CN115899053A - Self-locking bolt structure convenient for connecting standard knot of tower crane - Google Patents
Self-locking bolt structure convenient for connecting standard knot of tower crane Download PDFInfo
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- CN115899053A CN115899053A CN202211307115.6A CN202211307115A CN115899053A CN 115899053 A CN115899053 A CN 115899053A CN 202211307115 A CN202211307115 A CN 202211307115A CN 115899053 A CN115899053 A CN 115899053A
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- 238000009434 installation Methods 0.000 abstract description 12
- 238000010276 construction Methods 0.000 abstract description 8
- 238000000034 method Methods 0.000 description 12
- 230000008569 process Effects 0.000 description 11
- 238000003780 insertion Methods 0.000 description 3
- 230000037431 insertion Effects 0.000 description 3
- 238000011900 installation process Methods 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
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Abstract
The invention discloses a self-locking bolt structure convenient for connecting a standard knot of a tower crane, which comprises a slotted optical head screw, a nut in threaded connection with the top end of the slotted optical head screw, a fixing sleeve in inserted connection and matching with the bottom end of the slotted optical head screw, a locking slide block for clamping the slotted optical head screw to the fixing sleeve, an elastic ring for limiting the locking slide block to the fixing sleeve, and a positioning pin for relatively fixing the fixing sleeve and the bolt sleeve of the standard knot. The self-locking bolt structure has the characteristics of simple structure, convenience in installation and high reliability, and can reduce the number of construction people and improve the installation efficiency.
Description
Technical Field
The invention relates to the technical field of tower cranes, in particular to a self-locking bolt structure convenient for connecting a standard knot of a tower crane.
Background
At present, the jacking of integral tower crane adds the problem that the festival in-process standard festival connects existence: in the jacking and section adding process of the integral tower crane, standard sections are generally fixedly connected through bolts and nuts in threaded connection, the bolts are installed and pre-tightened through the bolts and the nuts when the standard sections are connected through the bolts and the nuts, the bolts are installed and pre-tightened through the nuts manually, a worker generally fixes the bolt heads through a wrench in the nut installation process, and the worker completes the installation and pre-tightening of the nuts through a torque wrench. In the whole installation process, the operation position and the standing position of an installer are narrow, high-altitude operation and edge operation are performed, and two persons are inconvenient to operate. The connection between two standard sections needs to finish the installation of 8 bolts, and high-altitude operation easily disperses the construction energy of workers, so that the condition of neglected assembly of the workers sometimes occurs, and potential safety hazards are caused.
Disclosure of Invention
In view of the above, the invention provides a self-locking bolt structure convenient for connecting a standard knot of a tower crane, which has the advantages of simple structure, convenience in installation and high reliability, and can reduce the number of construction people, improve the installation efficiency, and avoid the problems of neglected loading and the like in the construction process of workers.
The invention adopts the following specific technical scheme:
the utility model provides a self-locking bolt structure convenient to connect tower crane standard festival, this self-locking bolt structure includes:
the top end of the slotted optical head screw is provided with an external thread, the bottom end of the slotted optical head screw is provided with a first chamfer, and at least two grooves are uniformly distributed on the peripheral surface of the slotted optical head screw;
the nut is provided with an internal thread matched with the external thread in a threaded manner;
the fixed sleeve is provided with a central hole which is in plug-in fit with the bottom end of the slotted optical head screw rod and concave station holes which correspond to the grooves one by one; the concave station hole is communicated with the central hole and the outer side of the fixed sleeve;
the locking sliding block is in inserted fit with the concave platform hole; the length of the locking slide block is equal to the sum of the depths of the concave platform hole and the concave groove; an arc-shaped groove is formed in the outer end face, away from the nut, of the locking sliding block;
the elastic ring is sleeved on the outer peripheral side of the fixed sleeve and elastically pressed in the arc-shaped groove;
the positioning pin is fixedly connected to the end face of one side, facing the nut, of the fixing sleeve and is used for being in inserting fit with the bolt sleeve of the standard section;
the first chamfer enables the slotted optical head screw to enter the bottom end of the central hole of the fixed sleeve through self weight; when the bottom end of the slotted optical head screw is inserted into the central hole of the fixed sleeve, the inner end part of the locking slide block is embedded into the corresponding groove under the action of the elastic force of the elastic ring, and the slotted optical head screw is locked in the fixed sleeve.
Further, the cross-sectional shape of the locking slider is rectangular, and a second chamfer is provided at one vertical side toward the inner end of the groove;
when the locking slide block locks the slotted optical head screw rod on the fixed sleeve, the second chamfer angle enables the slotted optical head screw rod to rotate towards one side along the circumferential direction, and the locking slide block can slide out of the groove through rotation to realize unlocking of the slotted optical head screw rod and the fixed sleeve.
Furthermore, the fixed sleeve is of a cylindrical structure, and an annular groove along the circumferential direction is formed in the outer circumferential surface of the fixed sleeve;
the concave station hole is positioned in the annular groove;
the elastic ring is sleeved in the annular groove.
Further, a tapered guide block is provided at the top end of the nut.
Further, the elastic ring is an annular spring;
and a plurality of positioning pins distributed along the circumferential direction are arranged on the end surface of the nut.
Has the advantages that:
1. the self-locking bolt structure is used for connecting adjacent standard sections in a tower crane and comprises a slotted optical head screw, a nut in threaded connection with the top end of the slotted optical head screw, a fixing sleeve in insertion fit with the bottom end of the slotted optical head screw, a locking slide block for clamping the slotted optical head screw in the fixing sleeve, an elastic ring for limiting the locking slide block in the fixing sleeve and a positioning pin for relatively fixing the fixing sleeve and a bolt sleeve of the standard section; the self-locking bolt structure is adopted to connect adjacent standard sections, the slotted optical head screw penetrates through bolt sleeves of the adjacent two standard sections, one end of the slotted optical head screw is in threaded connection with a nut, and the other end of the slotted optical head screw is fixedly clamped with the fixed sleeve through a locking slide block, so that the two standard sections are fixedly connected; the concrete process of connecting the adjacent standard sections by adopting the self-locking bolt structure comprises the following steps: in the jacking and section adding process of the tower crane, when the standard sections are on the ground, the locking slide block is firstly installed in a concave hole of the fixing sleeve through the elastic ring, then the fixing sleeve is fixedly installed at the bottoms of top bolt sleeves of the lower side standard sections in the two adjacent standard sections, then the nut is in threaded connection with the slotted optical head screw rod, the slotted optical head screw rod with the nut is placed in a bottom bolt sleeve of the upper side standard section in the two adjacent standard sections, the standard sections are hoisted, introduced and in place, finally the bottom end of the slotted optical head screw rod is inserted into a central hole of the fixing sleeve and locked in the groove through the locking slide block, the fixed connection between the bottom end of the slotted optical head screw rod and the fixing sleeve is realized, and then the nut is fastened to realize the quick connection between the standard sections. The self-locking bolt structure adopts the slotted optical head screw, the nut, the fixed sleeve, the locking slide block, the elastic ring and the positioning pin to realize the quick connection of the standard knot, and the connecting parts are preassembled on the standard knot, so the self-locking bolt structure has the characteristics of simple structure, convenience in installation and high reliability, and meanwhile, the self-locking bolt structure can reduce the number of construction people, improve the installation efficiency, and avoid the problems of neglected installation and the like in the construction process of workers.
2. The cross section of the locking sliding block of the self-locking bolt structure is rectangular, and a second chamfer is arranged on one vertical edge facing to the inner end part of the groove; when the locking slide block locks the slotted optical head screw to the fixed sleeve, the second chamfer enables the slotted optical head screw to only rotate towards one side along the circumferential direction, and the locking slide block can slide out of the groove through rotation to realize unlocking of the slotted optical head screw and the fixed sleeve; because the second chamfer is arranged at one end part of the locking sliding block inserted into the groove of the slotted optical head screw, the slotted optical head screw can be limited to rotate only along a single direction through the second chamfer, the angle adjustment of the slotted optical head screw in the connection process is facilitated, and the locking sliding block can slide out of the groove of the slotted optical head screw through the single-direction rotation to realize the assembly and disassembly of the slotted optical head screw and the fixed sleeve; therefore, the self-locking bolt structure is convenient to mount and can improve the dismounting efficiency.
3. The fixing sleeve of the self-locking bolt structure is cylindrical, the circumferential surface of the fixing sleeve is provided with the circumferential annular groove, the concave station hole is positioned in the annular groove, and the elastic ring is sleeved in the annular groove, so that the position of the elastic ring can be limited by the annular groove on the circumferential surface of the fixing sleeve, the elastic ring is always kept in the annular groove, the locking slide block can be firmly clamped in the groove of the slotted optical head screw rod, the connection reliability and stability between standard joints are ensured, and safety accidents caused by the separation of the elastic ring are prevented.
Drawings
FIG. 1 is a schematic view of a connection structure of the self-locking bolt structure of the present invention when connecting a standard knot;
FIG. 2 is a schematic view of a portion A of FIG. 1;
FIG. 3 is a schematic structural view of the self-locking bolt structure of the present invention;
fig. 4 is an exploded view of the bottom of the slotted optical head screw and the fixture sleeve.
Wherein, 1-upper standard section, 2-lower standard section, 3-bolt sleeve, 4-slotted optical head screw, 5-first chamfer, 6-groove, 7-nut, 8-fixing sleeve, 9-center hole, 10-concave table hole, 11-locking slide block, 12-arc groove, 13-elastic ring, 14-positioning pin, 15-second chamfer, 16-annular groove, 17-conical guide block
Detailed Description
The invention is described in detail below by way of example with reference to the accompanying drawings.
The embodiment of the invention provides a self-locking bolt structure convenient for connecting standard sections of a tower crane, which is used for connecting two adjacent standard sections in the vertical direction in the tower crane, wherein the standard section positioned at the upper side in the two adjacent standard sections is defined as an upper standard section 1, the standard section positioned at the lower side is defined as a lower standard section 2, four corners of the upper and lower ends of the upper standard section 1 and the lower standard section 2 are fixedly provided with two bolt sleeves 3, and the fixed connection between the upper standard section 1 and the lower standard section 2 is realized through a slotted optical head screw rod 4 penetrating through the bolt sleeves 3;
as shown in the structures of fig. 3 and 4, the self-locking bolt structure comprises a slotted optical head screw rod 4, a nut 7, a fixing sleeve 8, a locking slide block 11, an elastic ring 13 and a positioning pin 14; wherein:
the top end of the slotted optical head screw rod 4 is provided with an external thread, the bottom end is provided with a first chamfer 5, and the peripheral surface is uniformly distributed with at least two grooves 6;
the nut 7 is provided with an internal thread matched with the external thread in a threaded manner, and the nut 7 is fixedly connected with the slotted optical head screw 4 through the threaded connection of the internal thread and the external thread; the top end of the nut 7 is provided with a conical guide block 17, and a tool for screwing the nut 7 can be guided through the conical guide block 17, so that the screwing tool can be conveniently and quickly sleeved on the outer peripheral side of the nut 7;
the fixed sleeve 8 is provided with a central hole 9 which is in inserting fit with the bottom end of the slotted optical head screw rod 4 and concave station holes 10 which are in one-to-one correspondence with the grooves 6; the concave platform hole 10 is communicated with the central hole 9 and the outer side of the fixed sleeve 8;
the locking sliding block 11 is in inserted fit with the concave station hole 10; the length of the locking slide block 11 is equal to the sum of the depths of the concave platform hole 10 and the concave groove 6; an arc-shaped groove 12 is formed in the outer end face, away from the nut 7, of the locking sliding block 11;
the elastic ring 13 is sleeved on the outer peripheral side of the fixed sleeve 8, and the elastic ring 13 is elastically pressed in the arc-shaped groove 12;
the positioning pin 14 is fixedly connected to the end face of one side of the fixing sleeve 8 facing the nut 7 and is used for being in inserted fit with the bolt sleeve 3 of the standard section;
the first chamfer 5 enables the slotted optical head screw rod 4 to enter the bottom end of a central hole 9 of the fixed sleeve 8 through self weight; when the bottom end of the slotted optical head screw rod 4 is inserted into the central hole 9 of the fixed sleeve 8, the inner end part of the locking slide block 11 is embedded into the corresponding groove 6 under the elastic force of the elastic ring 13, and the slotted optical head screw rod 4 is locked in the fixed sleeve 8.
The self-locking bolt structure is used for connecting adjacent standard sections in a tower crane and comprises a slotted optical head screw 4, a nut 7 in threaded connection with the top end of the slotted optical head screw 4, a fixing sleeve 8 in plug-in fit with the bottom end of the slotted optical head screw 4, a locking slide block 11 for clamping the slotted optical head screw 4 to the fixing sleeve 8, an elastic ring 13 for limiting the locking slide block 11 to the fixing sleeve 8 and a positioning pin 14 for relatively fixing the fixing sleeve 8 and a bolt sleeve 3 of the standard section. The self-locking bolt structure is adopted to connect adjacent standard sections, the slotted optical head screw rod 4 penetrates through the bolt sleeves 3 of the adjacent two standard sections, one end of the slotted optical head screw rod 4 is in threaded connection with the nut 7, and the other end of the slotted optical head screw rod is fixedly connected with the fixed sleeve 8 in a clamping mode through the locking slide block 11, so that the two standard sections are fixedly connected.
The concrete process of connecting the adjacent standard sections by adopting the self-locking bolt structure comprises the following steps: in the jacking and section adding process of the tower crane, when the standard sections are on the ground, a locking slide block 11 is firstly installed in a concave table hole 10 of a fixed sleeve 8 through an elastic ring 13, then the fixed sleeve 8 is fixedly installed at the bottoms of top bolt sleeves 3 of lower side standard sections in two adjacent standard sections, nuts 7 are then in threaded connection with slotted optical head screws 4, the slotted optical head screws 4 provided with the nuts 7 are placed in bottom bolt sleeves 3 of upper side standard sections in two adjacent standard sections, the standard sections are hoisted, introduced and put in place, finally the bottom ends of the slotted optical head screws 4 are inserted into a central hole 9 of the fixed sleeve 8, the locking slide block 11 is clamped into a groove 6 to be locked, the fixed connection between the bottom ends of the slotted optical head screws 4 and the fixed sleeve 8 is realized, and the nuts 7 are fastened to realize the quick connection between the standard sections.
The self-locking bolt structure adopts the slotted optical head screw rod 4, the nut 7, the fixed sleeve 8, the locking slide block 11, the elastic ring 13 and the positioning pin 14 to realize the quick connection of the standard joint, and each connecting part is preassembled on the standard joint, and only one worker needs to pre-tighten the nut 7 by adopting a torque wrench, so that the self-locking bolt structure has the characteristics of simple structure, convenience in installation and high reliability, and meanwhile, the self-locking bolt structure can reduce the number of construction people, improve the installation efficiency, and avoid the problems of neglected installation and the like in the construction process of the worker.
In a particular embodiment, the locking slider 11 has a rectangular cross-sectional shape and is provided with a second chamfer 15 on one vertical side towards the inner end of the groove 6; when the locking slide block 11 locks the slotted optical head screw rod 4 to the fixed sleeve 8, the second chamfer 15 enables the slotted optical head screw rod 4 to rotate towards one side along the circumferential direction only, and the locking slide block 11 can slide out of the groove 6 through rotation to realize unlocking of the slotted optical head screw rod 4 and the fixed sleeve 8. As shown in fig. 4, the recessed table hole 10 is a stepped hole with a small inner part and a large outer part; the locking slide block 11 is a stepped structure matched with the shape of the concave station hole 10, the cross section is rectangular, a second chamfer 15 is arranged at the inner end part of the insertion groove 6 of the locking slide block 11, the second chamfer 15 is only arranged on one vertical edge of the locking slide block 11 and can also be arranged on the transverse edges of the top part and the bottom part, but the other vertical edge is not provided with a chamfer and is used for limiting the rotation direction of the slotted optical head screw rod 4 through the limit formed by the other vertical edge and the groove 6, so that the slotted optical head screw rod 4 can only rotate along the direction from the second chamfer 15 to the other vertical edge and can not rotate along the direction from the vertical edge to the second chamfer 15, and as shown in the structure of fig. 4, the slotted optical head screw rod 4 can only rotate along the anticlockwise direction and can not rotate along the clockwise direction; and when rotating along the anticlockwise direction, the locking slide block 11 can be withdrawn from the groove 6, so that the slotted optical head screw 4 can be pulled out from the central hole 9 of the fixed sleeve 8 for unlocking.
In the self-locking bolt structure, the cross section of the locking slide block 11 is rectangular, and a second chamfer 15 is arranged on one vertical side facing the inner end part of the groove 6; when the locking slide block 11 locks the slotted optical head screw rod 4 to the fixed sleeve 8, the second chamfer 15 enables the slotted optical head screw rod 4 to only rotate towards one side along the circumferential direction, and enables the locking slide block 11 to slide out of the groove 6 through rotation to realize unlocking of the slotted optical head screw rod 4 and the fixed sleeve 8; because the second chamfer 15 is arranged at one end part of the locking slide block 11 inserted into the groove 6 of the slotted optical head screw rod 4, the slotted optical head screw rod 4 can be limited to rotate only along one direction through the second chamfer 15, the angle adjustment of the slotted optical head screw rod 4 in the connection process is facilitated, and the locking slide block 11 can slide out of the groove 6 of the slotted optical head screw rod 4 through the one-way rotation to realize the dismounting of the slotted optical head screw rod 4 and the fixed sleeve 8; therefore, the self-locking bolt structure is convenient to install and can improve the assembly and disassembly efficiency.
Further, as shown in fig. 4, the fixing sleeve 8 is of a cylindrical structure, and the outer peripheral surface is provided with an annular groove 16 along the circumferential direction; the concave platform hole 10 is positioned in the annular groove 16; the elastic ring 13 is sleeved in the annular groove 16. The number and the position of the concave platform holes 10 correspond to those of the concave grooves 6 one by one, and 2, 3 or more concave platform holes 10 can be provided, and the concave platform holes 10 are uniformly distributed along the circumferential direction of the fixing sleeve 8, and the embodiment is described by taking five concave platform holes 10 as an example.
The fixing sleeve 8 of the self-locking bolt structure is of a cylindrical structure, the circumferential surface of the fixing sleeve 8 is provided with the circumferential annular groove 16, the groove hole 10 is located in the annular groove 16, and the elastic ring 13 is sleeved in the annular groove 16, so that the position of the elastic ring 13 can be limited through the annular groove 16 on the circumferential surface of the fixing sleeve 8, the elastic ring 13 is always kept in the annular groove 16, the locking slide block 11 can be firmly clamped in the groove 6 of the slotted optical head screw rod 4, the reliability and the stability of connection between standard joints are ensured, and safety accidents caused by the separation of the elastic ring 13 are prevented.
On the basis of the various embodiments described above, the elastic ring 13 may be an annular spring; a plurality of positioning pins 14 distributed along the circumferential direction are arranged on the end surface of the nut 7, as shown in the structure of fig. 4, 4 positioning pins 14 are arranged on the top surface of the fixing sleeve 8, and the top surface is the end surface of the fixing sleeve 8 facing to the nut 7; in the using process, positioning holes which correspond to the positioning pins 14 one by one are formed in the bottom end face of the bolt sleeve 3 at the top of the standard section, and the fixing sleeve 8 is prevented from rotating relative to the bolt sleeve 3 of the standard section through the insertion fit of the positioning pins 14 and the positioning holes, so that the nut 7 and the slotted optical head screw rod 4 can be conveniently fastened. In this embodiment, the fixing sleeve 8 provided with 4 positioning pins 14 is taken as an example for description, during actual use, the number of the positioning pins 14 may be 2, 3 or more, and the positioning pins 14 may be uniformly distributed along the circumferential direction of the fixing sleeve 8 or randomly distributed.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention. 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 (5)
1. The utility model provides a self-locking bolt structure convenient to connect tower crane standard festival which characterized in that includes:
the top end of the slotted optical head screw is provided with an external thread, the bottom end of the slotted optical head screw is provided with a first chamfer, and at least two grooves are uniformly distributed on the peripheral surface of the slotted optical head screw;
the nut is provided with an internal thread which is in threaded fit with the external thread;
the fixed sleeve is provided with a central hole which is in plug fit with the bottom end of the slotted optical head screw rod and concave platform holes which are in one-to-one correspondence with the grooves; the concave station hole is communicated with the central hole and the outer side of the fixed sleeve;
the locking sliding block is in inserted fit with the concave platform hole; the length of the locking slide block is equal to the sum of the depths of the concave platform hole and the concave groove; an arc-shaped groove is formed in the outer end face, away from the nut, of the locking sliding block;
the elastic ring is sleeved on the outer peripheral side of the fixed sleeve and elastically pressed in the arc-shaped groove;
the positioning pin is fixedly connected to the end face of one side, facing the nut, of the fixing sleeve and is used for being in inserting fit with the bolt sleeve of the standard section;
the first chamfer enables the slotted optical head screw to enter the bottom end of the central hole of the fixed sleeve through self weight; when the bottom end of the slotted optical head screw rod is inserted into the central hole of the fixed sleeve, the inner end part of the locking slide block is embedded into the corresponding groove under the elastic action of the elastic ring, and the slotted optical head screw rod is locked in the fixed sleeve.
2. The self-locking bolt structure according to claim 1, wherein the cross-sectional shape of the locking slider is rectangular and a second chamfer is provided at a vertical side toward an inner end portion of the groove;
when the locking slide block locks the slotted optical head screw rod on the fixed sleeve, the second chamfer angle enables the slotted optical head screw rod to rotate towards one side along the circumferential direction, and the locking slide block can slide out of the groove through rotation to realize unlocking of the slotted optical head screw rod and the fixed sleeve.
3. A self-locking bolt structure as defined in claim 1 wherein said retaining sleeve is cylindrical in configuration with a circumferential annular groove in its outer peripheral surface;
the concave station hole is positioned in the annular groove;
the elastic ring is sleeved in the annular groove.
4. The self-locking bolt structure of claim 1, wherein a tapered guide block is provided at the top end of the nut.
5. The self-locking bolt structure according to any one of claims 1 to 4, characterized in that the elastic ring is an annular spring;
and a plurality of positioning pins distributed along the circumferential direction are arranged on the end surface of the nut.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211307115.6A CN115899053A (en) | 2022-10-25 | 2022-10-25 | Self-locking bolt structure convenient for connecting standard knot of tower crane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211307115.6A CN115899053A (en) | 2022-10-25 | 2022-10-25 | Self-locking bolt structure convenient for connecting standard knot of tower crane |
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| Publication Number | Publication Date |
|---|---|
| CN115899053A true CN115899053A (en) | 2023-04-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211307115.6A Pending CN115899053A (en) | 2022-10-25 | 2022-10-25 | Self-locking bolt structure convenient for connecting standard knot of tower crane |
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| CN (1) | CN115899053A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116146580A (en) * | 2023-04-11 | 2023-05-23 | 山东海天智能工程有限公司 | Pressure control quick-plugging-unplugging device based on brain-computer interface |
-
2022
- 2022-10-25 CN CN202211307115.6A patent/CN115899053A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116146580A (en) * | 2023-04-11 | 2023-05-23 | 山东海天智能工程有限公司 | Pressure control quick-plugging-unplugging device based on brain-computer interface |
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