Rod piece locking device and CT examination bed

Abstract

The utility model provides a rod piece locking device and a CT examination bed. The rod piece locking device comprises a fixing block, a clamping block and a connecting piece. A clamping hole and a mounting hole are formed in the fixing block body, the clamping hole penetrates through the fixing block in the first direction, the mounting hole penetrates through the fixing block in the second direction, and the first direction is perpendicular to the second direction; the clamping hole and the mounting hole have a crossed part in the fixing block; and rod pieces are inserted into the mounting holes. The clamping blocks are arranged in the clamping hole and comprise the first clamping block and the second clamping block which are located on the two sides of the crossed portion of the clamping hole and the mounting hole respectively. The connecting piece is connected with the first clamping block and the second clamping block and used for adjusting the first clamping block and the second clamping block to be close to each other or away from each other. After a rod piece is inserted into the mounting hole, the first clamping block and the second clamping block are close to each other to clamp the rod piece. According to the technical scheme, rotation or axial movement of the rod piece can be limited, and the device can be used for assisting transportation of structures and components connected with the rod piece.

Description

Technical Field

[0001] This application relates to the field of rod installation and fixation, and more particularly, to a rod locking device and a CT examination bed. Background Art

[0002] In a CT machine, a lead screw nut is usually fixedly installed under the support bed board of the CT examination bed. By cooperating with a motor and a lead screw, the CT examination bed can perform linear motion along a specified direction, thereby realizing the function of sending and receiving a patient into and out of the CT scanner.

[0003] However, in the prior art, when the CT machine is not powered on, the motor and the lead screw are in a disconnected state. Therefore, the lead screw can rotate freely, enabling the support bed board to move freely along the axial direction of the lead screw. Thus, during the transportation of the CT machine, if the lead screw is not fixed to restrict its movement, the support bed board is likely to slide back and forth. On the one hand, there is a risk of damaging the machine, which may bump into its own components and surrounding items. In particular, the lead screw nut may be deformed under the impact, causing the support bed board to malfunction. On the other hand, it may lead to an unstable center of gravity of the machine, causing the machine to lose balance and resulting in a transportation accident. Summary of the Utility Model

[0004] The purpose of the embodiments of this application is to provide a rod locking device and a CT examination bed, which can lock the rod and restrict the rod from rotating or moving axially. When applied to the bed board of the CT examination bed, the lead screw is equivalent to the rod, and the rod locking device can lock the lead screw to prevent it from rotating, thereby fixing the position of the bed board of the CT examination bed, preventing the bed board from moving back and forth during transportation, stabilizing the center of gravity position, maintaining transportation balance, avoiding collisions of each component, and also avoiding more serious transportation accidents.

[0005] In a first aspect, this application provides a rod locking device, including a fixed block, a clamping block, and a connecting member.

[0006] A clamping hole and an installation hole are provided in the body of the fixed block. The clamping hole penetrates the fixed block along a first direction, and the installation hole penetrates the fixed block along a second direction. The first direction is perpendicular to the second direction; there is an intersection part between the clamping hole and the installation hole inside the fixed block; the rod is inserted into the installation hole. The clamping block is arranged in the clamping hole and includes a first clamping block and a second clamping block, which are respectively located on both sides of the intersection part of the clamping hole and the installation hole. The connecting member connects the first clamping block and the second clamping block, and is used to adjust the first clamping block and the second clamping block to approach or move away from each other. Among them, after the rod is inserted into the installation hole, the first clamping block and the second clamping block approach each other to clamp the rod at the intersection part of the clamping hole and the installation hole.

[0007] In an implementable solution, a through hole is provided along the body of the first clamping block, and a threaded hole is provided on the side of the second clamping block facing the first clamping block. The connecting member includes a screw, and the screw passes through the through hole of the first clamping block and forms a threaded connection with the threaded hole of the second clamping block.

[0008] In an implementable solution, the connecting member further includes a spring. The spring is located between the first clamping block and the second clamping block and is sleeved on the screw. When the two clamping blocks clamp the rod, the spring gives the first clamping block and the second clamping block a force to move away from each other.

[0009] In an implementable solution, the sides of the first clamping block and the second clamping block for abutting against the surface of the rod are provided as arc-shaped surfaces or inclined surfaces.

[0010] In an implementable solution, the rod locking device further includes a limiter. The limiter includes a first limiter for restricting the moving distance of the first clamping block in the clamping hole along a first direction, and / or includes a second limiter for restricting the moving distance of the second clamping block in the clamping hole along the first direction.

[0011] In an implementable solution, taking the intersection part of the clamping hole and the mounting hole as the boundary, the clamping hole is divided into a first clamping hole section and a second clamping hole section. The first clamping block is located in the first clamping hole section, and the second clamping block is located in the second clamping hole section. The body of the fixing block is further provided with a first through hole and a second through hole. The first through hole penetrates from the surface of the fixing block to the inside of the first clamping hole section, and the second through hole penetrates from the surface of the fixing block to the inside of the second clamping hole section. The outer wall of the first clamping block is provided with a first limiting groove extending a predetermined length along the first direction, and the outer wall of the second clamping block is provided with a second limiting groove extending a predetermined length along the first direction. The first limiter is installed in the first through hole and inserted into the first limiting groove, and the second limiter is installed in the second through hole and inserted into the second limiting groove.

[0012] In an implementable solution, internal threads are provided in both the first through hole and the second through hole, and both the first limiter and the second limiter are set screws.

[0013] In an implementable solution, the cross-section of the clamping hole is circular, and the outer shapes of the first clamping block and the second clamping block are cylindrical shapes adapted to the cross-section of the clamping hole. The first limiter restricts the first clamping block from rotating circumferentially. The second limiter restricts the second clamping block from rotating circumferentially.

[0014] In an implementable solution, the cross-section of the clamping hole is polygonal, and the outer shapes of the first clamping block and the second clamping block are prismatic shapes adapted to the cross-section of the clamping hole.

[0015] In a second aspect, the present application further provides a CT examination table, which includes a motor, a lead screw, a table body, and a table board, and further includes a rod locking device. The motor is installed on the table body, the fixed block of the rod locking device is installed on the upper surface of the table body, and the lead screw passes through the mounting hole of the fixed block of the rod locking device and is connected to the motor. The table board is movably installed on the table body and is connected to the lead screw.

[0016] Compared with the prior art, the beneficial effects of the present application at least include:

[0017] The rod locking device of the present application can lock the rod, restrict the rod from generating circumferential rotation or axial movement, and can be used to assist in the transportation of the structures and components connected to the rod, prevent unexpected position movement during transportation, improve transportation stability, and also help to avoid structural bumps or damages.

[0018] When the rod locking device of the present application is applied to the table board of the CT examination table, the lead screw is equivalent to the rod, and the rod locking device can lock the lead screw to prevent it from rotating, thereby fixing the position of the table board of the CT examination table, preventing the table board from moving and sliding back and forth during transportation, stabilizing the center of gravity position, maintaining transportation balance, avoiding bumps on each component, and also avoiding more serious transportation accidents. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings required for the embodiments. It should be understood that the following drawings only show some embodiments of the present application, and therefore should not be regarded as limiting the scope. For those of ordinary skill in the art, without creative efforts, other related drawings can also be obtained based on these drawings.

[0020] Figure 1 FIG. 18 is an exploded perspective view of a rod locking device with a cylindrical clamping block according to an embodiment of the present application;

[0021] Figure 2 FIG. 22 is an exploded perspective view of a rod locking device with a prismatic clamping block according to an embodiment of the present application;

[0022] Figure 3 FIG. 26 is a schematic cross-sectional view of a rod locking device according to an embodiment of the present application;

[0023] Figure 4 FIG. 30 is a schematic diagram showing the rod locking device locking the rod;

[0024] Figure 5 FIG. 34 is a schematic diagram of a partial structure of a CT examination table according to an embodiment of the present application.

[0025] In the figure: 1. Fixed block; 101. Clamping hole; 102. Mounting hole; 111. First through hole; 112. Second through hole; 201. First clamping block; 202. Second clamping block; 301. Screw; 302. Spring; 401. First limiter; 402. Second limiter; 501. First limiting groove; 502. Second limiting groove; 6. Rod; L1. First direction; L2. Second direction; L3. Third direction; 10. Rod locking device; 20. Motor; 30. Lead screw; 40. Bed body. Detailed implementation mode

[0026] To make the objectives, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. Usually, the components of the embodiments of the present application described and shown in the accompanying drawings here can be arranged and designed in various different configurations.

[0027] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application claimed, but merely represents the selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present application.

[0028] As Figures 1 - 4 shown, this embodiment provides a rod locking device, including a fixed block 1, a clamping block and a connecting piece.

[0029] Among them, a clamping hole 101 and a mounting hole 102 are provided in the body of the fixed block 1. The clamping hole 101 penetrates the fixed block 1 along the first direction L1, and the mounting hole 102 penetrates the fixed block 1 along the second direction L2. The first direction L1 is perpendicular to the second direction L2. There is an intersecting part between the clamping hole 101 and the mounting hole 102 inside the fixed block 1, and the rod 6 is inserted into the mounting hole 102.

[0030] The clamping block is arranged in the clamping hole 101, and it includes a first clamping block 201 and a second clamping block 202, which are respectively located on both sides of the intersecting part of the clamping hole 101 and the mounting hole 102. The connecting piece connects the first clamping block 201 and the second clamping block 202, and the connecting piece is used to adjust the first clamping block 201 and the second clamping block 202 to approach or move away from each other. Among them, after the rod 6 is inserted into the mounting hole 102, the first clamping block 201 and the second clamping block 202 approach each other to clamp the rod 6 at the intersecting part of the clamping hole 101 and the mounting hole 102.

[0031] The shape of the fixing block 1 can be a cuboid, a cylinder, a sphere, etc., without special restrictions in this text. It should be noted that the rod locking device has a locked state and an unlocked state. When in use, adjust the positions of the first clamping block 201 and the second clamping block 202 so that they are as close to each other as possible or closely fit together. Part or all of the two clamping blocks will enter the mounting hole 102, making the cross-section of the mounting hole 102 smaller. At this time, the rod 6 will closely fit with the surface of the clamping block and the inner wall of the mounting hole 102 and cannot rotate freely, and the rod locking device enters the locked state. Adjust the two clamping blocks to move away from each other and disengage from the surface of the rod 6, and the rotation of the rod 6 will no longer be restricted, and the rod locking device enters the unlocked state.

[0032] In the rod locking device of this embodiment, the rod 6 is inserted into the mounting hole 102 of the fixing block 1. By adjusting the first clamping block 201 and the second clamping block 202 to be close to each other through the connecting piece, the rod can be locked, restricting the rod 6 from generating circumferential rotation or axial movement, which is helpful for the transportation of the structures and components connected to the rod 6, preventing unexpected position displacement during transportation, improving transportation stability, and also helping to avoid structural bumps or damages. When it is not necessary to lock the rod 6, just adjust the first clamping block 201 and the second clamping block 202 to move away from each other through the connecting piece, and the rod 6 returns to the free state.

[0033] When the rod locking device of the present application is applied to the bed board of a CT examination bed, the lead screw is equivalent to the rod, and the rod locking device can lock the lead screw to prevent it from rotating, thereby fixing the position of the bed board of the CT examination bed, preventing the bed board from moving and sliding back and forth during transportation, stabilizing the center of gravity position, maintaining transportation balance, avoiding bumps on each component, and also avoiding more serious transportation accidents.

[0034] In one embodiment, as Figure 3 shown, the first clamping block 201 is provided with a through hole along its body, and the second clamping block 202 is provided with a threaded hole on the side facing the first clamping block 201. The connecting piece includes a screw 301, and the screw 301 passes through the through hole of the first clamping block 201 and forms a threaded connection with the threaded hole of the second clamping block 202. When in use, rotate the screw 301 to drive the two clamping blocks to approach each other until they fit, and the rod 6 can be clamped, making the rod locking device enter the locked state. Rotate the screw 301 in the reverse direction to drive the two clamping blocks to move away from each other, and the rod locking device enters the unlocked state.

[0035] In one embodiment, as Figures 1 - 3 shown, the connecting piece further includes a spring 302. The spring 302 is located between the first clamping block 201 and the second clamping block 202 and is sleeved on the screw 301. When the two clamping blocks clamp the rod 6, the spring 302 gives the first clamping block 201 and the second clamping block 202 a force to move away from each other.

[0036] As Figure 3 shown, circular hole grooves can be respectively provided on the bottom surfaces of the mutually facing ends of the first clamping block 201 and the second clamping block 202. The diameters of the two circular hole grooves are the same and match the diameter size of the spring 302. Both ends of the spring 302 are respectively located in the two circular hole grooves. At the same time, the diameter of the through hole of the first clamping block 201 and the diameter of the threaded hole of the second clamping block 202 are both smaller than the diameter of the aforementioned circular hole groove. Therefore, step structures can be formed at the junctions of the circular hole groove and the through hole, and the circular hole and the threaded hole. The spring 302 is arranged between the two aforementioned step structures.

[0037] When the rod locking device is in the locked state, the spring 302 is in a compressed state. Both ends of the spring 302 can respectively apply thrusts to the two clamping blocks through the two step structures. In this way, during the process of adjusting the two clamping blocks to move away from each other, through the action of the spring 302, the first clamping block 201 and the second clamping block 202 can always have a tendency to move away from each other, which is convenient for separating the first clamping block 201 and the second clamping block 202.

[0038] In an embodiment, as Figure 3 shown, the sides of the first clamping block 201 and the second clamping block 202 for abutting against the surface of the rod 6 are provided as arc surfaces or inclined surfaces. The arc surface or the inclined surface can increase the contact area between the clamping block and the surface of the rod 6, prevent the sharp part from coming into contact with the surface of the rod 6, and reduce the possibility of wear or bruising of the rod 6. In addition, a buffer layer can also be provided at the part where the clamping block contacts the rod 6 and on the inner wall of the clamping hole 101 to better protect the rod 6. The buffer layer can be made of a soft material such as rubber.

[0039] In an embodiment, as Figures 1 - 3 shown, the rod locking device further includes a stopper. The stopper includes a first stopper 401 for restricting the moving distance of the first clamping block 201 in the clamping hole 101 along the first direction L1, and / or includes a second stopper 402 for restricting the moving distance of the second clamping block 202 in the clamping hole 101 along the first direction L1. The functions of the stopper at least include: enabling the clamping block to move only axially in the clamping hole 101 within a certain distance and preventing the clamping block from detaching from the fixed block 1.

[0040] In an embodiment, as Figure 3As shown, the intersection of the clamping hole 101 and the mounting hole 102 is used as the boundary to divide the clamping hole 101 into a first clamping hole section and a second clamping hole section. The first clamping block 201 is located in the first clamping hole section, and the second clamping block 202 is located in the second clamping hole section. The main body of the fixing block 1 is also provided with a first through hole 111 and a second through hole 112. The first through hole 111 extends from the surface of the fixing block 1 to the first clamping hole section, and the second through hole 112 extends from the surface of the fixing block 1 to the second clamping hole section. The outer wall of the first clamping block 201 is provided with a first limiting groove 501 extending along the first direction, and the outer wall of the second clamping block 202 is provided with a second limiting groove 502 extending along the first direction. The first stopper 401 is installed in the first through-hole 111 and inserted into the first stopper groove 501 on the outer wall of the first clamping block 201. The second stopper 402 is installed in the second through-hole 112 and inserted into the second stopper groove 502 on the outer wall of the second clamping block 202. Thus, after the stoppers are in place, the two clamping blocks can only move along their own axis within the length range of their respective stopper grooves and cannot completely separate from the fixing block 1. This effectively prevents the inconvenience caused by the clamping blocks falling.

[0041] In one embodiment, internal threads are provided inside the first through hole 111 and the second through hole 112, and the first limiter 401 and the second limiter 402 can be configured as jackscrews. Furthermore, a limiter device including but not limited to a limit pin or a limit block can also be used as a limiter to similarly limit the range of motion of the clamping block.

[0042] In one embodiment, if Figure 1 As shown, the cross-section of the clamping hole 101 is set to be circular, and the outer shapes of the first clamping block 201 and the second clamping block 202 are set to be cylindrical to match the cross-section of the clamping hole 101. When a circular clamping hole 101 and a cylindrical clamping block are used, the first limiter 401 can also limit the circumferential rotation of the first clamping block 201, and the second limiter 402 can also limit the circumferential rotation of the second clamping block 202. Specifically, the portion of the first limiter 401 located in the first limiting groove 501 matches the circumferential dimension of the first limiting groove 501 along the first clamping block 201; the portion of the second limiter 402 located in the second limiting groove 502 matches the circumferential dimension of the second limiting groove 502 along the second clamping block 202. This ensures that the rod is always in contact with the curved surface or inclined surface of the clamping block, preventing the surface of the rod from being damaged by sharp corners.

[0043] In one embodiment, if Figure 2 As shown, the cross section of the clamping hole 101 is set to be polygonal, and the outer shapes of the first clamping block 201 and the second clamping block 202 can be set to be prismatic to match the cross section of the clamping hole 101. Setting the clamping blocks to be prismatic can better prevent the clamping blocks from rotating circumferentially within the clamping hole 101.

[0044] As shown Figure 5 in the figure, this embodiment also provides a CT examination bed, which includes a motor 20, a lead screw 30, a bed body 40, and a bed board (not shown in the figure), and also includes any one of the rod locking devices 10 in the foregoing solution. The motor 20 is installed on the bed body 40, the fixing block 1 of the rod locking device 10 is installed on the bed body 40, and the lead screw 30 passes through the mounting hole 102 of the fixing block 1 of the rod locking device 10 and is connected to the motor 20. The bed board is installed on the bed body 40 and is connected to the lead screw 30 (not shown in the figure). Among them, the motor 20 can drive the lead screw 30 to rotate, and then drive the bed board to move.

[0045] The fixing methods that the fixing block 1 of the rod locking device 10 can adopt on the bed body 40 include but are not limited to: screw fastening, snap fastening, magnetic attraction, welding, etc. Alternatively, a limiting groove can also be opened on the bed body 40, and the fixing block 1 is placed in the limiting groove to achieve a positioning effect.

[0046] In the existing CT examination bed, when the motor is in an unpowered state, the motor is disconnected from the lead screw, and the lead screw can rotate freely, which brings some inconvenience to the transportation or normal use of the CT examination bed. At the same time, it also increases the probability of damage during the transfer of the equipment and may reduce its service life. For the CT examination bed using the rod locking device of the present application, during the transportation of the CT examination bed, the lead screw 30 can be locked by using the rod locking device 10, that is, the first clamping block 201 and the second clamping block 202 are adjusted to approach each other through the connecting piece to clamp the lead screw 30, so as to ensure that the lead screw 30 will not rotate freely, and further ensure that the bed board of the CT examination bed will not move during transportation. For example, Figure 3 in the figure, the connecting piece shown adopts a screw 301, and the first clamping block 201 and the second clamping block 202 are made to approach each other by rotating the screw 301. When the transportation is completed, only the locking of the state where the first clamping block 201 and the second clamping block 202 approach each other needs to be released through the connecting piece. For example, as Figure 3 shown in the figure, the screw 301 is rotated in the reverse direction so that the first clamping block 201 and the second clamping block 202 can move away from each other, and in a preferred solution, a spring 302 can be added to push the first clamping block 201 and the second clamping block 202 apart. At this time, the lead screw 30 will be released and can rotate freely.

[0047] The above are only the preferred embodiments of the present application and are not used to limit the present application. For those skilled in the art, the present application can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A rod locking device, characterized in that, Comprising: A fixed block (1) having a clamping hole (101) and a mounting hole (102) provided in its body. The clamping hole (101) penetrates the fixed block (1) along a first direction, and the mounting hole (102) penetrates the fixed block (1) along a second direction. The first direction is perpendicular to the second direction. There is an intersection part between the clamping hole (101) and the mounting hole (102) inside the fixed block (1). A rod (6) is inserted into the mounting hole (102). A clamping block is provided in the clamping hole (101). The clamping block includes a first clamping block (201) and a second clamping block (202), which are respectively located on both sides of the intersection part of the clamping hole (101) and the mounting hole (102). A connecting member connects the first clamping block (201) and the second clamping block (202), and is used to adjust the first clamping block (201) and the second clamping block (202) to approach or move away from each other. Wherein, after the rod is inserted into the mounting hole (102), the first clamping block (201) and the second clamping block (202) approach each other to clamp the rod (6) at the intersection part of the clamping hole (101) and the mounting hole (102).

2. The rod locking device according to claim 1, characterized in that A through hole is provided along the body of the first clamping block (201), and a threaded hole is provided on the side of the second clamping block (202) facing the first clamping block (201). The connecting member includes a screw (301), and the screw (301) passes through the through hole of the first clamping block (201) and forms a threaded connection with the threaded hole of the second clamping block (202).

3. The rod locking device according to claim 2, characterized in that, The connecting member further includes a spring (302). The spring (302) is located between the first clamping block (201) and the second clamping block (202) and is sleeved on the screw (301). When the two clamping blocks clamp the rod (6), the spring (302) gives a force for the first clamping block (201) and the second clamping block (202) to move away from each other.

4. The rod locking device according to claim 1, characterized in that, The sides of the first clamping block (201) and the second clamping block (202) for abutting against the surface of the rod (6) are set as arc surfaces or inclined surfaces.

5. The rod locking device according to claim 1, characterized in that It further includes a limiter. The limiter includes a first limiter (401) for limiting the moving distance of the first clamping block (201) along the first direction in the clamping hole (101), and / or includes a second limiter (402) for limiting the moving distance of the second clamping block (202) along the first direction in the clamping hole (101).

6. The rod locking device according to claim 5, characterized in that, Taking the intersection part of the clamping hole (101) and the mounting hole (102) as a boundary, the clamping hole (101) is divided into a first clamping hole section and a second clamping hole section. The first clamping block (201) is located in the first clamping hole section, and the second clamping block (202) is located in the second clamping hole section. On the body of the fixed block (1), a first through hole (111) and a second through hole (112) are further provided. The first through hole (111) penetrates from the surface of the fixed block (1) into the first clamping hole section, and the second through hole (112) penetrates from the surface of the fixed block (1) into the second clamping hole section; On the outer wall of the first clamping block (201), a first limiting groove (501) extending a predetermined length in the first direction is provided. On the outer wall of the second clamping block (202), a second limiting groove (502) extending a predetermined length in the first direction is provided; The first limiter (401) is installed in the first through hole (111) and inserted into the first limiting groove (501), and the second limiter (402) is installed in the second through hole (112) and inserted into the second limiting groove (502); 7. The rod locking device according to claim 6, characterized in that, Internal threads are provided in both the first through hole (111) and the second through hole (112), and both the first limiter (401) and the second limiter (402) are set screws; 8. The rod locking device according to claim 5 or 6, characterized in that The cross-section of the clamping hole (101) is circular, and the outer shapes of the first clamping block (201) and the second clamping block (202) are cylindrical shapes adapted to the cross-section of the clamping hole (101); The first limiter (401) restricts the first clamping block (201) from circumferential rotation; the second limiter (402) restricts the second clamping block (202) from circumferential rotation; 9. The rod locking device according to claim 5 or 6, characterized in that, The cross-section of the clamping hole (101) is polygonal, and the outer shapes of the first clamping block (201) and the second clamping block (202) are prismatic shapes adapted to the cross-section of the clamping hole (101); 10. A CT examination table, characterized in that, It includes a motor (20), a lead screw (30), a bed body (40) and a bed plate, and further includes a rod locking device (10) according to any one of claims 1-9; The motor (20) is installed on the bed body (40), the fixed block (1) of the rod locking device (10) is installed on the upper surface of the bed body (40), and the lead screw (30) passes through the mounting hole (102) of the fixed block (1) of the rod locking device (10) and is connected to the motor (20). The bed plate is movably installed on the bed body (40) and connected to the lead screw (30).

Images