CN219869917U - Weighing mechanism and carbon dioxide fire extinguisher box - Google Patents

Abstract

The utility model relates to the technical field of fire extinguisher boxes, in particular to a weighing mechanism and a carbon dioxide fire extinguisher box, which comprise a weighing assembly, wherein the weighing assembly comprises a bottom plate, a weighing piece, a clamping piece and a centering piece; the weighing piece is fixedly connected to the upper end face of the bottom plate, and the clamping piece and the centering piece are embedded in the weighing piece. The clamping piece can play a role in protecting the first spring, and prevents long-time compression from changing the internal molecular structure of the first spring, so that the first spring loses original elasticity and strength and the accuracy of detection is directly affected. The centering piece can play a role in centering an object to be weighed when weighing, so that uneven weight distribution during weighing is prevented, and inaccurate weighing results are caused.

Description

Weighing mechanism and carbon dioxide fire extinguisher box

Technical Field

The utility model relates to the technical field of fire extinguisher boxes, in particular to a weighing mechanism and a carbon dioxide fire extinguisher box.

Background

The fire extinguisher box is a box body specially used for long-term fixed storage of portable fire extinguishers, and can be divided into two types of ground placement and wall embedding according to the placement type. The opening mode can be divided into a door opening type and a flip type. The fire extinguisher case should be manufactured using a metal material such as a thin steel plate, an aluminum alloy, etc.

The fire extinguisher case has the following problems when storing the fire extinguisher: 1. in order to facilitate the inspection personnel to weigh and detect the fire extinguisher, a weighing device is arranged in a fire extinguisher box in the prior art, and the fire extinguisher is placed on the weighing device to facilitate weighing. However, the long-time pressing of the fire extinguisher against the weighing device can have an adverse effect on the weighing device. Such as spring scales, springs within which are subject to long term compression can be susceptible to damage. 2. When a fire disaster occurs, people cannot easily find the position of the fire extinguisher in the case of confusion, so that the fire disaster rescue is not timely.

Disclosure of Invention

This section is intended to outline some aspects of embodiments of the utility model and to briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section as well as in the description of the utility model and in the title of the utility model, which may not be used to limit the scope of the utility model.

The present utility model has been made in view of the above or the problem in the prior art that the long-time pressing of the fire extinguisher against the weighing device brings about adverse effects to the weighing device, such as a spring balance, in which springs are easily damaged by being compressed for a long period of time.

In order to solve the technical problems, the utility model provides the following technical scheme: the weighing mechanism comprises a weighing assembly, wherein the weighing assembly comprises a bottom plate, a weighing piece, a clamping piece and a centering piece;

the weighing piece is fixedly connected to the upper end face of the bottom plate, and the clamping piece and the centering piece are embedded in the weighing piece.

As a preferred embodiment of the weighing mechanism of the present utility model, wherein: the weighing piece comprises a rectangular block, a first spring, a placing block, a through groove and an indicating strip, wherein the first groove body is formed in the upper end face of the rectangular block, the placing block is located inside the first groove body and is in sliding connection with the first groove body, one end of the first spring is fixedly connected to the bottom of the first groove body, the other end of the first spring is fixedly connected to the lower end face of the placing block, the through groove is formed in the front end face of the rectangular block, the indicating strip is fixedly connected to the front end face of the placing block, and the indicating strip penetrates through the through groove and extends to the outer side of the rectangular block, and scale marks are arranged on the front end face of the rectangular block, close to the position of the through groove.

As a preferred embodiment of the weighing mechanism of the present utility model, wherein: the clamping piece comprises a pole, gears and clamping strips, a cavity is formed in the placing block, the pole is located in the middle of the cavity and is rotationally connected to the placing block through a bearing, the gears are fixedly connected to the circumferential surface of the pole, the clamping strips are two and are located on the front side and the rear side of the gears respectively, teeth are arranged on the clamping strips, close to the gears, and one end of each clamping strip, away from the gears, is connected with the rectangular block in a sliding mode and extends to the outside of the rectangular block.

As a preferred embodiment of the weighing mechanism of the present utility model, wherein: the clamping piece further comprises a groove body III, a pressing rod, a cross rod, a groove body IV and a spring III, wherein the groove body III is arranged on a groove wall of the groove body and corresponds to the clamping strip in position, the pressing rod is close to the front side of the clamping strip, the pressing rod is slidably connected to the rectangular block and extends downwards to the inside of the groove body III, the cross rod is located in the groove body III and fixedly connected to the pressing rod, the groove body IV is arranged at the lower end of the groove body III and corresponds to the pressing rod in position up and down, one end of the spring III is fixedly connected to the lower end of the groove body IV, the other end of the spring IV is fixedly connected to the bottom end of the pressing rod, and the clamping strip extends to the inside of the groove body III and the end of the clamping strip is of an inclined surface design.

As a preferred embodiment of the weighing mechanism of the present utility model, wherein: the inside of placing the piece is close to the card strip position has seted up cell body two, cell body two inside fixedly connected with gag lever post, gag lever post circumference sliding connection has the slider, the slider with card strip fixed connection, spring two has been cup jointed to the gag lever post outside, spring two one end fixed connection in the slider, other end fixed connection in cell body two tip.

As a preferred embodiment of the weighing mechanism of the present utility model, wherein: the centering piece comprises a sliding groove, a sliding rod, an arc-shaped plate, a vertical rod and a moving groove, wherein the sliding groove is provided with a plurality of annular equidistant holes and is arranged on the upper end face of the placing block, the sliding rod is positioned inside the sliding groove and is connected with the sliding groove in a sliding mode, the arc-shaped plate is fixedly connected with the sliding rod, the moving groove is positioned on the lower side of the sliding groove and is communicated with the cavity, and the vertical rod is fixedly connected with the lower end face of the sliding rod and penetrates through the moving groove to extend downwards to the inside of the cavity.

As a preferred embodiment of the weighing mechanism of the present utility model, wherein: the centering piece further comprises an adjusting plate, the adjusting plate is located on the upper side of the gear and fixedly connected to the circumferential surface of the post, a plurality of arc grooves are formed in the adjusting plate at equal intervals in an annular mode, the number of the arc grooves and the number of the sliding grooves are always same, and the vertical rods extend downwards to the corresponding arc grooves.

As a preferred embodiment of the weighing mechanism of the present utility model, wherein: the upper end face of the placement block is provided with an object to be weighed, and the circumferential surface of the lower end of the object to be weighed is fixedly connected with an annular bump.

As a preferred embodiment of the weighing mechanism of the present utility model, wherein: the weighing assembly is provided with two pressing rods, the two pressing rods are in an inverted U shape, two ends of each pressing rod are respectively inserted into the two rectangular blocks, and pedals are fixedly connected to the middle of the upper ends of the pressing rods.

The utility model has the beneficial effects that: the clamping piece can play a role in protecting the first spring, and prevents long-time compression from changing the internal molecular structure of the first spring, so that the first spring loses original elasticity and strength and the accuracy of detection is directly affected.

In view of the fact that in the actual use process, when a fire disaster occurs, people cannot easily find the position of the fire extinguisher in the case of confusion, and therefore the problem of untimely fire disaster rescue exists.

In order to solve the technical problems, the utility model also provides the following technical scheme: a carbon dioxide fire extinguisher box comprises a weighing mechanism and a box body;

the front side of the box body is hinged with an opening and closing door, the upper end of the box body is provided with an alarm lamp, the alarm lamp is connected to a remote control switch in a control manner, and the opening and closing door is made of transparent glass;

the bottom plate fixed connection in inside the box bottom.

The utility model has the beneficial effects that: when a fire disaster occurs, the alarm lamp is controlled to be turned on through the remote control switch, alarm sounds are generated when the alarm lamp flashes, the position of the fire extinguisher is reminded, and the time is shortened for rescue.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the description of the embodiments will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art. Wherein:

fig. 1 is an overall schematic of a weighing mechanism.

Fig. 2 is a cross-sectional view of the weighing mechanism.

Fig. 3 is a cross-sectional view of the placement block.

Fig. 4 is a cross-sectional view of the clip strip and the second groove body.

Fig. 5 is a structural view of the engaging member and the centering member.

Fig. 6 is a diagram showing a distribution of the movement slots.

Fig. 7 is a structural view of the regulating plate.

Fig. 8 is a structural view of a carbon dioxide fire extinguisher case.

Detailed Description

In order that the above-recited objects, features and advantages of the present utility model will become more readily apparent, a more particular description of the utility model will be rendered by reference to specific embodiments thereof which are illustrated in the appended drawings.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present utility model, but the present utility model may be practiced in other ways other than those described herein, and persons skilled in the art will readily appreciate that the present utility model is not limited to the specific embodiments disclosed below.

Further, reference herein to "one embodiment" or "an embodiment" means that a particular feature, structure, or characteristic can be included in at least one implementation of the utility model. The appearances of the phrase "in one embodiment" in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments.

Example 1

Referring to fig. 1-2, a first embodiment of the present utility model provides a weighing mechanism.

Specifically, the weighing mechanism comprises a weighing assembly 100, wherein the weighing assembly 100 comprises a bottom plate 101, a weighing piece 102, a clamping piece 103 and a centering piece 104;

the weighing piece 102 is fixedly connected to the upper end face of the bottom plate 101, and the clamping piece 103 and the centering piece 104 are embedded in the weighing piece 102.

The weighing piece 102 comprises a rectangular block 102a, a first spring 102b, a placing block 102c, a through groove 102d and an indication strip 102e, wherein the upper end face of the rectangular block 102a is provided with a first groove body 102a-1, the placing block 102c is positioned in the first groove body 102a-1 and is connected with the first groove body 102a-1 in a sliding manner, one end of the first spring 102b is fixedly connected with the bottom of the first groove body 102a-1, the other end of the first spring is fixedly connected with the lower end face of the placing block 102c, the through groove 102d is formed in the front end face of the rectangular block 102a, the indication strip 102e is fixedly connected with the front end face of the placing block 102c, the indication strip 102e penetrates through the groove 102d and extends to the outer side of the rectangular block 102a, the indication strip 102e is fixedly connected with a pointer, and a scale mark is arranged at the position, close to the through groove 102d, of the front end face of the rectangular block 102 a. The first spring 102b is provided in plurality.

The upper end face of the placement block 102c is provided with a to-be-weighed object 200, and the circumferential surface of the lower end of the to-be-weighed object 200 is fixedly connected with an annular bump 200a.

In use, when no object is placed on the placement block 102c, the scale on the indicator bar 102e where the pointer is pointing is zero. When the to-be-weighed object 200 is placed on the placement block 102c, the placement block 102c slides downwards in the groove body one 102a-1 and further compresses the spring one 102b, the indicator bar 102e moves downwards synchronously with the placement block 102c, when the placement block 102c does not move downwards any more, the indicator needle on the indicator bar 102e indicates the corresponding scale, and the weight of the to-be-weighed object 200 is obtained according to the scale number, and the principle is similar to that of a spring balance, and specific details are not repeated.

Example 2

Referring to fig. 1 to 7, a second embodiment of the present utility model is different from the previous embodiment in that the engaging member 103 and the centering member 104 of the weighing mechanism are provided.

Specifically, the clamping piece 103 includes a post 103a, a gear 103b and a clamping strip 103c, a cavity 102c-1 is formed in the placing block 102c, the post 103a is located in the middle of the cavity 102c-1 and is rotationally connected to the placing block 102c through a bearing, the gear 103b is fixedly connected to the circumferential surface of the post 103a, the clamping strip 103c is two and is located at the front side and the rear side of the gear 103b respectively, teeth are arranged at the position, close to the gear 103b, of the clamping strip 103c and meshed with the gear 103b, and one end, far away from the gear 103b, of the clamping strip 103c is slidably connected with the rectangular block 102a and extends to the outside of the rectangular block 102 a.

The clamping piece 103 further comprises a groove body III 103d, a pressing rod 103e, a cross rod 103f, a groove body IV 103g and a spring III 103h, wherein the groove body III 103d is arranged on the groove wall of the groove body I102 a-1 and corresponds to the clamping strip 103c in position, the pressing rod 103e is close to the front clamping strip 103c, the pressing rod 103e is connected to the rectangular block 102a in a sliding mode and extends downwards to the inside of the groove body III 103d, the cross rod 103f is positioned in the groove body III 103d and fixedly connected to the pressing rod 103e, the groove body IV 103g is arranged at the lower end of the groove body III 103d and corresponds to the pressing rod 103e in position up and down, one end of the spring III 103h is fixedly connected to the lower end of the groove body IV 103g, the other end of the spring III 103e is fixedly connected to the bottom end of the pressing rod 103e, and the clamping strip 103c extends to the inside of the groove body III 103d and the end of the clamping strip 103d is of an inclined surface design.

The position inside the placing block 102c, which is close to the clamping strip 103c, is provided with a second groove body 103c-1, a limiting rod 103c-2 is fixedly connected inside the second groove body 103c-1, the circumference surface of the limiting rod 103c-2 is slidably connected with a sliding block 103c-3, the sliding block 103c-3 is fixedly connected with the clamping strip 103c, a second spring 103c-4 is sleeved outside the limiting rod 103c-2, one end of the second spring 103c-4 is fixedly connected with the sliding block 103c-3, and the other end of the second spring is fixedly connected with the end part of the second groove body 103 c-1.

The centering piece 104 comprises a sliding groove 104a, a sliding rod 104b, an arc-shaped plate 104c, a vertical rod 104d and a moving groove 104e, wherein a plurality of sliding grooves 104a are formed in the upper end face of the placing block 102c in an annular equidistant mode, the sliding rod 104b is located inside the sliding groove 104a and is connected with the sliding groove 104a in a sliding mode, the arc-shaped plate 104c is fixedly connected with the sliding rod 104b, the moving groove 104e is located on the lower side of the sliding groove 104a and is communicated with the cavity 102c-1, and the vertical rod 104d is fixedly connected with the lower end face of the sliding rod 104b and extends downwards to the inside of the cavity 102c-1 through the moving groove 104 e.

The centering piece 104 further comprises an adjusting plate 104f, the adjusting plate 104f is located on the upper side of the gear 103b and fixedly connected to the circumferential surface of the post 103a, a plurality of arc grooves 104f-1 are formed in the adjusting plate 104f in an annular equidistant mode, the number of the arc grooves 104f-1 and the number of the sliding grooves 104a are all the same, and a plurality of vertical rods 104d extend downwards to the inside of the corresponding arc grooves 104 f-1.

The weighing assembly 100 is provided with two pressing rods 103e which are in an inverted U shape, two ends of each pressing rod 103e are respectively inserted into the two rectangular blocks 102a, and the middle part of the upper end of each pressing rod 103e is fixedly connected with a pedal 103e-1.

When in use, the clamping strip 103c is inserted into the groove body III 103d in the initial state to play a role in limiting and supporting the placing block 102c, so that the placing block 102c is prevented from continuously pressing the first spring 102b under the pressing of the object 200 to be weighed, and the long-time compression enables the molecular structure in the first spring 102b to change, thereby losing the original elasticity and strength and directly affecting the detection accuracy.

When the weight 200 to be weighed is needed, the pedal 103e-1 is stepped down so that the pressing rod 103e moves downward, and the cross rod 103f fixedly connected with the pressing rod 103e can press the clamping strip 103c outwards until the clamping strip 103c is separated from the groove body III 103d when the pressing rod 103e moves downward. In this process, the movement of the clamping bar 103c drives the gear 103b to rotate, so that the post 103a rotates clockwise, the post 103a rotates to drive the adjusting plate 104f to rotate clockwise, and the vertical rod 104d moves towards the middle of the adjusting plate 104f under the action of the arc-shaped groove 104f-1, so that the arc-shaped plate 104c is driven to move towards the direction of the weighing object 200 by the sliding rod 104 b. When the clamping strip 103c is separated from the groove body three 103d, the plurality of arc plates 104c are just attached to the circumferential surface of the belt fixing object 200, and the belt weighing object 200 is located in the middle of the upper end surface of the placing block 102 c. Then, the object to be fixed 200 slides downwards in the groove body one 102a-1 along with the placement block 102c and further compresses the spring one 102b, the indicator bar 102e moves downwards along with the placement block 102c synchronously, when the placement block 102c does not move downwards any more, the indicator needle on the indicator bar 102e indicates the corresponding scale, and the weight of the object to be weighed 200 is obtained according to the scale number, and the principle is similar to that of a spring balance, and the specific details are not repeated.

When the weighing is completed, the object to be weighed 200 is lifted upward. The arc plate 104c protrudes from the slide bar 104b by a distance, so that when the weight 200 to be weighed rises, the annular protruding block 200a fixedly connected with the circumferential surface of the lower end of the weight will cling to the lower end surface of the arc plate 104c and drive the arc plate 104c to move upwards. The arc plate 104c moves upwards to drive the placing plate 102c to move upwards, in the process, the clamping strip 103c is clung to the inner wall of the first groove body 102a-1, and a plurality of balls are arranged at the contact position of the clamping strip 103c and the first groove body 102a-1, so that the friction force between the clamping strip 103c and the first groove body 102a-1 when moving upwards and downwards is negligible. When the pedal 103e-1 is not stressed any more, the pressing rod 103e returns to the original position under the action of the spring III 103h, when the clamping strip 103c rises to the position of the groove body III 103d, the clamping strip 103c pops up to the inside of the groove body III 103d under the action of the spring II 103c-4, at the moment, the arc plate 104c is not used for clamping the object 200 to be weighed any more, and at the moment, the upward lifting of the object 200 to be weighed is stopped. The arc plate 104c does not clamp the to-be-weighed 200, so that the to-be-weighed 200 can be conveniently taken without influencing the use.

In summary, the engaging member 103 can protect the first spring 102b, and prevent the long-time compression from changing the internal molecular structure of the first spring 102b, thereby losing the original elasticity and strength and directly affecting the accuracy of detection. The centering piece 104 can play a role in centering the object to be weighed 200 during weighing, and prevent uneven weight distribution during weighing, thereby causing inaccurate weighing results.

Example 3

Referring to fig. 1 to 8, a third embodiment of the present utility model is a carbon dioxide fire extinguisher cabinet, which is different from the previous embodiment.

Specifically, a weighing mechanism and a box 300 are included;

the front side of the box body 300 is hinged with an opening and closing door 300a, the upper end of the box body 300 is provided with an alarm lamp 300b, the alarm lamp 300b is connected to a remote control switch in a control manner, and the opening and closing door 300a is made of transparent glass;

the bottom plate 101 is fixedly connected to the inside of the bottom end of the box 300, and the object 200 to be weighed is a carbon dioxide fire extinguisher.

During the use, during daily inspection, whether the device of inside carbon dioxide fire extinguisher is good can be observed through glass door 300a that opens and shuts, when need carry out weighing to the fire extinguisher and examine, open door 300a and weigh the fire extinguisher. When a fire disaster occurs, the alarm lamp 300b is controlled to be turned on through the remote control switch, and the alarm lamp 300b generates alarm sounds while flashing lights, so that the position of a fire extinguisher is reminded to people, and the time is shortened for rescue.

It is important to note that the construction and arrangement of the utility model as shown in the various exemplary embodiments is illustrative only. Although only a few embodiments have been described in detail in this disclosure, those skilled in the art who review this disclosure will readily appreciate that many modifications are possible (e.g., variations in sizes, dimensions, structures, shapes and proportions of the various elements, values of parameters (e.g., temperature, pressure, etc.), mounting arrangements, use of materials, colors, orientations, etc.) without materially departing from the novel teachings and advantages of the subject matter described in this application. For example, elements shown as integrally formed may be constructed of multiple parts or elements, the position of elements may be reversed or otherwise varied, and the nature or number of discrete elements or positions may be altered or varied. Accordingly, all such modifications are intended to be included within the scope of present utility model. The order or sequence of any process or method steps may be varied or re-sequenced according to alternative embodiments. In the claims, any means-plus-function clause is intended to cover the structures described herein as performing the recited function and not only structural equivalents but also equivalent structures. Other substitutions, modifications, changes and omissions may be made in the design, operating conditions and arrangement of the exemplary embodiments without departing from the scope of the present utility models. Therefore, the utility model is not limited to the specific embodiments, but extends to various modifications that nevertheless fall within the scope of the appended claims.

Furthermore, in order to provide a concise description of the exemplary embodiments, all features of an actual implementation may not be described (i.e., those not associated with the best mode presently contemplated for carrying out the utility model, or those not associated with practicing the utility model).

It should be appreciated that in the development of any such actual implementation, as in any engineering or design project, numerous implementation-specific decisions may be made. Such a development effort might be complex and time consuming, but would nevertheless be a routine undertaking of design, fabrication, and manufacture for those of ordinary skill having the benefit of this disclosure.

It should be noted that the above embodiments are only for illustrating the technical solution of the present utility model and not for limiting the same, and although the present utility model has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the technical solution of the present utility model may be modified or substituted without departing from the spirit and scope of the technical solution of the present utility model, which is intended to be covered in the scope of the claims of the present utility model.

Claims (10)

1. A weighing mechanism, characterized in that: comprising the steps of (a) a step of,

weighing assembly (100), weighing assembly (100) include bottom plate (101), weigh piece (102), fastener (103) and centering piece (104), weigh piece (102) fixed connection in bottom plate (101) up end, fastener (103) with centering piece (104) all inlay set up in weigh in piece (102).

2. The weighing mechanism of claim 1, wherein: the weighing piece (102) comprises a rectangular block (102 a), a first spring (102 b), a placing block (102 c), a through groove (102 d) and an indication strip (102 e), wherein a first groove body (102 a-1) is formed in the upper end face of the rectangular block (102 a), the placing block (102 c) is located inside the first groove body (102 a-1) and is connected with the first groove body (102 a-1) in a sliding mode, one end of the first spring (102 b) is fixedly connected to the bottom of the first groove body (102 a-1), the other end of the first spring is fixedly connected to the lower end face of the placing block (102 c), the through groove (102 d) is formed in the front end face of the rectangular block (102 a), the indication strip (102 e) is fixedly connected to the front end face of the placing block (102 c), and the indication strip (102 e) penetrates through the through groove (102 d) and extends to the outer side of the rectangular block (102 a), and graduation marks are arranged on the front end face of the rectangular block (102 a) close to the position of the through groove (102 d).

3. The weighing mechanism of claim 2, wherein: the clamping piece (103) comprises a post (103 a), a gear (103 b) and clamping strips (103 c), a cavity (102 c-1) is formed in the placing block (102 c), the post (103 a) is located in the middle of the cavity (102 c-1) and is rotationally connected with the placing block (102 c) through a bearing, the gear (103 b) is fixedly connected with the circumferential surface of the post (103 a), the clamping strips (103 c) are two and are respectively located on the front side and the rear side of the gear (103 b), teeth are formed in the position, close to the gear (103 b), of the clamping strips (103 c), and one end, away from the gear (103 b), of the clamping strips (103 c) is connected with the rectangular block (102 a) in a sliding mode and extends to the outer portion of the rectangular block (102 a).

4. A weighing mechanism according to claim 3, wherein: the clamping piece (103) further comprises a groove body III (103 d), a pressing rod (103 e), a cross rod (103 f), a groove body IV (103 g) and a spring III (103 h), wherein the groove body III (103 d) is arranged on the groove wall of the groove body I (102 a-1) and corresponds to the clamping strip (103 c) in position, the pressing rod (103 e) is close to the front side of the clamping strip (103 c), the pressing rod (103 e) is connected with the rectangular block (102 a) in a sliding mode and extends downwards to the inside of the groove body III (103 d), the cross rod (103 f) is located inside the groove body III (103 d) and fixedly connected with the pressing rod (103 e), the groove body IV (103 g) is arranged at the lower end of the groove body III (103 d) and corresponds to the pressing rod (103 e) in a vertical position, one end of the spring III (103 h) is fixedly connected to the lower end of the groove body IV (103 g), the other end of the pressing rod 103 e) is fixedly connected to the bottom end of the pressing rod (103 e) and extends to the end of the groove body III (103 d) in an inclined plane.

5. The weighing mechanism of claim 4, wherein: the novel clamping device is characterized in that a second groove body (103 c-1) is formed in the position, close to the clamping strip (103 c), inside the second groove body (103 c-1) is fixedly connected with a limiting rod (103 c-2), the circumferential surface of the limiting rod (103 c-2) is slidably connected with a sliding block (103 c-3), the sliding block (103 c-3) is fixedly connected with the clamping strip (103 c), a second spring (103 c-4) is sleeved outside the limiting rod (103 c-2), one end of the second spring (103 c-4) is fixedly connected with the sliding block (103 c-3), and the other end of the second spring is fixedly connected with the end of the second groove body (103 c-1).

6. A weighing mechanism according to claim 3, wherein: the centering piece (104) comprises a sliding groove (104 a), a sliding rod (104 b), an arc-shaped plate (104 c), a vertical rod (104 d) and a moving groove (104 e), wherein the sliding groove (104 a) is provided with a plurality of annular equidistant openings on the upper end face of the placement block (102 c), the sliding rod (104 b) is positioned inside the sliding groove (104 a) and is in sliding connection with the sliding groove (104 a), the arc-shaped plate (104 c) is fixedly connected with the sliding rod (104 b), the moving groove (104 e) is positioned on the lower side of the sliding groove (104 a) and is communicated with the cavity (102 c-1), and the vertical rod (104 d) is fixedly connected with the lower end face of the sliding rod (104 b) and penetrates through the moving groove (104 e) to extend downwards into the cavity (102 c-1).

7. The weighing mechanism of claim 6, wherein: the centering piece (104) further comprises an adjusting plate (104 f), the adjusting plate (104 f) is located on the upper side of the gear (103 b) and fixedly connected to the circumferential surface of the post rod (103 a), a plurality of arc grooves (104 f-1) are formed in the adjusting plate (104 f) at equal intervals in an annular mode, the arc grooves (104 f-1) and the sliding grooves (104 a) are all the time, and a plurality of vertical rods (104 d) extend downwards to the corresponding arc grooves (104 f-1).

8. A weighing mechanism according to any one of claims 2 to 7, characterized in that: the upper end face of the placement block (102 c) is provided with an object to be weighed (200), and the circumferential surface of the lower end of the object to be weighed (200) is fixedly connected with an annular bump (200 a).

9. The weighing mechanism of claim 4, wherein: the weighing assembly (100) is provided with two pressing rods (103 e), each pressing rod is in an inverted U shape, two ends of each pressing rod are respectively inserted into two rectangular blocks (102 a), and a pedal (103 e-1) is fixedly connected to the middle of the upper end of each pressing rod (103 e).

10. A carbon dioxide fire extinguisher case which characterized in that: comprising a weighing mechanism according to any one of claims 1 to 9, and a housing (300);

the front side of the box body (300) is hinged with an opening and closing door (300 a), the upper end of the box body (300) is provided with an alarm lamp (300 b), the alarm lamp (300 b) is connected to a remote control switch in a control manner, and the opening and closing door (300 a) is made of transparent glass;

the bottom plate (101) is fixedly connected to the inside of the bottom end of the box body (300).