Chopping disc connecting structure and assembling tool thereof

By using a chopper plate connection structure and assembly tooling, the problem of chopper plate damage caused by centrifugal force at high speeds in neutron choppers has been solved, and stable operation of the chopper plate at high speeds has been achieved.

CN223928505UActive Publication Date: 2026-02-17TIANJIN SANTROLL ELECTRIC SCI & TECH
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Patent Information

Application Number
CN202520156523.9
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-01-22
Publication Date
2026-02-17
Estimated Expiration
2035-01-22

AI Technical Summary

Technical Problem

Existing neutron choppers cannot operate reliably at high speeds because centrifugal force causes local compressive stress on the chopper disk to exceed the material's limits, thus failing to meet the requirements for higher rotational speeds.

Method used

The chopper connection structure is adopted, including the chopper, the hub and the tolerance compensation ring. The tolerance compensation ring compensates for the gap and reduces vibration and prevents loosening. Combined with assembly tooling, it ensures accuracy and efficiency.

Benefits of technology

It improves the stability and durability of the chopper at high speeds, reduces vibration and shock, and ensures that the chopper can be used at higher speeds.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model relates to the technical field of hash neutron sources, in particular to a chopping plate connecting structure and an assembling tool thereof, and the chopping plate connecting structure comprises a chopping plate, a shaft hub and a tolerance compensation ring, a connecting hole is formed in the center of the chopping disc, a shaft hub is arranged in the connecting hole, and the shaft hub is used for being connected with a rotating shaft; a tolerance compensation ring is arranged between the outer wall of the shaft hub and the inner wall of the connecting hole and used for compensating a gap between the shaft hub and the connecting hole. According to the chopping disc connecting structure, the tolerance compensation ring is arranged, so that loosening between the chopping disc and the shaft hub at a high rotating speed can be prevented, vibration impact is reduced, and the chopping disc can be suitable for a higher rotating speed. The utility model further provides an assembly tool used when the chopping disc connecting structure is assembled, so that the assembly precision of the chopping disc connecting structure is ensured, and the assembly efficiency can also be ensured.
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Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of hash neutron source, specifically relates to a chopping disc connecting structure and assembly tooling. BACKGROUND

[0002] Spallation neutron source is through accelerator drive high energy proton bombarding heavy metal target, thereby getting high neutron flux neutron beam.

[0003] At present, the neutron chopper rotation speed used in domestic generally will not exceed 8000 revolutions per minute, the connection between its chopping disc and main shaft is mostly using flange connection or key connection conventional connection mode, can satisfy the requirement needed to reach its rotation speed, but with the research of neutron source to the pulse frequency better requirement, that is, need higher rotation speed chopper, above-mentioned connection mode will due to the centrifugal force of chopping disc under high speed state, the local chopping disc is extruded stress reaches or exceeds the limit of material, will lead to chopping disc damage, make it unable reliable operation. UTILITY MODEL CONTENTS

[0004] (I) the utility model provides a kind of chopping disc connecting structure and assembly tooling, alleviate the technical problem that chopping disc connecting structure cannot meet higher rotation speed demand in prior art.

[0005] (II) technical scheme

[0006] In order to solve the above technical problems, the embodiment of the utility model provides a kind of chopping disc connecting structure, including chopping disc, shaft hub and tolerance compensation ring;

[0007] The center of the chopping disc is provided with connecting hole, the shaft hub is arranged in the connecting hole, and the shaft hub is used for transmission connection;

[0008] The outer wall of the shaft hub and the inner wall of the connecting hole are provided with the tolerance compensation ring, and the tolerance compensation ring is used to compensate the gap between the shaft hub and the connecting hole.

[0009] Further, one end of the shaft hub is located in the connecting hole, the other end protrudes from the connecting hole, and the end of the shaft hub protruding from the connecting hole is connected with the hollow shaft.

[0010] Further, the hollow shaft is provided with a connecting disc, and the connecting disc is fixedly connected with the shaft hub.

[0011] Further, the connecting disc and the shaft hub are fixed by a fixing member.

[0012] Further, the connecting disc and the shaft hub are symmetrically provided with a plurality of fixing holes, and the fixing member is sequentially passed through the fixing holes to fix the connecting disc and the shaft hub.

[0013] The embodiment of the utility model provides a kind of assembly tool, for assembling the chopper plate connecting structure described above, including base, positioning mechanism, guide column and gland;

[0014] The guide column is provided on the base, the positioning mechanism is provided on the guide column, the connecting hole of the chopper plate is sleeved on the guide column, and the positioning mechanism is used for positioning, the tolerance compensation ring is sleeved in the outer side ring groove of the shaft hub, and the gland is used to press the shaft hub and the tolerance compensation ring into the connecting hole.

[0015] Further, the positioning mechanism includes a positioning piston, the positioning piston is sleeved on the guide column, and the positioning piston is used for positioning the connecting hole of the chopper plate.

[0016] Further, the positioning piston is provided with a groove, the groove faces the base, a spring is further sleeved on the outer side of the guide column, and the spring is located in the groove.

[0017] Further, the assembly tool further includes a guide sleeve, and the guide sleeve is sleeved on the outer side of the tolerance compensation ring.

[0018] Further, the gland is provided with a scale line.

[0019] The utility model has the advantages of:

[0020] The utility model provides a kind of chopper plate connecting structure, including chopper plate, shaft hub and tolerance compensation ring, the central position of chopper plate is equipped with connecting hole, shaft hub is installed in connecting hole inside, so that chopper plate can be connected with rotating shaft, and tolerance compensation ring is equipped between the outer wall of shaft hub and the inner wall of connecting hole, and the effect of shock absorption, anti-loose can be achieved by setting tolerance compensation ring, and tolerance compensation ring can also compensate the thermal expansion gap between different materials, that is, by setting tolerance compensation ring, it can prevent chopper plate and shaft hub from being loose at high speed, reduce vibration impact, so that chopper plate can be suitable for higher speed.

[0021] The utility model further provides a kind of assembly tool, including base, positioning mechanism, guide column and gland, guide column is provided on base, positioning mechanism is further provided on guide column, and chopper plate is positioned by positioning mechanism and is sleeved on guide column, and the assembly of shaft hub and tolerance compensation ring that are sleeved in the ring groove of the outer side of shaft hub is completed by using gland and being pressed into the connecting hole of chopper plate, so as to ensure the assembly precision of chopper plate connecting structure, and assembly efficiency can be guaranteed. BRIEF DESCRIPTION OF DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the specific embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the description of the specific embodiments or the prior art. Obviously, the drawings described below are some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative labor on the basis of these drawings.

[0023] Figure 1 A structural schematic view of a chopper plate connecting structure provided for the embodiments of the present application is shown in the figure.

[0024] Figure 2 An assembly schematic view of an assembly tool of a chopper plate connecting structure provided for the embodiments of the present application is shown in the figure.

[0025] Icon:

[0026] 100-chopper plate; 101-shaft hub; 102-tolerance compensation ring; 103-hollow shaft; 104-connecting plate; 105-fixing member;

[0027] 200-base; 201-guiding column; 202-pressing cover; 203-positioning piston; 204-spring; 205-guiding sleeve. Specific embodiments

[0028] The technical solutions of the present application will be described clearly and completely in combination with the embodiments. Obviously, the described embodiments are some embodiments of the present application, but not all the embodiments. Based on the embodiments in the present application, all the other embodiments obtained by those skilled in the art without creative labor are within the protection scope of the present application.

[0029] In the description of the present application, it should be noted that the directions or position relationships indicated by the terms "upper", "lower" and the like are based on the directions or position relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0030] In the description of the utility model, it is necessary to explain, unless another explicit provision and limitation, term "installation", "communication", "connection" should do broad sense understanding, for example, can be fixed connection, also can be detachable connection, or integrally connected;Can be mechanical connection, also can be electrical connection;Can be direct communication, also can be indirectly communicated through intermediate medium, can be two elements inside communication.For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to specific circumstances.In addition, in the description of the utility model, unless otherwise stated, the meaning of "multiple" is two or more than two.

[0031] As Figure 1 The utility model provides a chopper disc connecting structure, including chopper disc 100, shaft hub 101 and tolerance compensation ring 102, the center of chopper disc 100 is equipped with connecting hole, and the connecting hole is equipped with shaft hub 101, and shaft hub 101 is used for transmission connection;Tolerance compensation ring 102 is arranged between the outer wall of shaft hub 101 and the inner wall of connecting hole, and is used for compensating the gap between shaft hub 101 and connecting hole.

[0032] In the embodiment, the chopper disc connecting structure includes chopper disc 100, shaft hub 101 and tolerance compensation ring 102, the center position of chopper disc 100 is equipped with connecting hole, and shaft hub 101 is installed inside the connecting hole, so that chopper disc 100 can be connected with the rotating shaft, and tolerance compensation ring 102 is arranged between the outer wall of shaft hub 101 and the inner wall of connecting hole, and the tolerance compensation ring 102 can reduce vibration and prevent loosening, and the tolerance compensation ring 102 can also compensate the thermal expansion gap between different materials, that is, the tolerance compensation ring 102 can prevent chopper disc 100 and shaft hub 101 from loosening at high speed, reduce vibration impact, and make chopper disc 100 applicable to higher speed.

[0033] According to one embodiment of the utility model, as Figure 1 The one end of shaft hub 101 is located in the connecting hole, and the other end protrudes from the connecting hole, and the end of shaft hub 101 protruding from the connecting hole is connected with hollow shaft 103.

[0034] In the embodiment, shaft hub 101 is arranged in the connecting hole, and the end of shaft hub 101 protruding from the connecting hole is connected with hollow shaft 103, so as to be connected with the rotating shaft.

[0035] Preferably, the chopper plate 100 and the hollow shaft 103 are made of T700 carbon fiber impregnated epoxy resin material, the chopper plate 100 is made by cross-laminated manner, and the hollow shaft 103 is made by cross-wound manner and is hollow, so that the strength is improved and the weight is reduced, the resonance frequency is improved, the vibration during operation is reduced, and the chopper plate 100 is more suitable for higher rotating speed.

[0036] According to one embodiment of the utility model, as shown in Figure 1 The connecting disc 104 is fixedly connected with the shaft hub 101.

[0037] Further, the connecting disc 104 and the shaft hub 101 are fixed by the fixing member 105.

[0038] In the embodiment, the connecting disc 104 is arranged in the hollow shaft 103, the end surface of the connecting disc 104 and the hollow shaft 103 need to be parallel to each other, the hollow shaft 103 is connected with the shaft hub 101 through the connecting disc 104, and the connecting disc 104 and the hollow shaft 103 are fixed by interference fit, so that the connecting strength between the hollow shaft 103 and the shaft hub 101 is ensured.

[0039] The shaft hub 101 in the connecting hole of the chopper plate 100 is connected with the hollow shaft 103 through the connecting disc 104, and then the hollow shaft 103 is connected with the remaining connecting components of the chopper, so that the rotor unit of the chopper is formed.

[0040] According to one embodiment of the utility model, as shown in Figure 1 The connecting disc 104 and the shaft hub 101 are symmetrically provided with a plurality of fixing holes, and the fixing member 105 is sequentially inserted into the fixing holes to fix the connecting disc 104 and the shaft hub 101.

[0041] In the embodiment, preferably, six threaded holes and two pin holes are symmetrically arranged in the connecting disc 104 and the shaft hub respectively, and the threaded holes and the pin holes are sequentially fixed by using screws and pins.

[0042] In order to prevent the screws from loosening due to rotation during connection, the threads of the screws are coated with thread locking glue.

[0043] As shown in Figure 2As shown, this utility model also provides an assembly fixture for assembling the above-mentioned chopper disk connection structure, including a base 200, a positioning mechanism, a guide post 201, and a pressure cap 202; the guide post 201 is disposed on the base 200, the positioning mechanism is disposed on the guide post 201, the connection hole of the chopper disk 100 is sleeved on the guide post 201, and is positioned by the positioning mechanism, the tolerance compensation ring 102 is sleeved in the outer annular groove of the hub 101, and the pressure cap 202 is used to press the hub 101 and the tolerance compensation ring 102 into the connection hole.

[0044] In this embodiment, the assembly fixture includes a base 200, a positioning mechanism, a guide post 201, and a pressure cap 202. The guide post 201 is provided on the base 200, and the positioning mechanism is also provided on the guide post 201. The positioning mechanism can position the chopper disk 100 sleeved on the guide post 201. Then, the pressure cap 202 is used to press the hub 101 and the tolerance compensation ring 102 sleeved in the outer annular groove of the hub 101 into the connection hole of the chopper disk 100 to complete the assembly. This ensures the assembly accuracy of the chopper disk connection structure and also guarantees the assembly efficiency.

[0045] Preferably, when using the pressure cap 202 for press-fitting assembly, a special press-fitting equipment is used for press-fitting, which is common knowledge in the field and will not be described in detail here.

[0046] According to one embodiment provided by this utility model, such as Figure 2 As shown, the positioning mechanism includes a positioning piston 203, which is sleeved on the guide post 201. The positioning piston 203 is used to position the connection hole of the chopper 100.

[0047] In this embodiment, the positioning mechanism includes a positioning piston 203, which is sleeved on the guide post 201 and located at the bottom of the guide seat. That is, the bottom surface of the positioning piston 203 is in contact with the base 200. After the chopper disk 100 is sleeved on the guide post 201, the connecting hole of the chopper disk 100 can be positioned by the positioning piston 203. Then, the hub 101 is sleeved on the guide post 201 with its own inner hole as a reference, thereby ensuring the coaxiality of the hub 101 and the chopper disk 100, and thus ensuring the installation accuracy.

[0048] According to one embodiment provided by this utility model, such as Figure 2 As shown, the positioning piston 203 has a groove facing the base 200, and a spring 204 is also sleeved on the outside of the guide post 201, with the spring 204 located inside the groove.

[0049] In this embodiment, the positioning piston 203 is also provided with a groove facing the base 200. At the same time, a spring 204 is also sleeved on the outside of the guide post 201. After the spring 204 is sleeved, it is located in the groove. Before pressing, it can ensure the positioning accuracy. After pressing, the positioning piston 203 is pressed down, which can ensure that the hub 101 is pressed into place. After removal, the positioning piston 203 can also be reset by the spring 204, so as to facilitate reuse and improve assembly efficiency.

[0050] According to one embodiment provided by this utility model, such as Figure 2 As shown, the assembly fixture also includes a guide sleeve 205, which is fitted on the outside of the tolerance compensation ring 102.

[0051] In this embodiment, the assembly fixture also includes a guide sleeve 205. During assembly, the tolerance compensation ring 102 is first fitted into the annular groove on the outside of the hub 101, and then the guide sleeve 205 is fitted onto the outside of the tolerance compensation ring 102, ensuring that the guide sleeve 205 is flush with the end face of the hub 101. After the hub 101 is fitted onto the guide post 201, it is necessary to ensure that the lower end face of the guide sleeve 205 is in contact with the chopper disk 100. Finally, the pressure cap 202 is pressed onto the hub 101 for press fitting, applying pressure until the lower end face of the hub 101 is flush with the lower end face of the chopper disk 100, thus completing the assembly process.

[0052] According to one embodiment provided by this utility model, such as Figure 2 As shown, the pressure cap 202 has scale lines.

[0053] In this embodiment, a scale line is provided on the pressure cap 202. By observing the scale line, the assembly staff can easily observe whether the pressure cap is in place.

[0054] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A chopper plate connecting structure characterized by comprising: The chopper plate (100), the shaft hub (101) and the tolerance compensation ring (102) are included. The shaft hub (101) is arranged in the connecting hole of the chopper plate (100). The tolerance compensation ring (102) is arranged between the outer wall of the shaft hub (101) and the inner wall of the connecting hole.

2. The chopper plate connection structure according to claim 1, characterized by One end of the shaft hub (101) is arranged in the connecting hole, and the other end of the shaft hub (101) protrudes from the connecting hole.

3. The chopper plate connection structure according to claim 2, characterized by The hollow shaft (103) is arranged in the connecting plate (104).

4. The chopper plate connection structure according to claim 3, characterized by The connecting plate (104) and the shaft hub (101) are fixed by the fixing member (105).

5. The chopper plate connection structure according to claim 4, characterized by The connecting plate (104) and the shaft hub (101) are symmetrically provided with a plurality of fixing holes.

6. An assembly tool for assembling the chopper blade connection structure according to any one of claims 1 to 5, characterized in that, The base (200), the positioning mechanism, the guide column (201) and the gland (202) are included. The guide column (201) is arranged in the base (200), and the positioning mechanism is arranged in the guide column (201).

7. The assembly tool of claim 6, wherein, The connecting hole of the chopper plate (100) is sleeved on the guide column (201), and the tolerance compensation ring (102) is sleeved in the outer ring groove of the shaft hub (101).

8. The assembly tool of claim 7, wherein, The positioning mechanism includes a positioning piston (203) sleeved on the guide column (201).

9. The assembly tool of claim 6, wherein, The positioning piston (203) is arranged in the recess, and the recess faces the base (200).

10. The assembly tool of claim 6, wherein, The guide sleeve (205) is arranged outside the tolerance compensation ring (102). The gland (202) is provided with a scale line. The chopper plate (100), the shaft hub (101) and the tolerance compensation ring (102) are included. The shaft hub (101) is arranged in the connecting hole of the chopper plate (100). The tolerance compensation ring (102) is arranged between the outer wall of the shaft hub (101) and the inner wall of the connecting hole. One end of the shaft hub (101) is arranged in the connecting hole, and the other end of the shaft hub (101) protrudes from the connecting hole. The hollow shaft (103) is arranged in the connecting plate (104). The connecting plate (104) and the shaft hub (101) are fixed by the fixing member (105). The connecting plate (104) and the shaft hub (101) are symmetrically provided with a plurality of fixing holes. The base (200), the positioning mechanism, the guide column (201) and the gland (202) are included. The guide column (201) is arranged in the base (200), and the positioning mechanism is arranged in the guide column (201). The connecting hole of the chopper plate (100) is sleeved on the guide column (201), and the tolerance compensation ring (102) is sleeved in the outer ring groove of the shaft hub (101). The positioning mechanism includes a positioning piston (203) sleeved on the guide column (201). The positioning piston (203) is arranged in the recess, and the recess faces the base (200). The guide sleeve (205) is arranged outside the tolerance compensation ring (102). The gland (202) is provided with a scale line.