CN210795591U - Novel combined sliding block - Google Patents
Novel combined sliding block Download PDFInfo
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- CN210795591U CN210795591U CN201921685899.XU CN201921685899U CN210795591U CN 210795591 U CN210795591 U CN 210795591U CN 201921685899 U CN201921685899 U CN 201921685899U CN 210795591 U CN210795591 U CN 210795591U
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- nut
- sliding block
- slider
- bolt
- locking nut
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Abstract
The utility model provides a novel combination formula slider, includes the slider, there is the iron baffle one end of slider through bolted connection, the bolt bottom is connected with locking nut, locking nut sets up the threaded hole on the slider, it has the nut mounting hole of installation locking nut to open on the slider. The utility model discloses a structural strength of combination formula slider depends on bolt and nut self intensity, and can constantly improve sliding block group antifriction ability through improving bolt and nut intensity level or increasing threaded engagement length between bolt and nut, and its structural strength, reliability improve greatly.
Description
Technical Field
The utility model relates to a flexible jib loading boom technical field of box of hoist specifically is a novel combination formula slider.
Background
The boom is the most important working part of a mobile crane, of which the box-type telescopic boom is the most common one. At present, a wheel crane is developed to kiloton grade, and in order to prevent the sidewise bending of an arm support when a main arm is in a long working condition and the weight is lifted, sliding blocks at the lateral straight edge positions among arm sections must be assembled tightly; the combined sliding block is fixed on the arm head of the main arm and plays a role in supporting the inner knuckle arm; the whole structure strength is ensured by bolt connection. In the process of stretching, the sliding block group and the inner knuckle arm generate sliding friction, namely the sliding block group bears the friction force generated when the inner knuckle arm stretches. But the self weight of the lifting arm of dozens of tons makes the friction force borne by the arm head sliding block group invisible, and even the problem that the sliding block group scatters in the telescopic process often occurs.
The sliding block in the existing combined sliding block is made of nylon materials and is fixed on the iron baffle plate through a bolt, and when the main arm retracts, the friction force of the inner-section cylinder body is completely born by a thread pair between the front baffle plate and the sliding block; and the thread pair consists of a metal external thread and a nylon internal thread. The nylon slider is restricted by self material strength, and its screw thread intensity is less than metal thread intensity on the bolt far away, easily produces smooth silk, causes the sliding block group to scatter.
Disclosure of Invention
The utility model aims to solve the technical problem that overcome above-mentioned prior art not enough, provide a box flexible arm crane modular slider for jib loading boom, be applicable to all arm sections of jib loading boom. The sliding block group is assembled on the arm head and used for supporting and lubricating the straight side of the side face of the cylinder body between the boom sections of the crane boom. Through increasing the metal thread pair, improve sliding block set overall structure intensity, solve the sliding block set problem that scatters that present super-tonnage hoist appears after long-time work.
The utility model discloses a realize with following technical scheme: the utility model provides a novel combination formula slider, includes the slider, there is the iron baffle one end of slider through bolted connection, the bolt bottom is connected with locking nut, locking nut sets up the threaded hole on the slider, it has the nut mounting hole of installation locking nut to open on the slider.
It further comprises the following steps: the slider is made of nylon.
And an elastic washer and a flat gasket are arranged between the bolt and the iron baffle.
The locking nut is a four-corner nut, and the nut mounting hole is a square open slot.
The length of the nut mounting hole is larger than that of the locking nut, and the thickness of the nut mounting hole is larger than that of the locking nut.
The length of the nut mounting hole is 2-3mm greater than that of the locking nut.
The utility model has the advantages of it is following: the utility model discloses a locking nut is arranged through the slider centre to combination formula slider, changes the main arm and contracts the stress state of the whole sliding block group of arm in-process. When the main arm retracts, the locking four-corner nuts positioned at the bottom of the threaded hole of the sliding block and the internal threads of the sliding block bear the friction force of the main inner-section cylinder body simultaneously; namely, the original stress of the metal-nylon thread pair is converted into the stress of the metal-nylon thread pair and the metal-metal thread pair simultaneously. The structural strength of the combined sliding block depends on the strength of the bolt and the nut, the anti-friction capacity of the sliding block set can be continuously improved by improving the strength grade of the bolt and the nut or increasing the length of thread engagement between the bolt and the nut, and the structural strength and the reliability of the combined sliding block are greatly improved.
Drawings
FIG. 1 is a schematic structural view of a prior art modular slider;
fig. 2 is a schematic view of the overall structure of the present invention;
FIG. 3 is an exploded view of the structure of the present invention;
fig. 4 is a schematic view of the installation structure of the present invention;
FIG. 5 is a cross-sectional view taken along line K-K of FIG. 4;
in the figure: 1. iron baffle, 2, slider, 3, bolt, 4, elastic washer, 5, flat gasket, 6, locking nut, 7, nut mounting hole.
Detailed Description
The novel combined type sliding block comprises a sliding block 2, one end of the sliding block 2 is connected with an iron baffle 1 through a bolt 3, the bottom of the bolt 3 is connected with a locking nut 6, the locking nut 6 is arranged in a threaded hole in the sliding block 2, and a nut mounting hole 7 for mounting the locking nut 6 is formed in the sliding block 2. The sliding block 2 is made of nylon. The utility model discloses a novel locking nut is add to combination formula slider in the bottom of bolt to set up the nut mounting hole bottom the screw hole of slider, be used for placing locking nut in the hole, the bolt is when linked baffle and slider, and its external screw thread screws with slider left end threaded hole internal thread earlier, and when the bolt head reachd the locking nut mounting hole, further screws with locking nut again. The whole fastening thread pair comprises two parts, namely a bolt and a sliding block which are in threaded connection, and a bolt and a locking nut which are in threaded connection, and when the main arm retracts, the locking nut positioned at the bottom of a threaded hole of the sliding block and the internal thread of the sliding block bear the main friction force of the inner-section cylinder body simultaneously; the original stress of the metal-nylon thread pair is converted into the stress of the metal-nylon thread pair and the stress of the metal-metal thread pair, so that the structural strength of the new combined sliding block depends on the strength of the bolt and the nut, the anti-friction capacity of the sliding block group can be continuously improved by improving the strength grade of the bolt and the nut or increasing the thread meshing length between the bolt and the nut, and the structural strength and the reliability of the combined sliding block are far higher than those of the existing combined sliding block.
As shown in fig. 1 to 5, an elastic washer 4 and a flat washer 5 are arranged between the bolt 3 and the iron baffle 1.
As shown in fig. 1 to 5, the locking nut 6 is a square nut, and the nut mounting hole 7 is a square open slot. The utility model discloses a lock nut adopts the four corners nut, and consequently the nut mounting hole is square open slot, prevents behind the nut mounting hole when lock nut, and lock nut axial motion is restricted, consequently makes things convenient for in bolt screw in lock nut's the screw thread, guarantees the reliability of assembly. Simultaneously, the trapezoidal iron plate of threaded hole also can be selected for use to the locking nut, and the nut mounting hole sets trapezoidal being used for cooperating the locking nut to use.
In the novel combined sliding block shown in fig. 1 to 5, the length of the nut mounting hole 7 is greater than that of the locking nut 6, and the thickness of the nut mounting hole 7 is greater than that of the locking nut 6. The length of the nut mounting hole 7 is 2-3mm greater than that of the locking nut 6. The utility model discloses a there is assembly tolerance between lock nut and the nut mounting hole, specifically is length L2 that length L1> four corners nut of nut mounting hole on the slider, and L1= L2+2 ~ 3mm sets up like this when bolt and nut are screwed up, and the automatic restraint of the rotatory degree of freedom of nut need not the instrument centre gripping. Meanwhile, the width dimension W1 of the nut mounting hole is larger than the thickness W2 of the four-corner nut, and the nut is convenient to place.
Claims (6)
1. A novel combined type sliding block is characterized in that: the iron baffle is characterized by comprising a sliding block (2), wherein one end of the sliding block (2) is connected with an iron baffle (1) through a bolt (3), the bottom of the bolt (3) is connected with a locking nut (6), the locking nut (6) is arranged in a threaded hole in the sliding block (2), and a nut mounting hole (7) for mounting the locking nut (6) is formed in the sliding block (2).
2. A novel modular slider as claimed in claim 1, wherein: the sliding block (2) is made of nylon.
3. A novel modular slider as claimed in claim 1, wherein: an elastic washer (4) and a flat gasket (5) are arranged between the bolt (3) and the iron baffle (1).
4. A novel modular slider as claimed in claim 1, wherein: the locking nut (6) is a four-corner nut, and the nut mounting hole (7) is a square open slot.
5. A novel modular slider as claimed in claim 1, wherein: the length of the nut mounting hole (7) is larger than that of the locking nut (6), and the thickness of the nut mounting hole (7) is larger than that of the locking nut (6).
6. The novel modular slider of claim 5 wherein: the length of the nut mounting hole (7) is 2-3mm greater than that of the locking nut (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921685899.XU CN210795591U (en) | 2019-10-10 | 2019-10-10 | Novel combined sliding block |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921685899.XU CN210795591U (en) | 2019-10-10 | 2019-10-10 | Novel combined sliding block |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210795591U true CN210795591U (en) | 2020-06-19 |
Family
ID=71244578
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921685899.XU Active CN210795591U (en) | 2019-10-10 | 2019-10-10 | Novel combined sliding block |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210795591U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024087625A1 (en) * | 2022-10-28 | 2024-05-02 | 湖南三一中型起重机械有限公司 | Boom slider assembly, boom assembly, and operation machine |
-
2019
- 2019-10-10 CN CN201921685899.XU patent/CN210795591U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024087625A1 (en) * | 2022-10-28 | 2024-05-02 | 湖南三一中型起重机械有限公司 | Boom slider assembly, boom assembly, and operation machine |
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