Coal chemical pump bearing quick dismounting device
By designing a quick disassembly and assembly device that includes a base, bracket, heater, and jack, the problem of difficult disassembly of bearings in coal chemical pumps was solved, enabling fast and safe bearing disassembly and assembly, improving equipment maintenance efficiency and reducing costs.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHANXI LUAN COAL BASED CLEAN ENERGY
- Filing Date
- 2025-08-12
- Publication Date
- 2026-07-24
AI Technical Summary
The bearings of coal chemical pumps are difficult to remove quickly during disassembly, and conventional disassembly methods can easily damage the pump shaft, resulting in long maintenance time and high costs.
A quick disassembly and assembly device was designed, comprising a base, bracket, workpiece support pad, top pressure shaft, spring, jack, and heater. The bearing is heated by the heater, and the pump shaft is separated from the bearing by the jack, achieving non-destructive disassembly and assembly.
It enables quick disassembly and assembly of bearings of different specifications, reduces maintenance time, lowers costs, ensures the safety of the pump shaft, and improves equipment maintenance efficiency.
Smart Images
Figure CN224544392U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of maintenance technology for coal chemical pumps, specifically a quick disassembly and assembly device for coal chemical pump bearings. Background Technology
[0002] Pumps and other rotating equipment in coal chemical production require regular maintenance, especially rotating parts such as bearings, which have a limited service life and need to be replaced after reaching that period. The bearings are interference-fitted to the shaft, requiring heating for disassembly and installation. After 5000 hours or more of operation, they may become firmly attached to the pump shaft, making disassembly extremely difficult. Conventional disassembly methods are time-consuming and prone to damaging the pump shaft, resulting in lengthy repair times and the inability to have backup equipment due to shaft damage. Utility Model Content
[0003] This invention overcomes the shortcomings of existing technologies and proposes a quick disassembly and assembly device for coal chemical pump bearings; it can be used for the quick disassembly and installation of chemical pump bearings, solving the problems of difficult disassembly of coal chemical pump bearings and pump shaft damage caused by disassembly.
[0004] To achieve the above objectives, this utility model is implemented through the following technical solution: A quick assembly and disassembly device for bearings of a coal chemical pump includes a base, a bracket, a workpiece support pad, a top pressure shaft, a spring, a jack, a heater, and a movable pressure bracket; A bracket is fixed on the base, and a top cover is fixedly connected to the top of the bracket; two workpiece support pads are connected to the bracket, and the height of the workpiece support pads on the bracket is adjustable; the bearing part of the pump bearing is placed on the two workpiece support pads, and the pump shaft of the pump bearing is located between the two workpiece support pads; a heater for heating the pump bearing is connected to the bracket. A spring is connected to the bottom of the top cover. The end of the spring away from the top cover is connected to the movable pressure bracket. The upper part of the movable pressure bracket is fixedly connected to the base of the jack. The bottom of the movable pressure bracket is fixedly connected to the top of the top pressure shaft. The top pressure shaft and the pump shaft in the pump bearing are in the same vertical direction.
[0005] Furthermore, the bottom of the four brackets is fixed to the four corners of the base, and the top of the four brackets is fixedly connected to the top cover. The brackets are made of channel steel.
[0006] Furthermore, the support has multiple evenly arranged adjustment holes in the vertical direction. Support rods are inserted into the corresponding adjustment holes on the two supports on the same side. After the support rods are inserted into the two supports, they are fixed with bolts. Two workpiece support pads are placed on the two support rods on both sides respectively.
[0007] Furthermore, the two ends of the two workpiece support pads are respectively slidably engaged with the two corresponding brackets.
[0008] Furthermore, it also includes bolt struts. The two ends of the workpiece support pad are symmetrically provided with connection holes. The bolt struts pass through the connection holes of the two workpiece support pads to connect and fix the two workpiece support pads. The two bolt struts and the two workpiece support pads together form a space for placing the pump bearing.
[0009] Furthermore, the same heater is connected to the two supports on the same side via electric push rods. The heater has an electric heating wire inside and a semi-circular arc structure on the outside. The semi-circular arc structure of the heater is adapted to the outer wall of the pump bearing.
[0010] Furthermore, multiple strong springs are connected to the bottom of the top cover. The ends of the multiple strong springs away from the top cover are connected to a movable pressure bracket. The movable pressure bracket is a square plate structure, and the end of the movable pressure bracket is slidably engaged with the bracket.
[0011] Furthermore, the base is equipped with self-locking casters.
[0012] The beneficial effects of this utility model compared to the prior art are as follows: This utility model enables the non-destructive removal and installation of bearings of different specifications and types, improving equipment maintenance efficiency. This specialized quick bearing removal device can be heated to achieve non-destructive and rapid removal of damaged bearings. Furthermore, the device is inexpensive and achieves the goal of rapid disassembly and assembly, making it suitable for widespread application. Specifically: (1) Simple operation and low cost. Existing materials such as channel steel, jacks, bolts, and heaters can be used to reduce material investment; non-fixed installation can be recycled and reused multiple times.
[0013] (2) Safe, efficient, convenient and quick. It can be assembled and used on-site during maintenance, and can be operated by two people. The base is equipped with casters for easy movement. After heating the bearing with a heater, it can be separated with a jack, saving manpower and ensuring operational safety.
[0014] (3) The special bearing disassembly and assembly device is easy to operate, requires less manpower, and can be operated by a single person. It can disassemble and assemble pump shafts of different sizes and bearings of different specifications. It can be used for disassembly and installation. It can be used multiple times after one-time production without loss.
[0015] (4) The special bearing disassembly and assembly device uses a hydraulic jack as power to separate the pump shaft from the bearing, saving effort and without damaging the pump shaft.
[0016] (5) The bearing disassembly and assembly device is equipped with a heating device, which makes it easy to heat the bearings that are difficult to disassemble on-site, reducing the workload, and also adds casters for easy use. Attached Figure Description
[0017] Figure 1 This is a schematic diagram of the structure of the quick disassembly and assembly device for the bearings of the coal chemical pump described in this utility model; Figure 2 This is a top view of the pump bearing placed on the workpiece support plate and bolt struts. Figure 3 This is a diagram of the external structure of the heater; In the diagram: 1. Moving wheel; 2. Base; 3. Bracket; 4. Adjustment hole; 5. Workpiece support pad; 6. Bolt strut; 7. Top pressure shaft; 8. Spring; 9. Jack; 10. Heater; 11. Movable pressure bracket; 12. Support rod; 13. Top cover; 14. Bearing part; 15. Electric push rod; 16. Pump shaft. Detailed Implementation
[0018] To make the technical problem to be solved, the technical solution, and the beneficial effects of this utility model clearer, this utility model will be further described in detail with reference to the embodiments and accompanying drawings. It should be understood that the specific embodiments described herein are merely illustrative of this utility model and are not intended to limit it. The technical solution of this utility model will be described in detail below with reference to the embodiments and accompanying drawings, but the scope of protection is not limited thereto.
[0019] See Figures 1 to 3 This embodiment proposes a quick disassembly and assembly device for a coal chemical pump bearing, including a base 2, a bracket 3, a workpiece support pad 5, a bolt support rod 6, a top pressure shaft 7, a spring 8, a jack 9, a heater 10, a movable pressure bracket 11, and a support rod 12. The base 2 is equipped with four casters 1, which are existing self-locking casters; the bottom of the four brackets 3 are fixed at the four corners of the base 2, and the top of the four brackets 3 is fixedly connected to the top cover 13. The brackets 3 are channel steel. Multiple evenly arranged adjustment holes 4 are sequentially opened vertically on the bracket 3. Support rods 12 are inserted into corresponding adjustment holes 4 on two brackets 3 on the same side, and then fixed with bolts after being inserted into the two brackets 3. Two workpiece support pads 5 are placed on the two support rods 12 on both sides. The two ends of the two workpiece support pads 5 are slidably engaged with the corresponding two brackets 3. Symmetrical connection holes are provided at both ends of the workpiece support pads 5. Bolt struts 6 pass through the connection holes of the two workpiece support pads 5 to connect and fix them. The two bolt struts 6 and the two workpiece support pads 5 together form a space for placing the pump bearing. The same heater 10 is connected to the two brackets 3 on the same side via electric push rods 15. The heater 10 contains an electric heating wire and has a semi-circular arc structure on its exterior. The semi-circular arc structure of the heater 10 is adapted to the outer wall of the bearing for heating the bearing. The heater 10 is located above the two bolt struts 6 and the two workpiece support pads 5.
[0020] Multiple springs 8 are connected to the bottom of the top cover 13. The ends of the multiple springs 8 away from the top cover 13 are connected to a movable pressure bracket 11. The movable pressure bracket 11 is a square plate structure. The end of the movable pressure bracket 11 is slidably engaged with the bracket 3. The upper part of the movable pressure bracket 11 is fixedly connected to the base of the jack 9. The bottom of the movable pressure bracket 11 is fixedly connected to the top of the top pressure shaft 7. The top pressure shaft 7 and the pump shaft 16 in the pump bearing are in the same vertical direction.
[0021] It should be noted that the spring 8 is sufficient to support the weight of the movable pressure support 11, the top pressure shaft 7, and the jack 9.
[0022] The method for using the quick disassembly and assembly device for coal chemical pump bearings proposed in this embodiment is as follows: Step 1: First, according to the height and size of the pump bearing, place the workpiece support plate 5 on the bracket 3 at a suitable height using the support rod 12. Then, insert the bolt support rod 6 into the corresponding connecting holes of the two workpiece support plates 5 and fix it with nuts. The two bolt support rods 6 and the two workpiece support plates 5 together form a space for placing the pump bearing. Step 2: Place the bearing portion 14 of the pump bearing on the two bolt support rods 6 and the two workpiece support pads 5, with the pump shaft 16 at the center of the bearing portion 14 located directly below the top pressure shaft 7; then extend the electric push rod 15 to bring the heater 10 close to the bearing portion 14 to heat the outer wall of the pump bearing, causing the bearing portion 14 of the pump bearing to expand due to heat; use a temperature gun to measure the temperature of the pump bearing. Step 3: When the temperature reaches the required level, retract the heater 10 using the electric push rod 15; then start the jack 9, which holds the top cover 13, causing the movable pressure bracket 11 to drive the top pressure shaft 7 to descend. The top pressure shaft 7 then pushes the pump shaft 16 downward out of the bearing part 14, thereby removing the pump shaft 16.
[0023] This device enables the non-destructive removal and installation of bearings of different specifications and types, improving equipment maintenance efficiency. After the special quick bearing removal device is manufactured, it can be heated to achieve non-destructive and rapid removal of damaged bearings, reducing the time required to remove one bearing from 2 hours to 20 minutes. It also features no damage to the pump shaft, greatly shortening equipment maintenance time, improving maintenance efficiency, reducing employee workload, and is inexpensive, making it suitable for widespread application.
[0024] The above description is a further detailed explanation of the present invention in conjunction with specific preferred embodiments. It should not be considered that the specific embodiments of the present invention are limited to this. For those skilled in the art, several simple deductions or substitutions can be made without departing from the present invention, and all such deductions or substitutions should be considered to fall within the scope of patent protection determined by the submitted claims.
Claims
1. A quick disassembly and assembly device for bearings of a coal chemical pump, characterized in that, Includes base (2), bracket (3), workpiece support pad (5), top pressure shaft (7), spring (8), jack (9), heater (10) and movable pressure bracket (11); A bracket (3) is fixed on the base (2), and a top cover (13) is fixedly connected to the top of the bracket (3); two workpiece support pads (5) are connected on the bracket (3), and the height of the workpiece support pads (5) on the bracket (3) is adjustable; the bearing part (14) of the pump bearing is placed on the two workpiece support pads (5), and the pump shaft (16) of the pump bearing is located between the two workpiece support pads (5); a heater (10) for heating the pump bearing is connected on the bracket (3); a spring (8) is connected to the bottom of the top cover (13), and the end of the spring (8) away from the top cover (13) is connected to the movable pressure bracket (11). The upper part of the movable pressure bracket (11) is fixedly connected to the base of the jack (9), and the bottom of the movable pressure bracket (11) is fixedly connected to the top of the pressure shaft (7). The pressure shaft (7) and the pump shaft (16) in the pump bearing are in the same vertical direction.
2. The quick disassembly and assembly device for a coal chemical pump bearing according to claim 1, characterized in that, The bottom of the four brackets (3) is fixed at the four corners of the base (2), and the top of the four brackets (3) is fixedly connected to the top cover (13). The brackets (3) are channel steel.
3. The quick disassembly and assembly device for a coal chemical pump bearing according to claim 1, characterized in that, Multiple evenly arranged adjustment holes (4) are opened in the vertical direction on the bracket (3). Support rods (12) are inserted into the corresponding adjustment holes (4) on the two brackets (3) on the same side. After the support rods (12) are inserted into the two brackets (3), they are fixed by bolts. Two workpiece support pads (5) are placed on the two support rods (12) on both sides respectively.
4. The quick disassembly and assembly device for a coal chemical pump bearing according to claim 3, characterized in that, The two ends of the two workpiece support pads (5) are respectively slidably engaged with the two corresponding brackets (3).
5. The quick disassembly and assembly device for a coal chemical pump bearing according to claim 1, characterized in that, It also includes bolt struts (6), and the workpiece support pads (5) are symmetrically provided with connecting holes at both ends. The bolt struts (6) pass through the connecting holes of the two workpiece support pads (5) to connect and fix the two workpiece support pads (5). The two bolt struts (6) and the two workpiece support pads (5) together form a space for placing the pump bearing.
6. The quick disassembly and assembly device for a coal chemical pump bearing according to claim 2, characterized in that, The same heater (10) is connected to the two brackets (3) on the same side by electric push rods (15). The heater (10) has an electric heating wire inside and a semi-circular arc structure on the outside. The semi-circular arc structure of the heater (10) is adapted to the outer wall of the pump bearing.
7. The quick disassembly and assembly device for a coal chemical pump bearing according to claim 1, characterized in that, Multiple strong springs (8) are connected to the bottom of the top cover (13). The ends of the multiple strong springs (8) away from the top cover (13) are connected to a movable pressure bracket (11). The movable pressure bracket (11) is a square plate structure. The end of the movable pressure bracket (11) is slidably engaged with the bracket (3).
8. The quick disassembly and assembly device for a coal chemical pump bearing according to claim 1, characterized in that, The base (2) is equipped with self-locking casters (1) at its bottom.