X-ray bone densitometer

Abstract

The present invention relates to the technical field of surgical diagnostic equipment, and in particular to an X-ray bone densitometer, comprising an X-ray bone densitometer body, and also comprising: a supporting mechanism, which comprises a shell arranged on the X-ray bone densitometer body, and a rotating member rotatably arranged in the shell, the rotating member is provided with a rotating wheel, and also comprises a one-way locking member arranged on the shell, one end of the rotating member is provided with a plug-in member; a limiting mechanism, which is arranged on the X-ray bone densitometer body; a winding mechanism, which is arranged between the limiting mechanism and the plug-in member; a driving member, which is used to drive the rotating member to rotate. The present invention controls the rotating member to rotate by the driving member, and when the rotating member rotates, the plug-in member is driven to rotate, thereby causing the winding mechanism to rotate, and a plastic protective film is wound and wound. By winding and rolling the used plastic protective film, the plastic protective film can be replaced, thereby improving the efficiency of laying the protective film.

Description

Technical Field

[0001] The invention relates to the technical field of surgical diagnostic equipment, in particular to an X-ray bone densitometer. Background Art

[0002] The dual-energy X-ray bone densitometer consists of a radiation source, a detector, a moving mechanism, a support platform and other components. When performing bone density testing on a patient, the patient is required to lie flat on the support platform, and the moving mechanism drives the detector and the radiation source to move to perform bone density testing on the patient.

[0003] In order to ensure the cleanliness of the equipment and the safety of the patients, a plastic protective film is usually laid on the support platform for people to lie on. On the one hand, it can protect the surface of the equipment, and on the other hand, it can avoid contamination on the support platform, thereby preventing the spread of bacteria. However, due to the low efficiency of manually applying or laying the protective film, and the high frequency of use of the equipment, frequent replacement will increase the waiting time of patients, but not replacing it for a long time is not conducive to the cleanliness of the equipment and the isolation of the spread of diseases. For this reason, an X-ray bone densitometer is proposed. Summary of the invention

[0004] In view of the problem of low efficiency of manually covering or laying protective films in the above or prior art, the present invention is proposed.

[0005] Therefore, an object of the present invention is to provide an X-ray bone densitometer.

[0006] In order to solve the above technical problems, the present invention provides the following technical solutions: an X-ray bone densitometer, comprising an X-ray bone densitometer main body, and also comprising a supporting mechanism, which comprises a shell arranged on the X-ray bone densitometer main body, and a rotating member rotatably arranged in the shell, the rotating member is provided with a rotating wheel, and also comprises a one-way locking member arranged on the shell, and a plug-in member is provided at one end of the rotating member; a limiting mechanism, which is arranged on the X-ray bone densitometer main body; a winding mechanism, which is arranged between the limiting mechanism and the plug-in member; and a driving member, which is used to drive the rotating member to rotate.

[0007] As a preferred embodiment of the X-ray bone densitometer of the present invention, the rotating member includes an outer sleeve, and an inner sleeve slidably arranged in the outer sleeve, and a No. 1 spring is arranged between the outer sleeve and the inner sleeve; a connecting ring is arranged on the rotating wheel, and an outer connecting belt and an inner connecting belt are arranged on the connecting ring, the outer connecting belt is connected to the outer sleeve, and the inner connecting belt is connected to the inner sleeve.

[0008] As a preferred embodiment of the X-ray bone densitometer of the present invention, the one-way locking member includes a fixed ring and a movable groove arranged in the fixed ring, a latch tooth is rotatably connected in the movable groove, a limiting groove is arranged in the fixed ring, and a No. 2 spring is arranged in the limiting groove; the connector includes a connecting disk arranged at the end of the inner sleeve, and a latch groove arranged on the connecting disk, and a shaft rod is arranged at the end of the connecting disk; the winding mechanism includes a winding roller and a socket arranged at the end of the winding roller.

[0009] As a preferred solution of the X-ray bone densitometer of the present invention, wherein: the shell is provided with an outer sleeve and an inner sleeve; the inner wall of the rotating wheel and the outer wall of the outer sleeve and the outer wall of the inner sleeve are rotationally connected; the fixing ring is fixed in the inner sleeve.

[0010] As a preferred solution of the X-ray bone densitometer of the present invention, the support mechanism further comprises a one-way clamping member arranged in the outer sleeve; the locking direction of the one-way locking member is opposite to the locking direction of the one-way clamping member.

[0011] As a preferred solution of the X-ray bone densitometer of the present invention, the one-way clamping component includes a fixed plate arranged in the outer sleeve and a contact plate arranged at the end of the outer sleeve, the fixed plate is provided with an inclined block, and the contact plate is provided with an inclined groove.

[0012] As a preferred solution of the X-ray bone densitometer of the present invention, a connecting shaft is arranged inside the inner sleeve, and a pumping rod is rotatably connected to the outer wall of the connecting shaft.

[0013] As a preferred solution of the X-ray bone densitometer of the present invention, wherein: the outer wall of the rotating wheel is provided with a tooth block; the output shaft of the driving member is provided with a gear; the gear and the tooth block are meshingly connected.

[0014] As a preferred solution of the X-ray bone densitometer of the present invention, it further comprises a transmission belt arranged on the outer wall of the rotating wheel.

[0015] As a preferred solution of the X-ray bone densitometer of the present invention, the limiting mechanism includes a fixed seat arranged on the main body of the X-ray bone densitometer, and a support shaft rotatably arranged on the fixed seat; a side plate is provided at the end of the winding roller, a claw is provided at one end of the side plate, and the socket is provided on the side plate.

[0016] The beneficial effects of the X-ray bone densitometer of the present invention are as follows: the present invention controls the rotation of the rotating part through the driving part, and the rotating part drives the connector to rotate when rotating, thereby causing the winding mechanism to rotate, and the plastic protective film is wound and wound. By winding and rolling the used plastic protective film, the plastic protective film can be replaced, thereby improving the efficiency of laying the protective film, so as to protect the cleanliness of the surface of the X-ray bone densitometer. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0018] Figure 1 Schematic diagram of the overall structure of the X-ray bone densitometer.

[0019] Figure 2 for Figure 1 Enlarged view of point A in the middle.

[0020] Figure 3 It is a schematic diagram of the internal structure of the shell of the X-ray bone densitometer.

[0021] Figure 4 This is a schematic diagram of the connection structure of the gears and gear blocks of the X-ray bone densitometer.

[0022] Figure 5 The figure is a schematic diagram of the connection structure of the reeling mechanism and the limiting mechanism of the X-ray bone densitometer.

[0023] Figure 6 It is a schematic diagram of the structure of the shaft and socket of the X-ray bone densitometer.

[0024] Figure 7 It is a schematic diagram of the structure of the rotating part of the X-ray bone densitometer.

[0025] Figure 8 It is a structural schematic diagram of the inclined slot and the abutment plate of the X-ray bone densitometer.

[0026] Fig. 9 This is a schematic diagram of the internal structure of the one-way locking component of the X-ray bone densitometer.

[0027] Fig.10 for Fig. 9 Enlarged view of point B in the middle.

[0028] Fig.11 It is a schematic diagram of the connection structure of the fixed plate and the inclined block of the X-ray bone densitometer.

[0029] In the figure: 1. X-ray bone densitometer body; 2. support mechanism; 21. shell; 211. outer sleeve; 212. inner sleeve; 22. rotating member; 221. outer sleeve; 222. inner sleeve; 223. spring No. 1; 224. connecting shaft; 225. draw rod; 23. rotating wheel; 231. connecting ring; 232. outer connecting belt; 233. inner connecting belt; 234. tooth block; 24. one-way locking member; 241. fixing ring; 242. movable groove; 243 , latch teeth; 244, limiting groove; 245, No. 2 spring; 25, plug-in connector; 251, connecting plate; 252, latch groove; 253, shaft; 26, one-way latch; 261, fixed plate; 262, resistance plate; 263, inclined block; 264, inclined groove; 3, limiting mechanism; 31, fixed seat; 32, supporting shaft; 4, winding mechanism; 41, winding roller; 42, side plate; 43, latch claw; 44, socket; 5, driving member; 51, gear; 6, transmission belt. DETAILED DESCRIPTION

[0030] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0031] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0032] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive with other embodiments.

[0033] Example 1, reference Figures 1 to 10 , is the first embodiment of the present invention, which provides an X-ray bone densitometer, including an X-ray bone densitometer body 1, and also includes a support mechanism 2, which includes a shell 21 arranged on the X-ray bone densitometer body 1, and a rotating member 22 rotatably arranged in the shell 21, the rotating member 22 is provided with a rotating wheel 23, and also includes a one-way locking member 24 arranged on the shell 21, and a connector 25 is provided at one end of the rotating member 22; wherein the X-ray bone densitometer body 1 is used to detect the bone density of the patient.

[0034] The limiting mechanism 3 is arranged on the X-ray bone densitometer body 1; the winding mechanism 4 is arranged between the limiting mechanism 3 and the connector 25; the winding mechanism 4 is supported by the limiting mechanism 3 and the connector 25, and the winding mechanism 4 is used to roll up the plastic protective film.

[0035] The driving member 5 is used to drive the rotating member 22 to rotate.

[0036] Further, see Figure 1 and Figure 3 The front and rear ends of the support platform of the X-ray bone densitometer body 1 are provided with a limit mechanism 3 and a winding mechanism 4. Two groups of rotating parts 22, rotating wheels 23, one-way locking parts 24, and plug-in parts 25 are arranged in a horizontal array in the shell 21. The plastic protective film is first wound around the outside of the winding mechanism 4 at one end, and the other end of the plastic protective film is connected to the other winding mechanism 4. Only one driving part 5 is provided, and only the rotating part 22 on one side cooperates with the driving part 5.

[0037] During use, when the patient needs to replace the plastic protective film after the bone density test, the driving member 5 controls the rotating member 22 to rotate. When the rotating member 22 rotates, it drives the connector 25 to rotate, thereby causing the reeling mechanism 4 at one end to rotate, and the reeling mechanism 4 at the other end will also rotate accordingly due to the release of the plastic protective film, thereby reeling the plastic protective film. By reeling the used plastic protective film and then releasing the new plastic protective film through the reeling mechanism 4 at the other end, the plastic protective film can be replaced. In addition, due to the setting of the one-way locking member 24, the protective film can only be reeled toward one side, that is, only the used plastic protective film can be reeled. When the patient lies on the X-ray bone densitometer body 1, the plastic protective film may move. Therefore, there may be a situation where the pulling and winding mechanism 4 rotates, and the one-way locking member 24 allows the plastic protective film to only be rolled up and cannot be released. Therefore, the patient will not pull out the used and dirty plastic protective film when moving, thereby avoiding the contaminated protective film from being used again. At the same time, since the one-way locking member 24 can only be locked in one direction, usually, when the patient lies on the X-ray bone densitometer body 1, the direction of the head and the direction of the feet are generally fixed. Therefore, the displacement of the protective film during the patient lying on the body is mostly in a consistent state, and the protective film will be pulled to one side. Keeping the direction in which the one-way locking member 24 can release the protective film consistent with the direction in which the protective film is often displaced can also play a buffering role to avoid damage to the protective film after repeated use.

[0038] Specifically, the limiting mechanism 3 includes a fixing seat 31 disposed on the X-ray bone densitometer body 1, and a supporting shaft 32 rotatably disposed on the fixing seat 31; Figure 5The fixed seat 31 and the support shaft 32 are rotatably connected via a bearing.

[0039] Among them, the rotating part 22 includes an outer sleeve 221, and an inner sleeve 222 slidably arranged in the outer sleeve 221, and a spring 223 is arranged between the outer sleeve 221 and the inner sleeve 222; through the elastic force of the spring 223, the outer sleeve 221 and the inner sleeve 222 can have a tendency to move away from each other.

[0040] A connecting ring 231 is provided on the rotating wheel 23, and an outer connecting belt 232 and an inner connecting belt 233 are provided on the connecting ring 231. The outer connecting belt 232 is connected to the outer sleeve 221, and the inner connecting belt 233 is connected to the inner sleeve 222. The connecting ring 231 is arranged in the middle of the inner wall of the rotating wheel 23, and the surface of the connecting ring 231 is provided with a plurality of outer connecting belts 232 and inner connecting belts 233 in a circular array. The outer connecting belt 232 and the inner connecting belt 233 are both made of slightly deformable elastic rubber belts to extend their service life. The ends of the outer sleeve 221 and the inner sleeve 222 are provided with raised edges for connecting the outer connecting belt 232 and the inner connecting belt 233.

[0041] Preferably, the one-way locking member 24 includes a fixed ring 241, and a movable groove 242 provided in the fixed ring 241, a latch tooth 243 is rotatably connected in the movable groove 242, a limiting groove 244 is provided in the fixed ring 241, and a No. 2 spring 245 is provided in the limiting groove 244; the latch tooth 243 can be retracted into the movable groove 242 by deflection, and the elastic force of the No. 2 spring 245 can make the latch tooth 243 have a movement tendency to rotate out of the movable groove 242.

[0042] The connector 25 includes a connecting disk 251 arranged at the end of the inner sleeve 222, and a slot 252 arranged on the connecting disk 251, and a shaft 253 is arranged at the end of the connecting disk 251; the connecting disk 251 is fixedly arranged at the end of the inner sleeve 222, and a plurality of slots 252 are arranged on the outer wall of the connecting disk 251, and the cross-section of the shaft 253 is triangular, square, or elliptical; the winding mechanism 4 includes a winding roller 41, and a socket 44 arranged at the end of the winding roller 41, and the cross-sectional shape of the shaft 253 matches the socket 44, and when the shaft 253 rotates, it can drive the winding roller 41 to rotate together.

[0043] A side plate 42 is provided at the end of the winding roller 41, a claw 43 is provided at one end of the side plate 42, and a socket 44 is provided on the side plate 42. The winding roller 41 is used to wind the plastic protective film, and three claws 43 arranged in a circular array are provided at one end of the side plate 42. The side plate 42 and one end of the winding roller 41 are in contact with each other, and the winding roller 41 is clamped by the claw 43, which cooperates with the socket 44 on the side plate 42 to facilitate fixing the winding roller 41.

[0044] It should be noted that the housing 21 is provided with an outer sleeve 211 and an inner sleeve 212; the inner wall of the rotating wheel 23 is rotatably connected to the outer wall of the outer sleeve 211 and the outer wall of the inner sleeve 212; Figure 7 The rotating wheel 23 is rotatably connected to the outer sleeve 211 and the inner sleeve 212 through the bearing.

[0045] It should be noted that the fixing ring 241 is fixed in the inner sleeve 212; the outer wall of the rotating wheel 23 is provided with a tooth block 234; the output shaft of the driving member 5 is provided with a gear 51; the gear 51 and the tooth block 234 are meshingly connected, and the driving member 5 is a driving motor, and the operation of the driving motor can control the rotation of the gear 51, thereby causing the rotating wheel 23 to rotate.

[0046] When in use, the plastic protective film is completely wrapped around the winding roller 41 at one end of the X-ray bone densitometer body 1, the starting end of the plastic protective film is connected to the winding roller 41 at the other end of the X-ray bone densitometer body 1, and the end of the winding roller 41 is inserted into the claw 43, and the side plate 42 and the winding roller 41 are connected through the claw 43 to complete the preliminary preparation work, and then the two ends of the winding roller 41 are respectively connected to the support shaft 32 and the shaft rod 253 through the socket 44.

[0047] After use, when the plastic protective film needs to be replaced by the patient, the gear 51 is rotated through the driving member 5, and the gear 51 drives the rotating wheel 23 to rotate. When the rotating wheel 23 rotates, the internal rotating member 22 is pulled to rotate through the external connecting belt 232 and the internal connecting belt 233, thereby causing the shaft 253 on the rotating member 22 to rotate, driving the winding roller 41 to wind up, rolling up the used part, and the winding roller 41 at the other end releases the clean plastic protective film.

[0048] When the patient lies on the X-ray bone densitometer body 1, the force is not stable, so the plastic protective film will be pulled. Due to the setting of the one-way locking member 24, refer to Fig.10 The elastic force of the No. 2 spring 245 will push the latch tooth 243 out of the movable groove 242 and into the latch groove 252. When the latch tooth 243 is inserted into the latch groove 252, the connecting disk 251 can only rotate in the direction that can push the latch tooth 243 into the movable groove 242. When rotating in the opposite direction, the connecting disk 251 cannot rotate because the latch tooth 243 presses against the latch groove 252. The winding roller 41 at one end of the dirty plastic protective film is locked by the one-way locking member 24, so that it cannot release the used plastic protective film.

[0049] Example 2, reference Figure 1 to Figure 11 , which is the second embodiment of the present invention. Different from the previous embodiment, the support mechanism 2 also includes a one-way clamping member 26 arranged in the outer sleeve 211; the locking direction of the one-way locking member 24 is opposite to the locking direction of the one-way clamping member 26.

[0050] Specifically, the one-way clamping member 26 includes a fixed disk 261 disposed in the outer sleeve 211, and a contact disk 262 disposed at the end of the outer sleeve 221. The fixed disk 261 is provided with an inclined block 263, and the contact disk 262 is provided with an inclined groove 264. In this embodiment, the fixed disk 261 is provided with a plurality of inclined blocks 263 distributed in a circumference, and the inclined grooves 264 and the inclined blocks 263 on the contact disk 262 are arranged in a one-to-one correspondence. Figure 8 and Fig.11 When the rotation direction causes the inclined block 263 to slide into the inclined groove 264, locking in this direction can be achieved through the mutual interference between the inclined block 263 and the inclined groove 264.

[0051] During use, the plastic protective film will be pulled by the patient lying on the X-ray bone densitometer body 1, and the pulling force is not stable. When the force is small, the plastic protective film will not be damaged. If the winding roller 41 rotates to release the clean plastic protective film, it will cause waste. Therefore, the inner sleeve 222 is locked again by the one-way clamp 26. Due to the elastic force of the No. 1 spring 223, the connecting disk 251 will remain inserted in the fixing ring 241, and the fixing disk 261 will maintain the contact state with the contact disk 262. Therefore, through the setting of the one-way clamp 26, it can be avoided that the clean plastic protective film is released when the force is small, and when the force is large, due to the direction of the force The clean protective film will be released, so the inner sleeve 222 can rotate. The inner sleeve 222 rotates and pulls the rotating wheel 23 to rotate through the inner connecting belt 233. The rotating wheel 23 pulls the outer connecting belt 232. Since the outer sleeve 221 is in a locked state, the outer connecting belt 232 and the inner connecting belt 233 will be tilted. After tilting, the outer connecting belt 232 and the inner connecting belt 233 will be shortened in the axial direction of the rotating part 22, so that the No. 1 spring 223 will be compressed, and then the inner sleeve 222 and the outer sleeve 221 will approach each other until the inclined block 263 is disengaged from the inclined groove 264. At this time, the clean plastic protective film can be released to avoid the rupture of the plastic protective film.

[0052] The advantage of using the one-way locking member 24 to lock the winding roller 41 so that the winding roller 41 can only wind up the used plastic protective film is that the used plastic protective film can be prevented from being released during the pulling process of the plastic protective film. The advantage of using the one-way clamping member 26 to lock the winding roller 41 so that the winding roller 41 will not release the clean plastic protective film when the pulling force is small is that the one-way clamping formed between the inclined block 263 and the inclined groove 264 can be achieved by a smaller sliding stroke of the outer sleeve 221. Therefore, when the No. 1 spring 223 compresses the inner sleeve 222 and the outer sleeve 221 to approach each other, the inclined block 263 and the inclined groove 264 will first disengage from the clamping relationship, thereby being able to release the clean plastic protective film.

[0053] When the rotating wheel 23 is controlled to rotate by the driving member 5, due to the rotation of the rotating wheel 23, the rotating wheel 23 will first rotate relative to the outer sleeve 221, thereby causing the outer connecting belt 232 to tilt. After the outer connecting belt 232 tilts, it pulls the outer sleeve 221 to slide and compress the No. 1 spring 223, causing the inclined block 263 and the inclined groove 264 to disengage from the clamping connection. Therefore, the one-way clamping member 26 will not hinder the driving of the driving member 5, thereby completing the replacement of the plastic protective film.

[0054] Furthermore, a connecting shaft 224 is provided in the inner sleeve 222 , and a pumping rod 225 is rotatably connected to the outer wall of the connecting shaft 224 .

[0055] When in use, by pulling the withdrawal rod 225, the connecting shaft 224 pulls the inner sleeve 222 to compress the No. 1 spring 223, and the connecting disk 251 is pulled out from the fixing ring 241, that is, after the shaft rod 253 is pulled out from the socket 44, the shaft rod 253 and the socket 44 are separated, and then the detached winding roller 41 is tilted, and the socket 44 and the support shaft 32 at the other end of the winding roller 41 are pulled out, and the disassembly of the winding roller 41 is completed, which is convenient for replacing the winding roller 41. When installing, first install the end where the support shaft 32 is located, and then swing the winding roller 41 into a horizontal state, align the socket 44 and the shaft rod 253, and after releasing the withdrawal rod 225, under the elastic force of the No. 1 spring 223, the shaft rod 253 is inserted into the socket 44 to form a connection.

[0056] The rest of the structure is the same as that of Example 1.

[0057] Example 3, reference Figure 1 to Figure 11 , which is the third embodiment of the present invention, is different from the previous embodiment in that it also includes a transmission belt 6 arranged on the outer wall of the rotating wheel 23. After the rotating wheels 23 at both ends of the X-ray bone densitometer body 1 are connected by the transmission belt 6, the rotation of the rotating member 22 can be synchronously controlled, so as to facilitate the retraction and extension of the plastic protective film.

[0058] The rest of the structure is the same as that of Example 2.

[0059] When the medical staff controls the driving member 5 to rewind the plastic protective film, there may be an over-rewinding situation. In order to avoid wasting the plastic protective film, the driving member 5 can be driven in the reverse direction to make the rotating wheel 23 rotate in the reverse direction. When the rotating wheel 23 rotates in the reverse direction, since the one-way locking member 24 is in a locked state and the one-way clamping member 26 is in an unlocked state, relative rotation will occur between the rotating wheel 23 and the inner sleeve 222, and the inner connecting belt 233 will be tilted. Since the inner connecting belt 233 is tilted, the axial length of the inner sleeve 222 is shortened, so that the inner sleeve 222 will compress the No. 1 spring 223, so that the connecting disk 251 slides from the fixing ring 241, and finally drives the shaft rod 253 to rotate in the reverse direction to release the over-rewinding protective film. That is, the rewinding of the plastic protective film can be arbitrarily controlled by the driving member 5, and when the plastic protective film is subjected to force, the dirty plastic protective film cannot be released, which is convenient for medical staff to accurately control and can also avoid the release of dirty protective film caused by patient operation.

[0060] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. An X-ray bone densitometer, comprising an X-ray bone densitometer body (1), characterized in that: Also includes, A support mechanism (2), comprising a housing (21) disposed on the X-ray bone densitometer body (1), and a rotating member (22) rotatably disposed in the housing (21), wherein the rotating member (22) is provided with a rotating wheel (23), and further comprising a one-way locking member (24) disposed on the housing (21), wherein one end of the rotating member (22) is provided with a plug-in member (25); A limiting mechanism (3) disposed on the X-ray bone densitometer body (1); A winding mechanism (4), which is arranged between the limiting mechanism (3) and the plug-in connector (25); A driving member (5) for driving the rotating member (22) to rotate; The rotating member (22) comprises an outer sleeve (221) and an inner sleeve (222) slidably disposed in the outer sleeve (221), and a first spring (223) is disposed between the outer sleeve (221) and the inner sleeve (222); The rotating wheel (23) is provided with a connecting ring (231), and the connecting ring (231) is provided with an outer connecting belt (232) and an inner connecting belt (233), the outer connecting belt (232) is connected to the outer sleeve (221), and the inner connecting belt (233) is connected to the inner sleeve (222).

2. The X-ray bone densitometer according to claim 1, characterized in that: The one-way locking member (24) comprises a fixed ring (241) and a movable groove (242) provided in the fixed ring (241), a latching tooth (243) being rotatably connected in the movable groove (242), a limiting groove (244) being provided in the fixed ring (241), and a second spring (245) being provided in the limiting groove (244); The plug connector (25) comprises a connection disk (251) provided at the end of the inner sleeve (222), and a clamping groove (252) provided on the connection disk (251); a shaft (253) is provided at the end of the connection disk (251); The winding mechanism (4) comprises a winding roller (41) and a plug hole (44) provided at the end of the winding roller (41).

3. The X-ray bone densitometer as claimed in claim 2, characterized in that: The housing (21) is provided with an outer shaft sleeve (211) and an inner shaft sleeve (212); The inner wall of the rotating wheel (23), the outer wall of the outer shaft sleeve (211), and the outer wall of the inner shaft sleeve (212) are rotatably connected; The fixing ring (241) is fixedly disposed in the inner shaft sleeve (212).

4. The X-ray bone densitometer as claimed in claim 3, characterized in that: The support mechanism (2) further comprises a one-way clamping member (26) disposed in the outer shaft sleeve (211); The locking direction of the one-way locking component (24) is opposite to the locking direction of the one-way clamping component (26).

5. The X-ray bone densitometer as claimed in claim 4, characterized in that: The one-way clamping member (26) comprises a fixing plate (261) disposed in the outer shaft sleeve (211), and a contact plate (262) disposed at the end of the outer sleeve (221); an inclined block (263) is disposed on the fixing plate (261), and an inclined groove (264) is disposed on the contact plate (262).

6. The X-ray bone densitometer according to claim 5, characterized in that: A connecting shaft (224) is provided in the inner sleeve (222), and a draw rod (225) is rotatably connected to the outer wall of the connecting shaft (224).

7. The X-ray bone densitometer according to any one of claims 2 to 6, characterized in that: The outer wall of the rotating wheel (23) is provided with a tooth block (234); The output shaft of the driving member (5) is provided with a gear (51); The gear (51) and the gear block (234) are meshingly connected.

8. The X-ray bone densitometer according to claim 7, characterized in that: It also includes a transmission belt (6) arranged on the outer wall of the rotating wheel (23).

9. The X-ray bone densitometer according to claim 8, characterized in that: The limiting mechanism (3) comprises a fixing seat (31) arranged on the X-ray bone densitometer body (1), and a supporting shaft (32) rotatably arranged on the fixing seat (31); A side plate (42) is provided at the end of the winding roller (41), a claw (43) is provided at one end of the side plate (42), and the insertion hole (44) is provided on the side plate (42).

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