Electromagnetic braking device and X-ray camera device

Abstract

The utility model discloses an electromagnetic braking device and an X-ray camera device. The electromagnetic braking device comprises a fixed part, a sliding part and an electromagnetic braking assembly. The sliding piece can slide in the first direction relative to the fixed piece, and a magnetic attraction guide rail extending in the first direction is installed on the sliding piece; the electromagnetic braking assembly comprises a mounting seat and an electromagnetic attraction part, the mounting seat is connected with the fixing part, a sliding block in sliding fit with the magnetic attraction guide rail is mounted on the side, close to the magnetic attraction guide rail, of the mounting seat, the sliding block can slide on the magnetic attraction guide rail in the first direction, and the electromagnetic attraction part is arranged on the mounting seat and used for being in magnetic attraction fit with the magnetic attraction guide rail. Therefore, locking and unlocking of the sliding piece and the fixed piece are achieved. The machining precision and the assembling precision of the magnetic attraction guide rail, the sliding block and the mounting base are easier to guarantee, so that the initial gap between the electromagnetic attraction part and the magnetic attraction guide rail can be designed to be smaller and more uniform, and collision noise generated when the electromagnetic attraction part and the magnetic attraction guide rail are attracted can be reduced.

Description

Technical Field

[0001] The present application relates to the technical field of medical equipment, and in particular to an electromagnetic braking device and an X-ray imaging device. Background Art

[0002] A DR (Digital Radiography) device is a medical diagnostic device that uses X-ray imaging to take X-rays of an object (such as the human body). It converts the X-ray image transmitted through the object into a visible light image, and then converts the visible light image into an electrical image signal, thereby obtaining a digital image. A DR device typically has retractable devices such as a lifting column and a telescopic arm. These retractable devices typically include a fixed component, a moving component, and an electromagnetic brake device. The moving component can move relative to the fixed component. The electromagnetic brake device includes an electromagnet and a magnet fixed to the fixed and moving components, respectively. The moving component is braked by the magnetic attraction of the electromagnet and magnet.

[0003] In the related art, since the fixed parts and the moving parts are usually large in size, the processing accuracy and installation accuracy are difficult to guarantee, resulting in large errors in the processing and assembly of the fixed parts and the moving parts, and the parallelism of the fixed parts and the moving parts is difficult to guarantee, which leads to large angular deviations in the attraction surfaces of the electromagnets and the magnets, which will reduce the magnetic attraction force of the electromagnets and the magnets, resulting in poor braking effect of the electromagnetic braking device. Utility Model Content

[0004] The present application provides an electromagnetic braking device and an X-ray imaging device, so that the initial gap between the electromagnetic suction element and the magnetic suction guide rail can be designed to be smaller and more uniform, thereby reducing the collision noise generated when the electromagnetic suction element and the magnetic suction guide rail are attracted.

[0005] 14. The swiftly and minutely adjusting device for a wood-planer working table as claimed in claim 13, wherein the lifting arm is mounted on the support frame, and the support frame comprises a first end portion, a second end portion of the second moving member being mounted on the support frame, and a third end portion of the second moving member being engaged with the second moving member by the magnetic attraction device.

[0006] In some embodiments of the present application, a receiving groove is provided on one side of the mounting base close to the fixing member, and the electromagnetic attraction member is disposed in the receiving groove, thereby reducing the overall volume of the electromagnetic braking device and making the connection between the slider and the magnetic attraction guide rail more convenient.

[0007] In some embodiments of the present application, the electromagnetic brake assembly further includes a positioning washer positioned between the electromagnetic element and the bottom wall of the receiving groove and connected to the mounting base. The positioning washer can be used to adjust the inclination of the electromagnetic element's engaging surface to improve the parallelism between the electromagnetic element and the engaging surface of the magnetic guide rail.

[0008] In some embodiments of the present application, the sliders are disposed on opposite sides of the receiving groove along the first direction, a positioning pin is disposed on a side of the mounting base proximate to the sliders, and a positioning hole for inserting the positioning pin is disposed on a side of the slider proximate to the mounting base. The positioning of the positioning pin and the positioning hole allows the sliders to be positioned and installed on the mounting base, thereby improving the installation accuracy of the sliders and ensuring that multiple sliders are arranged in parallel along the first direction.

[0009] In some embodiments of the present application, the electromagnetic element is capable of moving relative to the mounting base in a second direction to move closer to or further away from the magnetic guide rail, the second direction being perpendicular to the first direction. The electromagnetic brake assembly further comprises an elastic member connected to the mounting base and the electromagnetic element, the elastic member being configured to provide a force for the electromagnetic element to move away from the magnetic guide rail. When the electromagnetic element is demagnetized, the elastic member can separate the electromagnetic element from the magnetic guide rail, preventing friction between the magnetic guide rail and the electromagnetic element when the sliding member slides.

[0010] In some embodiments of the present application, the electromagnetic suction member is provided with a mounting hole extending along the second direction to pass through both sides of the electromagnetic suction member, and the electromagnetic brake assembly further includes: a guide member, the guide member including a guide portion and a limit portion, the guide portion is provided through the mounting hole and connected to the mounting seat, the elastic member is sleeved on the guide portion and is located in the mounting hole, the limit portion is located on the side of the electromagnetic suction member close to the magnetic guide rail and is connected to the guide portion, and the limit portion is used to provide a limit for the electromagnetic suction member and the elastic member. This can prevent the elastic member from popping out of the mounting hole and detaching from the electromagnetic suction member, and at the same time prevent the electromagnetic suction member from detaching from the mounting seat.

[0011] In some embodiments of the present application, a retaining groove is provided on a side of the electromagnetic element adjacent to the magnetic guide rail, the mounting hole extends from the bottom wall of the retaining groove away from the magnetic guide rail, and the limiting portion is located in the retaining groove. This prevents the limiting portion from affecting the attraction between the electromagnetic element and the magnetic guide rail.

[0012] In some embodiments of the present application, the electromagnetic brake assembly further comprises: an isolation seat mounted on a side of the fixed member near the sliding member, the isolation seat being provided with a slot, the mounting seat being engaged with the slot to space the mounting seat from the fixed member. This provides a certain gap between the mounting seat and the fixed member, and the mounting seat and the electromagnetic attracting member do not contact the fixed member, thereby minimizing the impact of errors such as non-parallelism and deflection between the fixed member and the sliding member caused by processing and assembly on the electromagnetic attracting member.

[0013] In some embodiments of the present application, the side walls of the slot on opposite sides are provided with a locking protrusion, the mounting seat is locked between the two locking protrusions, and the mounting seat is spaced apart from the side walls of the slot. This can reduce the impact of errors such as non-parallelism and deflection of the isolation seat caused by processing and assembly on the electromagnetic suction component.

[0014] In some embodiments of the present application, the fixing member is disposed around the periphery of the sliding member to form an accommodating cavity. The electromagnetic brake assembly is disposed within the accommodating cavity and located between an inner sidewall of the fixing member and an outer sidewall of the sliding member. The first direction is parallel to the lengthwise direction of the fixing member. This can reduce the overall volume of the electromagnetic brake device.

[0015] In some embodiments of the present application, the electromagnetic element is a de-energized magnet. When powered off, the electromagnetic element retains its magnetism and engages with the magnetic guide rail to lock the sliding element to the fixed element. When powered on, the electromagnetic element demagnetizes and separates from the magnetic guide rail to unlock the sliding element from the fixed element. When the X-ray imaging device is not needed, the electromagnetic element can be powered off, allowing the electromagnetic element to remain engaged with the magnetic guide rail, thereby reducing power consumption.

[0016] In a second aspect, the present application further provides an X-ray imaging device, comprising an X-ray detector and an electromagnetic braking device as described in any one of the above embodiments, wherein the X-ray detector is connected to the sliding member.

[0017] The beneficial effects of the present application are as follows: the sliding part realizes the sliding connection with the electromagnetic attraction part through the sliding cooperation between the slider and the magnetic guide rail. Compared with the fixed part and the sliding part, the magnetic guide rail, the slider and the mounting seat are smaller in size, and the processing difficulty of the magnetic guide rail, the slider and the mounting seat is low, making it easier to ensure the processing accuracy and assembly accuracy of the magnetic guide rail, the slider and the mounting seat, thereby making the parallelism of the attraction surface of the electromagnetic attraction part and the magnetic guide rail better, and preventing the attraction surface from having a large angle deviation, thereby improving the attraction of the electromagnetic attraction part and the magnetic guide rail. Combined force, and because the processing accuracy is easy to ensure, the initial gap between the electromagnetic suction member and the magnetic guide rail can be designed to be smaller and more uniform, thereby reducing the collision noise generated when the electromagnetic suction member and the magnetic guide rail are attracted, and even the initial gap between the electromagnetic suction member and the magnetic guide rail can be completely eliminated, thereby achieving silent attraction; in addition, in the present application, the magnetic guide rail is used to cooperate with the slider and to cooperate with the electromagnetic suction member by magnetic attraction, and there is no need to set up additional magnets, thereby reducing the number of parts of the electromagnetic braking device and reducing the production cost of the electromagnetic braking device. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present application or related technologies, the following briefly introduces the drawings required for use in the embodiments or related technical descriptions. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without any creative work.

[0019] Figure 1 This is a structural diagram of an electromagnetic braking device in one embodiment of the present application;

[0020] Figure 2 This is a partial structural diagram of an electromagnetic brake device in one embodiment of the present application;

[0021] Figure 3 This is a structural diagram of the electromagnetic brake assembly and the magnetic guide rail in one embodiment of the present application;

[0022] Figure 4 This is a schematic structural diagram of an electromagnetic brake assembly in one embodiment of the present application at a first viewing angle;

[0023] Figure 5 This is a schematic diagram of the exploded components of an electromagnetic brake assembly in one embodiment of the present application;

[0024] Figure 6 This is a partial structural diagram of an electromagnetic brake assembly in one embodiment of the present application;

[0025] Figure 7 This is a structural schematic diagram of the electromagnetic brake assembly in a second viewing angle in one embodiment of the present application.

[0026] Reference numerals:

[0027] 10. Fixing member; 11. Accommodating cavity; 20. Sliding member; 31. Magnetic guide rail; 32. Slide rail; 33. Roller; 40. Electromagnetic brake assembly; 41. Mounting seat; 411. Accommodating groove; 42. Electromagnetic attraction member; 421. Mounting hole; 422. Avoiding groove; 43. Sliding block; 431. Positioning hole; 441. Positioning pin; 442. Threaded member; 45. Adjusting gasket; 46. Elastic member; 47. Guide member; 471. Guide portion; 472. Limiting portion; 48. Isolation seat; 481. Slot; 482. Boss. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical solutions and advantages of this application more clearly understood, the present application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this application and are not intended to limit this application.

[0029] DR (Digital Radiography) devices typically feature retractable devices, such as lifting columns and telescopic arms. When the DR device is stored, these devices are retracted to reduce the device's overall size. During normal operation, the retractable devices are extended and adjusted to a suitable position for the X-ray detector. During filming, the retractable devices must be securely locked to prevent interference with the image. Therefore, an electromagnetic brake device is required to secure the moving parts within the retractable device. The retractable device typically includes a fixed component, a moving component, and an electromagnetic brake device. The moving component can move relative to the fixed component. The electromagnetic brake device includes an electromagnet and a magnet, respectively fixed to the fixed and moving components. The moving component is braked by the magnetic attraction of the electromagnet and magnet.

[0030] In the related art, since the fixed parts and the moving parts are usually large in size, the processing accuracy and installation accuracy are difficult to ensure, resulting in large errors in the processing and assembly of the fixed parts and the moving parts, and the parallelism of the fixed parts and the moving parts is difficult to ensure, which leads to a large angle deviation of the attraction surface of the electromagnet and the magnet, which will reduce the magnetic attraction force of the electromagnet and the magnet, resulting in poor braking effect of the electromagnetic braking device, and since the processing accuracy is difficult to ensure, the initial gap between the electromagnet and the magnet is usually large, which in turn causes a large collision noise when the electromagnet and the magnet are attracted.

[0031] Based on the above technical problems, the present application provides an electromagnetic braking device and an X-ray imaging device to solve the above technical problems.

[0032] In a first aspect, the present application provides an electromagnetic braking device, such as Figure 1and Figure 2 As shown, the electromagnetic brake device includes a telescopic device, which includes a fixed member 10 and a sliding member 20. The sliding member 20 is slidably connected to the fixed member 10 and can slide relative to the fixed member 10 along a first direction XX. It can be understood that the fixed member 10 is a fixed component in a telescopic device such as a lifting column or a telescopic cross arm. The fixed member 10 is used to provide support for the sliding member 20. The fixed member 10 can be in the shape of a strip, a cylinder, or other shapes; the sliding member 20 is a movable component in the telescopic device. The sliding member 20 can slide on the fixed member 10 along the first direction XX to extend and retract. The sliding member 20 can be in the shape of a strip, a cylinder, or other shapes. In some embodiments, the fixed member 10 is arranged around the outer periphery of the sliding member 20 to form a receiving cavity 11. The electromagnetic brake assembly 40 is arranged in the receiving cavity 11 and is located between the inner side wall of the fixed member 10 and the outer side wall of the sliding member 20. The first direction XX is parallel to the length direction of the fixed member 10.

[0033] Specifically, if Figure 2 and Figure 3 As shown, a magnetic guide rail 31 is installed on the side of the sliding member 20 close to the fixed member 10, and the magnetic guide rail 31 extends along the first direction XX; the electromagnetic braking device also includes an electromagnetic braking assembly 40, which is arranged on the side of the fixed member 10 close to the sliding member 20, and the electromagnetic braking assembly 40 includes a mounting seat 41 and an electromagnetic suction member 42, the mounting seat 41 is connected to the fixed member 10, and a slider 43 that slides with the magnetic guide rail 31 is installed on the side of the mounting seat 41 close to the magnetic guide rail 31, and the slider 43 can slide along the first direction XX on the magnetic guide rail 31, and the electromagnetic suction member 42 is arranged on the mounting seat 41, and the electromagnetic suction member 42 is used to magnetically cooperate with the magnetic guide rail 31 to realize the locking and unlocking of the sliding member 20 and the fixed member 10.

[0034] It is understood that the magnetic guide rail 31 can be made of a magnetic material capable of magnetic attraction to a magnet, such as iron, steel, or a nickel-based alloy. The longitudinal cross-section of the magnetic guide rail 31 can be T-shaped, dovetail-shaped, circular, or other shapes. The longitudinal cross-section of the slider 43 is adapted to the longitudinal cross-section of the magnetic guide rail 31. The electromagnetic element 42 is a magnet whose magnetism changes depending on the power on / off state. The electromagnetic element 42 can switch between a magnetic state and a demagnetized state depending on the power on / off state. When the electromagnetic element 42 is in the magnetic state, it is magnetic and can be attracted to the magnetic guide rail 31 to achieve locking between the sliding member 20 and the fixed member 10, thereby fixing the sliding member 20 to the fixed member 10. When the electromagnetic element 42 is in the demagnetized state, it is non-magnetic and can be separated from the magnetic guide rail 31 to achieve unlocking of the sliding member 20 from the fixed member 10, allowing the sliding member 20 to slide relative to the fixed member 10 along the first direction XX. The electromagnetic element 42 can be a powered magnet or a de-energized magnet. If the electromagnetic element 42 is a powered magnet, it is magnetic when powered on and de-energized when powered off. If the electromagnetic element 42 is a de-energized magnet, it is magnetic when powered off and de-energized when powered on. The electromagnetic element 42 can be shaped like a rectangular suction cup, a circular suction cup, or other shapes.

[0035] It should also be noted that, in the present application, the sliding member 20 realizes a sliding connection with the electromagnetic suction member 42 through the sliding cooperation of the slider 43 and the magnetic guide rail 31. Compared with the fixing member 10 and the sliding member 20, the magnetic suction guide rail 31, the slider 43 and the mounting seat 41 are smaller in size, and the processing difficulty of the magnetic suction guide rail 31, the slider 43 and the mounting seat 41 is low, making it easier to ensure the processing accuracy and assembly accuracy of the magnetic suction guide rail 31, the slider 43 and the mounting seat 41, so that the parallelism of the suction surface of the electromagnetic suction member 42 and the magnetic suction guide rail 31 is better, which can prevent the suction surface from having a large angle deviation, thereby improving the electromagnetic suction member 42 and the magnetic suction guide rail 31. At the same time, since the processing accuracy is easy to ensure, the initial gap between the electromagnetic suction component 42 and the magnetic guide rail 31 can be designed to be smaller and more uniform, thereby reducing the collision noise generated when the electromagnetic suction component 42 and the magnetic guide rail 31 are attracted, and even the initial gap between the electromagnetic suction component 42 and the magnetic guide rail 31 can be completely eliminated, thereby achieving silent attraction. Generally speaking, in the related art, the initial gap between the electromagnet and the magnet is usually about 5 mm, and the collision noise generated during the attraction collision is about 80 decibels. In the present application, the initial gap between the electromagnetic suction component 42 and the magnetic guide rail 31 can be less than 0.15 mm, and the collision noise generated during the attraction collision can be less than 60 decibels.

[0036] In addition, in the present application, the magnetic guide rail 31 is used to cooperate with the slider 43 and to magnetically cooperate with the electromagnetic suction component 42, so there is no need to set up additional magnets, thereby reducing the number of parts of the electromagnetic braking device and reducing the production cost of the electromagnetic braking device.

[0037] In some embodiments, the electromagnetic suction component 42 can be a power-off magnetic suction component. When the power is off, the electromagnetic suction component 42 is magnetic and is attracted to the magnetic guide rail 31 to achieve the locking of the sliding component 20 and the fixed component 10; when the electromagnetic suction component 42 is powered on, it is demagnetized and separated from the magnetic guide rail 31 to achieve the unlocking of the sliding component 20 and the fixed component 10. When the X-ray imaging device is not needed, the power of the electromagnetic suction component 42 can be turned off, so that the electromagnetic suction component 42 and the magnetic guide rail 31 remain attracted, which can reduce power consumption.

[0038] like Figure 2 As shown, in some embodiments, the fixed member 10 is disposed around the outer periphery of the sliding member 20 to form an accommodating cavity 11. The electromagnetic brake assembly 40 is disposed within the accommodating cavity 11 and is located between the inner sidewall of the fixed member 10 and the outer sidewall of the sliding member 20. The first direction XX is parallel to the length direction of the fixed member 10. It is understood that the fixed member 10 and the sliding member 20 can both be cylindrical structures, with the fixed member 10 being the outer cylinder and the sliding member 20 being the inner cylinder, which can reduce the overall volume of the electromagnetic brake device.

[0039] like Figure 2 As shown, in some embodiments, the sliding member 20 and the fixed member 10 can be slidably connected through the cooperation of the sliding rail 32 and the roller 33. The fixed member 10 is provided with a sliding rail 32 extending along the first direction XX, and the sliding member 20 is provided with a rotatable roller 33. The roller 33 cooperates with the sliding rail 32 and can roll along the sliding rail 32, so that the sliding of the sliding member 20 is more stable and smooth.

[0040] like Figure 3 and Figure 4 As shown, in some embodiments of the present application, a receiving groove 411 is provided on one side of the mounting base 41 close to the fixing member 10, and the electromagnetic suction member 42 is provided in the receiving groove 411. The receiving groove 411 provides a receiving space for the electromagnetic suction member 42, which can reduce the overall volume of the electromagnetic brake assembly 40, thereby reducing the overall volume of the electromagnetic brake device, and making the connection between the slider 43 and the magnetic guide rail 31 more convenient; in addition, the receiving groove 411 can provide a movable space for the electromagnetic suction member 42, facilitating the attraction and separation of the electromagnetic suction member 42 and the magnetic guide rail 31.

[0041] like Figure 4 and Figure 5As shown, in some embodiments, a slider 43 is provided on both opposite sides of the receiving groove 411 along the first direction XX, a positioning pin 441 is provided on the side of the mounting base 41 close to the slider 43, and a positioning hole 431 for inserting the positioning pin 441 is provided on the side of the slider 43 close to the mounting base 41. It can be understood that by providing at least two sliders 43 on both sides of the receiving groove 411 that slidably cooperate with the magnetic guide rail 31, the sliding member 20 can slide more smoothly and stably along the first direction XX. At the same time, the positioning of the positioning pin 441 and the positioning hole 431 can achieve the positioning and installation of the slider 43 on the mounting base 41, which can improve the installation accuracy of the slider 43, thereby ensuring that multiple sliders 43 are arranged in parallel along the first direction XX. Among them, there can be two, three, or more sliders 43.

[0042] In some embodiments, the slider 43 can be fixed on the mounting base 41 by a threaded member 442 such as a screw or bolt. The threaded member 442 can pass through the mounting base 41 from the side away from the slider 43 and then be inserted into the slider 43 and threadedly connected to the slider 43.

[0043] like Figure 5 and Figure 6 As shown, in some embodiments, the electromagnetic brake assembly 40 further includes a positioning gasket 45, which is located between the electromagnetic suction member 42 and the bottom wall of the accommodating groove 411 and is connected to the mounting base 41. The positioning gasket 45 can adjust the installation height of the electromagnetic suction member 42, thereby adjusting the initial gap between the electromagnetic suction member 42 and the magnetic guide rail 31. The positioning gasket 45 can also be used to adjust the inclination of the attraction surface of the electromagnetic suction member 42, so that the parallelism of the attraction surface of the electromagnetic suction member 42 and the magnetic guide rail 31 is better. Among them, one or more positioning gaskets 45 can be provided. When multiple positioning gaskets 45 are provided, multiple positioning gaskets 45 can be stacked along the second direction YY.

[0044] In some embodiments of the present application, the electromagnetic element 42 is capable of moving relative to the mounting base 41 in a second direction YY to move closer to or further away from the magnetic guide rail 31, thereby achieving engagement and separation with the magnetic guide rail 31. The second direction YY is perpendicular to the first direction XX. When the electromagnetic element 42 is magnetic, the electromagnetic element 42 moves along the second direction YY toward the magnetic guide rail 31 and engages with the magnetic guide rail 31. When the electromagnetic element 42 is demagnetized, the electromagnetic element 42 moves along the second direction YY away from the magnetic guide rail 31 and separates from the magnetic guide rail 31.

[0045] Among them, the electromagnetic brake assembly 40 also includes an elastic member 46, which is connected to the mounting seat 41 and the electromagnetic suction member 42. The elastic member 46 is used to provide the electromagnetic suction member 42 with a force to move in the direction away from the magnetic guide rail 31. It can be understood that when the electromagnetic suction member 42 is magnetic and the electromagnetic suction member 42 is attracted to the magnetic guide rail 31, the elastic member 46 is in a stretched or compressed state. When the electromagnetic suction member 42 is demagnetized, the elastic member 46 resets, providing the electromagnetic suction member 42 with a force to move in the direction away from the magnetic guide rail 31, so that the electromagnetic suction member 42 is separated from the magnetic guide rail 31, preventing the magnetic guide rail 31 and the electromagnetic suction member 42 from rubbing against each other when the sliding member 20 slides. Among them, the elastic member 46 can be a spring, a spring or a force block, and the preparation material of the elastic member 46 can be elastic metal, elastic rubber or plastic or other materials.

[0046] In some embodiments, the electromagnetic element 42 is provided with a mounting hole 421 extending along the second direction YY to pass through both sides of the electromagnetic element 42. The electromagnetic brake assembly 40 further includes a guide member 47, which includes a guide portion 471 and a limit portion 472. The guide portion 471 is provided through the mounting hole 421 and is connected to the mounting seat 41. The elastic member 46 is sleeved on the guide portion 471 and located within the mounting hole 421. The limit portion 472 is located on a side of the electromagnetic element 42 close to the magnetic guide rail 31 and is connected to the guide portion 471. The limit portion 472 is used to provide a limit for the electromagnetic element 42 and the elastic member 46. It should be noted that the guide member 47 provides a guide and limit for the electromagnetic element 42, allowing the electromagnetic element 42 to move stably along the second direction YY. The limit portion 472 can prevent the elastic member 46 from popping out of the mounting hole 421 and separating from the electromagnetic element 42, and can also prevent the electromagnetic element 42 from separating from the mounting seat 41.

[0047] Among them, the mounting hole 421 may include a first hole section and a second hole section arranged in sequence along the direction away from the magnetic guide rail 31, the second hole section is coaxially arranged with the first hole section, the aperture of the second hole section is smaller than the aperture of the first hole section, and is connected to the first hole section, the first end of the elastic member 46 abuts against the limiting portion 472, and the second end of the elastic member 46 abuts against the bottom wall surface of the first hole section.

[0048] In some embodiments, a avoidance groove 422 is provided on the side of the electromagnetic suction component 42 close to the magnetic guide rail 31, and the mounting hole 421 extends from the bottom wall of the avoidance groove 422 in the direction away from the magnetic guide rail 31. The limiting portion 472 is located in the avoidance groove 422, which can prevent the limiting portion 472 from affecting the attraction between the electromagnetic suction component 42 and the magnetic guide rail 31.

[0049] In some embodiments, the guide portion 471 passes through the positioning gasket 45 and is inserted into the mounting seat 41 , and is threadedly connected to the mounting seat 41 , thereby achieving installation of the positioning gasket 45 on the mounting seat 41 .

[0050] like Figure 2 、 Figure 5 and Figure 7 As shown, in some embodiments of the present application, the electromagnetic brake assembly 40 further includes an isolation seat 48, which is installed on the side of the fixed part 10 close to the sliding part 20. A card slot 481 is provided on the isolation seat 48, and the mounting seat 41 is snapped into the card slot 481 to space the mounting seat 41 from the fixed part 10. It can be understood that the isolation seat 48 can separate the mounting seat 41 from the fixed part 10, so that there is a certain gap between the mounting seat 41 and the fixed part 10, and the mounting seat 41 and the electromagnetic suction member 42 are not in contact with the fixed part 10, so that the errors such as non-parallelism and deflection caused by processing and assembly of the fixed part 10 and the sliding part 20 have less influence on the electromagnetic suction member 42. It should also be noted that Figure 7 For example, the side of the isolation seat 48 close to the fixing member 10 is the installation surface (eg Figure 7 ), the mounting surface is used to contact the fixing member 10, and the isolation seat 48 can raise the side of the mounting seat 41 close to the fixing member 10, so that the side of the mounting seat 41 close to the fixing member 10 is separated from the fixing member 10.

[0051] In some embodiments, a locking protrusion 482 is provided on the groove side walls on opposite sides of the slot 481, and the mounting seat 41 is clamped between the two locking protrusions 482, and the mounting seat 41 is spaced apart from the groove side walls of the slot 481. The mounting seat 41 is fixed by the locking protrusion 482, which can reduce the contact area between the mounting seat 41 and the isolation seat 48, thereby reducing the influence of errors such as non-parallelism and deflection of the isolation seat 48 caused by processing and assembly on the electromagnetic suction component 42; in addition, the movement of the mounting seat 41 is made more convenient, and the mounting seat 41 can be adaptively adjusted to ensure the parallelism of the electromagnetic suction component 42 and the magnetic guide rail 31.

[0052] Specifically, if Figure 7 As shown, the slot 481 can extend along the second direction YY to penetrate both sides of the isolation seat 48, and the slot 481 extends along the third direction ZZ to penetrate one side of the isolation seat 48 to form a gap. At this time, the entire slot 481 is roughly "C"-shaped, and the third direction ZZ is perpendicular to the first direction XX and the second direction YY. Figure 5 Taking the perspective shown as an example, when installing the mounting base 41, the mounting base 41 can be inserted into the slot 481 from above along the second direction YY. Alternatively, the mounting base 41 can be inserted into the slot 481 from the side of the isolation base 48 through the notch. More specifically, the latching protrusion 482 can be disposed on the sidewall of the slot 481, near the notch. Of course, in other embodiments, the entire slot 481 can be roughly "mouth"-shaped or other shapes.

[0053] Secondly, based on the above-mentioned electromagnetic braking device, the present application also provides an X-ray imaging device, including an X-ray detector and an electromagnetic braking device as described in any one of the above-mentioned embodiments, wherein the X-ray detector is connected to the sliding member 20 and can move following the sliding member 20.

[0054] The above are only preferred embodiments of the present application and are not intended to limit the present application. Any modifications, equivalent replacements, and improvements made within the spirit and principles of the present application should be included in the scope of protection of the present application.

Claims

1. An electromagnetic brake device, characterized in that: include: fixings; a sliding member, slidably connected to the fixed member, the sliding member being capable of sliding relative to the fixed member along a first direction, a magnetic guide rail being installed on a side of the sliding member close to the fixed member, the magnetic guide rail extending along the first direction; and An electromagnetic brake assembly is arranged on a side of the fixed part close to the sliding part. The electromagnetic brake assembly includes a mounting seat and an electromagnetic suction member. The mounting seat is connected to the fixed part. A slider that slides with the magnetic guide rail is installed on the side of the mounting seat close to the magnetic guide rail. The slider can slide along the first direction on the magnetic guide rail. The electromagnetic suction member is arranged on the mounting seat. The electromagnetic suction member is used to magnetically cooperate with the magnetic guide rail to achieve locking and unlocking of the sliding part and the fixed part.

2. The electromagnetic brake device according to claim 1, characterized in that A receiving groove is provided on one side of the mounting seat close to the fixing member, and the electromagnetic attraction member is arranged in the receiving groove.

3. The electromagnetic brake device according to claim 2, characterized in that The electromagnetic brake assembly further comprises: The positioning gasket is located between the electromagnetic attraction component and the bottom wall of the accommodating groove and is connected to the mounting seat.

4. The electromagnetic brake device according to claim 2, characterized in that The accommodating groove is provided with the sliders on both opposite sides along the first direction, the mounting seat is provided with a positioning pin on one side close to the slider, and the slider is provided with a positioning hole for inserting the positioning pin on one side close to the mounting seat.

5. The electromagnetic brake device according to claim 1, wherein The electromagnetic attraction member can move relative to the mounting base along a second direction to approach or move away from the magnetic attraction guide rail, and the second direction is perpendicular to the first direction; the electromagnetic brake assembly further includes: An elastic member is connected to the mounting base and the electromagnetic attraction member, and is used to provide the electromagnetic attraction member with a force to move in a direction away from the magnetic attraction guide rail.

6. The electromagnetic brake device according to claim 5, characterized in that The electromagnetic suction member is provided with a mounting hole extending along the second direction to pass through both sides of the electromagnetic suction member, and the electromagnetic brake assembly further includes: The guide member includes a guide portion and a limiting portion. The guide portion is passed through the mounting hole and connected to the mounting seat. The elastic member is sleeved on the guide portion and is located in the mounting hole. The limiting portion is located on the side of the electromagnetic suction member close to the magnetic guide rail and is connected to the guide portion. The limiting portion is used to provide a limit for the electromagnetic suction member and the elastic member.

7. The electromagnetic brake device according to claim 6, characterized in that A avoidance groove is provided on one side of the electromagnetic attraction component close to the magnetic attraction guide rail, the mounting hole extends from the bottom wall of the avoidance groove in a direction away from the magnetic attraction guide rail, and the limiting portion is located in the avoidance groove.

8. The electromagnetic brake device according to claim 1, wherein The electromagnetic brake assembly further comprises: The isolation seat is installed on a side of the fixing member close to the sliding member. The isolation seat is provided with a card slot, and the mounting seat is connected to the card slot to space the mounting seat from the fixing member.

9. The electromagnetic brake device according to claim 8, characterized in that The slot side walls on two opposite sides of the slot are both provided with clamping protrusions, the mounting seat is clamped between the two clamping protrusions, and the mounting seat is spaced apart from the slot side walls of the slot.

10. The electromagnetic brake device according to any one of claims 1 to 9, characterized in that: The fixing member is arranged around the outer circumference of the sliding member to form a receiving cavity. The electromagnetic brake assembly is arranged in the receiving cavity and is located between the inner wall of the fixing member and the outer wall of the sliding member. The first direction is parallel to the length direction of the fixing member.

11. The electromagnetic brake device according to any one of claims 1 to 9, characterized in that: The electromagnetic attraction member is a de-energized magnet. When the power is off, the electromagnetic attraction member is magnetic and is attracted to the magnetic guide rail to achieve the locking of the sliding member and the fixed member. When the power is on, the electromagnetic attraction member is demagnetized and separated from the magnetic guide rail to achieve the unlocking of the sliding member and the fixed member.

12. An X-ray imaging device, characterized in that: The electromagnetic brake device comprises an X-ray detector and the electromagnetic brake device according to any one of claims 1 to 11, wherein the X-ray detector is connected to the sliding member.

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