CN216341968U - Self-balancing crown block of vertical derrick of workover rig - Google Patents
Self-balancing crown block of vertical derrick of workover rig Download PDFInfo
- Publication number
- CN216341968U CN216341968U CN202122721444.2U CN202122721444U CN216341968U CN 216341968 U CN216341968 U CN 216341968U CN 202122721444 U CN202122721444 U CN 202122721444U CN 216341968 U CN216341968 U CN 216341968U
- Authority
- CN
- China
- Prior art keywords
- crown block
- derrick
- balancing
- workover rig
- self
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Abstract
The utility model discloses a self-balancing crown block of a vertical derrick of a workover rig, which comprises a crown block frame, wherein one end of the crown block frame is provided with a rear pulley group, the outer side of the rear pulley group is provided with a connecting rope, the other end of the crown block frame is provided with a front pulley block, the middle position of the bottom of the crown block frame is provided with a crown block ear ring, the inner part of the crown block ear ring is provided with a through hole, one end of the crown block frame, which is close to the rear pulley group, is provided with a fixed pulley, the outer side of the fixed pulley is provided with a balancing rope, and a pin shaft is arranged in the through hole. The utility model discloses a crown block middle part is connected through round pin axle and derrick for the crown block can the free rotation. The front crown block wheel set and the hook form a front pulley system for lifting a wellhead load, the crown block is subjected to stress analysis, the moment generated by vertical forces on the left side and the right side is calculated by taking the pin shaft as a fulcrum, and according to the principle of moment balance, a balance force can be automatically applied to the balance rope no matter how the hook load changes.
Description
Technical Field
The utility model relates to the technical field of workover rigs, in particular to a self-balancing crown block of a vertical derrick of a workover rig.
Background
The workover rig is a common operation device for an oil field, and the workover rig or the tractor hoist is the most basic and main power source in workover and downhole operation construction; the crawler type workover rig is divided into two forms of a crawler type workover rig and a tire type workover rig according to the operation structure, the crawler type workover rig is generally not provided with a derrick, the power off-road property is good, the crawler type workover rig is suitable for construction in a low-lying muddy area, the tire type workover rig is generally provided with a self-carrying derrick, the walking speed is high, the construction efficiency is high, the crawler type workover rig is suitable for the requirement of rapid moving, and the crawler type workover rig is relatively limited in walking in the low-lying muddy area, rainy season and slurry overturning season and entering a well site.
The overhead traveling crane is required to be equipped at the top end of the non-guy rope workover rig derrick of the vertical derrick during working, the overhead traveling crane is generally connected with the derrick in a rigid manner, the overhead traveling crane is generally respectively provided with pulley blocks at the front end and the rear end, in order to balance the tension of a steel wire rope on the pulley blocks in front and at the rear, a balance fixed pulley block can be arranged on a base below the rear pulley block, a rear pulley system is formed by the rear pulley block and the balance fixed pulley block, and is balanced with a hook and a front pulley system formed by the front pulley block, the application of the rear pulley system is realized, so that the length of the steel wire rope is increased more, the mechanical transmission efficiency is reduced to some extent, and the overall reliability is reduced.
SUMMERY OF THE UTILITY MODEL
Aiming at the defects of the prior art, the utility model discloses a self-balancing crown block of a vertical derrick of a workover rig, and aims to solve the problems in the background art.
In order to achieve the purpose, the utility model is realized by the following technical scheme: a workover rig vertical derrick self-balancing crown block comprising: the overhead crane frame, the one end of overhead crane frame is provided with back pulley group, the outside of back pulley group is provided with connects the rope, the other end of overhead crane frame is provided with the front pulley group, the bottom intermediate position department of overhead crane frame is provided with the overhead crane earrings.
Preferably, a through hole is formed in the crown block ear ring, and a pin shaft is arranged in the through hole.
Preferably, the end of the crown block frame close to the rear pulley group is provided with a fixed pulley, and the outer side of the fixed pulley is provided with a balance rope.
Preferably, a derrick is arranged at the bottom of the crown block earring, and a derrick earring is installed at the top end of the derrick.
Preferably, the derrick earrings are internally provided with mounting holes matched with the pin shafts, and the derrick earrings are fixedly connected with the crown block earrings through the pin shafts.
Preferably, a large hook steel wire rope is arranged on the outer side of the front pulley block.
The utility model discloses a self-balancing crown block of a workover rig vertical derrick, which has the following beneficial effects:
the utility model discloses a crown block middle part is connected through round pin axle and derrick for the crown block can the free rotation. The front crown block wheel set and the hook form a front pulley system which is used for lifting a wellhead load, carrying out stress analysis on the crown block, calculating the moment generated by vertical forces on the left side and the right side by taking the pin shaft as a fulcrum, and automatically applying a balancing force to the balancing rope no matter how the hook load changes according to the principle of moment balance; because the derrick and the crown block are connected by the pin shaft, the derrick only bears the vertical downward pressure and is not subjected to bending moment, the stability of the derrick is better, the balance rope is connected with the crown block by the fixed pulley, so that the tension of the balance rope of the left part and the right part is completely consistent, the phenomenon of deviation is eliminated, the use number of the pulleys and the use length of a steel wire rope are reduced, the mechanical transmission efficiency is improved, and the overall reliability is also improved.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention.
In the figure: 1. a fixed pulley; 2. a rear pulley group; 3. a top frame; 4. a crown block earring; 5. a pin shaft; 6. a front pulley block; 7. a hook wire rope; 8. a derrick; 9. a derrick eye; 10. connecting ropes; 11. and (4) balancing ropes.
Detailed Description
The embodiment of the utility model discloses a self-balancing crown block of a workover rig vertical derrick, which comprises the following components as shown in figure 1:
the crane frame 3, the one end of crane frame 3 is provided with back pulley group 2, and the outside of back pulley group 2 is provided with connects rope 10, connects rope 10 and divide into the dead rope and fast rope, and the dead rope is perpendicular downwards after 2 back pulley groups are walked around to fast rope and fast rope, and the dead rope is fixed on the base, and fast rope and winch are connected, and the other end of crane frame 3 is provided with preceding assembly pulley 6, and the bottom intermediate position department of crane frame 3 is provided with crane ear ring 4.
One end of the top frame 3 close to the rear pulley group 2 is provided with a fixed pulley 1, the outer side of the fixed pulley 1 is provided with a balance rope 11, the balance rope 11 is vertically arranged, the upper part of the balance rope is wound on the fixed pulley 1, and the lower part of the balance rope is fixedly connected with the base.
The inside of overhead traveling crane earrings 4 is provided with the through-hole, is provided with round pin axle 5 in this through-hole, and the bottom of overhead traveling crane earrings 4 is provided with derrick 8, and derrick earrings 9 are installed to the top of derrick 8, and derrick 8 is connected with overhead traveling crane frame 3 through derrick earrings 9, and derrick earrings 9 are connected with overhead traveling crane earrings 4 fixed connection through round pin axle 5, are connected with overhead traveling crane frame 3 simultaneously.
The inside of derrick earrings 9 is provided with the mounting hole with round pin axle 5 looks adaptation, and derrick earrings 9 through round pin axle 5 with overhead traveling crane earrings 4 fixed connection, makes the overhead traveling crane can free rotation, and the outside of preceding assembly pulley 6 is provided with hook wire rope 7, and preceding pulley train is constituteed with hook wire rope 7 to preceding assembly pulley 6 for promote well head load.
The working principle is as follows: refer to fig. 1;
a derrick earring 9 at the top end of a derrick 8 is fixedly connected with a crown block earring 4 at the middle position of the bottom of a crown block frame 3 through a pin shaft 5, a connecting rope 10 comprises a dead rope and a fast rope, the dead rope is vertically downward after bypassing a rear pulley group 2, the dead rope is fixed with a base, the fast rope is connected with a winch, a balance rope 11 is vertically arranged, the upper part of the balance rope is wound on a fixed pulley 1, and the lower part of the balance rope is fixed on the base;
the balance rope 11 is connected with the crown block frame 3 through the fixed pulley 1, so that the tension of the balance rope 11 at the left part and the tension of the balance rope at the right part are completely consistent, the phenomenon of deviation is eliminated, the derrick 8 is connected with the crown block frame 3 through the pin shaft 5, the force borne by the derrick 8 is vertical downward, bending moment is not applied, and the stability of the derrick 8 is better.
The foregoing shows and describes the general principles and broad features of the present invention and advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the utility model as claimed. The scope of the utility model is defined by the appended claims and equivalents thereof.
Claims (6)
1. The utility model provides a workover rig upright derrick self-balancing overhead traveling crane which characterized in that includes:
the crane is characterized by comprising a crane frame (3), wherein one end of the crane frame (3) is provided with a rear pulley group (2), the outer side of the rear pulley group (2) is provided with a connecting rope (10), the other end of the crane frame (3) is provided with a front pulley block (6), and the middle position of the bottom of the crane frame (3) is provided with a crane earring (4).
2. The workover rig vertical derrick self-balancing crown block of claim 1, wherein: the inside of overhead traveling crane earrings (4) is provided with the through-hole, is provided with round pin axle (5) in this through-hole.
3. The workover rig vertical derrick self-balancing crown block of claim 1, wherein: a fixed pulley (1) is arranged at one end, close to the rear pulley group (2), of the overhead traveling crane frame (3), and a balance rope (11) is arranged on the outer side of the fixed pulley (1).
4. The workover rig vertical derrick self-balancing crown block of claim 1, wherein: the bottom of overhead traveling crane earrings (4) is provided with derrick (8), derrick earrings (9) are installed on the top of derrick (8).
5. The workover rig vertical derrick self-balancing crown block of claim 4, wherein: the derrick ear ring (9) is internally provided with a mounting hole matched with the pin shaft (5), and the derrick ear ring (9) is fixedly connected with the crown block ear ring (4) through the pin shaft (5).
6. The workover rig vertical derrick self-balancing crown block of claim 1, wherein: and a large hook steel wire rope (7) is arranged on the outer side of the front pulley block (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122721444.2U CN216341968U (en) | 2021-11-09 | 2021-11-09 | Self-balancing crown block of vertical derrick of workover rig |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122721444.2U CN216341968U (en) | 2021-11-09 | 2021-11-09 | Self-balancing crown block of vertical derrick of workover rig |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216341968U true CN216341968U (en) | 2022-04-19 |
Family
ID=81136965
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122721444.2U Active CN216341968U (en) | 2021-11-09 | 2021-11-09 | Self-balancing crown block of vertical derrick of workover rig |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216341968U (en) |
-
2021
- 2021-11-09 CN CN202122721444.2U patent/CN216341968U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN207419566U (en) | It is a kind of to twist the jacking system for inhaling ship | |
| CN106907132A (en) | A kind of portable balance oil extractor for coal bed gas extraction | |
| CN216341968U (en) | Self-balancing crown block of vertical derrick of workover rig | |
| CN102864770A (en) | Efficient dynamic compaction machine | |
| CN107043066A (en) | Diesel engine hoisting tool and hoisting method | |
| CN101357743A (en) | Crane hook magnification-changing mechanism of movable arm variation-amplitude crane | |
| CN201762053U (en) | Simple automatic derrick | |
| CN206769526U (en) | Jack up Multifunctional creeping gin pole | |
| CN108105041A (en) | The device of maintenance gear case and its application on tower | |
| CN211255088U (en) | Crown block device with split-type main pulley | |
| CN209908424U (en) | Simple hydraulic workover rig for offshore platform | |
| CN216341933U (en) | Wellhead supporting leg for non-guy rope workover rig | |
| CN2839225Y (en) | Lifting, the A-frame of two groups of fixed pulleys of fluctuating in a housing | |
| CN211769791U (en) | Split type lifting hook and crane thereof | |
| CN204737664U (en) | Eucalyptus logging equipment | |
| CN214273495U (en) | U-shaped lower lifting ring for drilling rig scooter | |
| CN2510616Y (en) | Derrick and drill block once-continuous starting-stopping mechanism | |
| CN214611261U (en) | Wire lifting device for full-insulation emergency repair tower | |
| CN205638281U (en) | Beam -pumping unit hair pigtail hoisting device | |
| CN204474224U (en) | There is the steel rope double end anchor fitting of micro-equilibrium function | |
| CN218562104U (en) | Cast-in-place beam bottom die and bracket integral vertical unloading device | |
| CN108128695A (en) | A kind of suspender and method for being used to lift speed changer transfer case | |
| CN219860290U (en) | Suspension type double-wheel milling machine | |
| CN207957581U (en) | A kind of novel arm end pulley gear | |
| CN214614063U (en) | Pile frame lifting device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |