Multi-point hardness testing device for special equipment

Abstract

The present invention discloses a multi-point hardness testing device for special equipment, which relates to the technical field of hardness testing, and comprises a push plate, wherein an opening structure is slidably sleeved on the push plate, a linear moving structure is arranged on one side of the push plate, the end of the push plate is rotatably connected with a supporting structure connected with the opening structure, a plurality of rolling structures are evenly arranged on the circumference of the supporting structure, and a detection device for detecting the inner wall of a pressure vessel is arranged on each rolling structure. The linear moving structure of the present invention drives the opening structure to move along the push plate, thereby opening the supporting structure in an umbrella shape, until the plurality of rolling structures abut against the inner wall of the pressure vessel, and then the push plate is pushed, so that the plurality of detection devices perform multi-point detection on the inner wall of the pressure vessel, and the opening structure is driven to rotate by the support structure, thereby ensuring that the pressure vessel can be comprehensively detected, and the device does not require multiple adjustments, thereby simplifying the operation steps and reducing the difficulty of operation.

Description

Technical Field

[0001] The invention relates to the technical field of hardness detection, and in particular to a multi-point hardness detection device for special equipment. Background Art

[0002] Special equipment refers to equipment such as boilers and pressure vessels that involve life safety and are more dangerous. Due to their certain dangers, their quality requirements are very strict and they need to be subjected to non-destructive testing regularly.

[0003] When inspecting large pressure vessels, workers are required to carry portable hardness testers to enter the pressure vessels for inspection. However, due to space limitations and internal light problems, and the need to conduct multiple inspections on one inspection point, the inspection is difficult. The existing invention patent with authorization announcement number CN116026715B discloses a multi-point hardness testing device for special equipment. Specifically, the device can automatically adapt to pressure vessels with different sizes of inner cavities by nesting a retractable movable coupling and a fixed coupling in a travel fixed sleeve and a travel adjustment movable rod. It can also realize multi-point hardness testing by driving multiple linked bevel gears to rotate through a center bevel gear disk. On the one hand, by detecting the rotation of the rotating ring body relative to the main detection ring body, the circumferential movement of the hardness testing component is completed to realize hardness testing at different points. Moreover, by driving multiple linked bevel gears to rotate through the center bevel gear disk, the axial movement is completed, and the axial movement of the entire device and the fine adjustment of the axial inspection points are realized.

[0004] However, this invention patent also has corresponding defects: when inspecting the inside of the pressure vessel, it is necessary to adjust the length of the corresponding components multiple times to roughly match the inner diameter of the pressure vessel, such as adjusting the extended length of the inspection movable support rod and the walking adjustment movable rod, and it is necessary to adjust the length of the corresponding components once and then adjust the components of the corresponding structure after entering the pressure vessel. However, due to the limited space inside the pressure vessel and the large number of corresponding components that need to adjust the length, the entire operation process is not only cumbersome but also difficult to operate. Summary of the invention

[0005] The purpose of the present invention is to provide a multi-point hardness testing device for special equipment to solve the problems raised in the above background technology.

[0006] In order to solve the above technical problems, the present invention specifically provides the following technical solutions:

[0007] A multi-point hardness testing device for special equipment includes a push plate, on which an opening structure is slidably sleeved, and one side of the push plate is provided with a linear moving structure for controlling the opening structure to move to any distance along the length direction of the push plate, and the end of the push plate is rotatably connected to a supporting structure connected to the opening structure, and the opening structure is used to slide along the push plate to open the supporting structure into an umbrella shape, and can rotate around the center line of the push plate synchronously with the supporting structure, and a plurality of rolling structures for moving along the inner wall of a pressure vessel are evenly arranged on the circumferential side of the support structure, and the plurality of rolling structures are evenly distributed around the center line of the push plate, and each of the rolling structures is provided with a detection device for detecting the inner wall of the pressure vessel.

[0008] As a preferred solution of the present invention, the linear moving structure includes a dial wheel rotatably connected to the push plate, one side of the dial wheel is connected to a screw rod rotatably connected to the push plate, and the support structure is threadedly connected to the screw rod, and the push plate is provided with a strip groove for installing the dial wheel and the screw rod.

[0009] As a preferred solution of the present invention, the support structure includes a ring that is slidably sleeved on the push plate, and the ring is threadedly connected to the screw, one end of the ring is rotatably connected to an annular seat, and a plurality of support rods are rotatably connected to the side of the annular seat away from the ring, and the plurality of support rods are evenly arranged on the annular seat around the center line of the push plate, and the plurality of support rods are rotatably connected to the supporting structure.

[0010] As a preferred solution of the present invention, the supporting structure includes a rotating device arranged on the push plate and a rotating seat rotatably connected to the end of the push plate and coaxial with the annular seat, and the rotating device is used to drive the rotating seat to rotate, and the peripheral side of the rotating seat is rotatably connected to multiple stretching rods, and the multiple stretching rods are respectively rotatably connected to multiple support rods on one side of the push plate, and are all connected to the rotating seat through a torsion spring, and the multiple rolling structures are respectively arranged on the corresponding stretching rods.

[0011] As a preferred solution of the present invention, the rolling structure includes a base plate rotatably connected to the end of the expansion rod through a torsion spring, and a plurality of rollers are rotatably connected to the side of the base plate facing away from the expansion rod. A plurality of receiving grooves are sequentially opened on the base plate along its length, and each of the receiving grooves is located between two adjacent rollers. An adsorption component is arranged in each of the receiving grooves, and the adsorption component is used to adsorb on the inner wall of the pressure vessel when the roller initially contacts the inner wall of the pressure vessel, and to break away from the contact with the inner wall of the pressure vessel through the rotation of the base plate after the expansion rod moves away from the push plate.

[0012] As a preferred solution of the present invention, the adsorption assembly includes a suction cup, the end of the suction cup facing the bottom plate is connected to a limiting slider, the end of the limiting slider facing away from the suction cup is connected to an elastic traction rope connected to the corresponding expansion rod, a return spring is provided on the sliding sleeve of the limiting slider, a stop block abutting against one end of the return spring is provided on the outer wall of the limiting slider, and the other end of the return spring abuts against the inner bottom of the accommodating groove, and the inner bottom of the accommodating groove is provided with a through groove slidably connected to the limit slider.

[0013] As a preferred solution of the present invention, an annular top plate is provided on the push plate, and the annular top plate is sleeved on the push plate and is used to limit the minimum angle between the propping rod and the push plate to be greater than zero degree.

[0014] As a preferred solution of the present invention, a guide groove is provided on the expansion rod, and a plurality of guide rods are rotatably connected to the inner wall of the guide groove corresponding to the plurality of suction cups, and a plurality of elastic traction ropes are respectively connected to the expansion rod through the corresponding guide rods.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] The present invention drives the support structure to move along the push plate through a linear moving structure, thereby opening the support structure in an umbrella shape until multiple rolling structures abut against the inner wall of the pressure vessel, and then pushes the push plate to enable multiple detection devices to perform multi-point detection on the inner wall of the pressure vessel, and drives the support structure to rotate through the support structure to ensure that the pressure vessel can be fully detected. The device does not require multiple adjustments, simplifies the operating steps, and reduces the difficulty of operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the implementation methods of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for the implementation methods or the description of the prior art. Obviously, the drawings in the following description are only exemplary, and for ordinary technicians in this field, other implementation drawings can be derived from the provided drawings without creative work.

[0018] Figure 1 It is a schematic diagram of the structure of the present invention from the first viewing angle as a whole;

[0019] Figure 2 It is a schematic diagram of the structure of the second viewing angle of the whole invention;

[0020] Figure 3 for Figure 1 A schematic diagram of the structure enlargement of part A shown in FIG.

[0021] Figure 4 It is a schematic diagram of the side cross-sectional structure of the rolling structure of the present invention.

[0022] The numbers in the figure represent the following:

[0023] 1. Push plate; 2. Opening structure; 3. Linear moving structure; 4. Support structure; 5. Rolling structure; 6. Detection device;

[0024] 201, sleeve ring; 202, annular seat; 203, support rod; 301, dial wheel; 302, screw rod; 303, strip groove; 401, rotating device; 402, rotating seat; 403, opening rod; 501, bottom plate; 502, roller; 503, receiving groove; 504, adsorption component; 505, suction cup; 506, limit slider; 507, elastic traction rope; 508, return spring; 509, stopper; 510, annular top plate; 511, guide groove; 512, guide rod. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0026] like Figures 1 to 4 As shown, the present invention provides a multi-point hardness testing device for special equipment, including a push plate 1, on which an opening structure 2 is slidably sleeved, and one side of the push plate 1 is provided with a linear moving structure 3 for controlling the opening structure 2 to move to any distance along the length direction of the push plate 1, and the end of the push plate 1 is rotatably connected to a support structure 4 connected to the opening structure 2, and the opening structure 2 is used to slide along the push plate 1 to open the support structure 4 into an umbrella shape, and can rotate synchronously with the support structure 4 around the center line of the push plate 1, and a plurality of rolling structures 5 for moving along the inner wall of the pressure vessel are evenly arranged on the circumferential side of the support structure 4, and the plurality of rolling structures 5 are evenly distributed around the center line of the push plate 1, and each rolling structure 5 is provided with a detection device 6 for detecting the inner wall of the pressure vessel.

[0027] When the present invention is actually applied, the staff controls the entire device to move along the axis of the pressure vessel by holding the push plate 1, so that the detection device 6 detects the weld inside the pressure vessel along the axial direction of the pressure vessel. In this embodiment, the detection device 6 is used to detect the hardness of the weld area on the inner wall of the pressure vessel, which is a prior art, such as joint detection through a camera and a portable hardness tester, etc., and multiple detection devices 6 are provided, which can detect the hardness of multiple areas at the same time, that is, it can perform multi-point hardness detection on the inner wall of the pressure vessel at the same time.

[0028] After the staff holds the push plate 1 and pushes the opening structure 2 and the support structure 4 into the pressure vessel, the linear moving structure 3 is started to push the opening structure 2 to move along the length direction of the push plate 1, so that the support structure 4 is squeezed by the opening structure 2 and unfolds in an umbrella shape, thereby allowing multiple rolling structures 5 to approach the inner wall of the pressure vessel from multiple directions until the multiple rolling structures 5 are against the inner wall of the pressure vessel. At this time, by pushing the push plate 1 and the support structure 4 to rotate, the detection device 6 can comprehensively and fully detect the welds on the inner wall of the pressure vessel, and only the linear moving structure 3 needs to drive the opening structure 2 to move to evenly distribute the multiple detection devices 6, which simplifies the operation steps and eliminates the need to adjust the length of a component after entering the pressure vessel, thereby avoiding the restriction of the internal space of the pressure vessel on the staff and reducing the difficulty of operation.

[0029] The linear moving structure 3 includes a dial wheel 301 rotatably connected to the push plate 1, one side of the dial wheel 301 is connected to a screw rod 302 rotatably connected to the push plate 1, and the support structure 2 is threadedly connected to the screw rod 302, and a strip groove 303 for installing the dial wheel 301 and the screw rod 302 is opened on the push plate 1.

[0030] The thumbwheel 301 is manually turned or driven to rotate by a driving device such as a motor, so that the screw rod 302 is driven to rotate by the thumbwheel 301 , thereby driving the support structure 2 to move along the length direction of the push plate 1 .

[0031] The strip groove 303 is used to accommodate the thumbwheel 301 and the screw rod 302 , thereby reducing the occupation of the external space of the push plate 1 .

[0032] The support structure 2 includes a ring 201 that is slidably sleeved on the push plate 1, and the ring 201 is threadedly connected to the screw 302. One end of the ring 201 is rotatably connected to an annular seat 202, and a side of the annular seat 202 that is away from the ring 201 is rotatably connected to multiple support rods 203, and the multiple support rods 203 are evenly arranged on the annular seat 202 around the center line of the push plate 1, and the multiple support rods 203 are all rotatably connected to the support structure 4.

[0033] The collar 201 slides along the length direction of the push plate 1 under the drive of the screw rod 302 , and drives the annular seat 202 to move, so that the multiple support rods 203 on the annular seat 202 move simultaneously to squeeze the support structure 4 to expand in an umbrella shape.

[0034] The supporting structure 4 includes a rotating device 401 arranged on the push plate 1 and a rotating seat 402 rotatably connected to the end of the push plate 1 and coaxial with the annular seat 202, and the rotating device 401 is used to drive the rotating seat 402 to rotate, and the peripheral side of the rotating seat 402 is rotatably connected with multiple stretching rods 403, and the multiple stretching rods 403 are rotatably connected to the multiple support rods 203 on one side of the push plate 1, and are all connected to the rotating seat 402 through a torsion spring, and multiple rolling structures 5 are respectively arranged on the corresponding stretching rods 403.

[0035] When squeezed by the support rod 203, the corresponding expansion rod 403 rotates in the direction away from the push plate 1, so that the multiple expansion rods 403 are unfolded in an umbrella shape, so that the multiple detection devices 6 and rolling structures 5 are evenly distributed on the peripheral side of the push plate 1 and evenly distributed on the inner side of the inner wall of the pressure vessel.

[0036] When detecting the position of the weld on the inner wall of the pressure vessel and the hardness of the corresponding position, the rotating device 401 drives the rotating seat 402 to rotate around the center line of the push plate 1, and drives the annular seat 202 to rotate synchronously through the connection relationship between the multiple expansion rods 403 and the corresponding support rods 203, so that the detection device 6 can detect the inside of the pressure vessel along the axial and circumferential directions of the pressure vessel (i.e., the direction of rotation around the axis of the pressure vessel), thereby avoiding the problem of requiring multiple operations to allow multiple detection devices 6 to approach the inner wall of the pressure vessel, simplifying the operating steps, and through the multiple expansion rods 403 that gradually open in an umbrella shape, the multiple rolling structures 5 can directly adapt to the inner diameter of the pressure vessel and abut against the inner wall of the pressure vessel during the rotation of the expansion rods 403, thereby avoiding the problem of needing to enter the interior of the pressure vessel for operation and reducing the difficulty of operation.

[0037] The rolling structure 5 includes a bottom plate 501 rotatably connected to the end of the stretching rod 403 through a torsion spring, and a plurality of rollers 502 are rotatably connected to the side of the bottom plate 501 facing away from the stretching rod 403. A plurality of receiving grooves 503 are sequentially opened on the bottom plate 501 along its length, and each receiving groove 503 is located between two adjacent rollers 502. An adsorption component 504 is arranged in each receiving groove 503, and the adsorption component 504 is used to adsorb on the inner wall of the pressure vessel when the roller 502 initially contacts the inner wall of the pressure vessel, and to break away from the inner wall of the pressure vessel through the rotation of the bottom plate 501 after the stretching rod 403 is away from the push plate 1.

[0038] When the push plate 1 enters the interior of the pressure vessel, multiple rollers 502 on one of the bottom plates 501 contact the inner wall of the pressure vessel at the same time, and the corresponding adsorption assembly 504 is attracted to the inner wall of the pressure vessel, thereby fixing the bottom plate 501 to the inner wall of the pressure vessel and maintaining the stability of the entire device during initial operation.

[0039] And because both ends of the roller 502 are in contact with the inner wall of the pressure vessel and in rolling contact with the pressure vessel, the friction resistance is smaller when the push plate 1 moves into the interior of the pressure vessel, and multiple rollers 502 are arranged in sequence, which can effectively ensure that the push plate 1 is placed and advanced along the axial direction of the pressure vessel, and enable the adsorption component 504 to be effectively adsorbed on the inner wall of the pressure vessel.

[0040] During the process of rotating and unfolding the expansion rod 403, the base plate 501 rotates around the expansion rod 403, so that the distance between the base plate 501 and one side of the expansion rod 403 gradually increases, thereby causing the adsorption component 504 to break away from the inner wall of the pressure vessel and enter the receiving groove 503, avoiding subsequent obstruction to the movement of the entire device in the pressure vessel.

[0041] After the roller 502 is separated from the inner wall of the pressure container, the bottom plate 501 is automatically reset under the elastic force of the torsion spring. At this time, the bottom plate 501 rotates to be parallel to the side of the expansion rod 403 away from the push plate 1.

[0042] The adsorption assembly 504 includes a suction cup 505, the end of the suction cup 505 facing the bottom plate 501 is connected to a limiting slider 506, the end of the limiting slider 506 facing away from the suction cup 505 is connected to an elastic traction rope 507 connected to the corresponding expansion rod 403, a return spring 508 is slidably sleeved on the limiting slider 506, a stopper 509 is provided on the outer wall of the limiting slider 506, and the other end of the return spring 508 is abutted against the inner bottom of the accommodating groove 503, and the inner bottom of the accommodating groove 503 is provided with a through groove slidably connected to the limiting slider 506.

[0043] The suction cup 505 is used to contact the inner wall of the pressure vessel and is squeezed and attracted to the inner wall of the pressure vessel by the gravity of the entire device. During the rotation of the expansion rod 403, the distance between the bottom plate 501 and the outer wall of the expansion rod 403 that is away from the push plate 1 gradually increases, and the limit slider 506 is pulled along the through groove by the elastic traction rope 507, while the distance between the bottom plate 501 and the inner wall of the pressure vessel remains unchanged, so that the suction cup 505 gradually breaks away from the inner wall of the pressure vessel under the traction of the limit slider 506, which not only ensures the stability of the device when the support structure 4 is initially unfolded, but also avoids the obstruction of the suction cup 505 to the movement of the roller 502.

[0044] The stopper 509 is used to limit the return spring 508 to be located between the stopper 509 and the inner wall of the accommodating groove 503, so that the return spring 508 is gradually compressed during the process of the suction cup 505 being separated from the pressure container, and the return spring 508 can drive the suction cup 505 to automatically reset when the device is separated from the pressure container.

[0045] An annular top plate 510 is provided on the push plate 1 , and the annular top plate 510 is sleeved on the push plate 1 and is used to limit the minimum angle between the propping rod 403 and the push plate 1 to be greater than zero degree.

[0046] The outer wall of the annular top plate 510 abuts against the expansion rod 403 to limit the minimum distance between the end of the expansion rod 403 and the push plate 1, so that the bottom plate 501 protrudes to the outside of the rotating seat 402, so that the suction cup 505 can effectively and fully contact the inner wall of the pressure vessel when the device is placed in the pressure vessel, and then be adsorbed on the inner wall of the pressure vessel.

[0047] A guide groove 511 is provided on the opening rod 403 , and a plurality of guide rods 512 are rotatably connected to the inner side wall of the guide groove 511 corresponding to the plurality of suction cups 505 , and a plurality of elastic traction ropes 507 are connected to the opening rod 403 through the corresponding guide rods 512 .

[0048] By means of the correspondingly arranged guide rod 512 , the elastic traction rope 507 can be pulled along the sliding direction of the limiting slider 506 , and the traction effect is better.

[0049] The above embodiments are only exemplary embodiments of the present application and are not intended to limit the present application. The protection scope of the present application is defined by the claims. Those skilled in the art may make various modifications or equivalent substitutions to the present application within the essence and protection scope of the present application, and such modifications or equivalent substitutions shall also be deemed to fall within the protection scope of the present application.

Claims

1. A multi-point hardness testing device for special equipment, comprising a push plate (1), characterized in that: The push plate (1) is slidably sleeved with an opening structure (2), one side of the push plate (1) is provided with a linear moving structure (3) for controlling the opening structure (2) to move to any distance along the length direction of the push plate (1), the end of the push plate (1) is rotatably connected to a support structure (4) connected to the opening structure (2), and the opening structure (2) is used to slide along the push plate (1) to open the support structure (4) into an umbrella shape, and can rotate synchronously with the support structure (4) around the center line of the push plate (1), a plurality of rolling structures (5) for moving along the inner wall of the pressure vessel are evenly arranged on the peripheral side of the support structure (4), and the plurality of rolling structures (5) are evenly distributed around the center line of the push plate (1), and each of the rolling structures (5) is provided with a detection device (6) for detecting the inner wall of the pressure vessel; The linear moving structure (3) comprises a thumbwheel (301) rotatably connected to the push plate (1); one side of the thumbwheel (301) is connected to a screw rod (302) rotatably connected to the push plate (1); the support structure (2) is threadedly connected to the screw rod (302); and the push plate (1) is provided with a strip groove (303) for mounting the thumbwheel (301) and the screw rod (302); The support structure (2) comprises a collar (201) slidably sleeved on the push plate (1), and the collar (201) is threadedly connected to a screw rod (302), one end of the collar (201) is rotatably connected to an annular seat (202), a side of the annular seat (202) facing away from the collar (201) is rotatably connected to a plurality of support rods (203), and the plurality of support rods (203) are evenly arranged on the annular seat (202) around the center line of the push plate (1), and the plurality of support rods (203) are all rotatably connected to the support structure (4); The support structure (4) comprises a rotating device (401) arranged on the push plate (1) and a rotating seat (402) rotatably connected to the end of the push plate (1) and coaxial with the annular seat (202), and the rotating device (401) is used to drive the rotating seat (402) to rotate, and the peripheral side of the rotating seat (402) is rotatably connected to a plurality of spreading rods (403), and the plurality of spreading rods (403) are rotatably connected to the plurality of supporting rods (203) on one side facing the push plate (1), and are all connected to the rotating seat (402) via a torsion spring, and the plurality of rolling structures (5) are respectively arranged on the corresponding spreading rods (403); The rolling structure (5) comprises a bottom plate (501) rotatably connected to the end of the spreading rod (403) via a torsion spring, a plurality of rollers (502) are rotatably connected to the bottom plate (501) on a side facing away from the spreading rod (403), a plurality of receiving grooves (503) are sequentially provided on the bottom plate (501) along its length, and each of the receiving grooves (503) is located between two adjacent rollers (502), an adsorption component (504) is provided in each of the receiving grooves (503), and the adsorption component (504) is used to adsorb on the inner wall of the pressure vessel when the roller (502) initially contacts the inner wall of the pressure vessel, and to disengage from the inner wall of the pressure vessel through the rotation of the bottom plate (501) after the spreading rod (403) is away from the push plate (1); The adsorption component (504) comprises a suction cup (505), the end of the suction cup (505) facing the bottom plate (501) is connected to a limiting slider (506), the end of the limiting slider (506) facing away from the suction cup (505) is connected to an elastic traction rope (507) connected to the corresponding opening rod (403), a return spring (508) is slidably sleeved on the limiting slider (506), a stopper (509) abutting against one end of the return spring (508) is provided on the outer wall of the limiting slider (506), and the other end of the return spring (508) abuts against the inner bottom of the accommodating groove (503), and the inner bottom of the accommodating groove (503) is provided with a through groove slidably connected to the limiting slider (506).

2. The multi-point hardness testing device for special equipment according to claim 1, characterized in that: The push plate (1) is provided with an annular top plate (510), which is sleeved on the push plate (1) and is used to limit the minimum angle between the propping rod (403) and the push plate (1) to be greater than zero degrees.

3. The multi-point hardness testing device for special equipment according to claim 1, characterized in that: The spreading rod (403) is provided with a guide groove (511), and the inner side wall of the guide groove (511) is rotatably connected to a plurality of guide rods (512) corresponding to the plurality of suction cups (505), and the plurality of elastic traction ropes (507) are respectively connected to the spreading rod (403) through the corresponding guide rods (512).

Images