A magnetic cylinder position detection device

Abstract

The present invention relates to the technical field of cylinder detection equipment, and in particular to a magnetic cylinder position detection device, comprising: a cylinder assembly, including a cylinder body, a piston rod slidably connected to the inside of the cylinder body, a magnetic ring arranged at the end of the piston rod, and a groove formed by being recessed from the side of the cylinder body toward the piston rod; a detection assembly, wherein the detection assembly is arranged on the side of the cylinder body, and comprises a mounting portion arranged on the side of the cylinder body and close to the groove, a telescopic member arranged on the inside of the mounting portion, and an iron block arranged at the end of the telescopic member and matching the groove. The present invention detects whether the cylinder is in a normal starting position by the detection assembly provided, thereby determining whether the cylinder position is abnormal. Through the cooperation between the inspection assembly and the control assembly, when the cylinder position fails, the actual position of the cylinder can be quickly located, thereby solving the problem of inconvenient piston rod position detection of the magnetic cylinder, and accurately and quickly detecting the fault position of the cylinder.

Description

Technical Field

[0001] The present invention relates to the technical field of cylinder detection equipment, in particular to a magnetic cylinder position detection device. Background Art

[0002] In large thermal power plants, pneumatic doors are widely used in valve selection due to their advantages such as large torque, fast action, low cost and strong anti-interference. Accurate closed-loop control is a basic requirement for daily control. In the past, swing arm travel switches often caused abnormal pneumatic door control due to problems such as valve striker jamming, deformation, and mechanical loosening. In recent years, magnetic cylinders have been widely used. Because the valve is driven by the cylinder, the piston rod of the cylinder drive is directly connected to the valve and is in a relatively static state. That is, the actuator and the valve can be equivalent to a whole. By detecting the position of the cylinder piston rod, the valve position can be effectively judged.

[0003] During use, although the failure rate is not as high as that of mechanical stroke feedback, it also faces the same problem. Since the actual position cannot be monitored at any time, once the valve is stuck, the actual position cannot be determined, and the pneumatic door position failure problem cannot be solved efficiently. The existing method can detect the piston rod position by moving the magnetic induction switch on the cylinder surface. When it senses the magnet on the piston rod, the magnetic induction switch will automatically light up, but this method takes a long time to find and is not convenient for accurate measurement. Therefore, it is necessary to design a position detection device to achieve accurate measurement of the cylinder position and assist in accurate positioning and debugging of the pneumatic actuator. Summary of the Invention

[0004] The purpose of this section is to summarize some aspects of the embodiments of the present invention and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the abstract and title of this application to avoid obscuring the purpose of this section, the abstract and the title of the invention, and such simplifications or omissions should not be used to limit the scope of the present invention.

[0005] The present invention is proposed in view of the problem of inconvenience in detecting the piston rod position of a magnetic cylinder in the prior art.

[0006] Therefore, one of the objects of the present invention is to provide a magnetic cylinder position detection device.

[0007] In order to solve the above technical problems, the present invention provides the following technical solutions: a magnetic cylinder position detection device, comprising:

[0008] The cylinder assembly includes a cylinder body, a piston rod slidably connected to the inside of the cylinder body, a magnetic ring arranged at the end of the piston rod, and a groove formed from the side of the cylinder body toward the piston rod;

[0009] The detection component is arranged on the side of the cylinder body, and includes a mounting portion arranged on the side of the cylinder body and close to the groove, a telescopic member arranged inside the mounting portion, and an iron block arranged at the end of the telescopic member and matching the groove.

[0010] As a preferred solution of the magnetic cylinder position detection device described in the present invention, the telescopic part includes a connecting rod arranged on the inner side of the mounting part, a telescopic rod slidably connected to the inner side of the connecting rod and connected to the iron block, and a first spring arranged between the connecting rod and the telescopic rod.

[0011] As a preferred solution of the magnetic cylinder position detection device described in the present invention, it also includes a patrol inspection component arranged on one side of the mounting part, and the patrol inspection component includes connecting blocks arranged on both sides of the cylinder body, a threaded rod arranged between the connecting blocks and connected to the mounting part, and a scale rod arranged between the connecting blocks and slidably connected to the mounting part.

[0012] As a preferred solution of the magnetic cylinder position detection device of the present invention, wherein: the threaded rod includes smooth portions provided at both ends and a threaded portion provided in the middle section;

[0013] An extrusion rod is slidably connected inside the connecting block, a convex block with a bevel is provided at the end of the extrusion rod, a fourth spring is connected between the convex block and the connecting block, and a spiral stopper matching the convex block is provided on the surface of the smooth portion close to the inside of the connecting block.

[0014] As a preferred solution of the magnetic cylinder position detection device described in the present invention, the mounting part includes a mounting block slidably connected to the surface of the cylinder body, a fixed block arranged between the mounting block and the connecting rod and matching the scale rod, and a movable part arranged between the fixed block and the mounting block and matching the threaded rod.

[0015] As a preferred solution of the magnetic cylinder position detection device described in the present invention, the movable part includes a semi-threaded sleeve arranged on the surface of the threaded rod and distributed up and down, limit blocks arranged on both sides of the semi-threaded sleeve, a second spring arranged between the limit blocks close to the fixed block side, and a limit column arranged on the side of the limit block close to the mounting block side.

[0016] As a preferred solution of the magnetic cylinder position detection device described in the present invention, a control component is provided on one side of the mounting block, and the control component includes a first transmission component provided on the inner side of the mounting block and matching the movable part, a second transmission component provided on one side of the mounting block and matching the first transmission component, and a control component provided on the other side of the mounting block and matching the second transmission component.

[0017] As a preferred embodiment of the magnetic cylinder position detection device of the present invention, the first transmission member includes a rotating column rotatably connected to the interior of the mounting block, a track groove provided at one end of the rotating column and matching the limit column, and a gear provided at the other end of the rotating column;

[0018] There are two groups of track grooves, and the two groups of track grooves extend from the inner side to the outer side of the rotating column in a curved track, and the two groups of track grooves are centrally symmetrically distributed relative to the axis of the rotating column.

[0019] As a preferred solution of the magnetic cylinder position detection device described in the present invention, the second transmission member includes a first slide groove arranged inside the mounting block, a U-shaped rod slidably connected to the inner side of the first slide groove, a third spring connected between the U-shaped rod and the first slide groove, a rack arranged on one side of the U-shaped rod and matching the gear, and a support block arranged on the other side of the U-shaped rod.

[0020] As a preferred embodiment of the magnetic cylinder position detection device of the present invention, the control member includes a fixed rod provided on one side of the mounting block, a blocking block rotatably connected to the surface of the fixed rod and matched with the support block, a torsion spring provided between the blocking block and the fixed rod, and a pull rod provided obliquely on one side of the blocking block;

[0021] A second sliding groove is provided on one side of the connecting rod, and a sliding block is provided on the side of the telescopic rod, which is slidably connected to the second sliding groove and matched with the pull rod.

[0022] The beneficial effects of a magnetic cylinder position detection device of the present invention: the present invention detects whether the cylinder is in a normal starting position through the detection component set up, thereby judging whether the cylinder position is abnormal. Through the cooperation between the inspection component and the control component, when the cylinder position fails, the actual position of the cylinder can be quickly located, solving the problem of inconvenient piston rod position detection of the magnetic cylinder, and accurately and quickly detecting the fault position of the cylinder. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. Those skilled in the art can also derive other drawings based on these drawings without inventive effort. Among them:

[0024] Figure 1 It is a three-dimensional structural schematic diagram of the cylinder assembly and detection assembly of the magnetic cylinder position detection device of the present invention.

[0025] Figure 2 For the present invention Figure 1 An enlarged schematic diagram of the structure at point A is shown.

[0026] Figure 3 It is a schematic diagram of the three-dimensional structure of the inspection component of the magnetic cylinder position detection device of the present invention.

[0027] Figure 4 For the present invention Figure 3 An enlarged schematic diagram of the structure at point B is shown.

[0028] Figure 5 It is a schematic diagram of the three-dimensional structure of the installation part of the inspection component of the magnetic cylinder position detection device of the present invention.

[0029] Figure 6 This is a schematic diagram of the three-dimensional structure of the mounting portion of the magnetic cylinder position detection device before the semi-threaded sleeve is separated.

[0030] Figure 7 This is a schematic diagram of the cross-sectional structure of the installation portion of the magnetic cylinder position detection device before the semi-threaded sleeve is separated.

[0031] Figure 8 This is a schematic diagram of the three-dimensional structure of the installation part of the magnetic cylinder position detection device after the half-threaded sleeve is separated.

[0032] Figure 9 This is a schematic diagram of the cross-sectional structure of the installation part of the magnetic cylinder position detection device of the present invention after the half-threaded sleeve is separated.

[0033] Figure 10 This is a schematic diagram of the three-dimensional structure of the control component before the semi-threaded sleeve is separated in the magnetic cylinder position detection device of the present invention.

[0034] Figure 11 This is a schematic diagram of the three-dimensional structure of the control component of the magnetic cylinder position detection device after the half-threaded sleeve is separated.

[0035] Figure 12 It is a schematic diagram of the exploded structure of the cooperation between the movable part and the first transmission part of the magnetic cylinder position detection device of the present invention.

[0036] Figure 13 This is a schematic diagram of the internal structure of the connecting block of the magnetic cylinder position detection device of the present invention.

[0037] Figure 14 This is a schematic diagram of the internal structure of the connecting block of the magnetic cylinder position detection device of the present invention from another angle. DETAILED DESCRIPTION

[0038] In order to make the objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0039] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0040] Secondly, the term "one embodiment" or "embodiment" herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in various places throughout this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive of other embodiments.

[0041] Example 1

[0042] Reference Figure 1 and Figure 2 , which is the first embodiment of the present invention, provides a magnetic cylinder position detection device that can confirm whether a cylinder jam occurs. It includes: a cylinder assembly 100 and a detection assembly 200. The detection assembly 200 is arranged on the surface of the cylinder assembly 100 to detect whether the cylinder is in a normal working state.

[0043] Specifically, the cylinder assembly 100 includes a cylinder body 101, a piston rod 102 slidably connected to the cylinder body 101, a magnetic ring 103 disposed at the end of the piston rod 102, and a groove 104 formed by a depression from the side of the cylinder body 101 toward the piston rod 102. When the cylinder is activated, the piston rod 102 drives the magnetic ring 103 to move with it. The groove 104, formed by the depression from the side of the cylinder body 101 toward the piston rod 102, can shorten the minimum distance from the magnetic ring 103, thereby enhancing the maximum attractive force and facilitating detection.

[0044] Furthermore, the detection assembly 200 is arranged on the side of the cylinder body 101, and includes a mounting portion 201 arranged on the side of the cylinder body 101 and close to the groove 104, a telescopic member 202 arranged on the inner side of the mounting portion 201, and an iron block 203 arranged at the end of the telescopic member 202 and matching the groove 104. When the magnetic ring 103 and the iron block 203 are close to each other, the magnetic ring 103 will give the iron block 203 the greatest attraction, so that the iron block 203 can be displaced by the telescopic member 202, and the position of the magnetic ring 103 and the piston rod 102 can be detected by the position change of the iron block 203. The preferred solution is to replace the iron block 203 with a magnetic induction switch with an indicator light. When the iron block 203 is attracted by the magnetic force passing through the magnetic ring 103, the magnetic induction switch is triggered and the indicator light is on. In this way, the position of the magnetic ring 103 and the piston rod 102 can also be detected.

[0045] The telescopic member 202 includes a connecting rod 202a disposed inside the mounting portion 201, a telescopic rod 202b slidably connected to the inside of the connecting rod 202a and connected to the iron block 203, and a first spring 202c disposed between the connecting rod 202a and the telescopic rod 202b. When the magnetic ring 103 and the iron block 203 are aligned, the magnetic ring 103 exerts maximum attraction on the iron block 203. The force exerted on the iron block 203 compresses the first spring 202c, causing the telescopic rod 202b to extend from the connecting rod 202a until the iron block 203 is attracted by the magnetic ring 103 and fits into the bottom of the groove 104.

[0046] Under normal circumstances, the weight of the iron block 203 itself is balanced with the elastic force of the first spring 202c. At this time, the iron block 203 and the bottom of the groove 104 are in a suspended state. Before the cylinder is started, the magnetic ring 103 at the end of the piston rod 102 corresponds to the detection component 200 in the initial position. The magnetic ring 103 and the iron block 203 are closest. At this time, the magnetic ring 103 will give the iron block 203 the greatest attraction. The iron block 203 is forced to compress the first spring 202c, causing the telescopic rod 202b to extend from the connecting rod 202a until the iron block 203 is attracted by the magnetic ring 103 and fits into the bottom of the groove 104.

[0047] After the cylinder is started, the piston rod 102 moves in the cylinder body 101, driving the magnetic ring 103 to move, so that the magnetic ring 103 gradually moves away from the initial position and gradually approaches the final position. After the magnetic ring 103 leaves the initial position, the iron block 203 loses attraction and resets under the elastic force of the first spring 202c, and the iron block 203 moves out of the groove 104. After the cylinder stops running, if the piston rod 102 moves normally to the final position, the iron block 203 of the final position detection component 200 should also be attracted by the magnetic ring 103 to fit with the bottom of the groove 104, indicating that the cylinder is in a normal state. Otherwise, after the cylinder stops running, the iron block 203 of the final position detection component 200 is not attracted by the magnetic ring 103 to fit with the bottom of the groove 104, which indicates that the cylinder is abnormal and the actual position of the piston rod 102 needs to be further detected.

[0048] In summary, by setting up the cylinder assembly 100 and the detection assembly 200 for use in conjunction, it is possible to detect whether the cylinder has reached a specific position. Installing the detection assembly 200 at the starting and end positions of the cylinder assembly 100 solves the problem of detecting whether the cylinder has completed the predetermined stroke.

[0049] Example 2

[0050] Reference Figure 3-12 This is the second embodiment of the present invention. Different from the previous embodiment, this embodiment provides an inspection component 300 and a control component 400, which solves the problem of inconvenience in locating the abnormal position of the cylinder.

[0051] Specifically, the inspection assembly 300 includes connecting blocks 301 disposed on both sides of the cylinder body 101, a threaded rod 302 disposed between the connecting blocks 301 and connected to the mounting portion 201, and a scale rod 303 disposed between the connecting blocks 301 and slidably connected to the mounting portion 201. The scale rod 303 is marked with scale numbers (not shown) to facilitate quick measurement. By rotating the threaded rod 302, the mounting portion 201 can be moved along the direction of the scale rod 303, thereby moving the mounting portion 201 from the initial position of the cylinder operation to the final position, facilitating inspection.

[0052] Furthermore, the mounting portion 201 includes a mounting block 201a slidably connected to the surface of the cylinder body 101, a fixed block 201b arranged between the mounting block 201a and the connecting rod 202a and matched with the scale rod 303, and a movable part 201c arranged between the fixed block 201b and the mounting block 201a and matched with the threaded rod 302. When the threaded rod 302 is rotated, the threaded rod 302 can be threadedly engaged with the movable part 201c, thereby driving the mounting block 201a to move along the surface of the cylinder body 101. The scale rod 303 provides a guiding function, so that the mounting portion 201 can move from the initial position of the cylinder operation to the end position.

[0053] The movable part 201c includes a semi-threaded sleeve 201c-1 disposed on the surface of the threaded rod 302 and distributed vertically, limit blocks 201c-2 disposed on both sides of the semi-threaded sleeve 201c-1, a second spring 201c-3 disposed between the limit blocks 201c-2 on the side near the fixed block 201b, and a limit post 201c-4 disposed on the side of the limit block 201c-2 on the side near the mounting block 201a. By providing the semi-threaded sleeve 201c-1 with a separable structure, when the mounting portion 201 drives the iron block 203 to move to the position of the magnetic ring 103 during an inspection, the semi-threaded sleeve 201c-1 is triggered to separate vertically, so that the rotation of the threaded rod 302 can no longer drive the mounting portion 201 to move, and the mounting portion 201 stops, thereby locating the abnormal position. The actual stroke is accurately obtained by reading the distance between the starting position and the abnormal position on the scale rod 303.

[0054] Specifically, a control component 400 is provided on one side of the mounting block 201a, and the control component 400 includes a first transmission member 401 provided on the inner side of the mounting block 201a and matching with the movable member 201c, a second transmission member 402 provided on one side of the mounting block 201a and matching with the first transmission member 401, and a control member 403 provided on the other side of the mounting block 201a and matching with the second transmission member 402; the first transmission member 401 includes a rotating column 401a rotatably connected to the inside of the mounting block 201a, a track groove 401b provided at one end of the rotating column 401a and matching with the limit column 201c-4, and a gear 401c provided at the other end of the rotating column 401a; there are two groups of track grooves 401b, and the two groups of track grooves 401b extend from the inner side to the outer side of the rotating column 401a in a curved trajectory, and the two groups of track grooves 401b are centrally symmetrically distributed relative to the axis of the rotating column 401a. In this way, during the rotation of the rotating column 401a, the limiting columns 201c-4 distributed on the upper and lower half-threaded sleeves 201c-1 will move outward along the track groove 401b relative to the center of the limiting columns 201c-4, and drive the upper and lower limiting blocks 201c-2 to gradually move to the upper and lower sides. The limiting blocks 201c-2 move backwards and drive the half-threaded sleeves 201c-1 to separate up and down.

[0055] The second transmission member 402 includes a first slot 402a disposed within the mounting block 201a, a U-shaped rod 402b slidably connected to the inside of the first slot 402a, a third spring 402c connected between the U-shaped rod 402b and the first slot 402a, a rack 402d disposed on one side of the U-shaped rod 402b and mating with the gear 401c, and a support block 402e disposed on the other side of the U-shaped rod 402b. When the support block 402e is no longer blocked, the elastic force of the third spring 402c drives the U-shaped rod 402b connected to the support block 402e to move upward along the first slot 402a. The upward movement of the support block 402e drives the rack 402d upward. The upward movement of the rack 402d engages with the gear 401c, driving the gear 401c to rotate. The rotation of the gear 401c drives the rotating column 401a to rotate, thereby facilitating the separation of the upper and lower threaded sleeve halves 201c-1.

[0056] Preferably, the control member 403 includes a fixed rod 403a arranged on one side of the mounting block 201a, a blocking block 403b rotatably connected to the surface of the fixed rod 403a and matched with the support block 402e, a torsion spring 403c arranged between the blocking block 403b and the fixed rod 403a, and a pull rod 403d obliquely arranged on one side of the blocking block 403b; the blocking block 403b acts as a limit on the support block 402e, preventing the rack 402d from being accidentally bumped and moved upward, and the downward movement of the rack 402d has a tendency to cause the gear 401c and the rotating column 401a to rotate in the opposite direction. The reverse rotation of the rotating column 401a will cause the upper and lower half threaded sleeves 201c-1 to conflict with each other, and thus they will also be limited and fixed, without affecting use.

[0057] A second slot 202a-1 is provided on one side of the connecting rod 202a, and a sliding block 202b-1 is provided on the side of the telescopic rod 202b, which is slidably connected to the second slot 202a-1 and matches the pull rod 403d. When the pull rod 403d is moved, it rotates via the fixed rod 403a. After the rotation, the pull rod 403d can be reset by the torsion spring 403c. The rotation of the pull rod 403d causes the blocking block 403b to rotate away from the support block 402e. Once the support block 402e is no longer blocked, it drives the U-shaped rod 402b upward.

[0058] In the initial state, the half-threaded sleeves 201c-1 distributed above and below the surface of the threaded rod 302 are overlapped, and the half-threaded sleeves 201c-1 are restricted from separating by blocking the limit column 201c-4. Therefore, after the threaded rod 302 is rotated, the half-threaded sleeve 201c-1 drives the movable part 201c to move along the direction of the scale rod 303 on the surface of the threaded rod 302. The movement of the movable part 201c drives the mounting part 201 to move until the mounting part 201 moves to the abnormal position where the magnetic ring 103 is located. The iron block 203 is attracted by the magnetic ring 103 and moves downward to fit the bottom of the groove 104.

[0059] During the downward movement of the iron block 203, the telescopic rod 202b is driven downward, and the telescopic rod 202b drives the sliding block 202b-1 to move downward along the second slide groove 202a-1. During the downward movement of the sliding block 202b-1, the pull rod 403d is toggled, so that the pull rod 403d rotates through the fixed rod 403a. The rotation of the pull rod 403d drives the blocking block 403b to rotate away from the supporting block 402e. After the supporting block 402e loses its obstruction, it will be released by the third spring 4 Under the action of the elastic force of 02c, the U-shaped rod 402b connected to the support block 402e moves upward along the first sliding groove 402a. The upward movement of the support block 402e drives the rack 402d to move upward. The rack 402d moves upward and engages with the gear 401c, driving the gear 401c to rotate. The rotation of the gear 401c drives the rotating column 401a to rotate. The rotating column 401a rotates and squeezes the limiting column 201c-4 through the track groove 401b extending from the inside to the outside.

[0060] During the rotation of the rotating column 401a, the limiting columns 201c-4 distributed on the upper and lower half-threaded sleeves 201c-1 will move outward along the track groove 401b relative to the center of the limiting columns 201c-4, and drive the upper and lower limiting blocks 201c-2 to gradually move to the upper and lower sides. The limiting blocks 201c-2 move backwards and drive the half-threaded sleeves 201c-1 to separate up and down. After the half-threaded sleeves 201c-1 are separated up and down, they are no longer threadedly connected to the threaded rod 302. That is, rotating the threaded rod 302 will not drive the mounting part 201 to move through the half-threaded sleeve 201c-1. The mounting part 201 automatically stays at the abnormal position of the cylinder, thereby realizing the positioning of the abnormal position of the cylinder.

[0061] In summary, by using the inspection component 300 in conjunction with the control component 400, the mounting portion 201 can be moved from the initial position of the cylinder operation to the end position, which is convenient for inspection, and can stop automatically when moving to an abnormal position of the cylinder, thereby realizing the positioning of the abnormal position of the cylinder.

[0062] Example 3

[0063] Reference Figure 13-14 , which is the third embodiment of the present invention. Different from the previous embodiment, this embodiment provides smooth portions 302a arranged at both ends of the threaded rod 302 and a threaded portion 302b arranged in the middle section, which solves the problem of resetting the half-threaded sleeve 201c-1 after separation from top to bottom.

[0064] Specifically, the threaded rod 302 includes smooth portions 302a at both ends and a threaded portion 302b in the middle. The threaded portion 302b engages the semi-threaded sleeve 201c-1 to drive the mounting portion 201. By moving the separated semi-threaded sleeve 201c-1 from the smooth portion 302a to the threaded portion 302b, the semi-threaded sleeve 201c-1 re-engages with the threaded portion 302b, facilitating the next inspection.

[0065] The connecting block 301 is slidably connected to an extrusion rod 301a. A beveled projection 301b is provided at the end of the extrusion rod 301a. A fourth spring 301c is connected between the projection 301b and the connecting block 301. A spiral stopper 301d is provided on the surface of the smooth portion 302a near the interior of the connecting block 301, matching the projection 301b. The spiral stopper 301d occupies half the surface of the smooth portion 302a. Therefore, as the smooth portion 302a rotates half a circle, the spiral stopper 301d gradually engages the bevel on one side of the projection 301b, causing the projection 301b to drive the extrusion rod 301a to compress the fourth spring 301c and squeeze the mounting portion 201. As the smooth portion 302a rotates from half a circle to a full circle, the spiral stopper 301d moves away from the projection 301b, and the extrusion rod 301a is reset under the elastic force of the fourth spring 301c, making it convenient for the next use.

[0066] When in use, after the cylinder abnormal position is positioned, the iron block 203 that has lost the attraction of the magnetic ring 103 has a tendency to move upward under the elastic force of the first spring 202c. The pull rod 403d is manually toggled to move the iron block 203 upward, driving the telescopic rod 202b and the sliding block 202b-1 to pass smoothly to complete the reset of the part. While toggling the pull rod 403d, the U-shaped rod 402b is pressed down so that the support block 402e on one side of the U-shaped rod 402b is located below the blocking block 403b again. After releasing the pull rod 403d, the pull rod 403 d is reset under the action of torsion spring 403c, so that blocking block 403b blocks support block 402e again. Since the upper and lower threaded sleeves 201c-1 are separated at this time, there is no obstruction between them and threaded rod 302. During the downward movement of U-shaped rod 402b, rack 402d moves downward, driving gear 401c to rotate in the opposite direction, thereby causing rotating column 401a to rotate in the opposite direction and driving the upper and lower threaded sleeves 201c-1 to approach each other until they collide, and the upper and lower threaded sleeves 201c-1 are reset and overlapped. However, it cannot be guaranteed that the upper and lower threaded sleeves 201c-1 can be reassembled after reset. The half threaded sleeve 201c-1 just matches the thread on the threaded portion 302b of the threaded rod 302. On the contrary, the non-matching thread will affect the contact between the upper and lower half threaded sleeves 201c-1. Therefore, before pressing down the U-shaped rod 402b, it is necessary to first pull the mounting portion 201 along the direction of the scale rod 303 to the position of the smooth portion 302a of the threaded rod 302 without affecting the contact between the upper and lower half threaded sleeves 201c-1. Then, rotate the threaded rod 302. The rotation of the threaded rod 302 drives the spiral stopper 301d to rotate, and the spiral stopper 301 The rotation of d will gradually cooperate with the groove on one side of the protrusion 301b, thereby squeezing the protrusion 301b so that the protrusion 301b drives the squeezing rod 301a to compress the fourth spring 301c to slide relative to the connecting block 301. The movement of the squeezing rod 301a will squeeze the mounting part 201, so that the mounting part 201 has a tendency to move from the smooth part 302a of the threaded rod 302 to the threaded part 302b. At the same time, the threaded part 302b rotates, so that the mounting part 201 smoothly transitions from the smooth part 302a to the threaded part 302b, which is convenient for the next inspection process.

[0067] In summary, by using the smooth parts 302a provided at both ends of the threaded rod 302 and the threaded part 302b provided in the middle section, the semi-threaded sleeve 201c-1 can be re-engaged with the threaded part 302b after separation, which is convenient for the next inspection and solves the problem of resetting the semi-threaded sleeve 201c-1 after separation.

[0068] It is important to note that the construction and arrangement of the present application shown in a number of different exemplary embodiments are merely illustrative. Although only a few embodiments are described in detail in this disclosure, it should be readily understood by those who refer to this disclosure that many modifications are possible (e.g., the size, scale, structure, shape and proportion of various elements, as well as parameter values ​​(e.g., temperature, pressure, etc.), mounting arrangements, use of materials, color, directional changes, etc.) without departing substantially from the novel teachings and advantages of the subject matter described in this application. For example, an element shown as integrally formed may be composed of multiple parts or elements, the position of the element may be inverted or otherwise changed, and the nature or number or position of the discrete elements may be altered or changed. Therefore, all such modifications are intended to be included within the scope of the present invention. The order or sequence of any process or method steps may be changed or reordered according to alternative embodiments. In the claims, any "means plus function" clause is intended to cover the structure described herein that performs the function, and is not only structurally equivalent but also equivalent structures. Other replacements, modifications, changes, and omissions may be made in the design, operating conditions, and arrangement of the exemplary embodiments without departing from the scope of the present invention. Therefore, the invention is not limited to the specific embodiments, but extends to various modifications that still fall within the scope of the appended claims.

[0069] Additionally, in order to provide a concise description of exemplary embodiments, all features of an actual embodiment (i.e., those features that are not relevant to the best mode presently contemplated for carrying out the invention or those that are not relevant to implementing the invention) may not be described.

[0070] It will be appreciated that in the development of any actual embodiment, as in any engineering or design project, numerous implementation-specific decisions may be made. Such a development effort may be complex and time-consuming, but will, for those of ordinary skill having the benefit of this disclosure, be a routine undertaking of design, fabrication, and production without undue experimentation.

[0071] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A magnetic cylinder position detection device, characterized in that: include, The cylinder assembly (100) comprises a cylinder body (101), a piston rod (102) slidably connected to the interior of the cylinder body (101), a magnetic ring (103) arranged at the end of the piston rod (102), and a groove (104) formed from the side of the cylinder body (101) toward the piston rod (102); A detection assembly (200) is arranged on the side of the cylinder body (101), comprising a mounting portion (201) arranged on the side of the cylinder body (101) and close to the groove (104), a telescopic member (202) arranged inside the mounting portion (201), and an iron block (203) arranged at the end of the telescopic member (202) and matching the groove (104). The telescopic member (202) comprises a connecting rod (202a) arranged inside the mounting portion (201), a telescopic rod (202b) slidably connected to the inside of the connecting rod (202a) and connected to the iron block (203), and a first spring (202c) arranged between the connecting rod (202a) and the telescopic rod (202b). The invention also includes an inspection assembly (300) arranged on one side of the mounting portion (201), wherein the inspection assembly (300) includes connecting blocks (301) arranged on both sides of the cylinder body (101), a threaded rod (302) arranged between the connecting blocks (301) and connected to the mounting portion (201), and a scale rod (303) arranged between the connecting blocks (301) and slidably connected to the mounting portion (201). The threaded rod (302) includes smooth portions (302a) arranged at both ends and a threaded portion (302b) arranged in the middle section; An extrusion rod (301a) is slidably connected inside the connecting block (301), a convex block (301b) with a groove is provided at the end of the extrusion rod (301a), a fourth spring (301c) is connected between the convex block (301b) and the connecting block (301), and a spiral stopper (301d) matching the convex block (301b) is provided on the surface of the smooth portion (302a) close to the inside of the connecting block (301).

2. The magnetic cylinder position detection device according to claim 1, characterized in that: The mounting portion (201) comprises a mounting block (201a) slidably connected to the surface of the cylinder body (101), a fixed block (201b) arranged between the mounting block (201a) and the connecting rod (202a) and matched with the scale rod (303), and a movable part (201c) arranged between the fixed block (201b) and the mounting block (201a) and matched with the threaded rod (302).

3. The magnetic cylinder position detection device according to claim 2, characterized in that: The movable part (201c) comprises a semi-threaded sleeve (201c-1) arranged on the surface of the threaded rod (302) and distributed up and down, limit blocks (201c-2) arranged on both sides of the semi-threaded sleeve (201c-1), a second spring (201c-3) arranged between the limit blocks (201c-2) on the side close to the fixed block (201b), and a limit column (201c-4) arranged on the side of the limit block (201c-2) close to the installation block (201a).

4. The magnetic cylinder position detection device according to claim 3, characterized in that: A control component (400) is provided on one side of the mounting block (201a), and the control component (400) comprises a first transmission member (401) provided on the inner side of the mounting block (201a) and matched with the movable member (201c), a second transmission member (402) provided on one side of the mounting block (201a) and matched with the first transmission member (401), and a control member (403) provided on the other side of the mounting block (201a) and matched with the second transmission member (402).

5. The magnetic cylinder position detection device according to claim 4, characterized in that: The first transmission member (401) comprises a rotating column (401a) rotatably connected to the interior of the mounting block (201a), a track groove (401b) provided at one end of the rotating column (401a) and matching with the limiting column (201c-4), and a gear (401c) provided at the other end of the rotating column (401a); The track grooves (401b) are provided in two groups, and the two groups of track grooves (401b) extend from the inner side to the outer side of the rotating column (401a) in a curved track, and the two groups of track grooves (401b) are centrally symmetrically distributed relative to the axis of the rotating column (401a).

6. The magnetic cylinder position detection device according to claim 5, characterized in that: The second transmission member (402) comprises a first sliding groove (402a) arranged inside the mounting block (201a), a U-shaped rod (402b) slidably connected to the inside of the first sliding groove (402a), a third spring (402c) connected between the U-shaped rod (402b) and the first sliding groove (402a), a rack (402d) arranged on one side of the U-shaped rod (402b) and matching the gear (401c), and a support block (402e) arranged on the other side of the U-shaped rod (402b).

7. The magnetic cylinder position detection device according to claim 6, characterized in that: The control member (403) includes a fixed rod (403a) arranged on one side of the mounting block (201a), a blocking block (403b) rotatably connected to the surface of the fixed rod (403a) and matched with the supporting block (402e), a torsion spring (403c) arranged between the blocking block (403b) and the fixed rod (403a), and a pull rod (403d) obliquely arranged on one side of the blocking block (403b); A second sliding groove (202a-1) is provided on one side of the connecting rod (202a), and a sliding block (202b-1) is provided on the side of the telescopic rod (202b) and is slidably connected to the second sliding groove (202a-1) and matched with the pull rod (403d).

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