Damping device for coal mining machine for coal mine
By using rubber plates in the coal miner to change the vibration transmission path and the piston rod extrude gas in the piston cylinder to buffer the column, the vibration and impact problems of coal miner are solved, and a more efficient shock absorption effect is achieved.
Patent Information
- Application Number
- CN202422156885.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-04
- Publication Date
- 2025-07-01
- Estimated Expiration
- 2034-09-04
AI Technical Summary
During the operation of existing coal mining machines, due to vibration and impact, equipment damage and coal mining efficiency and mass decrease. In the prior art, springs cannot effectively consume the absorbed pressure, resulting in an increase in vibration amplitude.
A shock absorbing device for coal mining machines is adopted to change the transmission path of vibration through rubber plates, and the piston rod is used to squeeze gas in the piston cylinder, so that the extruded gas can buffer the column, thereby achieving shock absorption effect.
It effectively reduces the vibration and impact of the coal mining machine, improves the efficiency and quality of coal mining, and avoids rebound through the mutual consumption of pressure springs, further improving the shock absorption effect.
Smart Images
Figure CN223049311U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of coal mining machines, in particular to a shock absorbing device for coal mining machines used in coal mines. Background Art
[0002] A coal mining machine is a mechanized equipment used for coal mining, usually used in underground or open-pit mining. The main working principle of the coal mining machine is to use the continuous rotation of the turning column and cutting gear to remove the coal on the working face and transport it to the conveyor belt. According to different coal mining methods and working environments, coal mining machines can be divided into different types.
[0003] Coal mining machines will generate vibration and impact during the coal mining process. If not controlled, it will cause damage to equipment and personnel, and affect the efficiency and quality of coal mining. Therefore, in the design and structure of the coal mining machine, it is also necessary to fully consider the shock absorption effect, use appropriate materials and structural design, so that the coal mining machine can reduce vibration and impact when working;
[0004] In the prior art, the coal mining machine utilizes the elasticity of the spring to absorb and mitigate vibrations to absorb or mitigate vibrations and impacts during operation of the coal mining machine. However, the spring itself cannot consume the absorbed pressure, resulting in the absorbed pressure rebounding, thereby increasing the vibration amplitude. Summary of the invention
[0005] The purpose of the utility model is to provide a shock absorbing device for a coal mining machine used in a coal mine, which can change the transmission path of vibration through the elasticity of the rubber plate itself, so as to achieve a shock absorbing effect. At the same time, the piston rod squeezes the gas inside the piston cylinder, so that the squeezed gas will also buffer the column to achieve the purpose of shock absorption, so as to solve the problems raised in the above-mentioned background technology.
[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a shock absorbing device for a coal mining machine for a coal mine, comprising a coal mining machine body and a column fixedly connected to the lower side of the coal mining machine body, and the number of the columns is multiple, and a shock absorbing component is provided below the coal mining machine body; the shock absorbing component comprises a base sleeved on the outer side of the column;
[0007] The bottom ends of the plurality of columns are fixedly connected with fixed rods, and there are multiple fixed rods on the lower side of the columns. The bottom ends of the plurality of fixed rods are moved and overlapped on the inner lower side of the base. The bottom ends of the plurality of columns are fixedly connected with piston rods, and the inner lower sides of the plurality of bases are fixedly connected with piston cylinders. The plurality of piston rods are respectively slidably connected in the plurality of piston cylinders, and air outlet holes are opened on the lower sides of the plurality of bases.
[0008] Preferably, the plurality of air outlet holes are respectively connected to a plurality of piston cylinders, and the inner cavity size of the piston cylinder is larger than the inner cavity size of the air outlet holes.
[0009] Preferably, rubber plates are fixedly connected to the lower sides of the multiple bases, and filters are fixedly installed inside the multiple air outlet holes.
[0010] Preferably, buffer components are provided inside the multiple bases, and the buffer components include multiple first pressure springs sleeved outside the multiple fixing rods.
[0011] Preferably, the top ends of the first pressure springs are lapped on the bottom ends of the columns, and the bottom ends of the first pressure springs are lapped on the lower sides inside the bases.
[0012] Preferably, connecting rods are hinged to both sides inside the bases, and the number of connecting rods inside each base is two. The other ends of the connecting rods are hinged to hinge seats, and the hinge seats are slidably lapped on the lower sides inside the bases.
[0013] Preferably, sliding grooves are formed in the lower sides inside the bases, and the number of the sliding grooves is four. Sliders are slidably connected inside the four sliding grooves, and the upper sides of the sliders are fixedly connected to the lower sides of the hinge seats.
[0014] Preferably, the opposite surfaces of the two corresponding hinge seats are fixedly connected to the same second pressure spring, and the two second pressure springs inside the same base are located on the front and rear sides of the piston cylinder.
[0015] Compared with the prior art, the beneficial effects of the present utility model are as follows:
[0016] 1. The piston rod is used to extrude gas to buffer the column, and the rubber plate will also change the vibration transmission path. Since the rubber plate provided under the base can change the vibration transmission path through its own elasticity, the damping effect is achieved. At the same time, the piston rod extrudes the gas inside the piston cylinder, so that the extruded gas will also buffer the column to achieve the purpose of damping;
[0017] 2. By consuming the pressure absorbed by the first pressure spring and the pressure absorbed by the second pressure spring, the first pressure spring buffers the column. Since the connecting plate will push the hinge seat to extrude the second pressure spring during the extrusion of the first pressure spring, the pressure absorbed by the first pressure spring will consume the pressure received by the second pressure spring to prevent the first pressure spring from rebounding, and at the same time buffer the column, further improving the damping effect of the coal mining machine body. Description of the Drawings
[0018] To more clearly illustrate the specific embodiments of the present utility model or the technical solutions in the prior art, the following will briefly introduce the drawings required for use in the description of the specific embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.
[0019] Figure 1 It is the overall structure view of the present utility model;
[0020] Figure 2 It is the schematic semi-sectional structure view of the present utility model;
[0021] Figure 3 It is the schematic semi-sectional structure view of the base of the present utility model;
[0022] Figure 4 It is the structure view of the column of the present utility model;
[0023] Figure 5 It is the schematic semi-sectional structure view of the piston cylinder of the present utility model.
[0024] Explanation of reference numerals:
[0025] 1. Coal shearer body; 2. Column; 3. Shock-absorbing component; 31. Base; 32. Fixed rod; 33. Piston rod; 34. Piston cylinder; 35. Air outlet hole; 36. Rubber plate; 37. Filter screen; 4. Buffer component; 41. First pressure spring; 42. Connecting rod; 43. Hinge seat; 44. Slide groove; 45. Slide block; 46. Second pressure spring. Specific embodiments
[0026] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model with reference to the drawings in the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, rather than all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present utility model.
[0027] The present utility model provides a technical solution:
[0028] Please refer to Figures 1 to 5 , a shock-absorbing device for a coal shearer in a coal mine, including a coal shearer body 1 and columns 2 fixedly connected to the lower side of the coal shearer body 1, and the number of columns 2 is multiple. A shock-absorbing component 3 is provided below the coal shearer body 1; the shock-absorbing component 3 includes a base 31 sleeved outside the column 2;
[0029] The bottom ends of multiple columns 2 are fixedly connected with fixing rods 32, and the number of fixing rods 32 on the lower side of the columns 2 is multiple. The bottom ends of the multiple fixing rods 32 are movably lapped on the lower inner side of the base 31. The bottom ends of the multiple columns 2 are fixedly connected with piston rods 33. The lower inner sides of the multiple bases 31 are fixedly connected with piston cylinders 34. The multiple piston rods 33 are respectively slidably connected in the multiple piston cylinders 34. Air outlet holes 35 are formed in the lower sides of the multiple bases 31.
[0030] The multiple air outlet holes 35 are respectively communicated with the multiple piston cylinders 34, and the inner cavity size of the piston cylinder 34 is larger than the inner cavity size of the air outlet hole 35.
[0031] Rubber plates 36 are fixedly connected to the lower sides of the multiple bases 31, and filter nets 37 are fixedly installed inside the multiple air outlet holes 35.
[0032] By adopting the above technical solution, first, after the shearer body 1 generates vibration during operation, the column 2 below the shearer body 1 moves inside the base 31. At this time, since the piston rod 33 below the column 2 is inside the piston cylinder 34 inside the base 31, and the air outlet hole 35 below the base 31 is smaller than the piston cylinder 34, after the movable rod moves downward, the gas inside the piston cylinder 34 will slowly be discharged from the air outlet hole 35. After the piston rod 33 moves upward, the gas inhaled into the piston cylinder 34 from the air outlet hole 35 will pass through the filter net 37 inside the air outlet hole 35, and the gas will be filtered by the filter net 37. The rubber ring below the base 31 will also absorb the force received by the base 31. At the same time, the fixing rod 32 below the column 2 will also contact the inside of the base 31. Since the rubber plate 36 provided below the base 31 can change the vibration transmission path through its own elasticity, the shock absorption effect is achieved. At the same time, the piston rod 33 squeezes the gas inside the piston cylinder 34, so that the compressed gas will also buffer the column 2 to achieve the purpose of shock absorption.
[0033] Specifically, as Figures 3 to 5 shown, buffer components 4 are provided inside the multiple bases 31. The buffer components 4 include multiple first pressure springs 41 sleeved outside the multiple fixing rods 32.
[0034] The top ends of the first pressure springs 41 are lapped on the bottom ends of the columns 2, and the bottom ends of the first pressure springs 41 are lapped on the lower inner side of the base 31.
[0035] Two connecting rods 42 are hinged to both sides inside the base 31, and the number of connecting rods 42 inside the base 31 is two. The other ends of the connecting rods 42 are hinged with hinge seats 43, and the hinge seats 43 are slidably lapped on the lower inner side of the base 31.
[0036] A chute 44 is provided on the lower side inside the base 31, and the number of the chutes 44 is four. A slider 45 is slidably connected inside each of the four chutes 44, and the upper side of the slider 45 is fixedly connected to the lower side of the hinge seat 43.
[0037] The opposite surfaces of the two corresponding hinge seats 43 are fixedly connected with the same second pressure spring 46, and the two second pressure springs 46 inside the same base 31 are located on the front and rear sides of the piston cylinder 34.
[0038] By adopting the above technical solution, first, since the first pressure spring 41 is located outside the fixed rod 32, when the column 2 moves downward, the first pressure spring 41 will be compressed. At the same time, during the downward movement of the column 2, the column 2 will also compress the connecting rod 42. The connecting rod 42 is hinged to the column 2, and the other end is hinged to the hinge seat 43. When the connecting rod 42 is compressed, the connecting rod 42 will push the hinge seat 43, causing the slider 45 below the hinge seat 43 to slide in the chute 44 inside the base 31. After the two corresponding hinge seats 43 are pushed, the second pressure spring 46 between them will be compressed. Since the connecting plate will push the hinge seat 43 to compress the second pressure spring 46 during the compression of the first pressure spring 41, the pressure absorbed by the first pressure spring 41 will be consumed by the pressure received by the second pressure spring 46, so as to prevent the first pressure spring 41 from rebounding and buffer the column 2 at the same time, further improving the shock absorption effect of the shearer body 1.
[0039] Working principle: First, after the shearer body 1 generates vibration during operation, the piston rod 33 below the column 2 is inside the piston cylinder 34 inside the base 31. Since the air outlet 35 below the base 31 is smaller than the piston cylinder 34, after the movable rod moves downward, the gas inside the piston cylinder 34 will slowly discharge from the air outlet 35. After the piston rod 33 moves upward, the gas inhaled into the piston cylinder 34 from the air outlet 35 will pass through the filter screen 37 inside the air outlet 35, and the gas will be filtered by the filter screen 37. The rubber ring below the base 31 will also absorb the force received by the base 31. Since the first pressure spring 41 is located outside the fixed rod 32, when the column 2 moves downward, the first pressure spring 41 will be compressed. At the same time, the column 2 will also compress the connecting rod 42. The connecting rod 42 is hinged to the column 2, and the other end is hinged to the hinge seat 43. When the connecting rod 42 is compressed, the connecting rod 42 will push the hinge seat 43, causing the slider 45 below the hinge seat 43 to slide in the chute 44 inside the base 31. After the two corresponding hinge seats 43 are pushed, the second pressure spring 46 between them will be compressed.
[0040] Finally, 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 foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.
Claims
1. A shock absorbing device for a coal mining machine for a coal mine, comprising a coal mining machine body (1) and a column (2) fixedly connected to the lower side of the coal mining machine body (1), wherein the number of the columns (2) is multiple, and the characteristics are: A shock absorbing component (3) is provided below the coal mining machine body (1); the shock absorbing component (3) comprises a base (31) sleeved on the outside of the column (2); The bottom ends of the plurality of columns (2) are fixedly connected to fixed rods (32), and the number of fixed rods (32) on the lower side of the columns (2) is multiple. The bottom ends of the plurality of fixed rods (32) are moved and overlapped on the inner lower side of the base (31). The bottom ends of the plurality of columns (2) are fixedly connected to piston rods (33). The inner lower sides of the plurality of bases (31) are fixedly connected to piston cylinders (34). The plurality of piston rods (33) are slidably connected in the plurality of piston cylinders (34) respectively. The lower sides of the plurality of bases (31) are provided with air outlet holes (35).
2. A shock absorbing device for a coal mining machine according to claim 1, characterized in that: The plurality of air outlet holes (35) are respectively connected to the plurality of piston cylinders (34), and the inner cavity size of the piston cylinder (34) is larger than the inner cavity size of the air outlet holes (35).
3. A shock absorbing device for a coal mining machine according to claim 1, characterized in that: The lower sides of the plurality of bases (31) are all fixedly connected with rubber plates (36), and the interiors of the plurality of air outlet holes (35) are all fixedly installed with filter screens (37).
4. A shock absorbing device for a coal mining machine according to claim 1, characterized in that: A buffer component (4) is provided inside each of the plurality of bases (31), and the buffer component (4) comprises a plurality of first pressure springs (41) sleeved on the outside of the plurality of fixing rods (32).
5. A shock absorbing device for a coal mining machine according to claim 4, characterized in that: The top end of the first pressure spring (41) is overlapped on the bottom end of the column (2), and the bottom end of the first pressure spring (41) is overlapped on the inner lower side of the base (31).
6. A shock absorbing device for a coal mining machine according to claim 1, characterized in that: Connecting rods (42) are hinged on both sides of the base (31), and the number of connecting rods (42) inside the base (31) is two. The other end of the connecting rod (42) is hinged on a hinge seat (43), and the hinge seat (43) is slidably overlapped on the inner lower side of the base (31).
7. A shock absorbing device for a coal mining machine according to claim 6, characterized in that: A slide groove (44) is provided on the lower inner side of the base (31), and the number of the slide grooves (44) is four. Slide blocks (45) are slidably connected inside the four slide grooves (44), and the upper side of the slide block (45) is fixedly connected to the lower side of the hinge seat (43).
8. A shock absorbing device for a coal mining machine according to claim 7, characterized in that: The corresponding opposite surfaces of the two hinge seats (43) are fixedly connected with a second pressure spring (46), and the two second pressure springs (46) inside the same base (31) are located at the front and rear sides of the piston cylinder (34).