CN213928344U

CN213928344U - Indicator diagram sensor for oil well pumping unit

Info

Publication number: CN213928344U
Application number: CN202023162207.9U
Authority: CN
Inventors: 王洋; 李环古; 王皎
Original assignee: Shenyang Ruifu Technology Co ltd
Current assignee: Shenyang Ruifu Technology Co ltd
Priority date: 2020-12-24
Filing date: 2020-12-24
Publication date: 2021-08-10
Anticipated expiration: 2030-12-24

Abstract

The utility model discloses an indicator diagram sensor for oil well beam-pumping unit, the power distribution box comprises a box body, the outer wall right side of box is connected with the apron through the round pin axle rotation, the inside of box is equipped with the sensor, the left end electric connection of sensor has the cable, the outer wall of cable runs through the inner wall left side of box, the inner wall fixedly connected with rubber sleeve of box, the inner wall of rubber sleeve offsets tightly with the outer wall of cable, the inner wall bottom left and right sides of box all is equipped with damping device, damping device includes base, first down tube, second down tube, first spring, sleeve, branch and bottom plate. The utility model relates to a sensor technical field, this indicator diagram sensor for oil well beam-pumping unit have fine protect function, can make the box in be sealing state, guarantee the work that the sensor can be normal, increase the life of part, its simple structure, safe and reliable satisfies the advantage of popular user demand.

Description

Indicator diagram sensor for oil well pumping unit

Technical Field

The utility model relates to a sensor technical field specifically is an indicator diagram sensor for oil well pumping unit.

Background

The indicator diagram sensor for the oil pumping unit of the oil well is used for reflecting the working state of an underground pump of the oil well and judging whether the oil well normally produces, the recorded indicator diagram of the oil pumping unit is important work content of daily management of the oil well, and the load sensor is used for collecting the load value of the oil pumping unit and is an essential component for recording the indicator diagram.

But prior art is indicator diagram sensor for oil well pumping unit, the signal line socket of the pumping unit load sensor of general adoption all is the straight mouth of horizontal direction, and in the great weather of wind-force ratio, the sensor rocks easily, cause and can not normally work, easily receive wearing and tearing, great reduction the working life of part, and it is fixed unstable, and can not guarantee sealed state, in the field environment, rainwater dust etc. have avoided getting into the box, often cause plug metal part to corrode and rust, so that contact failure causes load sensor malfunction, thereby lead to the confusion distortion of pumping unit indicator diagram data, seriously influence operating personnel to the judgement of oil well production situation.

SUMMERY OF THE UTILITY MODEL

The utility model provides a not enough to prior art, the utility model provides a merit figure sensor for oil well beam-pumping unit has solved present merit figure sensor for oil well beam-pumping unit, and the signal line socket of the beam-pumping unit load sensor of general adoption all is the straight mouth of horizontal direction, and in the great weather of wind-force ratio moreover, the sensor rocks easily, causes can not normally work, easily receives wearing and tearing, great reduction the life's of part problem.

In order to achieve the above purpose, the utility model discloses a following technical scheme realizes: the indicator diagram sensor for the oil well pumping unit comprises a box body, wherein a cover plate is rotatably connected to the right side of the outer wall of the box body through a pin shaft, a sensor is arranged inside the box body, a cable is electrically connected to the left end of the sensor, the outer wall of the cable penetrates through the left side of the inner wall of the box body, a rubber sleeve is fixedly connected to the inner wall of the box body, the inner wall of the rubber sleeve is tightly abutted to the outer wall of the cable, and damping devices are arranged on the left side and the right side of the bottom of the inner wall of the box body;

the damping device comprises a base, a first inclined rod, a second inclined rod, a first spring, a sleeve, a supporting rod and a bottom plate;

the bottom of base links to each other with the box is fixed, the top of base rotates through the round pin axle and is connected with first down tube, the top of first down tube rotates through the round pin axle and is connected with the second down tube, the top of second down tube rotates through the round pin axle and is connected with the bottom plate, the bottom fixedly connected with branch of bottom plate, the bottom fixedly connected with first spring of branch, the bottom and the box of first spring are fixed and link to each other. The outer wall clearance fit of first spring has the sleeve, telescopic bottom and box are fixed continuous, telescopic inner wall and the outer wall clearance fit of branch.

Preferably, the right side of the outer wall of the cover plate is fixedly connected with a handle.

Preferably, clamping devices are arranged on two sides of the top of the bottom plate;

the clamping device comprises a curved rod, a curved block, a sliding block, a first cross rod, a second spring, a support plate, a handle, a vertical plate, a second cross rod, a flat plate, a vertical rod, a cylinder, a third spring, a baffle, a top plate and a third inclined rod;

the bottom of the vertical plate is fixedly connected with the bottom plate, the inner wall of the vertical plate is rotatably connected with a second cross rod through a pin shaft, the right end of the second cross rod is fixedly connected with a handle, the left end of the second cross rod is rotatably connected with a flat plate through a pin shaft, the bottom of the flat plate is attached to the top of the vertical plate, the top of the flat plate is fixedly connected with a vertical rod, the top of the vertical rod is fixedly connected with a baffle plate, the outer wall of the baffle plate is in clearance fit with a cylinder, the top of the baffle plate is fixedly connected with a third spring, the top of the third spring is fixedly connected with a top plate, the top of the cylinder is fixedly connected with the top plate, the inner wall of the cylinder is in clearance fit with the outer wall of the vertical rod, the bottom right side of the top plate is fixedly connected with a support plate, the bottom of the support plate is fixedly connected with the bottom plate, and the top right side of the flat plate is rotatably connected with a third inclined rod through a pin shaft, the top of third down tube is connected with the slider through round pin axle rotation, the inner wall clearance fit of slider has first horizontal pole, the both ends of first horizontal pole all link to each other with the inner wall recess of roof is fixed, the right-hand member fixedly connected with second spring of slider, the right-hand member of second spring links to each other with the inner wall of roof is fixed, the top fixedly connected with curved bar of slider, the outer wall top of roof is run through to the outer wall bottom of curved bar, the outer wall of curved bar and the inner wall clearance fit of roof, the top left side of curved bar is equipped with the bent piece, the left end of bent piece links to each other with the sensor is fixed, the right side and the curved bar looks joint of bent piece.

Preferably, the top of the vertical plate is fixedly connected with a rubber pad.

Preferably, a fixing device is arranged below the right side of the cover plate;

the fixing device comprises a vertical block, a transverse plate, a transverse block, a hand wheel, a fourth inclined rod and a threaded rod;

the bottom fixedly connected with hand wheel of threaded rod, the top of threaded rod is passed through the bearing and is rotated the connection diaphragm, the right-hand member and the box of diaphragm are fixed to be linked to each other, the outer wall threaded connection of threaded rod has the crossblock, the outer wall left side of crossblock is rotated through the round pin axle and is connected with the fourth down tube, the top of fourth down tube is rotated through the round pin axle and is connected with the riser, the inner wall of riser and the outer wall clearance fit of diaphragm, the left side of riser offsets tightly with apron and box respectively.

Preferably, the outer wall of the hand wheel is provided with grinding lines.

Advantageous effects

The utility model provides an indicator diagram sensor for oil well pumping unit. The method has the following beneficial effects: the indicator diagram sensor for the oil well pumping unit has a good protection function, can enable the interior of a box body to be in a sealed state, prevents rainwater, dust and the like from entering the box body and causing corrosion and rusting of metal parts of a plug, so that the failure of a load sensor caused by poor contact can cause the disordered and distorted indicator diagram data of the oil well pumping unit, can fix the sensor, ensure the normal work of the sensor, can also absorb shock of the sensor, prevent the abrasion caused by overlarge external wind force, and prolong the service life of parts, and has the advantages of simple structure, safety, reliability and capability of meeting the use requirements of the public;

the base, the first diagonal rod, the second diagonal rod, the first spring, the sleeve, the support rod and the bottom plate are matched to realize the advantages of ensuring the normal work of the sensor, absorbing shock to the sensor, preventing parts from being abraded due to overlarge external wind force and prolonging the service life of the parts;

the sensor is fixed by matching the curved rod, the curved block, the sliding block, the first cross rod, the second spring, the supporting plate, the handle, the vertical plate, the second cross rod, the flat plate, the vertical rod, the cylinder, the third spring, the baffle plate, the top plate and the third inclined rod, so that unnecessary loss caused by the fact that the sensor falls and is damaged and the like due to the influence of external factors on the box body is prevented, and the service life of parts is prolonged;

through the cooperation of riser, diaphragm, horizontal piece, hand wheel, fourth down tube and threaded rod, accomplished to make and be encapsulated situation in the box, prevent rainwater dust etc. and get into the box, cause plug metal parts to corrode and rust to it is out of order to cause load sensor, results in the benefit of the chaotic distortion of beam-pumping unit indicator diagram data that contact failure caused.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of the connection relationship between the vertical blocks, the horizontal plates and the horizontal blocks in FIG. 1;

FIG. 3 is a schematic view of the connection structure of the base, the first diagonal member and the bottom plate in FIG. 1;

FIG. 4 is a schematic view of the connection of the plate, riser and roof of FIG. 1.

In the figure: 1. the device comprises a box body, 2, a fixing device, 201, vertical blocks, 202, a transverse plate, 203, a transverse block, 204, a hand wheel, 205, a fourth inclined rod, 206, a threaded rod, 3, a damping device, 301, a base, 302, a first inclined rod, 303, a second inclined rod, 304, a first spring, 305, a sleeve, 306, a support rod, 307, a bottom plate, 4, a clamping device, 401, a curved rod, 402, a curved block, 403, a sliding block, 404, a first transverse rod, 405, a second spring, 406, a support plate, 407, a handle, 408, a vertical plate, 409, a second transverse rod, 410, a flat plate, 411, a vertical rod, 412, a cylinder, 413, a third spring, 414, a baffle, 415, a top plate, 416, a third inclined rod, 5, a cover plate, 6, a sensor, 7, a cable, 8 and a rubber sleeve.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

The following working principles, detailed connecting means thereof, and the following main descriptions of the working principles and processes are well known in the art, and will be referred to by those skilled in the art for the specific connection and operation sequence of the components in this application.

The utility model provides a technical scheme:

as shown in fig. 1-4, the indicator diagram sensor for the oil pumping unit of the oil well comprises a box body 1, a cover plate 5 is rotatably connected to the right side of the outer wall of the box body 1 through a pin shaft, a sensor 6 is arranged inside the box body 1, the specific type of the sensor 6 is not limited and can meet the use requirement, a cable 7 is electrically connected to the left end of the sensor 6, the outer wall of the cable 7 penetrates through the left side of the inner wall of the box body 1, a rubber sleeve 8 is fixedly connected to the inner wall of the box body 1, the rubber sleeve 8 is adopted to achieve a sealing state inside the box body 1, the inner wall of the rubber sleeve 8 is tightly abutted to the outer wall of the cable 7, damping devices 3 are arranged on the left side and the right side of the bottom of the inner wall of the box body 1, each damping device 3 comprises a base 301, a first diagonal 302, a second diagonal 303, a first spring 304, a sleeve 305, a support rod 306 and a bottom plate 307, the bottom of the base 301 is fixedly connected to the box body 1, the top of the base 301 is rotatably connected with a first inclined rod 302 through a pin shaft, the pin shaft plays a limiting role, the top of the first inclined rod 302 is rotatably connected with a second inclined rod 303 through the pin shaft, the top of the second inclined rod 303 is rotatably connected with a bottom plate 307 through the pin shaft, the bottom plate 307 plays a supporting role, the bottom of the bottom plate 307 is fixedly connected with a supporting rod 306, the bottom of the supporting rod 306 is fixedly connected with a first spring 304, the bottom of the first spring 304 is fixedly connected with the box body 1, the first spring 304 plays a limiting role, a sleeve 305 is in clearance fit with the outer wall of the first spring 304, the bottom of the sleeve 305 is fixedly connected with the box body 1, the inner wall of the sleeve 305 is in clearance fit with the outer wall of the supporting rod 306, the right side of the outer wall of the cover plate 5 is fixedly connected with a handle, and the handle plays a role of facilitating a user to open the box body 1;

in the specific implementation process, it is worth pointing out that the base 301, the first diagonal rod 302, the second diagonal rod 303, the first spring 304, the sleeve 305, the support rod 306 and the bottom plate 307 cooperate to achieve the advantages of ensuring the normal operation of the sensor, absorbing shock for the sensor 6, preventing the abrasion of the parts caused by the excessive external wind force, and increasing the service life of the parts.

The two sides of the top of the bottom plate 307 are respectively provided with a clamping device 4, the clamping devices 4 comprise a curved rod 401, a curved block 402, a sliding block 403, a first cross rod 404, a second spring 405, a support plate 406, a pull handle 407, a vertical plate 408, a second cross rod 409, a flat plate 410, a vertical rod 411, a cylinder 412, a third spring 413, a baffle 414, a top plate 415 and a third inclined rod 416, the bottom of the vertical plate 408 is fixedly connected with the bottom plate 307, the inner wall of the vertical plate 408 is rotatably connected with the second cross rod 409 through a pin shaft, the right end of the second cross rod 409 is fixedly connected with the pull handle 407, the left end of the second cross rod 409 is rotatably connected with the flat plate 410 through a pin shaft, the flat plate 410 plays a limiting role, the bottom of the flat plate 410 is attached to the top of the vertical plate 408, the top of the flat plate 410 is fixedly connected with the vertical rod 411, the top of the vertical rod 411 is fixedly connected with the baffle 414, the outer wall of the baffle 414 is in clearance fit with the cylinder 412, the top of the baffle 414 is fixedly connected with the third spring 413, the third spring 413 plays a limiting role, the top of the third spring 413 is fixedly connected with a top plate 415, the top of the cylinder 412 is fixedly connected with the top plate 415, the inner wall of the cylinder 412 is in clearance fit with the outer wall of the vertical rod 411, the right side of the bottom of the top plate 415 is fixedly connected with a support plate 406, the bottom of the support plate 406 is fixedly connected with the bottom plate 307, the right side of the top of the flat plate 410 is rotatably connected with a third inclined rod 416 through a pin shaft, the top of the third inclined rod 416 is rotatably connected with a sliding block 403 through a pin shaft, the inner wall of the sliding block 403 is in clearance fit with a first cross rod 404, two ends of the first cross rod 404 are fixedly connected with a groove in the inner wall of the top plate 415, the right end of the sliding block is fixedly connected with a second spring 405, the right end of the second spring 405 is fixedly connected with the inner wall of the top plate 415, the top of the sliding block 403 is fixedly connected with a curved rod 401, the curved rod 401 plays a role of fixing the sensor 6, the bottom of the outer wall of the curved rod 401 penetrates through the top of the outer wall of the top plate 415, the outer wall of the curved rod 401 is in clearance fit with the inner wall of the top plate 415, a curved block 402 is arranged on the left side of the top of the curved rod 401, the left end of the curved block 402 is fixedly connected with the sensor 6, the right side of the curved block 402 is clamped with the curved rod 401, a rubber pad is fixedly connected to the top of the vertical plate 408, the rubber pad plays a role in reducing friction force, and abrasion between the top plate 415 and the vertical plate 408 is reduced;

in the specific implementation process, it is worth pointing out that the fixing of the sensor is completed through the cooperation of the curved bar 402, the curved block 402, the sliding block 403, the first cross bar 404, the second spring 405, the support plate 406, the handle 407, the vertical plate 408, the second cross bar 409, the flat plate 410, the vertical bar 411, the cylinder 412, the third spring 413, the baffle 414, the top plate 415 and the third inclined bar 416, so as to prevent the sensor 6 from being dropped and damaged due to the influence of external factors on the box body 1, which causes unnecessary loss and increases the service life of parts.

The fixing device 2 is arranged below the right side of the cover plate 5, the fixing device 2 comprises a vertical block 201, a transverse plate 202, a transverse block 203, a hand wheel 204, a fourth inclined rod 205 and a threaded rod 206, the bottom of the threaded rod 206 is fixedly connected with the hand wheel 204, the top of the threaded rod 206 is rotatably connected with the transverse plate 202 through a bearing, the abrasion between the transverse plate 202 and the threaded rod 206 is reduced by adopting the bearing, the service life of parts is prolonged, the transverse plate 202 plays a supporting role, the right end of the transverse plate 202 is fixedly connected with the box body 1, the outer wall of the threaded rod 206 is in threaded connection with the transverse block 203, the left side of the outer wall of the transverse block 203 is rotatably connected with the fourth inclined rod 205 through a pin shaft, the top of the fourth inclined rod 205 is rotatably connected with the vertical block 201 through a pin shaft, the vertical block 201 plays a role of fixing the cover plate 5, the inner wall of the vertical block 201 is in clearance fit with the outer wall of the transverse plate 202, the left side of the vertical block 201 is respectively abutted against the cover plate 5 and the box body 1, abrasive grains are processed on the outer wall of the hand wheel 204, the milled lines play a role in increasing friction and facilitating the rotation of the threaded rod 206 by a user;

in the specific implementation process, it is worth pointing out that the vertical block 201, the transverse plate 202, the transverse block 203, the hand wheel 204, the fourth inclined rod 205 and the threaded rod 206 are matched to achieve the effect that the interior of the box body is in a sealed state, so that rainwater, dust and the like are prevented from entering the box body, metal parts of a plug are prevented from being corroded and rusted, the load sensor is prevented from being damaged due to poor contact, and the indicator diagram data of the pumping unit is disordered and distorted.

As can be seen from the above, when the indicator diagram sensor for an oil well pumping unit is used, firstly, the hand wheel 204 is turned to drive the threaded rod 206 to rotate, and the threaded rod 206 drives the vertical block 201 to move rightward through the horizontal block 203 and the fourth inclined rod 205. Pulling the handle to open the cover plate 5, pressing the handle 407, putting the sensor 6 on the top plate 405, loosening the handle 407, pressing the vertical rod 411 by the flat plate 410 through the third spring 413 to make the flat plate downwards fit with the vertical plate 408, downwards driving the sliding block 403 to move leftwards through the third inclined rod 406 by the flat plate 410, driving the curved rod 401 to move leftwards to be clamped with the curved block 402 by the sliding block 403, further completing the fixation of the sensor 6, when the box body 1 is subjected to external force, driving the bottom plate 307 to move downwards through the top plate 415 and the support plate 416 by the sensor 6, and compressing the first spring 304 by the support rod 307 to complete the absorption of energy and further completing the shock absorption of the sensor 6.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation. The use of the phrase "comprising one of the elements does not exclude the presence of other like elements in the process, method, article, or apparatus that comprises the element.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "disposed," "connected," "fixed," "screwed" and the like are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through an intermediate medium, and may be connected through the inside of two elements or in an interaction relationship between two elements, unless otherwise specifically defined, and the specific meaning of the above terms in the present invention will be understood by those skilled in the art according to specific situations.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides an indicator diagram sensor for oil well pumping unit, includes box (1), its characterized in that: the right side of the outer wall of the box body (1) is rotatably connected with a cover plate (5) through a pin shaft, a sensor (6) is arranged inside the box body (1), the left end of the sensor (6) is electrically connected with a cable (7), the outer wall of the cable (7) penetrates through the left side of the inner wall of the box body (1), the inner wall of the box body (1) is fixedly connected with a rubber sleeve (8), the inner wall of the rubber sleeve (8) is tightly abutted to the outer wall of the cable (7), and damping devices (3) are arranged on the left side and the right side of the bottom of the inner wall of the box body (1);

the damping device (3) comprises a base (301), a first inclined rod (302), a second inclined rod (303), a first spring (304), a sleeve (305), a support rod (306) and a bottom plate (307);

the bottom of base (301) is fixed continuous with box (1), the top of base (301) is connected with first down tube (302) through the round pin axle rotation, the top of first down tube (302) is connected with second down tube (303) through the round pin axle rotation, the top of second down tube (303) is connected with bottom plate (307) through the round pin axle rotation, the bottom fixedly connected with branch (306) of bottom plate (307), the first spring (304) of bottom fixedly connected with of branch (306), the bottom and the box (1) of first spring (304) are fixed continuous, the outer wall clearance fit of first spring (304) has sleeve (305), the bottom and the box (1) of sleeve (305) are fixed continuous, the inner wall and the outer wall clearance fit of branch (306) of sleeve (305).

2. The indicator diagram sensor for an oil well pumping unit according to claim 1, wherein: the right side of the outer wall of the cover plate (5) is fixedly connected with a handle.

3. The indicator diagram sensor for an oil well pumping unit according to claim 1, wherein: clamping devices (4) are arranged on two sides of the top of the bottom plate (307);

the clamping device (4) comprises a curved rod (401), a curved block (402), a sliding block (403), a first cross rod (404), a second spring (405), a support plate (406), a handle (407), a vertical plate (408), a second cross rod (409), a flat plate (410), a vertical rod (411), a cylinder (412), a third spring (413), a baffle plate (414), a top plate (415) and a third inclined rod (416);

the bottom of the vertical plate (408) is fixedly connected with the bottom plate (307), the inner wall of the vertical plate (408) is rotatably connected with a second cross rod (409) through a pin shaft, the right end of the second cross rod (409) is fixedly connected with a handle (407), the left end of the second cross rod (409) is rotatably connected with a flat plate (410) through a pin shaft, the bottom of the flat plate (410) is attached to the top of the vertical plate (408), the top of the flat plate (410) is fixedly connected with a vertical rod (411), the top of the vertical rod (411) is fixedly connected with a baffle plate (414), the outer wall of the baffle plate (414) is in clearance fit with a cylinder (412), the top of the baffle plate (414) is fixedly connected with a third spring (413), the top of the third spring (413) is fixedly connected with a top plate (415), the top of the cylinder (412) is fixedly connected with the top plate (415), and the inner wall of the cylinder (412) is in clearance fit with the outer wall of the vertical rod (411), a support plate (406) is fixedly connected to the right side of the bottom of the top plate (415), the bottom of the support plate (406) is fixedly connected with a bottom plate (307), a third inclined rod (416) is rotatably connected to the right side of the top of the flat plate (410) through a pin shaft, a slider (403) is rotatably connected to the top of the third inclined rod (416) through a pin shaft, a first cross rod (404) is in clearance fit with the inner wall of the slider (403), two ends of the first cross rod (404) are fixedly connected with inner wall grooves of the top plate (415), a second spring (405) is fixedly connected to the right end of the slider (403), the right end of the second spring (405) is fixedly connected with the inner wall of the top plate (415), a curved rod (401) is fixedly connected to the top of the slider (403), the bottom of the outer wall of the curved rod (401) penetrates through the top of the outer wall of the top plate (415), and the outer wall of the curved rod (401) is in clearance fit with the inner wall of the top plate (415), the top left side of curved bar (401) is equipped with curved piece (402), the left end and the sensor (6) of curved piece (402) are fixed continuous, the right side and the curved bar (401) looks joint of curved piece (402).

4. The indicator diagram sensor for an oil well pumping unit according to claim 3, wherein: the top of the vertical plate (408) is fixedly connected with a rubber pad.

5. The indicator diagram sensor for an oil well pumping unit according to claim 1, wherein: a fixing device (2) is arranged below the right side of the cover plate (5);

the fixing device (2) comprises a vertical block (201), a transverse plate (202), a transverse block (203), a hand wheel (204), a fourth inclined rod (205) and a threaded rod (206);

the bottom fixedly connected with hand wheel (204) of threaded rod (206), the top of threaded rod (206) is passed through the bearing and is rotated connection diaphragm (202), the right-hand member of diaphragm (202) is fixed continuous with box (1), the outer wall threaded connection of threaded rod (206) has horizontal piece (203), the outer wall left side of horizontal piece (203) is rotated through the round pin axle and is connected with fourth down tube (205), the top of fourth down tube (205) is rotated through the round pin axle and is connected with riser (201), the inner wall of riser (201) and the outer wall clearance fit of diaphragm (202), the left side of riser (201) offsets tightly with apron (5) and box (1) respectively.

6. The indicator diagram sensor for an oil well pumping unit according to claim 5, wherein: the outer wall of the hand wheel (204) is processed with grinding grains.