CN208900048U

CN208900048U - A kind of drilling rod for drilling machine hydraulic clamp

Info

Publication number: CN208900048U
Application number: CN201821534180.1U
Authority: CN
Inventors: 赵正均; 赵巍
Original assignee: CHONGQING ZHAOWEI MINE ELECTRO- MECHANICAL MANUFACTURING Co Ltd
Current assignee: CHONGQING ZHAOWEI MINE ELECTRO- MECHANICAL MANUFACTURING Co Ltd
Priority date: 2018-09-19
Filing date: 2018-09-19
Publication date: 2019-05-24
Anticipated expiration: 2028-09-19

Abstract

The utility model discloses a kind of drilling rod for drilling machine hydraulic clamps, including passing through the sequentially connected force transmiting disk of bolt, chuck body and fixed plate, at least one sealed connecting component is equipped on the force transmiting disk, oil transportation channel is offered in the sealed connecting component, multiple clamping slips are equipped at the center of the chuck body, chamber is offered on the chuck body, piston for pushing the clamping slips mobile is installed in the chamber, the pressing plate for fixing to the piston is connected on the outer wall of the chuck body, it is also provided on the chuck body for oil duct, this is connected to form the oil supply gallery of the piston for oil duct with the oil input channel on the oil transportation channel and force transmiting disk, multiple groups sealing element is equipped on the inner wall of the outer wall of the piston and the chamber, it has been abutted between the piston and the inside bottom of chamber Reset spring.Its remarkable result is: structure is simple, clamping force is strong, practical reliable, easy to maintain.

Description

A kind of drilling rod for drilling machine hydraulic clamp

Technical field

The utility model relates to arrive borer drill rod clamping device technical field, and in particular to a kind of drilling rod for drilling machine hydraulic clip Tight device.

Background technique

It in the drilling machine course of work, needs to be clamped drilling rod, make it have transmitting rotation torque and unclamps drilling rod function Can, to realize this function, existing device substantially takes the device of two kinds of structures:

First is that disk spring clamping device, is pacified as shown in Figure 1, being pushed using elastic force caused by disk spring compressive deformation Equally distributed slip slips carrys out clamping drilling rod to center movement in drilling machine rotary shaft；If hydraulic oil by channel into When entering on the right of piston, piston is pushed to compress disc spring, while piston driving slip card to the left under the pressure effect of hydraulic oil It watt moves up realization and unclamps drilling rod；Slip slips clamps drilling rod again after hydraulic fluid pressure disappears；

Second is that gum cover clamping device, referring to attached drawing 2 and attached drawing 3, hydraulic oil enters the annular around gum cover by oil inlet Oil pocket, gum cover generates contraction distortion promotion slip slips and moves inward under the pressure effect of hydraulic oil, realizes to drilling rod Clamping；After hydraulic fluid pressure disappearance, under the elastic force effect of spring, slip slips is displaced outwardly realization and unclamps brill Bar.

However, the clamping device of above two structure when in use the problem is that: when disk spring clamping device is long Between when working, the fatigue deformation of disk spring causes it to want when drilling rod work is gradually become smaller or even be not achieved to the chucking power of drilling rod The chucking power asked needs irregularly to replace disk spring；Gum cover clamping device at work hydraulic oil to gum cover it is continuous pressurization, Pressure release causes gum cover to damage in a short time, need to often replace gum cover, at the same keep slip slips unclamp spring it is long when Work also result in its elastic force decline, cause slip slips pine do not spud in bar the case where, it is also desirable to spring is often replaced.

In addition, two kinds of above-mentioned common borer drill rod clamping devices, all bring additional work in various degree in use It measures, reduces drilling machine utilization rate, increase operator's labor intensity.

Summary of the invention

In view of the deficiencies of the prior art, the purpose of the utility model is to provide a kind of drilling rod for drilling machine hydraulic clamp, The apparatus structure is simple, clamping force is strong, practical reliable, easy to maintain.

In order to achieve the above objectives, the technical solution adopted in the utility model is as follows:

A kind of drilling rod for drilling machine hydraulic clamp, key are: including passing through the sequentially connected force transmiting disk of bolt, card Disk body and fixed plate are equipped at least one sealed connecting component on the force transmiting disk, it is logical that oil transportation are offered in the sealed connecting component Road is equipped with multiple clamping slips at the center of the chuck body, offers chamber on the chuck body, be equipped in the chamber Piston for pushing the clamping slips mobile, is connected with for limiting to the piston on the outer wall of the chuck body Fixed pressing plate is also provided with for oil duct on the chuck body, this is on oil duct and the oil transportation channel and force transmiting disk Oil input channel is connected to form the oil supply gallery of the piston, is equipped with multiple groups on the inner wall of the outer wall of the piston and the chamber Sealing element has abutted reset spring between the piston and the inside bottom of chamber.

Further, the cavity for assembling the reset spring is offered on the piston.

Further, helicitic texture or the groove profile knot with T type structure are used between the piston and the clamping slips Structure is connected.

Further, the section of the chamber is in step type, and size is gradually reduced the chamber from outside to inside, the fuel feeding Road is connected with the top of the chamber.

Further, the sealed connecting component is connected by external screw thread or bolt with the force transmiting disk.

Further, multiple clamping slips are uniformly distributed in same circumference, the number of the piston and sealed connecting component Amount is consistent with slips is clamped.

The remarkable result of the utility model is: the present apparatus can be used in existing drilling machine especially coal mine on rotary rig, Its structure is simple, clamping force is strong, practical reliable, easy to maintain；It avoids and needs to be replaced frequently showing for components in traditional technology As maintenance is more convenient, and maintenance cost is also less expensive, and will not bring additional work amount in use, improves drilling machine Utilization rate reduces operator's labor intensity.

Detailed description of the invention

Fig. 1 is the structural schematic diagram of disk spring clamping device；

Fig. 2 is the structural schematic diagram of gum cover clamping device；

Fig. 3 is the cross-sectional view of gum cover clamping device；

Fig. 4 is the structural schematic diagram of the utility model；

Fig. 5 is the cross-sectional view of the utility model；

Fig. 6 is the structural schematic diagram of the sealed connecting component in one embodiment；

Fig. 7 is the structural schematic diagram of the sealed connecting component in another embodiment；

Fig. 8 is the structural schematic diagram of the piston in one embodiment；

Fig. 9 is the structural schematic diagram of the piston in another embodiment.

Specific embodiment

Specific embodiment of the present utility model and working principle are described in further detail with reference to the accompanying drawing.

As shown in figs. 4 and 5, a kind of drilling rod for drilling machine hydraulic clamp comprising:

- force transmiting disk 1 is bolted part and associate member and chuck for connecting drilling machine rotary shaft and chuck body 8 Body 8 is fixed together, and rotates axis connection by mating associate member and drilling machine, opens up the oil input channel 2 of promising 5 fuel feeding of piston thereon (consistent with the quantity of piston 5) and its attached sealing element；

- piston 5 has the sealing element for ensuring sealing function, and offer interior for pushing the movement for clamping slips 7 thereon If piston 5 is pushed to drive the cavity 11 for clamping the reset spring 12 that slips 7 moves up, high pressure liquid pressure oil is acted on piston 5 When portion, 5 compression reseting spring 12 of piston drives clamping slips 7 to move inward, and clamps drilling rod, and high-pressure and hydraulic oil pressure disappears When, reset spring 12 pushes piston 5 that clamping slips 7 is driven to be displaced outwardly, and unclamps drilling rod；

- pressing plate 6 is realized the sealing to 5 end face of piston, is had thereon and chuck body 8 for fixing to piston 5 The bolt hole that is connected to a fixed ensures the one or more groups of sealing elements sealed, with the bolt hole of piston 5 convenient for assembly and sealing Part；

- fixed plate 13 realizes the limit to 7 end face of slips is clamped, passes through bolt for preventing clamping slips 7 from falling off It is connected with chuck body 8, the hole for having the bolt hole being connected with chuck body 8 thereon and drilling rod being allowed to pass through；

- chuck body 8 connects each building block, offers the chamber 10 for installing the piston 5, and is equipped with and ensures to live Plug 5, the corresponding structure for clamping the movement of slips 7, connection screw thread hole of connecting components etc..

Referring to attached drawing 4, the section of the preferably described chamber 10 is in step type, and size gradually subtracts the chamber 10 more from outside to inside It is small, it is described to be connected for oil duct 9 with the top of the chamber 10.

In this example, four clamping slips 7 are uniformly distributed in same circumference, as shown in figure 3, the piston 5 and sealing The quantity of connector 3 is consistent with slips 7 is clamped.

In order to ensure the connection sealed reliable for oil duct 9 on the oil input channel 2 and chuck body 8 on force transmiting disk 1, it is tightly connected Oil transportation channel 4 is offered on part 3 and ensures the structure and sealing element of its sealing, can be adopted between the sealed connecting component 3 and force transmiting disk 1 With helicitic texture F connection, as shown in Figure 6；The sealed connecting component 3 can also be used bolt group and be connected by connecting hole G and force transmiting disk 1 It connects, as shown in Figure 7.

In the present embodiment, in order to ensure the connection reliability between the piston 5 and clamping slips 7, piston 5 and clamping T-type structure H connection as shown in Figure 8 can be used between slips 7, helicitic texture I as shown in Figure 9 can also be used and be connected.

The working principle of this programme are as follows:

Hydraulic oil is via on the oil input channel 2 on force transmiting disk 1, the oil transportation channel 4 on sealed connecting component 3 and chuck body 8 Enter the chamber 10 for the oil supply gallery that oil duct 9 forms, reaches the top of piston 5, under hydraulic fluid pressure effect, piston 5 Compression reseting spring 12 simultaneously drives clamping slips 7 mobile to 8 center of chuck body, consolidates drill-rod clamping so that clamping slips 7 It is fixed；After hydraulic fluid pressure disappearance, under the elastic force effect of reset spring 12, piston 5 is displaced outwardly, and is driven and is clamped 7 pine of slips Spud in bar.

Claims

1. a kind of drilling rod for drilling machine hydraulic clamp, it is characterised in that: including passing through the sequentially connected force transmiting disk of bolt, chuck Body and fixed plate are equipped at least one sealed connecting component on the force transmiting disk, offer oil transportation channel in the sealed connecting component, Multiple clamping slips are equipped at the center of the chuck body, offer chamber on the chuck body, installation is useful in the chamber In pushing the piston for clamping slips movement, it is connected on the outer wall of the chuck body solid for limit to the piston Fixed pressing plate is also provided with for oil duct on the chuck body, this on oil duct and the oil transportation channel and force transmiting disk into Oil duct is connected to form the oil supply gallery of the piston, and it is close to be equipped with multiple groups on the outer wall of the piston and the inner wall of the chamber Sealing has abutted reset spring between the piston and the inside bottom of chamber.

2. drilling rod for drilling machine hydraulic clamp according to claim 1, it is characterised in that: offered on the piston For assembling the cavity of the reset spring.

3. drilling rod for drilling machine hydraulic clamp according to claim 1 or 2, it is characterised in that: the piston with it is described It clamps and is connected between slips using helicitic texture or the trench structure with T-type structure.

4. drilling rod for drilling machine hydraulic clamp according to claim 1, it is characterised in that: the section of the chamber is in rank Ladder type, and size is gradually reduced the chamber from outside to inside, it is described to be connected for oil duct with the top of the chamber.

5. drilling rod for drilling machine hydraulic clamp according to claim 1, it is characterised in that: the sealed connecting component passes through External screw thread or bolt are connected with the force transmiting disk.

6. drilling rod for drilling machine hydraulic clamp according to claim 1, it is characterised in that: multiple clamping slips are equal Even to be distributed in same circumference, the piston is consistent with slips is clamped with the quantity of sealed connecting component.