CN211716166U - Triangular hoisting frame - Google Patents

Abstract

The utility model discloses a triangular hoisting frame, which comprises a triangular base, wherein base hinges are respectively arranged at the corners of the base, supporting rods are rotatably arranged in the base hinges, the top ends of the three supporting rods are provided with a footstock through hinges, the lower end of the footstock is fixedly provided with a lifting mechanism, the supporting rods comprise an upper rod and a lower rod, the upper rod is slidably arranged in the lower rod, a transmission mechanism is arranged between the upper rod and the lower rod, the transmission mechanism comprises a lead screw, the lead screw is rotatably arranged along the axis of the lower rod, a lead screw nut meshed with the lead screw is fixedly arranged in the upper rod, the side wall surface of the lower rod is uniformly provided with limiting holes along the length direction, the lower end of the upper rod is fixedly provided with a non-return mechanism matched with the limiting holes, the triangular hoisting frame transmits power through the lead screw, realizes the length adjustment of the supporting rods, realizes the synchronous adjustment of a plurality of, and in the hoisting process, the length can be adjusted as well.

Description

Triangular hoisting frame

Technical Field

The utility model relates to a hoisting equipment technical field specifically is a triangular hoisting frame.

Background

On the installation site of equipment, equipment is often required to be lifted, most of the traditional lifting modes adopt a crane for lifting, but in the installation process of part of amusement equipment, the installation space is small, the equipment is not suitable for the situation that the crane enters, and part of components are small in size, light in weight and low in lifting height, for example, only small-distance lifting is required, the bottom is overhauled or assembled, the cost of the crane is too high, the crane is limited by the field, and the flexibility is poor, so that the simple lifting equipment with small size and high flexibility is required, a simple triangular hoisting frame is available on the existing market, when the simple lifting frame is used, the lifting equipment at the top is used for lifting through a fixed support rod, but the support rods of the existing tripod mostly adopt upper and lower telescopic rods which are directly fixed, the length adjustment is difficult, the height adjustment can only be carried out before the lifting, in the lifting process, the adjustment is difficult, and the single length adjustment can be carried out at a time, so that the use scene is limited.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to overcome current defect, provide a triangular hoisting frame, carry out power transmission through the lead screw, realize the length adjustment of vaulting pole, realize the synchronous adjustment of multiunit vaulting pole, and at the in-process of lifting by crane, can carry out length adjustment equally, can effectively solve the problem in the background art.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a triangular crane frame, includes triangular base, the bight of base sets up the base hinge respectively, base hinge internal rotation installation vaulting pole, the top of three vaulting poles sets up the footstock through the hinge, the fixed hoist mechanism that sets up of lower extreme of footstock, the vaulting pole includes upper boom and lower beam, upper boom slidable mounting is inside the lower beam, set up drive mechanism between upper boom and the lower beam, drive mechanism includes the lead screw, the lead screw rotates along the lower beam axis and arranges, the inside fixed lead screw nut who sets up and lead screw meshing of upper boom, the lateral wall surface of lower beam evenly sets up spacing hole along length direction, the fixed non return mechanism that sets up spacing hole complex of lower extreme of upper boom.

As a preferred technical scheme of the utility model, drive mechanism still includes the worm wheel, the worm wheel is installed with the vertical rotation of base, the axis and the lead screw of worm wheel pass through the universal joint and are connected, the worm wheel outside sets up rather than the worm of meshing, the worm tip sets up the motor, utilizes worm and worm wheel to carry out power transmission, has great drive ratio, and has self-locking function, avoids the adjustment in-process, and reverse drive motor is rotatory, avoids upper boom and lower boom free slip, guarantees to lift by crane safety.

As the utility model discloses a preferred technical scheme, adjacent two sets of worms are coaxial arrange and the middle coaxial transmission shaft that sets up, through the transmission shaft transmission, guarantee to drive the synchronous rotation of worm wheel with many worms to the flexible speed of three vaulting poles is the same in the drive lead screw synchronous rotation, thereby guarantees the vertical up-and-down motion of footstock.

As a preferred technical scheme of the utility model, non return mechanism includes the body, the body is inside to set up the slide along the horizontal direction, the inside slip of slide sets up the bolt, the inside fixed electro-magnet that sets up of slide, set up the spring between bolt and the electro-magnet, when non return mechanism is in the locking state, the bolt inserts spacing downthehole portion, after vaulting pole height control finishes, the bolt inserts spacing downthehole portion, radial shearing force is born to the bolt this moment to organize upper boom and lower beam relative slip, thereby avoid the vaulting pole to return and contract, when carrying out vaulting pole length adjustment, make the electro-magnet electrified, attract the bolt rearward movement, break away from with spacing hole, thereby contact locking makes upper boom and lower beam can relative motion, thereby guarantee to lift by crane the stability of the vaulting pole length of in-process, guarantee to lift by crane safety.

As an optimal technical scheme of the utility model, the base is unilateral open-ended triangle-shaped frame, the bottom of base sets up the universal wheel, and the equipment of being convenient for removes, especially lifts by crane behind the heavy object, makes the heavy object together remove along with the tripod, the transport of the heavy object of being convenient for.

Compared with the prior art, the beneficial effects of the utility model are that: this triangle crane frame bottom adopts the triangle-shaped base to fix, is convenient for guarantee the stability of bottom, and adopts the lead screw as the adjustment mechanism of vaulting pole, the adjustment of the vaulting pole length of being convenient for, and the input mechanism of lead screw is in the lead screw bottom, can drive the lead screw rotation at the in-process of lifting by crane to carry out the adjustment of vaulting pole length, set up non return mechanism in the vaulting pole inside moreover, effectively prevent to lift by crane the in-process, upper boom and lower beam relative slip avoid the vaulting pole to return and contract, effectively guarantee to lift by crane safety.

Drawings

FIG. 1 is a schematic structural view of the present invention;

fig. 2 is a sectional view of the present invention;

FIG. 3 is a schematic view of the transmission mechanism of the present invention;

fig. 4 is a cross-sectional view of the utility model a.

In the figure: the device comprises a base 1, universal wheels 101, a base hinge 102, a support rod 2, an upper rod 201, a lower rod 202, a top seat 3, a lifting mechanism 301, a transmission mechanism 4, a motor 401, a worm wheel 402, a lead screw 403, a lead screw nut 404, a worm 405, a transmission shaft 406, a check mechanism 5, a bolt 501, a spring 502 and an electromagnet 503.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-4, the present invention provides a technical solution: the utility model provides a triangular hoisting frame, including triangular base 1, the bight of base 1 sets up base hinge 102 respectively, rotation installation vaulting pole 2 in base hinge 102, the hinge sets up footstock 3 is passed through on three vaulting pole 2's top, the fixed hoist mechanism 301 that sets up of lower extreme of footstock 3, vaulting pole 2 includes upper boom 201 and lower beam 202, upper boom 201 slidable mounting is inside lower beam 202, set up drive mechanism 4 between upper boom 201 and the lower beam 202, drive mechanism includes lead screw 403, lead screw 403 rotates along lower beam 202 axis and arranges, the inside fixed lead screw nut 404 that sets up and lead screw 403 meshing of upper boom 201, the lateral wall surface of lower beam 202 evenly sets up spacing hole along length direction, the fixed check mechanism 5 that sets up spacing hole complex of lower extreme of upper boom 201.

During installation, the middle point of the universal joint between the lead screw 403 and the axis of the worm wheel 402 is overlapped with the rotating shaft of the base hinge 102, so that when the length of the stay rod 2 is changed, the lead screw 403 can have the same rotating angle with the lower rod 402.

Drive mechanism 4 still includes worm wheel 402, worm wheel 402 and the vertical installation of rotating of base 1, the axis and the lead screw 403 of worm wheel 402 pass through the universal joint and are connected, worm wheel 402 outside sets up rather than the worm 405 of meshing, the worm tip sets up motor 401, utilize worm 405 and worm wheel 402 to carry out power transmission, have great drive ratio, and have self-locking function, avoid the adjustment in-process, reverse drive motor 401 is rotatory, avoid upper boom 201 and lower boom 202 free slip, guarantee to lift by crane safety.

Two sets of adjacent worms 405 coaxial arrangement and middle coaxial transmission shaft 406 that sets up, through transmission shaft 406 transmission, guarantee to drive worm wheel 402 synchronous rotation with worm 405 synchronous rotation more to it is the same to drive lead screw 403 synchronous rotation, thereby guarantees that three vaulting poles 2's telescopic speed is the same, thereby guarantees the vertical up-and-down motion of footstock 3.

The non-return mechanism 5 comprises a body, the inside horizontal direction that sets up the slide that follows of body, the inside slip of slide sets up bolt 501, the inside fixed electro-magnet 503 that sets up of slide, set up spring 502 between bolt 501 and the electro-magnet 503, when non-return mechanism 5 is in the locking state, bolt 501 inserts inside the spacing hole, after 2 height adjustment of vaulting pole, bolt 501 inserts inside the spacing hole, bolt 501 bears radial shearing force this moment, with organize upper boom 201 and lower boom 202 relative slip, thereby avoid vaulting pole 2 to return and contract, when carrying out 2 length adjustment of vaulting pole, make electro-magnet 503 electrified, attract bolt 501 backward movement, break away from with spacing hole, thereby contact locking, make upper boom 201 and lower boom 202 can relative motion, thereby guarantee the stability of 2 length of the vaulting pole of lifting by crane the in-process, guarantee to lift by crane safety.

The base 1 is a triangular frame with an opening on one side, the universal wheels 101 are arranged at the bottom of the base 1, so that equipment can move conveniently, particularly, after a heavy object is lifted, the heavy object can move together with the tripod, and the heavy object can be carried conveniently.

When in use: the motor 401 drives the worm 405 to synchronously rotate through the transmission shaft, thereby driving the worm 405 to be meshed with the worm wheel 402 to rotate, driving the lead screw 403 to synchronously rotate, driving the lead screw 403 to be meshed with the lead screw nut 404 for transmission, driving the upper rod 201 and the lower rod 202 to relatively slide, realizing synchronous adjustment of the lengths of the three support rods 2, thereby ensuring that the top seat 3 is vertically vertical, and the lifting mechanism 301 in the top seat 3 can be a common manual or electric hoist, hoisting the heavy object, and one side of the base 1 is provided with an opening, thereby being convenient for moving the base 1, enabling the lifting mechanism 301 to be positioned right above the heavy object, thereby facilitating hoisting the heavy object, meanwhile, when the length of the support rods 2 is adjusted, the electromagnet 503 is electrified, enabling the electromagnet 503 to attract the bolt 501 to move backwards, enabling the bolt 501 to be separated from the limiting hole, thereby enabling the upper rod 201 and the lower rod 202 to relatively slide, and after the adjustment is finished, the electromagnet 503 is electrified, and when the upper, when the bolt 501 moves to the position coaxial with the limiting hole, under the action of the spring 502, the bolt 501 automatically pops up and is inserted into the limiting hole, so that the relative sliding between the upper rod 201 and the lower rod 202 is limited, the locking of the upper rod 201 and the lower rod 202 is realized, the change of the length of the support rod 2 in the lifting process is avoided, and the lifting safety is ensured.

The utility model discloses the bottom adopts triangle-shaped base 1 to fix, be convenient for guarantee the stability of bottom, and adopt lead screw 403 as the adjustment mechanism of vaulting pole 2, the adjustment of the 2 lengths of vaulting pole of being convenient for, and the input mechanism of lead screw 403 is in lead screw 403 bottom, can carry out power input at the in-process of lifting by crane, it rotates to drive lead screw 403, thereby carry out the adjustment of 2 lengths of vaulting pole, and at 2 inside non return mechanism 5 that set up of vaulting pole, effectively prevent to lift by crane the in-process, upper boom 201 and lower boom 202 relative slip, avoid vaulting pole 2 to return and contract, effectively guarantee to lift by crane safety.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (5)

1. A triple-lift frame comprising a triangular base (1), characterized in that: the corner of the base (1) is respectively provided with a base hinge (102), the base hinge (102) is internally and rotatably provided with a stay bar (2), the top ends of the three stay bars (2) are provided with a top seat (3) through hinges, the lower end of the top seat (3) is fixedly provided with a lifting mechanism (301), the stay bar (2) comprises an upper bar (201) and a lower bar (202), the upper rod (201) is arranged in the lower rod (202) in a sliding way, a transmission mechanism (4) is arranged between the upper rod (201) and the lower rod (202), the transmission mechanism comprises a lead screw (403), the lead screw (403) is rotationally arranged along the axis of the lower rod (202), a screw nut (404) engaged with the screw (403) is fixedly arranged in the upper rod (201), the side wall surface of lower beam (202) evenly sets up spacing hole along length direction, the lower extreme of upper beam (201) is fixed to be set up spacing hole complex non return mechanism (5).

2. The triple-lift frame according to claim 1, wherein: the transmission mechanism (4) further comprises a worm wheel (402), the worm wheel (402) and the base (1) are vertically rotatably mounted, the axis of the worm wheel (402) is connected with the lead screw (403) through a universal joint, a worm (405) meshed with the worm wheel (402) is arranged outside the worm wheel (402), and a motor (401) is arranged at the end part of the worm.

3. The triple-lift frame according to claim 2, wherein: two adjacent sets of worms (405) are coaxially arranged with a drive shaft (406) coaxially disposed in the middle.

4. The triple-lift frame according to claim 1, wherein: non return mechanism (5) includes the body, the body is inside to set up the slide along the horizontal direction, the inside slip of slide sets up bolt (501), slide inside fixed setting electro-magnet (503), set up spring (502) between bolt (501) and electro-magnet (503), when non return mechanism (5) is in the locking state, bolt (501) insert spacing downthehole portion.

5. Triple-lift frame according to any of claims 1-4, characterized in that: the base (1) is a triangular frame with an opening on one side, and the bottom of the base (1) is provided with universal wheels (101).

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