JPH0635055Y2 - Elevating mobile scaffolding - Google Patents

Description

[Detailed Description of the Invention] (Industrial field of application) The present invention is mainly used in construction work sites, etc., and its height can be easily and smoothly adjusted, and it is robust and excellent in stability. The present invention relates to an elevating type mobile scaffold suitable as a scaffold for indoor and outdoor construction.

(Prior Art) Conventionally, various types of lifting type movable scaffolds capable of height adjustment have been provided. For example, there is an automatic lifting scaffold described in Japanese Utility Model Laid-Open No. 60-157844. This includes a base plate, a lower support column provided with a winding drum that is attached to the base plate, is detachable, and is connected to a drive device via a split coupling, a work floor having a support member, and a support member. And an upper pillar that is fitted to support the work floor,
Each of the columns is fitted in a telescope type, and lifting rollers are provided on all columns except the lower column, and one end is fixed directly to the columns on the outer side of the upper column and is sequentially engaged with the lifting rollers of the outer columns. The other end is provided with a rope wound around the winding drum of the lower support column and locked.

There is also a workbench as described in Japanese Utility Model Laid-Open No. 58-1087. This is a workbench including a frame frame having casters, a work stage whose outer shape is substantially the same as that of the frame frame, and four pedestals for supporting the work stages on the frame frame in parallel with each other. The pedestal of the book is formed by two pairs of crossbars, and the cross angle of these two pairs of crossbars can be adjusted by a hydraulic piston,
This hydraulic piston is driven by a manual hydraulic pump installed on the work stage.

Further, there is an elevating device for a rotoring tower as described in Japanese Utility Model Laid-Open No. 63-4995. This has a bending part that is screwed with a horizontal screw rod in the middle part, and a supporting rod that bends outward in an openable and closable manner is provided with a vertical axis between an upper frame and a lower frame via a mounting part. It is configured to be rotatable with respect to.

Then, there is a vertical lifting type work platform as described in Japanese Utility Model Laid-Open No. 60-89354. This is because the workbench is attached to the front and rear of the carriage via a pair of lifting links, and the telescopic cylinders provided in each of the pair of lifting links cause the pair of lifting links to expand and contract vertically to raise and lower the workbench. It is configured to do.

(Problems to be solved by the invention) However, the above-mentioned elevating type mobile scaffolding has a relatively complicated structure and becomes large, and the elevating type mobile scaffolding itself becomes large, and the driving type scaffolding is large. There were some problems such as the need to supply electricity to the hoist.

Further, the workbench as described above has a relatively simple structure,
Although it can be configured to be lightweight, there are some drawbacks such as insufficient robustness and stability of the entire workbench and insufficient stability of the operator.

Further, in the rolling tower lifting device as described above, since the lifting force of the lifting device (particularly, the lifting force) acts on a part of the upper frame, the entire upper frame is stably lifted in parallel with the lower frame. Not only was it difficult to raise, but it was difficult to raise and lower smoothly.

And, in the vertical lifting type aerial work vehicle as described above, unless a pair of lifting links can be lifted and lowered at the same speed at the same time,
There was a problem that the workbench could not be maintained parallel to the trolley. In addition, a pair of lifting links and a pair of telescopic cylinders are required, which makes the structure relatively complicated and large.

(Means for Solving the Problems) Therefore, the present invention aims to solve the above-mentioned problems and the like, and has a simple structure and is small in size, lightweight, compact, and excellent in robustness, stability, mobility, etc., It was devised to provide an elevating type mobile scaffolding with excellent parallelism, stability, smoothness, etc. when elevating and lowering the elevating frame. Specifically, it has four pipe-shaped support rods 1. It has a main body frame A formed in a substantially rectangular frame shape, and four pipe-shaped support rods 10 slidably inserted in the support rods 1 of the main body frame A, and is vertically movable with respect to the main body frame A. It is equipped with an elevating frame B that is slidably mounted in a direction and an elevating mechanism S that elevates and lowers the elevating frame B manually. The main body frame A and the elevating frame B are bent at substantially the center in the longitudinal direction. Free and pivoted at each intersection It is interlocking via a pair of pantograph arms 30 and 31, one of the pantograph arms 3
In 0, the lower end part is pivotally attached to the lower part of the front frame of the main body frame A, and the upper end part thereof is pivotally attached to the upper part of the front frame of the elevating frame B, and the other panter arm 31 has the lower end part of the main body frame. A A movable rod that is movably arranged in the front-rear direction along a pair of guide rails 25 arranged on the lower left and right sides.
It is pivotally attached to 21 and its upper end is the lifting frame B
The movable rod 21 is mounted so as to be movable in the front-rear direction along a pair of guide rails 26 disposed on the left and right of the upper part, and a roller 24 is rotatably supported by both ends of the movable rod 21. The pair of groove-shaped guide rails 25, which are arranged on the lower left and right sides of the main body frame A and whose open portions are opposed to each other, are configured to be rollable, and the other panter arm 31 has its upper end. Roller 24 on the left side
Is rotatably rotatably supported, and the rollers 24 are rollable in a pair of groove-shaped guide rails 26 which are arranged on the left and right of the upper part of the elevating frame B and whose open portions face each other. The movable rod 21 has a tip end of a screw rod 22 for raising and lowering screwed to the moving rod 21.
The base end waving part is rotatably attached to a fixed rod 20 fixed to the lower part of the front part of the main body frame A.
By the movement of the movable rod 21 caused by the rotation of 22, the pair of panter arms 30, 31 are vertically expanded and contracted, so that the elevating frame B is vertically movable with respect to the main body frame A.

In addition, by solving the above-mentioned difficulties, the structure is simplified, and it is small, lightweight, compact, and yet robust, stable, and
A substantially rectangular parallelepiped equipped with four pipe-shaped support rods 1 in order to provide an elevating type mobile scaffolding that is excellent in maneuverability and has excellent parallelism, stability, smoothness, etc. when elevating and lowering the elevating frame. A main body frame A formed in a frame shape and four pipe-shaped support rods 10 slidably inserted in the support rods 1 of the main body frame A are provided, and the main frame A is vertically arranged with respect to the main body frame A. An elevating frame B slidably mounted,
A lifting mechanism S for manually lifting the lifting frame B
And the main body frame A and the elevating frame B are
The center of the longitudinal direction is bendable, and the intersecting portions are connected to each other through a pair of panter arms 30 and 31, and the lower end portion of one of the panter arms 30 is a front end of the main body frame A. The fixed rod 20 provided at the lower portion is pivotally attached, and the upper end portion thereof is pivotally attached to the upper part of the front frame of the elevating frame B, and the other panter arm 31 has the roller 24 at the lower end side and the upper end side. This roller is rotatably supported by a roller
A pair of groove-shaped guide rails 25, 26 are provided in parallel on the lower left and right of the main body frame A and on the upper left and right of the upper and lower frames B, and the open portions thereof are opposed to each other.
Each of the panter arms 31 is configured to be rotatable, and the upper and lower end portions of the other panter arm 31 are mounted so as to be movable in the front-rear direction along the guide rails 25 and 26. A movable rod 29 is attached to a substantially central portion, and a hydraulic jack 27 is interposed between the movable rod 29 and the fixed rod 20, and the vertical movement of the movable rod 29 by the operation of the hydraulic jack 27 causes the lifting frame B to move up and down with respect to the main body frame A. We adopted a means to make it movable up and down.

(Operation) In the elevating type movable scaffold R of the present invention, however, in the elevating frame B, the four pipe-shaped supporting rods 10 of the elevating frame B slide in the four pipe-shaped supporting rods 1 of the main body frame A. It is freely inserted, mounted so as to be slidable in the vertical direction with respect to the main body frame A, and is connected to the main body frame A via a pair of panter arms 30 and 31. A pair of groove-shaped guide rails 25 are provided on the lower left and right sides of the main body frame A so that the open portions face each other, and a pair of groove-shaped guide rails 25 are provided on the upper and left upper portions of the elevating frame B so that the open portions face each other. A guide rail 26 is provided. Then, the lower end portion of one of the panter arms 30 is pivotally attached to the lower part of the front frame of the main body frame A, and the upper end portion thereof is pivotally attached to the upper part of the front arm of the elevating arm B. The lower end portion is pivotally attached to the movable rod 21 which is arranged so as to be movable in the front-rear direction along the guide rail 25 of A, and the upper end portion is attached to the guide rail 26 of the elevating frame B. Further, the movable rod 21 has rollers 24 rotatably supported at both end portions thereof, which can roll within a guide rail 25 at the lower part of the main body frame A, and can be rotated to the left and right upper end portions of the other panter arm 31. The rotatably supported roller 24 can roll in the guide rail 26 above the lifting frame B.
In addition, the elevating screw rod 22 is rotatably attached to the fixed rod 20 whose tip end is screwed into the movable rod 21, and whose base end is attached to the front frame lower part of the main body frame A. The movable rod 21 is moved by the rotation of the lifting screw rod 22, and the pair of panter arms 30 and 31 are vertically expanded and contracted, so that the lifting frame B moves up and down with respect to the main body frame A. That is, the movable rod 21 freely separates and approaches the fixed rod 20 by the forward and reverse rotations of the lifting screw rod 22, and the other panter arm 31
As the lower end portion of the one panter arm 30 approaches the lower end portion of the one panter arm 30, the elevating frame B gradually rises horizontally with respect to the main body frame A, and the lower end portion of the other panter arm 31 lowers the one panter arm 30. As you move away from
The elevating frame B gradually descends horizontally with respect to the main body frame A. At this time, the lower end portion of the other panter arm 31 is a pair of guide rails arranged on the lower left and right sides of the main body frame A.
Along with the movable rod 21, the upper end portion of the other panter arm 31 moves in the front-rear direction along the pair of guide rails 26 disposed on the left and right above the elevating frame B.

Further, in the elevating type movable scaffold R of the present invention, the elevating frame B has its four pipe-shaped support rods 10 slidably inserted into the four pipe-shaped support rods 1 of the main body frame A. It is mounted so as to be slidable in the vertical direction with respect to the main body frame A, and is further connected to the main body frame A via a pair of panter arms 30 and 31. A pair of groove-shaped guide rails 25 are provided on the lower left and right sides of the main body frame A so that the open portions face each other, and a pair of groove-shaped guide rails 25 are provided on the upper and left upper portions of the elevating frame B so that the open portions face each other. A guide rail 26 is provided. Then, the lower end portion of one of the panter arms 30 is pivotally attached to the fixed rod 20 provided at the lower part of the front frame of the main body frame A, the upper end portion thereof is pivotally attached to the upper part of the front frame of the elevating frame B, and the other panter arm 30 is provided. The arm 31 has rollers on its lower end side and upper end side.
24 is rotatably supported so that the roller 24 can roll inside the guide rails 25 and 26 of the main body frame A and the elevating frame B, respectively, and the other panter arm 31 includes the main body frame A and the elevating frame B. Upper and lower end portions thereof are mounted so as to be movable in the front-rear direction along the guide rails 25 and 26 of the above, and the hydraulic rod 27 is attached to the movable rod 29 and the fixed rod 20 attached to the substantially central portion of the other panter arm 31 in the longitudinal direction. The moving rod 29 moves up and down by the operation of the hydraulic jack 27, and the elevating frame B moves up and down with respect to the main body frame A. That is, the movable rod 29 approaches (moves up and down) with respect to the fixed rod 20 by the operation of the hydraulic jack 27,
As the movable rod 29 moves away from the fixed rod 20, the lower end portion of the other panter arm 31 approaches the lower end portion of the one panter arm 30, and the upper end portion of the other panter arm 31 becomes the upper end portion of the one panter arm 30. And the elevating frame B gradually rises horizontally with respect to the main body frame A. Further, as the movable rod 29 approaches the fixed rod 20, the lower end portion of the other panter arm 31 separates from the lower end portion of the one panter arm 30, and the upper end portion of the other panter arm 31 of the one panter arm 30. The lift frame B gradually descends horizontally with respect to the main body frame A, away from the upper end portion.

(Example) Hereinafter, the present invention will be described with reference to illustrated examples.

In the figure, R indicates the lifting movable scaffold of the present invention. The lifting movable scaffold R includes a body frame A, a lifting frame B slidably mounted on the body frame A in the vertical direction, and the lifting frame. A pair of left and right handrails mounted on the upper part of B
And a ladder D attached to the left and right handrails C, an outrigger E attached to the support rod 1 of the main body frame A, and a cloth plate F attached to the upper part of the elevating frame B. The main body frame A and the elevating frame B are linked by an elevating mechanism S1, and the elevating frame B is configured to be movable up and down with respect to the main body frame A by the operation of the elevating mechanism S.

The main body frame A is, for example, four round rod-shaped support rods 1 and a plurality of connecting rods 2 which are horizontally crossed between the upper end portion and the lower end portion of the adjacent rod rods 1 and which connect the adjacent rod rods 1 to each other. Are formed in a substantially rectangular frame shape, and further, adjacent support rods 1 or adjacent connecting rods 2 are connected and reinforced by a plurality of reinforcing rods 3. Further, casters 4 with brakes are appropriately attached to the lower end portions of the support rods 1, respectively.

The elevating frame B includes four round pipe-shaped strut rods 10 slidably insertable into the strut rods 1 of the main body frame A, and the upper end portions of the adjoining strut rods 10 which are horizontally crossed to each other, and the adjoining strut rods 1
It is composed of a plurality of connecting rods 11 for connecting each other.

The lifting mechanism S shown in FIG. 1 to FIG. 6 includes a fixed rod 20 fixed to the lower part of the front part of the main body frame A, and a pair of guide rails 25 arranged on the left and right lower parts of the main body frame A. The movable rod 21 that is movable in any direction, the tip end of which is screwed into the movable rod 21, and the base end of which is the fixed rod 20.
The screw rod 22 for lifting and lowering is attached to the shaft 23, the handle 23 is pivotally attached to the base end of the screw rod 22, and the substantially central portion in the longitudinal direction is bendable, and the respective intersecting portions are pivotable. It consists of a pair of panter arms 30 and 31 to be worn.

Rollers 24 are rotatably supported on both ends of the movable rod 21, and the rollers 24 are arranged in parallel to the lower left and right of the main body frame A so that their open portions face each other. Are formed so as to be rollable in the pair of groove-shaped guide rails 25. That is, the moving rod 21
Is configured to move smoothly in the guide rail 25 in the front-rear direction, and the movement of the moving rod 21 in the left-right direction and the vertical direction is restricted by the pair of guide rails 25.

The elevating screw rods 22 are provided with bearings 22a at their base end portions which are attached to the fixed rod 20 so as to be rotatable in forward and reverse directions, so that the elevating screw rods 22 can be easily rotated by a slight force. In consideration of this, a male screw portion formed on the outer peripheral surface of the movable rod body 21 is screwed into a female screw portion formed on the movable rod 21, and a handle 23 is detachably attached to the base end thereof. .

The pair of panter arms 30, 31 pivotally attach the lower end portions of the upper connecting rods 30b, 31b to the upper end portions of the lower connecting rods 30a, 31a via a pivoting pin 32 so that they can swing. The lower end of the lower connecting rod 30a is pivotally attached to the lower part of the front frame of the main body frame A via a pivot pin 32, and the upper end of the upper connecting rod 30b of one panter arm 30 is pivotally attached to the upper part of the elevating frame B front frame. Pivoted via pin 32 and also the other panto arm
The lower connecting rod 31a of 31 has a lower end portion swingably attached to the moving rod 21, and the upper connecting rod 31 of the other panter arm 31.
The upper end portion b is attached so as to be movable in the front-rear direction along a pair of guide rails 26 arranged on the left and right of the upper part of the elevating frame B. That is, the roller 24 is rotatably supported on the upper left and right sides of the upper connecting rod 31b of the other panter arm 31, and the roller 24 is
It is formed so as to be rollable in a pair of groove-shaped guide rails 26 which are arranged in parallel to the upper left and right of the elevating frame B and whose open portions are opposed to each other, and the upper part of the other panter arm 31. Guide rail 26 at the upper end of the connecting rod 31b
It moves smoothly in the front-back direction and the upper connecting rod
31b is configured so that the movement of the upper end portion in the horizontal direction or the vertical direction is restricted. Furthermore, a pair of panto arms 30,3
The lower connecting rods 30a and 31a and the upper connecting rods 30b and 31b are pivotally attached to each other through pivot pins 32 at their substantially central portions in the longitudinal direction, and are moved by rotation of the lifting screw rod 22. Rod
Along with the operation of separating and approaching the fixed rod 20 of 21, the pair of panter arms 30 and 31 operate so that the elevating frame B can move up and down with respect to the main body frame A. Incidentally, reference numerals 30c and 31c in the figure are connecting rods which are laterally laid to reinforce the panter arms 30 and 31 themselves.

Further, in the elevating mechanism S shown in FIGS. 7 to 11, the substantially central portion in the longitudinal direction is bendable, and the respective intersecting portions are pivot pins.
A pair of panter arms 30, 31 pivotally attached via 32, a fixed rod 20 pivotally attached to the lower end portion of one panter arm 30 and attached to the lower part of the front frame of the main body frame A, and the other panter arm It comprises a movable rod 29 attached to a substantially central portion of the longitudinal direction 31, and a hydraulic jack 27 interposed between the fixed rod 20 and the movable rod 29.

The fixed rod 20 is a lower left and right connecting rod of one of the panter arms 30.
The moving rod 29 is arranged at the lower end portion of 30a so as to be laterally bridged, and the left and right lower connecting rods 31 of the other panter arm 31 are connected to each other.
It is arranged so as to be laterally bridged between a and a pivotally connected portion of the upper connecting rod 31b.

The hydraulic jack 27 includes a jack main body 27a attached to the movable rod 29, and a tip end portion thereof attached to the fixed rod 20.
An operating rod 27b slidable with respect to the jack main body 27a, a hydraulic pump 27c attached to the movable rod 29 and connected to the jack main body 27a via a hose, and swingably attached to the hydraulic pump 27c. It is composed of an operating lever 28 that allows the operating rod 27b to be moved back and forth by the oil in the pump 27c. The hydraulic pump 27c is also provided with a hydraulic relief valve. Further, the operating lever 28 may be formed so that the auxiliary handle can be detachably attached thereto, and the operating lever 28 can be rocked by the operation of the auxiliary handle. That is, the operating lever 28 can be formed small enough not to interfere with it, and the operating lever 28 can be easily operated with a slight force.

The pair of panter arms 30, 31 pivotally attach the lower end portions of the upper connecting rods 30b, 31b to the upper end portions of the lower connecting rods 30a, 31a via a pivoting pin 32 so that they can swing. The lower end of the lower connecting rod 30a is pivotally attached to both ends of the fixed rod 20 attached to the lower part of the front frame of the body frame A, and the upper end of the upper connecting rod 30b of one panter arm 30 is placed on the upper part of the lifting frame B. The lower end of the lower connecting rod 31a of the other panter arm 31 is pivotally attached via a pivot pin 32, and is movable in the front-rear direction along a pair of guide rails 25 disposed on the left and right sides of the lower portion of the main body frame A. In addition to the above, the upper end of the upper connecting rod 31b of the other panter arm 31 is attached so as to be movable in the front-rear direction along a pair of guide rails 26 disposed on the left and right of the upper part of the elevating frame B. ing. That is, the lower connecting rod of the other panter arm 31
A roller 24 is rotatably supported by the lower end side of 31a and the upper end side of the upper connecting rod 31b.
However, a pair of groove-shaped guide rails 25 and 26, which are arranged in parallel to the lower left and right of the main body frame A and to the upper left and right of the upper and lower frames B, respectively, and whose open portions face each other, can roll freely. Placed on the other panto arm 31
The lower connecting rod 31a and the upper connecting rod 31b are configured to smoothly move in the front-rear direction along the guide rails 25 and 26 and to be restricted from moving in the left-right direction or the vertical direction. is there. Furthermore, a pair of panto arm 3
The lower connecting rods 30a, 31a of 0, 31 and the upper connecting rods 30b, 31b are pivotally attached to each other at a substantially central portion in the longitudinal direction via pivot pins 32, and are moved by the operation of the hydraulic jack 27. A pair of panter arms 30 and 31 operate so that the elevating frame B can move up and down relative to the main body frame A as the rod 29 moves away from the fixed rod 20.

The handrails C shown in FIGS. 1 to 4 are arranged on the left and right side portions of the elevating frame B in an upright manner. Specifically, the pipe material is appropriately bent into a substantially U shape, A vertical portion of the handrail frame 40 is composed of a handrail frame 40 formed at both ends thereof so that it can be inserted into the support rod 10 of the elevating frame B, and a reinforcing rod 41 laterally arranged on the handrail frame 40. A substantially C-shaped locking hook 42 that enables the safety chain 43 to be detachably locked is fixed to the upper portion, and insertion cylinders 44 for mounting the ladder D are also fixed. The handrails C shown in FIGS. 7 to 10 are arranged on the left and right side portions and the front and rear portions of the elevating frame B respectively, and the handrail frames 40 disposed on the left and right side portions of the elevating frame B are both end portions thereof. Is formed so that it can be inserted into the support rod 10 of the lifting frame B, and the lifting frame B
Both ends of the handrail frame 40 arranged in the front and rear portions of the above are formed so that they can be attached to the connecting rod 11 of the elevating frame B. That is, the upper part of the elevating frame B is surrounded by a pair of handrails C and a pair of safety chains 43 in a planar rectangular shape with a simple structure, and safety such as worker's fall prevention is sufficiently considered. .

The ladder D shown in FIGS. 1 to 3 has a pair of left and right vertical rods 50.
And a plurality of horizontal rods 51 horizontally arranged between the vertical rods 50, and an insertion protrusion 52 which is detachably insertable into the insertion cylinder 44 of the handrail C is fixed to the upper end portion of the vertical rod 50. Has been done. still,
In the figure, 53 is a pair of ladder pressing pieces fixed to the upper connecting rod 2 of the main body frame A. The ladder pressing pieces 53 are arranged so as to hold the left and right vertical rods 50 of the ladder D from both sides. There is. The upper end of the vertical rod 50 of the ladder D shown in FIGS. 7 to 9 is fixed to the connecting rod 11 of the elevating frame B, and the ladder pressing piece 53 holds one of the vertical rods 50 of the ladder D. It is arranged to be held from the outside.

The outrigger E shown in FIG. 1 is attached to each of the support rods 1 of the main body frame A through the clamp metal fittings 60, and when not in use, the main body frame A is not disturbed.
Rock it so that it approaches. In addition, the outrigger E shown in FIG. 7 should also not interfere when not in use,
The main body frame A is pivotally attached to the lower part of the support rod 1 so as to be swingable in the horizontal direction.

The cloth plate F is configured such that locking hooks 70 provided at both end portions are locked to the connecting rods 11 of the lifting frame B to lift the lifting frame B.
Erected in.

By the way, the specific configuration of the main body frame A is the shape, size, material, and the specific configuration, shape, size of the elevating frame B,
Material, concrete configuration of handrail C, shape, dimensions, material, ladder D
Specific configuration, shape, size, material of outrigger E, specific configuration, shape, size of outrigger E, attachment means to main body frame A, specific shape of fixed rod 20, movable rod 21, lifting screw rod 22, hydraulic jack The specific configuration and shape of 27, and the specific configuration and shape of the pair of panther arms 30 and 31 are not limited to those in the illustrated example, and can be set freely as appropriate.

The present invention is configured as described above. Next, an example of its use will be described. First, the elevating and moving scaffold R is moved to a desired position, and the outrigger E is opened and set.
Then, the handle 23 is turned or the actuating lever 28 is repeatedly oscillated to actuate the hydraulic jack 27 to raise the elevating frame B to a desired height. Next, the worker uses the connecting rod 2 of the main body frame A and the ladder D to climb up the elevating type movable scaffold R and ride on the cloth plate F to perform an appropriate work. Then, at the end of the work, the handle 23 is turned or the hydraulic relief valve of the hydraulic jack 27 is opened to lower the elevating frame B.

(Effects of the Invention) Therefore, the present invention is such that the main body frame A formed in the shape of a substantially rectangular frame provided with four pipe-shaped support rods 1 and the support rod 1 of the main body frame A are slidable. An elevating frame B which has four pipe-shaped supporting rods 10 to be inserted, and is vertically slidably mounted on the main body frame A,
A lifting mechanism S for manually lifting the lifting frame B
And the main body frame A and the elevating frame B are
The center in the longitudinal direction is bendable, and the respective intersecting portions are connected to each other via a pair of panter arms 30 and 31, which are pivotally attached,
The lower end portion of one of the panter arms 30 is pivotally attached to the lower part of the front frame of the main body frame A, and the upper end portion thereof is pivotally attached to the upper part of the front frame of the elevating frame B.
A lower end portion of 31 is pivotally attached to a movable rod 21 which is arranged so as to be movable in the front-rear direction along a pair of guide rails 25 disposed on the left and right of the lower portion of the main body frame A, and an upper end portion thereof is an elevating frame. B is mounted so as to be movable in the front-rear direction along a pair of guide rails 26 arranged on the left and right sides of the upper part of the B. The movable rod 21 has rollers 24 rotatably supported at both ends thereof. , The left and right sides of the lower portion of the main body frame A, and the open portions thereof are configured to be rollable in a pair of groove-shaped guide rails 25, and the other panter arm 31 is A pair of groove-shaped guide rails in which a roller 24 is rotatably supported on the left and right side portions of the upper end, and the rollers 24 are arranged on the upper and left sides of the upper part of the elevating frame B and their open portions face each other. Roll freely in 26 The movable rod 21 has a distal end of a lifting screw rod 22 screwed into the movable rod 21, and a proximal end of the lifting screw rod 22 is fixed to a lower portion of the front frame of the main body frame A. Is rotatably attached to the fixed rod 20 and the pair of panter arms 30, 31 is vertically expanded and contracted by the movement of the movable rod 21 by the rotation of the lifting screw rod 22, and the lifting frame B is moved relative to the main body frame A. Since it is configured so that it can be lifted and lowered, it is possible to provide a compact, lightweight, and compact lifting mobile scaffold R with a simple structure, and the robustness of the lifting mobile scaffold R itself, the lifting mobile scaffold R
The overall stability, the levelness, stability, and smoothness when the elevating frame B is moved up and down, and the mobility of the elevating and moving scaffold R itself are excellent. Further, the lifting work of the lifting frame B can be easily and reliably performed only by rotating the lifting screw rod 22, and the lifting motion of the lifting frame B can be smoothly and stably performed with a small force. Therefore, this type of lifting / lowering movable scaffold R is very easy to handle.

The main body frame A and the elevating frame B are connected to each other through a pair of panter arms 30, 31 each of which is bendable at its substantially longitudinal center and pivotally attached at each intersecting portion. , Its lower end is pivotally attached to the lower part of the front part of the main body frame A, and its upper end part is pivotally attached to the upper part of the front part of the elevating frame B, and the other panter arm 31 is
The lower end portion is pivotally attached to a movable rod 21 which is movably arranged in the front-rear direction along a pair of guide rails 25 provided on the lower left and right sides of the main body frame A, and the upper end portion thereof is on the upper left and right portions of the elevating frame B. A pair of guide rails arranged in
Since it is mounted so as to be movable in the front-rear direction along with, the length of the pair of panter arms 430, 31 can be set to be considerably long, and the lifting frame B can be raised to a considerable height. Become. Moreover, it is possible to raise and lower the elevating frame B smoothly and in a well-balanced manner with a slight force.

In particular, in the movable rod 21, rollers 24 are rotatably supported at both end portions thereof, and the rollers 24 are disposed at the lower left and right of the main body frame A and the open portions thereof are opposed to each other. The pair of groove-shaped guide rails 25 are configured to be rollable, and the other panter arm 31 has a roller 24 rotatably supported on the left and right sides of the upper end thereof. The movable rods 21 are arranged along the guide rails 25 so that the movable rods 21 can be rolled in a pair of groove-shaped guide rails 26 arranged on the left and right of the upper part and with their open portions facing each other. In addition to being able to move smoothly in the front-rear direction, it becomes possible to reliably regulate the movement of the moving rod 21 in the left-right direction and the up-down direction, and the upper end portion of the other panter arm 31 extends along the guide rail 26. Back and forth Together we will be able to move in smoothly, so the movement of the horizontal direction and the vertical direction can be reliably restricted.

Further, the movable rod 21 has a distal end of a raising / lowering screw rod 22 screwed into it, and a proximal end of the raising / lowering screw rod 22 is fixed to a lower portion of the front frame of the main body frame A. A pair of panter arms 30 and 31 are vertically expanded and contracted by the movement of the movable rod 21 by the rotation of the elevating screw rod 22 and the elevating frame B is elevating with respect to the main body frame A. Since it is configured as described above, anyone can easily and reliably raise and lower the elevating frame B by only rotating the elevating screw rod 22. Moreover, for example, even when a sudden strong external force is applied to the lifting frame B in a raised state and the lifting mechanism S is damaged, there is no possibility that the lifting frame B will suddenly drop, and work on the lifting frame B The person's safety can be maintained sufficiently.

The present invention also includes a main body frame A formed in a substantially rectangular frame shape having four pipe-shaped support rods 1, and four slidably inserted into the support rods 1 of the main body frame A. In addition to the pipe-shaped support rod 10, the lifting frame B is slidably mounted on the main body frame A in the vertical direction, and the lifting mechanism S for manually lifting the lifting frame B. The main body frame A and the elevating frame B are connected to each other through a pair of panter arms 30 and 31 whose longitudinal centers are bendable and whose intersections are pivotally mounted.
The lower end of the one panto arm 30 is pivotally attached to the fixed rod 20 provided at the lower part of the front frame of the main body frame A, and
The upper end is pivotally attached to the upper part of the front of the lifting frame B,
The other panter arm 31 has a roller 24 rotatably supported on the lower end side and the upper end side thereof.
However, it is rollable inside a pair of groove-shaped guide rails 25 and 26, which are arranged in parallel to the lower left and right of the main body frame A and to the upper left and right of the upper and lower frames B, respectively, and whose open portions face each other. The upper and lower end portions of the other panter arm 31 are mounted so as to be movable in the front-rear direction along the guide rails 25 and 26, and the movable rod 29 is attached to the substantially central portion in the longitudinal direction of the other panter arm 31. A hydraulic jack 27 is mounted on the movable rod 29 and the fixed rod 20, and the vertical movement of the movable rod 29 caused by the movement of the hydraulic jack 27 allows the elevating frame B to move up and down relative to the main body frame A. As a result, it is possible to provide a compact, lightweight, compact elevating type moving scaffold R with a simple structure.
Moreover, the robustness of the lifting mobile scaffold R itself, the stability of the entire lifting mobile scaffold R, the levelness when the lifting frame B is lifted, the stability, the smoothness, the mobility of the lifting mobile scaffold R itself, etc. It will be excellent. Further, the lifting work of the lifting frame B can be easily and surely performed only by operating the hydraulic jack 27, and the lifting motion of the lifting frame B can be smoothly and stably performed with a small force. It is very easy to handle as a kind of lifting mobile scaffold R.

In particular, the main body frame A and the elevating frame B are connected to each other through a pair of panter arms 30, 31 each of which is bendable at the approximate center in the longitudinal direction and pivotally attached to each intersecting portion. , Its lower end is pivotally attached to a fixed rod 20 provided at the lower part of the front part of the main body frame A, and its upper end part is pivotally attached to the upper part of the front part of the elevating frame B, and the other panter arm 31 has its lower end part. A roller 24 is rotatably supported by the side portion and the upper end side portion. The roller 24 is arranged in parallel to the lower left and right of the main body frame A and the upper left and right of the elevating frame B, and their open portions face each other. The pair of groove-shaped guide rails 25 and 26 arranged in such a manner as to be respectively rollable, and the upper and lower end portions of the other panter arm 31 are movable in the front-rear direction along the guide rails 25 and 26. Because it is installed so that A pair of pantograph arm 3
The length of 0, 31 can be set to be considerably long, and the lifting frame B can be raised to a considerable height. Moreover, the lower end portion and the upper end portion of the other panter arm 31 can move smoothly in the front-rear direction along the guide rails 25 and 26, and the movement in the left-right direction or the up-down direction can be reliably regulated. As a result, the entire lifting frame B can be lifted and lowered smoothly with a slight force in a well-balanced manner.

Further, a moving rod 29 is attached to a substantially central portion in the longitudinal direction of the other panter arm 31, and a hydraulic jack 27 is interposed between the moving rod 29 and the fixed rod 20, and the vertical movement of the moving rod 29 by the operation of the hydraulic jack 27 is performed. Since the elevating frame B is movable up and down with respect to the main body frame A, the elevating frame B can be stably operated only by operating the hydraulic jack 27 (swing operation of the operating lever 28 or opening / closing operation of the hydraulic relief valve). You will be able to raise and lower. Moreover, for example, an unexpectedly strong external force is applied to the ascending / descending frame B,
Even when the elevating mechanism S is damaged, the elevating frame B is not likely to drop suddenly, and the safety of the operator on the elevating frame B can be sufficiently maintained.

[Brief description of drawings]

The drawings illustrate the present invention, with FIG. 1 being a perspective view and FIG.
The figure is a side view, FIG. 3 is a front view, FIG. 4 is a plan view, FIG. 5 is a cross-sectional plan view, and FIG. 6 is a cross-sectional plan view showing a fixed rod and a movable rod portion of an elevating mechanism. FIG. 11 shows another embodiment, FIG. 7 is a perspective view, FIG. 8 is a side view, FIG. 9 is a front view, FIG. 10 is a plan view, and FIG. 11 is a vertical sectional side view showing a lifting mechanism. Is. R: Lifting and moving scaffolding, A: Main body frame, 1 ... Support rod, 2 ... Connecting rod, 3
…… Reinforcing rod, 4 …… Caster, B …… Lift frame, 10 …… Stand rod, 11 …… Coupling rod, S …… Lift mechanism, 20 …… Fixed rod, 21 …… Movable rod, 22
...... Lifting screw rod, 22a …… Bearing, 23 …… Handle, 24 …… Roller, 25 …… Guide rail, 26 …… Guide rail, 27 …… Hydraulic jack, 27a …… Jack body, 27b …… Rod, 27c …… hydraulic pump, 28 …… actuating lever, 29 …… moving rod, 30 …… panter arm, 30a ……
Lower connecting rod, 30b …… Upper connecting rod, 30c …… Connecting rod, 31…
… Panta arm, 31a …… Lower connecting rod, 31b …… Upper connecting rod, 31c …… Connecting rod, 32 …… Pivoting pin, C …… Handrail, 40 …… Handrail frame, 41 …… Reinforcing rod, 42… … Locking hook, 43 …… Safety chain, 44 …… Insert cylinder, D …… Ladder, 50 …… Vertical rod, 51 …… Horizontal rod, 52 …… Insertion protrusion, 53 …… Ladder retainer piece, E …… Outrigger, 60 …… Clamp metal fitting, F …… Cloth plate, 70 …… Locking hook.

 ─────────────────────────────────────────────────── ───Continued from the front page (56) References Microfilm (JP, U) of the detailed description and drawings attached to the application for Japanese Patent Application No. 58-180235 (No. 60-89354). ) Microfilm (JP, U) Jpn. App. No. 60-54795 (Jpn. Shokai) which photographed the contents of the specification and drawings attached to the application for Jpn. App. No. 61-25501 (Jun. 63-4995) No. 61-170658) Microfilm (JP, U) filming the contents and drawings attached to the application

Claims (2)

[Scope of utility model registration request] 1. A main body frame formed in a substantially rectangular frame shape having four pipe-shaped support rods, and four pipe-shaped support rods slidably inserted into the support rods of the main body frame. And a lifting frame that is vertically slidably attached to the body frame, and a lifting mechanism that manually moves the lifting frame up and down. The center of the panto arm is connected via a pair of panter arms, each of which is bendable at its substantially center and each of which intersects with each other, and the lower end of one panto arm is pivotally attached to the lower part of the front part of the main body frame. The upper end of the panter arm is pivotally attached to the upper part of the front of the elevating frame, and the other panter arm has its lower end movably arranged in the front-rear direction along a pair of guide rails arranged on the left and right of the lower part of the main body frame. It is pivotally attached to the moving rod, and its upper end is mounted so as to be movable in the front-rear direction along a pair of guide rails arranged on the left and right of the upper and lower parts of the elevating frame. The rollers are movably supported, and the rollers are configured to be rollable in a pair of groove-shaped guide rails which are arranged on the left and right sides of the lower portion of the main body frame and whose open portions face each other. The rollers of the pantograph arm are rotatably supported on the left and right sides of the upper end of the panter arm, and the rollers are arranged on the left and right of the upper part of the elevating frame and the pair of grooves are arranged so that their open parts face each other. The guide rod is configured so that it can roll freely, the tip of the lifting screw rod is screwed onto the moving rod, and the base end of the lifting screw rod is in front of the main frame. Firm at the bottom It is rotatably attached to a fixed rod, and is constructed so that the pair of panter arms expands and contracts vertically by the movement of the movable rod by the rotation of the lifting screw rod, and the lifting frame can move up and down with respect to the main body frame. A lifting mobile scaffold characterized by the above. 2. A main body frame formed into a substantially rectangular frame shape having four pipe-shaped support rods, and four pipe-shaped support rods slidably inserted into the support rods of the main body frame. And a lifting frame that is vertically slidably attached to the body frame, and a lifting mechanism that manually moves the lifting frame up and down. It is connected via a pair of panter arms, each of which has a substantially bendable center and pivotally attached to each intersecting part. One of the panter arms is pivoted at its lower end to a fixed rod provided at the lower part of the front frame of the main body frame. The upper end portion of the panter arm is pivotally attached to the upper part of the front frame of the elevating frame, and the other panter arm is rotatably supported by its lower end side and upper end side. Body frame The pair of left and right lower parts and the left and right upper part of the lifting frame are arranged in parallel with each other and are configured to be rollable in a pair of groove-shaped guide rails arranged so that their open portions face each other. The upper and lower ends of the arm are mounted so as to be movable in the front-rear direction along the guide rail, the moving rod is attached to the center of the other panter arm in the longitudinal direction, and a hydraulic jack is interposed between the moving rod and the fixed rod. At the most, an up-and-down moving scaffolding characterized in that the up-and-down frame can be moved up and down with respect to the main body frame by the vertical movement of the moving rod by the operation of the hydraulic jack.