A vibration isolation device for high-precision detection equipment

Abstract

A vibration isolation device for high-precision detection equipment, comprising a gantry transmission frame, a gantry outer shell frame and an interconnection component. The transmission frame and the outer shell frame are nested with each other, leaving a gap. The transmission frame includes a transmission base, transmission columns, a transmission bottom connecting beam and a transmission top connecting beam. Transmission components are installed on the transmission columns, and sensors are installed on the transmission components through structural members and guide rails and move linearly driven by a motor. The outer shell frame includes an outer shell base, outer shell side columns, an outer shell top frame, an outer shell bottom connecting beam and an outer shell top connecting beam. The outer shell is installed in the outer shell frame to shield internal parts. The interconnection component includes cushion blocks, screws and angle codes. During transportation, the angle codes rigidly connect the transmission base - outer shell base and the transmission top connecting beam - outer shell top connecting beam. During operation, the interconnection component is removed to make the transmission frame and the outer shell frame not in contact, isolating vibration.

Description

Technical Field

[0001] The present invention belongs to the technical field of detection, and particularly relates to a coupling structure technology. Background Art

[0002] High-precision detection devices are often used for security control in various places. Through non-contact means, they prompt or identify prohibited or dangerous items carried by the detected personnel. To meet safety and appearance requirements, a complete housing is required outside the device as a shield to prevent people from accidentally touching the internal high-voltage or transmission components. To increase the detection area, the detection sensors in large detection devices need to perform scanning movements driven by a transmission mechanism. Detection signals such as electromagnetic waves emitted by the sensors pass through the housing to detect the detection object.

[0003] In traditional designs, for the convenience of overall transportation, the external housing and the internal transmission mechanism are often installed on the same rigid frame. The movement of the transmission mechanism will inevitably cause vibration of the housing. The sensors of high-precision detection devices are quite sensitive to the vibration of the housing. To meet the performance requirements, the vibration of the housing needs to be controlled at a very low level, resulting in great difficulty in frame design. Summary of the Invention

[0004] In order to solve the problems existing in the prior art, the present invention proposes a vibration isolation device for high-precision detection devices, and designs the connection state between the transmission mechanism and the outer shell as a switchable mode of rigid connection and non-connection, respectively meeting the requirements of overall handling during transportation and vibration isolation during operation. To achieve the above purpose, the present invention adopts the following technical solutions.

[0005] The device includes a gantry transmission frame, a gantry outer shell frame and an interconnection component. The transmission frame and the outer shell frame are nested with each other, leaving a gap. The transmission frame includes a transmission base, transmission columns, a transmission bottom connecting beam and a transmission top connecting beam. The transmission components are installed on the transmission columns. The sensor is installed on the transmission components through structural parts and guide rails and performs a linear motion driven by a motor. The outer shell frame includes an outer shell base, outer shell side columns, an outer shell top frame, an outer shell bottom connecting beam and an outer shell top connecting beam. The outer shell is installed on the outer shell frame to shield the internal parts. The interconnection component includes a cushion block, a screw and an angle code. During transportation, the angle code rigidly connects the transmission base - outer shell base and the transmission top connecting beam - outer shell top connecting beam. During operation, the interconnection component is removed to make the transmission frame and the outer shell frame not in contact and isolate vibration.

[0006] Preferably, the outer shell base is designed as an internally hollow annular structure, and the transmission base is designed as an inverted step form and nested in the outer shell base, leaving a gap with the outer ring of the outer shell base. The upward flanging is suspended and covers the upper end face of the outer ring of the outer shell base. During transportation, the cushion block fills the gap, and the screw fixedly connects the outer shell base and the transmission base. During operation, the cushion block and the screw are removed, and the two sets of bases are not in contact.

[0007] The inverted step form of the drive base is designed as a flat plate, and the spacer block is replaced by a transition block.

[0008] Preferably, the spacer block is designed in an L shape for easy installation and removal. Threaded holes corresponding to the installation positions of each spacer block are designed on the drive base. When installing and removing the spacer block, screws are screwed in to jack up the drive frame, facilitating operation.

[0009] Preferably, the corner code is designed as a double-sided long waist hole to match the position deviation between the top connecting beam of the drive and the top connecting beam of the housing, facilitating installation.

[0010] Preferably, several buffer spacer blocks made of rubber are installed around the drive base along the perimeter of the housing base to prevent the micro-displacement of the drive frame and avoid rigid connection.

[0011] Preferably, a set of protection screws is designed in the overlapping area between the drive base and the housing base. The protection screws pass through the through holes on the drive base and are installed on the housing base. The through holes are slightly thicker than the screw rod and slightly thinner than the screw head. The screw head is slightly higher than the upper plane of the drive base to ensure that the protection screws do not contact the drive base and avoid large-scale movement of the drive frame.

[0012] A gasket is added between the protection screw and the drive base to correspondingly adjust the screw length.

[0013] The beneficial effects of the present invention: It can be transported as a whole, decoupled from each other during operation, switched between two states, without the need to add various means such as hardware filtering and algorithm filtering, relaxing the vibration control index requirements for the design of the drive system, completely avoiding the vibration of the housing caused by the drive mechanism, and significantly improving the detection accuracy; Brief Description of the Drawings

[0014] Figure 1 It is a structural diagram of the device, Figure 2 It is a structural diagram of the drive frame, Figure 3 It is a structural diagram of the housing frame, Figure 4 It is a structural diagram of the interconnection component, Figure 5 It is a schematic diagram of the installation of the interconnection gap spacer block, Figure 6 It is a schematic diagram of the installation of the protection screw, Figure 7 It is a schematic diagram of the installation of the transition block.

[0015] Reference Signs: 0 - Vibration Isolation Device, 1 - Drive Frame, 2 - Housing Frame, A - Drive Mechanism, B - Housing, C - Sensor, 11 - Drive Base, 12 - Drive Column, 13 - Top Connecting Beam of Drive, 14 - Bottom Connecting Beam of Drive, 21 - Housing Base, 22 - Housing Side Column, 23 - Top Frame of Housing, 24 - Top Connecting Beam of Housing, 25 - Bottom Connecting Beam of Housing, 31 - Spacer Block, 32 - Top Corner Code, 33 - Protection Screw, 34 - Buffer Spacer Block, 36 - Transition Block. Detailed Description of the Invention

[0016] The technical solution of the present invention will be specifically described below in conjunction with the accompanying drawings.

[0017] The structure of the isolation device 0 is as Figure 1 shown, and it is composed of a transmission frame 1, a housing frame 2 and an interconnection component, on which a transmission mechanism A, a housing B and a sensor C are installed.

[0018] The transmission frame 1 serves as the installation frame for the transmission mechanism A and the sensor C, and its structure is as Figure 2 shown, and it is composed of a transmission base 11, transmission columns 12, a transmission top connecting beam 13 and a transmission bottom connecting beam 14.

[0019] The transmission base 11 directly lands during operation and is the bearing base of the entire transmission system; the transmission columns 12 are the installation bases for the transmission components, and the sensor can perform mechanical scanning under the drive of the transmission components; the transmission system adopts a scheme combining a linear motor and a linear guide rail, and both the motor and the guide rail are attached and installed on the side of the transmission column 12 to drive the sensor to scan up and down; the transmission top connecting beam 13 and the transmission bottom connecting beam 14 are strengthening structures.

[0020] The housing frame 2 serves as the installation foundation for the housing B, and its structure is as Figure 3 shown, and it is composed of a housing base 21, housing side columns 22, a housing top frame 23, a housing top connecting beam 24 and a housing bottom connecting beam 25.

[0021] The housing base 21 directly lands and is designed as a hollow structure, which is directly nested outside the transmission base 11; the housing top frame 23, the housing top connecting beam 24 and the housing bottom connecting beam 25 in the housing frame 2 and the transmission top connecting beam 13 and the transmission bottom connecting beam 14 in the transmission frame 1 are arranged in a staggered manner, and there are gaps between them.

[0022] The structure of the interconnection component is as Figure 4 shown, and it is composed of several cushion blocks 31, top corner codes 32, protection screws 33 and buffer cushion blocks 34.

[0023] The cushion blocks 31 and the top corner codes 32 achieve rigid interconnection of the two frames during transportation, as Figure 5 shown, and they are removed during operation; during transportation, a group of cushion blocks 31 are inserted into the gap in the overlapping area of the transmission base 11 and the housing base 21, and the two are fixed by installation screws to achieve bottom rigid connection between the two frames; a group of top corner codes 32 and screws connect and fix the transmission top connecting beam 13 and the housing top frame 23 to achieve top rigid connection between the two frames, thereby integrating the two frames.

[0024] The protection screws 33 play a protective role and are installed in the overlapping area of the housing base 21 and the transmission base 11, as Figure 6As shown, a through hole passing through the drive base 11 and a threaded hole fixed to the lower housing base 21; the diameter of the screw rod of the protection screw 33 is slightly smaller than the diameter of the through hole of the drive base 11, and the height of the screw head is slightly higher than the upper plane of the drive base 11, not in direct contact with the drive base 11 and leaving a gap.

[0025] The buffer cushion block 34 is made of rubber material and is fixed to the housing base 21 along the periphery of the drive base 11, preventing the micro-displacement of the drive frame 1 while avoiding the rigid connection between the two frames.

[0026] Threaded holes are designed at the installation position of the cushion block 31 near the drive base 11. When it is necessary to disassemble and assemble the cushion block 31, screws can be screwed into the above threaded holes to slightly lift the drive frame 1, facilitating disassembly and assembly.

[0027] The cushion block 31 is designed in an L shape for easy disassembly and assembly. The top corner code 32 is designed in an L shape and has oblong holes on both sides for adapting to the position deviation between the drive top connecting beam 13 and the housing top frame 23.

[0028] When the weight of the sensor itself is light and the scanning acceleration is small, the disturbance of the sensor to the drive frame during scanning is small, and the protection screw 33 and the buffer cushion block 34 can be not provided.

[0029] In order to reduce the processing complexity, the cross-section of the drive base 11 can be simplified from an inverted stepped shape to a flat plate, and the cushion block 31 is replaced by a transition block 36 between the drive base 11 and the housing base 21. During transportation, the two bases are directly connected by the transition block 36.

[0030] The above are the embodiments of the present invention and do not limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention are all included in the protection scope of the present invention.

Claims

1. A vibration isolation device for high-precision detection equipment, characterized in that, Comprising: Comprising a gantry drive frame, a gantry housing frame and an interconnection component. The drive frame and the housing frame are nested with each other with a gap left. The drive frame includes a drive base, drive columns, a drive bottom connecting beam and a drive top connecting beam. The drive components are installed on the drive columns, and the sensors are installed on the drive components through structural parts and guide rails and perform linear motion driven by a motor. The housing frame includes a housing base, housing side columns, a housing top frame, a housing bottom connecting beam and a housing top connecting beam. The housing is installed in the housing frame to shield the internal parts. The interconnection component includes cushion blocks, screws and angle brackets. During transportation, the angle brackets rigidly connect the drive base - housing base and the drive top connecting beam - housing top connecting beam. During operation, the interconnection component is removed to make the drive frame and the housing frame not in contact and isolate vibration.

2. The vibration isolation device for high-precision detection equipment according to claim 1, characterized in that, The housing base is designed as an internally hollow annular structure, and the drive base is designed as an inverted step form and nested in the housing base with a gap left from the outer ring of the housing base. The upward flanging is suspended and covers the upper end face of the outer ring of the housing base. During transportation, the cushion blocks fill the gap, and the screws fixedly connect the housing base and the drive base. During operation, the cushion blocks and the screws are removed, and the two sets of bases are not in contact.

3. The vibration isolation device for high-precision detection equipment according to claim 2, wherein, The inverted step form of the drive base is designed as a flat plate, and the cushion blocks are replaced with transition blocks.

4. The vibration isolation device for high-precision detection equipment according to claim 1, wherein, The cushion blocks are designed as L-shaped. Threaded holes corresponding to the installation positions of each cushion block are designed on the drive base. When installing and removing the cushion blocks, screws are screwed in to jack up the drive frame.

5. The vibration isolation device for high-precision detection equipment according to claim 1, characterized in that, The angle brackets are designed as double-sided long waist holes to match the position deviation between the drive top connecting beam and the housing top connecting beam and facilitate installation.

6. The vibration isolation device for high-precision detection equipment according to claim 1, characterized in that, Several buffer cushion blocks made of rubber are installed around the drive base along the housing base.

7. The vibration isolation device for high-precision detection equipment according to claim 1, characterized in that, A set of protection screws is designed in the overlapping area between the drive base and the housing base. The protection screws pass through the through holes on the drive base and are installed on the housing base. The through holes are slightly thicker than the screw rods and slightly thinner than the screw heads. The screw heads are slightly higher than the upper plane of the drive base to ensure that the protection screws do not contact the drive base and prevent large-scale movement of the drive frame.

8. The vibration isolation device for high-precision detection equipment according to claim 7, characterized in that, A gasket is added between the protection screws and the drive base to correspondingly adjust the length of the screws.

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