Auxiliary device for SPECT equipment installation and installation method

Abstract

The invention relates to the technical field of medical equipment processing, in particular to an auxiliary device for SPECT equipment installation and an installation method.The auxiliary device comprises a base, an installation frame arranged on the base in a sliding mode, a vertical sliding base arranged on the installation frame in a sliding mode and a driving mechanism arranged on the installation frame; a lifting table is arranged on the mounting frame, the driving mechanism can drive the vertical sliding seat and the lifting table to synchronously ascend and descend, a transverse positioning structure and a vertical positioning structure are further arranged on the vertical sliding seat, and the transverse positioning structure is used for adjusting alignment of the top support and the bottom support in the horizontal direction. The vertical positioning structure is used for adjusting the top support and the bottom support to be aligned in the vertical direction. The device has the effect of being easy and convenient to use, and meanwhile the purpose of improving the installation efficiency on the premise that the installation quality is ensured is achieved.

Description

Technical Field

[0001] The present application relates to the field of medical equipment processing technology, and in particular to an auxiliary device and installation method for SPECT equipment. Background Art

[0002] Large medical equipment such as Single-Photon Emission Computed Tomography (SPECT) equipment has precise structure, complex technology and large capital investment, and therefore has high requirements for its assembly method.

[0003] like Figure 1 As shown, the existing SPECT device structure generally includes a chassis 20, a patient chair 30 installed on the chassis 20, a sliding seat 40 slidably set on the chassis 20, a driving structure 50 set on the chassis 20 for driving the sliding seat 40 to slide, a bottom bracket 60 fixed on the sliding seat 40, a top bracket 70 rotatably connected to the top of the bottom bracket 60, and a probe assembly rotatably connected to the top bracket 70, wherein the probe assembly includes a main frame 80, a plurality of probes installed on the main frame 80, and a shell installed on the main frame 80; the sliding seat 40, the bottom bracket 60 and the top bracket 70 are all located on one side of the patient chair 30, and the main frame 80 is located above the patient chair 30 after installation, and the rotating shaft between the top bracket 70 and the bottom bracket 60, as well as the main frame 80 and the top bracket The rotating shafts of the lower brackets 70 are all provided with rotation damping, which is used by medical staff to manually push the top bracket 70 or the main frame 80 to change the orientation of the main frame 80, thereby being more conducive to improving the accuracy of the use of the equipment; since the main frame 80 is heavier as a whole and is set on the top bracket 70, in order to balance the weight of the main frame 80, a plurality of counterweights are also installed at the bottom end of the top bracket 70 to ensure that the top bracket 70 will not rotate downward due to the influence of the gravity of the main frame 80 in the absence of external force. In addition, a limiting bracket is also provided on one side of the bottom end of the top bracket 70, and the limiting bracket is used to prevent the top bracket 70 from rotating in the opposite direction; and a shell is also installed on the outside of the bottom bracket 60 and the top bracket 70 to increase the safety and aesthetics of the equipment.

[0004] For the above-mentioned SPECT device, when assembling it, it is necessary to fix the chassis 20 on the pallet of the forklift with bolts, and then assemble the patient chair 30, the sliding seat 40, the drive structure 50 and the bottom bracket 60 one by one on the chassis 20. After that, multiple workers cooperate to lift the top bracket 70 and place it on the top of the bottom bracket 60. Then, with the cooperation of the workers, the position of the top bracket 70 is manually adjusted to ensure that the rotation axes of the top bracket 70 and the bottom bracket 60 are coaxial. After the adjustment is completed, the connecting shaft is inserted and locked with bolts to realize the assembly of the top bracket 70 and the bottom bracket 60. The counterweight and limit bracket must be installed first to prevent the top bracket 70 from rotating when the main frame 80 is installed later, and then the main frame 80 can be installed; during the installation of the main frame 80, multiple workers are also required to cooperate to lift the main frame 80 to a certain height and ensure the coaxiality of the main frame 80 and the top bracket 70. After that, the rotating shaft of the main frame 80 is inserted into the top bracket 70 and locked by bolts to realize the assembly of the main frame 80. Finally, the remaining accessories and the outer shell are gradually installed on the bottom bracket 60, the top bracket 70, and the main frame 80. At this point, the assembly of the SPECT equipment can be realized.

[0005] However, during the actual installation process, since the top bracket 70 and the main frame 80 have a certain weight, the installation process usually requires the cooperation of multiple workers. At the same time, when adjusting the coaxiality, continuous fine-tuning is also required. The overall installation process is relatively complicated, and requires a high degree of cooperation from the workers. The installation is also relatively laborious, and there is room for improvement. Summary of the Invention

[0006] In order to achieve the purpose of improving installation convenience, reducing installation difficulty, and thus improving installation efficiency while ensuring the installation quality of SPECT equipment, the present application provides an auxiliary device and installation method for SPECT equipment installation.

[0007] In a first aspect, the present application provides an auxiliary device for installing a SPECT device, which adopts the following technical solution: An auxiliary device for installing a SPECT device includes a base, a mounting frame slidingly arranged on the base, a vertical slide slidingly arranged on the mounting frame, and a driving mechanism arranged on the mounting frame for driving the vertical slide to rise and fall, the vertical slide is provided with a lifting assembly for placing a top bracket, the mounting frame is provided with a hanging platform for placing a main skeleton, the driving mechanism can drive the vertical slide and the hanging platform to rise and fall synchronously, and the vertical slide is also provided with a horizontal positioning structure and a vertical positioning structure, the horizontal positioning structure is used to adjust the alignment of the top bracket and the bottom bracket in the horizontal direction, and the vertical positioning structure is used to adjust the alignment of the top bracket and the bottom bracket in the vertical direction.

[0008] By adopting the above technical solution, when in use, with the cooperation of the vertical slide, drive mechanism, lifting assembly, hanging platform, horizontal positioning structure and vertical positioning structure, the purpose of quickly assembling the top bracket, main frame and bottom bracket is achieved. At the same time, the installation coaxiality between the top bracket, bottom bracket and main frame is also ensured, thereby ensuring the overall installation quality of the equipment. Compared with the installation method requiring the cooperation of multiple people, the overall use is more convenient, the installation difficulty is reduced, and the installation efficiency is improved.

[0009] Preferably, the lifting assembly includes a first support arm and a second support arm rotating on a vertical slide, and a third support arm slidingly set on the first support arm. The first support arm and the third support arm are both used to support the top bracket. After the second support arm is rotated, it is used to support the third support arm away from one end of the first support arm. After the third support arm slides out of the top bracket, the first support arm can be rotated out of the top bracket. The horizontal positioning structure and the vertical positioning structure are both set on the third support arm.

[0010] By adopting the above technical solution, when in use, the top bracket is lifted by the first support arm and the third support arm, and the second support arm provides support for the suspended end of the third support arm. On the one hand, it prevents the second support arm from affecting the lateral movement of the top bracket. On the other hand, in the process of adjusting the height of the top bracket, the stability of the second support arm is ensured, thereby ensuring the accuracy of subsequent adjustments.

[0011] Preferably, a first slide is slidingly provided on the first support arm, a second slide is slidingly provided on the first slide, the sliding directions of the first slide and the second slide are the same, the third support arm is fixedly provided on the second slide, a roller assembly is floatingly provided on the third support arm, and the vertical positioning structure is used to adjust the floating height of the roller assembly.

[0012] By adopting the above technical solution, when in use, with the cooperation of the first slide, the second slide and the roller assembly, the stability of the top bracket during transportation is ensured. At the same time, after the top bracket is installed, it is easy to pull out the third support arm, which is more convenient to use.

[0013] Preferably, the roller assembly includes two symmetrically arranged wheel frames, support wheels rotating on the wheel frames, a first adjusting bolt arranged between the two wheel frames, a first locking nut threadedly engaged with the first adjusting bolt, and a return spring sleeved on the first adjusting bolt. One end of the support wheels provided on the two wheel frames are arranged in a back-to-back manner, the return spring is located between the two wheel frames, and the two ends of the return spring are respectively abutted against the wheel frames on one side, and the first locking nut and the first adjusting bolt are used to prevent the two wheel frames from detaching from each other.

[0014] By adopting the above technical solution, when in use, the distance between the two wheel frames is adjusted through the cooperation of the first locking nut and the first adjusting bolt, so as to ensure that the reset spring is in a compressed state, thereby cooperating with the use of the vertical positioning structure to achieve the installation height adjustment of the top bracket, and also facilitate the withdrawal of the third support arm.

[0015] Preferably, the vertical positioning structure includes a sliding rod slidably arranged on the third support arm, a first fixed block fixed on the third support arm, and a driving member arranged on the first fixed block for driving the sliding rod to slide, the sliding rod is passed between the two wheel frames, and the two sides of the sliding rod are respectively abutted and matched with the wheel frames on the corresponding sides, the wheel frame is provided with a first guide bevel at one end of the sliding rod, and the sliding rod is provided with a second guide bevel on the side wall of the wheel frame, and the first guide bevel and the second guide bevel are abutted and matched.

[0016] By adopting the above technical solution, when in use, the sliding rod is driven to slide by the driving member, and with the cooperation of the first guide bevel and the second guide bevel, the two wheel frames are made to slide relative to each other, thereby adjusting the distance between the two support wheels, and then realizing the adjustment of the installation coaxiality between the top bracket and the bottom bracket, and the overall use is more convenient.

[0017] Preferably, the lateral positioning structure includes a second fixed block fixed on the first slide, a second adjusting bolt passed through the second fixed block, a second locking nut threadedly engaged with the second adjusting bolt, and a positioning block fixed at the end of the second adjusting bolt, the positioning block abutting against the side wall of the bottom bracket, two second locking nuts are provided, and the two second locking nuts are respectively provided on both sides of the second fixed block.

[0018] By adopting the above technical solution, when in use, the distance between the side wall of the bottom bracket and the installation axis of the bottom bracket and the top bracket is known, so that the position of the second locking nut is adjusted according to this distance to change the position of the positioning block, so that when the positioning block abuts the side wall of the bottom bracket, the bottom bracket and the top bracket are aligned in the horizontal direction, thereby improving the convenience of the coaxiality adjustment process of the top bracket.

[0019] Preferably, the driving mechanism includes a driving hydraulic cylinder arranged on a mounting frame, a fixed seat fixed to the end of the piston rod of the driving hydraulic cylinder, a lifting sprocket rotating on the fixed seat, a first chain cooperating with the lifting sprocket, a plurality of driven sprockets rotating on the mounting frame, a guide sprocket sliding on the mounting frame, and a second chain wound between the driven sprocket and the guide sprocket, one end of the first chain is fixed to the mounting frame, the other end of the first chain is connected to the vertical slide after passing around the lifting sprocket, one end of the second chain is connected to the fixed seat, the other end of the second chain is detachably connected to the hanging platform after passing around the driven sprocket and the guide sprocket, and an adjusting component is also provided on the mounting frame, and the adjusting component is used to adjust the connection state of the guide sprocket and the second chain.

[0020] By adopting the above technical solution, when in use, with the cooperation of the first chain, lifting sprocket, second chain, driven sprocket and guide sprocket, two movement states are realized: the vertical slide and the platform rise synchronously, and the platform moves horizontally. By driving the hydraulic cylinder to assist workers, the installation steps of the two components of the top bracket and the main frame are realized, and the overall use is more convenient, which is conducive to improving installation efficiency.

[0021] In a second aspect, the present application provides a method for installing a SPECT device, which adopts the following technical solution: A method for installing a SPECT device comprises the following steps: S1. Place the forklift pallet on the base, and assemble the chassis, patient chair, sliding seat, drive structure and bottom bracket on the forklift pallet one by one; S2. Place the top bracket on the first support arm and the third support arm, and place the main frame on the hanging platform; S3, controlling the synchronous lifting of the top bracket and the main frame through the driving mechanism, pausing the lifting when the top bracket is higher than the bottom bracket, and then pushing the mounting frame so that the top bracket gradually approaches the bottom bracket until the positioning block abuts the bottom bracket, and then stopping the pushing of the mounting frame, thereby completing the horizontal positioning of the top bracket and the bottom bracket; S4. Rotate the second support arm until it contacts the third support arm, and drive the slide bar to slide by the driving member, thereby driving the support wheel to move in the vertical direction, thereby achieving vertical positioning of the bottom bracket and the top bracket; S5. Install the top bracket on the bottom bracket through the connecting shaft, and install the counterweight, the limit bracket and the part of the shell facing the main frame on the top bracket one by one; S6, rotating the second support arm to disengage from the third support arm, sliding the third support arm to disengage from between the top bracket and the bottom bracket, and then rotating the first support arm to disengage from the top bracket; S7, controlling the vertical slide to continue to rise through the driving mechanism, thereby driving the hanging platform to rise synchronously, until the main frame rotation axis on the hanging platform approaches the top bracket mounting hole, and then controlling the driving mechanism to stop rising; S8. Use the adjustment assembly to relatively fix the guide sprocket and the second chain, then start the drive mechanism to continue running, thereby driving the hanging platform to move horizontally. Workers assist in pushing the hanging platform until the rotating shaft of the main frame is inserted into the corresponding mounting hole, and then control the drive mechanism to stop running; S9. The worker adjusts the coaxiality of the main frame shaft installation through the flexible cooperation of the hanging rope on the hanging platform. After the adjustment is completed, the remaining accessories and the shell are installed on the top bracket to complete the assembly of the SPECT equipment.

[0022] By adopting the above technical solution, when in use, the auxiliary device cooperates with the workers to achieve the purpose of quickly assembling the top bracket, main frame and bottom bracket together, while also ensuring the installation coaxiality between the top bracket, bottom bracket and main frame, thereby ensuring the overall installation quality of the equipment. Compared with the installation method of multiple people cooperating in manual adjustment, the overall use is more convenient, the installation difficulty is reduced, and the installation efficiency is improved.

[0023] In summary, this application includes at least one of the following beneficial technical effects: 1. The coordinated action of the vertical slide, drive mechanism, lifting assembly, hanging platform, horizontal positioning structure, and vertical positioning structure enables the top bracket, main frame, and bottom bracket to be quickly assembled together. This also ensures the coaxiality of the top bracket, bottom bracket, and main frame, thereby ensuring the overall installation quality of the equipment. Compared with the installation method requiring the cooperation of multiple people, the overall use is more convenient, the installation difficulty is reduced, and the installation efficiency is improved; 2. The cooperation of the first slide, the second slide and the roller assembly ensures the stability of the top bracket during transportation, and facilitates the removal of the third support arm after the top bracket is installed. 3. Through the cooperation of the reset spring, wheel frame, support wheel and slide rod, workers can be assisted to fine-tune the installation height of the top bracket, which is more conducive to ensuring the coaxiality of the installation of the top bracket and the bottom bracket. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is an exploded diagram of the overall structure of the SPECT device in the background technology of this application; Figure 2 This is an axonometric diagram mainly showing the overall usage state of the device in the embodiment of the present application; Figure 3 This is an axonometric diagram mainly showing the overall structure of the auxiliary device in the embodiment of the present application; Figure 4 This is an axonometric diagram mainly showing the structure of the lifting assembly in the embodiment of the present application; Figure 5 This is an axonometric diagram mainly showing the structure of the third support arm in the embodiment of the present application; Figure 6 This is an axonometric diagram mainly showing the structure of the roller assembly in the embodiment of the present application; Figure 7 This is a schematic diagram mainly showing the use state of the vertical positioning structure in the embodiment of the present application; Figure 8 This is a schematic diagram mainly showing the lateral positioning structure in an embodiment of the present application; Figure 9 This is an axonometric diagram mainly showing the installation state of the drive mechanism in the embodiment of the present application; Figure 10 It is an axonometric diagram mainly showing the structure of the adjustment component in the embodiment of the present application.

[0025] Figure numerals: 1. base; 11. placement area; 2. mounting frame; 21. bottom slide; 22. vertical frame; 23. horizontal frame; 24. abutment bolt; 25. third slide; 3. vertical slide; 4. driving mechanism; 41. driving hydraulic cylinder; 42. fixing seat; 43. lifting sprocket; 44. first chain; 45. driven sprocket; 46. guide sprocket; 47. second chain; 5. lifting assembly; 51. first support arm; 52. second support arm; 53. third support arm; 531. first plate; 532. second plate; 533. buffer spring; 54. first slide; 55. second slide; 56. roller assembly; 561. wheel frame; 562. support Wheel; 563, first adjusting bolt; 564, first locking nut; 565, return spring; 566, first guide bevel; 6, hanging platform; 7, horizontal positioning structure; 71, second fixed block; 72, second adjusting bolt; 73, second locking nut; 74, positioning block; 8, vertical positioning structure; 81, slide bar; 82, first fixed block; 83, drive member; 84, second guide bevel; 9, adjustment assembly; 91, slider; 92, pressure block; 93, pressure plate; 94, adjustment screw; 95, anti-slip pad; 10, linkage rod; 20, chassis; 30, patient chair; 40, sliding seat; 50, drive structure; 60, bottom bracket; 70, top bracket; 80, main frame. DETAILED DESCRIPTION

[0026] The following is combined with Figure 2 -Attached Figure 10 This application is described in further detail.

[0027] The embodiments of the present application disclose an auxiliary device and an installation method for SPECT equipment.

[0028] Reference Figure 2 and Figure 3 An auxiliary device for installing a SPECT device includes a base 1, a mounting frame 2, a vertical slide 3 and a driving mechanism 4, wherein the base 1 is placed horizontally on the ground, and a placement area 11 for placing a forklift pallet is provided on the base 1; the mounting frame 2 can slide on the base 1, and the mounting frame 2 includes a bottom slide 21, a vertical frame body 22 fixed on the bottom slide 21, and a horizontal frame body 23 fixed on the top of the vertical frame body 22, one end of the horizontal frame body 23 is suspended, and a guide rail is also provided on the base 1, and the bottom slide 21 is slidably connected to the guide rail, and at the same time, an abutment bolt 24 is threadedly connected to the bottom slide 21, and the bottom end of the abutment bolt 24 passes through the bottom slide 21 and abuts against the base 1.

[0029] Reference Figure 2 、 Figure 3 and Figure 4 At the end of the horizontal frame 23 away from the vertical frame 22, there is a hanging platform 6 connected by a hanging rope, on which workers can place the main frame 80; the vertical slide 3 is connected to the vertical frame 22 by sliding along the height direction of the vertical frame 22, and the driving mechanism 4 is used to drive the vertical slide 3 and the hanging platform 6 to rise and fall synchronously in the vertical direction. A lifting assembly 5, a horizontal positioning structure 7 and a vertical positioning structure 8 are also provided on the vertical slide 3. The lifting assembly 5 is used for workers to place the top bracket 70, the horizontal positioning structure 7 is used to adjust the horizontal position alignment of the top bracket 70 and the bottom bracket 60, and the vertical positioning structure 8 is used to adjust the vertical position alignment of the top bracket 70 and the bottom bracket 60.

[0030] Reference Figure 2 and Figure 3 When in use, the vertical slide 3 is at the bottom end, the mounting frame 2 is located on one side of the placement area 11 as a whole, and the horizontal frame 23 is located above the placement area 11. In this state, the worker can first place the forklift pallet in the placement area 11, and then assemble the chassis 20, the sliding seat 40, the driving structure 50 and the bottom bracket 60 on the forklift pallet one by one, and complete the assembly of the main frame 80 directly on the hanging platform 6, and then place the top bracket 70 on the lifting assembly 5. After that, the vertical slide 3 and the hanging platform 6 can be driven to rise synchronously through the driving mechanism 4, thereby achieving the purpose of synchronously lifting the top bracket 70 and the main frame 80; finally, the worker manually pushes the mounting frame 2 to slide in the horizontal direction, which can drive the top bracket 70 to move to just above the bottom bracket 60, and cooperates with the horizontal positioning structure 7 and the vertical positioning structure 8 to realize the assembly of the top bracket 70 and the bottom bracket 60.

[0031] Reference Figure 3 and Figure 4The lifting assembly 5 includes a first support arm 51, a second support arm 52 and a third support arm 53. The first support arm 51 and the second support arm 52 are both rotatably connected to the vertical slide 3, and the rotation directions of the first support arm 51 and the second support arm 52 are opposite. In the initial state, the first support arm 51 is perpendicular to the length direction of the vertical slide 3, the second support arm 52 is parallel to the length direction of the vertical slide 3, and the third support arm 53 is slidingly set on the first support arm 51, and the sliding direction of the third support arm 53 is parallel to the length direction of the vertical slide 3. When one end of the third support arm 53 slides away from the first support arm 51, the first support arm 51 and the third support arm 53 can jointly provide supporting force to the top bracket 70, and then the second support arm 52 is rotated to the bottom of the third support arm 53 to provide support for the third support arm 53, thereby ensuring the stability of the placement of the top bracket 70.

[0032] Reference Figure 4 and Figure 5 The first and second slides 54 and 55 have the same sliding direction. The third support arm 53 is fixed on the second slide 55, and the length direction of the third support arm 53 is parallel to the sliding direction of the second slide 55. The transverse positioning structure 7 is installed on the first slide 54, and a roller assembly 56 is provided on the third support arm 53. The roller assembly 56 can float up and down along the thickness direction of the third support arm 53. In addition, in order to ensure that the first slide 54 and the second slide 55 do not slide relative to each other during the support of the top bracket 70, positioning bolts are provided on the first slide 54 and the second slide 55. That is, after the first slide 54 and the second slide 55 slide, the corresponding positioning bolts can be tightened to press against the side walls of the first slide 54 and the second slide 55, thereby forming the positioning of the first slide 54 and the second slide 55.

[0033] Reference Figure 4 and Figure 5The second support arm 531 and the second support arm 532 are connected to each other in a vertical direction so as to prevent the first support arm 531 from sliding relative to the second support arm 532 when the first support arm 531 is in a vertical direction and the second support arm 532 is connected to the second support arm 532 when the first support arm 531 is in a vertical direction and the second support arm 532 is connected to the second support arm 532 when the second support arm 532 is in a vertical direction and the second support arm 532 is connected to the second support arm 532 when the second support arm 532 is in a vertical direction and the first support arm 531 and the second support arm 532 are connected to the second support arm 532 when the second support arm 532 is in a vertical direction and the second support arm 532 is connected to the second support arm 532 when the second support arm 532 is in a vertical direction and the first support arm 531 and the second support arm 532 are connected to the second support arm 532 when the second support arm 532 is in a vertical direction and the second support arm 532 is connected to the second support arm

[0034] Reference Figure 4 and Figure 5 In the initial state, part of the roller assembly 56 is located between the first plate 531 and the second plate 532, and the other part of the roller assembly 56 passes through the avoidance groove and is used to abut the bottom bracket 60 or the top bracket 70. The roller assembly 56 as a whole can slide in the avoidance groove in the vertical direction. The roller assembly 56 is provided in several groups, and the several groups of roller assemblies 56 are evenly spaced along the length direction of the avoidance groove; at the same time, the several groups of roller assemblies 56 are connected together by the linkage rod 10, that is, the movement states of the several groups of roller assemblies 56 are always kept synchronized.

[0035] Reference Figure 4 and Figure 5 When in use, when the third support arm 53 moves up to abut the top bracket 70, the part of the roller assembly 56 protruding from the avoidance groove first abuts against the top bracket 70. Then, as the third support arm 53 moves up, the roller assembly 56 and the first plate 531 and the second plate 532 slide relative to each other in the vertical direction until the top surface of the first plate 531 also abuts against the top bracket 70. Continue to move the third support arm 53, and the top bracket 70 can be lifted by the cooperation of the first plate 531 and the roller assembly 56.

[0036] Reference Figure 4 and Figure 5When the third support arm 53 is placed on the top of the bottom support 60, the second support arm 52 can be rotated to abut against one end of the third support arm 53, thereby supporting the third support arm 53 away from the end of the first support arm 51 and limiting the position of the top support 70. When the top support 70 is installed, the pad can be removed first to create a movable space between the first plate 531 and the second plate 532, thereby reducing the abutment force between the first plate 531, the second plate 532 and the top support 70 and the bottom support 60. Then, with the arrangement of several groups of roller assemblies 56, it is easier to pull the third support arm 53 out from between the top support 70 and the bottom support 60.

[0037] Reference Figure 5 and Figure 6 , any group of roller assemblies 56 are composed of a wheel frame 561, a support wheel 562, a first adjusting bolt 563, a first locking nut 564 and a reset spring 565, wherein two wheel frames 561 are provided, and the two wheel frames 561 are symmetrically arranged in the vertical direction, one end of each wheel frame 561 is rotatably connected to a support wheel 562, the two support wheels 562 are arranged oppositely, and there is a gap between the two adjacent wheel frames 561, and one end of the first adjusting bolt 563 passes through the two wheel frames 561 and is connected to the first locking nut The nut 564 is threadedly connected, and the return spring 565 is sleeved on the first adjusting bolt 563, and the return spring 565 is located between the two wheel frames 561, and the two ends of the return spring 565 are respectively abutted against the side walls of the wheel frames 561 on the corresponding sides; when in use, the return springs 565 in each group of roller assemblies 56 are in a compressed state, and the compression amount of the return spring 565 can also be adjusted by screwing the first locking nut 564, so as to adjust the relative sliding distance of the two wheel frames 561, thereby adapting to different usage requirements.

[0038] Reference Figure 5 and Figure 7 In this embodiment, the vertical positioning structure 8 adjusts the spacing between the two support wheels 562 by adjusting the distance between the two wheel frames 561, thereby adjusting the height difference between the top bracket 70 and the bottom bracket 60 with the help of the support wheels 562 to support the top bracket 70; the vertical positioning structure 8 is composed of a sliding rod 81, a first fixed block 82 and a driving member 83, wherein the sliding rod 81 is arranged between the two wheel frames 561, and the sliding rod 81 is slidably connected to the second plate body 532, and the upper and lower sides of the sliding rod 81 respectively form abutment with the corresponding side walls of the wheel frame 561.

[0039] Reference Figure 6 and Figure 7A second guide bevel 84 is formed on the slide rod 81, and a first guide bevel 566 is formed on the wheel frame 561. The first guide bevel 566 and the second guide bevel 84 are in abutment with each other, that is, as the slide rod 81 moves, the second guide bevel 84 can support and guide the first guide bevel 566, so as to drive the two wheel frames 561 to slide toward or relative to each other; in this embodiment, when the lowest end of the second guide bevel 84 is aligned with the lowest end of the first guide bevel 566, the roller assembly 56 has sliding space in the vertical direction.

[0040] Reference Figure 6 and Figure 7 The first fixing block 82 is fixed to the end of the second plate 532 away from the first support arm 51 by a bolt. The driving member 83 is set on the first fixing block 82, and the driving member 83 is used to drive the slide rod 81 to slide. In this embodiment, the driving member 83 is set as a long bolt. One end of the long bolt passes through the first fixing block 82 and is rotatably connected to the slide rod 81. The long bolt is threadedly engaged with the first fixing block 82; when in use, the slide rod 81 can be driven to slide by rotating the long bolt, thereby realizing the adjustment of the height position of the support wheel 562.

[0041] Reference Figure 6 and Figure 7 In the initial state, under the influence of gravity and the return spring 565, the roller assembly 56 as a whole is biased toward the second plate 532, and the upper support wheel 562 in each group of roller assemblies 56 is partially protruding from the first plate 531. When the top bracket 70 is placed on the third support arm 53, under the downward pressure of the top bracket 70, the roller assembly 56 moves downward as a whole until the upper support wheel 562 in the roller assembly 56 is completely moved down into the avoidance groove. At this time, the top bracket 70 directly abuts against the first plate 531, thereby supporting the top bracket 70 through the first plate 531, thereby ensuring the stability of the placement of the top bracket 70.

[0042] Reference Figure 6 and Figure 7When the second plate 532 gradually approaches the bottom bracket 60, as the support wheel 562 at the bottom of the roller assembly 56 abuts the top of the bottom bracket 60, the distance between the two support wheels 562 in the roller assembly 56 is gradually compressed until both wheel frames 561 abut on the slide bar 81. Then, the top bracket 70 can be placed more stably on the bottom bracket 60. Then, the driving member 83 drives the slide bar 81 to slide, driving the two support wheels 562 to move in the opposite direction, thereby driving the top bracket 70 to rise slowly, thereby achieving the height adjustment of the top bracket 70. Fine adjustment in the degree direction; and since the distance between the rotation axis of the top bracket 70 and the bottom wall of the top bracket 70 is known, the moving height of the top bracket 70 can be converted into the sum of the slopes of the first guide bevel 566 and the second guide bevel 84 by advance calculation, that is, as the slide bar 81 moves horizontally, the first guide bevel 566 and the second guide bevel 84 are gradually misaligned, so that the two support wheels 562 are moved away from each other through the cooperation between the first guide bevel 566 and the second guide bevel 84, thereby achieving the purpose of aligning the top bracket 70 and the bottom bracket 60 in the vertical direction.

[0043] Reference Figure 5 and Figure 8 The lateral positioning structure 7 includes a second fixed block 71, a second adjusting bolt 72, a second locking nut 73 and a positioning block 74. The second fixed block 71 is fixed to the bottom of the first slide 54 by bolts. The second adjusting bolt 72 is passed through the second fixed block 71. Two second locking nuts 73 are provided, and the two second locking nuts 73 are respectively arranged on both sides of the second fixed block 71. The second locking nut 73 is threadedly engaged with the second adjusting bolt 72. The positioning block 74 is fixed to one end of the second adjusting bolt 72 facing the top bracket 70.

[0044] Reference Figure 5 and Figure 8 When in use, by screwing the second locking nut 73, the two second locking nuts 73 are clamped on the second fixing block 71, thereby fixing the second adjusting bolt 72, and then fixing the positioning block 74. The spacing between the mounting hole for mounting the top bracket 70 on the bottom bracket 60 and the side wall of the bottom bracket 60 is known. Therefore, by pre-adjusting the position of the positioning block 74, when the positioning block 74 abuts the side wall of the bottom bracket 60, the top bracket 70 and the bottom bracket 60 are aligned in the horizontal direction, and the overall adjustment method is simpler and more convenient.

[0045] Reference Figure 3 and Figure 9The driving mechanism 4 includes a driving hydraulic cylinder 41, a fixed seat 42, a lifting sprocket 43, a first chain 44, a driven sprocket 45, a guide sprocket 46 and a second chain 47, wherein the cylinder body of the driving hydraulic cylinder 41 is fixedly mounted on the bottom slide 21, the piston rod of the driving hydraulic cylinder 41 is arranged vertically upward, the fixed seat 42 is fixedly connected to the top end of the piston rod of the driving hydraulic cylinder 41, the lifting sprocket 43 is rotatably connected to the fixed seat 42, the first chain 44 is meshed with the lifting sprocket 43 for transmission cooperation, and one end of the first chain 44 is fixed on the bottom slide 21, and the other end of the first chain 44 is fixedly connected to the vertical slide 3 after passing through the lifting sprocket 43; when in use, the worker holds the control handle to control the external hydraulic pump to start, and at the same time cooperates with the control valve to switch the direction of the oil circuit, thereby controlling the extension and retraction of the piston rod of the driving hydraulic cylinder 41. When the piston rod of the driving hydraulic cylinder 41 rises, the lifting sprocket 43 is driven to rise synchronously, and with the cooperation of the first chain 44, the purpose of driving the vertical slide 3 to rise and fall can be achieved.

[0046] Reference Figure 3 and Figure 9 There are several driven sprockets 45, and the several driven sprockets 45 are arranged at intervals on the mounting frame 2. In this embodiment, there are three driven sprockets 45, one of which is arranged on the vertical frame 22, and the vertical height of the driven sprocket 45 is lower than the cylinder height of the driving hydraulic cylinder 41. The other two driven sprockets 45 are arranged on the horizontal frame 23.

[0047] Reference Figure 3 and Figure 9 A third slide 25 is provided at one end of the horizontal frame 23 that is sliding away from the vertical frame 22, and the guide sprocket 46 rotates on the third slide 25. The second chain 47 is engaged with the driven sprocket 45 and the guide sprocket 46. One end of the second chain 47 is detachably connected to the fixed seat 42, and the other end of the second chain 47 passes around the three driven sprockets 45 and the guide sprocket 46 in sequence and then faces vertically to the base 1. A shackle for installing a lifting rope is also connected to the end of the second chain 47. An adjusting component 9 is also provided on the third slide 25, and the adjusting component 9 is used to adjust the connection state of the guide sprocket 46 and the second chain 47, that is, the positioning of the third slide 25 and the horizontal frame 23, or the relative positioning of the guide sprocket 46 and the second chain 47 can be achieved through the adjusting component 9.

[0048] Reference Figure 9 and Figure 10The adjusting assembly 9 includes a slider 91 connected to the third slide 25 for sliding movement in the vertical direction, a pressure block 92 fixed to the top of the slider 91 by bolts, a pressure plate 93 fixed to the bottom end of the slider 91, and an adjusting screw 94 rotating on the third slide 25, wherein the pressure block 92 is used to press part of the chain links of the second chain 47 against the guide sprocket 46, thereby achieving the relative positioning of the guide sprocket 46 and the second chain 47, the pressure plate 93 is located below the transverse frame 23, and an anti-slip pad 95 is fixed on the pressure plate 93. The pressure plate 93 and the anti-slip pad 95 are used together to abut against the transverse frame 23, thereby achieving the positioning of the third slide 25 on the transverse frame 23, and the adjusting screw 94 is used to drive the slider 91 to slide, so that the pressure block 92 abuts against the second chain 47, or the pressure plate 93 abuts against the transverse frame 23.

[0049] Reference Figure 9 and Figure 10 In this embodiment, when the pressure plate 93 is pressed against the transverse frame 23, the pressure block 92 is separated from the second chain 47. At this time, the second chain 47 can be normally transmitted with the guide sprocket 46, and the third slide 25 is positioned on the transverse frame 23; when the slider 91 drives the pressure plate 93 to move downward, the pressure plate 93 is separated from the transverse frame 23, and the pressure block 92 gradually presses the second chain 47 against the guide sprocket 46, thereby achieving relative fixation of the second chain 47 and the guide sprocket 46; in the initial state, the pressure plate 93 is in a state of pressing against the transverse frame 23.

[0050] Reference Figure 3 and Figure 9 When in use, as the piston rod of the driving hydraulic cylinder 41 extends, the fixed seat 42 and the lifting sprocket 43 rise synchronously, so that under the transmission action of the first chain 44 and the second chain 47, the vertical slide 3 and the hanging platform 6 rise synchronously; when it is necessary to drive the hanging platform 6 to move horizontally, the worker only needs to turn the adjusting screw 94 to make the slider 91 drive the pressure block 92 and the pressure plate 93 to move downward synchronously until the pressure block 92 presses part of the chain links of the second chain 47 on the guide sprocket 46. At this time, the fixed seat 42 continues to rise, driving the vertical slide 3 to rise vertically and the hanging platform 6 to slide horizontally. In addition, the lifting rope on the hanging platform 6 is flexible, so the worker can manually push the hanging platform 6 to change the position of the main frame 80 on the hanging platform 6, thereby facilitating the assembly of the main frame 80 and the top bracket 70.

[0051] A method for installing a SPECT device, comprising the following steps: S1. Place the forklift pallet in the placement area 11 on the base 1, fix the chassis 20 to the forklift pallet with bolts, and assemble the sliding seat 40, the driving structure 50 and the bottom bracket 60 on the chassis 20 one by one; S2. Adjust the states of the first support arm 51 and the third support arm 53, place the top bracket 70 on the first support arm 51 and the third support arm 53, place the main frame 80 on the hanging platform 6, and then fix the main frame 80 and the hanging platform 6 relative to each other with binding ropes; S3. The worker controls the driving mechanism 4 to start, so as to control the synchronous lifting of the top bracket 70 and the main frame 80. When the worker observes that the top bracket 70 is higher than the bottom bracket 60, the worker controls the driving mechanism 4 to stop starting. At this time, the top bracket 70 and the main frame 80 are suspended in mid-air. The worker then pushes the mounting frame 2, so that the top bracket 70 gradually approaches the bottom bracket 60. After the positioning block 74 abuts the bottom bracket 60, the worker stops pushing the mounting frame 2 and tightens the abutting bolts 24 to tighten the base 1, thereby completing the horizontal positioning of the top bracket 70 and the bottom bracket 60. S4, rotate the second support arm 52 until it abuts against the third support arm 53, and drive the slide bar 81 to slide through the driving member 83, driving the support wheel 562 to move in the vertical direction, thereby supporting the top bracket 70 with the help of the support wheel 562, so that the top bracket 70 moves slowly in the vertical direction. During this process, the vertical movement height of the top bracket 70 can be calculated based on the known distance between the mounting holes of the top bracket 70 and the bottom bracket 60 and the bottom end of the top bracket 70, thereby realizing the vertical positioning of the bottom bracket 60 and the top bracket 70, thereby completing the adjustment of the installation coaxiality of the top bracket 70 and the bottom bracket 60; S5. Install the top bracket 70 on the bottom bracket 60 via the connecting shaft, and install the counterweight, the limit bracket, and the portion of the housing facing the main frame 80 on the top bracket 70 one by one to ensure that the top bracket 70 will not rotate or deviate during the subsequent installation of the main frame 80. S6. Rotate the second support arm 52 to disengage from the third support arm 53, and remove the spacer from between the first plate 531 and the second plate 532. Then, slide the third support arm 53 to disengage from between the top bracket 70 and the bottom bracket 60. Rotate the first support arm 51 to move the third support arm 53 away from the top bracket 70. S7: Control the drive mechanism 4 to continue to start, so as to control the vertical slide 3 and the hanging platform 6 to continue to rise, until the worker determines that the height of the rotation axis of the main frame 80 on the hanging platform 6 is close to the height position of the corresponding mounting hole of the top bracket 70, and then control the drive mechanism 4 to stop starting, so that the hanging platform 6 is suspended; S8. The worker controls the adjustment assembly 9 to fix the guide sprocket 46 and the second chain 47 relative to each other, and then starts the drive mechanism 4 to continue running. At this time, the second chain 47 drives the hanging platform 6 to move in the horizontal direction. The worker assists in pushing the hanging platform 6 to ensure that the main frame 80 on the hanging platform 6 is stably close to the top bracket 70 until the rotating shaft of the main frame 80 is inserted into the corresponding mounting hole of the top bracket 70. Then, the drive mechanism 4 is controlled to pause operation, and then the adjustment assembly 9 is controlled again to position the guide sprocket 46 on the horizontal frame 23. S9. The worker adjusts the coaxiality of the main frame 80 shaft installation through the flexible cooperation of the hanging rope on the hanging platform 6 and the transmission of the second chain 47. After the adjustment is completed, the remaining accessories and the shell are installed on the top bracket 70 and the main frame 80. Then, the patient chair 30 is installed on the chassis 20 to complete the assembly of the SPECT equipment. Finally, the forklift pallet and the equipment installed on it are moved away from the placement area 11 by a forklift.

[0052] The working principle of the embodiment of the present application is as follows: when in use, the lifting assembly 5 and the hanging platform 6 are located at the bottom, and the hanging platform 6 is suspended in mid-air. At this time, a worker can first assemble the chassis 20, the sliding seat 40, the driving structure 50, and the bottom bracket 60 one by one on the forklift pallet in the placement area 11, and then place the main frame 80 on the hanging platform 6. Then, the positions of the first support arm 51 and the third support arm 53 are adjusted, and the top bracket 70 is placed on the first support arm 51 and the third support arm 53; Installation of the top bracket 70: By starting the driving mechanism 4, the hanging platform 6 and the vertical slide 3 are driven to rise synchronously, thereby driving the top bracket 70 and the main frame 80 to rise synchronously; when the worker observes that the top bracket 70 is higher than the top of the bottom bracket 60 as a whole, the rising of the top bracket 70 can be stopped by controlling the driving mechanism 4, and then the worker manually pushes the mounting frame 2 to slide in the horizontal direction to drive the top bracket 70 to gradually approach the bottom bracket 60 until the positioning block 74 abuts the side wall of the bottom bracket 60, and the top bracket 70 moves to the top of the bottom bracket 60, and the third support arm 53 is located between the top bracket 70 and the bottom bracket 60. , then the bottom slide 21 is locked by the abutment bolt 24, and the second support arm 52 is rotated so that the second support arm 52 abuts against the third support arm 53, thereby completing the horizontal positioning of the top bracket 70; then the driving member 83 drives the slide bar 81 to move, so that the two support wheels 562 in the same group of roller assemblies 56 move in opposite directions, thereby supporting the top bracket 70 through the support wheels 562, and driving the top bracket 70 to move slowly in the vertical direction, thereby achieving the purpose of vertical positioning between the top bracket 70 and the bottom bracket 60, and thus achieving the adjustment of the installation coaxiality of the top bracket 70 and the bottom bracket 60; Installation of the main frame 80: rotate the second support arm 52 to return to its initial state, and push the third support arm 53 to disengage from between the top bracket 70 and the bottom bracket 60, rotate the first support arm 51 so that both the first support arm 51 and the third support arm 53 are away from the top bracket 70, and then start the drive mechanism 4 to make the vertical slide 3 and the hanging platform 6 continue to rise. Since the distance between the mounting hole for mounting the bottom bracket 60 on the top bracket 70 and the mounting hole for mounting the main frame 80 can be measured in advance, the rising height in this step can be accurately controlled with the distance sensor, or it can be judged by the worker When the main frame 80 rises to a height that matches the top bracket 70, the drive mechanism 4 can be controlled to stop driving; then the worker turns the adjusting screw 94 and adjusts the pressure block 92 to position the second chain 47 and the guide sprocket 46 relative to each other, and continues to start the drive mechanism 4. After that, the platform 6 gradually approaches the top bracket 70 in the horizontal direction, and then the worker assists in adjusting the position of the platform 6 until the connecting shaft of the main frame 80 is inserted into the corresponding mounting hole on the top bracket 70. After the installation is completed, the auxiliary device can be controlled to return to its initial state as a whole, thereby completing the assembly of the top bracket 70 and the main frame 80.

[0053] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A SPECT equipment installation auxiliary device, characterized by: The invention comprises a base (1), a mounting frame (2) slidably arranged on the base (1), a vertical slide (3) slidably arranged on the mounting frame (2), and a driving mechanism (4) arranged on the mounting frame (2) for driving the vertical slide (3) to rise and fall. The vertical slide (3) is provided with a lifting assembly (5) for placing a top bracket (70). The mounting frame (2) is provided with a hanging platform (6) for placing a main frame (80). The driving mechanism (4) can drive the vertical slide (3) and the hanging platform (6) to rise and fall synchronously. The vertical slide (3) is also provided with a transverse positioning structure (7) and a vertical positioning structure (8). The transverse positioning structure (7) is used to adjust the alignment of the top bracket (70) and the bottom bracket (60) in the horizontal direction. The vertical positioning structure (8) is used to adjust the alignment of the top bracket (70) and the bottom bracket (60) in the vertical direction.

2. The auxiliary device for installing a SPECT device according to claim 1, wherein: The lifting assembly (5) includes a first support arm (51) and a second support arm (52) that rotate on the vertical slide (3), and a third support arm (53) that is slidably arranged on the first support arm (51). The first support arm (51) and the third support arm (53) are both used to support the top bracket (70). After the second support arm (52) rotates, it is used to support the third support arm (53) away from one end of the first support arm (51). After the third support arm (53) slides and detaches from the top bracket (70), the first support arm (51) can be rotated to detach from the top bracket (70). The horizontal positioning structure (7) and the vertical positioning structure (8) are both arranged on the third support arm (53).

3. The auxiliary device for installing a SPECT device according to claim 2, wherein: A first slide (54) is slidably provided on the first support arm (51), a second slide (55) is slidably provided on the first slide (54), the first slide (54) and the second slide (55) have the same sliding direction, the third support arm (53) is fixedly provided on the second slide (55), a roller assembly (56) is floatingly provided on the third support arm (53), and the vertical positioning structure (8) is used to adjust the floating height of the roller assembly (56).

4. The auxiliary device for installing a SPECT device according to claim 3, wherein: The roller assembly (56) includes two symmetrically arranged wheel frames (561), a supporting wheel (562) rotating on the wheel frames (561), a first adjusting bolt (563) arranged between the two wheel frames (561), a first locking nut (564) threadedly matched with the first adjusting bolt (563), and a return spring (565) sleeved on the first adjusting bolt (563), one end of the supporting wheel (562) provided on the two wheel frames (561) is arranged in a divergent manner, the return spring (565) is located between the two wheel frames (561), and the two ends of the return spring (565) are respectively in contact with the wheel frame (561) on one side, and the first locking nut (564) and the first adjusting bolt (563) are used to prevent the two wheel frames (561) from separating from each other.

5. The auxiliary device for installing a SPECT device according to claim 4, characterized in that: The vertical positioning structure (8) includes a sliding rod (81) slidingly arranged on the third support arm (53), a first fixed block (82) fixed on the third support arm (53), and a driving member (83) arranged on the first fixed block (82) for driving the sliding rod (81) to slide. The sliding rod (81) is passed between the two wheel frames (561), and the two sides of the sliding rod (81) are respectively abutted with the wheel frames (561) on the corresponding sides. A first guide bevel (566) is provided on one end of the wheel frame (561) facing the sliding rod (81), and a second guide bevel (84) is provided on the side wall of the sliding rod (81) facing the wheel frame (561). The first guide bevel (566) and the second guide bevel (84) are abutted with each other.

6. The auxiliary device for installing a SPECT device according to claim 3, wherein: The transverse positioning structure (7) comprises a second fixing block (71) fixed on the first slide (54), a second adjusting bolt (72) passing through the second fixing block (71), a second locking nut (73) threadedly engaged with the second adjusting bolt (72), and a positioning block (74) fixed to the end of the second adjusting bolt (72), wherein the positioning block (74) abuts against the side wall of the bottom bracket (60), and two second locking nuts (73) are provided, and the two second locking nuts (73) are respectively provided on both sides of the second fixing block (71).

7. The auxiliary device for installing a SPECT device according to claim 1, characterized in that: The driving mechanism (4) comprises a driving hydraulic cylinder (41) arranged on a mounting frame (2), a fixing seat (42) fixed to the end of a piston rod of the driving hydraulic cylinder (41), a lifting sprocket (43) rotating on the fixing seat (42), a first chain (44) cooperating with the lifting sprocket (43), a plurality of driven sprockets (45) rotating on the mounting frame (2), a guide sprocket (46) sliding on the mounting frame (2), and a second chain (44) wound between the driven sprocket (45) and the guide sprocket (46). 7), one end of the first chain (44) is fixed on the mounting frame (2), the other end of the first chain (44) passes around the lifting sprocket (43) and is connected to the vertical slide (3), one end of the second chain (47) is connected to the fixed seat (42), the other end of the second chain (47) passes around the driven sprocket (45) and the guide sprocket (46) and is detachably connected to the hanging platform (6), and an adjustment component (9) is also provided on the mounting frame (2), and the adjustment component (9) is used to adjust the connection state of the guide sprocket (46) and the second chain (47).

8. A method for installing a SPECT device, implemented using the auxiliary device for installing a SPECT device according to any one of claims 1 to 7, characterized in that: The steps include: S1. Place a forklift pallet on the base (1), and assemble the chassis (20), the patient chair (30), the sliding seat (40), the driving structure (50), and the bottom bracket (60) on the forklift pallet one by one; S2. Place the top bracket (70) on the first support arm (51) and the third support arm (53), and place the main frame (80) on the hanging platform (6); S3, controlling the top bracket (70) and the main frame (80) to rise synchronously through the driving mechanism (4), pausing the raising when the top bracket (70) is higher than the bottom bracket (60), and then pushing the mounting frame (2) so that the top bracket (70) gradually approaches the bottom bracket (60), until the positioning block (74) abuts against the bottom bracket (60), and then stopping pushing the mounting frame (2), thereby completing the horizontal positioning of the top bracket (70) and the bottom bracket (60); S4, rotating the second support arm (52) until it contacts the third support arm (53), and driving the slide bar (81) to slide via the driving member (83), thereby driving the support wheel (562) to move in the vertical direction, thereby achieving the vertical positioning of the bottom bracket (60) and the top bracket (70); S5. Install the top bracket (70) on the bottom bracket (60) via the connecting shaft, and install the counterweight and the limit bracket on the top bracket (70) one by one; S6, rotating the second support arm (52) to disengage from the third support arm (53), and sliding the third support arm (53) to disengage from between the top bracket (70) and the bottom bracket (60), and then rotating the first support arm (51) to disengage from the top bracket (70); S7, controlling the vertical slide (3) to continue to rise through the driving mechanism (4), thereby driving the hanging platform (6) to rise synchronously, until the main frame (80) on the hanging platform (6) is close to the mounting hole of the top bracket (70), and then controlling the driving mechanism (4) to stop rising; S8, fix the guide sprocket (46) and the second chain (47) relative to each other through the adjustment component (9), then start the driving mechanism (4) to continue running, thereby driving the hanging platform (6) to move horizontally, and the worker assists in pushing the hanging platform (6) until the rotating shaft of the main frame (80) is inserted into the corresponding installation hole, and then control the driving mechanism (4) to suspend operation; S9. The worker adjusts the coaxiality of the main frame (80) shaft installation through the flexible cooperation of the hanging rope on the hanging platform (6). After the adjustment is completed, the remaining accessories and the shell are installed to complete the assembly of the SPECT equipment.

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