Belt deviation rectifying device and TBM main machine belt conveyor

Abstract

The invention discloses a belt deviation correcting device and a TBM main machine belt conveyor. The problems that in the prior art, a main machine belt conveyor is single in deviation mode and insufficient in deviation correcting force are solved. The belt deviation rectifying device comprises a carrier roller assembly, a supporting frame and a deviation rectifying mechanism. The deviation rectifying mechanism and the carrier roller assembly are arranged on the supporting frame. The deviation rectifying mechanism comprises a deflection angle adjusting assembly and an eccentricity adjusting assembly. The eccentric adjusting assembly comprises a rotating shaft connected with the side carrier rollers, and a telescopic aligning carrier roller is arranged between the rotating shaft and the supporting frame. The telescopic aligning carrier rollers are connected with a longitudinal driving mechanism arranged on the supporting frame; the deflection angle adjusting assembly comprises an adjusting rod, one end of the adjusting rod is hinged to the rotating shaft, and the other end is connected with the transverse driving mechanism. Belt deviation is rectified through centripetal force generated by the telescopic self-aligning carrier roller and lateral force reduced by increasing the groove angle, the deviation rectifying force is large, meanwhile, friction of the blocking roller to the edge of the belt can be reduced, and the service life of the belt is prolonged.

Description

Technical Field

[0001] The invention relates to the technical field of belt conveyors, in particular to a belt deviation correcting device. Background Art

[0002] The main machine belt conveyor system is a key component in the construction process of a full-face rock tunnel boring machine (TBM) and is located inside the TBM main beam. During the TBM excavation process, the belt conveyor system transports the slag from the main machine to the supporting system. However, in actual operation, the main machine belt conveyor may deviate from the belt, causing the slag to fall from the edge of the belt. Since the space inside the TBM main beam is extremely limited, it is very difficult to clean up the slag that falls on the bottom of the main beam.

[0003] The groove-type centering and correcting device belongs to the mechanical transmission type correcting device, which has the advantages of low cost, simple structure, easy maintenance, strong adaptability, etc. Therefore, the groove-type centering and correcting device is selected as the prototype of the belt correcting device. The existing groove-type centering and correcting mechanism is a multifunctional belt correcting roller disclosed in the Chinese patent with announcement number: CN 221853101 U; when transporting heavy objects, when the conveyor belt deviates, the larger load on the deviated side will cause the rotating shaft to be stuck and the rotation will not be smooth, thus affecting the correction effect. At the same time, when the load is large, the crossbeam will deform and the roller will be separated from the upper crossbeam, resulting in the failure of the correction; the above correction method is single and the correction effect is poor, and the TBM main machine belt conveyor has these two phenomena due to its special working environment, resulting in insufficient correction force. Therefore, the traditional groove-type centering mechanism is not suitable for the TBM main machine belt conveyor. Summary of the invention

[0004] In view of the deficiencies in the above-mentioned background technology, the present invention proposes a belt deviation correction device and a TBM main machine belt conveyor, which solves the problems of single deviation mode and insufficient deviation correction force of the main machine belt conveyor in the prior art.

[0005] The technical solution of the present invention is achieved as follows: a belt deviation correction device includes a roller assembly, a support frame and a deviation correction mechanism, the deviation correction mechanism and the roller assembly are arranged on the support frame; the roller assembly includes a lower roller and a side roller hinged to the support frame; the deviation correction mechanism includes an angle adjustment assembly and an eccentricity adjustment assembly; the eccentricity adjustment assembly includes a rotating shaft connected to the side roller, and a telescopic self-aligning roller is provided between the rotating shaft and the support frame; the telescopic self-aligning roller is connected to a longitudinal driving mechanism arranged on the support frame; the angle adjustment assembly includes an adjusting rod, one end of the adjusting rod is hinged to the rotating shaft, and the other end is connected to a transverse driving mechanism arranged on the support frame.

[0006] Further preferably, the support frame includes a lower frame arranged laterally and an upper frame arranged longitudinally, the upper frame is located on the lower frame, the transverse driving mechanism is arranged on the lower frame, the longitudinal driving mechanism is arranged on the upper frame, and the transverse driving mechanism and the longitudinal driving mechanism form a linkage driving structure through a selective locking mechanism; the linkage driving structure is a transmission linkage between the transverse driving mechanism and the longitudinal driving mechanism.

[0007] Further preferably, the transverse drive mechanism includes a transverse slide groove arranged on the lower frame, a transverse sliding rack symmetrically arranged in the transverse slide groove is provided in the transverse slide groove, the transverse sliding rack is meshed with two transmission gears arranged in the transverse slide groove, the transmission gear is connected to a synchronously rotating intermediate gear through a gear connecting sleeve, a main gear is provided between the two intermediate gears and the two intermediate gears are meshed with the main gear, and the main gear is connected to a motor transmission arranged on one side of the upper frame for power transmission.

[0008] Further preferably, the transverse sliding rack is limited in the transverse sliding groove by a baffle, and an adjusting slider is provided at the end of the transverse sliding rack, the adjusting rod is a Y-shaped frame, the single rod end of the Y-shaped frame is hinged to the adjusting slider, and the double rod end of the Y-shaped frame is hinged to the rotating shaft; the main gear is connected to the motor through a worm gear, and the intermediate gear and the main gear are both located in the upper frame.

[0009] Further preferably, the longitudinal drive mechanism includes a left screw mechanism and a right screw mechanism arranged in the upper frame, and the left screw mechanism and the right screw mechanism both include a screw bracket arranged in the upper frame, a longitudinal screw is provided on the screw bracket, a screw slider with threaded cooperation is provided on the longitudinal screw, a T-shaped limit groove slidingly cooperated with the screw bracket is provided on the screw slider, the lower part of the telescopic self-aligning roller is hinged to the screw slider, and a connecting bevel gear is provided at the end of the longitudinal screw facing the lower frame, the connecting bevel gear is meshed with the active bevel gear arranged in the upper frame, and a driven wheel that rotates synchronously is provided at the bottom of the active bevel gear, and the driven wheel of the left screw mechanism and the driven wheel of the right screw mechanism are selectively transmitted and connected with the selective locking mechanism.

[0010] Further preferably, the selective locking mechanism includes a limit gear symmetrically arranged on the same side of the upper frame, the two limit gears are connected by a limit rod, the limit rod is rotatably connected to the first positioning shaft, the first positioning shaft is eccentrically arranged on the main gear, the bottom of the gear shaft of the limit gear is slidably limited in the limit shaft slide groove, the limit shaft slide groove is opened on the bottom cover plate of the upper frame, and the self-locking disk is symmetrically arranged on the bottom cover plate, the gear shaft of the limit gear is inserted into the first self-locking groove of the self-locking disk, and the other two second self-locking grooves of the self-locking disk are respectively arranged corresponding to the two trigger-type locking rod assemblies arranged on the left and right sides of the upper frame.

[0011] Further preferably, the trigger-type locking rod assembly includes an L-shaped self-locking rod arranged in the upper frame and along the longitudinal direction, a limit block is provided on the inner wall of the upper frame and contacts and cooperates with the L-shaped self-locking rod, the vertical beam portion of the L-shaped self-locking rod is arranged corresponding to the reset assembly arranged in the upper frame, and the cross beam end of the L-shaped self-locking rod corresponds to the self-locking disk; when the cross beam end of the L-shaped self-locking rod is inserted into the second self-locking groove of the self-locking disk, the self-locking disk is locked.

[0012] Further preferably, the reset assembly includes a spring support seat arranged at the inner end of the upper frame, a spring limiting shaft is provided on the side of the spring support seat facing the L-shaped self-locking rod, the spring limiting shaft cooperates with the limiting hole arranged on the vertical beam end of the L-shaped self-locking rod, and a first spring is sleeved on the spring limiting shaft; a limiting block is provided on the lead screw slider corresponding to the vertical beam portion of the L-shaped self-locking rod, and the limiting block can limit the movement of the L-shaped self-locking rod through the vertical beam portion of the L-shaped self-locking rod.

[0013] Further preferably, the telescopic self-aligning roller includes a self-aligning roller, one end of which is connected to the screw slider through a universal joint, and the other end is connected to a telescopic slider seat arranged on the rotating shaft through a universal joint; a correction roller is provided on the telescopic slider seat; and it is used to block the side of the belt.

[0014] Further preferably, the telescopic slider seat includes a support, connecting sleeves matching the rotating shaft are provided on both sides of the support, a telescopic slider is slidably provided in the support, the telescopic slider is connected to the self-aligning roller through a universal joint, a roller stop bracket is provided on the support, a top slide groove is provided on the top of the roller stop bracket, a lower slide groove is provided on the top of the support, the upper and lower ends of the deviation correction roller are respectively slidably arranged in the top slide groove and the lower slide groove through the roller stop slider, and a spring rod is provided on the side of the roller stop slider facing the roller stop bracket, and a second spring is sleeved on the spring rod.

[0015] Further preferably, the lower roller is arranged on the upper frame through the lower roller support seat, the side roller is hinged to the upper frame through the side roller support seat, the side roller support seat is connected to the rotating shaft through the shaft kit, the shaft kit is provided with an inclination sensor and a deflection arm, the deflection arm is hinged with a deflection measuring rod, and the deflection measuring rod is vertically arranged.

[0016] A TBM main machine belt conveyor comprises the belt deviation correcting device, and the belt deviation correcting device matches the main machine belt arranged on the TBM.

[0017] The beneficial effects of the present invention are as follows: the present invention can simultaneously achieve synchronous adjustment of the groove angle and the center of gravity of the belt through the cooperation of the angle adjustment component and the eccentricity adjustment group of the correction mechanism, and synchronous adjustment of multiple angles, thereby changing the problem of the single deviation mode of the traditional main machine belt conveyor and improving the correction efficiency. In addition, the centripetal force generated by the telescopic self-aligning roller and the reduction of the lateral force by increasing the groove angle are used to correct the belt deviation. The correction force is large, and the compatibility with the TBM main machine is higher. At the same time, the friction of the retaining roller on the belt edge can be reduced, and the service life of the belt can be extended.

[0018] The lateral drive mechanism and the longitudinal drive mechanism of the present invention form a linkage drive structure through a selective locking mechanism; the selective locking mechanism selects the power transmission direction of the lateral drive mechanism between the longitudinal transmission mechanism to achieve synchronous and stable adjustment of the angle adjustment component and the eccentricity adjustment component, thereby improving the timeliness and efficiency of the deviation correction. While the selective locking mechanism improves the stability of the power transmission, it ensures the synchronization of the actions of the lead screw mechanisms on both sides, so that the deviation correction on both sides is carried out synchronously, further improving the deviation correction efficiency.

[0019] The belt deviation correction device of the present invention has an ingenious structural design. It combines an inclination sensor and a deviation measuring rod to realize intelligent and precise deviation correction. It has a high degree of compatibility with the TBM main machine and is used to timely correct the deviation of the TBM main machine belt. It provides a new deviation correction mechanism for the TBM main machine belt conveyor, improves the conveying efficiency of the TBM main machine belt conveyor, and further improves the construction efficiency of the TBM. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present invention, the accompanying drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings in the following description are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying any creative work.

[0021] Figure 1 It is a schematic diagram of the overall structure of the belt deviation correcting device of the present invention; Figure 2 It is a schematic diagram of the structure of the transverse driving mechanism and the longitudinal driving mechanism of the present invention; Figure 3 It is a schematic diagram of the structure of the roller assembly of the present invention; Figure 4 This is a schematic diagram of the structure of the eccentric adjustment assembly of the present invention; Figure 5 This is a schematic diagram of the internal structure of the transverse slide groove of the lower frame of the present invention; Figure 6 It is a rear view schematic diagram of the arrangement state of the self-locking disk of the present invention; Figure 7 This is a schematic diagram of the internal structure of the upper frame of the present invention; Figure 8 is a cross-sectional view of the selective locking mechanism of the present invention; Fig. 9 It is a cross-sectional view of the matching state of the reset assembly and the L-shaped self-locking rod of the present invention; Fig.10 It is a cross-sectional view of the telescopic slider seat of the present invention; Fig.11 It is a schematic diagram of the support structure of the telescopic sliding block seat of the present invention; Fig.12 It is a schematic front view of the arrangement state of the self-locking disk of the present invention; Fig.13 Implementation principle diagram for increasing the groove angle and thus improving the correction force; Fig.14 The invention discloses the implementation principle of adjusting the angle of the self-aligning roller to achieve the deviation correction effect. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0023] like Figure 1 As shown in Example 1, a belt deviation correction device includes a roller assembly 200. The roller assembly 200 is located under the belt and is used to support the belt and the transported materials. The belt deviation correction device also includes a support frame 100 and a deviation correction mechanism 300. The support frame 100 is the support structure of the entire deviation correction device, and the deviation correction mechanism 300 is the main deviation correction structure, which cooperates with the roller assembly 200 to correct the deviation of the belt on the roller assembly. The deviation correction mechanism 300 and the roller assembly 200 are arranged on the support frame 100. Figure 3 As shown, the roller assembly 200 includes a lower roller 22 and side rollers 23 hinged to the support frame 100; the side rollers are located at both ends of the lower roller to form a U-shaped roller combination to stably support the belt; the U-shaped roller combination structure is the same as the existing roller structure and will not be repeated here.

[0024] The deviation correction mechanism 300 described in this embodiment includes an angle adjustment component 3-1 and an eccentricity adjustment component 3-2; the angle adjustment component 3-1 is used to adjust the inclination angle of the side roller; the eccentricity adjustment component is used to adjust the center of gravity of the belt. The eccentricity adjustment component 3-2 includes a rotating shaft 21 connected to the side roller 23, the rotating shaft 21 is connected to the upper part of the side roller, and the inclination angle of the side roller is adjusted by the rotating shaft; a telescopic self-aligning roller is provided between the rotating shaft 21 and the support frame 100, and the telescopic self-aligning roller is in contact with the belt, and the center of gravity of the belt is adjusted by adjusting its telescopic and inclination angle. The telescopic self-aligning roller is connected to the longitudinal drive mechanism provided on the support frame 100, and the longitudinal drive mechanism adjusts the position of the lower end of the telescopic self-aligning roller in the longitudinal direction of the support frame to adjust its inclination angle in the inclined plane. The angle adjustment assembly 3-1 includes an adjustment rod 24, one end of which is hinged to the rotating shaft 21, and the other end is connected to a transverse driving mechanism arranged on the supporting frame; the transverse driving mechanism adjusts the position of the lower end of the adjustment rod 24 in the transverse direction of the supporting frame, and adjusts the inclination angle of the side roller in the vertical plane through the rotating shaft 21.

[0025] like Figure 2 As shown, the support frame 100 described in this embodiment includes a lower frame 1 arranged horizontally and an upper frame 2 arranged vertically. The upper frame 2 is located on the lower frame 1, and the upper frame is fixedly installed on the top of the lower frame by bolts. In this embodiment, two longitudinal frames are arranged on the lower frame, and the two longitudinal frames are connected to form an I-shaped structure through a U-shaped frame, and the two longitudinal frames correspond to the two side rollers respectively. The front and rear ends of the lower frame are provided with symmetrically distributed ears 1-11, and bolt holes are provided on the ears. The ears are connected to the two upper frames through four ears to make the connection more stable. The transverse driving mechanism is arranged on the lower frame 1 to drive its actuator to move horizontally; the longitudinal driving mechanism is arranged on the upper frame 2 to drive its actuator to move longitudinally. The transverse driving mechanism and the longitudinal driving mechanism form a linkage driving structure through a selective locking mechanism; the linkage driving structure is that the transverse driving mechanism and the longitudinal driving mechanism have a transmission linkage. The selective locking mechanism selects the power transmission direction of the transverse driving mechanism between the longitudinal transmission mechanism; so as to realize the synchronous adjustment of the deflection adjustment component 3-1 and the eccentricity adjustment component 3-2.

[0026] Embodiment 2, a belt deviation correcting device, such as Figure 2As shown, based on the embodiment 1, this embodiment is further optimized, wherein the transverse driving mechanism includes a transverse chute 1-13 arranged on the lower frame 1, and a transverse sliding rack 39 symmetrically arranged in the transverse chute 1-13 is arranged in the transverse chute 1-13, that is, two transverse sliding racks are arranged in the transverse chute, and the two transverse sliding racks correspond to the two side rollers respectively. The transverse sliding rack 39 is meshed with two transmission gears 38 arranged in the transverse chute 1-13, and the transmission gear 38 is connected to the synchronously rotating intermediate gear 7 through the gear connecting sleeve 37, and a main gear 5 is arranged between the two intermediate gears 7 and the two intermediate gears 7 are meshed with the main gear 5, and the main gear 5 is transmission-connected with the motor 16 arranged on one side of the upper frame 2. The gear connecting sleeve 37 is rotatably connected to the first positioning shaft 1-14 set in the transverse chute 1-13 of the lower frame, the intermediate gear 7 is located above the transmission gear 38 and is also set on the first positioning shaft 1-14, the intermediate gear 7 is located in the U-shaped frame of the upper frame, and the transmission gear 38 is located in the transverse chute, driving the transverse sliding rack 39 to move left and right in the transverse chute. In this embodiment, under the action of the motor, the main gear 5 drives the intermediate gear to rotate, and the rotation of the intermediate gear drives the coaxially arranged transmission gear 38 to rotate, and the transmission gear then drives the rack to move in the transverse chute to complete the power transmission, and at the same time drives the lower part of the adjustment rod to move toward the sliding rack 39, thereby realizing the rapid and stable adjustment of the inclination angle of the side roller.

[0027] like Figure 5As shown, the transverse sliding rack 39 described in this embodiment is limited in the transverse sliding groove 1-13 by the baffle 34 to ensure smooth engagement with the rack. A limiting protrusion 1-12 is provided on the side wall of the lower frame to limit the installation position of the baffle, making its installation more accurate. An adjusting slider 19 is provided at the end of the transverse sliding rack 39, and the adjusting slider 19 is connected to the rack through a pin shaft. The movement of the rack drives the adjusting slider to move in the transverse sliding groove. Preferably, the adjusting rod 24 is a Y-shaped frame, the single rod end of the Y-shaped frame is hinged to the adjusting slider 19, and the double rod end of the Y-shaped frame is hinged to the rotating shaft 21 through the shaft kit 241; through the above-mentioned structural design, the transverse driving mechanism, under the action of the motor, drives the lower part of the adjusting rod to slide in the transverse sliding groove, which is used to adjust the inclination angle of the Y-shaped frame, thereby realizing the adjustment of the inclination angle of the side roller. In this embodiment, the main gear 5 is connected to the motor 16 through the worm 17; the motor 16 adopts a servo motor and is connected to the upper frame through the motor support plate 4; of course, the main gear can also be connected to the motor by a gear. In this embodiment, the main gear is connected to the motor by a worm, and the intermediate gear 7 and the main gear 5 are both located in the upper frame 2; the main gear 5 is rotatably connected to the gear positioning shaft 211 set on the upper frame and can rotate around the shaft. A long hole groove 1-25 is provided on the front panel of the upper frame for the main gear to extend and mesh with the worm 17; the worm 17 is fixed to the front side of the upper frame through the bearing seat 1-28, and one end of the worm 17 is installed at the output end of the servo motor; the motor drives the worm to rotate and transmits power to the driving gear and the corresponding lateral sliding rack. The sliding of the adjustment slider 19 causes the angle of the Y-shaped adjustment rod to increase, and the Y-shaped adjustment rod drives the rotating shaft 21 to rotate around the hinge point of the side roller support seat 20 and the lower roller support seat 25, thereby changing the angle of the side roller support seat 20, thereby increasing the groove angle and improving the correction force.

[0028] like Figure 2As shown, the longitudinal drive mechanism described in this embodiment includes a left screw mechanism and a right screw mechanism arranged on the same side of the upper frame 2, that is, a left screw mechanism and a right screw mechanism are respectively arranged on both sides of the longitudinal frame of the upper frame, and the left screw mechanism and the right screw mechanism on the same side are selectively operated through a selective locking mechanism. The left screw mechanism and the right screw mechanism both include a screw support 14 arranged in the upper frame 2, a longitudinal screw 15 is rotatably provided on the screw support 14, a screw slider 26 with threaded engagement is provided on the longitudinal screw 15, and a T-shaped limiting groove 261 is provided on the screw slider 26 to slide with the screw support 14, so as to limit the screw slider and ensure that the screw slider can only move longitudinally. The lower part of the telescopic self-aligning roller is hinged to the screw slider 26; the movement of the screw slider drives the lower part of the telescopic self-aligning roller to move longitudinally, changing the inclination of the telescopic self-aligning roller in the plane where the side roller is located, which is used to adjust the center of gravity of the belt. In this embodiment, a connecting bevel gear 13 is provided at the end of the longitudinal screw 15 facing the lower frame 1, that is, a connecting bevel gear is provided at the opposite end of the two longitudinal screws, and the connecting bevel gear 13 is meshed with an active bevel gear 11 arranged in the upper frame 2, and the active bevel gear 11 is rotatably connected to the second positioning shaft 1-22 arranged on the upper frame through a bearing, and a synchronously rotating driven wheel 10 is provided at the bottom of the active bevel gear 11, and the driven wheel 10 is also rotatably arranged on the second positioning shaft 1-22. The active bevel gear and the driven wheel can be welded and fixed to achieve synchronous rotation of the two, and the driven wheel 10 of the left screw mechanism and the driven wheel 10 of the right screw mechanism are selectively transmission connected with the selective locking mechanism; when the selective locking mechanism is locked with the driven wheel 10 of the left screw mechanism, the left screw mechanism works; when the selective locking mechanism is locked with the driven wheel 10 of the right screw mechanism, the right screw mechanism works.

[0029] like Figure 6 , 7, as shown in Fig. 9, in this embodiment, the selective locking mechanism includes limiting gears 9 symmetrically arranged in the upper frame 2. The two limiting gears 9 respectively correspond to the four lead screw mechanisms in the two longitudinal frames, and one limiting gear corresponds to a set of left and right lead screw mechanisms. In this embodiment, the two limiting gears 9 are connected by a limiting rod 6. The through hole 61 on the limiting rod 6 is connected to the first positioning shaft 212, realizing the rotation of the limiting rod around the first positioning shaft. The first positioning shaft 212 is eccentrically arranged on the main gear 5. The bottom of the gear shaft 41 of the limiting gear 9 is slidably limited in the limiting shaft chute 1-26; an extended lead screw 412 is provided on the upper part of the gear shaft 41, and a nut 40 is provided on the extended lead screw 412 for fixing the limiting gear. A limiting ring 411 is provided on the gear shaft between the limiting gear and the limiting shaft chute for limiting the axial position of the limiting gear. The limiting shaft chute 1-26 is opened on the bottom cover plate 3 of the upper frame 2; the limiting gear 9 can move in the limiting chute under the action of the limiting rod and the main gear, and the limiting chute is an arc-shaped chute. Self-locking discs 18 are symmetrically arranged on the bottom cover plate 3. The self-locking discs are connected by self-locking positioning shafts 1-23 arranged on the upper frame, and the self-locking discs can rotate around this shaft. The gear shaft of the limiting gear 9 passes through the first self-locking groove 182 of the self-locking disc 18 to push the self-locking disc to rotate. The other two second self-locking grooves 181 of the self-locking disc 18 are respectively arranged corresponding to the two trigger-type locking rod assemblies arranged on the left and right sides of the upper frame 2. When the trigger-type locking rod assembly penetrates into the second self-locking groove, the position of the self-locking disc is locked to ensure that the limiting gear meshes and drives with the corresponding driven gear, thereby realizing the transmission of power from the driving bevel gear to the connecting bevel gear, and thus driving the lead screw mechanism to execute actions.

[0030] As Fig.12As shown, when the limit gear 9 rotates, under the action of the limit rod 6, its gear shaft 41 carries the limit gear 9 to slide into the limit shaft slot 1-26, and at the same time, the sliding of its gear shaft 41 drives the self-locking disk 18 to rotate. When sliding to the end of the limit shaft slot, the limit gear 9 is meshed with the driven wheel 10. At this time, the second self-locking groove 181 of the self-locking disk 18 rotates to face the end of the self-locking rod. The rotation of the limit gear 9 can drive the driven wheel 10 to rotate. Since the driven wheel 10 is welded to the active bevel gear 11, the rotation of the driven wheel 10 drives the active bevel gear 11 to rotate, and the active bevel gear 11 is meshed with the connecting bevel gear 13. The rotation of the active bevel gear 11 drives the connecting bevel gear 13 to rotate. A keyway is provided in the shaft hole of the connecting bevel gear 13. The connecting bevel gear 13 is connected to the lead screw through a key. The rotation of the connecting bevel gear 13 drives the lead screw to rotate, and the rotation of the lead screw can drive the lead screw slider to slide on the T-shaped boss of the lead screw bracket 14. It should be pointed out that since the device adopts two limit gears, the two limit gears are connected by a limit rod. Therefore, when the active tooth rotates, the limit gear at one end of the limit rod engages with the driven wheel 10 of the left screw mechanism on one side, and the limit gear at the other end of the limit rod engages with the driven wheel 10 of the right screw mechanism on the other side, thereby driving the two screw mechanisms to perform corresponding actions.

[0031] The trigger-type locking rod assembly described in this embodiment includes an L-shaped self-locking rod 12 disposed in the upper frame 2 and disposed in the longitudinal direction. A limit block 1-24 is disposed on the inner wall of the upper frame 2 to contact and cooperate with the L-shaped self-locking rod 12. The limit block limits the vertical freedom of the self-locking rod to ensure that it slides longitudinally at the same height. The vertical beam portion of the L-shaped self-locking rod 12 is disposed corresponding to a reset assembly disposed in the upper frame 2. The reset assembly is used to push the L-shaped self-locking rod 12 back into the self-locking groove of the self-locking disk. The cross beam end of the L-shaped self-locking rod 12 corresponds to the self-locking disk 18. Under the action of the reset assembly, the cross beam end of the L-shaped self-locking rod 12 can extend into the second self-locking groove of the self-locking disk to lock the position of the self-locking disk.

[0032] like Fig. 9As shown, the reset assembly in this embodiment includes a spring support seat 8 arranged at the inner end of the upper frame 2, the spring support seat 8 is connected to the end of the upper frame through a pin shaft 81, and a pin hole 1-27 matching with the pin shaft is opened at the end of the upper frame. A spring limiting shaft 82 is provided on the side of the spring support seat 8 facing the L-shaped self-locking rod 12, the spring limiting shaft 82 matches with the limiting hole arranged on the vertical beam end of the L-shaped self-locking rod 12, and a first spring 42 is sleeved on the spring limiting shaft 82, and the first spring is located between the spring support seat and the vertical beam portion of the L-shaped self-locking rod 12; a limiting block 262 corresponding to the vertical beam portion of the L-shaped self-locking rod 12 is provided on the lead screw slider 26, and the limiting block 262 limits the movement of the L-shaped self-locking rod 12 toward the self-locking disk through the vertical beam portion of the L-shaped self-locking rod 12. Specifically: when the screw slider 26 does not move, one side of the screw slider 26 is close to the inner wall of the flange of the upper frame 2. At this time, the limit stop 262 of the screw slider will limit the position of the self-locking rod 12, so that the end of the spring limit shaft 82 is close to the inner wall of the self-locking rod limit hole 121. At this time, the first spring 42 is in a compressed state. When the screw slider 26 moves, the restriction of the limit stop 262 on the self-locking rod 12 will gradually decrease with the movement of the screw slider 26. At this time, the self-locking rod 12 will slide along the inner wall of the upper frame 02 under the action of the first spring 42. When sliding to the front end of the limit block 1-24 in the upper frame, the self-locking rod 12 will be restricted in the current position by the limit block 1-24. At this time, due to the sliding of the self-locking rod 12, the end of the self-locking rod 12 will slide forward into the self-locking groove 181 of the self-locking disk 18, thereby limiting the rotation of the self-locking disk 18. At this time, the gear shaft 41 is restricted in the current position, and the rotation of the worm 17 is converted into the sliding of the screw slider 26 through the transmission mechanism. The sliding of the screw slider 26 drives the deflection angle of the self-aligning roller 33. The deviated belt generates a centripetal force under the action of the deflected self-aligning roller 33. Under the action of the centripetal force, the belt axis gradually coincides with the correction device, thereby completing the correction; then only when the motor 16 reverses the output to make the screw slider 26 return to its original position, the limit block 262 will push the self-locking rod 12 to contact the spring support seat 8 in this process. At this time, the first spring 42 is in a compressed state, and the end of the self-locking rod 12 slides out of the self-locking groove 181 of the self-locking disk 18. At this time, due to the reverse output of the motor 16, the rotation direction of the intermediate gear 7 changes, and the limit rod 6 rotates in the other direction, driving the gear shaft 41 to slide to the center of the slide groove, and the correction process ends.

[0033] Embodiment 3, as Figure 4 , 10As shown, a belt deviation correction device is further optimized on the basis of embodiment 1 or 2. The telescopic self-aligning roller described in this embodiment includes a self-aligning roller 33. The telescopic self-aligning roller adopts a double-direction-adjusting roller structure to increase the base area with the belt and improve the supporting and deviation correction effect; at the same time, the influence of the deformation of the main beam on the deviation correction of the traditional self-aligning mechanism is reduced. In this embodiment, one end of the self-aligning roller 33 is connected to the lead screw slider 26 through a universal joint 28, and the other end is connected to the telescopic slider seat set on the rotating shaft 21 through a universal joint 28; the universal joint 28 is connected to the corresponding lead screw slider or telescopic slider seat through an articulated seat 27, and the telescopic slider seat is used to change the length of the axis direction of the self-aligning roller to adapt to the tilt adjustment of the self-aligning roller; the telescopic slider seat is provided with a deviation correction stop roller 30, which contacts and cooperates with the side of the belt to limit the running boundary of the belt and reduce the friction of the belt.

[0034] Specifically, the self-aligning rollers are divided into two groups of four. When correcting the deviation, the four self-aligning rollers simultaneously generate centripetal force on the belt to achieve greater correction force. Fig.11 As shown, the telescopic slider seat includes a support 31, and connecting sleeves 313 cooperating with the rotating shaft 21 are provided on both sides of the support 31. A telescopic slider 32 is slidably provided in the support 31, and the telescopic slider 32 is connected to the self-aligning roller 33 through a universal joint 28. A roller stop bracket 314 is provided on the support 31, and a top slide groove 311 is provided on the top of the roller stop bracket 314, and a lower slide groove 312 is provided on the top of the support 31. The upper and lower ends of the deviation correction roller 30 are respectively slidably set in the top slide groove 311 and the lower slide groove 312 through the roller stop slider 29, and a spring rod 301 is provided on the side of the roller stop slider 29 facing the roller stop bracket 314, and a second spring 43 is sleeved on the spring rod 301. When the belt deviates, the edge of the belt will push the deviation correction stop roller 30 and the stop roller slider 29 to slide toward the end of the slide groove, and the second spring 43 will gradually compress during this process. When the spring rod 301 hits the inner wall of the support 31, the deviation correction stop roller 30 and the stop roller slider 29 stop sliding. When the belt returns to its original position due to deviation correction, the second spring 43 will push the deviation correction stop roller 30 and the stop roller slider 29 back to their original position.

[0035] In this embodiment, as a preference, the lower roller 22 is arranged on the upper frame 2 through the lower roller support seat 25, and the side roller 23 is hinged to the upper frame 2 through the side roller support seat 20; or the side roller support seat 20 is hinged with the lower roller support seat 25; in this embodiment, the hinged connection of the side roller support seat 20 and the lower roller support seat 25 is taken as an example. The side roller support seat 20 is connected to the rotating shaft 21 through the shaft kit 241; the hinged cooperation between the two is realized. In this embodiment, the shaft kit 241 is provided with an inclination sensor 35 and a deflection lever arm 361, and a deflection measuring rod 36 is hinged on the deflection lever arm 361, and the deflection measuring rod 36 is vertically arranged. The inclination of the deflection measuring rod 36 is measured by the inclination sensor 35, and the rotation speed of the motor 16 is adjusted according to the size of the inclination, thereby adjusting the correction force. The deflection measuring rod is installed at the end of the inclination sensor. When the belt deviates, the deflection measuring rod is pushed to generate an inclination. The inclination sensor is used to detect the size of the inclination and convert it into a signal to transmit to the servo motor, thereby controlling the output of the servo motor. Specifically, when the belt deviates, it will push the corresponding side deflection measuring rod 36 to rotate. The rotation angle of the deflection measuring rod 36 is detected and obtained by the inclination sensor 35, and the signal is transmitted to the background controller. The background controller controls the motor to rotate and drive, through the cooperation of the eccentricity adjustment mechanism and the deflection adjustment mechanism, the belt is adjusted in the opposite direction to achieve the purpose of correction.

[0036] like Fig.13 As shown, the implementation principle of increasing the groove angle to improve the deviation correction force is: assuming that the belt is subjected to a horizontal lateral force of N, it can be decomposed into a force N2 perpendicular to the side of the belt and a force N1 parallel to the side of the belt, where N1 is the factor causing the conveyor belt to deviate. It can be seen that the larger the value of the groove angle α, the smaller the value of N1 (assuming that other external conditions are the same, α≤90°), and the larger the value of N2. In other words, after the groove angle increases, a larger part of the lateral force will be consumed on the positive pressure, and the positive pressure will not cause deviation, thereby improving the deviation correction force. The present invention drives the rack 39 to slide toward the end of the transverse chute 1-13. During this process, the rack 39 pushes the adjustment slider 19 to slide. The top of the adjustment slider 19 is hinged with the Y-shaped adjustment rod. The sliding of the adjustment slider 19 causes the angle of the Y-shaped adjustment rod to increase. The Y-shaped adjustment rod pushes the rotating shaft 21 to rotate around the hinge point between the side roller support seat 20 and the lower roller support seat 25, thereby changing the angle of the side roller support seat 20, thereby increasing the groove angle and achieving the purpose of deviation correction.

[0037] like Fig.14As shown, the implementation principle of achieving the correction effect by adjusting the angle of the self-aligning roller is as follows: when the conveyor belt deviates for some reason, the center line O′-O′ of the conveyor belt deviates from the center line OO of the conveyor, and the correction device will deflect the self-aligning roller by an angle α. At this time, the force F given by the belt to the self-aligning roller can be decomposed into a force Fr perpendicular to the rotation direction of the self-aligning roller and a force Fa outward along the axial direction of the self-aligning roller. At this time, due to the rotation of the self-aligning roller, the force Fr is offset, and the force Fa gives the belt a force Fa' inward along the axial direction of the self-aligning roller, and the belt is corrected by Fa'. The present invention converts the rotation of the worm 17 into the movement of the lead screw slider 26 through the transmission assembly, thereby changing the deflection angle of the self-aligning roller 33. The deflected self-aligning roller 33 will generate a centripetal force on the deviated belt to correct the center of gravity of the belt.

[0038] Embodiment 4, a TBM main machine belt conveyor, comprising the belt deviation correction device described in any one of embodiments 1 to 3, the belt deviation correction device matches the main machine belt arranged on the TBM; it is used to correct the deviation of the TBM main machine belt in time, provide a new deviation correction mechanism for the TBM main machine belt conveyor, improve the conveying efficiency of the TBM main machine belt conveyor, and further improve the construction efficiency of the TBM.

[0039] In the description of the present invention, it should be understood that the terms "vertical", "lateral", "up", "down", "front", "back", "left", "right", "horizontal", "top", "bottom", "inside" and "outside" etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0040] In the description of the invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the invention can be understood according to specific circumstances.

[0041] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A belt deviation correcting device, comprising a roller assembly (200), characterized in that: It also includes a support frame (100) and a deviation correction mechanism (300), wherein the deviation correction mechanism (300) and the roller assembly (200) are arranged on the support frame (100); the roller assembly (200) includes a lower roller (22) and a side roller (23) hinged to the support frame (100); The deflection correction mechanism (300) comprises an angle adjustment component (3-1) and an eccentricity adjustment component (3-2); the eccentricity adjustment component (3-2) comprises a rotating shaft (21) connected to a side roller (23); a telescopic self-aligning roller is provided between the rotating shaft (21) and the support frame (100); the telescopic self-aligning roller is connected to a longitudinal drive mechanism provided on the support frame (100); the angle adjustment component (3-1) comprises an adjustment rod (24); one end of the adjustment rod (24) is hinged to the rotating shaft (21), and the other end is connected to a transverse drive mechanism provided on the support frame.

2. The belt deviation correcting device according to claim 1, characterized in that: The support frame (100) comprises a lower frame (1) arranged transversely and an upper frame (2) arranged longitudinally, the upper frame (2) being located on the lower frame (1), a transverse driving mechanism being arranged on the lower frame (1), and a longitudinal driving mechanism being arranged on the upper frame (2), and the transverse driving mechanism and the longitudinal driving mechanism forming a linkage driving structure through a selective locking mechanism.

3. The belt deviation correcting device according to claim 2, characterized in that: The transverse driving mechanism comprises a transverse slide groove (1-13) arranged on the lower frame (1), a transverse sliding rack (39) symmetrically arranged in the transverse slide groove (1-13) is arranged in the transverse slide groove (1-13), the transverse sliding rack (39) is meshed with two transmission gears (38) arranged in the transverse slide groove (1-13), the transmission gear (38) is connected to a synchronously rotating intermediate gear (7) through a gear connecting sleeve (37), a main gear (5) is arranged between the two intermediate gears (7) and the two intermediate gears (7) are meshed with the main gear (5), and the main gear (5) is transmission-connected to a motor (16) arranged on one side of the upper frame (2); The transverse sliding rack (39) is limited in the transverse sliding groove (1-13) by a baffle (34), and an adjusting slider (19) is provided at the end of the transverse sliding rack (39). The adjusting rod (24) is a Y-shaped frame, the single rod end of the Y-shaped frame is hinged to the adjusting slider (19), and the double rod end of the Y-shaped frame is hinged to the rotating shaft (21); the main gear (5) is connected to the motor (16) through a worm gear (17), and the intermediate gear (7) and the main gear (5) are both located in the upper frame (2).

4. The belt deviation correcting device according to claim 3 is characterized in that: The longitudinal drive mechanism comprises a left screw mechanism and a right screw mechanism which are arranged on the same side of the upper frame (2). The left screw mechanism and the right screw mechanism both comprise a screw support (14) which is arranged in the upper frame (2). The screw support (14) is provided with a longitudinal screw (15). The longitudinal screw (15) is provided with a screw slider (26) which is threadedly matched. The screw slider (26) is provided with a T-shaped limit groove (261) which is slidably matched with the screw support (14). The lower part of the telescopic self-aligning roller is hinged to the screw slider (26). The end of the longitudinal screw (15) facing the lower frame (1) is provided with a connecting bevel gear (13). The connecting bevel gear (13) is meshed with a driving bevel gear (11) arranged in the upper frame (2). The bottom of the driving bevel gear (11) is provided with a driven wheel (10) which rotates synchronously. The driven wheel (10) of the left screw mechanism and the driven wheel (10) of the right screw mechanism are selectively connected to the selective locking mechanism.

5. The belt deviation correcting device according to claim 4, characterized in that: The selective locking mechanism comprises a limit gear (9) symmetrically arranged in the upper frame (2), the two limit gears (9) are connected via a limit rod (6), the limit rod (6) is rotatably connected to a first positioning shaft (212), the first positioning shaft (212) is eccentrically arranged on the main gear (5), the bottom of the gear shaft of the limit gear (9) is slidably limited in a limit shaft slide groove (1-26), the limit shaft slide groove (1-26) is arranged on the bottom cover plate (3) of the upper frame (2), a self-locking disk (18) is symmetrically arranged on the bottom cover plate (3), the gear shaft of the limit gear (9) is inserted into a first self-locking groove (182) of the self-locking disk (18), and the other two second self-locking grooves (181) of the self-locking disk (18) are respectively arranged corresponding to two trigger-type locking rod assemblies arranged on the left and right sides of the upper frame (2).

6. The belt deviation correcting device according to claim 5, characterized in that: The trigger-type locking rod assembly comprises an L-shaped self-locking rod (12) arranged in the upper frame (2) and arranged in the longitudinal direction, a limit block (1-24) contacting and cooperating with the L-shaped self-locking rod (12) is provided on the inner wall of the upper frame (2), the vertical beam portion of the L-shaped self-locking rod (12) is arranged corresponding to the reset assembly arranged in the upper frame (2), and the horizontal beam end of the L-shaped self-locking rod (12) corresponds to the self-locking disk (18); The reset assembly comprises a spring support seat (8) arranged at the inner end of the upper frame (2); a spring limiting shaft (82) is arranged on the side of the spring support seat (8) facing the L-shaped self-locking rod (12); the spring limiting shaft (82) cooperates with a limiting hole arranged on the end of the vertical beam of the L-shaped self-locking rod (12); and a first spring (42) is sleeved on the spring limiting shaft (82); a limiting block (262) is arranged on the lead screw slider (26) corresponding to the vertical beam of the L-shaped self-locking rod (12); the limiting block (262) can limit the movement of the L-shaped self-locking rod (12) through the vertical beam of the L-shaped self-locking rod (12).

7. The belt deviation correcting device according to claim 5 or 6, characterized in that: The telescopic self-aligning roller comprises a self-aligning roller (33), one end of which is connected to a lead screw slider (26) via a universal joint (28), and the other end of which is connected to a telescopic slider seat arranged on a rotating shaft (21) via a universal joint (28); a deviation correction blocking roller (30) is provided on the telescopic slider seat.

8. The belt deviation correcting device according to claim 7, characterized in that: The telescopic slider seat comprises a support (31), connecting sleeves (313) matched with the rotating shaft (21) are provided on both sides of the support (31), a telescopic slider (32) is slidably provided in the support (31), the telescopic slider (32) is connected to the self-aligning roller (33) through a universal joint (28), a roller stop bracket (314) is provided on the support (31), a top slide groove (311) is provided on the top of the roller stop bracket (314), a lower slide groove (312) is provided on the top of the support (31), the upper and lower ends of the deviation correction roller (30) are slidably arranged in the top slide groove (311) and the lower slide groove (312) through the roller stop slider (29), and a spring rod (301) is provided on the side of the roller stop slider (29) facing the roller stop bracket (314), and a second spring (43) is sleeved on the spring rod (301).

9. The belt deviation correcting device according to claim 2 or 8, characterized in that: The lower roller (22) is arranged on the upper frame (2) via a lower roller support seat (25); the side roller (23) is hinged to the upper frame (2) via a side roller support seat (20); the side roller support seat (20) is connected to the rotating shaft (21) via a shaft kit (241); an inclination sensor (35) and a deflection arm (361) are provided on the shaft kit (241); a deflection measuring rod (36) is hinged to the deflection arm (361); and the deflection measuring rod (36) is arranged vertically.

10. A TBM main machine belt conveyor, characterized in that: It comprises the belt deviation correcting device according to any one of claims 1 to 9, and the belt deviation correcting device matches the main machine belt arranged on the TBM.

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