30 having a fitting groove 30a between the portions and the fitting portion 3
0 is fitted with the fitting shaft 31 to be able to swing.
Equipped, detachable with lift members 5,5 falling down from above
The center axes of the lift members 5, 5
It is easier to follow the central axis of the door members 6, 6,
Flexible structure of the whole equipment can be realized and smooth lift member
5,5 lifting and lowering and smooth operation of the whole device
Can be As a result, the inner sliding of the guide members 6
The guide members 6, 6
Unnecessary abrasion and damage are effectively prevented.
Furthermore, the fitting portion 30 having the fitting groove 30a and the fitting portion 30
Swingable consisting of a fitting shaft 31 into which the fitting portion 30 is fitted
In the case of a structure, simply pull it out for maintenance etc.
Only to easily remove the lift members 5, 5
And good maintainability can be obtained.

A lift device buried under the floor according to claim 2 of the present invention.
In the installation, the lower ends of the lift members 5, 5 and the base frame member
In addition to the swingable structure with the left and right ends of the drive unit 3, the drive unit 4
Was mounted on the drive rod 20a of the hydraulic cylinder 20
Guide part 21 composed of a pulley and the like, and approximately U-shaped
Power transmission cable 22 composed of a chain or the like wound around
The hydraulic cylinder 20 has a small number of struts.
A large list up and down is obtained by the work. That is,
Inexpensive hydraulic cylinder 20 with short contraction stroke
Is possible.

A lift device buried under the floor according to claim 3 of the present invention.
In the installation, the lower ends of the lift members 5, 5 and the base frame member
3 and the pulley, etc.
Cable for power transmission consisting of a guide part 21 and a chain
22 and the guide member 6
It has a plurality of grooves 40a-d in the axial direction of its inner sliding surface.
Then, the one grease reservoir, the upper and lower grooves of this grease reservoir
The grease leakage prevention rings 42, 42 are fitted into the
The wiper ring 43 is fitted into the groove at the upper end.
The lifting members 5 and 5 are extremely smooth over a long period
Smooth sliding is obtained. Also, wiper ring 43 is wiped off.
Lift member extended on the floor surface 2 by the lifting effect
Dust or dust adhering to the surface of 5, 5 is brought inside
And the lift members 5 and 5
The residual grease 41 attached to the surface is carried externally.
It will not be. Of course, the guide members 6 and 6
Between the internal structure and the swingable structure of the lift members 5 and 5
Synergistic effect allows smoother lifting and lowering over a long period of time
Obtained stably. In addition, during maintenance, the lift
The easy extraction of the materials 5
Supply of grease to the inner grooves 40a to 40d of the
Exchange of each ring member can be easily performed.

[Brief description of the drawings]

FIG. 1 is a partial vertical sectional view showing the whole of an embodiment of a lift device buried under floor according to the present invention.

FIG. 2 is a partial plan view showing a central portion of a base frame member of the underfloor embedded lift device according to the present invention.

FIG. 3 is a partial side view showing a driving unit of the underfloor lift device according to the present invention.

FIG. 4 is a partial side view showing a fitting relationship between a base frame member and a lower end of the lift member of the underfloor embedded lift device according to the present invention.

FIG. 5 is a partial plan view showing a fitting relationship between a base frame member and a lower end of the lift member of the underfloor embedded lift device according to the present invention.

FIG. 6 is a partial vertical sectional side view showing a relationship between a lift member and a guide member in the underfloor embedded lift device according to the present invention.

FIG. 7 is a plan view showing a receiving portion at an upper end of a lift member in the underfloor embedded lift device according to the present invention.

FIG. 8 is a partial side view showing a relationship between a guide rail and a rotating roller in the underfloor embedded lift device according to the present invention.

FIG. 9 is a schematic partial side view showing a lock mechanism including a rack member and a locking claw in the underfloor embedded lift device according to the present invention.

FIG. 10 is a partial side view showing another embodiment of the mounting portion of the base frame member in the underfloor embedded lift device according to the present invention.

FIG. 11 is a plan view showing a receiving portion according to another embodiment of the upper end of the lift member in the underfloor embedded lift device according to the present invention.

[Explanation of symbols]

Reference Signs List 1 pit 2 floor surface 3 base frame member 4 drive unit 5 lift member 6 guide member 7, 7a receiving unit for lift target 8 guide rail 9, 9a mounting unit 10 rotating roller 11 rack member 12 locking claw 20 hydraulic cylinder 20a drive Rod 21 Guide portion 22 Cable 30 for power transmission Fitting portion 30a Fitting groove 31 Fitting shafts 40a to d Groove portion 41 Grease 42 Grease leakage prevention ring 43 Wiper ring

Continuation of the front page (56) References JP-A-7-237895 (JP, A) JP-A-3-80094 (JP, U) JP-A-2-139893 (JP, U) (58) Fields surveyed (Int) .Cl. ⁶ , DB name) B66F 7/02 B66F 7/20 B66F 7/28

Claims (3)

(57) [Claims] And 1. A base frame member 3 which is vertically movably housed in a pit 1 is formed in the floor 2, a driving unit 4 for vertically moving said base frame member 3, at least the right and left of the base frame member 3 Lift member installed upright
And 5,5, the two lifting members 5,5 guide member 6 which is installed on the floor surface 2 which is guided is inserted vertically movably,
6 and the lower ends of the lift members 5, 5 and the front.
A fitting groove 30a is provided between the left and right ends of the base frame member 3.
Fitting part 30 having fitting and fitting in which the fitting part 30 is fitted
A swingable structure comprising a shaft 31;
A lift device buried under the floor, wherein the members 5, 5 are detachably fitted so as to fall from above . 2. An ascent and descent in a pit 1 formed on a floor surface 2.
And the base frame member 3 stored therein.
A drive unit 4 for moving the frame member 3 up and down;
Lift members erected on the left and right of the base frame member 3
5,5 and the two lift members 5,5 are inserted so as to be able to move up and down.
Guide members 6 installed on the floor 2 to be guided
6 and the lower ends of the lift members 5, 5 and the front.
A fitting groove 30a is provided between the left and right ends of the base frame member 3.
Fitting part 30 having fitting and fitting in which the fitting part 30 is fitted
A swingable structure comprising a shaft 31;
The members 5 and 5 are detachably fitted in the form of being dropped from above,
And the drive unit 4 is provided upright on the bottom 1 a of the pit 1.
Hydraulic cylinder 20 and the drive of the hydraulic cylinder 20
A guide portion including a pulley mounted on the moving rod 20a
21 and one end is fixed to the hydraulic cylinder 20 side.
In both cases, the other end is connected to the guide portion 21 of the drive rod 20a.
Through the base frame member 3 in a substantially inverted U-shape
A power transmission cable 22 composed of a fixed chain or the like;
A lift device buried under the floor , comprising: 3. An ascent and descent in a pit 1 formed on a floor surface 2.
And the base frame member 3 stored therein.
A drive unit 4 for moving the frame member 3 up and down;
Lift members erected on the left and right of the base frame member 3
And 5,5, pre SL both lifting members 5,5 is inserted vertically movably
Guide members 6 installed on the floor 2 to be guided
6 and the lower ends of the lift members 5, 5 and the
A fitting groove 30a is formed between the left and right ends of the base frame member 3.
Fitting portion 30 and fitting shaft to which fitting portion 30 is fitted
31. The lift member comprises a swingable structure comprising:
5, 5 are detachably fitted in the form of falling from above,
The drive unit 4 is provided upright at the bottom 1a of the pit 1.
Hydraulic cylinder 20 and drive of the hydraulic cylinder 20
Guide part 2 including a pulley mounted on rod 20a
1 and one end is fixed to the hydraulic cylinder 20 side.
At the other end via the guide portion 21 of the drive rod 20a.
And fixed to the base frame member 3 side in a substantially inverted U-shape.
A power transmission cable 22 composed of a worn chain and the like
Further, the guide member 6 has an inner sliding surface.
It has a plurality of grooves 40a-d in the axial direction,
The grease reservoir is filled with grease 41 and the grease reservoir is
Grease leakage prevention rings 42, 42 are fitted in the upper and lower grooves.
On the other hand, the surface of the lift members 5 and 5
The wiper ring 43 that slidably presses into the
A lift device buried under the floor, characterized in that: