Pressing block type oscillating tooth chain wheel assembly

Abstract

The invention 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, by arranging the tooth grooves and the tooth rows, 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, by arranging the pressing blocks, the tooth rows can be fixed to the chain wheel shaft more firmly, 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 invention belongs to the technical field of movable tooth sprockets, and more specifically, relates to a block-type movable tooth sprocket assembly. Background Art

[0002] As the main equipment of the coal mining face in the coal mine, the scraper conveyor is responsible for the transportation of coal on the face. In the transmission system of the scraper conveyor, the sprocket assembly is an important component for transmitting power, bearing the pulsating cycle load and the impact load caused by the flake coal and gangue. The chain nest of the tooth row meshes with the chain during use, causing wear of the chain nest at the contact part. When the wear reaches the pitch exceeding the matching requirements, chain jump failure is prone to occur, and coal cannot be transported normally. In order to ensure the normal operation of the scraper conveyor, it is necessary to stop the machine immediately for replacement. Generally, the operation is to remove the sprocket assembly as a whole and replace it with a sprocket assembly that meets the requirements. The operation time often takes several hours, and the labor intensity is high, which affects normal production. The replaced sprocket assembly is lifted to replace the sprocket body. When replacing, it needs to be completely disassembled. During the disassembly process, the bearings and seals are easily damaged and need to be replaced with new parts, which increases the maintenance cost. At the same time, it causes problems such as large workload of operation and maintenance, low labor efficiency, and long maintenance time, which is very uneconomical. Summary of the invention

[0003] The object of the present invention is to provide a block-type movable tooth sprocket assembly to reduce the maintenance and repair time of the sprocket.

[0004] To achieve the above-mentioned purpose, the technical solution adopted by the present invention is: to provide a pressure block type movable tooth sprocket assembly, including a sprocket shaft, a plurality of tooth rows and a plurality of pressure blocks, wherein a plurality of tooth grooves are evenly arranged along the circumferential direction in the middle part of the sprocket shaft, and a plurality of first fixing holes are provided on the groove bottom of the tooth grooves; a plurality of second fixing holes are evenly provided on the sprocket shaft at both ends of the tooth grooves; the tops of the plurality of tooth rows are chain nest structures, and the tops of the tooth rows are used to cooperate with the chain, and the tooth rows correspond to the tooth grooves one by one, and a plurality of third fixing holes are provided on the tooth rows, and the tooth rows are inserted into the corresponding tooth grooves, and the two ends of the tooth rows extend out of the corresponding tooth grooves, and bolts are screwed into the corresponding first fixing holes and the third fixing holes; each of the pressure blocks is arranged between adjacent tooth rows, and a fourth fixing hole is provided on the pressure block, and bolts are screwed into the corresponding second fixing holes and the fourth fixing holes, and the side walls of the pressure blocks are tightly pressed against the side walls of the adjacent tooth rows.

[0005] In a 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 a plane, 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 a 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, and when the tooth row is installed in place, a part 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 sealing 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 out of the mounting seat.

[0012] The beneficial effect of the pressure block type movable tooth sprocket assembly provided by the present invention is that compared with the prior art, the present invention makes the tooth row detachably connected by setting the tooth groove and the tooth row. When the sprocket assembly needs to be maintained, only the damaged tooth row needs to be replaced, 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 on the sprocket shaft more firmly, 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 drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. 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 creative labor.

[0014] Figure 1A schematic diagram of the structure of the block-type movable tooth sprocket assembly provided by an embodiment of the present invention during operation; Figure 2 A schematic diagram of the structure of a sprocket shaft provided in an embodiment of the present invention; Figure 3 A schematic diagram of the structure of a gear row provided in an embodiment of the present invention; Figure 4 A schematic diagram of the structure of a pressing block provided by an embodiment of the present invention; Figure 5 A plan view of a block-type movable tooth sprocket assembly provided in an embodiment of the present invention; Figure 6 for Figure 5 A magnified view of part A; Figure 7 for Figure 5 The planed surface view of the block-type movable tooth sprocket assembly along the BB direction; Figure 8 for Figure 7 Enlarged view of part C.

[0015] Among them, the reference numerals in the figures are as follows: 1. Sprocket shaft; 2. Tooth row; 3. Pressure block; 4. Bearing; 5. Mounting seat; 6. Sealing ring; 7. Cover; 101, tooth groove; 102, first fixing hole; 103, second fixing hole; 104, limit block; 201, third fixing hole; 202, positioning groove; 203, first washer; 301. Fourth fixing hole; 302. Second gasket. DETAILED DESCRIPTION

[0016] 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 in conjunction with 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 used to limit the present invention.

[0017] It should be further explained that the drawings and implementation modes of the present invention mainly describe the concept of the present invention. On the basis of this concept, the specific forms and settings of some connection relationships, positional relationships, power mechanisms, power supply systems, hydraulic systems and control systems 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 well-known manner.

[0018] When an element is referred to as being "fixed to" or "disposed on" another element, it may 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 may be directly connected to the other element or indirectly connected to the other element.

[0019] 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.

[0020] The terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, "multiple" means two or more, and "several" means one or more, unless otherwise clearly and specifically defined.

[0021] The block-type movable-tooth sprocket assembly provided by the present invention is now described.

[0022] Please also read Figure 1 and Figure 2 The pressure block type movable tooth sprocket assembly comprises 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 arranged on the bottom of the tooth grooves 101; a plurality of second fixing holes 103 are evenly arranged 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, and the tooth rows 2 have a plurality of first fixing holes 102 arranged on the bottom of the tooth grooves 101; the plurality of second fixing holes 103 are evenly arranged on the sprocket shaft 1 at both ends ... 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 the third fixing holes 201; each pressing block 3 is arranged between adjacent tooth rows 2, and a fourth fixing hole 301 is provided on the pressing block 3, and the bolts are screwed into the corresponding second fixing holes 103 and the fourth fixing holes 301, and the side walls of the pressing block 3 are tightly pressed against the side walls of the adjacent tooth row 2.

[0023] The beneficial effect of the pressure block type movable tooth sprocket assembly provided in the present embodiment is as follows: compared with the prior art, the pressure block type movable tooth sprocket assembly provided in the present 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, only the damaged tooth row 2 needs to be replaced, 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 on the sprocket shaft 1 more firmly, which greatly improves the overall strength of the sprocket assembly.

[0024] 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 tooth grooves 101. The length of the limit blocks 104 is less than the length of the tooth row 2. The first fixing holes 102 are arranged in the intervals of the limit blocks 104. The second fixing holes 103 are arranged at both ends of the limit blocks 104. The arrangement of the limit blocks 104 can facilitate the formation of the tooth grooves 101. At the same time, the length of the limit blocks 104 is less than the length of the tooth row 2, which can facilitate the length of the tooth grooves 101 to be less than the length of the tooth row 2, thereby allowing the two ends of the tooth row 2 to extend to the outside of the tooth grooves 101, providing installation space for the pressing block 3. Combination 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 planar, and the bottom surface of the tooth row 2 is a plane. 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 installed more firmly.

[0025] like Figure 7 and Figure 8 As shown, the interval between the parts 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 limiting block 104 is in the shape of a wedge that matches the limiting groove, and when the limiting block 104 is inserted into the limiting groove, the side wall of the limiting block 104 fits the corresponding side wall of the limiting groove, and the bottom of the limiting block 104 is arranged at intervals with the bottom of the limiting groove. The limiting block 104 is arranged at intervals with the bottom of the limiting groove, so that when the bolt is turned again at this time, the pressure block 3 can be given a tendency to slide toward the center of the sprocket shaft 1, and the side wall of the pressure block 3 will be pressed against the side wall of the corresponding tooth row 2, so that the friction between the pressure block 3 and the tooth row 2 is increased, and the purpose of reinforcing the tooth row 2 is achieved.

[0026] like Figure 3, positioning grooves 202 are provided on both sides of the tooth row 2. When the tooth row 2 is installed in place, a part of the limit block 104 constituting the tooth groove 101 is arranged in the positioning groove 202. The setting of the positioning groove 202 can facilitate the installation of the tooth row 2 on the one hand, and can also reinforce the installed tooth row 2 on the other hand.

[0027] Combination Figure 5 , Figure 6 , Figure 7 and Figure 8 As shown, 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 pressure block 3 and the pressure block 3. The provision of the first washer 203 and the second washer 302 can effectively prevent the bolt from loosening, thereby making the tooth row 2 and the pressure block 3 more firmly fixed.

[0028] 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, and 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 block type movable tooth sprocket assembly of the present invention with the external mechanism.

[0029] Finally, 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 out of the mounting seat 5. The provision of the sealing ring 6 and the cover 7 can seal the bearing 4 in a sealed cavity to protect the bearing 4.

[0030] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope 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 groove 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 socket 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, the tooth row (2) is provided with a plurality of third fixing holes (201), 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 the third fixing holes (201); A plurality of pressure blocks (3), each of the pressure blocks (3) being arranged between adjacent tooth rows (2), the pressure blocks (3) being provided with fourth fixing holes (301), bolts being screwed into the corresponding second fixing holes (103) and fourth fixing holes (301), and side walls of the pressure blocks (3) being tightly pressed against side walls of the adjacent tooth rows (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) extending along the axial direction of the sprocket shaft (1), the intervals between adjacent limit blocks (104) forming tooth grooves (101), the length of the limit blocks (104) being smaller than the length of the tooth row (2), the first fixing holes (102) being arranged in the intervals between the limit blocks (104), and the second fixing holes (103) being arranged 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 disposed 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 used to fix the tooth row (2) and the tooth row (2); A second washer (302) is provided between the bolt used to fix 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), and 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 sealing 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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