High-stability centrifugal machine motor rotor structure

Abstract

The utility model discloses a high-stability centrifuge motor rotor structure, which belongs to the technical field of centrifuge rotors and comprises a coupler and a connecting block in threaded connection with the coupler, a threaded column is arranged on the coupler, the connecting block is provided with an inner hole matched with the threaded column, and the top end of the threaded column is in threaded connection with a nut. The top end of the connecting block is fixedly connected with a limiting ring through a bolt, the limiting ring can limit axial displacement of the nut, the bolt is provided with an annular groove coaxial with the bolt, the connecting block is provided with a mounting hole matched with the bolt and a mounting groove communicated with the mounting hole, and a locking block is slidably mounted in the mounting groove. An elastic piece is fixedly connected between the locking block and the inner wall of the mounting groove, and the locking block can abut against or be separated from the annular groove by sliding the locking block so as to lock or unlock the axial displacement of the bolt. According to the utility model, the locking block is arranged to limit the axial displacement of the bolt and prevent the bolt from loosening in the high-speed rotation process of the rotor, so that the stability of the bolt in the rotation process of the rotor is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of centrifuge rotors, and in particular relates to a centrifuge motor rotor structure with high stability. Background Art

[0002] A centrifuge is a machine that uses centrifugal force to separate liquids from solid particles or the components of a liquid-liquid mixture. A centrifuge primarily consists of a rotor and a motor shaft. The rotor is secured to the motor shaft by a fixture. During centrifugal operation, the motor shaft rotates, driving the rotor at high speeds to separate the liquid components in the centrifuge tube.

[0003] Existing centrifuge rotors are typically secured to the motor shaft via bolts. For example, Chinese Patent Publication No. CN 215541837 U discloses a centrifuge rotor compatible with a variety of motor shafts. However, during high-speed rotor rotation, the bolts, secured solely by threaded engagement, can easily loosen, resulting in poor rotor rotation stability.

[0004] Therefore, it is necessary to propose a high-stability centrifuge motor rotor structure to solve the above problems. Utility Model Content

[0005] In view of this, the purpose of the present invention is to provide a high-stability centrifuge motor rotor structure to solve the problem in the prior art that during the high-speed rotation of the rotor, the bolts are easily loosened by only threaded engagement, thereby causing the stability of the rotor rotation to deteriorate.

[0006] In order to achieve the above-mentioned purpose, the present invention provides the following technical solutions:

[0007] The utility model provides a high-stability centrifuge motor rotor structure, comprising a coupling and a connecting block threadedly connected to the coupling, wherein the coupling is provided with a threaded column, the connecting block is provided with an inner hole matched with the threaded column, a nut is threadedly connected to the top of the threaded column, the top of the connecting block is fixedly connected to a limit ring by a bolt, the limit ring can limit the axial displacement of the nut, the bolt is provided with an annular groove coaxially arranged with the bolt, the connecting block is provided with a mounting hole matched with the bolt and a mounting groove connected to the mounting hole, a locking block is slidably installed in the mounting groove, an elastic member is fixedly connected between the locking block and the inner wall of the mounting groove, and sliding the locking block can make the locking block resist or disengage from the annular groove to lock or unlock the axial displacement of the bolt.

[0008] Furthermore, the connecting block is provided with a sliding hole connected to the mounting groove, the sliding hole and the mounting hole are staggered, and a sliding rod that can resist the locking block is provided in the sliding hole for limited sliding. Sliding the sliding rod can squeeze the locking block to make the locking block disengage from the annular groove.

[0009] Furthermore, the connecting block is provided with a groove coaxially arranged with the inner hole, the diameter of the groove is larger than the diameter of the inner hole, the nut is provided with a flange ring matching the groove, and the limiting ring presses the flange ring.

[0010] Furthermore, the height of the flange ring is smaller than the height of the groove, and an elastic pad is installed in the groove between the flange ring and the limiting ring.

[0011] Furthermore, the locking block is provided with a semicircular notch that cooperates with the annular groove.

[0012] Furthermore, the mounting groove is provided between the inner hole and the mounting hole, and the locking block can slide along the radial direction of the inner hole to lock or disengage the bolt.

[0013] The beneficial effects of the present invention are:

[0014] The utility model provides a locking block to limit the axial displacement of the bolt, thereby preventing the bolt from loosening during high-speed rotation of the rotor, thereby improving the stability of the bolt during the rotation of the rotor.

[0015] Other advantages, objectives, and features of the present invention will be described in the following description and will be apparent to those skilled in the art to some extent, or they may be taught by those skilled in the art from the practice of the present invention. The objectives and other advantages of the present invention may be realized and obtained through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to make the purpose, technical solution and beneficial effects of the present invention clearer, the present invention is described with the following drawings:

[0017] Figure 1 This is an exploded view of the installation of an embodiment of the utility model;

[0018] Figure 2 This is a cross-sectional view of the overall structure of an embodiment of the utility model;

[0019] Figure 3 For the embodiment of the utility model Figure 2 Enlarged view of the part A in the middle;

[0020] Figure 4 This is a structural diagram of a connecting block according to an embodiment of the present invention;

[0021] Figure 5 This is a schematic diagram of the bolt structure of an embodiment of the utility model;

[0022] Figure 6 This is a schematic diagram of the cooperation between the locking block and the sliding rod according to an embodiment of the present utility model.

[0023] The markings in the accompanying drawings are as follows: coupling 1, threaded column 101, connecting block 2, inner hole 201, groove 202, mounting hole 203, mounting groove 204, sliding hole 205, sliding rod 206, placement hole 207, nut 3, flange ring 301, bolt 4, annular groove 401, limiting ring 5, locking block 6, semicircular notch 601, elastic part 7, elastic pad 8. DETAILED DESCRIPTION

[0024] like Figures 1 to 6 As shown, the utility model provides a high-stability centrifuge motor rotor structure, including: a coupling 1 and a connecting block 2 threadedly connected to the coupling 1, the coupling 1 is provided with a threaded column 101, the connecting block 2 is provided with an inner hole 201 threadedly matched with the threaded column 101, the connecting block 2 is provided with a placement hole 207 for placing a centrifuge tube, the top of the threaded column is threadedly connected with a nut 3, the top of the connecting block 2 is fixedly connected to a limit ring 5 by a bolt 4, the limit ring 5 can limit the axial displacement of the nut 3, the bolt 4 is provided with an annular groove 401 coaxially arranged with the bolt 4, and the connecting block 2 is provided with a mounting hole 203 matched with the bolt 4. And a mounting groove 204 connected to the mounting hole 203, a locking block 6 that can slide into the mounting hole 203 is slidably installed in the mounting groove 204, an elastic member 7 is fixedly connected between the locking block 6 and the inner wall of the mounting groove 204, wherein the elastic member 7 includes but is not limited to a spring, the locking block 6 can extend into the annular groove 401 to limit the axial displacement of the bolt 4, and the connecting block 2 is provided with a sliding hole 205 connected to the mounting groove 204, the sliding hole 205 is staggered with the mounting hole 203, and a sliding rod 206 is provided in the sliding hole 205 for limiting sliding. Sliding the sliding rod 206 can squeeze the locking block 6 to make the locking block 6 disengage from the annular groove 401.

[0025] After the bolt 4 is screwed into the mounting hole 203, the slide rod 206 is slid in the opposite direction so that the locking block 6 slides toward the annular groove 401 under the action of the elastic member 7, so that the locking block 6 extends into the annular groove 401 to limit the axial displacement of the bolt 4.

[0026] In this solution, a locking block 6 is provided to limit the axial displacement of the bolt 4, thereby preventing the bolt 4 from loosening during high-speed rotation of the rotor, which would cause the rotor's rotation stability to deteriorate.

[0027] In one embodiment of the present invention, the connecting block 2 is provided with a groove 202 coaxially arranged with the inner hole 201, the diameter of the groove 202 is larger than the diameter of the inner hole 201, the nut 3 is provided with a flange ring 301 that cooperates with the groove, and the limiting ring 5 can press the flange ring 301.

[0028] In this solution, after the nut 3 is threadedly connected to the threaded column 101, the flange ring 301 is located on the bottom wall of the groove 202, and then the limiting ring 5 is installed so that the limiting ring 5 presses the flange ring 301, and then the limiting ring 5 is fixed to the connecting block 2 by the bolt 4.

[0029] In one embodiment of the present invention, the height of the flange ring 301 is smaller than the height of the groove 202 , and an elastic pad 8 is installed in the groove 202 between the flange ring 301 and the limiting ring 5 .

[0030] In this solution, by providing an elastic pad 8 , the limiting ring 5 can press the flange ring 301 after being installed on the connecting block 2 , so as to ensure the stability of the axis limiting of the nut 3 .

[0031] In one embodiment of the present invention, the locking block 6 is provided with a semicircular notch 601 that matches the annular groove 401 .

[0032] In this solution, a semicircular notch 601 is provided to ensure the contact area between the locking block 6 and the annular groove 401 , thereby improving the stability of the axial limit of the bolt 4 .

[0033] In one embodiment of the present invention, the mounting groove 204 is provided between the inner hole 201 and the mounting hole 203 , and the locking block 6 can slide along the radial direction of the inner hole 201 to lock or disengage the bolt 4 .

[0034] In this solution, the sliding direction of the locking block 6 is radial to the inner hole 201, so that during the rotation of the rotor, the locking block 6 is subjected to the centrifugal force and is more tightly attached to the annular groove 401, thereby further improving the stability of the axial limit of the bolt 4 during the rotation of the rotor.

[0035] Finally, it should be noted that the above preferred embodiments are only used to illustrate the technical solutions of the present invention and are not limiting. Although the present invention has been described in detail through the above preferred embodiments, those skilled in the art should understand that various changes can be made in form and details without departing from the scope defined by the claims of the present invention.

Claims

1. A high-stability centrifuge motor rotor structure, comprising a coupling and a connecting block threadedly connected to the coupling, characterized in that: The coupling is provided with a threaded column, the connecting block is provided with an inner hole that cooperates with the threaded column, the top of the threaded column is threadedly connected to a nut, the top of the connecting block is fixedly connected to a limit ring by a bolt, the limit ring can limit the axial displacement of the nut, the bolt is provided with an annular groove coaxially arranged with the bolt, the connecting block is provided with a mounting hole that cooperates with the bolt and a mounting groove connected to the mounting hole, a locking block is slidably installed in the mounting groove, and an elastic member is fixedly connected between the locking block and the inner wall of the mounting groove. Sliding the locking block can make the locking block resist or disengage from the annular groove to lock or unlock the axial displacement of the bolt.

2. The high-stability centrifuge motor rotor structure according to claim 1, characterized in that: The connecting block is provided with a sliding hole connected to the mounting groove, the sliding hole and the mounting hole are staggered, and a sliding rod that can resist the locking block is provided in the sliding hole for limiting sliding. Sliding the sliding rod can squeeze the locking block to make the locking block disengage from the annular groove.

3. The high-stability centrifuge motor rotor structure according to claim 2, characterized in that: The connecting block is provided with a groove coaxially arranged with the inner hole, the diameter of the groove is larger than the diameter of the inner hole, the nut is provided with a flange ring matched with the groove, and the limiting ring presses the flange ring.

4. The high-stability centrifuge motor rotor structure according to claim 3, characterized in that: The height of the flange ring is smaller than the height of the groove, and an elastic pad arranged between the flange ring and the limiting ring is installed in the groove.

5. The high-stability centrifuge motor rotor structure according to claim 4, characterized in that: The locking block is provided with a semicircular notch which matches the annular groove.

6. The high-stability centrifuge motor rotor structure according to claim 5, characterized in that: The mounting groove is arranged between the inner hole and the mounting hole, and the locking block can slide along the radial direction of the inner hole to lock or disengage the bolt.

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