CN214653281U - Mechanical lifting rod for single screw - Google Patents

Abstract

The utility model discloses a single screw mechanical lifting rod, which comprises a pipe body, lift drive arrangement and intertube interlocking device, intertube interlocking device includes lock seat and bottom plate, there is radial lock chamber on the circumference of the left and right both sides of lock seat, lock chamber is embedded to have the lock cover, lock cover is embedded to have inside, outside lock shaft, the below of inside, outside lock shaft is equipped with the spacer pin, be equipped with the lock post on the inside, outside lock shaft, the lock post below is equipped with arc spacing groove, set up the interior arc groove that meshes with the lock post of outside lock shaft on the lock post of inboard lock shaft, set up the outer arc groove that meshes with the lock post of inboard lock shaft on the lock post of outside lock shaft, still set up the inboard locked groove of notch slant below on the lock post of inboard lock shaft, still set up the outside locked groove of notch slant above on the lock post of outside lock shaft; and a supporting plate locking hook matched with the inner side locking groove is arranged on the outer circumference of the circular arc-shaped lower supporting plate. The utility model discloses in adjacent pipe radial and axial connection reliable and the epaxial lock post of inside and outside lock is not fragile.

Description

Mechanical lifting rod for single screw

Technical Field

The utility model relates to a single screw machinery lifter.

Background

In the prior art, chinese patent ZL 98238478.5 discloses a telescopic mechanical lifting rod with a single screw and multiple round tubes, which comprises a tube body, a lifting driving device and an inter-tube interlocking device. The pipe body is a plurality of round pipes of which the diameters of the axes on the same straight line are sleeved together from large to small, among the round pipes, the outermost round pipe is a bottom pipe, the innermost round pipe is a top pipe, the rest round pipes are inner pipes, the bottom pipes are fixed on the base, the gaps between the adjacent round pipes are the same, the outer walls of the top pipe and the inner pipes are provided with guide keys along the axial direction, the upper ends of the bottom pipe and the inner pipes are provided with annular upper baffle rings, the inner diameters of the upper baffle rings are matched with the outer diameters of the adjacent inner side round pipes, the lower ends of the top pipe and the inner pipes are provided with annular lower supporting rings matched with the upper baffle rings, the outer diameters of the lower supporting rings are matched with the inner diameters of the adjacent outer side round pipes, and the inner circumference of the upper baffle rings is provided with guide grooves matched with the guide keys on the outer walls of the adjacent round pipes. The pipe body is arranged on the base, and the base is provided with a lifting driving device of the pipe body. An inter-pipe interlocking device is arranged between the adjacent circular pipes of the pipe body.

The top pipe of the pipe body is lifted upwards, the upper ends of the bottom pipe and the inner pipe are provided with the annular upper retaining rings, the lower ends of the top pipe and the inner pipe are provided with the lower supporting rings matched with the upper retaining rings, a plurality of pipes can be sequentially extended to form a long rod, and the mechanical lifting rod is in a lifted state due to the maximum height. When the mechanical lifting rod descends, the top pipe and the inner pipe fall into the bottom pipe, and the mechanical lifting rod is at the minimum height and is in a descending state. The lifting driving device of the pipe body can sequentially lift or drop a plurality of round pipes. The inter-pipe interlocking device can connect the adjacent inner side circular pipe and the outer side circular pipe together after the adjacent inner side circular pipe rises from the outer side circular pipe. The inter-tube interlocking device of the single-screw multi-circular-tube telescopic mechanical lifting rod is provided with a lever hinged at the inner lower part of the inner tube and the inner lower part of the top tube, one end of the lever is provided with a straight circular rod-shaped radial pin which can extend out of the tube from a through hole on the tube wall, and the other end of the lever is provided with a spring which enables the radial pin to be subjected to the external force of the radially extending tube. And a pin hole matched with the radial pin is arranged above the pipe wall of the outer round pipe adjacent to the inner pipe.

When the pipe is used, after the inner pipe or the top pipe rises, the radial pin below the circular pipe can extend out of the through hole of the circular pipe and is inserted into the pin hole above the pipe wall of the adjacent outer circular pipe due to the elastic force of the spring, and the circular pipe is connected with the adjacent outer circular pipe. The inter-pipe interlocking device of the mechanical lifting rod has the following defects: 1. the connecting piece of the inter-pipe interlocking device is a straight round bar-shaped radial pin hinged with one end of a lever below the inner pipe and a round pin hole of an adjacent outer round pipe, and the radial pin is inserted into the pin hole by elasticity, so that the radial connection process and the interlocking of the adjacent round pipes are not reliable; 2. the intertube interlocking device is only for going up and down and the radial intertube connecting device who links to each other, do not descend at mechanical lifter back, the axial intertube connecting device of adjacent pipe, when mechanical lifter ascended once more, adjacent pipe is because of the less contact that can laminate in clearance, this kind of laminating contact can cause adjacent pipe sometimes and rise simultaneously because of frictional force under the condition that does not have true continuous, because do not have true continuous, after the contact laminating disappears, the pipe that rises simultaneously because of frictional force can fall suddenly, the collision that the whereabouts suddenly produced can damage mechanical lifter.

In order to solve the defects of the inter-pipe interlocking device of the mechanical lifting rod, in the prior art, chinese patent ZL 201410507585.6 discloses an inter-pipe interlocking device of a single screw mechanical lifting rod, which is provided with a circular ring lock seat and a left and right circular arc lower supporting plates. The upper surfaces of the left side and the right side of the lock seat are respectively provided with a lock hook parallel to the axis of the circular ring of the lock seat, and the lower surfaces of the left side and the right side of the lock seat are respectively provided with a lock hook hole parallel to the axis of the circular ring of the lock seat. The circumference of the left side and the right side of the lock seat are respectively provided with a radial lock cavity, the lock cavity is provided with a lock cavity lock hole communicated with the inner circular hole of the lock seat, and a lock sleeve is embedded in the lock cavity. The lock sleeve is embedded with a lock shaft with an axis vertical to the axis of the lock seat circular ring, a 90-degree dihedral-shaped lock cylinder groove is arranged on the circumference of the inner side of the lock shaft, edges of dihedral angles of the lock cylinder groove are parallel to the axis of the lock shaft, a cylindrical lock cylinder which can be laterally moved out through a lock hole of the lock sleeve is arranged in the lock cylinder groove, a square groove with a groove opening inclined upwards is arranged on the circumference of the outer side of the lock shaft, and the groove bottom of the square groove is parallel to the axis of the lock shaft. A limiting pin vertical to the axis of the lock shaft is arranged below the lock shaft in the lock sleeve, and an arc-shaped limiting groove matched with the limiting pin and arranged along the circumferential direction of the lock shaft is arranged below the lock shaft. A torsion spring is arranged between the lock shaft and the lock sleeve, and the lock shaft is subjected to downward rotating force by the notch of the square groove. The upper baffle ring is arranged at the upper end orifice of the inner circular hole of the lock seat, and the outer circumferential surface of the lower supporting plate is provided with a semi-strip circular lock groove with a cross section matched with the lock cylinder.

When the intertube interlocking device of the single screw mechanical lifting rod is installed, the lock seat is installed at the upper ends of the bottom tube and the inner tube of the single screw mechanical lifting rod, the left side and the right side of the tube wall above the bottom tube and the inner tube are correspondingly provided with the pin holes communicated with the lock sleeve lock holes respectively, after the lock seat is installed at the upper ends of the bottom tube and the inner tube, the lock column can be laterally moved out through the lock sleeve lock holes and the pin holes, and the lower supporting plates are installed at the left side and the right side of the outer tube wall below the top tube and the inner tube. The inter-pipe interlocking device of the single screw mechanical lifting rod has the following defects in installation and use: when the lifting rod rises or falls each time, the lock cylinder serving as a radial connecting piece between the circular tubes needs to move correspondingly, and the lock cylinder is easy to wear and damage after being used for a long time, so that the radial connection between the circular tubes is failed.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to provide a single lead screw machinery lifter that adjacent pipe is radial and axial connection reliable, and the difficult wearing and tearing of connecting piece damage.

In order to solve the technical problem, the utility model relates to a single screw mechanical lifting rod, which comprises a pipe body, a lifting driving device and an inter-pipe interlocking device, wherein the pipe body consists of a bottom pipe, a top pipe and a plurality of inner pipes, the inter-pipe interlocking device comprises an annular lock seat and a left and a right circular arc lower supporting plates, the annular lock seat is arranged at the top end of each inner pipe, an annular upper sleeve is arranged at the upper end pipe orifice of the bottom pipe, and the left and the right circular arc lower supporting plates are arranged at the left and the right sides of the outer pipe wall below the top pipe and the inner pipes; the lower surfaces of the left side and the right side of the lock seat are provided with lock hook holes, the circumferences of the left side and the right side of the lock seat are provided with radial lock cavities, the lock cavities are provided with lock cavity lock holes, lock sleeves are embedded in the lock cavities, lock shafts are embedded in the lock sleeves, lock columns are arranged on the lock shafts, limit pins are arranged below the lock shafts, and arc-shaped limit grooves are arranged below the lock columns along the circumferential direction of the lock columns; the upper surfaces of the locking seats on the other inner pipes except the inner pipe adjacent to the top pipe are provided with the locking hooks vertically, the upper surface of the circular ring-shaped upper sleeve is also provided with the locking hooks vertically, the lock shaft comprises an inner lock shaft and an outer lock shaft which are respectively embedded into the inner side and the outer side of the lock sleeve, the axes of the inner lock shaft and the outer lock shaft are parallel, are positioned in the same plane and are vertical to the axis of the lock seat ring, the limiting pins are arranged below the inner lock shaft and the outer lock shaft, the lock columns are respectively arranged on the inner lock shaft and the outer lock shaft, the arc-shaped limiting grooves are respectively arranged below the lock columns of the inner lock shaft and the outer lock shaft, inner arc-shaped grooves meshed with the lock columns of the outer lock shaft are formed in the lock columns of the inner lock shaft and the outer lock shaft, outer arc-shaped grooves meshed with the lock columns of the inner lock shaft are formed in the lock columns of the outer lock shaft, inner lock grooves with inclined lower notches are formed in the lock columns of the inner lock shaft, and outer lock grooves with inclined upper notches are formed in the lock columns of the outer lock shaft; and a supporting plate locking hook matched with the inner side locking groove is arranged on the outer circumference of the circular arc-shaped lower supporting plate.

The utility model discloses a single screw mechanical lifter, when descending the state, latch hook on bottom tube and the inner tube is inserted in the latch hook hole of lock seat on the adjacent inboard pipe to the hook makes adjacent pipe realize axial connecting gradually in the outside locked groove of outside lock shaft notch top to one side, and the outer arc-shaped groove on the outside lock shaft lock post meshes with the lock post of inboard lock shaft mutually this moment.

When the mechanical lifting rod of the single screw is lifted, the lifting driving device of the pipe body is used for lifting the top pipe and the inner pipe in sequence, and the concrete process is as follows: the jacking pipe rises, the upper end face of a lower supporting plate of the jacking pipe abuts against the lower end face of the inner circumference of the lock seat on the adjacent outer side round pipe, the outer side round pipe is lifted upwards, the supporting plate lock hook on the jacking pipe lower supporting plate is matched with the inner side lock groove to be inserted into the inner side lock groove, the groove opening of the inner side lock groove is pushed to the oblique upward direction, the adjacent round pipes are radially connected, and the inner side lock shaft can rotate freely due to the fact that the outer arc-shaped groove on the outer side lock shaft lock cylinder is meshed with the lock cylinder of the inner side lock shaft at the moment, the limiting pin in the lock sleeve is matched with the limiting groove on the inner side lock shaft lock cylinder, the inner side lock shaft is limited to rotate at an angle, namely the inner side lock shaft rotates to the state that the inner arc-shaped groove is meshed with the lock cylinder of the outer side lock shaft. Then, the slot on the outer lock shaft is hooked to the inclined downward direction by the lock hook, at the moment, the outer lock shaft can freely rotate as the inner lock shaft rotates to the state that the inner arc-shaped groove is meshed with the lock column of the outer lock shaft, the limiting pin in the lock sleeve is matched with the limiting groove on the lock column of the outer lock shaft to limit the outer lock shaft to rotate at the angle, namely, the outer lock shaft rotates to the state that the outer arc-shaped groove is meshed with the lock column of the inner lock shaft. In this way, the plurality of inner pipes of the pipe body can be lifted in sequence.

When the single screw mechanical lifting rod descends, the supporting plate lock hook on the supporting plate hooks the inner side lock groove opening to clockwise rotate by an angle, and then the lock hook on the adjacent inner pipe lock seat is inserted into the outer side lock groove opening of the adjacent inner side circular pipe lock seat to realize the axial connection of the adjacent circular pipes.

The utility model provides an intertube interlocking device, radial connection rely on inboard locked groove cooperation, the axial connection on layer board latch hook on the layer board and the inboard lock shaft lock post rely on latch hook and outside lock shaft lock post on the outside locked groove cooperation realize, radial connection and axial connection are more reliable, and the epaxial lock post of inside and outside lock as radial and axial connecting piece is not fragile.

Drawings

The present invention will be described in further detail with reference to the accompanying drawings.

Fig. 1 is a schematic main sectional view of a mechanical lifter of a single screw rod according to the present invention.

Fig. 2 is a schematic view of a split structure of the inter-pipe interlocking device of the present invention.

Fig. 3 is a schematic top view of fig. 2.

Fig. 4 is a schematic front view of the middle inner lock shaft of the present invention.

Fig. 5 is a schematic sectional view taken along line a-a in fig. 4.

Fig. 6 is a schematic right view of fig. 5.

Fig. 7 is a left side schematic view of fig. 5.

Fig. 8 is a schematic perspective view of the middle-inner lock shaft of the present invention.

Fig. 9 is a front view of the lock shaft in the outer side of the present invention.

Fig. 10 is a schematic sectional view taken along line B-B in fig. 9.

Fig. 11 is a left side schematic view of fig. 9.

Fig. 12 is a schematic right view of fig. 9.

Fig. 13 is a schematic perspective view of the lock shaft in the middle and outside of the present invention.

Fig. 14 is a schematic front view of the middle arc bottom plate of the present invention.

Fig. 15 is a side view schematic of fig. 14.

Fig. 16 is a top schematic view of fig. 14.

Fig. 17 is a schematic perspective view of the middle arc bottom plate of the present invention.

Fig. 18 is a schematic main sectional view of the two adjacent inner tubes not adjacent to the top tube of the present invention after the lifting rod is lowered.

Fig. 19 is a schematic view of the main section of the lifting rod after the lifting rod of the present invention is lifted by two adjacent inner tubes that are not adjacent to the top tube.

Detailed Description

Referring to fig. 1-19, the utility model relates to a single screw mechanical lifter, including a pipe body 100, a lifting driving device 200 and an inter-pipe interlocking device 300, the pipe body is composed of a bottom pipe 101 which is coaxially positioned at the outer side, a top pipe 103 which is positioned at the inner side and a plurality of inner pipes 102 which are positioned between the bottom pipe and the top pipe, the inter-pipe interlocking device includes a circular ring lock seat 310 and a left and a right circular arc lower support plates 350, the circular ring lock seat is arranged at the top end of each inner pipe, a circular ring upper sleeve 110 is arranged at the upper end pipe orifice of the bottom pipe, and the left and the right circular arc lower support plates are arranged at the left and the right sides of the outer pipe wall below the top pipe and the inner pipes; the lower surfaces of the left side and the right side of the lock base are respectively provided with a lock hook hole 311 parallel to the axis of the circular ring of the lock base, the circumferences of the left side and the right side of the lock base are respectively provided with a radial lock cavity 312, the lock cavity is provided with a lock cavity lock hole 313 communicated with the inner circular hole of the lock base, a lock sleeve 314 is embedded in the lock cavity, a lock shaft 315 with the axis vertical to the axis of the circular ring of the lock base is embedded in the lock sleeve, the lock shaft is provided with a lock column 316, a limiting pin 317 vertical to the axis of the lock shaft is arranged below the lock shaft in the lock sleeve, a section of arc-shaped limiting groove 318 matched with the limiting pin along the circumferential direction of the lock column is arranged below the lock column, and an upper baffle ring 319 is arranged at the upper end hole of the inner circular hole of the lock base; the left and right sides of the annular lock base at the upper end of the inner tube except the inner tube adjacent to the top tube are respectively provided with a locking hook 320 which is parallel to the axis of the lock base, the left and right sides of the annular upper sleeve are respectively provided with the locking hooks 320, the locking shaft 315 comprises an inner locking shaft 321 and an outer locking shaft 331 which are respectively embedded into the inner side and the outer side of the lock sleeve 314, the axes of the inner locking shaft and the outer locking shaft are parallel, are positioned in the same plane and are respectively vertical to the axis of the circular ring of the lock base, the limiting pins 317 are respectively arranged below the inner locking shaft and the outer locking shaft, the lock posts 316 are respectively arranged on the inner locking shaft and the outer locking shaft, the arc limiting grooves 318 are respectively arranged below the lock posts of the inner locking shaft 321, the inner arc grooves 322 which are engaged with the lock posts of the outer locking shaft 331 are arranged on the lock posts of the outer locking shaft 331, the outer locking shaft 332 is provided with the outer arc grooves which are engaged with the lock posts of the inner locking shaft 321, the lock cylinder of the inner lock shaft 321 is further provided with an inner lock groove 323 with a notch inclined downwards, and the lock cylinder of the outer lock shaft 331 is further provided with an outer lock groove 333 with a notch inclined upwards; a supporting plate locking hook 351 matched with the inner side locking groove 323 is arranged on the outer circumference of the circular arc-shaped lower supporting plate 350. Torsion springs 301 for rotating the notch of the inner lock groove 323 and the notch of the outer lock groove 333 downward are provided between the inner lock shaft 321 and the lock sleeve 314 and between the outer lock shaft 331 and the lock sleeve 314, respectively.

Claims (2)

1. A single screw mechanical lifting rod comprises a pipe body, a lifting driving device and an inter-pipe interlocking device, wherein the pipe body consists of a bottom pipe, a top pipe and a plurality of inner pipes, the inter-pipe interlocking device comprises an annular lock seat and a left and a right circular arc lower supporting plates, the annular lock seat is arranged at the top end of each inner pipe, an annular upper sleeve is arranged at the upper pipe orifice of the bottom pipe, and the left and the right circular arc lower supporting plates are arranged at the left and the right sides of the outer pipe wall below the top pipe and the inner pipes; the lower surfaces of the left side and the right side of the lock seat are provided with lock hook holes, the circumferences of the left side and the right side of the lock seat are provided with radial lock cavities, the lock cavities are provided with lock cavity lock holes, lock sleeves are embedded in the lock cavities, lock shafts are embedded in the lock sleeves, lock columns are arranged on the lock shafts, limit pins are arranged below the lock shafts, and arc-shaped limit grooves are arranged below the lock columns along the circumferential direction of the lock columns; the lock hook is erected on the lock seat on other inner tubes except the inner tube adjacent to the top tube, and the lock hook is also erected on the annular upper sleeve, and the lock hook is characterized in that: the lock shaft comprises an inner lock shaft and an outer lock shaft which are respectively embedded into the inner side and the outer side of the lock sleeve, the axes of the inner lock shaft and the outer lock shaft are parallel, are positioned in the same plane and are vertical to the axis of the lock seat ring, the limiting pins are arranged below the inner lock shaft and the outer lock shaft, the lock columns are respectively arranged on the inner lock shaft and the outer lock shaft, the arc-shaped limiting grooves are respectively arranged below the lock columns of the inner lock shaft and the outer lock shaft, inner arc-shaped grooves meshed with the lock columns of the outer lock shaft are formed in the lock columns of the inner lock shaft and the outer lock shaft, outer arc-shaped grooves meshed with the lock columns of the inner lock shaft are formed in the lock columns of the outer lock shaft, inner lock grooves with inclined lower notches are formed in the lock columns of the inner lock shaft, and outer lock grooves with inclined upper notches are formed in the lock columns of the outer lock shaft; and a supporting plate locking hook matched with the inner side locking groove is arranged on the outer circumference of the circular arc-shaped lower supporting plate.

2. The mechanical lifter of monofilament bar of claim 1, wherein: and torsion springs for enabling the notch of the inner locking groove and the notch of the outer locking groove to rotate downwards are respectively arranged between the inner locking shaft and the locking sleeve and between the outer locking shaft and the locking sleeve.

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