Vibration damper for underground carry-scraper

Abstract

The invention relates to the technical field of vehicle damping devices, and discloses a damping device for an underground carry-scraper, which comprises an operation frame, a bucket frame arranged on one side of the operation frame, a frame connecting mechanism arranged between the operation frame and the bucket frame, and a support damping mechanism arranged at the bottom of the operation frame, through the arranged frame connecting mechanism, when the bucket car encounters an uneven road section, in the advancing process, the bucket car frame is lifted firstly, the front hinge plate is pressed downwards at the position of a pin shaft, the rear hinge plate is kept still, the air vibration reduction assembly carries out air replacement, then the car frame is operated to be lifted, air flows back, and the operation is repeated in sequence, so that the effects of vibration reduction and pressure resistance are achieved, and the service life of the bucket car frame is prolonged. When the underground forklift steers, steering vibration can be generated, the steering vibration is pulled by the steering hydraulic rod and kept stable, the first air damping pad and the second air damping pad conduct air exchange at opposite positions as well, and therefore the effects of improving the overall stability and relieving fatigue damage of parts are achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of vehicle vibration reduction devices, and in particular to a vibration reduction device for an underground scraper. Background Art

[0002] When underground loaders operate in complex and uneven mine environments, they frequently encounter vibrations and shocks, which not only affect the stability and operating comfort of the machine, but also cause fatigue damage to the frame and connecting parts, reducing the service life of the machine. In order to effectively reduce these adverse effects, a specially designed vibration reduction device came into being. Through a reasonable vibration reduction mechanism and layout, it absorbs and transmits vibrations to ensure that the machine can operate safely and efficiently in harsh environments.

[0003] Patent publication number CN104163084A discloses a vehicle vibration reduction device and a vehicle using the vibration reduction device. The vehicle vibration reduction device includes a chassis connector for fixing to the chassis of the vehicle and a body connector for fixing to the vehicle body. One of the chassis connector and the body connector is provided with a cylindrical structure for inserting the other of the two. An elastic buffer structure for buffering the force between the body connector and the chassis connector is fixed between the inner wall of the cylindrical structure and the body connector or the chassis connector inserted into the cylindrical structure. The elastic buffer structure is evenly arranged around the axis of the cylindrical structure. The chassis connector and the body connector that are matched with the sleeve can rely on the elastic buffer structure between the two to move relative to each other in any direction and simultaneously play a buffering role on the force and moment in the corresponding direction, which can effectively buffer the force and moment in the horizontal direction, thereby better attenuating the vibration between the vehicle body and the chassis.

[0004] The prior art has the following defects: Existing vehicle vibration reduction devices lack vibration reduction at the connection between the scraper frame and the loader: Existing vehicle vibration reduction devices are mostly concentrated on the wheel suspension system and the frame support points, but the vibration reduction performance at the connection between the scraper frame and the loader is relatively insufficient. When the scraper is performing excavation and loading operations, the strong vibration generated by the bucket will be transmitted through the frame connection, resulting in the intensified relative movement of the front and rear frames, affecting the stability and operating comfort of the entire machine, and accelerating the wear and fatigue damage of the connecting parts. Therefore, it is necessary to set a vibration reduction structure to deal with the vibration at the connection between the scraper frame, reduce the vibration transmission at the frame connection, reduce the relative movement, and achieve the effect of improving the overall stability and reducing the fatigue damage of the components.

[0005] The existing vehicle vibration reduction device cannot cope with the vibration of the scraper bucket during operation: the existing vehicle vibration reduction device performs poorly in coping with the vibration of the scraper bucket during operation. The impact force generated when the bucket is operating is large, and the vibration reduction device cannot completely buffer it, affecting the operational stability and comfort. Moreover, under long-term high-load operation, the vibration reduction device is prone to failure or damage, reducing its service life. Therefore, it is necessary to set up a vibration reduction device specifically for the vibration during bucket operation, and it is movable to avoid affecting other functions and realize vibration reduction adjustment. The vibration reduction device is adjusted according to the different working stages of the scraper to ensure that the vibration reduction effect is continuous and stable, so as to achieve the effect of improving the operational stability and operating comfort of the scraper. Summary of the invention

[0006] In view of the problems in the prior art that the existing vehicle vibration reduction device lacks vibration reduction at the connection between the scraper frame and the existing vehicle vibration reduction device cannot cope with the vibration of the scraper bucket during operation, a vibration reduction device for an underground scraper is proposed.

[0007] The present application provides a vibration reduction device for an underground scraper loader, the purpose of which is to reduce vibration transmission at the frame connection by arranging an air vibration reduction assembly and a vibration reduction spring at the frame connection, reduce relative movement, and achieve the effect of improving overall stability and reducing fatigue damage of components; by arranging a movable support assembly at the bottom of the scraper loader, vibration reduction adjustment is achieved, and the shock absorbing device is adjusted according to different working stages of the scraper loader to ensure that the vibration reduction effect is continuous and stable, thereby achieving the effect of improving the operating stability and operating comfort of the scraper loader.

[0008] The technical solution of the present invention is: a vibration reduction device for an underground scraper, comprising an operating frame, a bucket frame arranged on one side of the operating frame, a frame connection mechanism arranged between the operating frame and the bucket frame, and a support vibration reduction mechanism arranged at the bottom of the operating frame, the frame connection mechanism comprises a plurality of rear hinged plates and a plurality of front hinged plates respectively fixedly connected to the operating frame and the bucket frame, a pin is inserted between the rear hinged plate and the front hinged plate, the front hinged plate is movably installed inside the rear hinged plate through the pin, and an air vibration reduction assembly is arranged between the rear hinged plate and the front hinged plate; The air vibration damping assembly includes a plurality of first air vibration damping pads and a plurality of second air vibration damping pads fixedly connected to the inner wall of the rear hinge plate, the plurality of first air vibration damping pads and the plurality of second air vibration damping pads are staggered between the rear hinge plate and the front hinge plate, an air connecting pipe is fixedly connected between the first air vibration damping pads and the second air vibration damping pads arranged opposite to each other, a steering slider is fixedly connected to one side of the plurality of first air vibration damping pads and the plurality of second air vibration damping pads close to the front hinge plate, a slide groove is provided on the inner wall of the front hinge plate, and the outer walls of the plurality of steering sliders are slidably connected to the inner wall of the slide groove.

[0009] Furthermore, a damping spring is fixedly mounted on the inner wall of the rear hinged plate, and the damping spring is arranged between the pin shaft and the air connecting pipe.

[0010] Furthermore, two steering hydraulic rods are symmetrically mounted on the inner wall of the operating frame, and the output ends of the two steering hydraulic rods are both hinged to the inner wall of the lower front hinged plate.

[0011] By adopting the above scheme, through the set frame connection mechanism, when encountering an uneven road section, the bucket frame will be lifted up first during the forward process, and the front hinge plate will be pressed down at the pin shaft, and the rear hinge plate will remain stationary. At this time, the first air vibration damping pad and the second air vibration damping pad on one side are compressed, and the first air vibration damping pad and the second air vibration damping pad on the other side are lifted up, and the air in the first air vibration damping pad and the second air vibration damping pad on the compressed side is discharged into the first air vibration damping pad and the second air vibration damping pad on the lifted side through the air connecting pipe, and then the frame is lifted up, and the air flows back. This is repeated in sequence to reduce vibration and resist pressure. When the underground shovel loader turns, steering vibration will be generated, which is pulled by the steering hydraulic rod to maintain stability. At this time, the steering sliders outside the first air vibration damping pad and the second air vibration damping pad slide in the slide groove inside the front hinge plate, so that the first air vibration damping pad and the second air vibration damping pad remain connected to the front hinge plate and the rear hinge plate. The first air vibration damping pad and the second air vibration damping pad also perform ventilation in opposite positions to reduce vibration and resist pressure. A vibration damping spring is arranged outside the pin shaft to improve the vibration reduction effect.

[0012] Furthermore, the support and shock-absorbing mechanism includes a bottom support plate arranged below the steering hydraulic rod, the bottom support plate is fixedly mounted on the bottom of the operating frame, a limiting assembly and a driving assembly are arranged inside the bottom support plate, two storage grooves are provided at the bottom of the bottom support plate, and support assemblies are arranged inside the two storage grooves.

[0013] Furthermore, the driving assembly includes a rack sliding groove opened on the inner wall of the bottom support plate, a telescopic cylinder is fixedly installed on the inner wall of the rack sliding groove, an output end of the telescopic cylinder is fixedly connected to a sliding rack, and the bottom of the sliding rack is slidably connected to the inner wall of the rack sliding groove.

[0014] Furthermore, the driving assembly also includes a driving rod rotatably connected to the inner wall of the bottom support plate, and a driving gear is fixedly connected to the outer wall of the driving rod located at the rack sliding groove, and the driving gear is meshed with the sliding rack.

[0015] By adopting the above scheme, through the setting of the driving assembly, when the bucket is working, a greater impact force will be generated. At this time, the stable operating frame can reduce the impact of the bucket on the operating frame, and the telescopic cylinder is operated. The output end of the telescopic cylinder pushes the sliding rack to slide in the rack sliding groove, and the driving gear then drives the support assembly to rotate through the driving rod, turning the support assembly from a parallel state in the storage groove to a vertical state.

[0016] Furthermore, the support assembly includes an outer sliding column and a downward pressure column fixedly connected to the outer wall of the driving rod, the end of the downward pressure column away from the driving rod is fixedly connected to a sliding plug, the outer wall of the sliding plug is slidably connected to an inner sliding column, the outer wall of the inner sliding column is slidably connected to the inner wall of the outer sliding column, the end of the inner sliding column close to the driving rod is fixedly connected to a sealing plug, and the inner wall of the sealing plug is slidably connected to the outer wall of the downward pressure column.

[0017] Furthermore, a compression spring is fixedly connected between one end of the sliding plug away from the driving rod and the inner wall of the inner sliding column, and a triangular pyramid grounding block is fixedly installed on one end of the inner sliding column away from the driving rod.

[0018] By adopting the above scheme, through the support assembly that is set up, when the bucket is operating, the triangular pyramid grounding block in the vertical support assembly contacts the ground and can slide on the ground, and the outer sliding column and the lower pressure column in the support assembly are connected to the operating frame through the bottom support plate. When the operating frame is impacted, the impact force can be mitigated by the sliding plug at the bottom of the lower pressure column and the extrusion spring between the inner sliding column, and part of the impact force can be transmitted to the ground through the triangular pyramid grounding block to reduce vibration and release force.

[0019] Furthermore, the limiting assembly includes a limiting groove opened on the inner wall of the bottom support plate, and a frustum-shaped stopper fixedly connected to the bottom of the sliding rack, and the frustum-shaped stopper slides in the limiting groove.

[0020] Furthermore, the limit assembly also includes two limit rods slidably connected to the inner wall of the bottom support plate, and one end of the two limit rods close to the limit groove is fixedly connected to a telescopic spring, and the telescopic spring is fixedly installed inside the bottom support plate. A connecting rope is fixedly connected between the two limit rods, and the outer wall of the connecting rope overlaps the outer wall of the truncated cone-shaped block.

[0021] By adopting the above scheme, a retractable limit rod needs to be set at the rotation angle of the support assembly to avoid damage to the driving gear and the sliding rack due to impact force through the setting of the limit assembly. The connecting rope between the two limit rods will be blocked by the conical block at the bottom of the sliding rack when the sliding rack moves, and then pulled and reset, so that the two limit rods are retracted and extended at the telescopic spring, thereby preventing the limit rod from blocking the rotating support assembly and at the same time playing a limiting role on the support assembly in the vertical state.

[0022] Beneficial effects of the present invention: Through the set frame connection mechanism, when encountering an uneven road section, the bucket frame will be lifted up first during the forward process, and the front hinge plate will be pressed down at the pin shaft, while the rear hinge plate will remain stationary. The air vibration reduction assembly will replace the air, and then the frame will be operated to lift up, and the air will flow back, which will be repeated in sequence to play a role in vibration reduction and pressure resistance. When the underground scraper turns, steering vibration will be generated, which will be pulled by the steering hydraulic rod to maintain stability. The first air vibration reduction pad and the second air vibration reduction pad will also exchange air in the opposite position, thereby reducing the vibration transmission at the frame connection and reducing relative movement, thereby achieving the effect of improving overall stability and reducing component fatigue damage.

[0023] By setting up the drive assembly and support assembly, when the bucket is working, a greater impact force will be generated. At this time, a stable operating frame can reduce the impact of the bucket on the operating frame. The drive assembly is operated to change the support assembly from a parallel state in the storage groove to a vertical state. The triangular pyramid grounding block in the vertical state support assembly contacts the ground and can slide on the ground. When the operating frame is impacted, the impact force can be mitigated by the support assembly, and part of the impact force can be transmitted to the ground through the triangular pyramid grounding block, thereby realizing vibration reduction adjustment. The shock absorbing device is adjusted according to different working stages of the scraper to ensure that the vibration reduction effect is continuous and stable, thereby achieving the effect of improving the operating stability and operating comfort of the scraper.

[0024] In order to avoid damage to the driving gear and the sliding rack due to impact force through the setting of the limit assembly, a retractable limit rod needs to be set at the rotation angle of the support assembly. The connecting rope between the two limit rods will be blocked and pulled by the conical block at the bottom of the sliding rack when the sliding rack moves, and then reset, so that the two limit rods can be retracted and retracted at the telescopic spring, thereby preventing the limit rod from blocking the rotating support assembly and at the same time playing a limiting role for the support assembly in the vertical state. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the main structure of the present invention; Figure 2 It is a front view of the main structure of the present invention; Figure 3 It is a partial structural schematic diagram of the frame connection mechanism of the present invention; Figure 4 For the present invention Figure 3 The structural diagram of the enlarged part at A in the middle; Figure 5 It is a schematic diagram of the explosion of the structure of the air vibration reduction assembly of the present invention; Figure 6 It is a partial structural schematic diagram of the supporting vibration reduction mechanism of the present invention; Figure 7 It is a schematic cross-sectional view of the structure of the bottom support plate of the present invention; Figure 8 For the present invention Figure 7 The structural diagram of the enlarged part at B in the middle; Fig. 9 This is a schematic diagram of the state in which the truncated cone-shaped stopper of the present invention moves the connecting rope; Fig.10 It is a schematic cross-sectional view of the structure of the support assembly of the present invention; Fig.11 It is a schematic diagram of the unfolded state of the support assembly of the present invention.

[0026] In the figure: 1. Operating frame; 2. Bucket frame; 3. Frame connection mechanism; 31. Rear hinge plate; 32. Steering hydraulic rod; 33. Front hinge plate; 34. Air damping assembly; 341. First air damping pad; 342. Air connecting pipe; 343. Steering slider; 344. Second air damping pad; 345. Damping spring; 346. Slide; 35. Pin; 4. Support damping mechanism; 41. Bottom support plate; 42. Storage slot; 43. Support assembly; 431. External Sliding column; 432, sealing plug; 433, inner sliding column; 434, extrusion spring; 435, downward pressure column; 436, sliding plug; 437, triangular pyramid grounding block; 44, limiting assembly; 441, limiting rod; 442, telescopic spring; 443, connecting rope; 444, truncated cone block; 445, limiting groove; 45, driving assembly; 451, rack sliding groove; 452, telescopic cylinder; 453, sliding rack; 454, driving gear; 455, driving rod. DETAILED DESCRIPTION

[0027] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0028] Reference Figure 1 - Fig.11 , provides a vibration reduction device for an underground scraper, including an operating frame 1, a bucket frame 2 arranged on one side of the operating frame 1, a frame connecting mechanism 3 arranged between the operating frame 1 and the bucket frame 2, and a supporting vibration reduction mechanism 4 arranged at the bottom of the operating frame 1, the frame connecting mechanism 3 includes a plurality of rear hinged plates 31 and a plurality of front hinged plates 33 respectively fixedly connected to the operating frame 1 and the bucket frame 2, a pin shaft 35 is inserted between the rear hinged plate 31 and the front hinged plate 33, the front hinged plate 33 is movably installed inside the rear hinged plate 31 through the pin shaft 35, and an air vibration reduction assembly 34 is arranged between the rear hinged plate 31 and the front hinged plate 33.

[0029] Reference Figure 3 - Figure 5The air vibration damping assembly 34 includes a plurality of first air vibration damping pads 341 and a plurality of second air vibration damping pads 344 fixedly connected to the inner wall of the rear hinge plate 31; the plurality of first air vibration damping pads 341 and the plurality of second air vibration damping pads 344 are alternately arranged between the rear hinge plate 31 and the front hinge plate 33; an air connecting pipe 342 is fixedly connected between the first air vibration damping pads 341 and the second air vibration damping pads 344 arranged opposite to each other; a steering slider 343 is fixedly connected to one side of the plurality of first air vibration damping pads 341 and the plurality of second air vibration damping pads 344 close to the front hinge plate 33; a slide groove 346 is provided on the inner wall of the front hinge plate 33; and the outer walls of the plurality of steering sliders 343 are slidably connected to the inner wall of the slide groove 346.

[0030] Reference Figure 3 - Figure 5 A damping spring 345 is fixedly installed on the inner wall of the rear hinged plate 31, and the damping spring 345 is arranged between the pin shaft 35 and the air connecting pipe 342. Two steering hydraulic rods 32 are symmetrically installed on the inner wall of the operating frame 1, and the output ends of the two steering hydraulic rods 32 are hinged to the inner wall of the lower front hinged plate 33.

[0031] Specifically, the plurality of front hinged plates 33 and the plurality of rear hinged plates 31 are divided into two groups. The upper group of front hinged plates 33 and rear hinged plates 31 play the role of connection and steering between the operating frame 1 and the bucket frame 2, and play the role of shock absorption and compression resistance through the air vibration reduction assembly 34 between the front hinged plates 33 and the rear hinged plates 31. The lower group of front hinged plates 33 and rear hinged plates 31 play the above-mentioned role, and are installed with two symmetrical steering hydraulic rods 32 to make the connection between the operating frame 1 and the bucket frame 2 more stable during steering.

[0032] Through the provided frame connection mechanism 3, when encountering an uneven road section, the bucket frame 2 will be lifted up first during the forward process, and the front hinge plate 33 will be pressed down at the pin shaft 35, and the rear hinge plate 31 will remain stationary. At this time, the first air vibration damping pad 341 and the second air vibration damping pad 344 on one side are compressed, and the first air vibration damping pad 341 and the second air vibration damping pad 344 on the other side are lifted up, and the air in the first air vibration damping pad 341 and the second air vibration damping pad 344 on the compressed side is discharged from the air connecting pipe 342 into the first air vibration damping pad 341 and the second air vibration damping pad 344 on the lifted side, and then the operating frame 1 is lifted up, and the air flows back, and the process is repeated in sequence. , which plays a role in reducing vibration and resisting pressure. When the underground scraper loader turns, steering vibration will be generated, which is pulled by the steering hydraulic rod 32 to maintain stability. At this time, the steering slider 343 outside the first air vibration damping pad 341 and the second air vibration damping pad 344 slides in the slide groove 346 inside the front hinge plate 33, so that the first air vibration damping pad 341 and the second air vibration damping pad 344 remain connected to the front hinge plate 33 and the rear hinge plate 31. The first air vibration damping pad 341 and the second air vibration damping pad 344 also perform ventilation in the opposite position, which plays a role in reducing vibration and resisting pressure. A vibration damping spring 345 is arranged outside the pin shaft 35 to improve the vibration reduction effect.

[0033] Reference Figure 6 The support and damping mechanism 4 includes a bottom support plate 41 arranged below the steering hydraulic rod 32. The bottom support plate 41 is fixedly installed at the bottom of the operating frame 1. A limit assembly 44 and a drive assembly 45 are arranged inside the bottom support plate 41. Two receiving grooves 42 are provided at the bottom of the bottom support plate 41. Support assemblies 43 are arranged inside the two receiving grooves 42.

[0034] Reference Figure 7 - Figure 8 The driving component 45 includes a rack sliding groove 451 opened on the inner wall of the bottom support plate 41, and a telescopic cylinder 452 is fixedly installed on the inner wall of the rack sliding groove 451. The output end of the telescopic cylinder 452 is fixedly connected to a sliding rack 453, and the bottom of the sliding rack 453 is slidingly connected to the inner wall of the rack sliding groove 451. The driving component 45 also includes a driving rod 455 rotatably connected to the inner wall of the bottom support plate 41, and the driving rod 455 is fixedly connected to the outer wall of the rack sliding groove 451, and the driving gear 454 is meshed with the sliding rack 453.

[0035] By setting up the driving assembly 45, when the bucket is working, a greater impact force will be generated. At this time, the stable operating frame 1 can reduce the impact of the bucket on the operating frame 1, and the telescopic cylinder 452 is operated. The output end of the telescopic cylinder 452 pushes the sliding rack 453 to slide in the rack sliding groove 451, and the driving gear 454 then drives the supporting assembly 43 to rotate through the driving rod 455, and the supporting assembly 43 is changed from a parallel state in the storage groove 42 to a vertical state.

[0036] Reference Fig.10 - Fig.11 The support assembly 43 includes an outer sliding column 431 and a downward pressure column 435 fixedly connected to the outer wall of the driving rod 455, the end of the downward pressure column 435 away from the driving rod 455 is fixedly connected with a sliding plug 436, the outer wall of the sliding plug 436 is slidably connected with the inner sliding column 433, the outer wall of the inner sliding column 433 is slidably connected to the inner wall of the outer sliding column 431, the end of the inner sliding column 433 close to the driving rod 455 is fixedly connected with a sealing plug 432, the inner wall of the sealing plug 432 is slidably connected to the outer wall of the downward pressure column 435, an extrusion spring 434 is fixedly connected between the end of the sliding plug 436 away from the driving rod 455 and the inner wall of the inner sliding column 433, and a triangular pyramid grounding block 437 is fixedly installed on the end of the inner sliding column 433 away from the driving rod 455.

[0037] Specifically, the driving rod 455, the outer sliding column 431, the pressing column 435 and the sliding plug 436 are connected as a whole, and the sealing plug 432, the inner sliding column 433 and the triangular pyramid grounding block 437 are connected as a whole, and the two are telescopically slidable through the compression spring 434.

[0038] Through the support assembly 43, when the bucket is operating, the triangular pyramid grounding block 437 in the vertical state support assembly 43 contacts the ground and can slide on the ground, and the outer sliding column 431 and the downward pressure column 435 in the support assembly 43 are connected to the operating frame 1 through the bottom support plate 41. When the operating frame 1 is impacted, the impact force can be mitigated by the sliding plug 436 at the bottom of the downward pressure column 435 and the extrusion spring 434 between the inner sliding column 433, and part of the impact force can be transmitted to the ground through the triangular pyramid grounding block 437 to reduce vibration and release force.

[0039] Reference Figure 7 - Figure 8The limiting assembly 44 includes a limiting groove 445 opened on the inner wall of the bottom support plate 41, and a truncated cone-shaped stopper 444 fixedly connected to the bottom of the sliding rack 453, and the truncated cone-shaped stopper 444 slides in the limiting groove 445. The limiting assembly 44 also includes two limiting rods 441 slidably connected to the inner wall of the bottom support plate 41, and one end of the two limiting rods 441 close to the limiting groove 445 is fixedly connected with a telescopic spring 442, and the telescopic spring 442 is fixedly installed inside the bottom support plate 41. A connecting rope 443 is fixedly connected between the two limiting rods 441, and the outer wall of the connecting rope 443 overlaps the outer wall of the truncated cone-shaped stopper 444.

[0040] By setting the limit assembly 44, in order to avoid the impact force damaging the driving gear 454 and the sliding rack 453, it is necessary to set a retractable limit rod 441 at the rotation angle of the support assembly 43. The connecting rope 443 between the two limit rods 441 will be blocked and pulled by the conical block 444 at the bottom of the sliding rack 453 when the sliding rack 453 moves, and then reset, so that the two limit rods 441 are retracted and retracted at the telescopic spring 442, thereby preventing the limit rod 441 from blocking the rotating support assembly 43, and at the same time playing a limiting role on the vertical support assembly 43.

[0041] During use, when encountering an uneven road section, the bucket frame 2 will be lifted up first during the forward process, and the front hinge plate 33 will be pressed down at the pin shaft 35, and the rear hinge plate 31 will remain stationary. The air damping assembly 34 will replace the air, and then the operating frame 1 will be lifted, and the air will flow back, which will be repeated in sequence to play a role in vibration reduction and pressure resistance. When the underground scraper turns, steering vibration will be generated, which will be pulled by the steering hydraulic rod 32 to maintain stability. The first air damping pad 341 and the second air damping pad 344 will also perform air exchange at the opposite position to play a role in vibration reduction and pressure resistance. A damping spring 345 is arranged on the outside of the pin shaft 35 to improve the vibration reduction effect. When the bucket is operating, a greater impact force will be generated. At this time, the stable operating frame 1 can be To reduce the impact of the bucket on the operating frame 1, operate the drive assembly 45 to change the support assembly 43 from the parallel state in the storage groove 42 to the vertical state. The triangular pyramid grounding block 437 in the vertical state support assembly 43 contacts the ground and can slide on the ground. When the operating frame 1 is impacted, the impact force can be mitigated by the support assembly 43, and part of the impact force can be transmitted to the ground through the triangular pyramid grounding block 437 to reduce vibration and release force. In order to avoid damage to the driving gear 454 and the sliding rack 453 by the impact force, a retractable limit rod 441 is set at the rotation angle of the support assembly 43, so as to prevent the limit rod 441 from blocking the rotating support assembly 43 and at the same time limit the support assembly 43 in the vertical state.

[0042] Working principle of the present invention: When an underground shovel loader is driving, due to the complexity of the underground environment and the requirements of the operation, the underground shovel loader often encounters various bumps. The underground shovel loader is generally composed of an operating frame 1 and a bucket frame 2. Therefore, it is necessary to reduce the vibration of the connection part between the operating frame 1 and the bucket frame 2.

[0043] When encountering an uneven road section, the bucket frame 2 will be lifted up first during the forward process, and the front hinge plate 33 will be pressed down at the pin shaft 35, and the rear hinge plate 31 will remain stationary. At this time, the first air vibration damping pad 341 and the second air vibration damping pad 344 on one side are compressed, and the first air vibration damping pad 341 and the second air vibration damping pad 344 on the other side are lifted up, and the air in the first air vibration damping pad 341 and the second air vibration damping pad 344 on the compressed side is discharged into the first air vibration damping pad 341 and the second air vibration damping pad 344 on the lifted side through the air connecting pipe 342, and then the operating frame 1 is lifted up, and the air refluxes, and this is repeated in sequence, which plays a role in vibration reduction and pressure resistance.

[0044] When the underground shovel loader turns, steering vibration will be generated, which is pulled by the steering hydraulic rod 32 to maintain stability. At this time, the steering slider 343 outside the first air vibration damping pad 341 and the second air vibration damping pad 344 slides in the slide groove 346 inside the front hinge plate 33, so that the first air vibration damping pad 341 and the second air vibration damping pad 344 maintain connection with the front hinge plate 33 and the rear hinge plate 31. The first air vibration damping pad 341 and the second air vibration damping pad 344 also perform ventilation in the opposite positions to play a role in vibration reduction and pressure resistance, and a vibration damping spring 345 is arranged outside the pin shaft 35 to improve the vibration reduction effect.

[0045] When the bucket is working, a greater impact force will be generated. At this time, the stable operating frame 1 can reduce the impact of the bucket on the operating frame 1, and the telescopic cylinder 452 is operated. The output end of the telescopic cylinder 452 pushes the sliding rack 453 to slide in the rack sliding groove 451, and the driving gear 454 then drives the support assembly 43 to rotate through the driving rod 455, turning the support assembly 43 from a parallel state in the storage groove 42 to a vertical state.

[0046] The triangular pyramid grounding block 437 in the vertical state support assembly 43 contacts the ground and can slide on the ground. The outer sliding column 431 and the downward pressure column 435 in the support assembly 43 are connected to the operating frame 1 through the bottom support plate 41. When the operating frame 1 is impacted, the impact force can be mitigated by the sliding plug 436 at the bottom of the downward pressure column 435 and the extrusion spring 434 between the inner sliding column 433, and part of the impact force can be transmitted to the ground through the triangular pyramid grounding block 437 to reduce vibration and release force.

[0047] In order to avoid damage to the driving gear 454 and the sliding rack 453 due to impact force, a retractable limit rod 441 needs to be set at the rotation angle of the support assembly 43. The connecting rope 443 between the two limit rods 441 will be blocked and pulled by the conical block 444 at the bottom of the sliding rack 453 when the sliding rack 453 moves, and then reset, so that the two limit rods 441 can be retracted and retracted at the telescopic spring 442, thereby preventing the limit rod 441 from blocking the rotating support assembly 43, and at the same time playing a limiting role for the support assembly 43 in the vertical state.

[0048] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A vibration reduction device for an underground scraper, comprising an operating frame (1), a bucket frame (2) arranged on one side of the operating frame (1), a frame connection mechanism (3) arranged between the operating frame (1) and the bucket frame (2), and a support vibration reduction mechanism (4) arranged at the bottom of the operating frame (1), characterized in that: The frame connection mechanism (3) comprises a plurality of rear hinged plates (31) and a plurality of front hinged plates (33) respectively fixedly connected to the operating frame (1) and the bucket frame (2); a pin shaft (35) is inserted between the rear hinged plates (31) and the front hinged plates (33); the front hinged plates (33) are movably mounted inside the rear hinged plates (31) via the pin shaft (35); and an air vibration reduction assembly (34) is provided between the rear hinged plates (31) and the front hinged plates (33); The air vibration damping assembly (34) comprises a plurality of first air vibration damping pads (341) and a plurality of second air vibration damping pads (344) fixedly connected to the inner wall of the rear hinge plate (31); the plurality of first air vibration damping pads (341) and the plurality of second air vibration damping pads (344) are staggeredly arranged between the rear hinge plate (31) and the front hinge plate (33); an air connecting pipe (342) is fixedly connected between the first air vibration damping pads (341) and the second air vibration damping pads (344) arranged opposite to each other; a steering slider (343) is fixedly connected to one side of the plurality of first air vibration damping pads (341) and the plurality of second air vibration damping pads (344) close to the front hinge plate (33); a slide groove (346) is provided on the inner wall of the front hinge plate (33); and the outer walls of the plurality of steering sliders (343) are slidably connected to the inner wall of the slide groove (346).

2. The vibration reduction device for underground loader according to claim 1, characterized in that: A damping spring (345) is fixedly mounted on the inner wall of the rear hinge plate (31), and the damping spring (345) is arranged between the pin shaft (35) and the air connecting pipe (342).

3. The vibration reduction device for underground loader according to claim 2, characterized in that: Two steering hydraulic rods (32) are symmetrically mounted on the inner wall of the operating frame (1), and the output ends of the two steering hydraulic rods (32) are both hinged to the inner wall of the lower front hinge plate (33).

4. The vibration reduction device for underground loader according to claim 3, characterized in that: The support and vibration reduction mechanism (4) comprises a bottom support plate (41) arranged below the steering hydraulic rod (32); the bottom support plate (41) is fixedly mounted on the bottom of the operating frame (1); a limit assembly (44) and a drive assembly (45) are arranged inside the bottom support plate (41); two receiving grooves (42) are provided at the bottom of the bottom support plate (41); and support assemblies (43) are arranged inside the two receiving grooves (42).

5. The vibration reduction device for underground loader according to claim 4, characterized in that: The driving assembly (45) comprises a rack sliding groove (451) formed on the inner wall of the bottom support plate (41); a telescopic cylinder (452) is fixedly mounted on the inner wall of the rack sliding groove (451); an output end of the telescopic cylinder (452) is fixedly connected to a sliding rack (453); and a bottom of the sliding rack (453) is slidably connected to the inner wall of the rack sliding groove (451).

6. The vibration reduction device for underground loader according to claim 5, characterized in that: The driving assembly (45) further comprises a driving rod (455) rotatably connected to the inner wall of the bottom support plate (41); a driving gear (454) is fixedly connected to the outer wall of the driving rod (455) located at the position of the rack sliding groove (451); and the driving gear (454) is meshed with the sliding rack (453).

7. The vibration reduction device for underground loader according to claim 6, characterized in that: The support assembly (43) comprises an outer sliding column (431) fixedly connected to the outer wall of the driving rod (455) and a downward pressure column (435); the downward pressure column (435) is fixedly connected to a sliding plug (436) at one end away from the driving rod (455); the outer wall of the sliding plug (436) is slidably connected to an inner sliding column (433); the outer wall of the inner sliding column (433) is slidably connected to the inner wall of the outer sliding column (431); the inner sliding column (433) is fixedly connected to a sealing plug (432) at one end close to the driving rod (455); the inner wall of the sealing plug (432) is slidably connected to the outer wall of the downward pressure column (435).

8. The vibration reduction device for underground loader according to claim 7, characterized in that: An extrusion spring (434) is fixedly connected between one end of the sliding plug (436) away from the driving rod (455) and the inner wall of the inner sliding column (433), and a triangular pyramid grounding block (437) is fixedly installed on one end of the inner sliding column (433) away from the driving rod (455).

9. The vibration reduction device for underground loader according to claim 6, characterized in that: The limiting assembly (44) comprises a limiting groove (445) formed on the inner wall of the bottom support plate (41), and a frustoconical stopper (444) fixedly connected to the bottom of the sliding rack (453), wherein the frustoconical stopper (444) slides in the limiting groove (445).

10. The vibration reduction device for underground loader according to claim 9, characterized in that: The limiting assembly (44) further comprises two limiting rods (441) slidably connected to the inner wall of the bottom support plate (41); one end of the two limiting rods (441) close to the limiting groove (445) is fixedly connected to a telescopic spring (442); the telescopic spring (442) is fixedly installed inside the bottom support plate (41); a connecting rope (443) is fixedly connected between the two limiting rods (441); and the outer wall of the connecting rope (443) overlaps the outer wall of the truncated cone-shaped stopper (444).

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