Hydraulic grab card device
Technical field
The present invention relates to technical field of petroleum extraction, more particularly to a kind of hydraulic grab card device.
Background technology
Workover rig or tractor hoist are most basic, topmost power resources in well workover and Downhole Construction.By its operation
Structure is divided into two kinds of forms of crawler type and rubber-tyred.Workover rig plays the effect of key in terms of oil exploitation industry.
Hydraulic grab card device is the important component of workover rig, for catching oil pipe during being removed in oil pipe, existing
Some hydraulic grab card devices are in the course of the work, it is impossible to tilt certain angle, grab pipe inconvenience, inefficiency, security
It is low.
The content of the invention
It is simple and reasonable the present invention solves the technical problem of a kind of hydraulic grab card device is provided, integrally may be used
To tilt certain angle, be conducive to grabbing pipe, put pipe operation, operating efficiency is high, and security is good.
In order to solve the above technical problems, one aspect of the present invention is:A kind of hydraulic grab card device is provided,
Including:
Support member, the support member is fixedly connected on the elevating mechanism of workover rig;
Elevator oil cylinder, the elevator oil cylinder includes cylinder barrel and piston rod, and the rear end of the cylinder barrel and the lower end of support member are hinged,
The front portion of the cylinder barrel has a fixing card;
Rake angle oil cylinder, the external part of the rake angle oil cylinder is hinged with fixing card, and rear end and the support member of the rake angle oil cylinder are cut with scissors
Connect;
Hydraulic grab card body, the hydraulic grab card body controls it to clamp and expansion action by elevator oil cylinder;
Hydraulic grab card servo rotary mechanism, the hydraulic grab card servo rotary mechanism is arranged on elevator oil cylinder, the liquid
Pressure grabs elevator body in hydraulic grab card servo rotary mechanism so that hydraulic grab card body can surround elevator oil cylinder
Axis freely rotate.
In a preferred embodiment of the present invention, the support member includes two symmetrically arranged boatswain chairs, two boatswain chairs
Top and bottom between connected by connecting shaft.
In a preferred embodiment of the present invention, the rear end of the elevator oil cylinder is hinged on the connecting shaft positioned at boatswain chair lower end
On, and between two boatswain chairs.
In a preferred embodiment of the present invention, the hydraulic grab card servo rotary mechanism include cylinder barrel slew gear,
First piston bar slew gear and second piston bar slew gear;
The cylinder barrel slew gear is included outside the cylinder barrel bearing holder (housing, cover) for being sleeved on cylinder barrel front end, the cylinder barrel bearing holder (housing, cover) and cylinder barrel front end
Clutch shaft bearing group is installed between wall;
The First piston bar slew gear includes the First piston bar bearing holder (housing, cover) being sleeved on piston rod rear end, and described first lives
Second bearing group is provided between stopper rod bearing holder (housing, cover) and First piston bar;
The second piston bar slew gear includes the second piston rod bearing set being sleeved on piston rod front end, and described second lives
3rd bearing group is provided between stopper rod bearing holder (housing, cover) and second piston bar;
The cylinder barrel bearing holder (housing, cover) is connected as an entirety with First piston bar bearing holder (housing, cover), and the cylinder barrel front end has a support
Ring, the support ring is supported on below clutch shaft bearing group.
In a preferred embodiment of the present invention, the clutch shaft bearing group includes upper bearing (metal) and lower bearing, the upper bearing (metal)
For deep groove ball bearing, the lower bearing is thrust ball bearing.
In a preferred embodiment of the present invention, elevator rotating shaft is provided with the First piston bar bearing holder (housing, cover), it is described
Second piston rod bearing, which is put, is provided with lower elevator rotating shaft.
In a preferred embodiment of the present invention, the hydraulic grab card body includes two " 7 " font parts and two
" Z " font part, one end of two " 7 " font parts is hinged in elevator rotating shaft, and the middle part of two " Z " font parts is equal
It is hinged in lower elevator rotating shaft, the other end of one end of two " Z " font parts respectively with two " 7 " font parts is hinged on one
Rise, slips is mounted on the other end of two " Z " font parts.
In a preferred embodiment of the present invention, locking key keyway is provided with the hinge hole on described " Z " font part,
Locking key is provided with the lower elevator rotating shaft.
In a preferred embodiment of the present invention, two limiting plates are additionally provided with the upper elevator rotating shaft, it is described two
Connected between limiting plate by multiple axostylus axostyles, the lower end of the limiting plate has the circular arc being engaged with lower elevator rotating shaft spacing
Bayonet socket.
The beneficial effects of the invention are as follows:Hydraulic grab card device of the present invention, it is simple and reasonable, it can integrally tilt certain
Angle, is conducive to grabbing pipe, puts pipe operation, operating efficiency is high, and security is good.
Brief description of the drawings
Technical scheme in order to illustrate the embodiments of the present invention more clearly, makes required in being described below to embodiment
Accompanying drawing is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the present invention, for
For those of ordinary skill in the art, on the premise of not paying creative work, it can also obtain other according to these accompanying drawings
Accompanying drawing, wherein:
Fig. 1 is the structural representation of the preferred embodiment of hydraulic grab card device one of the present invention;
Fig. 2 is Fig. 1 A-A to sectional view;
Fig. 3 is Fig. 2 partial enlarged drawing;
Fig. 4 is the side view of hydraulic grab card body part in Fig. 1;
Fig. 5 is structural representation when elevator apparatus opens.
The mark of each part is as follows in accompanying drawing:1st, elevator oil cylinder, 2, cylinder barrel, 3, piston rod, 4, fixing card, 5, rake angle oil
Cylinder, 6, boatswain chair, 7, connecting shaft, 8, cylinder barrel bearing holder (housing, cover), 9, clutch shaft bearing group, 10, First piston bar bearing holder (housing, cover), 11, second bearing
Group, 12, second piston rod bearing set, 13,3rd bearing group, 14, support ring, 15, upper elevator rotating shaft, 16, lower elevator rotating shaft,
17th, " 7 " font part, 18, " Z " font part, 19, slips, 20, locking key keyway, 21, locking key, 22, limiting plate, 23, circle
Arc-shaped limit bayonet socket.
Embodiment
The technical scheme in the embodiment of the present invention will be clearly and completely described below, it is clear that described implementation
Example is only a part of embodiment of the present invention, rather than whole embodiments.Based on the embodiment in the present invention, this area is common
All other embodiment that technical staff is obtained under the premise of creative work is not made, belongs to the model that the present invention is protected
Enclose.
Fig. 1 to Fig. 5 is referred to, the embodiment of the present invention includes:
A kind of hydraulic grab card device, including:Support member, elevator oil cylinder 1, rake angle oil cylinder 5, hydraulic grab card body and hydraulic pressure
Grab elevator servo rotary mechanism.
The support member is fixedly connected on the elevating mechanism of workover rig, and the support member is symmetrical arranged including two
Boatswain chair 6, connected by connecting shaft 7 between the top and bottom of two boatswain chairs.
The elevator oil cylinder includes cylinder barrel 2 and piston rod 3, and the rear end of the cylinder barrel and the lower end of support member are hinged, and has
Body, the rear end of the elevator oil cylinder is hinged in the connecting shaft of boatswain chair lower end, and between two boatswain chairs, the cylinder
The front portion of cylinder has a fixing card 4.
The external part of the rake angle oil cylinder 5 is hinged with fixing card 4, and the rear end of the rake angle oil cylinder is hinged with support member,
Pin joint is located at the medium position of support member, and when rake angle oil cylinder is in stretching state, elevator oil cylinder is in vertical position, when
When rake angle oil cylinder is toward retraction, elevator oil cylinder can be driven to tilt certain angle, in order to capture oil pipe from tube-conveyer.
Hydraulic grab card body, the hydraulic grab card body controls it to clamp and expansion action by elevator oil cylinder;
Hydraulic grab card servo rotary mechanism, the hydraulic grab card servo rotary mechanism is arranged on elevator oil cylinder, the liquid
Pressure grabs elevator body in hydraulic grab card servo rotary mechanism so that hydraulic grab card body can surround elevator oil cylinder
Axis freely rotate.
Specifically, the hydraulic grab card servo rotary mechanism includes cylinder barrel slew gear, First piston bar slew gear
With second piston bar slew gear;
The cylinder barrel slew gear includes the cylinder barrel bearing holder (housing, cover) 8 for being sleeved on cylinder barrel front end, the cylinder barrel bearing holder (housing, cover) and cylinder barrel front end
Clutch shaft bearing group 9 is installed between outer wall;
The First piston bar slew gear includes the First piston bar bearing holder (housing, cover) 10 being sleeved on piston rod rear end, described first
Second bearing group 11 is provided between piston rod bearing sleeve and First piston bar;
The second piston bar slew gear includes the second piston rod bearing set 12 being sleeved on piston rod front end, described second
3rd bearing group 13 is provided between piston rod bearing sleeve and second piston bar;
The cylinder barrel bearing holder (housing, cover) is connected as an entirety with First piston bar bearing holder (housing, cover), and the cylinder barrel front end has a support ring
14, the support ring is supported on below clutch shaft bearing group.
Pass through the description of above-mentioned cylinder barrel slew gear, First piston bar slew gear and second piston bar slew gear, cylinder
Cylinder bearing holder (housing, cover) 8, First piston bar bearing holder (housing, cover) 10, second piston rod bearing set 12 can freely turn around the axis of elevator oil cylinder
It is dynamic.
It is preferred that, the clutch shaft bearing group include upper bearing (metal) and lower bearing, the upper bearing (metal) be deep groove ball bearing, it is described under
Bearing is thrust ball bearing.
Elevator rotating shaft 15 is provided with the First piston bar bearing holder (housing, cover), the second piston rod bearing, which is put, to be provided with
Lower elevator rotating shaft 16.
The hydraulic grab card body includes two " 7 " font parts 17 and two " Z " font parts 18, two " 7 " words
One end of type part is hinged in elevator rotating shaft, and the middle part of two " Z " font parts is hinged in lower elevator rotating shaft, and two
The other end of the one end of individual " Z " font part respectively with two " 7 " font parts is hinged, two " Z " font parts
Slips 19 is mounted on the other end.
By said structure, upper elevator rotating shaft 15, lower elevator rotating shaft 16 can follow First piston bar bearing holder (housing, cover) 10, second
Piston rod bearing sleeve 12 is freely rotated around the axis of elevator oil cylinder together, and hydraulic grab card body is mounted in elevator
In rotating shaft 15 and lower elevator rotating shaft 16, therefore, on elevator apparatus crawl oil pipe during shackle, hydraulic grab card can be with
Realization is rotated freely.
In addition, when the piston rod of elevator oil cylinder is retracted, hydraulic grab card body slowly opens, when the piston of elevator oil cylinder
When bar stretches out, hydraulic grab card body is slowly clamped.
It is preferred that, it is provided with the hinge hole on " Z " the font part in locking key keyway 20, the lower elevator rotating shaft
Locking key 21 is provided with, in order to prevent elevator from being loosened after crawl oil pipe, this, which is in lower elevator rotating shaft, devises locking key, when
When elevator is clamped, elevator oil cylinder will promote locking key to stick into keyway, the self-locking of elevator be realized, when elevator oil cylinder is received upwards
Retaining mechanism is opened therewith when returning.
It is preferred that, it is additionally provided with the upper elevator rotating shaft between two limiting plates 22, described two limiting plates by many
Individual axostylus axostyle connection, the lower end of the limiting plate has the spacing bayonet socket 23 of circular arc being engaged with lower elevator rotating shaft, when elevator oil
When cylinder is retracted, the spacing bayonet socket 23 of circular arc can block lower elevator rotating shaft, prevent excessively retraction, it is to avoid unnecessary trouble, peace
Good perfection.
The beneficial effects of the invention are as follows:Hydraulic grab card device of the present invention, it is simple and reasonable, it can integrally tilt certain
Angle, is conducive to grabbing pipe, puts pipe operation, operating efficiency is high, and security is good.
Embodiments of the invention are the foregoing is only, are not intended to limit the scope of the invention, it is every to utilize this hair
Equivalent structure or equivalent flow conversion that bright description is made, or directly or indirectly it is used in other related technology necks
Domain, is included within the scope of the present invention.