CN113501445A - Floor holding pole - Google Patents
Floor holding pole Download PDFInfo
- Publication number
- CN113501445A CN113501445A CN202110866506.0A CN202110866506A CN113501445A CN 113501445 A CN113501445 A CN 113501445A CN 202110866506 A CN202110866506 A CN 202110866506A CN 113501445 A CN113501445 A CN 113501445A
- Authority
- CN
- China
- Prior art keywords
- holding pole
- nut
- screw
- holding
- fixed plate
- 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.)
- Pending
Links
- 238000013016 damping Methods 0.000 claims abstract description 44
- 239000000178 monomer Substances 0.000 claims abstract description 19
- 230000000087 stabilizing effect Effects 0.000 claims abstract description 19
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 7
- 230000035939 shock Effects 0.000 abstract description 15
- 238000010276 construction Methods 0.000 abstract description 4
- 238000003466 welding Methods 0.000 description 4
- 238000010521 absorption reaction Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C23/00—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
- B66C23/62—Constructional features or details
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B35/00—Screw-bolts; Stay-bolts; Screw-threaded studs; Screws; Set screws
- F16B35/04—Screw-bolts; Stay-bolts; Screw-threaded studs; Screws; Set screws with specially-shaped head or shaft in order to fix the bolt on or in an object
- F16B35/041—Specially-shaped shafts
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B39/00—Locking of screws, bolts or nuts
- F16B39/02—Locking of screws, bolts or nuts in which the locking takes place after screwing down
- F16B39/12—Locking of screws, bolts or nuts in which the locking takes place after screwing down by means of locknuts
- F16B39/16—Locking of screws, bolts or nuts in which the locking takes place after screwing down by means of locknuts in which the screw-thread of the locknut differs from that of the nut
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B7/00—Connections of rods or tubes, e.g. of non-circular section, mutually, including resilient connections
- F16B7/18—Connections of rods or tubes, e.g. of non-circular section, mutually, including resilient connections using screw-thread elements
- F16B7/182—Connections of rods or tubes, e.g. of non-circular section, mutually, including resilient connections using screw-thread elements for coaxial connections of two rods or tubes
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/28—Counterweights, i.e. additional weights counterbalancing inertia forces induced by the reciprocating movement of masses in the system, e.g. of pistons attached to an engine crankshaft; Attaching or mounting same
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Aviation & Aerospace Engineering (AREA)
- Vibration Prevention Devices (AREA)
Abstract
The invention provides a floor holding pole, and particularly relates to the field of mechanical devices, which comprises holding pole monomers, wherein each holding pole monomer is formed by encircling a plurality of supporting rods, a plurality of reinforcing ribs are arranged on the side surfaces of the holding pole monomers, and the holding pole monomers are connected through connecting pieces; the connecting piece comprises a flange surface, stabilizing shafts are arranged on the upper side and the lower side of the flange surface, shaft holes matched with the stabilizing shafts are formed in the end surfaces of the holding rod single bodies, and the holding rod single bodies penetrate through the flange surface through bolts to be connected; and the top of the holding pole single body is provided with a damping device for preventing vibration. The invention can improve the shock resistance and the connection firmness of the landing holding pole and improve the safety of construction operation.
Description
Technical Field
The invention belongs to the field of mechanical devices, and particularly relates to a floor holding pole.
Background
The landing holding pole is a main auxiliary device for building power equipment, and is mainly used for hoisting power accessories, and the landing holding pole is high in building height, and has shock resistance and connection firmness, so that the landing holding pole is an important reference basis for safe operation, but the shock resistance and connection firmness of the existing landing holding pole are still to be further improved;
the patent with the application number of CN201810920883.6 discloses a holding pole lifting frame, which only needs to be pulled, twisted and ground to be matched with traction or lifted in the assembling process, does not need any other auxiliary equipment, has simple operation and high efficiency, saves labor force, effectively solves a plurality of problems of holding pole assembling in mountainous areas with complex terrain, and still needs to further improve the shock resistance and the connection firmness;
in view of the above-mentioned deficiencies, a ground-falling holding pole is needed, the shock resistance and the connection firmness of the ground-falling holding pole can be improved, and the safety of construction operation is improved.
Disclosure of Invention
The invention aims to provide a floor holding pole, which can improve the shock resistance and the connection firmness of the floor holding pole and improve the safety of construction operation.
The invention provides the following technical scheme:
a floor holding pole comprises a holding pole single body, wherein the holding pole single body is formed by enclosing a plurality of support rods, a plurality of reinforcing ribs are arranged on the side surface of the holding pole single body, and the holding pole single bodies are connected through a connecting piece; the connecting piece comprises a flange surface, stabilizing shafts are arranged on the upper side and the lower side of the flange surface, shaft holes matched with the stabilizing shafts are formed in the end surfaces of the holding rod single bodies, and the holding rod single bodies penetrate through the flange surface through bolts to be connected; the top of the holding pole single body is provided with a damping device for preventing vibration;
preferably, a fixing plate is arranged at the top of each holding rod monomer, the fixing plate is movably connected with the holding rod monomers, and the damping device is connected to the fixing plate.
Preferably, the lower extreme of fixed plate is equipped with the round pin post, and in the shaft hole of pole monomer terminal surface was embraced in the embedding of round pin post, pass through bolted connection between the edge of fixed plate and the pole monomer.
Preferably, the damping device comprises a damping ball, a swing rod and a universal ball, the damping ball is connected with the universal ball through the swing rod, and the upper end of the universal ball is movably connected with the fixing plate.
Preferably, the center of fixed plate is equipped with the through-hole, and universal ball tip is equipped with the limiting plate, and universal ball runs through the through-hole of fixed plate, passes through bolted connection between the edge of limiting plate and the fixed plate.
Preferably, the lower side surface of the fixing plate is provided with a limiting sleeve, and the limiting sleeve is sleeved on the periphery of the swing rod.
Preferably, the bolt comprises a screw rod and a first nut and a second nut, and the first nut and the second nut are respectively in threaded connection with the screw rod.
Preferably, the bolt further comprises a nut, a first screw and a second screw, the nut is connected with the first bolt through the second bolt, the diameter of the second screw is larger than that of the first screw, and the first nut and the second nut are respectively matched with the first screw and the second screw.
Preferably, the hole diameter of the lower end of the first nut is larger than or equal to the diameter of the second screw.
The invention has the beneficial effects that:
(1) according to the invention, the upper side and the lower side of the flange surface are provided with the stabilizing shafts, the end surfaces of the holding rod monomers are provided with the shaft holes matched with the stabilizing shafts, and the stable and firm connection can be improved through the matching of the stabilizing shafts and the shaft holes;
(2) the invention can drive the swing rod to move through the rotation of the universal ball, so that the damping ball moves, and the damping effect is further exerted;
(3) the invention adopts two nuts with different sizes for fixing, can adapt to vibration with different frequencies, and further avoids loose of one bolt and insecure connection.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is an exploded view of the present invention;
FIG. 3 is a view showing the structure of a damper;
FIG. 4 is an exploded view of the damping device;
FIG. 5 is a view showing the construction of the connector;
FIG. 6 is a view showing a structure of a bolt;
FIG. 7 is a cross-sectional view of the bolt;
labeled as: 1. a single pole holding body; 2. a support bar; 3. reinforcing ribs; 4. a connecting member; 5. a flange face; 6. a stabilizing shaft; 7. a limiting sleeve; 8. a damping ball; 9. a swing rod; 10. a universal ball; 11. a limiting plate; 12. a fixing plate; 13. a through hole; 14. a pin; 15. a damping device; 16. a first nut; 17. a second nut; 18. a first screw; 19. a second screw; 20. a nut; 21. a bolt; 22. a shaft hole; 23. a first screw hole; 24. a second screw hole; 25. and a third screw hole.
Detailed Description
As shown in fig. 1 to 7, a floor holding pole comprises a holding pole single body 1, wherein the holding pole single body 1 is formed by enclosing a plurality of support rods 2, a plurality of reinforcing ribs 3 are arranged on the side surface of the holding pole single body 1, and the above structures are all traditional holding pole structures and are not described again; the holding pole single bodies 1 are connected through connecting pieces 4; the connecting piece 4 comprises a flange face 5, the flange face 5 is matched with the holding pole single body 1, and the structure shown in the attached drawing 2 is specifically shown; the upper side and the lower side of the flange surface 5 are provided with stabilizing shafts 6, the end surface of the holding pole single body 1 is provided with shaft holes 22 matched with the stabilizing shafts 6, and the connection stability and firmness can be improved through the matching of the stabilizing shafts 6 and the shaft holes 22; the holding pole single body 1 penetrates through the flange surface 5 through a bolt 21 to be connected, so that connection is realized; the top of the holding pole single body 1 is provided with a damping device 15 for shock resistance, and the damping device 15 is used for shock absorption to improve the shock resistance; the top of the holding pole single body 1 is provided with a fixed plate 12, and the fixed plate 12 is movably connected with the holding pole single body 1, so that the holding pole single body 1 is convenient to disassemble, close and connect; the damping device 15 is attached to the fixing plate 12, and the fixing of the damping device is facilitated by the fixing plate 12. The lower extreme of fixed plate 12 is equipped with round pin post 14, and round pin post 14 imbeds in the shaft hole 22 of holding pole monomer 1 terminal surface, is connected through round pin post 14 and shaft hole 22, can improve connection stability, and the edge of fixed plate 12 and hold between the pole monomer 1 and then realize being connected through bolt 21.
Example 2
A floor holding pole comprises a holding pole single body 1, wherein the holding pole single body 1 is formed by enclosing a plurality of support rods 2, a plurality of reinforcing ribs 3 are arranged on the side surface of the holding pole single body 1, the structures are all traditional holding pole structures, and details are not repeated; the holding pole single bodies 1 are connected through connecting pieces 4; the connecting piece 4 comprises a flange face 5, the flange face 5 is matched with the holding pole single body 1, and the structure shown in the attached drawing 2 is specifically shown; the upper side and the lower side of the flange surface 5 are provided with stabilizing shafts 6, the end surface of the holding pole single body 1 is provided with shaft holes 22 matched with the stabilizing shafts 6, and the connection stability and firmness can be improved through the matching of the stabilizing shafts 6 and the shaft holes 22; the holding pole single body 1 penetrates through the flange surface 5 through a bolt 21 to be connected, so that connection is realized; the top of the holding pole single body 1 is provided with a damping device 15 for shock resistance, and the damping device 15 is used for shock absorption to improve the shock resistance; the top of the holding pole single body 1 is provided with a fixed plate 12, and the fixed plate 12 is movably connected with the holding pole single body 1, so that the holding pole single body 1 is convenient to disassemble, close and connect; the damping device 15 is attached to the fixing plate 12, and the fixing of the damping device is facilitated by the fixing plate 12.
Wherein, the lower extreme of fixed plate 12 is equipped with round pin post 14, and round pin post 14 imbeds in the shaft hole 22 of embracing pole monomer 1 terminal surface, is connected through round pin post 14 and shaft hole 22, can improve connection stability, and the edge of fixed plate 12 and embrace through bolt 21 and then realize being connected between the pole monomer 1. The damping device 15 comprises a damping ball 8, a swing rod 9 and a universal ball 10, the damping ball 8 is connected with the universal ball 10 through the swing rod 9, and the swing rod 9 can be driven to move through the rotation of the universal ball 10, so that the damping ball 8 moves, and the damping effect is exerted; the upper end of the universal ball 10 is movably connected with the fixed plate 12, so that the universal ball is convenient to disassemble and assemble. A through hole 13 is formed in the center of the fixing plate 12, a limiting plate 11 is arranged at the end part of the universal ball 10, the universal ball 10 penetrates through the through hole 13 of the fixing plate 12, and the edge of the limiting plate 11 is connected with the fixing plate 12 through a bolt 21; the damping ball 8 can be installed and fixed through the check blocks of the limiting plate 11 and the through hole 13, the damping ball is convenient to disassemble and assemble and is firmly connected and fixed, and the universal ball 10 and the limiting plate 11 can be directly connected through welding; the lower side face of the fixing plate 12 is provided with a limiting sleeve 7, the limiting sleeve 7 is sleeved on the periphery of the swing rod 9, the side wall of the limiting sleeve 7 can play a limiting role, collision between the damping ball 8 and the holding rod single body 1 is avoided, and the limiting sleeve 7 can be connected with the fixing plate 12 through welding.
Example 3
A floor holding pole comprises a holding pole single body 1, wherein the holding pole single body 1 is formed by enclosing a plurality of support rods 2, a plurality of reinforcing ribs 3 are arranged on the side surface of the holding pole single body 1, the structures are all traditional holding pole structures, and details are not repeated; the holding pole single bodies 1 are connected through connecting pieces 4; the connecting piece 4 comprises a flange face 5, the flange face 5 is matched with the holding pole single body 1, and the structure shown in the attached drawing 2 is specifically shown; the upper side and the lower side of the flange surface 5 are provided with stabilizing shafts 6, the end surface of the holding pole single body 1 is provided with shaft holes 22 matched with the stabilizing shafts 6, and the connection stability and firmness can be improved through the matching of the stabilizing shafts 6 and the shaft holes 22; the holding pole single body 1 penetrates through the flange surface 5 through a bolt 21 to be connected, so that connection is realized; the top of the holding pole single body 1 is provided with a damping device 15 for shock resistance, and the damping device 15 is used for shock absorption to improve the shock resistance; the top of the holding pole single body 1 is provided with a fixed plate 12, and the fixed plate 12 is movably connected with the holding pole single body 1, so that the holding pole single body 1 is convenient to disassemble, close and connect; the damping device 15 is attached to the fixing plate 12, and the fixing of the damping device is facilitated by the fixing plate 12. The lower extreme of fixed plate 12 is equipped with round pin post 14, and round pin post 14 imbeds in the shaft hole 22 of holding pole monomer 1 terminal surface, is connected through round pin post 14 and shaft hole 22, can improve connection stability, and the edge of fixed plate 12 and hold between the pole monomer 1 and then realize being connected through bolt 21. The damping device 15 comprises a damping ball 8, a swing rod 9 and a universal ball 10, the damping ball 8 is connected with the universal ball 10 through the swing rod 9, and the swing rod 9 can be driven to move through the rotation of the universal ball 10, so that the damping ball 8 moves, and the damping effect is exerted; the upper end of the universal ball 10 is movably connected with the fixed plate 12, so that the universal ball is convenient to disassemble and assemble. A through hole 13 is formed in the center of the fixing plate 12, a limiting plate 11 is arranged at the end part of the universal ball 10, the universal ball 10 penetrates through the through hole 13 of the fixing plate 12, and the edge of the limiting plate 11 is connected with the fixing plate 12 through a bolt 21; the damping ball 8 can be installed and fixed through the check blocks of the limiting plate 11 and the through hole 13, the damping ball is convenient to disassemble and assemble and is firmly connected and fixed, and the universal ball 10 and the limiting plate 11 can be directly connected through welding;
the limiting sleeve 7 is arranged on the lower side surface of the fixing plate 12, the limiting sleeve 7 is sleeved on the periphery of the swing rod 9, the limiting function can be achieved through the side wall of the limiting sleeve 7, collision between the damping ball 8 and the holding rod single body 1 is avoided, and the limiting sleeve 7 can be connected with the fixing plate 12 through welding; the bolt 21 comprises a screw rod and a first nut 16 and a second nut 17, the first nut 16 and the second nut 17 are respectively in threaded connection with the screw rod, and the connection firmness can be improved through the two bolts; the bolt 21 further comprises a nut 20, a first screw 18 and a second screw 19, the nut 20 is connected with the first bolt 18 through the second bolt 19, the diameter of the second screw 19 is larger than that of the first screw 18, and the first nut 16 and the second nut 17 are respectively matched with the first screw 18 and the second screw 19. The lower end aperture of the first nut 16 is greater than or equal to the diameter of the second screw 19. The two nuts with different sizes are adopted for fixing, so that the vibration at different frequencies can be adapted, and further, the problem that one bolt is loosened and connection is not firm is avoided.
Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art will understand that various changes, modifications and substitutions can be made without departing from the spirit and scope of the invention as defined by the appended claims. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (9)
1. A floor holding pole is characterized in that: the pole body is formed by encircling a plurality of support rods, a plurality of reinforcing ribs are arranged on the side face of the pole body, and the pole bodies are connected through connecting pieces; the connecting piece comprises a flange surface, stabilizing shafts are arranged on the upper side and the lower side of the flange surface, shaft holes matched with the stabilizing shafts are formed in the end surfaces of the holding rod single bodies, and the holding rod single bodies penetrate through the flange surface through bolts to be connected; and the top of the holding pole single body is provided with a damping device for preventing vibration.
2. A floor mast according to claim 1, wherein: the top of each holding pole monomer is provided with a fixed plate, the fixed plates are movably connected with the holding pole monomers, and the damping devices are connected to the fixed plates.
3. A floor mast according to claim 2, wherein: the lower extreme of fixed plate is equipped with the round pin post, and in the shaft hole of pole monomer terminal surface was embraced in the embedding of round pin post, pass through bolted connection between the edge of fixed plate and the pole monomer.
4. A floor mast according to claim 1, wherein: the damping device comprises a damping ball, a swing rod and a universal ball, the damping ball is connected with the universal ball through the swing rod, and the upper end of the universal ball is movably connected with the fixing plate.
5. A floor mast according to claim 4, wherein: the center of fixed plate is equipped with the through-hole, and universal ball tip is equipped with the limiting plate, and universal ball runs through the through-hole of fixed plate, passes through bolted connection between the edge of limiting plate and the fixed plate.
6. A floor mast according to claim 5, wherein: and the lower side surface of the fixed plate is also provided with a limiting sleeve which is sleeved on the periphery of the swing rod.
7. A floor mast according to claim 1, wherein: the bolt comprises a screw rod, a first nut and a second nut, and the first nut and the second nut are respectively in threaded connection with the screw rod.
8. A floor mast according to claim 7, wherein: the bolt further comprises a nut, a first screw and a second screw, the nut is connected with the first bolt through the second bolt, the diameter of the second screw is larger than that of the first screw, and the first nut and the second nut are respectively matched with the first screw and the second screw.
9. A floor mast according to claim 8, wherein: the aperture of the lower end of the first nut is larger than or equal to the diameter of the second screw.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110866506.0A CN113501445A (en) | 2021-07-29 | 2021-07-29 | Floor holding pole |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110866506.0A CN113501445A (en) | 2021-07-29 | 2021-07-29 | Floor holding pole |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113501445A true CN113501445A (en) | 2021-10-15 |
Family
ID=78015180
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110866506.0A Pending CN113501445A (en) | 2021-07-29 | 2021-07-29 | Floor holding pole |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113501445A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN200978192Y (en) * | 2006-11-29 | 2007-11-21 | 江苏省送变电公司 | Floor type bar holding machine |
| CN103449319A (en) * | 2013-09-06 | 2013-12-18 | 中联重科股份有限公司 | Lifting arm and crane |
| CN103726710A (en) * | 2013-12-31 | 2014-04-16 | 国家电网公司 | Lattice type derrick of electric transmission line |
| WO2016197753A1 (en) * | 2016-01-04 | 2016-12-15 | 中兴通讯股份有限公司 | Pole support base and pole system |
| CN110821264A (en) * | 2018-08-14 | 2020-02-21 | 辽宁省送变电工程有限公司 | Holding pole lifting frame and holding pole assembling method thereof |
| CN211901241U (en) * | 2020-02-21 | 2020-11-10 | 侯马经济开发区日祥科技有限公司 | Positive and negative self-locking nut device |
| CN213445918U (en) * | 2020-09-11 | 2021-06-15 | 成都起能机电工程有限公司 | Tower body structure of tower crane for construction of construction machinery |
-
2021
- 2021-07-29 CN CN202110866506.0A patent/CN113501445A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN200978192Y (en) * | 2006-11-29 | 2007-11-21 | 江苏省送变电公司 | Floor type bar holding machine |
| CN103449319A (en) * | 2013-09-06 | 2013-12-18 | 中联重科股份有限公司 | Lifting arm and crane |
| CN103726710A (en) * | 2013-12-31 | 2014-04-16 | 国家电网公司 | Lattice type derrick of electric transmission line |
| WO2016197753A1 (en) * | 2016-01-04 | 2016-12-15 | 中兴通讯股份有限公司 | Pole support base and pole system |
| CN110821264A (en) * | 2018-08-14 | 2020-02-21 | 辽宁省送变电工程有限公司 | Holding pole lifting frame and holding pole assembling method thereof |
| CN211901241U (en) * | 2020-02-21 | 2020-11-10 | 侯马经济开发区日祥科技有限公司 | Positive and negative self-locking nut device |
| CN213445918U (en) * | 2020-09-11 | 2021-06-15 | 成都起能机电工程有限公司 | Tower body structure of tower crane for construction of construction machinery |
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