CN110779601A - Crawler-type steel grabbing machine metering device - Google Patents
Crawler-type steel grabbing machine metering device Download PDFInfo
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- CN110779601A CN110779601A CN201911010138.9A CN201911010138A CN110779601A CN 110779601 A CN110779601 A CN 110779601A CN 201911010138 A CN201911010138 A CN 201911010138A CN 110779601 A CN110779601 A CN 110779601A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01G—WEIGHING
- G01G3/00—Weighing apparatus characterised by the use of elastically-deformable members, e.g. spring balances
- G01G3/12—Weighing apparatus characterised by the use of elastically-deformable members, e.g. spring balances wherein the weighing element is in the form of a solid body stressed by pressure or tension during weighing
- G01G3/14—Weighing apparatus characterised by the use of elastically-deformable members, e.g. spring balances wherein the weighing element is in the form of a solid body stressed by pressure or tension during weighing measuring variations of electrical resistance
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01G—WEIGHING
- G01G23/00—Auxiliary devices for weighing apparatus
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Abstract
The invention discloses a crawler-type steel grabbing machine metering device, wherein a bucket rod and a grabbing mechanism are arranged on the crawler-type steel grabbing machine, the grabbing mechanism comprises a grab bucket and a grab handle, the grabbing mechanism comprises a weighing sensor, one end of the weighing sensor is connected to the bucket rod through a suspension block, the weighing sensor comprises an annular elastic body, and two concentric but non-through grooves are formed in the outer walls of the two sides of the annular elastic body; wherein: the wall between the grooves is an induction wall, an induction circuit is arranged on the induction wall and comprises resistance strain gauges pasted on two side walls of the induction wall, and the resistance strain gauges are electrically connected with various compensation resistors and used for compensating errors in the circuit. The invention has the advantages that: through set up weighing sensor on the dipper of crawler-type steel machine of grabbing, solved among the current operation too big, the inconvenient problem of the mode of weighing of cost consumption to the scrap steel.
Description
Technical Field
The invention relates to a weighing and metering device of a crawler-type steel grabbing machine, in particular to a metering device of the crawler-type steel grabbing machine.
Background
So far, no product report and information of a high-precision metering device which is specially suitable for and integrated with a steel grabbing machine is found; in the past, the crawler-type steel grabbing machine is only used as a tool for dumping and settling scrap steel and stacking environments, and the measurement of the crawler-type steel grabbing machine is not valued by people all the time.
The batching and the bucket loading of the scrap steel bucket in a scrap steel plant are almost all produced by a production process that the scrap steel is sucked by an electromagnetic chuck of a crown block and is conveyed to an electronic truck scale (also called as an anti-smashing scale) arranged on the ground of a workshop (a foundation pit type structure at a fixed position) for metering. The existing scrap steel anti-smashing electronic scale is not on the structure of an electronic truck scale, a layer of weighing platform is additionally arranged, and a plurality of buffer devices are additionally arranged between the two layers of weighing platforms. The method is characterized in that for a long time, massive waste steel weighing dozens of kilograms to 3 tons is loaded into a waste steel hopper from a height of 3-10 meters in a free falling mode, the deformation of a weighing platform is easily caused by huge impact force, the metering is out of alignment, and the waste steel hopper can be used after being adjusted.
The rail vehicle-mounted type steel scrap electronic scale is used for short-distance transportation in a factory building, a contained steel scrap hopper is placed on a weighing platform of the rail vehicle-mounted type steel scrap electronic scale, a required name of steel scrap is sucked up through an electromagnetic chuck of an overhead crane and moves to the upper side of a steel scrap vehicle, the sucked steel scrap is aligned to the steel scrap hopper, the electromagnetic chuck releases magnetism, the steel scrap falling freely is loaded into the steel scrap hopper, and the rail vehicle-mounted type steel scrap electronic scale is often subjected to strong impact from an uncertain direction to cause the elastic deformation inconsistency of a damping spring, cause the unbalance loading of the weighing platform and cause weighing misalignment; there is therefore a need for a heavy device designed to be applicable on crawler steel grippers.
The utility model discloses a chinese utility model with publication number CN201837447U, this utility model discloses a weighing sensor's elastomer, it has first blind hole and second blind hole to open on the elastomer, first blind hole and second blind hole are separated by the diaphragm, first blind hole and second blind hole about the axis symmetry of elastomer. The bottom of each of the first blind hole and the second blind hole is respectively provided with a first resistance strain gauge and a second resistance strain gauge, and the first resistance strain gauge and the second resistance strain gauge are connected to form a Wheatstone bridge.
Disclosure of Invention
The invention aims to provide a crawler-type steel grabbing machine metering device, which can effectively solve the problem that the conventional scrap steel weighing device is inconvenient to weigh and use by arranging the steel grabbing machine metering device on a grabbing mechanism of the crawler-type steel grabbing machine.
In order to solve the technical problems, the invention is realized by the following technical scheme:
a crawler-type steel grabbing machine metering device is characterized in that a bucket rod and a grabbing mechanism are arranged on a crawler-type steel grabbing machine, the grabbing mechanism comprises a grab bucket and a grab handle, the grabbing mechanism comprises a weighing sensor, one end of the weighing sensor is connected to the bucket rod through a suspension block, the weighing sensor further comprises an annular elastic body, and two concentric but non-through grooves are formed in the outer walls of the two sides of the annular elastic body; the connecting blocks comprise a first connecting block and a second connecting block, the first connecting block and the second connecting block are arranged at two ends of the annular elastic body and are perpendicular to each other, and the second connecting block is rotatably connected with the gripper through a transmission block; wherein: the wall between the grooves is an induction wall, an induction circuit is arranged on the induction wall, the induction wall comprises resistance strain gauges pasted on two side walls of the induction wall, and the resistance strain gauges are electrically connected with various compensation resistors and used for compensating errors in the circuit; the resistance strain gauge and the compensation resistor form a Wheatstone bridge to form a weighing sensor which can be arranged on the steel grabbing machine; the end faces of the first connecting block and the second connecting block are respectively provided with a first through hole and a second through hole, and the inner wall of each second through hole is provided with inward bulges along the circumferential direction; the arrangement of the bulge can enable the sensor to realize quick centering on the grab bucket mechanism; the weighing sensor is provided with a three-dimensional acceleration sensor for acquiring three-dimensional speed and direction parameters of the gripper, the gripper can shake or deflect when the steel grabbing machine works, the three-dimensional acceleration sensor is arranged to correct data acquired by the weighing sensor in real time, and accuracy is improved.
Preferably, the cross-sectional shape of the protrusion is a circular arc, or the cross-sectional shape is other shapes that are beneficial for increasing the stability of the load cell, such as: trapezoidal, etc.; the first through hole is rotatably connected with the suspension block through a shaft pin, the second through hole is rotatably connected with the transmission block through a shaft pin, a thread assembly method is generally adopted when the traditional weighing sensor is connected with the upper part and the lower part, and the coaxiality between the sensor and the upper part and the lower part can be more effectively ensured through the shaft pin connection.
Furthermore, the cross section of the shaft pin arranged in the second through hole is in a concave arc shape matched with the protrusion, the shaft pin connected with the weighing sensor is designed into the concave arc shape, the shaft pin is convenient to work in cooperation with the second through hole of the weighing sensor, and the stability of the weighing sensor is improved.
In order to reduce the abrasion of the weighing sensor, a wear-resistant shaft sleeve is arranged in the first through hole, so that the service life of the weighing sensor is prolonged.
Preferably, the transmission block comprises a first insertion block, the first insertion block is connected with a second insertion block, a first insertion groove is formed in the top of the first insertion block, and a second insertion groove perpendicular to the first insertion groove is formed in the second insertion block; the first inserting groove is connected to the second connecting block through a shaft pin, the second inserting groove is connected with the grab bucket through the shaft pin, and the first inserting groove and the second inserting groove are perpendicular to each other, so that the grabbing mechanism is enabled to reduce the shaking amplitude as soon as possible and shorten the shaking time.
Preferably, metering device still includes special secondary instrument, special secondary instrument includes control circuit, display screen, communication module and touch-sensitive screen, control circuit is connected with three-dimensional acceleration sensor and induction circuit electricity, the control circuit electricity is connected with the server for the data of storing the collection, control circuit can synthesize the data that weighing sensor and three-dimensional acceleration sensor gathered, real-time adjustment error and with data display on the display screen, give the touch-sensitive screen data real-time transmission through communication module, personnel are more convenient looking over weighing device during operation, and is safer to operating condition's management.
Furthermore, the control circuit is electrically connected with the touch display screen, and a wireless transmission module is arranged in the touch display screen and can send information to other equipment for checking; still be provided with the megaphone in the touch display screen for carry out voice prompt, the operating personnel operation of being convenient for.
Furthermore, the touch display screen is electrically connected with a large-screen display and used for remotely viewing information.
Preferably, be equipped with the nozzle with first through-hole intercommunication on the first connecting block outer wall, add lubricating oil in to the nozzle, can make the rotation between wear-resisting axle sleeve and the weighing sensor more smooth and easy, reduce wearing and tearing.
Preferably, the electric wire at both ends of the induction circuit extends to the outside through the annular elastic body and is connected with an aviation waterproof connector for avoiding the circuit seepage of the weighing sensor from being damaged, and further increasing the practicability of the metering device.
Compared with the prior art, the invention has the advantages that:
the problems that the waste steel weighing cost is excessively consumed and the weighing mode is inconvenient (accurate metering cannot be achieved) in the existing operation are solved by arranging the weighing sensor on the grabbing mechanism of the crawler-type steel grabbing machine, even under the condition of severe operating environment, the rapid centering can be achieved by matching the bulge in the second through hole of the weighing sensor with the downstream part, the influence of the environment on the metering accuracy is greatly reduced, the accuracy of the metering device is further improved by combining and analyzing the data acquired by the weighing sensor and the three-dimensional acceleration sensor, and the using method is simple and rapid; the structure mutually perpendicular of first connecting block and second connecting block can reduce the error that brings the influence of cyclic annular elastomer, has guaranteed metering device's the degree of accuracy.
Drawings
FIG. 1 is a schematic view of a main body of a metering device and a steel grasping machine after the metering device and the steel grasping machine are assembled;
FIG. 2 is a schematic view of a metering device according to the present invention;
FIG. 3 is a schematic view of the main structure of the load cell of the present invention;
FIG. 4 is a side elevational view of the body of the load cell of the present invention;
FIG. 5 is an enlarged detail view of FIG. 4;
FIG. 6 is a schematic structural diagram of a main body of an annular elastic body in the load cell;
FIG. 7 is a cross-sectional view of a ring-shaped elastomer in the load cell;
FIG. 8 is a front surface patch diagram of a sensing circuit adhered to a sensing wall;
FIG. 9 is a diagram of a back patch with one sensing circuit adhered to the sensing wall;
FIG. 10 is a circuit schematic of a sensing circuit;
FIG. 11 is a schematic structural diagram of a main body of a transmission block in the weighing sensor;
FIG. 12 is a schematic front view of a transmission block in the load cell;
FIG. 13 is a schematic side view of a drive block in the load cell;
FIG. 14 is a front patch diagram of two (redundant) sensing circuits attached to a sensing wall;
FIG. 15 is a back patch diagram of two (redundant) sensing circuits attached to a sensing wall;
FIG. 16 is a circuit schematic of the addition of a second way (redundant) sensing circuit;
FIG. 17 is a schematic front view of a dedicated secondary meter;
FIG. 18 is a schematic view of the back of a specialized secondary meter;
FIG. 19 is a schematic diagram showing the connection of a control circuit for inputting a signal of a sensing circuit in the special secondary meter;
FIG. 20 is a schematic diagram showing the connection of a control circuit for inputting signals of two sensing circuits in the special secondary meter;
FIG. 21 is a schematic view of a touch screen with a microphone;
in the figure:
1. a bucket rod; 2. a grabbing mechanism; 3. a suspension block; 4. a three-dimensional acceleration sensor; 5. a weighing sensor; 6. a transmission block; 7. a grab bucket; 8. a gripper; 9. a first connection block; 10. a first through hole; 11. a wear-resistant shaft sleeve; 12. a cyclic elastomer; 13. a groove; 14. a second through hole; 15. a second connecting block; 16. an aerial water joint; 17. a fuel filler nozzle; 18. an induction wall; 19. a resistance strain gauge; 20. a compensation resistor; 21. millimeter paper; 22. a first plug-in block; 23. a first insertion groove; 24. a second insertion groove; 25. a second insertion block; 26. a display screen; 27. a touch screen; 28. a loudspeaker; 29. a protrusion; rto, zero temperature compensation resistor; rz, zero compensation resistance; ri, input resistance compensation; rct, coefficient temperature compensation resistance; rc, weighing sensor coefficient compensation resistance; uo + and the output voltage of the weighing sensor is positive; UO-, the output voltage of the weighing sensor is negative; ui + and a weighing sensor supply bridge voltage to be positive; ui-, the weighing sensor supplies bridge voltage to be negative.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on those shown in the drawings, and are used merely for convenience of description and for simplicity of description, and do not indicate or imply that the device or element so referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus should not be considered as limiting the present invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; may be mechanically coupled, may be electrically coupled or may be in communication with each other; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
Referring to fig. 1-9, a first embodiment of the metering device of the crawler-type steel grabbing machine is shown, wherein a bucket rod 1 and a grabbing mechanism 2 are arranged on the crawler-type steel grabbing machine, the grabbing mechanism 2 comprises a grab bucket 7 and a grab handle 8, the grab handle is generally a quincuncial grab handle or an electromagnetic chuck, the grabbing mechanism 2 further comprises a weighing sensor 5, one end of the weighing sensor 5 is connected to the bucket rod 1 through a hanging block 3, the weighing sensor 5 comprises an annular elastic body 12, and two concentric but non-through grooves 13 are arranged on the outer walls of two sides of the annular elastic body 12; the connecting blocks comprise a first connecting block 9 and a second connecting block 15, and the first connecting block 9 and the second connecting block 15 are arranged at two ends of the annular elastic body 12 and are perpendicular to each other; the second connecting block 15 is rotationally connected with the grab bucket 7 through the transmission block 6; wherein: the wall between the grooves 13 is a sensing wall 18, the sensing wall 18 is provided with a sensing circuit which comprises resistance strain gauges 19 adhered on two side walls of the sensing wall 18, the resistance strain gauges 19 are electrically connected with various compensation resistors 20 for compensating errors in the circuit, when weight tension or pressure on a gripper of a steel gripper acts on an annular elastic body through a vertical central line of a sensor elastic body special for the steel gripper, a shear stress area forming 45 degrees with the vertical central line of the elastic body is generated on the sensing wall, millimeter paper 21 is adhered on the front and back surfaces of the shear stress area, so that the resistance strain gauges and the compensation resistors can be adhered subsequently, 4-piece 45-degree resistance strain gauges R1, R2, R3 and R4 are adhered on the shear stress area, wherein R1 and R2 are adhered on the front surface of the shear stress area, and R3 and R4 are adhered on the back surface of the shear stress area. The sensing circuit of the load cell 5 is formed by connecting resistance strain gauges R1, R2, R3 and R4 through a Wheatstone bridge circuit and compensation resistors, and is shown in FIG. 10; the end faces of the first connecting block 9 and the second connecting block 15 are respectively provided with a first through hole 10 and a second through hole 14, and the first through hole and the second through hole are in 90-degree orthogonal design, so that the metering misalignment caused by the strong external torque force and the strong lateral force acting on the metering device is effectively avoided; for external forces from different directions, the stability time of the metering data is shortened, and the service life of the sensor is prolonged; the inner wall of the second through hole 14 is provided with an inward bulge 29 along the circumferential direction; the weighing sensor is provided with a three-dimensional acceleration sensor 4, the three-dimensional acceleration and direction parameters obtained by the three-dimensional acceleration sensor 4 are compared with the metering data collected in real time, whether the current position of the gripped scrap steel is in the rotating and amplitude changing process is known, and the results of the three-dimensional direction, the acceleration and the metering data are combined, and then the starting point or the terminal point of the heavy object needing to be metered are corrected appropriately. And a three-dimensional acceleration sensor is arranged, so that the waiting time for processing and stably judging the metering data is shortened.
Referring to fig. 3-4, the cross-sectional shape of the projection 29 may be rounded or may have other shapes that may be beneficial for increasing the stability of the load cell 5, such as: trapezoidal, etc.; the first through hole 10 is rotatably connected with the suspension block 3 through a shaft pin, the second through hole 14 is rotatably connected with the transmission block 6 through a shaft pin, a thread or conventional shackle assembly method is generally adopted when the traditional weighing sensor is connected with the upper part and the lower part, and the coaxiality between the sensor and the upper part and the lower part can be more effectively ensured through shaft pin connection, so that the influence of part of lateral force on the accuracy of the weighing sensor is avoided, and the response speed is also accelerated. The cross section of the shaft pin arranged in the second through hole 14 is in a concave arc shape matched with the protrusion 29, the shaft pin connected with the weighing sensor 5 is designed in the concave arc shape, the shaft pin is convenient to be matched with the second through hole 14 of the weighing sensor 5 for rotation, and the factor that the output signal of the sensor is unstable due to centripetal force and centrifugal force generated by a gripper is reduced to the minimum. In order to reduce the abrasion of the first through hole 10 and the second through hole 14 of the suspension block 3 and the transmission block 6 symmetrical weight sensor 5, the wear-resistant shaft sleeves 11 are arranged in the first through hole 10 and the second through hole 14, so that the service life of the weight sensor 5 is prolonged, and the shaft sleeves are convenient to replace and low in cost.
Referring to fig. 11-13, the transmission block 6 includes a first insertion block 22, the first insertion block 22 is connected to a second insertion block 25, a first insertion groove 23 is formed at the top of the first insertion block 22, and a second insertion groove 24 perpendicular to the first insertion groove 23 is formed on the second insertion block 25; the first inserting groove 23 is connected to the second connecting block 15 through a shaft pin, the second inserting groove 24 is connected with the grab bucket 7 through the shaft pin, and the mechanical damping of the shaft pin is increased from the suspension block to the grab handle through the mutually orthogonal design of the first through hole and the second through hole, so that most of external force which is from different directions and causes the grab handle to shake is absorbed and offset, the grabbing mechanism is promoted to reduce the shaking amplitude as soon as possible, and the shaking time is shortened.
Referring to fig. 17-19, the metering device further comprises a special secondary instrument, the special secondary instrument comprises a control circuit and a display screen 26, the control circuit is electrically connected with the three-dimensional acceleration sensor 4 and the induction circuit, the control circuit can synthesize data collected by the weighing sensor 5 and the three-dimensional acceleration sensor, adjust errors in real time, display the data on the display screen 26, and transmit the data to the touch screen 27 in real time through the communication module; when the instrument has an error, the display screen can display error prompt information, and the convenience of the metering device is improved.
Referring to fig. 21, the touch screen receives real-time data of the steel grabbing machine through communication with the secondary instrument and displays the data on the touch screen 27; reading and displaying specific information captured at this time from other equipment through a wireless transmission module, wherein the specific information comprises related information such as a capturing plan, a name, weight and the like; the touch screen is provided with a local server and is used for storing and acquiring data of the work of the steel grabbing machine; the data can be transferred to the outside from the local server in real time or after the steel grabbing machine finishes working.
In the embodiment of the invention, the crawler-type steel grabbing machine grabs the scrap steel through the grabbing hand, integrates and analyzes the data collected by the weighing sensor 5 and the three-dimensional acceleration sensor in the secondary instrument, transmits the data after error adjustment to the touch screen and displays the data on the touch screen, so that a worker can see the information such as the weight of the scrap steel in real time.
Referring to fig. 1-9, a second embodiment of the metering device of the crawler-type steel grabbing machine is shown, a bucket rod 1 and a grabbing mechanism 2 are arranged on the crawler-type steel grabbing machine, the grabbing mechanism 2 comprises a grab bucket 7 and a grab handle 8, the grab handle is generally a quincuncial grab handle or an electromagnetic chuck, the grabbing mechanism 2 further comprises a weighing sensor 5, one end of the weighing sensor 5 is connected to the bucket rod 1 through a hanging block 3, the weighing sensor 5 comprises an annular elastic body 12, and two concentric but non-through grooves 13 are formed in the outer walls of two sides of the annular elastic body 12; the connecting blocks comprise a first connecting block 9 and a second connecting block 15, and the first connecting block 9 and the second connecting block 15 are arranged at two ends of the annular elastic body 12 and are perpendicular to each other; the second connecting block 15 is rotationally connected with the grab bucket 7 through the transmission block 6; wherein: the wall between the grooves 13 is a sensing wall 18, the sensing wall 18 is provided with a sensing circuit which comprises resistance strain gauges 19 adhered on two side walls of the sensing wall 18, the resistance strain gauges 19 are electrically connected with various compensation resistors 20 for compensating errors in the circuit, when weight tension or pressure on a gripper of a steel gripper acts on an annular elastic body through a vertical central line of a sensor elastic body special for the steel gripper, a shear stress area forming 45 degrees with the vertical central line of the elastic body is generated on the sensing wall, millimeter paper 21 is adhered on the front and back surfaces of the shear stress area, so that the resistance strain gauges and the compensation resistors can be adhered subsequently, 4-piece 45-degree resistance strain gauges R1, R2, R3 and R4 are adhered on the shear stress area, wherein R1 and R2 are adhered on the front surface of the shear stress area, and R3 and R4 are adhered on the back surface of the shear stress area. The sensing circuit of the load cell 5 is formed by connecting resistance strain gauges R1, R2, R3 and R4 through a Wheatstone bridge circuit and compensation resistors, and is shown in FIG. 10; the end faces of the first connecting block 9 and the second connecting block 15 are respectively provided with a first through hole 10 and a second through hole 14, and the first through hole and the second through hole are in 90-degree orthogonal design, so that the metering misalignment caused by the strong external torque force and the strong lateral force acting on the metering device is effectively avoided; for external forces from different directions, the stability time of the metering data is shortened, and the service life of the sensor is prolonged; the inner wall of the second through hole 14 is provided with an inward bulge 29 along the circumferential direction; the weighing sensor is provided with a three-dimensional acceleration sensor 4, the three-dimensional acceleration and direction parameters obtained by the three-dimensional acceleration sensor 4 are compared with the metering data collected in real time, whether the current position of the gripped scrap steel is in the rotating and amplitude changing process is known, and the results of the three-dimensional direction, the acceleration and the metering data are combined, and then the starting point or the terminal point of the heavy object needing to be metered are corrected appropriately. And a three-dimensional acceleration sensor is arranged, so that the waiting time for processing and stably judging the metering data is shortened.
The difference from the first embodiment is that: in this embodiment, a voice prompt function of the touch screen is added on the basis of the first embodiment, referring to fig. 21, a wireless transmission module is arranged in the touch screen 27, and when the operation is finished, the information of capturing the steel scrap at this time can be transmitted to a user server or other equipment through the wireless transmission module for others to check; specific information captured at this time, including relevant information such as a captured plan, a name, weight and the like, is displayed on the touch screen and is watched by an operator; the touch screen 27 is also internally provided with a loudspeaker 28 for voice prompt, and when the system has an error, an operator can find the error in time through the voice automatic prompt of the loudspeaker; or when the next operation is needed, the voice prompt is carried out on the operator, so that the operation is convenient. The touch screen 27 is also electrically connected to a large screen display, and the large screen display can display related content and weight information for ground scheduling and viewing.
In the embodiment of the invention, the crawler-type steel grabbing machine grabs the scrap steel through the grabbing hand, integrates and analyzes the data collected by the weighing sensor 5 and the three-dimensional acceleration sensor in the secondary instrument, transmits the data after error adjustment to the touch screen and displays the data on the touch screen, so that a worker can see the information such as the weight of the scrap steel in real time, and the process of grabbing the scrap steel can be safer through voice alarm and voice prompt of the touch screen; the operating personnel can check the plan data of capturing the steel scrap through the wireless transmission function without copying the data in the local server, one step is omitted, and the method has very obvious effect on improving the production efficiency and the production quality. The touch screen is connected with the large screen display, so that the production command center at a distance can clearly see the planned data without checking back and forth.
Referring to fig. 1-9, a third embodiment of the metering device of the crawler-type steel grabbing machine is shown, a bucket rod 1 and a grabbing mechanism 2 are arranged on the crawler-type steel grabbing machine, the grabbing mechanism 2 comprises a grabbing bucket 7 and a grabbing hand 8, the grabbing hand is generally a quincuncial grab or an electromagnetic chuck, the grabbing mechanism 2 comprises a weighing sensor 5, one end of the weighing sensor 5 is connected to the bucket rod 1 through a suspension block 3, the weighing sensor 5 comprises an annular elastic body 12, and two concentric but non-through grooves 13 are formed in the outer walls of two sides of the annular elastic body 12; the connecting blocks comprise a first connecting block 9 and a second connecting block 15, and the first connecting block 9 and the second connecting block 15 are arranged at two ends of the annular elastic body 12 and are perpendicular to each other; the second connecting block 15 is rotationally connected with the grab bucket 7 through the transmission block 6; wherein: the wall between the grooves 13 is a sensing wall 18, the sensing wall 18 is provided with a sensing circuit which comprises resistance strain gauges 19 adhered on two side walls of the sensing wall 18, the resistance strain gauges 19 are electrically connected with various compensation resistors 20 for compensating errors in the circuit, when weight tension or pressure on a gripper of a steel gripper acts on an annular elastic body through a vertical central line of a sensor elastic body special for the steel gripper, a shear stress area forming 45 degrees with the vertical central line of the elastic body is generated on the sensing wall, millimeter paper 21 is adhered on the front and back surfaces of the shear stress area, so that the resistance strain gauges and the compensation resistors can be adhered subsequently, 4-piece 45-degree resistance strain gauges R1, R2, R3 and R4 are adhered on the shear stress area, wherein R1 and R2 are adhered on the front surface of the shear stress area, and R3 and R4 are adhered on the back surface of the shear stress area. The sensing circuit of the load cell 5 is formed by connecting resistance strain gauges R1, R2, R3 and R4 through a Wheatstone bridge circuit and compensation resistors, and is shown in FIG. 10; the end faces of the first connecting block 9 and the second connecting block 15 are respectively provided with a first through hole 10 and a second through hole 14, and the first through hole and the second through hole are in 90-degree orthogonal design, so that the metering misalignment caused by the strong external torque force and the strong lateral force acting on the metering device is effectively avoided; for external forces from different directions, the stability time of the metering data is shortened, and the service life of the sensor is prolonged; the inner wall of the second through hole 14 is provided with an inward bulge 29 along the circumferential direction; the weighing sensor is provided with a three-dimensional acceleration sensor 4, the three-dimensional acceleration and direction parameters obtained by the three-dimensional acceleration sensor 4 are compared with the metering data collected in real time, whether the current position of the gripped scrap steel is in the rotating and amplitude changing process is known, and the results of the three-dimensional direction, the acceleration and the metering data are combined, and then the starting point or the terminal point of the heavy object needing to be metered are corrected appropriately. And a three-dimensional acceleration sensor is arranged, so that the waiting time for processing and stably judging the metering data is shortened.
The difference from the second embodiment is that: in the embodiment, the oil filling nozzle and the aviation waterproof connector are added on the basis of the second embodiment, referring to fig. 1-4, the oil filling nozzle 17 communicated with the first through hole 10 is arranged on the outer wall of the first connecting block 9, and lubricating oil is added into the oil filling nozzle, so that the rotation between the wear-resistant shaft sleeve and the weighing sensor 5 can be smoother, and the wear is reduced; the electric wires at the two ends of the induction circuit extend to the outside through the annular elastic body 12 and are connected with an aviation waterproof joint 16, so that the circuit seepage of the weighing sensor 5 is prevented from being damaged, and the practicability of the metering device is further improved.
In the embodiment of the invention, the crawler-type steel grabbing machine grabs the scrap steel through the grabbing hand, integrates and analyzes the data collected by the weighing sensor 5 and the three-dimensional acceleration sensor in the secondary instrument, transmits the data after error adjustment to the touch screen and displays the data on the touch screen, so that a worker can see the information such as the weight of the scrap steel in real time, and the process of grabbing the scrap steel can be safer through voice alarm and voice prompt of the touch screen; the operating personnel can check the plan data of capturing the steel scrap through the wireless transmission function without copying the data in the local server, one step is omitted, and the method has very obvious effect on improving the production efficiency and the production quality. The touch screen is connected with the large screen display, and the data of the plan can be clearly seen even in a remote command center.
Referring to fig. 1-7, a fourth embodiment of the metering device of the crawler-type steel grabbing machine is provided, the crawler-type steel grabbing machine is provided with a bucket rod 1 and a grabbing mechanism 2, the grabbing mechanism 2 comprises a grab bucket 7 and a grab handle 8, the grab handle is generally a quincuncial grab handle or an electromagnetic chuck, the grabbing mechanism 2 comprises a weighing sensor 5, one end of the weighing sensor 5 is connected to the bucket rod 1 through a hanging block 3, the weighing sensor 5 comprises an annular elastic body 12, and two concentric but non-through grooves 13 are formed in the outer walls of two sides of the annular elastic body 12; the connecting blocks comprise a first connecting block 9 and a second connecting block 15, and the first connecting block 9 and the second connecting block 15 are arranged at two ends of the annular elastic body 12 and are perpendicular to each other; the second connecting block 15 is rotationally connected with the grab bucket 7 through the transmission block 6; wherein: the wall between the grooves 13 is an induction wall 18, the induction wall 18 is provided with an induction circuit which comprises resistance strain gauges 19 adhered to two side walls of the induction wall 18, the resistance strain gauges 19 are electrically connected with various compensation resistors 20 for compensating errors in the circuit, when the weight (tensile force or pressure) on a steel grabbing machine gripper acts on an annular elastic body through a vertical central line of a special sensor elastic body for the steel grabbing machine, a shear stress area forming 45 degrees with the vertical central line of the elastic body can be generated on the induction wall, millimeter paper 21 is adhered to the front side and the back side of the shear stress area, the resistance strain gauges and the compensation resistors can be conveniently adhered subsequently, and in order to ensure that the steel grabbing machine can be switched in time without influencing busy production rhythm under the condition of sudden failure of the sensor under severe working conditions, redundancy needs to be increased. Therefore, the elastic body shear stress sensitive area needs to be enlarged, all resistance strain gauges needed by double-circuit are all adhered to the same shear stress sensitive area, the sensitivity coefficient of double-circuit output is consistent, and referring to fig. 14-15, 8-piece 45-degree resistance strain gauges R1, R2, R3, R4, R5, R6, R7 and R8 are adhered to the shear stress sensitive area. Wherein R1, R2, R5 and R6 are pasted on the front surface of the blind hole web stress area, and R3, R4, R7 and R8 are pasted on the back surface of the blind hole web stress area. The resistance strain gauges R1, R2, R3 and R4 are connected and compensated by a Wiston bridge circuit to form a weighing sensor 5; through the connection and various compensations of the resistance strain gauges R1, R2, R3 and R4 of the Wheatstone bridge circuit, a weighing weight sensor 5 is formed; through the connection and various compensations of the resistance strain gauges R5, R6, R7 and R8 by the Wheatstone bridge circuit, another redundant weighing sensor 5 is formed for standby of the steel grasping machine, and the sensing circuit of the redundant two-way weighing sensor 5 is shown in fig. 10 and 16; the end faces of the first connecting block 9 and the second connecting block 15 are respectively provided with a first through hole 10 and a second through hole 14, and the first through hole and the second through hole are in 90-degree orthogonal design, so that the metering misalignment caused by the strong external torque force and the strong lateral force acting on the metering device is effectively avoided; for external forces from different directions, the stability time of the metering data is shortened, and the service life of the sensor is prolonged; the inner wall of the second through hole 14 is provided with an inward bulge 29 along the circumferential direction; the weighing sensor 5 is provided with a three-dimensional acceleration sensor 4, the three-dimensional acceleration and direction parameters obtained by the three-dimensional acceleration sensor 4 are compared with the metering data collected in real time, whether the current position of the gripped scrap steel is in the rotating and amplitude changing process is known, and the results of the three-dimensional direction, the acceleration and the metering data are combined, and then the starting point or the terminal point of the heavy object needing to be metered are corrected appropriately. And a three-dimensional acceleration sensor is arranged, so that the waiting time for processing and stably judging the metering data is shortened.
Referring to fig. 2-3, the cross-sectional shape of the projection 29 may be rounded or may have other shapes that may be beneficial for increasing the stability of the load cell 5, such as: trapezoidal, etc.; the end surfaces of the first connecting block 9 and the second connecting block 15 are respectively provided with a first through hole 10 and a second through hole 14, the first through hole 10 is rotatably connected with the suspension block 3 through a shaft pin, and the second through hole 14 is rotatably connected with the transmission block 6 through a shaft pin. Conventional load cells typically employ a threaded or conventional break-out assembly method for connecting the upper and lower components. Through the shaft pin connection, the coaxiality between the sensor and the upper and lower parts can be more effectively ensured, the influence of part of lateral force on the accuracy of the weighing sensor is avoided, and the response speed is accelerated. In order to reduce the abrasion of the first through hole and the second through hole of the suspension block and the transmission block symmetrical weight sensor 5, wear-resistant shaft sleeves 11 are arranged in the first through hole 10 and the second through hole 14, the service life of the weighing sensor is prolonged, and the shaft sleeves are convenient to replace and low in cost.
Referring to fig. 11-13, the transmission block 6 includes a first insertion block 22, the first insertion block 22 is connected to a second insertion block 25, a first insertion groove 23 is formed at the top of the first insertion block 22, and a second insertion groove 24 perpendicular to the first insertion groove 23 is formed on the second insertion block 25; the first inserting groove 23 is connected to the second connecting block 15 through a shaft pin, the second inserting groove 24 is connected with the grab bucket 7 through the shaft pin, and the mechanical damping of the shaft pin is increased from the suspension block to the grab handle through the mutually orthogonal design of the first through hole and the second through hole, so that most of external force which is from different directions and causes the grab handle to shake is absorbed and offset, the grabbing mechanism is promoted to reduce the shaking amplitude as soon as possible, and the shaking time is shortened.
Referring to fig. 17-20, the metering device further comprises a special secondary instrument, the special secondary instrument comprises a control circuit and a display screen 26, the control circuit is electrically connected with the three-dimensional acceleration sensor 4 and the induction circuit, the control circuit can synthesize data collected by the weighing sensor 5 and the three-dimensional acceleration sensor, adjust errors in real time, display the data on the display screen 26, and transmit the data to the touch screen 27 in real time through the communication module; when the instrument has an error, the display screen can display error prompt information, and the convenience of the metering device is improved.
Referring to fig. 21, the touch screen receives real-time data of the steel grabbing machine through communication with the secondary instrument and displays the data on the touch screen 27; reading and displaying specific information captured at this time from other equipment through a wireless transmission module, wherein the specific information includes related information such as a capturing plan, a name, weight and the like; the touch screen is provided with a local server and is used for storing and acquiring data of the work of the steel grabbing machine; and transferring the data to the outside from the local server in real time or after the steel grabbing machine finishes working.
In the embodiment of the invention, the crawler-type steel grabbing machine grabs the scrap steel through the grabbing hand, integrates and analyzes the data collected by the weighing sensor 5 and the three-dimensional acceleration sensor in a secondary instrument, transmits the data after error adjustment to the touch screen and displays the data on the touch screen, so that a worker can see the information such as the weight of the scrap steel in real time, and a one-use one-standby redundancy scheme is adopted: the secondary instrument simultaneously acquires two signals, when the main sensor is out of communication, the instrument displays error information and intelligently switches to the standby sensor, so that operation and production are not delayed; when the main sensor works normally and the standby sensor is not in communication, the instrument also prompts alarm information so that maintenance personnel can maintain and replace the main sensor in time.
Referring to fig. 1-7, a fifth embodiment of the metering device of the crawler-type steel grabbing machine is shown, a bucket rod 1 and a grabbing mechanism 2 are arranged on the crawler-type steel grabbing machine, the grabbing mechanism 2 comprises a grabbing bucket 7 and a grabbing hand 8, the grabbing hand is generally a quincuncial grabbing hand or an electromagnetic chuck, the grabbing mechanism 2 further comprises a weighing sensor 5, one end of the weighing sensor 5 is connected to the bucket rod 1 through a hanging block 3, the weighing sensor 5 comprises an annular elastic body 12, and two concentric but non-through grooves 13 are formed in the outer walls of two sides of the annular elastic body 12; the connecting blocks comprise a first connecting block 9 and a second connecting block 15, and the first connecting block 9 and the second connecting block 15 are arranged at two ends of the annular elastic body 12 and are perpendicular to each other; the second connecting block 15 is rotationally connected with the grab bucket 7 through the transmission block 6; wherein: the wall between the grooves 13 is an induction wall 18, the induction wall 18 is provided with an induction circuit which comprises resistance strain gauges 19 adhered to two side walls of the induction wall 18, the resistance strain gauges 19 are electrically connected with various compensation resistors 20 for compensating errors in the circuit, when the weight (tensile force or pressure) on a steel grabbing machine gripper acts on an annular elastic body through a vertical central line of a special sensor elastic body for the steel grabbing machine, a shear stress area forming 45 degrees with the vertical central line of the elastic body can be generated on the induction wall, millimeter paper 21 is adhered to the front side and the back side of the shear stress area, the resistance strain gauges and the compensation resistors can be conveniently adhered subsequently, and in order to ensure that the steel grabbing machine can be switched in time without influencing busy production rhythm under the condition of sudden failure of the sensor under severe working conditions, redundancy needs to be increased. Therefore, the elastic body shear stress sensitive area needs to be enlarged, all resistance strain gauges needed by double-circuit are all adhered to the same shear stress sensitive area, the sensitivity coefficient of double-circuit output is consistent, and referring to fig. 14-15, 8-piece 45-degree resistance strain gauges R1, R2, R3, R4, R5, R6, R7 and R8 are adhered to the shear stress sensitive area. Wherein R1, R2, R5 and R6 are pasted on the front surface of the blind hole web stress area, and R3, R4, R7 and R8 are pasted on the back surface of the blind hole web stress area. The resistance strain gauges R1, R2, R3 and R4 are connected and compensated by a Wiston bridge circuit to form a weighing sensor 5; through the connection and various compensations of the resistance strain gauges R1, R2, R3 and R4 of the Wheatstone bridge circuit, a weighing weight sensor 5 is formed; through the connection and various compensations of the resistance strain gauges R5, R6, R7 and R8 by the Wheatstone bridge circuit, another redundant weighing sensor 5 is formed for standby of the steel grasping machine, and the sensing circuit of the redundant two-way weighing sensor 5 is shown in fig. 10 and 16; the end faces of the first connecting block 9 and the second connecting block 15 are respectively provided with a first through hole 10 and a second through hole 14, and the first through hole and the second through hole are in 90-degree orthogonal design, so that the metering misalignment caused by the strong external torque force and the strong lateral force acting on the metering device is effectively avoided; for external forces from different directions, the stability time of the metering data is shortened, and the service life of the sensor is prolonged; the inner wall of the second through hole 14 is provided with an inward bulge 29 along the circumferential direction; the weighing sensor 5 is provided with a three-dimensional acceleration sensor 4, the three-dimensional acceleration and direction parameters obtained by the three-dimensional acceleration sensor 4 are compared with the metering data collected in real time, whether the current position of the gripped scrap steel is in the rotating and amplitude changing process is known, and the results of the three-dimensional direction, the acceleration and the metering data are combined, and then the starting point or the terminal point of the heavy object needing to be metered are corrected appropriately. And a three-dimensional acceleration sensor is arranged, so that the waiting time for processing and stably judging the metering data is shortened.
The difference from the fourth embodiment is that: in the embodiment, a voice prompt function of the touch screen is added on the basis of the fourth embodiment, referring to fig. 21, a wireless transmission module is arranged in the touch screen 27, and when the operation is finished, the information of capturing the steel scrap at this time can be transmitted to a user server or other equipment through the wireless transmission module for others to check; specific information captured at this time, including relevant information such as a captured plan and a name of the article, is displayed on the touch screen and is watched by an operator; the touch screen 27 is also internally provided with a loudspeaker 28 for voice prompt, and when an error occurs, an operator can find the error in time through the loudspeaker; or when the next operation is needed, the prompt is given to the operator, so that the operation is convenient. The touch screen 27 is also electrically connected to a large screen display, and the large screen display can display related content and weight information for ground scheduling and viewing.
In the embodiment of the invention, the crawler-type steel grabbing machine grabs the scrap steel through the grabbing hand, integrates and analyzes the data collected by the weighing sensor 5 and the three-dimensional acceleration sensor in a secondary instrument, transmits the data after error adjustment to the touch screen and displays the data on the touch screen, so that a worker can see the information such as the weight of the scrap steel in real time, and a one-use one-standby redundancy scheme is adopted: the secondary instrument simultaneously acquires two signals, when the main sensor is out of communication, the instrument displays error information and intelligently switches to the standby sensor, so that operation and production are not delayed; when the main sensor works normally and the standby sensor is not communicated, the instrument also prompts alarm information so that maintenance personnel can maintain and replace the standby sensor in time; the process of grabbing the scrap steel can be safer through the voice alarm and the voice prompt of the touch screen; the operating personnel can check the plan data of capturing the steel scrap through the wireless transmission function without copying the data in the local server, one step is omitted, and the method has very obvious effect on improving the production efficiency and the production quality. The touch screen is connected with the large screen display, so that the data information of the plan can be clearly seen even in a remote command center without being checked back and forth.
Referring to fig. 1-7, a sixth embodiment of the metering device of the crawler-type steel grabbing machine is shown, a bucket rod 1 and a grabbing mechanism 2 are arranged on the crawler-type steel grabbing machine, the grabbing mechanism 2 comprises a grabbing bucket 7 and a grabbing hand 8, the grabbing hand is generally a quincuncial grabbing hand or an electromagnetic chuck, the grabbing mechanism 2 comprises a weighing sensor 5, one end of the weighing sensor 5 is connected to the bucket rod 1 through a hanging block 3, the weighing sensor 5 comprises an annular elastic body 12, and two concentric but non-through grooves 13 are formed in the outer walls of two sides of the annular elastic body 12; the connecting blocks comprise a first connecting block 9 and a second connecting block 15, and the first connecting block 9 and the second connecting block 15 are arranged at two ends of the annular elastic body 12 and are perpendicular to each other; the second connecting block 15 is rotationally connected with the grab bucket 7 through the transmission block 6; wherein: the wall between the grooves 13 is an induction wall 18, the induction wall 18 is provided with an induction circuit which comprises resistance strain gauges 19 adhered to two side walls of the induction wall 18, the resistance strain gauges 19 are electrically connected with various compensation resistors 20 for compensating errors in the circuit, when the weight (tensile force or pressure) on a steel grabbing machine gripper acts on an annular elastic body through a vertical central line of a special sensor elastic body for the steel grabbing machine, a shear stress area forming 45 degrees with the vertical central line of the elastic body can be generated on the induction wall, millimeter paper 21 is adhered to the front side and the back side of the shear stress area, the resistance strain gauges and the compensation resistors can be conveniently adhered subsequently, and in order to ensure that the steel grabbing machine can be switched in time without influencing busy production rhythm under the condition of sudden failure of the sensor under severe working conditions, redundancy needs to be increased. Therefore, the elastic body shear stress sensitive area needs to be enlarged, all resistance strain gauges needed by double-circuit are all adhered to the same shear stress sensitive area, the sensitivity coefficient of double-circuit output is consistent, and referring to fig. 14-15, 8-piece 45-degree resistance strain gauges R1, R2, R3, R4, R5, R6, R7 and R8 are adhered to the shear stress sensitive area. Wherein R1, R2, R5 and R6 are pasted on the front surface of the blind hole web stress area, and R3, R4, R7 and R8 are pasted on the back surface of the blind hole web stress area. The resistance strain gauges R1, R2, R3 and R4 are connected and compensated by a Wiston bridge circuit to form a weighing sensor 5; through the connection and various compensations of the resistance strain gauges R1, R2, R3 and R4 of the Wheatstone bridge circuit, a weighing weight sensor 5 is formed; through the connection and various compensations of the resistance strain gauges R5, R6, R7 and R8 by the Wheatstone bridge circuit, another redundant weighing sensor 5 is formed for standby of the steel grasping machine, and the sensing circuit of the redundant two-way weighing sensor 5 is shown in fig. 10 and 16; the end faces of the first connecting block 9 and the second connecting block 15 are respectively provided with a first through hole 10 and a second through hole 14, and the first through hole and the second through hole are in 90-degree orthogonal design, so that the metering misalignment caused by the strong external torque force and the strong lateral force acting on the metering device is effectively avoided; for external forces from different directions, the stability time of the metering data is shortened, and the service life of the sensor is prolonged; the inner wall of the second through hole 14 is provided with an inward bulge 29 along the circumferential direction; the weighing sensor 5 is provided with a three-dimensional acceleration sensor 4, the three-dimensional acceleration and direction parameters obtained by the three-dimensional acceleration sensor 4 are compared with the metering data collected in real time, whether the current position of the gripped scrap steel is in the rotating and amplitude changing process is known, and the results of the three-dimensional direction, the acceleration and the metering data are combined, and then the starting point or the terminal point of the heavy object needing to be metered are corrected appropriately. And a three-dimensional acceleration sensor is arranged, so that the waiting time for processing and stably judging the metering data is shortened.
The difference from the fifth embodiment is that: in the embodiment, an oil filling nozzle and an aviation waterproof connector 16 are added on the basis of the fifth embodiment, referring to fig. 1-4, an oil filling nozzle 17 communicated with the first through hole 10 is arranged on the outer wall of the first connecting block 9, lubricating oil is added into the oil filling nozzle, so that the rotation between the wear-resistant shaft sleeve and the weighing sensor 5 can be smoother, and the wear is reduced; the electric wires at the two ends of the induction circuit extend to the outside through the annular elastic body 12 and are connected with an aviation waterproof joint 16, so that the circuit seepage of the weighing sensor 5 is prevented from being damaged, and the practicability of the metering device is further improved.
In the embodiment of the invention, the crawler-type steel grabbing machine grabs the scrap steel through the grabbing hand, integrates and analyzes the data collected by the weighing sensor 5 and the three-dimensional acceleration sensor in a secondary instrument, transmits the data after error adjustment to the touch screen and displays the data on the touch screen, so that a worker can see the information such as the weight of the scrap steel in real time, and a one-use one-standby redundancy scheme is adopted: the secondary instrument simultaneously acquires two signals, when the main sensor is out of communication, the instrument displays error information and intelligently switches to the standby sensor, so that operation and production are not delayed; when the main sensor works normally and the standby sensor is not communicated, the instrument also prompts alarm information so that maintenance personnel can maintain and replace the standby sensor in time; the process of grabbing the scrap steel can be safer through the voice alarm and the voice prompt of the touch screen; the operating personnel can check the plan data of capturing the steel scrap through the wireless transmission function without copying the data in the local server, one step is omitted, and the method has very obvious effect on improving the production efficiency and the production quality. The touch screen is connected with the large screen display, and the data of the plan can be clearly seen even in a remote command center.
The above description is only an embodiment of the present invention, but the technical features of the present invention are not limited thereto, and any changes or modifications within the technical field of the present invention by those skilled in the art are covered by the claims of the present invention.
Claims (10)
1. The utility model provides a crawler-type steel machine metering device of grabbing, the crawler-type is grabbed and is equipped with dipper (1) on the steel machine and snatchs mechanism (2), snatch mechanism (2) and include grab bucket (7) and tongs (8), its characterized in that: the grabbing mechanism (2) further comprises a weighing sensor (5), one end of the weighing sensor (5) is connected to the bucket rod (1) through a suspension block (3), and the weighing sensor (5) comprises
The elastic ring is characterized by comprising an annular elastic body (12), wherein two concentric but non-through grooves (13) are formed in the outer walls of two sides of the annular elastic body (12);
the connecting block comprises a first connecting block (9) and a second connecting block (15), the first connecting block (9) and the second connecting block (15) are arranged at two ends of the annular elastic body (12) and are perpendicular to each other, and the second connecting block (15) is rotatably connected with the grab bucket (7) through the transmission block (6);
wherein: the wall between the grooves (13) is an induction wall (18), an induction circuit is arranged on the induction wall (18) and comprises resistance strain sheets (19) adhered to two side walls of the induction wall (18), and the resistance strain sheets (19) are electrically connected with compensation resistors (20) and used for compensating errors in the circuit;
the end faces of the first connecting block (9) and the second connecting block (15) are respectively provided with a first through hole (10) and a second through hole (14), and the inner wall of the second through hole (14) is provided with an inward protrusion (29) along the circumferential direction;
and the weighing sensor (5) is provided with a three-dimensional acceleration sensor (4) for acquiring three-dimensional acceleration and direction parameters of the grabbing mechanism (2).
2. The crawler-type steel grab metering device of claim 1, wherein: the cross section of the bulge (29) is arc-shaped; the first through hole (10) is rotatably connected with the suspension block (3) through a shaft pin, and the second through hole (14) is rotatably connected with the transmission block (6) through a shaft pin.
3. The crawler steel grab metering device of claim 2, wherein: the cross section of the shaft pin arranged in the second through hole (14) is in a concave arc shape matched with the bulge (29).
4. The crawler-type steel grab metering device of claim 1 or 2, characterized in that: and a wear-resistant shaft sleeve (11) is arranged in the first through hole (10).
5. The crawler-type steel grab metering device of claim 1, wherein: the transmission block (6) comprises a first insertion block (22), the first insertion block (22) is connected with a second insertion block (25), a first insertion groove (23) is formed in the top of the first insertion block (22), and a second insertion groove (24) which is perpendicular to the first insertion groove (23) is formed in the second insertion block (25); the first insertion groove (23) is connected to the second connecting block (15) through a shaft pin, and the second insertion groove (24) is connected with the grab bucket (7) through the shaft pin.
6. The crawler-type steel grab metering device of claim 1, wherein: metering device still includes special secondary instrument, special secondary instrument includes control circuit, display screen (26), communication module and touch-sensitive screen (27), control circuit is connected with three-dimensional acceleration sensor (4) and induction circuit electricity, and control circuit can synthesize the data that weighing sensor (5) and three-dimensional acceleration sensor (4) gathered, adjusts the error in real time and with data display on display screen (26) to give touch-sensitive screen (27) data real-time transmission through communication module.
7. The crawler steel grab metering device of claim 6, wherein: the control circuit is electrically connected with the touch screen (27), and a wireless transmission module is arranged in the touch screen (27); and a loudspeaker (28) is arranged in the touch screen (27) and used for carrying out voice prompt.
8. The crawler steel grab metering device of claim 7, wherein: the touch screen (27) is electrically connected with a large screen display.
9. The crawler-type steel grab metering device of claim 1, wherein: an oil filling nozzle (17) communicated with the first through hole (10) is arranged on the outer wall of the first connecting block (9).
10. The crawler-type steel grab metering device of claim 1 or 6, characterized in that: the electric wires at two ends of the induction circuit extend to the outside through the annular elastic body (12) and are connected with an aviation waterproof connector (16).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911010138.9A CN110779601A (en) | 2019-10-23 | 2019-10-23 | Crawler-type steel grabbing machine metering device |
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| CN201911010138.9A CN110779601A (en) | 2019-10-23 | 2019-10-23 | Crawler-type steel grabbing machine metering device |
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| CN208476369U (en) * | 2018-07-21 | 2019-02-05 | 浙江蓝箭称重技术有限公司 | A kind of weighing sensor |
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| CN2898781Y (en) * | 2006-03-28 | 2007-05-09 | 何学勇 | Special weighing sensor for electronic hung balance |
| CN101467011A (en) * | 2006-04-20 | 2009-06-24 | Cmte开发有限公司 | Payload estimation system and method |
| CN105122023A (en) * | 2013-07-09 | 2015-12-02 | 日立建机株式会社 | Load detection device and working machine provided with same |
| CN206142711U (en) * | 2016-10-31 | 2017-05-03 | 广州江迪港口机械有限公司 | Port crane with alarming function weighs |
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