Shaft end mechanism of discharging end of spiral conveyor

Abstract

The utility model discloses a shaft end mechanism of a discharge end of a screw conveyer, which relates to the technical field of screw conveyors and comprises a machine body, a power motor arranged on one side of the discharge end of the machine body, a rotating shaft inserted in the machine body, a driven chuck sleeved at the tail end of the rotating shaft, and a driving chuck clamped on the surface of the driven chuck. A transmission assembly is inserted into the driving chuck and comprises a power shaft inserted into the inner side of the driving chuck, a rotating shaft is arranged at the other end of the power shaft, a sleeve connected with the driving chuck is arranged in the power shaft, and a plurality of springs are arranged in the equipment cavity around the sleeve. When too many materials are put into the machine body or the rotating shaft generates large resistance due to jamming, connection between the driving chuck and the driven chuck is interrupted, and at the moment, the driving chuck continues to rotate under driving of the power shaft connected with the power motor; in the rotating process, a connecting block on the surface of the driving chuck and a groove in the surface of the driven chuck hit to generate sound, and an operator is prompted that hidden dangers exist in the machine body.

Description

Technical Field

[0001] This utility model relates to the field of screw conveyor technology, and in particular to a shaft end mechanism at the discharge end of a screw conveyor. Background Technology

[0002] A screw conveyor is a continuous conveying device that uses rotating helical blades to propel materials. It is widely used for conveying granular or powdery materials.

[0003] Most screw conveyors use a motor to drive the screw blades to rotate via a coupling or belt through a shaft. During this process, the material enters the conveyor through a feeder and is conveyed by the rotating screw blades until it reaches the discharge end and is discharged. If the feeder's feeding speed does not match the conveyor's conveying speed, a large amount of material may accumulate inside the conveyor, increasing its load. If the load inside the conveyor is too large, the motor connected to the conveyor may fail due to the load exceeding its capacity, or even the shaft of the screw blades installed inside the conveyor may deform. Utility Model Content

[0004] To address the aforementioned problems, the purpose of this utility model is to provide a shaft end mechanism for the discharge end of a screw conveyor, which solves the problem that the motor connected to the shaft may malfunction due to excessive load during the use of the screw conveyor, or even cause the shaft to deform.

[0005] The technical solution of this utility model is: a shaft end mechanism for the discharge end of a screw conveyor, including a machine body, a power motor is provided on one side of the discharge end of the machine body, a flange is provided at the end of the machine body, and a support frame is provided on the surface of the flange.

[0006] A rotating shaft is inserted into the body of the machine. The rotating shaft passes through the body and the flange and extends outward. A passive chuck is sleeved at the end of the rotating shaft. An active chuck is engaged on the surface of the passive chuck. A transmission component is inserted inside the active chuck. The transmission component is connected to the power motor. The transmission component is rotatably connected to the support frame through a rotating shaft.

[0007] The transmission assembly includes a power shaft inserted into the inside of the drive chuck. A pulley for connecting a belt is provided on the surface of the power shaft. A device cavity is opened at one end of the power shaft extending into the inside of the drive chuck. A rotating shaft is provided at the other end of the power shaft. A sleeve connected to the drive chuck is provided inside the device cavity. Several springs are arranged around the sleeve in the device cavity. A locking block is provided on the side of the drive chuck covering the power shaft. A locking groove is opened on the surface of the power shaft corresponding to the locking block.

[0008] Furthermore, the connection position between the rotating shaft and the passive chuck is stepped, and a pin hole is provided between the rotating shaft and the passive chuck in the stepped part. A bolt is inserted into the pin hole, and the rotating shaft and the passive chuck are connected by the bolt pin, which ensures that the connection between the rotating shaft and the passive chuck is stable. At the same time, the rotating shaft and the passive chuck can be quickly connected by removing and installing the bolt.

[0009] Furthermore, the surface of the active chuck is circumferentially distributed with several staggered connecting blocks. The surface of the passive chuck has grooves that fit with the connecting blocks. The active chuck engages with the passive chuck through the connecting blocks fitting into the grooves. The connecting blocks are trapezoidal block structures, and each connecting block has an inclined surface at its bottom to ensure that the active chuck can smoothly drive the passive chuck to rotate. At the same time, when the passive chuck generates significant resistance, the connecting blocks can slide outward and push the active chuck backward during the sliding process.

[0010] Furthermore, a gap is left between the power shaft and the active chuck, and the gap distance is adapted to the length of the connecting block on the surface of the active chuck to prevent the movement of the active chuck from being blocked by the power shaft.

[0011] Furthermore, the chuck blocks on the inner wall of the active chuck are arranged in a ring at uniform intervals around the inner wall.

[0012] Furthermore, the length of the slot is greater than the length of the connecting block on the surface of the active chuck, and the movable distance of the block within the slot is adapted to the length of the connecting block, ensuring that the active chuck is not obstructed during movement.

[0013] Furthermore, the two ends of the spring are respectively connected to the inner wall of the equipment cavity and the active chuck. The spring is always in a relaxed state, generating a thrust on the active chuck. The sum of the thrust of several springs is adapted to the maximum load of the power motor. When the passive chuck generates resistance greater than the maximum load of the power motor, the active chuck can overcome the thrust of the spring and move under the push of the connecting block, causing the engagement between the active chuck and the passive chuck to fail. This allows the active chuck to idle under the action of the power shaft, releasing the excessive load on the power motor at this time.

[0014] The beneficial effects of this utility model are as follows:

[0015] When too much material is added to the machine or when the rotating shaft becomes jammed and generates significant resistance, the connection between the active chuck and the passive chuck is interrupted, preventing the active chuck from continuing to drive the passive chuck to rotate and thus causing the rotating shaft to continue rotating. At this time, the active chuck continues to rotate under the drive of the power shaft connected to the power motor. During the rotation, the connecting block on the surface of the active chuck strikes the groove on the surface of the passive chuck, producing a sound. This alerts the operator that there is a potential hazard inside the machine, allowing the operator to stop the machine in time for handling, and preventing the power motor from running continuously under high load, which could lead to damage or deformation of the rotating shaft, affecting subsequent use. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the active chuck and passive chuck of this utility model in a mating state;

[0018] Figure 3 This is a schematic diagram of the passive chuck connection structure of this utility model;

[0019] Figure 4 This is a cross-sectional schematic diagram of the active chuck structure of this utility model.

[0020] Reference numerals in the attached drawings: 1. Machine body; 2. Power motor; 3. Flange; 4. Support frame; 5. Rotating shaft; 6. Passive chuck; 7. Active chuck; 8. Transmission assembly; 81. Power shaft; 82. Pulley; 83. Equipment cavity; 84. Sleeve; 85. Spring; 86. Clamping block; 87. Slot. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0022] like Figure 1-4 As shown, a shaft end mechanism for the discharge end of a screw conveyor includes a body 1, a power motor 2 is provided on one side of the discharge end of the body 1, a flange 3 is provided at the end of the body 1, and a support frame 4 is provided on the surface of the flange 3.

[0023] A rotating shaft 5 is inserted inside the body 1. The rotating shaft 5 extends outward through the body 1 and the flange 3. A passive chuck 6 is fitted at the end of the rotating shaft 5. The fitting position between the rotating shaft 5 and the passive chuck 6 is stepped. A pin hole is provided between the rotating shaft 5 and the passive chuck 6 in the stepped part. A bolt is inserted into the pin hole. The rotating shaft 5 and the passive chuck 6 are connected by the bolt, which ensures that the connection between the rotating shaft 5 and the passive chuck 6 is stable. At the same time, the rotating shaft 5 and the passive chuck 6 can be quickly connected by removing and installing the bolt.

[0024] The passive chuck 6 has an active chuck 7 attached to its surface. The active chuck 7 has several interlocking connecting blocks arranged in a ring on its surface. The passive chuck 6 has grooves on its surface that fit the connecting blocks. The active chuck 7 is engaged with the passive chuck 6 by the connecting blocks fitting into the grooves. The connecting blocks are trapezoidal in shape, and each connecting block has an inclined surface at its bottom to ensure that the active chuck 7 can smoothly drive the passive chuck 6 to rotate. At the same time, when the passive chuck 6 generates significant resistance, the connecting blocks can slide outward and push the active chuck 7 backward during the sliding process. The active chuck 7 has a transmission component 8 inserted inside. The transmission component 8 is connected to the power motor 2. The transmission component 8 is rotatably connected to the support frame 4 through a rotating shaft.

[0025] The transmission assembly 8 includes a drive shaft 81 inserted into the inside of the drive chuck 7. A gap is maintained between the drive shaft 81 and the drive chuck 7, the gap being adapted to the length of the connecting block on the surface of the drive chuck 7 to prevent the movement of the drive chuck 7 from being blocked by the drive shaft 81. A pulley 82 for connecting a belt is provided on the surface of the drive shaft 81. One end of the drive shaft 81 extending into the drive chuck 7 has a device cavity 83, and the other end has a rotating shaft. A sleeve 84 connected to the drive chuck 7 is provided inside the device cavity 83. Several springs 85 are arranged around the sleeve 84 in the device cavity 83. 5 is connected to the inner wall of the equipment cavity 83 and the active chuck 7 at both ends respectively. The spring 85 is always in a relaxed state and generates a thrust on the active chuck 7. The total thrust of several springs 85 is adapted to the maximum load of the power motor 2. When the passive chuck 6 generates resistance greater than the maximum load of the power motor 2, the active chuck 7 can overcome the thrust of the spring 85 and squeeze the spring 85 to move under the push of the connecting block. This causes the engagement between the active chuck 7 and the passive chuck 6 to fail, so that the active chuck 7 can rotate freely under the action of the power shaft 81, releasing the excessive load on the power motor 2 at this time.

[0026] The active chuck 7 has a locking block 86 on one side covering the power shaft 81. The locking blocks 86 on the inner wall of the active chuck 7 are evenly spaced in a ring around the inner wall. The surface of the power shaft 81 has a slot 87 corresponding to the locking block 86. The length of the slot 87 is greater than the length of the connecting block on the surface of the active chuck 7. The movable distance of the locking block 86 in the slot 87 is adapted to the length of the connecting block, ensuring that the active chuck 7 will not be obstructed during movement.

[0027] Working principle of this utility model:

[0028] If jamming or excessive filling causes an increase in the working load of the rotating shaft 5 during the operation of the machine body 1, the connecting block on the surface of the active chuck 7 disengages from the groove of the passive chuck 6 when the active chuck 7 drives the passive chuck 6 to rotate. The connecting block abuts against the surface of the passive chuck 6 and pushes the active chuck 7 to move backward. During the movement, the locking block 86 moves synchronously along the locking groove 87. At the same time, the spring 85 between the active chuck 7 and the power shaft 81 is compressed and contracted, so that the active chuck 7 can no longer drive the rotating shaft 5 to move through the passive chuck 6. The active chuck 7 still rotates through the connection of the pulley 82 and the power motor 2. The connecting block on the surface of the rotating active chuck 7 continues to move while abutting the passive chuck 6, and an audible sound is emitted during the movement to prompt the operator to stop the machine for maintenance.

[0029] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A shaft end mechanism for the discharge end of a screw conveyor, comprising a body (1), wherein a power motor (2) is provided on one side of the discharge end of the body (1), characterized in that: The end of the body (1) is provided with a flange (3), and a support frame (4) is provided on the surface of the flange (3). A rotating shaft (5) is inserted inside the body (1). The rotating shaft (5) extends outward through the body (1) and the flange (3). A passive chuck (6) is sleeved at the end of the rotating shaft (5). An active chuck (7) is clamped on the surface of the passive chuck (6). A transmission assembly (8) is inserted inside the active chuck (7). The transmission assembly (8) is connected to the power motor (2). The transmission assembly (8) is rotatably connected to the support frame (4) through a rotating shaft. The transmission assembly (8) includes a power shaft (81) inserted into the inside of the active chuck (7). A pulley (82) for connecting a belt is provided on the surface of the power shaft (81). A device cavity (83) is opened at one end of the power shaft (81) extending into the inside of the active chuck (7). A rotating shaft is provided at the other end of the power shaft (81). A sleeve (84) connected to the active chuck (7) is provided inside the device cavity (83). A number of springs (85) are provided around the sleeve (84) in the device cavity (83). A locking block (86) is provided on one side of the active chuck (7) covering the power shaft (81). A slot (87) is opened on the surface of the power shaft (81) corresponding to the locking block (86).

2. The shaft end mechanism at the discharge end of a screw conveyor according to claim 1, characterized in that: The rotating shaft (5) and the passive chuck (6) are connected in a stepped manner. A pin hole is provided between the rotating shaft (5) and the passive chuck (6) in the stepped part. A bolt is inserted into the pin hole and the rotating shaft (5) and the passive chuck (6) are connected by the bolt pin.

3. The shaft end mechanism at the discharge end of a screw conveyor according to claim 1, characterized in that: The active chuck (7) has several interlocking connecting blocks distributed in a ring on its surface. The passive chuck (6) has grooves on its surface that fit the connecting blocks. The active chuck (7) engages with the passive chuck (6) by fitting the connecting blocks into the grooves. The connecting blocks are trapezoidal block structures, and each connecting block has an inclined surface at its bottom.

4. The shaft end mechanism at the discharge end of a screw conveyor according to claim 3, characterized in that: There is a gap between the power shaft (81) and the active chuck (7), and the gap distance is adapted to the length of the connecting block on the surface of the active chuck (7).

5. The shaft end mechanism at the discharge end of a screw conveyor according to claim 1, characterized in that: The chuck blocks (86) on the inner wall of the active chuck (7) are arranged in a ring at uniform intervals around the inner wall.

6. The shaft end mechanism at the discharge end of a screw conveyor according to claim 3, characterized in that: The length of the slot (87) is greater than the length of the connecting block on the surface of the active chuck (7), and the movable distance of the block (86) within the slot (87) is adapted to the length of the connecting block.

7. The shaft end mechanism at the discharge end of a screw conveyor according to claim 1, characterized in that: The two ends of the spring (85) are respectively connected to the inner wall of the equipment cavity (83) and the active chuck (7). The spring (85) always remains in a relaxed state to generate thrust on the active chuck (7). The total thrust of the springs (85) is matched with the maximum load of the power motor (2).

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