CN211258519U

CN211258519U - Depth limiting device for rotary drilling machine

Info

Publication number: CN211258519U
Application number: CN201921920965.7U
Authority: CN
Inventors: 陈延伟; 宋琼
Original assignee: Jilin Renjia Agricultural Science And Trade Co ltd
Current assignee: Jilin Renjia Agricultural Science And Trade Co ltd
Priority date: 2019-11-08
Filing date: 2019-11-08
Publication date: 2020-08-14
Anticipated expiration: 2029-11-08

Abstract

The utility model provides a depth limiting device for a rotary digging machine, which comprises an annular limiting clamping block, wherein the annular limiting clamping block is sleeved on a rotary digging shaft of the rotary digging machine, a fastening ring and a fixing ring are arranged on the annular limiting clamping block, a ratchet wheel is arranged outside the fastening ring, a ratchet wrench is arranged at the upper right part of the ratchet wheel, the ratchet wrench comprises a long pawl and a short pawl, the hook-shaped parts of the long pawl and the short pawl face the ratchet wheel and are inserted into the ratchet of the ratchet wheel, a mandril is arranged on the fixing ring, the middle part of the mandril is rotationally connected with the fixing ring, one end of the mandril is hinged with the inner wall of the fastening ring, the other end of the mandril is provided with a fastening plate, the inner side of the fastening plate is arc-shaped, the ratchet wheel is arranged on the annular limiting clamping block to drive the mandril in the fastening ring to rotate, the rotary drilling shaft is not required to be provided with a clamping groove, a drill hole and the like, and the rotary drilling shaft is simple in structure, convenient to use and convenient to install and adjust.

Description

Depth limiting device for rotary drilling machine

Technical Field

The utility model relates to an excavator equipment technical field, in particular to dig depth stop device for machine soon.

Background

The drilling depth of a drilling tool of a rotary drilling machine is limited, so that the effective depth of a drilling hole cannot be effectively controlled by a pile driver operator, the bearing of a main part rotary joint of the drilling tool is often extruded and damaged, the water (oil) pipe is caused to be wound on a drill rod of the rotary drilling machine to break or even cause production safety accidents, and therefore a limiting device needs to be arranged on the drilling tool.

SUMMERY OF THE UTILITY MODEL

For overcoming the defects of the prior art, the utility model provides a technical scheme does: a depth limiting device for a rotary digging machine comprises an annular limiting clamping block, wherein the annular limiting clamping block is sleeved on a rotary digging shaft of the rotary digging machine, a fastening ring and a fixing ring are arranged on the annular limiting clamping block, the radius of the fixing ring is smaller than that of the fastening ring, a ratchet wheel is arranged outside the fastening ring, a ratchet wheel wrench is arranged at the upper right side of the ratchet wheel and comprises a driving motor, a rotating shaft is arranged on the driving motor, the end part of the rotating shaft is fixedly connected with the middle part of a rocker, the rocker is vertically arranged, a long pawl is rotatably connected with the top end of the rocker, a short pawl is rotatably connected with the bottom end of the rocker, the bottom ends of the long pawl and the short pawl are both provided with hook-shaped parts, the hook-shaped parts of the long pawl and the short pawl face the ratchet wheel and are inserted into the ratchet wheel, a, one end of the ejector rod is hinged to the inner wall of the fastening ring, the other end of the ejector rod is provided with a fastening plate, the inner side of the fastening plate is arc-shaped, and the fastening plate is provided with a plurality of evenly distributed holes in the fixing ring.

Preferably, the bottom ends of the long pawl and the short pawl are spaced by one ratchet tooth.

Preferably, a rubber gasket is bonded to the inner side of the fastening plate.

Preferably, when a tangent line at the hinged position of the ejector rod and the inner wall of the fastening ring is perpendicular to the ejector rod, the gasket on the inner side of the fastening plate is attached to a rotary digging shaft of the rotary digging machine.

The beneficial effects of the utility model are embodied in the following aspect:

the utility model discloses a be provided with the ratchet on the spacing fixture block of annular, drive the ejector pin rotation in the tight loop, ejector pin tip mounting plate rotates, adjusts the mounting plate and digs soon the position of digging the axle soon of digging the machine, the mounting plate is provided with a plurality ofly, will dig the axle soon and embrace the fastening, plays limiting displacement, need not dig the axle soon and set up draw-in groove and drilling etc. simple structure, convenient to use, easy to assemble and adjusting position.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention.

In the shown drawing, an annular limiting clamping block 1, a fastening ring 2, a fixing ring 3, a ratchet wheel 4, a driving motor 5, a rotating shaft 6, a rocker 7, a long pawl 8, a short pawl 9, a ratchet 10, a mandril 11, a fastening plate 12, a rubber gasket 13 and a rotary digging shaft 14.

Detailed Description

The present invention is further described in detail below with reference to the drawings so that those skilled in the art can implement the invention with reference to the description.

As shown in fig. 1, the utility model provides a technical scheme does: a depth limiting device for a rotary digging machine comprises an annular limiting clamping block 1, the annular limiting clamping block is sleeved on a rotary digging shaft 14 of the rotary digging machine, a fastening ring 2 and a fixing ring 3 are arranged on the annular limiting clamping block 1, the radius of the fixing ring 3 is smaller than that of the fastening ring 2, a ratchet wheel 4 is arranged outside the fastening ring 2, a ratchet wrench is arranged at the upper right of the ratchet wheel 4 and comprises a driving motor 5, a rotating shaft 6 is arranged on the driving motor 5, the end part of the rotating shaft 6 is fixedly connected with the middle part of a rocker 7, the rocker 7 is vertically arranged, the top end of the rocker 7 is rotatably connected with a long pawl 8, the bottom end of the rocker 7 is rotatably connected with a short pawl 9, the bottom ends of the long pawl 8 and the short pawl 9 are both arranged in a hook shape, a distance between the bottom ends of the long pawl 8 and the short pawl 9 is inserted into one hook-shaped ratchet 10 of the ratchet wheel 4, the long pawl 8, the fixing ring is characterized in that an ejector rod 11 is arranged on the fixing ring 3, the middle of the ejector rod 11 is rotatably connected with the fixing ring 3, one end of the ejector rod 11 is hinged to the inner wall of the fastening ring 2, a fastening plate 12 is arranged at the other end of the ejector rod, the inner side of the fastening plate 12 is arc-shaped, the fastening plate 12 is provided with a plurality of evenly distributed parts in the fixing ring 3, a rubber gasket 13 is bonded on the inner side of the fastening plate 12, and the rubber gasket 13 can slightly adjust the distance between the fastening plate 12 and the rotary excavating shaft 14 to enable the fastening plate and the rotary excavating. When a tangent line at the hinged position of the inner wall of the mandril 11 and the fastening ring 2 is vertical to the mandril 11, a gasket at the inner side of the fastening plate 12 is attached to a rotary digging shaft 14 of the rotary digging machine, the unidirectional intermittent motion mechanism consists of the ratchet wheel 4 and the pawls, the rocker 7 rotates clockwise under the action of the driving motor 5, the long pawl 8 pulls the ratchet 10 on the ratchet wheel 4 to rotate the ratchet wheel 4, the short pawl 9 moves for a length of 10 units of ratchet wheel in the opposite direction, the rocker 7 rotates anticlockwise under the action of the driving motor 5, the short pawl 9 pulls the ratchet 10 on the ratchet wheel 4 to rotate the ratchet wheel 4, the long pawl 8 moves for a length of 10 units of ratchet wheel in the opposite direction, the ratchet wheel 4 is repeatedly driven to rotate, the mandril 11 is driven to rotate by the rotation of the mandril 11, and the middle part of the mandril 11 is rotationally connected with the fixing ring 3, the mandril 11 changes the angle under, the utility model discloses a quick-witted, including the ejector pin 11, the mounting plate 12 of tip, adjust the mounting plate 12 and dig the position of the axle 14 soon with revolving of digging the machine soon, the mounting plate 12 is provided with a plurality ofly, because the ejector pin 11 is perpendicular with ejector pin 11 with the tangent line of the articulated department of inner wall of tight loop 2 the inboard gasket of mounting plate 12 pastes with the axle 14 soon of digging the machine soon, keeps away from when mounting plate 12 changes the angle and digs the axle 14 soon on one side, and one side is close to and digs axle 14 soon, one side that mounting plate 12 is close to and digs axle 14 soon will dig axle 14 and embrace the fastening, play limiting displacement, need not setting up draw-in groove and drilling etc. revolving soon axle 14.

While embodiments of the invention have been disclosed above, it is not intended to be limited to the applications listed in the specification and the examples. It can be applicable to various and be fit for the utility model discloses a field completely. Additional modifications will readily occur to those skilled in the art. The invention is therefore not to be limited to the specific details and illustrations shown and described herein, without departing from the general concept defined by the claims and their equivalents.

Claims

1. A depth limiting device for a rotary digging machine is characterized by comprising an annular limiting clamping block, wherein the annular limiting clamping block is sleeved on a rotary digging shaft of the rotary digging machine, a fastening ring and a fixing ring are arranged on the annular limiting clamping block, the radius of the fixing ring is smaller than that of the fastening ring, a ratchet wheel is arranged outside the fastening ring, a ratchet wheel wrench is arranged on the upper right side of the ratchet wheel and comprises a driving motor, a rotating shaft is arranged on the driving motor, the end part of the rotating shaft is fixedly connected with the middle part of a rocker, the rocker is vertically arranged, the top end of the rocker is rotatably connected with a long pawl, the bottom end of the rocker is rotatably connected with a short pawl, the bottom ends of the long pawl and the short pawl are both arranged in a bent shape, the bent shapes of the long pawl and the short pawl face the ratchet wheel and are inserted into the ratchet wheel, a mandril is arranged, one end of the ejector rod is hinged to the inner wall of the fastening ring, the other end of the ejector rod is provided with a fastening plate, the inner side of the fastening plate is arc-shaped, and the fastening plate is provided with a plurality of evenly distributed holes in the fixing ring.

2. The depth limiting device for the rotary drilling machine as claimed in claim 1, wherein a ratchet is arranged between the bottom ends of the long pawl and the short pawl at a distance.

3. The depth limiting device for the rotary drilling rig according to claim 1, wherein a rubber gasket is bonded on the inner side of the fastening plate.

4. The depth limiting device for the rotary drilling machine as claimed in claim 3, wherein when a tangent line at a hinged position of the ejector rod and the inner wall of the fastening ring is perpendicular to the ejector rod, the gasket on the inner side of the fastening plate is attached to a rotary drilling shaft of the rotary drilling machine.