Limiting device of electronic weighing instrument

Abstract

The utility model relates to the technical field of electronic weighing instruments, in particular to an electronic weighing instrument limiting device which comprises a fixing seat and a weighing body, a vertical plate is fixedly arranged at the top end of the fixing seat, a pipe body is fixedly embedded in the vertical plate in a penetrating mode, a sleeve is slidably sleeved on one side, close to the weighing body, of the pipe body, and a supporting rod is fixedly arranged on the inner wall of the sleeve. The other end of the supporting rod extends into the pipe body and is fixedly connected with a push block, the supporting rod is slidably sleeved with a first spring, one end of the first spring is fixedly connected with the inner wall of the sleeve, the other end of the first spring is fixedly connected with the outer wall of the pipe body, and a first sliding block is slidably arranged in the pipe body. A point contact switch is fixedly arranged on the side, close to the push block, of the first sliding block, and an alarm is fixedly arranged on the lower portion of the vertical plate, the device can be conveniently adjusted, meanwhile, the switch can be effectively protected, and therefore the practicability of the device and the safety in the using process are effectively improved.

Description

Technical Field

[0001] The utility model relates to a limiting device for an electronic weighing instrument, belonging to the technical field of electronic weighing instruments. Background Art

[0002] Electronic weighing instruments are widely used in factories, mines, ports, warehouses, docks and other industries for weighing and measuring various materials. Electronic weighing instruments include electronic truck scales, electronic track scales, quantitative packaging scales, steel scales, etc. They are generally composed of a scale body, a weighing sensor, a weighing display instrument, a mechanical force transmission and a limit mechanism. In order to ensure the accuracy of the scale, a limit device needs to be set to avoid economic losses.

[0003] According to the disclosure of an electronic weighing device with announcement number CN206362445U, the device comprises a foundation, a scale body and a limit device, wherein the limit device comprises a limit frame and a limit bolt, wherein the limit frame is fixed on the foundation, the limit bolt is located at the upper end of the limit frame, the limit bolt is connected to the limit frame, a connecting plate is provided at the lower side of the limit bolt, a detection switch is provided at the lower end of the connection plate, the detection switch is fixed on the connecting plate, and a limit baffle is provided at the left end of the scale body corresponding to the limit bolt and the detection switch. The electronic weighing device provided by the utility model has a reasonable design, low cost, can reliably detect the limit gap and alarm, and has high reliability. When the above device is in use, since the detection switch is exposed to the outside, it is easy to cause the detection switch to be damaged by impact. At the same time, when adjusting the distance between the detection switch and the scale body, it is necessary to loosen the positioning nut and then adjust the limit bolt to a suitable position, which makes the adjustment of the device inconvenient. Utility Model Content

[0004] The purpose of the utility model is to provide an electronic scale limit device, which can facilitate the adjustment of the device and effectively protect the switch, thereby effectively improving the practicality of the device and the safety during use, so as to solve the problems raised in the above background technology.

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

[0006] A limit device for an electronic weighing instrument comprises a fixed seat and a weighing body, a vertical plate is fixedly provided on the top of the fixed seat, a tube body is fixedly embedded through the vertical plate, a sleeve is slidably sleeved on a side of the tube body close to the weighing body, a support rod is fixedly provided on the inner wall of the sleeve, the other end of the support rod extends into the tube body and is fixedly connected with a push block, a spring is slidably sleeved on the support rod, one end of the spring is fixedly connected to the inner wall of the sleeve, the other end of the spring is fixedly connected to the outer wall of the tube body, a slider is slidably provided in the tube body, a touch switch is fixedly provided on the side of the slider close to the push block, an alarm is fixedly provided on the lower part of the vertical plate, and the touch switch is electrically connected to the alarm.

[0007] Furthermore, a slider 2 is slidably provided in the tube body, and the slider 2 is located on a side of the slider 1 away from the push block, and the slider 2 is fixedly connected to the slider 1 via a spring 2.

[0008] Furthermore, a nut is fixedly provided on one side of the tube body away from the sleeve, an adjusting screw is rotatably provided on the inner thread of the nut, and one end of the adjusting screw extends into the tube body and is rotatably connected to the second slider.

[0009] Furthermore, a fixing plate is provided on the sliding sleeve of the adjusting screw, and a plurality of connecting rods are fixedly provided in a symmetrical array on one side of the fixing plate close to the scale body, and the other ends of the connecting rods extend to the other side of the vertical plate and are fixedly connected to the top plate.

[0010] Furthermore, a limiting ring is provided on the fixing sleeve of the adjusting screw, and the limiting ring abuts against a side adjacent to the fixing plate.

[0011] Furthermore, an elastic pad is fixedly provided on one side of the sleeve close to the scale body.

[0012] Furthermore, the connecting rods are provided with scale lines.

[0013] The beneficial effects of the utility model are:

[0014] The utility model is provided with a sleeve, a push block, a nut, an adjusting screw and a top plate. When in use, the touch switch is placed in the tube body, so that the touch switch can be effectively protected. When the scale body squeezes the sleeve, the sleeve will drive the push block to move through the support rod, and the push block squeezes the touch switch, so that the alarm can be triggered to alarm. When the touch switch is subjected to a large force, the touch switch will squeeze the spring two through the slider one, so that the touch switch can be effectively prevented from being damaged by a large force. By rotating the adjusting screw, the adjusting screw drives the slider two to move through the nut, and the slider two drives the slider one to move through the spring two, so that the slider one drives the touch switch to move to a suitable position. By setting a scale line, it is easy to understand the distance between the touch switch and the push block. When the adjusting screw moves, the adjusting screw can drive the fixed plate to move through the limit ring, and the fixed plate will drive the top plate to move through the connecting rod. The utility model can facilitate the adjustment of the device and effectively protect the switch, thereby effectively improving the practicality of the device and the safety of use. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. They are used to explain the present invention together with the specific embodiments of the present invention and do not constitute a limitation to the present invention.

[0016] Figure 1 This is a front view of a limit device for an electronic weighing instrument of the utility model;

[0017] Figure 2 This is a schematic diagram of the overall structure of a limit device for an electronic weighing instrument of the utility model;

[0018] Figure 3 The utility model is a kind of electronic weighing instrument limit device Figure 2 The enlarged view of point A in the middle;

[0019] Figure 4 It is a side view of a tube body and a support rod of a limit device of an electronic weighing instrument of the utility model;

[0020] Numbers in the figure: 1. fixed seat; 2. scale body; 3. vertical plate; 4. tube body; 5. sleeve; 6. support rod; 7. push block; 8. spring 1; 9. slider 1; 10. touch switch; 11. alarm; 12. slider 2; 13. spring 2; 14. nut; 15. adjusting screw; 16. fixed plate; 17. connecting rod; 18. top plate; 19. limit ring; 20. elastic pad. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] Example 1 Please refer to Figure 1-Figure 4 , the utility model provides a technical solution:

[0023] A limiting device for an electronic weighing instrument comprises a fixed seat 1 and a weighing body 2, a vertical plate 3 is fixedly provided on the top of the fixed seat 1, a tube body 4 is fixedly embedded through the vertical plate 3, a sleeve 5 is slidably sleeved on the side of the tube body 4 close to the weighing body 2, a support rod 6 is fixedly provided on the inner wall of the sleeve 5, the other end of the support rod 6 extends into the tube body 4 and is fixedly connected with a push block 7, a spring 8 is slidably sleeved on the support rod 6, one end of the spring 8 is fixedly connected to the inner wall of the sleeve 5, and the other end of the spring 8 is fixedly connected to the outer wall of the tube body 4, a slider 9 is slidably provided in the tube body 4, a touch switch 10 is fixedly provided on the side of the slider 9 close to the push block 7, an alarm 11 is fixedly provided on the lower part of the vertical plate 3, and the touch switch 10 is electrically connected to the alarm 11.

[0024] Specifically, Figure 1-Figure 4 As shown, a slider 12 is slidably provided in the tube body 4, and the slider 12 is located on the side of the slider 19 away from the push block 7. The slider 12 and the slider 9 are fixedly connected by a spring 13. A nut 14 is fixedly provided on the side of the tube body 4 away from the sleeve 5. An adjusting screw 15 is rotatably provided on the inner thread of the nut 14. One end of the adjusting screw 15 extends into the tube body 4 and is rotatably connected to the slider 12. By rotating the adjusting screw 15, the adjusting screw 15 drives the slider 12 to move through the nut 14. At this time, the slider 12 will drive the slider 9 to move through the spring 13, so that the slider 9 drives the touch switch 10 to move to a suitable position.

[0025] Specifically, Figure 1-Figure 4As shown, a fixing plate 16 is slidably sleeved on the adjusting screw 15, and a plurality of connecting rods 17 are fixedly arranged in a symmetrical array on one side of the fixing plate 16 close to the scale body 2, and the other ends of the connecting rods 17 extend to the other side of the vertical plate 3 and are fixedly connected to a top plate 18, and a limiting ring 19 is fixedly sleeved on the adjusting screw 15, and the limiting ring 19 abuts against a side adjacent to the fixing plate 16, and when the adjusting screw 15 moves, the adjusting screw 15 can drive the fixing plate 16 to move through the limiting ring 19, and the fixing plate 16 will drive the top plate 18 to move through the connecting rod 17.

[0026] Specifically, Figure 1-Figure 4 As shown, an elastic pad 20 is fixedly provided on one side of the sleeve 5 close to the scale body 2. By providing the elastic pad 20, damage to the sleeve 5 during the conflict between the scale body 2 and the sleeve 5 can be avoided.

[0027] Example 2 Please refer to Figure 1-Figure 4 The difference between this embodiment and the first embodiment is that the connecting rod 17 is provided with scale lines, and the scale lines are provided to facilitate understanding of the distance between the touch switch 10 and the push block 7.

[0028] Working principle of the utility model: when in use, fix the fixing seat 1 at a suitable position, and then rotate the adjusting screw 15, so that the adjusting screw 15 drives the slider 12 to move through the nut 14, and the slider 12 will drive the slider 19 to move through the spring 13, so that the slider 19 drives the touch switch 10 to move to a suitable position, when the adjusting screw 15 moves, the adjusting screw 15 can drive the fixing plate 16 to move through the limit ring 19, and the fixing plate 16 will drive the top plate 18 to move through the connecting rod 17 By setting the scale line, it is easy to understand the distance between the touch switch 10 and the push block 7. When the scale body 2 squeezes the sleeve 5, the sleeve 5 will push the push block 7 to move through the support rod 6, so that the push block 7 squeezes the touch switch 10, and then the alarm 11 is sounded. At this time, the top plate 18 limits the symmetrical body 2. When the touch switch 10 is subjected to a large force, the touch switch 10 will squeeze the spring 2 13 through the slider 1 9, thereby effectively preventing the touch switch 10 from being damaged by a large force.

[0029] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A limit device for an electronic weighing instrument, comprising a fixing seat (1) and a weighing body (2), characterized in that: A vertical plate (3) is fixedly provided on the top of the fixed seat (1), a tube body (4) is fixedly embedded through the vertical plate (3), a sleeve (5) is slidably sleeved on the side of the tube body (4) close to the scale body (2), a support rod (6) is fixedly provided on the inner wall of the sleeve (5), the other end of the support rod (6) extends into the tube body (4) and is fixedly connected to a push block (7), a spring (8) is slidably sleeved on the support rod (6), one end of the spring (8) is fixedly connected to the inner wall of the sleeve (5), and the other end of the spring (8) is fixedly connected to the outer wall of the tube body (4), a slider (9) is slidably provided in the tube body (4), a touch switch (10) is fixedly provided on the side of the slider (9) close to the push block (7), an alarm (11) is fixedly provided on the lower part of the vertical plate (3), and the touch switch (10) and the alarm (11) are electrically connected.

2. The electronic weighing device according to claim 1, characterized in that: A second slide block (12) is slidably disposed in the tube body (4). The second slide block (12) is located on a side of the first slide block (9) away from the push block (7). The second slide block (12) is fixedly connected to the first slide block (9) via a second spring (13).

3. The electronic weighing instrument limit device according to claim 2, characterized in that: A nut (14) is fixedly provided on one side of the tube body (4) away from the sleeve (5), and an adjusting screw (15) is rotatably provided on the inner thread of the nut (14), and one end of the adjusting screw (15) extends into the tube body (4) and is rotatably connected to the second slider (12).

4. The electronic weighing instrument limit device according to claim 3, characterized in that: A fixing plate (16) is slidably sleeved on the adjusting screw rod (15), and a plurality of connecting rods (17) are fixedly arranged in a symmetrical array on one side of the fixing plate (16) close to the scale body (2), and the other ends of the connecting rods (17) extend to the other side of the vertical plate (3) and are fixedly connected to a top plate (18).

5. The electronic weighing instrument limit device according to claim 4, characterized in that: A limiting ring (19) is provided on the fixing sleeve of the adjusting screw rod (15), and the limiting ring (19) abuts against a side adjacent to the fixing plate (16).

6. The electronic weighing instrument limit device according to claim 1, characterized in that: An elastic pad (20) is fixedly provided on one side of the sleeve (5) close to the scale body (2).

7. The electronic weighing instrument limit device according to claim 4, characterized in that: The connecting rods (17) are each provided with scale lines.

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