Pressing block type oscillating tooth chain wheel assembly

Abstract

The utility model provides a pressing block type oscillating tooth chain wheel assembly, a plurality of tooth grooves are evenly formed in the middle of a chain wheel shaft in the circumferential direction, and a plurality of first fixing holes are formed in the groove bottoms of the tooth grooves; a plurality of second fixing holes are uniformly formed in the chain wheel shaft at the two ends of the tooth grooves; the top of each tooth row is of a chain nest structure, the tooth rows correspond to the tooth grooves in a one-to-one mode, a plurality of third fixing holes are formed in the tooth rows, the tooth rows are arranged in the corresponding tooth grooves in an inserted mode, the two ends of each tooth row extend out of the corresponding tooth grooves, the pressing blocks are arranged between the adjacent tooth rows respectively, fourth fixing holes are formed in the pressing blocks, and the side walls of the pressing blocks abut against the side walls of the adjacent tooth rows. According to the chain wheel assembly, the tooth grooves and the tooth rows are arranged, the tooth rows are detachably connected, when the chain wheel assembly needs to be maintained, only the damaged tooth rows need to be replaced, the maintenance and repair time of the chain wheel assembly is greatly shortened, meanwhile, the tooth rows can be fixed to the chain wheel shaft more firmly through the pressing blocks, and the service life of the chain wheel assembly is prolonged. And the overall strength of the chain wheel assembly is greatly improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of movable tooth sprockets, and more specifically relates to a press-block type movable tooth sprocket assembly. Background Art

[0002] Scraper conveyors are essential equipment at underground coal mining faces, responsible for transporting coal. Within the scraper conveyor's transmission system, the sprocket assembly is a crucial component for transmitting power, subject to pulsating cyclic loads and the impact loads caused by sheared coal and gangue. During use, the meshing motion of the toothed chain rings with the chain causes wear at the contact points. When wear exceeds the required pitch, chain skipping can occur, preventing proper coal transport. To ensure proper operation of the scraper conveyor, the conveyor must be shut down and replaced immediately. Typically, this involves disassembling the entire sprocket assembly and replacing it with a suitable one. This labor-intensive process often takes several hours, disrupting normal production. The replaced sprocket assembly is then lifted up to the surface and replaced with the sprocket body. This replacement requires complete disassembly, which can easily damage bearings and seals, necessitating replacements. This increases maintenance costs, increases maintenance workload, reduces worker efficiency, and increases maintenance time, making it highly uneconomical. Utility Model Content

[0003] The purpose of the utility model is to provide a block-type movable tooth sprocket assembly to reduce the maintenance and repair time of the sprocket.

[0004] 4. The repairing kit for automotive dents, according to claim 1, wherein a bottom of the foot stand comprises a through-hole, and the two foot pieces comprise two bosses, wherein the bosses comprise a through-hole, a screw bolt, and a nut. The bosses comprise a through-hole, a screw bolt, and a nut. The bosses comprise a through-hole, a screw bolt, and a nut.

[0005] In one possible implementation, a plurality of limit blocks are formed in the middle portion of the sprocket shaft, the limit blocks extend along the axial direction of the sprocket shaft, the intervals between adjacent limit blocks constitute tooth grooves, the length of the limit blocks is smaller than the length of the tooth row, the first fixing hole is arranged in the interval of the limit blocks, and the second fixing hole is arranged at both ends of the limit blocks.

[0006] In one possible implementation, the middle portion of the sprocket shaft is a polyhedron, the side walls of the polyhedron corresponding to each tooth groove are planar, the bottom surface of the tooth row is planar, and when the tooth row is fixed on the sprocket shaft, the bottom surface of the tooth row abuts against the bottom of the corresponding tooth groove.

[0007] In one possible implementation, the interval between the parts of two adjacent tooth rows extending to the same side of the tooth groove forms a limit groove, and the cross-section of the limit groove is trapezoidal; the shape of the limit block is a wedge shape adapted to the limit groove, and when the limit block is inserted into the limit groove, the side wall of the limit block fits into the corresponding side wall of the limit groove, and the bottom of the limit block is spaced apart from the bottom of the limit groove.

[0008] In a possible implementation, positioning grooves are provided on both sides of the tooth row. When the tooth row is installed in place, a portion of the limiting block constituting the tooth groove is disposed in the positioning groove.

[0009] In a possible implementation, a first washer is provided between a bolt for fixing the tooth row and the tooth row; and a second washer is provided between a bolt for fixing the pressure block and the pressure block.

[0010] In a possible implementation, bearings are provided at both ends of the sprocket shaft, and mounting seats are connected to the bearings, and the mounting seats are used to be connected and fixed to the outside.

[0011] In a possible implementation, a sealing ring is provided between the mounting seat and the sprocket shaft, and a cover is provided at the end of the mounting seat at one end of the sprocket shaft; the other end of the sprocket shaft extends outward from the mounting seat.

[0012] The beneficial effect of the pressure block type movable tooth sprocket assembly provided by the utility model is that: compared with the existing technology, the utility model makes the tooth row detachable and connected by setting the tooth groove and the tooth row. When the sprocket assembly needs to be maintained, it is only necessary to replace the damaged tooth row, which greatly reduces the maintenance and repair time of the sprocket assembly. At the same time, by setting the pressure block, the tooth row can be fixed more firmly on the sprocket shaft, which greatly improves the overall strength of the sprocket assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments or descriptions of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0014] Figure 1 A schematic diagram of the structure of the block-type movable tooth sprocket assembly provided by an embodiment of the utility model during operation;

[0015] Figure 2 A schematic structural diagram of a sprocket shaft provided in an embodiment of the present utility model;

[0016] Figure 3 A schematic diagram of the structure of a gear row provided in an embodiment of the present utility model;

[0017] Figure 4 A schematic structural diagram of a compression block provided in an embodiment of the present utility model;

[0018] Figure 5 A plan view of a block-type movable tooth sprocket assembly provided in an embodiment of the present utility model;

[0019] Figure 6 for Figure 5 A magnified view of part A;

[0020] Figure 7 for Figure 5 The plan view of the block-type movable tooth sprocket assembly along the BB direction;

[0021] Figure 8 for Figure 7 Enlarged view of part C.

[0022] Among them, the reference numerals in the figures are as follows:

[0023] 1. Sprocket shaft; 2. Gear row; 3. Pressure block; 4. Bearing; 5. Mounting seat; 6. Sealing ring; 7. Cover;

[0024] 101, tooth groove; 102, first fixing hole; 103, second fixing hole; 104, limit block;

[0025] 201, third fixing hole; 202, positioning groove; 203, first washer;

[0026] 301. Fourth fixing hole; 302. Second washer. DETAILED DESCRIPTION

[0027] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0028] It should be further explained that the drawings and implementation methods of the present invention mainly describe the concept of the present invention. On the basis of this concept, some connection relationships, positional relationships, power mechanisms, power supply systems, hydraulic systems and control systems, etc. The specific forms and settings may not be fully described. However, on the premise that those skilled in the art understand the concept of the present invention, those skilled in the art can implement the above-mentioned specific forms and settings in a familiar manner.

[0029] When an element is referred to as being “fixed to” or “disposed on” another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being “connected to” another element, it can be directly connected to the other element or indirectly connected to the other element.

[0030] The directions or positional relationships indicated by terms such as "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" are based on the directions or positional relationships shown in the accompanying drawings and are only for the convenience of describing the present invention and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operate in a specific direction. Therefore, they should not be understood as limiting the present invention.

[0031] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Therefore, a feature specified as "first" or "second" may explicitly or implicitly include one or more of such features. In the description of this utility model, "plurality" means two or more, and "several" means one or more, unless otherwise specifically defined.

[0032] The block-type movable tooth sprocket assembly provided by the utility model is now described.

[0033] Please also refer to Figure 1 and Figure 2The pressure block type movable tooth sprocket assembly includes a sprocket shaft 1, a plurality of tooth rows 2 and a plurality of pressure blocks 3, wherein a plurality of tooth grooves 101 are evenly arranged along the circumferential direction in the middle of the sprocket shaft 1, and a plurality of first fixing holes 102 are provided on the bottom of the tooth grooves 101; a plurality of second fixing holes 103 are evenly provided on the sprocket shaft 1 at both ends of the tooth grooves 101; the tops of the plurality of tooth rows 2 are chain nest structures, and the tops of the tooth rows 2 are used to cooperate with the chain, and the tooth rows 2 correspond to the tooth grooves 101 one by one. A plurality of third fixing holes 201 are provided, the tooth row 2 is inserted into the corresponding tooth groove 101, and the two ends of the tooth row 2 extend out of the corresponding tooth groove 101, and the bolts are screwed into the corresponding first fixing holes 102 and third fixing holes 201; each pressure block 3 is arranged between adjacent tooth rows 2, and a fourth fixing hole 301 is provided on the pressure block 3, and the bolts are screwed into the corresponding second fixing holes 103 and fourth fixing holes 301, and the side walls of the pressure block 3 are tightly pressed against the side walls of the adjacent tooth row 2.

[0034] The beneficial effect of the pressure block type movable tooth sprocket assembly provided in this embodiment is: compared with the prior art, the pressure block type movable tooth sprocket assembly provided in this embodiment makes the tooth row 2 detachably connected by setting the tooth groove 101 and the tooth row 2. When the sprocket assembly needs to be maintained, it is only necessary to replace the damaged tooth row 2, which greatly reduces the maintenance and repair time of the sprocket assembly. At the same time, by setting the pressure block 3, the tooth row 2 can be fixed more firmly on the sprocket shaft 1, which greatly improves the overall strength of the sprocket assembly.

[0035] like Figure 2 As shown, a plurality of limit blocks 104 are formed in the middle of the sprocket shaft 1. The limit blocks 104 extend along the axial direction of the sprocket shaft 1. The intervals between adjacent limit blocks 104 form a tooth groove 101. The length of the limit blocks 104 is less than the length of the tooth row 2. The first fixing holes 102 are provided in the intervals between the limit blocks 104, and the second fixing holes 103 are provided at both ends of the limit blocks 104. The provision of the limit blocks 104 facilitates the formation of the tooth groove 101. At the same time, the length of the limit blocks 104 is less than the length of the tooth row 2, which facilitates the length of the tooth groove 101 to be less than the length of the tooth row 2, thereby allowing the two ends of the tooth row 2 to extend outside the tooth groove 101, providing installation space for the pressure block 3.

[0036] Combine Figure 5 、 Figure 2 、 Figure 4 and Figure 7 As shown, the middle part of the sprocket shaft 1 is a polyhedron, and the side walls of the polyhedron corresponding to each tooth groove 101 are flat. The bottom surface of the tooth row 2 is flat. When the tooth row 2 is fixed on the sprocket shaft 1, the bottom surface of the tooth row 2 abuts against the bottom of the corresponding tooth groove 101, which can make the tooth row 2 more firmly installed.

[0037] like Figure 7 and Figure 8As shown, the gap between the portions of two adjacent tooth rows 2 extending to the same side of the tooth groove 101 forms a limiting groove, the cross-section of which is trapezoidal. The limiting block 104 is in the shape of a wedge that matches the limiting groove. When the limiting block 104 is inserted into the limiting groove, the side walls of the limiting block 104 fit in place with the corresponding side walls of the limiting groove, and the bottom of the limiting block 104 is spaced apart from the bottom of the limiting groove. The spacing between the limiting block 104 and the bottom of the limiting groove allows rotating the bolt at this time to give the pressure block 3 a tendency to slide toward the center of the sprocket shaft 1. The side walls of the pressure block 3 will press against the side walls of the corresponding tooth row 2, increasing the friction between the pressure block 3 and the tooth row 2, thereby reinforcing the tooth row 2.

[0038] like Figure 3 , positioning grooves 202 are provided on both sides of the gear row 2. When the gear row 2 is installed in place, a portion of the limit block 104 constituting the gear groove 101 is located in the positioning groove 202. The provision of the positioning groove 202 can, on the one hand, facilitate the installation of the gear row 2, and on the other hand, can also reinforce the installed gear row 2.

[0039] Combine Figure 5 、 Figure 6 、 Figure 7 and Figure 8 As shown, a first washer 203 is provided between the bolts securing the tooth row 2 and the tooth row 2; a second washer 302 is provided between the bolts securing the pressure block 3 and the pressure block 3. The provision of the first washer 203 and the second washer 302 effectively prevents the bolts from loosening, thereby further securing the tooth row 2 and the pressure block 3.

[0040] like Figure 5 The two ends of the sprocket shaft 1 are provided with bearings 4, and a mounting seat 5 is connected to the bearing 4. The mounting seat 5 is used to connect and fix with the outside. The setting of the mounting seat 5 can facilitate the fixing of the pressure block type movable tooth sprocket assembly of the utility model with the external mechanism.

[0041] Finally, a sealing ring 6 is provided between the mounting seat 5 and the sprocket shaft 1. A cover 7 is provided at the end of the mounting seat 5 at one end of the sprocket shaft 1; the other end of the sprocket shaft 1 extends outside the mounting seat 5. The provision of the sealing ring 6 and cover 7 can seal the bearing 4 in a sealed cavity, thereby protecting the bearing 4.

[0042] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A block-type movable tooth sprocket assembly, characterized in that: include: A sprocket shaft (1) has a plurality of tooth grooves (101) evenly arranged in the circumferential direction in the middle, and a plurality of first fixing holes (102) are provided on the bottom of the tooth grooves (101); and a plurality of second fixing holes (103) are evenly provided on the sprocket shaft (1) at both ends of the tooth grooves (101); A plurality of tooth rows (2), the top of which is a chain nest structure, the top of the tooth row (2) is used to cooperate with the chain, the tooth row (2) corresponds to the tooth groove (101) one by one, a plurality of third fixing holes (201) are provided on the tooth row (2), the tooth row (2) is inserted into the corresponding tooth groove (101), and both ends of the tooth row (2) extend out of the corresponding tooth groove (101), and bolts are screwed into the corresponding first fixing hole (102) and the third fixing hole (201); A plurality of pressure blocks (3), each of the pressure blocks (3) is arranged between adjacent tooth rows (2), a fourth fixing hole (301) is provided on the pressure block (3), a bolt is screwed into the corresponding second fixing hole (103) and fourth fixing hole (301), and the side wall of the pressure block (3) is tightly pressed against the side wall of the adjacent tooth row (2).

2. The block-type movable tooth sprocket assembly according to claim 1, characterized in that: A plurality of limit blocks (104) are formed in the middle of the sprocket shaft (1), the limit blocks (104) extend along the axial direction of the sprocket shaft (1), the intervals between adjacent limit blocks (104) form tooth grooves (101), the length of the limit blocks (104) is less than the length of the tooth row (2), the first fixing hole (102) is provided in the interval between the limit blocks (104), and the second fixing holes (103) are provided at both ends of the limit blocks (104).

3. The block-type movable tooth sprocket assembly according to claim 2, characterized in that: The middle portion of the sprocket shaft (1) is a polyhedron, the side walls of the polyhedron corresponding to each tooth groove (101) are planar, the bottom surface of the tooth row (2) is a plane, and when the tooth row (2) is fixed on the sprocket shaft (1), the bottom surface of the tooth row (2) abuts against the bottom of the corresponding tooth groove (101).

4. The block-type movable tooth sprocket assembly according to claim 3, characterized in that: The interval between the portions of two adjacent tooth rows (2) extending to the same side of the tooth groove (101) forms a limiting groove, and the cross section of the limiting groove is trapezoidal; The shape of the limit block (104) is a wedge shape that matches the limit groove. When the limit block (104) is inserted into the limit groove, the side wall of the limit block (104) fits with the corresponding side wall of the limit groove, and the bottom of the limit block (104) is spaced apart from the bottom of the limit groove.

5. The block-type movable tooth sprocket assembly according to claim 4, characterized in that: Positioning grooves (202) are provided on both sides of the tooth row (2). When the tooth row (2) is installed in place, a portion of the limiting block (104) constituting the tooth groove (101) is located in the positioning groove (202).

6. The block-type movable tooth sprocket assembly according to claim 5, characterized in that: A first washer (203) is provided between the bolt for fixing the tooth row (2) and the tooth row (2); A second washer (302) is provided between the bolt for fixing the pressing block (3) and the pressing block (3).

7. The block-type movable tooth sprocket assembly according to claim 6, characterized in that: Bearings (4) are provided at both ends of the sprocket shaft (1), and mounting seats (5) are connected to the bearings (4). The mounting seats (5) are used for being connected and fixed to the outside.

8. The block-type movable tooth sprocket assembly according to claim 7, characterized in that: A sealing ring (6) is provided between the mounting seat (5) and the sprocket shaft (1), and a cover (7) is provided at the end of the mounting seat (5) at one end of the sprocket shaft (1); the other end of the sprocket shaft (1) extends outward from the mounting seat (5).

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