Supporting and lifting device and medical equipment

Abstract

The utility model relates to the field of medical instruments, and discloses a supporting and lifting device and medical equipment. A supporting lifting device comprises a supporting arm base, a supporting seat, a first connecting rod, a second connecting rod, a mechanical spring, a releasing mechanism and a lockable hydraulic gas spring. The supporting arm base, the first connecting rod, the second connecting rod and the supporting base are hinged to form a four-connecting-rod structure. The other end of the mechanical spring is hinged with the first connecting rod; the release mechanism comprises a release joint and an electromagnetic valve; the electromagnetic valve is in transmission connection with a piston rod of the lockable hydraulic gas spring through the release joint; one end, far away from the release joint, of the lockable hydraulic gas spring is hinged with the first connecting rod. According to the oblique arm type lifting system, the advantages of a mechanical spring and an air spring are mainly combined for mutual compensation, and the convenient and reliable oblique arm type lifting system is provided. The electromagnetic valve can be in signal connection with the control panel, the electromagnetic valve is driven by the control panel to be switched between the unlocking station and the locking station, and operation is convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of medical equipment, in particular to a supporting lifting device and medical equipment. Background Art

[0002] When using medical equipment such as ultrasound diagnostic equipment, medical staff need to move the control panel of the ultrasound equipment to the most comfortable position based on different application scenarios and their own body shape. This requires that the control panel needs to be movable in any direction and can be stopped and fixed at any position. In addition, the traditional lifting system is vertical lifting, and the lifting mechanism is located inside the fuselage, occupying the size of the fuselage. With the changes in product appearance and the requirements for miniaturization of internal space, the oblique arm lifting system can effectively solve such problems. However, there are two major types of oblique arm lifting systems at present. One is a pure mechanical spring system. This type of system has a complex structure, many mechanical parts, difficult assembly, and cannot be locked freely. It requires an additional design of a lock, which occupies the internal space size. The other type is a pure gas spring design. Due to the unavoidable attenuation problem of gas spring components, this type of system will produce force changes after long-term use, causing the experience to deteriorate. Utility Model Content

[0003] The utility model discloses a supporting lifting device and medical equipment, which adopt a mechanical spring and a lockable hydraulic gas spring to jointly provide stable support to achieve oblique arm lifting.

[0004] In order to achieve the above object, the utility model provides the following technical solutions:

[0005] In a first aspect, an embodiment of the utility model provides a support lifting device, including an arm base, a support seat, a first connecting rod, a second connecting rod, a mechanical spring, a release mechanism and a lockable hydraulic gas spring;

[0006] The arm base, the first connecting rod, the second connecting rod and the support seat are hinged to form a four-link structure;

[0007] One end of the mechanical spring is hinged to the second connecting rod, and the other end is hinged to the first connecting rod;

[0008] The release mechanism includes a release joint and a solenoid valve, wherein the solenoid valve is transmission-connected to the piston rod of the lockable hydraulic gas spring via the release joint; the release joint is hinged to the second connecting rod, and the lockable hydraulic gas spring is hinged to the first connecting rod at one end away from the release joint.

[0009] The above-mentioned support lifting device is used in medical equipment to support the control panel of the medical equipment. The support arm base, the first connecting rod, the second connecting rod and the support seat are hinged to form a four-link structure. The mechanical spring and the lockable hydraulic gas spring are both connected between the first connecting rod and the second connecting rod to play a supporting role. The lockable hydraulic gas spring has a locked state and an unlocked state. When the lockable hydraulic gas spring is in the locked state, the solenoid valve in the release mechanism is in the locked position, and the length of the lockable hydraulic gas spring cannot be adjusted, thereby cooperating with the mechanical spring to provide stable support to achieve the hovering of the control panel; when the lockable hydraulic gas spring is in the unlocked state, the solenoid valve in the release mechanism is in the unlocked position, and the length of the lockable hydraulic gas spring can be adjusted. Specifically, the operator applies force to the control panel by hand to achieve the function of moving the control panel up and down. It is worth noting that in this embodiment, the solenoid valve can be connected to the control panel signal, and the solenoid valve is driven by the control panel to switch between the unlocked position and the locked position, which is easy to operate.

[0010] In some embodiments, the solenoid valve includes a main body and a shaft core, one end of the shaft core is located inside the main body and is used to provide power;

[0011] The release joint includes a release head body and a transmission assembly installed inside the release head body. One end of the transmission assembly is transmission-connected to the shaft core, and the other end is transmission-connected to the piston rod of the lockable hydraulic gas spring, and is used to trigger the piston rod to unlock the lockable hydraulic gas spring.

[0012] In some embodiments, the transmission assembly includes a first connecting rod, a second connecting rod, and a third connecting rod;

[0013] The release head body has an escape space, and the second connecting rod and the third connecting rod are both located inside the escape space;

[0014] One end of the first connecting rod is hinged to the shaft core, and the other end is hinged to the second connecting rod, and the second connecting rod is hinged to the release head body at one end away from the first connecting rod; one end of the third connecting rod is hinged to the release head body, and the other end is abutted against the middle of the second connecting rod;

[0015] A surface of one side of the third connecting rod away from the second connecting rod abuts against the piston rod of the lockable hydraulic gas spring.

[0016] In some embodiments, a protrusion is formed on the side of the second connecting rod facing the third connecting rod, and the abutment position between the third connecting rod and the second connecting rod is located between the vertex of the protrusion and the fixed hinge position of the second connecting rod, wherein the fixed hinge position of the second connecting rod is the hinge position of the second connecting rod and the release head body.

[0017] In some embodiments, the mechanical spring includes a first mounting seat, a telescopic shaft set, a compression spring, and a second mounting seat;

[0018] One end of the telescopic shaft group is fixedly mounted on the first mounting seat, and the other end is fixedly mounted on the second mounting seat;

[0019] The compression spring is sleeved on the outside of the telescopic shaft group, and one end of the compression spring abuts against the adjusting nut installed on the first mounting seat, and the other end abuts against the second mounting seat.

[0020] In some embodiments, the telescopic shaft assembly includes a guide shaft, an optical shaft and a linear bearing; the linear bearing is sleeved inside the guide shaft; the optical shaft is inserted into the linear bearing and can slide along the axis relative to the guide shaft;

[0021] One end of the guide shaft away from the optical axis is detachably connected to the first mounting seat;

[0022] One end of the optical axis away from the guide axis is detachably connected to the second mounting seat.

[0023] In some embodiments, the compression spring includes a first connecting end and a second connecting end, the first connecting end is threadedly connected to the first mounting seat; the second connecting end is threadedly connected to the second mounting seat.

[0024] In some embodiments, the first connecting rod is rotatably connected to the support arm base via a first rotating shaft, and the first rotating shaft is fixed to the first connecting rod;

[0025] And / or, the first connecting rod is rotatably connected to the support seat via a second rotating shaft, and the second rotating shaft is fixed to the first connecting rod.

[0026] In some embodiments, the second connecting rod is rotatably connected to the support arm base via a third rotating shaft, and the third rotating shaft is fixed to the second connecting rod;

[0027] And / or, the second connecting rod is rotatably connected to the support seat via a fourth rotating shaft, and the fourth rotating shaft is fixed to the second connecting rod.

[0028] In the second aspect, an embodiment of the utility model also provides a medical device, including a main unit and a control panel, and also includes a supporting and lifting device as described in any one of the embodiments of the first aspect; the support arm base of the supporting and lifting device is fixed to the main unit, and the control panel is fixed to the support base of the supporting and lifting device; and the control panel is connected to the solenoid valve signal in the supporting and lifting device. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1A three-dimensional diagram of a support and lifting device provided in an embodiment of the utility model;

[0030] Figure 2 A front view of a supporting lifting device provided by an embodiment of the utility model;

[0031] Figure 3 An exploded view of a supporting lifting device provided in an embodiment of the utility model;

[0032] Figure 4 It is a structural schematic diagram of the support arm base;

[0033] Figure 5 It is a structural schematic diagram of the support seat;

[0034] Figure 6 is a structural schematic diagram of the first connecting rod;

[0035] Figure 7 is a structural schematic diagram of the second rotating shaft;

[0036] Figure 8 is a schematic structural diagram of the second connecting rod;

[0037] Fig. 9 is a schematic structural diagram of the fifth rotating shaft;

[0038] Fig.10 A three-dimensional diagram of the assembly structure of the release mechanism and the lockable hydraulic gas spring;

[0039] Fig.11 An exploded view of the assembly structure of the release mechanism and the lockable hydraulic gas spring;

[0040] Fig.12 A cross-sectional view of the assembly structure of the release mechanism and the lockable hydraulic gas spring;

[0041] Fig.13 It is a three-dimensional stereogram of a mechanical spring;

[0042] Fig.14 This is an exploded diagram of a mechanical spring;

[0043] Fig.15 is a cross-sectional view of a mechanical spring;

[0044] Icons: 100-arm base; 200-support seat; 300-first connecting rod; 400-second connecting rod; 500-mechanical spring; 600-release mechanism; 700-lockable hydraulic gas spring; 310-second rotating shaft; 311-first retaining ring; 312-fastening screw; 310a-section surface; 320-fifth rotating shaft; 321-bushing; 510-first mounting seat; 520-telescopic shaft group; 530-compression spring; 540-second mounting seat; 511-adjusting nut; 512-plastic gasket; 513 -metal gasket; 521-guide shaft; 522-optical axis; 523-linear bearing; 522a-gasket; 522b-screw; 522c-circlip; 531-first connecting end; 532-second connecting end; 610-release joint; 620-solenoid valve; 630-auxiliary fixing bracket; 611-release head body; 611a-pin shaft; 612-first connecting rod; 613-second connecting rod; 613a-protrusion; 614-third connecting rod; 621-main body; 622-shaft core; 710-piston rod. DETAILED DESCRIPTION

[0045] First, let me introduce the application scenario of this application: In a trolley-type ultrasound device, the user will adjust the control panel of the ultrasound device up and down to a suitable height position based on different usage scenarios and their own height. This requires that the support device between the control panel and the host needs to have a lifting function. The lifting device of the control panel of a traditional ultrasound device includes a vertical lifting device and an oblique arm lifting device. The weight of the control panel in the ultrasound device is usually more than 30KG, which requires that the support lifting device needs sufficient and stable supporting force to achieve a torque balance with the deadweight of the control panel. When the panel position is locked, the supporting force must be much greater than the deadweight of the control panel to ensure the stability of the control panel after being locked. The sources of support force in traditional ultrasound equipment include gas springs, lockable gas springs, motor-controlled mechanical springs and other components, but none of them can meet current needs.

[0046] Based on the above application scenarios, the embodiments of the present application provide a support lifting device and medical equipment, which are implemented by the joint action of a lockable hydraulic gas spring and a mechanical spring. The mechanical properties of the mechanical spring are stable, and the spring rebound force will not decay after long-term use. It can effectively compensate for the attenuation of the support force of the lockable hydraulic gas spring after long-term use, and increase the reliability of the ultrasonic equipment after long-term use. The lockable hydraulic gas spring is easy to lock and simple to assemble, which can effectively compensate for the problems of difficult locking of the mechanical spring and numerous parts.

[0047] The following will combine the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model. Among them, in the description of the embodiments of the present application, unless otherwise specified, " / " means or, for example, A / B can mean A or B; "and / or" in the text is only a description of the association relationship of associated objects, indicating that there can be three relationships, for example, A and / or B can mean: A exists alone, A and B exist at the same time, and B exists alone. In addition, in the description of the embodiments of the present application, "multiple" refers to two or more than two.

[0048] In the following, the terms "first" and "second" are used for descriptive purposes only and are not to be understood as suggesting or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features, and in the description of the embodiments of the present application, unless otherwise specified, "plurality" means two or more.

[0049] First, as Figures 1 to 3 As shown, an embodiment of the utility model provides a supporting lifting device, including an arm base 100, a support seat 200, a first connecting rod 300, a second connecting rod 400, a mechanical spring 500, a release mechanism 600 and a lockable hydraulic gas spring 700; the arm base 100, the first connecting rod 300, the second connecting rod 400 and the support seat 200 are hinged to form a four-link structure; one end of the mechanical spring 500 is hinged to the second connecting rod 400, and the other end is hinged to the first connecting rod 300; the release mechanism 600 includes a release joint 610 and a solenoid valve 620, and the solenoid valve 620 is transmission-connected to the piston rod 710 of the lockable hydraulic gas spring 700 through the release joint 610; the release joint 610 is hinged to the second connecting rod 400, and the end of the lockable hydraulic gas spring 700 away from the release joint 610 is hinged to the first connecting rod 300.

[0050] The above-mentioned support lifting device is used in medical equipment to support the control panel of the medical equipment. The support arm base 100, the first connecting rod 300, the second connecting rod 400 and the support seat 200 are hinged to form a four-link structure, and the mechanical spring 500 and the lockable hydraulic gas spring 700 are both connected between the first connecting rod 300 and the second connecting rod 400 to play a supporting role. The lockable hydraulic gas spring 700 has a locked state and an unlocked state. When the lockable hydraulic gas spring 700 is in the locked state, the solenoid valve 620 in the release mechanism 600 is in the locked position, and the length of the lockable hydraulic gas spring 700 cannot be adjusted, so as to cooperate with the mechanical spring 500 to provide stable support and realize the hovering of the control panel; when the lockable hydraulic gas spring 700 is in the unlocked state, the solenoid valve 620 in the release mechanism 600 is in the unlocked position, and the length of the lockable hydraulic gas spring 700 can be adjusted. Specifically, the operator applies force to the control panel by hand to realize the function of moving the control panel up and down. It is worth noting that, in this embodiment, the solenoid valve 620 can be connected to the control panel signal, and the solenoid valve 620 can be driven by the control panel to switch between the unlocking position and the locking position, which is easy to operate.

[0051] One possible way to achieve this is as follows: Figure 1 As shown, the arm base 100, the first connecting rod 300, the second connecting rod 400 and the support seat 200 are hinged to form a four-link structure, and the mechanical spring 500 and the lockable hydraulic gas spring 700 are respectively located on the opposite sides of the first connecting rod 300, which are used to jointly support the first connecting rod 300, and then support the entire support seat 200. When the supporting driving force is large, since the present embodiment adopts the mechanical spring 500 and the lockable hydraulic gas spring 700 to jointly support, the force required for the parts can be effectively reduced and the reliability of the parts can be improved. Here, the parts can be understood as the most basic components that directly constitute the finished product, but unlike the parts, it is not necessarily a part, but can also be a semi-finished product or a finished product. At the same time, the lockable hydraulic gas spring 700 and the mechanical spring 500 each have advantages and disadvantages. The combination of the two can achieve the effect of mutual compensation, and better improve the reliability and operation convenience of the support lifting device. The mechanical compression spring has strong reliability, can effectively compensate for the attenuation of the driving force of the gas spring after long-term use, can ensure the consistency of the use experience of the ultrasonic equipment for a longer time, increase the service life of the ultrasonic equipment, and reduce the maintenance and repair costs. The lockable hydraulic gas spring 700 is easy to operate, does not require an additional locking mechanism, and effectively reduces the internal space. When the operator uses it, he only needs to press a button to lock it. In addition, the lockable hydraulic gas spring 700 has a high degree of modularity, is easy to assemble, and has a low cost. It can effectively make up for the problems of the mechanical spring 500 being difficult to lock and having many installation parts. This application mainly combines the advantages of the mechanical spring 500 and the gas spring to complement each other and provide a convenient and reliable inclined arm lifting system.

[0052] It should be noted that the arm base 100, the first connecting rod 300, the second connecting rod 400 and the support base 200 are hinged to form a four-bar structure, and the four-bar structure has four revolute pairs. When the position of the arm base 100 is relatively fixed, the support base 200 can achieve up and down displacement through the revolute pairs. Among them: the four revolute pairs of the four-bar structure can be realized through a rotating shaft or other hinged methods, such as a hinge or a bearing.

[0053] In some embodiments, the first connecting rod 300 is rotatably connected to the arm base 100 via a first rotating shaft, and the first rotating shaft is fixed to the first connecting rod 300; and / or, the first connecting rod 300 is rotatably connected to the support base 200 via a second rotating shaft 310, and the second rotating shaft 310 is fixed to the first connecting rod 300.

[0054] In one possible implementation, the structure of the arm base 100 is as follows: Figure 4 As shown, the bottom of the arm base 100 has a mounting plate for fixing the arm base 100, for example, the mounting plate is mounted on the host of the medical device through four screw holes; the upper part of the arm base 100 is also provided with an axial hole for connecting the first connecting rod 300, and a self-lubricating bushing 321 is interference-fitted in the axial hole. The structure of the support base 200 is as shown in FIG. Figure 5 As shown, the top of the support base 200 has a mounting plate for fixing the support base 200, for example, the mounting plate is mounted on the control panel of the medical device through four screw holes; the middle of the support base 200 is also provided with an axial hole for connecting the first connecting rod 300, and a self-lubricating bushing 321 is interference-fitted in the axial hole. Figure 6 and Figure 7 As shown, the first connecting rod 300 is rotatably connected to the support seat 200 through the second rotating shaft 310, and a cross-sectional surface 310a is arranged on the side of the second rotating shaft 310, and the cross-sectional surface 310a is a plane. A screw hole is opened on the first connecting rod 300, and the first connecting rod 300 fixes the second rotating shaft 310 to the first connecting rod 300 through the screw hole and the fastening screw 312. The two ends of the second rotating shaft 310 are clamped and fixed by the first retaining spring 311, so that the second rotating shaft 310 is fixed in the shaft hole of the first connecting rod 300. The first connecting rod 300 is rotatably connected to the support arm base 100 through the first rotating shaft. For the convenience of manufacturing and installation, the first rotating shaft structure is the same as the second rotating shaft 310 structure, that is, a section surface is provided on the side of the first rotating shaft, and the section surface is a plane. A screw hole is provided on the first connecting rod 300, and the first rotating shaft is fixed to the first connecting rod 300 through the screw hole and the fastening screw. The two ends of the first rotating shaft are clamped and fixed by the clamping spring, so that the first rotating shaft is fixed in the shaft hole of the first connecting rod 300. Of course, the structure of the first rotating shaft can also be different from that of the second rotating shaft 310, which is not specifically limited here.

[0055] In some embodiments, the second connecting rod 400 is rotatably connected to the support arm base 100 via a third rotating shaft, and the third rotating shaft is fixed to the second connecting rod 400;

[0056] And / or, the second connecting rod 400 is rotatably connected to the support base 200 via a fourth rotating shaft, and the fourth rotating shaft is fixed to the second connecting rod 400 .

[0057] In one possible implementation, the structure of the arm base 100 is as follows: Figure 4 As shown, the middle part of the arm base 100 is also provided with an axial hole for connecting the second connecting rod 400, and a self-lubricating bushing is interference-fitted in the axial hole. Figure 5 As shown, the bottom of the support seat 200 is also provided with an axial hole for connecting the second connecting rod 400, and a self-lubricating bushing is interference-fitted in the axial hole. Figure 8 As shown, combined with Figure 7 The second connecting rod 400 is rotatably connected to the support arm base 100 through the third rotating shaft. In order to facilitate manufacturing and installation, the third rotating shaft structure is the same as the second rotating shaft 310 structure, that is, a cross-sectional surface is provided on the side of the third rotating shaft, and the cross-sectional surface is a plane. A screw hole is opened on the second connecting rod 400, and the second connecting rod 400 is fixed to the second connecting rod 400 through the screw hole and the fastening screw. The two ends of the third rotating shaft are fixed by clamping springs, so that the third rotating shaft is fixed in the shaft hole of the second connecting rod 400. The second connecting rod 400 is rotatably connected to the support seat 200 via a fourth rotating shaft. For the convenience of manufacturing and installation, the structure of the fourth rotating shaft is the same as that of the second rotating shaft 310, that is, a section surface is provided on the side of the fourth rotating shaft, and the section surface is a plane. A screw hole is provided on the second connecting rod 400, and the second connecting rod 400 fixes the fourth rotating shaft to the second connecting rod 400 through the screw hole and the fastening screw. The two ends of the fourth rotating shaft are clamped and fixed by a retaining spring, so that the fourth rotating shaft is fixed in the shaft hole of the second connecting rod 400. Of course, the structure of the fourth rotating shaft can also be different from that of the second rotating shaft 310, which is not specifically limited here.

[0058] It is understandable that the first connecting rod 300, the second connecting rod 400, the support arm base 100 and the support seat 200 are connected through a rotating shaft, and the force arms at the upper and lower ends are also relatively long. The gap between the shaft holes will directly affect the stability of the control panel, and the shaking of the control panel will reduce the user experience. Therefore, it is necessary to reduce the matching clearance between several rotating pairs. For example: ① Reduce the number of rotating pairs, add a cutting plane on the rotating shaft, add a screw hole at the matching position of the shaft hole corresponding to the first connecting rod 300 and the second connecting rod 400, and use a flat-end set screw to fix the rotating shaft after the rotating shaft is pressed in, so as to reduce the gap between the connecting rod and the rotating shaft. ② For the necessary rotating pairs, use a bushing, a shaft hole, and a rotating shaft to cooperate with each other, and install the gap in an interference fit manner. ③ The hinge between the connecting rod and the support seat 200, only one rotating pair is retained at each of the four-link hinges, and the rotating pair can be limited by using, but not limited to, set screws, ball screws, screws, etc.

[0059] It should be noted that the lockable hydraulic gas spring 700 includes a piston rod 710, and the lockable hydraulic gas spring 700 can be unlocked by pressing the piston rod 710. The lockable hydraulic gas spring 700 and the mechanical spring 500 are respectively hinged to the first connecting rod 300 and the second connecting rod 400 through the fifth rotating shaft 320 to form a revolving pair. The structure of the fifth rotating shaft 320 is as follows: Fig. 9 As shown. A lubricable bushing 321 is interference-fitted in the shaft hole of the lockable hydraulic gas spring 700, so as to adjust the assembly clearance between the rotating pairs. Within the travel of the support arm in the up and down directions, the mechanical spring 500 will always be in a compressed state, and can always provide a stable supporting force, which works together with the supporting force provided by the lockable hydraulic gas spring 700 to support the control panel.

[0060] In some embodiments, the solenoid valve 620 includes a main body 621 and a shaft core 622, one end of the shaft core 622 is located inside the main body 621 for providing power; the release joint 610 includes a release head body 611 and a transmission assembly installed inside the release head body 611, one end of the transmission assembly is transmission-connected to the shaft core 622, and the other end is transmission-connected to the piston rod 710 of the lockable hydraulic gas spring 700, for triggering the piston rod 710 to unlock the lockable hydraulic gas spring 700.

[0061] One possible way to achieve this is as follows: Figure 10-12As shown, the lockable hydraulic gas spring 700 and the release joint 610 are connected by threads, and the nut provided by the lockable hydraulic gas spring 700 can fix the auxiliary fixing bracket 630 between the two. The main body 621 of the solenoid valve 620 is fixed to the auxiliary fixing bracket 630 with a nut. The electrical signal of the solenoid valve 620 is provided and controlled by the host and the control panel. When the power is not supplied, the shaft core 622 will be pulled out of the main body 621 by the force of the transmission component for a certain distance. At this time, the transmission component will not squeeze the contact point of the piston rod 710 of the lockable hydraulic gas spring 700, and the lockable hydraulic gas spring 700 is in a locked state. At this time, the support force of the lockable hydraulic gas spring 700 will be 2-4 times that of the unlocked state, which can effectively fix the control panel at a specified height position. When the solenoid valve 620 is energized, the shaft core 622 is pulled back into the main body 621 of the solenoid valve 620, driving the transmission assembly to squeeze the contact point of the piston rod 710 of the lockable hydraulic gas spring 700. At this time, the lockable hydraulic gas spring 700 is in an unlocked state.

[0062] In some embodiments, the transmission assembly includes a first connecting rod 612, a second connecting rod 613 and a third connecting rod 614; the release head body 611 has an avoidance space, and the second connecting rod 613 and the third connecting rod 614 are both located inside the avoidance space; one end of the first connecting rod 612 is hinged to the shaft core 622, and the other end is hinged to the second connecting rod 613, and the second connecting rod 613 is hinged to the release head body 611 at one end away from the first connecting rod 612; one end of the third connecting rod 614 is hinged to the release head body 611, and the other end abuts against the middle part of the second connecting rod 613; the surface of the third connecting rod 614 on one side away from the second connecting rod 613 abuts against the piston rod 710 of the lockable hydraulic gas spring 700.

[0063] One possible way to achieve this is as follows: Figure 10-12As shown, the shaft core 622 of the solenoid valve 620 and the first connecting rod 612 are rotatably connected through a pin shaft, and the first connecting rod 612 is rotatably connected to the second connecting rod 613 through a pin shaft 611a. The two pin shafts can be of the same size or different sizes. The second connecting rod 613 and the third connecting rod 614 form a lever structure. When the solenoid valve 620 is not powered on, the shaft core 622 will be pulled out of the main body 621 by a certain distance due to the force of the lever structure in the release head body 611 and its own gravity. At this time, the third connecting rod 614 inside the release head body 611 will not squeeze the contact point of the piston rod 710 of the lockable hydraulic gas spring 700, and the lockable hydraulic gas spring 700 is in a locked state. When the solenoid valve 620 is energized, the shaft core 622 will be pulled back into the solenoid valve 620 body 621. The pulling force needs to overcome the weight of the shaft core 622 and the force of the lever structure inside the release head body 611 touching the piston rod 710 of the lockable hydraulic gas spring 700, so a large power is required. The solenoid valve 620 will heat up quickly after being energized, so a large power input cannot be applied to the solenoid valve 620 for a long time. However, the longer the shaft core 622 is inside the body 621 before being energized, the greater the force generated by the solenoid valve 620 under the same power input, so the length of the shaft core 622 inside the body 621 should be extended as much as possible while ensuring the restoring force and stroke requirements.

[0064] In some embodiments, a protrusion 613a is formed on the side of the second connecting rod 613 facing the third connecting rod 614, and the abutment position between the third connecting rod 614 and the second connecting rod 613 is located between the vertex of the protrusion 613a and the fixed hinge position of the second connecting rod 613, wherein the fixed hinge position of the second connecting rod 613 is the hinge position of the second connecting rod 613 and the release head body 611.

[0065] One possible way to achieve this is as follows: Fig.12 As shown, in order to avoid failure of the connection between the third connecting rod 614 and the second connecting rod 613, a protrusion 613a is formed on the second connecting rod 613 toward the side of the third connecting rod 614, and the abutment position of the third connecting rod 614 and the second connecting rod 613 is set between the vertex of the protrusion 613a and the fixed hinge position of the second connecting rod 613, thereby avoiding the third connecting rod 614 from rotating too much clockwise and failing to abut against the second connecting rod 613.

[0066] In some embodiments, the mechanical spring 500 includes a first mounting seat 510, a telescopic shaft group 520, a compression spring 530 and a second mounting seat 540; one end of the telescopic shaft group 520 is fixed to the first mounting seat 510, and the other end is fixed to the second mounting seat 540; the compression spring 530 is sleeved on the outside of the telescopic shaft group 520, and one end abuts against the adjusting nut 511 installed on the first mounting seat 510, and the other end abuts against the second mounting seat 540.

[0067] One possible way to achieve this is as follows: Figure 13-Figure 15 As shown, the first mounting seat 510 of the mechanical spring 500 is connected to the first connecting rod 300 by a rotating shaft to form a rotating pair, and the second mounting seat 540 of the mechanical spring 500 is connected to the second connecting rod 400 by a rotating shaft to form a rotating pair. The two rotating shafts can be of the same size or different sizes. A lubricable bushing is interference-fitted in the shaft hole of the first mounting seat 510. Similarly, a lubricable bushing is also interference-fitted in the shaft hole of the second mounting seat 540, so as to adjust the assembly clearance between the rotating pairs. A compression spring 530 is used in the mechanical spring 500, that is, the spring is limited to a fixed length range by using a pre-assembly method of components.

[0068] In some embodiments, the telescopic shaft group 520 includes a guide shaft 521, an optical axis 522 and a linear bearing 523; the linear bearing 523 is sleeved on the inner side of the guide shaft 521; the optical axis 522 is inserted into the linear bearing 523 and can slide along the axis relative to the guide shaft 521; the end of the guide shaft 521 away from the optical axis 522 is detachably connected to the first mounting seat 510; the end of the optical axis 522 away from the guide shaft 521 is detachably connected to the second mounting seat 540.

[0069] One possible way to achieve this is as follows: Fig.14 and Fig.15 As shown, the linear bearing 523 is installed into the guide shaft 521, and the end face is fixed with a retaining ring 522c. The optical axis 522 passes through the linear bearing 523, and a gasket 522a is added to the end face and fixed with a screw 522b, and the other end is connected to the second mounting seat 540 by a thread. The first mounting seat 510 is connected to the guide shaft 521 by internal and external threads, and the compression spring 530, metal gasket 513, self-lubricating plastic gasket 512 and adjustment nut 511 are placed in sequence. The compression spring 530 can reduce the length of the mechanical spring 500 to a suitable installation size, and then the mechanical module is hinged to the first connecting rod 300 and the second connecting rod 400 by a rotating shaft. Because the compression spring 530 in the mechanical spring 500 is always in a compressed state, during the device maintenance process, the spring of the rotating shaft will rebound when it is taken out, and the rebound force is large, so its rebound needs to be limited to a specified range. In this embodiment, the maximum distance between the second mounting seat 540 and the first mounting seat 510 will be limited, and the spring will be limited to this distance when it rebounds, and there will be no risk of exceeding the mechanical spring 500. In this embodiment, the first mounting seat 510 is matched with the adjustment nut 511 in the form of an external thread. The rebound force of the compression spring 530 is adjusted by changing the screw-in depth of the adjustment nut 511, thereby increasing the adjustment ability of the torque balance of the supporting lifting device. In addition, adding a metal gasket 513 and a plastic gasket 512 between the adjustment nut 511 and the spring can greatly reduce the difficulty of adjusting the nut when the rebound force is large.

[0070] In some embodiments, the compression spring 530 includes a first connection end 531 and a second connection end 532 , wherein the first connection end 531 is threadedly connected to the first mounting seat 510 ; and the second connection end 532 is threadedly connected to the second mounting seat 540 .

[0071] In order to improve the connection reliability of the compression spring 530, the two ends of the compression spring 530 can be connected to the first mounting seat 510 and the second mounting seat 540 respectively. For example, threads can be tapped at both ends of the compression spring 530 to form a first connecting end 531 and a second connecting end 532 respectively. During specific operations, the number of turns of the two ends of the compression spring 530 can be increased, and internal threads can be added inside. The height of the boss of the second mounting seat 540 can be increased and external threads can be added to cooperate with the internal threads of the compression spring 530.

[0072] In the second aspect, an embodiment of the utility model also provides a medical device, including a main unit and a control panel, and also includes a supporting lifting device as any one of the embodiments of the first aspect; the support arm base of the supporting lifting device is fixedly mounted on the main unit, and the control panel is fixedly mounted on the support seat of the supporting lifting device; and the control panel is connected to the solenoid valve signal in the supporting lifting device.

[0073] The medical equipment provided by the embodiment of the utility model adopts the form of lockable hydraulic gas spring and mechanical spring to jointly provide supporting driving force, realizes the oblique arm lifting system of ultrasonic equipment, realizes the adjustment of the height of the control panel, and realizes locked hovering within the adjustable range. At the same time, it solves the problem of unstable hovering caused by the attenuation of supporting force after long-term use of gas springs, and can also solve the problem of difficulty in component selection and potential safety hazards caused by excessive force of a single gas spring or a single mechanical spring.

[0074] Obviously, those skilled in the art can make various changes and modifications to the embodiments of the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. A supporting lifting device, characterized in that: It includes an arm base, a support seat, a first connecting rod, a second connecting rod, a mechanical spring, a release mechanism and a lockable hydraulic gas spring; The arm base, the first connecting rod, the second connecting rod and the support seat are hinged to form a four-link structure; One end of the mechanical spring is hinged to the second connecting rod, and the other end is hinged to the first connecting rod; The release mechanism includes a release joint and a solenoid valve, wherein the solenoid valve is transmission-connected to the piston rod of the lockable hydraulic gas spring via the release joint; the release joint is hinged to the second connecting rod, and the lockable hydraulic gas spring is hinged to the first connecting rod at one end away from the release joint.

2. The supporting and lifting device according to claim 1, characterized in that: The solenoid valve comprises a main body and a shaft core, one end of the shaft core is located inside the main body and is used to provide power; The release joint includes a release head body and a transmission assembly installed inside the release head body. One end of the transmission assembly is transmission-connected to the shaft core, and the other end is transmission-connected to the piston rod of the lockable hydraulic gas spring, and is used to trigger the piston rod to unlock the lockable hydraulic gas spring.

3. The supporting and lifting device according to claim 2, characterized in that: The transmission assembly includes a first connecting rod, a second connecting rod and a third connecting rod; The release head body has an escape space, and the second connecting rod and the third connecting rod are both located inside the escape space; One end of the first connecting rod is hinged to the shaft core, and the other end is hinged to the second connecting rod, and the second connecting rod is hinged to the release head body at one end away from the first connecting rod; one end of the third connecting rod is hinged to the release head body, and the other end is abutted against the middle of the second connecting rod; A surface of one side of the third connecting rod away from the second connecting rod abuts against the piston rod of the lockable hydraulic gas spring.

4. The supporting and lifting device according to claim 3, characterized in that: A protrusion is formed on the second connecting rod toward the third connecting rod, and the abutment position between the third connecting rod and the second connecting rod is located between the vertex of the protrusion and the fixed hinge position of the second connecting rod, wherein the fixed hinge position of the second connecting rod is the hinge position of the second connecting rod and the release head body.

5. The supporting and lifting device according to claim 1, characterized in that: The mechanical spring comprises a first mounting seat, a telescopic shaft group, a compression spring, and a second mounting seat; One end of the telescopic shaft group is fixedly mounted on the first mounting seat, and the other end is fixedly mounted on the second mounting seat; The compression spring is sleeved on the outside of the telescopic shaft group, and one end of the compression spring abuts against the adjusting nut installed on the first mounting seat, and the other end abuts against the second mounting seat.

6. The supporting and lifting device according to claim 5, characterized in that: The telescopic shaft assembly includes a guide shaft, an optical shaft and a linear bearing; the linear bearing is sleeved on the inner side of the guide shaft; the optical shaft is inserted into the linear bearing and can slide along the axis relative to the guide shaft; One end of the guide shaft away from the optical axis is detachably connected to the first mounting seat; One end of the optical axis away from the guide axis is detachably connected to the second mounting seat.

7. The supporting and lifting device according to claim 5, characterized in that: The compression spring includes a first connection end and a second connection end, wherein the first connection end is threadedly connected to the first mounting seat; and the second connection end is threadedly connected to the second mounting seat.

8. The supporting and lifting device according to claim 1, characterized in that: The first connecting rod is rotatably connected to the support arm base via a first rotating shaft, and the first rotating shaft is fixed to the first connecting rod; And / or, the first connecting rod is rotatably connected to the support seat via a second rotating shaft, and the second rotating shaft is fixed to the first connecting rod.

9. The supporting and lifting device according to claim 1, characterized in that: The second connecting rod is rotatably connected to the support arm base via a third rotating shaft, and the third rotating shaft is fixed to the second connecting rod; And / or, the second connecting rod is rotatably connected to the support seat via a fourth rotating shaft, and the fourth rotating shaft is fixed to the second connecting rod.

10. A medical device, characterized in that: It includes a main unit and a control panel, and also includes a supporting lifting device as described in any one of claims 1 to 9; the support arm base of the supporting lifting device is fixedly mounted on the main unit, and the control panel is fixedly mounted on the supporting seat of the supporting lifting device; and the control panel is connected to the solenoid valve signal in the supporting lifting device.

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