Weighing sensor for crane scale

Abstract

The utility model relates to the technical field of mass meters, in particular to a weighing sensor for a crane scale, which comprises a strain gauge, a pressure acquisition part arranged at the center of the strain gauge, a fixing rod vertically mounted on the pressure acquisition part, a fixing disc fixed at the bottom end of the fixing rod, a rotating disc connected with the fixing disc through a rotating shaft, and a plurality of wedge-shaped grooves arranged at the bottom of the fixing disc. The bottom of the rotating disc is fixedly connected with a lifting hook, a plurality of telescopic pins are fixed to the upper surface of the rotating disc, and the tops of the telescopic pins abut against the wedge-shaped grooves. The strain gauges are connected with the rotating shaft, the rotating shaft is connected with the telescopic pin, the lifting hook can be manually rotated, the telescopic pin defaults to clamp the rotating shaft when the lifting hook does not rotate, and use is more convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of mass measuring instruments, in particular to a weighing sensor for a hanging scale. Background Art

[0002] A hanging scale, also known as a hook scale, hanging scale, hanging scale, hook scale, etc., is a weighing instrument that measures the mass of an object while it is suspended. Hanging scales are widely used in the field of weighing. Objects are hung on the hook of the hanging scale, and the force signal is converted into an electrical signal through a weighing sensor to detect the size of the force signal.

[0003] The existing hanging scales on the market include a hanging ring, a sensor, and a connecting piece from top to bottom. The sensor is provided with a hook at the bottom and a shell outside the sensor. In order to facilitate hanging, the hook needs to be able to rotate, but when a heavy object is hung on the hook, the hook may spin, causing the weighing sensor to read inaccurately, affecting the accuracy and precision of the weighing work.

[0004] Based on this, the utility model designs a weighing sensor for a hanging scale to solve the above problems. Utility Model Content

[0005] The utility model aims to provide a weighing sensor for a hanging scale to solve the problems in the prior art.

[0006] In order to solve the above technical problems, the utility model is realized by the following technical solutions:

[0007] A weighing sensor for a crane scale comprises a strain gauge, a pressure collecting part is provided in the center of the strain gauge, a fixing rod is vertically installed on the pressure collecting part, a fixing plate is fixed to the bottom end of the fixing rod, the fixing plate is connected to a rotating plate via a rotating shaft, a plurality of wedge-shaped grooves are provided at the bottom of the fixing plate, the wedge-shaped grooves are evenly arranged in a circle around the rotating shaft, a hook is fixedly connected to the bottom of the rotating plate, a plurality of telescopic pins are fixed to the upper surface of the rotating plate, and the tops of the telescopic pins are in contact with the wedge-shaped grooves.

[0008] The telescopic pin comprises a base, a compression spring is vertically fixed in the base, and a round-head telescopic end is arranged on the top of the compression spring.

[0009] The hook comprises a stopper rod, which is hinged on the upper part of the hook and has the other end abutting against the inner side of the free end of the hook. The stopper rod and the bottom of the rotating disk are both provided with connecting ears, and the two connecting ears are connected by a tension spring.

[0010] The fixing rod is fixed on the pressure collecting part by bolts up and down.

[0011] The strain gauge is connected to a circuit board, and the circuit board is connected to a display screen and a battery.

[0012] It also includes a shell, a hanging ring is provided at the center of the top of the shell, and the strain gauge is horizontally fixed at the bottom of the shell.

[0013] The utility model has the following beneficial effects: the strain gauge of the utility model is connected to the rotating shaft, and the rotating shaft is connected to the telescopic pin, so that the hook can be rotated manually. When not rotating, the telescopic pin clamps the rotating shaft by default to prevent the rotating shaft from rotating after hanging objects, which is more convenient to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for describing the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0016] Figure 2 It is a longitudinal sectional view of the utility model;

[0017] Figure 3 for Figure 2 A magnified view of the structure at center;

[0018] Figure 4 This is a schematic diagram of the structure used in the utility model;

[0019] Figure 5 It is a schematic diagram of the structure of the fixed disk in the utility model.

[0020] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0021] 1. Strain gauge; 2. Pressure collection unit; 3. Fixed rod; 4. Fixed disk; 5. Rotating shaft; 6. Rotating disk; 7. Wedge groove; 8. Hook; 9. Telescopic pin; 10. Base; 11. Compression spring; 12. Telescopic end; 13. Gear lever; 14. Connecting ear; 15. Tension spring; 16. Bolt; 17. Circuit board; 18. Display screen; 19. Housing; 20. Lifting ring. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. It should be understood that the terms "upper", "middle", "outer", "inner", "lower" and the like indicating directions or positional relationships are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the components or elements referred to must have a specific direction, and therefore cannot be understood as limiting the present invention.

[0023] The accompanying drawings are specific embodiments of the present utility model. Figure 1-Figure 5 As shown, the utility model is a weighing sensor for a crane scale, comprising a strain gauge 1, a pressure collecting part 2 is provided in the center of the strain gauge 1, a fixing rod 3 is vertically installed on the pressure collecting part 2, a fixing plate 4 is fixed to the bottom end of the fixing rod 3, the fixing plate 4 is connected to a rotating plate 6 through a rotating shaft 5, a plurality of wedge-shaped grooves 7 are provided at the bottom of the fixing plate 4, the wedge-shaped grooves 7 are evenly arranged in a circle around the rotating shaft 5, a hook 8 is fixedly connected to the bottom of the rotating plate 6, a plurality of telescopic pins 9 are fixed to the upper surface of the rotating plate 6, and the tops of the telescopic pins 9 are in contact with the wedge-shaped grooves 7.

[0024] The telescopic pin 9 includes a base 10, in which a compression spring 11 is vertically fixed. A round-headed telescopic end 12 is provided on the top of the compression spring 11, and the telescopic end 12 can be stuck in the wedge-shaped groove 7. Since the compression spring 11 is provided in the telescopic pin 9, when the rotating disk 6 is rotated, the retracted end 12 of the telescopic pin 9 can be stuck in any wedge-shaped groove 7.

[0025] The hook 8 includes a stopper rod 13, which is hinged on the upper part of the hook 8 and has the other end abutting against the inner side of the free end of the hook 8. The stopper rod 13 and the bottom of the rotating disk 6 are both provided with connecting ears 14, and the two connecting ears 14 are connected by a tension spring 15, which acts as a safety lock for the hook.

[0026] The fixing rod 3 is fixed to the pressure collection part 2 by bolts 16, the strain gauge 1 is connected to the circuit board 17, and the circuit board 17 is connected to the display screen 18 and the battery. The device also includes a shell 19, and a ring 20 is provided at the top center of the shell 19. The strain gauge 1 is horizontally fixed to the bottom of the shell 19. When a heavy object is hung on the hook 8, the pressure collection part 2 is deformed, and the strain gauge 1 transmits the signal to the circuit board 17. After the circuit board 17 processes the signal, the value is displayed on the display screen 18. When in use, the hook 8 is rotated to the side that is convenient for hanging the weighing object, and then the items in the city are hung on the hook 8. When weighing, the hook 8 will not rotate, so the value collected by the strain gauge is stable and the weighing error is small.

[0027] The preferred embodiments of the present invention disclosed above are only used to help explain the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the present invention to specific implementation methods.

Claims

1. A weighing sensor for a crane scale, comprising a strain gauge (1), characterized in that: A pressure collecting portion (2) is provided in the center of the strain gauge (1), a fixing rod (3) is vertically mounted on the pressure collecting portion (2), a fixing plate (4) is fixed at the bottom end of the fixing rod (3), the fixing plate (4) is connected to a rotating plate (6) via a rotating shaft (5), a plurality of wedge-shaped grooves (7) are provided at the bottom of the fixing plate (4), the wedge-shaped grooves (7) are evenly arranged in a circle around the rotating shaft (5), a hanging hook (8) is fixedly connected to the bottom of the rotating plate (6), a plurality of telescopic pins (9) are fixed on the upper surface of the rotating plate (6), and the tops of the telescopic pins (9) are in contact with the wedge-shaped grooves (7).

2. A weighing sensor for a hanging scale according to claim 1, characterized in that: The telescopic pin (9) comprises a base (10), a compression spring (11) is vertically fixed inside the base (10), and a round-head telescopic end (12) is provided at the top of the compression spring (11).

3. A weighing sensor for a hanging scale according to claim 1, characterized in that: The hook (8) comprises a shift rod (13), the shift rod (13) being hinged to the upper part of the hook (8), the other end of which abuts against the inner side of the free end of the hook (8), the shift rod (13) and the bottom of the rotating disk (6) are both provided with connecting ears (14), and the two connecting ears (14) are connected by a tension spring (15).

4. A weighing sensor for a hanging scale according to claim 1, characterized in that: The fixing rod (3) is fixed to the pressure collecting part (2) via bolts (16) at the top and bottom.

5. The weighing sensor for a hanging scale according to claim 1, characterized in that: The strain gauge (1) is connected to a circuit board (17), and the circuit board (17) is connected to a display screen (18) and a battery.

6. A weighing sensor for a hanging scale according to claim 1, characterized in that: It also comprises a housing (19), a hanging ring (20) being provided at the centre of the top of the housing (19), and the strain gauge (1) being fixed horizontally at the bottom of the housing (19).

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