CN115506757B

CN115506757B - Pumping unit automatic control equipment convenient for flexible switching of long-distance and short-distance control

Info

Publication number: CN115506757B
Application number: CN202211462752.0A
Authority: CN
Inventors: 朱长福; 梁力; 黄善南
Original assignee: Qinhuangdao Meicheng Runqi Low Carbon Industry Development Co ltd
Current assignee: Qinhuangdao Meicheng Low Carbon Industry Development Co ltd
Priority date: 2022-11-22
Filing date: 2022-11-22
Publication date: 2023-03-24
Anticipated expiration: 2042-11-22
Also published as: CN115506757A

Abstract

The invention discloses a pumping unit automatic control device convenient for flexible switching of remote control and near control, which is applied to the field of pumping unit automatic control.

Description

Pumping unit automatic control equipment convenient for flexible switching of long-distance and short-distance control

Technical Field

The invention relates to the field of automatic control of pumping units, in particular to automatic control equipment of a pumping unit, which is convenient for flexibly switching remote and near control.

Background

The automatic control equipment of the oil pumping unit can realize automatic control of the running state of the alternating current motor of the oil pumping unit according to the given state. The automatic control equipment of the oil pumping unit is local use type automatic control equipment only facing a local oil pumping unit. The automatic control equipment of the oil pumping unit is remote-use type automatic control equipment only facing remote measurement and control. The automatic control equipment of the oil pumping unit can be used locally and remotely, and is a local and remote dual-purpose automatic control equipment.

Traditional beam-pumping unit often adopts simple switch, simple pilot lamp etc. as the control of operation and the demonstration of running state in short range control's autonomous device, and simple pilot lamp is generally small however, and under the better condition of light, its difference of lighting and extinguishing is less relatively, leads to the staff to judge the running state of beam-pumping unit by mistake easily, leads to wrong the pressing switch when the state is unqualified, is unfavorable for the steady operation of beam-pumping unit.

Disclosure of Invention

The invention aims to improve the accuracy of state display of the pumping unit, and compared with the prior art, the invention provides the pumping unit automatic control equipment which is convenient for flexibly switching the remote control and the near control, a control box and a remote control terminal are in signal connection with the pumping unit, the front end of the control box is provided with a touch display screen, a control panel in signal connection with the pumping unit is arranged in the control box, the control box is also provided with a plurality of signal lamps in signal connection with the control panel, a two-state display string is arranged on the control box and positioned below the signal lamps, the control box is electrically connected with a control switch through a lead, and the control switch is in signal connection with the control panel; the two-state display string comprises a transverse protective shell clamped on the control box, a plurality of longitudinal protective shells fixedly connected to the outer end of the transverse protective shell and a conductive string located in the transverse protective shell, the conductive string is connected in series on a wire, the end part of each longitudinal protective shell is covered outside a signal lamp, the end part of each signal lamp extends to the longitudinal protective shell, a light sensor is further installed on the control box and located in the longitudinal protective shell, and the light sensor is connected with a control panel through signals.

Show the setting of cluster through two states, the beam-pumping unit state that corresponds when the signal lamp is normal when, the electrically conductive cluster that corresponds can spontaneous switch on two busbar, correspond the state when all signal lamps are all normal when, all electrically conductive clusters switch on the wire simultaneously this moment, and then make control switch circular telegram, the steerable beam-pumping unit of control switch carries out work this moment, compare in prior art, it can circular telegram only when the beam-pumping unit state is normal to guarantee effectively that control switch, thereby control beam-pumping unit carries out relevant work, effectively avoid the condition of maloperation to take place, effectively guarantee the stability of beam-pumping unit work, in addition, when electrically conductive cluster switches on the busbar, the helping of correspondence shows the strip and can receive the adsorption affinity and be close to each other, make two help and show the strip and present continuous color strip state, can effectively assist and show the strip and normally show the beam-pumping unit state.

Further, violently the protective housing is the transparent insulation system of stereoplasm, and the staff of being convenient for observes the condition of helping showing strip department color bar, indulges the protective housing and is non-transparent stereoplasm structure, can play the shading effect, makes light when light sensor only can receive the signal lamp and is lighted, and then accuracy when effectively guaranteeing electrically conductive cluster and switching on the busbar.

Further, electrically conductive cluster includes many pairs of limiting plates, the electric shock strip that corresponds respectively with many pairs of limiting plates and the busbar of fixed connection between adjacent two pairs of limiting plates, be connected with the busbar between marginalized two pairs of limiting plates and the wire equally, indulge protective housing middle part fixedly connected with mounting panel, electric putter is installed to the one end that the mounting panel is close to horizontal protective housing, electric putter extension end and electric shock strip tip fixed connection, and electric putter and control panel signal connection, make two adjacent busbars present the state of establishing ties, only when all electrically conductive clusters all imbed in the corresponding limiting plate, just enable that the wire is whole to be switched on, make the control switch circular telegram.

Further, the fixed end that runs through corresponding limiting plate of conducting strip and limiting plate connection's tip and with limiting plate surface parallel and level, make its be difficult for influencing the normal removal of electric shock strip, be difficult for simultaneously influencing the conducting strip on the electric shock strip and the contact of conducting strip tip, effectively guarantee that the electrically conductive cluster can switch on two adjacent conducting strips smoothly.

Further, the electric shock strip comprises a connecting rod and an abnormal plate fixedly connected to the end of the connecting rod, the position of the abnormal plate corresponds to the conductive strip, a conductive sheet and a magnetic sheet are fixedly inlaid at the left end and the right end of the abnormal plate respectively, and the conductive sheet is located on one side close to the electric push rod.

Further, the limiting plate is made for stereoplasm insulating material, electric putter's flexible scope is distance between conducting strip and the magnetic sheet central point, effectively guarantee to touch the electric strip when extension to the maximum range, the busbar just corresponds with the conducting strip, the magnetic sheet just corresponds with helping showing a mouthful portion this moment, and then when effectively guaranteeing that two adjacent busbars are switched on, the magnetic sheet just produces the adsorption affinity to from the cluster, make adjacent two be close to each other from the free end of cluster, make originally two colour bars that are the disconnection can present continuous state, and then realize playing certain auxiliary action to signal lamp display beam-pumping unit state.

Furthermore, the outer end that every group limiting plate kept away from each other is all fixed connection and helps showing the strip, and adjacent two help showing the tip that the strip is close to each other and contact each other, and help showing the strip and be located the one side that the longitudinal protection shell was kept away from to electrically conductive cluster.

Further, connecting rod one end is located indulges the protective housing, and the connecting rod other end is located violently the protective housing, and when conducting strip switched on with the busbar, the magnetic sheet with help the tip coincidence of showing the strip on the limiting plate, when making to switch on, the magnetic sheet just can adsorb and make it be close to towards the limiting plate from the end of a string, and then makes adjacent two change relatively great from a string by the continuous state of disconnection orientation, makes the front and back change, and is better to the auxiliary action that shows the beam-pumping unit state.

Furthermore, help and show that the strip slope sets up, and it is low to help the one end that shows that the strip is located corresponding the limiting plate, helps the inclination that shows the strip and be 10-30, and the slope sets up, makes and helps showing that the strip tip can extend towards busbar one side naturally under the effect of not having magnetic attraction, and then makes the magnetic sheet when close its and magnetic sheet apart from less relatively, can in time be adsorbed and be close to towards the centre.

Furthermore, the display-assisting strip comprises an outer color-transmitting tube and a self-connected string fixedly connected to the outer color-transmitting tube and far away from the inner wall of the corresponding limiting plate, the self-connected string is a colored elastic rope of which the end part is connected with a magnetic ball, so that two adjacent self-connected strings can be obviously observed to be in a disconnected color strip state when the signal lamp is not lightened from the two-state display string position in vision, the original length of the colored elastic rope is 1/2-3/4 of the length of the outer color-transmitting tube after the colored elastic rope is completely stretched, and the situation that the distance between the end parts of the two adjacent self-connected strings is not small easily when the corresponding signal lamp is not lightened is effectively ensured, so that the difference between the disconnected state and the two continuous states is obvious.

Compared with the prior art, the invention has the advantages that:

(1) Show the setting of cluster through two states, when the beam-pumping unit state that the signal lamp corresponds is normal, the electrically conductive cluster that corresponds can spontaneous switch on two busbar, when all signal lamps correspond the state all normally when, all electrically conductive clusters switch on the wire simultaneously this moment, and then make control switch circular telegram, the steerable beam-pumping unit of control switch carries out work this moment, compare in prior art, it can switch on only when the beam-pumping unit state is normal to effectively guarantee control switch, thereby control beam-pumping unit carries out relevant work, effectively avoid the condition of maloperation to take place, effectively guarantee the stability of beam-pumping unit work, furthermore, when electrically conductive cluster switches on the busbar, the strip that shows that helps that corresponds can receive the adsorption affinity and be close to each other, make two help show that the strip presents continuous color bar state, can effectively assist to show that whether the strip normally shows to the beam-pumping unit state.

(2) Make two adjacent conducting bars present the state of establishing ties, only when all electrically conductive cluster all imbed corresponding limiting plate in, can make the wire whole be switched on, make control switch circular telegram.

(3) The fixed end that runs through corresponding limiting plate of conducting strip and limiting plate connection and with limiting plate surface parallel and level make its be difficult for influencing the normal removal of touching the electric strip, be difficult for simultaneously influencing the contact of conducting strip on the electric strip and conducting strip tip, effectively guarantee that the electrically conductive cluster can switch on two adjacent conducting strips smoothly.

(4) The limiting plate is made for hard insulating material, electric putter's flexible scope is distance between conducting strip and the magnetic sheet central point, effectively guarantee to touch the electric strip when extending to the maximum range, the busbar just corresponds with the conducting strip, the magnetic sheet just corresponds with helping a demonstration strip mouth portion this moment, and then when effectively guaranteeing that two adjacent busbars are switched on, the magnetic sheet just produces the adsorption affinity to the cluster of connecing certainly, make adjacent two free ends from the cluster be close to each other, make originally two colour bars that are the disconnection can present continuous state, and then realize playing certain auxiliary action to the signal lamp display beam-pumping unit state.

(5) Connecting rod one end is located indulges the protective case, and the connecting rod other end is located violently the protective case, and when conducting strip switched on with the busbar, the magnetic sheet with help showing the tip coincidence of strip on the limiting plate, when making to switch on, the magnetic sheet just can adsorb and make it be close to towards the limiting plate from the end of a string, and then makes two adjacent from a string can be by the continuous state transition of disconnection orientation, and it is relatively great to change around making, and is better to the auxiliary action that shows the beam-pumping unit state.

(6) The auxiliary display strip is obliquely arranged, one end of the auxiliary display strip, which is located corresponding to the limiting plate, is low, the inclined angle of the auxiliary display strip is 10-30 degrees, the inclined arrangement enables the end part of the auxiliary display strip to naturally extend towards one side of the conductive strip under the action of no magnetic attraction, and then the distance between the magnetic sheet and the magnetic sheet is relatively small when the magnetic sheet is close to the magnetic sheet, and the magnetic sheet can be adsorbed in time and close to the magnetic sheet towards the middle.

(7) The display assisting strip comprises an outer color transparent tube and a self-connected string fixedly connected to the outer color transparent tube and far away from the inner wall of the corresponding limiting plate, the self-connected string is a colored elastic rope of which the end part is connected with a magnetic ball, so that the condition that two adjacent self-connected strings can present disconnected color strips when a signal lamp is not lightened can be obviously observed from a two-state display string in vision, the original length of the colored elastic rope is 1/2-3/4 of the length of the outer color transparent tube after the colored elastic rope is completely stretched, the condition that the distance between the end parts of two adjacent self-connected strings is not small easily when the corresponding signal lamp is not lightened is effectively ensured, and therefore, the disconnection and two continuous states are obviously different.

Drawings

FIG. 1 is a schematic diagram of the principal structure of the present invention;

FIG. 2 is a schematic diagram of the front side of the proximity control box of the present invention;

FIG. 3 is a schematic diagram of the front side of the two-state display string according to the present invention;

FIG. 4 is a schematic side view of a two-state display string according to the present invention when it is turned on;

FIG. 5 is a schematic diagram of a self-connecting portion of two conductive strips when they are conducted by a conductive string according to the present invention;

FIG. 6 is a schematic side view of a two-state display string according to the present invention when it is not turned on;

FIG. 7 is a schematic diagram of a self-connecting portion of two conductive strips not conducted by a conductive string according to the present invention;

FIG. 8 is a schematic structural diagram of a two-state display string in embodiment 2 of the present invention;

fig. 9 is a schematic diagram of a prior art structure.

The reference numbers in the figures illustrate:

the intelligent control system comprises a control box 1, a touch display screen 2, a control switch 3, a two-state display string 4, a transverse protective shell 41, a longitudinal protective shell 42, a lead 5, a conductive bar 51, a touch strip 52, a connecting rod 521, an abnormal plate 522, a limiting plate 53, a mounting plate 61, an electric push rod 62, a light sensor 7, a display assisting strip 8, an external color-permeable tube 81, a self-connected string 82 and a signal lamp 9.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and all other embodiments obtained by a person of ordinary skill in the art without creative efforts based on the embodiments of the present invention belong to the protection scope of the present invention.

Example 1:

the invention discloses pumping unit automatic control equipment convenient for flexibly switching remote control and near control, and referring to fig. 1 and fig. 9, the pumping unit automatic control equipment comprises a control box 1 for short-range control of a pumping unit and a remote control terminal for remote control of the pumping unit, wherein the remote control terminal controls the pumping unit to work through remote control of the pumping unit, the control box 1 can control the pumping unit to work on site, the control box 1 and the remote control terminal are both in signal connection with the pumping unit, a touch display screen 2 is installed at the front end of the control box 1, a control panel in signal connection with the pumping unit is installed in the control box 1, and a plurality of signal lamps 9 in signal connection with the control panel are also installed on the control box 1.

Referring to fig. 3-4, a two-state display string 4 is disposed on the control box 1, the two-state display string 4 is disposed below the plurality of signal lamps 9, the control box 1 is electrically connected to a control switch 3 through a wire 5, and the control switch 3 is in signal connection with the control board; the two-state display string 4 comprises a transverse protective shell 41 clamped on the control box 1, a plurality of longitudinal protective shells 42 fixedly connected to the outer ends of the transverse protective shells 41 and a conductive string positioned in the transverse protective shells 41, the transverse protective shells 41 are of hard transparent insulating structures, so that workers can observe the condition of color bars at the display assisting bars 8 conveniently, the longitudinal protective shells 42 are of non-transparent hard structures and can play a role in shading light, the light sensor 7 can only receive light when the signal lamp 9 is lightened, and the accuracy of the conductive string in conducting the conductive bar 51 is further effectively ensured; electrically conductive cluster is established ties on wire 5, indulges protective case 42 tip cover and establishes outside signal lamp 9, and outside signal lamp 9 tip extended to indulge protective case 42, still installs light sensor 7 on the control box 1, and light sensor 7 is located indulges protective case 42, and light sensor 7 and control panel signal connection.

Referring to fig. 4-5, the conductive string includes a plurality of pairs of limiting plates 53, electric contact strips 52 respectively corresponding to the plurality of pairs of limiting plates 53, and conductive strips 51 fixedly connected between two adjacent pairs of limiting plates 53, conductive strips 51 are also connected between the two pairs of limiting plates 53 at the outermost edge and the conductive strips 5, a mounting plate 61 is fixedly connected to the middle of the longitudinal protective shell 42, an electric push rod 62 is installed at one end of the mounting plate 61 close to the transverse protective shell 41, an extending end of the electric push rod 62 is fixedly connected to the end of the electric contact strips 52, and the electric push rod 62 is in signal connection with the control plate, so that the two adjacent conductive strips 51 are in series connection, only when all the conductive strings are embedded into the corresponding limiting plates 53, the conductive strips 5 are entirely conducted, so that the control switch 3 is powered on, the end of the conductive strip 51 connected to the limiting plate 53 is fixedly penetrated through the corresponding limiting plate 53 and flush with the surface of the limiting plate 53, so that the conductive strip 52 is not easily influenced in normal movement, and at the end contact between the conductive strips 51 on the conductive strip 52 is not easily influenced, thereby effectively ensuring that two adjacent conductive strips 51 can be conducted smoothly.

It should be noted that the two limit plates 53 and the modification plate 522 are parallel to each other in the vertical direction, and the distance between the two limit plates 53 is consistent with the thickness of the modification plate 522.

In addition, the control switch 3 can be used as a main switch, along the current direction, a branch switch can be connected in parallel to the last conducting bar 51 on each pair of limiting plates 53, the branch switch is used for controlling the pumping unit in the corresponding state of the signal lamp to perform related work, the part is selectable, and a worker can selectively set the branch switch according to needs during specific implementation.

The electric shock strip 52 comprises a connecting rod 521 and an abnormal plate 522 fixedly connected to the end of the connecting rod 521, the position of the abnormal plate 522 corresponds to the conductive strip 51, the left end and the right end of the abnormal plate 522 are respectively fixedly embedded with a conductive strip and a magnetic sheet, the conductive strip is located on one side close to the electric push rod 62, the limiting plate 53 is made of a hard insulating material, the telescopic range of the electric push rod 62 is the distance between the conductive strip and the central point of the magnetic sheet, as shown in fig. 4, the electric shock strip 52 is effectively ensured to be extended to the maximum range, the conductive strip 51 just corresponds to the conductive strip, the magnetic sheet just corresponds to the 8-mouth part of the display assisting strip at the moment, and when two adjacent conductive strips 51 are effectively ensured to be conducted, the magnetic sheet just generates an adsorption force to the self-connected string 82, so that the free ends of two adjacent self-connected strings 82 are close to each other, two originally disconnected color strips can present a continuous state, and further, the realization can play a certain auxiliary role in displaying the state of the pumping unit 9.

Referring to fig. 7, the outer ends of each group of the limiting plates 53 far away from each other are fixedly connected with the display assisting strips 8, the end portions of two adjacent display assisting strips 8 close to each other are in contact with each other, the display assisting strips 8 are located on the side of the conductive string far away from the longitudinal protective shell 42, one end of the connecting rod 521 is located in the longitudinal protective shell 42, the other end of the connecting rod 521 is located in the transverse protective shell 41, and when the conductive strips are conducted with the conductive strips 51, the magnetic strips are overlapped with the end portions of the display assisting strips 8 on the limiting plates 53, as shown in fig. 5, so that when the conductive strips are conducted, the magnetic strips just can adsorb the end portions of the self-connected strings 82 to enable the magnetic strips to close to the limiting plates 53, and then the two adjacent self-connected strings 82 can be changed from a disconnected state to a continuous state, so that the front-back change is relatively large, the auxiliary effect on displaying the state of the pumping unit is better, as shown in fig. 6, when the conductive strips are disconnected, the electric push rod 62 is in a shortened state, at this time, the conductive strips are separated from the conductive strips 51, the conductive strips are also separated from the display assisting strips 8, so that the color strips 8 are disconnected state, the magnetic strips 8 are not powered on the middle of the magnetic strips, and the magnetic strips are relatively inclined magnetic strips, and the magnetic strips can be inclined magnetic strips 10, and the magnetic strips can be set at a relatively small distance from the magnetic strips 8, and the magnetic strips can be relatively small side of the magnetic strips 8, and the magnetic strips can be relatively inclined side of the magnetic strips can be set when the magnetic strips 8.

The display assisting strip 8 comprises an outer color transparent tube 81 and a self-connected string 82 fixedly connected to the outer color transparent tube 81 and far away from the inner wall of the corresponding limiting plate 53, the self-connected string 82 is a colored elastic rope with a magnetic ball connected to the end part, so that when the signal lamp 9 is not lightened, the position of the two-state display string 4 is visually observed, two adjacent self-connected strings 82 can be in a disconnected color strip state, the original length of the colored elastic rope is 1/2-3/4 of the length of the outer color transparent tube 81, and the situation that when the corresponding signal lamp 9 is not lightened is effectively guaranteed, the distance between the end parts of two adjacent self-connected strings 82 is not small easily is effectively ensured, and therefore the difference between the disconnected state and the continuous state is obvious.

Through the setting of two attitude apparent cluster 4, when signal lamp 9 at short range control terminal is normally lighted, can make two busbar 51 that correspond that lead to of conducting string spontaneous switching-on correspondence of correspondence, only when all signal lamps 9 are all normally lighted, explain beam-pumping unit operating condition normal, all conducting strings switch on wire 5 simultaneously this moment, and then make control switch 3 circular telegram, the steerable beam-pumping unit of control switch 3 is worked this moment, compare in prior art, effectively guarantee control switch 3 and just can circular telegram when the beam-pumping unit state is normal, thereby control beam-pumping unit carries out relevant work, effectively avoid the condition of maloperation to take place, and then effectively guarantee the stability of beam-pumping unit work, in addition, through helping the setting that shows strip 8, when conducting string switches on busbar 51, corresponding help shows strip 8 can receive the adsorption affinity and then attached at limiting plate 53 surface, and then make two help show strip 8 to show and show the strip state in succession, can effectively help showing that shows strip 8 normally shows the beam-pumping unit state.

Example 2:

referring to fig. 8, the present solution does not include the signal lamp 9 and the light sensor 7, when a certain state of the pumping unit displayed by the original signal lamp 9 is normal, the control board directly controls the electric push rod 62 to extend or shorten, so that the conductive string conducts the two corresponding conductive bars 51, and further the color bar disconnected at the two corresponding display-assisting bars 8 is changed into a continuous color bar, and the state of the pumping unit is directly indicated whether normal or not through the change of the display-assisting bars 8, so as to achieve the display of the state of the pumping unit.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the equivalent replacement or change according to the technical solution and the modified concept of the present invention should be covered by the scope of the present invention.

Claims

1. The utility model provides a beam-pumping unit autonomous device convenient to nimble switching of far and near control, is including control box (1) that is used for the short range control beam-pumping unit and the remote control terminal that is used for the remote control beam-pumping unit, its characterized in that, control box (1) and remote control terminal all with beam-pumping unit signal connection, touch-control display screen (2) are installed to control box (1) front end, install the control panel with beam-pumping unit signal connection in control box (1), still install a plurality of signal lamps (9) with control panel signal connection on control box (1), be provided with two states on control box (1) and show cluster (4), two states show cluster (4) and be located a plurality of signal lamps (9) below, there is control switch (3) through wire (5) electric connection on control box (1), and control switch (3) and control panel signal connection;

the two-state display string (4) comprises a transverse protective shell (41) clamped on the control box (1), a plurality of longitudinal protective shells (42) fixedly connected to the outer end of the transverse protective shell (41) and a conductive string positioned in the transverse protective shell (41), the conductive string is connected in series on a wire (5), the end part of each longitudinal protective shell (42) is covered outside a signal lamp (9), the end part of the signal lamp (9) extends to the outside of the longitudinal protective shell (42), a light sensor (7) is further installed on the control box (1), the light sensor (7) is positioned in the longitudinal protective shell (42), and the light sensor (7) is in signal connection with the control panel;

electrically conductive cluster includes many pairs of limiting plate (53), electrocute strip (52) and fixed connection that correspond respectively with many pairs of limiting plate (53) busbar (51) between adjacent two pairs of limiting plate (53), is connected with busbar (51) between marginalized two pairs of limiting plate (53) and wire (5) equally, indulge protective housing (42) middle part fixedly connected with mounting panel (61), electric putter (62) are installed to mounting panel (61) one end near horizontal protective housing (41), electric putter (62) extension end and electrocute strip (52) tip fixed connection, and electric putter (62) and control panel signal connection, electrocute strip (52) are including metamorphosis board (522) of connecting rod (521) and fixed connection at connecting rod (521) tip, the position and busbar (51) of metamorphosis board (522) correspond, both ends are fixed respectively about metamorphosis board (522) and inlay has conducting strip and magnetic sheet, be located the one side that is close to electric putter (62).

2. The automatic control equipment of oil pumping unit for easy and flexible switching of remote and near control as claimed in claim 1, characterized in that said horizontal protective shell (41) is a hard and transparent insulating structure, and said vertical protective shell (42) is a non-transparent hard structure.

3. The automatic control equipment of the oil pumping unit convenient for the flexible switching of the remote control and the near control as claimed in claim 1, wherein the end of the conductive bar (51) connected with the limit plate (53) is fixed to penetrate through the corresponding limit plate (53) and is flush with the surface of the limit plate (53).

4. The automatic control equipment of the oil pumping unit convenient for the flexible switching of the remote control and the near control as claimed in claim 1, wherein the limiting plate (53) is made of hard insulating material, and the extension range of the electric push rod (62) is the distance between the central points of the conducting strips and the magnetic strips.

5. The automatic control equipment of the pumping unit convenient for the flexible switching of the remote control and the near control as claimed in claim 4, wherein the outer ends of each group of the limiting plates (53) far away from each other are fixedly connected with the display assisting strips (8), the end parts of two adjacent display assisting strips (8) close to each other are in contact with each other, and the display assisting strips (8) are positioned on one side of the conductive string far away from the longitudinal protective shell (42).

6. The automatic control equipment of the oil pumping unit convenient for the flexible switching of the remote and near control as claimed in claim 5, characterized in that one end of the connecting rod (521) is located in the longitudinal protective shell (42), the other end of the connecting rod (521) is located in the transverse protective shell (41), and when the conducting strip is conducted with the conducting bar (51), the magnetic strip is coincided with the end of the display-assisting strip (8) on the limiting plate (53).

7. The automatic control equipment of the pumping unit convenient for the flexible switching of the remote control and the near control as claimed in claim 6, wherein the display-assisting strip (8) is arranged obliquely, the display-assisting strip (8) is positioned at the lower end of the corresponding limiting plate (53), and the inclination angle of the display-assisting strip (8) is 10-30 degrees.

8. The automatic control equipment of the pumping unit convenient for the flexible switching of the remote control and the near control as claimed in claim 7, wherein the display-assisting strip (8) comprises an outer transparent tube (81) and a self-connection string (82) fixedly connected to the outer transparent tube (81) and far away from the inner wall of the corresponding limiting plate (53), the self-connection string (82) is a colored elastic rope with a magnetic ball connected to the end, and the original length of the colored elastic rope after being completely stretched is 1/2-3/4 of the length of the outer transparent tube (81).