CN114753797A - Well head gas production tree convenient to change - Google Patents

Well head gas production tree convenient to change Download PDF

Info

Publication number
CN114753797A
CN114753797A CN202210442479.9A CN202210442479A CN114753797A CN 114753797 A CN114753797 A CN 114753797A CN 202210442479 A CN202210442479 A CN 202210442479A CN 114753797 A CN114753797 A CN 114753797A
Authority
CN
China
Prior art keywords
gas production
production tree
pipes
replace
wellhead
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.)
Granted
Application number
CN202210442479.9A
Other languages
Chinese (zh)
Other versions
CN114753797B (en
Inventor
韩欣霖
匡茜茜
杜丽平
臧红薇
范德利
刘爱萍
孟庆国
侍超
孙斌
汤洋
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Jiangsu Jiangyuan Machinery Co ltd
Original Assignee
Jiangsu Jiangyuan Machinery Co ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Jiangsu Jiangyuan Machinery Co ltd filed Critical Jiangsu Jiangyuan Machinery Co ltd
Priority to CN202210442479.9A priority Critical patent/CN114753797B/en
Publication of CN114753797A publication Critical patent/CN114753797A/en
Application granted granted Critical
Publication of CN114753797B publication Critical patent/CN114753797B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • EFIXED CONSTRUCTIONS
    • E21EARTH OR ROCK DRILLING; MINING
    • E21BEARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B33/00Sealing or packing boreholes or wells
    • E21B33/02Surface sealing or packing
    • E21B33/03Well heads; Setting-up thereof
    • EFIXED CONSTRUCTIONS
    • E21EARTH OR ROCK DRILLING; MINING
    • E21BEARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B34/00Valve arrangements for boreholes or wells
    • E21B34/02Valve arrangements for boreholes or wells in well heads
    • E21B34/025Chokes or valves in wellheads and sub-sea wellheads for variably regulating fluid flow

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Geology (AREA)
  • Mining & Mineral Resources (AREA)
  • Physics & Mathematics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Treating Waste Gases (AREA)
  • Handcart (AREA)

Abstract

The invention relates to the technical field of gas production equipment, in particular to a wellhead gas production tree convenient to replace. Including adopting the gas tree support to and a plurality of connecting plates and a plurality of branch of rigid coupling on adopting the gas tree support, and rotate six pipes in a plurality of on a plurality of branches, and slide a plurality of bolts in six intraductal in a plurality of, six pipes can rotate in step in a plurality of. The wellhead gas production tree convenient to replace further comprises a plurality of belt wheels fixedly connected to the plurality of inner six pipes and a toothed belt driving the plurality of belt wheels to rotate synchronously. The wellhead gas production tree convenient to replace further comprises two driving wheels rotating on the gas production tree support, and the two driving wheels are in meshing transmission with the two corresponding belt wheels respectively. The advantage that can carry out well head gas production tree installation and dismantlement fast has.

Description

Well head gas production tree convenient to change
Technical Field
The invention relates to the technical field of gas production equipment, in particular to a wellhead gas production tree convenient to replace.
Background
The gas production tree refers to the part above the tubing head in a wellhead device and mainly comprises a main gate, a four-way valve, a tubing gate, a needle valve, a pressure measuring gate and a casing gate. The disadvantage of the installation is constant in daily use.
The invention discloses a wellhead gas production tree replacing device with the publication number of 214303756, and belongs to the field of oil and gas equipment. The wellhead gas production tree replacing device comprises a rail and a bearing component, wherein the bearing component comprises a gas production tree bearing plate and rollers arranged on the gas production tree bearing plate, the rollers are assembled on the rail, first connecting components are arranged at two ends of the rail, and second connecting components matched with the first connecting components are arranged on the gas production tree bearing plate. The wellhead gas production tree is pressed on the gas production tree bearing plate, the gas production tree bearing plate can be driven to move by rolling of the roller wheels on the rail, the wellhead gas production tree is immediately driven to move along the rail, and the wellhead gas production tree can be fixed at one end of the rail through the first connecting assembly and the second connecting assembly.
Disclosure of Invention
The invention aims to provide a wellhead gas production tree convenient to replace, and the wellhead gas production tree has the advantage of being capable of being mounted and dismounted quickly.
The purpose of the invention is realized by the following technical scheme:
the utility model provides a well head gas production tree convenient to change, includes the gas production tree support to and a plurality of connecting plates and a plurality of branch of rigid coupling on the gas production tree support, and rotate six pipes in a plurality of on a plurality of branch, and slide a plurality of bolts in six intraductal in a plurality of, six intraductal synchronous rotations in a plurality of.
Preferably, the wellhead gas production tree convenient to replace further comprises a plurality of belt wheels fixedly connected to the plurality of inner six pipes and a toothed belt driving the plurality of belt wheels to synchronously rotate.
Preferably, the wellhead gas production tree convenient to replace further comprises two driving wheels rotating on the gas production tree support, the two driving wheels are respectively in meshing transmission with the two belt wheels, and the two belt wheels are symmetrically arranged.
Drawings
The invention is described in further detail below with reference to the accompanying drawings and specific embodiments.
FIG. 1 is a schematic diagram of a gas tree support;
FIG. 2 is a schematic diagram of a quick install gas tree support;
FIG. 3 is a schematic view of a plurality of pulleys rotating synchronously;
FIG. 4 is a schematic view of the construction of the gas tree support for rapid movement;
FIG. 5 is a schematic view of the structure for adjusting the plurality of wheel frames to open and converge;
FIG. 6 is a schematic diagram of the structure for adjusting two pairs of wheel carriers;
FIG. 7 is a structural diagram of driving two adjusting rods to lift;
FIG. 8 is a schematic view of a structure for driving two threaded wheels to rotate;
FIG. 9 is a schematic illustration of a gas production configuration;
FIG. 10 is a schematic diagram of a wellhead gas production tree for quick installation and removal.
Detailed Description
Referring to fig. 1 and 2, the implementation process of quickly disassembling and assembling the wellhead gas production tree is described in detail:
a wellhead gas production tree convenient to replace comprises a gas production tree support 11, wherein a plurality of connecting plates 12 are fixedly connected to the gas production tree support 11, and the plurality of connecting plates 12 are fixedly connected with the wellhead gas production tree convenient to replace through bolts;
adopt a plurality of branches 14 of fixedly connected with on the gas tree support 11, a plurality of branches 14 and a plurality of connecting plate 12 one-to-one, all rotate on a plurality of branches 14 and be connected with interior six pipes 21, equal sliding connection has the bolt in a plurality of interior six pipes 21, six pipes 21 can rotate in step in a plurality of, rotate in step through a plurality of interior six pipes 21 and drive a plurality of bolts and carry out synchronous rotation and then realize quick fixed and quick the disassembling of a plurality of connecting plates 12, thereby realize quick dismantlement and the installation of well head gas tree.
With the above embodiments, the following functions can also be realized;
referring to fig. 2 and 3, the implementation process of the quick installation and disassembly of the wellhead gas production tree by the synchronous rotation of the plurality of inner six pipes is described in detail:
all fixedly connected with band pulley 22 on six pipes 21 in a plurality of, a plurality of band pulleys 22 carry out synchronous rotation through toothed belt 31, and when one of them or a plurality of in a plurality of band pulleys 22 received external drive, take place to rotate, this band pulley 22 carries out synchronous rotation through toothed belt 31 to realize that a plurality of band pulleys 22 drive six pipes 21 in a plurality of and carry out synchronous rotation, thereby realize the synchronous rotation of the bolt of a plurality of fixed gas production tree supports 11.
With the above embodiments, the following functions can also be realized;
referring to fig. 3, the implementation process of driving the plurality of inner six tubes to synchronously rotate is described in detail:
it is connected with two drive wheels 32 to rotate on the gas production tree support 11, two drive wheels 32 are fixed connection respectively on two gear motor I's output shaft, two gear motor I respectively fixed connection are on two branch 14 that correspond, two drive wheels 32 respectively with the band pulley 22 meshing transmission that corresponds separately, start two gear motor I, two gear motor I drive two drive wheels 32 and rotate, two drive wheels 32 meshing drive band pulley 22 that correspond separately rotate, it drives all the other a plurality of band pulleys 22 rotation through toothed belt 31 to obtain power and carry out pivoted band pulley 22, and then drive a plurality of interior six pipes 21 through a plurality of band pulleys 22 and carry out synchronous rotation, realize quick installation and the change of well head gas production tree.
With the above embodiments, the following functions can also be realized;
referring to fig. 4, 5 and 6, an implementation process for realizing the rapid movement of the wellhead gas production tree is described in detail:
the lower end of the gas production tree support 11 is rotatably connected with two pairs of wheel frames 41, the two wheel frames 41 of each pair of wheel frames 41 are arranged in a crossed manner, each pair of wheel frames 41 are slidably connected with an adjusting rod 51, the two adjusting rods 51 can be lifted, when the two adjusting rods 51 are lifted synchronously, the two wheel frames 41 arranged in a crossed manner are driven to rotate, so that the adjustment of convergence and extension of the wheel frames 41 is realized, a well mouth gas production tree can be supported after the plurality of wheel frames 41 are extended, the rapid movement of the well mouth gas production tree can be realized through the plurality of wheel frames 41 and wheels rotating on the wheel frames, two limiting rods 13 are fixedly connected to the gas production tree support 11, waist-shaped screw pipes 52 are slidably connected to the two limiting rods 13, springs are respectively arranged between the two waist-shaped screw pipes 52 and the corresponding adjusting rods 51, the two waist-shaped screw pipes 52 are respectively slid in the two limiting rods 13, the two adjusting rods 51 are slidably connected to the two waist-shaped screw pipes 52, when the two waist-shaped spiral pipes 52 are stressed to descend, the plurality of wheel frames 41 firstly contact the ground, when the waist-shaped spiral pipes 52 continue to descend, the springs are firstly compressed, when the springs are compressed to the limit, the two waist-shaped spiral pipes 52 push the two adjusting rods 51 to descend, the two pairs of wheel frames 41 are pushed to adjust, then the plurality of wheel frames 41 support the wellhead gas production tree, the wellhead gas production tree can move quickly, when the two waist-shaped spiral pipes 52 are stressed to ascend, the two adjusting rods 51 are driven to ascend, then the plurality of wheel frames 41 are driven to converge, further, the connection of the plurality of connecting plates 12 and the installation position of the wellhead gas production tree is achieved, and the connecting plates are fixedly connected through the plurality of bolts.
With the above embodiments, the following functions can also be realized;
referring to fig. 7, the implementation process of driving two kidney-shaped spiral pipes to ascend and descend is described in detail:
all be connected with screwed pipe 53 on two gag lever posts 13 rotatably, two screwed pipes 53 pass through screw drive with corresponding waist shape screwed pipe 52 respectively, and when two screwed pipes 53 atress took place to rotate, two screwed pipes 53 passed through two waist shape screwed pipes 52 of screw drive to and two gag lever posts 13 are to two waist shape screwed pipe 52 pivoted restrictions, realize two waist shape screwed pipes 52 at the epaxial linear slip, and then realize two altitude mixture control of adjusting pole 51.
With the above embodiments, the following functions can also be realized;
referring to fig. 8, the implementation process of fast dismounting and transporting wellhead gas production trees is detailed:
equal fixedly connected with screw thread wheel 54 on two screwed pipe 53, two screw thread wheels 54 respectively with the drive wheel 32 meshing transmission that corresponds, when two drive wheels 32 rotate, preceding a plurality of bolts of actuating are dismantled, two screw thread wheels 54 of rethread two drive wheels 32 meshing drive rotate, drive the lift of two regulation poles 51 through two screw thread wheels 54, and then realize dismantling two pairs of wheel carriers 41 and prop the fast transportation of carrying out well head gas production tree behind the gas production tree support 11.
With the above embodiments, the following functions can also be realized;
referring to fig. 9, the implementation process of gas production by the wellhead gas production tree is described in detail:
fixedly connected with gas production pipe 61 on the gas production tree support 11, two gas production branch pipes 62 of fixedly connected with on the gas production pipe 61, fixedly connected with gas production pipe 63 on the gas production pipe 61 realizes the gas production of natural gas through gas production pipe 61, realizes the collection that has the liquid of natural gas through gas production pipe 63.
With the above embodiments, the following functions can also be realized;
with reference to fig. 5 and 10, the implementation of the process of machining the two adjustment rods, extending the service life of the two adjustment rods, is described in detail:
the lower ends of the two adjusting rods 51 are subjected to thermal refining, the lower ends of the two adjusting rods 51 are more wear-resistant after being subjected to thermal refining, and then the wear-resistant treatment of the two adjusting rods 51 is realized, so that the service life of the friction place of the two adjusting rods 51 is longer.
With the above embodiments, the following functions can also be realized;
referring to fig. 10, the implementation process for implementing the connection board installation is described in detail:
the lowest position of the plurality of wheel carriers 41 during convergence is higher than the lowest position of the plurality of connecting plates 12, so that the contact between the plurality of connecting plates 12 and the corresponding connecting positions is not influenced when the plurality of wheel carriers 41 are lifted, the interference of the installation of the plurality of connecting plates 12 caused by the plurality of wheel carriers 41 is avoided, and the rapid installation and disassembly of the wellhead gas production tree cannot be realized.
With the above embodiments, the following functions can also be realized;
referring to fig. 10, an implementation process of observing the mounting and dismounting process of the bolts fixing the plurality of connection plates is explained in detail:
it is a plurality of all be provided with the observation groove of observing the bolt on the interior six pipes 21, when driving a plurality of bolts through a plurality of interior six pipes 21 and rotate the installation and dismantle, can observe the installation condition of a plurality of bolts, simultaneously, a plurality of band pulleys 22 can not rotate under the toothed belt 31 does not carry out driven condition, and under this kind of condition, a plurality of bolts can not take place the pine and take off, and then the condition that appears well head gas production tree and rock after preventing a plurality of bolts pine and taking off takes place.

Claims (10)

1. The utility model provides a well head gas production tree convenient to change which characterized in that: including gas production tree support (11), and a plurality of connecting plates (12) and a plurality of branch (14) of rigid coupling on gas production tree support (11), and rotate a plurality of interior six pipes (21) on a plurality of branch (14) respectively, and slide a plurality of bolts in a plurality of interior six pipes (21) respectively, a plurality of interior six pipes (21) can synchronous rotation.
2. A wellhead gas production tree convenient to replace as claimed in claim 1, wherein: the device also comprises a plurality of belt wheels (22) which are respectively and fixedly connected on the inner six pipes (21) and a toothed belt (31) which drives the belt wheels (22) to synchronously rotate.
3. The easy-to-replace wellhead gas production tree of claim 2, wherein: the gas production tree further comprises two driving wheels (32) rotating on the gas production tree support (11), the two driving wheels (32) are respectively in meshing transmission with the two belt wheels (22), and the two belt wheels (22) are symmetrically arranged.
4. A wellhead gas production tree convenient to replace as claimed in claim 3, wherein: the gas production tree support is characterized by further comprising two pairs of wheel frames (41) rotating at the lower end of the gas production tree support (11), two adjusting rods (51) sliding on the two pairs of wheel frames (41), two limiting rods (13) fixedly connected to the gas production tree support (11), and two waist-shaped spiral tubes (52) sliding on the two limiting rods (13) respectively, springs are arranged between the two waist-shaped spiral tubes (52) and the corresponding adjusting rods (51) respectively, and the two waist-shaped spiral tubes (52) slide in the two limiting rods (13) respectively.
5. The wellhead gas production tree convenient to replace of claim 4, wherein: the device also comprises two threaded pipes (53) which respectively rotate on the two limiting rods (13), and the two threaded pipes (53) are respectively in threaded transmission with the corresponding kidney-shaped threaded pipes (52).
6. The wellhead gas production tree convenient to replace of claim 5, wherein: the device also comprises two threaded wheels (54) which are respectively and fixedly connected with the two threaded pipes (53), and the two threaded wheels (54) are respectively in meshing transmission with the corresponding driving wheels (32).
7. A wellhead gas production tree convenient to replace as claimed in claim 6, wherein: the gas production device also comprises a gas production pipe (61) fixedly connected on the gas production tree bracket (11), two gas production branch pipes (62) fixedly connected on the gas production pipe (61), and a gas production pipe (63) fixedly connected on the gas production pipe (61).
8. The wellhead gas production tree convenient to replace of claim 4, wherein: the lower ends of the two adjusting rods (51) are subjected to quenching and tempering.
9. The wellhead gas production tree convenient to replace of claim 4, wherein: the lowest position of the wheel frames (41) when being folded is higher than the lowest position of the connecting plates (12).
10. A wellhead gas production tree convenient to replace as claimed in claim 1, wherein: and observation grooves for observing bolts are formed in the six inner pipes (21).
CN202210442479.9A 2022-04-25 2022-04-25 Wellhead gas production tree convenient to change Active CN114753797B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202210442479.9A CN114753797B (en) 2022-04-25 2022-04-25 Wellhead gas production tree convenient to change

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202210442479.9A CN114753797B (en) 2022-04-25 2022-04-25 Wellhead gas production tree convenient to change

Publications (2)

Publication Number Publication Date
CN114753797A true CN114753797A (en) 2022-07-15
CN114753797B CN114753797B (en) 2023-10-20

Family

ID=82332280

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202210442479.9A Active CN114753797B (en) 2022-04-25 2022-04-25 Wellhead gas production tree convenient to change

Country Status (1)

Country Link
CN (1) CN114753797B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114589583A (en) * 2022-03-24 2022-06-07 朱雪萍 Part cambered surface grinding device

Citations (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6234253B1 (en) * 1998-11-30 2001-05-22 L. Murray Dallas Method and apparatus for well workover or servicing
RU2405910C1 (en) * 2009-09-04 2010-12-10 Александр Васильевич Кустышев Method for simultaneous displacement of head valves of production tree under pressure
US20150204154A1 (en) * 2014-01-23 2015-07-23 Mcclinton Energy Group Llc Segmented locking ring for a wellhead
CN106080702A (en) * 2016-07-20 2016-11-09 江苏大学 The goods transport systems of a kind of staircase and method
CN207892579U (en) * 2018-01-21 2018-09-21 江苏苏盐阀门机械有限公司 A kind of wellhead assembly of casing head easy to disassemble
CN208073401U (en) * 2018-01-21 2018-11-09 江苏苏盐阀门机械有限公司 A kind of wellhead assembly easy to remove
CN208473747U (en) * 2018-07-05 2019-02-05 大连船舶重工集团有限公司 A kind of production tree group allocation and transportation support frame
US10605030B1 (en) * 2016-10-10 2020-03-31 Reel Power Licensing Corp. Hydraulically activated connection device
CN210655540U (en) * 2019-09-02 2020-06-02 佛山市南海区瑞联胶粘制品有限公司 Support for film rolling machine
US20200325752A1 (en) * 2019-04-09 2020-10-15 Eagle PCO, LLC Fracturing system component and assembly, and system and method for fracturing
CN112696168A (en) * 2021-01-16 2021-04-23 江苏庆海石油机械有限公司 Integral horizontal oil production wellhead assembly
CN112855057A (en) * 2021-01-16 2021-05-28 江苏苏盐阀门机械有限公司 Multi-seat quick-mounting wellhead device
CN214303756U (en) * 2020-11-13 2021-09-28 中国石油天然气股份有限公司 Wellhead gas production tree replacing device
US20210332666A1 (en) * 2020-04-24 2021-10-28 Cameron International Corporation Fracturing valve systems and methods
CN215332743U (en) * 2020-12-31 2021-12-28 常熟理工学院 Be used for oil drilling well head to compress tightly device of keeping silent
CN114233977A (en) * 2021-12-22 2022-03-25 陈柏旭 Seepage-proofing water-stopping structure for hydraulic engineering
CN114278256A (en) * 2021-12-29 2022-04-05 江苏荣嶺机械制造有限公司 Mounting frame convenient for maintenance of wellhead Christmas tree and use method

Patent Citations (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6234253B1 (en) * 1998-11-30 2001-05-22 L. Murray Dallas Method and apparatus for well workover or servicing
RU2405910C1 (en) * 2009-09-04 2010-12-10 Александр Васильевич Кустышев Method for simultaneous displacement of head valves of production tree under pressure
US20150204154A1 (en) * 2014-01-23 2015-07-23 Mcclinton Energy Group Llc Segmented locking ring for a wellhead
CN106080702A (en) * 2016-07-20 2016-11-09 江苏大学 The goods transport systems of a kind of staircase and method
US10605030B1 (en) * 2016-10-10 2020-03-31 Reel Power Licensing Corp. Hydraulically activated connection device
CN207892579U (en) * 2018-01-21 2018-09-21 江苏苏盐阀门机械有限公司 A kind of wellhead assembly of casing head easy to disassemble
CN208073401U (en) * 2018-01-21 2018-11-09 江苏苏盐阀门机械有限公司 A kind of wellhead assembly easy to remove
CN208473747U (en) * 2018-07-05 2019-02-05 大连船舶重工集团有限公司 A kind of production tree group allocation and transportation support frame
US20200325752A1 (en) * 2019-04-09 2020-10-15 Eagle PCO, LLC Fracturing system component and assembly, and system and method for fracturing
CN210655540U (en) * 2019-09-02 2020-06-02 佛山市南海区瑞联胶粘制品有限公司 Support for film rolling machine
US20210332666A1 (en) * 2020-04-24 2021-10-28 Cameron International Corporation Fracturing valve systems and methods
CN214303756U (en) * 2020-11-13 2021-09-28 中国石油天然气股份有限公司 Wellhead gas production tree replacing device
CN215332743U (en) * 2020-12-31 2021-12-28 常熟理工学院 Be used for oil drilling well head to compress tightly device of keeping silent
CN112696168A (en) * 2021-01-16 2021-04-23 江苏庆海石油机械有限公司 Integral horizontal oil production wellhead assembly
CN112855057A (en) * 2021-01-16 2021-05-28 江苏苏盐阀门机械有限公司 Multi-seat quick-mounting wellhead device
CN114233977A (en) * 2021-12-22 2022-03-25 陈柏旭 Seepage-proofing water-stopping structure for hydraulic engineering
CN114278256A (en) * 2021-12-29 2022-04-05 江苏荣嶺机械制造有限公司 Mounting frame convenient for maintenance of wellhead Christmas tree and use method

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114589583A (en) * 2022-03-24 2022-06-07 朱雪萍 Part cambered surface grinding device

Also Published As

Publication number Publication date
CN114753797B (en) 2023-10-20

Similar Documents

Publication Publication Date Title
CN103363043B (en) A kind of Belt-transmission elasticity tensioner
CN114753797A (en) Well head gas production tree convenient to change
US20180163714A1 (en) Non-beam Pumping Unit Driven by a Motor Reduction Unit
CN209536686U (en) A kind of swing device for capableing of quick winding wire ropes
CN101403129B (en) Cathode rod moving apparatus for electroplating apparatus
CN205602816U (en) Machine is worn to send by steel strand wires
CN101067367A (en) Thickened oil deep well intelligent pumping unit
CN115021477B (en) Beam-pumping unit belt pulley and motor distance adjusting device and use method thereof
CN110905895B (en) Electric telescopic rod based on rope traction
CN201650224U (en) Counter weight balanced type oil pumping unit
CA2500079C (en) Elastic couple barring apparatus
CN219673217U (en) Construction lifting speed reducer with double roller assemblies
CN201902659U (en) Manual speed-reducing device
CN209558581U (en) A kind of ceiling mounting type air cleaning unit
CN212045458U (en) Interval adjustable two roller mill roller structure
CN204747981U (en) Megawatt level blower fan wheel hub becomes oar bearing locking device
CN218988415U (en) Traction equipment for cable production
CN2861247Y (en) Petrol engine type slag collecting machine for railway side
CN219197294U (en) Swing balancing device of beam pumping unit
CN200946489Y (en) Elastic balance small size energy-saving pumping unit
CN108868705B (en) Gear rack pumping unit with gears transversely moving on sliding bars and capable of lightly adjusting balance
CN204770047U (en) Metal tubular product bender
CN114799846B (en) High-strength bolt fastening device for damper and method thereof
CN217109139U (en) Natural gas integration sled dress apparatus for producing
CN204003376U (en) Freezer compressor under-chassis rubber cushion press-in device

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant