KR101788174B1 - Multi-stage lifter - Google Patents

Abstract

In the present invention, a plurality of stages of lifter bodies, each of which is constructed in the form of a pylon, are mounted and lifted by the lifting screw shafts, and the lifter body is raised or lowered in order to maintain the maintenance of the parts. The present invention relates to a multi-stage lifter whose structure is improved so that it can be rotated.
The present invention relates to a base plate which is fixed to a ground surface, a plurality of supports provided vertically detachably with bolts on the upper surface of the base plate, detachably coupled to the plurality of supports by detachable means, A base body fixed to an upper surface of the pedestal, and a plurality of pedestals accommodated in the base body and having a plurality of stages Lifting means provided on each of the lifter bodies for lifting and lifting each of the lifter bodies disposed at positions eccentrically disposed on the lifting screw shafts; and means for lifting and lowering the lifter body by rotating the base to move the base body and the lifter body close to the ground A lifter body rotatably supported on the lifter body, It consists of a supporting means for supporting.

Description

{MULTI-STAGE LIFTER}

The present invention relates to a multi-stage lifter, in particular, a multi-stage lifter body in which a stacked article such as a radar communication equipment is mounted on the upper portion and a plurality of stages of lifter bodies each having a steel tower shape are vertically lifted and lowered by respective lifting screw shafts, The present invention relates to a multi-stage lifter whose structure is improved so that the lifter body can be raised or lowered.

BACKGROUND ART [0002] In general, a lifter is a device used for lifting or moving a person or an object to a certain height, and is used in various forms in various fields.

For example, there is a disadvantage in that the forklift is mainly used for unloading or lifting an object at a factory or a warehouse at a certain height, but the lifter function is applied. When the object such as a moving object is lowered or raised The lift function is applied to the gondola or the ladder used in the elevator, and the elevator which carries people from a tall building can not be used outside the predetermined place, but it is a kind of lifter.

As such, most of the conventional lifters were usually loaded with objects or persons in a fixed frame such as an enemy trial and were allowed to lift the enemy trial to the desired height.

On the other hand, in the case of a lighting tower for illuminating outdoors at night, a lighting apparatus is usually mounted on a support bar having a height of several meters from the ground so that appropriate light can be irradiated at a high position.

Prior art related to the existing multi-stage lifter includes a base fixing shaft fixedly installed on the ground as disclosed in Korean Patent Registration No. 10-1057415 entitled " pipe-type multi-stage lifter "(registered on August 20, 2011) Up and down driving means for providing a driving force required for multi-step expansion and contraction through the ascending and descending of the up-and-down descent shaft; and a control means for controlling the driving force provided by the up- Wherein the lifting and lowering driving means comprises a driving motor having a power shaft disposed at one side of the base fixing shaft and for providing a driving force, A gear connection portion disposed vertically in the base fixing shaft and capable of transmitting the driving force of the gear connection portion of the gear connection portion Wherein the screw member is screwed on the screw member and is integrally connected to the lowermost up / down coaxial shaft, wherein the up / down moving means comprises a support bracket disposed on one side of the up / And a connecting member which is connected to and fixed on a shaft vertically adjacent to the up / down coaxial shaft on both sides of which the supporting bracket is disposed, the both ends of which are disposed around the rotating member, And is arranged sequentially and repeatedly from the bottom up and down down to the top down up and down in accordance with the number of multi-stage up and down coils.

Another prior art related to the existing multi-stage lifter is disclosed in Korean Patent Registration No. 10-0741960 entitled " Multi-stage Lifter "(registered on July 16, 2007) A plurality of double rollers are installed in a moving frame moving horizontally by a hydraulic cylinder at a lower portion of the bottom frame, a fixing roller is installed in the bottom frame, and the double rollers, And the tip of the wire is fixed to the edge of the redistribution plate. When the moving frame is pushed by the hydraulic cylinder, the wire is pulled and the strut is pulled out in multiple stages, And when the falling plate is lowered, it is brought into close contact with the bottom frame so as to be the minimum height.

However, in the case of the conventional multi-stage lifter, it is possible to extend the length by stretching the stacking plate by pulling out the multi-stage support stand by using wires, or by adhering the stacking plate to the floor frame, The maintenance of the parts is not easy to manage due to the failure factors of the parts.

In addition, in the past, in order to maintain and repair the goods loaded on the enemy trial, the worker has to perform work on the upper side of the enemy trial, so that there is a fear that a safety accident such as a fall accident may occur.

Korean Patent Registration No. 10-1057415 entitled "Pipe-shaped multi-stage lifter" (registered on August 10, 2011) Korean Registered Patent No. 10-0741960 entitled " Multistage Lifter "(registered on July 16, 2007)

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and it is an object of the present invention to provide a lifter lifting device for lifting and lowering multi-stage lifter bodies by using a lifting screw jack in a state where communication equipment such as a radar is mounted on the lifter It is another object of the present invention to provide a multi-stage lifter having an improved structure in which the multi-stage lifter body can be rotated close to the ground to maintain and manage the communication equipment on the ground.

According to an aspect of the present invention, there is provided a portable terminal comprising: a base plate fixed to a ground; a plurality of pillars vertically detachable by bolts on an upper surface of the base plate; A base body that is fixed to an upper surface of the pedestal; a base body that is accommodated in the base body and is mounted on an upper portion of the base body; Lifting means provided on each of the lifter bodies for lifting and lifting each of the lifter bodies disposed at a position eccentrically disposed on each of the lifting screw shafts; Rotating means for rotating the lifter body close to the ground; When it characterized by having a lifter body with a support means for supporting the eccentric, respectively.

The detachment means includes a plurality of fitting grooves formed in a side edge of the pedestal so as to fit the upper portion of the column and a fixing nut fastened to the upper portion of the column fitted in the fitting groove.

The lifting means includes a first lifting screw shaft rotatably driven by a first lifting motor mounted on an upper side of the pedestal and screwed to a bottom surface of the first lifter body to lift and lift the first lifter body, A second lifting screw shaft rotatably driven by a second lifting motor mounted on a bottom surface of the body and screwed to a bottom surface of the second lifter body to lift and lift the second lifter body; A third lifting screw shaft rotatably driven by a third lifting motor mounted on the third lifter body and screwed to the bottom surface of the third lifter body to lift and lift the third lifter body, And a fourth lifting screw shaft rotatably driven by a fourth lifting motor and screwed to a bottom surface of the fourth lifter body to lift and lift the fourth lifter body.

The connection means includes a vertical base vertically installed on the upper surface of the base plate and a connection bracket protruding downward from a lower surface of the base and having an end rotatably connected to an upper portion of the vertical base via a rotary shaft.

The rotating means includes a fixed base vertically installed on the upper surface of the base plate, a rotating body rotatably connected to a hinge shaft at an upper portion of the fixed base, and a rotating body accommodated in the rotating body and mounted on the outer side of the rotating body A rotating screw shaft that is moved up and down by a rotational driving force of a rotating motor and an interlocking bracket that is protruded downward from a lower surface of the receiving unit and is connected to an end of the rotating screw shaft by a pin.

Wherein each of the lifter bodies has a rectangular cross-sectional structure, and the support means includes: a support roller provided on the support bracket provided for each corner portion of each lifter body received in the inner side so as to be capable of rolling, and an inner lifter body And a support plate contacting the support rollers when the lifter bodies are lifted and lowered at an edge portion of an inner circumferential surface of the outer lifter body.

The present invention further includes a branch wire connecting the upper portion of the lifter bodies to the ground, and a turnbuckle located in the middle of the branch wire and adjusting the tension of the branch wire.

First, according to the present invention, after the base body and the pedestal are rotated by the rotating means, the worker is disassembled on the ground for maintenance and maintenance of the loaded article coupled to the fourth lifter body rotated to a position close to the ground, So that the operator can perform the work on the ground, and the safety accident such as falling can be prevented.

Secondly, the detachment means of the present invention has the advantage that it can be easily detached from the pedestal when the pedestal is rotated by the rotating means and the base body is rotated.

Third, since the lifting means of the present invention operates the lifter body located inside each of the first, second, third and fourth lifting screw shafts in an eccentric position, the lifter bodies can be easily lifted and lowered .

Fourth, the present invention has the advantage that the pedestal, the base body, and the multi-stage lifter body can be rotated with a simple structure since the pedestal is connected to the base plate by the connecting means and the rotating means so as to be rotatable from the base plate to the rotating shaft.

Fifth, the present invention has an advantage that each lifted lifter body can be supported by using the support means composed of the support plate and the support roller.

Sixth, the present invention has an advantage that a supporting force against wind pressure can be reinforced by connecting the branch wire to the upper surface of the lifter body and the ground.

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a configuration diagram showing the configuration of a multi-stage lifter according to the present invention; Fig.
FIGS. 2A and 2B illustrate a state where the lifter bodies of the present invention are in a contracted state and rotated by a rotating means; FIG.
3 is a plan view of the lifter bodies and the base body of the present invention.
4A and 4B are a front view and a side view showing the rotating means of the present invention.
5A and 5B are a front view and a side view showing the elevating means of the present invention.

1 to 3, the multi-stage lifter according to the present invention includes a base plate 110 fixed to the ground, a plurality of pillars vertically detachably mounted on the upper surface of the base plate 110, A pedestal 200 detachably connected to the plurality of struts 150 by detachable means 800 and separated from the upper side of the base plate 110; A base body 410 fixed to the upper surface of the pedestal 200; a plurality of lifting and lowering screws disposed in the base body 410, A plurality of stages of lifter bodies which are lifted by the lifting means 600 and on which an article to be stacked is mounted and rotating means for rotating the base 200 to rotate the base body 410 and the lifter body close to the ground 500), It made a lifter body of the lifter means of the eccentric when the lifting body to the support means 700 for supporting respectively.

Referring to FIG. 1, a plurality of pillars 150 are fastened to the base plate 110 fixed on the floor by bolts, and the pillars 150 are vertically fixed.

The pedestal 200 is mounted on the upper end of the support 150 so that the pedestal 200 is disposed on the upper side of the base plate 110.

The connecting means 300 for rotatably connecting the pedestal 200 to the base plate 110 includes a vertical base 310 vertically installed on the upper surface of the base plate 110, And a connection bracket 320 protruding downward from the surface and having an end rotatably connected to an upper portion of the vertical base 310 via a rotary shaft 330.

The vertical base 310 protrudes upward at the center of the base plate 110 and is connected to the lower end of the connection bracket 320 via a rotary shaft 330. [

 The present invention further includes a branch wire 910 connecting the upper portion of the lifter bodies to the ground and a turnbuckle 920 located between the branch wire 910 and adjusting the tension of the branch wire 910 .

The branch wire 910 reinforces the resistance against the wind pressure by applying a tensional force to both left and right sides of the lifter body.

The base body 410 is a rectangular cylinder fixed to the upper side of the pedestal 200 and has a structure in which the lower part of the first lifter body 420 located at the lowest level that can be elevated inside the base body 410 is accommodated.

The second lifter body 430 is vertically received in the first lifter body 420 and the third lifter body 440 is vertically received in the second lifter body 430, A fourth lifter body 450 is vertically received in the third lifter body 440.

The first, second, third, and fourth lifter bodies are lifted and lowered by respective lifting and lowering means 600, and the lifting and lowering means 600 includes a first lifting motor 610 mounted on the upper side of the base 200 A first lifting screw shaft 615 rotatably driven by the first lifter body 420 and screwed to a bottom surface of the first lifter body 420 to lift and lift the first lifter body 420, A second lifting screw shaft 625 rotatably driven by a second lifting motor 620 mounted on the lifter body 430 and screwed to a bottom surface of the second lifter body 430 to lift and lift the second lifter body 430, The third lifter body 440 is rotated by the third lifting motor 630 mounted on the bottom surface of the second lifter body 430 and screwed to the bottom surface of the third lifter body 440, Driven by a fourth lifting motor 640 mounted on the bottom surface of the third lifter body 440, Is screwed into the bottom surface of the emitter body (450) is composed of a fourth elevating screw shaft (645) for lifting the fourth lifter body (450).

The first, second, third, and fourth lift motors 610, 620, 630, and 640 are disposed on the bottom surfaces of the base body 410 and the first, second and third lifter bodies 420, 430, and 440, Thereby lifting and lowering the lifter bodies.

That is, each of the elevating screw shafts is threaded on the outer circumferential surface and the upper end passes through the bottom of the lifter body located on the inside of each of the elevating screw shafts, so that when the first, second and third lift motors 610, 620, 630 and 640 are driven, The lifting screw shaft is rotated and the inner lifter bodies that are screwed together are lifted and lowered, respectively.

The first, second, third, and fourth lifting motors 610, 620, 630, and 640 may be driven in the forward direction or the reverse direction so that the first, second, third, and fourth lifter bodies 420, When the four lift motors 610, 620, 630, and 640 are driven in the reverse direction, the lifter body is lowered to reduce the total length as shown in FIG. 2A, and the first, second, 420, 430, 440, 450 overlap.

2B, the detachment means 800 includes a plurality of fitting grooves 810 formed in a side edge of the pedestal 200 so as to fit the upper portion of the pillars 150, And a fixing nut 820 fastened to the upper portion of the support 150.

The detachment means 800 releases the engagement of the support pillars 150 and separates them from the pedestal 200 and the base plate 110 before the lifter body is rotated by the rotation means 500. [

The lifting and lowering means 800 may be constructed such that the support 150 is separated from the support 200 and the base plate 110 when the support 200 is rotated or when the lifter 150 is raised, (200).

3, each of the lifter bodies has a rectangular cross-sectional structure, and the support means 700 includes a supporting bracket 710 provided for each corner portion of the lifter bodies accommodated inside, And a support plate 730 that contacts the support roller 720 when the lifter bodies are lifted and lowered at an inner peripheral edge portion of the outer lifter body where the inner lifter body having the support roller 720 is accommodated .

The support roller 720 has a structure in which a bearing is embedded therein.

The first, second, and third lifter bodies 420, 430, and 440 have upper and lower surfaces communicating with each other. The fourth lifter body 450 positioned at the innermost portion has an upper surface on which an article to be loaded, .

The support roller 720 installed at the outer edge of the first lifter body 420 is rolled in contact with the support plate 730 vertically installed on the inner side edge of the base body 410, 420).

The other second, third, and fourth lifter bodies 430, 440, and 450 also contact the support plate 730 installed on the inner edge of the lifter body located on the outer side where the support roller 720 installed on the outer edge of the lifter body located on the inner side, Thereby supporting the lifting operation of the lifter bodies.

The supporting means 700 supports the lifting operation of the lifter bodies having the eccentric center of gravity even if each lifting screw shaft is located at an eccentric position deviated from the center position.

4A and 4B, the rotating unit 500 includes a fixing table 510 vertically installed on the upper surface of the base plate 110, A rotary screw shaft 530 which is moved up and down by a rotary driving force of a rotary motor 540 accommodated in the rotary body 520 and mounted on the outer side of the rotary body 520, And an interlocking bracket 560 protruding downward from the lower surface of the pedestal 200 and connected to an end of the rotating screw shaft 530 by a pin.

The rotary screw shaft 530 is rotatably connected to the fixing table 510 via a hinge shaft 525 and is disposed at an inclined angle.

A bellows cover 550 is further provided on the outer side of the rotating screw shaft 530 to seal the foreign matters such as dust.

The rotating screw shaft 530 is moved upward or downward in the forward and reverse directions of the rotating motor 540 in accordance with the rotation of the motor shaft of the rotating motor 540 in the rotating body 520, And rotates around the rotation shaft 330.

A rotation bracket 515 for holding the hinge shaft 525 is disposed on the fixing table 510.

5A and 5B are a front view and a side view of the elevating screw shaft of the present invention. As the motor shaft of the elevating motor is engaged with the outer circumferential surface of the elevating screw shaft, when the elevating screw shaft of the elevating motor is driven in forward and reverse directions, And has a structure in which the corresponding lifter body screwed with the lifting screw shaft is raised and lowered by the rotation of the lifting screw shaft.

A bellows cover 660 is disposed outside the lifting screw shaft to prevent foreign matter such as dust from penetrating.

In the present invention having such a configuration, a loaded article such as a communication radar is mounted on the upper surface of the fourth lifter body 450 and fixed by a fastening member such as a bolt, and a fixing nut 820 is fastened to the upper end of the strut 150 The support base 200 is supported on the upper side of the base plate 110 by using the support pillars 150.

Thereafter, power is supplied to each lifting motor to rotate the lifting screw shaft in the forward direction, thereby lifting the inner lifter bodies fastened to the lifting screw shaft.

At this time, the lifter bodies are lifted and lowered in accordance with the rotational driving of the lifting screw shaft.

As a result, the stacked article is kept in a state of being seated on the upper surface of the fourth lifter body 450 raised to the uppermost side as each lifter body is lifted in the form of a pylon.

Conversely, the lifter body, which stands on the pedestal 200, can be rotated proximate to the ground using rotating means 500 to move the loaded article to a position close to the ground for maintenance of the loaded article .

It is necessary to release the fastening state of the pedestal 200 before the operation of the rotating means 500. In the above disengagement operation, the pedestal 200, which is supported by the pillars 150, After releasing the bolt connecting the lower end of the supporting column 150 and the lower end of the supporting column 150 and releasing the fixing state of the fixing nut 820 fastened to the upper end of the supporting column 150, And then separates the pillars 150. As shown in Fig.

The rotating screw shaft 530 engaged with the motor shaft of the rotating motor 540 is lifted up with respect to the hinge shaft 525, And the pedestal 200 connected to the interlocking bracket 560 is pushed and rotated about the rotary shaft 330 in the direction of rotation of the clock hands to rotate the first, second, third and fourth lifter bodies to a position close to the ground .

Therefore, after the base body 410 and the pedestal 200 are rotated by the rotating means 500, the worker is moved to the fourth lifter body 450, which is rotated to a position close to the ground, It can be disassembled and assembled on the ground for maintenance management and parts replacement, so that the worker can perform work on the ground, and there is an advantage that a safety accident such as falling can be prevented.

Although the present invention has been described in detail with reference to specific embodiments, it is to be understood that the invention is not limited to the disclosed embodiments. Therefore, the scope of the present invention should not be limited to the above-described embodiments, but should be determined by the appended claims, as well as the appended claims.

That is, the present invention described above is not limited to the above-described specific preferred embodiments, and any person skilled in the art will be allowed to use the present invention without departing from the gist of the present invention. It will be understood that various modifications can be made without departing from the spirit and scope of the invention as defined in the appended claims.

110: base plate 150: holding
200: pedestal 300: connecting means
310: Vertical stand 320: Connection bracket
330: rotating shaft 410: base body
420, 430, 440, 450: First, second,
500: rotating means 510:
515: Rotation bracket 520: Rotation body
525: Hinge shaft 530: Rotary screw shaft
540: Rotary motor 550: Bellows cover
560: Interlocking bracket 600: Lift means
610: first elevating motor 615: first elevating screw shaft
620: second lift motor 625: second lift screw shaft
630: third elevating motor 635: third elevating screw shaft
640: fourth elevating motor 645: fourth elevating screw shaft
660: Bellows cover 700: Support means
710: Support bracket 720: Support roller
730: support plate 800: detachment means
810: Fitting groove 820: Fixing nut
910: branch wire 920: turnbuckle

Claims (7)

A base plate 110 fixed to the ground,
A plurality of struts 150 vertically detachably mounted on the upper surface of the base plate 110 by bolts,
A pedestal 200 detachably connected to the plurality of struts 150 by detachable means 800 and spaced apart from the upper side of the base plate 110,
A connecting means 300 for rotatably connecting a lower portion of the pedestal 200 to the ground,
A base body 410 fixed to the upper surface of the pedestal 200,
A plurality of stages of lifter bodies accommodated in the base body 410 and mounted on the upper part thereof,
Lifting means (600) provided at each of the lifter bodies and disposed at a position where the lifting screw shafts are eccentrically moved to lift the lifter bodies,
Rotating means 500 for rotating the pedestal 200 to rotate the base body 410 and the lifter body close to the ground,
And a support means (700) for supporting the lifter body, which is eccentric when lifting and lowering the plurality of stages of the lifter body, respectively. The method according to claim 1,
The detachable means 800 includes a plurality of fitting grooves 810 formed in a side edge of the pedestal 200 to fit the upper portion of the pillars 150,
And a fixing nut (820) fastened to an upper portion of a support (150) fitted in the fitting groove (810). The method according to claim 1,
The lifting means 600 is rotatably driven by a first lifting motor 610 mounted on the upper side of the pedestal 200 and is screwed to the bottom surface of the first lifter body 420, A first elevating screw shaft 615 for elevating and lowering the screw shaft 615,
The second lifter body 430 is rotationally driven by the second lifting motor 620 mounted on the bottom surface of the first lifter body 420 and is screwed to the bottom surface of the second lifter body 430 to lift and lift the second lifter body 430 A second lifting screw shaft 625,
The third lifter body 440 is rotated by the third lifting motor 630 mounted on the bottom surface of the second lifter body 430 and screwed to the bottom surface of the third lifter body 440, A third lifting screw shaft 635,
The fourth lifter body 450 is rotationally driven by a fourth lifting motor 640 mounted on the bottom surface of the third lifter body 440 and is screwed to the bottom surface of the fourth lifter body 450 to lift the fourth lifter body 450 And a fourth lifting screw shaft (645) for lifting the fourth lifting screw shaft (645). The method according to claim 1,
The connecting means 300 includes a vertical base 310 vertically installed on the upper surface of the base plate 110,
And a connection bracket (320) protruding downward from a lower surface of the pedestal (200) and having an end rotatably connected to an upper portion of the vertical base (310) via a rotation shaft (330). The method according to claim 1,
The rotating unit 500 includes a fixing table 510 vertically installed on the upper surface of the base plate 110,
A rotating body 520 rotatably connected to the upper portion of the fixing table 510 by a hinge shaft 525,
A rotating screw shaft 530 which is accommodated in the rotating body 520 and is lifted and lowered by a rotational driving force of a rotating motor 540 mounted on the outside of the rotating body 520,
And an interlocking bracket (560) projecting downward from a lower surface of the pedestal (200) and connected to an end of the rotating screw shaft (530) by a pin. The method according to claim 1,
Each of the lifter bodies has a rectangular cross-sectional structure. The support means 700 includes a support roller 720 that is capable of rolling on a support bracket 710 provided at a corner of each lifter body housed inside,
And a support plate (730) for contacting the support roller (720) when the lifter bodies are lifted and lowered at an edge portion of an inner circumferential surface of the outer lifter body in which the inner lifter body having the support roller (720) is accommodated. . The method according to claim 1,
A branch wire 910 connecting the top of the lifter bodies to the ground,
Further comprising a turnbuckle (920) positioned in the middle of the branch wire (910) and adjusting the tension of the branch wire (910).

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