A hand / automatic discharge height adjusting device for a hopper feeder

Abstract

The utility model provides a hopper feeder hand / self -use two -purpose discharge height adjusting device, and height adjusting device includes torque transmission shaft and two groups of worm gear assemblies, worm gear assemblies include meshing transmission's worm wheel and worm, and the both ends of torque transmission shaft are connected with two worm wheels through universal joint connecting rod respectively and rotate synchronously with worm wheel, one worm wheel passes through electromagnetic clutch and reduction motor transmission connection, and another worm wheel is fixedly connected with hand wheel, and the worm of two groups of worm gear assemblies is fixedly connected with gate through connecting rod. The device realizes the quick switching of automatic and manual mode through electromagnetic clutch, realizes the high -efficient automatic regulation under the conventional working condition through reduction motor, reduces manual operation, can switch to manual mode immediately when the motor is in trouble, and the device adopts worm gear assembly with self -locking function to replace traditional gear rack, can effectively prevent the gate from falling down in the non -regulation state, and eliminates the security risk.

Description

Technical Field

[0001] This utility model relates to the field of bucket feeder technology, and in particular to a bucket feeder manual / automatic discharge height adjustment device. Background Technology

[0002] In large-scale nut drying operations, bucket feeders are typically used in conjunction with continuous dryers. To ensure ideal drying results, it is crucial to strictly control the nut stack height (i.e., the discharge material layer height) after the bucket feeder discharges. Currently, the industry mainly uses two methods to control the discharge height of bucket feeders, but both have significant drawbacks: The first type is the mechanical combination of "gears and racks + handwheels". The operator manually turns the handwheel to control the height of the discharge gate of the bucket feeder, thereby adjusting the discharge height. Although this method has a short operation time and fast adjustment speed, the gear and rack structure does not have a self-locking function, so there is a risk that the gate will fall downwards during the operation of the bucket feeder. At the same time, the gate height must be manually readjusted every time the drying material is changed, which is cumbersome, time-consuming and labor-intensive, resulting in high labor costs.

[0003] The second type is the "gear and rack + geared motor" combination method. This method uses a geared motor to drive the gear and rack instead of a handwheel, achieving automatic adjustment of the gate height. This method offers fast response, short adjustment time, and significantly reduces manual operation. However, if the geared motor malfunctions, or in special situations requiring temporary manual adjustments, the lack of a manual adjustment channel prevents adjustment of the discharge gate height, directly causing drying operations to be interrupted and affecting production progress.

[0004] In view of the shortcomings of the existing technology, there is an urgent need to design a bucket feeder discharge height adjustment device that combines automatic adjustment efficiency with manual adjustment emergency capability and safety self-locking function, so as to meet the stable production needs of large-scale nut drying operations. Utility Model Content

[0005] In view of the shortcomings of the prior art described above, the purpose of this utility model is to provide a manual / automatic discharge height adjustment device for bucket feeders, which solves the problems of poor self-locking and lack of emergency adjustment capability in the gate height adjustment method of bucket feeders in the prior art.

[0006] To achieve the above and other related objectives, this utility model provides a bucket feeder manual / automatic discharge height adjustment device, comprising a bucket feeder body and a height adjustment device. A gate is movably installed at the discharge port of the bucket feeder body, and the gate is raised and lowered by the height adjustment device. The height adjustment device includes a torque transmission shaft and two sets of worm gear assemblies. The worm gear assembly includes a meshing worm wheel and a worm. The two ends of the torque transmission shaft are respectively connected to the two worm wheels through universal joint couplings and rotate synchronously with the worm wheels. One worm wheel is driven by a reduction motor through an electromagnetic clutch, and the other worm wheel is fixedly connected to a handwheel. The worms in both sets of worm gear assemblies are fixedly connected to the gate through connecting rods.

[0007] In one embodiment of the present invention, a gate low limit switch and a gate height limit switch are provided on the outer side of the discharge surface of the bucket feeder body, and are electrically connected to the geared motor respectively.

[0008] In one embodiment of the present invention, a material layer height indicator needle is provided on the outer side of the discharge surface of the bucket feeder body. The material layer height indicator needle can be adjusted up and down, and the adjustment trajectory corresponds to the height adjustment trajectory of the gate.

[0009] In one embodiment of this utility model, the gate low limit switch is used to detect the minimum height of the gate. When the gate triggers the gate low limit switch, the gate low limit switch sends a stop signal to the geared motor, and the geared motor stops running.

[0010] In one embodiment of this utility model, the gate height reach switch is used to detect whether the gate has reached the preset height corresponding to the material layer height indicator needle. When the gate triggers the gate height reach switch, the gate height reach switch sends a stop signal to the reduction motor, and the reduction motor stops running.

[0011] In one embodiment of this utility model, all the worm gear assemblies have a self-locking function.

[0012] In one embodiment of the present invention, the upper end of the connecting rod is mechanically fixedly connected to the worm gear, and the lower end of the connecting rod is mechanically fixedly connected to the gate.

[0013] In one embodiment of the present invention, a guide member is sleeved at the middle position of the torque transmission shaft. The guide member is installed on the outer side of the discharge surface of the bucket feeder body by a bracket, and the inner hole of the guide member is clearance-fitted with the outer circle of the torque transmission shaft.

[0014] As described above, the bucket feeder manual / automatic discharge height adjustment device of this utility model has the following beneficial effects: 1. This device achieves rapid switching between automatic and manual modes through an electromagnetic clutch. Under normal operating conditions, efficient automatic adjustment can be achieved through a geared motor, reducing manual operation. When the motor fails, the electromagnetic clutch is de-energized, and the device can immediately switch to manual mode to avoid interruption of the drying operation, thus solving the problem of the lack of emergency response capability in the existing purely automatic adjustment method.

[0015] 2. This device uses a worm gear assembly with self-locking function to replace the traditional gear rack, which can effectively prevent the gate from falling downwards when not in the adjustment state, eliminating safety hazards; at the same time, the worm gears at both ends are synchronously driven with the universal joint coupling through the torque transmission shaft, avoiding jamming caused by the gate tilting on one side, and improving adjustment stability.

[0016] 3. This device is equipped with a material layer height indicator that can be adjusted up and down, enabling visual preset and precise positioning of the gate height, ensuring that the discharge material layer height meets the process requirements for nut drying; in conjunction with a low-level limit switch, it further enhances the safety of equipment operation and avoids mechanical collisions.

[0017] 4. The connection of each component of this device is simple. Switching modes only requires controlling the electromagnetic clutch power supply, and manual adjustment only requires turning the handwheel. No complicated disassembly or operation is required, which reduces the threshold for operators. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of the bucket feeder manual / automatic discharge height adjustment device disclosed in this utility model.

[0019] Figure 2 This is a front view schematic diagram of the manual / automatic discharge height adjustment device for the bucket feeder disclosed in this utility model.

[0020] Figure 3 This is a side view of the bucket feeder manual / automatic discharge height adjustment device disclosed in this utility model.

[0021] Figure 4 for Figure 2 Enlarged diagram of point A in the middle.

[0022] Figure 5 This is a top view schematic diagram of the manual / automatic discharge height adjustment device for the bucket feeder disclosed in this utility model.

[0023] Component designation explanation 1. Gear motor; 2. Handwheel; 3. Worm gear assembly; 4. Guide component; 5. Electromagnetic clutch; 6. Torque transmission shaft; 7. Universal joint coupling; 8. Connecting rod; 9. Gate; 10. Gate low limit switch; 11. Gate height limit switch; 12. Material layer height indicator; 13. Bucket feeder body. Detailed Implementation

[0024] The following specific embodiments illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. It should be noted that, unless otherwise specified, the following embodiments and features can be combined with each other.

[0025] Please see Figures 1-5 This utility model provides a bucket feeder manual / automatic discharge height adjustment device, including a bucket feeder body 13 and a height adjustment device. The bucket feeder body 13 is shaped like a bucket. The upper end of the bucket feeder body 13 is the feed inlet, and the lower end of the bucket is the discharge outlet. A gate 9 is movably installed at the discharge outlet, and the gate 9 is raised and lowered by the height adjustment device.

[0026] Specifically, the height adjustment device includes a torque transmission shaft 6 and two sets of worm gear assemblies 3. Each worm gear assembly 3 has the same structure, including a meshing worm wheel and a worm, and has a self-locking function, which can effectively prevent the gate 9 from falling downwards in the non-adjusted state, improving the safety of equipment operation. The left and right ends of the torque transmission shaft 6 are connected to the worm wheels of the two sets of worm gear assemblies 3 through universal joint couplings 7, and rotate synchronously with the worm wheels. Among them, the worm wheel of the right worm gear assembly 3 is connected to the reduction motor 1 through an electromagnetic clutch 5, and the worm wheel of the left worm gear assembly 3 is fixedly connected to the handwheel 2; and the worms in both sets of worm gear assemblies 3 are fixedly connected to the gate 9 through connecting rods 8.

[0027] Furthermore, the upper end of the connecting rod 8 is mechanically fixedly connected to the worm gear, and the lower end of the connecting rod 8 is mechanically fixedly connected to the gate 9.

[0028] Furthermore, a guide 4 is sleeved at the middle position of the torque transmission shaft 6. The guide 4 is installed on the outer side of the discharge surface of the bucket feeder body 13 through a bracket. The inner hole of the guide 4 is clearance-fitted with the outer circle of the torque transmission shaft 6.

[0029] Furthermore, the outer side of the discharge surface of the bucket feeder body 13 is equipped with a gate low limit switch 10 and a gate height control switch 11, which are electrically connected to the geared motor 1 respectively. The outer side of the discharge surface of the bucket feeder body 13 is also equipped with a material layer height indicator 12, which can be adjusted up and down, and its adjustment trajectory corresponds to the height adjustment trajectory of the gate 9. By adjusting the height of the material layer height indicator 12, the height of the gate 9 can be visually preset and precisely positioned, ensuring that the discharge material layer height meets the process requirements for nut drying; combined with the low limit switch, this further enhances the safety of equipment operation and avoids mechanical collisions.

[0030] Automatic adjustment mode (normal operating conditions): When automatic adjustment is required, the geared motor 1 and the electromagnetic clutch 5 are energized. The electromagnetic clutch 5 engages, transmitting the torque of the geared motor 1 to the worm wheel of the right worm gear assembly 3. The rotation of the right worm wheel drives its corresponding worm to move up and down. At the same time, through the transmission action of the torque transmission shaft 6 and the two universal joint couplings 7, the worm wheel in the left worm gear assembly 3 rotates synchronously, driving its corresponding worm to move up and down synchronously. Since the worms on both sides are connected to the gate 9 through the connecting rod 8, the synchronous movement of the worms drives the gate 9 to move up and down, thereby adjusting the discharge material layer height.

[0031] When the gate 9 rises to the preset height corresponding to the material layer height indicator needle 12, the gate height limit switch 11 is triggered, which sends a stop signal to the reduction motor 1. The reduction motor 1 stops running, and the gate 9 stops at the target height, completing the automatic adjustment. If the gate 9 moves downward to the lowest height, the gate low limit switch 10 is triggered, which also sends a stop signal to the reduction motor 1 to prevent the gate 9 from moving too far downward.

[0032] Manual adjustment mode (emergency / special operating conditions): When the geared motor 1 malfunctions, or when it is necessary to temporarily adjust the height of the gate 9 manually, the power supply to the electromagnetic clutch 5 is cut off. After the electromagnetic clutch 5 is de-energized, the transmission connection between the geared motor 1 and the right worm gear is disconnected. At this time, the operator turns the left handwheel 2, which drives the left worm gear to rotate. Through the transmission of the torque transmission shaft 6 and the universal joint coupling 7, the right worm gear rotates synchronously, thereby driving the left and right worms to move up and down synchronously. The worms drive the gate 9 to move up and down through the connecting rod 8, thus realizing manual adjustment.

[0033] In summary, this invention achieves rapid switching between automatic and manual modes through the electromagnetic clutch 5, and under normal operating conditions, efficient automatic adjustment is achieved through the geared motor 1, reducing manual operation. When the motor malfunctions, it can immediately switch to manual mode. Furthermore, this device uses a worm gear assembly 3 with a self-locking function instead of the traditional gear and rack, effectively preventing the gate 9 from falling downwards in the non-adjusted state and eliminating safety hazards. Therefore, this invention effectively overcomes the various shortcomings of the prior art and has high industrial application value.

[0034] The terms used in this specification, such as "upper", "lower", "left", "right", "front", "back", "middle" and "one", are merely for clarity of description and are not intended to limit the scope of implementation of this utility model. Any changes or adjustments to their relative relationships, without substantially altering the technical content, shall also be considered within the scope of implementation of this utility model.

[0035] The above embodiments are merely illustrative of the principles and effects of this utility model and are not intended to limit this utility model. All equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in this utility model should still be covered by the claims of this utility model.

Claims

1. A bucket feeder manual / automatic discharge height adjustment device, characterized in that, It includes a bucket feeder body and a height adjustment device. A gate is movably installed at the discharge port of the bucket feeder body, and the gate is raised and lowered by the height adjustment device. The height adjustment device includes a torque transmission shaft and two sets of worm gear assemblies; the worm gear assembly includes a meshing worm wheel and a worm, and the two ends of the torque transmission shaft are respectively connected to the two worm wheels through universal joint couplings and rotate synchronously with the worm wheels; One of the worm gears is connected to the geared motor via an electromagnetic clutch, and the other worm gear is fixedly connected to the handwheel; the worms in both worm gear assemblies are fixedly connected to the gate via connecting rods.

2. The bucket feeder manual / automatic discharge height adjustment device according to claim 1, characterized in that, The outer side of the discharge surface of the bucket feeder body is equipped with a gate low limit switch and a gate height limit switch, which are electrically connected to the geared motor respectively.

3. The bucket feeder manual / automatic discharge height adjustment device according to claim 2, characterized in that, The outer side of the discharge surface of the bucket feeder body is also provided with a material layer height indicator needle. The material layer height indicator needle can be adjusted up and down, and the adjustment trajectory corresponds to the height adjustment trajectory of the gate.

4. The bucket feeder manual / automatic discharge height adjustment device according to claim 2, characterized in that, The gate's low-level limit switch is used to detect the gate's minimum height. When the gate triggers the low-level limit switch, the switch sends a stop signal to the geared motor, causing the geared motor to stop running.

5. The bucket feeder manual / automatic discharge height adjustment device according to claim 3, characterized in that, The gate height limit switch is used to detect whether the gate has reached the preset height corresponding to the material layer height indicator. When the gate triggers the gate height limit switch, the gate height limit switch sends a stop signal to the geared motor, and the geared motor stops running.

6. The bucket feeder manual / automatic discharge height adjustment device according to any one of claims 1 to 5, characterized in that, All worm gear assemblies have a self-locking function.

7. The bucket feeder manual / automatic discharge height adjustment device according to any one of claims 1 to 5, characterized in that, The upper end of the connecting rod is mechanically fixedly connected to the worm gear, and the lower end of the connecting rod is mechanically fixedly connected to the gate.

8. The bucket feeder manual / automatic discharge height adjustment device according to any one of claims 1 to 5, characterized in that, A guide is sleeved at the middle position of the torque transmission shaft. The guide is installed on the outside of the discharge surface of the bucket feeder body by a bracket. The inner hole of the guide is clearance-fitted with the outer circle of the torque transmission shaft.

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