CN104802127B - A differential bearing removal device - Google Patents

Abstract

The invention relates to a bearing dismounting device, in particular to a differential bearing dismounting device. Including power shaft, pretension cover, go up differential cover, activity festival, lower differential cover, connecting plate, arc splint, pin, power shaft and pretension cover threaded connection, last differential cover, lower differential cover respectively with pretension cover threaded connection, connecting plate upper end and last differential cover pass through pin joint, the centre passes through pin joint with the activity festival, the lower extreme passes through pin joint with arc splint. The invention has the beneficial effects that: the structure is simple, the use is convenient, the upper differential sleeve and the lower differential sleeve form a differential motion, the stroke length of the upper differential sleeve on the pre-tightening sleeve is shortened, and the size of a bearing disassembling tool is reduced; the inner arc surface of the arc-shaped clamping plate is provided with threads, so that the friction force between the arc-shaped clamping plate and the cylindrical surface of the bearing is increased, and the arc-shaped clamping plate is convenient to disassemble; overcomes the defects of large size, complex structure and inconvenient carrying of a common bearing disassembling tool and has certain practical value.

Description

A differential bearing removal device

technical field

The invention relates to a bearing dismounting device, in particular to a differential bearing dismounting device.

Background technique

With the rapid development of the bearing industry, bearings are now widely used in various industries. In general machinery, deep groove ball bearings are the most common application. Deep groove ball bearings are installed on the journal near the shaft end when they are in use. The interference fit of the journal increases the difficulty of dismounting the bearing due to its large interference. At present, there are few special dismounting tools for bearings on the market. The working principle is mostly to clamp the lower end surface of the bearing with claws, and then turn the central threaded shaft to make the shaft on which the bearing is installed move down, so as to disassemble the bearing. During the disassembly process The movement stroke of the central threaded shaft is relatively large, making the bearing removal tool large in size, heavy and inconvenient to carry.

Contents of the invention

The present invention aims to solve the above problems, and provides a differential bearing removal device, which overcomes the disadvantages of large size, complex structure and inconvenient portability of ordinary bearing removal tools. The technical scheme adopted is as follows:

A differential bearing removal device, comprising a power shaft, a preload sleeve, an upper differential sleeve, a movable joint, a lower differential sleeve, a connecting plate, an arc splint, and a pin, and the power shaft is threadedly connected to the preload sleeve , the upper differential sleeve and the lower differential sleeve are threadedly connected with the pre-tightening sleeve respectively, the upper end of the connecting plate is connected with the upper differential sleeve through pins, the middle is connected with the movable joint through pins, and the lower end is connected with the arc splint through Pin connection, one end of the movable joint is connected with the lower differential sleeve through a pin, and the other end is connected with the connecting plate through a pin.

The power shaft includes a shaft head, a rotating rod and a threaded shaft, the rotating rod is welded on the cylindrical surface of the shaft head, the threaded shaft and the shaft head are integrally processed parts, and the end of the threaded shaft is close to the shaft head There are external threads processed, and the end away from the shaft head is unprocessed. The processed threaded part accounts for seven tenths of the total length of the threaded shaft. The diameter of the unprocessed threaded part is smaller than the diameter of the processed threaded part. The threaded shaft processed The external thread is ordinary coarse thread.

The pre-tightening sleeve includes a rotating rod and a threaded sleeve, the rotating rod is welded on the upper end of the threaded sleeve, the threaded sleeve is a hollow structure, and the inner cylindrical surface is processed with ordinary coarse threads, and the outer cylindrical surface is There are upper and lower ordinary coarse-tooth threads processed, and the upper thread and the lower thread have the opposite direction of rotation.

The upper differential sleeve includes an upper differential sleeve body and an upper support plate, the upper support plate is welded on the upper differential sleeve body, the upper differential sleeve body is a hollow structure, and the inner cylindrical surface Ordinary coarse thread is processed, the direction of rotation is the same as the upper thread of the outer cylindrical surface of the threaded sleeve, and it is connected with the upper thread of the outer cylindrical surface of the threaded sleeve.

The lower differential sleeve includes a lower differential sleeve body and a lower support plate, the lower support plate is welded on the lower differential sleeve body, the lower differential sleeve body is a hollow structure, and the inner cylindrical surface is processed There are ordinary coarse-tooth threads, the direction of rotation is the same as that of the lower section of the outer cylindrical surface of the threaded sleeve, and it is connected with the lower section of the outer cylindrical surface of the threaded sleeve.

The connecting plate includes an upper differential sleeve connecting hole, a curved plate, a movable joint connecting hole and an arc splint connecting hole, the upper differential sleeve connecting hole is set on the upper end of the curved plate, and the movable joint connecting hole is set on the curved plate The connection holes of the middle and curved splints are provided at the lower end of the curved plate.

The arc-shaped splint includes a joint and an arc-shaped plate, the joint is welded on the outer arc of the arc-shaped plate, and the inner arc of the arc-shaped plate is processed with ordinary coarse threads.

The present invention has the following advantages: simple structure, easy to use, the upper differential sleeve and the lower differential sleeve form a differential motion, which shortens its stroke length on the pre-tightening sleeve and reduces the size of the bearing removal tool; The inner arc surface is processed with threads, which increases the friction force with the cylindrical surface of the bearing and facilitates disassembly; it overcomes the disadvantages of large size, complex structure and inconvenient portability of ordinary bearing disassembly tools, and has certain practical value.

Description of drawings

Figure 1: A schematic diagram of the overall structure of a differential bearing removal device;

Figure 2: Schematic diagram of the power shaft of a differential bearing removal device;

Figure 3: Structural schematic diagram of a preload sleeve of a differential bearing removal device;

Figure 4: Schematic diagram of the structure of a differential sleeve on a differential bearing removal device;

Figure 5: Schematic diagram of the structure of a differential sleeve under a differential bearing removal device;

Figure 6: Schematic diagram of the structure of a connecting plate of a differential bearing removal device;

Figure 7: Schematic diagram of the structure of an arc-shaped splint for a differential bearing removal device.

Symbol Description:

1. Power shaft, 2. Preload sleeve, 3. Upper differential sleeve, 4. Swivel joint, 5. Lower differential sleeve, 6. Connecting plate, 7. Arc splint, 8. Pin, 1.1 Shaft head, 1.2 Rotating rod, 1.3 threaded shaft, 2.1 rotating rod, 2.2 threaded sleeve, 3.1 upper differential sleeve body, 3.2 upper support plate, 5.1 lower differential sleeve body, 5.2 lower support plate, 6.1 upper differential sleeve connection hole, 6.2 curved plate , 6.3 Connecting holes for movable joints, 6.4 Connecting holes for curved splints, 7.1 Joints, 7.2 Curved plates.

detailed description

Below in conjunction with accompanying drawing and example the present invention will be further described:

As shown in Figures 1-7, a differential bearing removal device of the present invention includes a power shaft (1), a preload sleeve (2), an upper differential sleeve (3), a movable joint (4), a lower differential sleeve (5), connecting plate (6), arc splint (7), pin (8), the power shaft (1) is threaded with the pre-tightening sleeve (2), and the upper differential sleeve (3 ), the lower differential sleeve (5) is threadedly connected with the pre-tightening sleeve (2) respectively, the upper end of the connecting plate (6) is connected with the upper differential sleeve (3) through a pin (8), and the middle is connected with the movable joint (4 ) is connected by a pin (8), the lower end is connected with the arc splint (7) by a pin (8), one end of the movable joint (4) is connected with the lower differential sleeve (5) by a pin (8), and the other end is connected with the The connecting plates (6) are connected by pins (8).

The power shaft (1) includes a shaft head (1.1), a rotating rod (1.2) and a threaded shaft (1.3), the rotating rod (1.2) is welded on the cylindrical surface of the shaft head (1.1), and the The threaded shaft (1.3) and the shaft head (1.1) are integrally processed parts, and the end of the threaded shaft (1.3) close to the shaft head (1.1) is processed with external threads, and the end far away from the shaft head (1.1) is not processed with threads, but is processed with threads The part accounts for seven tenths of the total length of the threaded shaft (1.3), the diameter of the unprocessed threaded part is smaller than the diameter of the machined threaded part, and the external thread processed by the threaded shaft (1.3) is an ordinary coarse thread.

The pre-tightening sleeve (2) includes a rotating rod (2.1) and a threaded sleeve (2.2), the rotating rod (2.1) is welded on the upper end of the threaded sleeve (2.2), and the threaded sleeve (2.2) is hollow The inner cylindrical surface is processed with ordinary coarse thread, and the outer cylindrical surface is processed with upper and lower ordinary coarse threads, and the upper thread and the lower thread have the opposite direction of rotation.

The upper differential sleeve (3) includes an upper differential sleeve body (3.1) and an upper support plate (3.2), the upper support plate (3.2) is welded on the upper differential sleeve body (3.1), the The upper differential sleeve body (3.1) is a hollow structure, and its inner cylindrical surface is processed with ordinary coarse thread, the direction of rotation is the same as that of the upper thread on the outer cylindrical surface of the threaded sleeve (2.2), and is the same as that of the outer cylindrical surface of the threaded sleeve (2.2). The upper section of the surface is threaded.

The lower differential sleeve (5) includes a lower differential sleeve body (5.1) and a lower support plate (5.2), the lower support plate (5.2) is welded on the lower differential sleeve body (5.1), and the The lower differential sleeve body (5.1) is a hollow structure, and its inner cylindrical surface is processed with ordinary coarse thread, the direction of rotation is the same as that of the lower thread on the outer cylindrical surface of the threaded sleeve (2.2), and is the same as that of the outer cylindrical surface of the threaded sleeve (2.2). The lower threaded connection.

The connecting plate (6) includes an upper differential sleeve connecting hole (6.1), a curved plate (6.2), a movable joint connecting hole (6.3) and an arc splint connecting hole (6.4), and the upper differential sleeve is connected The hole (6.1) is provided at the upper end of the curved plate (6.2), the movable joint connecting hole (6.3) is provided in the middle of the curved plate (6.2), and the arc splint connecting hole (6.4) is provided at the lower end of the curved plate (6.2).

The arc splint (7) includes a joint (7.1) and an arc plate (7.2), the joint (7.1) is welded on the outer arc surface of the arc plate (7.2), and the arc plate ( 7.2) Ordinary coarse threads are processed on the inner arc surface.

When using the present invention, the differential bearing removal device is placed vertically above the bearing to be removed, and the upper differential sleeve (3) is rotated along the direction of the preload sleeve (2) by rotating the upper differential sleeve (3). Move down, and drive the lower differential sleeve (5) to move upward along the pre-tightening sleeve (2) through the movable joint (4) and the connecting plate (6), thereby realizing the differential action and saving the travel distance. During this process, the pretensioning sleeve (2) remains stationary, and the connecting plate (6) outputs a definite action until the two arc-shaped splints (7) clamp the outer cylindrical surface of the bearing. At this time, hold the pretensioning sleeve (2) The rotating rod (2.1) keeps the pretensioning sleeve (2) inactive, and at the same time starts to rotate the power shaft (1), making it move down along the inner threaded hole of the pretensioning sleeve (2), so that its lower end surface is against the bearing Then continue to rotate the power shaft (1) to load on the upper end face of the shaft section, until the bearing is unloaded from the installed shaft. The connection mode of this device is threaded connection and pin connection, which is convenient for disassembly and maintenance.

The present invention has been described above by way of examples, but the present invention is not limited to the above specific embodiments, and any changes or modifications made based on the present invention fall within the scope of protection of the present invention.

Claims (5)

1. a kind of differential type bearing disassembling device it is characterised in that：Including line shaft (1), pre-tightening sleeve (2), upper differential sleeve (3), Active section (4), lower differential sleeve (5), connecting plate (6), curved splint (7), pin (8), described line shaft (1) and pre-tightening sleeve (2) threaded, described upper differential sleeve (3), lower differential sleeve (5) are threadeded with pre-tightening sleeve (2) respectively, described connecting plate (6) upper end is connected by pin (8) with upper differential sleeve (3), and centre is connected by pin (8) with active section (4), lower end and arc Clamping plate (7) passes through pin (8) and connects, and described active section (4) one end is connected by pin (8) with lower differential sleeve (5), the other end It is connected by pin (8) with connecting plate (6)；Differential sleeve connecting hole (6.1) in described connecting plate (6) inclusion, bent plate (6.2), Active section connecting hole (6.3) and curved splint connecting hole (6.4), described upper differential sleeve connecting hole (6.1) is opened in bent plate (6.2) upper end, active section connecting hole (6.3) are opened in the middle of bent plate (6.2), curved splint connecting hole (6.4) is opened in bent plate (6.2) lower end；Described curved splint (7) includes joint (7.1) and arc (7.2), and described joint (7.1) is welded on arc On the extrados of shape plate (7.2), described arc (7.2) intrados is machined with common coarse thread.

2. a kind of differential type bearing disassembling device according to claim 1 it is characterised in that：Described line shaft (1) bag Include spindle nose (1.1), bull stick (1.2) and thread spindle (1.3), described bull stick (1.2) is welded on the face of cylinder of spindle nose (1.1), Described thread spindle (1.3) and spindle nose (1.1) are overall processing part, and thread spindle (1.3) is near one end of spindle nose (1.1) It is machined with external screw thread, away from the undressed screw thread in one end of spindle nose (1.1), the part being threaded accounts for thread spindle (1.3) overall length 7/10ths of degree, the diameter of undressed threaded portion is less than the diameter of processing threaded portion, and described thread spindle (1.3) is processed External screw thread be common coarse thread.

3. a kind of differential type bearing disassembling device according to claim 1 it is characterised in that：Described pre-tightening sleeve (2) bag Include rotating bar (2.1) and thread bush (2.2), described rotating bar (2.1) is welded on the upper end of thread bush (2.2), described spiral shell Stricture of vagina set (2.2) is hollow-core construction, its inner cylinder face is machined with common coarse thread, external cylindrical surface is machined with two sections general Logical coarse thread, and epimere screw thread and hypomere screw thread is oppositely oriented.

4. a kind of differential type bearing disassembling device according to claim 1 it is characterised in that：Described upper differential sleeve (3) Including upper differential body (3.1) and upper supporting plate (3.2), described upper supporting plate (3.2) is welded on differential body (3.1), institute The upper differential body (3.1) stated is hollow-core construction, and its inner cylinder face is machined with common coarse thread, rotation direction and thread bush (2.2) the epimere screw thread of external cylindrical surface is identical, and threadeds with the epimere of thread bush (2.2) external cylindrical surface.

5. a kind of differential type bearing disassembling device according to claim 1 it is characterised in that：Described lower differential sleeve (5) Including under differential body (5.1) and lower carrier plate (5.2), described lower carrier plate (5.2) is welded on down on differential body (5.1), institute Stating down differential body (5.1) is hollow-core construction, and its inner cylinder face is machined with common coarse thread, rotation direction and thread bush (2.2) the hypomere screw thread of external cylindrical surface is identical, and threadeds with the hypomere of thread bush (2.2) external cylindrical surface.