Quick-release sprocket shaft assembly for scraper conveyor

Abstract

The invention discloses a quick-release sprocket shaft group for a scraper conveyor, comprising a sprocket body sleeved on the surface of the sprocket shaft body, an adjusting mechanism being arranged on one side inside the sprocket shaft body, a limiting mechanism being arranged on the surface of the sprocket shaft body close to the adjusting mechanism, the limiting mechanism being tightly attached to one side of the sprocket body through the adjusting mechanism, a stabilizing mechanism and a locking mechanism being movably arranged inside the sprocket shaft body; three groups of interference keys, the three groups of interference keys being distributed in an annular array about the axis of a lead screw, one side of the interference key being fixedly connected to a transmission wedge seat, the transmission wedge seat being movable on the surface wedge key of a transmission wedge block, the transmission wedge block being threadedly connected to the surface of the lead screw, the lead screw being transmission-connected to the adjusting mechanism, and the adjusting mechanism driving the interference key to interfere with the inner surface of the sprocket body; the invention can easily achieve the quick-release effect of the sprocket shaft group, while satisfying the requirement of quickly reinforcing the sprocket shaft group during daily use.

Description

Technical Field

[0001] The invention relates to the technical field of sprocket shaft assemblies, in particular to a quick-detachable sprocket shaft assembly for a scraper conveyor. Background Art

[0002] The sprocket shaft assembly is one of the key components in the mechanical transmission system. It is often used in various machines and equipment to transmit power and motion. It is mainly composed of two parts: a sprocket and a shaft. The sprocket is responsible for the meshing connection with the scraper chain, while the sprocket shaft is mainly responsible for driving the sprocket to rotate, thereby achieving the transmission purpose. The sprocket shaft assembly is commonly used in industrial transportation occasions such as mining, and the device used with it is a scraper conveyor. The daily use of the sprocket shaft assembly requires a very large torque, and long-term torque provision will cause wear at the sprocket meshing position, requiring welding repair work. The current sprocket shaft assembly needs to be shut down during welding repair work, and the sprocket shaft assembly needs to be disassembled to repair the inner and outer connection positions of the sprocket.

[0003] In the prior art, the welding repair work on the sprocket shaft assembly consumes a lot of time and energy when disassembling the sprocket shaft assembly. The sprocket shaft assembly is an integral component, and there are many bolts involved in the disassembly process. Therefore, the disassembly work of the sprocket shaft in the prior art is very complicated, affecting the actual production efficiency. In addition, after long-term use, the connection position between the key and the groove of the sprocket shaft assembly will become loose due to wear, resulting in the transmission connection effect between the sprocket shaft and the sprocket being affected, and the collision between the key and the groove will further accelerate the damage rate of the sprocket shaft assembly.

[0004] Therefore, how to provide a quick-release sprocket shaft assembly for a scraper conveyor is a problem that those skilled in the art need to solve urgently. Summary of the invention

[0005] One object of the present invention is to provide a quick-release sprocket shaft assembly for a scraper conveyor. The present invention can facilitate the quick release effect of the sprocket shaft assembly and simultaneously meet the requirement of quickly reinforcing the sprocket shaft assembly during daily use.

[0006] The quick-detachable sprocket shaft assembly for a scraper conveyor according to an embodiment of the present invention comprises a sprocket body sleeved on the surface of the sprocket shaft body, an adjustment mechanism is provided on one side of the interior of the sprocket shaft body, a limiting mechanism is provided on the surface of the sprocket shaft body near the adjustment mechanism, the limiting mechanism is tightly attached to one side of the sprocket body through the adjustment mechanism, and a stabilizing mechanism and a locking mechanism are movably provided inside the sprocket shaft body;

[0007] Three groups of interference keys, the three groups of interference keys are distributed in a ring array about the axis of the lead screw, one side of the interference key is fixedly connected to the transmission wedge seat, the transmission wedge seat moves on the surface of the transmission wedge block, the transmission wedge block is threadedly connected to the surface of the lead screw, the lead screw is transmission-connected to the adjustment mechanism, and the adjustment mechanism drives the interference key to conflict with the inner surface of the sprocket body;

[0008] A one-way ratchet, wherein the one-way ratchet is fixed at the middle position of the lead screw, and a one-way locking ratchet is obliquely connected to the top of the one-way ratchet, and the one-way locking ratchet is elastically connected to the inside of the sprocket shaft through a reset spring rod. The top of the one-way locking ratchet moves with a wedge key at one end of the elastic telescopic rod, and the limiting mechanism drives the one-way locking ratchet to bite the one-way ratchet through the elastic telescopic rod, and the elastic force of the elastic telescopic rod is greater than the elastic force of the reset spring rod.

[0009] Furthermore, the stabilizing mechanism includes a lead screw and two sets of transmission wedges, and the two sets of transmission wedges are respectively threadedly sleeved on the left and right sides of the lead screw.

[0010] Furthermore, a movable cavity is provided inside the sprocket shaft near the transmission wedge block, and a sliding groove is provided inside the sprocket shaft near the interference key. The interference key is fixed to the transmission wedge seat through a connecting rod, and a stress spring is sleeved on the surface of the connecting rod. The interference key is elastically connected to the sprocket shaft through the stress spring.

[0011] Furthermore, the adjustment mechanism includes a convex key wheel and two groups of concave key wheels, the convex key wheel is fixed on one side of the sliding shaft rod, and the convex key wheel is located on the opposite side of the two groups of concave key wheels, a hexagonal slider is fixed on one side of the sliding shaft rod, and the hexagonal slider is internally rotatably connected to the push rod.

[0012] Furthermore, one side of the torque gear disc is meshed with an active tooth that moves with the end face of the sprocket shaft, and a clamping plate is also provided on the sprocket shaft near the push rod. The two groups of concave key wheels are respectively fixed on the relative end faces of the lead screw and the threaded sleeve, and the convex key wheel is docked and locked with the concave key wheel.

[0013] Furthermore, the sliding shaft rod slides through the threaded sleeve and the single set of concave key wheels, and the hexagonal slider is slidably arranged at the center position of the torque gear disc.

[0014] Furthermore, the limiting mechanism includes a movable frame and a threaded sleeve, the movable frame is threadedly connected to the surface of the threaded sleeve, the threaded sleeve is rotatably arranged inside the sprocket shaft, and the adjusting mechanism drives the movable frame to slide horizontally inside the sprocket shaft through the threaded sleeve, and three groups of locking blocks are respectively annularly fixed on the surface of the movable frame through three groups of deflectors.

[0015] Furthermore, pin keys are fixed on both sides of the locking block, and the pin keys slide in the movable groove opened on one side of the movable plate. The other side of the movable plate is movably connected to the top of the interference seat through an axle pin, and the lower sides of the interference seat are elastically connected to the sprocket shaft through a torsion spring.

[0016] Furthermore, the movable frame drives the locking block to move laterally in a slide groove provided on the surface of the sprocket shaft body, and an inner recess is provided at a position of the torsion spring close to the locking block, and the abutment seat is engaged with the surface of the locking block through the inner recess.

[0017] Furthermore, a deriving rod between a single group of the locking block and the movable frame is fixed to one end of the elastic telescopic rod, and the movable frame drives the elastic telescopic rod to slide transversely inside the sprocket shaft body through the deriving rod.

[0018] The beneficial effects of the present invention are:

[0019] The convex key wheel and the concave key wheel are provided, and the convex key wheel can be respectively connected with the concave key wheels at different positions on both sides under the push of the push rod, thereby driving the limiting mechanism or the stabilizing mechanism to loosen or clamp the inner side and the end surface of the sprocket body, making the operation more convenient. Compared with the traditional disassembly work, the required disassembly steps are greatly reduced, saving labor and improving the disassembly efficiency.

[0020] The invention provides a limiting mechanism, and under the control effect of the adjustment mechanism, the movable frame can move laterally during the rotation of the threaded sleeve, thereby pushing the locking block to move laterally, and the locking block slides with the movable groove on the surface of the movable plate through the pin key, and the abutment seat is elastically connected to the sprocket shaft body through the torsion spring. When the locking block moves, the abutment seat itself rotates under the elastic effect to abut the end face of the sprocket body. At this time, the locking block docks the groove position on one side of the abutment seat to lock the abutment seat, so that the abutment seat can better abut the end face of the sprocket body, thereby providing a reinforcement operation. Compared with the traditional fixing by bolts, the locking effect of the mortise and tenon joint is used to prevent the abutment seat from rotating, thereby replacing the bolts to achieve better fixing operation and facilitate subsequent disassembly work.

[0021] The present invention realizes transmission operation by means of the stabilizing mechanism provided, and the interference key and the keyway position of the inner wall of the sprocket body are in conflict with each other, and the lower part of the interference key slides through the transmission wedge seat and the oblique wedge on the surface of the transmission wedge block, and the transmission wedge block is subjected to the transmission effect of the lead screw and moves laterally, so that the interference key can provide a good interference force at the position of the inner keyway of the sprocket body, thereby improving the torque transmission effect, and when the interference key and the inner keyway of the sprocket body are worn and loosened laterally, the interference key can be driven to press against the inner keyway of the sprocket body again by continuously rotating the lead screw, thereby preventing the occurrence of further wear;

[0022] The locking mechanism of the present invention is provided, when the moving frame moves laterally and drives the interference seat to press against the end face of the sprocket body, it can synchronously drive the elastic telescopic rod to move laterally inside the sprocket shaft body, and one end of the elastic telescopic rod is in contact with the oblique wedge at the top of the one-way locking ratchet, pushing the one-way locking ratchet to move downward, squeezing the reset spring rod and realizing the oblique bite between the bottom of the one-way locking ratchet and the top of the one-way ratchet, and the one-way ratchet is fixed on the surface of the lead screw. In this way, during the rotation of the lead screw, the one-way ratchet will push the one-way locking ratchet to move upward, and the elastic effect of the reset spring rod itself will be deformed, realizing the purpose of the lead screw itself rotating, and the reversal of the lead screw will be affected by the one-way bite between the one-way locking ratchet and the one-way ratchet and be locked, thereby improving the reliability of the interference key against the sprocket body and preventing the interference key and the sprocket body from being easily loosened during daily work. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0024] Figure 1 This is a schematic diagram of the overall structure of the quick-detachable sprocket shaft assembly for the scraper conveyor proposed by the present invention;

[0025] Figure 2 This is a schematic diagram of the angular section structure of the quick-detachable sprocket shaft assembly for the scraper conveyor proposed by the present invention.

[0026] Figure 3 This is a schematic diagram of the internal transmission structure of the sprocket shaft body of the quick-detachable sprocket shaft assembly for the scraper conveyor proposed by the present invention.

[0027] Figure 4 This is a schematic diagram of the disassembly of the quick-detachable sprocket shaft group transmission assembly for the scraper conveyor proposed by the present invention.

[0028] Figure 5 This is a schematic diagram of the connection of the quick-detachable sprocket shaft assembly stabilizing mechanism for the scraper conveyor proposed by the present invention.

[0029] Figure 6 It is a half-section schematic diagram of the sprocket shaft body of the quick-detachable sprocket shaft assembly for the scraper conveyor proposed by the present invention.

[0030] Figure 7 It is a schematic plan cross-sectional view of the end faces of the sprocket shaft body at various positions of the quick-detachable sprocket shaft assembly for the scraper conveyor proposed by the present invention.

[0031] Figure 8 The quick-detachable sprocket shaft assembly for the scraper conveyor proposed by the present invention Figure 6 A magnified schematic diagram of the structure at point A.

[0032] Fig. 9The quick-detachable sprocket shaft assembly for the scraper conveyor proposed by the present invention Figure 6 Enlarged schematic diagram of the structure at point B.

[0033] In the figure: 1. sprocket shaft; 2. sprocket body; 3. adjustment mechanism; 4. limit mechanism; 5. stabilization mechanism; 6. locking mechanism;

[0034] 31. Sliding shaft rod; 32. Convex key wheel; 33. Hexagonal slider; 34. Push rod; 35. Concave key wheel; 36. Torque gear plate; 37. Active tooth; 41. Moving frame; 42. Lock block; 43. Pin key; 44. Movable plate; 45. Movable groove; 46. Abutment seat; 47. Torsion spring; 48. Threaded sleeve; 51. Lead screw; 52. Transmission wedge block; 53. Transmission wedge seat; 54. Abutment key; 55. Stress spring; 61. One-way ratchet; 62. One-way locking ratchet; 63. Reset spring rod; 64. Elastic telescopic rod. DETAILED DESCRIPTION

[0035] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, which only illustrate the basic structure of the present invention in a schematic manner, and therefore only show the components related to the present invention.

[0036] refer to Figure 1 and Figure 2 , including a sprocket body 2 sleeved on the surface of a sprocket shaft body 1, an adjustment mechanism 3 is provided on one side of the interior of the sprocket shaft body 1, a limit mechanism 4 is provided on the surface of the sprocket shaft body 1 near the adjustment mechanism 3, the limit mechanism 4 is tightly attached to one side of the sprocket body 2 through the adjustment mechanism 3, and a stabilizing mechanism 5 and a locking mechanism 6 are movably provided inside the sprocket shaft body 1; three groups of conflicting keys 54 are distributed in a ring array about the axis of the lead screw 51, one side of the conflicting keys 54 is fixedly connected to a transmission wedge seat 53, the transmission wedge seat 53 is movable on the surface of the transmission wedge block 52, and the transmission wedge block 52 is threadedly connected to the surface of the lead screw 51 The lead screw 51 is transmission-connected with the adjusting mechanism 3, and the adjusting mechanism 3 drives the abutment key 54 to abut against the inner surface of the sprocket body 2; the one-way ratchet 61 is fixed at the middle position of the lead screw 51, and the top of the one-way ratchet 61 is obliquely connected with a one-way locking ratchet 62, and the one-way locking ratchet 62 is elastically connected to the inside of the sprocket shaft body 1 through a reset spring rod 63, and the top of the one-way locking ratchet 62 is wedge-keyed with one end of the elastic telescopic rod 64, and the limiting mechanism 4 drives the one-way locking ratchet 62 to bite the one-way ratchet 61 through the elastic telescopic rod 64, and the elastic force of the elastic telescopic rod 64 is greater than the elastic force of the reset spring rod 63.

[0037] The sprocket body 2 is then moved back and forth, and the sprocket body 2 is ... 2, the rotation of the screw 51 during normal use is locked by the one-way ratchet 61 and the one-way locking ratchet 62, thereby fixing the screw 51 and preventing the screw 51 from loosening and causing the friction key 54 to disengage from the sprocket body 2. In addition, under the control of the adjusting mechanism 3, the limiting mechanism 4 can normally drive the locking mechanism 6 to loosen and unlock, so that the overall disassembly operation of the sprocket shaft 1 and the sprocket body 2 can be understood as firstly driving the limiting mechanism 4 to unlock one side of the sprocket body 2 through the adjusting mechanism 3, and at the same time, the locking mechanism 6 is released, and then the stabilizing mechanism 5 is released, so that the sprocket body 2 can be quickly disassembled on the surface of the sprocket shaft 1 without relying on the fixation of bolts and other components. Compared with traditional technical means, it can meet the quick disassembly effect while ensuring the overall stable transmission, which is convenient for maintenance operations and greatly reduces the time required for welding maintenance.

[0038] refer to Figure 3 , Figure 4 , Figure 5 and Figure 7 The stabilizing mechanism 5 includes a lead screw 51 and two sets of transmission wedges 52, which are respectively threadedly sleeved on the left and right sides of the lead screw 51. An active cavity is provided inside the sprocket shaft body 1 near the transmission wedges 52, and a slide groove is provided near the contact key 54 of the sprocket shaft body 1. The contact key 54 is fixed to the transmission wedge seat 53 through a connecting rod, and a stress spring 55 is sleeved on the surface of the connecting rod, and the contact key 54 is elastically connected to the sprocket shaft body 1 through the stress spring 55.

[0039] In the present embodiment, three groups of interference keys 54 correspond to the connection of a single group of transmission wedge blocks 52, so that the two groups of transmission wedge blocks 52 correspond to a total of six groups of interference keys 54 inside the entire device. The six groups of interference keys 54 move simultaneously on the surface of the sprocket shaft 1 to interfere with the key groove position on the inner side of the sprocket body 2, thereby realizing the transmission connection between the sprocket body 2 and the sprocket shaft 1. When the lead screw 51 rotates, the transmission wedge block 52 is forced to move laterally. When the transmission wedge seat 53 is in contact with the surface of the transmission wedge block 52, the movement of the transmission wedge block 52 will squeeze the interference key 54 to move outward. Otherwise, elastic reset is achieved through the stress spring 55. The overall operation is simple, and the purpose of quick disassembly and quick installation is achieved.

[0040] refer to Figure 2 , Figure 4 , Figure 6 and Fig. 9 The adjustment mechanism 3 includes a convex key wheel 32 and two groups of concave key wheels 35. The convex key wheel 32 is fixed on one side of the sliding shaft rod 31, and the convex key wheel 32 is located on the opposite side of the two groups of concave key wheels 35. A hexagonal slider 33 is fixed on one side of the sliding shaft rod 31, and the hexagonal slider 33 is internally rotatably connected to the push rod 34. One side of the torque toothed disc 36 is meshed with an active tooth 37 that moves with the end face of the sprocket shaft body 1. A clamping plate is also provided near the position of the sprocket shaft body 1 near the push rod 34. The two groups of concave key wheels 35 are respectively fixed at the opposite end faces of the lead screw 51 and the threaded sleeve 48, and the convex key wheel 32 and the concave key wheel 35 are docked and stuck. The sliding shaft rod 31 slides through the threaded sleeve 48 and the single group of concave key wheels 35, and the hexagonal slider 33 is slidably set at the center of the torque toothed disc 36.

[0041] The cam 32 is then engaged with the drive lever 34 and the drive lever 36 is engaged with the drive lever 36, thereby releasing the cam 32 and releasing the cam 32.

[0042] refer to Figure 3 , Figure 4 and Fig. 9The limiting mechanism 4 includes a moving frame 41 and a threaded sleeve 48. The moving frame 41 is threadedly connected to the surface of the threaded sleeve 48. The threaded sleeve 48 is rotatably arranged inside the sprocket shaft body 1. The adjusting mechanism 3 drives the moving frame 41 to slide horizontally inside the sprocket shaft body 1 through the threaded sleeve 48. Three groups of locking blocks 42 are respectively fixedly arranged on the surface of the moving frame 41 through three groups of diverters. Pin keys 43 are fixed on both sides of the locking block 42. The pin keys 43 slide inside the movable groove 45 opened on one side of the movable plate 44. The other side of the movable plate 44 is movably connected to the top of the abutment seat 46 through the shaft pin. The lower sides of the abutment seat 46 are elastically connected to the sprocket shaft body 1 through the torsion spring 47. The moving frame 41 drives the locking block 42 to move horizontally in the slide groove opened on the surface of the sprocket shaft body 1. The torsion spring 47 is provided with an inner recess near the locking block 42. The abutment seat 46 is clamped with the surface of the locking block 42 through the inner recess.

[0043] In this embodiment, the movable frame 41 is affected by the rotation of the threaded sleeve 48, which will produce a lateral movement effect inside the sprocket shaft body 1, so that the locking block 42 is driven to move closer to or away from the abutment seat 46. The abutment seat 46 itself moves between the axle pin and the movable groove 45, and a torsion spring 47 is provided between the lower part of the abutment seat 46 and the sprocket shaft body 1. When the locking block 42 moves laterally, the pin key 43 slides in the movable groove 45 on one side of the movable plate 44, and the position of the movable plate 44 itself is under the elastic effect of the torsion spring 47. The locking block 42 is then engaged with the inner recess on the surface of the locking block 46. At this time, the locking block 46 is restricted, and the reaction force provided by the sprocket body 2 to the locking block 46 cannot drive the locking block 46 to rotate, thereby achieving a fixed operation. When the locking block 42 is pulled in the reverse direction, the movable groove 45 can provide a movable space. After being pulled a certain distance, the locking block 46 is turned over. The overall fixing effect can be effectively achieved while ensuring a quick release effect.

[0044] refer to Figure 4 and Fig. 9 The deriving rod between the single-group locking block 42 and the moving frame 41 is fixed to one end of the elastic telescopic rod 64, and the moving frame 41 drives the elastic telescopic rod 64 to slide horizontally inside the sprocket shaft body 1 through the deriving rod.

[0045] In this embodiment, the movement of the movable frame 41 simultaneously drives the elastic telescopic rod 64 to move laterally, so that it contacts with the one-way locking ratchet 62 to achieve a resistance effect.

[0046] Working principle: First, the sprocket shaft body 1 rotates as a whole, and the sprocket body 2 is driven to rotate through the interference key 54 in the stabilizing mechanism 5 to achieve the basic working effect of the scraper conveyor. When disassembly is required, the push rod 34 in the adjusting mechanism 3 is pulled to drive the hexagonal slider 33 and the sliding shaft rod 31 to move horizontally as a whole. The convex key wheel 32 on one side of the sliding shaft rod 31 is docked and stuck with the concave key wheel 35 on the side of the threaded sleeve 48 in the limiting mechanism 4. At this time, the active tooth 37 is rotated, and the active tooth 37 is engaged with the torque gear plate 36, so that the torque gear plate 36 drives the hexagonal slider 33 and the sliding shaft rod 31 to rotate as a whole. At this time, the threaded sleeve 48 rotates under the limiting effect of the docking and stuck, and the moving frame 41 as a whole moves horizontally under the effect of the threaded transmission, driving the locking block 42 away from the interference seat 46, and the pin keys 43 on both sides of the locking block 42 slide in the active grooves 45 opened on the surface of the movable plate 44, and the interference seat 46 as a whole remains stationary at this time. The locking mechanism 6 is then retracted so that the locking member 42 is in a state of being moved and ...

[0047] The above are only preferred specific implementation modes of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical solutions and inventive concepts of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. The quick-release sprocket shaft assembly for scraper conveyor is characterized by: It comprises a sprocket body (2) sleeved on the surface of a sprocket shaft body (1), an adjusting mechanism (3) is arranged on one side of the interior of the sprocket shaft body (1), a limiting mechanism (4) is arranged on the surface of the sprocket shaft body (1) near the adjusting mechanism (3), the limiting mechanism (4) is tightly attached to one side of the sprocket body (2) through the adjusting mechanism (3), and a stabilizing mechanism (5) and a locking mechanism (6) are movably arranged inside the sprocket shaft body (1); The stabilizing mechanism (5) comprises a lead screw (51), two groups of transmission wedges (52), and three groups of abutment keys (54). The three groups of abutment keys (54) are arranged in a ring array about the axis of the lead screw (51). The two groups of transmission wedges (52) are respectively threadedly sleeved on the left and right sides of the lead screw (51). One side of the abutment keys (54) is fixedly connected to the transmission wedges (52). The transmission wedges (52) move on the surface of the transmission wedge seat (53). The lead screw (51) is transmission-connected to the adjusting mechanism (3). The adjusting mechanism (3) drives the abutment keys (54) to abut against the inner surface of the sprocket body (2). The locking mechanism (6) comprises a one-way ratchet (61), the one-way ratchet (61) being fixed at a middle position of the lead screw (51), the top of the one-way ratchet (61) being obliquely engaged with a one-way locking ratchet (62), the one-way locking ratchet (62) being elastically connected to the inside of the sprocket shaft (1) via a return spring rod (63), one end of an elastic telescopic rod (64) being movable with a wedge key at the top of the one-way locking ratchet (62), the limiting mechanism (4) driving the one-way locking ratchet (62) to engage with the one-way ratchet (61) via the elastic telescopic rod (64), the elastic force of the elastic telescopic rod (64) being greater than the elastic force of the return spring rod (63); The adjustment mechanism (3) comprises a convex key wheel (32) and two groups of concave key wheels (35), wherein the convex key wheel (32) is fixed to one side of the sliding shaft rod (31), and the convex key wheel (32) is located on the opposite side of the two groups of concave key wheels (35), a hexagonal slider (33) is fixed to one side of the sliding shaft rod (31), the hexagonal slider (33) is internally rotatably connected to a push rod (34), and a driving tooth (37) that is movable with the end surface of the sprocket shaft body (1) is meshed on one side of the torque toothed disc (36). The sprocket shaft (1) is also provided with a clamping plate near the push rod (34), the two groups of concave key wheels (35) are respectively fixed to the opposite end surfaces of the lead screw (51) and the threaded sleeve (48) of the limiting mechanism (4), the convex key wheel (32) is engaged with the concave key wheel (35), the sliding shaft rod (31) slides through the threaded sleeve (48) and the concave key wheel (35) thereon, and the hexagonal slider (33) is slidably arranged at the center of the torque gear disc (36).

2. The quick-release sprocket shaft assembly for a scraper conveyor according to claim 1, characterized in that: The limiting mechanism (4) comprises a movable frame (41) and a threaded sleeve (48); the movable frame (41) is threadedly connected to the surface of the threaded sleeve (48); the threaded sleeve (48) is rotatably arranged inside the sprocket shaft body (1); the adjusting mechanism (3) drives the movable frame (41) to slide horizontally inside the sprocket shaft body (1) through the threaded sleeve (48); three groups of locking blocks (42) are respectively annularly fixed on the surface of the movable frame (41) through three groups of connecting rods; pin keys (43) are fixed on both sides of the locking blocks (42); the pin keys (43) slide inside a movable groove (45) provided on one side of a movable plate (44); the other side of the movable plate (44) is connected to the movable plate (44) through a shaft pin. The top of the abutment seat (46) is movably connected, and the bottom of both sides of the abutment seat (46) are elastically connected to the sprocket shaft (1) through torsion springs (47). The movable frame (41) drives the locking block (42) to move horizontally in a slide groove provided on the surface of the sprocket shaft (1). The torsion spring (47) is provided with an inner recess near the locking block (42). The abutment seat (46) is engaged with the surface of the locking block (42) through the inner recess. The connecting rod between the locking block (42) and the movable frame (41) is fixed to one end of the elastic telescopic rod (64). The movable frame (41) drives the elastic telescopic rod (64) to slide horizontally inside the sprocket shaft (1) through the connecting rod.

3. The quick-release sprocket shaft assembly for a scraper conveyor according to claim 2, characterized in that: An active cavity is provided inside the sprocket shaft body (1) near the transmission wedge block (52), a slide groove is provided inside the sprocket shaft body (1) near the abutment key (54), the abutment key (54) is fixed to the transmission wedge seat (53) via a connecting rod, a stress spring (55) is sleeved on the surface of the connecting rod, and the abutment key (54) is elastically connected to the sprocket shaft body (1) via the stress spring (55).

Images