Square hole tensioning detection device for roller of coal mining machine

Abstract

The utility model discloses a coal mining machine roller square hole tensioning detection device, and relates to the field of detection. The utility model solves the problem that the existing coal mining machine roller clamp cannot detect whether the tensioning block is actually in strict contact with the square hole of the roller. According to the utility model, a roller square hole tensioning detection device is arranged on the same side of each of two inner support tensioning devices which are oppositely arranged on a coal cutter roller clamp and is used for detecting whether a roller square hole of the coal cutter is tensioned by a roller body tensioning block or not; wherein each roller square hole tensioning detection device comprises an inner support detection sensor mounting seat and an inner support detection sensor, and the inner support detection sensor mounting seat is obliquely mounted on the outer side surface of the mounting plate on the left side or the right side of each pressing device; the inclination angle of the inner support detection sensor mounting seat is perpendicular to the hole edge of the square hole of the roller of the coal mining machine, and the inner support detection sensor is mounted on the inner support detection sensor mounting seat. The device is used for detecting whether the roller of the coal mining machine is tensioned or not.

Description

TECHNICAL FIELD

[0001] The utility model relates to detection field, concretely relates to a kind of coal winning machine drum square hole tension detection device, for the tension in place detection when clamp clamps coal winning machine drum, to realize the automation of clamp clamping coal winning machine drum. BACKGROUND

[0002] When coal winning machine drum clamp clamps coal winning machine drum, four tension blocks are synchronously pushed out, so that the two right-angle edges of tension block are tensioned workpiece, the center of clamp is coincident with the center of coal winning machine drum square hole, and positioning of circumferential position is realized simultaneously.But because tension block is stopped by delay and push tight force to control, system cannot detect whether tension block is actually and strictly contacted with drum square hole, which easily leads to the misjudgment of system, and then the situation that tension block is not tensioned in place occurs, so that the danger that coal winning machine drum falls from clamp is generated, and the stability and safety of coal winning machine drum clamp are influenced.

[0003] In summary, the existing coal winning machine drum clamp has the problem that whether tension block is actually and strictly contacted with drum square hole cannot be detected. CONTENT OF UTILITY MODEL

[0004] The utility model aims at solving the problem that the existing coal winning machine drum clamp cannot detect whether tension block is actually and strictly contacted with drum square hole, and further provides a kind of coal winning machine drum square hole tension detection device.

[0005] The technical scheme of the utility model is:

[0006] The utility model provides a kind of coal winning machine drum square hole tension detection device, including coal winning machine drum clamp, it further includes two drum square hole tension detection device, wherein, coal winning machine drum clamp includes clamp base, power system, driving bevel gear, multiple inner support tensioning device and multiple pressing device, clamp base is cylindrical base, power system is inlayed in the lower part in clamp base, the rotary power output end of power system is connected with driving bevel gear, multiple inner support tensioning device is uniformly distributed in circumferential direction and is engaged with driving bevel gear simultaneously, driving bevel gear drives multiple inner support tensioning device to move to outside simultaneously until drum is tensioned, the energy output side of the pressing device is pressed at the tensioning piece of inner support tensioning device, and continuously provides the force of outer tension for tensioning piece, to realize the continuous tensioning of drum further;Two inner support tensioning devices are oppositely arranged on coal winning machine drum clamp, and the same side of two inner support tensioning devices is placed a drum square hole tension detection device for detecting whether drum body tensioning block has tensioned coal winning machine drum square hole;Wherein, each drum square hole tension detection device includes inner support detection sensor mounting seat and inner support detection sensor, inner support detection sensor mounting seat is obliquely installed on the outer side of mounting plate at the left side or right side of each pressing device, and the oblique angle of inner support detection sensor mounting seat is perpendicular to the hole edge of coal winning machine drum square hole, and inner support detection sensor is installed on inner support detection sensor mounting seat.

[0007] Further, a plurality of long strip-shaped holes are formed on the outer circumferential side wall of the clamp base.

[0008] Further, each inner support tensioning device includes a driven end bevel gear, a lead screw, a lead screw nut, a lead screw nut seat, two end support assemblies, and a tensioning piece. The lead screw is installed on the upper end of the clamp base through the two end support assemblies. The driven end bevel gear is installed on one end of the lead screw through a key. The driven end bevel gear is engaged with the driving bevel gear. The lead screw nut is installed on the lead screw. The lead screw nut seat is installed on the lead screw nut. The tensioning piece is installed on the lead screw nut seat. The tensioning piece moves horizontally with the movement of the lead screw nut and the lead screw nut seat installed on the lead screw.

[0009] Further, the two end support assemblies include two tapered roller bearings, two bearing seats, and bearing end covers. The two bearing seats are installed in parallel on the upper end surface of the clamp base. One tapered roller bearing is inlaid in each bearing seat. The shaft holes between the two ends of the lead screw and the two tapered roller bearings are fitted. The bearing end covers are installed at the ends of the lead screw and the bearing seats.

[0010] Still further, the tensioning piece includes a tensioning seat and a drum body tensioning block. The tensioning seat is installed on the lead screw nut seat. The drum body tensioning block is installed on the tensioning seat.

[0011] Preferably, each pressing device comprises a pressing driving element, a pressing driving element connecting block, a transmission pin shaft, a rotating pin shaft and a cylinder pressing arm, the pressing driving element is installed on the tensioning seat, the pressing driving element connecting block is vertically installed on the pressing driving element, the transmission pin shaft is horizontally inserted on the pressing driving element connecting block, one end of the cylinder pressing arm is rotatably installed on the transmission pin shaft, the rotating pin shaft is rotatably inserted in the middle of the cylinder pressing arm, and the other end of the cylinder pressing arm is lowered around the rotating pin shaft and abuts against the cylinder tensioning block when the pressing driving element is extended.

[0012] Further, the pressing device further comprises a clamp upper plate and a wear-resistant sheet, the clamp upper plate is installed on the lower end of the cylinder tensioning block, and the wear-resistant sheet is installed on the lower end of the tensioning seat.

[0013] Further, the power system is a hydraulic motor or an electric motor.

[0014] Compared with the prior art, the utility model has the following effects:

[0015] 1. The utility model is used for detecting whether the tensioning block is tensioned in place when the clamp clamps the coal mining machine drum, thereby improving the stability and safety of the clamp clamping the coal mining machine drum and realizing automation.

[0016] 2. The utility model realizes the tensioning of the coal mining machine drum through the coal mining machine drum clamp, sets up a drum square hole tensioning detection device J on the basis of tensioning, each inner support detection sensor of the drum square hole tensioning detection device J respectively senses two adjacent sides of the square hole, when the tensioning block approaches the square hole side, the sensor sends a signal to the system, when both sensors have signals, it indicates that the clamp tensioning block has tensioned the drum square hole, and the drum center and the clamp center are completely coincident; if there is no signal of the sensor, it indicates that it is not in place, and the system alarms. Meanwhile, the system can also judge the circumferential error of the drum according to the on-off signal state, that is, one sensor produces a signal, and the other does not produce a signal, which indicates that the tensioning block without the signal does not contact the contact surface of the drum square hole, then the clamp can be rotated by 0.5°, and tensioned again, and several times of repetition realize full tensioning, thereby realizing the circumferential positioning of the drum. The state detection of the clamp inner support tensioning is realized, the circumferential positioning accuracy of the workpiece is ensured, the stability and safety of the coal mining machine drum clamp clamping the drum are improved, and automation is realized. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is the overall structure schematic diagram of the utility model;

[0018] Figure 2 It is Figure 1 the top view of

[0019] Figure 3 It is Figure 1 the local enlarged view of L;

[0020] Figure 4 is the overall structure schematic diagram when the utility model cooperates with the cylinder;

[0021] Figure 5 is Figure 4 the sectional view along A-A;

[0022] Figure 6 is Figure 5 the top view of

[0023] Figure 7 is Figure 5 the three-dimensional structure schematic diagram of

[0024] In the figure: 1, clamp base, 1-1, long strip hole, 2, power source, 3, driving bevel gear, 4, driven end bevel gear, 5, screw rod, 6, screw nut, 7, screw nut seat, 8, tensioning seat, 9, cylinder tensioning block, 10, compression driving part, 11, compression driving part connecting block, 12, transmission pin shaft, 13, rotating pin shaft, 14, cylinder compression arm, 15, clamp upper plate, 16, wear-resistant sheet, 17, bearing end cover, 18, tapered roller bearing, 19, bearing seat, 20, power source mounting plate, 21, inner support detection sensor mounting seat, 22, inner support detection sensor, 23, roller, 24, mounting plate. DETAILED DESCRIPTION

[0025] Specific implementation one: combine Figure 1 to Figure 7 This embodiment is described, and the embodiment includes a coal winning machine roller clamp, which further includes two roller square hole tensioning detection devices J,

[0026] The coal winning machine roller clamp includes a clamp base 1, a power system, a driving bevel gear 3, a plurality of inner support tensioning devices and a plurality of compression devices, the clamp base 1 is a cylindrical base, the power system is embedded in the lower part of the clamp base 1, the rotary power output end of the power system is connected with the driving bevel gear 3, the plurality of inner support tensioning devices are uniformly distributed in the circumferential direction and simultaneously meshed with the driving bevel gear 3, the driving bevel gear 3 drives the plurality of inner support tensioning devices to simultaneously move outward until the roller 23 is tensioned, the energy output side of the compression device is pressed at the tensioning part of the inner support tensioning device, and continuously provides the tensioning part with the outward tensioning force, thereby realizing the continuous tensioning of the roller 23;

[0027] Two roller square hole expansion detection devices J are respectively arranged on the same side of the two inner support expansion devices arranged oppositely on the drum clamp of the coal mining machine, and are used for detecting whether the drum expansion block 9 has expanded the square hole K of the drum of the coal mining machine; wherein each roller square hole expansion detection device J comprises an inner support detection sensor mounting seat 21 and an inner support detection sensor 22, the inner support detection sensor mounting seat 21 is obliquely mounted on the outer side of the mounting plate 24 located on the left side or the right side of each compression device, and the oblique angle of the inner support detection sensor mounting seat 21 is perpendicular to the hole edge of the square hole of the drum of the coal mining machine, and the inner support detection sensor 22 is mounted on the inner support detection sensor mounting seat 21;

[0028] Each inner support detection sensor respectively senses two adjacent edges of the square hole, when the expansion block approaches the edge of the square hole, the sensor sends a signal to the system, when both sensors have signals, it indicates that the clamp expansion block has expanded the drum square hole, and the center of the drum is completely coincided with the center of the clamp; if there is no signal, it indicates that it is not in place, and the system alarms. At the same time, the system can also judge the circumferential error of the drum according to the switch signal state, that is, one sensor produces a signal and the other does not produce a signal, which indicates that the expansion block without signal does not contact the contact surface of the drum square hole, and then the clamp can be rotated by 0.5°, and then expanded, and several times of repetition can realize full expansion, so as to realize the circumferential positioning of the drum.

[0029] The four driven end bevel gears of the embodiment are respectively connected with four lead screws, the lead screw nut bases are respectively connected with the four lead screws to convert the rotary motion of the lead screws into the linear motion of the four expansion bases. The compression driving members are respectively fixed on the four expansion bases, and the piston rods of the compression driving members are in the initial state of retraction. The drum expansion blocks are respectively fixed on the side faces of the four expansion bases. The compression driving connecting blocks are respectively fixed on the free ends of the four compression driving piston rods, and are respectively connected with the four drum expansion blocks through transmission pin shafts. The rotating pin shafts provide rotating fulcrums for the four drum expansion blocks. The clamp upper plate is installed on the clamp base. The wear-resistant sheets are respectively fixed on the bottoms of the four expansion bases, so that the expansion bases are separated from the clamp base.

[0030] Specific implementation method two: combining Figure 1 , Figure 4 , Figure 5 and Figure 7 to illustrate the embodiment, a plurality of long strip-shaped holes 1-1 are formed on the outer circumferential side wall of the clamp base 1 of the embodiment.

[0031] In this way, the weight of the entire positioning clamp can be reduced, and the running condition inside the clamp base 1 can be observed in time. The other components and connection relationships are the same as those of the specific implementation method one.

[0032] Specific implementation method three: combining Figure 5The embodiment is described, each inner support tensioning device of the embodiment comprises a driven end bevel gear 4, a lead screw 5, a lead screw nut 6, a lead screw nut seat 7, two end support assemblies and a tensioning piece,

[0033] The lead screw 5 is installed at the upper end of the clamp base 1 through the two end support assemblies, the driven end bevel gear 4 is installed at one end of the lead screw 5 through a key, and the driven end bevel gear 4 is engaged with the driving bevel gear 3, the lead screw nut 6 is installed on the lead screw 5, the lead screw nut seat 7 is installed on the lead screw nut 6, and the tensioning piece is installed on the lead screw nut seat 7, and the horizontal movement of the tensioning piece is realized with the movement of the lead screw nut 6 and the lead screw nut seat 7 installed on the lead screw 5.

[0034] In this way, the driving end bevel gear 3 is engaged with the four driven end bevel gears 4 at the same time, thereby driving the four lead screws 6 to rotate at the same time, thereby driving the tensioning seat 8 to move forward and backward at the same time, so as to quickly and accurately realize the tensioning of the cylinder. The other components and connection relationships are the same as those in the first or second embodiment.

[0035] The fourth embodiment is combined with Figure 5 The embodiment is described, the two end support assemblies of the embodiment comprise two tapered roller bearings 18, two bearing seats 19 and bearing end covers 17, the two bearing seats 19 are installed in parallel on the upper end surface of the clamp base 1, each bearing seat 19 is embedded with a tapered roller bearing 18, the two ends of the lead screw 5 are matched with the shaft holes between the two tapered roller bearings 18, and the bearing end cover 17 is installed at the end of the lead screw 5 and the bearing seat 19.

[0036] In this way, the smooth rotation of the two ends of the lead screw 5 is facilitated. The other components and connection relationships are the same as those in any one of the first to third embodiments.

[0037] The fifth embodiment is combined with Figure 5 The embodiment is described, the tensioning piece of the embodiment comprises a tensioning seat 8 and a cylinder tensioning block 9, the tensioning seat 8 is installed on the lead screw nut seat 7, and the cylinder tensioning block 9 is installed on the tensioning seat 8. In this way, the cylinder tensioning block 9 directly contacts the inner side wall of the cylinder to realize the tensioning of the cylinder. The other components and connection relationships are the same as those in any one of the first to fourth embodiments.

[0038] The sixth embodiment is combined with Figure 5 The embodiment is described, each pressing device of the embodiment comprises a pressing driving piece 10, a pressing driving piece connecting block 11, a transmission pin shaft 12, a rotating pin shaft 13 and a cylinder pressing arm 14,

[0039] The pressing driving member 10 is installed on the tensioning seat 8, the pressing driving member connecting block 11 is vertically installed on the pressing driving member 10, the transmission pin shaft 12 is horizontally inserted on the pressing driving member connecting block 11, one end of the cylinder pressing arm 14 is rotatably installed on the transmission pin shaft 12, the rotating pin shaft 13 is rotatably inserted in the middle of the cylinder pressing arm 14, one end of the cylinder pressing arm 14 is lifted when the pressing driving member 10 is extended, and the other end of the cylinder pressing arm 14 is lowered around the rotating pin shaft 13 and abuts against the cylinder tensioning block 9. In this way, the contact area with the inner side wall of the cylinder is large, and the supporting effect is guaranteed. The other components and connection relationships are the same as any one of the first to fifth embodiments.

[0040] Embodiment seven: Figure 5 In this embodiment, the pressing device further comprises a clamp upper plate 15 and a wear-resistant sheet 16. The clamp upper plate 15 is installed at the lower end of the cylinder tensioning block 9, and the wear-resistant sheet 16 is installed at the lower end of the tensioning seat 8.

[0041] In this way, the smooth operation of the entire tensioning member is guaranteed. The other components and connection relationships are the same as any one of the first to sixth embodiments.

[0042] Embodiment eight: Figure 1 In this embodiment, the power system is a hydraulic motor or an electric motor. The other components and connection relationships are the same as any one of the first to seventh embodiments.

[0043] Combination Figure 1 to Figure 7 The working principle of the utility model is explained as follows:

[0044] The utility model discloses a coal cutter drum clamp, it includes inside support tensioning detection sensor support, inside support detection sensor, and the coal cutter drum clamp includes clamp base, power system, inside support tensioning device, pressing device. Clamp base is installed on the rotary table of the positioner, and the center of clamp base is coaxial with the rotary center of the rotary table. The power system is fixed in the inside of clamp base, and the driving end bevel gear is connected on the power source output shaft and is engaged with four driven end bevel gears respectively. Four driven end bevel gears are linked with four lead screws respectively, and the nut seat of lead screw is converted into the linear motion of four tensioning seats through four lead screw nuts.

[0045] The pressing drives are respectively fixed on the four tensioning seats, and the initial state of the pressing drive piston rods is retracted. The cylinder tensioning blocks are respectively fixed on the side surfaces of the four tensioning seats. The connecting blocks are respectively fixed on the free ends of the four pressing drive piston rods, and are connected with the four cylinder tensioning blocks through transmission pin shafts. The rotating pin shafts provide rotating fulcrums for the four cylinder tensioning blocks. The jig upper plate is installed on the jig base. The inner supporting tensioning detection device is installed on the same side of the two tensioning blocks, and each sensor respectively senses the adjacent two sides of the drum square hole.

[0046] The driving end bevel gear is engaged with the four driven end bevel gears at the same time, so as to drive the four lead screws to rotate at the same time, so as to drive the tensioning seats to move forward and backward at the same time.

[0047] The above examples are only used to illustrate the technical solutions of the present application, and are not limited thereto; although the present application has been described in detail with reference to the foregoing examples, those skilled in the art should understand that the technical solutions recorded in the foregoing examples can still be modified, or some technical features can be replaced by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A shearer drum square hole tension detection device, comprising a shearer drum clamp, characterized in that: It also includes two drum square hole expansion detection devices (J), The coal winning machine drum clamp comprises a clamp base (1), a power system, a driving bevel gear (3), a plurality of inner support expansion devices and a plurality of pressing devices, the clamp base (1) is a cylindrical base, the power system is embedded in the lower part of the clamp base (1), the rotary power output end of the power system is connected with the driving bevel gear (3), the plurality of inner support expansion devices are uniformly distributed in the circumferential direction and simultaneously meshed with the driving bevel gear (3), the driving bevel gear (3) drives the plurality of inner support expansion devices to simultaneously move outward until the drum (23) is expanded, the energy output side of the pressing device is pressed at the expansion part of the inner support expansion device and continuously provides the expansion force for the expansion part, thereby realizing the continuous expansion of the drum (23); Two inner support expansion devices arranged oppositely on the coal winning machine drum clamp are provided with a drum square hole expansion detection device (J) on the same side for detecting whether the drum body expansion block (9) has expanded the coal winning machine drum square hole (K). Each drum square hole expansion detection device (J) comprises an inner support detection sensor mounting seat (21) and an inner support detection sensor (22), the inner support detection sensor mounting seat (21) is obliquely mounted on the outer side of the mounting plate (24) on the left side or the right side of each pressing device, and the oblique angle of the inner support detection sensor mounting seat (21) is perpendicular to the hole edge of the coal winning machine drum square hole, and the inner support detection sensor (22) is mounted on the inner support detection sensor mounting seat (21).

2. The drum square hole tension detection device of a coal winning machine according to claim 1, characterized in that: A plurality of long strip-shaped holes (1-1) are formed on the outer circumferential side wall of the clamp base (1).

3. A sheave detection device for a sheave of a coal mining machine according to claim 2, characterized in that: Each inner support expansion device comprises a driven end bevel gear (4), a lead screw (5), a lead screw nut (6), a lead screw nut seat (7), two end support assemblies and an expansion part, The lead screw (5) is mounted on the upper end of the clamp base (1) through the two end support assemblies, the driven end bevel gear (4) is mounted on one end of the lead screw (5) through a key, and the driven end bevel gear (4) is meshed with the driving bevel gear (3), the lead screw nut (6) is mounted on the lead screw (5), the lead screw nut seat (7) is mounted on the lead screw nut (6), and the expansion part is mounted on the lead screw nut seat (7), and the horizontal movement of the expansion part is realized by the movement of the lead screw nut (6) and the lead screw nut seat (7) mounted on the lead screw (5).

4. A sheave detection device for a sheave of a coal mining machine according to claim 3, characterized in that: The two end support assemblies comprise two tapered roller bearings (18), two bearing seats (19) and bearing end covers (17), the two bearing seats (19) are parallelly mounted on the upper end surface of the clamp base (1), one tapered roller bearing (18) is embedded in each bearing seat (19), the shaft holes between the two ends of the lead screw (5) and the two tapered roller bearings (18) are matched, and the bearing end covers (17) are mounted on the ends of the lead screw (5) and the bearing seats (19).

5. A sheave detection device for a sheave of a coal cutter drum according to claim 4, characterised in that: The expansion part comprises an expansion seat (8) and a drum body expansion block (9), the expansion seat (8) is mounted on the lead screw nut seat (7), and the drum body expansion block (9) is mounted on the expansion seat (8).

6. A sheave detection device for a sheave of a coal cutter drum according to claim 5, characterised in that: Each pressing device comprises a pressing driving element (10), a pressing driving element connecting block (11), a transmission pin shaft (12), a rotating pin shaft (13) and a cylinder body pressing arm (14), The pressing driving element (10) is installed on the expansion seat (8), the pressing driving element connecting block (11) is vertically installed on the pressing driving element (10), the transmission pin shaft (12) is horizontally inserted on the pressing driving element connecting block (11), one end of the cylinder body pressing arm (14) is rotatably installed on the transmission pin shaft (12), the rotating pin shaft (13) is rotatably inserted in the middle of the cylinder body pressing arm (14), one end of the cylinder body pressing arm (14) is raised when the pressing driving element (10) is extended, and the other end of the cylinder body pressing arm (14) is lowered around the rotating pin shaft (13) and abuts against the cylinder body expansion block (9).

7. A sheave detection device for a sheave of a coal cutter drum according to claim 6, characterised in that: The pressing device further comprises a clamp upper plate (15) and a wear-resistant sheet (16), the clamp upper plate (15) is installed on the lower end of the cylinder body expansion block (9), and the wear-resistant sheet (16) is installed on the lower end of the expansion seat (8).

8. A sheave detection device for a sheave of a coal cutter drum according to claim 7, characterised in that: The power system is a hydraulic motor or an electric motor.

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