Mining contactor based on magnetic control mechanism

Abstract

The utility model provides a mining contactor based on a magnetic control mechanism, which comprises a contactor body, the contactor body is connected with a transverse frame beam, a pushing hole is formed in the transverse frame beam, a connecting rod is mounted in the pushing hole, one end of the connecting rod is connected with the contactor body, the other end of the connecting rod is arranged in a magnetic control switch, and the magnetic control switch is connected with the transverse frame beam. The transverse frame beam and the magnetic control switch are arranged in the base; the magnetic control mechanism with the semi-hard magnetic design is adopted as an operating mechanism, the strength and the hardness of the semi-hard magnetic design both meet million-level direct collision, and buffering is not needed; the control process of the magnetic control mechanism is simple, and cooperation among various devices is not needed; after the magnetic control mechanism is excited, the magnetic force is stably kept for a long time, the coil does not need long-term power supply, and the failure rate is reduced while power consumption is reduced; preferably, one set of magnetic control mechanism can drive a plurality of vacuum tubes through the cross beam, so that the product size can be reduced, and the requirement that the size of the switching device is smaller and smaller in a mining scene can be met.

Description

Technical Field

[0001] This application relates to the technical field of contactors, and particularly to a mine contactor based on a magnetic control mechanism. Background Art

[0002] A mine contactor is an electrical device used in special environments such as mines, mainly for controlling the on-off of circuits, having a high protection level and seismic resistance, and being able to operate stably in harsh working environments such as mines; a mine contactor usually consists of a contact chamber, a static contact, a moving contact rod, a moving contact, an air flow pressurizing device, a vacuum pumping device, a controller, a sensing unit, etc. For example, a mine contactor with the application number N202122144161.6 discloses a mine contactor, including a contact chamber, where a static contact is fixed at one end inside the contact chamber and a moving contact rod is slidably installed at the other end. One end of the moving contact rod extends into the contact chamber and is fixedly connected to a moving contact. An air flow pressurizing device and a vacuum pumping device are arranged on the outer side of the contact chamber. It also includes a controller and a sensing unit. The sensing unit senses the sliding of the moving contact rod, and the signal input of the sensing unit is connected to the controller. The controller is respectively connected to the air flow pressurizing device and the vacuum pumping device for control connection. This utility model improves the safety of use and is suitable for special working occasions such as underground mines.

[0003] However, the control of the mine contactor in this application depends on the control of the air flow pressurizing device and the vacuum pumping device by the sensing unit and the controller to achieve specific functions, and its control process is relatively complex; in addition, it cannot meet the requirement of the mine use scenario for the switchgear to be smaller and smaller in size. Moreover, due to the frequent operation of the mine contactor, compared with the switchgear in the ordinary distribution network, the action times requirement is as high as one million times, which puts extremely high requirements on aspects such as electronic components and mechanical running-in, and it is necessary to meet a relatively high service life. In recent years, magnetic control switches have received more and more attention and applications in the distribution network due to their rapidity and low power consumption, and their performance in terms of long life and low power consumption has been verified more and more. This application intends to solve the above technical problems through the cooperation of the magnetic control switch and the mine contactor. After detailed retrieval, no relevant materials have been found.

[0004] In summary, a new technical solution is needed to solve the above technical problems. Content of the Utility Model

[0005] This application provides a mine contactor based on a magnetic control mechanism, including a contactor body. The contactor body is connected to a cross beam. A pushing hole is arranged on the cross beam, and a connecting rod is installed in the pushing hole. One end of the connecting rod is connected to the contactor body, and the other end of the connecting rod is arranged inside a magnetic control switch. The magnetic control switch is connected to the cross beam, and the cross beam and the magnetic control switch are arranged inside a base.

[0006] As a preferred solution, the contactor body includes a vacuum tube, inside which a contact pressure spring is arranged. The lower end of the contact pressure spring is connected to an insulating rod, and the insulating rod is connected to one end of an insulating rod bracket. The other end of the insulating rod bracket is connected to one end of a connecting rod.

[0007] As a preferred solution, there are at least two contactor bodies. One end of the connecting rod is connected to the insulating rod bracket of one contactor body, and the insulating rod brackets of the remaining contactor bodies are connected to a fixed rod, and the fixed rod is connected to a cross beam.

[0008] As a preferred solution, an installation cushion block is arranged between the magnetron switch and the cross beam. A sliding groove is formed in the installation cushion block, and the diameter of the sliding groove is larger than that of the pushing hole; a clamping block is arranged on the outer side of the connecting rod, and the diameter of the clamping block is larger than that of the pushing hole, and the clamping block slides along the sliding groove.

[0009] As a preferred solution, the insulating rod bracket includes a bracket body, and installation grooves are formed at both ends of the bracket body. The insulating rod is installed in the upper installation groove, and the connecting rod or the fixed rod is installed in the lower installation groove.

[0010] As a preferred solution, installation internal threads are arranged in the lower installation groove, and installation external threads that are matched with the installation internal threads are arranged at the tops of the connecting rod and the fixed rod.

[0011] As a preferred solution, a fixing plate is arranged between the bottoms of adjacent contactor bodies. Guide posts are arranged on the fixing plate and are matched with guide holes arranged on the cross beam.

[0012] As a preferred solution, the magnetron switch includes a housing, inside which a static iron core is arranged. A moving iron core that is matched with the static iron core is arranged at the lower part of the static iron core. An installation hole is arranged in the middle of the static iron core and the moving iron core. A connecting rod is arranged in the installation hole. Fixed grooves are arranged on the outer sides of the installation holes. A tripping spring is arranged in the fixed grooves and is sleeved on the outer side of the connecting rod. The connecting rod is connected to the moving iron core through a fixing device. A coil is fixed inside the static iron core. An adsorption groove that is matched with the static iron core is arranged inside the moving iron core; both the static iron core and the moving iron core are made of semi-hard magnetic materials.

[0013] As a preferred solution, the fixing device includes a locking nut, which is arranged at the lower part of the moving iron core and is connected to the connecting rod. External threads that are matched with the locking nut are arranged on the connecting rod.

[0014] As a preferred solution, the outer shell includes a mounting plate which is connected to the static iron core. The lower part of the mounting plate is provided with an outer shell, and the bottom of the outer shell is provided with a bottom plate. The height inside the outer shell is greater than the overall height of the static iron core and the moving iron core. The mounting plate is provided with a top mounting hole for the connecting rod to pass through, and the bottom plate is respectively provided with bottom mounting holes for the lock nut and the overall movement of the connecting rod.

[0015] As a preferred solution, the mounting plate is connected to the cross beam.

[0016] As a preferred solution, different marks are set at the closing end and the opening end of the moving iron core, and a transparent window for observing different marks is arranged on the base.

[0017] As a preferred solution, the magnetic control switch is connected to the drive control circuit board.

[0018] As a preferred solution, a sensor bracket is installed inside the base, and a photoelectric sensor is installed on the sensor bracket. The photoelectric sensor is connected to the drive control circuit board.

[0019] The present application has the following beneficial effects:

[0020] 1. The magnetic control mechanism with semi-hard magnetic design is used as the operating mechanism. The strength and hardness of the semi-hard magnetic both meet the requirements of direct collision for millions of times without the need for buffering; and the control process of the magnetic control mechanism is simple and does not require the cooperation between multiple devices.

[0021] 2. After the magnetic control mechanism is excited, the magnetic force is stably maintained for a long time, and the coil does not need to be powered for a long time, which reduces the power consumption and is also beneficial to reducing the failure rate.

[0022] 3. One set of magnetic control mechanism can drive multiple vacuum tubes, such as three-phase vacuum tubes, etc. through the cross beam, which can reduce the product volume and meet the requirement of the mine use scenario for the smaller and smaller volume of the switchgear.

[0023] 4. The contact pressure spring is built into the vacuum tube, which further facilitates the miniaturization of the product. Description of the Drawings

[0024] Figure 1 is the structural schematic diagram of the present application;

[0025] Figure 2 is the cross-sectional view of the present application with 3 contactor bodies;

[0026] Figure 3 is the structural schematic diagram of the magnetic control switch of the present application;

[0027] Figure 4 is the front view of the present application;

[0028] Figure 5 is a cross-sectional view of the contactor body of this application;

[0029] Figure 6 is a schematic structural view of the insulating rod bracket of this application;

[0030] Reference numerals:

[0031] 1. Contactor body; 2. Cross beam; 3. Connecting rod; 4. Base; 5. Vacuum tube; 6. Vacuum tube protective sleeve; 7. Contact pressure spring; 8. Insulating rod; 9. Insulating rod bracket; 10. Installation cushion block; 11. Sliding groove; 12. Clamping block; 13. Bracket body; 14. Installation groove; 15. Installation internal thread; 16. Vacuum tube one; 17. Vacuum tube two; 18. Vacuum tube three; 19. Contact pressure spring one; 20. Contact pressure spring two; 21. Contact pressure spring three; 22. Insulating rod one; 23. Insulating rod two; 24. Insulating rod three; 25. Insulating rod bracket one; 26. Fixed rod one; 27. Fixed nut one; 28. Washer one; 29. Insulating rod bracket three; 30. Fixed rod three; 31. Fixed nut three; 32. Washer three; 33. Insulating rod bracket two; 34. Fixed plate; 35. Guide post; 36. Drive control circuit board; 37. Outer shell; 38. Static iron core; 39. Moving iron core; 40. Installation hole; 41. Fixed groove; 42. Opening spring; 43. Coil; 44. Adsorption groove; 45. Installation plate; 46. Outer shell; 47. Bottom plate; 48. Top installation hole; 49. Bottom installation hole; 50. Locking nut; 51. Sensor bracket; 52. Photoelectric sensor; 53. Transparent window. Detailed implementation manners

[0032] The following combines the attached drawings Figure 1 to the attached drawings Figure 6 to describe in detail the specific implementation manners of the present utility model. It should be noted that the specific implementation manners described herein are only for explaining and understanding the present utility model, and are not used to limit the present utility model.

[0033] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the attached drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present utility model.

[0034] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, the terms "installation", "connection", "linkage", and "provided with" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, and it can be the communication inside two components; for those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0035] Embodiment 1:

[0036] This embodiment provides a mining contactor based on a magnetic control mechanism, which includes a contactor body 1. The contactor body 1 is connected to a cross beam 2. A pushing hole is provided on the cross beam 2, and a connecting rod 3 is inserted into the pushing hole. One end of the connecting rod 3 is connected to the contactor body 1, and the other end of the connecting rod 3 is arranged inside a magnetic control switch. The magnetic control switch is connected to the cross beam 2. The cross beam 2 and the magnetic control switch are arranged inside a base 4. The magnetic control switch adopts a semi-hard magnetic switch. The setting of the magnetic control mechanism can stably maintain the magnetic force for a long time after magnetization. The coil 43 does not need to be powered for a long time, which reduces power consumption and is also beneficial to reducing the failure rate. The magnetic control switch uses a closing command to control the moving contact and the static contact inside the contactor body 1 to contact, realizing the connection of the circuit. The magnetic control switch uses a tripping command to control the moving contact and the static contact inside the contactor body 1 to separate, realizing the disconnection of the circuit.

[0037] This embodiment adopts a magnetic control mechanism with a semi-hard magnetic design as the operating mechanism. The strength and hardness of the semi-hard magnetism both meet the requirements of direct collisions at the million level and do not require buffering. Moreover, the control process of the magnetic control mechanism is simple and does not require the cooperation between multiple devices.

[0038] Embodiment 2:

[0039] This embodiment specifically describes the structure of the contactor body 1. Specifically:

[0040] The contactor body 1 includes a vacuum tube 5. A vacuum tube protective sleeve 6 is installed outside the vacuum tube 5. The vacuum tube protective sleeve 6 is used to protect the vacuum tube 5 and also plays a role in fixing the vacuum tube 5. A contact pressure spring 7 is arranged inside the vacuum tube 5. After being compressed, the contact pressure spring 7 provides the contact pressure required by the vacuum tube 5 to ensure good contact of the vacuum tube 5. And the contact pressure spring 7 is placed inside the vacuum tube 5, which is beneficial to the miniaturization of the product. The lower end of the contact pressure spring 7 is connected to an insulating rod 8. The insulating rod 8 is connected to one end of an insulating rod bracket 9. The other end of the insulating rod bracket 9 is connected to one end of the connecting rod 3. When the magnetic control switch closes, the connecting rod 3 moves upward to drive the insulating rod 8 to move upward. The moving contact and the static contact inside the vacuum tube 5 contact, and the contact pressure spring 7 continues to move upward, compressing the moving contact until the seamless closing process of the magnetic control switch is completed, realizing the connection of the circuit.

[0041] Preferably, in order to reduce the product volume and meet the requirement of the mine use scenario for the smaller and smaller volume of the switching electrical appliance, a set of magnetic control mechanisms can drive a plurality of vacuum tubes 5 through a cross beam. Specifically: the contactor body 1 includes at least two. One of the insulating rod brackets 9 of the contactor body 1 is connected to one end of the connecting rod 3, and the insulating rod brackets 9 of the remaining contactor bodies 1 are connected to the fixed rod. The fixed rod is connected to the cross beam 2. An installation cushion block 10 is arranged between the magnetic control switch and the cross beam 2. The magnetic control switch is respectively connected to the installation cushion block 10 and the cross beam 2 by means of screws. A sliding groove 11 is formed in the installation cushion block 10, and the diameter of the sliding groove 11 is larger than the diameter of the pushing hole. A clamping block 12 is arranged on the outer side of the connecting rod 3. The diameter of the clamping block 12 is larger than the diameter of the pushing hole and smaller than the width of the sliding groove 11. The clamping block 12 slides along the sliding groove 11. Preferably, the insulating rod bracket 9 includes a bracket body 13. Installation grooves 14 are formed at both ends of the bracket body 13. An insulating rod 8 is installed in the upper installation groove 14, and a connecting rod 3 or a fixed rod is installed in the lower installation groove 14. More preferably, an installation internal thread 15 is arranged in the lower installation groove 14, and installation external threads matching the installation internal thread 15 are arranged at the tops of the connecting rod 3 and the fixed rod. The connecting rod 3 and the installation groove 14, and the fixed rod and the installation groove 14 are connected by threads.

[0042] Such as Figure 2As shown in the figure, in this embodiment, taking a three-phase vacuum tube as an example, it includes vacuum tube one 16, vacuum tube two 17, and vacuum tube three 18. Inside vacuum tube one 16, vacuum tube two 17, and vacuum tube three 18, there are respectively contact pressure spring one 19, contact pressure spring two 20, and contact pressure spring three 21. Contact pressure spring one 19, contact pressure spring two 20, and contact pressure spring three 21 are respectively connected to insulating rod one 22, insulating rod two 23, and insulating rod three 24. Insulating rod one 22 is installed in the installation groove 14 at the upper end of insulating rod bracket one 25. Through connection methods commonly used in the prior art such as clamping and bonding, a fixing rod one 26 is threadedly connected in the installation groove 14 at the lower end of insulating rod bracket one 25. Fixing rod one 26 passes through cross beam 2. Fixing rod one 26 extends to the lower end of cross beam 2 and is provided with an external thread. An external thread is provided on the outside of the external thread, and a fixing nut one 27 is provided. Preferably, a washer one 28 is provided between fixing nut one 27 and the lower end face of cross beam 2, which can play roles such as dispersing pressure and increasing friction; Insulating rod three 24 is installed in the installation groove 14 at the upper end of insulating rod bracket three 29. A fixing rod three 30 is threadedly connected in the installation groove 14 at the lower end. Fixing rod three 30 passes through cross beam 2. Fixing rod three 30 extends to the lower end of cross beam 2 and is provided with an external thread. An external thread is provided on the outside of the external thread, and a fixing nut three 31 is provided. Preferably, a washer three 32 is provided between fixing nut three 31 and the lower end face of cross beam 2, which can play roles such as dispersing pressure and increasing friction; Insulating rod two 23 is installed in the installation groove 14 at the upper end of insulating rod bracket two 33. A connecting rod 3 is threadedly connected in the installation groove 14 at the lower end of insulating rod bracket two 33. Connecting rod 3 passes through the pushing hole of cross beam 2.

[0043] More preferably, in order to make the movement of cross beam 2 more convenient, a fixing plate 34 is provided between the bottoms of adjacent contactor bodies 1. A guiding column 35 is provided on fixing plate 34. Guiding column 35 cooperates with the guiding hole provided on cross beam 2.

[0044] When the magnetron switch closes, connecting rod 3 moves upward. Under the action of the clamping block 12, it pushes cross beam 2 to move upward. Cross beam 2 drives insulating rod one 22, insulating rod two 23, and insulating rod three 24 to move upward as a whole; When the magnetron switch opens, connecting rod 3 moves downward. Under the action of contact pressure spring one 19, contact pressure spring two 20, contact pressure spring three 21 and the self-gravity of the magnetron switch and cross beam 2, cross beam 2 moves downward. Cross beam 2 drives insulating rod one 22, insulating rod two 23, and insulating rod three 24 to move downward as a whole; This embodiment can simultaneously control the connection and disconnection of three vacuum tube circuits.

[0045] Embodiment Three:

[0046] This embodiment describes the structure of the magnetron switch. Specifically:

[0047] The magnetically controlled switch can be cylindrical as a whole. The magnetically controlled switch is connected to the drive control circuit board 36. Through the drive control circuit board 36, excitation and demagnetization of the magnetically controlled switch are provided. The drive control circuit board can adopt the drive control circuit board in the prior art, and this application does not modify it, and the specific model is not limited.

[0048] The magnetically controlled switch includes a housing 37. A static iron core 38 is provided inside the housing 37. A moving iron core 39 that cooperates with the lower part of the static iron core 38 is provided. The static iron core 38 and the moving iron core 39 can be cylindrical; mounting holes 40 are provided in the middle parts of the static iron core 38 and the moving iron core 39. A connecting rod 3 is provided in the mounting holes 40. The connecting rod 3 moves along the mounting holes 40 of the static iron core 38. More specifically, the connecting rod 3 drives the moving iron core 39 to move in the direction of approaching / leaving the static iron core 38; a fixing groove 41 is provided outside the mounting holes 40. A tripping spring 42 is provided in the fixing groove 41. The tripping spring 42 is sleeved outside the connecting rod 3, preferably clamped outside the connecting rod 3, and clamped through a snap ring or the like. The snap ring is fixedly connected to the connecting rod 3 and fixed by connection methods in the prior art such as welding and bonding; more specifically, the tripping spring 42 is fixed inside the static iron core 38, that is, the snap ring is fixed on the connecting rod 3 inside the static iron core 38. Both ends of the tripping spring 42 abut against the upper and lower parts of the fixing groove 41 to ensure that there is a certain pre-pressure even in the tripped state to overcome the contact reaction force and self-closing force of the vacuum tube 5; the connecting rod 3 is connected to the moving iron core 39 through a fixing device. A coil 43 is fixed inside the static iron core 38. An adsorption groove 44 that cooperates with the static iron core 38 is provided inside the moving iron core 39; both the static iron core 38 and the moving iron core 39 are made of semi-hard magnetic materials. The coil 43 is connected to the drive control circuit board 36; specifically, the housing 37 includes a mounting plate 45. The mounting plate 45 is connected to the static iron core 38. The mounting plate 45 is used to connect the whole magnetically controlled switch to the cross beam 2 by means such as screws. A lower part of the mounting plate 45 is provided with an outer shell 46. A bottom plate 47 is provided at the bottom of the outer shell 46. The height inside the outer shell 46 is greater than the overall height of the static iron core 38 and the moving iron core 39, so as to realize closing and tripping. A top mounting hole 48 for the connecting rod 3 to pass through is opened on the mounting plate 45. A bottom mounting hole 49 for the lock nut 50 and the whole connecting rod 3 to move is opened on the bottom plate 47.

[0049] Preferably, the fixing device includes a lock nut 50. The lock nut 50 is provided at the lower part of the moving iron core 39. The lock nut 50 is connected to the connecting rod 3. The connecting rod 3 is provided with an external thread that cooperates with the lock nut 50. The fixing of the connecting rod 3 and the moving iron core 39 is realized through this device.

[0050] Preferably, a sensor bracket 51 is installed inside the base 4, and a photoelectric sensor 52 is installed on the sensor bracket 51. The photoelectric sensor 52 is connected to the drive control circuit board 36, and the drive control circuit board 36 is used to supply power to the photoelectric sensor 52 and expand its active output to a dry contact output.

[0051] Different identifiers are set at the closing end and opening end of the moving iron core 39. For example, a green identifier is pasted or coated at the closing end (lower end) of the moving iron core 39, and a red identifier is pasted or coated at the opening end (upper end) of the moving iron core 39. A transparent window 53 for observing different identifiers is provided on the base 4. As the moving iron core 39 moves, the user can see different colors through the transparent window 53, see red during opening, and see green during closing, thus simply completing the state warning visible to the naked eye. The colors can be adjusted according to specific situations, not limited to the above, and the above is only for example. By using the method of transparent window opening and directly using the movement of the moving iron core 39 to provide a simple opening and closing state warning without adding any mechanical components, it is beneficial to long life and miniaturization of volume.

[0052] The drive control circuit board 36 controls the coil 43 to generate excitation and demagnetization, thereby controlling the opening and closing of the magnetic control switch. Specifically:

[0053] During closing: Under the action of the excitation current, the moving iron core 39 overcomes the elastic force of the opening spring 42 and moves in the direction close to the static iron core 38, so that the magnetic control switch is in the closed state; that is, the suction force formed between the static iron core 38 and the moving iron core 39 completes the adsorption of the moving iron core 39 and the static iron core 38 through the suction force, thereby realizing the closed state.

[0054] During opening, under the action of the demagnetization current, due to the elastic force of the opening spring 42 pushing and a part of the gravity of the moving iron core 39 itself, the moving iron core 39 moves in the direction away from the static iron core 38, so that the magnetic control switch is in the open state; that is, the suction force between the static iron core 38 and the moving iron core 39 disappears, and due to the pushing of the opening spring 42 and a part of the gravity of the moving iron core 39 itself, the separation of the moving iron core 39 and the static iron core 38 is realized, thereby realizing the open state.

[0055] The above process is based on the moving iron core 39 and the static iron core 38 being semi-hard magnetic controllable magnetic materials, so that the generation and disappearance of magnetism are controlled based on the excitation current and demagnetization current provided by the coil 43.

[0056] The specific working principle of this embodiment is:

[0057] In the opening state, there is no magnetic force between the moving iron core 39 and the static iron core 38. The opening spring 42 has a certain pre-compression, overcoming the sum of the contact reaction forces of the vacuum tube 5, and having a certain margin to meet the anti-impact performance. When the coil 43 is excited, a magnetic force is generated between the moving iron core 39 and the static iron core 38. The moving iron core 39 moves upward against the opening spring 42, further compressing the opening spring 42. The insulating rod 8 moves upward driven by the crossbeam frame 2 until the moving contact inside the vacuum tube 5 contacts the static contact. Then, the moving contact is further compressed through the contact pressure spring 7 until the moving iron core 39 and the static iron core 38 are attracted and closed seamlessly. When receiving an opening command, the coil 43 generates a reverse current to demagnetize, and the magnetic force between the moving iron core 39 and the static iron core 38 disappears. The moving iron core 39 moves downward rapidly under the action of the contact pressure spring 7 and the opening spring 42. The contact pressure spring 7 mainly provides an acceleration at the initial stage of opening. After the over-travel ends, the opening spring 42 continues to push the moving iron core 39 until it reaches the limit position.

[0058] In summary, due to the adoption of the above technical solutions, the present application has the following advantages:

[0059] 1. The magnetic control mechanism with semi-hard magnetic design is used as the operating mechanism. The strength and hardness of the semi-hard magnetism can meet direct collisions at the million-level, without the need for buffering. Moreover, the control process of the magnetic control mechanism is simple and does not require the cooperation between multiple devices.

[0060] 2. After the magnetic control mechanism is excited, the magnetic force is maintained stably for a long time, and the coil does not need to be powered continuously for a long time, which reduces power consumption and is also beneficial to reducing the failure rate.

[0061] 3. One set of magnetic control mechanism can drive multiple vacuum tubes through the crossbeam, such as three-phase vacuum tubes, etc., which can reduce the product volume and meet the requirement of the mining scenario for smaller and smaller switch electrical appliances.

[0062] 4. The contact pressure spring is built into the vacuum tube, which further facilitates the miniaturization of the product.

[0063] In the specification provided by the present utility model, a large number of specific details are described. However, it can be understood that the embodiments of the present utility model can be practiced without these specific details. In some instances, well-known methods, structures, and technologies are not shown in detail so as not to obscure the understanding of this specification.

[0064] Similarly, it should be understood that, in order to streamline the present disclosure and assist in understanding one or more of the various utility model aspects, in the above description of the exemplary embodiments of the present utility model, the various features of the present utility model are sometimes grouped together into a single embodiment, figure, or description thereof; however, the disclosed method should not be construed as reflecting an intention that the claimed present utility model requires more features than those expressly recited in each claim. Rather, as reflected in the following claims, the utility model aspects lie in less than all the features of the single embodiments disclosed previously. Thus, the claims following the detailed description are hereby expressly incorporated into the detailed description, where each claim itself serves as a separate embodiment of the present utility model.

[0065] In addition, those skilled in the art will appreciate that although some of the embodiments described herein include certain features included in other embodiments but not others, the combination of features of different embodiments is meant to be within the scope of the present utility model and forms different embodiments. For example, in the claims, any one of the claimed embodiments can be used in any combination.

[0066] It should be noted that the above embodiments illustrate rather than limit the present utility model, and those skilled in the art can design alternative embodiments without departing from the scope of the appended claims. In the claims, any reference signs placed between parentheses shall not be construed as limiting the claim.

[0067] Up to this point, those skilled in the art should recognize that although numerous exemplary embodiments of the present utility model have been shown and described in detail herein, many other variations or modifications that conform to the principles of the present utility model can still be directly determined or derived from the content disclosed in the present utility model without departing from the spirit and scope of the present utility model. Therefore, the scope of the present utility model should be understood and determined to cover all such other variations or modifications.

[0068] The preferred embodiments of the present application have been described in detail above in conjunction with the accompanying drawings. However, the present application is not limited to the specific details in the above embodiments. Within the scope of the technical concept of the present application, various simple variations can be made to the technical solutions of the present application, and these simple variations all fall within the protection scope of the present application.

[0069] In addition, it should be noted that, in the case of no contradiction, the various specific technical features described in the above specific embodiments can be combined in any appropriate manner. To avoid unnecessary repetition, various possible combination methods of the present application will not be described separately.

[0070] In addition, any combination can be made among various different embodiments of the present application as long as it does not violate the idea of the present application, and the same should also be regarded as the content disclosed in the present application.

Claims

1. A mining contactor based on a magnetic control mechanism, comprising a contactor body (1), characterized in that: The contactor body (1) is connected to the cross beam (2), a push hole is provided on the cross beam (2), a connecting rod (3) is installed in the push hole, one end of the connecting rod (3) is connected to the contactor body (1), the other end of the connecting rod (3) is arranged in a magnetic control switch, the magnetic control switch is connected to the cross beam (2), and the cross beam (2) and the magnetic control switch are arranged inside the base (4).

2. The mining contactor based on the magnetic control mechanism according to claim 1 is characterized in that: The contactor body (1) comprises a vacuum tube (5), a contact pressure spring (7) is arranged inside the vacuum tube (5), the lower end of the contact pressure spring (7) is connected to an insulating rod (8), the insulating rod (8) is connected to one end of an insulating rod bracket (9), and the other end of the insulating rod bracket (9) is connected to one end of a connecting rod (3).

3. The mining contactor based on the magnetic control mechanism according to claim 2 is characterized in that: The contactor body (1) comprises at least two, wherein the insulating rod bracket (9) of one of the contactor bodies (1) is connected to one end of the connecting rod (3), and the insulating rod bracket (9) of the other contactor bodies (1) is connected to a fixed rod, and the fixed rod is connected to the cross beam (2).

4. The mining contactor based on the magnetic control mechanism according to claim 3 is characterized in that: A mounting pad (10) is arranged between the magnetic switch and the cross beam (2), and a sliding groove (11) is provided on the mounting pad (10), and the diameter of the sliding groove (11) is larger than the diameter of the pushing hole; a clamping block (12) is arranged on the outer side of the connecting rod (3), and the diameter of the clamping block (12) is larger than the diameter of the pushing hole, and the clamping block (12) slides along the sliding groove (11).

5. The mining contactor based on the magnetic control mechanism according to claim 3, characterized in that: A fixing plate (34) is arranged between the bottoms of adjacent contactor bodies (1), a guide column (35) is arranged on the fixing plate (34), and the guide column (35) cooperates with a guide hole arranged on the cross beam (2).

6. The mining contactor based on the magnetic control mechanism according to claim 1, characterized in that: The magnetically controlled switch comprises a shell (37), wherein a static iron core (38) is arranged in the shell (37), wherein a movable iron core (39) cooperating with the static iron core (38) is arranged at the lower part of the static iron core (38), wherein mounting holes (40) are arranged in the middle parts of the static iron core (38) and the movable iron core (39), wherein a connecting rod (3) is arranged in the mounting hole (40), wherein a fixing groove (41) is arranged on the outer side of the mounting hole (40), wherein a trip spring (42) is arranged in the fixing groove (41), wherein the trip spring (42) is sleeved on the outer side of the connecting rod (3), wherein the connecting rod (3) is connected to the movable iron core (39) via a fixing device, wherein a coil (43) is fixed inside the static iron core (38), wherein an adsorption groove (44) cooperating with the static iron core (38) is arranged inside the movable iron core (39); wherein both the static iron core (38) and the movable iron core (39) are made of semi-hard magnetic material.

7. The mining contactor based on the magnetic control mechanism according to claim 6, characterized in that: The fixing device comprises a locking nut (50), wherein the locking nut (50) is arranged at the lower part of the moving iron core (39), the locking nut (50) is connected to the connecting rod (3), and the connecting rod (3) is provided with an external thread matching the locking nut (50).

8. The mining contactor based on the magnetic control mechanism according to claim 7, characterized in that: The outer shell (37) includes a mounting plate (45), the mounting plate (45) is connected to the static iron core (38), an outer shell (46) is arranged at the lower part of the mounting plate (45), a bottom plate (47) is arranged at the bottom of the outer shell (46), the height inside the outer shell (46) is greater than the overall height of the static iron core (38) and the moving iron core (39), a top mounting hole (48) for the connecting rod (3) to pass through is provided on the mounting plate (45), and a bottom mounting hole (49) for the connecting rod (3) to move as a whole is provided on the bottom plate (47).

9. The mining contactor based on the magnetic control mechanism according to claim 6, characterized in that: The closing end and the opening end of the moving iron core (39) are provided with different markings, and the base (4) is provided with a transparent window (53) for observing the different markings.

10. The mining contactor based on the magnetic control mechanism according to claim 1, characterized in that: The magnetically controlled switch is connected to a drive control circuit board (36).

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