CN217210803U - Two-stage combined type rocker arm single-roller short-wall coal mining machine mining height detection device - Google Patents
Two-stage combined type rocker arm single-roller short-wall coal mining machine mining height detection device Download PDFInfo
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- CN217210803U CN217210803U CN202220350190.XU CN202220350190U CN217210803U CN 217210803 U CN217210803 U CN 217210803U CN 202220350190 U CN202220350190 U CN 202220350190U CN 217210803 U CN217210803 U CN 217210803U
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Abstract
The utility model relates to a doublestage combined type rocking arm single drum shortwall coal-winning machine adopts high detection device, the device is including the many circles absolute value encoder installation external member that are used for detecting the pivot angle of the relative first order rocking arm of first order rocking arm installation external member and are used for detecting the pivot angle of the relative first order rocking arm of second order rocking arm installation external member, pivot angle sensor installation external member sets up the side of adopting in the articulated department of first order rocking arm and transition frame, many circles absolute value encoder installation external member set up in first order rocking arm casing, on a drive gear among the drive mechanism of first order rocking arm, through the pivot angle that detects the relative transition frame of first order rocking arm respectively and the pivot angle of the relative first order rocking arm of second order rocking arm, calculate the height of first order rocking arm and second order rocking arm respectively, again with both can obtain the height of coal-winning machine with the radius value stack of cylinder. The utility model discloses the height of adopting intellectual detection system needs of doublestage combined type rocking arm single drum shortwall coal-winning machine have been satisfied.
Description
Technical Field
The utility model relates to a adopt high detection device of coal-winning machine with doublestage rocking arm.
Background
The coal seam mining of the existing short-wall working face is more and more developed towards the direction of large mining height and intellectualization. In order to meet the requirement of ultra-large mining height of a short-wall working face, a brand-new two-stage combined type rocker arm single-roller short-wall coal mining machine is developed based on a traditional single-roller coal mining machine structure. The traditional single-roller or double-roller coal mining machine rocker arm is a single-stage independent rocker arm, and the mining height detection device and the detection method thereof cannot be directly applied to the double-stage combined type rocker arm single-roller short-wall coal mining machine. Therefore, a new mining height detection scheme suitable for the double-stage combined type rocker arm single-drum short-wall coal mining machine needs to be researched.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a doublestage combined type rocking arm single drum shortwall coal-winning machine adopts high detection device satisfies the height intelligent detection needs of adopting of doublestage combined type rocking arm single drum shortwall coal-winning machine.
The utility model discloses a main technical scheme has:
the mining height detection device comprises a swing angle sensor installation kit for detecting the swing angle of a first-stage rocker arm relative to a transition frame and a multi-circle absolute value encoder installation kit for detecting the swing angle of a second-stage rocker arm relative to the first-stage rocker arm, wherein the swing angle sensor installation kit is arranged on the mining side of the hinged position of the first-stage rocker arm and the transition frame of the two-stage composite rocker arm single-drum short-wall coal mining machine, and the multi-circle absolute value encoder installation kit is arranged in a first-stage rocker arm shell and on the near coal wall end of a transmission gear in a transmission mechanism of the first-stage rocker arm.
The swing angle sensor mounting kit comprises a swing angle sensor assembly, a base, a rotary gland assembly, a connecting rod assembly and a rocker arm connecting seat assembly, the base is fixed on the mining side end face of the transition frame, the base is of a cylindrical structure, a swing angle sensor in the swing angle sensor assembly is arranged in the base, the rotor of the swing angle sensor is coaxial with the hinge axis of the first-stage rocker arm and the transition frame, the main body of the rotary gland component is embedded into the base and is in rotating fit connection with the base, an axial limiting structure is arranged between the main body of the rotary gland component and the base, the main body of the rotary gland component is coaxially connected with the rotor of the swing angle sensor, the rocker arm connecting seat component is fixed on the first-stage rocker arm, the connecting rod component is arranged on the rocker arm connecting seat component, the connecting rod of the connecting rod assembly is embedded into the rotary gland assembly along the radial direction of the main body of the rotary gland assembly.
The rotary gland component is characterized in that an annular groove is formed in the outer cylindrical surface of the main body of the rotary gland component, which is connected with the base in a running fit mode, a plurality of fastening pins are installed on the side wall of the base at intervals, the fastening pins are connected to the base through thread sections of the fastening pins in a threaded mode, pin shaft sections of the fastening pins are inserted into the annular groove, and the annular groove and the fastening pins form the axial limiting structure between the main body of the rotary gland component and the base.
The connecting rod assembly further comprises a long pin shaft and a fixing seat, the fixing seat is fixedly connected to the rocker arm connecting seat assembly, two coaxial holes in the fixing seat are respectively penetrated through two ends of the long pin shaft, limiting pins are mounted at two tail ends of the long pin shaft, the extending direction of the long pin shaft is parallel to the hinge axis of the first-level rocker arm and the transition frame, the connecting rod comprises two sections with different thicknesses, one section with different thicknesses is an optical axis section, a waist-shaped hole is formed in the thick section, the connecting rod passes through the waist-shaped hole sleeve and is arranged in the middle of the long pin shaft, and the optical axis section is radially embedded into a sliding groove in the rotary gland assembly and used for accommodating the optical axis section, and the depth of the sliding groove is larger than the length of the optical axis section.
The rocker arm seat in the rocker arm connecting seat assembly can be accurately positioned on the mining side end face of the first-stage rocker arm through a plane spigot structure and is fastened through screws, the fixed seat can be accurately positioned through the matching of the circular boss on the fixed seat and the circular groove on the rocker arm seat, and then the fixed seat is fixed on the rocker arm seat through screws.
The swing angle sensor assembly can further comprise a sensor seat and a rotating block, one end of the sensor seat is fixed on the base, the other end of the sensor seat is embedded into the main body of the rotary gland assembly and is in running fit with the main body of the rotary gland assembly, the rotating block is located between the sensor seat and the main body of the rotary gland assembly, one end of the rotating block is embedded into the sensor seat and is in running fit with the sensor seat, a rectangular boss is arranged at the other end of the rotating block and is embedded into a long strip hole at one end of the main body of the rotary gland assembly, a pair of large side faces are in running fit with each other, a stator of the swing angle sensor is fixedly installed in the sensor seat, and a long round rotor of the swing angle sensor penetrates through the sensor seat and then is in running fit with a long round hole groove at one end of the rotating block.
And sealing elements are respectively arranged among the sensor seat, the base, the main body of the rotary gland component and the rotating block for sealing.
The installation kit of the multi-turn absolute value encoder comprises a multi-turn absolute value encoder assembly, a large end cover, a connecting shaft and a small end cover, wherein the small end cover is fixed at the end part of the coal wall side of a large gear in a transmission mechanism of a first-stage rocker arm, the large gear is in transmission connection with a rotating shaft through an idler wheel, one end of the connecting shaft is fixedly connected with the small end cover, the other end of the connecting shaft is fixedly connected with a rotor of the multi-turn encoder in the multi-turn absolute value encoder assembly, a stator of the multi-turn encoder is installed on the large end cover, and the rotor of the multi-turn encoder is coaxial with the large gear.
The big end cover is arranged on a bearing seat, and a radial seal is arranged between the big end cover and the bearing seat. The bearing seat is fixed in the first-stage rocker arm shell, and one end of the large gear is rotatably supported on the bearing seat through a bearing.
One end of the connecting shaft is fixedly connected with the small end cover through being clamped in a groove of a boss at the outer end of the small end cover, the boss at the outer end of the small end cover is inserted into the large end cover, a radial sealing structure is arranged between the boss at the outer end and the large end cover, the small end cover is positioned at the end part of the large gear through a spigot structure, and a radial sealing structure is also arranged at the inner hole of the large gear between the small end cover and the large gear.
The utility model has the advantages that:
the utility model discloses adopt every level of independent detection to calculate the method that adds up again to the height detection of adopting of doublestage combined type rocking arm single drum shortwall coal-winning machine, because the method and the structure that the single-stage independent detected are all fairly simple, and it is ripe reliable moreover, consequently the height detection of whole coal-winning machine has very high reliability and credibility.
The first-stage rocker arm mining height detection is based on a swing angle sensor mode, the rotation angle of the rocker arm is dynamically detected along with the swing of the rocker arm, and the detection within the swing range of 0-90 degrees can be realized. The coaxial synchronous rotation that the pivot angle sensor follows the first order rocking arm is realized through setting up the connecting rod and stirring the rotatory gland subassembly, through being used for holding the optical axis section of connecting rod on the rotatory gland subassembly the degree of depth of spout sets to being greater than the length of optical axis section realizes carrying out vector compensation to the machining error of first order rocking arm and transition frame and the assembly error between the two.
All structural parts outside cables and protective sleeves in the swing angle sensor installation kit are made of stainless steel materials, so that the overall rust-resistant and corrosion-resistant functions of the swing angle sensor installation kit are enhanced.
The second-stage rocker arm height detection is based on a multi-turn absolute value encoder mode, and angle detection within the range of 0-n360 degrees (n is the number of rotation turns) can be achieved. The method has simple structure and high calculation precision. And the corresponding detection device is fixedly arranged in the first-stage rocker arm shell, so that the detection device can be prevented from being corroded by rain and being damaged by smashing coal blocks and gangue, and the detection device is reliable in installation and maintenance and long in service life.
Drawings
Fig. 1 is a top view of a rocker arm portion of a two-stage composite rocker arm single drum shortwall shearer equipped with the mining height detection device of the present invention;
fig. 2 is a front view of a rocker arm portion of a two-stage compound rocker arm single drum shortwall shearer with the mining height detection device of the present invention installed;
FIG. 3 is an enlarged view of section I of FIG. 1;
FIG. 4 is an enlarged view of a portion II of FIG. 1;
FIG. 5 is a schematic structural component view of one embodiment of a swing angle sensor assembly;
FIG. 6(a) is a schematic structural view of one embodiment of the turning block;
FIG. 6(b) is a cross-sectional view taken along line A-A of FIG. 6 (a);
fig. 7 is a schematic front view of a dual-stage combined type rocker arm single-drum short-wall shearer provided with the mining height detection device of the present invention in an initial position;
FIG. 8 is a schematic representation of the geometry of the rocker arms of the various stages in the condition shown in FIG. 7;
fig. 9 is a schematic front view of a rocker arm of a two-stage combined type rocker arm single-drum short-wall shearer provided with the mining height detection device of the present invention after swinging for a certain angle;
fig. 10 is a schematic view showing the geometrical relationship of the rocker arms of the respective stages in the state shown in fig. 9.
Description of the drawings:
1. a transition frame;
2. a first-stage rocker arm; 21. a bull gear; 22. an idler pulley; 23. a rotating shaft;
3. a second stage rocker arm;
41. a swing angle sensor assembly; 411. a swing angle sensor; 412. a sensor seat; 413. rotating the block; 414. a cable fixing seat; 415. a cable connector; 416. a circuit board; 42. a base; 43. rotating the gland assembly; 44. a connecting rod assembly; 441. a long pin shaft; 442. a connecting rod; 443. a fixed seat; 45. the rocker arm is connected with the seat assembly;
51. a multi-turn absolute value encoder assembly; 52. a large end cap; 53. a connecting shaft; 54. a small end cap;
6. and (3) a roller.
Detailed Description
As shown in fig. 1-7 and 9, the utility model discloses a high detection device is adopted to doublestage combined type rocking arm single drum shortwall coal-winning machine (can be for short adopt high detection device), including the pivot angle sensor installation external member that is used for detecting the pivot angle of 2 relative transition framves 1 of first order rocking arm and the many circles absolute value encoder installation external member that is used for detecting the pivot angle of 3 relative first order rocking arms of second order rocking arm, pivot angle sensor installation external member sets up the sky side in the articulated department of the first order rocking arm of doublestage combined type rocking arm single drum shortwall coal-winning machine and transition frame, many circles absolute value encoder installation external member sets up in the first order rocking arm casing, the tip of the nearly coal wall of a drive gear in the drive mechanism of first order rocking arm.
The swing angle sensor mounting kit includes a swing angle sensor assembly 41, a base 42, a rotary gland assembly 43, a link assembly 44, and a rocker arm link assembly 45. The base is fixed on the mining side end face of the transition frame and is of a cylindrical structure. The swing angle sensor 411 in the swing angle sensor assembly 41 is installed in the base, and the rotor of the swing angle sensor is coaxial with the hinge axis a of the first-stage rocker arm and the transition frame. The main part of rotatory gland subassembly is followed the tip embedding base of base and is connected with base normal running fit, is equipped with axial limit structure between the main part of rotatory gland subassembly and the base, prevents that rotatory gland from breaking away from with the base from the axial. The main body of the rotary gland component is coaxially connected with the rotor of the swing angle sensor. The rocker arm connecting seat assembly is fixed on the first-stage rocker arm, the connecting rod assembly is arranged on the rocker arm connecting seat assembly, and the connecting rod 442 of the connecting rod assembly is embedded into the rotary gland assembly along the radial direction of the main body of the rotary gland assembly. When the first-stage rocker arm swings, the rocker arm connecting seat assembly drives the connecting rod assembly and further drives the connecting rod of the connecting rod assembly to synchronously swing relative to the transition frame 1, the connecting rod stirs the main body of the rotary gland assembly to rotate, and the main body of the rotary gland assembly drives the rotor of the swing angle sensor to synchronously rotate, so that the swing angle detected by the swing angle sensor is equal to the swing angle of the first-stage rocker arm relative to the transition frame.
The swing angle sensor assembly 41 may further include a sensor holder 412, a rotating block 413, a circuit board 416, a cable connector 415, and a cable holder 414. One end of the sensor mount 412 is fixed to the base and the other end is embedded in and rotationally engaged with the body of the rotary gland assembly. The turning block is positioned between the sensor seat and the main body of the rotary gland component, one end of the turning block is embedded into the sensor seat and is in running fit with the sensor seat, the other end of the turning block is provided with a rectangular boss, the rectangular boss is embedded into a long hole at one end of the main body of the rotary gland component, a pair of large side faces are in clearance fit with each other, and the main body of the rotary gland component drives the turning block to turn. The stator of the swing angle sensor 411 is fixedly installed in the sensor seat, the long circular rotor of the swing angle sensor penetrates through the sensor seat and then is in clearance fit with the long circular hole groove at one end of the rotating block 413, and the rotating block drives the rotor of the swing angle sensor to rotate. Furthermore, sealing elements (such as O-shaped rings) are arranged between the sensor seat and the base, between the main body of the rotary gland assembly and between the sensor seat and the rotating block, and between the sensor seat and the base as well as between the main body of the rotary gland assembly and between the sensor seat and the rotating block, so that the swinging angle sensor can be effectively prevented from being contacted and damaged by external dust and water.
In the embodiment shown in the attached drawings, an annular groove is formed in an outer cylindrical surface of the main body of the rotary gland component, which is connected with the base in a rotating fit manner, a plurality of fastening pins are installed on the side wall of the base at intervals, the fastening pins are connected to the base through threaded sections of the fastening pins in a threaded manner, pin shaft sections of the fastening pins are inserted into the annular groove, and the annular groove and the pin shaft sections of the fastening pins form the axial limiting structure between the main body of the rotary gland component and the base.
The connecting rod assembly further comprises a long pin shaft 441 and a fixed seat 443 in addition to the connecting rod 442, the fixed seat is fixedly connected to the rocker arm connecting seat assembly, two ends of the long pin shaft respectively penetrate through two coaxial holes in the fixed seat, and limiting pins are mounted at two tail ends of the long pin shaft to prevent the long pin shaft from jumping out of the rocker arm connecting seat from any end of the long pin shaft. The extending direction of the long pin shaft is parallel to the hinge axis of the first-stage rocker arm and the transition frame. One end of the connecting rod is provided with a waist-shaped hole, the connecting rod is sleeved in the middle of the long pin shaft through the waist-shaped hole, the other end of the connecting rod is an optical axis section, the optical axis section is radially embedded into a sliding groove in the rotary gland assembly, and the connecting rod drives the rotary gland assembly to rotate around the axis of the connecting rod. The depth of the sliding groove for accommodating the optical axis section is preferably larger than the length of the optical axis section, so that the processing error of the first-stage rocker arm and the transition frame and the assembly error between the first-stage rocker arm and the transition frame can be compensated in a vector mode.
In the attached drawing, the connecting rod comprises two sections with different thicknesses, the thinner section is an optical axis section, and the waist-shaped hole is formed in the thicker section. The rocker arm seat in the rocker arm connecting seat assembly 45 is accurately positioned on the mining side end face of the first-stage rocker arm through a plane spigot structure and is fastened through screws. The fixed seat is precisely positioned by matching the circular boss on the fixed seat with the circular groove on the rocker arm seat and then fixed on the rocker arm seat by screws.
Under the condition that the size and the structure of the first-stage rocker arm and the transition frame are known, as long as the swing angle of the first-stage rocker arm relative to the transition frame is detected through the swing angle sensor installation kit, the height of any point on the first-stage rocker arm, including the height from a rotating shaft serving as the rotation center of the second-stage rocker arm to the bottom plate, can be calculated according to the geometrical relation.
The multi-turn absolute value encoder installation kit comprises a multi-turn absolute value encoder assembly 51, a large end cover 52, a connecting shaft 53 and a small end cover 54. The small end cover is fixed at the end part of the coal wall side of the large gear 21 in the transmission mechanism of the first-stage rocker arm through a screw. The big gear wheel is in transmission connection with a rotating shaft 23 through an idler wheel 22, one end of a connecting shaft is fixedly connected with a small end cover, the other end of the connecting shaft is fixedly connected with a rotor of a multi-turn encoder in the multi-turn absolute value encoder assembly, a stator of the multi-turn encoder is installed on a big end cover, the big end cover is installed on a bearing seat, and a radial seal is arranged between the big end cover and the bearing seat. The bearing block is fixed in the first-stage rocker housing, and one end of the large gear 21 is rotatably supported on the bearing block through a bearing. The rotor of the multi-turn encoder is coaxial with the bull gear, and the bull gear is the transmission gear. The rotating shaft is a rotating shaft of the second-stage rocker arm which swings relative to the first-stage rocker arm. When the large gear rotates, the small end cover, the connecting shaft and the rotor of the multi-circle encoder are sequentially driven to synchronously rotate, so that the rotation angle measured by the multi-circle encoder is equal to the swing angle of the large gear. Under the condition that the parameters of the large gear, the idler gear and the rotating shaft are determined, the rotating speeds of the large gear and the rotating shaft have a determined proportional relation, so that the rotating angle of the rotating shaft can be converted according to the proportional relation, namely the rotating angle of the second-stage rocker arm relative to the first-stage rocker arm, and further the swing height data of the second-stage rocker arm can be calculated, wherein the swing height data comprises the height data from the rotating central axis of the roller on the second-stage rocker arm to the rotating shaft.
One end of the connecting shaft in the attached drawing is clamped in the groove of the boss at the outer end of the small end cover to realize the fixed connection with the small end cover. The outer end boss of the small end cover is inserted into the large end cover, a radial sealing structure is arranged between the outer end boss and the large end cover, the small end cover is positioned at the end part of the large gear through a spigot structure, and a radial sealing structure is also arranged at the inner hole of the large gear between the small end cover and the large gear. And a cavity enclosed by the large end cover, the small end cover and the large gear is communicated with an oil pool in the first-stage rocker arm shell and between the large gear and the radial outer side through the bearing. The sealing structure between the large end cover and the small end cover and the bearing seat and the sealing structure between the small end cover and the large gear can prevent gear oil from leaking from the cavity to the outer end of the large end cover and the inner hole of the large gear.
The mining height of the double-stage composite rocker arm single-roller short-wall coal mining machine can be obtained by adding the radius of the roller to the sum of the height from the rotating central axis of the roller to the rotating shaft on the second-stage rocker arm and the height from the rotating shaft serving as the rotating center of the second-stage rocker arm to the bottom plate. When the angles of the first and second-stage rocker arms are continuously adjusted, the swing angle sensor installation kit and the multi-turn absolute value encoder installation kit measure the swing angles of the rocker arms at all stages in real time, and then real-time mining height data of the composite rocker arm single-drum short-wall coal mining machine are obtained.
By adopting the mining height detection device of the double-stage combined type rocker arm single-roller short-wall coal mining machine, the swing angle beta 1 of the first-stage rocker arm relative to the transition frame and the swing angle beta 2 of the second-stage rocker arm relative to the first-stage rocker arm are respectively detected, then the heights of the first-stage rocker arm and the second-stage rocker arm are respectively calculated, and finally the mining height of the double-stage combined type rocker arm single-roller short-wall coal mining machine can be obtained by superposing the first-stage rocker arm and the second-stage rocker arm and adding the radius value of the roller 6.
The swing angle β 1 of the first-stage rocker arm relative to the transition frame and the swing angle β 2 of the second-stage rocker arm relative to the first-stage rocker arm are swing angle variations under the relative positional relationship when the first-stage rocker arm and the second-stage rocker arm are at the initial positions, respectively (as shown in fig. 9 and 10). The initial position of the primary and secondary rocker arms refers to the position when both are in the horizontal position (as shown in fig. 7 and 8). Since the horizontal position is also the lowest position for the first rocker arm, the direction of oscillation of the first rocker arm relative to the transition frame is always clockwise in fig. 7 to 10.
The mining height calculation formula of the double-stage combined type rocker arm single-roller short-wall coal mining machine is as follows:
H1＝h0+L1×sin(β1-θ1-θ2)+L2×sin(β1±β2)+R；
when the swinging direction of the second-stage rocker arm relative to the first-stage rocker arm is the same as that of the first-stage rocker arm relative to the transition frame, the plus or minus sign in the formula is a plus or minus sign, and the minus sign is taken when the swinging direction is opposite.
Where h0 is the distance from point A to the floor at the initial position;
l1 is the length of the first stage rocker arm, i.e., the length of straight segment AB; l2 is the length of the second stage rocker arm, i.e., the length of straight line segment BC;
A. b, C points respectively represent the hinge axis of the first-stage rocker arm and the transition frame, the axis of the second-stage rocker arm relative to the rotating shaft of the first-stage rocker arm and the rotating center line of the roller on the second-stage rocker arm at the initial position;
and R is the radius of the roller on the second-stage rocker arm.
For a given coal mining machine, h0, L1, L2, theta 1, theta 2 and R are all known parameters, beta 1 is measured by a swing angle sensor installation kit, and beta 2 is obtained by converting the data measured by a multi-turn absolute value encoder installation kit through a determined speed ratio.
The derivation process of the above mining height calculation formula is specifically described below:
as shown in fig. 7 and 8, when the first-stage rocker arm and the second-stage rocker arm are both in the initial positions, the B point of the first-stage rocker arm and the C point of the second-stage rocker arm are equal in height, and the corresponding heights are as follows:
h0-L1×sin(θ1+θ2)，
the mining height H0 of the double-stage combined type rocker arm single-roller short-wall coal mining machine is as follows:
H0＝h0-L1×sin(θ1+θ2)+R。
at a certain moment after the first-stage rocker arm and the second-stage rocker arm swing, when the first-stage rocker arm and the second-stage rocker arm are in the states shown in fig. 9 and 10, the swing angle of the first-stage rocker arm relative to the initial position is beta 1, and the height h1 of the point B of the first-stage rocker arm is as follows:
h1＝h0+L1×sin(β1-θ1-θ2)；
assuming that the relative position relationship between the second-stage rocker arm and the first-stage rocker arm is kept unchanged, namely after the first-stage rocker arm swings rigidly by an angle beta 1 with the second-stage rocker arm, the height from the point C to the point B of the second-stage rocker arm is M1. And in fact, the first-stage rocker arm swings while the second-stage rocker arm swings relative to the first-stage rocker arm, and the swing angle is beta 2, so that the height from the actual position of the point C of the second-stage rocker arm to the point B is M2,
M2＝L2×sin(β1±β2)；
when the swinging direction of the second-stage rocker arm relative to the first-stage rocker arm is the same as that of the first-stage rocker arm relative to the transition frame, the plus or minus sign in the formula is a plus or minus sign, and the minus sign is taken when the swinging direction is opposite.
Therefore, the mining height H1 of the two-stage compound rocker arm single-drum shortwall shearer is:
H1＝h1+M2+R＝h0+L1×sin(β1-θ1-θ2)+L2×sin(β1±β2)+R。
Claims (16)
1. the utility model provides a high detection device is adopted to double-stage combined type rocking arm single drum shortwall coal-winning machine which characterized in that: the device comprises a swing angle sensor installation kit for detecting the swing angle of a first-stage rocker arm relative to a transition frame and a multiturn absolute value encoder installation kit for detecting the swing angle of a second-stage rocker arm relative to the first-stage rocker arm, wherein the swing angle sensor installation kit is arranged on the goaf side of the hinged position of the first-stage rocker arm and the transition frame of a double-stage combined type rocker arm single-roller short-wall coal mining machine, and the multiturn absolute value encoder installation kit is arranged in the shell of the first-stage rocker arm and on the near coal wall end of a transmission gear in a transmission mechanism of the first-stage rocker arm.
2. The mining height detection device of the double-stage combined type rocker arm single-drum short-wall shearer as claimed in claim 1, characterized in that: the swing angle sensor mounting kit comprises a swing angle sensor assembly, a base, a rotary gland assembly, a connecting rod assembly and a rocker arm connecting seat assembly, the base is fixed on the mining side end face of the transition frame, the base is of a cylindrical structure, a swing angle sensor in the swing angle sensor assembly is arranged in the base, the rotor of the swing angle sensor is coaxial with the hinge axis of the first-stage rocker arm and the transition frame, the main body of the rotary gland component is embedded into the base and is in rotating fit connection with the base, an axial limiting structure is arranged between the main body of the rotary gland component and the base, the main body of the rotary gland component is coaxially connected with the rotor of the swing angle sensor, the rocker arm connecting seat component is fixed on the first-stage rocker arm, the connecting rod component is arranged on the rocker arm connecting seat component, the connecting rod of the connecting rod assembly is embedded into the rotary gland assembly along the radial direction of the main body of the rotary gland assembly.
3. The mining height detection device of the double-stage composite rocker arm single-drum short-wall shearer as claimed in claim 2, characterized in that: the rotary gland component is characterized in that an annular groove is formed in the outer cylindrical surface of the main body of the rotary gland component, which is connected with the base in a running fit mode, a plurality of fastening pins are installed on the side wall of the base at intervals, the fastening pins are connected to the base through thread sections of the fastening pins in a threaded mode, pin shaft sections of the fastening pins are inserted into the annular groove, and the annular groove and the fastening pins form the axial limiting structure between the main body of the rotary gland component and the base.
4. The mining height detection device of the double-stage combined type rocker arm single-drum short-wall shearer as claimed in claim 3, characterized in that: the connecting rod assembly further comprises a long pin shaft and a fixing seat, the fixing seat is fixedly connected to the rocker arm connecting seat assembly, two coaxial holes in the fixing seat are respectively penetrated through two ends of the long pin shaft, limiting pins are mounted at two tail ends of the long pin shaft, the extending direction of the long pin shaft is parallel to the hinge axis of the first-level rocker arm and the transition frame, the connecting rod comprises two sections with different thicknesses, one section with different thicknesses is an optical axis section, a waist-shaped hole is formed in the thick section, the connecting rod passes through the waist-shaped hole sleeve and is arranged in the middle of the long pin shaft, and the optical axis section is radially embedded into a sliding groove in the rotary gland assembly and used for accommodating the optical axis section, and the depth of the sliding groove is larger than the length of the optical axis section.
5. The mining height detection device of the double-stage combined type rocker arm single-drum short-wall shearer as claimed in claim 4, wherein: the rocker arm seat in the rocker arm connecting seat assembly is accurately positioned on the mining side end face of the first-stage rocker arm through a plane spigot structure and is fastened through screws, and the fixed seat is accurately positioned through the matching of the circular boss on the fixed seat and the circular groove on the rocker arm seat and is fixed on the rocker arm seat through screws.
6. The mining height detection device of the double-stage compound rocker arm single-drum shortwall shearer as defined in claim 2, 3, 4 or 5, wherein: the swing angle sensor assembly further comprises a sensor seat and a rotating block, one end of the sensor seat is fixed on the base, the other end of the sensor seat is embedded into the main body of the rotary gland assembly and is in running fit with the main body of the rotary gland assembly, the rotating block is located between the sensor seat and the main body of the rotary gland assembly, one end of the rotating block is embedded into the sensor seat and is in running fit with the sensor seat, a rectangular boss is arranged at the other end of the rotating block and is embedded into a long strip hole at one end of the main body of the rotary gland assembly, a pair of large side faces are in running fit with each other, a stator of the swing angle sensor is fixedly installed in the sensor seat, and a long round rotor of the swing angle sensor penetrates through the sensor seat and then is in running fit with a long round hole groove at one end of the rotating block.
7. The mining height detection device of the double-stage compound rocker arm single-drum short-wall shearer as recited in claim 6, characterized in that: and sealing elements are respectively arranged among the sensor seat, the base, the main body of the rotary gland component and the rotating block for sealing.
8. The mining height detection device of the two-stage compound rocker arm single-drum shortwall shearer as defined in claim 1, 2, 3, 4 or 5, wherein: the installation kit of the multi-turn absolute value encoder comprises a multi-turn absolute value encoder assembly, a large end cover, a connecting shaft and a small end cover, wherein the small end cover is fixed at the end part of the coal wall side of a large gear in a transmission mechanism of a first-stage rocker arm, the large gear is in transmission connection with a rotating shaft through an idler wheel, one end of the connecting shaft is fixedly connected with the small end cover, the other end of the connecting shaft is fixedly connected with a rotor of the multi-turn encoder in the multi-turn absolute value encoder assembly, a stator of the multi-turn encoder is installed on the large end cover, and the rotor of the multi-turn encoder is coaxial with the large gear.
9. The mining height detection device of the double-stage composite rocker arm single-drum short-wall shearer as claimed in claim 8, wherein: the big end cover is arranged on a bearing seat, a radial seal is arranged between the big end cover and the bearing seat, the bearing seat is fixed in the first-stage rocker arm shell, and one end of the big gear is rotatably supported on the bearing seat through a bearing.
10. The mining height detection device of the double-stage compound rocker arm single-drum short-wall shearer as recited in claim 9, characterized in that: one end of the connecting shaft is fixedly connected with the small end cover by being clamped in a groove of a boss at the outer end of the small end cover, the boss at the outer end of the small end cover is inserted into the large end cover, a radial sealing structure is arranged between the boss at the outer end and the large end cover, the small end cover is positioned at the end part of the large gear through a spigot structure, and a radial sealing structure is also arranged at the position of an inner hole of the large gear between the small end cover and the large gear.
11. The mining height detection device of the double-stage combined type rocker arm single-drum short-wall shearer as claimed in claim 6, wherein: the installation kit of the multi-turn absolute value encoder comprises a multi-turn absolute value encoder assembly, a large end cover, a connecting shaft and a small end cover, wherein the small end cover is fixed at the end part of the coal wall side of a large gear in a transmission mechanism of a first-stage rocker arm, the large gear is in transmission connection with a rotating shaft through an idler wheel, one end of the connecting shaft is fixedly connected with the small end cover, the other end of the connecting shaft is fixedly connected with a rotor of the multi-turn encoder in the multi-turn absolute value encoder assembly, a stator of the multi-turn encoder is installed on the large end cover, and the rotor of the multi-turn encoder is coaxial with the large gear.
12. The mining height detection device of the two-stage compound rocker arm single-drum short-wall shearer as defined in claim 11, wherein: the big end cover is arranged on a bearing seat, a radial seal is arranged between the big end cover and the bearing seat, the bearing seat is fixed in the first-stage rocker arm shell, and one end of the big gear is rotatably supported on the bearing seat through a bearing.
13. The mining height detection device of the two-stage compound rocker arm single-drum short-wall shearer as recited in claim 12, characterized in that: one end of the connecting shaft is fixedly connected with the small end cover by being clamped in a groove of a boss at the outer end of the small end cover, the boss at the outer end of the small end cover is inserted into the large end cover, a radial sealing structure is arranged between the boss at the outer end and the large end cover, the small end cover is positioned at the end part of the large gear through a spigot structure, and a radial sealing structure is also arranged at the position of an inner hole of the large gear between the small end cover and the large gear.
14. The mining height detection device of the double-stage combined type rocker arm single-drum short-wall shearer as claimed in claim 7, wherein: the installation kit of the multi-turn absolute value encoder comprises a multi-turn absolute value encoder assembly, a large end cover, a connecting shaft and a small end cover, wherein the small end cover is fixed at the end part of the coal wall side of a large gear in a transmission mechanism of a first-stage rocker arm, the large gear is in transmission connection with a rotating shaft through an idler wheel, one end of the connecting shaft is fixedly connected with the small end cover, the other end of the connecting shaft is fixedly connected with a rotor of the multi-turn encoder in the multi-turn absolute value encoder assembly, a stator of the multi-turn encoder is installed on the large end cover, and the rotor of the multi-turn encoder is coaxial with the large gear.
15. The mining height detection device of the double-stage compound rocker arm single-drum short-wall shearer as recited in claim 14, characterized in that: the big end cover is arranged on a bearing seat, a radial seal is arranged between the big end cover and the bearing seat, the bearing seat is fixed in the first-stage rocker arm shell, and one end of the big gear is rotatably supported on the bearing seat through a bearing.
16. The mining height detection device of the double-stage compound rocker arm single-drum short-wall shearer as recited in claim 15, characterized in that: one end of the connecting shaft is fixedly connected with the small end cover through being clamped in a groove of a boss at the outer end of the small end cover, the boss at the outer end of the small end cover is inserted into the large end cover, a radial sealing structure is arranged between the boss at the outer end and the large end cover, the small end cover is positioned at the end part of the large gear through a spigot structure, and a radial sealing structure is also arranged at the inner hole of the large gear between the small end cover and the large gear.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220350190.XU CN217210803U (en) | 2022-02-21 | 2022-02-21 | Two-stage combined type rocker arm single-roller short-wall coal mining machine mining height detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220350190.XU CN217210803U (en) | 2022-02-21 | 2022-02-21 | Two-stage combined type rocker arm single-roller short-wall coal mining machine mining height detection device |
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| Publication Number | Publication Date |
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| CN217210803U true CN217210803U (en) | 2022-08-16 |
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|---|---|---|---|
| CN202220350190.XU Active CN217210803U (en) | 2022-02-21 | 2022-02-21 | Two-stage combined type rocker arm single-roller short-wall coal mining machine mining height detection device |
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| Country | Link |
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| CN (1) | CN217210803U (en) |
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