Reset magnetic rod for indicator

Abstract

The utility model relates to the technical field of dynamometers, in particular to a reset magnetic rod for a dynamometer, which mainly comprises a cap and a telescopic sleeve rod structure composed of a first rod body and a second rod body, and a locking mechanism is arranged between the first rod body and the second rod body. The magnet piece is connected to the end part of the second rod body through a compressible flexible hose; the magnet piece provides a reset magnetic field for a magnetic control reset switch of the indicator. According to the reset magnetic rod in the scheme, under the condition that the working state of the indicator is not predicted, the indicator in the running state can be reset in a non-contact mode in a safe mode, starting and stopping operation does not need to be conducted on an oil pumping unit, and the defects existing in the prior art are overcome; besides, the magnetic rod is designed in a retractable mode, and the magnet piece can be stored in the first rod body under the cooperation of the compressible flexible hose, so that the magnetic rod is small in size, convenient to carry and use and high in adaptability, and has certain market popularization value and economic benefits.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of dynamometer, specifically designs a reset magnetic force pole for dynamometer. BACKGROUND

[0002] Dynamometer is the instrument that integrates load measurement, displacement measurement and data transmission, can automatically collect the load of pumping unit, stroke, and calculate the work graph data, and can realize remote work graph monitoring independently or by cooperating with field RTU.

[0003] In daily work, the staff often needs to reset the dynamometer to meet the needs of testing or maintenance, the traditional reset mode of the dynamometer includes manual reset, software reset and power reset, for manual reset and power reset, it needs to be reset by plugging in or out the battery or operating the switch button, since the installation position of the dynamometer is at the pumping unit horse head beam clamp, the above reset operation cannot be carried out in the moving state, the pumping unit needs to be stopped for reset, however, in the oil field operation area, the safety operation procedures and precautions must be strictly followed when operating the pumping unit and other large mechanical equipment, the staff of party A needs to be on-site monitoring and report to the back-end monitoring center, this process is not only cumbersome, but also delays the processing time, in addition, frequent start and stop of such large mechanical equipment may cause great safety hazards, for software reset, although it can solve the problem of frequent start and stop of the pumping unit for manual reset and power reset, but it requires high technical requirements for the personnel and depends on the stability of the software, therefore, the reset of the in-use dynamometer is a seemingly simple and basic operation, but the actual operation has great safety hazards and workload.

[0004] At present, the dynamometer on the market starts to use magnetic control reset switch such as dry reed tube in the circuit board, and the reset operation of the special equipment is realized by non-contact reset switch, however, for the dynamometer with magnetic control reset switch, the existing method still uses the method of stopping the pumping unit to reset by magnet, that is, there is still no good solution for how to reset the dynamometer with magnetic control reset switch without stopping.

[0005] In view of the above problems, the utility model patent provides a portable and telescopic reset special magnetic force pole for dynamometer, which realizes non-contact reset operation of the dynamometer by a relatively safe way without interfering with the working state of the dynamometer. UTILITY MODEL CONTENTS

[0006] The utility model aims at providing a reset magnetic force pole for dynamometer, which can realize non-contact reset operation of the dynamometer by a relatively safe way without interfering with the working state of the dynamometer.

[0007] In order to achieve the above object, the utility model provides the following technical scheme:

[0008] A reset magnetic force rod for a dynamometer, the reset magnetic force rod for a dynamometer, including first rod body, second rod body, magnet piece cap, the first rod body is the sleeve structure, the second rod body can be slidably nested in the first rod body and jointly constitutes telescopic sleeve rod structure, simultaneously, locking mechanism is equipped between the first rod body and the second rod body, the magnet piece is connected in the second rod body extension to the first rod body outside one end through compressible flexible hose, when the cap covers, through the compression of flexible hose can store the magnet piece into the first rod body.

[0009] As a preferred scheme of the application, the locking mechanism comprises a lock hole and a lock block, the lock hole is arranged at a position close to the top end of the first rod body, the lock block is arranged at one end of the second rod body located in the first rod body, and the arrangement position of the lock block on the second rod body corresponds to the lock hole, the lock block can be automatically clamped into the lock hole to realize locking, and can be separated from the lock hole under the action of external force to realize unlocking.

[0010] As a preferred scheme of the application, the lock block comprises a connecting rod and a ball, and a mounting groove is arranged on the second rod body, the connecting rod is fixed in the mounting groove to form an elastic connecting rod by a torsional spring, and the ball is rotatably connected with the end of the connecting rod.

[0011] As a preferred scheme of the application, a track groove extending along the length direction of the first rod body is arranged on the inner wall of the first rod body, and the ball is limited in the track groove and can roll relative to the track groove.

[0012] As a preferred scheme of the application, the track groove is arranged on the inner wall of the first rod body below the lock hole, and the track groove is through the lock hole.

[0013] As a preferred scheme of the application, after the cap is covered, the cap can cover the lock hole on the first rod body.

[0014] As a preferred scheme of the application, the cap is connected with the end of the first rod body in a screwing or clamping mode.

[0015] As a preferred scheme of the application, the magnet piece is a cylindrical magnet prepared from ferroboron material, and a rust-proof coating is coated on the outside of the cylindrical magnet.

[0016] As a preferred scheme of the application, the bottom of the first rod body is provided with an ergonomic handle.

[0017] Compared with the prior art, the utility model has the beneficial effects that:

[0018] This solution designs a reset magnetic rod adapted to a dynamometer with a magnetically controlled switch. The magnetic rod mainly comprises a cap and a telescopic sleeve structure consisting of a first rod body and a second rod body, with a locking mechanism between the first and second rod bodies. It also includes a magnet connected to the end of the second rod body via a compressible flexible hose. The magnet provides a reset magnetic field for the dynamometer's magnetically controlled reset switch. With the cooperation of the telescopic sleeve and the locking mechanism, the magnet travels a certain distance with the running dynamometer until the magnetically controlled switch is reset. This reset magnetic rod allows for a safe, non-contact reset of the running dynamometer without interfering with its operation, eliminating the need to start or stop the pumping unit. This not only enables rapid reset of the dynamometer but also avoids the drawbacks of starting and stopping the pumping unit, addressing the shortcomings of existing technologies. Furthermore, the magnetic rod features a retractable design, and the magnet can be housed within the first rod body using a compressible flexible hose, making it small, portable, easy to use, and highly adaptable, possessing significant market potential and economic benefits.

[0019] Instruction manual illustrations

[0020] Figure 1 A schematic diagram of the overall structure of the reset magnetic rod for the dynamometer provided by this utility model.

[0021] Figure 2 This is a partial cross-sectional view of the retracted reset magnetic rod of the dynamometer provided by this utility model.

[0022] Figure 3 Provided by this utility model Figure 2 A magnified view of a portion of point A in the middle.

[0023] Figure 4 Provided by this utility model Figure 2 A schematic diagram of the cross-sectional structure along the AA direction.

[0024] Figure 5 Provided by this utility model Figure 4 A magnified view of a portion of point B in the middle.

[0025] Figure 6 A front view diagram of the locking block provided by this utility model, which is installed at the bottom of the second rod.

[0026] Figure 7 A schematic diagram of the overall structure of the locking block provided by this utility model, which is installed at the bottom of the second rod.

[0027] Figure 8 Provided by this utility model Figure 7 A magnified view of a portion of point C. Attached Figure Description

[0028] 1 is the first rod; 2 is the second rod; 3 is a magnet; 4 is a flexible hose; 5 is a cap; 6 is a handle; 7 is a locking mechanism; 71 is a lock hole; 72 is a lock block; 721 is a connecting rod; 722 is a ball bearing; 8 is a track groove; 9 is a mounting groove. Detailed Implementation

[0029] The present invention will be further described in detail below with reference to specific embodiments and accompanying drawings. It should be emphasized that the following description is merely exemplary and not intended to limit the scope and application of the present invention.

[0030] like Figure 1 As shown, this embodiment provides a reset magnetic rod for a dynamometer. The reset magnetic rod includes a first rod body 1, a second rod body 2, a magnet 3, and a cap 5. The first rod body 1 is a sleeve structure. The second rod body 2 is slidably nested inside the first rod body 1, together forming a telescopic sleeve structure. A locking mechanism 7 is provided between the first rod body 1 and the second rod body 2. After the second rod body 2 extends out of the first rod body 1 to a designated position, it is locked by the locking mechanism 7. The locking mechanism 7 can improve the stability of the connection between the first rod body 1 and the second rod body 2. The magnet 3 is connected to the end of the second rod body 2 through a compressible flexible hose 4. When the cap 5 is closed, the magnet 3 can be stored inside the first rod body 1 by compressing the flexible hose 4. Storing the magnet 3 inside the first rod body 1 helps to avoid damage to it and prevents it from contacting and adsorbing with metal objects when placed.

[0031] Understandably, the flexible hose 4 should have connectors at both ends that connect to the magnet 3 and the first rod 1. At the same time, the length of the flexible hose 4 should be 2-5cm to meet the requirements for supporting and pushing out the magnet 3. Using the flexible hose 4 can effectively improve the flexibility of the magnet 3 relative to the end of the telescopic sleeve, so as to buffer the impact force generated by the magnet 3 accidentally contacting the indicator and improve the safety of use. On the other hand, it provides a restoring force for the magnet 3 stored in the first rod 1, so as to avoid the phenomenon that the magnet 3 is not easy to remove after being stored in the first rod 1.

[0032] The magnet 3 is used to provide a reset magnetic field to the magnetic reset switch of the dynamometer in operation. It is understood that the magnet 3 should meet the magnetic field strength required by the magnetic reset switch. In this embodiment, the magnet 3 is preferably a cylindrical magnet made of neodymium iron boron material and is coated with an anti-rust coating on the outside of the cylindrical magnet. Of course, in other embodiments of this application, the magnet 3 can also be set as a ring-shaped or block-shaped structure.

[0033] In this embodiment, the first rod body 1 and the second rod body 2 are preferably hollow sleeves made of lightweight non-metallic materials, which can reduce the weight of the entire magnetic rod, achieve lightweight design, and facilitate carrying and operation. It can be understood that the pipe diameter of the second rod body 2 should be smaller than that of the first rod body 1. In order to facilitate use, an ergonomic handle 6 is provided at the bottom of the first rod body 1.

[0034] In this embodiment, the rod diameter of the second rod body 2 is smaller than that of the first rod body 1, and the second rod body 2 can be retracted into the first rod body 1. In order to facilitate the extension of the second rod body 2, it is preferred that at least the magnet piece 3 is located outside the first rod body 1 after retraction.

[0035] Specifically in use:

[0036] Open the cap 5, the magnet piece 3 is ejected from the first rod body 1 under the action of the flexible hose 4, then the second rod body 2 is extended from the first rod body 1 and locked by the locking mechanism; the magnetic rod is close to the dynamometer, the magnet piece 3 can provide a reset magnetic field for the magnetic control reset switch of the dynamometer, and under the cooperation of the telescopic sleeve rod, it runs a certain stroke with the running state of the dynamometer until the magnetic control switch is reset. It should be noted that the magnetic control reset switch used by the dynamometer is usually a dry reed, which will act when an external magnetic field is close, thereby achieving reset. That is, the magnetic control reset switch can quickly reset after sensing the magnetic field. Therefore, when the magnet piece 3 is close to the magnetic control reset switch of the dynamometer, it can quickly trigger the magnetic control reset switch to act within a limited stroke. It can be seen that the reset magnetic rod can reset the running dynamometer in a non-contact manner in a relatively safe manner without interfering with the working state of the dynamometer. It is not necessary to start and stop the operation of the pumping unit. In this way, not only can the dynamometer be quickly reset, but also the disadvantages of starting and stopping the pumping unit can be avoided, solving the problems existing in the prior art.

[0037] After resetting, the flexible hose 4 is compressed again to retract the magnet piece 3 into the first rod body 1 through the cap 5. It can be seen that the magnetic rod not only has a telescopic design, but also can accommodate the magnet piece 3 in the first rod body 1 with the cooperation of the compressible flexible hose 4, making it small in size, easy to carry, convenient to use, and highly adaptable. It has certain market promotion value and economic benefits.

[0038] The locking mechanism 7 includes a lock hole 71 and a lock block 72. The lock hole 71 is provided at a position 2-4 cm from the top end of the first rod body 1. The lock hole 71 is a through hole penetrating the side wall of the first rod body 1, as shown in Figures 2-3 The lock block 72 is provided at one end of the second rod body 2 located in the first rod body 1, and the setting position of the lock block 72 on the second rod body 2 corresponds to the lock hole 71, as shown in Figures 6-8As shown, it can be understood that the hole diameter of the lock hole 71 should be slightly larger than the lock block 72; in this embodiment, the number of lock blocks 72 corresponds to the lock holes 71, and in this embodiment, the lock block 72 and the lock hole 71 each contain two symmetrically arranged groups; when the second rod body 2 is stretched to a specified position relative to the first rod body 1, the lock block 72 can be automatically clamped into the lock hole 71 to achieve locking, and the lock block 72 can be separated from the lock hole 71 under the extrusion of external force to achieve unlocking; it can be understood that the lock block 72 should be a spring structure, which is limited in the inner cavity of the first rod body 1 in a certain deformation state, which is conducive to automatic locking; it can be seen that the locking mechanism 7 composed of the lock block 72 and the lock hole 71 not only can lock the two rod bodies relative to each other, improve the stability of the rod body after stretching, and can avoid the second rod body 2 from being separated from the first rod body 1, thereby achieving the limiting of the second rod body 2.

[0039] In this embodiment, it is preferred that the second rod body 2 can rotate relative to the first rod body 1, and after the second rod body 2 is moved to a specified position relative to the first rod body 1, the second rod body 2 can be rotated to drive the lock block 72 to be aligned with the lock hole 71 to lock, extrude the lock block 72 to shrink it to separate it from the lock hole 71, and then rotate the second rod body 2 again to misalign the lock block 72 with the lock hole 71 to store the second rod body 2 in the first rod body 1.

[0040] As shown, Figures 7-8 The structure of the lock block 72 provided in this embodiment is shown, the lock block 72 includes a connecting rod 721 and a ball 722, and a mounting groove 9 is provided on the second rod body 2, the connecting rod 721 is fixed in the mounting groove 9 by a torsional spring to form an elastic connecting rod, and the ball 722 is connected with the end of the connecting rod 721 by a bearing to roll; it can be seen that the lock block 72 of this scheme is an elastic lock block 72 composed of a connecting rod 721 and a ball 722, which can be shrunk into the mounting groove 9 by overcoming the elastic force of the torsional spring under the extrusion of external force; the use of the ball 722 as the lock block in this embodiment can not only significantly reduce the frictional resistance between it and the inner wall of the first rod body 1, but also facilitate the extension and contraction in the lock hole 71.

[0041] As a preferred embodiment of the present application, a track groove 8 extending along the length direction of the inner wall of the first rod body 1 is provided, as shown, Figures 3-5 The ball 722 is limited in the track groove 8 and can roll relative to the track groove 8; by providing the track groove 8 on the inner wall of the first rod body 1, on the one hand, the ball 722 and the track groove 8 can be matched to limit the second rod body 2 in the first rod body 1, ensuring the stability of the extension and contraction of the second rod body 2, and on the other hand, the extrusion force of the first rod body 1 on the connecting rod 721 can be reduced, thereby reducing the risk of fatigue and damage of the torsional spring and improving the sensitivity of the locking mechanism 7.

[0042] The track groove 8 is arranged on the inner wall of the first rod body 1 below the lock hole 71, and the track groove 8 is through with the lock hole 71. The structure is beneficial to the locking and disengaging of the lock block 72 and the lock hole 71, and can avoid the lock block 72 from slipping and causing the second rod body 2 and the first rod body 1 to separate.

[0043] As a specific embodiment of the present application, the cap 5 is connected with the end of the first rod body 1 in a screwing or clamping manner. In the embodiment, the screwing is preferred. Specifically, an external thread is arranged at the upper end of the lock hole 71 of the first rod body 1, and an internal thread is arranged on the inner wall of the cap 5 near the upper middle part. The connection between the cap 5 and the end of the first rod body 1 can be realized through the cooperation of the internal thread and the external thread. After the cap 5 is closed, the lower edge of the cap 5 can cover the lock hole 71 on the first rod body 1, so that foreign matters cannot block the lock hole 71.

[0044] The above is only a preferred specific embodiment of the present application, but the protection scope of the present application is not limited to this. Any person skilled in the art can make equivalent replacement or change according to the technical scheme and the inventive concept of the present application within the technical range disclosed by the present application, which should be covered in the protection scope of the present application.

Claims

1. A reset magnetic rod for a dynamometer, characterized in that, The device includes a first rod (1), a second rod (2), a magnet (3), and a cap (5). The first rod (1) is a sleeve structure. The second rod (2) is slidably nested inside the first rod (1) and together they form a telescopic sleeve structure. At the same time, a locking mechanism (7) is provided between the first rod (1) and the second rod (2). The magnet (3) is connected to one end of the second rod (2) extending to the outside of the first rod (1) through a compressible flexible hose (4). When the cap (5) is closed, the magnet (3) can be stored inside the first rod (1) by compressing the flexible hose (4).

2. The reset magnetic rod for the dynamometer according to claim 1, characterized in that, The locking mechanism (7) includes a lock hole (71) and a lock block (72). The lock hole (71) is located near the top of the first rod (1). The lock block (72) is located at one end of the second rod (2) inside the first rod (1). The lock block (72) is positioned on the second rod (2) in a manner corresponding to the lock hole (71). The lock block (72) can automatically engage with the lock hole (71) to achieve locking, and can disengage from the lock hole (71) under external force to achieve unlocking.

3. The reset magnetic rod for the dynamometer according to claim 2, characterized in that, The locking block (72) includes a connecting rod (721) and a ball bearing (722), and a mounting groove (9) is provided on the second rod body (2). The connecting rod (721) is fixed in the mounting groove (9) by a torsion spring to form an elastic connecting rod. The ball bearing (722) is rotatably connected to the end of the connecting rod (721).

4. The reset magnetic rod for the dynamometer according to claim 3, characterized in that, The inner wall of the first rod (1) is provided with a track groove (8) extending along its length direction, and the ball (722) is confined within the track groove (8) and can roll relative to the track groove (8).

5. The reset magnetic rod for the dynamometer according to claim 4, characterized in that, The track groove (8) is disposed on the inner wall of the first rod (1) below the lock hole (71), and the track groove (8) is in communication with the lock hole (71).

6. The reset magnetic rod for the dynamometer according to claim 2, characterized in that, After the cap (5) is closed, the cap (5) can cover the lock hole (71) on the first rod (1).

7. The reset magnetic rod for the dynamometer according to claim 1, characterized in that, The cap (5) is connected to the end of the first rod (1) by screwing or snapping.

8. The reset magnetic rod for the dynamometer according to claim 1, characterized in that, The magnet (3) is a cylindrical magnet made of neodymium iron boron material, and the outside of the cylindrical magnet is coated with an anti-rust coating.

9. The reset magnetic rod for the dynamometer according to claim 1, characterized in that, The bottom of the first rod (1) is provided with an ergonomic handle (6).

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