Device for detecting accuracy of metering value of concrete batching scale

Abstract

A concrete batching scale metering value accuracy detection device comprises a supporting frame, a hopper suspended in the middle of the supporting frame and a weighing sensor arranged between the supporting frame and the hopper, positioning blocks are fixedly arranged on the front side wall and the rear side wall of the hopper, the two ends of the weighing sensor are connected with the positioning blocks and the supporting frame through lifting hooks respectively, and a detection mechanism is arranged above the hopper; the detection mechanism comprises a positioning frame arranged above the middle of the hopper, adjusting bolts are symmetrically installed on the side wall of the positioning frame, one ends of the adjusting bolts are connected with the positioning base through steel ropes, the steel ropes are connected to the upper edge of the hopper in a pressed mode, the other ends of the adjusting bolts penetrate and stretch into the inner side of the positioning frame and are locked through locking nuts, and tension meters are installed at the ends, close to the adjusting bolts, of the steel ropes. According to the device, the steel rope is tightened through the relative movement of the adjusting bolt and the positioning frame, downward pressure is formed on the hopper through the steel rope, loading is achieved, then the numerical values of the tension meter and the weighing sensor are observed, compared and adjusted, and therefore weight-free calibration is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of static detection of the measurement accuracy of a concrete batching scale, in particular to a device for detecting the measurement value accuracy of a concrete batching scale. Background Art

[0002] In the production process of ready-mixed concrete, the concrete ingredients are input into the control equipment according to the determined mix ratio, and the raw materials such as gravel, sand, cement, water and additives are automatically weighed, conveyed, mixed and unloaded into the transport tanker through the weighing control system according to the concrete mix ratio. The weighing and metering control equipment of the raw materials - the reliable measurement accuracy of the concrete batching scale is particularly important, which is related to the product quality of the concrete and also affects the cost control of the production enterprise. Therefore, it is necessary to calibrate the accuracy of the force value of the concrete batching scale. The traditional calibration method is to load a certain amount of weights in the hopper, compare and adjust the weight value with the scale reading, and realize the calibration of the scale value. This method of loading with weights has many disadvantages. First, it is difficult to reach the maximum weighing due to the narrow working surface; second, the transportation and loading and unloading of weights consume a lot of manpower, which brings a heavy burden to the inspected unit and is extremely unfavorable for the calibration of the accuracy of the batching scale. Utility Model Content

[0003] In view of the deficiencies existing in the above problems, the utility model provides a device for detecting the measurement value accuracy of a concrete batching scale.

[0004] To achieve the above-mentioned purpose, the utility model provides a device for detecting the measurement value accuracy of a concrete batching scale, comprising a support frame, a hopper suspended in the middle of the support frame, and a weighing sensor arranged between the support frame and the hopper, positioning blocks are fixed on the front and rear side walls of the hopper, and both ends of the weighing sensor are connected to the positioning block and the support frame through hooks, respectively, and a detection mechanism is arranged above the hopper;

[0005] The detection mechanism includes a positioning frame arranged above the middle of the hopper, and adjusting bolts are symmetrically installed on the side walls of the positioning frame. One end of the adjusting bolt is connected to the positioning seat through a steel rope, and the steel rope is crimped on the upper edge of the hopper. The other end of the adjusting bolt passes through the inner side of the positioning frame and is locked by a locking nut. A dynamometer is installed on one end of the steel rope close to the adjusting bolt.

[0006] As a further improvement of the present invention, the adjusting bolts are provided with four groups, and the adjusting bolts are centrally symmetrically distributed along the circumference of the positioning frame.

[0007] As a further improvement of the utility model, a compression spring is sleeved on the outer side of the positioning frame and on the adjusting bolt.

[0008] As a further improvement of the utility model, the head of the adjusting bolt is connected to the steel rope, the shaft of the adjusting bolt is processed to form a flat square structure, and a flat circular guide hole is processed on the side wall of the positioning frame.

[0009] As a further improvement of the utility model, a pulley is provided at the upper edge of the hopper, the steel rope is fitted into an annular groove on the pulley, the pulley is rotatably installed at one end of the bracket, and a slot is processed at the other end of the bracket and crimped to the middle of the upper edge of the hopper, and the width of the slot matches the wall thickness of the hopper.

[0010] As a further improvement of the utility model, the hopper and the positioning frame are both square structures, and reinforcing ribs are provided at the inner corners of the positioning frame.

[0011] As a further improvement of the utility model, the positioning seat is fixedly arranged at the lower part of the support frame, a positioning hole is processed at the upper part of the positioning seat, and a hook is provided at one end of the steel rope facing the positioning seat, and the hook is buckled with the positioning hole for positioning.

[0012] The beneficial effects of the utility model are:

[0013] The device converts the rotational motion of the locking nut into linear motion of the adjusting bolt, tightens the steel rope through the relative motion of the adjusting bolt and the positioning frame, and presses the steel rope onto the pulley at the upper edge of the hopper. The steel rope is used to form downward pressure on the hopper to achieve loading. The weighing value is calibrated by observing, comparing and adjusting the values ​​of the dynamometer and the weighing sensor. The device adopts a weightless calibration method, which eliminates the processes of weight transportation, loading and unloading, simplifies the working process, and can also calibrate the maximum weighing capacity. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a front view of a device for detecting the measurement accuracy of a concrete batching scale according to the utility model;

[0015] Figure 2 for Figure 1 Middle AA section view;

[0016] Figure 3 The utility model is a top view of a device for detecting the measurement value accuracy of a concrete batching scale.

[0017] In the figure: 1. support frame; 2. weighing sensor; 3. hook; 4. hopper; 41. positioning block; 5. positioning seat; 51. positioning hole; 6. steel rope; 61. hook; 7. pulley; 71. bracket; 72. slot; 73. annular groove; 8. dynamometer; 9. adjusting bolt; 10. compression spring; 11. positioning frame; 111. guide hole; 112. reinforcing rib; 12. locking nut. DETAILED DESCRIPTION

[0018] like Figure 1-3 As shown, a concrete batching scale measurement value accuracy detection device described in the utility model comprises a support frame 1, a hopper 4 suspended in the middle of the support frame 1, and a weighing sensor 2 arranged between the support frame 1 and the hopper 4. Positioning blocks 41 are fixed on the front and rear side walls of the hopper 4. Both ends of the weighing sensor 2 are connected to the positioning block 41 and the support frame 1 through hooks 3. Two groups of weighing sensors 2 are symmetrically arranged along the front and rear directions of the hopper 4. A detection mechanism is arranged above the hopper 4.

[0019] The detection mechanism includes a positioning frame 11 arranged above the middle of the hopper 4, and adjusting bolts 9 are symmetrically installed on the side walls of the positioning frame 11. There are four groups of adjusting bolts 9, and the adjusting bolts 9 are centrally symmetrically distributed along the circumference of the positioning frame 11. One end of the adjusting bolt 9 is connected to the positioning seat 5 through a steel rope 6. The positioning seat 5 is fixed to the lower part of the support frame 1. A positioning hole 51 is processed on the upper part of the positioning seat 5. A hook 61 is provided at one end of the steel rope 6 facing the positioning seat 5. The hook 61 is buckled with the positioning hole 51 for positioning. The steel rope 6 is crimped to the upper edge of the hopper 4. A pulley 7 is provided at the upper edge of the hopper 4. The steel rope 6 cooperates with the annular groove 73 embedded in the pulley 7, and the pulley 7 is rotatably installed on the bracket 7. 1, and the other end of the bracket 71 is processed with a slot 72 and pressed on the middle of the upper edge of the hopper 4. The width of the slot 72 matches the wall thickness of the hopper 4. The other end of the adjusting bolt 9 passes through and extends into the inner side of the positioning frame 11 and is locked by a locking nut 12. A tension meter 8 is installed on the end of the steel rope 6 close to the adjusting bolt 9. A compression spring 10 is sleeved on the outer side of the positioning frame 11 and the adjusting bolt 9. The head of the adjusting bolt 9 is connected to the steel rope 6. The shaft of the adjusting bolt 9 is processed to form a flat square structure. An oblate guide hole 111 is processed on the side wall of the positioning frame 11. The hopper 4 and the positioning frame 11 are both square structures, and a reinforcing rib 112 is provided at the inner corner of the positioning frame 11.

[0020] The device converts the rotational motion of the locking nut into linear motion of the adjusting bolt, tightens the steel rope through the relative motion of the adjusting bolt and the positioning frame, and presses the steel rope onto the pulley at the upper edge of the hopper. The steel rope is used to form downward pressure on the hopper to achieve loading. The weighing value is calibrated by observing, comparing and adjusting the values ​​of the dynamometer and the weighing sensor. The device adopts a weightless calibration method, which eliminates the processes of weight transportation, loading and unloading, simplifies the working process, and can also calibrate the maximum weighing capacity.

[0021] In order to facilitate the understanding of the present invention, the following description is given in conjunction with the accompanying drawings:

[0022] During operation, first place a bracket with a pulley in the middle of the upper edge of the hopper, and the slot at the bottom of the bracket is engaged with the edge of the hopper. Then, the positioning frame is suspended above the center of the hopper. The steel ropes around the positioning frame pass around the corresponding pulleys and are snap-fitted with the positioning holes on the upper part of the positioning seat through hooks. Turn the locking nuts in sequence, and the rotational motion of the locking nuts is converted into linear motion of the adjusting bolts. The adjusting bolts move along the oblate guide holes toward the inside of the positioning frame, thereby tightening the steel ropes. The steel ropes form downward pressure on the upper edge of the hopper through the pulleys, and the corresponding force values ​​are reflected on the corresponding dynamometers. The pressures on the four groups of dynamometers are superimposed on the weighing device to keep the values ​​on the four groups of dynamometers uniform. By comparing the sum of the values ​​on the four groups of dynamometers with the sum of the readings on the weighing sensor, the corresponding errors can be detected, which is convenient for adjustment and calibration.

[0023] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A device for detecting the measurement accuracy of a concrete batching scale, characterized in that: It comprises a support frame (1), a hopper (4) suspended in the middle of the support frame (1), and a weighing sensor (2) arranged between the support frame (1) and the hopper (4); positioning blocks (41) are fixedly arranged on the front and rear side walls of the hopper (4); two ends of the weighing sensor (2) are respectively connected to the positioning block (41) and the support frame (1) through hooks (3); and a detection mechanism is arranged above the hopper (4); The detection mechanism comprises a positioning frame (11) arranged above the middle of the hopper (4), and adjusting bolts (9) are symmetrically installed on the side walls of the positioning frame (11). One end of the adjusting bolt (9) is connected to the positioning seat (5) through a steel rope (6), and the steel rope (6) is crimped on the upper edge of the hopper (4). The other end of the adjusting bolt (9) passes through and extends into the inner side of the positioning frame (11) and is locked by a locking nut (12). A tension gauge (8) is installed at one end of the steel rope (6) close to the adjusting bolt (9).

2. A concrete batching scale measurement value accuracy detection device according to claim 1, characterized in that: The adjusting bolts (9) are provided in four groups, and the adjusting bolts (9) are centrally symmetrically distributed along the circumference of the positioning frame (11).

3. A device for detecting the measurement value accuracy of a concrete batching scale according to claim 1, characterized in that: A compression spring (10) is sleeved on the outer side of the positioning frame (11) and on the adjusting bolt (9).

4. A concrete batching scale measurement value accuracy detection device according to claim 1, characterized in that: The head of the adjusting bolt (9) is connected to the steel rope (6), the shaft of the adjusting bolt (9) is processed to form a flat square structure, and a flat circular guide hole (111) is processed on the side wall of the positioning frame (11).

5. A device for detecting the measurement value accuracy of a concrete batching scale according to claim 1, characterized in that: A pulley (7) is provided at the upper edge of the hopper (4), the steel rope (6) is fitted into an annular groove (73) on the pulley (7), the pulley (7) is rotatably mounted on one end of a bracket (71), a groove (72) is processed on the other end of the bracket (71) and is crimped to the middle of the upper edge of the hopper (4), and the width of the groove (72) matches the wall thickness of the hopper (4).

6. A device for detecting the measurement value accuracy of a concrete batching scale according to claim 1, characterized in that: The hopper (4) and the positioning frame (11) are both square structures, and reinforcing ribs (112) are provided at the inner corners of the positioning frame (11).

7. A concrete batching scale measurement value accuracy detection device according to claim 1, characterized in that: The positioning seat (5) is fixedly arranged at the lower part of the support frame (1); a positioning hole (51) is processed at the upper part of the positioning seat (5); a hook (61) is arranged at one end of the steel rope (6) facing the positioning seat (5); and the hook (61) is buckled with the positioning hole (51) for positioning.

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