A power-off locking mobile device for ionizing radiation testing

Abstract

The invention discloses a power-off locking moving device for ionizing radiation testing, which belongs to the technical field of radiation testing in ionizing radiation sites, and comprises a lifting platform for adjusting the height of a tested object, wherein the lifting platform is slidably mounted on a lateral moving platform located on a lateral moving device, and the lateral moving device is mounted on a horizontal moving platform located on a horizontal moving device. The invention uses a power-off self-locking device to keep the moving device locked with a guide rail when power is off, thereby improving the accuracy of the test while reducing electromagnetic interference, and the power-off self-locking mechanism cooperates with the side wall of the guide rail and can be applied to locking at any position, thereby increasing the operability of the power-off self-locking.

Description

Technical Field

[0001] The invention relates to the technical field of radiation testing in ionizing radiation places, and in particular to a power-off locking mobile device for ionizing radiation testing. Background Art

[0002] In ionizing radiation testing devices, the proportional relationship between the radiation dose rate and the distance from the radiation source is usually tested by adjusting the position of the object under test and the X-ray standard radiation device. In actual testing, the position of the object under test needs to be constantly adjusted to achieve testing at different positions. The automated equipment used to move the object under test includes a drive motor or electromagnetic device for driving the object under test to move, which will produce weak electromagnetic interference to the ionizing radiation test. The conventional method to reduce such electromagnetic interference is to cut off the power supply of the motor or electromagnetic device. When the object under test moves to the specified position, the power supply of the motor is cut off to reduce electromagnetic interference and optimize the detection effect.

[0003] However, after the power is cut off, the automated equipment used to move the object under test will move according to the device's own properties. For example, after the object under test is adjusted to a specified height, it will drop slightly due to the weight of the device or the object under test, or it may be affected by the external environment. For example, when the X-ray standard radiation device is in operation, the moving device may move slightly laterally or vibrate, affecting the accuracy of the test. Therefore, in order to keep the object under test stable during the test, it is necessary to design a moving device that can remain locked when the power is off. Summary of the invention

[0004] In view of the above problems, the present invention proposes a power-off locking moving device for ionizing radiation testing, comprising a lifting platform for adjusting the height of a test object, wherein the lifting platform is slidably mounted on a lateral moving platform located on a lateral moving device, wherein the lateral moving device is mounted on a horizontal moving platform located on a horizontal moving device, wherein the horizontal moving platform is slidably mounted on a guide rail arranged in parallel, wherein a power-off self-locking mechanism is mounted on a side end of the horizontal moving platform, wherein a push rod matched and fixed with any part of a side wall of the guide rail is disposed at an end of the power-off self-locking mechanism, wherein a fixing device for fixing the push rod is disposed on the side wall of the guide rail, wherein when the power-off self-locking mechanism is powered off, the push rod is matched and locked with the side wall of the guide rail, and the push rod maintains a self-locking state inside the power-off self-locking mechanism;

[0005] Preferably, the power-off self-locking mechanism includes a drive motor, a transmission gear and a cam which are connected in sequence. When the power-off self-locking mechanism is energized, the drive motor drives the cam to rotate, and the cam drives the rocker arm to rotate. The rocker arm pushes the push rod to fit the side wall of the guide rail. When the locking position is reached, the cam supports the rocker arm to the extreme position, and the cam is locked with the rocker arm. When the lock needs to be released, the drive motor drives the cam to rotate, and the push rod is retracted through the spring installed on the push rod.

[0006] Preferably, the fixing device on the guide rail comprises an anti-slip device arranged on the side wall of the guide rail and used to increase friction.

[0007] Preferably, the anti-skid device is a flexible anti-skid pad attached to the side wall of the guide rail.

[0008] Preferably, the fixing device on the guide rail is a locking device arranged on the inner side of the guide rail, and the locking device includes a pair of push plates installed opposite to each other up and down, and a telescopic rod is installed on each push plate at an equal distance, and a second spring is installed in the telescopic rod. The front end of the push plate is a wedge-shaped structure, and the rear end is provided with a groove for engaging the push rod. The side end of the guide rail is provided with a transverse slot for the push rod to enter, and the end of the telescopic rod is provided with a driving device. When fixed, the push rod enters the side wall of the guide rail through the transverse slot, and the telescopic rod is telescoped to both sides by supporting the wedge-shaped structure, and the end of the push rod is engaged in the groove. When released, the telescopic rod is driven to extend to both sides by the driving device.

[0009] Preferably, the driving device is a pneumatic cylinder or a hydraulic cylinder.

[0010] Preferably, the lateral moving device comprises a lateral driving motor and a screw transmission device, and the lateral moving platform is driven to move by the lateral driving motor in cooperation with the screw transmission device.

[0011] Preferably, the horizontal moving device includes a horizontal driving motor and a rack, and the horizontal driving motor cooperates with the rack transmission device to drive the horizontal moving platform to move.

[0012] Preferably, sensors for measuring the displacement of the lifting platform are provided on both sides of the guide rail.

[0013] The beneficial effects of the present invention include: the present invention uses a power-off self-locking device to keep the moving device locked with the guide rail when the power is off, thereby improving the accuracy of the test while reducing electromagnetic interference, and the power-off self-locking mechanism cooperates with the side wall of the guide rail and can be suitable for locking at different positions, thereby increasing the operability of the power-off self-locking. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The above and other features, advantages and aspects of the embodiments of the present disclosure will become more apparent with reference to the following detailed description in conjunction with the accompanying drawings. Throughout the accompanying drawings, the same or similar reference numerals represent the same or similar elements. It should be understood that the drawings are schematic and that components and elements are not necessarily drawn to scale.

[0015] Figure 1 A schematic diagram of a power-off locking moving device for ionizing radiation testing according to the present invention;

[0016] Figure 2 A perspective view of the installation of the power-off self-locking mechanism of the present invention;

[0017] Figure 3 Schematic diagram of the guide rail of the present invention. DETAILED DESCRIPTION

[0018] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and the best embodiment. It should also be noted that, for the sake of ease of description, only the parts related to the present invention are shown in the accompanying drawings.

[0019] Example 1

[0020] like Figure 1 As shown, a power-off locking moving device for ionizing radiation testing of the present invention comprises a lifting platform 1 for adjusting the height of the object to be tested, the lifting platform 1 is slidably mounted on a lateral moving platform 3 located on a lateral moving device 2, the lateral moving device 2 is mounted on a horizontal moving platform 5 located on a horizontal moving device 4, the horizontal moving platform 5 is slidably mounted on a guide rail 6 arranged in parallel, a power-off self-locking mechanism 7 is mounted on the side end of the horizontal moving platform 5, a push rod 12 is provided at the end of the power-off self-locking mechanism 7 and is matched and fixed with any part of the side wall of the guide rail 6, and a fixing device for fixing with the push rod 12 is provided on the side wall of the guide rail 6, when the power-off self-locking mechanism 7 is powered off, the push rod 12 is matched and locked with the side wall of the guide rail 6, and the push rod 12 remains in a self-locking state inside the power-off self-locking mechanism 7;

[0021] like Figure 2 As shown, the power-off self-locking mechanism 7 includes a driving motor 8, a transmission gear 9 and a cam 10 that are sequentially connected. When the power-off self-locking mechanism 7 is powered on, the driving motor 8 drives the cam 10 to rotate, the cam 10 drives the swing rod 11 to rotate, and the swing rod 11 pushes the push rod 12 to fit the side wall of the guide rail 6. When the locking position is reached, the cam 10 supports the swing rod 11 to the limit position, and the cam 10 and the swing rod 11 are locked. When the lock needs to be released, the driving motor 8 drives the cam 10 to rotate, and the push rod is retracted through the first spring 13 installed on the push rod 12;

[0022] Preferably, the contact surface between the guide rail 6 and the push rod 12 is provided with an anti-skid device for increasing friction. The anti-skid device is a flexible anti-skid pad attached to the side wall of the guide rail 6.

[0023] Preferably, the flexible anti-skid pad is made of a flexible material. When the push rod 12 is in contact with the flexible anti-skid pad, the resistance to horizontal movement can be increased while protecting the side wall of the guide rail.

[0024] When in use, after the lateral moving device 2 and the horizontal moving device 4 are adjusted to the specified positions, the driving motor 8 in the power-off self-locking mechanism 7 drives the push rod 12 to support the flexible anti-slip pads on the side walls of the guide rail 6. When the support reaches the limit position, the friction resistance of the cam 10 in the rotation direction of the rocker arm 11 is greater than the effective component force, causing the cam 10 and the rocker arm 11 to self-lock and lock, so that the horizontal moving device 4 and the guide rail 6 are locked. When the power is turned off for ionizing radiation testing, the horizontal moving device 4 and the guide rail 6 can still be kept locked. When the test is completed and the lock needs to be released, the driving motor 8 drives the cam 8 to rotate in the opposite direction to release the lock, thereby releasing the lock between the horizontal moving device 4 and the guide rail 6.

[0025] Preferably, the lateral moving device 2 includes a lateral driving motor and a screw transmission device, and the lateral moving platform 3 is driven to move by the lateral driving motor in cooperation with the screw transmission device. The horizontal moving device 4 includes a horizontal driving motor, and the horizontal moving device 4 includes c and a rack 16, and the horizontal moving platform 5 is driven to move by the horizontal driving motor in cooperation with the rack transmission device. Sensors for measuring the displacement of the lifting platform 1 are provided on both sides of the guide rail 6.

[0026] Preferably, the drive motor 8 and the lateral drive motor and the lateral drive motor use the same power supply, so that when the power is cut off, the motor loses power while the power-off self-locking mechanism can continue to remain locked, realizing the power-off self-locking function.

[0027] Example 2

[0028] A power-off locking moving device for ionizing radiation testing of the present invention comprises a lifting platform 1 for adjusting the height of a test object, the lifting platform 1 is slidably mounted on a lateral moving platform 3 located on a lateral moving device 2, the lateral moving device 2 is mounted on a horizontal moving platform 5 located on a horizontal moving device 4, the horizontal moving platform 5 is slidably mounted on a parallel guide rail 6, a power-off self-locking mechanism 7 is mounted on the side end of the horizontal moving platform 5, a push rod 12 is provided at the end of the power-off self-locking mechanism 7 and is matched and fixed with any part of the side wall of the guide rail 6, a fixing device is provided on the side wall of the guide rail 6 for fixing with the push rod 12, when the power-off self-locking mechanism 7 is powered off, the push rod 12 is matched and locked with the side wall of the guide rail 6, and the push rod 12 remains in a self-locking state inside the power-off self-locking mechanism 7;

[0029] The power-off self-locking mechanism 7 includes a drive motor 8, a transmission gear 9 and a cam 10 which are connected in sequence. When the power-off self-locking mechanism 7 is energized, the drive motor 8 drives the cam 10 to rotate, the cam 10 drives the rocker arm 11 to rotate, and the rocker arm 11 pushes the push rod 12 to fit the side wall of the guide rail 6. When the locking position is reached, the cam 10 supports the rocker arm 11 to the extreme position, and the cam 10 and the rocker arm 11 are locked. When the lock needs to be released, the drive motor 8 drives the cam 10 to rotate, and the push rod is retracted through the first spring installed on the push rod 12.

[0030] like Figure 3 As shown, the fixing device on the guide rail 6 is a locking device arranged on the inner side of the guide rail 6, and the locking device is built into the inner side of the side wall of the guide rail 6. The locking device includes a pair of push plates 19 installed opposite to each other up and down, and each push plate 19 is installed with an equidistant telescopic rod 14, and a second spring 15 is installed in the telescopic rod 14. The front end of the push plate 19 is a wedge-shaped structure, and the rear end is provided with a groove 18 for engaging the push rod 12. The side end of the guide rail 6 is provided with a transverse slot 17 for the push rod 12 to enter, and the end of the telescopic rod 14 is provided with a driving device. When fixed, the push rod 12 enters the side wall of the guide rail 6 through the transverse slot 17, and the telescopic rod 14 is telescoped to both sides by supporting the wedge-shaped structure, and the end of the push rod 12 supports the side wall of the guide rail 6 while being engaged in the groove 18. The stability of the push rod 12 is reinforced by the support of the telescopic rods 14 on both sides. When released, the telescopic rod 14 is driven to extend to both sides by the driving device, and the driving device is a cylinder or a hydraulic cylinder.

[0031] In some embodiments of the present disclosure, the locking device includes a pair of push plates 19 installed opposite to each other in the upper and lower directions, and each push plate 19 is installed with an equidistant telescopic rod 14, and a second spring 15 is installed in the telescopic rod 14. The front end of the push plate 19 is a wedge-shaped structure, and the rear end is a triangular structure, and the telescopic rod 14 is a telescopic rebound structure. When fixed, the push rod 12 enters the side wall of the guide rail 6 through the transverse slot 17, and the telescopic rod 14 is telescopic to both sides by supporting the wedge-shaped structure, and the end of the push rod 12 is supported on the side wall of the guide rail 6. The stability of the push rod 12 is reinforced by supporting the telescopic rods 14 on both sides. When released, the push rod 12 slides out through the triangular structure to push open the telescopic rod 14, and then exits the guide rail 6.

[0032] When in use, after the lateral moving device 2 and the horizontal moving device 4 are adjusted to the specified positions, the driving motor 8 in the power-off self-locking mechanism 7 drives the push rod 12 to hold the locking device of the guide rail 6, and the push rod 12 enters the inner side of the guide rail 6 through the lateral slot 17, and pushes open the push plate 19 and the groove 18 to cooperate with each other. The thrust of the second spring 15 increases the cooperation between the push plate 19 and the push rod 12, thereby realizing the locking of the push rod 12. When it is necessary to disengage, the inner side of the groove is a triangular slide-out structure, which can slide out the push rod 12, and the push plate 19 is a long strip structure, which can be suitable for locking at different positions, thereby increasing the practicability of the locking.

[0033] When the cam 10 and the rocker arm 11 are supported to the limit position, the friction resistance of the cam 10 in the rotation direction of the rocker arm 11 is greater than the effective component force, causing the cam 10 and the rocker arm 11 to self-lock, so that the horizontal moving device 4 and the guide rail 6 are locked. When the power is turned off for ionizing radiation testing, the horizontal moving device 4 and the guide rail 6 can still be kept locked. When the test is completed and the lock needs to be released, the drive motor 8 drives the cam 10 to rotate in the opposite direction to release the lock, thereby releasing the lock between the horizontal moving device 4 and the guide rail 6.

[0034] Preferably, the lateral moving device 2 includes a lateral driving motor and a screw transmission device, and the lateral driving motor cooperates with the screw transmission device to drive the lateral moving platform 3 to move. The horizontal moving device 4 includes a horizontal driving motor and a screw transmission device, and the horizontal driving motor cooperates with the screw transmission device to drive the horizontal moving platform 5 to move. Sensors for measuring the displacement of the lifting platform 1 are provided on both sides of the guide rail 6.

[0035] Preferably, the drive motor 8 and the lateral drive motor and the lateral drive motor use the same power supply, so that when the power is cut off, the motor loses power while the power-off self-locking mechanism 7 can continue to remain locked, realizing the power-off self-locking function.

[0036] It should be understood by those skilled in the art that the above embodiments are only for the purpose of clearly illustrating the present invention, and are not intended to limit the scope of the present invention. For those skilled in the art, other changes or modifications may be made based on the above invention, and these changes or modifications are still within the scope of the present invention.

Claims

1. A power-off locking mobile device for ionizing radiation testing, characterized in that: The invention comprises a lifting platform (1) for adjusting the height of an object to be measured, wherein the lifting platform (1) is slidably mounted on a transverse moving platform (3), the transverse moving platform (3) is cooperatively mounted on a horizontal moving platform (5), the horizontal moving platform (5) is slidably mounted on a guide rail (6) arranged in parallel, a power-off self-locking mechanism (7) is mounted on the side end of the horizontal moving platform (5), a push rod (12) is provided at the end of the power-off self-locking mechanism (7) and is cooperatively fixed to any part of the side wall of the guide rail (6), the side wall of the guide rail (6) is provided with a fixing device for fixing the push rod (12), when the power-off self-locking mechanism (7) is powered off, the push rod (12) presses against the side wall of the guide rail (6), so that the horizontal moving platform (5) is fixed to the guide rail (6), and the push rod (12) remains in a self-locking state inside the power-off self-locking mechanism (7); The power-off self-locking mechanism (7) comprises a driving motor (8), a transmission gear (9) and a cam (10) which are connected in sequence. When the power-off self-locking mechanism (7) is powered on, the driving motor (8) drives the cam (10) to rotate, the cam (10) drives the swing rod (11) to rotate, the swing rod (11) pushes the push rod (12) to fit the side wall of the guide rail (6), when the locking position is reached, the cam (10) supports the swing rod (11) to the limit position, the cam (10) and the swing rod (11) are locked, when the lock needs to be released, the driving motor (8) drives the cam (10) to rotate, and the spring (13) installed on the push rod (12) drives the push rod to retract; The fixing device on the guide rail (6) is a locking device arranged on the inner side of the guide rail (6), and the locking device comprises a pair of push plates (19) installed opposite to each other in upper and lower directions, each push plate (19) is installed with an equidistant telescopic rod (14), and a second spring (15) is installed in the telescopic rod (14). The front end of the push plate (19) is a wedge-shaped structure, and the rear end is provided with a groove (18) for engaging the push rod (12). The side end of the guide rail (6) is provided with a transverse slot (17) for the push rod (12) to enter, and the end of the telescopic rod (14) is provided with a driving device. When fixed, the push rod (12) enters the side wall of the guide rail (6) through the transverse slot (17), and the telescopic rod (14) is extended to both sides by supporting the wedge-shaped structure, and the end of the push rod (12) is engaged in the groove (18).

2. The power-off locking moving device for ionizing radiation testing according to claim 1, characterized in that: The fixing device on the guide rail (6) comprises an anti-slip device which is arranged on the side wall of the guide rail (6) and is used to increase friction.

3. The power-off locking moving device for ionizing radiation testing according to claim 2, characterized in that: The anti-skid device is a flexible anti-skid pad that fits on the side wall of the guide rail (6).

4. The power-off locking moving device for ionizing radiation testing according to claim 1, characterized in that: The groove (18) is a triangular structure.

5. The power-off locking moving device for ionizing radiation testing according to claim 1, characterized in that: The groove (18) is a square structure, and a driving device is provided at the end of the telescopic rod (14), and the driving device is a cylinder or a hydraulic cylinder.

6. The power-off locking moving device for ionizing radiation testing according to claim 1, characterized in that: The lifting platform (1) is slidably mounted on a transverse moving platform (3) located on a transverse moving device (2); the transverse moving device (2) comprises a transverse driving motor and a screw transmission device, and the transverse moving platform (3) is driven to move by the transverse driving motor in cooperation with the screw transmission device; the transverse moving device (2) is mounted on a horizontal moving platform (5) located on a horizontal moving device (4).

7. The power-off locking moving device for ionizing radiation testing according to claim 6, characterized in that: The horizontal moving device (4) comprises a horizontal driving motor and a rack (16), and the horizontal driving motor cooperates with the rack transmission device to drive the horizontal moving platform (5) to move.

8. The power-off locking moving device for ionizing radiation testing according to claim 1, characterized in that: Sensors for measuring the displacement of the lifting platform (1) are provided on both sides of the guide rail (6).

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