Mobile weighing device

Abstract

The utility model discloses a mobile weighing device which comprises a main body structure, a weighing sensor, a protection structure, a grabbing structure and a driving structure. One end of the weighing sensor is fixedly connected with the main body structure, and the other end of the weighing sensor is fixedly connected with the grabbing structure. The protection structure comprises a limiting part and a movable part, the movable part is connected with the driving structure, a matching part is arranged at one end of the movable part, the driving structure is used for driving the movable part to be switched between a protection state and a weighing state, and in the protection state, one end of the movable part moves upwards to make the matching part make contact with the grabbing structure; the grabbing structure moves upwards along with the movable part and makes contact with the limiting part. In the weighing state, one end of the movable part moves downwards to enable the matching part to be separated from the grabbing structure, and the grabbing structure moves downwards under the action of gravity and is separated from the limiting part. Weighing is completed in the process of grabbing an object to move, occupied space is reduced, site layout is more compact, takt time is shortened, and weighing efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of weighing, in particular to a mobile weighing device. Background Art

[0002] The existing automatic weighing function is implemented by placing the scale on a base, and the mechanical claw or conveyor automatically places the object to be weighed on the scale, and then automatically takes the object away after weighing. This weighing method takes up a lot of space and has a long cycle time, which affects the factory layout and increases equipment costs.

[0003] The existing weighing clamps have the problems of large size, low weighing accuracy, long stabilization time, short life, etc. These problems exist either simultaneously or individually, which limits the scope of use of the weighing clamps. Utility Model Content

[0004] In view of the above-mentioned technical problems, the purpose of the utility model is to provide a mobile weighing device that can achieve high-precision weighing in a smaller volume, while reducing the stabilization time and increasing the overall service life.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A mobile weighing device comprises a main structure, a weighing sensor, a protection structure, a grabbing structure and a driving structure, wherein one end of the weighing sensor is fixedly connected to the main structure, and the other end of the weighing sensor is fixedly connected to the grabbing structure;

[0007] The protection structure includes a limiter and a movable part, wherein the limiter is fixed on the main structure and faces the grabbing structure, the movable part is connected to the driving structure, and a matching portion is provided at one end of the movable part, and the driving structure is used to drive the movable part to switch between a protection state and a weighing state.

[0008] When in the protection state, the one end of the movable member moves upward to make the matching portion contact the grabbing structure, and the grabbing structure moves upward with the movable member and contacts the limiting member;

[0009] When in the weighing state, the one end of the movable member moves downward to separate the matching portion from the grabbing structure, and the grabbing structure moves downward under gravity and separates from the limiting member.

[0010] Preferably, the grabbing structure comprises a mounting plate and a grabbing assembly, the mounting plate is fixedly connected to the weighing sensor, the limiting member is symmetrically arranged on both sides of the mounting plate and is arranged opposite to the mounting plate, and in the protection state, the mounting plate is in contact with the limiting member;

[0011] The grabbing assembly is arranged below the mounting plate.

[0012] Preferably, the height of the limiting member is adjustable, and when in the protection state, the upper surface of the mounting plate abuts against the bottom end of the limiting member.

[0013] Preferably, the movable member is arranged below the weighing sensor, one end of the movable member is rotatably connected to the main structure, and the other end of the movable member is provided with the matching portion.

[0014] Preferably, a recess is provided on each of the two opposite sides of the grasping structure, and two matching protrusions are provided on one end of the movable part, and the protrusions are partially or completely placed in the recess, and in the protective state, the upper end surface of the protrusion contacts the upper end surface of the recess.

[0015] Preferably, an adjusting member is further included, and the length of the adjusting member entering the recess is adjustable. When in the protection state, the two convex parts of the movable member are respectively in contact with the two adjusting members at the same time.

[0016] Preferably, the movable member is located above the grasping structure and is vertically arranged, the upper end of the movable member is slidably connected to the driving structure, the lower end of the movable member is provided with two opposite hooks, the two hooks are respectively arranged on both sides of the grasping structure, and the upper end surface of the hook is provided with the matching portion;

[0017] A first lifting assembly is provided between the movable part and the main structure, the upper end of the first lifting assembly is connected to the movable part, and the lower end of the first lifting assembly is connected to the main structure. The driving end of the driving structure drives the first lifting assembly to lift and lower to drive the movable part to switch between the protection state and the weighing state.

[0018] Preferably, an arch bridge portion is provided at the upper end of the grabbing structure, the arch bridge portion protrudes from the upper end surface of the main structure, and the arch bridge portion has the freedom to move up and down in the vertical direction;

[0019] The upper end of the movable part is connected to the arch bridge part, and the lower end of the movable part is connected to the main structure. The driving end of the driving structure drives the movable part to rise and fall, so that the movable part switches between the protection state and the weighing state.

[0020] Preferably, the grasping structure is an electric clamp or an electric suction cup.

[0021] Preferably, the power line and the control line of the grabbing structure are connected to the main control circuit board of the weighing device through a thin flat cable, and the thin flat cable does not change shape in the protection state and the weighing state.

[0022] Due to the application of the above technical solution, the utility model has the following advantages compared with the prior art:

[0023] The utility model mobile weighing device uses a driving structure to change the position of the movable part so that the device switches between the protection state and the weighing state. When in the protection state, one end of the movable part moves upward to make the matching part contact with the grasping structure, the grasping structure moves upward with the movable part and contacts with the limiter, and the weighing sensor is not subjected to load. At this time, when the weighing device moves with the mechanical arm or module, the weighing sensor can be protected to prevent the weighing sensor from being damaged by acceleration and deceleration, thereby improving the overall service life; when in the weighing state, one end of the movable part moves downward to separate the matching part from the grasping structure, the grasping structure moves downward under gravity and separates from the limiter, and the weighing sensor weighs the weight of the load according to the deformation amount. At this time, the weighed object is fixedly connected to the weighing sensor without the influence of shaking, etc., shortening the weighing stabilization time, fully exerting the performance of the weighing sensor, and improving the weighing accuracy. When switching between the protection state and the weighing state, there is no need to place the object to be weighed on the scale to complete the weighing and then take the object to be weighed away. The weighing is completed at the same time during the process of grabbing the object and moving, reducing space occupation, making the site layout more compact, shortening the beat time, and improving the weighing efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The technical solution of the utility model is further described below in conjunction with the accompanying drawings:

[0025] Attached Figure 1 It is a three-dimensional diagram of the mobile weighing device of the utility model;

[0026] Attached Figure 2 It is a side view of the mobile weighing device of the utility model;

[0027] Attached Figure 3 For attachment Figure 2 AA section view;

[0028] Attached Figure 4 It is a schematic diagram of the mobile weighing device of the utility model in a protection state;

[0029] Attached Figure 5 It is a schematic diagram of the mobile weighing device of the utility model in a weighing state;

[0030] Attached Figure 6 It is a three-dimensional diagram of the hidden part structure of the mobile weighing device of the utility model;

[0031] Attached Figure 7 It is an exploded diagram of the mobile weighing device of the utility model;

[0032] Attached Figure 8 It is a three-dimensional diagram of another embodiment of the mobile weighing device of the utility model;

[0033] Attached Fig. 9 It is a cross-sectional view of another embodiment of the mobile weighing device of the utility model;

[0034] Attached Fig.10 A three-dimensional diagram of another embodiment of the mobile weighing device of the utility model;

[0035] Attached Fig.11 It is a cross-sectional view of another embodiment of the mobile weighing device of the utility model.

[0036] Among them: 1. Main structure; 11. Axle seat; 2. Weighing sensor; 3. Mounting plate; 4. Movable part; 41. Protrusion; 42. Hook; 5. Driving structure; 6. Limiting part; 7. Adjusting part; 8. Thin cable; 9. Main control circuit board; 10. Grasping structure; 12. First lifting component; 13. Arch bridge part. DETAILED DESCRIPTION

[0037] The preferred embodiments of the present invention are described in detail below in conjunction with the accompanying drawings so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more definite definition of the protection scope of the present invention.

[0038] It should be noted that when a component is referred to as being "fixed to" another component, it may be directly on the other component or there may also be a component centered. When a component is considered to be "connected to" another component, it may be directly connected to the other component or there may also be a component centered. When a component is considered to be "set on" another component, it may be directly set on the other component or there may also be a component centered. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only.

[0039] Embodiment 1:

[0040] As attached Figure 1-7 The mobile weighing device described in this embodiment is shown, including a main structure 1, a weighing sensor 2, a protective structure, a grasping structure 10 and a driving structure 5, one end of the weighing sensor 2 is fixedly connected to the main structure 1, and the other end of the weighing sensor 2 is fixedly connected to the grasping structure 10.

[0041] The protection structure includes a limiter 6 and a movable member 4. The limiter 6 is fixed on the main structure 1 and faces the grabbing structure 10. The grabbing structure 10 is used to grab the object to be weighed. The movable member 4 is connected to the driving structure 5, and a matching portion is provided at one end of the movable member 4. The driving structure 5 is used to drive the movable member 4 to switch between the protection state and the weighing state.

[0042] The grabbing structure 10 includes a mounting plate 3 and a grabbing assembly. The mounting plate 3 is fixedly connected to the weighing sensor 2. The limiters 6 are symmetrically arranged on both sides of the mounting plate 3 and face the mounting plate 3. In the protection state, the mounting plate 3 contacts the limiters 6. The grabbing assembly is installed below the mounting plate 3.

[0043] The height of the limiter 6 is adjustable. When in the protection state, the upper surface of the mounting plate 3 abuts against the bottom end of the limiter 6. The movable member 4 is installed below the weighing sensor 2. One end of the movable member 4 is rotatably connected to the main structure 1, and the other end of the movable member 4 is provided with a matching portion. A recess is provided on each of the opposite sides of the grasping structure 10. One end of the movable member 4 is provided with two matching protrusions 41. The protrusions 41 are partially or completely placed in the recess. In the protection state, the upper end surface of the protrusion 41 contacts the upper end surface of the recess. This embodiment also includes an adjusting member 7. The length of the adjusting member 7 entering the recess is adjustable. When in the protection state, the two protrusions of the movable member 4 contact the two adjusting members 7 at the same time, respectively, so that the weighing sensor 2 is not subjected to load, the forces on both sides of the mounting plate 3 are evenly applied, the weighing sensor 2 is not subjected to the effect of unbalanced load, and the service life is improved.

[0044] The grasping structure 10 is an electric clamp or an electric suction cup.

[0045] The power line and control line of the grabbing structure 10 are connected to the main control circuit board 9 of the weighing device through a thin flat cable 8. The thin flat cable 8 does not change shape in the protection state and the weighing state, and its influence can be subtracted as a tare item, thereby improving the overall weighing accuracy.

[0046] As attached Figure 4 As shown, when in the protection state, one end of the movable part 4 moves upward to make the matching part contact with the grasping structure 10, and the grasping structure 10 moves upward with the movable part 4 and contacts with the limit member 6. The movable part 4 rotates upward to lift the mounting plate 3, so that the weighing sensor 2 is not subjected to load. At this time, the weighing sensor 2 is fixed at the zero position, and the acceleration generated when the weighing device is moved is all provided by the movable part 4 and the limit member 6. The weighing sensor 2 is not affected by the additional load generated by acceleration and deceleration, thereby improving the service life of the weighing sensor 2.

[0047] As attached Figure 5As shown, when in the weighing state, one end of the movable part 4 moves downward to separate the matching part from the grasping structure 10, the grasping structure 10 moves downward under the gravity and separates from the limiter 6, the movable part 4 rotates downward under the action of gravity, and the movable part 4 is disengaged from the mounting plate 3. At this time, the mounting plate 3 fixedly connected to the weighing sensor 2 bears the weight of the grasping structure 10 and the object carried by the grasping structure 10, and the weighing sensor 2 is slightly deformed, so that the upper surface of the mounting plate 3 is separated from the limiter 6, and the mounting plate 3 is in a free state. The weighing sensor 2 weighs the weight of the load according to the deformation amount, and after subtracting the weight of the grasping structure 10, the weight of the object can be obtained. At this time, the performance of the weighing sensor 2 can be fully exerted, the weighing accuracy can be improved, and the weighed object is fixedly connected to the weighing sensor 2 without the influence of shaking, which shortens the weighing stabilization time.

[0048] Embodiment 2:

[0049] As attached Figure 8-9 The figure shows another embodiment of the mobile weighing device of the utility model. In this embodiment, the movable part 4 is located above the grasping structure and is installed vertically. The upper end of the movable part 4 is slidably connected to the driving structure 5. The lower end of the movable part 4 is formed with two opposite hooks 42. The two hooks 42 are respectively located on both sides of the grasping structure 10, and the upper end surface of the hook 42 is provided with a mating portion.

[0050] A first lifting assembly 12 is installed between the movable part 4 and the main structure 1. The upper end of the first lifting assembly 12 is connected to the movable part 4, and the lower end of the first lifting assembly 12 is connected to the main structure 1. The driving end of the driving structure 5 drives the first lifting assembly 12 to lift and drive the movable part 4 to switch between the protection state and the weighing state. In this embodiment, the first lifting assembly 12 is two slidingly connected wedge blocks, the upper wedge block is connected to the movable part 4, and the lower wedge block is connected to the main structure 1.

[0051] Embodiment 3:

[0052] As attached Figure 10-11 The figure shows another embodiment of the mobile weighing device of the utility model. In this embodiment, an arch bridge portion 13 is provided at the upper end of the grasping structure 10. The arch bridge portion 13 protrudes from the upper end surface of the main structure 1, and the arch bridge portion 13 has freedom in the vertical direction.

[0053] The upper end of the movable member 4 is connected to the arch bridge portion 13, and the lower end of the movable member 4 is connected to the main structure 1. The driving end of the driving structure 5 drives the movable member 4 to rise and fall so that the movable member 4 switches between the protection state and the weighing state.

[0054] The mobile weighing device of the utility model uses a driving structure 5 to change the position of the movable part 4 so that the device switches between a protection state and a weighing state. When in the protection state, one end of the movable part 4 moves upward to make the matching part contact with the grasping structure 10, and the grasping structure 10 moves upward with the movable part 4 and contacts with the limiter 6, and the weighing sensor 2 is not subjected to load. At this time, when the weighing device moves with the mechanical arm or module, the weighing sensor 2 can be protected to prevent the weighing sensor 2 from being damaged by acceleration and deceleration, thereby improving the overall service life; when in the weighing state, one end of the movable part 4 moves downward to separate the matching part from the grasping structure 10, and the grasping structure 10 moves downward under gravity and separates from the limiter 6, and the weighing sensor 2 weighs the weight of the load according to the deformation amount. At this time, the weighed object is fixedly connected to the weighing sensor 2 without the influence of shaking, etc., thereby shortening the weighing stabilization time, fully exerting the performance of the weighing sensor 2, and improving the weighing accuracy.

[0055] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A mobile weighing device, characterized in that: It comprises a main structure (1), a weighing sensor (2), a protective structure, a grasping structure (10) and a driving structure (5), wherein one end of the weighing sensor (2) is fixedly connected to the main structure (1), and the other end of the weighing sensor is fixedly connected to the grasping structure; The protection structure comprises a limiter (6) and a movable member (4), wherein the limiter is fixed on the main structure and faces the grasping structure, the movable member is connected to the driving structure, and a matching portion is provided at one end of the movable member, and the driving structure is used to drive the movable member to switch between a protection state and a weighing state. When in the protection state, the one end of the movable member (4) moves upward so that the matching portion contacts the grasping structure, and the grasping structure moves upward along with the movable member and contacts the limiting member; When in a weighing state, the one end of the movable member (4) moves downward to separate the matching portion from the grasping structure, and the grasping structure moves downward under gravity and separates from the limiting member.

2. The mobile weighing device according to claim 1, characterized in that: The grabbing structure (10) comprises a mounting plate (3) and a grabbing assembly, the mounting plate being fixedly connected to the weighing sensor (2), the limiting member being symmetrically arranged on both sides of the mounting plate and facing the mounting plate, and in the protection state, the mounting plate is in contact with the limiting member; The grabbing assembly is arranged below the mounting plate.

3. The mobile weighing device according to claim 2, characterized in that: The height of the limiting member (6) is adjustable, and when in a protective state, the upper surface of the mounting plate (3) abuts against the bottom end of the limiting member (6).

4. The mobile weighing device according to claim 1, characterized in that: The movable part is arranged below the weighing sensor, one end of the movable part is rotatably connected to the main structure, and the other end of the movable part is provided with the matching part.

5. The mobile weighing device according to claim 4, characterized in that: A recess is provided on each of the two opposite sides of the gripping structure, and two matching protrusions are provided on one end of the movable member. The protrusions are partially or completely placed in the recesses. In the protective state, the upper end surfaces of the protrusions are in contact with the upper end surfaces of the recesses.

6. The mobile weighing device according to claim 5, characterized in that: It also includes an adjusting member, the length of which is adjustable when entering the recessed portion. When in the protection state, the two convex portions of the movable member are in contact with the two adjusting members respectively and simultaneously.

7. The mobile weighing device according to claim 1, characterized in that: The movable member is located above the grasping structure and is vertically arranged, the upper end of the movable member is slidably connected to the driving structure, the lower end of the movable member is provided with two opposite hook claws, the two hook claws are respectively arranged on both sides of the grasping structure, and the upper end surface of the hook claw is provided with the matching portion; A first lifting assembly is provided between the movable part and the main structure, the upper end of the first lifting assembly is connected to the movable part, and the lower end of the first lifting assembly is connected to the main structure. The driving end of the driving structure drives the first lifting assembly to lift and lower to drive the movable part to switch between the protection state and the weighing state.

8. The mobile weighing device according to claim 1, characterized in that: An arch bridge portion is provided at the upper end of the grabbing structure, the arch bridge portion protrudes from the upper end surface of the main structure, and the arch bridge portion has the freedom to move up and down in the vertical direction; The upper end of the movable part is connected to the arch bridge part, and the lower end of the movable part is connected to the main structure. The driving end of the driving structure drives the movable part to rise and fall, so that the movable part switches between the protection state and the weighing state.

9. The mobile weighing device according to claim 1, characterized in that: The grasping structure is an electric clamp or an electric suction cup.

10. The mobile weighing device according to claim 1, characterized in that: The power supply line and control line of the grabbing structure are connected to the main control circuit board (9) of the weighing device via a thin flat cable (8), and the thin flat cable (8) does not change shape in the protection state and the weighing state.

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