Crowned tooth chain wheel

Abstract

The invention relates to the technical field of coal mining machine driving parts, and discloses a crowned toothed chain wheel which comprises a main toothed chain wheel assembly, the inner side of the main toothed chain wheel assembly is provided with a quick mounting assembly used for quick mounting, the top of the main toothed chain wheel assembly is connected with a fixing seat assembly, and the main toothed chain wheel assembly comprises a main toothed chain wheel body. A first round hole is formed in the center of the main tooth chain wheel body, a special-shaped mounting groove is formed in the inner side of the main tooth chain wheel body, the special-shaped mounting groove is used for being matched with movement of the quick mounting assembly, and quick mounting is completed when the quick mounting assembly runs to be fixed by the fixing seat assembly.

Description

Technical Field

[0001] The present invention relates to the technical field of driving components of shearers, and in particular to a crowned tooth sprocket wheel. Background Art

[0002] The main function of the crowned tooth sprocket wheel in a shearer is to transmit the power of an engine or a motor to other components or machines, and transmit the power to another sprocket wheel through the meshing of the sprocket wheels, so as to drive the operation of other mechanical components.

[0003] Existing crowned tooth sprocket wheels are usually fixed with bolts. However, when using bolts for fixing, operators need to operate with the aid of tools. During the operation, attention needs to be paid to the tightening torque and tightening sequence of the bolts to avoid loosening or damage caused by improper operation or improper tightening. If the threads of the sprocket wheel body and the fixed shaft are worn, corresponding replacements are required. The operation is complex and the cost is high.

[0004] Therefore, the present invention provides a crowned tooth sprocket wheel. Summary of the Invention

[0005] In order to make up for the deficiencies of the prior art and solve at least one technical problem proposed in the background art.

[0006] The present invention provides a crowned tooth sprocket wheel, including a main sprocket wheel assembly. An installation-assisting assembly for quick installation is arranged inside the main sprocket wheel assembly. A fixing seat assembly is connected to the top of the main sprocket wheel assembly. The main sprocket wheel assembly includes a main sprocket wheel body. A first round hole is formed in the center of the main sprocket wheel body. A special-shaped installation groove is formed inside the main sprocket wheel body. The special-shaped installation groove is used to adapt to the movement of the installation-assisting assembly. When the installation-assisting assembly rotates to be fixed by the fixing seat assembly, quick installation is completed.

[0007] Preferably, the installation-assisting assembly includes an adjusting disc and a limiting disc. Arc-shaped holes are formed around the top of the adjusting disc. A first adjusting handle for driving the rotation of the adjusting disc is fixedly connected to the top of the adjusting disc. Limiting holes are formed around the top of the limiting disc. A driving rod is clamped inside the first adjusting handle. Limiting blocks are fixedly connected to the outer sides of the top and the middle of the driving rod. A clamping block is fixedly connected to the bottom of the driving rod.

[0008] Preferably, the first adjusting handle includes a handle rod body, an outer side of the top of the handle rod body is fixedly connected with a friction ring, both sides of the middle of the handle rod body are provided with square grooves, an inner wall of the square groove of the handle rod body is fixedly connected with a first spring, a side of the first spring away from the square groove of the handle rod body is fixedly connected with a clamping block, a bevel is arranged on a side of the clamping block away from the handle rod body, a side of the first spring close to the handle rod body is fixedly connected with an electric push rod, and a side of the electric push rod away from the first spring is fixedly connected with a controller.

[0009] Preferably, the fixed seat assembly includes two fixed seat bodies, clamping grooves are formed in side walls of the two fixed seat bodies, and a size of the clamping groove is in clearance fit with a size of the clamping block.

[0010] Quickly install this product so that this product is fixed outside the sprocket installation shaft.

[0011] Preferably, the fixed seat assembly further includes two push rods, a second spring is arranged between the two push rods, two ends of the second spring are respectively fixedly connected with the two push rods, a third moving groove is formed in an inner wall of the clamping groove, and a side of the push rod close to the fixed seat body is movably clamped inside the third moving groove.

[0012] Quickly disassemble this product so that this product is separated from the sprocket installation shaft.

[0013] Preferably, an installation ring groove is formed in an outer side of the middle of the main sprocket body, convex ring grooves are formed in both the top and the bottom of the installation ring groove, and a sub-sprocket assembly is arranged outside the installation ring groove.

[0014] Preferably, the sub-sprocket assembly includes a sub-sprocket body, convex ring blocks that are in clearance fit with the convex ring grooves are fixedly connected to both the top and the bottom of the sub-sprocket body, a second adjusting handle is fixedly connected to the top of the convex ring block located at the top, a second round hole is formed in the center of the sub-sprocket body, an inner diameter of the second round hole is in clearance fit with an outer diameter of the installation ring groove, and a structure of the second adjusting handle is the same as a structure of the first adjusting handle.

[0015] Adjust the transmission ratio of this product, and the adjustable range of the output power of the shearer is wider.

[0016] Preferably, a first moving groove that is in clearance fit with a bottom of the first adjusting handle is formed in the top of the main sprocket body, and a second moving groove that is in clearance fit with a top of the second adjusting handle is formed in the bottom of the main sprocket body.

[0017] Adapt to the rotation of the quick-installation component and the sub-sprocket component and limit the rotation range of the quick-installation component and the sub-sprocket component.

[0018] The beneficial effects of the present invention are as follows: For a drum-shaped tooth sprocket of the present invention, a quick-installation component is provided to cooperate with a fixed-seat component located at the top of the main tooth sprocket component. The first adjustment handle moves in the first movable groove to drive the adjustment disc to rotate, driving the clamping blocks to gather and tightly hold the tooth sprocket mounting shaft, and fixing the first adjustment handle through a clamping groove, thereby fixing the position of the clamping blocks, achieving the quick installation of this product. Then, by squeezing two push rods to release the fixation between the first adjustment handle and the fixed-seat main body, quick disassembly is realized. The overall disassembly and installation are time-saving and labor-saving, and can be achieved without other operating tools.

[0019] For a drum-shaped tooth sprocket of the present invention, a secondary tooth sprocket component is provided to cooperate with a fixed-seat component located at the bottom of the main tooth sprocket component. The second adjustment handle drives the secondary tooth sprocket main body to rotate, making the main tooth sprocket main body and the secondary tooth sprocket main body in a relatively misaligned state. At this time, the transmission ratio of this product is higher, and the conventional transmission ratio can be restored by resetting the secondary tooth sprocket main body, and the adjustable range of the output power of the shearer is wider. Description of the Drawings

[0020] Figure 1 is the top perspective view of the overall structure of the present invention; Figure 2 is the bottom perspective view of the overall structure of the present invention; Figure 3 is the schematic cross-sectional structure diagram of the main tooth sprocket component of the present invention; Figure 4 is the exploded schematic structure diagram of the quick-installation component of the present invention; Figure 5 is the schematic cross-sectional structure diagram of the secondary tooth sprocket component of the present invention; Figure 6 is the schematic cross-sectional structure diagram of the first adjustment handle of the present invention; Figure 7 is the schematic cross-sectional structure diagram of the fixed-seat component of the present invention.

[0021] Explanation of the Reference Numerals: 1. Main sprocket assembly; 101. Main sprocket body; 102. Convex ring groove; 103. Mounting ring groove; 104. First round hole; 105. Special-shaped mounting groove; 106. First movable groove; 107. Second movable groove; 2. Quick installation assembly; 201. Adjusting disc; 202. First adjusting handle; 2021. Friction ring; 2022. Handle rod body; 2023. First spring; 2024. Block; 2025. Controller; 2026. Electric push rod; 203. Limiting disc; 204. Limiting hole; 205. Driving rod; 206. Limiting block; 207. Clamping block; 208. Arc-shaped hole; 3. Sub-sprocket assembly; 301. Sub-sprocket body; 302. Convex ring block; 303. Second round hole; 304. Second adjusting handle; 4. Fixed seat assembly; 401. Fixed seat body; 402. Push rod; 403. Second spring; 404. Card slot; 405. Third movable groove. Detailed implementation manners

[0022] Now, the subject matter described herein will be discussed with reference to exemplary implementation manners. It should be understood that discussing these implementation manners is only to enable those skilled in the art to better understand and thus implement the subject matter described herein. Without departing from the scope of protection of the content of this specification, changes can be made to the functions and arrangements of the elements discussed. Each example can omit, substitute, or add various processes or components as needed. Additionally, the features described relative to some examples can also be combined in other examples.

[0023] As Figures 1 to 7 shown, a drum-shaped tooth sprocket according to an embodiment of the present invention is shown. Please refer specifically to Figure 1 , Figure 2 , Figure 3 , which includes a main sprocket assembly 1. An inner side of the main sprocket assembly 1 is provided with a quick installation assembly 2 for quick installation. A top of the main sprocket assembly 1 is connected to a fixed seat assembly 4. The main sprocket assembly 1 includes a main sprocket body 101. A first round hole 104 is opened at a center of the main sprocket body 101. A special-shaped mounting groove 105 is opened at an inner side of the main sprocket body 101. The special-shaped mounting groove 105 is used to adapt to the movement of the quick installation assembly 2. When the quick installation assembly 2 rotates to be fixed by the fixed seat assembly 4, the quick installation is completed.

[0024] Please refer specifically to Figure 3 , Figure 4, the quick - installation component 2 includes an adjustment disk 201 and a limit disk 203. Arc - shaped holes 208 are formed around the top of the adjustment disk 201. A first adjustment handle 202 for driving the rotation of the adjustment disk 201 is fixedly connected to the top of the adjustment disk 201. Limit holes 204 are formed around the top of the limit disk 203. A driving rod 205 is clamped inside the first adjustment handle 202. Limit blocks 206 are fixedly connected to the outer sides of the top and middle of the driving rod 205. A clamping block 207 is fixedly connected to the bottom of the driving rod 205.

[0025] Specifically, the limit block 206 at the top is located on the top of the adjustment disk 201, and the limit block 206 at the middle is located between the adjustment disk 201 and the limit disk 203, and the distance between the adjustment disk 201 and the limit disk 203 has a clearance fit with the height of the limit block 206. The adjustment disk 201 is rotatably connected to the special - shaped installation groove 105, and the limit disk 203 is fixedly connected to the special - shaped installation groove 105.

[0026] Please refer specifically to Figure 6 , the first adjustment handle 202 includes a handle rod body 2022. A friction ring 2021 is fixedly connected to the outer side of the top of the handle rod body 2022. Square grooves are opened on both sides of the middle of the handle rod body 2022. A first spring 2023 is fixedly connected to the inner wall of the square groove of the handle rod body 2022. A clamping block 2024 is fixedly connected to the side of the first spring 2023 away from the square groove of the handle rod body 2022. An inclined angle is provided on the side of the clamping block 2024 away from the handle rod body 2022. An electric push rod 2026 is fixedly connected to the side of the first spring 2023 close to the handle rod body 2022. A controller 2025 is fixedly connected to the side of the electric push rod 2026 away from the first spring 2023.

[0027] Specifically, the bottom of the handle rod body 2022 is fixedly connected to the top of the adjustment disk 201, and the height of the square groove of the handle rod body 2022 has a clearance fit with the height of the clamping block 2024.

[0028] Please refer specifically to Figure 7 , the fixed - seat component 4 includes two fixed - seat bodies 401. Card slots 404 are opened on the side walls of the two fixed - seat bodies 401 close to each other. The size of the card slots 404 has a clearance fit with the size of the clamping block 2024.

[0029] Specifically, when the clamping block 2024 moves near the fixed - seat body 401, the clamping block 2024 will be squeezed by the fixed - seat body 401 near the first movable groove 106, causing the clamping block 2024 to shrink into the square groove of the handle rod body 2022 until the clamping block 2024 moves to the periphery of the card slot 404 and the clamping block 2024 loses the extrusion. Under the action of the first spring 2023, the clamping block 2024 extends and is clamped in the card slot 404 to complete the fixation; Grasp the first adjustment handle 202 and move it in the first movable slot 106, moving from the side of the first movable slot 106 away from the fixed seat assembly 4 towards the direction close to the fixed seat assembly 4. The first adjustment handle 202 drives the adjustment disc 201 to rotate. Since the limit disc 203 is fixed and the limit hole 204 is used to limit the top of the drive rod 205, when the adjustment disc 201 rotates, the position of the arc-shaped hole 208 will move. Therefore, the position where the arc-shaped hole 208 and the limit hole 204 coincide gradually moves towards the direction close to the center of the adjustment disc 201, thereby driving the drive rod 205 to approach the center of the adjustment disc 201 under the joint limitation of the arc-shaped hole 208 and the limit hole 204, thus adjusting the distance between the three clamping blocks 207 to decrease. When the first adjustment handle 202 is clamped in the card slot 404, the installation is completed. The three clamping blocks 207 jointly hold the installation shaft, and the inner diameter formed between the three clamping blocks 207 is smaller than the outer side of the sprocket installation shaft, and this product can be stably fixed on the outer side of the sprocket installation shaft.

[0030] Please refer particularly to Figure 7 The fixed seat assembly 4 further includes two push rods 402. A second spring 403 is arranged between the two push rods 402. The two ends of the second spring 403 are respectively fixedly connected to the two push rods 402. The inner wall of the card slot 404 is provided with a third movable slot 405, and the sides of the two push rods 402 close to the fixed seat main body 401 are respectively movably clamped inside the two corresponding third movable slots 405.

[0031] Specifically, after the installation is completed, the first adjustment handle 202 will be clamped and fixed inside the fixed seat assembly 4, that is, the clamping block 2024 is clamped inside the card slot 404, squeezing the two push rods 402 to compress the second spring 403, and pushing the clamping block 2024 out of the card slot 404 through the push rods 402 and pulling the first adjustment handle 202 away from the card slot 404 to complete the disassembly.

[0032] Please refer particularly to Figure 3 On the outer side of the middle part of the main sprocket body 101, an installation ring groove 103 is provided. Convex ring grooves 102 are provided at the top and bottom of the installation ring groove 103, and the sub-sprocket assembly 3 is rotatably connected to the outer side of the installation ring groove 103.

[0033] Please refer particularly to Figure 5 The sub-sprocket assembly 3 includes a sub-sprocket main body 301. Convex ring blocks 302 that are in clearance fit with the convex ring grooves 102 are fixedly connected to the top and bottom of the sub-sprocket main body 301 respectively. A second adjustment handle 304 is fixedly connected to the top of the convex ring block 302 located at the top. A second circular hole 303 is provided at the center of the sub-sprocket main body 301, and the inner diameter of the second circular hole 303 is in clearance fit with the outer diameter of the installation ring groove 103. The structure of the second adjustment handle 304 is the same as the structure of the first adjustment handle 202.

[0034] Specifically, first, squeeze the two push rods 402 located on one side of the second movable slot 107 during the disassembly process as described above, so that the second adjustment handle 304 disengages from the fixed seat body 401. Then, grasp the second adjustment handle 304 and move it in the second movable slot 107, moving from the fixed seat assembly 4 on one side of the second movable slot 107 to the other side of the second movable slot 107, thereby driving the convex ring block 302 and the sub-tooth sprocket body 301 to rotate in the convex ring slot 102, so as to adjust the teeth of the sub-tooth sprocket body 301 to be relatively staggered from the teeth of the main-tooth sprocket body 101, causing the midpoint of each tooth of the sub-tooth sprocket body 301 to be on the same vertical line as the midpoints of two adjacent teeth of the main-tooth sprocket body 101. At this time, the second adjustment handle 304 is fixed in the fixed seat assembly 4 on the other side of the second movable slot 107, and the number of teeth of this product is doubled; The sub-tooth sprocket assembly 3 has two states. As Figure 1 and Figure 2 shown in the figure, the sub-tooth sprocket assembly 3 is in the normal transmission ratio state, and the teeth of the main-tooth sprocket body 101 and the sub-tooth sprocket body 301 correspond one by one. When the teeth of the sub-tooth sprocket body 301 are adjusted to be relatively staggered from the teeth of the main-tooth sprocket body 101, causing the midpoint of each tooth of the sub-tooth sprocket body 301 to be on the same vertical line as the midpoints of two adjacent teeth of the main-tooth sprocket body 101, it is in the relative misalignment state at this time.

[0035] Please refer specifically to Figure 2 、 Figure 3 , a first movable slot 106 with a clearance fit with the bottom of the first adjustment handle 202 is provided at the top of the main-tooth sprocket body 101, and a second movable slot 107 with a clearance fit with the top of the second adjustment handle 304 is provided at the bottom of the main-tooth sprocket body 101.

[0036] Specifically, the bottom of the first movable slot 106 communicates with the special-shaped installation slot 105, the top of the second movable slot 107 communicates with the convex ring slot 102, and the central angle corresponding to the arc length of the first movable slot 106 is the same as the angle that the first adjustment handle 202 can drive the adjustment disk 201 to rotate, and the central angle corresponding to the arc length of the second movable slot 107 is the same as the angle that the second adjustment handle 304 drives the sub-tooth sprocket body 301 to rotate.

[0037] Working principle When using this product, first, put the whole product on the outside of the coal shearer tooth sprocket installation shaft, and the installation shaft passes through the first round hole 104; During installation: Grasp the first adjustment handle 202 and move it in the first movable slot 106, moving from the side of the first movable slot 106 away from the fixed seat assembly 4 towards the direction close to the fixed seat assembly 4. The first adjustment handle 202 drives the adjustment disc 201 to rotate. Since the limit disc 203 is fixed and the limit hole 204 is used to limit the top of the driving rod 205, when the adjustment disc 201 rotates, the position of the arc-shaped hole 208 will move. Therefore, the position where the arc-shaped hole 208 and the limit hole 204 coincide gradually moves towards the direction close to the center of the adjustment disc 201, thereby driving the driving rod 205 to approach the center of the adjustment disc 201 under the common limitation of the arc-shaped hole 208 and the limit hole 204, so as to adjust the distance between the three clamping blocks 207 to decrease. When the first adjustment handle 202 is clamped in the card slot 404, the installation is completed. The three clamping blocks 207 jointly hold the installation shaft, and the inner diameter formed between the three clamping blocks 207 is smaller than the outer side of the sprocket installation shaft, and this product can be stably fixed on the outer side of the sprocket installation shaft; During disassembly: After the installation is completed, the first adjustment handle 202 will be clamped and fixed inside the fixed seat assembly 4, that is, the clamping block 2024 is clamped inside the card slot 404, squeezing the two push rods 402 to compress the second spring 403, pushing the clamping block 2024 out of the card slot 404 through the push rod 402 and pulling the first adjustment handle 202 away from the card slot 404 to complete the disassembly. And when the sprocket does not require a more efficient transmission ratio, the main sprocket body 101 can be positioned with the second round hole 303 by pushing the first spring 2023 through the clamping block 2024. When a more efficient transmission ratio is required, the electric push rod 2026 is controlled by the controller 2025 to extend and be positioned, so as to ensure that when the sprocket is transmitting power, the relative position of the main sprocket body 101 and the second round hole 303 remains unchanged, avoiding the situation that the main sprocket body 101 and the second round hole 303 have relative displacement due to high-speed rotation; If a more efficient transmission ratio is required, the number of teeth of this product can be doubled by adjusting the secondary sprocket assembly 3: First, as in the above disassembly process, squeeze the two push rods 402 on one side of the second movable slot 107 to make the second adjustment handle 304 disengage from the fixed seat body 401, and then grasp the second adjustment handle 304 and move it in the second movable slot 107, moving from the fixed seat assembly 4 on one side of the second movable slot 107 to the other side of the second movable slot 107, thereby driving the convex ring block 302 and the secondary sprocket body 301 to rotate in the convex ring groove 102 to adjust the teeth of the secondary sprocket body 301 to be relatively staggered with the teeth of the main sprocket body 101, so that the midpoint of each tooth of the secondary sprocket body 301 is on the same vertical line as the midpoints of two adjacent teeth of the main sprocket body 101. At this time, the second adjustment handle 304 is fixed in the fixed seat assembly 4 on the other side of the second movable slot 107, and the number of teeth of this product is adjusted to be doubled.

[0038] The above-described embodiments of the specific implementation manners have been described, but the present embodiments are not limited to the above specific implementation manners. The above specific implementation manners are merely illustrative rather than restrictive. Under the inspiration of the present embodiments, those of ordinary skill in the art can also make many forms, all of which fall within the protection scope of the present embodiments.

Claims

1. A drum-shaped tooth sprocket, characterized in that: The invention comprises a main tooth sprocket assembly (1), wherein a quick-installation assembly (2) for quick installation is arranged on the inner side of the main tooth sprocket assembly (1), and a fixing seat assembly (4) is connected to the top of the main tooth sprocket assembly (1). The main tooth sprocket assembly (1) comprises a main tooth sprocket body (101), a first circular hole (104) is provided at the center of the main tooth sprocket body (101), and a special-shaped installation groove (105) is provided on the inner side of the main tooth sprocket body (101), and the special-shaped installation groove (105) is used to adapt to the movement of the quick-installation assembly (2). The quick-installation assembly (2) is quickly installed when it is operated and fixed by the fixing seat assembly (4).

2. A drum-shaped tooth sprocket according to claim 1, characterized in that: The quick-release assembly (2) comprises an adjustment disk (201) and a limit disk (203); arc-shaped holes (208) are provided around the top of the adjustment disk (201); the top of the adjustment disk (201) is fixedly connected to a first adjustment handle (202) for driving the adjustment disk (201) to rotate; limit holes (204) are provided around the top of the limit disk (203); a driving rod (205) is clamped on the inner side of the first adjustment handle (202); the outer sides of the top and middle of the driving rod (205) are fixedly connected to a limit block (206); and the bottom of the driving rod (205) is fixedly connected to a clamp block (207).

3. A drum-shaped tooth sprocket according to claim 2, characterized in that: The first adjustment handle (202) comprises a handle body (2022), a friction ring (2021) is fixedly connected to the outer side of the top of the handle body (2022), square grooves are opened and closed on both sides of the middle of the handle body (2022), a first spring (2023) is fixedly connected to the inner wall of the square groove of the handle body (2022), a clamping block (2024) is fixedly connected to the side of the first spring (2023) away from the square groove of the handle body (2022), an oblique angle is provided on the side of the clamping block (2024) away from the handle body (2022), an electric push rod (2026) is fixedly connected to the side of the first spring (2023) close to the handle body (2022), and a controller (225) is fixedly connected to the side of the electric push rod (2026) away from the first spring (2023).

4. A drum-shaped tooth sprocket according to claim 3, characterized in that: The fixing seat assembly (4) comprises two fixing seat bodies (401), and the side walls of the two fixing seat bodies (401) are each provided with a card slot (404), the size of the card slot (404) being clearance-matched with the size of the card block (2024).

5. A drum-shaped tooth sprocket according to claim 4, characterized in that: The fixing seat assembly (4) further comprises two push rods (402), a second spring (403) being arranged between the two push rods (402), two ends of the second spring (403) being fixedly connected to the two push rods (402) respectively, a third movable groove (405) being provided on the inner wall of the clamping groove (404), and a side of the push rod (402) close to the fixing seat body (401) being movably clamped on the inner side of the third movable groove (405).

6. A drum-shaped tooth sprocket according to claim 3, characterized in that: A mounting annular groove (103) is provided on the outer side of the middle of the main tooth sprocket body (101), convex annular grooves (102) are provided on the top and bottom of the mounting annular groove (103), and a secondary tooth sprocket assembly (3) is provided on the outer side of the mounting annular groove (103).

7. A drum-shaped tooth sprocket according to claim 6, characterized in that: The auxiliary tooth sprocket assembly (3) comprises an auxiliary tooth sprocket body (301), the top and bottom of the auxiliary tooth sprocket body (301) are fixedly connected with convex ring blocks (302) that are clearance-matched with the convex ring groove (102), the top of the convex ring block (302) located at the top is fixedly connected with a second adjustment handle (304), a second circular hole (303) is opened at the center of the auxiliary tooth sprocket body (301), the inner diameter of the second circular hole (303) is clearance-matched with the outer diameter of the mounting ring groove (103), and the structure of the second adjustment handle (304) is the same as that of the first adjustment handle (202).

8. A drum-shaped tooth sprocket according to claim 7, characterized in that: A first movable groove (106) is provided at the top of the main tooth sprocket body (101) and is clearance-matched with the bottom of the first adjustment handle (202). A second movable groove (107) is provided at the bottom of the main tooth sprocket body (101) and is clearance-matched with the top of the second adjustment handle (304).

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