Dryer reduction gearbox with shift fork

Abstract

This invention discloses a dryer gearbox with a shift fork, comprising: a lower housing, a transition gear I, a retaining sleeve, a pinion I, a switching mechanism, an upper housing, a linkage mechanism, an operating mechanism, an indicator, a cover plate, an intermediate support, a splined half-shaft, a pinion II, a transition gear II, and a bracket. The high-speed shaft of this gearbox consists of two independently driven input shafts. The equipment can be turned without a clutch device. The gearbox can be driven independently by shifting the shift fork, which saves production space and reduces the problem of easy damage to the clutch device.

Description

Technical Field

[0001] This invention relates to a large-scale dryer for the carbon black industry, belonging to high-end manufacturing. It is mainly used for rotation, debugging and inspection of the dryer before it leaves the factory, after on-site installation and maintenance, to ensure the safe and reliable operation of the dryer during production. Background Technology

[0002] 1. Large-scale drying equipment used in the carbon black industry must undergo pre-shipment inspection to verify the manufacturing precision and operation of the equipment after it has been manufactured by the equipment manufacturer. At the production site, the precision of the equipment after installation and maintenance must be inspected to verify whether it meets the technical requirements.

[0003] 2. The turning gear test run is the final inspection of the equipment before it is put into production. Currently, the gearbox used in the dryer has two sets of drive devices, namely the main motor drive during the production process and the turning gear reducer test run drive.

[0004] 3. The existing gearbox input shaft has two shaft extensions, which are connected to the main motor and the turning gear reducer respectively through a clutch device; when turning the gear, the clutch device connected to the main motor is disengaged, and the clutch device connected to the turning gear reducer is engaged. After the turning gear is qualified, the clutch device is disengaged again, and the clutch device connected to the main motor is engaged.

[0005] 4. The disadvantages of this arrangement are: firstly, the two sets of clutch devices occupy a large production space and have relatively high costs; secondly, the main motor connected by the clutch devices operates under harsh environmental conditions for a long time, which makes it prone to damage, has a short maintenance cycle, and is costly.

[0006] 5. In view of the above-mentioned problems, a dryer gearbox with a shift fork was designed. This gearbox eliminates the defects of the prior art and is completely different from the prior art. It removes the clutch device of the main motor shaft and the turning gear reducer shaft, and the main motor and the turning gear reducer can be driven independently by shifting the shift fork on the reducer. Summary of the Invention

[0007] The present invention aims to design a dryer gearbox with a shift fork, and its technical solution is as follows:

[0008] A dryer gearbox with a shift fork includes: a lower housing, a transition gear I, a retaining sleeve, a pinion I, a switching mechanism, a pin shaft, a shift fork, an upper housing, a linkage mechanism, a crossbeam, a base plate, an operating mechanism, an operating lever, a rotating shaft, a connecting rod, an indicator plate, a cover plate, an intermediate support, a splined half-shaft, a pinion II, a transition gear II, and a bracket, characterized in that:

[0009] 1. The gearbox housing consists of a lower housing and an upper housing. Bosses are provided on the inner side of the lower housing and the outer side of the upper housing at the input shaft position.

[0010] 2. A bracket is installed on the lower housing boss for installing the intermediate support;

[0011] 3. A pivot is horizontally inserted through the boss on the upper housing for mounting the operating mechanism;

[0012] 4. The switching mechanism, linkage mechanism, and operating mechanism constitute the power system driven by the main motor of the switching gearbox or the turning gear reducer;

[0013] 5. The rotating shaft (8.2) is connected to the operating lever (8.1) and the connecting rod (8.3) respectively via the pin (5.1). The lower end of the connecting rod (8.3) has a long groove and is connected to the seat plate (7.2) via the pin (5.1).

[0014] 6. Two independent splined half-shafts form the input shaft of the gearbox. The splined half-shafts are mounted on the housing and intermediate support. The two splined half-shafts are respectively connected to the drive main motor and the turning gear reducer.

[0015] 7. Pinion I and pinion II are respectively mounted on two splined half-shafts via splines and can slide on the half-shafts;

[0016] 8. The switching mechanism consists of two shift forks and a linkage mechanism. The two shift forks are connected to the crossbeam by pins and are installed in the annular grooves of two small gears.

[0017] 9. The linkage mechanism is welded together from two crossbeams and a base plate. The two base plates clamp the two crossbeams together and weld them into one piece. It is connected to the connecting rod of the operating mechanism with a sliding groove through a pin. The pin can slide in the sliding groove.

[0018] 10. The operating mechanism consists of an operating lever, a rotating shaft, and a connecting rod. The operating lever and the connecting rod are respectively connected to the rotating shaft by pins, and the indicator plate is installed on the cover plate.

[0019] The key design features of this invention are:

[0020] 1. The gearbox drive motor and the turning gear motor operate independently;

[0021] 2. Observe and adjust the operation of the dryer before it leaves the factory or after on-site installation and maintenance to prepare the equipment for production.

[0022] The advantages of this invention are:

[0023] 1. A gearbox with shift forks divides a high-speed shaft consisting of two shaft extensions into input shafts that can be driven independently.

[0024] 2. The on-site dryer does not require a clutch device. The gearbox and main motor can be driven independently by moving the gearbox shift fork, which saves production space and reduces problems such as easy damage to the clutch device.

[0025] 3. Upon investigation, it was found that currently common standard gearboxes do not have shift forks and all have a single input shaft. Without a clutch device, the main motor or gearbox reducer can easily run continuously during operation, causing damage. This gearbox can solve the problem of electric gearbox turning by adding two bosses to the standard gearbox.

[0026] 4. This gearbox can be upgraded to a standard gearbox with a shift fork without increasing costs. The resulting effect and function are significant and have profound practical implications.

[0027] 5. This gearbox is also suitable for other large equipment that requires electric turning gears. Attached Figure Description

[0028] Figure 1 This invention relates to a dryer gearbox with a shift fork.

[0029] Figure 2 for Figure 1 AA View

[0030] Figure 3 for Figure 1 BB View

[0031] Figure 4 for Figure 1 CC View

[0032] Figure 5 for Figure 1 Left view

[0033] Figure 6 for Figure 5 Unfolded diagram

[0034] Marked in the image:

[0035] 1-Lower housing, 2-Transition gear I, 3-Sleeve, 4-Pinus I, 5.0-Switching mechanism, 5.1-Pin shaft, 5.2-Shift fork, 6-Upper housing, 7.0-Linkage mechanism, 7.1-Crossbeam, 7.2-Seat plate, 8.0-Operating mechanism, 8.1-Operating lever, 8.2-Rotating shaft, 8.3-Connecting rod, 8.4-Indicator sign, 9-Cover plate, 10-Intermediate support, 11-Splined half-shaft, 12-Pinus II, 13-Transition gear II, 14-Bracket

[0036] a- indicates that pinion II meshes with transition gear II, meaning the gearbox is driven by the main motor.

[0037] b - refers to the meshing of pinion I and transition gear I, meaning the gearbox is driven by a turning gear reducer. Detailed Implementation

[0038] A dryer gearbox with a shift fork includes: a lower housing 1, a transition gear I 2, a retaining sleeve 3, a pinion I 4, a switching mechanism 5.0, a pin shaft 5.1, a shift fork 5.2, an upper housing 6, a linkage mechanism 7.0, a crossbeam 7.1, a seat plate 7.2, an operating mechanism 8.0, an operating lever 8.1, a rotating shaft 8.2, a connecting rod 8.3, an indicator plate 8.4, a cover plate 9, an intermediate support 10, a splined half-shaft 11, a pinion II 12, a transition gear II 13, and a bracket 14.

[0039] Specific implementation process:

[0040] 1. Cast iron parts: lower shell 1, upper shell 6, intermediate support 10;

[0041] 2. Forgings: Pinion I 4, Splined half-shaft 11, Pinion II 12, Transition gear II 13;

[0042] 3. Material unloading: 3. Gear sleeve, 5.1. Pin shaft, 5.2. Shift fork, 7.1. Crossbeam, 7.2. Seat plate, 8.1. Operating lever, 8.2. Rotating shaft, 8.3. Connecting rod, 8.4. Indicator plate, 9. Cover plate, 14. Bracket;

[0043] 4. Machining: Lower housing 1, transition gear I 2, retaining sleeve 3, pinion I 4, pin shaft 5.1, shift fork 5.2, upper housing 6, crossbeam 7.1, seat plate 7.2, operating lever 8.1, rotating shaft 8.2, connecting rod 8.3, indicator plate 8.4, cover plate 9, intermediate support 10, spline half shaft 11, pinion II 12, transition gear II 13, bracket 14, and bearing cover, etc.;

[0044] 5. Assembly and welding: crossbeam 7.1, base plate 7.2, bracket 14;

[0045] 6. Outsourced purchases: bearings, fasteners, and seals;

[0046] 7. Installation:

[0047] 7.1 The bracket 14 is installed on the bottom boss of the lower housing 1, and then the intermediate support 10 is installed, and the bearing is installed;

[0048] 7.2 Transition gear I 2, transition gear II 13, and intermediate gear are mounted on the intermediate shaft and placed on the lower housing 1;

[0049] 7.3 The large gear is mounted on the output shaft and meshes with the intermediate gear, and is placed on the lower housing 1;

[0050] 7.4 Pinion I4 and pinion II12 are respectively mounted on two splined half-shafts 11, and after the retaining sleeves 3 are installed, they are placed on the lower housing 1;

[0051] 7.5 Install the output shaft, intermediate shaft, and high-speed shaft bearings, bearing covers, and seals;

[0052] 7.6 Install the switching mechanism 5.0, the linkage mechanism 7.0, and the operating mechanism 8.0, and install the shift fork 5.2 in the annular groove of the pinion;

[0053] 7.7 Install the upper housing 6 onto the lower housing 1, with the connecting rod 8.3 extending out of the boss hole of the upper housing 6;

[0054] 7.8 Install the rotating shaft 8.2 and connect it to the connecting rod with a pin, and install the operating lever 8.1, cover plate 9, and indicator 8.4;

[0055] 8. Debugging and testing:

[0056] 8.1 When the operating lever 8.1 is moved to position a on the indicator 8.4, pinion II 12 and transition gear II 13 mesh, and at this time pinion I 4 and transition gear I 2 disengage, and the main motor becomes the driving force;

[0057] 8.2 When the operating lever 8.1 is moved to position b on the indicator 8.4, pinion I4 and transition gear I2 mesh, pinion II12 and transition gear II13 disengage, and the rotary reducer becomes the driving power;

[0058] 8.3 When the operating lever 8.1 is turned, the two pinions should slide freely on the spline half-shaft 11 without any obstruction, ensuring that the lever is turned to the correct position;

[0059] 8.4 Pre-shipment trial run: Move the operating lever 8.1 to position b on the indicator 8.4, start the turning gear reducer to perform a turning test, and ensure that there are no abnormalities in the meshing of each gear, no noise during operation, and no abnormal temperature rise in the bearings;

[0060] 9. After the equipment arrives at the site, conduct another on-site inspection as required in Article 8. Only after passing the inspection should the operating lever 8.1 be moved to position a on indicator 8.4, and the dryer equipment can then be put into operation on the production line.

Claims

1. A dryer gearbox with a shift fork, comprising: The components are: lower housing (1), transition gear I (2), retaining sleeve (3), pinion I (4), switching mechanism (5.0), pin shaft (5.1), shift fork (5.2), upper housing (6), linkage mechanism (7.0), crossbeam (7.1), seat plate (7.2), operating mechanism (8.0), operating lever (8.1), rotating shaft (8.2), connecting rod (8.3), indicator plate (8.4), cover plate (9), intermediate support (10), spline half shaft (11), pinion II (12), transition gear II (13), and bracket (14), characterized in that: 1) The gearbox housing consists of a lower housing (1) and an upper housing (6). Bosses are provided on the inner side of the lower housing (1) and the outer side of the upper housing (6) at the input shaft position. 2) A bracket (14) is installed on the boss of the lower housing (1) for installing the intermediate support (10); 3) A rotating shaft (8.2) is transversely inserted through the boss of the upper housing (6) for mounting the operating mechanism (8.0); 4) The switching mechanism (5.0), linkage mechanism (7.0) and operating mechanism (8.0) together form a power system driven by the main motor of the switching gearbox or the turning gear reducer; 5) The rotating shaft (8.2) is connected to the operating lever (8.1) and the connecting rod (8.3) respectively via the pin (5.1). The lower end of the connecting rod (8.3) has a long groove and is connected to the seat plate (7.2) via the pin (5.1). 6) Two independent spline half-shafts (11) form the input shaft of the gearbox. The spline half-shafts (11) are mounted on the housing and the intermediate support (10). The two spline half-shafts (11) are respectively connected to the main drive motor and the connecting plate reducer. 7) Pulley I (4) and Pulley II (12) are respectively mounted on two splined half-shafts (11) via splines and can slide on the half-shafts; 8) The two forks (5.2) of the switching mechanism (5.0) are installed in the two pinion annular grooves; 9) The linkage mechanism (7.0) is connected to the connecting rod (8.3) with a groove in the operating mechanism (8.0) via a pin (5.1), and the pin (5.1) can slide in the groove; 10) The sign (8.4) is installed on the cover plate (9).

2. The dryer gearbox with shift fork according to claim 1, characterized in that: The switching mechanism (5.0) consists of a shift fork (5.2) and a linkage mechanism (7.0). The two shift forks (5.2) are connected to the crossbeam (7.1) respectively through pins (5.1).

3. The dryer gearbox with shift fork according to claim 1, characterized in that: The linkage mechanism (7.0) is welded together from a crossbeam (7.1) and a base plate (7.2). The two base plates (7.2) clamp the two crossbeams (7.1) together and weld them into one piece.

4. The dryer gearbox with shift fork according to claim 1, characterized in that: The control mechanism (8.0) consists of an operating lever (8.1), a rotating shaft (8.2), and a connecting rod (8.3). The operating lever (8.1) and the connecting rod (8.3) are respectively connected to the rotating shaft (8.2) via pins (5.1).

Images