JPH0612255U - Lifting platform support device - Google Patents

Abstract

(57) [Summary] [Purpose] When a heavy object such as a mold is moved from a processing machine to a loading platform, or conversely, when a heavy object such as a mold is moved from a loading platform to a processing machine, the weight is applied to the loading platform. It is possible to maintain a predetermined height position without tilting or lowering the platform even when a load of an object is applied. In the supporting device for the lifting platform, a support body 19 is fixed to one of the base 1 and the platform 7, and
On the other hand, an elevating body 41 which is fitted in the supporting body 19 so as to be vertically retractable and rotatable is provided, and a spiral groove 25 is provided in one of the supporting body 19 and the elevating body 41. , 31 are formed, and on the other side, locking bodies 23, 28 that slidably engage with the spiral grooves 25, 31 are provided, and the rotation of a brake body 35 fixed to the elevating body 41 is prevented. Braking means 37 is provided.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to an elevating and lowering platform support device for positioning the height of the platform when moving a work or a die from a processing machine to the platform, for example.

[0002]

[Prior art]

 Conventionally, for example, a carrier has been used as a means for moving a work or a mold (hereinafter, referred to as a mold) processed by a processing machine from the processing machine. There is one described in Japanese Patent Publication 54-17942. As shown in FIG. 4, the carrier described in the publication has a carrier 51 on a carrier main body 50 which can be raised and lowered through an elevating means. The elevating means has an X shape and can be opened and closed. And a jack device (not shown) for opening and closing the supporting rod 53 and raising and lowering the loading platform 51. In addition, a plurality of moving spheres are generally rotatably provided on the upper surface of the loading platform 51 so that the mold 58 can be easily moved.

Then, when the molds 58 and the like mounted on the mounting table 57 of the processing machine 56 are moved, the loading table 51 is moved close to the mounting table 57 and the upper surface of the loading table 51 (sphere) is mounted. The loading platform 51 was raised in a horizontal state so as to be the same as the upper surface of the loading platform 57, and in this state the mold 58 was moved to the loading platform 51 while sliding from the loading platform 57 via the sphere.

[0004]

[Problems to be solved by the device]

 However, when moving a heavy object such as a mold, the load of the mold 58 first acts on the front part of the platform 51, so that the support rod 53 supporting the platform 51 is bent. As a result, the loading platform 51 is lowered forward, and the front part is slightly lower than the loading platform 57, or the entire loading platform 7 is lowered. Therefore, the tip of the mold 58 is placed on the loading platform 51. There is a drawback that they come into contact with each other in an inclined state and it becomes difficult to move the mold 58 to the loading platform 51.

In addition, when the mold 58 mounted on the platform 51 is mounted on the platform 57 of the processing machine 56, the heights of the platform 51 and the platform 57 are set to be equal to each other. When the mold 58 is moved, the rear side of the platform 51 is lifted by the reaction force of the structural members such as the support rod 53, and the mold 58 is moved in the same manner as described above. Will be difficult. Further, as another lifting means, it is conceivable to raise and lower the loading platform 51 with a cylinder, but in this case as well, the cylinder is compressed by the load of the loading platform 51, so the height of the loading platform 51 cannot be maintained accurately. .

The present invention has been made in view of the above-mentioned conventional problems, and moves a heavy object such as a mold from a processing machine or the like to a loading platform, or conversely moves a heavy object such as a die from the loading platform. Provided is a lifting platform support device capable of maintaining a predetermined height position without being inclined or lowered even when a heavy load is applied to the platform when moving to a processing machine or the like. The task is to do so.

[0007]

[Means for Solving the Problems]

 The technical means taken by the present invention to solve the above-mentioned problems is, in a supporting device for an elevating and lowering platform, in which a loading platform 7 is provided on a base body 1 so as to be able to move up and down through elevating means. A support body 19 is fixed to the support body 19, and an elevating body 41 fitted to the support body 19 so as to be vertically retractable and rotatable is provided on the other side. Spiral grooves 25 and 31 are formed in either one of the lifting and lowering bodies 41, and locking bodies 23 and 28 that slidably engage with the spiral grooves 25 and 31 are provided in the other side. The brake means 37 for preventing the rotation of the brake body 35 fixed to the elevating body 41 is provided.

[0008]

[Action]

 In the lifting / lowering platform support device of the present invention, when the metal mold 43 or the like placed on the processing machine 45 is placed on the platform 7, if the brake means 37 prevents the brake body 35 from rotating, The rotation of 41 becomes impossible, the engaging bodies 23 and 28 engaging with the spiral grooves 25 and 31 prevent the ascending / descending body 41 from descending, and the support body 19 and the ascending / descending body 41 receive the load of the mold 43 or the like. To support the platform 7.

Therefore, the loading platform 7 does not tilt, the horizontal state is maintained, the position of the loading platform 7 can be reliably determined, and the mold or the like can be easily and quickly moved to the loading platform 7. Of.

Further, by releasing the brake means 37, when the loading platform 7 is raised and lowered by the lifting device, the locking bodies 23 and 28 and the spiral grooves 25 and 31 are moved along with the vertical movement of the loading platform 7. Since it slides relatively, the lifting / lowering body 41 freely rotates with respect to the support body 19 and moves back and forth, so that it does not support the lifting / lowering movement of the loading platform 7.

[0011]

【Example】

 An embodiment of the present invention will be described below with reference to the drawings. In FIG. 1, reference numeral 1 denotes a carrier body as a base body having wheels 3, and a carrier operating handle 5 is provided at a rear position thereof.

Reference numeral 6 denotes a pair of left and right luggage carrier supports that hold a luggage carrier 7 that is vertically movable and has a plurality of moving spheres 14 rotatably provided on the upper surface thereof. The supporting rods 6a and 6b are provided in a cross shape, and the midway portions of both the supporting rods 6a and 6b are pivotally supported by the connecting rod 8. The upper end of one of the supporting rods 6a is pivotally connected to the side surface of the luggage carrier 7, and the lower end is slidably fitted to a rail 10 provided on the side surface of the carrier body 1. The upper end of the other support rod 6b is slidably fitted to a rail 10a provided on the side surface of the luggage carrier 7, and the lower end is pivotally connected to the side surface of the carrier body 1.

Reference numeral 12 is for vertically swinging an elevating arm 13 whose one end is pivotally connected to the connecting rod 8 and the other end is pivotally connected to the carrier body 1 about the lower end thereof. A lifting jack is connected to the middle of the lifting arm 13. Therefore, the lifting arm 12 can be swung by the lifting jack 12 to lift and lower the loading platform 7 and fix it at an arbitrary height position.

Reference numeral 16 denotes a carrier support device for supporting the carrier 7, which is provided between the carrier 7 and the carrier body 1 and at four positions on the front, rear, left and right of the carrier 7. As shown in FIG. 2, each of the supporting devices 16 has a cylindrical support body 19 which is erected and fixed on the upper surface of the carrier body 1 by bolts 17, and the support body 19 has an opening on the upper surface. The insertion hole 20 is formed. Further, as shown in FIG. 3B, an insertion hole 21 is formed in the upper part of the support body 19 in the radial direction, and a spherical body 23 as a locking body is inserted into the insertion hole 21. It is inserted so as to project from the inner peripheral surface of the hole 20. A screw body 20a is screwed into the insertion hole 21 to prevent the spherical body 23 from falling off.

Reference numeral 22 denotes a cylindrical first elevating body that is rotatably and retractably fitted in the insertion hole 20 of the support body 19, and a spiral groove is formed on the outer peripheral surface of the first elevating body 22. 25 is formed, and a part of the spherical body 23 is engaged with the spiral groove 25. Therefore, when the loading platform 7 is moved up and down, the spherical body 23 slides in the spiral groove 25 so that the first lifting body 22 can move up and down while rotating. Further, an insertion hole 27 is formed in the upper portion of the first elevating body 22 similarly to the support body 19, and a spherical body 28 is fitted in the insertion hole 27 and a screw body 27a is screwed therein. .

Reference numeral 30 denotes a second lifting body fitted in the insertion hole 29 of the first lifting body 22 in a rotatable and retractable manner, and has a spiral groove 31 formed on the outer peripheral surface thereof. A part of the sphere 28 is engaged therewith. Therefore, the second elevating / lowering body 30 is movable up and down while rotating by the spherical body 23 sliding in the spiral groove 25. Further, a drum 35 as a brake body is attached to the upper end of the second lifting body 30 via a bolt 35a, and the drum 35 is fixed to a plate 36 attached to the lower surface of the cargo bed 7. The shaft 32 is rotatably supported by bearings 33 and 34. The spheres 23 and 28 may be provided in one place, respectively, or plural spheres may be provided along the spiral grooves 25 and 31. Further, the first lifting body 22 and the second lifting body 30 constitute a lifting body 41.

As shown in FIG. 3A, 37 is a brake shoe consisting of a belt body whose one end 37a is connected to an arm 38a swingable about a pivot 38, and the brake shoe 37 is It is wound around the drum 35 and the other end 37b is connected to the plate 36. Further, one end of the pulling wire 39 is connected to the tip of the arm 39, and the other end of the pulling wire 39 is connected to, for example, an operating lever (not shown) attached to the operating handle 5. By pulling the pulling wire 39 through the operating lever and swinging the arm 39, the brake shoe 37 can be pressed against the drum 35 and the drum 35 can be stopped. A brake device 40 is constituted by the brake shoe 37, the arm 39, the drum 35 and the like.

Reference numeral 42 denotes a bellows for protection, the lower end of which is connected to the support body 19 and the upper end of which is connected to the loading platform 7 side.

The embodiment of the present invention is configured as described above, and a case where a mold or the like 43 is moved and carried from the processing machine 45 by using a carrier will be described. First, the lifting jack 13 swings the lifting arm 13 upward to raise the loading platform 7, and the upper surface of the loading platform 7 (the upper surface of the spherical body 14) and the processing machine 45 on which the metal mold 43 is placed. Set to the same height as surface 45a. When the loading device 7 is lifted, if the brake device 40 is released, the first lifting / lowering body 22 ascends while rotating with respect to the support body 19, and the second lifting / lowering device is lifted with the lifting of the loading base 7. The body 30 rises while rotating with respect to the first lifting body 22.

When the loading platform 7 reaches a predetermined height, the operation of the lifting jack 12 is stopped and fixed at that height. Further, each pulling wire 39 is pulled through the operating lever provided on the carrier operating handle 5, and the brake shoe 37 is pressed against the drum 35 to prevent its rotation.

Further, when the molds 43 or the like placed on the mounting surface 45a of the processing machine 45 are moved to the loading platform 7, even if the molds 43 are loaded on the front part of the loading platform 7, each drum Since the rotation of 35 is blocked by the brake shoe 37, the first elevating body 22 and the second elevating body 30 do not descend, and the first elevating body 22 and the second elevating body 30 are securely fixed. It is possible. Therefore, although the load of the mold 43 or the like is applied to the load platform 7, the load of the load platform 7 is particularly received by the support device 16 on the front side, so that the support rods 6a, 6b, etc. constituting the lifting device are It does not bend, the loading platform 7 can be maintained horizontally, the loading platform 7 can be positioned reliably, and the mold 43 or the like can be easily moved to the loading platform 7 by using the rotation of the spherical body 14. be able to.

Further, when lowering the loading platform 7, the brake device 40 is released and the first lifting body 22 and the second lifting body 30 are allowed to rotate freely. The body 22 and the second lifting body 30 descend while rotating, the first lifting body 22 is housed in the support body 19, and the second lifting body 30 is housed in the first lifting body 22.

On the contrary to the above, when the molds 43 and the like placed on the loading platform 7 are moved to the loading surface 45a of the processing machine 45, the loading platform 7 and the loading surface 45a of the processing machine 45 are Are set to the same height and each brake device 40 is operated, the loading platform 7 can be supported at the set height regardless of the load of the mold 43 and the loading platform 7 can be tilted or raised. There is no. The present invention is not limited to the above-described embodiment. For example, in the above-described embodiment, the spiral grooves 25 and 31 are formed on the outer peripheral surfaces of the first and second elevating bodies 22 and 30, respectively. The grooves 25 and 31 are provided on the inner peripheral surfaces of the support body 19 and the first elevating body 22, respectively, and the spherical bodies 23 and 28 are provided on the outer peripheral surfaces of the first elevating body 22 and the second elevating body 30, respectively. good.

Moreover, the engagement body is not limited to the spherical bodies 23, 28, and may be of a construction that engages with a spiral groove such as a roller.

Further, it is also possible to attach the support body 19 to the loading platform 7 and to provide the second lifting body 30 and the brake device 40 on the transport vehicle body 1 side, and a breaking means for stopping the rotation of the drum 35. The belt body is not limited to the belt body. For example, the peripheral surface of the drum 35 and the breaking means may be engaged and recessed.

Further, in the above embodiment, the supporting devices 16 are provided on the front, rear, left and right sides of the loading platform 7, but the supporting devices 16 can be provided only on the front side of the loading platform 7 on which a load particularly acts. However, the number and position thereof can be set appropriately. Further, in the above embodiment, the lifting / lowering body 41 is composed of the first lifting / lowering body 22 and the second lifting / lowering body 30, but it may be a single body or a structure divided into three or more stages. There is no question about it.

Further, the present invention is not limited to a transport vehicle, and can be incorporated in a series of transport devices for transporting heavy objects such as molds, for example.

[0028]

[Effect of device]

 According to the present invention, a support body is fixed to one of the base body and the cargo bed, and the other is provided with an elevating body fitted to the support body so as to be vertically retractable and rotatable. A spiral groove is formed in either one of the support body and the lifting body, and the other is provided with a locking body that slidably engages with the spiral groove, and is fixed to the lifting body. Since a braking means is provided to prevent the rotation of the brake body, the heavy objects such as molds are moved from the processing machine to the loading platform, or the heavy objects such as molds are transferred from the loading platform to the processing machine. Even when a load such as a mold is applied to the platform during movement, it is possible to effectively prevent the platform from inclining and moving up and down, and maintain a predetermined state. As a result, heavy objects such as molds can be easily and quickly moved and placed on the bed, etc., and the work efficiency can be improved.

Further, since the engaging member is slidably engaged with the spiral groove and the braking means for preventing the rotation of the brake member fixed to the elevating body is provided, the elevating body can be moved at any position. It can be fixed, and the platform can be reliably positioned at any height position.

[Brief description of drawings]

FIG. 1 shows an embodiment of the present invention (a) is an overall perspective view,
(B) is a side view.

FIG. 2 is a sectional view of a supporting device.

FIG. 3 shows an embodiment of the present invention, in which (a) is a sectional plan view of a brake device and (b) is a sectional plan view of a support device.

FIG. 4 is a side view showing a conventional example.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Transport vehicle main body (base body), 7 ... loading platform, 19 ... support main body, 25, 31 ... spiral groove, 35 ... drum (brake body), 37 ...
Brake shoe (brake means), 41 ... Lifting body

Claims (2)

[Scope of utility model registration request] 1. A support device for an elevating and lowering platform in which a loading platform 7 is provided on a base body 1 so as to be able to move up and down through a lifting means. A supporting body 19 is fixed to one of the base body 1 and the loading platform 7, and On the other hand, an elevating body 41 that is fitted in the support body 19 in a vertical direction and is rotatably and rotatably fitted is provided,
A spiral groove is formed on one of the support body 19 and the lifting body 41.
25 and 31 are formed, and on the other side, locking bodies 23 and 28 slidably engaged with the spiral grooves 25 and 31 are provided, and the lifting body is also provided.
Braking means 37 for preventing rotation of a brake body 35 fixed to 41 is provided. 2. The lifting / lowering platform support device according to claim 1, wherein the support body 19, the lifting / lowering body 41, and the braking means 37 are provided at four positions on the front, rear, left, and right of the platform 7.