Grillwork spring clamping force detection head

Abstract

The utility model relates to a grillage spring clamping force detection head in the field of detection heads, which comprises a mounting seat, the side surface of the mounting seat is connected with a detection shell, a mounting cavity is formed in the detection shell, a pressure sensor used for detecting the grillage spring clamping force is connected in the mounting cavity, and the pressure sensor is connected with the detection shell. An avoiding opening communicated with the mounting cavity is formed in one side of the detection shell, an expansion block expanding or contracting along the avoiding opening is connected into the mounting cavity, a through movable groove is formed in the expansion block, the expansion block is connected with a movable stress rod through the movable groove, a driving part is arranged on the mounting seat, and the driving part is connected with the detection shell. According to the utility model, the expansion block can be opened or closed towards the avoiding opening, plugging and unplugging in the use process are reduced under the closing of the expansion block, and the pressure sensor in the opposite direction is stressed to obtain the clamping force value of the grillwork while the expansion block is displaced to be opened and is in contact with a product to be detected, so that the stability and reliability of detection are ensured; and the service life is prolonged.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of detection head, concretely relates to grid spring clamping force detection head. BACKGROUND

[0002] Grid spring plays a crucial role in the field of nuclear power technology. As a component of nuclear fuel assembly, its main function is to support and position the nuclear fuel rods. The grid holds and limits the fuel rods through the built-in spring components, ensuring that the fuel rods can be stably placed in the grid, thereby maintaining the overall structure and function of the nuclear fuel assembly. In particular, in the pressurized water reactor fuel assembly, the importance of grid spring is particularly prominent, such as AFA3G grid, which contains a large number of spring grid elements to ensure the stability and safety of the fuel rods in the reactor. Therefore, after the grid is manufactured, it is necessary to detect whether the clamping force of the spring component can meet the requirements of support and positioning in application.

[0003] In the prior art, the detection of grid spring is mainly carried out by manual method, which has many defects. First of all, the efficiency of manual detection is low, which cannot meet the needs of large-scale production. Secondly, due to the error of manual operation, the accuracy of the detection result cannot be guaranteed. At present, there are some grid spring detection mechanisms or devices on the market, which generally include detection head, sensor, driving mechanism and other parts. Among them, the detection head is a component for directly clamping and detecting the clamping force of the grid spring, and the sensor is used to convert the detected force value into an electrical signal for output. The driving mechanism is used to control the movement and positioning of the detection head in order to detect different grid springs.

[0004] However, the existing grid spring detection mechanism or device still has some significant defects. First of all, due to the unreasonable structure design of the detection head, the clamping part of some detection heads may be loose or worn out after a long time of friction, resulting in insufficient accuracy and stability of the clamping force detection. In addition, the existing detection mechanism usually needs to be pulled out and inserted, which makes the detection accuracy gradually decrease and affects the service life of the detection mechanism during long-term use. Furthermore, the overall structure of some detection mechanisms is complex, which leads to a larger volume of the detection mechanism, thereby affecting the accuracy and reliability of the detection. UTILITY MODEL CONTENTS

[0005] The utility model aims to solve the above defects and provide a grid spring clamping force detection head to solve the technical problems of the overall structure and volume of the existing detection mechanism being relatively complex, and the detection accuracy of the existing detection mechanism being poor, thereby affecting the accuracy and reliability of the detection.

[0006] The utility model is achieved by the following way:

[0007] The lattice spring clamping force detection head comprises a mounting seat, the side of the mounting seat is connected with a detection shell, the inside of the detection shell is formed with a mounting cavity, a pressure sensor for detecting the clamping force of the lattice spring is connected in the mounting cavity, the side of the detection shell is provided with a detection port in communication with the mounting cavity, the detection end of the pressure sensor is exposed to the detection port, the side of the detection shell is provided with an avoiding port in communication with the mounting cavity, an expansion block that expands or shrinks along the avoiding port is connected in the mounting cavity, the expansion block is formed with a through movable groove, the side of the expansion block close to the pressure sensor is formed with an opening in communication with the movable groove, the expansion block is connected with a movable force receiving rod through the movable groove, the mounting seat is provided with a driving member, the telescopic end of the driving member extends to the movable groove and is connected with one end of the force receiving rod, the driving member can drive the force receiving rod to move along the movable groove, so that the force receiving rod can drive the expansion block to move to the avoiding port.

[0008] Further in the above description, the side of the force receiving rod close to the pressure sensor is provided with an avoiding groove.

[0009] Further in the above description, the expansion block is provided with a guide groove, the guide direction of the guide groove extends to the pressure sensor in an inclined manner, and the force receiving rod is provided with a guide column that is connected with the guide groove in a matched manner.

[0010] Through the guide groove, the force receiving rod can move to the pressure sensor and press the expansion block to move to the avoiding port under the driving of the driving member, at the same time, the pressure sensor receives force in the opposite direction, so that the clamping force value of the lattice spring can be obtained.

[0011] Further in the above description, the detection shell is provided with a mounting hole connected with the expansion block, and the expansion block is provided with a connecting groove matched with the mounting hole.

[0012] Through the connecting groove on the expansion block matched with the mounting hole of the detection shell, the expansion block can move to the avoiding port under the extrusion of the force receiving rod, so that the expansion block forms the expansion and contraction action, and the convenience and use effect of the connection are improved.

[0013] Further in the above description, the detection shell is provided with a connecting block, the detection shell is formed with a mounting groove, the connecting block is provided with a protrusion inserted and matched with the mounting groove, and the connecting block is provided with a through hole in communication with the movable groove.

[0014] Through the through hole on the connecting block in communication with the movable groove, one end of the force receiving rod extends to the movable groove through the through hole, the through hole ensures the movement direction of the force receiving rod, improves the stability and reliability of the movement of the force receiving rod, and further improves the accurate movement of the force receiving rod.

[0015] Specific, through the force bar connected guide post along the guide slot of the expansion block movement to produce extrusion, reduce the use of detection end of the laborious dial plug, and reduce the use of the process of friction with the measured product long time affected the service life of the phenomenon.

[0016] Further in the above description, the driving member is made of driving cylinder, driving cylinder through the push rod and the force bar one end of the connection.

[0017] Further in the above description, the detection housing is provided with a connecting hole for connecting pressure sensor, one end of the pressure sensor and the connecting hole are connected, and the detection end of the pressure sensor is exposed to the detection port, and the side of the mounting seat is connected with a fixing member.

[0018] When the force bar moves along the active slot through the driving member, the guide post can extrude the expansion block to move to the avoidance port, so that the expansion block is extruded outward within the limited displacement while receiving the force of the pressure sensor in the opposite direction, so that the clamping force of the grid spring can be obtained, and the convenience and stability of the test are improved.

[0019] The utility model discloses the active slot on the expansion block realizes the flexible guide and limit of force bar, guarantees the stable movement of force bar under the action of driving member, and the driving member can drive force bar to carry out telescopic motion along the active slot, so that the expansion block can be extruded to open or close to the avoidance port, the force bar is the key component of connecting driving member, can accurately transmit the driving force of driving member to the expansion block, so that the expansion block can form the expansion and contraction action, and the expansion block is built in the installation cavity through the contraction, further reduces the volume, so that the plug -in assembly is matched to the external grid conveniently, the expansion block reduces the plug -in of use process, and reduces the friction plug -in contact with the measured product, and the expansion block can be displaced to the avoidance port and contact the measured product when needing detection, and the force of the pressure sensor in the opposite direction is received, so that the clamping force value of the grid is obtained, the stability and reliability of the detection head in use are ensured, and the precision and service life of the detection device are improved. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 It is the whole structure schematic diagram of front view angle of this embodiment;

[0021] Figure 2 It is the whole structure schematic diagram of side view angle of this embodiment;

[0022] Figure 3 It is the explosion structure schematic diagram of the first direction of this embodiment;

[0023] Figure 4 It is the explosion structure schematic diagram of the second direction of this embodiment;

[0024] Figure 5 It is the structural schematic view of the detection shell in the embodiment;

[0025] Figure 6 It is the structural schematic view of the expansion block in the embodiment;

[0026] The figure mark is respectively: 1 - mounting seat, 2 - detection shell, 201 - installation cavity, 202 - detection port, 203 - avoiding mouth, 204 - mounting hole, 3 - pressure sensor, 4 - expansion block, 401 - movable slot, 402 - guide slot, 403 - connecting slot, 5 - force bar, 6 - driving piece, 7 - avoiding slot, 8 - guide column, 9 - connecting block, 10 - installation slot, 11 - through hole, 12 - fixing piece. DETAILED DESCRIPTION

[0027] The utility model will be described in further detail below in combination with the drawings and specific embodiment.

[0028] The embodiment, refer to Figures 1-6 Its specific implementation's grid spring clamping force detection head, including mounting seat 1, the side surface of mounting seat 1 is connected with detection shell 2, and the inside of detection shell 2 forms installation cavity 201, and pressure sensor 3 for detecting the clamping force of grid spring is connected in installation cavity 201, and the side surface of detection shell 2 is provided with detection port 202 in communication with installation cavity 201, and the detection end of pressure sensor 3 is exposed to detection port 202, and the side of detection shell 2 is provided with avoiding mouth 203 in communication with installation cavity 201, and expansion block 4 along avoiding mouth 203 is opened or shrunk and is connected in installation cavity 201, and the side of expansion block 4 close to pressure sensor 3 forms the opening in communication with movable slot 401, and expansion block 4 is connected with movable force bar 5 through movable slot 401, and driving piece 6 is arranged on mounting seat 1, and the telescopic end of driving piece 6 extends towards movable slot 401 and is connected with one end of force bar 5, and driving piece 6 can drive force bar 5 to move along movable slot 401, so that force bar 5 can drive expansion block 4 to move towards avoiding mouth 203.

[0029] The side of force bar 5 close to pressure sensor 3 is provided with avoiding slot 7. The expansion block 4 is provided with guide slot 402, and the guide direction of guide slot 402 extends obliquely to pressure sensor 3, and force bar 5 is provided with guide column 8 in paired connection with guide slot 402. Through the setting of guide slot 402, force bar 5 can move to pressure sensor 3 and extrude driving expansion block 4 to move towards avoiding mouth 203 under the driving of driving piece 6, and at the same time, pressure sensor 3 receives force and obtains force in the opposite direction, so that the clamping force value of grid spring can be obtained.

[0030] Specifically, two guide grooves 402 are arranged in the embodiment, two guide columns 8 are arranged and matched with the guide grooves 402 respectively, and the guide columns 8 are arranged at two ends of the stress rod 5.

[0031] The mounting hole 204 is arranged on the detection shell 2 and connected with the expansion block 4, and the connecting groove 403 is arranged on the expansion block 4 and matched with the mounting hole 204. The connecting groove 403 on the expansion block 4 is matched and connected with the mounting hole 204 of the detection shell 2, so that the expansion block 4 can move to the avoiding opening 203 under the extrusion of the stress rod 5, thereby forming the expansion and contraction action of the expansion block 4, improving the convenience and use effect of the connection.

[0032] The connecting block 9 is arranged on the detection shell 2, the mounting groove 10 is formed on the detection shell 2, the protrusion matched with the mounting groove 10 is arranged on the connecting block 9, and the through hole 11 communicated with the movable groove 401 is arranged on the connecting block 9. The through hole 11 communicated with the movable groove 401 is arranged on the connecting block 9, so that one end of the stress rod 5 extends to the movable groove 401 through the through hole 11, the through hole 11 ensures the moving direction of the stress rod 5, improves the stability and reliability of the stress rod 5, and further improves the accurate movement of the stress rod 5.

[0033] Specifically, the movement of the guide column 8 connected with the stress rod 5 along the guide groove 402 extrudes the expansion block 4 to form the expansion and contraction action, reduces the laborious plugging of the detection end during use, and reduces the phenomenon that the service life is affected by the long-time friction with the measured product during use.

[0034] The driving member 6 is made of a driving cylinder, and the driving cylinder is connected with one end of the stress rod 5 through a push rod. The connecting hole for connecting the pressure sensor 3 is arranged on the detection shell 2, one end of the pressure sensor 3 is connected with the connecting hole, the detection end of the pressure sensor 3 is exposed to the detection port 202, and the fixing member 12 is connected to the side surface of the mounting seat 1.

[0035] When the stress rod 5 moves along the movable groove 401 through the driving member 6, the expansion block 4 can be extruded to move to the avoiding opening 203 through the movement of the guide column 8 along the guide groove 402, so that the expansion block 4 is extruded outward within the limited displacement and at the same time receives the stress of the pressure sensor 3 in the opposite direction, thereby the clamping force of the grid spring can be obtained, and the convenience and stability of the test are improved.

[0036] The detection end of the pressure sensor 3 exposed to the detection port 202 is in contact with the external grid spring, so that the clamping force of the grid spring can be obtained. By controlling the extension and retraction of the driving cylinder, the force rod 5 can be driven to move towards or away from the pressure sensor 3 along the movable groove 401, and the expansion block 4 can be driven to move towards the avoidance port 203, so that the pressure sensor 3 can be controlled to make contact when detecting the grid spring, preventing the pressure sensor 3 from being in contact with the measured product for a long time.

[0037] Specifically, the detection of the existing grid spring can refer to CN 210719491 U and CN 217211218 U, which solves the technical problems of low detection efficiency and low detection accuracy of manual detection, resulting in low detection efficiency, large error and frequent faults. The utility model has the advantages of simple structure, convenient control, higher precision after long-term use, and further improved detection accuracy and service life compared with CN 210719491 U and CN 217211218 U.

[0038] The specific use process in the embodiment is: the detection part of the assembled detection head is inserted into the grid and contacted with the spring member, the expansion block 4 is connected with the mounting hole 204 of the detection shell 2 through the connecting groove 403, so that the expansion block 4 can move towards the avoidance port 203 through the connecting groove 403. Specifically, the movable groove 401 on the expansion block 4 realizes flexible guidance and limiting of the force rod 5, ensuring stable movement of the force rod 5 under the action of the driving part 6. The driving part 6 can drive the force rod 5 to extend and retract along the movable groove 401, so that the expansion block 4 can be extruded by the guide column 8 to open or close the avoidance port 203 through the connecting groove 403. The force rod 5, as a key component of the connecting driving part 6, can accurately transmit the driving force of the driving part 6 to the expansion block 4, so that the expansion block 4 can form the expansion and contraction action, and the expansion block 4 can be further reduced in size by being retracted into the mounting cavity 201, thereby facilitating the insertion and pairing with the external grid, reducing the use of the clamping end and the friction contact with the measured product during use. When the expansion block 4 needs to be detected, it is displaced towards the avoidance port 203 and opened, and at the same time it is in contact with the measured product (grid spring), which causes the pressure sensor 3 in the opposite direction to be stressed to obtain the clamping force value of the grid, ensuring the stability and reliability of the detection head during use, and improving the precision and service life of the detection device.

[0039] The above is only the preferred embodiment of the present application, and does not limit the present application in any form. Although the present application is disclosed as above in the preferred embodiment, it is not intended to limit the present application. Any skilled person in the art can make some changes or modifications to the disclosed technical content without departing from the technical solution of the present application, and any equivalent embodiment with equivalent changes is equivalent to the above embodiment. Any simple modification, equivalent change and modification of the above embodiment according to the present application technical solution are within the scope of the present application technical solution.

Claims

1. A lattice spring clamping force detection head comprising a mounting base, characterized by: The side of the mounting base is connected with a detection shell, an installation cavity is formed in the inside of the detection shell, a pressure sensor for detecting the clamping force of the grid spring is connected in the installation cavity, a detection port for communicating with the installation cavity is arranged on the side of the detection shell, the detection end of the pressure sensor is exposed to the detection port, an avoiding port for communicating with the installation cavity is arranged on one side of the detection shell, an expansion block for opening or closing along the avoiding port is connected in the installation cavity, a through movable groove is formed on the expansion block, an opening for communicating with the movable groove is formed on the side of the expansion block close to the pressure sensor, a movable force rod is connected to the expansion block through the movable groove, a driving member is arranged on the mounting base, the telescopic end of the driving member extends to the movable groove and is connected with one end of the force rod, the driving member can drive the force rod to move along the movable groove, so that the force rod can drive the expansion block to move to the avoiding port.

2. The reed spring clamping force detection head of claim 1, wherein: The side of the force rod close to the pressure sensor is provided with an avoiding slot.

3. The reed spring clamping force detection head of claim 1, wherein: A guide groove is arranged on the expansion block, the guide direction of the guide groove is inclined to extend to the pressure sensor, and a guide column is arranged on the force rod and is connected with the guide groove in a matched manner.

4. The reed spring clamping force detection head of claim 3, wherein: An installation hole is arranged on the detection shell and is connected with the expansion block, and a connecting groove is arranged on the expansion block and is matched with the installation hole.

5. The reed spring clamp force detection head of claim 1, wherein: A connecting block is arranged on the detection shell, a mounting groove is formed on the detection shell, a protrusion is arranged on the connecting block and is inserted into the mounting groove in a matched manner, and a through hole is arranged on the connecting block and is connected with the movable groove.

6. The reed spring clamping force detection head of any of claims 1-5, wherein: The driving member is made of a driving cylinder, and the driving cylinder is connected with one end of the force rod through a push rod.

7. The reed spring clamping force detection head of any of claims 1-5, wherein: A connecting hole is arranged on the detection shell and is connected with the pressure sensor, one end of the pressure sensor is connected with the connecting hole, the detection end of the pressure sensor is exposed to the detection port, and a fixing member is connected with the side of the mounting base.

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