Suspension telescopic cylinder and X-ray imaging device

Abstract

The utility model relates to the field of X-ray imaging systems, in particular to an X-ray imaging device and a suspension telescopic cylinder of the X-ray imaging device. The suspension telescopic cylinder comprises a fixed cylinder body and a tail-section cylinder body, and the tail-section cylinder body is used for driving a machine head assembly of the X-ray imaging device to ascend and descend; the hoisting shaft is arranged on the tail-section cylinder body and is used for sleeving the lantern ring at the corresponding end of the traction rope; a connecting seat is connected to the tail-section barrel body and comprises a first connecting part and a second connecting part, and a gap is formed between the first connecting part and the second connecting part; the hoisting shaft is movably arranged on the connecting seat, and when the hoisting shaft is in a locking state, the hoisting shaft is connected with the first connecting part and the second connecting part at the same time; in the unlocking state, the hoisting shaft is separated from at least one of the first connecting part and the second connecting part so that the lantern ring can be arranged on the hoisting shaft in a sleeving mode or taken down from the hoisting shaft. The utility model mainly solves the technical problem that the connection reliability of the suspension telescopic cylinder and the traction rope is not easy to guarantee.

Description

Technical Field

[0001] The utility model relates to the field of X-ray imaging systems, in particular to an X-ray imaging device and a suspension telescopic cylinder of the X-ray imaging device. Background Art

[0002] X-ray imaging devices are common in the medical field and are widely used in physical examinations and routine medical imaging diagnostics, such as DR (Digital Radiography). X-ray imaging devices generally consist of a head assembly and a detector assembly. The tube in the head assembly emits X-rays, which are collected by the detector assembly after passing through the human body, generating X-ray images. Depending on how the head assembly is mounted, X-ray imaging devices can be categorized as either ceiling-mounted or column-mounted. The ceiling-mounted type has the head assembly suspended from a suspension device, while the column-mounted type has the head assembly supported on a column.

[0003] For suspended X-ray imaging devices, the head assembly is often mounted on the distal end of a telescopic suspension cylinder. Controlling the extension and retraction of the cylinder allows the head assembly to be raised and lowered. The cylinder's drive mechanism can utilize a pull cord. Because the head assembly can weigh tens of kilograms, it's crucial to ensure the pull cord can reliably apply tension to the cylinder.

[0004] Currently, one method for connecting the distal end of a telescopic suspension cylinder to the pull rope is to loop the rope around a connecting shaft on the distal end. The rope's end is then folded back, and a wire rope clamp is used on-site to clamp the folded section alongside the main section, forming a loop that loops around the connecting shaft. However, since the rope and wire rope clamp rely on friction to secure them, and the clamping force is provided by a locking screw, the reliability of the locking is significantly affected by operator skill, leaving room for improvement. Utility Model Content

[0005] The utility model mainly solves the technical problem that the connection reliability of the suspension telescopic cylinder and the pulling rope is difficult to ensure.

[0006] In a first aspect, the utility model provides a suspended telescopic cylinder.

[0007] Suspension telescopic cylinder, including:

[0008] A fixed cylinder and a distal cylinder, wherein the fixed cylinder is fixed to the mounting base, and the distal cylinder is movably arranged along the axial direction of the fixed cylinder, and is used to drive the head assembly of the X-ray imaging device to rise and fall;

[0009] and a hoisting shaft, the hoisting shaft being arranged on the terminal cylinder and being provided with a sleeve at a corresponding end of the pulling rope;

[0010] The distal cylinder is connected to a connecting seat, which includes a first connecting portion and a second connecting portion, with a gap between the first connecting portion and the second connecting portion;

[0011] The lifting shaft is movably arranged on the connecting seat, and the lifting shaft has a locked state and an unlocked state; in the locked state, the lifting shaft is connected to the first connecting part and the second connecting part at the same time to confine the ring between the first connecting part and the second connecting part along the axial direction of the lifting shaft; in the unlocked state, the lifting shaft is separated from at least one of the first connecting part and the second connecting part to allow the ring to be mounted on or removed from the lifting shaft.

[0012] In one embodiment, a first connecting hole is provided on the first connecting part, and a second connecting hole is provided on the second connecting part. In a locked state, the lifting shaft is inserted into the first connecting hole and the second connecting hole at the same time. In an unlocked state, the lifting shaft is disengaged from at least one of the first connecting hole and the second connecting hole.

[0013] In one embodiment, a sidewall of the distal cylinder is provided with an escape hole, and when the hoisting shaft is in an unlocked state, at least a portion of the hoisting shaft is located in the escape hole.

[0014] In one embodiment, a limiting structure is included, and the limiting structure is used to limit the lifting shaft in the axial direction to prevent the lifting shaft from being separated from the first connecting part and the second connecting part.

[0015] In one embodiment, the limiting structure includes a locking screw; the locking screw is threadedly connected to the hole wall of the first connecting hole and / or the second connecting hole, and the locking screw has an abutting end, which is used to abut the outer peripheral surface of the lifting shaft to limit the axial and / or circumferential movement of the lifting shaft.

[0016] In one embodiment, an annular groove is provided on the lifting shaft, and the abutting end of the locking screw is embedded in the annular groove.

[0017] In one embodiment, the lifting shaft has a head and a rod, the radial dimension of the head is larger than the radial dimension of the rod, and a countersunk hole is provided on the first connecting part on the side away from the second connecting part, and the countersunk hole is for the head of the lifting shaft to enter; the limiting structure includes an axial limiting member, and the axial limiting member is detachably arranged on the connecting seat, and the axial limiting member has a stopping position. When in the stopping position, the axial limiting member blocks the head of the lifting shaft to limit the head from being separated from the countersunk hole.

[0018] In one embodiment, the axial limit member includes a limit plate body and a connecting plate body, the limit plate body is used to block the head of the lifting shaft, the connecting plate body and the limit plate body form a bending structure, the connecting plate body is used to be stacked on the top of the first connecting part, and the connecting plate body is fixed to the first connecting part by screws.

[0019] In one embodiment, there is a gap between the connecting seat and the inner wall of the terminal cylinder, and the suspension telescopic cylinder includes a protective plate, which is used to block the opening formed by the gap, and the protective plate is connected to the axial limit member.

[0020] In one embodiment, the connecting seat includes a main body part, and the first connecting part and the second connecting part are protruded on the same side of the main body part; the suspension telescopic cylinder also includes a main body connecting shaft, and the main body connecting shaft passes through the main body part, and the end section of the cylinder is provided with a first plug-in hole and a second plug-in hole, and the two ends of the main body connecting shaft are respectively plugged into the first plug-in hole and the second plug-in hole.

[0021] In one embodiment, the main connecting shaft has a head and a rod, the radial dimension of the head is larger than the radial dimension of the rod, the first plug-in hole is a countersunk hole, and the first plug-in hole is for the head of the main connecting shaft to enter; the suspension telescopic cylinder also includes a connecting shaft anti-slip part, the connecting shaft anti-slip part is connected to the end cylinder, and the connecting shaft anti-slip part is used to block the head of the main connecting shaft to limit the head of the main connecting shaft from disengaging from the first plug-in hole.

[0022] In a second aspect, the utility model provides an X-ray imaging device.

[0023] X-ray imaging device, comprising:

[0024] A handpiece assembly, the handpiece assembly comprising an X-ray source, the X-ray source being configured to emit X-rays;

[0025] A suspension device, the suspension device is used to carry the head assembly and drive the head assembly to rise and fall;

[0026] The suspension device comprises a mounting base, a suspension telescopic cylinder, a reel and a pulling rope; the suspension telescopic cylinder is any one of the above-mentioned suspension telescopic cylinders;

[0027] The connecting end of the telescopic tube of the pulling rope is provided with a collar, and the collar is sleeved on the lifting shaft;

[0028] The reel is used for winding the pulling rope to realize the retraction and extension of the pulling rope.

[0029] In one embodiment, the pulling rope includes a main rope and an auxiliary rope, and the main rope and the auxiliary rope are both provided with the ring, and the rings of the main rope and the auxiliary rope are both sleeved on the hoisting shaft;

[0030] The auxiliary rope is provided with a reverse bending section at the drum connection end close to the drum, and a reversing member is provided on the drum, and the bend formed by the reverse bending section passes around the reversing member; a crimping surface is provided on the drum, and the drum also includes a pressure plate, and the reverse bending section and the main section of the auxiliary rope are simultaneously crimped and fixed on the crimping surface by the pressure plate.

[0031] In one embodiment, a wire rope lock collar is included, wherein the wire rope lock collar is embedded in a collar formed at the end of the pulling rope, and the wire rope lock collar is isolated between the pulling rope and the lifting shaft.

[0032] In one embodiment, one end of the pulling rope for connecting to the lifting shaft includes a reverse bending section, and the reverse bending section is fixedly connected to the main section of the pulling rope by a pressed joint.

[0033] Beneficial effects of the utility model:

[0034] According to the suspension telescopic cylinder in the utility model, the connecting seat on the last section of the cylinder includes a first connecting part and a second connecting part, and the lifting shaft for the loop of the pulling rope is movably set on the connecting seat; because the pulling rope has a locked state and an unlocked state, in the unlocked state, the lifting shaft and the connecting seat can be separated, so that the loop of the pulling rope can be sleeved on the lifting shaft or removed from the lifting shaft. At the same time, in the locked state, the lifting shaft is simultaneously connected to the first connecting part and the second connecting part to confine the loop between the first connecting part and the second connecting part along the axial direction of the lifting shaft, thereby ensuring a reliable connection between the lifting shaft and the pulling rope; because the lifting shaft has an unlocked state, the loop can be pre-formed on the pulling rope before assembling the suspension device, thereby avoiding the problem of poor stability of the loop structure when the loop is made on site, which is beneficial to ensuring the reliability of the connection between the suspension telescopic cylinder and the pulling rope. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 This is a schematic diagram of the connection structure of the head assembly in one embodiment of the X-ray imaging device of the present invention;

[0036] Figure 2 yes Figure 1 Schematic diagram of the structure of the mounting base and the suspension telescopic cylinder;

[0037] Figure 3 yes Figure 2 Schematic diagram of the structure when the central suspension telescopic cylinder is in the maximum extension state;

[0038] Figure 4 yes Figure 3 Schematic diagram of the connection structure between the middle and end cylinders and the pulling rope;

[0039] Figure 5 yes Figure 4 Exploded diagram;

[0040] Figure 6 yes Figure 5 Structural diagram of the middle collar;

[0041] Figure 7 yes Figure 2 A partial schematic diagram of the reel in FIG.

[0042] List of feature names corresponding to the reference numerals in the figures:

[0043] 100. Head assembly;

[0044] 200, suspension device;

[0045] 210, suspension telescopic cylinder; 211, fixed cylinder; 212, end cylinder; 2121, first plug hole; 2122, second plug hole; 2123, avoidance hole;

[0046] 220, connecting seat; 221, first connecting portion; 2211, first connecting hole; 222, second connecting portion;

[0047] 230, hoisting shaft; 231, ring groove; 232, axial limiter; 2321, limit plate; 2322, connecting plate; 2323, protective plate; 233, locking screw;

[0048] 240, main body connecting shaft; 241, head; 242, rod; 243, connecting shaft anti-dropping member;

[0049] 251. Mounting base; 252. Reel; 2521. Pressing surface; 2522. Reversing element; 2523. Pressing plate; 2524. Pressing plate screw; 253. Wire rope balancer;

[0050] 260, pulling rope; 261, main rope; 262, auxiliary rope; 263, main section; 264, reverse bending section; 265, reverse bending section; 266, ring; 267, connecting sleeve;

[0051] 270, Wire rope lock ring;

[0052] 280, connecting arm;

[0053] 300. Position adjustment mechanism; 310. First guide seat; 320. Second guide seat. DETAILED DESCRIPTION

[0054] The present invention is further described in detail below through specific embodiments in conjunction with the accompanying drawings. Similar elements in different embodiments use associated similar element numbers. In the following embodiments, many detailed descriptions are intended to enable the present application to be better understood. However, those skilled in the art can easily recognize that some of the features can be omitted in different situations, or can be replaced by other elements, materials, and methods. In some cases, some operations related to the present application are not shown or described in the specification. This is to avoid the core part of the present application being overwhelmed by too much description. For those skilled in the art, it is not necessary to describe these related operations in detail. They can fully understand the related operations based on the description in the specification and the general technical knowledge in the art.

[0055] In addition, the features, operations, or characteristics described in the specification may be combined in any appropriate manner to form various embodiments. Furthermore, the steps or actions in the method description may be reordered or adjusted in a manner readily apparent to those skilled in the art. Therefore, the various sequences in the specification and drawings are provided solely for the purpose of clearly describing a particular embodiment and are not intended to be mandatory, unless otherwise specified.

[0056] Component numbers used herein, such as "first" and "second," are used solely to distinguish the components being described and do not convey any sequential or technical meaning. References to "connection" and "coupling" herein, unless otherwise specified, include both direct and indirect connections (couplings).

[0057] In an embodiment of the present utility model, the suspension telescopic cylinder 210 in the X-ray imaging device is connected to the pulling rope 260 through a movably arranged lifting shaft 230, and the lifting shaft 230 is movably arranged on the connecting seat 220. When the lifting shaft 230 is in an unlocked state, the ring 266 at the end of the pulling rope 260 can be put on or removed from the lifting shaft 230. There is no need to pass the pulling rope 260 through the lifting shaft 230 and make the ring on site. The pre-processing of the ring 266 on the pulling rope 260 can be achieved, which is conducive to ensuring the structural reliability of the ring 266, thereby helping to ensure the connection reliability of the suspension telescopic cylinder 210 and the pulling rope.

[0058] Embodiments of the X-ray imaging device in the present utility model:

[0059] In one embodiment, please refer to Figure 1 The X-ray imaging device includes a head assembly 100, a detection assembly (not shown), and a support assembly. The head assembly 100 is used to transmit X-rays, the detection assembly is used to receive X-rays, and the support assembly is used to support the head assembly 100. The structure of the X-ray imaging device will be described in detail below.

[0060] Those skilled in the art will appreciate that the head assembly 100 may include an X-ray source for emitting X-rays. X-rays can generally be generated using a tube, and the direction and range of the X-rays can be controlled by structures such as a beam limiter to reduce scattering and unnecessary radiation exposure. The specific structure of the head assembly 100 for emitting X-rays can refer to existing structures in the relevant art. Considering that the specific structure for emitting X-rays has no direct connection with the innovative content that this application hopes to protect, it will not be described in detail here.

[0061] After the head assembly 100 emits X-rays, the X-rays can be received by the detection assembly to form an image after passing through the human body. The detection assembly may include a flat-panel detector, which is used to receive X-rays to achieve imaging. In some embodiments, the detection assembly can be connected to a corresponding vertical bracket, which can meet the detection requirements of the patient in a standing position. The specific structure of the vertical bracket is not limited. Those skilled in the art will understand that a flat-panel detector is a commonly used device in X-ray imaging equipment, which can directly or indirectly convert X-rays into digital images that can be processed by a computer. The flat-panel detector can adopt an existing structure in the relevant technology. Considering that the specific structure for emitting X-rays has no direct connection with the innovative content that this application hopes to protect, it will not be introduced in detail here.

[0062] It should be noted that, those skilled in the art know that in some other embodiments, in order to meet some detection requirements, the X-ray imaging device may also include a bed, which can be used for the patient to undergo X-ray examination in a lying position. Of course, a flat-panel detector is also provided on the bed, which can receive X-rays passing through the human body. Correspondingly, the head assembly 100 can be set to a pitch-adjustable form so that the head assembly 100 has a vertical irradiation state that can emit X-rays downward. It can be understood that the pitch adjustment of the head assembly 100 can be achieved with various corresponding pitch structures. In some usage scenarios, the patient can stand between the head assembly 100 and the detection assembly provided on the vertical bracket, with the part to be detected close to the flat-panel detector. In other usage scenarios, the patient can also lie on the bed.

[0063] In one embodiment, please refer to Figure 1The supporting assembly may include a suspension device 200 and a connecting arm 280. The supporting assembly may be connected to a position adjustment mechanism 300. The position adjustment mechanism 300 may be fixed to a ceiling to achieve horizontal position adjustment of the suspension device 200 and the head assembly 100. In a specific embodiment, the position adjustment mechanism 300 may include a first guide seat 310 and a second guide seat 320. The first guide seat 310 may be fixed to the ceiling. The second guide seat 320 may be movably disposed on the first guide seat 310 along a first direction. The suspension device 200 may be movably disposed on the second guide seat 320 along a second direction. The first direction and the second direction may be perpendicular to each other.

[0064] The suspension device 200 is used to carry the head assembly 100 and drive the head assembly 100 to rise and fall. Figure 2 In one embodiment, the suspension device 200 may include a suspension telescopic cylinder 210, and may also include a mounting base 251, a reel 252, and a pulling rope 260. The connecting arm 280 is an optional structure that can be connected to the telescopic end of the suspension device 200 for connection to the head assembly 100.

[0065] In a specific embodiment, the suspension telescopic cylinder 210 may include a fixed cylinder 211 and a terminal cylinder 212, the fixed cylinder 211 is used to be fixed on the mounting base 251, the terminal cylinder 212 is movably arranged along the axial direction of the fixed cylinder 211, and the terminal cylinder 212 is used to drive the head assembly 100 of the X-ray imaging device to rise and fall. The suspension telescopic cylinder 210 can adopt an existing structure in the relevant technology. Considering that the specific structure of the suspension telescopic cylinder 210 has no direct connection with the innovative content that this application hopes to protect, it will not be introduced in detail here. Those skilled in the art should know that the terminal cylinder 212 can also be directly assembled on the fixed cylinder 211 to form a first-level telescopic structure; other cylinders can be arranged between the fixed cylinder 211 and the terminal cylinder 212 of the suspension telescopic cylinder 210 to form more than two levels of telescopic structure, such as Figure 3 As shown, three-stage telescopic movement can be formed to achieve a larger lifting range.

[0066] The specific structural form of the mounting base 251 is not limited. The mounting base 251 itself can be fixed to the position adjustment mechanism 300 to achieve horizontal position adjustment, and the mounting base 251 can be fixedly connected to the fixed cylinder 211 of the suspending telescopic cylinder 210. In a specific embodiment, the mounting base 251 can be Figure 2The frame structure shown can facilitate the installation of the drum 252, the wire rope balancer 253 and other related structures. The wire rope balancer 253 can adopt the existing structure in the relevant technology, generally including a tower pulley and a spring, which can use the elastic force of the spring to balance the weight of the tool or heavy object, so that the operator can easily lift and move the heavy object. In the absence of external force, the heavy object can often be kept in any position and will not fall on its own. The installation position of the wire rope balancer 253 can be arranged as needed, for example, Figure 2 In the right space of the frame structure of the mounting base 251.

[0067] The drum 252 is used to wind the traction rope 260, thereby allowing the traction rope 260 to be retracted and extended. The drum 252 can be connected to a drive device and can rotate under the drive device. When the drum 252 rotates in a first direction around the cylinder body, the traction rope 260 can be wound onto the drum 252, thereby shortening the length of the traction rope 260 outside the drum 252 and driving the end section 212 of the telescopic suspension cylinder 210 to rise. When the drum 252 rotates in a second direction around the cylinder body, the traction rope 260 can be released, thereby extending the length of the traction rope 260 outside the drum 252 and lowering the end section 212 of the telescopic suspension cylinder 210.

[0068] It is understood that the pulling rope 260 can adopt a structure commonly used in the art, such as a wire rope. The connection method between the pulling rope 260 and the drum 252 and the wire rope balancer 253 can adopt an existing structure in the relevant art.

[0069] To facilitate connection with the distal end 212 of the telescopic suspension cylinder 210, a collar 266 is provided at the telescopic cylinder connection end of the pull rope 260 (i.e., the end connected to the distal end 212). The collar 266 may be of any form or structure, as long as it forms a space for the hoisting shaft 230 on the distal end 212 to pass through. For example, in some embodiments, the connecting end of the telescopic tube of the pulling rope 260 can be folded back to form a folded section 265, and the folded section 265 and the main section 263 of the pulling rope 260 are clamped by one or more steel wire ropes; the steel wire rope clamp is a commonly used device, which can include a clamping seat, a U-shaped bolt and a nut. The clamping seat is often in contact with the main section 263 of the steel wire rope, and is provided with two through holes. The U-shaped bolt can be buckled on the folded section 265 of the steel wire rope and the two rods 242 of the U-shaped bolt pass through the through holes on the clamping seat. Then, a nut is connected to the protruding part of the rod 242, so that the folded section 265 and the main section 263 of the steel wire rope can be clamped and fixed between the clamping seat and the U-shaped bolt. For another example, an 8-shaped or elliptical connecting sleeve 267 (for example Figure 6The folded section 265 and the main section 263 of the wire rope are pressed and fixed together using a wire rope sleeving machine to form a pressed joint. Wire ropes of different diameters are often pressed using hydraulic presses of different tonnages. For another example, the end of the pulling rope 260 can be connected to a carabiner, or the carabiner can be connected to the loop formed by the folded section 265, with the carabiner serving as the loop 266.

[0070] It should be noted that, as in the above example, the ring 266 is not necessarily a complete ring, and may have an open part that can be opened and closed like some climbing buckles; in addition, the shape of the ring 266 is not limited, for example, it can be circular, or other shapes, such as oval, oblong, rectangular, triangular, a teardrop shape with an arc at one end and a pointed end at the other end, etc.

[0071] In addition, in some other embodiments, the X-ray imaging device may include a wire rope lock collar 270, which is embedded in a collar 266 formed at the end of the pulling rope 260. The wire rope lock collar 270 is isolated between the pulling rope 260 and the hanging shaft 230 on the end cylinder 212. The wire rope lock collar 270, also known as a heart-shaped buckle, is a part that is roughly "U"-shaped with a roughly arc-shaped cross-section. Its outer side forms a slot for the wire rope to be embedded, and its inner side can form a support surface to withstand the compression of the hanging shaft 230, hook or ring, etc., which helps to prevent the wire rope from directly contacting the hanging shaft 230, hook or ring, etc. and causing wear, thereby improving reliability.

[0072] In order to achieve the connection between the end cylinder 212 and the pulling rope 260, in one embodiment, a connecting seat 220 is connected to the end cylinder 212, and the connecting seat 220 includes a first connecting portion 221 and a second connecting portion 222, and there is a gap between the first connecting portion 221 and the second connecting portion 222. The hoisting shaft 230 is movably arranged on the connecting seat 220, and the hoisting shaft 230 has a locked state and an unlocked state. In the locked state, the hoisting shaft 230 is simultaneously connected to the first connecting portion 221 and the second connecting portion 222 to confine the ring 266 between the first connecting portion 221 and the second connecting portion 222 along the axial direction of the hoisting shaft 230; in the unlocked state, the hoisting shaft 230 is separated from at least one of the first connecting portion 221 and the second connecting portion 222, so that the ring 266 can be mounted on the hoisting shaft 230 or removed from the hoisting shaft 230. By changing the assembly state of the hanging shaft 230 , the pulling rope 260 having the collar 266 can be installed on the hanging shaft 230 or removed from the hanging shaft 230 .

[0073] In one embodiment, please refer to Figure 4 and Figure 5The connecting seat 220 includes a main body, a first connecting portion 221 and a second connecting portion 222 protruding from the same side of the main body; the connecting seat 220 can be fixed to the end cylinder 212 by a main body connecting shaft 240, and the main body connecting shaft 240 passes through the main body, so that the pulling force can be transmitted between the connecting seat 220 and the end cylinder 212. The connecting seat 220 can be hinged to the end cylinder 212 by relying on the main body connecting shaft 240, so that it can adapt to the direction of the pulling force of the pulling rope 260, which is conducive to improving stability. In some other embodiments, the connecting seat 220 can also be completely positioned in the inner cavity of the end cylinder 212, or fixed to the end cylinder 212 by any fixing structure such as screws, bolts, rivets, pins, etc., or integrally formed with the end cylinder 212.

[0074] In a specific embodiment, a first plug-in hole 2121 and a second plug-in hole 2122 are provided on the end section cylinder 212, and the first plug-in hole 2121 and the second plug-in hole 2122 are located on opposite sides of the end section cylinder 212, and the two ends of the main connecting shaft 240 are respectively plugged into the first plug-in hole 2121 and the second plug-in hole 2122, which can rely on different sides of the end section cylinder 212 to share the force from the connecting seat 220 at the same time, which is beneficial to the assembly stability and working reliability of the connecting seat 220.

[0075] In order to maintain a stable connection between the connecting seat 220 and the end cylinder 212, in one embodiment, the main connecting shaft 240 has a head 241 and a rod 242, the radial size of the head 241 is larger than the radial size of the rod 242, the first plug hole 2121 is a countersunk hole, and the first plug hole 2121 is for the head 241 of the main connecting shaft 240 to enter; the suspension telescopic cylinder 210 also includes a connecting shaft anti-slip member 243 (please refer to Figure 4 ), the connecting shaft anti-slip member 243 is connected to the end cylinder 212, and the connecting shaft anti-slip member 243 is used to block the head 241 of the main connecting shaft 240 to prevent the head 241 of the main connecting shaft 240 from being separated from the first plug hole 2121. The first plug hole 2121 is a countersunk hole to prevent the head 241 of the main connecting shaft 240 from forming a protrusion on the outer surface of the end cylinder 212, and also to play an axial positioning role for the main connecting shaft 240. Please refer to Figure 4 The connecting shaft anti-slip component 243 can be a limit baffle fixed on the outer side of the end cylinder 212, and the limit baffle can be fixed to the end cylinder 212 by screws.

[0076] It should be noted that, in some embodiments, the outer peripheral surface of the end cylinder 212 can be a polygonal structure, such as the regular hexagonal structure shown in the figure, and the cross-section of the inner cavity can be a circle. In this case, the limit baffle can be a flat plate corresponding to one of the lateral planes of the end cylinder 212. However, in some other embodiments, the end cylinder 212 can also be replaced with other shapes, for example, the outer peripheral surface can be a cylindrical surface, and the inner cavity can also be a polygonal structure. In some other embodiments, the connecting shaft anti-slip member 243 can also be replaced with other forms, such as a screw, which can be connected to the end cylinder 212, and the head is crimped to the outer end of the main connecting shaft 240.

[0077] In order to realize the connection of the hanging shaft 230, in one embodiment, please refer to Figure 4 and Figure 5 , a first connecting hole 2211 is provided on the first connecting part 221, and a second connecting hole (blocked in the figure) is provided on the second connecting part 222. The first connecting hole 2211 and the second connecting hole are coaxially arranged, and the hoisting shaft 230 can be inserted into the first connecting hole 2211 and the second connecting hole at the same time, and move along the axial direction of the first connecting hole 2211 and the second connecting hole. In the locked state, the hoisting shaft 230 is inserted into the first connecting hole 2211 and the second connecting hole at the same time, and the ring 266 at the end of the pulling rope 260 is limited between the first connecting part 221 and the second connecting part 222. It can have an axial movement along the hoisting shaft 230, and can also be positioned along the axial direction of the hoisting shaft 230. In the unlocked state, the hoisting shaft 230 is disengaged from at least one of the first connecting hole 2211 and the second connecting hole. For example, the hoisting shaft 230 can be moved axially to Figure 5 The left side moves away from the second connecting hole, and the hanging shaft 230 can move axially to the left side. Figure 5 The first connecting hole 2211 can be disengaged by moving the first connecting portion 2211 to the right, or it can be completely pulled out of the connecting base 220 and simultaneously disengaged from the first connecting hole 2211 and the second connecting hole. By providing the first connecting portion 221 and the second connecting portion 222 for connection to the lifting shaft 230, the axial ends of the lifting shaft 230 can simultaneously bear the applied force, and the first connecting portion 221 and the second connecting portion 222 can also limit the loop 266 on the pulling rope 260. In some other embodiments, the number of connecting bases 220 can also be more than two to distribute the lifting force applied to the connecting base 220.

[0078] In some embodiments, the connecting seat 220 can be arranged in the inner cavity of the last section cylinder 212. In this case, due to the limited size of the inner cavity of the last section cylinder 212, the movable stroke of the hoisting shaft 230 on the connecting seat 220 may be limited, and may even be unable to meet the installation and disassembly requirements of the ring 266 on the pulling rope 260. Therefore, in some embodiments, a avoidance hole 2123 can be provided on the side wall of the last section cylinder 212, and when the hoisting shaft 230 moves to the unlocked state, at least a portion of the hoisting shaft 230 can enter the avoidance hole 2123. According to the movement direction of the hoisting shaft 230 on the mounting seat during the unlocking process, the avoidance hole 2123 can be set corresponding to the movement direction of the hoisting shaft 230 during the unlocking process. The above-mentioned avoidance hole 2123 can be a through hole or a blind hole. In addition, the shape of the avoidance hole 2123 is not limited.

[0079] The hoisting shaft 230 is movably arranged on the connecting seat 220, and the unlocked state and the locked state of the hoisting shaft 230 can be achieved by moving the hoisting shaft 230. In order to enable the hoisting shaft 230 to be positioned at the corresponding position after reaching the locked state, in some embodiments, the suspension telescopic cylinder 210 also includes a limiting structure, which is used to limit the hoisting shaft 230 in the axial direction to prevent the hoisting shaft 230 from separating from the first connecting portion 221 and the second connecting portion 222. In a specific embodiment, the limiting structure includes a locking screw 233; the locking screw 233 is threadedly connected to the wall of the second connecting hole, and the locking screw 233 has an abutment end, which is used to abut the outer circumferential surface of the hoisting shaft 230 to limit the axial and / or circumferential movement of the hoisting shaft 230. The use of the locking screw 233 can easily limit the hoisting shaft 230, has a simple structure, requires little space, and can adapt to the narrow space of the end cylinder 212. Of course, in some other embodiments, the locking screw 233 may also be provided at the first connection hole 2211 , or be provided at both the first connection hole 2211 and the second connection hole 2211 .

[0080] In one embodiment, an annular groove 231 can be provided on the lifting shaft 230, and the abutting end of the locking screw 233 is embedded in the annular groove 231. In this way, the locking screw 233 can directly form a blockage on the groove side wall of the annular groove 231 along the axial direction of the lifting shaft 230, which is conducive to improving the limiting reliability.

[0081] Since the head assembly 100 is heavy, if the head assembly 100 is accidentally moved downward, serious consequences may occur. In order to improve safety and reliability, in one embodiment, the hanging shaft 230 also has a head and a rod. The radial dimension of the head is larger than the radial dimension of the rod. The first connecting portion 221 is provided with a countersunk hole on the side away from the second connecting portion 222. The countersunk hole is for the head of the hanging shaft 230 to enter. The limiting structure includes an axial limiting member 232. Please refer to Figure 5The axial limiter 232 may include a limiter plate 2321 and a connecting plate 2322. The limiter plate 2321 is used to block the head of the hanging shaft 230. The connecting plate 2322 and the limiter plate 2321 form a bent structure. The connecting plate 2322 is used to be stacked on top of the first connecting portion 221. The connecting plate 2322 is fixed to the first connecting portion 221 by screws. When the axial limiter 232 is fixed to the first connecting portion 221, the axial limiter 232 is in the stopping position. At this time, the axial limiter 232 blocks the head of the hanging shaft 230 to prevent the head from disengaging from the countersunk hole.

[0082] By providing a head with a larger radial dimension, the hanging shaft 230 can be positioned by the head and the bottom wall of the countersunk hole, so that the hanging shaft 230 can only move toward the side of the first connecting part 221 away from the second connecting part 222; at the same time, by providing an axial limiter 232, the axial limiter 232 can also limit the head from being separated from the countersunk hole, thereby forming a double limit together with the locking screw 233, so that the hanging shaft 230 can be reliably maintained in the locked state, further improving reliability. The axial limiter 232 is detachably provided on the connecting seat 220. When the hanging shaft 230 needs to be moved to the unlocked state, the axial limiter 232 is removed from the first connecting part 221 to release the limit of the hanging shaft 230 by the axial limiter 232.

[0083] In some embodiments, please refer to Figure 4 and Figure 5 There is a gap between the connecting seat 220 and the inner wall of the last section cylinder 212. The axial limiter 232 includes a protective plate 2323. The protective plate 2323 is used to block the opening formed by the gap. The protective plate 2323 is connected to the axial limiter 232. The provision of the protective plate 2323 can prevent various screws or other components from falling into the last section cylinder 212. Since the top opening of the last section cylinder 212 is provided with the connecting seat 220 and the space is small, once an object falls into the last section cylinder 212, it will require very complicated operations to remove it. After the protective plate 2323 is provided on the axial limiter 232, it can not only prevent the objects from falling, but also realize the installation of the protective plate 2323 while installing the axial limiter 232, which is convenient for assembly. In some other embodiments, the protective plate 2323 can also be a separate part independent of the axial limiter 232.

[0084] In the above embodiment, the lifting shaft 230 is movably disposed on the connecting seat 220 along the axial direction. Those skilled in the art will appreciate that in other embodiments, the lifting shaft 230 may be movably disposed on the connecting seat 220 in other ways. For example, one end of the lifting shaft 230 may be hinged to the first connecting portion 221, and the hinge axis may be parallel to or perpendicular to the axis of the distal cylinder 212. Correspondingly, the other end of the lifting shaft 230 may be snapped into a side slot on the second connecting portion 222 (i.e., a slot disposed on the side of the connecting seat 220, with the slot opening facing perpendicular to the axis of the distal cylinder 212), or secured to the second connecting portion 222 via fasteners such as screws or bolts. For another example, both the first connecting portion 221 and the second connecting portion 222 may be provided with side slots, and the lifting shaft 230 may be movable into and out of the side slots in a direction perpendicular to its axis.

[0085] Of course, those skilled in the art will appreciate that different limiting structures may be employed when the hoisting shaft 230 is mounted in different movable manners. For example, when one end of the hoisting shaft 230 is hinged to the first connecting portion 221 and the other end is clipped into the side slot on the second connecting portion 222, an axial limiting member 232 comprising the limiting plate 2321 and the connecting plate 2322 may be fixedly connected to the second connecting portion 222, and the side slot opening may be closed by the limiting plate 2321; or, a screw may be provided on the second connecting portion 222 that passes through the two side walls of the side slot, and the side slot opening may be closed by the screw.

[0086] For a single pulling rope, accidental damage may occur during use, resulting in a loss of pulling force on the hanging device. To avoid such accidents, in some embodiments, the X-ray imaging device may include a main rope 261 and an auxiliary rope 262, each of which is provided with a ring 266, and the rings 266 of the main rope 261 and the auxiliary rope 262 are both mounted on the hanging shaft 230. In this way, if the main rope 261 is damaged and loses its pulling effect, the auxiliary rope 262 can intervene and play a pulling role. It will be understood by those skilled in the art that when the main rope 261 is in normal working condition, the auxiliary rope 262 does not need to participate in providing pulling force, but only remains in a straight state to avoid a period of no pulling force on the end cylinder 212 when the main rope 261 is damaged.

[0087] In order to keep the auxiliary rope 262 in a straight state, in one embodiment, please refer to Figure 7The auxiliary rope 262 is provided with a reverse bending section 264 at the drum connection end near the drum 252, and a reversing member 2522 is provided on the drum 252. The reversing member 2522 can be a rotating sleeve or pulley rotatably assembled on the rotating shaft, a column fixed on the drum 252, etc. The bend formed by the reverse bending section 264 bypasses the reversing member 2522; a crimping surface 2521 is provided on the drum 252, and the drum 252 also includes a pressing plate 2523. The reverse bending section 264 and the main section 263 of the auxiliary rope 262 are simultaneously crimped and fixed on the crimping surface 2521 by the pressing plate 2523, and the crimping force of the pressing plate 2523 can be achieved by the corresponding pressing plate screw 2524. Before connecting the auxiliary rope 262 to the drum 252, the lower end of the auxiliary rope 262 can be connected to the hoisting shaft 230 on the terminal cylinder 212, and then the auxiliary rope 262 can be straightened and wound onto the drum 252, then passed over the diverter 2522, and finally pressed against the drum 252 using the pressure plate 2523. The provision of the diverter 2522 can utilize the movable pulley principle to reduce the force on the reverse bending section 264, which is conducive to ensuring the fixation reliability of the reverse bending section 264. In a specific embodiment, an arcuate groove can be provided on the crimping surface 2521, and the arcuate groove is provided for the auxiliary rope 262 to be embedded radially, thereby increasing the crimping area between the auxiliary rope 262 and the drum 252 and improving the crimping force. In some other embodiments, the diverter 2522 can also be omitted, and the auxiliary rope 262 can be fixed to the drum 252 in a straight state.

[0088] When connecting the end cylinder 212 and the pulling rope 260, the telescopic cylinder connecting end of the pulling rope 260 can be pre-formed with a collar 266. Then, the hoisting shaft 230 is unlocked, and the collar 266 at the telescopic cylinder connecting end can be sleeved onto the hoisting shaft 230. Then, the hoisting shaft 230 is locked to prevent the collar 266 from being detached from the hoisting shaft 230, thereby achieving a reliable connection between the pulling rope 260 and the end cylinder 212. Compared to avoiding the need to wrap the end of the pulling rope 260 around the hoisting shaft 230 on site and then forming the collar 266, this can avoid the situation where a reliable collar 266 cannot be formed due to inappropriate on-site operating tools or significant influence from human factors, thereby avoiding the problem of an unreliable connection between the suspended telescopic cylinder 210 and the pulling rope 260 due to an unstable collar 266 structure.

[0089] Embodiment of the suspension telescopic cylinder in the utility model:

[0090] The structure of the suspension telescopic cylinder may be the same as the structure of the suspension telescopic cylinder 210 in any embodiment of the above-mentioned X-ray imaging device, and will not be described in detail here.

[0091] The above examples are used to illustrate the present invention, which are only used to help understand the present invention and are not intended to limit the present invention. Those skilled in the art of the present invention can make some simple deductions, modifications or substitutions based on the concept of the present invention.

Claims

1. Suspension telescopic cylinder, characterized in that: include: A fixed cylinder and a distal cylinder, wherein the fixed cylinder is fixed to the mounting base, and the distal cylinder is movably arranged along the axial direction of the fixed cylinder, and is used to drive the head assembly of the X-ray imaging device to rise and fall; and a hoisting shaft, the hoisting shaft being arranged on the terminal cylinder and being provided with a sleeve at a corresponding end of the pulling rope; The distal cylinder is connected to a connecting seat, which includes a first connecting portion and a second connecting portion, with a gap between the first connecting portion and the second connecting portion; The lifting shaft is movably arranged on the connecting seat, and the lifting shaft has a locked state and an unlocked state; in the locked state, the lifting shaft is connected to the first connecting part and the second connecting part at the same time to confine the ring between the first connecting part and the second connecting part along the axial direction of the lifting shaft; in the unlocked state, the lifting shaft is separated from at least one of the first connecting part and the second connecting part to allow the ring to be mounted on or removed from the lifting shaft.

2. The telescopic suspension cylinder according to claim 1, characterized in that: A first connecting hole is provided on the first connecting part, and a second connecting hole is provided on the second connecting part. In the locked state, the lifting shaft is inserted into the first connecting hole and the second connecting hole at the same time. In the unlocked state, the lifting shaft is disengaged from at least one of the first connecting hole and the second connecting hole.

3. The telescopic suspension cylinder according to claim 2, characterized in that: An avoidance hole is provided on the side wall of the terminal cylinder. When the hoisting shaft is in an unlocked state, at least a portion of the hoisting shaft is located in the avoidance hole.

4. The telescopic suspension cylinder according to claim 2, wherein: A limiting structure is included, and the limiting structure is used to limit the hoisting shaft at least in the axial direction to prevent the hoisting shaft from being separated from the first connecting part and the second connecting part.

5. The telescopic suspension cylinder according to claim 4, characterized in that: The limiting structure includes a locking screw; the locking screw is threadedly connected to the hole wall of the first connecting hole and / or the second connecting hole, and the locking screw has an abutting end, which is used to abut the outer peripheral surface of the lifting shaft to limit the axial and / or circumferential movement of the lifting shaft.

6. The telescopic suspension cylinder according to claim 5, characterized in that: The hoisting shaft is provided with an annular groove, and the abutting end of the locking screw is embedded in the annular groove.

7. The telescopic suspension cylinder according to claim 5 or 6, characterized in that: The lifting shaft has a head and a rod, the radial dimension of the head is larger than the radial dimension of the rod, and a countersunk hole is provided on the first connecting part on the side away from the second connecting part, and the countersunk hole is for the head of the lifting shaft to enter; the limiting structure includes an axial limiting member, and the axial limiting member is detachably arranged on the connecting seat, and the axial limiting member has a stopping position. When in the stopping position, the axial limiting member blocks the head of the lifting shaft to limit the head from being separated from the countersunk hole.

8. The telescopic suspension cylinder according to claim 7, characterized in that: The axial limiter includes a limit plate body and a connecting plate body. The limit plate body is used to block the head of the lifting shaft. The connecting plate body and the limit plate body form a bending structure. The connecting plate body is used to be stacked on the top of the first connecting part. The connecting plate body is fixed to the first connecting part by screws.

9. The telescopic suspension cylinder according to claim 7, wherein: There is a gap between the connecting seat and the inner wall of the terminal cylinder. The suspension telescopic cylinder includes a protective plate. The protective plate is used to block the opening formed by the gap. The protective plate is connected to the axial limiter.

10. The telescopic suspension cylinder according to any one of claims 1 to 6, characterized in that: The connecting seat includes a main body part, and the first connecting part and the second connecting part are protruded on the same side of the main body part; the suspension telescopic cylinder also includes a main body connecting shaft, which passes through the main body part, and the end section of the cylinder is provided with a first plug hole and a second plug hole, and the two ends of the main body connecting shaft are respectively plugged into the first plug hole and the second plug hole.

11. The telescopic suspension cylinder according to claim 10, wherein: The main connecting shaft has a head and a rod, the radial size of the head is larger than the radial size of the rod, the first plug-in hole is a countersunk hole, and the first plug-in hole is for the head of the main connecting shaft to enter; the suspension telescopic cylinder also includes a connecting shaft anti-slip part, the connecting shaft anti-slip part is connected to the terminal cylinder, and the connecting shaft anti-slip part is used to block the head of the main connecting shaft to limit the head of the main connecting shaft from disengaging from the first plug-in hole.

12. X-ray imaging device, characterized in that include: A handpiece assembly, the handpiece assembly comprising an X-ray source, the X-ray source being configured to emit X-rays; A suspension device, the suspension device is used to carry the head assembly and drive the head assembly to rise and fall; The suspension device comprises a mounting base, a suspension telescopic cylinder, a reel and a pulling rope; the suspension telescopic cylinder is the suspension telescopic cylinder according to any one of claims 1 to 11; The connecting end of the telescopic tube of the pulling rope is provided with a collar, and the collar is sleeved on the lifting shaft; The reel is used for winding the pulling rope to realize the retraction and extension of the pulling rope.

13. The X-ray imaging apparatus according to claim 12, wherein: The pulling rope includes a main rope and an auxiliary rope, and the main rope and the auxiliary rope are both provided with the ring, and the rings of the main rope and the auxiliary rope are both sleeved on the hoisting shaft; The auxiliary rope is provided with a reverse bending section at the drum connection end close to the drum, and a reversing member is provided on the drum, and the bend formed by the reverse bending section passes around the reversing member; a crimping surface is provided on the drum, and the drum also includes a pressure plate, and the reverse bending section and the main section of the auxiliary rope are simultaneously crimped and fixed on the crimping surface by the pressure plate.

14. The X-ray imaging apparatus according to claim 12, wherein: It comprises a wire rope lock collar, which is embedded in a collar formed at the end of the pulling rope. The wire rope lock collar is isolated between the pulling rope and the hoisting shaft.

15. The X-ray imaging apparatus according to claim 14, wherein: One end of the pulling rope used for connecting to the hoisting shaft includes a reverse bending section, and the reverse bending section is fixedly connected to the main section of the pulling rope through a pressing joint.

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