CN116147696B - Device and method for monitoring connection strength of coal mining machine body - Google Patents
Device and method for monitoring connection strength of coal mining machine body Download PDFInfo
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- CN116147696B CN116147696B CN202211738954.3A CN202211738954A CN116147696B CN 116147696 B CN116147696 B CN 116147696B CN 202211738954 A CN202211738954 A CN 202211738954A CN 116147696 B CN116147696 B CN 116147696B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
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Abstract
The application discloses a device and a method for monitoring the connection strength of a coal cutter body, which relate to the technical field of mechanical connection strength detection and comprise a first monitoring mechanism, a second monitoring mechanism and a signal receiving module, wherein the first monitoring mechanism comprises a plurality of connecting rods for connecting a left traction part and a right traction part, and a first strain sensor and a first vibration sensor which are arranged on the connecting rods; the second monitoring mechanism comprises a pin shaft for connecting the electric cabinet with the left traction part, a pin shaft for connecting the electric cabinet with the right traction part, and a second strain sensor and a second vibration sensor which are arranged in the pin shaft; the electric cabinet is internally provided with a signal receiving module and a data processing module, and signals sent by the first strain sensor, the first vibration sensor, the second strain sensor and the second vibration sensor are transmitted to the signal receiving module. The application can improve the monitoring accuracy rate of the failure of the coal cutter body connector.
Description
Technical Field
The application relates to the technical field of mechanical connection strength detection, in particular to a device and a method for monitoring connection strength of a coal mining machine body.
Background
The coal mining machine body comprises a left traction part, an electric cabinet and a right traction part which are sequentially connected, and because the coal mining machine body vibrates violently in the working process of the coal mining machine, the condition that a connecting piece is loose often occurs, the connecting piece is not easy to find in time when the connecting piece is loose or broken, and when the connecting piece is loose or broken, the machine body continues to operate, equipment is damaged slightly, and a large accident is caused by heavy weight.
At present, aiming at the lack of a monitoring device for the connection reliability of the coal mining machine, problems are avoided on site mainly by manually and periodically inspecting a connecting piece, but the problems are limited by underground severe environments and experience levels of workers, and the situation that the machine body of the coal mining machine is damaged due to failure of the machine body connection cannot be found in time still exists.
Disclosure of Invention
The application provides a device for monitoring the connection strength of a coal cutter body in order to improve the monitoring accuracy of failure of the connection piece of the coal cutter body.
In a first aspect, the application provides a device for monitoring the connection strength of a coal cutter body, which adopts the following technical scheme:
the device comprises a first monitoring mechanism, a second monitoring mechanism and a signal receiving module, wherein the first monitoring mechanism comprises a plurality of connecting rods used for connecting a left traction part and a right traction part, and a first strain sensor and a first vibration sensor which are arranged on the connecting rods;
the second monitoring mechanism comprises a pin shaft for connecting the electric cabinet with the left traction part, a pin shaft for connecting the electric cabinet with the right traction part, and a second strain sensor and a second vibration sensor which are arranged in the pin shaft; the pin shaft is internally provided with a mounting groove for mounting the second strain sensor and the second vibration sensor, and the second strain sensor and the second vibration sensor are arranged on the side wall of the mounting groove;
the electric cabinet is internally provided with a signal receiving module and a data processing module, signals sent by the first strain sensor, the first vibration sensor, the second strain sensor and the second vibration sensor are transmitted to the signal receiving module, and the data processing module is used for converting the signals in the signal receiving module into data and recording the data.
By adopting the technical scheme, the connecting rod is arranged between the left traction part and the right traction part, the first strain sensor is used for monitoring the stress deformation of the connecting rod, the first vibration sensor is used for monitoring the vibration frequency of the connecting rod, and if the data change of the first strain sensor collected by the data processing module is abrupt change or exceeds a limit value, the connection between the left traction part and the right traction part is about to be invalid; if the data change of the first vibration sensor collected by the data processing module is abrupt or exceeds a limit value, the connection between the left traction part and the right traction part is loose; the second strain sensor is used for monitoring the shear stress of the pin shaft, and the second vibration sensor is used for monitoring the vibration frequency of the pin shaft; if the data change of the second strain sensor acquired by the data processing module is suddenly changed or exceeds a limit value, the connection between the electric cabinet and the left traction part or the right traction part is about to be invalid; if the data change of the second vibration sensor collected by the data processing module is abrupt or exceeds a limit value, the connection between the electric cabinet and the left traction part or the right traction part is loose; operators can monitor the connection strength of the coal cutter body in real time through the data recorded by the data processing module, so that the coal cutter can be stopped and overhauled in time.
Optionally, a first clamping assembly is arranged on the connecting rod, the first clamping assembly comprises a first mounting plate and first clamping pieces arranged on two sides of the first mounting plate, and the first strain sensor and the first vibration sensor are fixedly arranged on the first mounting plate; the first clamping piece comprises two clamping plates which are connected in a rotating mode, and one end, far away from the rotating end of the clamping plates, of the clamping plates is detachably connected with the connecting rod.
Through adopting above-mentioned technical scheme, first strain transducer with first vibration sensor is installed on the connecting rod through first clamping component, through the detection to the stress deformation and the vibration frequency of first installation board, realizes indirectly the detection to the stress deformation and the vibration frequency of connecting rod to realize the joint strength monitoring between left traction portion and the right traction portion.
Optionally, the grip block is close to the one end of connecting rod is provided with the reinforcement strip, the reinforcement strip perpendicular to the connecting rod axis sets up, supply on the connecting rod the holding tank of reinforcement strip joint.
Through adopting above-mentioned technical scheme, the reinforcement strip joint that sets up on the grip block is in the holding tank of connecting rod to strengthen the connection steadiness between first clamping component and the connecting rod, reduce because the detection error that first clamping component is not hard up and produce.
Optionally, the first clamping assembly is provided with two sets of opposite on the connecting rod, and the first mounting plate of the other set of first clamping assembly is also provided with the first strain sensor and the first vibration sensor.
By adopting the technical scheme, the first strain sensor and the first vibration sensor are also provided with two groups which are opposite to each other, and the same rod end on the connecting rod is subjected to stress deformation and vibration frequency detection; the two first strain sensors and the two first vibration sensors are calibrated with each other; one first strain sensor detects the tensile strain of the connecting rod, the other first strain sensor detects the compressive strain of the connecting rod, if the absolute value deviation of the data displayed by the two first strain sensors is smaller, the two first sensors are normal, and if the absolute value deviation of the data displayed by the two first strain sensors is larger, the first sensors are damaged; when the data displayed by the two first vibration sensors are similar, the two first vibration sensors are normal, and when the data displayed by the two first vibration sensors have larger deviation, the first sensor is damaged, so that the condition of error detection results caused by sensor faults is reduced.
Optionally, two installation bars are arranged at intervals on the connecting rod, the middle part of each installation bar is rotationally connected to the connecting rod, second clamping assemblies are arranged at two ends of each installation bar, each second clamping assembly comprises a second mounting plate arranged between the two installation bars, second clamping pieces connected with the corresponding installation bars are arranged at two ends of each second mounting plate, and the first strain sensor and the first vibration sensor are fixed on the corresponding second mounting plates.
By adopting the technical scheme, the connecting rod is rotatably provided with two mounting rods, the first strain sensor and the first vibration sensor are fixed on the second mounting plate, and the stress deformation and the vibration frequency of the connecting rod are monitored through the stress deformation and the vibration frequency generated by the mounting rods; the setting of installation pole has enlarged the stress deformation and the vibration frequency of connecting rod, has improved first monitoring mechanism's monitoring accuracy.
Optionally, a temperature compensator is disposed on the first mounting plate.
Through adopting above-mentioned technical scheme, temperature compensator's setting is used for reducing the influence that temperature caused first mounting panel or second mounting panel stress deformation, reduces the monitoring error that first monitoring mechanism receives the temperature influence and appears, and the coal-winning machine fuselage joint strength monitoring device of being convenient for uses in different seasons.
Optionally, be fixed with in the mounting groove keep away from the open-ended on the inside wall be used for with the second strain sensor with the butt board of second vibration sensor, still the activity is provided with in the mounting groove be used for with the gusset plate that second strain sensor and second vibration sensor offset, be provided with on the round pin axle and be used for the drive the driving piece that the gusset plate removed.
Through adopting above-mentioned technical scheme, after being fixed in second strain sensor and second vibration sensor on the mounting groove lateral wall, driving piece drive gusset plate is moved towards being close to second strain sensor direction, supports second strain sensor and second vibration sensor simultaneously, and second strain sensor and second vibration sensor are difficult for taking place not hard up under the centre gripping of butt board and gusset plate, have reduced because second strain sensor and second vibration sensor send out the detection error that the pine between the round pin axle and lead to the fact.
Optionally, the driving piece include rotate connect in epaxial actuating lever of round pin, the actuating lever wears to locate in the gusset plate, and with gusset plate threaded connection just does not follow the actuating lever and rotate, epaxial still being provided with of round pin is used for limiting actuating lever pivoted locking piece.
By adopting the technical scheme, the driving rod is in threaded connection with the reinforcing plate, and the reinforcing plate can move in a direction far away from or close to the second strain sensor when the driving rod is rotated; when the reinforcing plate abuts against the protection shell and the protection shell, the locking piece locks the driving rod to reduce the situation that the reinforcing plate moves to a proper position and then moves again.
Optionally, an expanding edge is arranged on one end face of the pin shaft, the locking piece comprises a locking bolt penetrating through the expanding edge, and a locking threaded hole for the locking bolt to be in threaded connection is formed in the driving rod along the axis direction of the driving rod.
Through adopting above-mentioned technical scheme, extend and wear to establish locking bolt on the edge, rotate when the actuating lever for after the gusset plate moved to suitable position, with locking bolt and the locking screw hole threaded connection on the actuating lever, realize the locking to the actuating lever.
On the other hand, the application provides a method for monitoring the connection strength of the coal cutter body, which is used for detecting the connection strength of the coal cutter by using the device for monitoring the connection strength of the coal cutter body.
In summary, the present application includes at least one of the following beneficial effects:
1. the first clamping assemblies on the connecting rod are provided with two pairs of two groups, and the first mounting plates of the first clamping assemblies of each group are provided with a first strain sensor and a first vibration sensor, so that the two first strain sensors and the two first vibration sensors can be mutually calibrated in the running process of the coal mining machine, and the monitoring result errors caused by the faults of the first strain sensors or the first vibration sensors are reduced;
2. the connecting rod is rotationally connected with two mounting rods, and the two ends of each mounting rod are provided with a first strain sensor and a first vibration sensor through a second clamping assembly, so that the stress deformation of the connecting rod is enlarged by the mounting rods, and the monitoring precision of the first strain sensor and the first vibration sensor is improved;
3. the temperature compensator is arranged on the first mounting plate, so that the strain influence of the temperature on the first mounting plate is reduced, and the monitoring error of the first strain sensor is reduced.
Drawings
FIG. 1 is a schematic view of a shearer body structure after the shearer body is installed in accordance with embodiment 1 of the present application;
FIG. 2 is a schematic view of explosion of a shearer body showing the installation position of a second monitoring mechanism on the shearer body of embodiment 1 of the present application;
FIG. 3 is a schematic view of a first clamping assembly according to a first embodiment of the present application;
FIG. 4 is a schematic view of a first clamping member according to a first embodiment of the present application;
fig. 5 is a schematic view of a pin structure according to a first embodiment of the present application;
FIG. 6 is a schematic cross-sectional view of a pin according to a first embodiment of the present application;
FIG. 7 is a schematic view of a connecting rod according to a second embodiment of the present application;
fig. 8 is a schematic view of a connecting rod according to a third embodiment of the present application.
Reference numerals illustrate: 1. a left traction part; 2. an electric control box; 3. a right traction section; 4. a connecting rod; 41. a first clamping assembly; 411. a first mounting plate; 412. a first clamping member; 4121. a clamping plate; 4122. reinforcing strips; 42. a mounting rod; 43. a second clamping assembly; 431. a second mounting plate; 432. a second clamping member; 44. a temperature compensator; 5. a first strain sensor; 6. a first vibration sensor; 7. a pin shaft; 71. a mounting groove; 72. an abutting plate; 73. a reinforcing plate; 74. a driving rod; 741. locking the threaded hole; 75. a locking member; 76. an expanding edge; 8. a second strain sensor; 81. a strain sensitive sheet; 82. a protective case 9, a second vibration sensor; 91. a vibration sensor sheet; 92. a protective housing.
Detailed Description
The application is described in further detail below with reference to fig. 1-8.
Embodiment one:
referring to fig. 1 and 2, the connection strength monitoring device for a coal cutter body disclosed in the embodiment of the application comprises a first monitoring mechanism and a second monitoring mechanism, wherein the first monitoring mechanism comprises a plurality of connecting rods 4 for connecting a left traction part 1 and a right traction part 3, and a first strain sensor 5 and a first vibration sensor 6 which are arranged on the connecting rods 4, in the embodiment, the connecting rods 4 are specifically arranged as threaded rods, and the connecting rods 4 are specifically arranged four and uniformly arranged on the periphery side of an electric cabinet 2. Referring to fig. 3 and 4, the connecting rod 4 is provided with a first clamping assembly 41, and the first clamping assembly 41 includes a first mounting plate 411 and first clamping members 412 fixed to both sides of the first mounting plate 411; the first strain sensor 5 and the first vibration sensor 6 are fixed on the first mounting plate 411, and the connecting rod 4 is indirectly monitored through direct monitoring of the vibration frequency and strain of the first mounting plate 411; the first clamping member 412 includes two clamping plates 4121 rotatably connected, and one end of the two clamping plates 4121 away from the rotating end thereof is detachably connected to the connecting rod 4.
In this embodiment, two bolts are threaded at the end of the clamping plate 4121 away from the rotating end thereof, and a threaded hole for threaded connection of the bolts is formed in the connecting rod 4, so as to realize detachable connection of the clamping plate 4121 and the connecting rod 4. When the connection between the left traction part 1 and the right traction part 3 is loose or is about to lose efficacy, the vibration frequency of the connecting rod 4 is obviously changed, the connecting rod 4 is strained under the tensile force action of the left traction part 1 and the right traction part 3, the first vibration sensor 6 can output the vibration frequency signal of the connecting rod 4, and the first strain sensor 5 can output the strain signal of the connecting rod 4.
Referring to fig. 3 and 4, in order to reduce a detection error caused by connection looseness between the first clamping member 412 and the connecting rod 4, a reinforcing bar 4122 is welded at one end of the clamping plate 4121, which is close to the connecting rod 4, the reinforcing bar 4122 is perpendicular to the axis of the connecting rod 4, and a receiving groove for clamping the reinforcing bar 4122 is formed in the connecting rod 4. The temperature compensator 44 is fixed on the first mounting plate 411, so that the influence of temperature on the deformation of the first mounting plate 411 is reduced, and the monitoring error of the first monitoring mechanism is reduced.
Referring to fig. 2 and 5, the second monitoring mechanism includes a pin 7 interference-fitted between the electric cabinet 2 and the left traction portion 1, a pin 7 interference-fitted between the electric cabinet 2 and the right traction portion 3, and a second strain sensor 8 and a second vibration sensor 9 fixed in the pin 7; the pin shaft 7 is internally provided with a mounting groove 71, in the embodiment, four mounting surfaces are formed in the mounting groove 71, and the adjacent mounting surfaces are arranged at 90 degrees. The second strain sensor 8 and the second vibration sensor 9 are respectively fixed to two adjacent mounting surfaces. The second strain sensor 8 monitors the shear stress of the pin 7 and the second vibration sensor 9 monitors the vibration frequency of the pin 7.
A signal receiving module is arranged in the electric cabinet 2 and is coupled with a data processing module; the signals sent by the first strain sensor 5, the first vibration sensor 6, the second strain sensor 8 and the second vibration sensor 9 are transmitted into the signal receiving module, the data processing module converts and collects the signals received by the signal receiving module, and the data change curves monitored by the first strain sensor 5, the first vibration sensor 6, the second strain sensor 8 and the second vibration sensor 9 are recorded. An early warning system is arranged in the electric cabinet 2, and when the data acquired by the data processing module suddenly changes or exceeds a limit value, the early warning system can give an alarm or prompt to remind operators of abnormal connection of the coal mining machine body and control the electric cabinet 2 to automatically stop the coal mining machine.
Referring to fig. 6, in order to reduce the monitoring error caused by the loose connection between the second strain sensor 8 and the second vibration sensor 9 and the pin shaft 7, and to generate a false alarm, an abutment plate 72 is integrally formed on the inner side wall of the mounting groove 71 far from the opening of the mounting groove, and a reinforcing plate 73 is movably disposed in the mounting groove 71. The second strain sensor 8 includes a strain gauge 81 and a protective case 82, and the second vibration sensor 9 includes a vibration gauge 91 and a protective case 92; the abutting plate 72 abuts against the protective housing 82 and the protective housing 92, and the reinforcing plate 73 can also move to abut against the protective housing 82 and the protective housing 92 to clamp and reinforce the second strain sensor 8 and the second rotation sensor, so that the second strain sensor 8 and the second rotation sensor are not easy to loosen; and is not in contact with the strain gauge 81 and the vibration gauge 91, and does not affect the use effects of the second strain sensor 8 and the second rotation sensor.
Referring to fig. 6, a driving member for driving the reinforcing plate 73 to move is provided on the pin shaft 7, the driving member is a driving rod 74 rotatably connected to the pin shaft 7, and a bearing is fixed to the driving rod 74 to achieve rotational connection with the inner side wall of the pin shaft 7. The driving rod 74 passes through the reinforcing plate 73 and is in threaded connection with the reinforcing plate 73, a guide block 731 is fixed on the reinforcing plate 73, and a guide groove for the guide block 731 to slide is formed in the inner side wall of the mounting groove; the reinforcing plate 73 is driven to move along the axial direction of the pin shaft 7 by rotating the driving rod 74 until the reinforcing plate 73 abuts against the protective housing 82 and the protective housing 92. An expanding edge 76 is integrally formed on the end face of the pin shaft 7 far away from the opening of the mounting groove 71, a locking piece 75 is arranged on the expanding edge 76, the locking piece 75 is a locking bolt penetrating through the expanding edge 76, and a locking threaded hole 741 is formed in a rod section of the driving rod 74, which is positioned outside the mounting groove 71; when the driving rod 74 rotates to tightly press the reinforcing plate 73 against the protective housing 82 and the protective housing 92, the driving rod 74 can be locked by screwing the locking bolt with the locking threaded hole 741 on the driving rod 74, so that the possibility of the driving rod 74 rotating again is reduced.
The implementation principle of the device for monitoring the connection strength of the coal cutter body provided by the embodiment of the application is as follows: after the connecting rod 4 and the bearing are installed on the coal cutter body, the first strain sensor 5 and the first vibration sensor 6 are installed on the connecting rod 4 through the first clamping component 41; the second strain sensor 8 and the second vibration sensor 9 are stuck or fixed on two adjacent mounting surfaces in the bearing mounting groove 71 through bolts, so that the protective shell 82 and the protective shell 92 are abutted against the abutting plate; the driving rod 74 is then rotated so that the reinforcing plate and the protective housing 82 are abutted against the protective housing 92, and thereafter the locking bolt is screwed into the locking screw hole 741 in the driving rod 74 to lock the driving rod 74. Starting the coal mining machine, recording data monitored by the first strain sensor 5, the first vibration sensor 6, the second strain sensor 8 and the second vibration sensor 9 by the data processing module, and prompting or early warning by the early warning system according to data changes recorded by the data acquisition device. When the data in the data collector exceeds the limit value, the coal mining machine is automatically stopped.
Embodiment two:
the difference between this embodiment and the first embodiment is that: referring to fig. 7, another set of first clamping assemblies 41 is further disposed on the connecting rod 4, and the first strain sensor 5 and the first vibration sensor 6 are also disposed on the first mounting plate 411 of the other first clamping assembly 41. The two groups of first clamping components 41 are oppositely arranged on the connecting rod 4, so that the two first strain sensors 5 and the two first strain sensors 5 monitor the same rod section of the connecting rod 4; a first strain sensor 5 monitors the tensile strain of the connecting rod, i.e. the elongation of the connecting rod 4; the other first strain sensor 5 monitors the compressive strain of the connecting rod 4, namely the shortening amount of the connecting rod 4; if the values of the elongation and the shortening of the connecting rod 4 displayed by the two first strain sensors 5 are close, the two first strain sensors 5 are normal; if the values of the elongation and the shortening displayed by the two first strain sensors 5 are greatly different, the condition that the first strain sensors 5 are abnormal is indicated; the operator can compare the data output by the signals transmitted by the two first strain sensors 5, so as to reduce monitoring errors caused by the abnormality of the first strain sensors 5. Similarly, the fault condition of the first vibration sensor 6 may be determined based on the data conditions displayed by the two first vibration sensors 6.
Embodiment III:
the present embodiment differs from the first embodiment in that: referring to fig. 8, two mounting rods 42 are arranged on the connecting rod 4 at intervals, and the centers of the mounting rods 42 are hinged with the connecting rod 4; the two ends of the two mounting rods 42 are provided with second clamping assemblies 43, the second clamping assemblies 43 comprise second mounting plates 431 positioned between the two mounting rods 42, the first strain sensor 5 and the first vibration sensor 6 are fixed on the second mounting plates 431, second clamping pieces 432 fixedly connected with the mounting rods 42 are fixed at the two ends of the second mounting plates 431, and the second clamping pieces 432 are identical in structure with the first clamping pieces 412; the second mounting plate 431 is also fitted with a temperature compensator 44 at the end near the connecting rod 4.
When the connecting rod 4 is subjected to vibration or deformation under stress, the mounting rod 42 hinged to the connecting rod 4 vibrates and deforms along with the connecting rod 4, and the vibration and stress deformation generated by the connecting rod 4 are amplified by the arrangement of the mounting rod 42. In the present embodiment, the first strain sensor 5 monitors the strain generated by the connection rod 4 by the strain generated by the mounting rod 42, and the first vibration sensor 6 monitors the vibration frequency of the connection rod 4 by the vibration of the mounting rod 42. The implementation principle of the embodiment is the same as that of the embodiment.
The above embodiments are not intended to limit the scope of the present application, so: all equivalent changes in structure, shape and principle of the application should be covered in the scope of protection of the application.
Claims (9)
1. The utility model provides a coal-winning machine fuselage joint strength monitoring devices which characterized in that: the device comprises a first monitoring mechanism, a second monitoring mechanism and a signal receiving module, wherein the first monitoring mechanism comprises a plurality of connecting rods (4) for connecting a left traction part (1) and a right traction part (3), and a first strain sensor (5) and a first vibration sensor (6) which are arranged on the connecting rods (4);
the second monitoring mechanism comprises a pin shaft (7) for connecting the electric cabinet (2) with the left traction part (1), a pin shaft (7) for connecting the electric cabinet (2) with the right traction part (3), and a second strain sensor (8) and a second vibration sensor (9) which are arranged in the pin shaft (7); the pin shaft (7) is internally provided with a mounting groove (71) for mounting the second strain sensor (8) and the second vibration sensor (9), and the second strain sensor (8) and the second vibration sensor (9) are arranged on the side wall of the mounting groove (71);
the electric cabinet (2) is internally provided with a signal receiving module and a data processing module, the first strain sensor (5), the first vibration sensor (6), the second strain sensor (8) and the signals sent by the second vibration sensor (9) are transmitted to the signal receiving module, and the data processing module is used for converting the signals in the signal receiving module into data and recording the data.
2. The coal mining machine body connection strength monitoring device according to claim 1, wherein: a first clamping assembly (41) is arranged on the connecting rod (4), the first clamping assembly (41) comprises a first mounting plate (411) and first clamping pieces (412) arranged on two sides of the first mounting plate (411), and the first strain sensor (5) and the first vibration sensor (6) are fixedly arranged on the first mounting plate (411); the first clamping piece (412) comprises two clamping plates (4121) which are connected in a rotating mode, and one end, far away from the rotating end of the clamping plates (4121), of each clamping plate is detachably connected with the connecting rod (4).
3. The coal mining machine body connection strength monitoring device according to claim 2, wherein: the clamping plate (4121) is close to one end of connecting rod (4) is provided with reinforcement strip (4122), reinforcement strip (4122) perpendicular to connecting rod (4) axis sets up, supply on connecting rod (4) the holding tank of reinforcement strip (4122) joint.
4. The coal mining machine body connection strength monitoring device according to claim 2, wherein: the first clamping assemblies (41) are provided with two groups on the connecting rod (4), and the first mounting plates (411) of the other groups of the first clamping assemblies (41) are also provided with the first strain sensors (5) and the first vibration sensors (6).
5. The coal mining machine body connection strength monitoring device according to claim 1, wherein: the device is characterized in that two mounting rods (42) are arranged on the connecting rod (4) at intervals, the middle of each mounting rod (42) is rotationally connected to the connecting rod (4), second clamping assemblies (43) are arranged at two ends of each mounting rod (42), each second clamping assembly (43) comprises a second mounting plate (431) arranged between the two mounting rods (42), second clamping pieces (432) connected with the corresponding mounting rods (42) are arranged at two ends of each second mounting plate (431), and the first strain sensor (5) and the first vibration sensor (6) are fixed on the corresponding second mounting plates (431).
6. The coal mining machine body connection strength monitoring device according to claim 4, wherein: a temperature compensator (44) is arranged on the first mounting plate (411).
7. The coal mining machine body connection strength monitoring device according to claim 1, wherein: be fixed with on keeping away from the inside wall of opening in mounting groove (71) be used for with second strain sensor (8) with abutting plate (72) of second vibration sensor (9), still activity be provided with in mounting groove (71) be used for with gusset plate (73) that second strain sensor (8) and second vibration sensor (9) offset, be provided with on round pin axle (7) and be used for the drive gusset plate (73) remove.
8. The coal mining machine body connection strength monitoring device according to claim 7, wherein: the driving piece comprises a driving rod (74) rotatably connected to the pin shaft (7), the driving rod (74) penetrates through the reinforcing plate (73) and is in threaded connection with the reinforcing plate (73) and does not rotate along with the driving rod (74), and the pin shaft (7) is further provided with a locking piece (75) used for limiting the driving rod (74) to rotate.
9. The coal mining machine body connection strength monitoring device according to claim 8, wherein: an expanding edge (76) is arranged on one end face of the pin shaft (7), the locking piece (75) comprises a locking bolt penetrating through the expanding edge (76), and a locking threaded hole (741) for the locking bolt to be in threaded connection is formed in the driving rod (74) along the axis direction of the driving rod.
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| CN202211738954.3A CN116147696B (en) | 2022-12-31 | 2022-12-31 | Device and method for monitoring connection strength of coal mining machine body |
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| CN202211738954.3A CN116147696B (en) | 2022-12-31 | 2022-12-31 | Device and method for monitoring connection strength of coal mining machine body |
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| CN116147696B true CN116147696B (en) | 2023-10-13 |
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| 采煤机长螺杆断裂故障分析;张晓永;;煤矿机械;41(09);第165-166页 * |
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