Locking device, trolley for portable ultrasonic equipment and portable ultrasonic system

Abstract

The utility model provides a locking device, a trolley for portable ultrasonic equipment and a portable ultrasonic system.The locking device comprises a supporting frame, an unlocking assembly, a rotating assembly and a locking assembly, and the unlocking assembly, the rotating assembly and the locking assembly are arranged in the supporting frame; the unlocking assembly is connected with the locking assembly through the rotating assembly; the unlocking assembly can do linear reciprocating motion in the first direction relative to the supporting frame, the rotating assembly is driven to rotate, then the locking assembly is driven to do linear reciprocating motion in the second direction, a locking part of the locking assembly can retract or stretch out of the supporting frame, and the first direction is opposite to the second direction. According to the locking device of different structures, the locking part can retract or stretch out of the supporting frame containing cavity, then the portable ultrasonic equipment can be unlocked or locked, in addition, the locking device is simple in operation mode, the risk of misoperation can be reduced, and the structural reliability is high.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of medical apparatus and instruments, especially relates to a locking device, trolley and ultrasonic system. BACKGROUND

[0002] The locking device of the current portable ultrasonic equipment has poor structural reliability, and the locking device is prone to jamming during unlocking, and part of the locking device has complex structure and high cost. Therefore, a locking device with high reliability, smooth unlocking process, simple structure and low cost is urgently needed. SUMMARY

[0003] The technical purpose of the utility model is to provide a locking device, trolley and ultrasonic system, and at least one problem in the background art is solved.

[0004] In a first aspect, the utility model provides a locking device, which comprises a support frame, an unlocking assembly arranged in the support frame, a rotating assembly and a locking assembly; the unlocking assembly is connected through the rotating assembly and the locking assembly; the unlocking assembly can linearly reciprocate relative to the support frame along a first direction, drive the rotating assembly to rotate and then drive the locking assembly to linearly reciprocate along a second direction, so that the locking part of the locking assembly can retract into or extend out of the support frame, and the first direction and the second direction are opposite.

[0005] Further, the unlocking assembly and the locking assembly respectively comprise first and second elastic members; the first elastic member can make the unlocking assembly return to the initial position of the unlocking assembly, and the second elastic member can make the locking assembly return to the initial position of the locking assembly.

[0006] Further, the rotating assembly comprises a first fixing member, a second mounting part and a rotating member; the first fixing member is fixedly connected to the support frame; the second mounting part is arranged on the first fixing member and faces one side of the unlocking assembly; one end of the rotating member is rotatably connected to the first fixing member, and the other end of the rotating assembly is movably connected to the locking assembly.

[0007] Further, the unlocking assembly further comprises a body, a protruding part and a first mounting part; the protruding parts are respectively arranged at two ends of the body and face one side of the rotating assembly; the protruding part abuts against the rotating member of the rotating assembly; the first mounting part is arranged on the body and faces one side of the rotating assembly; one end of the first elastic member is fixedly connected to the first mounting part, and the other end of the first elastic member is fixedly connected to the second mounting part.

[0008] Further, the support frame comprises a support frame first housing and a support frame second housing; the support frame first housing comprises a first protrusion and a stopper, and the first protrusion and the stopper are arranged on the support frame first housing respectively; the support frame second housing comprises a second protrusion, and the second protrusion is arranged on the support frame second housing.

[0009] Further, the stopper comprises a sliding rail and a baffle.

[0010] Further, the locking assembly comprises a sliding piece, a locking part and a second fixing piece; the second fixing piece is fixedly connected to the support frame; the sliding piece is slidingly connected between the second fixing piece and the support frame; one end of the locking part is arranged on the sliding piece, and the other end of the locking part can retract into or extend out of the support frame.

[0011] Further, the sliding piece comprises a sliding groove, a rotating groove and a mounting groove; the sliding piece is movably connected between the second fixing piece and the support frame first housing through the sliding groove, and the sliding piece can reciprocate between the second fixing piece and the support frame first housing; the rotating piece of the rotating assembly is movably connected with the sliding piece of the locking assembly through the rotating groove; one end of the second elastic piece is fixedly connected to the third mounting portion of the mounting groove, and the other end of the second elastic piece abuts against the stopper of the support frame first housing.

[0012] Beneficial effects: the first direction and the second direction are opposite, the unlocking assembly and the locking assembly of the locking device move in opposite directions, so that the locking part retracts into or extends out of the support frame accommodating cavity, and then the unlocking or locking of the portable ultrasonic equipment can be realized. In addition, the operation mode of the locking device is simple, the risk of misoperation can be reduced, and the structural reliability is high.

[0013] In the second aspect, the utility model provides a kind of locking device, comprising: support frame, the unlocking assembly and the locking assembly of being arranged in the support frame;The unlocking assembly is connected to the locking assembly;The unlocking assembly includes body and protruding part, and the locking assembly includes sliding piece, and the protruding part is movably connected on the sliding groove of the sliding piece;The unlocking assembly can be reciprocated linearly along the second direction relative to the support frame, and then drive the locking assembly reciprocate linearly along the second direction, to make the locking part of the locking assembly retract into or extend out of the support frame.

[0014] Further, the locking assembly comprises a second elastic piece, and the second elastic piece can restore the locking assembly to the initial position of the locking assembly.

[0015] Beneficial effects: the unlocking assembly and the locking assembly of the locking device move in the same direction, so that the locking part can retract or extend out of the support frame accommodating cavity, thereby achieving unlocking or locking of the portable ultrasonic equipment. In addition, the locking device is simple to operate, can reduce the risk of misoperation, and has high structural reliability.

[0016] In a third aspect, the utility model provides a trolley for portable ultrasonic equipment, including universal wheel, base, stand and the locking device in the first aspect or the second aspect, the locking device is arranged above the stand, the base is arranged below the stand, the universal wheel is arranged below the base.

[0017] In a fourth aspect, the utility model provides a portable ultrasonic system, including: trolley, the trolley for portable ultrasonic equipment in the third aspect, portable ultrasonic equipment, portable ultrasonic equipment is assembled in the assembly groove of the support frame of the locking device, the side away from the locking part of the assembly groove has the clamping part, and the two side surfaces of relative arrangement of portable ultrasonic equipment are provided with a plurality of clamping grooves, and the locking part and the clamping part are clamped in corresponding clamping grooves respectively, so that portable ultrasonic equipment can be detachably assembled in the assembly groove.

[0018] In a fifth aspect, the utility model provides a portable ultrasonic system, including: trolley, the trolley for portable ultrasonic equipment in the third aspect, shared battery pack, the shared battery pack is detachably fixed in the assembly groove of the support frame of the locking device, to power portable ultrasonic equipment, portable ultrasonic equipment, one end of portable ultrasonic equipment is detachably fixed on the clamping part of the shared battery pack, and the other end is detachably fixed on the locking part of the locking device.

[0019] Beneficial effects: the utility model provides a locking device with different structures, the unlocking assembly and the locking assembly of the locking device move in opposite directions or the same direction, so that the locking part can retract or extend out of the support frame accommodating cavity, thereby achieving unlocking or locking of the portable ultrasonic equipment. In addition, the locking device is simple to operate, can reduce the risk of misoperation, and has high structural reliability. BRIEF DESCRIPTION OF DRAWINGS

[0020] In order to more clearly illustrate the technical scheme of the utility model embodiment, the following will briefly introduce the drawings needed to be used in the embodiment description, and obviously, the drawings in the following description are some embodiments of the utility model, and for those skilled in the art, other drawings can also be obtained according to these drawings without creating labor.

[0021] Figure 1is a structure schematic view of the locking device in the embodiment of the utility model;

[0022] Figure 2 is another structure schematic view of the locking device in the embodiment of the utility model;

[0023] Figure 3 is Figure 1 is the sectional view along A-A line in the locking device;

[0024] Figure 4 is the exploded view of the locking device in the embodiment of the utility model;

[0025] Figure 5 is the partial structure schematic view of the locking device;

[0026] Figure 6 is Figure 5 is the exploded view of the partial structure of the locking device;

[0027] Figure 7 is the structure schematic view of the back of the first shell of the support frame;

[0028] Figure 8 is the structure schematic view of the combination of the first shell of the support frame and the locking assembly;

[0029] Figure 9 is the structure schematic view of the second shell of the support frame.

[0030] Mark explanation:

[0031] Locking device 10

[0032] Unlocking assembly 100, body 110, protruding part 120, first mounting part 130, first elastic piece 140

[0033] Rotating assembly 200, first fixing piece 210, second mounting part 211, rotating piece 220

[0034] Locking assembly 300, locking part 310, sliding piece 320, sliding groove 321, rotating groove 322, mounting groove 323, third mounting part 324, second elastic piece 325, second fixing piece 330

[0035] Support frame 400, handle part 410, assembly groove 420, clamping part 421, first shell 430 of support frame, first protrusion 431, second shell 440 of support frame, second protrusion 441, resisting piece 450, baffle 451, sliding rail 452 Specific implementation

[0036] With reference to the drawings of the embodiments of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described. Obviously, the described embodiments are only some of the embodiments of the present application, but not all of the embodiments of the present application. Based on the embodiments of the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of the present application.

[0037] It should also be understood that the terms used in the present application are only for the purpose of describing specific embodiments of the present application in the description of the present application. It should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the purpose of facilitating the description of the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first" and "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features limited by "first" and "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise specifically limited.

[0038] Some embodiments of the present application will be described in detail below with reference to the accompanying drawings. The following embodiments and features in the embodiments can be combined with each other without conflict.

[0039] As shown in Figures 1-6 A locking device 10 includes a support frame 400, an unlocking assembly 100 arranged in the support frame 400, a rotating assembly 200 and a locking assembly 300, the unlocking assembly 100 is connected through the rotating assembly 200 and the locking assembly 300; the unlocking assembly 100 can linearly reciprocate relative to the support frame 400 along a first direction, drive the rotating assembly 200 to rotate and in turn drive the locking assembly 300 to linearly reciprocate along a second direction, so that the locking part 310 of the locking assembly 300 can retract or extend out of the support frame 400.

[0040] As shown in Figure 1 and Figure 3 As shown in the figure, the direction indicated by the arrow is the first direction, that is, under the action of an external force, the operator presses the unlocking assembly 100, and the moving direction of the unlocking assembly 100 is the first direction, and the second direction is just opposite to the first direction.

[0041] The first direction and the second direction are opposite, the unlocking assembly and the locking assembly of the locking device move in opposite directions, so that the locking part retracts or extends in the support frame accommodating cavity, thereby achieving unlocking or locking of the portable ultrasonic equipment, in addition, the locking device is simple in operation, can reduce the risk of misoperation, and has high structural reliability.

[0042] As shown in Figures 4-6 The unlocking assembly 100 and the locking assembly 300 respectively include a first elastic member 140 and a second elastic member 325. The first elastic member 140 can restore the unlocking assembly 100 to an initial position of the unlocking assembly 100, and the second elastic member 325 can restore the locking assembly 300 to an initial position of the locking assembly 300.

[0043] The rotating assembly 200 includes a first fixing member 210, a second mounting portion 211 and a rotating member 220. The first fixing member 210 is fixedly connected to the support frame 400. Preferably, the first fixing member 210 is detachably connected to a second protrusion 441 of a second shell 440 of the support frame by a screw. Specifically, both ends of the bottom of the first fixing member 210 are provided with through holes, the screw has external threads, the second protrusion 441 has internal threads, and the screw is screwed with the second protrusion 441 after passing through the through holes of the first fixing member 210, so that the first fixing member 210 is detachably connected to the second protrusion 441 of the second shell 440 of the support frame. In other embodiments, the first fixing member 210 can be integrally formed with the second shell 440 of the support frame. Of course, in other embodiments, the first fixing member 210 can be fixedly connected to the first shell 430 of the support frame.

[0044] The second mounting portion 211 is arranged on the first fixing member 210 and faces one side of the unlocking assembly 100. Preferably, the second mounting portion 211 and the first fixing member 210 are integrally formed. One end of the rotating member 220 is rotatably connected to the first fixing member 210, and the other end of the rotating member 220 is movably connected to the locking assembly 300. Specifically, both ends of the top of the first fixing member 210 are provided with through holes, and the rotating member 220 is also provided with corresponding through holes. The rotating member 220 is rotatably connected to the first fixing member 210 by a bolt. Preferably, the number of the rotating member 220 is two, and the two rotating members 220 are symmetrically arranged.

[0045] The unlocking assembly 100 further comprises a body 110, a protrusion 120 and a first mounting portion 130, the protrusion 120 is arranged at two ends of the body 110 respectively and faces one side of the rotating assembly 200, the protrusion 120 abuts against the rotating piece 220 of the rotating assembly 200, the first mounting portion 130 is arranged on the body 110 and faces one side of the rotating assembly 200, preferably, the first mounting portion 130 is arranged at a middle position of the body 110, one end of the first elastic piece 140 is fixedly connected to the first mounting portion 130, the other end of the first elastic piece 140 is fixedly connected to the second mounting portion 211, preferably, one end of the first elastic piece 140 is clamped to the first mounting portion 130, the other end of the first elastic piece 140 is clamped to the second mounting portion 211.

[0046] As shown in Figure 2 and Figure 4 , the support frame 400 comprises a support frame first housing 430 and a support frame second housing 440, the support frame first housing 430 and the support frame second housing 440 jointly form a containing cavity, the unlocking assembly 100, the rotating assembly 200 and the locking assembly 300 are arranged in the containing cavity respectively, in addition, the support frame 400 further comprises a handle portion 410, an assembly groove 420 and a clamping portion 421, the unlocking assembly 100 is located below the handle portion 410, the assembly groove 420 is used for assembling the shared battery pack or / and the portable ultrasonic equipment, the slot wall on one side of the assembly groove 420 is provided with a through hole for the locking portion 310 of the locking assembly 300 to extend out or retract, the clamping portion 421 is arranged at the bottom of the assembly groove 420 and is opposite and away from the locking portion 310, in other embodiments, the clamping portion 421 can also be arranged on the slot wall of the assembly groove 420 on the side opposite to the locking portion 310.

[0047] As shown in Figure 7 and Figure 9 , the support frame first housing 430 comprises a first protrusion 431 and a blocking piece 450, the first protrusion 431 and the blocking piece 450 are arranged on the support frame first housing 430 respectively, preferably, the first protrusion 431 and the blocking piece 450 are fixedly arranged on the support frame first housing 430 respectively, for example, the first protrusion 431 and the blocking piece 450 are integrally formed with the support frame first housing 430 respectively; the support frame second housing 440 comprises a second protrusion 441, the second protrusion 441 is arranged on the support frame second housing 440, preferably, the second protrusion 441 is fixedly arranged on the support frame second housing 440, for example, the second protrusion 441 is integrally formed with the support frame second housing 440. Of course, in other embodiments, the first protrusion 431 and the blocking piece 450 can be arranged on the support frame second housing 440 respectively, and the second protrusion 441 can be arranged on the support frame first housing 430.

[0048] As shown in Figure 7As shown, the stop 450 includes a sliding track 452 and a baffle 451. The overall shape of the stop 450 is similar to an inverted U-shape with the opening facing the second direction.

[0049] like Figure 5 and Figure 6 As shown, the locking assembly 300 includes a sliding member 320, a locking part 310, and a second fixing member 330. The sliding member 320 includes a sliding groove 321, a rotating groove 322, and a mounting groove 323. The second fixing member 330 is fixedly connected to the support frame 400, and the sliding member 320 is slidably connected between the second fixing member 330 and the support frame 400. Specifically, the sliding member 320 is slidably connected between the second fixing member 330 and the first housing 430 of the support frame. The second fixing member 330 has a through hole, and the first protrusion 431 of the first housing 430 of the support frame has an internal thread. The screw has an external thread and passes through the through hole of the second fixing member 330 in sequence. The sliding groove 321 of the sliding member 320 is detachably connected to the first protrusion 431 of the first housing 430 of the support frame. Preferably, the second fixing member 330 has two through holes, two first protrusions 431, and two sliding grooves 321. Of course, in other embodiments, the slider 320 may also be slidably connected between the second fixing member 330 and the second housing 440 of the support frame.

[0050] One end of the locking part 310 is disposed on the sliding member 320, and the other end can retract or extend from the support frame 400. Specifically, the locking part 310 and the sliding member 320 are integrally formed, and the locking part 310 can retract or extend from the receiving cavity of the support frame 400.

[0051] The sliding member 320 is movably connected between the second fixed member 330 and the first housing 430 of the support frame via the sliding groove 321. The sliding member 320 can reciprocate between the second fixed member 330 and the first housing 430 of the support frame via the sliding groove 321. Of course, in other embodiments, the sliding member 320 can also be movably connected between the second fixed member 330 and the second housing 440 of the support frame via the sliding groove 321. The sliding member 320 can reciprocate between the second fixed member 330 and the second housing 440 of the support frame via the sliding groove 321.

[0052] The rotating piece 220 of the rotating assembly 200 is movably connected with the sliding piece 320 of the locking assembly 300 through the rotating groove 322; the third mounting portion 324 is arranged on the groove wall at one side of the mounting groove 323, preferably, the mounting groove 323 is a structure concave to the first shell 430 of the support frame or a structure convex to the second shell 440 of the support frame, the third mounting portion 324 is integrally formed with the groove wall at one side of the mounting groove 323, one end of the second elastic member 325 is fixedly connected on the third mounting portion 324 of the mounting groove 323, for example, one end of the second elastic member 325 is clamped on the third mounting portion 324 of the mounting groove 323, the other end of the second elastic member 325 abuts against the stop piece 450 of the first shell 430 of the support frame, specifically, as shown in Figure 8 FIG. 6, the mounting groove 323 of the sliding piece 320 faces the first shell 430 of the support frame, the mounting groove 323, the first shell 430 of the support frame and the baffle 451 of the stop piece 450 jointly form a containing space of the second elastic member 325. The mounting groove 323 is movable along the sliding track 452 of the stop piece 450, and the sliding track 452 has a guiding effect on the movement of the mounting groove 323.

[0053] Working principle of the locking device 10:

[0054] Firstly, press the unlocking assembly 100 located below the handle portion 410, under the action of an external force, the body 110 and the protruding portion 120 of the unlocking assembly 100 will move together in the first direction, and the first elastic member 140 will be compressed, then the protruding portion 120 of the unlocking assembly 100 will push one end of the rotating piece 220 of the rotating assembly 200 to move in the first direction first, and then rotate in the counterclockwise direction, and then the other end of the rotating piece 220 will move in the second direction first around the first fixed piece 210 of the rotating assembly 200, and then rotate in the counterclockwise direction, and then drive the sliding piece 320 of the locking assembly 300 to move in the second direction, so that the locking portion 310 is retracted into the containing cavity of the support frame 400, and the second elastic member 325 will be compressed; when the external force is removed, the first elastic member 140 and the second elastic member 325 will respectively return to the state before being compressed, that is, under the action of the second elastic member 325, the sliding piece 320 will return to the initial position of the sliding piece 320, so that the locking portion 310 extends out of the containing cavity of the support frame 400, that is, under the action of the first elastic member 140, the unlocking assembly 100 will also return to the initial position of the unlocking assembly 100.

[0055] In another embodiment, a locking device 10 comprises a support frame 400, an unlocking assembly 100 arranged in the support frame 400, and a locking assembly 300. The unlocking assembly 100 is connected to the locking assembly 300. The unlocking assembly 100 comprises a body 110 and a protruding part 120. The locking assembly 300 comprises a sliding part 320. The protruding part 120 is movably connected to a sliding groove 321 of the sliding part 320. Preferably, the protruding part 120 has a hook part movably connected to the sliding groove 321, so that the protruding part 120 is movably connected to the sliding groove 321. The unlocking assembly 100 is linearly reciprocated relative to the support frame 400 in a second direction, thereby driving the locking assembly 300 to linearly reciprocate in the second direction, so that a locking part 310 of the locking assembly 300 can retract into or extend out of the support frame 400. The locking assembly 300 comprises a second elastic part 325, which can drive the locking assembly 300 to return to an initial position of the locking assembly 300. Specifically, under the action of an external force, the unlocking assembly 100 is pulled in the second direction, and the unlocking assembly 100 is linearly moved in the second direction. The unlocking assembly 100 drives the sliding part 320 to linearly move in the second direction through the protruding part 120, thereby driving the locking assembly 300 to linearly move in the second direction, so that the locking part 310 retracts into a receiving cavity of the support frame 400, and the second elastic part 325 is compressed. When the external force is removed, the second elastic part 325 returns to the state before being compressed. Under the action of the second elastic part 325, the sliding part 320 returns to the initial position of the sliding part 320, so that the locking part 310 extends out of the receiving cavity of the support frame 400.

[0056] The unlocking assembly and the locking assembly of the locking device move in the same direction, so that the locking part can retract into or extend out of the receiving cavity of the support frame, thereby achieving unlocking or locking of the portable ultrasonic equipment. In addition, the locking device has a simple operation mode, can reduce the risk of misoperation, and has high structural reliability.

[0057] A trolley for portable ultrasonic equipment comprises the above-mentioned locking device 10, a stand, a base, and universal wheels. The locking device 10 is arranged above the stand. The base is arranged below the stand. The universal wheels are arranged below the base. Preferably, the stand can be telescoped up and down to adjust the height to meet different needs. The universal wheels are provided with a brake assembly, which can control the movement of the universal wheels.

[0058] A portable ultrasonic system comprises the trolley for portable ultrasonic equipment and the portable ultrasonic equipment, the portable ultrasonic equipment is assembled in the assembling groove 420 of the support frame 400 of the locking device 10, the assembling groove 420 is provided with the clamping part 421 away from one side of the locking part 310, preferably, the bottom of the assembling groove 420 is provided with the clamping part 421 away from one side of the locking part 310, the number of the clamping part 421 is two, the portable ultrasonic equipment is provided with a plurality of clamping grooves on the opposite sides, the locking part 310 and the clamping part 421 are clamped in the corresponding clamping grooves, so that the portable ultrasonic equipment can be detachably assembled in the assembling groove 420.

[0059] A portable ultrasonic system comprises the trolley for portable ultrasonic equipment, the shared battery pack and the portable ultrasonic equipment. The shared battery pack is detachably fixed in the assembling groove 420 of the support frame 400 of the locking device 10, used to power the portable ultrasonic equipment; one end of the portable ultrasonic equipment is detachably fixed on the clamping part of the shared battery pack, and the other end is detachably fixed on the locking part 310 of the locking device.

Claims

1. A locking device (10) characterized by, The utility model relates to a support frame (400), set up in the support frame (400) in the unlocking assembly (100), rotating assembly (200) and lock joint assembly (300) are provided. The unlocking assembly (100) is connected through the rotating assembly (200) and the lock joint assembly (300). The unlocking assembly (100) can be linear reciprocatingly moved along a first direction relative to the support frame (400), drive the rotating assembly (200) to rotate and then drive the lock joint assembly (300) to linear reciprocatingly move along a second direction, so that the lock joint of the lock joint assembly (300) (310) can retract or extend the support frame (400), and the first direction and the second direction are opposite. The unlocking assembly (100) and the lock joint assembly (300) respectively include first elastic member (140) and second elastic member (325), the first elastic member (140) can make the unlocking assembly (100) return to the initial position of unlocking assembly (100), and the second elastic member (325) can make the lock joint assembly (300) return to the initial position of lock joint assembly (300).

2. A locking device (10) according to claim 1, characterized in that The rotating assembly (200) includes first fixed part (210), second mounting portion (211) and rotating part (220).

3. A locking device (10) according to claim 2, characterized in that The first fixed part (210) is fixedly connected to the support frame (400). The second mounting portion (211) is arranged on the first fixed part (210) and faces the side of the unlocking assembly (100). One end of the rotating part (220) is rotatably connected to the first fixed part (210), and the other end of the rotating part (220) is movably connected to the lock joint assembly (300). The unlocking assembly (100) further includes body (110), protruding part (120) and first mounting portion (130).

4. A locking device (10) according to claim 3, characterized in that The protruding part (120) is arranged on both ends of the body (110) and faces the side of the rotating assembly (200); the protruding part (120) abuts against the rotating part (220) of the rotating assembly (200); The first mounting portion (130) is arranged on the body (110) and faces the side of the rotating assembly (200); One end of the first elastic member (140) is fixedly connected to the first mounting portion (130), and the other end of the first elastic member (140) is fixedly connected to the second mounting portion (211). The support frame (400) includes support frame first shell (430) and support frame second shell (440).

5. A locking device (10) according to claim 2, characterized in that The support frame first shell (430) includes first protrusion (431) and stop piece (450), and the first protrusion (431) and the stop piece (450) are arranged on the support frame first shell (430) respectively. The support frame second shell (440) includes second protrusion (441), and the second protrusion (441) is arranged on the support frame second shell (440). The stop piece (450) includes sliding rail (452) and baffle (451).

6. A locking device (10) according to claim 5, characterized in that The lock joint assembly (300) includes sliding part (320), lock joint (310) and second fixed part (330).

7. A locking device (10) according to claim 5, characterized in that ​ The second fixing part (330) is fixedly connected to the support frame (400); The sliding part (320) is slidingly connected between the second fixing part (330) and the support frame (400); One end of the locking part (310) is arranged on the sliding part (320), and the other end can retract or extend out of the support frame (400).

8. A locking device (10) according to claim 7, characterized in that The sliding part (320) comprises a sliding groove (321), a rotating groove (322), a mounting groove (323), and a third mounting part (324); The sliding part (320) is movably connected between the second fixing part (330) and the support frame first housing (430) through the sliding groove (321), and the sliding part (320) can reciprocate between the second fixing part (330) and the support frame first housing (430); The rotating part (220) of the rotating assembly (200) is movably connected with the sliding part (320) of the locking assembly (300) through the rotating groove (322); One end of the second elastic part (325) is fixedly connected to the third mounting part (324) of the mounting groove (323), and the other end of the second elastic part (325) abuts against the stop part (450) of the support frame first housing (430).

9. A locking device (10) characterized by It comprises: a support frame (400), an unlocking assembly (100) and a locking assembly (300) arranged in the support frame (400); The unlocking assembly (100) is connected to the locking assembly (300); The unlocking assembly (100) comprises a body (110) and a protruding part (120), and the locking assembly (300) comprises a sliding part (320), and the protruding part (120) is movably connected to the sliding groove (321) of the sliding part (320); The unlocking assembly (100) can linearly reciprocate relative to the support frame (400) in a second direction, thereby driving the locking assembly (300) to linearly reciprocate in the second direction, so that the locking part (310) of the locking assembly (300) can retract or extend out of the support frame (400).

10. A locking device (10) according to claim 9, characterized in that The locking assembly (300) comprises a second elastic part (325), which can restore the locking assembly (300) to the initial position of the locking assembly (300).

11. A trolley for a portable ultrasound apparatus, characterized in that It comprises a universal wheel, a base, a stand, and the locking device (10) according to any one of claims 1-10; The locking device (10) is arranged above the stand, the base is arranged below the stand, and the universal wheel is arranged below the base.

12. A portable ultrasound system characterized by It comprises: a trolley, a trolley for portable ultrasonic equipment according to claim 11; a portable ultrasonic equipment, the portable ultrasonic equipment is assembled in the assembly groove (420) of the support frame (400) of the locking device (10). The assembly slot (420) has a clamping portion (421) on the side away from the locking portion (310), and the portable ultrasonic device is provided with a plurality of clamping slots on the opposite sides, and the locking portion (310) and the clamping portion (421) are clamped in the corresponding clamping slots, so that the portable ultrasonic device can be detachably assembled in the assembly slot (420).

13. A portable ultrasound system characterized by It comprises: A trolley for portable ultrasonic equipment according to claim 11; A shared battery pack which is detachably fixed in the assembly slot (420) of the support frame (400) of the locking device (10) to supply power to the portable ultrasonic equipment; A portable ultrasonic equipment which is detachably fixed on the clamping portion of the shared battery pack at one end and detachably fixed on the locking portion (310) of the locking device (10) at the other end.

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