CN111152158A - Electric chest expander for maintaining oil field motor - Google Patents
Electric chest expander for maintaining oil field motor Download PDFInfo
- Publication number
- CN111152158A CN111152158A CN202010013370.4A CN202010013370A CN111152158A CN 111152158 A CN111152158 A CN 111152158A CN 202010013370 A CN202010013370 A CN 202010013370A CN 111152158 A CN111152158 A CN 111152158A
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- Prior art keywords
- claw
- outer shell
- wall
- hydraulic cylinder
- nut
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B27/00—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for
- B25B27/02—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for for connecting objects by press fit or detaching same
- B25B27/026—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for for connecting objects by press fit or detaching same fluid driven
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- Mechanical Engineering (AREA)
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Abstract
The invention relates to the technical field of oilfield motors, and discloses an electric chest expander for oilfield motor maintenance, which comprises an outer shell, wherein the inner part of the outer shell is movably connected with a hydraulic cylinder through a through hole, the inner part of the outer shell is provided with sliding grooves positioned at two sides of the through hole, the hydraulic cylinder and the outer shell are fixed outside by connecting a connecting pile and a connecting block through a screw rod and a nut, on one hand, the fixing mode can bear larger thrust compared with a threaded connecting mode, and in addition, compared with the threaded connecting mode, the whole hydraulic cylinder needs to be replaced when the hydraulic cylinder is damaged, only the nut and the screw rod need to be replaced when the hydraulic cylinder is damaged, and the use cost is greatly reduced.
Description
Technical Field
The invention relates to the technical field of oilfield motors, in particular to an electric chest expander for maintaining an oilfield motor.
Background
The oil field motor all need pull out the wheel on with the chest expander with the motor when maintaining and maintaining, accomplishes the change or the maintenance to the motor pulley and overhauls to guarantee that the running state of beam-pumping unit accords with the production demand, and this kind of chest expander is called wheel puller again, and current wheel puller usually has manual mechanical form and electronic hydraulic form, and wherein the use of electronic hydraulic form is more extensive, but current hydraulic wheel puller has following problem all the time:
1. the hydraulic cylinder in the existing hydraulic wheel extractor is adjusted up and down by rotating the thread on the outer wall of the hydraulic cylinder in the thread groove in the shell sleeve 1, but the thrust generated by the hydraulic wheel extractor in the working process is large, and the generated thrust is transmitted to the claw through the thread to extract the belt pulley, so that the thread is easy to deform and distort under the action of the large thrust, once the thread is distorted, the adjusting function is completely lost, the thrust generated by the hydraulic cylinder only has a part of component force in the axial direction of the rotating shaft of the motor to extract the belt pulley, and the rest force is changed into a force for the claw to contract towards the middle, so that the magnitude of the thrust generated by the hydraulic cylinder is necessarily larger than the magnitude of a critical value for extracting the belt pulley, the stress of the whole thread is increased, and the distortion and damage of the thread are further aggravated, the energy consumption of the device is increased, and the service life of the device is reduced.
2. The existing hydraulic wheel extractor is usually two-claw or three-claw, but because the claw of the claw-shaped hydraulic wheel extractor has a contraction tendency due to the thrust of a hydraulic cylinder in use, the claw can rotate a certain amount, so that the tip of the claw can better hook the belt pulley when the belt pulley is extracted only by being arranged into a pointed shape, and the pointed claw can damage the belt pulley due to overlarge acting force generated by the tip to the belt pulley due to overlarge pulling force caused by overlarge pulling force received by the pointed claw due to the undersize contact surface of the pointed claw and the belt pulley, so that the integrity of the belt pulley cannot be ensured, and the use cost is greatly improved.
Disclosure of Invention
The invention provides an electric chest expander for maintaining an oil field motor, which has the advantages of low energy consumption, long service life and good integrity of a pulled belt pulley and solves the problems in the background technology.
The invention provides the following technical scheme: an electric chest expander for maintaining an oil field motor comprises an outer shell, wherein the inner part of the outer shell is provided with a hydraulic cylinder through a perforated hole, the inner part of the outer shell is provided with chutes positioned at two sides of the perforated hole, the upper surface of the outer shell is fixedly connected with a connecting pile, one side of the connecting pile and the inner wall surface of the outer shell in the axial direction are positioned on the same plane, two ends of the hydraulic cylinder are respectively and fixedly provided with a connecting block capable of moving in the chutes, the connecting block is provided with a through hole penetrating through the inner wall in the axial direction of the vertical chute, the top of the hydraulic cylinder is fixedly connected with an oil pipe, the outer wall of the outer shell is uniformly and fixedly provided with three cross rods at equal intervals, the front of the cross rods are fixedly provided with connecting short rods at equal intervals, the connecting short rods are movably connected with claw walls through, the threaded groove threaded connection that the briquetting seat was seted up through its inside running through has the screw rod, the bottom fixed mounting of screw rod has the clamp plate, one side fixed mounting that the bottom of claw wall is close to outer shell has the claw head, the last fixed surface of claw head installs the protection cushion, the belt pulley has been placed in the upper surface activity of protection cushion, the belt pulley passes through interference fit and connects in motor shaft.
Preferably, the connecting pile and the connecting block are movably connected through a nut and a nut penetrating through the through hole.
Preferably, the jaw head is perpendicular to the jaw wall and has a length greater than the diameter of the pressure plate.
Preferably, the cross rod is vertically installed on the outer wall of the outer shell, the claw wall is perpendicular to the cross rod and fixedly installed through a nut, and the cross rod, the claw wall and the claw head form a concave pulling claw structure.
The invention has the following beneficial effects:
1. this oil field motor is maintained and is used electric chest expander, through the mode that will connect stake and connecting block utilization screw rod and nut are connected, realize that pneumatic cylinder and shell cover are fixed externally, this kind of fixed mode is compared and is utilized the thrust that the connected mode of screw thread can bear bigger on the one hand, and compare the mode in threaded connection need change the mode of whole pneumatic cylinder when damaging, this structure only need change nut and screw rod when damaging can, greatly reduced use cost, there is the horizontal pole at the perpendicular fixed mounting in the outside of shell cover simultaneously, and be connected with the claw wall through connecting the quarter butt perpendicularly on the horizontal pole, make the direction of motion of the mechanism of pulling out of whole wheel puller become with the axis coincidence of motor shaft, the size that has realized pneumatic cylinder thrust equals the critical value size that the belt pulley was pulled out, further reduce use cost.
2. This oil field motor is maintained and is used electric chest expander, because the form that will pull the structure and set to being on a parallel with motor shaft axis, just so can set up the claw head horizontal and its length can extend to near the inner circle of belt pulley, make the power that the pneumatic cylinder produced can more distribute to the radial of belt pulley, take place because the edge receives too big power and leads to the condition of edge bending deformation with avoiding the belt pulley, the area of claw head and belt pulley contact has also been increased simultaneously, also can not make the part of belt pulley cause the damage because pressure is too big, the integrity of belt pulley has been guaranteed.
Drawings
FIG. 1 is a schematic diagram of a prior art structure;
FIG. 2 is a schematic structural view of the present invention;
FIG. 3 is a schematic view of a structural outer shell of the present invention;
FIG. 4 is a schematic view of the connection between the cross bar and the short bar according to the present invention.
In the figure: 1. an outer shell; 2. a chute; 3. connecting piles; 4. a hydraulic cylinder; 5. connecting blocks; 6. an oil pipe; 7. a through hole; 8. a cross bar; 9. connecting a short rod; 10. a jaw wall; 11. a pressing block seat; 12. a screw; 13. pressing a plate; 14. a claw head; 15. protecting the soft cushion; 16. a belt pulley; 17. a motor shaft.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 2-4, an electric chest expander for maintaining an oil field motor comprises an outer casing 1, a hydraulic cylinder 4 is movably connected inside the outer casing 1 through a perforated hole, a sliding chute 2 is arranged inside the outer casing 1 and located at two sides of the perforated hole, a connecting pile 3 is fixedly connected to the upper surface of the outer casing 1, one side of the connecting pile is coplanar with the inner wall surface of the sliding chute 2 in the axial direction of the outer casing 1, connecting blocks 5 capable of moving in the sliding chute 2 are fixedly installed at two ends of the hydraulic cylinder 4 respectively, a through hole 7 penetrating the sliding chute 2 is arranged on each connecting block 5, an oil pipe 6 is fixedly connected to the top of the hydraulic cylinder 4, three cross bars 8 are uniformly and fixedly installed at equal intervals on the outer wall of the outer casing 1, connecting short bars 9 are fixedly installed at equal intervals on the front surfaces of the cross bars 8, a claw wall 10 is movably connected to the connecting short bars 9 through a nut, and a pressure block seat 11, the threaded groove threaded connection that the briquetting seat 11 was seted up through its inside running through has screw rod 12, and the bottom fixed mounting of screw rod 12 has clamp plate 13, and one side fixed mounting that the bottom of claw wall 10 is close to outer shell 1 has claw head 14, and the last fixed surface of claw head 14 installs protection cushion 15, and belt pulley 16 has been placed in protection cushion 15's upper surface activity, and belt pulley 16 passes through interference fit and connects on motor shaft 17.
Wherein, connecting pile 3 and connecting block 5 pass through 7 inside swing joint of through-hole through nut and nut, replace the threaded connection mode of outer shell 1 and pneumatic cylinder 4 through this connected mode, improved the joint strength between outer shell 1 and the pneumatic cylinder 4 on the one hand, improve the thrust of the pneumatic cylinder that it can bear, this connected mode of on the other hand when damaging as long as change nut and nut can, avoided traditional mode that will change whole pneumatic cylinder, greatly reduced use cost.
Wherein, claw 14 is perpendicular to claw wall 10 and its length is greater than the diameter of clamp plate 13, through the design of horizontal claw 14, and thereby increased its length and increased the area of contact of claw 14 and belt pulley 16, make the mode of contact of claw 14 and belt pulley 16 change into great face contact by traditional point contact, reduce claw 14 to the damage of belt pulley 16, and push down belt pulley 16 through clamp plate 13, guarantee can not cause the injury to the pneumatic cylinder even personnel because the inside too big power that accumulates upspring in the moment that belt pulley 16 is pulled out, the security has been improved.
The cross rod 8 is vertically arranged on the outer wall of the outer shell sleeve 1, the claw wall 10 is perpendicular to the cross rod 8 and fixedly arranged through a nut, the cross rod 8, the claw wall 10 and the claw head 14 form a concave claw pulling structure, due to the limitation of the vertical positions of the cross rod 8, the claw wall 10 and the claw head 14, the thrust generated on the hydraulic cylinder 4 can be vertically transmitted to the cross rod 8 through the outer wall of the outer shell sleeve 1, the claw wall 10 is pulled through the cross rod 8, and finally the belt pulley 16 is pushed through the claw head 14, so that the force of pulling the belt pulley 16 off the hydraulic cylinder 4 is the critical value of the belt pulley 16 separated from the motor rotating shaft 17.
The working principle is that the distance between the three claw walls 10 is adjusted according to the size of the motor rotating shaft 17, the belt pulley 16 is located in the three pulling mechanisms, then the connecting part of the connecting short rod 9 and the claw walls 10 is fastened, the screw 12 is rotated again, the pressing plate 13 is tightly attached to the upper surface of the belt pulley 16, the connecting pile 3 and the connecting block 5 are fastened by the screw and the nut, the hydraulic cylinder 4 is started, the ejector rod slowly moves towards the motor rotating shaft 17, the motor rotating shaft 17 is continuously jacked after being jacked against the motor rotating shaft 17, the hydraulic cylinder drives the cross rod 8 to move towards the reverse direction of the belt pulley 16, the cross rod 8 pulls the claw walls 10 to pull the belt pulley 16 through the claw heads 14, the work is stopped when the belt pulley 16 is separated from the motor rotating shaft 17, and the pulling of the.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (4)
1. The utility model provides an oil field motor maintenance is with electronic chest expander, includes outer shell (1), its characterized in that: the inner part of the outer shell (1) is provided with a hydraulic cylinder (4) through the arranged perforation movable connection, the inner part of the outer shell (1) is provided with a sliding chute (2) positioned at two sides of the perforation, the upper surface of the outer shell (1) is fixedly connected with a connecting pile (3) with one side and the sliding chute (2) positioned at the same plane on the inner wall surface of the outer shell (1) in the axial direction, two ends of the hydraulic cylinder (4) are respectively and fixedly provided with a connecting block (5) which can move in the sliding chute (2), the connecting block (5) is provided with a through hole (7) which is vertical to the axial inner wall of the sliding chute (2) and penetrates through, the top of the hydraulic cylinder (4) is fixedly connected with an oil pipe (6), the outer wall of the outer shell (1) is uniformly and fixedly provided with three cross rods (8) at equal intervals, the front, connect and have claw wall (10) through nut swing joint on quarter butt (9), the lower part fixed mounting that claw wall (10) is close to one side of outer shell (1) has briquetting seat (11), briquetting seat (11) have screw rod (12) through its inside thread groove threaded connection who runs through the seting up, the bottom fixed mounting of screw rod (12) has clamp plate (13), one side fixed mounting that the bottom of claw wall (10) is close to outer shell (1) has claw head (14), the last fixed surface of claw head (14) installs protection cushion (15), belt pulley (16) have been placed to the last surface activity of protection cushion (15), belt pulley (16) are connected on motor shaft (17) through interference fit.
2. The electric chest expander for the maintenance of the oilfield motors as claimed in claim 1, wherein: the connecting pile (3) and the connecting block (5) are movably connected through a nut and a nut penetrating through the through hole (7).
3. The electric chest expander for the maintenance of the oilfield motors as claimed in claim 1, wherein: the claw head (14) is perpendicular to the claw wall (10) and has a length greater than the diameter of the pressure plate (13).
4. The electric chest expander for the maintenance of the oilfield motors as claimed in claim 1, wherein: the outer wall of horizontal pole (8) perpendicular installation and shell cover (1), claw wall (10) perpendicular to horizontal pole (8) pass through nut fixed mounting, horizontal pole (8), claw wall (10) and claw head (14) constitute concave claw structure of pulling out.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010013370.4A CN111152158A (en) | 2020-01-07 | 2020-01-07 | Electric chest expander for maintaining oil field motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010013370.4A CN111152158A (en) | 2020-01-07 | 2020-01-07 | Electric chest expander for maintaining oil field motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111152158A true CN111152158A (en) | 2020-05-15 |
Family
ID=70561718
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010013370.4A Pending CN111152158A (en) | 2020-01-07 | 2020-01-07 | Electric chest expander for maintaining oil field motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111152158A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112692777A (en) * | 2020-11-27 | 2021-04-23 | 岳阳大陆激光技术有限公司 | Flat head sleeve positioning ring dismounting device and positioning ring taking-out method |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8146221B2 (en) * | 2008-10-22 | 2012-04-03 | Jung-Liang Hung | Hydraulic tool |
| CN207788830U (en) * | 2018-01-31 | 2018-08-31 | 吉宏峰 | A kind of Crankpin bush puller of pumping unit |
| CN207971894U (en) * | 2018-01-03 | 2018-10-16 | 常州工程职业技术学院 | Racing car gear Quick-disassembling tool |
| CN208005578U (en) * | 2018-02-08 | 2018-10-26 | 东莞市凯勒帝数控科技有限公司 | A kind of machinery drawing horse |
| CN109262183A (en) * | 2018-12-03 | 2019-01-25 | 浙江大学昆山创新中心 | A kind of new energy battery positioning clamping device |
| CN209466184U (en) * | 2018-12-25 | 2019-10-08 | 涟源钢铁集团有限公司 | A kind of anti-falling pulley extractor |
| CN209868467U (en) * | 2019-05-15 | 2019-12-31 | 天津市永昌焊丝有限公司 | Device for disassembling bearing |
-
2020
- 2020-01-07 CN CN202010013370.4A patent/CN111152158A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8146221B2 (en) * | 2008-10-22 | 2012-04-03 | Jung-Liang Hung | Hydraulic tool |
| CN207971894U (en) * | 2018-01-03 | 2018-10-16 | 常州工程职业技术学院 | Racing car gear Quick-disassembling tool |
| CN207788830U (en) * | 2018-01-31 | 2018-08-31 | 吉宏峰 | A kind of Crankpin bush puller of pumping unit |
| CN208005578U (en) * | 2018-02-08 | 2018-10-26 | 东莞市凯勒帝数控科技有限公司 | A kind of machinery drawing horse |
| CN109262183A (en) * | 2018-12-03 | 2019-01-25 | 浙江大学昆山创新中心 | A kind of new energy battery positioning clamping device |
| CN209466184U (en) * | 2018-12-25 | 2019-10-08 | 涟源钢铁集团有限公司 | A kind of anti-falling pulley extractor |
| CN209868467U (en) * | 2019-05-15 | 2019-12-31 | 天津市永昌焊丝有限公司 | Device for disassembling bearing |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112692777A (en) * | 2020-11-27 | 2021-04-23 | 岳阳大陆激光技术有限公司 | Flat head sleeve positioning ring dismounting device and positioning ring taking-out method |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20200515 |
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| RJ01 | Rejection of invention patent application after publication |