CN214887047U - Split type crushing mechanism with good adaptability and mounting structure thereof - Google Patents

Abstract

The utility model relates to a split type crushing mechanism and mounting structure with good adaptability, crushing mechanism includes the swing arm, the one end of the swing arm casing of swing arm is equipped with the tubular structure of extending from beginning to end, a gyration axle rotation support is in the inner chamber of tubular structure, still be equipped with preceding, back cantilever crane on the swing arm casing, the inner chamber and the tubular structure of preceding cantilever crane communicate with each other, both ends are respectively rotation support on preceding, back cantilever crane around a connecting shaft, fixed mounting has crushing tooth on the connecting shaft, the front portion of gyration axle is connected with the anterior transmission of connecting shaft through the transmission system that is located in preceding cantilever crane, swing arm casing longitudinal symmetry; the mounting structure comprises a mining machine rocker arm and a crushing mechanism, the crushing mechanism is mounted on the inner side of an L-shaped corner of the rocker arm, the front end of a rotating shaft is coaxially connected with the rear end of a gear shaft of a transmission gear in an arm support, and an oil cylinder is connected between the arm support and a swing arm. The utility model discloses can be used to the mining machine of thinner seam exploitation to interchangeability and commonality about having.

Description

Split type crushing mechanism with good adaptability and mounting structure thereof

Technical Field

The utility model relates to a split type crushing mechanism not only is applicable to the aluminium ore mining machine who exploits thinner ore deposit or high-grade thin ore deposit, all has fine adaptability to the mining machine of different specifications, conveyer moreover.

Background

In order to adapt to mining of a thinner ore layer or a high-grade thin ore layer, a rocker arm of a high-power (high-torque) cutting system is generally adopted on an bauxite mining machine, the rocker arm is low in height, compact in structure and high in power density, and a cutting motor arranged in a rocker arm shell occupies a large space in the front-rear direction, so that a conventional crushing device is not arranged in a space between the cutting motor and a cable trough. However, in the actual exploitation of the mining machine, a large amount of high-hardness bauxite often can appear, and these bauxite need pass through below the position where the cutting motor of rocking arm is located after entering the conveyer, but a lot of rocks are massive rocks, can not pass through, finally pile up and lead to the conveyer can't carry, need to shut down and carry out artifical clearance, waste time and energy, still influence the productivity.

Due to the requirement of bauxite layered mining, crushing mechanisms are often required to be arranged at the left rocker arm and the right rocker arm, so that the universality and interchangeability of the left crushing mechanism and the right crushing mechanism are required to be improved.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a split type crushing mechanism with good adaptability can be used to the mining machine of thinner seam exploitation to installation connection to its rocking arm about with the mining machine has interchangeability and commonality.

The utility model discloses a main technical scheme has:

the utility model provides a split type crushing mechanism with good adaptability, includes the swing arm, the swing arm includes swing arm casing, revolving axle and connecting axle, the tubular structure that extends around the one end of swing arm casing is equipped with, the revolving axle sets up the inner chamber at tubular structure, and both ends are supported through bearing rotation respectively around the revolving axle both ends around the inner chamber of tubular structure, swing arm casing includes main casing body and back cantilever crane, and the front portion of main casing body, tubular structure's side are equipped with long and narrow, control the preceding cantilever crane that extends, and the inner chamber of preceding cantilever crane communicates with each other with tubular structure's anterior inner chamber, fixed connection can be dismantled on the main casing body to the back cantilever crane, and with it is relative around the preceding cantilever crane, both ends are the rotation support respectively on preceding cantilever crane and back cantilever crane around the connecting axle, the connecting axle is parallel and keep away from the revolving axle, fixed mounting has broken tooth on the connecting axle, the front part of the rotating shaft is in transmission connection with the front part of the connecting shaft through a transmission system positioned in an inner cavity of the front arm support, the front end of the rotating shaft is provided with a power input interface structure, and the swing arm shells are vertically symmetrical.

The front part of the rotating shaft can be provided with an external gear, the front part of the connecting shaft can be provided with an external spline, the front end and the rear end of the external spline are rotatably supported on the front side wall and the rear side wall of the front arm support, the transmission system is a fixed-shaft gear transmission system, a first gear of the fixed-shaft gear transmission system is externally engaged with the external gear on the rotating shaft according to the transmission direction, and a last gear of the fixed-shaft gear transmission system is sleeved on the connecting shaft and is connected with the front spline of the connecting shaft.

And backing plates can be arranged or not arranged between the rear arm support and the main shell in the front-back direction at the joint of the rear arm support and the main shell, and the rear arm support, the main shell and the backing plates are connected in a positioning way through a plurality of pin shafts.

Preferably, the connecting shaft is sleeved side by side and is circumferentially fixed with a plurality of shaft sleeves, and each shaft sleeve is fixedly provided with a plurality of crushing teeth.

The split type crushing mechanism with good adaptability preferably further comprises a mechanical protection structure, the mechanical protection structure comprises a support and a plurality of rollers mounted on the support, the support is fixed on the front arm support, the axes of the rollers horizontally extend forwards and backwards, the rollers are arranged in an arc region with the axis of the connecting shaft as the axis at intervals, the arc region is lower than the axis of the connecting shaft, the farthest distance from the edge of the roller to the axis of the connecting shaft is larger than the radius of a cutting circle of the crushing teeth, the support is symmetrical forwards and backwards, and the rollers are mounted in the middle of the support in the front and back direction.

Split type crushing mechanism with good adaptability can also include fixing base and hydro-cylinder, the fixing base is C shape structure, relative preceding supporting arm and back supporting arm around being equipped with on it, the swing arm casing with tubular structure articulates for the level around the axle on the fixing base, both ends support respectively on preceding supporting arm and back supporting arm around the tubular structure, the one end of hydro-cylinder articulates on the fixing base, the other end articulates tubular structure's the outside on the swing arm casing, the hydro-cylinder only one, fixed base and swing arm casing's mounted position is placed in the middle around relatively, fixing base longitudinal symmetry.

The fixing base can include end plate, preceding backup pad and back backup pad, fixed connection can be dismantled respectively on the front and back side of end plate to the one end of preceding backup pad and back backup pad, and the other end overhangs, preceding backup pad acts as respectively with back backup pad preceding supporting arm and back supporting arm.

The utility model provides an installation structure of split type crushing mechanism with good adaptability, includes the mining machine rocking arm with split type crushing mechanism with good adaptability, the casing of mining machine rocking arm is the L shape constitutional unit that includes barrel and cantilever crane two parts, the barrel extends around, the cantilever crane extends about, the barrel is located the rear of the one end of cantilever crane, split type crushing mechanism with good adaptability installs in the turning inboard of L shape, fixing base fixed connection is in the side of barrel, the anterior of tubular structure with the rear portion of cantilever crane passes through circular tang structure location connection, circular tang structure is coaxial with the revolving axle, the front end of revolving axle and the rear end coaxial coupling of a drive gear's in the cantilever crane gear.

The rear end of the gear shaft of the transmission gear and the front end of the revolving shaft are respectively provided with an internal spline, and the gear shaft of the transmission gear and the revolving shaft are simultaneously connected with the front spline and the rear spline of one spline shaft.

The utility model has the advantages that:

a power device is not arranged on the swing arm serving as the main body of the crushing mechanism, and only a power input end is arranged, so that the volume of the swing arm is greatly reduced, especially the space occupation in the front-back direction is reduced, and the swing arm can be applied to a low-fuselage mining machine. And the structure of the swing arm itself becomes simple.

Because the structure of the connecting shaft and the crushing teeth replaces the traditional crushing roller, the structure of the crushing part becomes very simple, and the manufacturing cost and the use cost are lower.

Because the crushing teeth and the corresponding shaft sleeves with different parameters are arranged at different positions in the front and back of the connecting shaft according to the actual distribution characteristics of the lumpiness of the rock blocks on the conveying groove of the conveyor in the front and back directions, the rock blocks can be crushed more pertinently, and a better crushing effect can be achieved with more reasonable investment.

Because a drive gear of the mining machine cutting drive system is used as a power device to provide power for the swing arm, the swing arm is arranged on the inner side of the L-shaped corner of the mining machine swing arm, so that the mounting space is saved, and the problem of a power source is solved, and a crushing mechanism can be arranged on a mining machine for mining a thin ore layer or a high-grade thin ore layer, thereby effectively crushing large-block rock blocks, enabling the rock blocks to smoothly pass through the lower part of the mining machine swing arm and avoiding accumulation.

The transmission from the cutting transmission system to the transmission system of the swing arm is connected through the spline shaft, so that overload protection is realized, the transmission stability is improved, and the floating connection of the spline can improve the alignment between the swing arm shell and the transmission gear, so that the transmission stability is improved.

Due to the fact that the mechanical protection structure is arranged, when the swing arm swings downwards, the mechanical protection structure can be in contact with the top surface of the ledge on the front side of the conveyor firstly, the lowest height of the crushing teeth is limited, and the crushing teeth are prevented from damaging the conveyor located right below the crushing teeth.

Because the swinging arm shell and the fixed seat are in vertical symmetry structures, the swinging arm serving as the main body of the split type crushing mechanism can be installed on the mining machine in a left-right interchangeable manner. The fixing seat is arranged into a split type structure, and the split type crushing mechanism can adapt to the rocker arms with different wheelbases by replacing the front supporting plate and the rear supporting plate with different lengths.

As the swing arm shell is provided with the split type detachable connection structure, the split type crusher can adapt to various conveyors with different widths by arranging or not arranging the base plates in the front-back direction between the rear arm support and the main shell body and increasing or decreasing the thickness of the base plates.

The utility model discloses a split type breaker's general interchangeability is good, can reduce a large amount of drawing work, reduces the stock, increases operation rate.

Drawings

FIG. 1 is a schematic view of the connection and installation of the split crushing mechanism of the present invention on a twin drum mining machine;

FIG. 2 is a schematic structural diagram of an embodiment of an assembly composed of the fixed seat, the swing arm and the cylinder;

FIG. 3 is a schematic structural view of the fixing base shown in FIG. 2;

FIG. 4 is a view from the direction B of FIG. 3;

FIG. 5 is a cross-sectional view A-A of FIG. 2;

FIG. 6 is a schematic structural view of a second embodiment of the assembly body composed of the fixed seat, the swing arm and the oil cylinder;

FIG. 7 is a schematic view of the attachment mounting of the embodiment of FIG. 6 to a mining machine swing arm;

FIG. 8 is a schematic structural view of a third embodiment of an assembly body composed of the fixed seat, the swing arm and the oil cylinder;

fig. 9 is a schematic view of the attachment mounting of the embodiment of fig. 8 to a mining machine swing arm.

Reference numerals:

1. a swing arm; 11. a fixed seat; 111. an end plate; 112. a pin; 113. a hinged seat; 114. a front support plate; 1141. a front pin shaft; 1142. a front wear-resistant sleeve; 115. a rear support plate; 1151. a rear pin shaft; 1152. a rear wear-resistant sleeve; 11', a fixing seat; 114'. front support plate; 115' rear support plate; 12. a swing arm housing; 121. a front arm support; 122. a rear arm support; 123. a hinged seat; 124. a transmission system; 1241. a rotating shaft; 1242. a connecting shaft; 125. crushing teeth; 126. a shield; 127. a tubular structure; 1271-; 128. a base plate; 12' a swing arm housing; 1242' connecting shaft; 13. an oil cylinder; 14. a mechanical protective structure;

2. a mining machine rocker arm; 21. a barrel; 211. shallow-groove; 212. a pin hole; 22. a transmission gear; 221. an internal spline; 2', a mining machine rocker arm;

3. a spline shaft;

91. a conveyor.

Detailed Description

The utility model discloses a split type crushing mechanism with good adaptability, as shown in fig. 1-9, including swing arm 1, the swing arm includes swing arm casing 12, revolving axle 1241 and connecting axle 1242, the tubular structure 127 of extending around swing arm casing's one end is equipped with, and the swing arm will round the tubular structure swing. The rotary shaft is arranged in the inner cavity of the tubular structure, and the front end and the rear end of the rotary shaft are respectively and rotatably supported at the front end and the rear end of the inner cavity of the tubular structure through bearings. The swing arm housing comprises a main housing and a rear arm support 122, the tubular structure is a part of the main housing, a long and narrow front arm support 121 extending left and right is arranged at the front part of the main housing and the side of the tubular structure, and the inner cavity of the front arm support is communicated with the inner cavity of the front part of the tubular structure. The rear arm support is detachably and fixedly connected to the main shell and is opposite to the front arm support in the front-back direction, the front end and the rear end of the connecting shaft are rotatably supported on the front arm support and the rear arm support respectively, and the connecting shaft and the rotating shaft are parallel and far away from the rotating shaft. The connecting shaft is fixedly provided with crushing teeth 125. The front part of the rotating shaft is in transmission connection with the front part of the connecting shaft through a transmission system 124 positioned in the inner cavity of the front arm support. The front end of the rotating shaft is a power input end, external power is input from the rotating shaft and is transmitted to the connecting shaft through the transmission system, so that the connecting shaft is fixed to rotate, the crushing teeth rotate along with the connecting shaft, and the rock is crushed. And the front end of the rotating shaft is provided with a power input interface structure. The swing arm housings are vertically symmetrical so that the same swing arm can be mounted either at the left or the right rocker arm of the mining machine.

The front end of revolving axle is as power input end, and for the cutting transmission system who follows the mining machine rocking arm introduces power and provides interface structure, consequently corresponding split type broken mechanism does not need power device such as independent supporting motor or hydraulic motor, compares the structure that current power device and breaker cylinder axial connected gradually, and the front and back size of broken mechanism is for shortening greatly, compares current power device setting in the inside structure of breaker cylinder, the utility model discloses a broken mechanism also correspondingly reduces with upper and lower size about being equal to traditional breaker cylinder department, and is visible the utility model discloses a structure is more compact, consequently will the utility model discloses it is possible to be applied to on the mining machine of thinner ore layer or high-grade thin ore layer exploitation. Moreover, because the utility model discloses replace traditional broken cylinder with the structure of connecting axle with broken tooth, the structure becomes very simple, and manufacturing cost and use cost are lower.

The front part of the rotating shaft is provided with an external gear, the front part of the connecting shaft is provided with an external spline, the front end and the rear end of the external spline on the connecting shaft are rotatably supported on the front side wall and the rear side wall of the front arm support, the transmission system 124 is a fixed shaft gear transmission system, a first gear of the fixed shaft gear transmission system is externally engaged with the external gear on the rotating shaft according to the transmission direction, and a last gear of the fixed shaft gear transmission system is sleeved on the connecting shaft and is connected with the front spline of the connecting shaft.

Preferably, the connecting shaft is sleeved side by side and is circumferentially fixed with a plurality of shaft sleeves, and each shaft sleeve is fixedly provided with a plurality of crushing teeth. The individual crushing teeth on each bushing are preferably circumferentially equispaced. Each shaft sleeve and the connecting shaft can be connected through a plurality of flat keys which are uniformly distributed in the circumferential direction, the circumferential fixing is reliable, and the axial assembly and disassembly of the shaft sleeves are facilitated. The front and rear arm frames have the function of limiting the shaft sleeve forwards and backwards. When a certain broken tooth is damaged, only the broken tooth and the shaft sleeve where the broken tooth is located need to be replaced, and the maintenance is simple and convenient.

In addition, according to the actual distribution characteristics of the rock mass on the conveying groove of the conveyor in the front and rear directions, the crushing teeth and the corresponding shaft sleeves with different parameters can be arranged at different positions in the front and rear of the connecting shaft.

A backing plate 128 may or may not be provided at the junction of the rear arm support and the main housing in the fore-and-aft direction therebetween. The rear arm support, the main shell and the base plate can be connected in a positioning mode through a plurality of pin shafts. When the setting of the shim plates, the distance between the front and rear arm supports is greater than when no shim plates are present, and the re-configured swing arm housing 12' is wider back and forth, so that the crushing mechanism can accommodate a wider conveyor 91. Of course, it is necessary to replace the longer connecting shaft 1242' and add bushings and crushing teeth to the connecting shaft (see fig. 6 and 7).

Install guard shield 126 on the main casing body, the guard shield is in the top of connecting axle, prevents that the rock mass after the breakage from upwards splashing. The shield may also be of a symmetrical configuration to maintain its interchangeability of mounting on both the left and right crushing mechanisms.

The split crushing mechanism with good adaptability further comprises a mechanical protection structure 14 for preventing the crushing teeth from damaging the conveyor located below the crushing mechanism. The mechanical protection structure comprises a support and a plurality of rollers installed on the support, the support is fixed on a front arm support, the axes of the rollers horizontally extend forwards and backwards, the rollers are arranged in an arc-shaped area with the axis of the connecting shaft as the axis at intervals in the circumferential direction, the position of the arc-shaped area is lower than the axis of the connecting shaft, the rollers can freely rotate relative to the support, and the farthest distance from the edge of each roller to the axis of the connecting shaft is larger than the radius of a cutting circle of each crushing tooth. Even if the swing arm is located at the lower swing limit position, the rollers are firstly contacted with the top surface of the front side ledge of the conveyor, so that the crushing teeth can be prevented from cutting the top of the conveyor groove. The support longitudinal symmetry, the gyro wheel is installed the middle part of the fore-and-aft direction of support makes same the support perhaps mechanical protection structure both can install on the left split type crushing mechanism of mining machine, also can install on the split type crushing mechanism on mining machine right side.

The split type crushing mechanism with good adaptability further comprises a fixed seat 11 and an oil cylinder 13, wherein the fixed seat is of a C-shaped structure, and a front supporting arm and a rear supporting arm which are opposite to each other in the front-rear direction are arranged on the fixed seat. The swing arm shell is horizontally hinged to the fixed seat from front to back by taking the tubular structure as a shaft, and the front end and the rear end of the tubular structure are respectively supported on the front supporting arm and the rear supporting arm. One end of the oil cylinder is hinged to the fixed seat, and the other end of the oil cylinder is hinged to the swing arm shell, particularly to the outer side of the tubular structure. Under the telescopic driving of the oil cylinder, the swinging arm shell can swing up and down relative to the fixed seat by taking the tubular structure as a shaft, so that the height of the connecting shaft and the height of the crushing teeth can be adjusted. The installation position of the relative fixed seat and the swing arm shell is preferably centered front and back. The fixing seats are vertically symmetrical, and the same fixing seat can be used for a split type crushing mechanism on the left side of the mining machine and a split type crushing mechanism on the right side of the mining machine.

Further, a front wear sleeve 1142 may be disposed between the front support arm and the tubular structure, and a rear wear sleeve 1152 may be disposed between the rear support arm and the tubular structure. The front and rear wear-resistant sleeves are respectively tightly matched with the front and rear ends of the tubular structure and are respectively in clearance fit with the front and rear supporting arms. The front and rear wear-resistant sleeves can reduce the abrasion of the tubular structure and prolong the service life of the swing arm shell.

The fixing base includes end plate 111, preceding backup pad 114 and back backup pad 115, fixed connection can be dismantled respectively on the front and back side of end plate to the one end of preceding backup pad and back backup pad, and the other end overhangs, preceding backup pad acts as respectively with back backup pad preceding supporting arm and back supporting arm. In the embodiment shown in the drawings, the front and rear support plates are attached to the front and rear sides of the end plate by front pins 1141 and rear pins 1151, respectively. The fixing base adopts split type structure, can make things convenient for the installation of swing arm casing, front and back wear-resisting cover etc. moreover through changing preceding backup pad 114 ', back backup pad 115 ' of different length, length also changes about corresponding fixing base 11 ', the result can make split type broken mechanism adapts to the mining machine rocking arm 2 ' of different wheel bases (refer to fig. 8, 9, mining machine rocking arm 2 ' is longer, needs to change longer front and back backup pad). When the oil cylinder is positioned between the end plate and the swing arm shell, the upper part of the end plate and the lower part of the tubular structure are respectively provided with the hinged seats 113 and 123, and two ends of the oil cylinder are respectively connected with the two hinged seats. Due to the vertically symmetrical characteristics of the fixed seat and the swing arm shell, the end plate of the fixed seat is vertically symmetrically provided with two interface structures for mounting the hinge seat 113, and the outer side of the tubular structure is vertically symmetrically provided with two interface structures 1271 and 1272 for mounting the hinge seat 123.

The utility model also discloses a split type crushing mechanism's mounting structure with good adaptability, including mining machine rocking arm 2 with split type crushing mechanism with good adaptability, the casing of mining machine rocking arm is the L shape constitutional unit including barrel 21 and cantilever crane two parts, extend around the barrel, extend about the cantilever crane, the barrel is located the rear of the one end of cantilever crane, split type crushing mechanism with good adaptability installs at the turning inboard of L shape, but make full use of space to do not have the extra occupation of space in the front and back direction, can realize breaker's installation on the short fuselage mining machine. The fixed seat is fixedly connected to the side face of the cylinder, the front portion of the tubular structure is connected with the rear portion of the arm support in a positioning mode through a circular spigot structure, and the circular spigot structure is coaxial with the rotating shaft so as to keep the axis of the swing arm shell in a swinging mode to be fixed relative to the mining machine rocker arm. The front end of the revolving shaft is coaxially connected with the rear end of a gear shaft of a transmission gear 22 of a cutting transmission system in the arm support. The transmission gear replaces a traditional motor to provide power for the rotation of the crushing teeth.

In this embodiment, the connection mode of the fixing seat and the cylinder is as follows: a shallow groove 211 with a plane groove bottom surface is cut on the side surface of the cylinder body, a pin hole 212 is arranged on the groove bottom surface, the back surface of the end plate is attached to the groove bottom surface, and the end plate and the cylinder body are positioned through two pins (namely the pins 112) on one surface (namely the groove bottom surface).

The rear end of the gear shaft of the transmission gear is provided with an internal spline 221, the front end of the rotating shaft is also provided with an internal spline, and the internal spline forms the power input interface structure. The gear shaft and the revolving shaft of the transmission gear are simultaneously connected with the front part and the rear part of one spline shaft 3 through splines. Due to the floating nature of the spline coupling, it is possible to provide alignment between the swing arm housing 12 and the drive gear 22, thus improving the stability of the transmission. In addition, when the hard rock is crushed or the rock is jammed, the spline shaft is broken first to protect the cutting transmission system and the transmission system of the crushing mechanism in the front arm support, so that the transmission reliability can be improved.

Further, a front end cover is sleeved on the radial outer portion of the front end of the rotating shaft, and the rear portion of the front end cover is embedded and fixed in the tubular structure. The rear end of the gear shaft of the transmission gear is sleeved with a rear end cover radially outwards, and the front part of the rear end cover is embedded and fixed on the arm support. The front end cover and the rear end cover are connected in an axial and radial positioning mode through a circular spigot structure. The front end cover is fixed on the tubular structure, the rear end cover is fixed on the arm support, the front end cover and the rear end cover are positioned through the circular seam allowance structure, and the front part of the tubular structure and the rear part of the arm support are positioned through the circular seam allowance structure to play the same role, so that the swinging center line of the swinging arm shell is positioned, and the joint of the transmission system in the swinging arm and the cutting transmission system is protected.

The terms front and back herein correspond to top and bottom, respectively, from the perspective of fig. 1.

Claims (10)

1. The utility model provides a split type crushing mechanism with good adaptability which characterized in that: including the swing arm, the swing arm includes swing arm casing, revolving axle and connecting axle, the tubular structure that extends around the one end of swing arm casing is equipped with, the revolving axle sets up the inner chamber at tubular structure, and both ends are in through bearing rotation support respectively around the revolving axle both ends around the inner chamber of tubular structure, swing arm casing includes main casing and back cantilever crane, and the front portion of main casing, tubular structure's side are equipped with long and narrow, control the preceding cantilever crane that extends, and the inner chamber of preceding cantilever crane communicates with each other with tubular structure's anterior inner chamber, fixed connection can be dismantled on the main casing to the back cantilever crane, and with it is relative around the preceding cantilever crane, both ends are respectively rotation support on preceding cantilever crane and back cantilever crane around the connecting axle, the connecting axle is parallel and keeps away from the revolving axle with the revolving axle, fixed mounting has broken tooth on the connecting axle, the front portion of revolving axle is connected with the anterior transmission of connecting axle through the transmission system that is located the inner chamber of preceding cantilever crane, the front end of the rotating shaft is provided with a power input interface structure, and the swing arm shell is vertically symmetrical.

2. The split type crushing mechanism with good adaptability of claim 1, wherein: the front part of the rotating shaft is provided with an external gear, the front part of the connecting shaft is provided with an external spline, the front end and the rear end of the external spline are rotatably supported on the front side wall and the rear side wall of the front arm support, the transmission system is a fixed-shaft gear transmission system, a first gear of the fixed-shaft gear transmission system is externally engaged with the external gear on the rotating shaft according to the transmission direction, and a last gear of the fixed-shaft gear transmission system is sleeved on the connecting shaft and is connected with the front spline of the connecting shaft.

3. The split type crushing mechanism with good adaptability of claim 1, wherein: and backing plates are arranged or not arranged between the rear arm support and the main shell in the front-back direction at the joint of the rear arm support and the main shell, and the rear arm support, the main shell and the backing plates are connected in a positioning way through a plurality of pin shafts.

4. The split type crushing mechanism with good adaptability of claim 1, wherein: the connecting shaft is sleeved side by side and is circumferentially fixed with a plurality of shaft sleeves, and a plurality of crushing teeth are fixedly arranged on each shaft sleeve.

5. The split type crushing mechanism with good adaptability of claim 1, wherein: the main casing body is provided with a shield, the shield is covered above the connecting shaft, and the shield is symmetrical around the shield.

6. The split type crushing mechanism with good adaptability of claim 1, wherein: the mechanical protection structure comprises a support and a plurality of rollers arranged on the support, the support is fixed on the front arm support, the axes of the rollers horizontally extend from front to back, the rollers are arranged in an arc-shaped area with the axis of the connecting shaft as the axis at intervals in the circumferential direction, the position of the arc-shaped area is lower than the axis of the connecting shaft, the farthest distance from the edge of the roller to the axis of the connecting shaft is larger than the radius of a cutting circle of the crushing tooth, the support is symmetrical in the front and back direction, and the rollers are arranged in the middle of the support in the front and back direction.

7. The split type crushing mechanism with good adaptability of claim 1, 2, 3, 4, 5 or 6, is characterized in that: still include fixing base and hydro-cylinder, the fixing base is C shape structure, relative preceding supporting arm and back supporting arm around being equipped with on it, the swing arm casing with tubular structure articulates for the level around the axle on the fixing base, tubular structure supports respectively on preceding supporting arm and back supporting arm at both ends around, the one end of hydro-cylinder articulates on the fixing base, the other end articulates tubular structure's the outside on the swing arm casing, the hydro-cylinder only one, relative fixing base and swing arm casing's mounted position is placed in the middle around, fixing base longitudinal symmetry.

8. The split type crushing mechanism with good adaptability of claim 7, wherein: the fixing base includes end plate, preceding backup pad and back backup pad, fixed connection can be dismantled respectively on the front and back side of end plate to the one end of preceding backup pad and back backup pad, and the other end overhangs, preceding backup pad acts as respectively with back backup pad preceding supporting arm and back supporting arm.

9. The utility model provides a split type crushing mechanism's mounting structure with good adaptability which characterized in that: the split type crushing mechanism with good adaptability comprises a mining machine rocker arm and the split type crushing mechanism with good adaptability as claimed in claim 7 or 8, wherein a shell of the mining machine rocker arm is an L-shaped structural unit comprising a cylinder and an arm support, the cylinder extends forwards and backwards, the arm support extends leftwards and rightwards, the cylinder is located behind one end of the arm support, the split type crushing mechanism with good adaptability is installed on the inner side of a corner of the L shape, a fixing seat is fixedly connected to the side face of the cylinder, the front portion of a tubular structure and the rear portion of the arm support are connected in a positioning mode through a circular spigot structure, the circular spigot structure is coaxial with a rotary shaft, and the front end of the rotary shaft is coaxially connected with the rear end of a gear shaft of a transmission gear in the arm support.

10. The split type crushing mechanism mounting structure with good adaptability of claim 9, wherein: the rear end of the gear shaft of the transmission gear and the front end of the revolving shaft are respectively provided with an internal spline, and the gear shaft of the transmission gear and the revolving shaft are simultaneously connected with the front spline and the rear spline of one spline shaft.

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