Dismounting mechanism capable of separating bearing from crankshaft

Abstract

The utility model discloses a disassembling mechanism capable of separating a bearing from a crankshaft, which comprises a base, a lifting assembly arranged on the base and a clamping assembly, the lifting assembly is provided with a jacking surface for supporting a workpiece, the clamping assembly comprises a plurality of supporting rods arranged around the lifting assembly, and the upper end parts of the supporting rods are provided with clamping jaws; the bearing and the crankshaft can be easily separated through the dismounting mechanism, a linear cutting mode is not needed, and the crankshaft is prevented from being damaged.

Description

Technical Field

[0001] The utility model relates to the technical field of emulsified oil pumps, in particular to a disassembly mechanism capable of separating a bearing from a crankshaft. Background Art

[0002] As an indispensable and important equipment in the comprehensive mining working face, the emulsion pump station provides hydraulic power for the hydraulic support of the working face and is the heart of the entire working face hydraulic system.

[0003] Existing emulsion pumps require a crankshaft, and the crankshaft and bearings are usually interference fit. The assembly will use heating to expand the bearing hole, which saves installation effort. However, when encountering a crankshaft assembly that needs to be repaired and the bearings need to be replaced, we usually use wire cutting to cut the bearings off the crankshaft, which has very high cutting requirements and is easy to damage the crankshaft. Utility Model Content

[0004] The purpose of the utility model is to overcome the shortcomings and deficiencies of the prior art and to provide a disassembly mechanism which can separate a bearing from a crankshaft.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a disassembly mechanism that can separate the bearing and the crankshaft, comprising a base, a lifting assembly and a clamping assembly arranged on the base, the lifting assembly having a lifting surface for supporting the workpiece, the clamping assembly comprising a plurality of support rods arranged around the lifting assembly and the upper ends of the support rods being provided with clamping claws, the clamping direction of the clamping claws being adjustable and the clamping claws being arranged inward when the clamping claws are clamped.

[0006] As a preferred technical solution of the utility model, the support rod is fixed to the base through a locking piece and the circumferential position of the support rod is adjustable, and the clamping claw is fixed to or integrally formed with the support rod.

[0007] As a preferred technical solution of the utility model, a threaded section is provided at the lower end of the support rod, a through hole is provided on the base for the threaded section to pass through, two nuts are threadedly connected to the threaded section, and the two nuts are respectively abutted against the upper and lower end faces of the base with the through hole.

[0008] As a preferred technical solution of the utility model, a work surface is arranged on the base, the through hole is opened on the work surface, and two nuts on the same support rod respectively abut against the upper and lower end surfaces of the work surface.

[0009] As a preferred technical solution of the utility model, the lifting assembly includes a jack arranged at the upper end of the base.

[0010] As a preferred technical solution of the utility model, each of the clamping jaws is provided with a support member outside, and also includes a fixing ring sleeved outside the plurality of clamping jaws, and the lower end surface of the fixing ring abuts against the plurality of support members.

[0011] As a preferred technical solution of the utility model, a limit assembly is provided on the outer peripheral wall of the fixing ring corresponding to each clamping jaw position, and the limit assembly includes at least two positioning bolts installed on the outer peripheral surface of the fixing ring and located on both sides of the clamping jaw.

[0012] As a preferred technical solution of the utility model, three support rods are provided and the three support rods are arranged in a circular array around the lifting assembly.

[0013] To sum up, the beneficial effects of the utility model are as follows: the crankshaft assembly is placed on the base of the disassembly mechanism by an aerial crane, the clamping directions of the three jaws are adjusted, the clamping jaws are facing outwards before clamping, and when the bearing to be disassembled corresponds to the position of the clamping jaws, the clamping jaws are aligned inwards with the upper and lower end surfaces of the bearing, and the width of the clamping jaws can be greater than or equal to the thickness of the bearing. Finally, the fixing ring is put on to prevent the clamping jaws from collapsing, and the jack is started. The jack will apply an upward thrust to the crankshaft assembly, and the bearing cannot move upwards due to the limitation of the clamping jaws. Finally, when the bearing falls off, it falls on the detachable claws, and the bearing is removed from the crankshaft. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural schematic diagram of the crankshaft assembly of the utility model when it is fixed to the disassembly mechanism;

[0015] Figure 2 It is a structural schematic diagram of the disassembly mechanism of the utility model;

[0016] Figure 3 It is the front view of the disassembly structure of the utility model;

[0017] Figure 4 yes Figure 2 Enlarged view of part A;

[0018] Figure 5 It is a structural schematic diagram of the clamping jaws in the utility model.

[0019] Figure numerals: 1. base; 2. lifting assembly; 3. clamping assembly; 4. lifting surface; 5. support rod; 6. clamping claw; 7. clamping mouth; 8. threaded section; 9. nut; 10. work surface; 11. support member; 12. fixing ring; 13. positioning bolt. DETAILED DESCRIPTION

[0020] In order to make the technical means, creative features, objectives and effects of the present invention easy to understand, the present invention is further described below in conjunction with specific embodiments and drawings, but the following embodiments are only preferred embodiments of the present invention, not all. Based on the embodiments in the implementation mode, other embodiments obtained by those skilled in the art without creative work are all within the protection scope of the present invention.

[0021] The specific embodiments of the present utility model are described below in conjunction with the accompanying drawings.

[0022] like Figures 1 to 5 A disassembly mechanism for separating a bearing and a crankshaft is shown, comprising a base 1, a lifting assembly 2 and a clamping assembly 3 arranged on the base 1, wherein the lifting assembly 2 has a lifting surface 4 for supporting a workpiece, and the clamping assembly 3 comprises a plurality of support rods 5 arranged around the lifting assembly 2 and a clamping jaw 6 is arranged at the upper end of the support rod 5, wherein the direction of the clamping opening 7 of the clamping jaw 6 is adjustable and the clamping opening 7 is arranged inward when the clamping jaw 6 is clamped.

[0023] The first method: the support rod 5 is fixed to the base 1 by a locking piece and the circumferential position of the support rod 5 is adjustable, the clamping jaw 6 is fixed or integrally formed on the support rod 5, the locking piece can be a bolt, a threaded hole is opened on the outer wall of the support rod 5 and the threaded hole is perpendicular to the axial direction of the support rod 5, a through hole is set on the outer wall of the clamping jaw 6, when the clamping mouth 7 of the clamping jaw 6 faces inward, the through hole corresponds to the threaded hole, and the bolt can be tightened by aligning the through hole and the threaded hole, and the bolt can be removed when adjusting the angle. In this structure, the position of the support rod 5 is fixed, and only the angle of the clamping jaw 6 is adjusted, and the crankshaft assembly is moved to a suitable position in cooperation with the lifting assembly 2 so that the bearing to be replaced reaches the position of the clamping jaw 6.

[0024] The second method: a threaded section 8 is provided at the lower end of the support rod 5, and a through hole is provided on the base 1 for the threaded section 8 to pass through. Two nuts 9 are threadedly connected to the threaded section 8, and the two nuts 9 are respectively abutted against the upper and lower end surfaces of the through hole portion of the base 1. A work table 10 is provided on the base 1, and the through hole is opened on the work table 10. The two nuts 9 on the same support rod 5 are respectively abutted against the upper and lower end surfaces of the work table 10. The axial position of the support rod 5 can be adjusted to make the clamp 6 correspond to the bearing to be disassembled.

[0025] Working principle: Place the crankshaft assembly on the base 1 of the disassembly mechanism with an overhead crane, adjust the directions of the jaws 7 of the three jaws 6, with the jaws 7 facing outwards before clamping. When the bearing to be disassembled corresponds to the position of the jaws 6, align the jaws 7 of the jaws 6 inwards with the upper and lower end surfaces of the bearing. The width of the jaws 7 can be greater than or equal to the thickness of the bearing. Finally, put on the fixing ring 12 to prevent the jaws 6 from collapsing, start the jack, and the jack will apply an upward thrust to the crankshaft assembly, while the bearing cannot move upwards due to the limit of the jaws 6. Finally, when the bearing falls off, it falls on the detachable claws, completing the removal of the bearing from the crankshaft.

[0026] The lifting assembly 2 includes a jack, or an actuator such as a cylinder or an electric cylinder, which is arranged on the upper end of the base 1, and a support plate is arranged at the end of the output shaft, or a pneumatic lifting cylinder, or a servo motor, a screw rod, a movable plate, and a movable frame. The movable plate is slidably installed on the movable frame, and the movable plate cooperates with the screw rod thread. The servo motor drives the screw rod to rotate. The above structures are all common lifting structures on the market, so no corresponding drawings are made.

[0027] A support member 11 is provided outside each clamping jaw 6, and also includes a fixing ring 12 which is sleeved outside a number of clamping jaws 6, and the lower end surface of the fixing ring 12 abuts against a number of support members 11. The support member 11 adopts a positioning pin or a bolt, which is inserted into the outer peripheral surface of the fixing ring 12 or threadedly connected to the outer peripheral surface of the fixing ring 12.

[0028] The outer wall of the fixing ring 12 is provided with a limit assembly corresponding to the position of each clamping jaw 6. The limit assembly includes at least two positioning bolts 13 installed on the outer surface of the fixing ring 12 and located on both sides of the clamping jaw 6, which can prevent the fixing ring 12 from rotating circumferentially.

[0029] There are three support rods 5 , which are arranged in a circular array around the lifting assembly 2 . There may also be two support rods 5 , which are symmetrically arranged on both sides of the lifting assembly 2 .

[0030] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments, and the above embodiments and descriptions are only preferred examples of the utility model, and are not used to limit the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected, and the scope of protection of the utility model is defined by the attached claims and their equivalents.

Claims

1. A disassembly mechanism capable of separating a bearing from a crankshaft, characterized in that: The invention comprises a base (1), a lifting assembly (2) arranged on the base (1), and a clamping assembly (3); the lifting assembly (2) has a lifting surface (4) for supporting a workpiece; the clamping assembly (3) comprises a plurality of support rods (5) arranged around the lifting assembly (2); and the upper ends of the support rods (5) are provided with clamping jaws (6); the direction of the clamping opening (7) of the clamping jaws (6) is adjustable, and the clamping opening (7) is arranged inward when the clamping jaws (6) are clamped.

2. The disassembly mechanism capable of separating the bearing from the crankshaft according to claim 1, characterized in that: The support rod (5) is fixed or integrally formed on the base (1); the clamping jaw (6) is rotatably mounted on the support rod (5); and a locking piece is provided on the clamping jaw (6) to limit its circumferential rotation.

3. The disassembly mechanism capable of separating the bearing from the crankshaft according to claim 1, characterized in that: The clamping jaw (6) is fixed to or integrally formed with the support rod (5); a threaded section (8) is provided at the lower end of the support rod (5); a through hole for the threaded section (8) to pass through is provided on the base (1); two nuts (9) are threadedly connected to the threaded section (8), and the two nuts (9) respectively abut against the upper and lower end surfaces of the through hole portion of the base (1).

4. The disassembly mechanism capable of separating the bearing from the crankshaft according to claim 3, characterized in that: A work surface (10) is provided on the base (1), the through hole is opened on the work surface (10), and two nuts (9) on the same support rod (5) respectively abut against upper and lower end surfaces of the work surface (10).

5. The disassembly mechanism capable of separating a bearing from a crankshaft according to claim 1, characterized in that: The lifting assembly (2) comprises a lifting top arranged on the upper end of the base (1).

6. The disassembly mechanism capable of separating a bearing from a crankshaft according to claim 1, characterized in that: Each of the clamping jaws (6) is provided with a support member (11) outside, and also includes a fixing ring (12) sleeved outside the clamping jaws (6), and the lower end surface of the fixing ring (12) abuts against the supporting members (11).

7. The disassembly mechanism capable of separating the bearing from the crankshaft according to claim 6, characterized in that: The outer peripheral wall of the fixing ring (12) is provided with a limit assembly corresponding to the position of each clamping jaw (6), and the limit assembly comprises at least two positioning bolts (13) installed on the outer peripheral surface of the fixing ring (12) and located on both sides of the clamping jaw (6).

8. The disassembly mechanism capable of separating a bearing from a crankshaft according to claim 1, characterized in that: The support rods (5) are provided in three numbers and the three support rods (5) are arranged in a circular array around the lifting assembly (2).

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