CN213294442U

CN213294442U - Portal frame

Info

Publication number: CN213294442U
Application number: CN202021993583.XU
Authority: CN
Inventors: 陈刚
Original assignee: Jiangsu Glory Machinery Manufacturing Co ltd
Current assignee: Jiangsu Glory Machinery Manufacturing Co ltd
Priority date: 2020-09-14
Filing date: 2020-09-14
Publication date: 2021-05-28
Anticipated expiration: 2030-09-14

Abstract

The utility model discloses a portal frame, two vertical landing legs including the symmetry setting, two landing leg upper ends are connected with the main beam, the landing leg lower extreme be provided with the backup pad of ground contact, the backup pad both ends all are provided with the cuboid breach, it has the connecting rod to articulate in breach department backup pad, the connecting rod other end is connected with the universal wheel, be provided with the through-hole on the connecting rod, also be provided with the second through-hole in the backup pad, through-hole and second through-hole department are provided with the bolt, the second through-hole is located connecting rod and the articulated below of locating of backup pad, still be provided with vertical. The utility model discloses with articulated mutually between universal wheel and the backup pad, when not needing the portal frame to remove, the backup pad is direct and ground contact, has guaranteed the holistic stability of portal frame, when needing the portal frame to remove, raises the backup pad, recycles the bolt and makes the universal wheel in ground contact, and then the portal frame of being convenient for removes, makes the backup pad contact in ground after removing to target in place again, forms the firm support to the portal frame.

Description

Portal frame

Technical Field

The utility model relates to a hoist and mount technical field, concretely relates to portal frame.

Background

The existing hoisting and moving of some workpieces in a workshop generally can use a small movable portal frame, but the moving wheels of the movable portal frame are generally arranged at the lower end of the portal frame, but the situation that the portal frame is unstable due to the fact that the moving wheels are fixed only by a brake device exists in the movable portal frame.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a simple structure, fixed firm portal frame to the not enough of existence among the above-mentioned background art.

In order to achieve the above object, the utility model relates to a portal frame has adopted following technical scheme:

the utility model provides a portal frame, includes two vertical landing legs that the symmetry set up, two the landing leg upper end is connected with the main beam, sliding connection has the hoist on the main beam, the landing leg lower extreme is provided with the backup pad with ground contact, the backup pad both ends all are provided with the cuboid breach department backup pad articulates there is the connecting rod, the connecting rod other end is connected with the universal wheel, be provided with the through-hole on the connecting rod, also be provided with the second through-hole in the backup pad, the through-hole is provided with the bolt with second through-hole department, bolt restriction connecting rod rotates for the backup pad, the second through-hole is located connecting rod and backup pad articulated department below, still be. The universal wheels are hinged with the supporting plate, so that the supporting plate and the universal wheels can be in staggered contact with the ground, and the stability of the portal frame support is guaranteed when the portal frame does not move.

The utility model relates to a portal frame's further improvement part lies in, be provided with a plurality of second through-holes in the backup pad, a plurality of second through-holes are arranged along the rotation orbit of connecting rod. The position of the universal wheel can be adjusted to control the height of the supporting plate from the ground.

The utility model relates to a portal frame's further improvement part lies in, is provided with the second bolt in the second through-hole of the adjacent both sides of bolt male second through-hole. The setting of second bolt is assisted spacing to the connecting rod, guarantees the stability that universal wheel pair backup pad supported.

The utility model relates to a portal frame's further improvement part lies in, landing leg one side still is provided with the frame, be fixed with the motor in the frame, the output shaft coaxial coupling of motor has the screw rod, the screw rod with screw thread through-hole looks spiro union. The supporting plate moves upwards through the screw transmission structure, so that the universal wheels are in contact with the ground conveniently, and the portal frame moves.

Compared with the prior art, the beneficial effects of the utility model are that:

the utility model discloses with articulated mutually between universal wheel and the backup pad, when not needing the portal frame to remove, the backup pad is direct and ground contact, has guaranteed the holistic stability of portal frame, when needing the portal frame to remove, raises the backup pad, recycles the bolt and makes the universal wheel in ground contact, and then the portal frame of being convenient for removes, makes the backup pad contact in ground after removing to target in place again, forms the firm support to the portal frame.

Drawings

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

FIG. 2 is a schematic structural view of the motor of the present invention;

in the figure: 10 landing legs, 20 backup pads, 30 connecting rods, 40 universal wheels, 50 through holes, 60 second through holes, 70 threaded through holes, 80 motors and 81 screw rods.

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.

As shown in fig. 1 and 2, a portal frame comprises two vertical supporting legs 10 which are symmetrically arranged, the upper ends of the two supporting legs are connected with a main beam, the main beam is connected with a lifting appliance in a sliding way, the lower end of the supporting leg is provided with a supporting plate 20 which is contacted with the ground, rectangular notches are arranged at both ends of the supporting plate, the notches are positioned in the middle of both ends of the supporting plate, the supporting plate is hinged with a connecting rod 30 at the gap, the other end of the connecting rod is connected with a universal wheel 40, the connecting rod is provided with a through hole 50, the supporting plate is also provided with a second through hole 60, the aperture of the through hole is the same as that of the second through hole, the through hole and the second through hole are provided with bolts which limit the connecting rod to rotate relative to the supporting plate, the second through hole is positioned below the hinged position of the connecting rod and the supporting plate, and a vertical threaded through hole 70 is further formed in the supporting plate. Furthermore, a plurality of second through holes are formed in the supporting plate and are arranged along the rotating track of the connecting rod. So that the limit position of the connecting rod is adjustable, preferably, the bolt is inserted into the second through hole at the lowermost end. Furthermore, a second bolt is arranged in the second through hole at two adjacent sides of the second through hole into which the bolt is inserted. The second bolt is assisted and limited, and the supporting stability is guaranteed.

Further, in order to lift the supporting plate, a rack is further arranged on one side of the supporting leg, a motor 80 is fixed on the rack, an output shaft of the motor is coaxially connected with a screw 81, and the screw is in threaded connection with the threaded through hole. The total number of the motors is four, and the motors correspond to the four universal wheels one by one.

The utility model discloses a theory of operation does: when the whole portal frame is in standing, the supporting plate is in contact with the ground, and at the moment, when the portal frame lifting appliance works, the portal frame can ensure the stability of the whole portal frame; when the portal frame is required to move in position so as to facilitate the next-step operation, the motor on the frame is started, the screw rod structure is utilized to realize the upward movement of the supporting plate, the connecting rod is rotated again, the bolt is used for positioning, the universal wheel and the supporting plate are relatively limited, the universal wheel is moved again, the movement of the portal frame is realized, the structure is simple and reasonable, and the portal frame can be guaranteed to be stable while the movement can be guaranteed.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims

1. The utility model provides a portal frame, includes two vertical landing legs that the symmetry set up, two the landing leg upper end is connected with the main beam, sliding connection has hoist, its characterized in that on the main beam: the landing leg lower extreme is provided with the backup pad with ground contact, the backup pad both ends all are provided with the cuboid breach department backup pad articulates there is the connecting rod, the connecting rod other end is connected with the universal wheel, be provided with the through-hole on the connecting rod, also be provided with the second through-hole in the backup pad, through-hole and second through-hole department are provided with the bolt, bolt restriction connecting rod rotates for the backup pad, the second through-hole is located connecting rod and backup pad articulated below of locating, still be provided with vertical screw thread through-hole in the backup pad.

2. A gantry according to claim 1, wherein: a plurality of second through holes are formed in the supporting plate and are arranged along the rotating track of the connecting rod.

3. A gantry according to claim 2, wherein: and second bolts are arranged in the second through holes at two adjacent sides of the second through holes into which the bolts are inserted.

4. A gantry according to claim 1, wherein: the support leg is characterized in that a rack is further arranged on one side of the support leg, a motor is fixed on the rack, an output shaft of the motor is coaxially connected with a screw rod, and the screw rod is in threaded connection with the threaded through hole.