Belt conveyor damping device for ultra-thin coal seam

Abstract

The utility model discloses a belt conveyor damping device for an ultra-thin coal seam. The belt conveyor damping device comprises a damping unit and a supporting base. The damping unit comprises the belt conveyor supporting plate, the double-end connecting stud, the first spring, the spring supporting plate and the damping supporting column, a multi-stage damping structure is adopted, varied transportation conditions and vibration frequencies are adapted, higher adaptability and flexibility are shown, the damping unit is easy and convenient to install, the maintenance cost is low, and the service life of the damping unit is prolonged. And the device can adapt to working environments of various ultra-thin coal seams. According to the device, the material loss is obviously reduced, the energy consumption is reduced, the working efficiency and the safety of the belt conveyor are improved, and an extremely high practical value is displayed; the lower portion of the middle supporting frame is connected with a rod type hydraulic damping shock absorber, vibration and noise generated when a machine operates can be reduced, the working environment is improved, the service life of equipment is prolonged, the stability of a conveying belt is improved, and loss of materials in the conveying process and environmental pollution are reduced.

Description

Technical Field

[0001] This utility model relates to a shock absorption device, specifically a shock absorption device for a belt conveyor in an extremely thin coal seam, belonging to the field of coal mining technology. Background Technology

[0002] The main technical problems addressed by belt conveyor vibration damping devices include reducing vibration and noise during machine operation to improve the working environment and extend equipment life; improving conveyor belt stability and preventing deviation caused by uneven loads or uneven paths; reducing material loss and environmental pollution during conveying; extending the service life of equipment components by enhancing their damping effect; improving operational safety and reducing structural loosening caused by vibration; adapting to different working environments to ensure effective operation under various conditions; and designing vibration damping devices that are easy to install and maintain to reduce maintenance costs and downtime. These solutions collectively improve the performance and reliability of belt conveyors while providing operators with a safer and more efficient working environment. In the mining of extremely thin coal seams, due to the low coal seam height, traditional belt conveyors cannot adapt to this special working environment. It is necessary to reduce the height of the conveyor and coal mining machine to accommodate the "three-machine" matching and automated mining of extremely thin coal seam working faces. During the mining of extremely thin coal seams, due to the large ground undulations, traditional belt conveyors generate strong vibrations during operation, causing equipment parts to easily fall off, resulting in equipment damage, increasing the failure rate, and reducing service life.

[0003] Due to their thin-walled design, thin-seam coal mining machines are small in size and weight, but they are subject to significant vibrations during coal cutting. Without appropriate vibration-resistant measures, many hardware systems will suffer varying degrees of damage from these vibrations. The high vibrations during coal cutting can easily damage electrical components; the reliability, stability, and anti-interference capabilities of various high-precision sensors need further improvement to reduce maintenance. Belt vibrations in belt conveyors can cause blurring of images of belt tears and cracks detected by machine vision. This vibration not only affects detection results but can also lead to equipment damage and increased maintenance costs. (The text repeats itself here.)

[0004] In the prior art, such as the vibration damping device for a belt conveyor disclosed in CN210635280U, a fixed plate is included. Several rows of opposing fixed frames are fixed on both sides of the upper surface of the fixed plate. Two fixed seats, arranged in the same row as the fixed frames, are fixed on the upper surface of the fixed plate. A bent portion is provided at the top of the fixed frame, and a first sliding groove extending to the top is opened on the inner surface of the bent portion. A first top cover plate is fixed at the top of the fixed frame. By setting side guide rollers and a middle guide roller between the fixed seats and the fixed frames, with the guide rollers mounted on a slider, and vibration damping springs between the slider and the fixed seats and fixed frames, vibration damping protection at different angles can be provided for the guide rollers and the conveyor belt. This overcomes the lateral and longitudinal fluctuations of the conveyor belt and improves the operational stability of the equipment. However, the prior art cannot adapt to varying transportation conditions and vibration frequencies, meaning it has poor adaptability and flexibility, and cannot adapt to various extremely thin coal seam working environments, resulting in low practical value. Utility Model Content

[0005] The purpose of this invention is to provide a shock-absorbing device for belt conveyors in extremely thin coal seams in order to solve at least one of the above-mentioned technical problems.

[0006] The present invention achieves the above objectives through the following technical solution: a shock-absorbing device for a belt conveyor in an extremely thin coal seam, comprising a shock-absorbing unit and a support base, wherein the top of the belt conveyor support plate is in contact with the external belt conveyor, the shock-absorbing units are respectively connected to both ends of the support base, and an intermediate support frame is connected between the two shock-absorbing units.

[0007] The shock absorption unit includes a belt conveyor support plate, a double-ended connecting stud, a first spring, a spring support plate, and a shock absorption support column. The shock absorption support column is vertically connected to the support base. Both ends of the belt conveyor support plate and the spring support plate are sleeved on the column body of the shock absorption support column. The belt conveyor support plate is located above the spring support plate. The first spring is movably sleeved on the column body of the shock absorption support column, and the first spring and the shock absorption support column are coaxially fitted. The two ends of the first spring respectively abut against the belt conveyor support plate and the spring support plate. The double-ended connecting stud is connected through the middle part of the belt conveyor support plate and the spring support plate, and the two ends of the double-ended connecting stud are threaded with connecting nuts.

[0008] A rod-type hydraulic damping shock absorber is connected to the lower part of the intermediate support frame. The upper end of the rod-type hydraulic damping shock absorber is connected to the middle frame body of the intermediate support frame by connecting bolts, and the bottom end of the rod-type hydraulic damping shock absorber is connected to the support base.

[0009] As a further embodiment of this utility model: the two ends of the belt conveyor support plate are provided with shock-absorbing support column connection holes, the belt conveyor support plate is sleeved on the shock-absorbing support column body through the provided shock-absorbing support column connection holes, and a first fastening pin hole is provided at the disconnection part of the shock-absorbing support column connection hole, the first fastening pin hole is connected to the fastening pin.

[0010] As a further improvement of this utility model: a first double-headed connecting stud connection hole is provided through the middle part of the belt conveyor support plate, and a number of first grooves are provided on the belt conveyor support plate.

[0011] As a further embodiment of this utility model: the double-ended connecting stud includes a double-ended connecting rod and a double-ended connecting stud thread, with the double-ended connecting stud thread formed on both ends of the double-ended connecting rod.

[0012] As a further embodiment of this utility model: the two ends of the spring support plate are provided with shock-absorbing support frame connection holes, the spring support plate is sleeved on the shock-absorbing support column through the provided shock-absorbing support frame connection holes, and a second fastening pin hole is provided at the disconnection part of the shock-absorbing support frame connection hole, the second fastening pin hole is connected to the fastening pin.

[0013] As a further improvement of this utility model: a second double-headed connecting stud connection hole is provided through the middle part of the spring support plate, and several second grooves are provided on the body of the belt conveyor support plate.

[0014] As a further improvement of this utility model: the intermediate support frame has intermediate support frame connection holes at both ends, the intermediate support frame connection holes are coaxially engaged with the double-headed connecting studs, and the intermediate support frame and the spring support plate are connected by the double-headed connecting studs passing through the intermediate support frame connection holes.

[0015] As a further embodiment of this utility model: a connecting base is fixedly connected to the middle part of the frame of the intermediate support frame, a connecting base connecting hole is opened on the connecting base, a connecting bolt is fitted into the connecting base connecting hole, and the connecting base is connected to the upper end of the rod-type hydraulic damping shock absorber through the connecting bolt.

[0016] As a further embodiment of this utility model: the rod-type hydraulic damping shock absorber includes a damper housing and a movable inner rod. The lower end of the movable inner rod is movably inserted into the damper housing, the upper end of the movable inner rod has a connecting hole, a second spring is sleeved on the rod body of the movable inner rod, and the bottom end of the damper housing has an oil outlet.

[0017] The beneficial effects of this utility model are:

[0018] 1. The vibration damping unit of this utility model includes a belt conveyor support plate, a double-ended connecting stud, a first spring, a spring support plate, and a vibration damping support column. It adopts a multi-stage vibration damping structure, capable of adapting to varying transportation conditions and vibration frequencies. Compared with traditional vibration damping devices, it exhibits higher adaptability and flexibility. The vibration damping unit is easy to install, has low maintenance costs, and can adapt to various working environments with extremely thin coal seams. This device not only significantly reduces material loss but also reduces energy consumption, improves the working efficiency and safety of the belt conveyor, demonstrating extremely high practical value.

[0019] 2. The intermediate support frame of this utility model is connected to a rod-type hydraulic damping shock absorber below, which can reduce the vibration and noise during machine operation, thereby improving the working environment and extending the equipment life, improving the stability of the conveyor belt, and reducing material loss and environmental pollution during the conveying process.

[0020] 3. This invention adapts to different working environments, ensuring effective operation under various conditions; and features an easy-to-install and maintain shock-absorbing device to reduce maintenance costs and downtime. These solutions collectively improve the performance and reliability of belt conveyors while providing operators with a safer and more efficient working environment. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0022] Figure 2 This is a schematic diagram of the support plate structure for the belt conveyor of this utility model;

[0023] Figure 3 This is a schematic diagram of the double-headed connecting stud structure of this utility model;

[0024] Figure 4 This is a schematic diagram of the spring support plate structure of this utility model;

[0025] Figure 5 This is a schematic diagram of the intermediate support frame structure of this utility model;

[0026] Figure 6 This is a schematic diagram of the rod-type hydraulic damping shock absorber of this utility model.

[0027] In the diagram: 1. Belt conveyor support plate; 101. Shock-absorbing support column connection hole; 102. First groove; 103. First double-ended connecting stud connection hole; 104. First fastening pin hole; 2. Double-ended connecting stud; 201. Double-ended connecting screw; 202. Double-ended connecting stud thread; 3. First spring; 4. Spring support plate; 401. Shock-absorbing support frame connection hole; 402. Second groove; 403. Second double-ended connecting stud connection hole; 404. Second fastening pin hole; 5. Connecting nut; 6. Intermediate support frame; 601. Intermediate support frame connection hole; 602. Connecting base; 6021. Connecting base connection hole; 7. Connecting bolt; 8. Rod-type hydraulic damping shock absorber; 801. Connecting hole; 802. Second spring; 803. Damper housing; 804. Oil outlet; 9. Shock-absorbing support column; 10. Support base. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not 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 effort are within the protection scope of the present utility model.

[0029] Example 1, as Figures 1 to 6 As shown, a vibration damping device for a belt conveyor in an extremely thin coal seam includes a vibration damping unit and a support base 10. The top of the belt conveyor support plate 1 is in contact with the external belt conveyor. The vibration damping units are respectively connected to both ends of the support base 10, and an intermediate support frame 6 is connected between the two vibration damping units.

[0030] The shock absorption unit includes a belt conveyor support plate 1, a double-ended connecting stud 2, a first spring 3, a spring support plate 4, and a shock absorption support column 9. The shock absorption support column 9 is vertically connected to the support base 10. Both ends of the belt conveyor support plate 1 and the spring support plate 4 are sleeved on the column body of the shock absorption support column 9. The belt conveyor support plate 1 is located above the spring support plate 4. The first spring 3 is movably sleeved on the column body of the shock absorption support column 9, and the first spring 3 and the shock absorption support column 9 are coaxially aligned. Both ends of the first spring 3 abut against the belt conveyor support plate 1 and the spring support plate 4, respectively. The double-ended connecting stud 2 is connected through the middle part of the belt conveyor support plate 1 and the spring support plate 4, and both ends of the double-ended connecting stud 2 are threaded with connecting nuts 5.

[0031] A rod-type hydraulic damping shock absorber 8 is connected to the lower part of the intermediate support frame 6. The upper end of the rod-type hydraulic damping shock absorber 8 is connected to the middle frame body of the intermediate support frame 6 by a connecting bolt 7. The bottom end of the rod-type hydraulic damping shock absorber 8 is connected to the support base 10.

[0032] Example 2: In addition to all the technical features in Example 1, this example also includes: shock-absorbing support column connection holes 101 are provided through both ends of the belt conveyor support plate 1. The belt conveyor support plate 1 is sleeved on the body of the shock-absorbing support column 9 through the shock-absorbing support column connection holes 101. A first fastening pin hole 104 is provided at the disconnection part of the shock-absorbing support column connection hole 101. The first fastening pin hole 104 is connected to the fastening pin. By tightening the fastening pin, the shock-absorbing support column connection hole 101 is firmly sleeved and fixed on the body of the shock-absorbing support column 9, thereby ensuring that the belt conveyor support plate 1 is fully fixed on the shock-absorbing support column 9.

[0033] The belt conveyor support plate 1 has a first double-ended connecting stud connection hole 103 through the middle part of the plate body, and several first grooves 102 are opened on the plate body of the belt conveyor support plate 1. The first double-ended connecting stud connection hole 103 facilitates the passage of double-ended connecting studs 2, so that the belt conveyor support plate 1 can be combined and connected with the double-ended connecting studs 2. The first grooves 102 are suitable for the assembly of the belt conveyor support plate 1, saving materials without affecting its function and strength.

[0034] The double-ended connecting stud 2 includes a double-ended connecting screw 201 and a double-ended connecting stud thread 202. The double-ended connecting stud thread 202 is formed on both ends of the double-ended connecting screw 201 so that it can be threadedly connected to the connecting nut 5, thereby enabling the double-ended connecting screw 201 to be firmly supported and connected between the belt conveyor support plate 1 and the spring support plate 4.

[0035] In Example 3, in addition to all the technical features in Example 1, this example also includes: the spring support plate 4 has shock-absorbing support frame connection holes 401 through both ends, the spring support plate 4 is sleeved on the shock-absorbing support column 9 through the shock-absorbing support frame connection holes 401, the disconnected part of the shock-absorbing support frame connection hole 401 is provided with a second fastening pin hole 404, the second fastening pin hole 404 is connected with a fastening pin, and by tightening the fastening pin, the shock-absorbing support frame connection hole 401 is firmly sleeved and fixed on the shock-absorbing support column 9, thereby ensuring that the spring support plate 4 is fully fixed on the shock-absorbing support column 9.

[0036] The spring support plate 4 has a second double-ended connecting stud connection hole 403 through the middle part of its body, and the belt conveyor support plate 1 has several second grooves 402. The second double-ended connecting stud connection hole 403 facilitates the passage of the double-ended connecting stud 2, so that the belt conveyor support plate 1 can be combined and connected with the double-ended connecting stud 2. The second grooves 402 are suitable for the assembly of the spring support plate 4, saving materials without affecting its function and strength.

[0037] The intermediate support frame 6 has intermediate support frame connection holes 601 at both ends. The intermediate support frame connection holes 601 are coaxially engaged with the double-ended connecting studs 2. The intermediate support frame 6 and the spring support plate 4 are connected by the double-ended connecting studs 2 passing through the intermediate support frame connection holes 601. The damping units on both sides are combined together through the intermediate support frame 6, which can improve the overall structural stability of the damping device and achieve a better damping effect.

[0038] A connecting base 602 is fixedly connected to the middle part of the frame of the intermediate support frame 6. A connecting base connecting hole 6021 is opened on the connecting base 602. A connecting bolt 7 is fitted into the connecting base connecting hole 6021. The connecting base 602 is connected to the upper end of the rod-type hydraulic damping shock absorber 8 through the connecting bolt 7.

[0039] The rod-type hydraulic damping shock absorber 8 includes a damper housing 803 and a movable inner rod. The lower end of the movable inner rod is movably inserted into the damper housing 803. The upper end of the movable inner rod has a connecting hole 801. A second spring 802 is sleeved on the rod body of the movable inner rod. The bottom end of the damper housing 803 has an oil outlet 804.

[0040] Through the contact between the belt conveyor support plate 1 and the first spring 3, the coaxial cooperation between the first spring 3 and the shock-absorbing support column 9, and the belt conveyor support plate 1 being fitted onto the shock-absorbing support column 9 through the opening shock-absorbing support column connection hole 101, and the spring support plate 4 being fitted onto the shock-absorbing support column 9 through the opening shock-absorbing support frame connection hole 401, the stability and flexibility of the structure are ensured to adapt to different installation requirements. The threaded design of the double-ended connecting stud 2 allows it to be connected with the connecting nut 5, realizing the bolt fixation of the intermediate support frame 6 to the belt conveyor support plate 1 and the spring support plate 4. In addition, the connecting base 602 on the intermediate support frame 6 is connected to the rod-type hydraulic damping shock absorber 8 by bolts, providing an effective shock absorption effect for the belt conveyor.

[0041] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0042] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A vibration damping device for a belt conveyor in extremely thin coal seams, comprising a vibration damping unit and a support base (10), characterized in that: The top of the belt conveyor support plate (1) is in contact with the external belt conveyor. The shock absorption units are respectively connected to both ends of the support base (10), and an intermediate support frame (6) is connected between the two shock absorption units. The shock absorption unit includes a belt conveyor support plate (1), a double-ended connecting stud (2), a first spring (3), a spring support plate (4), and a shock absorption support column (9). The shock absorption support column (9) is vertically connected to the support base (10). Both ends of the belt conveyor support plate (1) and the spring support plate (4) are sleeved on the column body of the shock absorption support column (9). The belt conveyor support plate (1) is located above the spring support plate (4). The first spring (3) is movably sleeved on the column body of the shock absorption support column (9), and the first spring (3) and the shock absorption support column (9) are coaxially aligned. Both ends of the first spring (3) abut against the belt conveyor support plate (1) and the spring support plate (4), respectively. The double-ended connecting stud (2) is connected through the middle part of the belt conveyor support plate (1) and the spring support plate (4), and both ends of the double-ended connecting stud (2) are threaded with connecting nuts (5). A rod-type hydraulic damping shock absorber (8) is connected to the lower part of the intermediate support frame (6). The upper end of the rod-type hydraulic damping shock absorber (8) is connected to the middle frame of the intermediate support frame (6) by a connecting bolt (7). The bottom end of the rod-type hydraulic damping shock absorber (8) is connected to the support base (10).

2. The belt conveyor vibration damping device according to claim 1, characterized in that: The belt conveyor support plate (1) has shock-absorbing support column connection holes (101) through both ends. The belt conveyor support plate (1) is sleeved on the shock-absorbing support column (9) through the shock-absorbing support column connection holes (101). A first fastening pin hole (104) is provided at the disconnection part of the shock-absorbing support column connection hole (101). The first fastening pin hole (104) is connected to the fastening pin.

3. The vibration damping device for a belt conveyor according to claim 1, characterized in that: The belt conveyor support plate (1) has a first double-headed connecting stud connection hole (103) through the middle part of the plate body, and a number of first grooves (102) are opened on the plate body of the belt conveyor support plate (1).

4. The vibration damping device for a belt conveyor according to claim 1, characterized in that: The double-ended connecting stud (2) includes a double-ended connecting screw (201) and a double-ended connecting stud thread (202), wherein the double-ended connecting stud thread (202) is formed on both ends of the double-ended connecting screw (201).

5. The vibration damping device for a belt conveyor according to claim 1, characterized in that: The spring support plate (4) has shock-absorbing support frame connection holes (401) through both ends. The spring support plate (4) is sleeved on the shock-absorbing support column (9) through the shock-absorbing support frame connection holes (401). A second fastening pin hole (404) is provided at the disconnection part of the shock-absorbing support frame connection hole (401). The second fastening pin hole (404) is connected to the fastening pin.

6. The vibration damping device for a belt conveyor according to claim 5, characterized in that: The spring support plate (4) has a second double-headed connecting stud connection hole (403) through the middle part of the plate body, and the belt conveyor support plate (1) has a number of second grooves (402) on the plate body.

7. The vibration damping device for a belt conveyor according to claim 1, characterized in that: The intermediate support frame (6) has intermediate support frame connection holes (601) at both ends. The intermediate support frame connection holes (601) are coaxially engaged with the double-headed connecting studs (2). The intermediate support frame (6) and the spring support plate (4) are connected through the double-headed connecting studs (2) passing through the intermediate support frame connection holes (601).

8. The vibration damping device for a belt conveyor according to claim 7, characterized in that: The middle part of the frame of the intermediate support frame (6) is fixedly connected to the connecting base (602). The connecting base (602) has a connecting hole (6021). A connecting bolt (7) is fitted into the connecting hole (6021). The connecting base (602) is connected to the upper end of the rod-type hydraulic damping shock absorber (8) through the connecting bolt (7).

9. The vibration damping device for a belt conveyor according to claim 1, characterized in that: The rod-type hydraulic damping shock absorber (8) includes a damper housing (803) and a movable inner rod. The lower end of the movable inner rod is movably inserted into the damper housing (803). The upper end of the movable inner rod is provided with a connecting hole (801). A second spring (802) is sleeved on the rod body of the movable inner rod. The bottom end of the damper housing (803) is provided with an oil outlet (804).

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