Roots vacuum pump bearing dismounting device

Abstract

The utility model belongs to the technical field of mechanical maintenance equipment, and discloses a Roots vacuum pump bearing dismounting device which comprises a fixed transverse frame, a pressing disc connected with a bearing seat is arranged at one end of the fixed transverse frame, a limiting disc opposite to the pressing disc is arranged on the fixed transverse frame, and the limiting disc is connected with the pressing disc. A displacement part connected with the limiting disc is arranged on the fixing transverse frame and used for driving the limiting disc to move in the direction facing / away from the pressing disc, a linear pushing part is arranged in the limiting disc, a through hole is formed in the middle of the pressing disc, and the diameter of the through hole is larger than the outer diameter of the bearing. Through the design of the displacement piece, the limiting disc can move along the fixing transverse frame so as to adapt to installation of bearings of different sizes, the linear propelling piece, the pressing disc and the limiting disc are combined for use, the diameter of the through hole is larger than the outer diameter of the bearing, and the bearing is allowed to be stably and smoothly pushed into the bearing seat through the linear propelling piece.

Description

Technical Field

[0001] The utility model belongs to the technical field of mechanical maintenance equipment, in particular to a Roots vacuum pump bearing disassembly and assembly device. Background Art

[0002] Bearing installation is a critical and sensitive step in vacuum pump maintenance and repair. As a vital component supporting the Roots pump rotor, the bearing plays a crucial role in ensuring the rotor's rotational accuracy and reducing friction during movement. However, existing bearing installation methods present several issues that not only shorten the bearing's service life but can also negatively impact the performance of the entire vacuum pump.

[0003] First, due to the lack of dedicated installation tools, traditional bearing installation often relies on hammering, a method that can easily damage the bearing surface and affect the safe operation of the bearing. During the hammering process, the bearing surface may be damaged, which not only affects the appearance of the bearing, but more importantly, it may cause impurities to enter the bearing during assembly, causing wear or seizure during operation, reducing the bearing life and the operating efficiency of the pump.

[0004] Secondly, frequent hammering during assembly can also increase bearing clearance. This is because the hammering force acts unevenly on the bearing, causing deformation of the bearing's internal structure. Increased bearing clearance directly affects the smooth operation of the rotor, increasing pump vibration and noise, and increasing the frequency of bearing replacement, thereby increasing maintenance costs and workload.

[0005] In addition, the separation process of the bearing seat and the pump body side cover is also rather cumbersome, requiring two people to cooperate with each other using a jackscrew and a ratchet wrench to complete it. This is not only inefficient, but also increases the difficulty of operation and labor costs.

[0006] Therefore, in order to solve the above problems, a Roots vacuum pump bearing disassembly and assembly device is proposed to solve the above problems. Utility Model Content

[0007] (1) Technical problems solved

[0008] In order to solve the problems raised in the above background technology, the utility model provides a Roots vacuum pump bearing disassembly and assembly device to reduce bearing damage, increased clearance and operational complexity, thereby improving the reliability and maintenance efficiency of the fixed vacuum pump.

[0009] (2) Technical solution

[0010] To achieve the above-mentioned object, the present invention provides the following technical solution: a Roots vacuum pump bearing disassembly and assembly device, comprising a fixed cross frame, one end of the fixed cross frame is provided with a pressure plate connected to the bearing seat, the fixed cross frame is provided with a limit plate arranged opposite to the pressure plate, the fixed cross frame is provided with a displacement member connected to the limit plate, the displacement member is used to drive the limit plate to move toward / away from the pressure plate, a linear propulsion member is provided in the limit plate, a through hole is provided in the middle of the pressure plate, and the diameter of the through hole is larger than the outer diameter of the bearing;

[0011] When installing the bearing into the bearing seat:

[0012] As the output end of the linear propulsion member moves in a direction toward the pressure plate, the bearing is pushed through the through hole into the bearing seat;

[0013] When removing the bearing seat to the outside of the pump body side cover:

[0014] As the output end of the linear propulsion member moves in a direction toward the pressure plate, it presses against the bearing and pushes the bearing seat back to the outside of the pump body side cover.

[0015] Preferably, it further comprises a lifting platform, the lifting platform is provided with a top platform, and the fixed cross frame is arranged on the top platform.

[0016] Preferably, the linear propulsion member includes a hydraulic propeller, an oil tank and a plunger pump, the hydraulic propeller is arranged in a limit plate, the oil suction port of the plunger pump is connected to the oil tank, the oil outlet of the plunger pump is connected to the oil port of the hydraulic propeller, and the oil return port of the hydraulic propeller is connected to the oil tank.

[0017] Preferably, an abutment plate is provided at the output end of the hydraulic thruster, and the diameter of the abutment plate is located between the outer diameter and the inner diameter of the bearing.

[0018] Preferably, the fixed cross frame includes at least two cross plates, at least two of the cross plates are fixedly connected, the limiting plate and the pressure plate are both arranged on the cross plates, and the limiting plate and the pressure plate are both annular plates and are coaxially arranged.

[0019] Preferably, the displacement member includes a displacement rod and a clamping rod, and a fixed plate is provided between the adjacent ends of the displacement rod and the clamping rod. The limit plate is fixed between the relatively arranged fixed plates. A sliding groove is provided in the transverse plate, and a plurality of tooth grooves are provided on the transverse plate. The displacement rod and the clamping rod are respectively slidably arranged in the sliding groove and clamped in the tooth groove.

[0020] (3) Beneficial effects

[0021] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0022] The utility model uses the design of the displacement member to enable the limit plate to move along the fixed cross frame, thereby adapting to the installation of bearings of different sizes. It combines the use of a linear propulsion member, a pressure plate and a limit plate, and utilizes the design that the diameter of the through hole is larger than the outer diameter of the bearing, allowing the bearing to be pushed into the bearing seat smoothly and smoothly through the linear propulsion member. At the same time, during the disassembly of the bearing seat, the linear propulsion member can also effectively press the bearing and push the bearing seat back to the outside of the pump body side cover. Overall, the utility model avoids the bearing damage that may be caused by traditional methods such as knocking, thereby improving the service life and installation quality of the bearing, simplifying the disassembly steps, and improving the efficiency and safety of bearing installation and bearing seat disassembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a three-dimensional structural diagram of the utility model;

[0024] Figure 2 This is a side view of the utility model;

[0025] Figure 3 This is the front view of the utility model;

[0026] Figure 4 It is a top view of the utility model.

[0027] In the figure: 1. Fixed cross frame; 11. Cross plate; 2. Pressure plate; 3. Limit plate; 4. Displacement member; 41. Displacement rod; 42. Clamping rod; 43. Fixed plate; 44. Slide groove; 45. Tooth groove; 5. Linear propulsion member; 51. Hydraulic thruster; 52. Oil tank; 53. Plunger pump; 54. Abutment plate; 6. Through hole; 7. Lifting platform; 8. Top platform. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described 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.

[0029] like Figures 1 to 4 As shown, the utility model provides a Roots vacuum pump bearing disassembly and assembly device, including a fixed cross frame 1, a pressure plate 2 connected to the bearing seat is provided on one end of the fixed cross frame 1, a limit plate 3 arranged opposite to the pressure plate 2 is provided on the fixed cross frame 1, a displacement member 4 connected to the limit plate 3 is provided on the fixed cross frame 1, the displacement member 4 is used to drive the limit plate 3 to move toward / away from the pressure plate 2, a linear propulsion member 5 is provided in the limit plate 3, a through hole 6 is provided in the middle of the pressure plate 2, and the diameter of the through hole 6 is larger than the outer diameter of the bearing;

[0030] When installing the bearing into the bearing seat:

[0031] As the output end of the linear propulsion member 5 moves toward the pressure plate 2, the bearing is pushed into the bearing seat through the through hole 6;

[0032] When removing the bearing seat to the outside of the pump body side cover:

[0033] As the output end of the linear propulsion member 5 moves toward the pressure plate 2 , it presses against the bearing and pushes the bearing seat back to the outside of the pump body side cover.

[0034] Among them, regarding the structural design between the pressure plate 2, the limit plate 3 and the displacement member 4:

[0035] The pressure plate 2 is provided with a mounting hole, through which it can be fixed to the bearing seat;

[0036] The transmission of the displacement member 4 allows the limit plate 3 to move along the fixed cross frame 1. Therefore, the distance between the pressure plate 2 and the limit plate 3 can be adjusted, that is, it can adapt to the placement of bearings of different sizes, thereby improving the versatility and flexibility of the device.

[0037] Regarding the structural design of the linear propulsion member 5 and the through hole 6:

[0038] On the basis of achieving the positioning of the bearing and the inner ring of the bearing seat, the bearing is installed by smoothly pushing the linear thruster 5, which reduces the risk of impact and damage to the bearing during the installation process and avoids the problems of bearing offset or uneven force that may be caused by the traditional knocking installation method. When disassembling the bearing seat, the linear thruster 5 can also play a role. By pressing the bearing and pushing back the bearing seat, the disassembly process is simplified and the disassembly efficiency is improved.

[0039] On the basis of the above scheme, further preferred schemes include:

[0040] The utility model further comprises a lifting platform 7 , on which a top platform 8 is provided, and the fixed horizontal frame 1 is provided on the top platform 8 .

[0041] The design of the lifting platform 7 allows the operator to adjust the height of the fixed cross frame 1 as needed, thereby more conveniently adapting to the installation of bearings at different heights. This reduces the inconvenience of bending or climbing for the operator, and the top platform 8 provides a stable working surface and an installation surface for other equipment.

[0042] Preferably, the linear propulsion member 5 includes a hydraulic propeller 51, an oil tank 52 and a plunger pump 53. The hydraulic propeller 51 is arranged in the limit plate 3. The oil suction port of the plunger pump 53 is connected to the oil tank 52. The oil outlet of the plunger pump 53 is connected to the oil port of the hydraulic propeller 51. The oil return port of the hydraulic propeller 51 is connected to the oil tank 52.

[0043] An abutment plate 54 is provided at the output end of the hydraulic thruster 51 , and the diameter of the abutment plate 54 is located between the outer diameter and the inner diameter of the bearing.

[0044] The output end of the hydraulic thruster 51 is provided with a butt plate 54 , the diameter of which is between the outer diameter and the inner diameter of the bearing, so that precise control and positioning can be achieved when the bearing is installed, ensuring that the installation position of the bearing is accurate.

[0045] The smooth propulsion force provided by the hydraulic thruster 51, oil tank 52 and plunger pump 53 helps to reduce the impact on the bearings during installation and disassembly, ensuring that the bearings are installed in place without damage. The design of the abutment plate 54 at the output end avoids direct contact with the inner or outer ring of the bearing, reduces the damage that may be caused to the bearing during installation and disassembly, and extends the service life of the bearing. The design of the abutment plate 54 enables it to adapt to bearings of different sizes, and its adaptability is better.

[0046] Preferably, the fixed cross frame 1 includes at least two cross plates 11, which are fixedly connected to each other. The limiting plate 3 and the pressure plate 2 are both arranged on the cross plates 11. The limiting plate 3 and the pressure plate 2 are both annular plates and are coaxially arranged.

[0047] The design of multiple cross plates 11 helps to evenly distribute the load when installing or disassembling the bearing, reduces the pressure on a single cross plate 11, and thus reduces the risk of damage to the cross plate 11. The coaxial setting of the limit plate 3 and the pressure plate 2 ensures the alignment accuracy of the bearing during the installation process, which helps to improve the installation quality of the bearing.

[0048] Preferably, the displacement member 4 includes a displacement rod 41 and a clamping rod 42, and a fixed plate 43 is provided between the adjacent ends of the displacement rod 41 and the clamping rod 42. The limit plate 3 is fixed between the relatively arranged fixed plates 43, and a sliding groove 44 is opened in the cross plate 11. A plurality of tooth grooves 45 are provided on the cross plate 11. The displacement rod 41 and the clamping rod 42 are respectively slidably arranged in the sliding groove 44 and clamped in the tooth groove 45.

[0049] By sliding the displacement rod 41 and replacing the clamping rod 42 to clamp at different tooth grooves 45 positions, the displacement of the limit plate 3 can be accurately controlled, ensuring that the position distance between the pressure plate and the limit plate can be accurately controlled when installing and disassembling the bearing, thereby improving the accuracy and efficiency of the operation, and the overall structure has low maintenance costs and short maintenance time.

[0050] The working principle and use process of this utility model:

[0051] Fix the pressure plate 2 on the bearing seat. According to the size of the bearing, lift the clamping rod 42 and move the fixing plate 43 to the specified position. Clamp the clamping rod 42 with the corresponding tooth groove 45, change and determine the distance between the hydraulic thruster 51 and the bearing seat. The bearing is in the through hole 6 and is preliminarily matched with the bearing seat. Then, pressurize the hydraulic thruster 51 through the plunger pump 53 to push the bearing smoothly into the bearing seat. When removing the bearing seat, the abutment plate 54 at the output end of the hydraulic thruster 51 uses the end face of the shaft where the bearing is located as the fulcrum. Pressurize the hydraulic thruster 51 through the plunger pump 53 to push the bearing seat out of the side cover of the pump body, thereby realizing the two operations of installing the bearing and removing the bearing seat.

[0052] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0053] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A Roots vacuum pump bearing disassembly and assembly device, characterized by: The invention comprises a fixed cross frame (1), one end of the fixed cross frame (1) is provided with a pressure plate (2) connected to the bearing seat, the fixed cross frame (1) is provided with a limit plate (3) arranged opposite to the pressure plate (2), the fixed cross frame (1) is provided with a displacement member (4) connected to the limit plate (3), the displacement member (4) is used to drive the limit plate (3) to move in a direction toward / away from the pressure plate (2), a linear propulsion member (5) is provided in the limit plate (3), and a through hole (6) is provided in the middle of the pressure plate (2), and the diameter of the through hole (6) is larger than the outer diameter of the bearing; When installing the bearing into the bearing seat: As the output end of the linear propulsion member (5) moves in a direction toward the pressure plate (2), the bearing is pushed into the bearing seat through the through hole (6); When removing the bearing seat to the outside of the pump body side cover: As the output end of the linear propulsion member (5) moves in a direction toward the pressure plate (2), it presses against the bearing and pushes the bearing seat back to the outside of the pump body side cover.

2. The Roots vacuum pump bearing disassembly and assembly device according to claim 1, characterized in that: It also includes a lifting platform (7), a top platform (8) is provided on the lifting platform (7), and the fixed horizontal frame (1) is provided on the top platform (8).

3. A Roots vacuum pump bearing disassembly and assembly device according to claim 1 or 2, characterized in that: The linear propulsion member (5) comprises a hydraulic propeller (51), an oil tank (52) and a plunger pump (53); the hydraulic propeller (51) is arranged in the limit plate (3); the oil suction port of the plunger pump (53) is connected to the oil tank (52); the oil outlet of the plunger pump (53) is connected to the oil port of the hydraulic propeller (51); and the oil return port of the hydraulic propeller (51) is connected to the oil tank (52).

4. The Roots vacuum pump bearing disassembly and assembly device according to claim 3, characterized in that: The output end of the hydraulic thruster (51) is provided with an abutment plate (54), and the diameter of the abutment plate (54) is located between the outer diameter and the inner diameter of the bearing.

5. The Roots vacuum pump bearing disassembly and assembly device according to claim 3, characterized in that: The fixed cross frame (1) comprises at least two cross plates (11), at least two of the cross plates (11) are fixedly connected to each other, the limiting plate (3) and the pressure plate (2) are both arranged on the cross plates (11), and the limiting plate (3) and the pressure plate (2) are both annular plates and are coaxially arranged.

6. The Roots vacuum pump bearing disassembly and assembly device according to claim 5, characterized in that: The displacement member (4) includes a displacement rod (41) and a clamping rod (42). A fixing plate (43) is provided between adjacent ends of the displacement rod (41) and the clamping rod (42). The limit plate (3) is fixed between the relatively arranged fixing plates (43). A sliding groove (44) is provided in the transverse plate (11). A plurality of tooth grooves (45) are provided on the transverse plate (11). The displacement rod (41) and the clamping rod (42) are respectively slidably provided in the sliding groove (44) and clamped in the tooth groove (45).

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