Vacuum pump rotor clamping tool

Abstract

The utility model discloses a vacuum pump rotor clamping tool, which belongs to the technical field of vacuum pumps and comprises a driven shaft side bottom plate and a driving shaft side bottom plate, a support plate is fixedly connected between the driven shaft side bottom plate and the driving shaft side bottom plate, and a cross beam plate is fixedly connected onto the support plate. The cross beam plate is fixedly connected with a fixing plate used for adjusting the gap of the rotor, and a screw used for adjusting the height is arranged in the fixing plate. According to the utility model, firstly, the position of the rotor is clamped by the shaft stopper through the notch consistent with the radian of the outer surface of the rotor to ensure that the rotor is fixed at an accurate working position, and then, the height of the brass nut is adjusted by rotating the screw to enable the nut to abut against the other side of the rotor, so that the stable support and clearance adjustment of the rotor are realized; in the process, the stability and accuracy of operation are guaranteed through the overall structure of the tool, the rotor does not need to be fixed manually, the assembling efficiency is improved, and the scratching risk in the operation process is reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of vacuum pumps, in particular to a vacuum pump rotor clamping tool. BACKGROUND

[0002] A vacuum pump is a device used to extract gas or vapor from a closed space to reduce gas pressure and create a vacuum environment. It is widely used in industrial manufacturing, laboratory research and medical fields, such as providing a dust-free environment in semiconductor manufacturing, performing vacuum distillation in chemical experiments, and processing gas in medical equipment. The vacuum pump works by cooperating with core components such as rotors and stators to achieve gas suction, compression and discharge. It includes various types such as mechanical, liquid ring and molecular types. Its performance and working efficiency are closely related to the sealing performance in the pump, the precision and gap control between components. It is one of the indispensable key devices in modern industry and technology.

[0003] In actual implementation process, in the existing vacuum pump assembly process, the rotor gap can only be adjusted and assembled by assembling personnel fixing the rotor with their hands, and another person tightening, which greatly wastes labor cost, and there is a risk of scratching the rotor by fixing it with hands. CONTENT OF THE UTILITY MODEL

[0004] The purpose of the present application is to provide a vacuum pump rotor clamping tool to solve the problems raised in the background technology.

[0005] In order to achieve the above purpose, the present application provides the following technical scheme: a vacuum pump rotor clamping tool, comprising a driven shaft side bottom plate and a driving shaft side bottom plate, a support plate is fixedly connected between the driven shaft side bottom plate and the driving shaft side bottom plate, a cross beam plate is fixedly connected on the support plate, a fixed plate for adjusting the rotor gap is fixedly connected on the cross beam plate, a screw for adjusting the height is arranged in the fixed plate, a brass nut is threadedly connected below the screw, a shaft stopper for clamping the rotor is fixedly connected on the top of the cross beam plate, a fixing device for applying supporting force is fixedly connected in the support plate, and a limiting device for limiting the rotation direction of the brass nut is arranged in the fixing device.

[0006] Optionally, the shaft stopper is provided with a notch consistent with the curvature of the outer surface of the rotor.

[0007] Optionally, the fixed plate is fixedly connected with the cross beam plate by a plurality of bolts, the bolts are uniformly distributed around the fixed plate, and the brass nut and the screw are connected by standard threads.

[0008] Optionally, the driven shaft side bottom plate and the driving shaft side bottom plate are respectively provided with reinforcing ribs, and the support plate and the cross beam plate are fixed by welding.

[0009] Optionally, the fixing device comprises a mounting plate fixedly connected in the support plate, a horizontal plate fixedly connected below the mounting plate, a rotating rod rotatably connected in the horizontal plate, and a ratchet wheel sleeved on the rotating rod.

[0010] Optionally, a telescopic rod is fixedly connected on the rotating rod, and the telescopic rod is fixedly connected with the brass nut.

[0011] Optionally, the limiting device comprises a connecting block fixedly connected below the horizontal plate, a return spring fixedly connected on one side of the connecting block, a rotating plate fixedly connected on one side of the return spring, a rotating shaft penetratingly arranged in the rotating plate, and the rotating plate is clamped outside the ratchet wheel.

[0012] Optionally, the rotating shaft is penetratingly connected in the horizontal plate, and the rotating plate and the rotating shaft are formed in a rotating connection.

[0013] Compared with the prior art, the present application has at least the following beneficial effects:

[0014] 1. In the utility model, firstly, the shaft stopper clamps the position of the rotor by the notch consistent with the arc of the outer surface of the rotor, ensures that the rotor is fixed in the accurate working position, then, the height of the brass nut is adjusted by rotating the screw, the brass nut is tightly pressed on the other side of the rotor, the stable support and the gap adjustment of the rotor are realized, the stability and the accuracy of the operation are ensured through the overall structure of the tooling, the rotor does not need to be manually fixed, the assembly efficiency is improved, and the scratch risk in the operation is reduced.

[0015] 2. In the utility model, when the screw is rotated, the ratchet wheel is clamped with the rotating plate to limit the brass nut, prevents the brass nut from following the screw when the screw is rotated clockwise, when the height of the brass nut needs to be adjusted, the screw is only pulled, the brass nut is moved along the thread axis by the screw, and flexible adjustment is realized through the free sliding of the telescopic rod, the stability of the brass nut in the screw rotation process is ensured, the brass nut does not need to be additionally limited, the convenience and the accuracy of the operation are improved. BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to more directly illustrate the prior art and the present application, the following exemplary drawings are given. It should be understood that the specific shape, structure shown in the drawings should not be regarded as the limitation condition for realizing the present application; for example, based on the technical concept and the exemplary drawings disclosed in the present application, the person skilled in the art can easily make conventional adjustment or further optimization on the increase / decrease / attribute division of certain units (components), the specific shape, the positional relationship, the connection mode, the size ratio relationship, etc.

[0017] Figure 1 It is a three-dimensional structural schematic view of the vacuum pump rotor clamping tool provided in the first embodiment of the present application.

[0018] Figure 2 A three-dimensional structural schematic view of a vacuum pump rotor clamping tool fixing plate provided for the first embodiment of the present application;

[0019] Figure 3 A three-dimensional structural schematic view of a vacuum pump rotor clamping tool fixing device provided for the second embodiment of the present application;

[0020] Figure 4 A three-dimensional structural schematic view of a vacuum pump rotor clamping tool limiting device provided for the first embodiment of the present application.

[0021] Explanation of reference signs:

[0022] 1, driven shaft side bottom plate; 2, driving shaft side bottom plate; 3, support plate; 4, cross beam plate; 5, fixing plate; 6, brass nut; 7, screw; 8, shaft stopper; 9, fixing device; 91, mounting plate; 92, cross plate; 93, rotating rod; 94, ratchet wheel; 10, limiting device; 101, connecting block; 102, back-pulling spring; 103, rotating plate; 104, rotating shaft. DETAILED DESCRIPTION

[0023] The present application will be further described in detail below with reference to the accompanying drawings.

[0024] Please refer to Figures 1-4 ;

[0025] First embodiment:

[0026] The utility model provides a technical scheme: a vacuum pump rotor clamping tool, including driven shaft side bottom plate 1 and driving shaft side bottom plate 2, driven shaft side bottom plate 1 and driving shaft side bottom plate 2 are fixedly connected with support plate 3 between, support plate 3 is fixedly connected with crossbeam plate 4 on, crossbeam plate 4 is fixedly connected with the fixed plate 5 for adjusting rotor gap on, fixed plate 5 is fixedly connected with crossbeam plate 4 through bolt, bolt is evenly distributed in the periphery of fixed plate 5, can provide stable supporting effect, ensure that fixed plate 5 will not shake or deviate when adjusting screw 7, the existence of crossbeam plate 4 provides good structural stability, through the welding connection with support plate 3, further strengthen the rigidity of tool whole, provide reliable basic support for rotor gap adjustment, fixed plate 5 is equipped with screw 7 for adjusting height in, screw 7 downside is threadedly connected with brass nut 6, crossbeam plate 4 top fixedly connected with the shaft stopper 8 for clamping rotor, the slot of shaft stopper 8 is set with the arc of rotor outer surface conformity, realize the accurate clamping of rotor when adjusting gap, the arc slot design of shaft stopper 8 can reduce the uneven force condition of rotor, ensure the stability of rotor in the operation process, avoid the influence of loosening or deviation on adjustment accuracy, and the design that the rotor outer surface is attached can also effectively reduce the assembly difficulty of operating personnel, improve overall efficiency, support plate 3 is fixedly connected with the fixed device 9 for exerting supporting force in, and the fixed device 9 is equipped with the limiting device 10 for limiting the rotating direction of brass nut 6.

[0027] Specifically, as shown in Figures 1-2 The slot of shaft stopper 8 is set with the arc of rotor outer surface conformity, fixed plate 5 is fixedly connected with crossbeam plate 4 through a plurality of bolts, the bolts are evenly distributed in the periphery of fixed plate 5, brass nut 6 and screw 7 are connected through standard threads, screw 7 and brass nut 6 are connected through standard threads, the design of threaded connection not only facilitates the height adjustment of brass nut 6, but also ensures the smoothness and controllability of the adjustment process, the material of brass nut 6 is relatively soft, and the cooperation with screw 7 can reduce wear and tear, and also has good stability when applying jacking force, ensuring the fixing effect after adjusting the rotor gap;

[0028] Driven shaft side bottom plate 1 and driving shaft side bottom plate 2 are respectively provided with reinforcing ribs, and support plate 3 and crossbeam plate 4 are fixed by welding.

[0029] When working, first, the slot of shaft stopper 8 is used to clamp the position of the rotor with the arc of the rotor outer surface conformity, ensuring that the rotor is fixed at the accurate working position, then the height of brass nut 6 is adjusted by rotating screw 7, so that brass nut 6 jacks up the other side of the rotor, realizing the stable support and gap adjustment of the rotor, and this process ensures the stability and accuracy of the operation through the overall structure of the tool, without manually fixing the rotor, which not only improves the assembly efficiency, but also reduces the risk of scratching during operation.

[0030] Second embodiment:

[0031] Specifically, as shown in Figures 3-4 The fixing device 9 includes a mounting plate 91 fixedly connected in the support plate 3, a horizontal plate 92 fixedly connected below the mounting plate 91, a rotating rod 93 rotatably connected in the horizontal plate 92, a ratchet wheel 94 sleeved on the rotating rod 93, an extension rod fixedly connected on the rotating rod 93 and fixedly connected with the brass nut 6, the extension rod being fixedly connected on the rotating rod 93 and directly connected with the brass nut 6, the rotation of the rotating rod 93 being transmitted to the brass nut 6 through the extension rod, so as to realize the adjustment of the height, the design of the extension rod increasing the flexibility of the adjustment, avoiding the direct conflict between the screw 7 and the nut while providing stable support, and ensuring that the adjustment process is more smooth and accurate.

[0032] The limiting device 10 includes a connecting block 101 fixedly connected below the horizontal plate 92, a pull-back spring 102 fixedly connected on one side of the connecting block 101, a rotating plate 103 fixedly connected on one side of the pull-back spring 102, a rotating shaft 104 penetratingly arranged in the rotating plate 103, the rotating plate 103 being clamped outside the ratchet wheel 94, the rotating shaft 104 being penetratingly connected in the horizontal plate 92, the rotating plate 103 and the rotating shaft 104 being formed in a rotatable connection, the rotating plate 103 being kept in contact with the ratchet wheel 94 through the pull-back spring 102, so as to realize the limiting function of the ratchet wheel 94, the pull-back spring 102 providing a reset force, so that the rotating plate 103 can quickly return to the initial position after the adjustment is completed, and continuously maintain the restraining effect on the ratchet wheel 94, the cooperation between the rotating plate 103 and the ratchet wheel 94 not only avoiding the loosening of the brass nut 6 during the adjustment process, but also simplifying the limiting work of the operator, and improving the adjustment efficiency and stability.

[0033] In work, when the screw 7 is rotated, the ratchet wheel 94 limits the brass nut 6 through the clamping of the rotating plate 103, so as to prevent the brass nut 6 from following the screw 7 when the screw 7 is rotated clockwise, and when the height of the brass nut 6 needs to be adjusted, the screw 7 is only pulled to drive the brass nut 6 to move along the threaded shaft, and the flexible adjustment is realized through the free sliding of the extension rod, the design ensuring the stability of the brass nut 6 during the rotation of the screw 7, without the need for additional operation to limit it, and improving the convenience and accuracy of the operation.

[0034] The technical features of the above embodiments can be combined in any manner (as long as the combination of the technical features does not exist contradiction), in order to make the description simple, not all possible combinations of the technical features in the above embodiments are described; these embodiments which are not explicitly written should also be considered as the scope of the present application.

Claims

1. A vacuum pump rotor clamping fixture, comprising a driven shaft side base plate (1) and a drive shaft side base plate (2), characterized in that, A support plate (3) is fixedly connected between the driven shaft side base plate (1) and the driving shaft side base plate (2). A crossbeam plate (4) is fixedly connected to the support plate (3). A fixing plate (5) for adjusting the rotor clearance is fixedly connected to the crossbeam plate (4). A screw (7) for adjusting the height is provided in the fixing plate (5). A brass nut (6) is threaded on the lower side of the screw (7). A shaft stop (8) for clamping the rotor is fixedly connected to the top of the crossbeam plate (4). A fixing device (9) for applying support force is fixedly connected in the support plate (3). A limiting device (10) for limiting the rotation direction of the brass nut (6) is provided in the fixing device (9).

2. The vacuum pump rotor clamping fixture according to claim 1, characterized in that, The shaft stopper (8) is provided with a slot that matches the curvature of the outer surface of the rotor.

3. The vacuum pump rotor clamping fixture according to claim 1, characterized in that, The fixing plate (5) is fixedly connected to the crossbeam plate (4) by several bolts. The bolts are evenly distributed around the fixing plate (5). The brass nut (6) and the screw (7) are connected by a standard thread.

4. The vacuum pump rotor clamping fixture according to claim 1, characterized in that, The driven shaft side base plate (1) and the driving shaft side base plate (2) are respectively provided with reinforcing ribs, and the support plate (3) and the crossbeam plate (4) are fixed by welding.

5. The vacuum pump rotor clamping fixture according to claim 1, characterized in that, The fixing device (9) includes a mounting plate (91), which is fixedly connected to the support plate (3). A horizontal plate (92) is fixedly connected below the mounting plate (91). A rotating rod (93) is rotatably connected inside the horizontal plate (92), and a ratchet (94) is sleeved on the rotating rod (93).

6. The vacuum pump rotor clamping fixture according to claim 5, characterized in that, A telescopic rod is fixedly connected to the rotating rod (93), and the telescopic rod is fixedly connected to the brass nut (6).

7. The vacuum pump rotor clamping fixture according to claim 6, characterized in that, The limiting device (10) includes a connecting block (101), which is fixedly connected to the bottom of the horizontal plate (92). A pull-back spring (102) is fixedly connected to one side of the connecting block (101), and a rotating plate (103) is fixedly connected to one side of the pull-back spring (102). A rotating shaft (104) is provided through the rotating plate (103), and the rotating plate (103) is locked outside the ratchet (94).

8. The vacuum pump rotor clamping fixture according to claim 7, characterized in that, The rotating shaft (104) is connected through the horizontal plate (92), and the rotating plate (103) and the rotating shaft (104) form a rotating connection.

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