CT machine rotation locking device with locking detection function

Abstract

The utility model relates to a CT (Computed Tomography) machine rotation locking device with a locking detection function, which comprises a locking detection mechanism and a bolt mechanism, the locking detection mechanism comprises a detection element and a movable detection shaft, the bolt mechanism comprises a guide sleeve and a locking pin shaft, a fixing frame is arranged at the upper end of the guide sleeve, and the locking pin shaft is arranged on the fixing frame. Limiting clamping grooves are formed in the front side and the rear side of the fixing frame, a triggering clamping groove is formed in the side, close to the locking detection mechanism, of the fixing frame, the locking pin shaft is inserted into the guide sleeve, a clamping pin is arranged at the upper end of the locking pin shaft and arranged in the fixing frame, and when the clamping pin rotates from the limiting clamping grooves to the triggering clamping groove, the locking pin shaft is locked. And the detection shaft is driven by the bayonet lock to move backwards to trigger the detection element. The locking detection mechanism is used for detecting the state of the locking pin shaft in real time, and safe operation of equipment can be guaranteed.

Description

Technical Field

[0001] The utility model relates to the field of medical equipment, in particular to a CT machine rotation locking device with a locking detection function. Background Art

[0002] During operation, a CT scanner uses a rotating body to drive the detector, X-ray source, and other components to perform scanning. To ensure stable and safe operation, the rotating body is typically equipped with a rotation locking pin assembly, which secures the body when the CT scanner is not in operation. However, in actual operation, it has been found that if the operator forgets to remove the locking pin and attempts to rotate the rotating body, the control system will not be able to detect and output the corresponding control signal, resulting in the rotating body not being able to rotate normally and potentially causing damage to the equipment.

[0003] Patent publication number CN113740363B discloses a locking assembly for a CT detection device and a CT detection device. The assembly comprises a first hole on the periphery of a rotating frame and a second hole aligned with at least one of the first holes on the periphery of a support frame. However, the assembly is designed to utilize a first sleeve to detachably engage within the aligned first and second holes, and to lock the rotating frame when replacing a slip ring bearing. The assembly does not emit a sensing signal if the operator forgets to remove the locking pin.

[0004] Patent publication number CN110916698B discloses a self-locking CT gantry and a vehicle-mounted CT machine, which are equipped with an adaptive locking control system on the main frame and the rotatably connected tilting gantry. The locking control system includes a pin holder, a latch, a drive device, and a position sensor. The drive device is provided on the tilting gantry to drive the latch to switch between a locked position and an unlocked position. The position sensor is used to detect the position of the latch to determine the locked and unlocked positions of the latch and the pin holder. However, this device requires the provision of a first position sensor and a second position sensor for coordinated detection, resulting in a relatively complex structure. Utility Model Content

[0005] The purpose of the utility model is to provide a CT machine rotation locking device with a locking detection function, which utilizes a locking detection mechanism to detect the state of a locking pin in real time, thereby ensuring the safe operation of the equipment.

[0006] The purpose of this utility model is achieved through the following technical solutions:

[0007] A CT machine rotation locking device with a lock detection function includes a lock detection mechanism and a latch mechanism, wherein the lock detection mechanism includes a detection element and a movable detection shaft, and the latch mechanism includes a guide sleeve and a locking pin shaft, and the upper end of the guide sleeve is provided with a fixing frame, and the front and rear sides of the fixing frame are provided with limit slots, and the side of the fixing frame close to the lock detection mechanism is provided with a trigger slot, and the locking pin shaft is inserted into the guide sleeve, and the upper end of the locking pin shaft is provided with a latch pin placed in the fixing frame. When the latch pin rotates from the limit slot to the trigger slot, the detection shaft is driven by the latch pin to move backward to trigger the detection element.

[0008] The upper end of the locking pin is provided with a handle, a spring stopper and a pin spring, wherein the spring stopper and the pin spring are both arranged in the fixing frame, and the pin spring is sleeved on the locking pin, the upper end of the pin spring is against the top plate of the fixing frame, and the lower end is against the spring stopper, and the lower end of the handle passes through the top plate of the fixing frame and is fixedly connected to the upper end of the locking pin.

[0009] The fixing frame is provided with a first limiting slot on the front side and a second limiting slot on the rear side, and when the locking pin is in the unlocked state, the front end of the pin is placed in the first limiting slot and the rear end is placed in the second limiting slot.

[0010] A slot baffle is provided on the side of the fixing frame close to the locking detection mechanism, and the triggering slot is formed between the two slot baffles. The side of the fixing frame away from the locking detection mechanism is in an open state without a baffle.

[0011] A guide sleeve end plate is provided at the upper end of the guide sleeve, and the fixing frame is installed on the guide sleeve end plate. When the locking pin is in a locked state, both ends of the bayonet are restrained against the guide sleeve end plate.

[0012] The front end of the detection shaft is provided with an abutment groove with an inclined bottom, and when the bayonet is rotated from the limit slot to the trigger slot position, the end of the bayonet falls into the abutment groove and abuts against the bottom of the abutment groove.

[0013] The locking detection mechanism includes a mounting base, and the mounting base is provided with a first guide seat at the head end, a second guide seat in the middle, and the detection element at the tail end. The head end of the detection shaft is provided with a guide slider passing through the first guide seat, and the tail end of the detection shaft passes through the second guide seat. A detection shaft spring is mounted on the detection shaft, and the front end of the detection shaft spring is against the stop table formed on the rear side of the guide slider, and the rear end is against the second guide seat.

[0014] The guide slider at the head end of the detection shaft is inserted into the first guide hole on the first guide seat, and a slider plane is formed on the upper side of the guide slider, a limiting protrusion is formed at the rear end of the slider plane, and the inner wall of the upper side of the first guide hole forms a guide hole plane that cooperates with the slider plane.

[0015] Both sides of the second guide seat are fixed to the mounting base by first screws. The mounting base is provided with at least one set of threaded holes, and the first screws pass through the second guide seat and are inserted into the corresponding threaded holes.

[0016] A bracket is provided at the rear end of the mounting base plate, and the detection element is fixed on the bracket.

[0017] The advantages and positive effects of this utility model are:

[0018] 1. The utility model utilizes a lock detection mechanism to detect the status of the locking pin in real time, wherein a rotatable latch is provided at the upper end of the locking pin in the latch mechanism, and when the locking pin is in the locked position, the latch abuts against the detection shaft in the lock detection mechanism and triggers the detection element, thereby enabling the equipment control system to timely sense the insertion and removal status of the locking pin, thereby ensuring the safe operation of the equipment.

[0019] 2. The overall structure of the present invention is simple and compact. In the latch mechanism, the latch, spring block, pin spring and other components at the upper end of the locking pin shaft are all centrally arranged in a fixed frame at the upper end of the guide sleeve, and the fixed frame is provided with a limit slot and a trigger slot for cooperating to limit the position of the latch in different states, thereby not increasing the installation volume of the latch mechanism. In the lock detection mechanism, the detection shaft, detection shaft spring, detection elements, etc. are centrally arranged on a mounting base, and the overall transfer and installation is convenient.

[0020] 3. The utility model can detect the state of the locking pin in real time using one detection element, which reduces production costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the structure of the utility model.

[0022] Figure 2 This is a schematic diagram of the working state of the utility model Figure 1 ,

[0023] Figure 3 This is a schematic diagram of the working state of the utility model Figure 2 ,

[0024] Figure 4 for Figure 1 Schematic diagram of the locking detection mechanism.

[0025] Figure 5 for Figure 4 Exploded diagram of the locking detection mechanism.

[0026] Figure 6 This is a schematic diagram of the cooperation between the utility model and the rotating body of the CT machine.

[0027] Among them, 1 is a locking detection mechanism, 101 is a detection shaft, 1011 is an abutment groove, 1012 is a slider plane, 1013 is a limit protrusion, 1014 is a stop table, 102 is a mounting base, 1021 is a first guide seat, 1022 is a guide hole plane, 103 is a detection shaft spring, 104 is a second guide seat, 105 is a bracket, 106 is a detection element, 107 is a fixing screw, 108 is a bracket screw, 109 is the second screw, 110 is the first screw, 111 is the third screw, 2 is the latch mechanism, 201 is the spring block, 202 is the pin spring, 203 is the handle, 204 is the fixing frame, 2041 is the first limiting slot, 2042 is the slot baffle, 2043 is the second limiting slot, 205 is the bayonet, 206 is the guide sleeve, 2061 is the guide sleeve end plate, 207 is the locking pin, and 3 is the CT machine rotating body. DETAILED DESCRIPTION

[0028] The present invention will be further described below in conjunction with the accompanying drawings.

[0029] like Figures 1 to 6 As shown, the utility model includes a lock detection mechanism 1 and a latch mechanism 2, wherein Figures 4-5 As shown, the locking detection mechanism 1 includes a detection element 106 and a movable detection shaft 101. Figures 1 to 3 As shown, the latch mechanism 2 includes a guide sleeve 206 and a locking pin 207, and a fixing frame 204 is provided on the upper end of the guide sleeve 206. The fixing frame 204 is provided with limit slots on both the front and rear sides. The fixing frame 204 is provided with a trigger slot on the side close to the locking detection mechanism 1. The locking pin 207 is inserted into the guide sleeve 206, and a bayonet 205 is provided on the upper end of the locking pin 207 and placed in the fixing frame 204. Figure 3 As shown, when the latch 205 rotates from the limit slot to the trigger slot position, the detection shaft 101 is driven backward by the latch 205 to trigger the detection element 106. At the same time, the lower end of the locking pin 207 extends from the lower end of the guide sleeve 206 and is inserted into the pin hole on the CT machine rotator 3 to achieve locking. At this time, the detection element 106 sends a signal to the equipment control system to determine the status of the locking pin 207 in real time.

[0030] like Figures 1 to 3As shown, in this embodiment, the upper end of the locking pin 207 is provided with a handle 203, a spring stopper 201 and a pin spring 202, wherein the spring stopper 201 and the pin spring 202 are both provided in the fixing frame 204, and the pin spring 202 is sleeved on the locking pin 207, the upper end of the pin spring 202 abuts against the top plate of the fixing frame 204, and the lower end abuts against the spring stopper 201, and the lower end of the handle 203 passes through the top plate of the fixing frame 204 and is fixedly connected to the upper end of the locking pin 207. When the present utility model is used, the operator lifts the handle 203 to raise the locking pin 207, thereby causing the latch 205 at the upper end of the locking pin 207 to be in a state of being out of the limit slot or the trigger slot to achieve free rotation, wherein as Figure 1 As shown, when the latch 205 rotates clockwise from the trigger slot to the limit slot position and the end falls into the corresponding limit slot, the locking pin 207 rises and retracts into the guide sleeve 206 and no longer locks the rotating body 3, as shown in FIG. Figure 3 As shown, the operator rotates the handle 203 to rotate the latch 205 counterclockwise from the limit slot to the trigger slot position, and when the end falls to the bottom of the trigger slot, the detection shaft 101 abuts against the latch 205 and is driven backward by the latch 205 to trigger the detection element 106. Furthermore, when the latch 205 is rotated into position, the operator releases the handle 203, and the locking pin 207 automatically moves downward under the action of the pin spring 202, causing the latch 205 to automatically engage with the limit slot or the trigger slot.

[0031] like Figures 1 to 3 As shown, in this embodiment, the front side of the fixing frame 204 is provided with a first limiting slot 2041 and the rear side is provided with a second limiting slot 2043. When the locking pin 207 is in the unlocked state, the front end of the pin 205 is placed in the first limiting slot 2041 and the rear end is placed in the second limiting slot 2043.

[0032] like Figures 1 to 3 As shown, in this embodiment, a slot baffle 2042 is provided on the side of the fixing frame 204 close to the locking detection mechanism 1 , and the trigger slot is formed between the two slot baffles 2042 .

[0033] like Figures 1 to 3 As shown, in this embodiment, the upper end of the guide sleeve 206 is provided with a guide sleeve end plate 2061, and the fixing frame 204 is installed on the guide sleeve end plate 2061. The side of the fixing frame 204 away from the locking detection mechanism 1 is an open state with no baffle design, as shown in FIG. Figure 3As shown, when the locking pin 207 is in the locked state, the two ends of the pin 205 directly abut against the guide sleeve end plate 2061 for limiting position, and since the position of the guide sleeve end plate 2061 is lower than the bottom position of the first limiting slot 2041 and the second limiting slot 2043, it can be ensured that the lower end of the locking pin 207 extends out from the lower end of the guide sleeve 206.

[0034] like Figure 4 As shown, in this embodiment, the front end of the detection shaft 101 is provided with an abutment groove 1011, and the bottom of the abutment groove 1011 is designed as an inclined surface. Figure 2 As shown, when the pin 205 rotates to the abutment position with the front end of the detection shaft 101, after the operator releases the handle 203, the end of the pin 205 can fall into the abutment groove 1011 to ensure the accurate position. At the same time, under the driving action of the pin spring 202, the end of the pin 205 can slide downward along the bottom inclined surface of the abutment groove 1011, thereby driving the detection shaft 101 to retreat and trigger the detection element 106.

[0035] like Figures 4-5 As shown, in this embodiment, the locking detection mechanism 1 includes a mounting base 102, and the mounting base 102 is provided with a first guide seat 1021 at the head end, a second guide seat 104 in the middle, and the detection element 106 at the tail end, the detection shaft 101 is provided with a guide slider at the head end passing through the first guide seat 1021, and the tail end of the detection shaft 101 passes through the second guide seat 104, and the detection shaft 101 is provided with a detection shaft spring 103 to achieve automatic reset, and the front end of the detection shaft spring 103 is abutted against the stop table 1014 formed on the rear side of the guide slider, and the rear end is abutted against the second guide seat 104.

[0036] like Figure 5 As shown, in this embodiment, the guide slider at the head end of the detection shaft 101 is inserted into the first guide hole on the first guide seat 1021, and a slider plane 1012 is formed on the upper side of the guide slider, and a limiting protrusion 1013 is formed at the rear end of the slider plane 1012. The upper inner wall of the first guide hole forms a guide hole plane 1022 that cooperates with the slider plane 1012. In this way, when the detection shaft 101 moves forward and extends, the limiting protrusion 1013 can be against the rear surface of the first guide seat 1021 to limit the forward displacement of the detection shaft 101.

[0037] like Figures 4-5As shown, in this embodiment, the second guide seat 104 is fixed to the mounting base 102 on both sides by first screws 110, and the mounting base 102 can be provided with one or more sets of threaded holes along the length direction as needed. The provision of multiple sets of threaded holes can achieve the purpose of adjusting the position of the second guide seat 104, and thus the compression force of the detection shaft spring 103 can be adjusted according to actual needs to match the triggering force of different detection elements 106. When the position of the second guide seat 104 is determined, the first screw 110 passes through the second guide seat 104 and is then threaded into a corresponding set of threaded holes on the mounting base 102. (Multiple sets of threaded holes are reserved, as long as the logic is feasible)

[0038] like Figures 4-5 As shown, in this embodiment, a bracket 105 is provided at the rear end of the mounting base 102 , and the detection element 106 is fixedly mounted on the bracket 105 .

[0039] In this embodiment, the detection element 106 may be a micro switch, which is a well-known technology in the art and is a commercially available product. Figures 4-5 As shown, in this embodiment, the micro switch is fixed to the bracket 105 by a fixing screw 107, and the bracket 105 is fixed to the mounting base 102 by a bracket screw 108. The rear end of the mounting base 102 is fixed to the corresponding frame of the CT machine by a second screw 109 and the head end is fixed by a third screw 111, wherein two third screws 111 are respectively provided on both sides of the first guide seat 1021.

[0040] The working principle of this utility model is:

[0041] When the present invention is used, the operator lifts the handle 203 to raise the locking pin 207, thereby making the latch 205 at the upper end of the locking pin 207 disengage from the limit slot or the trigger slot to achieve free rotation, wherein Figure 1 As shown, when the latch 205 rotates clockwise from the trigger slot to the limit slot position and the end falls into the corresponding limit slot, the locking pin 207 rises and retracts into the guide sleeve 206 and no longer locks the rotating body 3, as shown in FIG. Figure 3 As shown, when the operator rotates the handle 203 to rotate the pin 205 counterclockwise from the limit slot to the trigger slot position, after the operator releases the handle 203, the end of the pin 205 can fall into the abutment slot 1011 at the head end of the detection shaft 101, and under the driving action of the pin spring 202, the end of the pin 205 slides downward along the bottom inclined surface of the abutment slot 1011, thereby driving the detection shaft 101 to retreat and trigger the detection element 106.

Claims

1. A CT machine rotation locking device with a lock detection function, characterized in that: The invention comprises a locking detection mechanism (1) and a latch mechanism (2), wherein the locking detection mechanism (1) comprises a detection element (106) and a movable detection shaft (101), and the latch mechanism (2) comprises a guide sleeve (206) and a locking pin shaft (207), wherein the upper end of the guide sleeve (206) is provided with a fixing frame (204), the front and rear sides of the fixing frame (204) are provided with limit slots, the side of the fixing frame (204) close to the locking detection mechanism (1) is provided with a trigger slot, the locking pin shaft (207) is inserted into the guide sleeve (206), and the upper end of the locking pin shaft (207) is provided with a latch pin (205) placed in the fixing frame (204), and when the latch pin (205) is rotated from the limit slot to the trigger slot, the detection shaft (101) is driven by the latch pin (205) to move backward to trigger the detection element (106).

2. The CT machine rotation locking device with a lock detection function according to claim 1, characterized in that: The upper end of the locking pin shaft (207) is provided with a handle (203), a spring stopper (201) and a pin shaft spring (202), wherein the spring stopper (201) and the pin shaft spring (202) are both arranged in the fixing frame (204), and the pin shaft spring (202) is sleeved on the locking pin shaft (207), the upper end of the pin shaft spring (202) is against the top plate of the fixing frame (204), and the lower end is against the spring stopper (201), and the lower end of the handle (203) passes through the top plate of the fixing frame (204) and is fixedly connected to the upper end of the locking pin shaft (207).

3. The CT machine rotation locking device with a lock detection function according to claim 1, characterized in that: The fixing frame (204) is provided with a first limiting slot (2041) on the front side and a second limiting slot (2043) on the rear side, and when the locking pin shaft (207) is in an unlocked state, the front end of the locking pin (205) is placed in the first limiting slot (2041) and the rear end is placed in the second limiting slot (2043).

4. The CT machine rotation locking device with a lock detection function according to claim 1, characterized in that: A card slot baffle (2042) is provided on the side of the fixing frame (204) close to the locking detection mechanism (1), and the triggering card slot is formed between the two card slot baffles (2042). The side of the fixing frame (204) away from the locking detection mechanism (1) is in an open state without a baffle.

5. The CT machine rotation locking device with a lock detection function according to claim 1, characterized in that: A guide sleeve end plate (2061) is provided at the upper end of the guide sleeve (206), and the fixing frame (204) is mounted on the guide sleeve end plate (2061). When the locking pin shaft (207) is in a locked state, both ends of the bayonet (205) abut against the guide sleeve end plate (2061) to limit the position.

6. The CT machine rotation locking device with a lock detection function according to claim 1, characterized in that: The front end of the detection shaft (101) is provided with an abutment groove (1011) whose bottom is an inclined surface, and when the latch (205) is rotated from the limit latch groove to the trigger latch groove position, the end of the latch (205) falls into the abutment groove (1011) and abuts against the bottom of the abutment groove (1011).

7. The CT machine rotation locking device with a lock detection function according to claim 1, characterized in that: The locking detection mechanism (1) comprises a mounting base (102), wherein the mounting base (102) is provided with a first guide seat (1021) at the head end, a second guide seat (104) at the middle part, and the detection element (106) at the tail end; the detection shaft (101) is provided with a guide slider passing through the first guide seat (1021) at the head end, and the detection shaft (101) passes through the second guide seat (104) at the tail end; a detection shaft spring (103) is mounted on the detection shaft (101), and the front end of the detection shaft spring (103) abuts against a stop table (1014) formed on the rear side of the guide slider, and the rear end abuts against the second guide seat (104).

8. The CT machine rotation locking device with a lock detection function according to claim 7, characterized in that: The guide slider at the head end of the detection shaft (101) is inserted into the first guide hole on the first guide seat (1021), and a slider plane (1012) is formed on the upper side of the guide slider, a limiting protrusion (1013) is formed at the rear end of the slider plane (1012), and a guide hole plane (1022) that cooperates with the slider plane (1012) is formed on the inner wall of the upper side of the first guide hole.

9. The CT machine rotation locking device with a lock detection function according to claim 7, characterized in that: Both sides of the second guide seat (104) are fixed to the mounting base (102) by means of first screws (110); the mounting base (102) is provided with at least one set of threaded holes, and the first screws (110) pass through the second guide seat (104) and are inserted into the corresponding threaded holes.

10. The CT machine rotation locking device with a lock detection function according to claim 7, characterized in that: A bracket (105) is provided at the rear end of the mounting base plate (102), and the detection element (106) is fixed on the bracket (105).

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