Cell suspension subpackaging device

Abstract

The utility model provides a cell suspension subpackaging device, which relates to the technical field of subpackaging devices, and comprises a storage box, the bottom of the storage box is fixedly connected with a support frame, a connecting pipe and a two-way motor, and the two-way motor is fixedly connected with the support frame, the connecting pipe and the two-way motor. The output end of the bidirectional motor is fixedly connected with a rotating plate, a water inlet is formed in the top of the storage box, a limiting device is arranged at the top of the supporting frame, a fixing device is arranged at the top of the water inlet, the limiting device comprises a connecting frame, and the connecting frame is fixedly connected with the top of the supporting frame. When the limiting device is used, a test tube is manually placed in the connecting frame, then one side of the test tube is tightly attached to the arc face of an arc plate, then the arc plate is manually controlled to slide on the surface of a sliding rod, and then the arc plate slides to the side, away from the inner wall of one end of the supporting frame, of the sliding groove.

Description

Technical Field

[0001] This utility model relates to the field of dispensing device technology, and in particular to a cell suspension dispensing device. Background Technology

[0002] A dispensing device is a device used to dispense cell suspensions. When using the dispensing device, the cell suspension is placed inside the storage box, and then the test tubes are placed at the bottom of the storage box. The bidirectional motor is started, and the bidirectional motor drives the rotating plate to rotate, which allows the cell suspension to enter the test tubes through the connecting tubes, thus facilitating the dispensing of the cell suspension.

[0003] A search revealed the existing publicly available technical solution CN221917992U, which provides a cell suspension dispensing device. The dispensing device body includes a cell suspension tank, a dispensing mechanism, and a flow guiding mechanism. Supports are installed on both sides of the bottom of the cell suspension tank, and a base plate is installed at the bottom of the supports. A placement groove is provided on the surface of the base plate. The dispensing mechanism is installed at the bottom of the cell suspension tank, and a flow guiding mechanism is located in the middle of the dispensing mechanism. Quantitative pipes are installed at both ends of the bottom of the dispensing mechanism. This cell suspension dispensing device achieves the dispensing process by relying on the flow of the cell suspension itself through the bottom dispensing mechanism, reducing the impact on cell activity in the cell suspension and improving the quality of the dispensed product. The quantitative pipeline is used to quantitatively process each independently dispensed cell suspension, and the quantitative process is automatically completed during the discharge process, which improves the efficiency of dispensing and the uniformity between finished products. However, the inventors found in their daily work that the dispensing device still has at least the following problems: When using the dispensing device, the cell suspension is placed inside the storage box, and then the test tube is placed at the bottom of the storage box. The bidirectional motor is started, which drives the rotating plate to rotate, so that the cell suspension enters the test tube through the connecting tube. This facilitates the dispensing of the cell suspension. However, in actual use, when the test tube is manually placed on one side of the storage box, it is necessary to manually align the test tube with the discharge port of the connecting tube, which is relatively troublesome and will affect the dispensing efficiency to a certain extent. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a cell suspension dispensing device.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a cell suspension dispensing device, comprising a storage box, a support frame fixedly connected to the bottom of the storage box, a connecting pipe fixedly connected to the bottom of the storage box, a bidirectional motor fixedly connected to the bottom of the storage box, a rotating plate fixedly connected to the output end of the bidirectional motor, a water inlet provided at the top of the storage box, a limiting device provided at the top of the support frame, a fixing device provided at the top of the water inlet, the limiting device comprising a connecting frame, the connecting frame being fixedly connected to the top of the support frame, a sliding groove provided on one side of the connecting frame, a sliding rod fixedly connected to the inner wall of the sliding groove, an arc plate slidably connected to the inner wall of the sliding groove, and the sliding rod slidably penetrating and inserting into one side of the arc plate.

[0006] The effect achieved by the above components is as follows: when using the limiting device, the test tube is manually placed inside the connecting frame, so that one side of the test tube is in close contact with the arc surface of the arc plate. Then, the arc plate is manually controlled to slide on the surface of the sliding rod, and the arc plate is slid to the side of the slide groove away from the inner wall of the support frame. This can effectively place the test tube set on one side of the arc plate at the bottom of the water outlet of the connecting pipe.

[0007] Preferably, a first spring is sleeved on the surface of the sliding rod, one end of the first spring is fixedly connected to one side of the inner wall of the slide groove, the end of the first spring near the sliding rod is fixedly connected to one side of the arc plate, and a connecting rope is fixedly connected to one side of the arc plate, the connecting rope being slidably inserted through and inserted into one side of the slide groove.

[0008] The effect achieved by the above components is as follows: the first spring presses the arc plate towards the support frame, thereby making the arc plate slide on the surface of the sliding rod to the side of the slide groove away from the support frame. When you want to take out the test tube, you can manually pull the connecting rope away from the support frame. This will effectively pull the test tube set on one side of the arc plate out of the interior of the connecting frame.

[0009] Preferably, a first damping rod is uniformly fixedly connected to the top of the arc plate, a connecting block is fixedly connected to the top of the first damping rod, a second spring is sleeved on the surface of the first damping rod, the bottom of the second spring is fixedly connected to the top of the arc plate, the end of the second spring near the first damping rod is fixedly connected to the bottom of the connecting block, and a rubber sleeve is fixedly connected to the end of the connecting block away from the arc plate.

[0010] The effect achieved by the above components is as follows: after the test tube is placed on one side of the arc plate, the rubber sleeve is manually put on the side of the test tube away from the arc plate, and then the second spring pulls the connecting block closer to the top of the arc plate, which can effectively restrict the rubber sleeve on the surface of the test tube.

[0011] Preferably, a support plate is fixedly connected to the inner wall of the connecting frame, a second damping rod is fixedly connected to the side of the support plate near the slide groove, a movable plate is fixedly connected to the end of the second damping rod away from the support plate, a third spring is sleeved on the surface of the second damping rod, one end of the third spring is fixedly connected to one side of the support plate, and the end of the third spring near the second damping rod is fixedly connected to one side of the movable plate.

[0012] The effect achieved by the above components is as follows: when the first spring presses the arc plate close to the inside of the support frame, the arc plate presses the second spring, which in turn causes the second spring to contract. This can play a certain buffering role and prevent the test tube from being damaged by bumps to a certain extent.

[0013] Preferably, the fixing device includes a sealing plug, which is slidably connected to the inner wall of the water inlet.

[0014] The effect achieved by the above components is that when using the fixing device, the sealing plug is manually inserted into the inner wall of the water inlet, which can prevent the cell suspension from coming into contact with air and deteriorating to a certain extent.

[0015] Preferably, a first rubber ring is slidably connected to the inner wall of the sealing plug, a third damping rod is uniformly fixedly connected to one side of the inner wall of the sealing plug, the end of the third damping rod away from the sealing plug is fixedly connected to the inner wall of the first rubber ring, a fourth spring is sleeved on the surface of the third damping rod, one end of the fourth spring is fixedly connected to one side of the inner wall of the sealing plug, the end of the fourth spring near the third damping rod is fixedly connected to the inner wall of the first rubber ring, and a first rubber strip is fixedly connected to one side of the inner wall of the sealing plug, the end of the first rubber strip away from the inner wall of the sealing plug is fixedly connected to one side of the inner wall of the first rubber ring.

[0016] The effect achieved by the above components is as follows: after the sealing plug is inserted into the water inlet, the fourth spring presses the first rubber ring away from the sealing plug, thereby pressing the first rubber ring into the water inlet. The first rubber band can block the gap between the first rubber ring and the inner wall of the sealing plug, thus effectively confining the sealing plug inside the water inlet.

[0017] Preferably, a limiting frame is fixedly connected to the bottom of the sealing plug, a second rubber ring is slidably connected to the inner wall of the limiting frame, a fourth damping rod is uniformly fixedly connected to the top of the second rubber ring, the top of the fourth damping rod is fixedly connected to the top of the inner wall of the limiting frame, a fifth spring is sleeved on the surface of the fourth damping rod, one end of the fifth spring is fixedly connected to the top of the inner wall of the limiting frame, the end of the fifth spring near the fourth damping rod is fixedly connected to the top of the second rubber ring, the second rubber ring is slidably inserted into the top of the storage box, a second rubber strip is fixedly connected to the top of the inner wall of the limiting frame, and the end of the second rubber strip away from the limiting frame is fixedly connected to the top of the second rubber ring.

[0018] The effect achieved by the above components is as follows: the second rubber ring is squeezed away from the limiting frame by the fifth spring, so that the second rubber ring is inserted into the top of the storage box, and the gap between the second rubber ring and the limiting frame is blocked by the second rubber strip, which can play a certain sealing role.

[0019] Preferably, the top of the sealing plug is uniformly and fixedly connected with a locking block, and a locking rod is provided between the two locking blocks. The bottom of the locking rod is rotatably inserted into the top of the storage box.

[0020] The effect achieved by the above components is as follows: the sealing plug is slid into the inside of the water inlet, and then the locking rod is manually controlled to rotate, so that the top of the locking rod is positioned in the middle of the two locking blocks, which can effectively restrict the sealing plug inside the water inlet.

[0021] In this utility model, by setting a limiting device, when using the limiting device, the test tube is manually placed inside the connecting frame, so that one side of the test tube is tightly attached to the arc surface of the arc plate. Then, the arc plate is manually controlled to slide on the surface of the sliding rod, and then the arc plate is slid to the side of the sliding groove away from the inner wall of the support frame. In this way, the test tube set on one side of the arc plate can be well set at the bottom of the water outlet of the connecting pipe. Attached Figure Description

[0022] Figure 1 This invention provides a three-dimensional structural schematic diagram of a cell suspension dispensing device;

[0023] Figure 2 A three-dimensional structural diagram of the novel arc plate proposed in this utility model is provided.

[0024] Figure 3 A three-dimensional structural diagram of the novel locking rod proposed in this utility model;

[0025] Figure 4 A three-dimensional structural diagram of the novel sealing plug proposed in this utility model is provided.

[0026] Legend: 1. Storage box; 2. Support frame; 3. Connecting pipe; 4. Bidirectional motor; 5. Rotating plate; 6. Water inlet; 7. Limiting device; 701. Connecting frame; 702. Slide groove; 703. Arc plate; 704. Sliding rod; 705. First spring; 706. Connecting rope; 707. Support plate; 708. Second damping rod; 709. Third spring; 710. Moving plate; 711. First damping rod; 712. Second spring; 713. Connecting block; 714. Rubber sleeve; 8. Fixing device; 801. Sealing plug; 802. First rubber ring; 803. Third damping rod; 804. Fourth spring; 805. First rubber belt; 806. Limiting frame; 807. Second rubber ring; 808. Fourth damping rod; 809. Fifth spring; 810. Second rubber belt; 811. Locking rod; 812. Locking block. Detailed Implementation

[0027] Example 1, such as Figure 1-4 As shown, a cell suspension dispensing device includes a support frame 2 fixedly connected to the bottom of a storage tank 1, a connecting pipe 3 fixedly connected to the bottom of the storage tank 1, a bidirectional motor 4 fixedly connected to the bottom of the storage tank 1, a rotating plate 5 fixedly connected to the output end of the bidirectional motor 4, a water inlet 6 provided at the top of the storage tank 1, a limit device 7 provided at the top of the support frame 2, and a fixing device 8 provided at the top of the water inlet 6. When using the dispensing device, the cell suspension is placed inside the storage tank 1, and then a test tube is placed at the bottom of the storage tank 1. The bidirectional motor 4 is started, and the rotating plate 5 is rotated by the bidirectional motor 4, thereby allowing the cell suspension to enter the interior of the test tube through the connecting pipe 3, which facilitates the dispensing of the cell suspension.

[0028] Reference Figure 2 and Figure 3The limiting device 7 includes a connecting frame 701, which is fixedly connected to the top of the support frame 2. A groove 702 is provided on one side of the connecting frame 701. A sliding rod 704 is fixedly connected to the inner wall of the groove 702. An arc plate 703 is slidably connected to the inner wall of the groove 702. The sliding rod 704 is slidably inserted through one side of the arc plate 703. When using the limiting device 7, the test tube is manually placed inside the connecting frame 701, so that one side of the test tube is tightly attached to the arc surface of the arc plate 703. Then, the arc plate 703 is manually controlled to slide on the surface of the sliding rod 704, so that the arc plate 703 slides to the side of the groove 702 away from the inner wall of the support frame 2. This can effectively position the test tube on one side of the arc plate 703. At the bottom of the outlet of the connecting pipe 3, a first spring 705 is fitted onto the surface of the sliding rod 704. One end of the first spring 705 is fixedly connected to one side of the inner wall of the slide groove 702, and the end of the first spring 705 near the sliding rod 704 is fixedly connected to one side of the arc plate 703. A connecting rope 706 is fixedly connected to one side of the arc plate 703. The connecting rope 706 slides through and is inserted into one side of the slide groove 702. The first spring 705 presses the arc plate 703 towards the support frame 2, thus allowing the arc plate 703 to slide on the surface of the sliding rod 704 to the side of the slide groove 702 away from the support frame 2. To remove the test tube, manually pull the connecting rope 706 away from the support frame 2. This will allow the test tube to be properly removed from the arc plate 703. 3. The test tube on one side is pulled out of the connecting frame 701. A first damping rod 711 is evenly fixedly connected to the top of the arc plate 703. A connecting block 713 is fixedly connected to the top of the first damping rod 711. A second spring 712 is sleeved on the surface of the first damping rod 711. The bottom of the second spring 712 is fixedly connected to the top of the arc plate 703. The end of the second spring 712 near the first damping rod 711 is fixedly connected to the bottom of the connecting block 713. A rubber sleeve 714 is fixedly connected to the end of the connecting block 713 away from the arc plate 703. After the test tube is placed on one side of the arc plate 703, the rubber sleeve 714 is manually put on the side of the test tube away from the arc plate 703, and then the second spring 712 pulls the connecting block 713 towards the top of the arc plate 703. 13. This effectively confines the rubber sleeve 714 to the surface of the test tube. A support plate 707 is fixedly connected to the inner wall of the connecting frame 701. A second damping rod 708 is fixedly connected to the side of the support plate 707 near the slide groove 702. A moving plate 710 is fixedly connected to the end of the second damping rod 708 away from the support plate 707. A third spring 709 is sleeved on the surface of the second damping rod 708. One end of the third spring 709 is fixedly connected to one side of the support plate 707, and the end of the third spring 709 near the second damping rod 708 is fixedly connected to one side of the moving plate 710. When the first spring 705 presses the arc plate 703 closer to the inside of the support frame 2, the arc plate 703 presses the second spring 712, thereby causing the second spring 712 to contract.This provides some cushioning, preventing the test tubes from being damaged by impacts.

[0029] Reference Figure 4The fixing device 8 includes a sealing plug 801, which is slidably connected to the inner wall of the inlet 6. When using the fixing device 8, the sealing plug 801 is manually inserted into the inner wall of the inlet 6, which can prevent the cell suspension from contacting air and deteriorating to a certain extent. A first rubber ring 802 is slidably connected to the inner wall of the sealing plug 801. A third damping rod 803 is uniformly fixedly connected to one side of the inner wall of the sealing plug 801. The end of the third damping rod 803 away from the sealing plug 801 is fixedly connected to the inner wall of the first rubber ring 802. A fourth spring 804 is sleeved on the surface of the third damping rod 803. One end of the fourth spring 804 is fixedly connected to one side of the inner wall of the sealing plug 801. The end of the fourth spring 804 near the third damping rod 803 is fixedly connected to the sealing plug 801. The inner wall of the first rubber ring 802 is fixedly connected, and the inner wall of the sealing plug 801 is fixedly connected to one side of the first rubber strip 805. The end of the first rubber strip 805 away from the inner wall of the sealing plug 801 is fixedly connected to one side of the inner wall of the first rubber ring 802. After the sealing plug 801 is inserted into the water inlet 6, the fourth spring 804 presses the first rubber ring 802 away from the sealing plug 801, thereby pressing the first rubber ring 802 into the water inlet 6. The first rubber strip 805 can block the gap between the first rubber ring 802 and the inner wall of the sealing plug 801, thus effectively restricting the sealing plug 801 into the water inlet 6. The bottom of the sealing plug 801 is fixedly connected to a limiting frame 806, and the inner wall of the limiting frame 806 slides. A second rubber ring 807 is connected, and a fourth damping rod 808 is uniformly fixedly connected to the top of the second rubber ring 807. The top of the fourth damping rod 808 is fixedly connected to the top of the inner wall of the limiting frame 806. A fifth spring 809 is sleeved on the surface of the fourth damping rod 808. One end of the fifth spring 809 is fixedly connected to the top of the inner wall of the limiting frame 806. The end of the fifth spring 809 near the fourth damping rod 808 is fixedly connected to the top of the second rubber ring 807. The second rubber ring 807 is slidably inserted into the top of the storage box 1. A second rubber band 810 is fixedly connected to the top of the inner wall of the limiting frame 806. The end of the second rubber band 810 away from the limiting frame 806 is fixedly connected to the top of the second rubber ring 807, and connected by the fifth spring 809. The second rubber ring 807 is squeezed away from the limiting frame 806, thereby inserting the second rubber ring 807 into the top of the storage box 1. The gap between the second rubber ring 807 and the limiting frame 806 is blocked by the second rubber strip 810, which can play a certain sealing role. The top of the sealing plug 801 is evenly fixedly connected with the locking block 812, and the locking rod 811 is set in the middle of the two locking blocks 812. The bottom of the locking rod 811 is rotatably inserted into the top of the storage box 1. The sealing plug 801 is slid into the inside of the water inlet 6, and then the locking rod 811 is manually controlled to rotate, so that the top of the locking rod 811 is set in the middle of the two locking blocks 812. This can effectively restrict the sealing plug 801 inside the water inlet 6.

[0030] Working principle: When using the dispensing device, the cell suspension is placed inside the storage box 1, and the test tube is placed at the bottom of the storage box 1. The bidirectional motor 4 is started, which drives the rotating plate 5 to rotate, allowing the cell suspension to enter the test tube through the connecting tube 3. This facilitates the dispensing of the cell suspension. When using the limiting device 7, the test tube is manually placed inside the connecting frame 701. After the test tube is placed on one side of the arc plate 703, the rubber sleeve 714 is manually placed on the side of the test tube away from the arc plate 703. Then, the second spring 712 pulls the connecting block 713 towards the top of the arc plate 703, which can effectively hold the rubber sleeve 714 in place. 4. The test tube is confined to its surface, causing one side of the test tube to adhere tightly to the arc surface of the arc plate 703. The first spring 705 presses the arc plate 703 towards the support frame 2, allowing it to slide smoothly along the surface of the sliding rod 704 to the side of the slide groove 702 away from the support frame 2. When the first spring 705 presses the arc plate 703 closer to the inside of the support frame 2, the arc plate 703 presses the second spring 712, causing the second spring 712 to contract. This provides a buffering effect, preventing the test tube from being damaged by impacts. The test tube, positioned on one side of the arc plate 703, is placed at the bottom of the outlet of the connecting pipe 3. To remove the test tube, manually pull the connecting rope 706 away from the support frame 2. This effectively pulls the test tube from the arc plate 703 into the connecting frame 701. When using the fixing device 8, manually insert the sealing plug 801 into the inner wall of the inlet 6. After inserting the sealing plug 801 into the inlet 6, the fourth spring 804 presses the first rubber ring 802 away from the sealing plug 801, thus pressing the first rubber ring 802 into the inlet 6. The first rubber band 805 can block the first rubber ring 802 and the sealing plug 801. The gaps in the wall effectively confine the sealing plug 801 inside the inlet 6. The fifth spring 809 presses the second rubber ring 807 away from the limiting frame 806, causing the second rubber ring 807 to be inserted into the top of the storage tank 1. The second rubber band 810 blocks the gap between the second rubber ring 807 and the limiting frame 806, thus providing a certain degree of sealing. Then, the locking rod 811 is manually rotated, so that the top of the locking rod 811 is positioned between the two locking blocks 812. This effectively confines the sealing plug 801 inside the inlet 6, thus preventing the cell suspension from contacting air and deteriorating to a certain extent.

[0031] It should be noted that all damping rods in this case are telescopic dampers, which can absorb energy during the extension and retraction process.

Claims

1. A device for dispensing a cell suspension, comprising a storage tank (1), characterized in that: The storage box (1) is fixedly connected to a support frame (2) at the bottom, and a connecting pipe (3) is fixedly connected to the bottom of the storage box (1). A bidirectional motor (4) is fixedly connected to the bottom of the storage box (1), and a rotating plate (5) is fixedly connected to the output end of the bidirectional motor (4). A water inlet (6) is provided at the top of the storage box (1). A limiting device (7) is provided at the top of the support frame (2), and a fixing device (8) is provided at the top of the water inlet (6). The limiting device (7) includes a connecting frame (701). The connecting frame (701) and the top of the support frame (2) are fixedly connected. A sliding groove (702) is provided on one side of the connecting frame (701). A sliding rod (704) is fixedly connected to the inner wall of the sliding groove (702). An arc plate (703) is slidably connected to the inner wall of the sliding groove (702). The sliding rod (704) is slidably inserted through and inserted into one side of the arc plate (703).

2. The cell suspension dispensing device according to claim 1, characterized in that: A first spring (705) is sleeved on the surface of the sliding rod (704). One end of the first spring (705) is fixedly connected to one side of the inner wall of the slide groove (702). The end of the first spring (705) near the sliding rod (704) is fixedly connected to one side of the arc plate (703). A connecting rope (706) is fixedly connected to one side of the arc plate (703). The connecting rope (706) slides through and is inserted into one side of the slide groove (702).

3. The cell suspension dispensing device according to claim 1, characterized in that: A first damping rod (711) is uniformly fixedly connected to the top of the arc plate (703). A connecting block (713) is fixedly connected to the top of the first damping rod (711). A second spring (712) is sleeved on the surface of the first damping rod (711). The bottom of the second spring (712) is fixedly connected to the top of the arc plate (703). The end of the second spring (712) near the first damping rod (711) is fixedly connected to the bottom of the connecting block (713). A rubber sleeve (714) is fixedly connected to the end of the connecting block (713) away from the arc plate (703).

4. The cell suspension dispensing device according to claim 1, characterized in that: A support plate (707) is fixedly connected to the inner wall of the connecting frame (701). A second damping rod (708) is fixedly connected to the side of the support plate (707) near the slide groove (702). A moving plate (710) is fixedly connected to the end of the second damping rod (708) away from the support plate (707). A third spring (709) is sleeved on the surface of the second damping rod (708). One end of the third spring (709) is fixedly connected to one side of the support plate (707). The end of the third spring (709) near the second damping rod (708) is fixedly connected to one side of the moving plate (710).

5. The cell suspension dispensing device according to claim 1, characterized in that: The fixing device (8) includes a sealing plug (801), which is slidably connected to the inner wall of the water inlet (6).

6. The cell suspension dispensing device according to claim 5, characterized in that: The inner wall of the sealing plug (801) is slidably connected to a first rubber ring (802). A third damping rod (803) is uniformly fixedly connected to one side of the inner wall of the sealing plug (801). The end of the third damping rod (803) away from the sealing plug (801) is fixedly connected to the inner wall of the first rubber ring (802). A fourth spring (804) is sleeved on the surface of the third damping rod (803). One end of the fourth spring (804) is fixedly connected to one side of the inner wall of the sealing plug (801). The end of the fourth spring (804) near the third damping rod (803) is fixedly connected to the inner wall of the first rubber ring (802). A first rubber band (805) is fixedly connected to one side of the inner wall of the sealing plug (801). The end of the first rubber band (805) away from the inner wall of the sealing plug (801) is fixedly connected to one side of the inner wall of the first rubber ring (802).

7. A cell suspension dispensing device according to claim 5, characterized in that: The bottom of the sealing plug (801) is fixedly connected to a limiting frame (806). A second rubber ring (807) is slidably connected to the inner wall of the limiting frame (806). A fourth damping rod (808) is uniformly fixedly connected to the top of the second rubber ring (807). The top of the fourth damping rod (808) is fixedly connected to the top of the inner wall of the limiting frame (806). A fifth spring (809) is sleeved on the surface of the fourth damping rod (808). One end of the fifth spring (809) The fifth spring (809) is fixedly connected to the top of the inner wall of the limiting frame (806), and the end of the fifth spring (809) near the fourth damping rod (808) is fixedly connected to the top of the second rubber ring (807). The second rubber ring (807) is slidably inserted into the top of the storage box (1). The top of the inner wall of the limiting frame (806) is fixedly connected to the second rubber band (810), and the end of the second rubber band (810) away from the limiting frame (806) is fixedly connected to the top of the second rubber ring (807).

8. A cell suspension dispensing device according to claim 5, characterized in that: The top of the sealing plug (801) is uniformly fixedly connected with a locking block (812), and a locking rod (811) is provided between the two locking blocks (812). The bottom of the locking rod (811) is rotatably inserted into the top of the storage box (1).

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