Intelligent infusion reminding equipment for infusion bag

Abstract

The invention discloses intelligent infusion reminding equipment for an infusion bag, and relates to the technical field of medical instruments. The problem that when a small amount of liquid is left in an infusion bag, surrounding personnel cannot be reminded, and relatively sufficient reaction time is provided for medical staff and nursing staff is solved. The device specifically comprises a support, a plurality of slots are formed in the outer wall of one side of the support, supporting rods are slidably connected to the inner walls of the slots, a set of shielding frames are fixed to the outer walls of one sides of the supporting rods, air injection mechanisms are arranged on the outer walls of the tops of the shielding frames, and guide through grooves are formed in the outer walls of one sides of the shielding frames; a medical worker can insert a blocking rod into a second positioning hole with the corresponding height in one side of an L-shaped plate according to the amount of liquid medicine in an infusion bag, so that the amount of the remaining liquid medicine in the infusion bag when the blocking rod is in contact with a collision switch is adjusted; medical staff and nursing staff can flexibly adjust the reaction time before liquid medicine on the inner wall of the infusion bag is completely infused, and the use flexibility of the reminding equipment is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and in particular to an intelligent reminder device for infusion of an infusion bag. Background Art

[0002] Infusion is a common treatment method in modern medicine. Since infusion takes longer than injection, patients often need to be accompanied by someone during infusion so as to remind medical staff to replace the infusion equipment in time. In addition, each nurse needs to take care of several patients at the same time and deal with some emergencies. There is simply not enough time and experience to pay attention to the infusion progress of each patient. Therefore, researching an infusion device that is independent of human factors and can sound an alarm when the infusion is about to be completed is very helpful not only to the patient himself but also to his accompanying personnel.

[0003] After searching, the patent application number CN201821612862.X discloses an infusion bag infusion reminder, including a device body, and the device body includes a first switch, a second switch, a buzzer, an indicator light, a control mechanism and a clamping mechanism. However, since the above technical solution uses an infrared transmitter to monitor whether there is liquid flowing in the infusion tube, there is still a problem that the liquid volume in the infusion bag cannot be monitored in real time, so as to remind the surrounding people when there is still a little liquid left in the infusion bag, give medical staff and caregivers relatively sufficient reaction time, and improve the efficiency of infusion management. Summary of the invention

[0004] The purpose of the present invention is to solve the shortcomings of the prior art and to propose a ceramic coating liquid for an infusion bag infusion intelligent reminder device and a preparation method thereof.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] An infusion bag infusion intelligent reminder device comprises a bracket, a plurality of slots are opened on the outer wall of one side of the bracket, a support rod is slidably connected to the inner wall of the slot, a group of shielding frames are fixed to the outer wall of one side of the support rod, an air jet mechanism is arranged on the outer wall of the top of the shielding frame, a guide slot is opened on the outer wall of one side of the shielding frame, a slider is slidably connected to the shielding frame and the inner wall of the guide slot, a group of mounting blocks are slidably connected to the outer wall of one side of the slider, a rotating rod is rotatably connected to one side of the mounting block, a friction sleeve is fixed to the outer wall of the rotating rod, and an elastic telescopic rod is fixed to the outer wall of one side of the support rod;

[0007] An L-shaped plate is fixed on the outer wall of the top of the mounting block. The L-shaped plate is slidably connected to the inner wall of the guide groove. A limiting mechanism is arranged on the L-shaped plate and the outer wall of the support rod.

[0008] Preferably, the outer wall of the telescopic end of the elastic telescopic rod is supported with a hanging hole, the outer wall at the bottom of the hanging hole is provided with an infusion bag, and the outer wall at the bottom of the infusion bag is provided with an infusion port.

[0009] Further: the limiting mechanism includes a gear rod, a second positioning hole, a collision switch and a connecting block, multiple second positioning holes are arranged on the outer wall of one side of the L-shaped plate, the gear rod is inserted into the inner wall of the second positioning hole, the connecting block is fixed on the outer wall of one side of the gear rod, and the collision switch is fixed on the top outer wall of the support rod.

[0010] Further preferably, a buzzer, an indicator light and a control panel are fixed to an outer wall of one side of the bracket, and the collision switch, the buzzer and the indicator light are electrically connected to the control panel respectively.

[0011] As a preferred embodiment of the present invention, the jet mechanism comprises an air guide pipe, an adjustable air valve, an air guide port and an air inlet.

[0012] As a further preferred embodiment of the present invention: a pressure sensor is fixed to the outer wall of the top of the slider, and the pressure sensor is electrically connected to the control panel.

[0013] As a further solution of the present invention: an elastic stopper is fixed to the outer wall of one side of the mounting block, a spring is fixed to the outer wall of one side of the mounting block, a stopper is fixed to the outer wall of one side of the spring, and the stopper is fixed to the outer wall of one side of the slider.

[0014] On the basis of the above-mentioned solution: a plurality of first positioning holes are opened on the outer wall of one side of the support rod, a handle is fixed on the outer wall of one side of the support rod, and a plurality of insertion holes are opened on the outer wall of one side of the bracket.

[0015] On the basis of the above scheme: an infusion port is arranged on the outer wall of the bottom of the infusion bag, an elastic clamp is sleeved on the outer wall of the infusion port, a pull rod is fixed on the outer wall of the elastic clamp, moving blocks are fixed at both ends of the pull rod, the moving blocks are slidably connected to the inner wall of the shielding frame, and a counterweight block is fixed on the outer wall of the bottom of the moving block.

[0016] The beneficial effects of the present invention are:

[0017] 1. Medical staff can insert the lever into the second positioning hole at a corresponding height on one side of the L-shaped plate according to the amount of liquid medicine inside the infusion bag, thereby adjusting the amount of liquid medicine remaining inside the infusion bag when the lever contacts the collision switch, allowing medical staff and caregivers to flexibly adjust the reaction time before the liquid medicine on the inner wall of the infusion bag is finished, thereby improving the flexibility of the reminder device when used.

[0018] 2. As the liquid inside the infusion bag gradually decreases, the infusion bag will shrink continuously from the top. At this time, the top of the infusion bag will not be able to effectively support the friction sleeve after shrinkage. At this time, the friction sleeve as a whole will drive the slider to slide downward inside the shielding frame under the action of overall gravity, so that the rotating rod as a whole can move downward continuously with the degree of contraction of the top of the infusion bag. When the mounting block moves downward, it will drive the L-shaped plate of the outer wall to move downward continuously, thereby blocking the guide grooves on both sides of the contraction area at the top of the infusion bag, so that the hot air will only be ejected through the guide grooves on both sides of the part where the friction sleeve is supported by liquid on the lower side of the infusion bag, thereby stably and accurately heating the liquid inside the infusion bag.

[0019] 3. Medical staff connect the external hot air blower to the jet mechanism on the outer wall of the shielding frame through a pipeline, so that the jet mechanism sprays hot air into the inside of the shielding frame through the top of the shielding frame. After the hot air enters the inside of the shielding frame, it passes through the gap between the two mounting blocks and enters the bottom of the slider, and then sprays toward the outer wall of the infusion bag through the guide groove on one side of the shielding frame that is not blocked by one side of the L-shaped plate, thereby heating the liquid inside the infusion bag.

[0020] 4. The hot air blower sprays hot air into the shielding frame through the air inlet through the air guide port and the air guide pipe. The flow rate of hot air entering the shielding frame can be adjusted by the adjustable air valve, thereby adjusting the air pressure of the hot air blown on the top of the slider, so that the friction sleeve can squeeze the infusion bag with different pressures, thereby adjusting the flow rate of infusion from the infusion bag to the outside, and further improving the overall functionality of the reminder device.

[0021] 5. After hanging the hanging hole on the top of the infusion bag on the elastic telescopic rod, the infusion port at the bottom of the infusion bag can be clamped by the elastic clamp, so that the infusion bag can be stretched as a whole through the pull rod and the moving block, so that the infusion bag as a whole can be more stretched during infusion, so that the liquid inside the infusion bag can be stably transported outward in cooperation with the friction sleeve. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic diagram of the main structure of an infusion bag infusion intelligent reminder device proposed by the present invention;

[0023] Figure 2 This is a schematic diagram of the support rod structure of an infusion bag infusion intelligent reminder device proposed by the present invention;

[0024] Figure 3 This is a schematic diagram of the structure of an elastic telescopic rod of an infusion bag infusion intelligent reminder device proposed by the present invention;

[0025] Figure 4 This is a schematic diagram of the interior of a shielding frame of an infusion bag infusion intelligent reminder device proposed by the present invention;

[0026] Figure 5This is a schematic diagram of the structure of a slider of an infusion bag infusion intelligent reminder device proposed by the present invention;

[0027] Figure 6 A schematic diagram of a pull rod structure of an infusion bag infusion intelligent reminder device proposed by the present invention;

[0028] Figure 7 This is a side view structural diagram of an infusion bag infusion intelligent reminder device proposed by the present invention;

[0029] Figure 8 The present invention provides a circuit flow diagram of an infusion bag infusion intelligent reminder device.

[0030] In the figure: 1 bracket, 2 control panel, 3 indicator light, 4 slot, 5 jack, 6 first positioning hole, 7 handle, 8 support rod, 9 buzzer, 10 L-shaped plate, 11 air guide tube, 12 adjustable air valve, 13 friction sleeve, 14 shielding frame, 15 infusion bag, 16 gear lever, 17 second positioning hole, 18 connecting block, 19 collision switch, 20 infusion port, 21 pull rod, 22 air guide port, 23 hanging hole, 24 guide groove, 25 elastic telescopic rod, 26 rotating rod, 27 mounting block, 28 spring, 29 slider, 30 pressure sensor, 31 baffle, 32 elastic block, 33 elastic chuck, 34 counterweight block, 35 moving block, 36 air inlet. DETAILED DESCRIPTION

[0031] The technical solution of the present invention is further described in detail below in conjunction with specific implementation methods.

[0032] Embodiment 1:

[0033] An infusion bag infusion intelligent reminder device comprises a bracket 1, wherein a plurality of slots 4 are provided on one side of the outer wall of the bracket 1, a support rod 8 is slidably connected to the inner wall of the slot 4, a group of shielding frames 14 are fixed to the outer wall of one side of the support rod 8, an air jet mechanism is arranged on the outer wall of the top of the shielding frame 14, a guide slot 24 is provided on the outer wall of one side of the shielding frame 14, a slider 29 is slidably connected to the inner wall of the shielding frame 14 and the guide slot 24, a group of mounting blocks 27 are slidably connected to the outer wall of one side of the slider 29, a rotating rod 26 is rotatably connected to one side of the mounting block 27, a friction sleeve 13 is fixed to the outer wall of the rotating rod 26, and an elastic telescopic rod 25 is fixed to the outer wall of one side of the support rod 8;

[0034] An L-shaped plate 10 is fixed to the top outer wall of the mounting block 27, and the L-shaped plate 10 is slidably connected to the inner wall of the guide slot 24. A limiting mechanism is provided on the outer wall of the L-shaped plate 10 and the support rod 8;

[0035] The outer wall of the telescopic end of the elastic telescopic rod 25 supports a hanging hole 23, the outer wall at the bottom of the hanging hole 23 is provided with an infusion bag 15, and the outer wall at the bottom of the infusion bag 15 is provided with an infusion port 20;

[0036] The limiting mechanism includes a shift lever 16, a second positioning hole 17, a collision switch 19 and a connecting block 18. The plurality of second positioning holes 17 are provided on an outer wall of one side of the L-shaped plate 10. The shift lever 16 is plugged into the inner wall of the second positioning hole 17. The connecting block 18 is fixed to an outer wall of one side of the shift lever 16. The collision switch 19 is fixed to the outer wall of the top of the support rod 8.

[0037] A buzzer 9, an indicator light 3 and a control panel 2 are fixed to an outer wall of one side of the bracket 1, and the collision switch 19, the buzzer 9 and the indicator light 3 are electrically connected to the control panel 2 respectively.

[0038] The medical staff first pushes the telescopic end of the elastic telescopic rod 25 to move inward, then inserts the hanging hole 23 at the top of the infusion bag 15 between the two friction sleeves 13, and then loosens the telescopic end of the elastic telescopic rod 25. At this time, the telescopic end of the elastic telescopic rod 25 will pass through the hanging hole 23 when it pops outward, so that the infusion bag 15 is hung on the bottom of the friction sleeve 13 as a whole through the elastic telescopic rod 25 and the hanging hole 23. Then, the medical staff connects the external hot air blower with the jet mechanism on the outer wall of the shielding frame 14 through the pipeline, so that the jet mechanism sprays hot air into the inside of the shielding frame 14 through the top of the shielding frame 14. After entering the inside of the shielding frame 14, the hot air passes through the gap between the two mounting blocks 27 and enters the bottom of the slider 29, and then sprays toward the outer wall of the infusion bag 15 through the guide groove 24 on one side of the shielding frame 14 that is not blocked by one side of the L-shaped plate 10, thereby heating the liquid inside the infusion bag 15;

[0039] As the liquid inside the infusion bag 15 gradually decreases, the infusion bag 15 will shrink downward from the top. At this time, the top of the infusion bag 15 will not be able to effectively support the friction sleeve 13 after shrinking. At this time, the friction sleeve 13 as a whole will drive the slider 29 to slide downward inside the shielding frame 14 under the action of the overall gravity, so that the rotating rod 26 as a whole can move downward continuously with the degree of shrinkage of the top of the infusion bag 15. When the mounting block 27 moves downward, it will drive the L-shaped plate 10 of the outer wall to move downward continuously, thereby shielding the guide grooves 24 on both sides of the shrinkage area at the top of the infusion bag 15, so that the hot air will only be ejected through the guide grooves 24 on both sides of the part where the liquid on the lower side of the infusion bag 15 supports the friction sleeve 13, thereby stably and accurately heating the liquid inside the infusion bag 15;

[0040] When the friction sleeve 13 follows the shrinking infusion bag 15 and descends to the corresponding height, the gear lever 16 inserted in the corresponding second positioning hole 17 will move to the top of the collision switch 19. The collision switch 19 will send an electrical signal to the control panel 2 after being hit. At this time, the control panel 2 will control the indicator light 3 to light up, and at the same time control the buzzer 9 to sound, reminding the surrounding caregivers and medical staff that the liquid medicine in the patient's infusion bag 15 is about to be finished. The gear lever 16 can be inserted into the second positioning hole 17 at a corresponding height on one side of the L-shaped plate 10 according to the amount of liquid medicine in the infusion bag 15, so as to adjust the amount of liquid medicine remaining in the infusion bag 15 when the gear lever 16 and the collision switch 19 are in contact, so that medical staff and caregivers can flexibly adjust the reaction time before the liquid medicine on the inner wall of the infusion bag 15 is finished, thereby improving the flexibility of the reminder device when used.

[0041] like Figure 1-5 As shown, the jet mechanism includes an air guide tube 11, an adjustable air valve 12, an air guide port 22 and an air inlet 36; the air inlet 36 and the air guide port 22 are respectively arranged on the outer wall of one side of the bracket 1, and the air inlet 36 and the air guide port 22 are connected through an air guide pipeline. The air guide tube 11 is inserted into the top outer wall of the shielding frame 14, and the adjustable air valve 12 is arranged on the outer wall of the air guide tube 11, and the air guide tube 11 is connected to the air guide port 22 through the air guide pipeline; the hot air blower sprays the hot air into the shielding frame 14 through the air inlet 36 through the air guide port 22 and the air guide tube 11, and the flow rate of the hot air entering the shielding frame 14 can be adjusted by the adjustable air valve 12, thereby adjusting the air pressure of the hot air blown on the top of the slider 29, so that the friction sleeve 13 can squeeze the infusion bag 15 with different pressures, thereby adjusting the flow rate of the infusion bag 15 to infuse outward, and further improving the overall functionality of the reminder device.

[0042] like Figure 4-5 As shown, a pressure sensor 30 is fixed to the top outer wall of the slider 29, and the pressure sensor 30 is electrically connected to the control panel 2;

[0043] An elastic stopper 32 is fixed to the outer wall of one side of the mounting block 27, a spring 28 is fixed to the outer wall of one side of the mounting block 27, a stopper 31 is fixed to the outer wall of one side of the spring 28, and the stopper 31 is fixed to the outer wall of one side of the slider 29; the spring 28 can support and guide the mounting block 27 by its own elastic force, and at the same time squeeze the rotating rod 26 by its own elastic force, so that the friction sleeve 13 on the outer wall of the rotating rod 26 can be tightly attached to one side of the infusion bag 15, and at the same time, the hot air blown to the top of the slider 29 can be blown into the bottom of the slider 29 through the gap between the elastic stopper 32 and the mounting block 27, and the pressure sensor 30 located at the top of the slider 29 can monitor the air pressure at the top of the slider 29 in real time, and display the air pressure value on the control panel 2, so that medical staff can adjust the force of the gas to push the rotating rod 26 downward through the adjustable air valve 12 as needed.

[0044] Working principle: The medical staff first pushes the telescopic end of the elastic telescopic rod 25 inward, then inserts the hanging hole 23 at the top of the infusion bag 15 between the two friction sleeves 13, and then loosens the telescopic end of the elastic telescopic rod 25. At this time, the telescopic end of the elastic telescopic rod 25 will pass through the hanging hole 23 when it pops outward, so that the infusion bag 15 is hung on the bottom of the friction sleeve 13 as a whole through the elastic telescopic rod 25 and the hanging hole 23;

[0045] As the liquid inside the infusion bag 15 gradually decreases, the infusion bag 15 will shrink downward from the top. At this time, the top of the infusion bag 15 will not be able to effectively support the friction sleeve 13 after shrinking. At this time, the friction sleeve 13 as a whole will drive the slider 29 to slide downward inside the shielding frame 14 under the action of the overall gravity, so that the rotating rod 26 as a whole can move downward continuously with the degree of shrinkage of the top of the infusion bag 15. When the mounting block 27 moves downward, it will drive the L-shaped plate 10 of the outer wall to move downward continuously, thereby shielding the guide grooves 24 on both sides of the shrinkage area at the top of the infusion bag 15, so that the hot air will only be ejected through the guide grooves 24 on both sides of the part where the liquid on the lower side of the infusion bag 15 supports the friction sleeve 13, thereby stably and accurately heating the liquid inside the infusion bag 15;

[0046] When the friction sleeve 13 follows the shrinking infusion bag 15 and descends to the corresponding height, the gear lever 16 inserted in the corresponding second positioning hole 17 will move to the top of the collision switch 19. After the collision, the collision switch 19 will send an electrical signal to the control panel 2. At this time, the control panel 2 will control the indicator light 3 to light up and the buzzer 9 to sound, reminding the surrounding caregivers and medical staff that the liquid medicine in the patient's infusion bag 15 is about to be finished.

[0047] Embodiment 2:

[0048] An infusion bag infusion intelligent reminder device, such as Figure 1 As shown, a plurality of first positioning holes 6 are opened on the outer wall of one side of the support rod 8, a handle 7 is fixed on the outer wall of one side of the support rod 8, and a plurality of insertion holes 5 are opened on the outer wall of one side of the bracket 1; medical staff can insert the support rod 8 into the corresponding slot 4 as needed to adjust the height of the infusion bag 15 during infusion, and at the same time, the front and rear positions of the support rod 8 can be fixed by using pins through the insertion hole 5 and the first positioning hole 6.

[0049] like Figure 6As shown, the infusion bag 15 is provided with an infusion port 20 on the outer wall at the bottom, and an elastic clamp 33 is sleeved on the outer wall of the infusion port 20. A pull rod 21 is fixed to the outer wall of the elastic clamp 33. Moving blocks 35 are respectively fixed at both ends of the pull rod 21. The moving block 35 is slidably connected to the inner wall of the shielding frame 14, and a counterweight block 34 is fixed to the outer wall at the bottom of the moving block 35. After the hanging hole 23 at the top of the infusion bag 15 is hung on the elastic telescopic rod 25, the infusion port 20 at the bottom of the infusion bag 15 can be clamped by the elastic clamp 33, so that the infusion bag 15 is stretched as a whole by the pull rod 21 and the moving block 35, so that the infusion bag 15 as a whole can be more stretched during infusion, so that the friction sleeve 13 can cooperate with the liquid inside the infusion bag 15 to be stably transported outward.

[0050] Working principle: After hanging the hanging hole 23 at the top of the infusion bag 15 on the elastic telescopic rod 25, the infusion port 20 at the bottom of the infusion bag 15 can be clamped by the elastic clamp 33, so that the infusion bag 15 can be stretched as a whole through the pull rod 21 and the moving block 35, so that the infusion bag 15 as a whole can be more stretched during infusion.

[0051] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An infusion bag infusion intelligent reminder device, comprising a bracket (1), characterized in that: The outer wall of one side of the bracket (1) is provided with a plurality of slots (4), the inner wall of the slots (4) is slidably connected to a support rod (8), a group of shielding frames (14) are fixed to the outer wall of one side of the support rod (8), the outer wall at the top of the shielding frame (14) is provided with an air injection mechanism, a guide groove (24) is provided on the outer wall of one side of the shielding frame (14), the shielding frame (14) and the inner wall of the guide groove (24) are slidably connected to a slider (29), a group of mounting blocks (27) are slidably connected to the outer wall of one side of the slider (29), a rotating rod (26) is rotatably connected to one side of the mounting block (27), a friction sleeve (13) is fixed to the outer wall of the rotating rod (26), and an elastic telescopic rod (25) is fixed to the outer wall of one side of the support rod (8); An L-shaped plate (10) is fixed to the outer wall of the top of the mounting block (27), the L-shaped plate (10) is slidably connected to the inner wall of the guide groove (24), and a limiting mechanism is provided on the outer wall of the L-shaped plate (10) and the support rod (8).

2. The intelligent reminder device for infusion bag infusion according to claim 1, characterized in that: The outer wall of the telescopic end of the elastic telescopic rod (25) supports a hanging hole (23), the outer wall at the bottom of the hanging hole (23) is provided with an infusion bag (15), and the outer wall at the bottom of the infusion bag (15) is provided with an infusion port (20).

3. The intelligent reminder device for infusion bag infusion according to claim 1, characterized in that: The limiting mechanism comprises a shift lever (16), a second positioning hole (17), a collision switch (19) and a connecting block (18); a plurality of second positioning holes (17) are arranged on an outer wall of one side of the L-shaped plate (10); the shift lever (16) is plugged into the inner wall of the second positioning hole (17); the connecting block (18) is fixed to an outer wall of one side of the shift lever (16); and the collision switch (19) is fixed to the outer wall of the top of the support rod (8).

4. The intelligent reminder device for infusion bag infusion according to claim 1, characterized in that: A buzzer (9), an indicator light (3) and a control panel (2) are fixed to an outer wall of one side of the bracket (1); the collision switch (19), the buzzer (9) and the indicator light (3) are electrically connected to the control panel (2) respectively.

5. The intelligent reminder device for infusion bag infusion according to claim 1, characterized in that: The air injection mechanism comprises an air guide pipe (11), an adjustable air valve (12), an air guide port (22) and an air inlet (36).

6. The intelligent reminder device for infusion bag infusion according to claim 1, characterized in that: A pressure sensor (30) is fixed to the outer wall of the top of the sliding block (29), and the pressure sensor (30) is electrically connected to the control panel (2).

7. The intelligent reminder device for infusion bag infusion according to claim 1, characterized in that: An elastic stopper (32) is fixed to an outer wall on one side of the mounting block (27), a spring (28) is fixed to an outer wall on one side of the mounting block (27), a stopper (31) is fixed to an outer wall on one side of the spring (28), and the stopper (31) is fixed to an outer wall on one side of the sliding block (29).

8. The intelligent reminder device for infusion bag infusion according to claim 3, characterized in that: A plurality of first positioning holes (6) are formed on the outer wall of one side of the support rod (8), a handle (7) is fixed on the outer wall of one side of the support rod (8), and a plurality of insertion holes (5) are formed on the outer wall of one side of the bracket (1).

9. The intelligent reminder device for infusion bag infusion according to claim 2, characterized in that: The infusion bag (15) is provided with an infusion port (20) on the outer wall at the bottom, an elastic clamp (33) is sleeved on the outer wall of the infusion port (20), a pull rod (21) is fixed to the outer wall of the elastic clamp (33), moving blocks (35) are respectively fixed at both ends of the pull rod (21), the moving block (35) is slidably connected to the inner wall of the shielding frame (14), and a counterweight block (34) is fixed to the outer wall at the bottom of the moving block (35).

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