A simple manual clutch device and method for the trolley operating mechanism of a bridge-type ship unloader

Abstract

The present invention discloses a simple manual clutch device and method for the trolley operating mechanism of a bridge-type ship unloader, comprising a fixing ring, a positioning bolt, a sleeve, a drum-shaped external gear sleeve, an internal gear sleeve, a bearing, a bolt, a shaft retaining ring, and a spline shaft. A fixing ring is installed and tightened on the right side of the shoulder of the spline shaft, and then the left end face of the drum-shaped external gear sleeve is flattened. A sleeve is welded to the drum-shaped external gear sleeve to form a whole, and its left end face is tightly pressed against the right side of the fixing ring. Finally, two symmetrical holes are opened on the left circumference of the welded sleeve and the positioning bolts are screwed in. The present invention solves the problems of the existing manual clutch device, such as complex structure, difficult clutch switching, easy wear and deformation of the thread, resulting in the external gear sleeve being stuck, and damaged shaft retaining ring requiring the entire clutch device to be disassembled before replacement, resulting in long maintenance time. The present invention realizes rapid clutch switching, has a simple and reasonable structure, is easy to install and maintain, and greatly shortens the maintenance time for replacing the wire rope of the bridge-type ship unloader.

Description

Technical Field

[0001] The present invention relates to the technical field of mechanical transmission auxiliary equipment, in particular to a simple manual clutch device and method for a trolley operating mechanism of a bridge-type ship unloader. Background Art

[0002] A bridge-type ship unloader is a type of lifting and unloading equipment commonly found in ports and docks. It features a mechanically differential, four-drum traction trolley. Its lifting, opening, and trolley mechanisms are its core operating mechanisms. These mechanisms are driven by a drive unit that drives four drums. Through various combined motions between the drums, four wire ropes are driven to lift and close the grab bucket and operate the trolley. As dock handling volumes increase, these four wire ropes experience increased wear, shortening their lifespan and necessitating frequent rope changes. To change the ropes on the lifting and closing rope drums of a bridge-type ship unloader, the manual clutch in the trolley mechanism on the same side as the lifting or closing rope drum is first disengaged, preventing power transmission between the motor and reducer within the trolley mechanism and preventing the main trolley from moving. The drum that does not require rope change is then secured with a latch. Finally, the lifting or closing rope drum that requires rope change is electrically activated to rotate independently to facilitate the rope change. Before a bridge-type ship unloader begins operation, the manual clutch in the trolley mechanism must be engaged to ensure the grab bucket can operate normally and grab materials. Therefore, the manual clutch in the trolley mechanism of a bridge-type ship unloader is a key component for switching between rope changing and operating modes.

[0003] The structure of the manual clutch device currently used in the trolley operating mechanism of the bridge ship unloader is as follows: Figure 3 、 4 As shown, the motor-side input end of the clutch device is fastened to the internal gear sleeve 5' with bolts 6'. The inner gear ring of the internal gear sleeve 5' is meshed with the outer gear ring of the drum-shaped external gear sleeve 4'. The drum-shaped external gear sleeve 4' and the spline shaft 7' are connected in a spline pair. At the same time, the left side of the drum-shaped external gear sleeve 4' is threadedly connected to the external gear sleeve 2'. A shaft retaining ring 3' is installed on the right side of the external gear sleeve 2'. The shaft retaining ring 3' is stuck in the limiting groove of the spline shaft 7' and serves as the right limit for the axial movement of the external gear sleeve 2'. Therefore, after removing the set screw 1' that fastens the external gear sleeve 2' to the spline shaft 7', an inner hexagonal wrench is inserted into the set screw hole to rotate the external gear sleeve 2'. The circular motion of the external gear sleeve 2', under the limiting action of the shaft retaining ring 3', will drive the drum-shaped external gear sleeve 4', which is threadedly engaged with it, to move axially along the keyway of the spline shaft 7'. When the drum-shaped external gear sleeve 4' moves to Figure 3 When the clutch is in the position shown, the motor drives the input end of the clutch device to work, and the inner gear ring of the inner gear sleeve 5' and the outer gear ring of the drum gear external gear sleeve 4' are engaged and rotated, so that the spline shaft 7' transmits power to the output end reducer side, realizing the engagement function of the clutch device; when the drum gear external gear sleeve 4' moves to Figure 4 In the position shown, the outer gear ring of the drum-shaped outer gear sleeve 4' is completely disengaged from the inner gear ring of the inner gear sleeve 5', and power cannot be transmitted between the input end and the output end, realizing the disengagement function of the clutch device. However, the above structure has the following defects: 1. The device structure is complex, and the clutch switching is difficult. The clutch process requires the outer gear sleeve 2' to be rotated multiple times with an inner hexagonal wrench, which is time-consuming and labor-intensive; 2. The outer gear sleeve 2' is threadedly connected to the left side of the drum-shaped outer gear sleeve 4', and the thread is easily worn and deformed, causing the outer gear sleeve 2' to get stuck and unable to rotate; 3. As the number of rope replacement operations increases, frequent clutching will cause the shaft retaining ring 3' in the device to be damaged and lose its limiting function, making it impossible to rotate the outer gear sleeve 2' to complete the engagement and disengagement function of the clutch device. When replacing the shaft retaining ring 3', the entire clutch device needs to be disassembled offline. The long maintenance time seriously affects the availability of the bridge ship unloader. Summary of the Invention

[0004] The purpose of the present invention is to provide a simple manual clutch device and method for the trolley operating mechanism of a bridge-type ship unloader, which solves the problems of the existing manual clutch device having a complex structure, difficult clutch switching, easy wear and deformation of the thread, resulting in the jamming of the external gear sleeve, and damage to the shaft retaining ring, which requires the entire clutch device to be disassembled before replacement, resulting in long maintenance time.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] A simple manual clutch device for the trolley running mechanism of a bridge-type ship unloader includes an input end located on the motor side and an output end located on the reducer side, and also includes a fixing ring, a positioning bolt, a bushing, a drum-shaped outer gear bushing, an inner gear bushing, a bearing, a bolt, a shaft retaining ring and a spline shaft; the inner gear bushing is fastened to the input end with bolts, the drum-shaped outer gear bushing and the inner gear bushing are gear meshing connections, the connection between the drum-shaped outer gear bushing and the spline shaft is a spline pair connection, a bearing is installed on the right side of the spline groove of the spline shaft, a shaft retaining ring is installed on the right side of the bearing, the shaft retaining ring is clamped in the limit groove of the spline shaft, a fixing ring is installed and fastened on the right side of the spline shaft shoulder, and after smoothing the left end face of the drum-shaped outer gear bushing, a bushing is welded to form a whole with the drum-shaped outer gear bushing, and the left end face of the drum-shaped outer gear bushing is tightly pressed against the right side of the fixing ring; two symmetrical holes are opened on the left circumference of the bushing for screwing in positioning bolts.

[0007] Furthermore, the axial length of the inner gear sleeve cavity is greater than twice the axial length of the outer gear ring of the drum-shaped outer gear sleeve.

[0008] Furthermore, the axial length of the outer gear ring of the drum-shaped outer gear sleeve is greater than the axial length of the inner gear ring of the inner gear sleeve.

[0009] Furthermore, the spline groove of the spline shaft and the shaft retaining ring are used to axially fix the bearing.

[0010] Furthermore, the axial length of the fixing ring is greater than the axial length of the outer gear ring of the drum-shaped outer gear sleeve.

[0011] Furthermore, the right side of the fixing ring is the left side limit for the axial movement of the drum-shaped toothed outer gear sleeve. Removing the fixing ring and turning the positioning bolt can drive the drum-shaped toothed outer gear sleeve to move axially along the keyway of the spline shaft, and the inner gear sleeve and the spline shaft are used to form a radial limit for the drum-shaped toothed outer gear sleeve, and the bearing is used to form a right side limit for the axial movement of the drum-shaped toothed outer gear sleeve.

[0012] The present invention provides another technical solution: a method for using a simple manual clutch device of a bridge-type ship unloader trolley operating mechanism, comprising the following steps:

[0013] Step 1: When lifting, opening and closing the wire rope drum for bridge ship unloader to change the rope, remove the fixing ring and turn the positioning bolt to drive the drum-shaped gear outer gear sleeve to move to the left until its outer gear ring is completely separated from the inner gear ring of the inner gear sleeve;

[0014] Step 2: Tighten the positioning bolts so that the drum-shaped external gear sleeve does not move axially during the rope changing operation, and power cannot be transmitted between the motor and reducer in the trolley running mechanism, thus realizing the disengagement function of the clutch device;

[0015] Step 3: Before the bridge ship unloader starts working, turn the positioning bolt to drive the drum-shaped gear external gear sleeve to the right until its external gear ring is fully engaged with the internal gear ring of the internal gear sleeve, and install and tighten the fixing ring between the right side of the spline shaft shoulder and the left side of the welded sleeve;

[0016] Step 4: The motor drives the input end of the clutch device to work, and the inner gear ring of the internal gear sleeve engages and rotates with the outer gear ring of the drum-shaped external gear sleeve, so that the spline shaft transmits power to the output end, realizing the engagement function of the clutch device.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] The simple manual clutch device and method of the bridge-type ship unloader trolley operating mechanism of the present invention changes the clutch separation mode of the old equipment which adopts the thread rotation to drive the drum-shaped toothed external gear shaft sleeve meshing with it to move axially, eliminates the defective device of the shaft retaining ring which is time-consuming and labor-intensive to replace in the old equipment, and designs a set of bolt-connected fixing rings and welds a new shaft sleeve device with bolt positioning on the original drum-shaped toothed external gear shaft sleeve. After the fixing ring is released and disassembled, the positioning bolt can be manually turned to drive the drum-shaped toothed external gear shaft sleeve to move axially, thereby realizing rapid switching of the clutch separation function, solving the problems of the existing manual clutch device having a complex structure, difficult clutch switching, easy wear and deformation of the thread, resulting in the jamming of the external gear shaft sleeve, and the problem that the shaft retaining ring is damaged and the entire clutch device needs to be disassembled before it can be replaced, resulting in a long maintenance time. The overall structure is simple and reasonable, and the installation and maintenance are convenient, which greatly shortens the maintenance time of the bridge-type ship unloader for replacing the wire rope. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of the present invention in a joined state;

[0020] Figure 2 It is a structural schematic diagram of the present invention in a disengaged state;

[0021] Figure 3 It is a structural schematic diagram of the currently used manual clutch device in the engaged state;

[0022] Figure 4 It is a structural schematic diagram of the currently used manual clutch device in the disengaged state.

[0023] Figure 1 、 2 Middle: 1. Retaining ring; 2. Positioning bolt; 3. Bushing; 4. Drum-toothed external sleeve; 5. Internal sleeve; 6. Bearing; 7. Bolt; 8. Shaft retaining ring; 9. Spline shaft;

[0024] Figure 3 、 4 Middle: 1′, set screw; 2′, external gear sleeve; 3′, shaft retaining ring; 4′, drum-shaped external gear sleeve; 5′, internal gear sleeve; 6′, bolt; 7′, spline shaft. DETAILED DESCRIPTION

[0025] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0026] See also Figure 1 、 2In an embodiment of the present invention, a simple manual clutch device for a trolley running mechanism of a bridge-type ship unloader is provided, comprising an input end located on the motor side and an output end located on the reducer side, and further comprising a fixing ring 1, a positioning bolt 2, a shaft sleeve 3, a drum-shaped outer gear shaft sleeve 4, an inner gear sleeve 5, a bearing 6, a bolt 7, a shaft retaining ring 8 and a spline shaft 9; wherein the inner gear sleeve 5 is fastened to the input end with a bolt 7, and the axial length of the inner gear sleeve 5 cavity is greater than twice the axial length of the outer gear ring of the drum-shaped outer gear shaft sleeve 4, so that the drum-shaped outer gear shaft sleeve 4 has sufficient space in the cavity of the inner gear sleeve 5 for clutching action; the drum-shaped outer gear shaft sleeve 4 and the inner gear sleeve 5 are meshed with gears, and the axial length of the outer gear ring of the drum-shaped outer gear shaft sleeve 4 is slightly greater than the inner gear ring of the inner gear sleeve 5, so as to ensure that the outer gear ring of the drum-shaped outer gear shaft sleeve 4 can easily push the inner gear ring of the inner gear sleeve 5 to engage during frequent clutching; the drum-shaped outer gear shaft sleeve 4 and the spline shaft 9 The connection method between them is a spline pair connection, and the drum-shaped toothed outer gear sleeve 4 can slide axially along the keyway of the spline shaft 9 to complete the clutch action; a bearing 6 is installed on the right side of the spline groove of the spline shaft 9, and a shaft retaining ring 8 is installed on the right side of the bearing 6. The shaft retaining ring 8 is stuck in the limit groove of the spline shaft 9, and the spline groove of the spline shaft 9 and the shaft retaining ring 8 axially fix the bearing 6; a fixing ring 1 is installed and tightened on the right side of the shoulder of the spline shaft 9, and the axial length of the fixing ring 1 is slightly larger than the axial length of the outer gear ring of the drum-shaped toothed outer gear sleeve 4, ensuring that the outer gear ring of the drum-shaped toothed outer gear sleeve 4 and the inner gear ring of the inner gear sleeve 5 can be fully engaged and disengaged when clutching; after smoothing the left end face of the drum-shaped toothed outer gear sleeve 4, a sleeve 3 is welded to form a whole with the drum-shaped toothed outer gear sleeve 4, and the left end face of the drum-shaped toothed outer gear sleeve 4 is tightly pressed against the right side of the fixing ring 1; two symmetrical holes are opened on the left circumference of the welded sleeve 3 for screwing in the positioning bolts 2.

[0027] After the above structure is assembled, Figure 1 As shown, the right side of the fixing ring 1 becomes the left limit of the axial movement of the drum-shaped external gear sleeve 4. Removing the fixing ring 1 and turning the positioning bolt 2 can drive the drum-shaped external gear sleeve 4 to move axially along the keyway of the spline shaft 9, and the internal gear sleeve 5 and the spline shaft 9 form a radial limit for the drum-shaped external gear sleeve 4 and the bearing 6 forms a right limit for the axial movement of the drum-shaped external gear sleeve 4.

[0028] In order to further better explain the embodiments of the present invention, a method for using a simple manual clutch device of a trolley operating mechanism of a bridge-type ship unloader is also provided, comprising the following steps:

[0029] Step 1: When lifting, opening and closing the wire rope drum for bridge ship unloader to change the rope, remove the fixing ring 1 and turn the positioning bolt 2 to drive the drum-shaped gear outer gear sleeve 4 to move left to Figure 2 In the position shown, the outer gear ring of the drum-shaped external gear sleeve 4 is completely separated from the inner gear ring of the internal gear sleeve 5;

[0030] Step 2: Tighten the positioning bolt 2 so that the drum-shaped external gear sleeve 4 does not move axially during the rope changing operation, and power cannot be transmitted between the motor and the reducer in the trolley running mechanism, thus realizing the disengagement function of the clutch device;

[0031] Step 3: Before the bridge ship unloader starts working, turn the positioning bolt 2 to drive the drum gear external gear sleeve 4 to move to the right. Figure 1 In the position shown, its outer ring gear is fully engaged with the inner ring gear of the inner gear sleeve 5, and the fixing ring 1 is installed and tightened between the right side of the shoulder of the spline shaft 9 and the left side of the welded sleeve 3;

[0032] Step 4: The motor drives the clutch device input end to work, the inner gear ring of the internal gear sleeve 5 engages and rotates with the outer gear ring of the drum-shaped gear external gear sleeve 4, so that the spline shaft 9 transmits power to the output end, realizing the engagement function of the clutch device.

[0033] In summary, the present invention provides a simple manual clutch device and method for the trolley operating mechanism of a bridge-type ship unloader. In view of the problems that the existing manual clutch device has a complex structure, difficult clutch switching, easy wear and deformation of the thread, resulting in the jamming of the external gear sleeve, and the damage of the shaft retaining ring, the entire clutch device needs to be disassembled before it can be replaced, resulting in a long maintenance time, etc., the present invention eliminates the need to use an inner hexagonal wrench to rotate the external gear sleeve with the shaft retaining ring as the limit to drive the axial movement of the drum-shaped external gear sleeve threadedly meshed with it. Figure 3 、 Figure 4 The present invention comprises a positioning screw 1′, an external gear sleeve 2′ and a shaft retaining ring 3′; a fixing ring 1 is installed and fastened on the right side of the shoulder of the spline shaft 9, and the axial length of the fixing ring 1 is slightly larger than the axial length of the outer gear ring of the drum-shaped external gear sleeve 4, and then the left end face of the drum-shaped external gear sleeve 4 is leveled, a sleeve 3 is welded to form a whole with the drum-shaped external gear sleeve 4 and its left end face is tightly pressed against the right side of the fixing ring 1, and finally two symmetrical holes are opened on the left circumference of the welded sleeve 3 and the positioning bolts 2 are screwed in, and the other parts remain unchanged, thereby realizing rapid switching of the clutch, having a simple and reasonable structure, and being easy to install and maintain, which greatly shortens the maintenance time for replacing the wire rope of the bridge-type ship unloader.

[0034] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solution and inventive concept of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. A simple manual clutch device for the trolley running mechanism of a bridge-type ship unloader, comprising an input end on the motor side and an output end on the reducer side, characterized in that: It also includes a fixing ring (1), a positioning bolt (2), a sleeve (3), a drum-shaped outer gear sleeve (4), an inner gear sleeve (5), a bearing (6), a bolt (7), a shaft retaining ring (8) and a spline shaft (9); the inner gear sleeve (5) is fastened to the input end with a bolt (7), the drum-shaped outer gear sleeve (4) and the inner gear sleeve (5) are connected in a gear meshing manner, the drum-shaped outer gear sleeve (4) and the spline shaft (9) are connected in a spline pair manner, and a bearing ( 6), a shaft retaining ring (8) is installed on the right side of the bearing (6), and the shaft retaining ring (8) is stuck in the limit groove of the spline shaft (9). A fixing ring (1) is installed and fastened on the right side of the spline shaft (9) shoulder. After the left end face of the drum-shaped external gear shaft sleeve (4) is leveled, a shaft sleeve (3) is welded with the drum-shaped external gear shaft sleeve (4) to form a whole, and the left end face of the drum-shaped external gear shaft sleeve (4) is tightly pressed against the right side of the fixing ring (1); two symmetrical holes are opened on the left circumference of the shaft sleeve (3) for screwing in the positioning bolts (2); The fixing ring (1) is used to limit the axial movement of the drum-shaped outer gear shaft sleeve (4) to the left, and the fixing ring (1) is removed and the positioning bolt (2) is turned to drive the drum-shaped outer gear shaft sleeve (4) to move axially along the keyway of the spline shaft (9), and the inner gear sleeve (5) and the spline shaft (9) are used to limit the radial movement of the drum-shaped outer gear shaft sleeve (4), and the bearing (6) is used to limit the axial movement of the drum-shaped outer gear shaft sleeve (4) to the right.

2. A simple manual clutch device for the trolley operating mechanism of a bridge-type ship unloader according to claim 1, characterized in that: The axial length of the inner gear sleeve (5) in the cavity is greater than twice the axial length of the outer gear ring of the drum-shaped outer gear sleeve (4).

3. The simplified manual clutch device for the trolley operating mechanism of a bridge-type ship unloader according to claim 1, characterized in that: The axial length of the outer gear ring of the drum-shaped outer gear sleeve (4) is greater than the axial length of the inner gear ring of the inner gear sleeve (5).

4. The simplified manual clutch device for the trolley operating mechanism of a bridge-type ship unloader according to claim 1, characterized in that: The spline groove of the spline shaft (9) and the shaft retaining ring (8) are used to axially fix the bearing (6).

5. The simplified manual clutch device for the trolley operating mechanism of a bridge-type ship unloader according to claim 1, characterized in that: The axial length of the fixing ring (1) is greater than the axial length of the outer gear ring of the drum-shaped outer gear sleeve (4).

6. A method for using the simplified manual clutch device for the trolley operating mechanism of a bridge-type ship unloader according to claim 1, characterized in that: The following steps are involved: Step 1: When lifting, opening and closing the wire rope drum of the bridge ship unloader to change the rope, remove the fixing ring (1) and turn the positioning bolt (2) to drive the drum-shaped gear outer gear sleeve (4) to move to the left until its outer gear ring is completely separated from the inner gear ring of the inner gear sleeve (5); Step 2: Tighten the positioning bolt (2) so that the drum-shaped toothed outer gear sleeve (4) does not move axially during the rope changing operation, and power cannot be transmitted between the motor and the reducer in the trolley running mechanism, thereby realizing the disengagement function of the clutch device; Step 3: Before the bridge ship unloader starts working, turn the positioning bolt (2) to drive the drum-shaped gear outer gear sleeve (4) to move to the right until its outer gear ring is fully engaged with the inner gear ring of the inner gear sleeve (5), and install and tighten the fixing ring (1) between the right side of the spline shaft (9) shoulder and the left side of the welded sleeve (3); Step 4: The motor drives the clutch device input end to work, and the inner gear ring of the inner gear sleeve (5) meshes and rotates with the outer gear ring of the drum-shaped outer gear sleeve (4), so that the spline shaft (9) transmits power to the output end, realizing the engagement function of the clutch device.

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