Monorail scale calibration device and calibration method

Abstract

The monorail scale calibration device comprises a standard trolley used for walking left and right along the upper side of a hanger track, and the standard trolley comprises a front side frame plate, a rear side frame plate and a transverse hanging plate connected between the front side frame plate and the rear side frame plate. Wheels and driving motors for driving the corresponding wheels to rotate are arranged on the front side frame plate and the rear side frame plate, the monorail scale calibration device further comprises a vertical hanging rod used for being connected with the transverse hanging plate in a hanging mode through the hook channel, a weight connecting shaft is arranged on the vertical hanging rod, a weight supporting plate is arranged at the bottom of the weight connecting shaft, and the weight supporting plate is connected with the vertical hanging rod. And a plurality of weight weights connected to the weight connecting shaft in a sleeving manner are placed on the weight supporting plate. The invention provides the monorail scale calibration device capable of realizing online calibration of the weighing sensor of the monorail scale without disassembly and assembly and the calibration method using the calibration device.

Description

Technical Field

[0001] The present invention relates to the technical field of verification and calibration, and in particular to a single track scale calibration device and a calibration method. Background Art

[0002] Monorail scale is a track-suspended weighing and measuring device, which is mainly used to weigh items during the transmission process on the suspended track. It is widely used in slaughtering, meat processing and food processing workplaces.

[0003] The single track scale structure in the prior art is as follows: Figure 1~2 As shown, it includes an installation beam 1, a weighing sensor 2 is arranged on the upper end of the installation beam 1, a hanger 3 is connected to the weighing sensor 2, the hanger 3 includes a hanger track 4 for being connected in series to the conveying track, the hanger includes vertical hanging rods located at the front and rear sides of the hanger track, and a hook channel 6 extending along the left and right direction for the hook to pass through is arranged in the middle of the hanger track 4 and the conveying track 5.

[0004] When in use, the slaughtered meat is hung on the hook, and the hook is transported along the conveyor track. When the hook moves to the rack track, the weighing sensor can weigh the slaughtered meat on the hook. The existing monorail scale has the following problems: according to the corresponding calibration specifications, the weighing sensor of the monorail scale needs to be calibrated. The calibration method in the prior art is to directly remove the weighing sensor in the monorail scale and take the weighing sensor to the calibration unit for calibration. This calibration method has the following problems: the disassembly and assembly of the weighing sensor is time-consuming and labor-intensive, and after the weighing sensor is disassembled, the monorail scale cannot continue to work, which will affect the factory's transportation of slaughtered meat; in addition, after the weighing sensor is removed, the calibration environment of the weighing sensor will be inconsistent with the actual working environment of the weighing sensor, and the accurate calibration of the weighing sensor cannot be guaranteed. Summary of the invention

[0005] The object of the present invention is to provide a monorail scale calibration device which can realize online calibration of a weighing sensor of the monorail scale without disassembly or assembly.

[0006] In order to solve the above technical problems, the technical solution of the single track scale calibration device in the present invention is as follows: A monorail scale calibration device includes a standard trolley for moving left and right along the upper side of a hanger track, the standard trolley includes a front frame plate, a rear frame plate and a transverse hanging plate connected between the front frame plate and the rear frame plate, the front frame plate and the rear frame plate are provided with wheels and a driving motor for driving the corresponding wheels to rotate, the monorail scale calibration device also includes a vertical hanging rod for being connected to the transverse hanging plate via a hook channel, a weight connecting shaft is provided on the vertical hanging rod, a weight supporting plate is provided at the bottom of the weight connecting shaft, and a plurality of weighing weights sleeved on the weight connecting shaft are placed on the weight supporting plate.

[0007] Furthermore, a hanging plate matching hook adapted to be hung with the horizontal hanging plate is provided on the right side of the upper end of the vertical hanging rod. The cross-section of the horizontal hanging plate is a square structure, and the hook portion of the hanging plate matching hook is a square groove structure adapted to prevent rotation with the hanging plate.

[0008] Furthermore, a connecting plate located on the lower side of the hanger rail is fixed to the right side of the vertical hanging rod, the connecting plate is located directly below the matching hook of the hanging plate, the weight connecting shaft is fixed to the bottom of the connecting plate, the vertical hanging rod and the weight connecting shaft are arranged side by side, and the open side of the weight faces away from the vertical hanging rod.

[0009] Furthermore, the bottom of the vertical hanging rod has a gripping portion located on the lower side of the weight tray for a worker to hold.

[0010] Furthermore, the wheels include a left wheel group and a right wheel group, the left wheel group includes a first wheel rotatably mounted on the front frame plate and a second wheel rotatably mounted on the rear frame plate, the drive motor includes a first motor drivingly connected to the first wheel and a second motor drivingly connected to the second wheel, the right wheel group includes a third wheel rotatably mounted on the front frame plate and a fourth wheel rotatably mounted on the rear frame plate, and a hanging rod avoidance channel is formed between the first wheel and the second wheel for avoiding the vertical hanging rod when the vertical hanging rod is connected to the horizontal hanging plate.

[0011] Furthermore, the motor housing of the first motor and the motor housing of the second motor are located between the front frame plate and the rear frame plate, the motor housing of the first motor is fixed to the upper side of the horizontal hanging plate, and the motor housing of the second motor is fixed to the upper side of the horizontal hanging plate, and the opposite sides of the first motor and the second motor are used to cooperate with the vertical hanging rod limiter to limit the forward and backward movement of the vertical hanging rod.

[0012] Furthermore, the motor shaft of the first motor passes through the front side of the front frame plate and is drivingly connected to the wheel axle of the first wheel; the motor shaft of the second motor passes through the rear side of the rear frame plate and is drivingly connected to the wheel axle of the second wheel.

[0013] The beneficial effects of the present invention are as follows: in the present invention, the driving motor works, the standard trolley moves to the hanger track via the conveying track, and then moves from the hanger track to the conveying track on the other side, and the sum of the deadweight of the standard trolley, the deadweight of the vertical hanging rod and the deadweight of the weight is used to calibrate the weighing sensor of the monorail scale. There is no need to disassemble and assemble the weighing sensor of the monorail scale, which reduces the workload of disassembling and assembling the weighing sensor. The calibration environment of the weighing sensor is consistent with its working environment, which can ensure its calibration accuracy. In addition, the calibration process will be completed quickly and will not excessively affect the factory's production tasks. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] By reading the following detailed description with reference to the accompanying drawings, the above and other objects, features and advantages of the exemplary embodiments of the present disclosure will become readily understood. In the accompanying drawings, several embodiments of the present disclosure are shown in an exemplary and non-limiting manner, and the same or corresponding reference numerals represent the same or corresponding parts, wherein: Figure 1 It is a structural schematic diagram of a single track scale in the prior art of the present invention; Figure 2 yes Figure 1 A top view of the coordination between the middle rack track and the conveyor track; Figure 3 It is a usage state diagram of an embodiment of the single track scale calibration device of the present invention; Figure 4 yes Figure 3 A top view of the coordination between the center single track scale calibration device and the rack track; Figure 5 yes Figure 3 Schematic diagram of the structure of a medium standard car; Figure 6 yes Figure 4 Schematic diagram of the state when the middle horizontal hanging plate is not connected to the vertical hanging rod; Figure 7 yes Figure 3 Schematic diagram of the coordination of the middle vertical hanging rod, the weight connecting shaft and the weight of the scale; Figure 8 yes Figure 7 AA section view; 1. Install the crossbeam; 2. Weighing sensor; 3. Hanging rack; 4. Hanging rack track; 5. Conveying track; 6. Hooking channel; 7. Standard trolley; 8. Horizontal hanging plate; 9. Connecting plate; 10. Vertical hanging rod; 11. Weight connecting shaft; 12. Hanging plate matching hook; 13. Weights; 14. Grip; 15. Front frame plate; 16. Rear frame plate; 17. First wheel; 18. Second wheel; 19. First motor; 20. Second motor; 21. Front transmission belt; 22. Rear transmission belt; 23. Third wheel; 24. Fourth wheel; 25. Weight support plate; 26. Opening for weights; 27. Hanging rod avoidance channel. DETAILED DESCRIPTION

[0015] In order to facilitate the understanding of the present invention, the present invention is described in more detail below in conjunction with the accompanying drawings and specific embodiments. Preferred embodiments of the present invention are provided in the accompanying drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described in this specification. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the present invention more thorough and comprehensive.

[0016] It should be noted that, unless otherwise defined, all technical and scientific terms used in this specification have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention.

[0017] An embodiment of a single track scale calibration device of the present invention is as follows: Figures 3 to 8 As shown: it includes a standard trolley 7 for moving left and right along the upper side of the conveying track 5 and the rack track 4. The standard trolley 7 refers to a trolley with a determined and known weight.

[0018] The standard trolley 7 includes a front frame plate 15 and a rear frame plate 16 arranged in parallel front and back, and a transverse hanging plate 8 connected between the front frame plate and the rear frame plate. The front frame plate 15 and the rear frame plate 16 are provided with wheels and driving motors for driving the corresponding wheels to rotate.

[0019] In this embodiment, the wheels include a left wheel set and a right wheel set, the left wheel set includes a first wheel 17 rotatably mounted on the front frame plate and a second wheel 18 rotatably mounted on the rear frame plate, the driving motor includes a first motor 19 drivingly connected to the first wheel 17 and a second motor 20 drivingly connected to the second wheel 18, the first wheel 17 and the second wheel 19 are independently arranged at intervals, so that when the first motor and the second motor rotate at different speeds, the steering movement of the standard trolley can be achieved. The right wheel set includes a third wheel 23 rotatably mounted on the front frame plate and a fourth wheel 24 rotatably mounted on the rear frame plate, and the third wheel 23 and the fourth wheel 24 are arranged at both ends of the same wheel axle.

[0020] The motor housing of the first motor and the motor housing of the second motor are located between the front frame plate and the rear frame plate, the motor housing of the first motor is fixed to the upper side of the transverse hanging plate 8, and the motor housing of the second motor is fixed to the upper side of the transverse hanging plate 8. The motor shaft of the first motor passes through the front side of the front frame plate and is connected to the wheel shaft of the first wheel through the front transmission belt 21; the motor shaft of the second motor passes through the rear side of the rear frame plate and is connected to the wheel shaft of the second wheel through the rear transmission belt 22.

[0021] The track scale calibration device also includes a vertical hanging rod 10 for connecting with the horizontal hanging plate through a hook channel, a weight connecting shaft 11 is arranged on the vertical hanging rod, a weight supporting plate 25 is arranged at the bottom of the weight connecting shaft 11, and a plurality of weights 13 connected to the weight connecting shaft are placed on the weight supporting plate 25. A hanging rod avoidance channel 5 is formed between the first wheel and the second wheel for avoiding the vertical hanging rod when the vertical hanging rod is connected with the horizontal hanging plate. The opposite sides of the first motor 19 and the second motor 20 are used to cooperate with the vertical hanging rod limit to limit the vertical hanging rod from moving forward and backward.

[0022] In this embodiment, a hanging plate matching hook 12 is provided on the right side of the upper end of the vertical hanging rod, which is matched with the horizontal hanging plate. The cross section of the horizontal hanging plate 8 is a square structure, and the hook portion of the hanging plate matching hook 12 is a square groove structure that matches the hanging plate and stops rotation. The motor housing of the first motor and the motor housing of the second motor are used to match the front and rear sides of the hanging plate matching hook to limit the front and rear movement of the hanging plate matching hook.

[0023] A connecting plate 9 located at the lower side of the rack track is fixed to the right side of the vertical hanging rod. The connecting plate 9 is located just below the matching hook of the hanging plate. The weight connecting shaft 11 is fixed to the bottom of the connecting plate 9. The vertical hanging rod 10 and the weight connecting shaft 11 are arranged in parallel. The opening 26 of the weight is facing away from the vertical hanging rod 10. In this way, the weight is not easy to fall off the weight support plate during the movement or braking of the standard trolley. The weight is located just below the horizontal hanging plate, which can help the force stability of the standard trolley.

[0024] The bottom of the vertical hanging rod has a gripping portion 14 located on the lower side of the weight tray for a worker to hold.

[0025] When the factory's monorail scale needs to be calibrated on site, the standard trolley can be placed on the conveying track next to the rack track. For example, in this embodiment, the standard trolley is placed on the conveying track on the right side of the rack track. Before the weight is placed on the weight support plate, the staff can hold the grip at the bottom of the vertical hanging rod, and the hanging plate matching hook at the upper end of the vertical hanging rod passes through the hook channel of the conveying track from bottom to top, and then the hanging plate matching hook passes through the hanging rod avoidance channel between the first wheel and the second wheel, and finally hangs on the horizontal hanging plate between the motor housing of the first motor and the motor housing of the second motor. The setting of the hanging rod avoidance channel helps to reduce the overall length of the standard trolley. The hanging plate matching hook is adapted to the shape of the horizontal hanging plate, so the hanging plate matching hook cannot move left and right relative to the horizontal hanging plate. Due to the limit of the first motor and the second motor, the hanging plate matching hook cannot move forward and backward relative to the horizontal scraper. The first motor and the second motor are installed on the horizontal hanging plate. The first motor and the second motor are located between the front frame plate and the rear frame plate. On the one hand, it is beneficial to reduce the overall width of the standard trolley and avoid interference with the vertical hanger of the monorail scale. On the other hand, the first motor and the second motor can also be used to limit the hanging plate matching hook.

[0026] Before the weights are placed, the vertical hanging rod and the horizontal hanging plate are connected. The vertical scraper is heavy and easy to achieve. Then, according to the calibration needs, a suitable number of weights are placed on the weight support plate, with the open side of the weights facing away from the vertical hanging rod. Then, the first motor and the second motor are used to drive the standard trolley to move from right to left. The standard trolley moves to the bracket track of the monorail scale via the right conveying track, and then moves to the left conveying track. During the movement of the standard trolley via the bracket track, the weighing sensor of the monorail scale has a weighing reading. The weighing reading is compared with the sum of the deadweight of the standard trolley, the deadweight of the vertical hanging rod and the deadweight of the weights to realize the calibration of the weighing sensor.

[0027] The single-track scale calibration device can realize online calibration of the weighing sensor without disassembly, which is very convenient and will not take up a long calibration time to affect the normal production of the factory.

[0028] Implementation of a method for calibrating a single track scale Figures 3 to 8 As shown: the method includes the following steps. In the first step, the standard trolley of the calibration device is placed on the conveying track next to the rack track; in the second step, before the weight is placed on the weight support plate, the staff holds the lower part of the vertical hanging rod, and the hanging plate at the upper end of the vertical hook cooperates with the hook to pass through the hook channel on the conveying track and the hanging rod avoidance channel between the first wheel and the second wheel from bottom to top, and then the hanging plate at the upper end of the vertical hook cooperates with the horizontal hanging plate hook; in the third step, the staff places the weight on the weight support plate, drives the motor to work, and the standard trolley moves from the conveying track to the rack track, and then moves from the rack track to the conveying track on the other side.

[0029] The calibration device in this method is the same as the above-mentioned single track scale calibration device embodiments and will not be described in detail here.

[0030] In the above description of this specification, unless otherwise clearly specified and limited, the terms "fixed", "installed", "connected" or "connected" should be understood in a broad sense. For example, with regard to the term "connection", it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be the internal connection of two elements or the interaction relationship between two elements. Therefore, unless otherwise clearly defined in this specification, those skilled in the art can understand the specific meanings of the above terms in the present invention according to the specific circumstances.

[0031] According to the above description of this specification, those skilled in the art may also understand that the terms used below, such as "up", "down", "front", "back", "left", "right", "length", "width", "thickness", "vertical", "horizontal", "top", "bottom", "inside", "outside", "axial", "radial", "circumferential", "center", "longitudinal", "lateral", "clockwise" or "counterclockwise", etc., which indicate the orientation or position relationship, are based on the orientation or position relationship shown in the drawings of this specification, and are only for the purpose of facilitating the explanation of the scheme of the present invention and simplifying the description, rather than explicitly or implicitly indicating that the device or element involved must have the specific orientation, be constructed and operate in a specific orientation. Therefore, the above-mentioned orientation or position relationship terms cannot be understood or interpreted as limitations on the scheme of the present invention.

[0032] In addition, the terms "first" or "second" used in this specification to refer to numbers or ordinals are only used for descriptive purposes and cannot be understood as explicitly or implicitly indicating relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of this specification, the meaning of "plurality" is at least two, such as two, three or more, etc., unless otherwise clearly and specifically defined.

[0033] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A single track scale calibration device, characterized in that: It includes a standard trolley for moving left and right along the upper side of the hanging track, the standard trolley includes a front frame plate, a rear frame plate and a transverse hanging plate connected between the front frame plate and the rear frame plate, the front frame plate and the rear frame plate are provided with wheels and a driving motor for driving the corresponding wheels to rotate, the monorail scale calibration device also includes a vertical hanging rod for being connected to the transverse hanging plate via a hook channel, a weight connecting shaft is provided on the vertical hanging rod, a weight supporting plate is provided at the bottom of the weight connecting shaft, and a plurality of weighing weights connected to the weight connecting shaft are placed on the weight supporting plate.

2. The monorail scale calibration device according to claim 1, characterized in that: A hanging plate matching hook is arranged on the right side of the upper end of the vertical hanging rod, which is adapted to be hung with the horizontal hanging plate. The cross section of the horizontal hanging plate is a square structure, and the hook part of the hanging plate matching hook is a square groove structure adapted to be anti-rotation matched with the hanging plate.

3. The monorail scale calibration device according to claim 2, characterized in that: A connecting plate located at the lower side of the hanger rail is fixed on the right side of the vertical hanging rod, and the connecting plate is located directly below the matching hook of the hanging plate. The weight connecting shaft is fixed to the bottom of the connecting plate. The vertical hanging rod and the weight connecting shaft are arranged side by side, and the open side of the weight faces away from the vertical hanging rod.

4. The monorail scale calibration device according to claim 3, characterized in that: The bottom of the vertical hanging rod is provided with a gripping portion located at the lower side of the weight tray for a worker to hold.

5. The monorail scale calibration device according to any one of claims 1 to 4, characterized in that: The wheels include a left wheel group and a right wheel group, the left wheel group includes a first wheel rotatably mounted on the front frame plate and a second wheel rotatably mounted on the rear frame plate, the drive motor includes a first motor drivingly connected to the first wheel and a second motor drivingly connected to the second wheel, the right wheel group includes a third wheel rotatably mounted on the front frame plate and a fourth wheel rotatably mounted on the rear frame plate, and a hanging rod avoidance channel is formed between the first wheel and the second wheel for avoiding the vertical hanging rod when the vertical hanging rod is connected to the horizontal hanging plate.

6. The monorail scale calibration device according to claim 5, characterized in that: The motor housing of the first motor and the motor housing of the second motor are located between the front frame plate and the rear frame plate, the motor housing of the first motor is fixed to the upper side of the horizontal hanging plate, and the motor housing of the second motor is fixed to the upper side of the horizontal hanging plate, and the opposite sides of the first motor and the second motor are used to cooperate with the vertical hanging rod limiter to limit the forward and backward movement of the vertical hanging rod.

7. The monorail scale calibration device according to claim 6, characterized in that: The motor shaft of the first motor passes through the front side of the front frame plate and is drivingly connected to the wheel axle of the first wheel; the motor shaft of the second motor passes through the rear side of the rear frame plate and is drivingly connected to the wheel axle of the second wheel.

8. A calibration method using the monorail scale calibration device according to any one of claims 1 to 7, characterized in that: The method comprises the following steps: first, placing a standard trolley on a conveying track beside a rack track; second, before a weight is placed on a weight support plate, a staff member holds the lower part of a vertical hanging rod, and a hanging plate at an upper end of the vertical hook cooperates with a hook to sequentially pass through a hook channel on the conveying track and a hanging rod avoidance channel between a first wheel and a second wheel from bottom to top, and then a hanging plate at an upper end of the vertical hook cooperates with a hook on a horizontal hanging plate; third, a staff member places the weight on the weight support plate, drives a motor to work, and moves the standard trolley to the rack track via the conveying track, and then moves from the rack track to the conveying track on the other side.

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