A CT tube target plate locking protection device

Abstract

The present application relates to a CT tube target plate locking protection device, including a target plate assembly, a protective cover, and a base. The protective cover is mounted on the target plate assembly, and is characterized in that a locking block, a locking ring, and an elastic support assembly are also provided. The locking block conical hole cooperates with the outer conical surface of the locking screw. The locking block is placed on the locking ring pit and is slidably connected. The two sides of the locking block cooperate with the edges of the locking ring pit. The locking block cooperates with the target plate through the arc surface. The target plate is fixed on the locking ring through the target plate limit screw. An elastic support assembly is provided between the bottom of the target plate assembly and the base to support the target plate assembly. The locking ring is provided with a locking screw hole, and the lowest position of the locking screw hole is lower than the lowest position of the locking screw. The locking ring is made of elastic material or has an elastic structure, so that when the locking ring moves outward and presses the base, it will not be damaged. The elastic structure of the locking ring is a plurality of uniformly distributed grooves uniformly distributed along the inner circumference of the locking ring. The present application has a simple structure, is easy to use, is reliably fixed, and is not easy to damage the target plate assembly.

Description

Technical Field

[0001] The present application relates to a CT tube target plate locking protection device, which is mainly used for fixing and protecting the target plate assembly during the target plate deweighting process (an operation in which the target plate is adjusted to be uniformly balanced and the moment of inertia is as small as possible). Background Art

[0002] The tooling used in the prior art only has the function of circumferential positioning of the target plate, but no function of clamping the target plate. The problem with this approach is that the target plate cannot be reliably fixed, resulting in large vibrations in the parts, machine tools and tooling during the deweighting process, which damages the graphite surface of the target plate. In addition, the lack of a support device at the bottom of the tooling makes it inconvenient to take the target plate assembly when disassembling it. Summary of the invention

[0003] The technical problem solved by the present application is to overcome the above-mentioned deficiencies in the prior art and to provide a CT tube target plate locking protection device with a simple structure, easy use and reliable fixation.

[0004] The technical solution adopted by this application to solve the above technical problems is:

[0005] A CT tube target plate locking protection device comprises a target plate assembly, a protective cover, and a base. The protective cover is mounted on the target plate assembly. The device is characterized in that a locking block, a locking ring, and an elastic support assembly are also provided. The locking block conical hole cooperates with the outer conical surface of the locking screw. The locking block is placed on a locking ring pit and is slidably connected. The two side edges of the locking block cooperate with the edges of the locking ring pit. The locking block cooperates with the target plate through an arc surface. The target plate is fixed to the locking ring through a target plate limit screw. An elastic support assembly is provided between the bottom of the target plate assembly and the base to support the target plate assembly. The locking ring is provided with a locking screw hole. The lowest position of the locking screw hole is lower than the lowest position of the locking screw.

[0006] The locking ring described in the present application is made of an elastic material or has an elastic structure, so that the locking ring will not be damaged when it moves outward and presses the base.

[0007] In the initial state of the present application, there is a gap between the outer side of the outer cone surface of the locking screw and the locking block. When the locking screw is tightened so that the locking block presses the target plate, there is a smaller gap between the outer side of the outer cone surface of the locking screw and the locking block compared to the initial state. When the locking screw continues to be tightened, the outer circle part of the locking ring radially facing the locking screw presses against the corresponding part of the base, so that the locking ring presses against the base and is fixed reliably.

[0008] The elastic structure of the locking ring is a plurality of evenly distributed grooves along the inner circumference of the locking ring, so that the inner side is not restricted and will not be damaged when the locking ring is supported outward.

[0009] The elastic support assembly consists of a spring top ring, a spring, and a spring fixing seat. The spring top ring contacts the target plate assembly, the spring fixing seat is installed on the base, and the spring is arranged between the spring top ring and the spring fixing seat and supports the spring top ring.

[0010] The present application also provides a dust plug, which is inserted into the inner hole of the copper sleeve and fits with the upper surface of the target plate.

[0011] The present application also provides a dividing plate, which is fixed to the base, and the 0 degree position of the dividing plate corresponds to the cursor observation hole on the base.

[0012] Compared with the prior art, the present application has the following advantages and effects: simple structure, easy use, reliable fixation, and solves the problem that the target plate cannot be locked during the deweighting process, resulting in severe vibration of parts, machine tools and tooling during the deweighting process, damaging the graphite surface of the target plate, and inconvenient removal of the target plate assembly during disassembly and assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is an exploded schematic diagram of an embodiment of the present application.

[0014] Figure 2 It is a schematic top view of an embodiment of the present application.

[0015] Figure 3 yes Figure 2 AA cross-sectional view of .

[0016] Figure 4 It is a schematic diagram of the initial state of the locking block, target plate, locking ring, locking screw and base in the embodiment of the present application.

[0017] Figure 5 This is a schematic diagram of the state in which the locking block of the embodiment of the present application is against the target plate. At this time, the locking ring corresponding to the locking screw portion is about to start moving outward to support the base when the locking screw is further tightened.

[0018] Figure 6 It is a schematic diagram of the locking state of the locking block of the embodiment of the application, with the target plate supported inside and the locking ring supporting the base outside. DETAILED DESCRIPTION

[0019] The following is a further detailed description of the present application in conjunction with the accompanying drawings and examples. The following examples are explanations of the present application and the present application is not limited to the following examples. The inside, outside, top, and bottom mentioned in the present application are relative to Figure 3 Speaking of.

[0020] See also Figure 1 to Figure 6 , this embodiment includes:

[0021] 1- Dust plug, the dust plug 1 is directly inserted into the inner hole of the copper sleeve 22 (the part connected to the target plate 21) and fits with the upper surface of the target plate 21 to prevent iron filings from flying into the copper sleeve 22 during the deweighting process.

[0022] 2-target assembly, including target 21, copper sleeve 22, bearing assembly 23, the metal lower surface of target assembly 2 is placed on the protrusion 53 of the locking block 5, the outer surface is supported and locked by the locking block 5, and the upper surface is pressed and limited by the target limit screw 3.

[0023] 3-Target plate limit screw

[0024] After the target plate 21 is installed in the locking ring 6, the target plate limiting screw 3 is screwed into the corresponding hole of the locking ring 6, and the plane of the target plate limiting screw 3 is directly pressed on the surface of the target plate 21 to ensure that the target plate 21 will not tilt during the process of locking the target plate 21.

[0025] 4-Locking screw

[0026] The outer conical surface 41 of the locking screw 4 cooperates with the conical hole 54 of the locking block 5. When the locking screw 4 is screwed downward into the locking ring 6, the inward component force on the outer conical surface 41 pushes the locking block 5 inward, thereby locking the target plate 21.

[0027] 5-Locking block

[0028] The conical hole 54 of the locking block 5 matches the inner side of the outer conical surface 41 of the locking screw 4, the bottom surface contacts the surface of the recess 62 of the locking ring 6, and the sides 52 (referring to the two sides along the radial direction of the target plate 21) match the sides of the recess 62 of the locking ring 6 to ensure that it always moves along the radial direction of the target plate 21. The contact position between the locking block 5 and the target plate 21 is the matching arc surface 51 of the locking block 5 to ensure uniform force during locking. The lower part of the locking block 5 has a circular arc-shaped protrusion 53 (i.e., the lower part of the arc surface 51), which can play a role in limiting and supporting the target plate 21 from below during locking. The locking block 5 is in the initial state (see Figure 4 At this time, the locking ring 6 is in a normal non-deformed state, and the locking block 5 corresponding to the locking screw hole 64) moves inward by a distance generally between 0.25 and 0.75 mm.

[0029] 6-Locking ring

[0030] The function of the locking ring 6 is to provide support for the locking screw 4 and to support the base 8 after the locking screw 4 pushes the locking block 5 into place. Figure 4 In the initial state, the inner side of the outer conical surface 41 of the locking screw 4 is matched with or nearly close to the locking block conical hole 54, and there is a gap 55 between the outer side of the outer conical surface 41 of the locking screw 4 and the locking block 5. Figure 5When the locking screw 4 is screwed downward, the downward pressure F1 will generate an inward force component F2 and a force component along the inclined surface. Under the action of the inward force component F2, the locking block 5 is pushed inward until it contacts the outer circle of the target plate 21. When the locking block 5 and the target plate 21 are completely in contact, there is still a gap 55 between the outer side of the outer cone 41 of the locking screw 4 and the locking block 5, but the gap 55 is reduced relative to the initial state. Because the locking ring 6 is provided with a locking screw hole 64 and the lowest position of the locking screw hole 64 is at a distance from the lowest position of the locking screw 4 (the locking screw 4 will not support the locking screw hole 64 before the locking ring 6 is completed to support the base 8, or the locking screw 4 will not touch the base 8 when the locking screw hole 64 is a through hole, see Figure 6 ), the locking screw 4 can still move downward, that is, the downward force F1 still exists, but the locking block 5 can no longer move inward, and the inner side of the outer conical surface 41 of the locking screw 4 is limited by the conical hole 54 of the locking block and must move downward and outward. Therefore, under the action of the reaction force F3 of F2, the portion 65 of the locking ring 6 located radially outside the locking screw 4 is gradually stretched open by the outward force F3 on the outer side of the thread of the locking screw 4, and the outer circumferential portion of the locking ring 6 radially facing the locking screw 4 supports the corresponding portion 83 of the base 8, so that the locking ring 6 is fixed reliably.

[0031] Since the locking ring 6 may be damaged when it is stretched outward, as a technical means to solve this technical problem, the present application has several (six in particular) uniformly distributed grooves 63 on the inner side of the locking ring 6, which are evenly distributed along the circumference of the locking ring 6. When the locking ring 6 is stretched outward, due to the effect of the uniformly distributed grooves 63, the inner side of the locking ring 6 is allowed to be stretched and deformed to a large extent, and the part between the two adjacent locking screws 4 on the outer side of the locking ring 6 changes from an arc shape to a straight line, thereby allowing a part of the locking ring 6 (mainly the radial corresponding part of the locking screw 4, and other parts, especially the middle part between the two adjacent locking screws 4, may still shrink inward) to move outward to support the base 8, and fix it reliably. The maximum outward movement distance of the locking ring 6 corresponding to the locking screw 4 is generally between 0.1 and 0.5 mm.

[0032] 7-Protective cover

[0033] The protective sleeve 7 is installed in the inner hole of the base 8. The inner hole of the protective sleeve 7 is slightly larger than the outer diameter of the copper sleeve 22, so that the surface of the copper sleeve 22 is not scratched when the target plate assembly 2 is installed in the tooling.

[0034] 8-Base

[0035] The locking ring step 81 of the base 8 is used to support the locking ring 6. The inner hole connected to the locking ring 6 is tightened with the outer circle of the locking ring 6 to form a whole when in use, so as to prevent the tooling and parts from vibrating during the deweighting process. The middle inner hole of the base 8 is used to install the protective cover 7. There is a cursor observation hole 82 at the position corresponding to 0 degrees of the base 8 and the dividing plate 13, which is used to calibrate the angle of the target plate assembly 2 during deweighting. The bottom of the base 8 is connected to the spring fixing seat 11 and the dividing plate 13 respectively.

[0036] 9-Spring top ring

[0037] The upper surface of the spring top ring 9 contacts the lower surface of the bearing assembly 23 , and the lower surface contacts the upper surface of the spring 10 .

[0038] 10- Spring

[0039] The upper and lower surfaces of the spring 10 are in contact with the spring top ring 9 and the spring fixing seat 11 respectively, and support the pop-up target plate assembly 2 during disassembly.

[0040] 11- Spring fixing seat

[0041] The inner step of the spring fixing seat 11 is used to install the spring 10, and the outer step is in contact with the base 8 and assembled together by screws.

[0042] 12- Spring fixing seat fixing screw

[0043] The spring fixing seat fixing screw 12 is used to assemble the spring fixing seat 11 and the base 8 together.

[0044] 13- Indexing plate

[0045] The dividing plate 13 is assembled with the lower part of the base 8, and the 0 degree position corresponds to the cursor observation hole 82 on the base 8, which is used to determine the deweighting angle during deweighting.

[0046] 14- Indexing plate fixing screw

[0047] The indexing plate fixing screws 14 are used to assemble the indexing plate 13 and the base 8 together.

[0048] This application installation process:

[0049] 1. The protective sleeve 7, the base 8, the spring top ring 9, the spring 10, the spring fixing seat 11, and the indexing plate 13 are fixedly assembled into a base assembly, wherein the protective sleeve 7 can prevent the target plate assembly 2 from scratching the surface of the copper sleeve 22 when it is placed in the tooling; the spring top ring 9, the spring 10, and the spring fixing seat 11 can support the target plate assembly 2 to prevent the target plate 21 from being deformed due to unilateral force when it is locked; the scale on the indexing plate 13 allows the operator to accurately find the deweighting angle, and its zero position is opposite to the cursor position on the copper sleeve 22;

[0050] 2. Install the target plate assembly 2 into the tooling. Due to the support of the spring force, the graphite surface of the target plate 21 will not contact the tooling;

[0051] 3. Assemble the target plate limit screw 3, locking screw 4, locking block 5 and locking ring 6 into a locking ring assembly;

[0052] 4. Move the locking block 5 to the outermost side;

[0053] 5. Insert the locking ring assembly into the target plate assembly 2 from above;

[0054] 6. Lock the locking block 5 symmetrically. While the locking block 5 locks the outer circle of the target plate inward, the locking ring 6 is stretched outward to support the inner hole of the base 8. This ensures that the target plate assembly 2, the locking ring assembly and the base 8 are reliably combined into a whole, ensuring the rigidity of the three during weight removal;

[0055] 7. Put the dust plug 1 into the target plate assembly 2 and plug it in tightly. The dust plug 1 can effectively prevent iron filings from flying into the inner hole;

[0056] 8. Start deduplication.

[0057] Any simple deformation or combination of the technical features and technical solutions of this application should be considered to fall within the protection scope of this application.

Claims

1. A CT tube target plate locking protection device, comprising a target plate assembly, a protective cover, and a base, wherein the protective cover is sleeved on the target plate assembly, and is characterized in that: A locking block, a locking ring, and an elastic supporting assembly are also provided. The conical hole of the locking block cooperates with the outer conical surface of the locking screw. The locking block is placed on the locking ring pit and is slidably connected along the radial direction of the target disk. The two side edges of the locking block cooperate with the edges of the locking ring pit. The locking block cooperates with the target disk through the arc surface. The target disk is fixed to the locking ring through the target disk limit screw. An elastic supporting assembly is arranged between the bottom of the target disk assembly and the base to support the target disk assembly. The locking ring is provided with a locking screw hole. The lowest position of the locking screw hole is lower than the lowest position of the locking screw. In the initial state, there is a gap between the outer side of the outer conical surface of the locking screw and the locking block. When the locking screw is tightened downward, the locking block is pushed inward until it contacts the outer circle of the target plate; when the locking block and the target plate are completely in contact, there is still a gap between the outer side of the outer conical surface of the locking screw and the locking block, but the gap is smaller than the initial state; when the locking screw continues to be tightened, the inner side of the outer conical surface of the locking screw must move downward and outward due to the limitation of the tapered hole of the locking block, and the part of the locking ring located radially outside the locking screw is gradually stretched out by the outward force applied to it by the outer side of the locking screw thread, and the outer circle part of the locking ring radially facing the locking screw presses against the corresponding part of the base, so that the locking ring is fixed.

2. The CT tube target plate locking protection device according to claim 1 is characterized in that: The locking ring is made of elastic material or has an elastic structure.

3. The CT tube target plate locking protection device according to claim 2 is characterized in that: The elastic structure of the locking ring is a plurality of evenly distributed grooves which are evenly distributed along the inner circumference of the locking ring.

4. The CT tube target plate locking protection device according to claim 1 or 2, characterized in that: The elastic support assembly consists of a spring top ring, a spring, and a spring fixing seat. The spring top ring contacts the target plate assembly, the spring fixing seat is installed on the base, and the spring is arranged between the spring top ring and the spring fixing seat and supports the spring top ring.

5. The CT tube target plate locking protection device according to claim 1 or 2, characterized in that: A dust plug is also provided, which is inserted into the inner hole of the copper sleeve and fits with the upper surface of the target plate.

6. The CT tube target plate locking protection device according to claim 1 or 2, characterized in that: A dividing plate is also provided, which is fixed to the base, and the 0 degree position of the dividing plate corresponds to the cursor observation hole on the base.

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