Telescopic device for fully-mechanized mining belt conveyor and telescopic machine body

Abstract

The utility model belongs to the field of underground mining equipment, and relates to a telescopic device and a telescopic machine body for a fully-mechanized coal mining belt conveyor, the telescopic device comprises a telescopic device, a plurality of telescopic machine body frames, a traction device, a self-moving machine tail and the fully-mechanized coal mining belt conveyor, and two adjacent telescopic machine body frames are connected through the telescopic device; the telescopic machine body frame located on the leftmost side is connected with a traction device, and the telescopic machine body frame located on the rightmost side is connected with a fully-mechanized coal mining belt conveyor. The telescopic machine body frame and the traction device are located between the self-moving machine tail and the fully-mechanized coal mining belt conveyor. After the structure is adopted, the telescopic device has the beneficial effects that the telescopic action is completed by adopting linear sliding friction, the stability is better, the overall rigidity is stronger, and heavy load and impact load can be better borne. The telescopic machine body frame adopts a walking roller, so that the bearing capacity is higher, the walking is more stable, the telescopic machine body frame is more suitable for underground complex roadway ground, and the equipment inclination risk is greatly reduced.

Description

Technical Field

[0001] This utility model belongs to the technical field of underground mining equipment, specifically, it relates to a telescopic device and telescopic body for a fully mechanized mining belt conveyor. Background Technology

[0002] With the rapid development of intelligent mining technology in my country's coal mines, underground roadway layouts are becoming increasingly complex and variable. Traditional fully mechanized conveyor belts require frequent shutdowns and disassembly / reassembly when facing face advancement and roadway contraction, resulting in low production efficiency, high labor costs, and safety hazards. Against this backdrop, the development of telescopic conveyor belt technology with rapid adaptive adjustment capabilities has become an urgent need.

[0003] However, while existing articulated telescopic conveyor systems can extend or shorten the conveyor body, they still have some drawbacks in practical use. The articulated telescopic structure consists of multiple cross-hinged booms, resulting in numerous movable hinge points. Dust, mud, and other debris can easily enter these hinge points, accelerating wear or corrosion, leading to deformation or jamming of the hinged booms. This can cause the telescopic conveyor body to veer off course, become stuck, or even tip over. Furthermore, the articulated telescopic structure has relatively low mechanical strength and rigidity. Under prolonged heavy loads or impact loads, it can also cause deformation, sagging, pin breakage, or body misalignment of the hinged booms. Therefore, improvements are necessary. Utility Model Content

[0004] In order to solve the above-mentioned problems of the prior art, the present invention provides a telescopic device and telescopic body for a fully mechanized mining belt conveyor.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] As a first aspect of this utility model, a telescopic device for a fully mechanized mining belt conveyor is proposed, comprising: a cylinder and a telescopic rod, one end of the telescopic rod being movably inserted into the cylinder; a guide block is connected to the end of the telescopic rod located inside the cylinder, and the outer surface of the guide block is adapted to the inner wall of the cylinder;

[0007] The cylinder has openings at both ends; one end of the cylinder is connected to a cylinder cap; the other end of the cylinder is connected to a cylinder end cap.

[0008] The telescopic rod is a hollow rod; one end of the telescopic rod moves through the mounting hole of the cylinder end cover and is located inside the cylinder; the other end of the telescopic rod is connected to a telescopic rod cover.

[0009] According to this utility model, one or more guide rings are connected to the outer surface of the guide block.

[0010] According to this utility model, the telescopic rod has one or more vent holes, which are located inside the cylinder.

[0011] According to this utility model, a second connecting lug is connected to the telescopic rod cover; a first connecting lug is welded to the cylinder cover.

[0012] According to this utility model, a guide copper sleeve is connected to the inner side of the cylinder end cover; one end of the telescopic rod moves sequentially through the mounting through hole of the cylinder end cover and the guide copper sleeve.

[0013] According to this utility model, the inner wall of the mounting through hole of the cylinder end cover is provided with felt and an O-ring.

[0014] As a second aspect of this utility model, a telescopic frame is proposed, which includes a telescopic device for a fully mechanized mining conveyor as described above, multiple telescopic frame frames, a traction device, a self-moving tail section, and a fully mechanized mining conveyor. Adjacent telescopic frame frames are connected by the telescopic device. The leftmost telescopic frame frame is connected to the traction device, and the rightmost telescopic frame frame is connected to the fully mechanized mining conveyor. The telescopic frame frames and the traction device are located between the self-moving tail section and the fully mechanized mining conveyor.

[0015] According to this utility model, the telescopic frame includes a frame support, on which a first upper roller group and a first lower roller group are connected; vertical rollers are also connected to the left and right sides of the frame support; telescopic device connecting plates are connected to the left and right sides of the frame support; the two sides of the telescopic device connecting plates are respectively hinged to the corresponding first connecting lugs and second connecting lugs of the telescopic device via pins; and a traveling roller is rotatably connected to the bottom of the frame support.

[0016] According to this utility model, the traction device includes a traveling mechanism; a support frame is connected to the traveling mechanism, and a second upper roller group and a second lower roller group are connected to the support frame; a connecting rod is connected to one side of the support frame, and the connecting rod is connected to the telescopic frame located on the far left.

[0017] According to this utility model, it also includes a transition connecting frame, the left side of which is connected to the telescopic device connecting plate of the telescopic body frame located on the far right, and the right side of which is connected to the fixed body of the fully mechanized mining belt conveyor.

[0018] The advantages of this utility model for a telescopic device and telescopic body for a fully mechanized mining belt conveyor are specifically reflected in the following aspects: The telescopic device uses linear sliding friction to complete the telescopic action, resulting in better stability, stronger overall rigidity, and better ability to withstand heavy loads and impact loads. The telescopic body frame uses traveling rollers, which have a stronger load-bearing capacity, more stable movement, and are more suitable for complex underground roadway surfaces, while greatly reducing the risk of equipment tilting. The telescopic body and the self-propelled tail section operate independently without connection, greatly reducing the complexity of the telescopic body design and on-site installation. Attached Figure Description

[0019] The accompanying drawings, which form part of this application, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention.

[0020] Figure 1 This is a schematic diagram of the telescopic device for a fully mechanized mining belt conveyor according to the present invention.

[0021] Figure 2 This is a structural schematic diagram of the telescopic frame of this utility model;

[0022] Figure 3 This is a schematic diagram of the traction device of this utility model;

[0023] Figure 4 This is a schematic diagram of the telescopic body of this utility model. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below in conjunction with specific embodiments and corresponding drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0025] One embodiment of this application provides a telescopic device for a fully mechanized mining belt conveyor, such as... Figure 1 As shown, it includes: a cylinder 103 and a telescopic rod 108, one end of which is movably inserted into the cylinder 103; a guide block 109 is welded to the end of the telescopic rod 108 inside the cylinder 103, the outer surface of the guide block 109 being adapted to the inner wall of the cylinder 103; the guide block 109 has a preset length; the telescopic rod 108 is a hollow rod; a telescopic rod cover 111 is welded to the other end of the telescopic rod 109; a second connector for easy connection is welded to the telescopic rod cover 111. Ear plate 112; one or more guide rings 110 are connected to the outer surface of the guide block 109. When there are two or more guide rings 110, the multiple guide rings 110 are spaced apart; the guide block 109 is machined with grooves for installing the guide rings 110; the linear sliding friction between the guide rings 110 and the inner wall of the cylinder 103 realizes the telescopic action between the telescopic rod 108 and the cylinder 103. The guide rings 110 also play a guiding and supporting role in the telescopic action of the telescopic rod 108, and the guide rings 110 also play a limiting role.

[0026] The telescopic rod 108 has one or more vent holes 113, which are located inside the cylinder 103 to maintain the air pressure balance inside the cylinder 103 during the telescopic process; the vent holes 113 are located on the right side of the guide block 109.

[0027] The cylinder 103 has open holes at both ends; a cylinder cover 102 is welded to one end of the cylinder 103 for limiting its position; a cylinder end cap 104 is welded to the other end of the cylinder 103; an installation through hole is provided in the middle of the cylinder end cap 104, and one end of the telescopic rod 108 moves through the installation through hole of the cylinder end cap 104 and is located inside the cylinder 103; a first connecting lug 101 for easy connection is welded to the cylinder cover 102; the non-moving parts of the telescopic device are fixed by welding, resulting in higher overall strength and better fatigue resistance.

[0028] Furthermore, a guide copper sleeve 105 is connected to the inner side of the cylinder end cover 104; one end of the telescopic rod 108 moves through the mounting through hole of the cylinder end cover 104 and the guide copper sleeve 105 in sequence, and the guide copper sleeve 105 plays a guiding and supporting role in the telescopic movement of the telescopic rod 108.

[0029] Furthermore, the inner wall of the mounting through hole of the cylinder end cover 104 is provided with felt 107 and O-ring 106, and the inner wall of the mounting through hole of the cylinder end cover 104 is provided with corresponding grooves for mounting felt 107 and O-ring 106; felt 107 and O-ring 106 are located between telescopic rod 108 and mounting through hole of cylinder end cover 104; felt 107 and O-ring 106 play a role in dust prevention and sealing, which can effectively prevent dust, mud and other debris from entering the interior of cylinder 103 and affecting telescopic movement.

[0030] As described above, the telescopic device in this embodiment employs sliding friction technology, relying on the linear sliding friction between the guide ring on the telescopic rod and the inner wall of the cylinder to complete the telescopic action. Sliding friction provides relatively stable resistance. The precise fit between the inner wall of the cylinder and the guide ring, and between the telescopic rod and the guide sleeve, ensures the smoothness, accuracy, and stability of the telescopic action. The large sliding friction area between the inner wall of the cylinder and the guide ring allows for even load distribution, effectively dispersing impact forces and enabling better resistance to heavy loads and impact loads. The guide ring is made of high-strength, wear-resistant material, maintaining stable performance over long-term operation. Furthermore, the inner wall of the cylinder undergoes precision machining and treatment, resulting in low surface roughness and a stable coefficient of friction, reducing wear between components and the probability of malfunctions, thus improving the reliability and service life of the telescopic device. When the telescopic rod extends to its maximum length, both the guide block and the guide sleeve effectively support the telescopic rod, enhancing the overall rigidity of the telescopic device.

[0031] One embodiment of this application provides a telescopic fuselage, such as... Figures 1-4As shown, it includes: a telescopic device 1 as described above, multiple telescopic machine frames 3, a traction device 4, a self-moving tail section 5, and a fully mechanized mining conveyor belt 6. Adjacent telescopic machine frames 3 are connected by the telescopic device 1. The self-moving tail section 5 and the fully mechanized mining conveyor belt 6 are existing known technologies and will not be described in detail here. The working process between the two is also existing known technology and will not be described in detail here. The telescopic machine frame 3 and the traction device 4 are located between the self-moving tail section 5 and the fully mechanized mining conveyor belt 6.

[0032] The telescopic frame 3 includes a frame support 36, on which a first upper idler roller group 31 and a first lower idler roller group 32 are connected. It should be noted that the structure and position of the first upper idler roller group 31 and the first lower idler roller group 32 are existing known technologies and will not be described in detail here. For example, the first and second idlers disclosed in patent publication number CN220011207U are examples. Vertical rollers 33 are also connected to the left and right sides of the frame support 36. The vertical rollers 33 are located on both sides of the first upper idler roller group 31 and the first lower idler roller group 32, which can prevent the conveyor belt from deviating during operation. Telescopic... The telescopic device connecting plate 34; the two sides of the telescopic device connecting plate 34 are respectively hinged to the corresponding first connecting ear plate 101 and second connecting ear plate 112 of the telescopic device 1 through pins 7; the telescopic device connecting plate 34 plays a lateral limiting role for the first connecting ear plate 101 and the second connecting ear plate 112, which can make the telescopic device horizontally installed and multiple telescopic devices parallel to each other in the lateral direction, which can ensure that the telescopic machine body runs horizontally without bending. The hinge between the telescopic device connecting plate 34 and the first connecting ear plate 101 and the second connecting ear plate 112 can also allow the telescopic device to rotate a certain angle in the vertical direction to adapt to the unevenness and slope of the roadway surface.

[0033] The bottom of the body support frame 36 is rotatably connected to a traveling roller 35. As an example, there are two traveling rollers 35, which are spaced apart. Compared with the rollers of the prior art, the traveling roller has a much larger contact area with the ground, which can effectively distribute the load pressure, making the telescopic body frame stronger in load-bearing capacity, simple in structure, low in failure rate, sturdy in overall structure, strong in impact resistance, and able to roll smoothly over small obstacles (such as gravel). It is durable and not easily deformed by impact or heavy load. Moreover, the wider rolling surface of the traveling roller can provide better stability in rugged terrain, greatly reducing the risk of equipment tilting, and is more suitable for complex underground tunnel surfaces. At the same time, compared with the prior art, since the traveling roller is in direct contact with the ground, no guide rail is needed, which can save costs and make the overall cost of the telescopic body lower.

[0034] The traction device 4 includes a traveling mechanism 41, which is a tracked drive mechanism. The driving component of the tracked drive mechanism is a hydraulic motor, and the traveling component is a tracked chassis, which is existing known technology and will not be described in detail here. A support frame 42 is connected to the traveling mechanism 41, and a second upper idler group 43 and a second lower idler group 44 are connected to the support frame 42. The structure of the second upper idler group 43 is the same as that of the first upper idler group 31, and the structure of the second lower idler group 44 is the same as that of the first lower idler group 32. A connecting rod 45 is connected to one side of the support frame 42. The height of the first upper idler group 31 and the second upper idler group 43 is the same as the height of the upper idler group of the fully mechanized mining belt conveyor 6, and the height of the first lower idler group 32 and the second lower idler group 44 is the same as the height of the lower idler group of the fully mechanized mining belt conveyor 6, so as to ensure the stability of the conveyor belt transporting raw coal.

[0035] It also includes a transition connecting frame 2, the left side of which is connected to the telescopic device connecting plate 34 of the telescopic frame 3 located on the far right, and the right side of which is connected to the fixed body of the fully mechanized mining belt conveyor 6. The transition connecting frame 2 serves as a limit for the last section of the telescopic frame 3.

[0036] During initial installation, the traction device is placed to the right of the self-propelled machine tail, without being connected to the self-propelled machine tail. The traction device is connected to one end of the telescopic device connecting plate of the leftmost telescopic frame via a connecting rod. The other end of the telescopic device connecting plate of the leftmost telescopic frame is connected to the telescopic device. Adjacent telescopic frames are connected to each other via the telescopic device. After several telescopic frames are connected to the telescopic device, the last telescopic frame is connected to the transition connecting frame. The other end of the transition connecting frame is then connected to the fully mechanized mining belt conveyor, thus completing the installation of the telescopic frame.

[0037] It should be noted that the telescopic device is in its longest extended state during initial installation. When the coal mining machine advances along the working face and the self-propelled tail needs to move to the right, the traction device should be driven first to shorten the telescopic body to the length required for the self-propelled tail to travel, and then the self-propelled tail can move to the right.

[0038] After multiple movements of the self-moving tail section, the telescopic machine body is shortened to its shortest state. The transition connecting frame is then removed from the fixed body of the fully mechanized mining conveyor. The removal length must meet the travel requirements of the telescopic machine body.

[0039] Then drive the traction device to push the telescopic body to the left, and then use the transition connecting frame to connect the telescopic body to the fixed body of the fully mechanized mining belt. Then drive the traction device to move towards the self-moving tail, so that the telescopic body is extended to its longest state. In this way, the telescopic body completes one cycle of shortening and extending.

[0040] Afterward, the telescopic hull continues to shorten following the movement of the self-moving tail section, and this process is repeated. One extension and retraction stroke of the telescopic hull can accommodate multiple movements of the self-moving tail section, greatly reducing downtime during fully mechanized mining, effectively improving production efficiency, and reducing labor costs.

[0041] Compared with existing technologies, the above-mentioned telescopic hull does not need to be connected to the self-moving tail and relies on the power of the self-moving tail to pull the telescopic hull. Only a traction device is needed to realize the telescopic movement of the hull, which greatly reduces the complexity of the design and on-site installation of the telescopic hull.

[0042] In summary, the advantages of this application compared to existing technologies, after adopting the above technical solution, are as follows: The telescopic device uses linear sliding friction to complete the telescopic action, resulting in better stability, stronger overall rigidity, and better ability to withstand heavy loads and impact loads. The telescopic frame uses traveling rollers, which have stronger load-bearing capacity, more stable movement, and are more suitable for complex underground roadways, while significantly reducing the risk of equipment tilting. The telescopic frame and the self-propelled tail section operate independently without connection, greatly reducing the complexity of the telescopic frame design and on-site installation.

[0043] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be construed as limiting the scope of protection of this application.

[0044] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0045] The above description is only a preferred embodiment of the present utility model. All equivalent changes and modifications made within the scope of the patent application of the present utility model shall be covered by the present utility model.

Claims

1. A telescopic device for a fully mechanized mining belt conveyor, characterized in that, It includes: A cylinder and a telescopic rod, one end of which is movably inserted into the cylinder; a guide block is connected to the end of the telescopic rod inside the cylinder, and the outer surface of the guide block is adapted to the inner wall of the cylinder; The cylinder has openings at both ends; one end of the cylinder is connected to a cylinder cap; the other end of the cylinder is connected to a cylinder end cap. The telescopic rod is a hollow rod; one end of the telescopic rod moves through the mounting hole of the cylinder end cover and is located inside the cylinder; the other end of the telescopic rod is connected to a telescopic rod cover.

2. The telescopic device for a fully mechanized mining belt conveyor as described in claim 1, characterized in that, One or more guide rings are connected to the outer surface of the guide block.

3. The telescopic device for a fully mechanized mining belt conveyor as described in claim 1, characterized in that, The telescopic rod has one or more vent holes, which are located inside the cylinder.

4. The telescopic device for a fully mechanized mining belt conveyor as described in claim 1, characterized in that, A second connecting lug is connected to the telescopic rod cover; a first connecting lug is welded to the cylinder cover.

5. The telescopic device for a fully mechanized mining belt conveyor as described in claim 1, characterized in that, A guide copper sleeve is connected to the inner side of the cylinder end cover; one end of the telescopic rod moves sequentially through the mounting through hole of the cylinder end cover and the guide copper sleeve.

6. The telescopic device for a fully mechanized mining belt conveyor as described in claim 1, characterized in that, The inner wall of the mounting through hole of the cylinder end cap is provided with felt and O-ring.

7. A telescopic fuselage, characterized in that, It includes a telescopic device for a fully mechanized mining conveyor as described in any one of claims 1-6, multiple telescopic frames, a traction device, a self-moving tail section, and a fully mechanized mining conveyor, wherein adjacent telescopic frames are connected by the telescopic device; the leftmost telescopic frame is connected to the traction device, and the rightmost telescopic frame is connected to the fully mechanized mining conveyor; the telescopic frames and the traction device are located between the self-moving tail section and the fully mechanized mining conveyor.

8. The telescopic fuselage as described in claim 7, characterized in that, The telescopic frame includes a frame support, on which a first upper roller group and a first lower roller group are connected; vertical rollers are also connected to the left and right sides of the frame support; telescopic device connecting plates are connected to the left and right sides of the frame support; the two sides of the telescopic device connecting plates are respectively hinged to the corresponding first connecting lugs and second connecting lugs of the telescopic device via pins; a traveling roller is rotatably connected to the bottom of the frame support.

9. The telescopic fuselage as described in claim 7, characterized in that, The traction device includes a traveling mechanism; a support frame is connected to the traveling mechanism, and a second upper idler roller group and a second lower idler roller group are connected to the support frame; a connecting rod is connected to one side of the support frame, and the connecting rod is connected to the telescopic frame located on the far left.

10. The telescopic fuselage as described in claim 7, characterized in that, It also includes a transition connecting frame, the left side of which is connected to the telescopic device connecting plate of the telescopic frame located on the far right, and the right side of which is connected to the fixed body of the fully mechanized mining belt conveyor.

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