CN220791731U - Compact anti-drop bolt for large mechanical equipment - Google Patents
Compact anti-drop bolt for large mechanical equipment Download PDFInfo
- Publication number
- CN220791731U CN220791731U CN202322387759.7U CN202322387759U CN220791731U CN 220791731 U CN220791731 U CN 220791731U CN 202322387759 U CN202322387759 U CN 202322387759U CN 220791731 U CN220791731 U CN 220791731U
- Authority
- CN
- China
- Prior art keywords
- nut
- screw
- hollow cavity
- mechanical equipment
- screw rod
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000002347 injection Methods 0.000 claims abstract description 11
- 239000007924 injection Substances 0.000 claims abstract description 11
- 238000007789 sealing Methods 0.000 abstract description 5
- 238000009434 installation Methods 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
Landscapes
- Fluid-Damping Devices (AREA)
Abstract
The utility model relates to the technical field of bolts, in particular to a compact anti-falling bolt for large-scale mechanical equipment. The compact anti-drop bolt for the large mechanical equipment comprises a screw cap and a screw rod, wherein a hollow cavity is formed in the screw rod, a threaded rod-free section is arranged at the root of the screw rod, and an annular elastic telescopic air bag piece communicated with the hollow cavity is embedded in the threaded rod-free section; the hollow cavity formed by the screw is internally provided with an air injection connecting piece, the screw is also provided with a nut in threaded connection, and the nut is provided with an abutting component. The compact anti-drop bolt for the large-scale mechanical equipment provided by the utility model improves the connection tightness of the screw and the mounting hole of the shell, and effectively relieves hidden troubles of screw connection failure and sealing failure caused by vibration when the large-scale mechanical equipment works, and when the nut is reversely rotated due to large vibration, the nut cannot drop off from the screw, so that the effective connection of the large-scale mechanical shell can be maintained all the time.
Description
Technical Field
The utility model relates to the technical field of bolts, in particular to a compact anti-falling bolt for large-scale mechanical equipment.
Background
The mechanical devices are of a great variety, and some parts of the mechanical devices can even perform different forms of mechanical movements themselves when the mechanical devices are in operation. The mechanical equipment consists of a driving device, a speed changing device, a transmission device, a working device, a braking device, a protecting device, a lubricating system, a cooling system and the like.
At present, a plurality of shells of large mechanical equipment in factories are connected and fastened by bolts for easy maintenance, and as the large mechanical equipment vibrates during working, when the equipment shakes severely, the bolts are easy to loosen due to accumulation during working time, so that the local shells are easy to have hidden trouble of connection failure.
Therefore, it is necessary to provide a new compact anti-drop bolt for large-scale mechanical equipment to solve the above-mentioned technical problems.
Disclosure of Invention
In order to solve the technical problems, the utility model provides a compact anti-drop bolt for large-scale mechanical equipment.
The utility model provides a compact anti-drop bolt for large-scale mechanical equipment, comprising:
screw cap
The screw rod is fixedly embedded on the screw cap, a hollow cavity is formed in the screw rod, a non-threaded rod section is arranged at the root of the screw rod, and an annular elastic telescopic air bag sheet communicated with the hollow cavity is embedded on the non-threaded rod section;
an air injection connecting piece is arranged in a hollow cavity formed by the screw rod, the air injection connecting piece comprises a fixed disc, and a piston column for pushing air in the hollow cavity to flow is arranged on the fixed disc;
the screw rod is further provided with a nut in threaded connection, the nut is provided with an abutting assembly, the abutting assembly comprises a mounting plate, and the bottom of the mounting plate is fixedly provided with a pushing column which is coaxially arranged.
Preferably, the thread-free rod section is provided with an annular groove, a plurality of through holes which are distributed annularly and communicated with the hollow cavity are formed in the annular groove, and the inner walls of the two sides of the annular elastic telescopic air bag sheet are respectively fixedly embedded on the inner walls of the two sides of the annular groove.
Preferably, the fixed disk is fixedly arranged on the inner bottom wall of the hollow cavity, the spring is fixedly arranged on the fixed disk, the rotating seat is fixedly arranged at the top of the spring, and the piston column is rotatably arranged on the rotating seat.
Preferably, the mounting plate is fixedly connected with the nut through a plurality of middle connecting rods distributed in a ring shape, the mounting plate and the nut are coaxially arranged, and the nut is positioned at the end head of the pushing column.
Preferably, a cross groove is formed in the top of the piston column, and limit grooves are formed in groove walls on two sides, close to the groove bottom, of the cross groove.
Preferably, the bottom of the pushing column is fixedly provided with a coaxially arranged connecting rod, and the bottom of the connecting rod is fixedly provided with a cross.
Compared with the related art, the compact anti-drop bolt for the large mechanical equipment has the following beneficial effects:
the utility model improves the connection tightness of the screw rod and the mounting hole of the shell and performs connection sealing on the mounting hole, and on the other hand, the hidden danger of screw rod connection failure and sealing failure caused by vibration when large-scale mechanical equipment works is effectively relieved because the expanded annular elastic telescopic air bag sheet is of an elastic structure, when the nut is subjected to large-scale vibration to reverse rotation, the nut drives the cross to reversely rotate into the limit groove in the other direction, and the piston column is limited by the limit ring and cannot slip off the screw rod, so that the nut cannot fall off from the screw rod, and the effective connection of the large-scale mechanical shell can be always maintained.
Drawings
FIG. 1 is a schematic view of a compact anti-drop bolt for large machinery according to a preferred embodiment of the present utility model;
FIG. 2 is a schematic view of the explosive structure shown in FIG. 1;
FIG. 3 is a schematic cross-sectional view of the screw of FIG. 1;
fig. 4 is a schematic structural view of the abutting component shown in fig. 2.
Reference numerals in the drawings: 1. a screw cap; 2. a screw; 2a, a hollow cavity; 21. a thread-free rod section; 21a, an annular groove; 21b, through holes; 3. annular elastic telescopic air bag sheet; 4. a gas injection connection; 41. a fixed plate; 42. a spring; 43. a rotating seat; 44. a piston column; 44a, cross grooves; 44b, a limit groove; 5. a nut; 6. an abutting assembly; 61. a mounting plate; 62. a middle link; 63. pushing the column; 64. a connecting rod; 65. cross frame.
Detailed Description
The present utility model will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present utility model more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model.
Specific implementations of the utility model are described in detail below in connection with specific embodiments.
Referring to fig. 1 to 4, a compact anti-drop bolt for a large-scale mechanical device according to an embodiment of the present utility model includes: the device comprises a nut 1, a screw 2, an annular elastic telescopic airbag piece 3, an air injection connecting piece 4, a nut 5 and an abutting component 6.
In the embodiment of the present utility model, referring to fig. 1 and 2, a screw rod 2 is fixedly embedded in the nut 1, a hollow cavity 2a is formed in the screw rod 2, a non-threaded rod section 21 is disposed at the root of the screw rod 2, and an annular elastic telescopic airbag piece 3 communicated with the hollow cavity 2a is embedded in the non-threaded rod section 21,
the non-threaded rod section 21 is provided with an annular groove 21a, a plurality of through holes 21b which are distributed annularly and communicated with the hollow cavity 2a are formed in the annular groove 21a, and the inner walls of the two sides of the annular elastic telescopic air bag sheet 3 are respectively fixedly embedded on the inner walls of the two sides of the annular groove 21 a;
and the hollow cavity 2a formed by the screw rod 2 is internally provided with an air injection connecting piece 4, the screw rod 2 is also provided with a nut 5 in threaded connection, and the nut 5 is provided with an abutting component 6.
It should be noted that: the screw rod 2 passes through the mounting hole of the large mechanical equipment shell and enables the screw cap 1 to be abutted against one side of the shell, the screw nut 5 is subsequently sleeved on the screw rod 2 for screwing, the screw nut 5 utilizes the pushing column 63 in the abutting component 6 to push the piston column 44 in the gas injection connecting piece 4 to slide along the hollow cavity 2a, so that gas in the hollow cavity 2a is compressed and flows into the annular groove 21a from the through hole 21b, the annular elastic expansion airbag piece 3 can be expanded along with the increase of the gas in the annular groove 21a, the expanded annular elastic expansion airbag piece 3 can be abutted against the mounting hole passing through the large mechanical equipment shell, on one hand, the connection tightness of the screw rod 2 and the mounting hole of the shell is improved, and on the other hand, as the expanded annular elastic expansion airbag piece 3 is of an elastic structure, the hidden danger of connection failure and sealing failure of the screw rod 2 caused by vibration during the operation of the large mechanical equipment is effectively relieved.
In the embodiment of the present utility model, referring to fig. 2, 3 and 4, the gas injection connector 4 includes a fixed plate 41, a piston post 44 for pushing the gas in the hollow cavity 2a to flow is mounted on the fixed plate 41, specifically, the fixed plate 41 is fixedly mounted on the inner bottom wall of the hollow cavity 2a, a spring 42 is fixedly mounted on the fixed plate 41, a rotating seat 43 is fixedly mounted on the top of the spring 42, and the piston post 44 is rotatably mounted on the rotating seat 43;
the abutting component 6 comprises a mounting plate 61, a pushing column 63 which is coaxially arranged is fixedly arranged at the bottom of the mounting plate 61, the mounting plate 61 is fixedly connected with the nut 5 through a plurality of annular middle connecting rods 62, the mounting plate 61 and the nut 5 are coaxially arranged, and the nut 5 is positioned at the end head of the pushing column 63.
It should be noted that: when the nut 5 is sleeved on the screw rod 2 for screwing, the pushing post 63 is inserted into the mounting cavity 2a and is abutted against the piston post 44, and as the nut 5 is continuously screwed along the screw rod 2, the pushing post 63 is abutted against the piston post 44 and the piston post 44 compresses the spring 42 to slide towards the nut 1, so that gas below the piston post 44 is pushed into the annular groove 21a and the annular elastic telescopic airbag piece 3 is expanded, and the nut 5 can be abutted against the other side shell of the mounting hole of the large-sized mechanical equipment, so that the connection of the large-sized mechanical shell is realized;
a limiting ring is embedded at the cavity opening of the installation cavity 2a at the top of the screw rod 2, so that the extension spring 42 of the piston column 44 can be prevented from slipping out of the installation cavity 2 a;
whereas in the present utility model: the mounting plate 61 and the middle link rod 62 can cover the rod heads of the screw 2, so that the screw threads of the rod heads can be effectively prevented from being damaged, and the service life of the screw is prolonged.
In the embodiment of the present utility model, referring to fig. 2 and 4, a cross groove 44a is formed at the top of the piston column 44, limiting grooves 44b are formed on groove walls of both sides of the cross groove 44a, which are close to the groove bottom, a coaxially arranged connecting rod 64 is fixedly mounted at the bottom of the pushing column 63, and a cross 65 is fixedly mounted at the bottom of the connecting rod 64.
It should be noted that: after the pushing post 63 is inserted into the mounting cavity 2a and abuts against the piston post 44, at this time, the cross 65 on the pushing post 63 is inserted into the cross groove 44a formed in the piston post 44, when the nut 5 is subsequently rotated, the cross 65 is screwed into the limit groove 44b in the corresponding direction so as to be engaged with the piston post 44, and when the nut 5 is further rotated to be screwed along the screw rod 2, the piston post 44 is rotatably mounted on the rotating seat 43, so that the piston post 44 rotates while sliding along the mounting cavity 2a, and the spring 42 is not damaged;
the clamping of the pushing post 63 and the piston post 44 can reduce the problem that the nut 5 is loosened from the screw rod 2 due to the reverse rotation caused by the vibration of the equipment, when the nut 5 is reversely rotated due to the large vibration, the nut 5 drives the cross 65 to reversely rotate into the limit groove 44b in the other direction, and the piston post 44 is limited by the limit ring and cannot slip off the screw rod 2, so that the nut 5 cannot fall off from the screw rod 2, and the effective connection of the large-sized mechanical shell can be maintained all the time.
The working principle of the compact anti-drop bolt for the large-scale mechanical equipment provided by the utility model is as follows:
the screw rod 2 is inserted through the mounting hole of the large-scale mechanical equipment shell and the nut 1 is abutted against one side of the shell, the nut 5 is sleeved on the screw rod 2 for screwing, and the nut 5 pushes the piston column 44 in the gas injection connecting piece 4 to slide along the hollow cavity 2a by utilizing the pushing column 63 in the abutting component 6, in particular,
when the nut 5 is sleeved on the screw rod 2 to be screwed in, the pushing post 63 is inserted into the mounting cavity 2a and is abutted against the piston post 44, at the moment, the cross 65 on the pushing post 63 is inserted into the cross groove 44a formed in the piston post 44, and when the nut 5 is subsequently rotated, the cross 65 is screwed into the limit groove 44b in the corresponding direction so as to be clamped with the piston post 44, and the clamping of the pushing post 63 and the piston post 44 can reduce the problem that the nut 5 is loosened from the screw rod 2 due to the reverse rotation caused by equipment vibration, when the nut 5 is subjected to the reverse rotation caused by the large vibration, the nut 5 drives the cross 65 to be reversely screwed into the limit groove 44b in the other direction, and the piston post 44 is limited by the limit ring so that the nut 5 cannot slip off the screw rod 2, and therefore the effective connection of a large-sized mechanical shell can be maintained all the time;
when the nut 5 is continuously rotated and screwed in along the screw rod 2, the piston column 44 is rotationally arranged on the rotating seat 43, so that the piston column 44 rotates while sliding along the mounting cavity 2a, the spring 42 is not damaged, the piston column 44 is pushed to push the piston column 63 to compress the spring 42 to slide towards the nut 1 along with the continuous screwing of the nut 5 along the screw rod 2, the gas in the hollow cavity 2a is compressed and flows into the annular groove 21a from the through hole 21b, the annular elastic telescopic airbag piece 3 can be expanded along with the increase of the gas in the annular groove 21a, the expanded annular elastic telescopic airbag piece 3 can be abutted into the mounting hole penetrating through the large mechanical equipment shell, on one hand, the connection tightness of the screw rod 2 and the mounting hole of the shell is improved, the mounting hole of the screw rod is sealed, and on the other hand, the hidden danger of connection failure and sealing failure of the screw rod 2 caused by vibration when the large mechanical equipment works is effectively relieved due to the fact that the expanded annular elastic telescopic airbag piece 3 is of an elastic structure.
The foregoing description is only illustrative of the present utility model and is not intended to limit the scope of the utility model, and all equivalent structures or equivalent processes or direct or indirect application in other related technical fields are included in the scope of the present utility model.
Claims (6)
1. The utility model provides a large-scale mechanical equipment is with inseparable anti-drop bolt which characterized in that includes:
screw cap (1)
The screw rod (2) is fixedly embedded on the screw cap (1), the hollow cavity (2 a) is formed in the screw rod (2), a non-threaded rod section (21) is arranged at the root of the screw rod (2), and an annular elastic telescopic air bag sheet (3) communicated with the hollow cavity (2 a) is embedded on the non-threaded rod section (21);
an air injection connecting piece (4) is arranged in a hollow cavity (2 a) formed in the screw (2), the air injection connecting piece (4) comprises a fixed disc (41), and a piston column (44) for pushing air in the hollow cavity (2 a) to flow is arranged on the fixed disc (41);
the screw rod (2) is further provided with a nut (5) in threaded connection, the nut (5) is provided with an abutting component (6), the abutting component (6) comprises a mounting disc (61), and the bottom of the mounting disc (61) is fixedly provided with a pushing column (63) which is coaxially arranged.
2. The compact anti-drop bolt for large-scale mechanical equipment according to claim 1, wherein the non-threaded rod section (21) is provided with an annular groove (21 a), a plurality of through holes (21 b) which are distributed annularly and communicated with the hollow cavity (2 a) are formed in the annular groove (21 a), and the inner walls of the two sides of the annular elastic telescopic airbag piece (3) are respectively fixedly embedded on the inner walls of the two sides of the annular groove (21 a).
3. The compact anti-drop bolt for large-scale mechanical equipment according to claim 1, wherein the fixed disk (41) is fixedly installed on the inner bottom wall of the hollow cavity (2 a), a spring (42) is fixedly installed on the fixed disk (41), a rotating seat (43) is fixedly installed on the top of the spring (42), and the piston column (44) is rotatably installed on the rotating seat (43).
4. A compact anti-drop bolt for large machinery according to claim 3, characterized in that the mounting plate (61) is fixedly connected with the nut (5) by a plurality of annularly distributed intermediate links (62), and the mounting plate (61) is coaxially arranged with the nut (5), and the nut (5) is positioned at the end of the pushing post (63).
5. A compact anti-drop bolt for large machinery according to claim 3, wherein the top of the piston column (44) is provided with a cross groove (44 a), and both side groove walls of the cross groove (44 a) close to the groove bottom are provided with limit grooves (44 b).
6. The compact anti-drop bolt for large machinery according to claim 4, wherein the bottom of the pushing post (63) is fixedly provided with a coaxially arranged connecting rod (64), and the bottom of the connecting rod (64) is fixedly provided with a cross (65).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322387759.7U CN220791731U (en) | 2023-09-04 | 2023-09-04 | Compact anti-drop bolt for large mechanical equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322387759.7U CN220791731U (en) | 2023-09-04 | 2023-09-04 | Compact anti-drop bolt for large mechanical equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220791731U true CN220791731U (en) | 2024-04-16 |
Family
ID=90656862
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322387759.7U Active CN220791731U (en) | 2023-09-04 | 2023-09-04 | Compact anti-drop bolt for large mechanical equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220791731U (en) |
-
2023
- 2023-09-04 CN CN202322387759.7U patent/CN220791731U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN220791731U (en) | Compact anti-drop bolt for large mechanical equipment | |
| CN219221015U (en) | Gasket for constantly fastening bolt and nut and bolt and nut assembly | |
| CN202395579U (en) | Sealing structure of end cover screw holes for micromotor | |
| CN212430106U (en) | Rubber elastic shock absorber | |
| CN110695921B (en) | Dismounting device and method for output flange shaft of speed reducer | |
| CN114857281A (en) | Bevel gear transmission light torque middle cavity non-pressure type adjusting type shaft flow valve | |
| CN212455171U (en) | Anti-loosening bolt and nut assembly | |
| CN219388482U (en) | Waterproof dustproof brake drum | |
| CN207756224U (en) | Rocker arrangement, which connect quickly to be risen with self-locking with Burnisher apparatus, pulls out expanding sleeve device | |
| CN219406680U (en) | Large-tonnage tensioning device assembly | |
| CN220523036U (en) | Fastener of anti-drop structure | |
| CN218030899U (en) | Magnetic sucker cylinder | |
| CN219152764U (en) | Special tool for disassembling and assembling air valve of compressor | |
| CN217976331U (en) | Steam seal structure convenient to dismouting is adjusted | |
| CN221221089U (en) | Looseness-preventing bolt for medium-sized mechanical equipment | |
| CN113847331B (en) | Hexagonal flange face extrusion sealing bolt | |
| CN212377225U (en) | Adjustable chain transmission automatic tensioning device | |
| CN211729031U (en) | Self-operated pressure reducing valve seat dismounting tool | |
| CN220378598U (en) | Cylinder convenient to overhaul | |
| CN216867227U (en) | High-strength anti-skid bolt | |
| CN219101838U (en) | Polygonal anti-theft nut | |
| CN219176451U (en) | Sealing flap device fixed by spring self-locking | |
| CN219543040U (en) | Special dismounting tool for cylinder sleeve of crawler-type equipment diesel engine | |
| CN217327995U (en) | Bolt fastening device | |
| CN216030534U (en) | Flexible disassembling device for electromagnetic valve |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |