CN212564052U - Petal type hinge structure - Google Patents

Abstract

The utility model relates to a petal formula hinge structure, it is preceding, it is first in the articulated ear of back respectively, second petal cover, the wear-resisting cover of installation in the articulated ear of centre, the articulated shaft preceding, in, back three shaft section is installed respectively in first petal cover, wear-resisting cover and second petal cover, it is first, the hole of second petal cover all sets up the little interior taper thread in big back before the front, the specification is M1 and M2 respectively, the articulated shaft preceding, the back shaft section respectively with first, second petal cover screw thread closes soon, it is first, second petal cover is the three-petal formula constitutional assembly of circumference trisection, the tangential clearance is impartial between adjacent two petals when the three-petal is located same circumference, the aperture d3 of wear-resisting cover is greater than M2 and is less than M1, it is first under the installation state, second petal cover interference fit is in the front respectively, back articulated ear. The utility model discloses can thoroughly solve cover and earhole interlock adhesion, corrosion or earhole deformation etc. and lead to disassembling the problem that wastes time and energy or need the destructiveness to demolish, can make things convenient for hinge structure's maintenance.

Description

Petal type hinge structure

Technical Field

The utility model relates to an articulated structure especially relates to an articulated structure who connects reliably, easily dismantles.

Background

When the coal mining machine is used for mining coal on a fully mechanized mining face, the rocker arm of the lifting coal mining machine is adjusted through the telescopic oil cylinder continuously according to the thickness of the coal seam, and the rocker arm swings around the rotation center to meet different mining height requirements. Because the geological conditions of a coal mine are severe, the coal seam contains gangue, the rocker arm is seriously impacted when in work, and the impact load can be transmitted to the hinged structure of the rotation center.

After the existing hinge structure at the position where the rocker arm of the coal mining machine rotates around the lug hole of the traction part is used for a period of time, when parts need to be replaced or the whole machine is disassembled, the following problems are mainly likely to be encountered when the hinge structure is disassembled, firstly, the hinge lug hole and the hinge shaft have small deformation, so that the coaxiality is poor, and the hinge shaft or the sleeve is difficult to disassemble; and secondly, parts in the hinged structure contacted with the ear holes of the shell of the traction part are corroded, occluded and adhered, so that the parts are extremely difficult to disassemble.

The existing hinge structures are mainly three types, and cannot solve the problems. The first is a cylindrical through shaft with equal diameter, if the coaxiality of the ear holes is not good, the installation and the disassembly are very difficult, and after the through shaft is used for a period of time, the cylindricity of the ear holes of the traction part is deformed or the hinge shaft is worn to form steps, the hinge shaft is difficult to detach, so that the structure is basically not used.

The second kind is the hinge structure who adopts the step shaft, sets the articulated shaft to the step shaft of the different diameters of three-section, and it is relatively convenient than cylinder isodiametric through-axle, but still does not solve the difficult problem of tearing of ear hole cylindricity deformation or articulated shaft and traction portion ear hole interlock adhesion articulated shaft.

The third kind is the hinge joint structure who adopts the taper sleeve, can solve the difficult problem of tearing open of articulated shaft atress micro-deformation, but because taper sleeve and traction part earhole receive impact load, and traction part earhole warp, taper sleeve and traction part earhole interlock adhesion, the taper sleeve rigidity is poor, and is more difficult to tear open, and under the coal mine working face dust is many, the air humid environment, the dismantlement degree of difficulty further increases.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a petal formula hinge structure solves the difficult dismouting problem of hinge structure.

The utility model discloses a main technical scheme has:

a petal type hinge structure comprises a front hinge lug, a middle hinge lug, a rear hinge lug, a first petal sleeve, a second petal sleeve, a hinge shaft and a wear-resistant sleeve, wherein the front hinge lug, the middle hinge lug and the rear hinge lug are sequentially arranged according to the coaxial ear holes and are mutually provided with gaps, the first petal sleeve and the second petal sleeve are respectively arranged in the ear holes of the front hinge lug and the rear hinge lug, the wear-resistant sleeve is fixedly arranged in the ear hole of the middle hinge lug, the front, middle and rear three shaft sections of the hinge shaft are respectively arranged in the inner holes of the first petal sleeve, the wear-resistant sleeve and the second petal sleeve, the inner holes of the first petal sleeve and the second petal sleeve are respectively provided with large-front inner cone threads and small-rear inner cone threads, the thread specifications are respectively M1 and M2, the front and rear shaft sections of the hinge shaft are respectively provided with large-front outer cone threads and small-rear outer cone threads and are respectively screwed with the first petal sleeve and the second petal sleeve threads, the first petal sleeve and the second petal sleeve are circumferential trisection three-petal type structural components, under the design condition, the three-petal type structural components are located on the same circumference, tangential gaps between two adjacent petals are equal along the radial direction, the cylindrical aperture of the wear-resistant sleeve is d3, M1> d3> M2, and in the installation state, the first petal sleeve and the second petal sleeve are respectively expanded and in interference fit with ear holes of the front hinge lug and the rear hinge lug.

The front ends of the first petal sleeve and the second petal sleeve are provided with outward-turned flanges, the front ends of the ear holes of the front hinge ear and the rear hinge ear are correspondingly provided with sinking grooves, and the flanges are just embedded into the corresponding sinking grooves.

And both ends of the hinge shaft are preferably provided with axially extending square counter bores.

The bottom of the square counter bore can be provided with an axially extending threaded hole, and a plug screw is arranged in the threaded hole in the mounting state.

The front end of the front hinge lug is preferably fixedly provided with a first cover plate, the middle of the rear side of the first cover plate is provided with a protruding structure, and the first cover plate presses the front end face of the hinge shaft backwards by using the protruding structure.

The rear end of the rear hinge lug can be fixedly provided with a second cover plate, the second cover plate is not contacted with the hinge shaft, and the second cover plate covers the lug hole of the rear hinge lug seat forwards.

The first petal sleeve, the second petal sleeve and the wear-resistant sleeve are respectively installed in the ear holes of the front hinge ear, the rear hinge ear and the middle hinge ear, then the hinge shaft is installed from front to back, the hinge shaft sequentially penetrates through the first petal sleeve, the wear-resistant sleeve and the second petal sleeve, the hinge shaft is inserted and rotated in the process, finally the front shaft section and the rear shaft section of the hinge shaft are respectively screwed with the first petal sleeve and the second petal sleeve in a threaded mode to enable the first petal sleeve and the second petal sleeve to respectively expand tightly and be in interference fit in the ear holes of the front hinge ear and the rear hinge ear, and the middle shaft section of the hinge shaft is pivoted with the wear-resistant sleeve.

The utility model has the advantages that:

the utility model discloses an adopt three lamella formula integrated configuration's first petal cover and second petal cover and the earhole interference fit of hinge ear, the axial tension motion of dismantling hinge structure originally has become the vice rotary motion of spiral, can satisfy spare part articulated rotation and make things convenient for the hinge structure dismouting again, thoroughly solved traditional hinge structure because the rigidity of cover is not enough, the cover leads to disassembling the problem that wastes time and energy or need destructiveness to demolish with reasons such as earhole interlock adhesion, corrosion or earhole deformation, has made things convenient for hinge structure's maintenance, other spare parts are conveniently changed, have improved the maintenance convenience, save time and save effort.

The utility model discloses an adopt the vice auto-lock of spiral between petal cover and the articulated shaft and the dual locking measure that the axial of first apron compresses tightly, effectively prevent the articulated shaft because the articulated shaft that receives reasons such as impact load and cause is not hard up to withdraw from, improves hinge structure's reliability.

The utility model discloses an articulated structure is particularly useful for on coal-winning machine etc. often receive great impact load's equipment, and the effect is showing on this outstanding problem that takes trouble and labours when solving the workman and disassemble, maintain rocking arm articulated structure in the pit, can obviously improve maintenance convenience and maintainability.

Drawings

Fig. 1 is a schematic structural view of an embodiment of the hinge structure of the present invention;

fig. 2 is a schematic view of the state that the hinge shaft is screwed with the first and second petal sleeves;

FIG. 3 is a view taken along line A of FIG. 2;

fig. 4 is a schematic structural view of the first petal sleeve in fig. 1 and 2;

fig. 5 is a sectional view B-B of fig. 4.

Reference numerals:

1. the hinge comprises a front hinge lug, a middle hinge lug, a rear hinge lug, a first petal sleeve, a second petal sleeve, a hinge shaft, a square counter bore, a threaded hole, a wear-resistant sleeve, a first cover plate, a second cover plate, a third cover plate and a fourth cover plate, wherein the front hinge lug is 2, the middle hinge lug is 3, the rear hinge lug is 4, the second petal sleeve is 5, the hinge shaft is 6, the square counter bore is 6-1, the threaded hole is 6.

Detailed Description

The utility model discloses a petal formula hinge structure (can be referred to as hinge structure for short), as shown in fig. 1-5, including preceding hinge ear 1, middle hinge ear 2, back hinge ear 3, first petal cover 4, second petal cover 5, articulated shaft 6 and wear-resisting cover 7. The front hinge lug, the middle hinge lug and the rear hinge lug are coaxially and sequentially arranged according to the ear holes and are provided with gaps. The first petal sleeve and the second petal sleeve are respectively arranged in the ear holes of the front hinge ear and the rear hinge ear, and the wear-resistant sleeve is fixedly arranged (for example, in interference fit) in the ear hole of the middle hinge ear. The front shaft section, the middle shaft section and the rear shaft section of the articulated shaft are respectively installed in inner holes of the first petal sleeve, the wear-resistant sleeve and the second petal sleeve, wherein the inner holes of the first petal sleeve and the second petal sleeve are respectively provided with inner conical threads with big front and small back, the thread specifications are respectively M1 and M2, the front shaft section and the rear shaft section of the articulated shaft are respectively provided with outer conical threads with big front and small back and are respectively screwed with the first petal sleeve and the second petal sleeve. The first petal sleeve and the second petal sleeve are three petal type structural components which are circumferentially trisected, under the design condition, the three petal type structural components are positioned on the same circumference, tangential gaps between two adjacent petals are equal in all positions along the radial direction and are S1, and the three petals can automatically center. The cylindrical hole diameter of the wear-resistant sleeve is d3, M1> d3> M2. Under the installation state, first petal cover and second petal cover expand tightly respectively and interference fit in the earhole of preceding articulated ear and back articulated ear. There is not relative rotation between preceding articulated ear, back articulated ear, first petal cover, second petal cover and the articulated shaft, and middle articulated ear can rotate relative articulated shaft together with wear-resisting cover.

The processing method of the first petal sleeve and the second petal sleeve comprises the steps that the whole ring is processed to the required size, the inner conical thread is processed, the outer diameters are respectively equal to d1 and d2, and according to the outer diameter size, the first petal sleeve and the second petal sleeve are in interference fit with the ear hole of the front hinge ear and the ear hole of the rear hinge ear respectively. The entire annular part can then be divided circumferentially equally into three halves by cutting, with the tangential gaps of two adjacent halves being equal in each radial direction and the tangential gaps being S1, or the tangential thickness of the material being cut off being S1. When the front shaft section and the rear shaft section of the hinged shaft are screwed with the first petal sleeve and the second petal sleeve respectively, the first petal sleeve and the second petal sleeve are in interference fit with the corresponding ear holes naturally, the first petal sleeve and the second petal sleeve are fixed relative to the corresponding ear seats, the hinged shaft is also fixed relative to the first petal sleeve and the second petal sleeve, and the rotation abrasion ear holes of the hinged structure are avoided. When dismantling, at the in-process of unscrewing the articulated shaft, the clearance between the adjacent lamella of first petal cover and second petal cover diminishes voluntarily gradually, consequently becomes flexible to final automatic disengagement by automatic between first petal cover and second petal cover and the corresponding earhole, consequently makes things convenient for the dismantlement of first petal cover and second petal cover, has thoroughly solved because articulated shaft rotates or earhole warp, with articulated shaft or the difficult problem of tearing of corresponding cover that reasons such as corrosion interlock adhesion lead to.

The front ends of the first petal sleeve and the second petal sleeve are preferably provided with outward-turned flanges, the front ends of the ear holes of the front hinge ear and the rear hinge ear are correspondingly provided with sinking grooves, and the flanges are just embedded into the corresponding sinking grooves. First petal cover and second petal cover are all from the past backward to install in the earhole that corresponds, and the flange plays axial limiting displacement, prevents first petal cover and second petal cover axial float.

The two ends of the hinged shaft are preferably provided with square counter bores 6-1 which extend axially, so that the hinged shaft can be conveniently rotated by a special tool with a square head, and the front shaft section and the rear shaft section of the hinged shaft can be conveniently screwed and detached with the threads of the first petal sleeve and the second petal sleeve respectively.

Furthermore, the bottom of the square counter bore can be provided with an axially extending threaded hole 6-2, so that the square counter bore can be used for installing lifting tools such as screws and lifting rings, and is convenient to lift and assist in dismounting. When not in use, the screw plug can be screwed in to protect the screw thread.

The front end of preceding hinge lug can also the first apron of fixed mounting 8, be protruding structure in the middle of the rear side of first apron, first apron utilizes protruding structure compresses tightly backward the preceding terminal surface of articulated shaft, even the articulated structure receives impact load such as vibration, and through the vice auto-lock principle of spiral between petal cover and the articulated shaft and the dual locking measure that the axial of first apron compressed tightly, can effectively avoid the articulated shaft vibration reverse not hard up.

The rear end of the rear hinge lug can be fixedly provided with a second cover plate 9, and the second cover plate covers the lug hole of the rear hinge lug seat forward and can play a role in dust prevention. The second cover plate may not contact the hinge shaft.

The first cover plate and the second cover plate can be installed and fixed by screws and gaskets.

The hinge structure can be particularly used for the hinge joint of the rocker arm of the coal mining machine and the traction part of the coal mining machine. The articulated ear seat of traction portion acts as preceding, back hinge ear, and the rocker arm hinge ear acts as middle hinge ear, when the rocker arm luffing motion, the swing of rocker arm hinge ear round articulated shaft axis section, and is fixed motionless between first petal cover, second petal cover and the articulated shaft.

The utility model also discloses an installation method to above-mentioned petal hinge structure, specifically earlier in first petal cover 4, second petal cover 5 and wear-resisting cover 7 pack into before articulated ear 1, back articulated ear 3 and the earhole of middle articulated ear 2 respectively, then by preceding back installation articulated shaft 6 makes the articulated shaft pass first petal cover, wear-resisting cover and second petal cover in proper order, and the articulated shaft inserts rotation on one side at this in-process articulated shaft, finally makes the preceding axle section and the back axle section of articulated shaft respectively with first petal cover and second petal cover screw thread close soon and send first petal cover and second petal cover tight expansion respectively and interference fit in articulated ear and the earhole of back articulated ear in the front, preceding articulated ear, back ear, first petal cover, second petal cover and articulated shaft relatively fixed, the pin joint between the axis section of articulated shaft and the wear-resisting cover.

When the two ends of the hinged shaft are provided with the square counter bores 6-1 which axially extend, a tool with a square head can be used for inserting into the square counter bores in the process of installing the hinged shaft, and the tool is utilized to rotate the hinged shaft to enable the front shaft section and the rear shaft section of the hinged shaft to be respectively screwed with the first petal sleeve and the second petal sleeve in a threaded manner to enable the first petal sleeve and the second petal sleeve to respectively expand tightly and to be in interference fit with ear holes of the front hinged lug and the rear hinged lug. When the hinge structure is disassembled, a tool with a square head is inserted into the square counter bore, the hinge shaft is rotated reversely, and the hinge shaft is disassembled through the movement of the spiral pair.

When the bottom of the square counter bore is provided with the axially extending threaded hole 6-2, after the hinge shaft is installed, screw plugs are preferably screwed into the threaded holes at the two ends of the hinge shaft to protect the threads of the threaded holes.

For the hinge structure with the first cover plate, after the hinge shaft is installed, the first cover plate is fixedly installed in the front end groove of the front hinge lug through a screw, a gasket and the like, so that the protruding structure in the middle of the rear side of the first cover plate presses the front end surface of the hinge shaft backwards. Through the self-locking principle of the spiral pair and the double anti-loosening measures of the axial compression of the first cover plate, the hinge shaft can be effectively prevented from loosening and withdrawing due to the fact that the hinge shaft is subjected to impact load and the like.

The utility model is suitable for a there are great vibration, the occasion of impact, and articulated connection reliability is high, and easily dismouting, especially can overcome the problem that traditional hinge structure dismantled the difficulty, maintainability is good.

Claims (9)

1. The utility model provides a petal hinge structure which characterized in that: the novel pedal type wear-resistant hinge comprises a front hinge lug, a middle hinge lug, a rear hinge lug, a first petal sleeve, a second petal sleeve, a hinge shaft and a wear-resistant sleeve, wherein the front hinge lug, the middle hinge lug and the rear hinge lug are coaxially and sequentially arranged according to ear holes and are mutually provided with gaps, the first petal sleeve and the second petal sleeve are respectively installed in the ear holes of the front hinge lug and the rear hinge lug, the wear-resistant sleeve is fixedly installed in the ear hole of the middle hinge lug, the front shaft section, the middle shaft section and the rear shaft section of the hinge shaft are respectively installed in inner holes of the first petal sleeve, the wear-resistant sleeve and the second petal sleeve, the inner holes of the first petal sleeve and the second petal sleeve are respectively provided with front-large rear-small inner cone threads, the thread specifications are respectively M1 and M2, the front shaft section and the rear shaft section of the hinge shaft are respectively provided with front-large rear-small outer cone threads and are respectively screwed with the first petal sleeve and the second petal sleeve threads, and the first petal sleeve and the second petal sleeve are three petal sleeve in a circumferential equal division structure, under the design condition, the three-petal structure assembly is positioned on the same circumference, tangential gaps between two adjacent petals are equal along the radial direction, the cylindrical aperture of the wear-resistant sleeve is d3, M1> d3> M2, and in the installation state, the first petal sleeve and the second petal sleeve are respectively expanded and in interference fit with ear holes of the front hinge ear and the rear hinge ear.

2. The petal hinge construction of claim 1, wherein: the front ends of the first petal sleeve and the second petal sleeve are provided with outward-turned flanges, the front ends of the ear holes of the front hinge ear and the rear hinge ear are correspondingly provided with sinking grooves, and the flanges are just embedded into the corresponding sinking grooves.

3. The petal hinge construction of claim 2, wherein: and two ends of the hinged shaft are respectively provided with a square counter bore extending axially.

4. A petal hinge construction according to claim 3, wherein: the bottom of the square counter bore is provided with an axially extending threaded hole, and a plug screw is installed in the threaded hole in the installation state.

5. The petal hinge construction of claim 1, 2, 3 or 4, wherein: the front end fixed mounting of preceding articulated ear has first apron, is protruding structure in the middle of the rear side of first apron, first apron utilizes protruding structure compresses tightly backward the preceding terminal surface of articulated shaft.

6. The petal hinge construction of claim 5, wherein: the rear end fixed mounting of back articulated ear has the second apron, the second apron is contactless with the articulated shaft, the second apron covers forward the earhole of back articulated ear seat.

7. The petal hinge construction of claim 1, 2, 3 or 4, wherein: the hinged lug seats of the traction part of the coal mining machine serve as the front hinged lug and the rear hinged lug, and the hinged lug of the rocker arm of the coal mining machine serves as the middle hinged lug.

8. The petal hinge construction of claim 5, wherein: the hinged lug seats of the traction part of the coal mining machine serve as the front hinged lug and the rear hinged lug, and the hinged lug of the rocker arm of the coal mining machine serves as the middle hinged lug.

9. The petal hinge construction of claim 6, wherein: the hinged lug seats of the traction part of the coal mining machine serve as the front hinged lug and the rear hinged lug, and the hinged lug of the rocker arm of the coal mining machine serves as the middle hinged lug.

Images