Weighing machine with overload protection structure

Abstract

The utility model discloses a weighing machine with an overload protection structure, which relates to the technical field of weighing machine overload protection appliances and comprises a weighing instrument, a weighing platform and transportation platforms mounted at two ends of the weighing platform, a buffer mechanism is mounted at the lower end of the weighing platform, a limiting mechanism is mounted on one side of the buffer mechanism, and the bottom end of the limiting mechanism is mounted at the lower part of the transportation platform on one side; through the cooperation of the magnetic attraction base and the first compression spring, the first limiting plate can be conveniently and rapidly popped out, meanwhile, the buffer plate is popped out, then an overweight object is blocked and prevented from entering the next link, the buffer plate can relieve the impact of the heavy object, and finally the machine in the next link can be prevented from breaking down; through cooperation of a magnetic suction column and a lifting rod, the lifting rod can be extruded to the periphery under the gravity of the weighing platform, overload pressure can be absorbed and relieved, and faults of the sensor can be avoided; finally, the problems that a rear-end machine breaks down due to overload of the weighing machine and the sensor is damaged due to overlarge gravity are solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to weighing machine overload protection tool technical field especially, it relates to a kind of weighing machine with overload protection structure. BACKGROUND

[0002] As an important measuring equipment, weighing machine plays an indispensable role in many fields in today's society. In the industrial field, whether it is the manufacturing industry to accurately measure raw materials and parts to ensure the stability of product quality, or the chemical industry to control the material feeding amount in the production process according to weight to achieve precise production, weighing machine is the key equipment to ensure the smooth progress of production process. In the logistics industry, accurate measurement of the weight of goods is crucial for reasonable arrangement of transportation resources, calculation of transportation fees and ensuring transportation safety. In the commercial retail scene, weighing machine is the basis for fair trade, and consumers pay the corresponding fees according to the weight of goods.

[0003] Although weighing machine is widely used, overload phenomenon occurs from time to time in actual use. At present, although some weighing machines are equipped with some simple overload protection measures, these measures often have limitations. Some weighing machines only provide overload prompt through software setting. When the weight exceeds the set value, only warning information is displayed on the display screen. However, the key components of the weighing machine have already been subjected to excessive pressure, which may have caused some damage. The mechanical protection structure of some weighing machines is too simple to withstand and disperse the huge overload pressure instantly, making it difficult to truly and effectively protect the equipment. For example, when the automatic weighing machine detects work, some unqualified objects exceed the weighing range of the weighing instrument. In one case, the heavy object stays on the weighing table, causing damage to the internal sensor or affecting the accuracy of the sensor. In another case, it slides to the next step, which may damage the subsequent instrument. Therefore, the above problems need to be solved. CONTENT OF THE UTILITY MODEL

[0004] The utility model aims at solving the shortcomings in the prior art and provides a weighing machine with overload protection structure.

[0005] To achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a weighing machine with overload protection structure, comprising a weighing instrument, a weighing table and a transport table installed at both ends of the weighing table. The lower end of the weighing table is provided with a buffer mechanism. The buffer mechanism is provided with a limiting mechanism on one side. The limiting mechanism is installed at the lower part of the transport table on one side, and the top end of the limiting mechanism is located between the transport table and the weighing table. The weighing instrument is provided with an alarm lamp with independent power supply on one side.

[0006] Preferably, the bottom end of the weighing table is inverted cone-shaped, and a mounting groove is formed in the inside of the weighing table, and a sensor is mounted in the mounting groove.

[0007] Preferably, the limiting mechanism comprises a magnetic base fixed to the lower part of the one side transport table, two first magnetic rods are mounted on the top surface of the magnetic base, a first limiting plate is mounted on the top end of the first magnetic rods, a first compression spring is mounted between the first limiting plate and the magnetic base, a second limiting plate is fixed to the upper end of the first limiting plate, a mounting groove is formed in the other side surface of the second limiting plate, a buffer spring is mounted in the mounting groove, a buffer plate is mounted on the other end of the buffer spring, and a clamping plate is hingedly connected to the bottom end of the second limiting plate.

[0008] Preferably, the length of the clamping plate is greater than the distance between the weighing table and the transport table.

[0009] Preferably, the buffer mechanism comprises a bearing base mounted at the lower end of the weighing table, a cross-shaped sliding groove is formed in the inside of the bearing base, four groups of second compression springs are mounted in the cross-shaped sliding groove, a second magnetic rod is mounted on the other end of each of the four groups of second compression springs, a magnetic column is mounted on the inner side of each of the four second magnetic rods, the magnetic column is located at the center of the bearing base, a lifting rod is mounted on the top end of each of the four second magnetic rods, and four soft plates are mounted on the top surface of the bearing base.

[0010] Preferably, the four lifting rods can form a rectangular lifting frame, and the bottom end of the weighing table is placed in the lifting frame.

[0011] Compared with the prior art, the beneficial effects of the utility model are as follows: through the cooperation of the magnetic base and the first compression spring, the first limiting plate can be quickly popped out, and at the same time, the buffer plate is popped out, so that the overweight object is blocked from entering the next link, and the buffer plate can reduce the impact of the heavy object, so that the failure of the next link machine can be avoided; through the cooperation of the magnetic column and the lifting rod, the lifting rod can be pressed to all directions under the gravity of the weighing table itself, so that the overload pressure is absorbed and relieved, and the failure of the sensor is avoided; and finally, the failure of the rear-end machine caused by the overload of the weighing machine and the damage of the sensor caused by the excessive gravity are solved. BRIEF DESCRIPTION OF DRAWINGS

[0012] The drawings described herein are used to provide further understanding of the utility model and constitute a part of the application. The schematic embodiments of the utility model and the description thereof are used to explain the utility model and do not constitute an improper limitation on the utility model. In the drawings:

[0013] Figure 1 It is a whole three-dimensional structure schematic view of the device provided by the utility model;

[0014] Figure 2A limiting mechanism structure schematic view provided by the utility model is shown in the figure.

[0015] Figure 3 A limiting mechanism structure expanded schematic view provided by the utility model is shown in the figure.

[0016] Figure 4 A buffer mechanism cross section structure schematic view provided by the utility model is shown in the figure.

[0017] Figure 5 A lifting frame structure schematic view provided by the utility model is shown in the figure.

[0018] In the figure, serial number: 1, a weighing instrument; 2, a weighing table; 3, a conveying table; 4, an alarm lamp; 5, a magnetic base; 6, a first magnetic rod; 7, a first limiting plate; 8, a first compression spring; 9, a second limiting plate; 10, a clamping plate; 11, a buffer plate; 12, a buffer spring; 13, a sensor; 14, a bearing base; 15, a second compression spring; 16, a second magnetic rod; 17, a soft plate; 18, a lifting rod; 19, a magnetic column. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments.

[0020] Embodiment: see Figures 1-5The utility model discloses a weighing machine with overload protection structure, including weighing appearance 1, weighing platform 2 and the transport platform 3 of installing at weighing platform 2 both ends, through the cooperation of weighing platform 2 and weighing appearance 1, it is convenient for display the weight of the object of over scale, the lower end of weighing platform 2 is installed with buffer mechanism, and buffer mechanism one side installs the limiting mechanism, and through limiting mechanism avoids the overload object to damage rear end device, and limiting mechanism bottom end is installed in one side transport platform 3 lower part, and limiting mechanism top end is located between this transport platform 3 and weighing platform 2, and weighing appearance 1 one side installs the alarm lamp 4 of possessing independent power supply, and through alarm lamp 4, it is convenient for the alarm after overload, and the bottom end of weighing platform 2 is inverted cone, and the inside of weighing platform 2 is seted up with installation groove, and sensor 13 is installed in the installation groove, and through sensor 13, it is convenient for sensing object weight, and the limiting mechanism includes the magnetic attraction base 5 of fixedly connected in one side transport platform 3 lower part, and through magnetic attraction base 5, it is convenient for the first magnetic attraction rod 6 of fixed first, and the top surface of magnetic attraction base 5 is installed with two first magnetic attraction rods 6, and through first magnetic attraction rod 6, it is convenient for installing the first limiting plate 7, and the top end of first magnetic attraction rod 6 is installed with first limiting plate 7, and through first limiting plate 7, it is convenient for the cooperation of first compression spring 8, and first limiting plate 7 and magnetic attraction base 5 between are installed with first compression spring 8, and through first compression spring 8, it is convenient for the second limiting plate 9 of rapid ejection, and the upper end of first limiting plate 7 is fixedly connected with second limiting plate 9, and through second limiting plate 9, it is convenient for blocking overload object, and the other side surface of second limiting plate 9 is seted up with installation groove, and buffer spring 12 is installed in the installation groove, and through buffer spring 12, it is convenient for absorbing vibration, and the other end of buffer spring 12 is installed with buffer plate 11, and through buffer plate 11, it is convenient for absorbing the impact that overload object brings, and the bottom end of second limiting plate 9 is hinged with clamping plate 10, and through clamping plate 10, it is convenient for the limiting buffer plate 11.

[0021] In the utility model, the length of the clamping plate 10 is greater than the distance between the weighing platform 2 and the transport platform 3, the buffer mechanism includes a load-bearing base 14 installed at the lower end of the weighing platform 2, the load-bearing base 14 is internally provided with a cross-shaped sliding groove, four sets of second compression springs 15 are installed in the cross-shaped sliding groove, the second compression springs 15 are used for buffering the pressure of the overload object on the sensor 13, the other end of each of the four sets of second compression springs 15 is provided with a second magnetic attraction rod 16, the second magnetic attraction rod 16 is used for cooperating with a magnetic attraction column 19, the inner side of the four second magnetic attraction rods 16 is provided with the magnetic attraction column 19, the magnetic attraction column 19 is used for fixing the second magnetic attraction rod 16, the magnetic attraction column 19 is located at the center of the load-bearing base 14, the top end of each of the four second magnetic attraction rods 16 is provided with a lifting rod 18, the lifting rod 18 is used for bearing the weighing platform 2, the top surface of the load-bearing base 14 is provided with four soft plates 17, the soft plates 17 are used for limiting the descending position of the weighing platform 2 after the weighing platform 2 is lowered, and the four lifting rods 18 can form a rectangular lifting frame, and the bottom end of the weighing platform 2 is placed in the lifting frame.

[0022] In the utility model, the model of the sensor is ZZ110-042.

[0023] Working principle: when the utility model is used, when in non overload state, the device is powered on, the clamping plate 10 avoids the buffer plate 11 to pop up, simultaneously the magnetic base 5 avoids the second limiting plate 9 to pop up by attracting the first magnetic rod 6, simultaneously the magnetic column 19 attracts the second magnetic rod 16, at this moment, the lifting rod 18 of the second magnetic rod 16 upper end constitutes a rectangular lifting frame, when the upper end of the weighing platform 2 passes through the overload object, the sensor 13 senses the overload, and is powered off rapidly, simultaneously the alarm lamp 4 with independent power source starts to remind the staff, because the power is disconnected, the magnetic base 5 and the magnetic column 19 lose magnetism, at this moment, the first compression spring 8 drives the second limiting plate 9 to pop up upward, simultaneously when the bottom end of the second limiting plate 9 contacts the bottom end of the weighing platform 2, the weighing platform 2 drives the clamping plate 10 to cancel the restriction to the buffer plate 11, under the action of the buffer spring 12, the buffer plate 11 pops up, and the impact brought by the overload object is buffered when the overload object is blocked, simultaneously the magnetic column 19 loses the suction force to the second magnetic rod 16, at this moment, under the gravity of the weighing platform 2, the lifting rod 18 is driven to move to the periphery, at this moment, under the action of the second compression spring 15, the weighing platform 2 will slowly fall, simultaneously the overload gravity is relieved, and the sensor 13 is protected.

[0024] The above is only the preferred specific implementation of the utility model, but the protection scope of the utility model is not limited to this, any skilled person in the art in the technical range disclosed by the utility model according to the technical scheme and utility model concept of the utility model is equivalent to replace or change, and should be covered in the protection scope of the utility model.

Claims

1. A weighing machine with overload protection structure, comprising a weighing instrument (1), a weighing table (2) and a transport table (3) installed at both ends of the weighing table (2), characterized in that: The lower end of the weighing platform (2) is provided with a buffer mechanism, one side of the buffer mechanism is provided with a limiting mechanism, the bottom end of the limiting mechanism is installed on the lower part of one side of the conveying platform (3), the top end of the limiting mechanism is located between the conveying platform (3) and the weighing platform (2), and one side of the weighing instrument (1) is provided with an alarm lamp (4) with an independent power supply.

2. The load cell with overload protection structure according to claim 1, characterized in that: The bottom end of the weighing platform (2) is inverted conical, and the weighing platform (2) is internally provided with a mounting groove, and the mounting groove is internally provided with a sensor (13).

3. The load cell with overload protection structure according to claim 1, wherein: The limiting mechanism comprises a magnetic base (5) fixed to the lower part of the conveying platform (3), two first magnetic rods (6) are installed on the top surface of the magnetic base (5), a first limiting plate (7) is installed at the top end of the first magnetic rod (6), a first compression spring (8) is installed between the first limiting plate (7) and the magnetic base (5), a second limiting plate (9) is fixed to the upper end of the first limiting plate (7), an installation groove is formed in the other side surface of the second limiting plate (9), a buffer spring (12) is installed in the installation groove, a buffer plate (11) is installed at the other end of the buffer spring (12), and a clamping plate (10) is hingedly connected to the bottom end of the second limiting plate (9).

4. The load cell with overload protection structure according to claim 3, characterized in that: The length of the clamping plate (10) is greater than the distance between the weighing platform (2) and the conveying platform (3).

5. The load cell with overload protection structure according to claim 1, wherein: The buffer mechanism comprises a bearing base (14) installed at the lower end of the weighing platform (2), a cross-shaped sliding groove is formed in the bearing base (14), four groups of second compression springs (15) are installed in the cross-shaped sliding groove, a second magnetic rod (16) is installed at the other end of each of the four groups of second compression springs (15), a magnetic column (19) is installed on the inner side of the four second magnetic rods (16), the magnetic column (19) is located at the center of the bearing base (14), and a lifting rod (18) is installed at the top end of each of the four second magnetic rods (16), and four soft plates (17) are installed on the top surface of the bearing base (14).

6. The load cell with overload protection structure according to claim 5, characterized in that: The four lifting rods (18) can form a rectangular lifting frame, and the bottom end of the weighing platform (2) is placed in the lifting frame.

Images