JPH08337394A - Lift for vehicle - Google Patents

Abstract

PURPOSE: To simplify the configuration and facilitate maintenance and inspection by furnishing a coupling body whose undersurface can be joined with the top surface of a load-receiving vertical rotary cylinder, and installing removably this coupling body at that top part of a screw rod which is protruding over the rotary cylinder. CONSTITUTION: A load-receiving vertical rotary cylinder 2 is accommodated in a cover 21, and a large load is borne by a tapered roller bearing 23 through the rotary cylinder 24. In this cylinder the upper part of a screw rod 4 is inserted in such a way as capable of relative movement in the elevating/sinking directions and incapable of relative movement in the rotational direction. A coupling body 25 whose undersurface can be joined with the top surface of the rotary cylinder 24, is removably installed at that top part of the rod 4 which is protruding over the cylinder 24. The coupling body 25 is fastened to the top of the rod 4 by a bolt 25a, and the load applied to the rod 4 is transmitted to the cylinder 24 through this element 25. If the element 25 is removed, a reduction gear 20 can be drawn off from the screw rod 4, which ensures easy maintenance and inspection works.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle lift, and more particularly to a vehicle lift that is buried under a floor to lift and lower a vehicle.

[0002]

2. Description of the Related Art Conventionally, a hydraulic system and a mechanical system have been proposed as a vehicle lift, but in the event of a failure,
Except when a large amount of oil flows out at one time, the hydraulic system has a slow descending speed and is considered to be highly safe, and is currently the mainstream of vehicle lifts.

[0003]

However, the hydraulic system has the problems that a hydraulic pump unit is required, the apparatus becomes large in size and expensive, and piping work is required at the time of installation, and the installation work is complicated.

On the other hand, the mechanical system has a merit that it is compact and easy to install because the drive source is usually obtained by a motor as compared with the hydraulic system. However, as described above, it is safe in case of emergency. It has a problem that it is inferior to the hydraulic type.

Therefore, the inventors of the present invention have previously proposed, in 1993 Utility Model Registration Application No. 76081, that a lifting rod, a screw rod parallel to the lifting rod, and a screw rod are provided on the screw rod in a cylinder in which oil is introduced. A hydraulic type that accommodates a matching ball nut and a connecting arm that is connected between the ball nut and the lower portion of the elevating rod, and rotates the screw rod forward and backward through a speed reducer by a motor. We proposed a vehicle lift that has both mechanical and mechanical advantages. Although this vehicular lift was functionally sufficient, it was pointed out that the mechanism was relatively complicated and maintenance and inspection were actually complicated.

Therefore, the present invention has been made to solve the above problems, and provides a vehicle lift having both advantages of a hydraulic system and a mechanical system, which has a simple structure and can be easily maintained and inspected. It is intended to be provided.

[0007]

In order to solve the above-mentioned problems, in order to solve the above-mentioned problems, the structure of the present invention, which is based on the above-mentioned claims, has been constructed in accordance with the above object. , A screw rod 4 parallel to the lifting rod 5
A ball nut 6 screwed onto the screw rod 4 and a connecting arm 7 connected between the ball nut 6 and the lower portion of the elevating rod 5, and the screw rod 4 is connected to the motor 10
In the vehicle lift configured to be rotated in the forward and reverse directions via the speed reducer 20, the cover 21 of the speed reducer 20 is fixed on the lid 3 of the cylinder 2, and the drive shaft 11 of the motor 10 is placed in the cover 21. A worm 22 which is horizontally inserted and fixed to the drive shaft 11 in the cover 21, and a load receiving vertical rotary cylinder 24 having a worm wheel 24a which is supported by a conical roller bearing 23 at a lower portion and meshes with the worm 22. And the upper part of the screw rod 4 is inserted through the load-carrying vertical rotary cylinder 24 so as to be movable in the vertical direction and immovable in the rotary direction. A coupling means 25, the lower surface of which is joined to the upper surface of the load-carrying vertical rotary cylinder 24, is detachably provided at an upper end portion projecting above 24, and a technical means is provided. A.

The invention of "claim 2" is the oil 40
Into the cylinder 2 in which is charged the lifting rod 5, a screw rod 4 parallel to the lifting rod 5, a ball nut 6 screwed to the screw rod 4, the ball nut 6, and the lifting rod 5
In the vehicle lift in which the connecting arm 7 connected between the lower part of the cylinder 2 and the lower part of the cylinder 2 is housed, and the screw rod 4 is normally and reversely rotated by the motor 10 through the speed reducer 20, the lid 3 of the cylinder 2 is mounted. The cover 21 of the speed reducer 20 is fixed to the cover 21, the drive shaft 11 of the motor 10 is horizontally inserted into the cover 21, and the worm 22 fixed to the drive shaft 11 and the lower part of the cover 21 are conical rollers. Worm wheel 24a supported by a bearing 23 and meshing with the worm 22
The load receiving vertical rotary cylinder 24 having the above is housed, and the fall prevention ratchet ring 31 and the rotation amount detecting slit ring disk 32 are fixed to a portion of the load receiving vertical rotary cylinder 24 protruding above the cover 21. , A ratchet pawl adapted to be detached when the screw rod 4 is rotated in the reverse direction and the elevating rod 5 is lowered by being urged by the fall prevention ratchet ring 31 in a proper engagement position at an appropriate fixed position on the cover 21. 34 and a sensor 33 for detecting the rotation amount of the rotation amount detecting slit ring disk 32 are provided, and the upper part of the screw rod 4 is movable in the vertical direction in the load receiving vertical rotation cylinder 24 and is movable in the rotation direction. Are inserted so that they cannot move relative to each other, and the lower surface is joined to the upper surface of the load receiving vertical rotating cylinder 24 of the screw rod 4 so as to be joined to the upper surface of the load receiving vertical rotating cylinder 24. In which it took technical means, characterized in that provided detachably 25.

The invention of "Claim 3" is the oil 40
Into the cylinder 2 in which is charged the lifting rod 5, a screw rod 4 parallel to the lifting rod 5, a ball nut 6 screwed to the screw rod 4, the ball nut 6, and the lifting rod 5
In the vehicle lift in which the connecting arm 7 connected between the lower part of the cylinder 2 and the lower part of the cylinder 2 is housed, and the screw rod 4 is normally and reversely rotated by the motor 10 through the speed reducer 20, the lid 3 of the cylinder 2 is mounted. The cover 21 of the speed reducer 20 is fixed to the cover 21, the drive shaft 11 of the motor 10 is horizontally inserted into the cover 21, and the worm 22 fixed to the drive shaft 11 and the lower part of the cover 21 are conical rollers. Worm wheel 24a supported by a bearing 23 and meshing with the worm 22
The load receiving vertical rotary cylinder 24 having the above is accommodated, and the fall prevention ratchet ring 31 and the rotation amount detecting slit ring disk 32 are fixed to a portion of the load receiving vertical rotary cylinder 24 protruding above the cover 21. At a proper fixed position on the cover 21, the engagement is detachable by a solenoid 35 or the like when the fall prevention ratchet ring 31 is normally urged in the engagement direction to reverse the screw rod 4 and lower the elevating rod 5. The ratchet claw 34 and the sensor 33 for detecting the rotation amount of the rotation amount detecting slit ring disk 32 are provided.
The upper part of the screw rod 4 is inserted into the vertical rotary cylinder 24 so as to be movable in the vertical direction and immovable in the rotary direction, and protruded above the load receiving vertical rotary cylinder 24 of the screw rod 4. A connecting body 25, whose lower surface can be joined to the upper surface of the load receiving vertical rotary cylinder 24, is detachably provided at the upper end portion, and further, on the cover 21, the lowering end of the elevating rod 5 is raised when the connecting body 25 is raised. And a limit switch LS2 for detecting the ascending end of the elevating rod 5 by the ascending of the operating rod 53 which is planted in the connecting arm 7 and the upper end of which can be put in and out through the through hole 3b of the lid 3.
The technical measures are characterized by the provision of and.

[0010]

Next, the operation of the present invention will be described with reference to the accompanying drawings. In the vehicle lift of the present invention, when the lift is moved up and down, first, electric power is supplied to the motor 10 from a power source (not shown). The motor 10 is rotated by the power supply, and the screw rod 4 is rotationally driven. And by the rotation of the screw rod 4,
The ball nut 6 screwed to the screw nut moves up and down, and at the same time, the connecting arm 7 connected to the ball nut 6 and the elevating rod 5 connected to the connecting arm 7 ascend or descend.

That is, when the screw rod 4 is rotationally driven by rotating the motor 10 in the normal direction, the rotation of the screw rod 4 causes the ball nut 6 screwed to the screw rod 4 to move upward, and at the same time, the ball nut. The connecting arm 7 connected to 6 and the lifting rod 5 connected to the connecting arm 7 rise. And
The load at that time is applied to the screw rod 4, but the load of the screw rod 4 is supported by the conical roller bearing 23 through the connecting body 25 and the load receiving vertical rotary cylinder 24, and the screw rod 4 is supported. 4 is rotatable and acts so as to resist a large load.

When the screw rod 4 is driven to rotate in the reverse direction by reversing the motor 10, the rotation of the screw rod 4 causes the ball nut 6 screwed into the screw rod 4 to be threaded, and at the same time, the ball nut 6 is screwed. The connecting arm 7 connected to the ball nut 6 and the elevating rod 5 connected to the connecting arm 7 exhibit the action of descending.

The oil 4 put in the cylinder 2
0 acts as a lubricating oil for the screw rod 4 and the ball nut 6, and also acts as a buffer when the elevating rod 5 is about to drop rapidly.

According to the second aspect of the present invention, the fall prevention ratchet ring 31 and the rotation amount detecting slit ring disk 32 are fixed to a portion of the load receiving vertical rotary cylinder 24 protruding above the cover 21. , A ratchet pawl adapted to be detached when the screw rod 4 is rotated in the reverse direction and the elevating rod 5 is lowered by being urged by the fall prevention ratchet ring 31 in a proper engagement position at an appropriate fixed position on the cover 21. 34 and the sensor 33 for detecting the rotation amount of the rotation amount detecting slit ring disk 32 are provided, and thus the fall prevention ratchet ring 31
The engagement between the ratchet claw 34 and the ratchet claw 34 serves to prevent a fall accident. In addition, this fall prevention ratchet ring 31
Since the meshing between the ratchet claw 34 and the ratchet claw 34 is released when lowering the lift, it is the same as the general strict observance items of the lift to confirm that there is no person in the vicinity during the lowering operation.

Further, according to the invention of "claim 3", a limit switch LS1 for detecting the end of the descending of the elevating rod 5 by the ascending of the connecting body 25 on the cover 21, and an upper end planted on the connecting arm 7 are provided. Is provided with a limit switch LS2 that detects the rising end of the lifting rod 5 when the operating rod 53 that can be moved in and out through the through hole 3b of the lid 3 is provided. Therefore, in addition to the above-described action, the limit switches LS1 and LS2 are used to lift and lower. It has the function of detecting and controlling the end.

That is, in the state shown in FIG. 1, when the ball nut 6 comes into contact with the lower end stopper and the screw rod 4 reverses, the ball nut 6 does not descend any further.
This time, the screw rod 4 comes out of the ball nut 6 and the screw rod 4 rises, so that the lower end of the lift can be detected in this state.

When the lift is raised, the connecting arm 7 is also raised, and the operating rod 53 implanted is projected from the through hole 2b. The limit rod LS2 is operated by the operating rod 53 to detect the rising end of the lift. It is possible. The through hole 2b functions as an oil inlet as well as an inlet / outlet port for the operation rod 53, and also as an air vent as the oil surface of the cylinder 2 and the like moves up and down as the lift moves up and down.

[0018]

Embodiments of the present invention will be described below with reference to the accompanying drawings. In the figure, 2 is a cylinder,
This cylinder 2 has a bottom surface 2c and has a container shape, has a flange portion 2d at its upper end, and mounts and fixes this flange portion 2d on a frame 1, 1 which is parallel to an appropriate portion.
The whole is suspended and held vertically. Although only one cylinder 2 is shown in the illustrated example, it is needless to say that a pair of cylinders 2 may be used as a pair to be used as a two-post type lift. It is supposed to be used as a lift. When used as a two-pillar lift, a pair of lifts having the same respective configurations described below are used.

A predetermined amount of oil 40 is injected into the cylinder 2. This oil 40 is used as a smoothing oil and a rust preventive oil for the storage equipment, but as another major purpose, it is used as a cushioning agent in the event of an accident where various lifting members suddenly fall under the load. Therefore, it is desirable to use a material having an appropriate viscosity for that purpose.

In the cylinder 2, an elevating rod 5, a screw rod 4 parallel to the elevating rod 5, and the screw rod 4 are provided.
And a connecting arm 7 connected between the ball nut 6 and the lower portion of the elevating rod 5.
Are stored, and the screw rod 4 is normally and reversely rotated by the motor 10 via the speed reducer 20.

In the present embodiment, the lifting rod 5 has a lid 3 fixed to the flange portion 2d of the cylinder 2 and a metal 51 penetrating the lid 3 is provided, and the lifting rod 5 is guided by the metal 51. It is designed to go up and down.

The screw rod 4 uses a ball bolt (ball screw shaft) with which a ball nut 6 meshes.
Of course, the screw rod 4 is rotatably supported, but in the present embodiment, the limit switch LS1 for detecting the end of descending, which will be described later, is operated by raising the screw rod 4 so that the screw rod 4 is slightly moved. An elevation allowance gap is provided (a specific configuration will be described later), and the screw rod 4 can be raised and lowered within a certain range.

In order to connect the ball nut 6 screwed to the screw rod 4 and the lower part of the elevating rod 5 with the connecting arm 7, the connection between the ball nut 6 and the elevating rod 5 by the connecting arm 7 is changed. Although it may be fixed so as to be impossible, in the present embodiment, when a force other than the vertical direction is applied to the screw rod 4, the screw rod 4 is bent and the ball nut 6 and the screw rod 4 are smoothly conducted. There is a risk that it will not be. Therefore, the force from the connecting arm 7 is always applied to the ball nut 6 only in the vertical vertical direction.

That is, the ball nut 6 is provided with an outer cylinder 61 in which the ball nut 6 is loosely fitted and a horizontal shaft 62.
Is pivotally supported (in the embodiment, not directly to the ball nut 6 but via the ball nut holder 6a), and between the flange portions 63, 63 connected to the upper and lower ends of the outer cylinder 61. 7 (the pair is placed in front of the back in FIG. 1) is inserted, and the connecting arm 7
On the upper and lower sides, load receiving pins 71, 71 are provided.

Therefore, the outer cylinder 61 has a universal joint-like function, and when the connecting arms 7, 7 move up and down, it moves in a direction other than the vertical direction (when an unbalanced load is applied to the lift, the lifting rod 5 is slightly inclined. However, the ball nut 6 always receives a force only in the vertical direction. In addition to the tilting force, a force may be applied to the elevating rod 5 in the rotation direction with the central axis as the rotation axis. In this case, the load receiving pins 71, 71 may come off the flange portions 63, 63. Therefore, if necessary, a stopper for limiting the displacement of the load receiving pins 71, 71 in the horizontal direction in a certain range is provided, or the rotation of the elevating rod 5 is prevented (this embodiment does not clearly show the drawings. However, the plate 5a provided at the lower end of the elevating rod 5 is provided with a recessed portion at the edge thereof, and a guide rail that engages with this recess is vertically fixed to the inner surface of the cylinder 2 to prevent the elevating rod 5 from rotating. You can do so.

As the motor 10, a motor with a brake capable of rotating in the forward and reverse directions is used. And this motor 1
No. 0 rotates the reduction screw rod 4 via the speed reducer 20.

The above is almost the same as the one previously proposed by the present inventors as the utility model registration application No. 76081 in 1993, but in the present invention, in pursuit of simplification of configuration and ease of maintenance and inspection, A cover 21 of the speed reducer 20 is fixed on the lid 3 of the cylinder 2, the drive shaft 11 of the motor 10 is horizontally inserted into the cover 21, and the worm fixed to the drive shaft 11 is inside the cover 21. 22 and a load receiving vertical rotary cylinder 24 having a worm wheel 24a which is supported by a conical roller bearing 23 at its lower portion and meshes with the worm 22.

The drive shaft 11 of the motor 10 is horizontally inserted into the cover 21 of the speed reducer 20, and the worm 22 fixed to the drive shaft 11 and the worm 2 are fixed in the cover 21.
The worm wheel 24a that meshes with 2 is housed in the same way as a general speed reducer, but the normal speed reducer 20 is
Even assuming that a predetermined torque is applied to the reduction mechanism,
Since it is not assumed that a very large load is directly applied as in a vehicle, a mechanism for receiving the load had to be provided separately from the speed reducer 20. Therefore, the present invention directly supports the load of a vehicle that moves up and down at the speed reduction mechanism part, and has a lower portion that is supported by a conical roller bearing 23 and has a worm wheel 24a that meshes with the worm 22 for vertical rotation of the load receiver. The cylinder 24 is housed in the cover 21, and a large load is supported by the conical roller bearing 23 via the load receiving vertical rotary cylinder 24.

Although the shaft of the worm wheel 24a needs to maintain a predetermined positional relationship with the shaft of the worm 22, the conical roller bearing 23 can be used to maintain this positional relationship. In other words, the conical roller bearing 23 serves both as a radial bearing and a thrust bearing, and in this embodiment, a thrust bearing 23a is also provided above the conical roller bearing 23 to position the worm 22 and the worm wheel 24a. The relationship is maintained. Further, in the illustrated example, the load receiving vertical rotary cylinder 24 and the worm wheel 24a are shown as being integrally formed, but it goes without saying that they may be separately formed and connected.

The upper part of the screw rod 4 is inserted through the load-carrying vertical rotary cylinder 24 so as to be movable in the vertical direction and immovable in the rotational direction. In order to insert the upper part of the screw rod 4 in the vertical rotation cylinder 24 so as to be movable in the vertical direction and immovable in the rotation direction, the screw rod 4 and the load receiving vertical rotation cylinder 24 are inserted by the key and the key groove. Of course, it is only necessary to connect and.

Then, a connecting body 25, whose lower surface is joined to the upper surface of the load receiving vertical rotating cylinder 24 at the upper end portion of the screw rod 4 projecting above the load receiving vertical rotating cylinder 24, is provided.
Is detachably installed.

The connecting body 25 is fastened to the upper end of the screw rod 4 with a bolt 25a, and the load applied to the screw rod 4 is passed through the connecting body 25 at the upper end of the screw rod 4 to the load receiving vertical rotary cylinder 24. It is designed to be transmitted to.

Therefore, when the connecting body 25 is attached and detached, the speed reducer 20 can be pulled out from the screw rod 4, and maintenance and inspection can be performed very easily.

In addition to the above-mentioned structure, the invention of "Claim 2" further includes a fall prevention ratchet ring 31 and a rotation amount detecting slit ring disk 32 at a portion of the load-receiving vertical rotary cylinder 24 protruding above the cover 21. Are fixed to a proper fixed position on the cover 21 so that the engagement can be removed when the screw rod 4 is reversely rotated by the fall prevention ratchet ring 31 in the meshing direction to lower the elevating rod 5. The ratchet claw 34 and the sensor 33 for detecting the rotation amount of the rotation amount detecting slit ring disk 32 are provided.

The fall prevention ratchet ring 31 and the ratchet pawl 34 are for preventing fall, and the rotation amount detecting slit ring disc 32 is for indirectly detecting the ascending / descending position of the ascending / descending rod 5 (particularly, two pillar type). In this case, the rotation of the rotation amount detecting slit ring disk 32 is detected by the sensor 33 to be used for synchronization, or when the head difference exceeds a predetermined value, the lifting and lowering is automatically stopped. As proposed in the previous application, in the present invention, by locating the reducer 20 above the gears, those frequently required for maintenance and inspection are arranged at a position where they can be easily operated.

As the ratchet ring 31 and the ratchet pawl 34 described above, conventionally known ones can be used, which allow forward rotation but inhibit reverse rotation. A spring 27 is attached to the ratchet pawl 34 for urging the ratchet pawl 34 in a direction in which the ratchet pawl 34 is always locked to the ratchet ring 31.

Further, the ratchet pawl 34 is connected with a detaching device 24 such as a solenoid capable of detaching the engagement with the ratchet ring 31 when necessary. When lowering the lift, the desorption device 24 is operated to move the ratchet pawl 3
Unless the engagement of 4 with the ratchet ring 31 is removed,
The motor 10 cannot be energized. In the case of the present embodiment, the attachment / detachment confirmation sensors 26 are provided on the ratchet pawls 34 constituting the pair of lifts 1 and 1, respectively.
The motor 10 can be energized when the attachment / detachment confirmation sensors 26 both confirm the attachment / detachment of the ratchet pawls 34. As the attachment / detachment confirmation sensor 26, for example, a limit switch is used, and when the limit switch is in the ON state, the motor 10 can be energized.

In the above, the reason why the attachment / detachment confirmation sensor 26 is attached is that if the raising / lowering rod 5 is lowered before the attachment / detachment of the ratchet claw 34, the ratchet ring 31 is firmly meshed with the ratchet claw 34, and thereafter. This is because the ratchet claw 34 cannot be attached / detached by the attachment / detachment device 24. Even if this safety device works,
The ratchet claw 34 and the ratchet ring 31 are in a tight meshing state. In this case, it is desirable to raise the elevating rod 5 once and then lower it for safety confirmation.

Further, in addition to the above-mentioned structure, the invention of "Claim 3" has a limit switch LS1 on the cover 21 for detecting the descending end of the ascending / descending rod 5 by the ascending of the connecting body 25.
And the upper end of the lid 3 is planted in the connecting arm 7 and the lid 3 has a through hole 3b.
By raising the operating rod 53 that is more accessible, the lifting rod 5
And a limit switch LS2 for detecting the rising end of the.

The limit switch LS1 for detecting the end of the lowering of the lifting rod 5 cannot be lowered further if the motor 10 continues to rotate when the lifting rod 5 is lowered to the lowermost position. Stick 4
It acts so that it is screwed and raised. If the screw rod 4 can be moved up and down within a predetermined range, the screw rod 4 moves up and the limit switch LS1 is operated. When the limit switch LS1 is operated by raising the screw rod 4, the electric power supply to the motor 10 is cut off and the motor 10 is stopped.

The limit switch LS2 for detecting the end of the ascending / descending of the ascending / descending rod 5 is operated by the ascending of the operating rod 53 so that the power supply to the motor 10 is cut off and the motor 10 is stopped.

In the figure, reference numeral 80 denotes an upper cover box which covers the above-mentioned mechanisms to prevent water and the like from entering and a lid 81.
It can be inspected and repaired by removing. The vehicle lift of the present invention is used by embedding the upper surface of the upper cover box 80 so as to be substantially flush with the floor surface.

[0043]

As described above, according to the present invention, the screw rod 4 is driven by the motor 10, and the lift rod 5 connected to the ball nut 6 which is screwed up and down by the screw rod 4 via the connecting arm 7 is moved up and down. It is possible to provide a vehicle lift capable of performing the above.

Since there is no drive unit exposed to the outside of the cylinder 2 in the lower part of the entire apparatus, it is not necessary to store the entire apparatus in a large box. Moreover, since a large box is not used, the manufacturing cost is reduced, and the occupied space for transportation and storage is small. In addition, the amount of soil to be excavated during installation work is smaller than in the case of using a conventional large box, and a vehicle lift having excellent workability can be provided.

Further, according to the present invention, the oil having a predetermined viscosity introduced into the cylinder 2 supplies oil to the screw rod 4 and the lifting rod 5
To prevent vibration when moving up and down, and when the lifting rod 5 falls due to some trouble, the lifting rod 5
Since it serves as a cushioning material (damper) for preventing a sudden drop of the vehicle, it is possible to provide a vehicle lift having the same level of safety and ease of maintenance as a hydraulic type even if it is a mechanical type. .

Further, according to the present invention, the cover 21 of the speed reducer 20 is used.
The drive shaft 11 of the motor 10 is horizontally inserted therein, and the worm 22 fixed to the drive shaft 11 is provided in the cover 21.
The lower part of the worm 2 is supported by a conical roller bearing 23.
A load receiving vertical rotary cylinder 24 having a worm wheel 24a that meshes with the load receiving vertical rotary cylinder 24 is housed, and the lower surface of the screw rod 4 protrudes above the load receive vertical rotary cylinder 24 and the upper surface of the load receive vertical rotary cylinder 24 is the upper surface. Since the connecting body 25 that can be joined to the connecting body is detachably provided, the load of the vehicle can be directly supported by the speed reducer 20, and the mechanism can be simplified.
It is possible to provide a vehicle lift that is easy to inspect and maintain because the speed reducer 20 can be easily removed by detaching the vehicle lift.

Further, in the invention of "Claim 2", the fall prevention ratchet ring 31 and the rotation amount detecting slit ring disk 32 are fixed above the speed reducer 20, and the cover 2
1. A ratchet pawl 34, which is normally urged by a fall prevention ratchet ring 31 in a meshing direction at a proper fixed position on 1 so that the meshing can be detached when the screw rod 4 is reversed and the elevating rod 5 is lowered. Rotation amount detection slit ring machine 3
Since the sensor 33 for detecting the rotation amount of 2 is provided, it is needless to say that the ratchet can prevent a fall accident, but it is possible to provide a vehicle lift located above the ratchet mechanism which is easy to maintain and inspect. . Further, since the fall prevention ratchet ring 31, the rotation amount detecting slit ring disk 32, the ratchet pawl 34, and the sensor 33 are attached to the speed reducer 20, a vehicle lift that can be easily removed together with the speed reducer 20 can be provided. It is a thing.

Further, the invention of "Claim 3" is the cover 21.
A limit switch LS1 for detecting the lower end of the ascending / descending rod 5 by the rise of the connecting body 25, and an operation rod 53 which is planted in the connecting arm 7 and whose upper end can be put in and out through the through hole 3b of the lid 3. Since the limit switch LS2 for detecting the end of the ascending / descending of the ascending / descending rod 5 is provided, it goes without saying that the ascending / descending control can be performed with these limit switches LS1, L.
S2 is also capable of providing a vehicle lift that can be positioned in a place where maintenance and inspection can be easily performed on the upper part.

[Brief description of drawings]

FIG. 1 is a vertical sectional view of a vehicle lift according to the present invention.

FIG. 2 is a plan view with the lid of the lift removed.

[Explanation of symbols]

 2 cylinder 3 lid 3b through hole 4 screw rod 5 lifting rod 6 ball nut 7 connecting arm 10 motor 11 drive shaft 20 speed reducer 21 cover 22 worm 23 conical roller bearing 24 load receiving vertical rotating cylinder 24a worm wheel 25 connecting body 31 fall prevention Ratchet ring 32 Slit ring disc for rotation amount detection 33 Sensor 34 Ratchet claw 40 Oil 53 Control rod LS1 Limit switch LS2 Limit switch

Claims (3)

[Claims] 1. An elevating rod (5), a screw rod (4) parallel to the elevating rod (5), and a screw rod (4) screwed into the cylinder (2) charged with oil (40). And a connecting arm (7) connected between the ball nut (6) and the lower part of the elevating rod (5) are housed, and the screw rod (4) is connected to the motor (10). )
In a vehicle lift configured to perform forward and reverse rotations via a speed reducer (20) by means of the speed reducer (2) on the lid (3) of the cylinder (2).
0) The cover (21) is fixed, the drive shaft (11) of the motor (10) is horizontally inserted in the cover (21), and the drive shaft (11) is fixed in the cover (21). And a load receiving vertical rotary cylinder (24) having a worm wheel (24a) supported by a conical roller bearing (23) at the lower portion and meshing with the worm (22). The upper part of (4) is inserted into the vertical rotation cylinder (24) so that they can move in the vertical direction and cannot move in the rotation direction. The lower surface of the load receiving vertical rotary cylinder (2
A vehicle lift characterized in that a connecting body (25) that can be joined to the upper surface of 4) is detachably provided. 2. An elevating rod (5), a screw rod (4) parallel to the elevating rod (5) and a screw rod (4) screwed into the cylinder (2) filled with oil (40). And a connecting arm (7) connected between the ball nut (6) and the lower part of the elevating rod (5) are housed, and the screw rod (4) is connected to the motor (10). )
In a vehicle lift configured to perform forward and reverse rotations via a speed reducer (20) by means of the speed reducer (2) on the lid (3) of the cylinder (2).
0) The cover (21) is fixed, the drive shaft (11) of the motor (10) is horizontally inserted in the cover (21), and the drive shaft (11) is fixed in the cover (21). And a load receiving vertical rotary cylinder (24) having a worm wheel (24a) supported by a conical roller bearing (23) at the lower portion and meshing with the worm (22). The fall prevention ratchet ring (3) is attached to a portion of the vertical rotation tube (24) projecting above the cover (21).
1) and the rotation amount detecting slit ring disc (32) are fixed, and a screw rod (which is normally urged in the meshing direction by the fall prevention ratchet ring (31) at an appropriate fixed position on the cover (21). 4) The ratchet claw (3) that can be engaged and disengaged when reversing 4) and lowering the lifting rod (5)
4) and a sensor (33) for detecting the rotation amount of the rotation amount detecting slit ring disk (32), and a load receiving vertical rotation cylinder (24) is provided on the upper portion of the screw rod (4).
The inner surface of the screw rod (4) is inserted into the screw rod (4) so as to be movable in the vertical direction and mutually immovable in the rotational direction. Receiving vertical rotary cylinder (2
A vehicle lift characterized in that a connecting body (25) that can be joined to the upper surface of 4) is detachably provided. 3. A lift rod (5), a screw rod (4) parallel to the lift rod (5), and a screw rod (4) screwed into the cylinder (2) charged with oil (40). And a connecting arm (7) connected between the ball nut (6) and the lower part of the elevating rod (5) are housed, and the screw rod (4) is connected to the motor (10). )
In a vehicle lift configured to perform forward and reverse rotations via a speed reducer (20) by means of the speed reducer (2) on the lid (3) of the cylinder (2).
0) The cover (21) is fixed, the drive shaft (11) of the motor (10) is horizontally inserted in the cover (21), and the drive shaft (11) is fixed in the cover (21). And a load receiving vertical rotary cylinder (24) having a worm wheel (24a) supported by a conical roller bearing (23) at the lower portion and meshing with the worm (22). The fall prevention ratchet ring (3) is attached to a portion of the vertical rotation tube (24) projecting above the cover (21).
1) and the rotation amount detecting slit ring disc (32) are fixed, and the screw rod is always urged to a proper fixed position on the cover (21) in the meshing direction by the fall prevention ratchet ring (31). Rotation of the ratchet pawl (34) and the rotation amount detecting slit ring disc (32) which can be engaged and disengaged by a solenoid (35) when lowering the lifting rod (5) by reversing (4). Sensor to detect quantity (3
3) is provided, and the upper part of the screw rod (4) is loaded with a vertical rotary cylinder (24).
The inner surface of the screw rod (4) is inserted into the screw rod (4) so as to be movable in the vertical direction and mutually immovable in the rotational direction. Receiving vertical rotary cylinder (2
A connecting body (25) that can be joined to the upper surface of 4) is detachably provided, and further, the connecting body (25) is provided on the cover (21).
The limit switch (LS1) that detects the end of the descending of the elevating rod (5) by the ascent of the lift rod, and the operation that the upper end of the limit switch (LS) is planted in the connecting arm (7) and can be put in and out through the through hole (3b) of the lid (3). A vehicle lift, comprising: a limit switch (LS2) for detecting a rising end of the lifting rod (5) when the rod (53) is lifted.