CN218381272U - Weighing and checking device for mixing station - Google Patents
Weighing and checking device for mixing station Download PDFInfo
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- CN218381272U CN218381272U CN202222211865.5U CN202222211865U CN218381272U CN 218381272 U CN218381272 U CN 218381272U CN 202222211865 U CN202222211865 U CN 202222211865U CN 218381272 U CN218381272 U CN 218381272U
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Abstract
The utility model discloses a weighing and checking device of a mixing station, which comprises a cross beam, anchoring parts and two sets of force measuring components, wherein the cross beam is erected above a measuring weighing hopper, and the anchoring parts are fixedly arranged on an operating platform; the force measuring assembly comprises a hydraulic jack, a tension sensor, an adjusting screw rod, a locking nut and a cylindrical supporting assembly, the hydraulic jack is placed on the horizontal cross beam, the cylindrical supporting assembly is sleeved on a cylinder body of the hydraulic jack, the upper end of the tension sensor is rotatably connected with the cylindrical supporting assembly, and the lower end of the tension sensor is hooked on the anchoring piece. The utility model discloses a whether reading of comparison force sensor is the same with weighing sensor's reading can carry out the check-up of measurement title. The manual work is saved, the checking efficiency is improved, and the potential safety hazard caused by manual weight carrying is avoided.
Description
Technical Field
The utility model relates to a concrete mixing plant technical field, concretely relates to mixing plant calibration equipment that weighs.
Background
The concrete mixing plant needs to mix various raw materials, such as cement, coarse and fine aggregates, mineral admixture, mixing water and the like, according to different mass proportions to prepare concrete with different strength grades and purposes, and all the raw materials need to be accurately metered by different metering scales to ensure the production quality of the concrete. Accurate measurement of raw materials is particularly important for nuclear power engineering, and the quality of a concrete structure is directly related to whether the nuclear power plant can safely and stably operate in a service period. In order to ensure the accuracy of the measurement, the accuracy of the scale needs to be checked after the scale is used for a period of time.
The traditional method for verifying the weighing scale comprises the steps of placing a standard weight on the weighing scale, comparing the difference between the weighing weight and the weight, taking down the weight to calibrate the weighing scale when the difference exceeds a verification requirement, namely the verification is unqualified, and placing the weight on the weighing scale again to verify again after the calibration is finished until a verification result meets the requirement of the measurement precision. For example, one 2m 3 The concrete mixer set is generally provided with about 5 aggregate weighers with 2000kg range, about 5 powder weighers with 1000kg range and about 2 additive weighers with 50kg range or less; each time the weigher load test is performed, standard weights (25 kg/weight) need to be manually conveyed to the weigher hopper, each aggregate weigher needs to convey about 2000kg weights during the full-scale test, other weighers are analogized, and one stirring unit needs to convey 15000kg weights in total.
In conclusion, the traditional method for verifying the metering scale needs the cooperation of a plurality of personnel, and has the disadvantages of large workload, more potential safety hazards and low efficiency.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problem, the utility model provides a stirring station calibration equipment that weighs.
The utility model adopts the technical scheme that:
a weighing and checking device for a mixing station comprises a cross beam, anchoring parts and two sets of force measuring assemblies, wherein the cross beam is horizontally erected above a metering weighing hopper, the central line of the cross beam is superposed with the central line of the metering weighing hopper, and the two sets of force measuring assemblies are symmetrically arranged at two ends of the cross beam; the two anchoring parts are fixedly arranged on an operation platform of the metering weighing hopper in a one-to-one correspondence manner with the force measuring assemblies; the force measuring assembly comprises a hydraulic jack, a tension sensor, an adjusting screw rod, a locking nut and a cylindrical support assembly, wherein the cylindrical support assembly comprises a cylinder with a bottom at the top end and two connecting arms with the upper ends connected to the open end of the cylinder; the hydraulic jack is placed on the horizontal cross beam, the bottom of the cylinder is sleeved on a cylinder body of the hydraulic jack in an upward sliding mode, the lower ends of the two connecting arms vertically extend downwards to the lower portion of the cross beam along the two sides of the cross beam, the upper end of the tension sensor is rotatably connected with the two connecting arms through first hinge pins, and the lower ends of the tension sensor are hooked on the anchoring piece; the lower end of the adjusting screw vertically and downwards spirally penetrates through a threaded hole in the center of the bottom of the cylinder and extends into the cylinder, a plunger of the hydraulic jack vertically and upwards extends out and is supported on the bottom surface of the adjusting screw, and the locking nut is sleeved on the upper end of the adjusting screw in a spiral mode and used for locking the adjusting screw.
The utility model discloses a set up hydraulic jack and force sensor, through hydraulic jack to the measurement balance normal pressure of exerting pressure to the value of normal pressure is shown through force sensor, and force sensor is precalibrated, and whether reading through comparison force sensor is the same with weighing sensor's reading can carry out the check-up of measurement balance.
Further, the measuring assembly further comprises a level gauge for measuring the levelness of the top surface of the cylinder. The force applied to the metering weighing hopper by the hydraulic jack can be indirectly measured through the level gauge, and whether the force is in the plumb direction or not is determined, so that the measurement error is reduced.
Furthermore, the adjusting screw is a universal foot cup, and the base of the universal foot cup is abutted against the top surface of the plunger of the hydraulic jack. The screw rod of the universal foot cup is connected with the base through the ball head, so that when the adjusting screw rod is rotated, the force of the screw rod acting on the base is always along the plumb direction, the top surface of the cylinder is always in the horizontal plane, and the force of the hydraulic jack exerted on the metering weighing hopper is always positive pressure in the plumb direction.
Further, the upper end of the adjusting screw rod is provided with a handle. The handle facilitates rotation of the adjusting screw to adjust its elongation within the barrel, and may also be used to lift the verification device.
Furthermore, the two connecting arms are rotatably connected with the cylinder through a second pin shaft, and the central axis of the second pin shaft radially penetrates through the cylinder. The connecting arm is respectively and rotatably connected with the cylinder and the tension sensor through the first pin shaft and the second pin shaft, so that the cylinder and the tension sensor are more conveniently connected and are easier to have the same axle center.
The device further comprises a remote controller, wherein the remote controller is used for controlling the zero setting, the peeling and the synchronous display of real-time numerical values on the tension sensor, and starting and stopping the device. The setting up of remote controller makes the check-up of measurement title more convenient, and the demonstration that the stirring station measurement was weighed generally all sets up in the control room, and the control room is generally far away from the installation site of measurement title, and through setting up the remote controller, operating personnel can be in the control room more directly perceivedly whether the numerical value that the comparison force sensor shows is unanimous with the vertical that weighing sensor shows, more conveniently realizes the check-up of measurement title.
The utility model has the advantages that: the utility model discloses a set up hydraulic jack and force sensor, through hydraulic jack to the weigher normal pressure that exerts pressure to the weigher to the value of normal pressure shows through force sensor, and force sensor calibrates in advance, and whether reading through comparison force sensor is the same with weighing sensor's reading can carry out the check-up of weigher, has saved the manual work, has improved check-up efficiency, has stopped because of the potential safety hazard that artifical transport weight caused. And, the utility model discloses a check-up device does not have stopped the risk that causes the damage to the measurement scale is fought with the inside contact of measurement scale, the utility model discloses simple structure, installation check-up convenient operation, the reliability is high.
Drawings
Fig. 1 is the utility model discloses a stirring station calibration equipment that weighs's structural schematic.
Fig. 2 is a side view of fig. 1.
Fig. 3 is a schematic structural view of the cylindrical support assembly of the present invention.
Detailed Description
The present invention is further described below with reference to specific examples to facilitate understanding of the present invention, but the present invention is not limited thereto.
Referring to fig. 1, for convenience of feeding and discharging, the weighing scale of the mixing plant is generally configured as a suspended weighing scale, as shown in fig. 1, the weighing scale 100 is suspended at the bottom of the storage bin through four supporting points, four weighing sensors 101 are arranged at the four supporting points, and the weighing scale 100 is generally configured in a shape of a quadrangular frustum pyramid with a large top and a small bottom.
Example 1
Referring to fig. 1 to 3, the embodiment provides a weighing and checking device for a mixing station, which includes a beam 1, an anchoring member 2 and two sets of force measuring assemblies.
The crossbeam 1 is used for supporting the force measuring assembly and converting the jacking force of a hydraulic jack 7 in the force measuring assembly into positive pressure to be transmitted to the metering weighing hopper 100. In specific implementation, I-steel or hollow square steel can be selected as the cross beam 1, the length of the cross beam is larger than the width of the weighing hopper 100, and the cross beam is enough to support a force measuring assembly positioned right above the anchoring piece 2. When the beam 1 is erected above the weighing scale hopper 100, the upper side surface of the beam is in a horizontal plane, so that the pressure applied to the weighing scale hopper 100 by the hydraulic jack 7 is in a plumb direction, the tension measured by the tension sensor 4 is equal to the positive pressure applied to the weighing scale hopper 100 by the hydraulic jack 7, and the calibration accuracy is ensured.
The anchoring part 2 is used as a tension point for fixing a tension sensor 4 in the force measuring assembly, preferably, the anchoring part 2 is a chemical anchor bolt with a hook, the operating platform 200 of the weighing hopper is generally a concrete platform, and the chemical anchor bolt is convenient for the installation and the fixation of the anchoring part 2. When the operation platform 200 is a steel platform, a common hook can be selected to be welded with the steel platform. The anchoring member 2 can be used for a long time after being installed. The center line of the length direction of the weighing hopper 100 is found, the anchoring pieces 2 are fixed on the operating platform 200 right below the center line, the two anchoring pieces 2 are symmetrically arranged on two sides of the weighing hopper 100, the distance between the top surface of each weighing hopper and the operating platform of the weighing hopper is also considered when the anchoring pieces are installed due to the universality, and the distance between the top surface of each weighing hopper and the operating platform of the weighing hopper is basically consistent by adjusting the installation height of the anchoring pieces.
The force measuring assembly comprises a hydraulic jack 7, a tension sensor 4, an adjusting screw rod 10, a locking nut 9 and a cylindrical supporting assembly.
The hydraulic jack 7 is in the prior art, preferably, the hydraulic jack is a separated manual hydraulic jack and comprises an oil pump and a jack, an oil pipe of the oil pump is connected with the jack during measurement, and the plunger is lifted through manual pressing.
The tension sensor 4 is used for measuring the jacking force of the hydraulic jack, and preferably, the tension sensor 4 has digital display and remote control functions. In this embodiment, a MH-W3 wireless force measuring instrument manufactured by shanghai sweet jar instruments ltd is used as the tension sensor 4, two tension ends of the sensor are provided with connecting rings 3 or pin holes and are matched with a remote controller, and the remote controller is used for controlling the zero setting, the peeling and the synchronous display of real-time values on the sensor, and starting and stopping the sensor.
The cylindrical supporting component comprises a cylinder 8 and a connecting arm 6, one end of the cylinder 8 is closed, the other end of the cylinder is open, a bottom cover is arranged at the closed end, and a threaded through hole matched with the adjusting screw rod is axially arranged at the center of the bottom cover. The connecting arms 6 are two in number, and the length of the connecting arms needs to be larger than the height of the cross beam 1. During specific implementation, the strip-shaped steel plate can be selected as the connecting arm, the upper end of the connecting arm 6 can be vertically welded on two sides of the central part of the open end of the cylinder 8, a hole can also be formed in the upper end of the connecting arm 6, short cylinders, namely the second pin shaft 15, are radially welded on two sides of the central part of the open end of the cylinder 8, and the upper end of the connecting arm 6 is arranged in the second pin shaft 15 in a penetrating mode. In order to prevent the connecting arm 6 from separating from the second pin 15, a pin hole may be formed in the outer end of the second pin 15, and a positioning pin is inserted into the pin hole to prevent the connecting arm 6 from falling off. The lower end of the connecting arm 6 is provided with a pin hole, so that the first pin shaft 5 penetrates through the pin hole and the ring at the upper end of the tension sensor 4, and the connecting arm 6 and the tension sensor 4 are connected together.
The lower end of the adjusting screw rod 10 vertically and downwards spirally penetrates through the threaded through hole of the bottom cover of the cylinder and extends into the cylinder, and the locking nut 9 is spirally sleeved at the upper end of the adjusting screw rod 10.
Preferably, a round bar 11 is inserted into the upper end of the adjusting screw 10 as a handle for pulling and rotating the screw. The preferred universal foot cup that will have now uses as adjusting screw to make the base of universal foot cup support the top surface that leans on hydraulic jack 7's plunger, increase adjusting screw and hydraulic jack's area of contact and when making to rotate adjusting screw, adjusting screw and hydraulic jack's action point is in on the plumb line all the time.
Method for verifying a weigh hopper 100 using the mixing station weigh verification apparatus described in example 1:
1) Firstly, horizontally erecting a beam 1 above a metering weighing hopper 100 to ensure that the central line of the beam 1 is superposed with the central line of the metering weighing hopper 100;
2) After the bottom of the cylinder 8 is upwards sleeved on the hydraulic jack 7, the hydraulic jack 7 and the cylinder 8 are placed on the upper side face of the horizontal beam 1, meanwhile, the two connecting arms 6 penetrate through the beam 1, and at the moment, the distance of the adjusting screw 10 extending into the cylinder 8 is shortest;
3) The hydraulic jack 7 and the cylinder 8 are moved left and right, so that the centers of the hydraulic jack 7, the cylinder 8 and the tension sensor 4 are positioned on the same plumb line;
4) Hooking a lower end ring 3 of a tension sensor 4 on an anchoring part 2, loosening a locking nut 9, positively rotating an adjusting screw 10, continuing to positively rotate the screw after the bottom surface of the adjusting screw 10 contacts the top surface of a hydraulic jack 7, lifting a cylinder 8 away from a cross beam 1, and tensioning the tension sensor 4 by an upper fulcrum and a lower fulcrum but not in a stressed state;
5) Connecting a cylinder body of a hydraulic jack with an oil pipe of a hydraulic pump;
6) Opening a power switch on the tension sensor 4 to initialize and zero;
7) Zeroing the load cell;
8) Starting the hydraulic pump to lift the plunger of the hydraulic jack 7 upwards; the jacking force of the hydraulic jack 7 is the positive pressure applied to the weighing hopper 100 through the cross beam 1;
9) Comparing the sum of the force values F1 and F2 displayed by the two tension sensors 41 and 42 with the value displayed by the weighing sensor of the weighing scale, if the two readings are the same, calibrating the weighing hopper is not needed, and if the two readings are different, calibrating the weighing sensor; after calibration, repeating the steps 5-9 until the two readings are the same;
10 The hydraulic jack 7 and the adjusting screw 10 are returned to the initial position, the hydraulic pump is stopped, the oil pipe is removed, and the weighing device is moved to another weighing scale to be verified.
In step 6, the remote controller can be started to initialize and zero, and whether the numerical value on the tension sensor and the numerical value displayed on the remote controller are synchronous or not is observed; in step 9, the scale is verified by comparing whether the readings from the remote control and the load cell are the same.
The setting up of remote controller makes the check-up of measurement title more convenient, and the demonstration that the stirring station measurement was weighed generally all sets up in the control room, and the control room is generally far away from the installation site of measurement title, and through setting up the remote controller, operating personnel can be in the control room more directly perceivedly whether the numerical value that the comparison force sensor shows is unanimous with the vertical that weighing sensor shows, more conveniently realizes the check-up of measurement title.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations are also within the protection scope of the present invention.
Claims (6)
1. A weighing and checking device for a mixing station is characterized by comprising a cross beam, an anchoring part and two sets of force measuring components, wherein the cross beam is horizontally erected above a metering weighing hopper, the central line of the cross beam is superposed with the central line of the metering weighing hopper, and the two sets of force measuring components are symmetrically arranged at two ends of the cross beam; the two anchoring parts are fixedly arranged on an operation platform of the metering weighing hopper in a one-to-one correspondence manner with the force measuring assemblies; the force measuring assembly comprises a hydraulic jack, a tension sensor, an adjusting screw rod, a locking nut and a cylindrical support assembly, wherein the cylindrical support assembly comprises a cylinder with a bottom at the top end and two connecting arms with the upper ends connected to the open end of the cylinder; the hydraulic jack is placed on the horizontal cross beam, the bottom of the cylinder is sleeved on a cylinder body of the hydraulic jack in an upward sliding mode, the lower ends of the two connecting arms vertically extend downwards to the lower portion of the cross beam along the two sides of the cross beam, the upper end of the tension sensor is rotatably connected with the two connecting arms through first hinge pins, and the lower ends of the tension sensor are hooked on the anchoring piece; the lower end of the adjusting screw vertically and downwards spirally penetrates through a threaded hole in the center of the bottom of the cylinder and extends into the cylinder, a plunger of the hydraulic jack vertically and upwards extends out and is supported on the bottom surface of the adjusting screw, and the locking nut is sleeved on the upper end of the adjusting screw in a spiral mode and used for locking the adjusting screw.
2. The weigh scale apparatus of claim 1, wherein the measuring assembly further comprises a level gauge for measuring a levelness of the top surface of the drum.
3. The mixing station weight verification device of claim 1, wherein the adjustment screw is a castor, the base of the castor abutting against the top surface of the hydraulic jack plunger.
4. The weigh scale apparatus of claim 1, wherein the adjusting screw has a handle at an upper end thereof.
5. The mixing station weight verification device according to claim 1, wherein the two connecting arms are rotatably connected to the cylinder by a second pin, and a central axis of the second pin radially passes through the cylinder.
6. The weigh verification apparatus of claim 1, further comprising a remote controller for controlling the force sensor to zero, peel, synchronously display real time values on the force sensor, power on and power off.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222211865.5U CN218381272U (en) | 2022-08-22 | 2022-08-22 | Weighing and checking device for mixing station |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222211865.5U CN218381272U (en) | 2022-08-22 | 2022-08-22 | Weighing and checking device for mixing station |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218381272U true CN218381272U (en) | 2023-01-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222211865.5U Active CN218381272U (en) | 2022-08-22 | 2022-08-22 | Weighing and checking device for mixing station |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218381272U (en) |
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2022
- 2022-08-22 CN CN202222211865.5U patent/CN218381272U/en active Active
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