Pressure-resistant weighing sensor

Abstract

The utility model discloses a pressure-resistant weighing sensor, which relates to the technical field of weighing sensors and comprises an outer box, a movable plate is movably connected in the outer box, a supporting device is connected in the middle of the movable plate in a penetrating manner, a connecting cylinder is fixedly connected in the outer box, and a damping mechanism is movably connected in the connecting cylinder. The bottom of the movable plate is fixedly connected with a weighing device, and one side of the weighing device is fixedly connected with a sensor. The resistance strain gauge is fixedly connected with the connecting metal, the connecting metal is connected in a protruding mode, weighing sensing is more accurate, the supporting blocks are connected through the supporting rods, the device is more stable, the supporting devices are connected in the middle, damage to the sensor under the pressure of a heavy object can be reduced, and the measuring accuracy is improved. And the bottom is detached through a connecting nut connected with the base, so that the damping supporting mechanism is convenient to detach and replace, parts are replaced under the condition that the buffering acting force is not obvious, and more cost can be saved when the device is used.

Description

TECHNICAL FIELD

[0001] The utility model relates to weighing sensor technical field, concretely relates to a pressure -proof type weighing sensor. BACKGROUND

[0002] Weighing sensor is actually a kind of device that mass signal is changed into measurable electrical signal output, using sensor should first consider the actual working environment of sensor, this point is crucial to correct selection weighing sensor, it is related to the normal work of sensor and its safety and service life, and even the reliability and safety of entire weighing apparatus, on the basic concept and evaluation method of the main technical indexes of weighing sensor, there is qualitative difference between new and old national standard, mainly S type, cantilever type, wheel spoke type, plate ring type, diaphragm capsule type, bridge type, cylinder type and so on several styles.

[0003] The prior art has the following problems:

[0004] 1, the existing pressure -proof type weighing sensor, weighing pressure support is not stable, middle supporting force lacks, leading to device service time is not long;

[0005] 2, the existing pressure -proof type weighing sensor, under long -term weighing, weighing sensor failure, and internal buffering force, can not be disassembled and replaced, can only be replaced as a whole, make the use cost of device increase. INVENTION CONTENTS

[0006] To solve the above technical problems, the technical scheme adopted by the utility model is:

[0007] A pressure -proof type weighing sensor, including the outer box, the inside movable joint of outer box has movable board, the inside middle of movable board is connected with support device, the inside fixed connection of outer box has connecting barrel, the inside movable connection of connecting barrel has damping mechanism, the bottom fixed connection of movable board has weighing machine, the side fixed connection of weighing machine has sensor.

[0008] The further improvement of the technical scheme of the utility model is that: the support device includes resistance strain gauge, the outer angle of resistance strain gauge is fixedly connected with insulator, the top of resistance strain gauge is fixedly connected with connecting metal, the bottom of resistance strain gauge is fixedly connected with connecting rod, the bottom of connecting rod is fixedly connected with support block, the bottom of support block is fixedly connected with support rod.

[0009] The further improvement of the technical scheme of the utility model is that: the top of resistance strain gauge penetrates the top of movable board, and the bottom of support rod is fixedly connected with the inside of outer box.

[0010] The further improvement in the technical scheme of the utility model lies in that the damping mechanism comprises a contact layer, a damper is fixedly connected to the bottom of the contact layer, a spring is sleeved to the outer wall of the damper, a fixed plate is fixedly connected to the bottom of the damper, a plug-in rod is fixedly connected to the bottom of the fixed plate, and a connecting assembly is plugged into the bottom of the plug-in rod.

[0011] The further improvement in the technical scheme of the utility model lies in that the connecting base comprises a connecting plate, a connecting nut is penetrated through the inside of the connecting plate, and a connecting bottom plate is fixedly connected to the bottom of the connecting nut.

[0012] The further improvement in the technical scheme of the utility model lies in that the connecting plate is movably plugged into the bottom of the connecting assembly, and the top of the connecting base is plugged into the bottom of the damping mechanism from the bottom of the outer box.

[0013] Thanks to the above technical scheme, the utility model has the following technical progress compared with the prior art:

[0014] 1、The utility model provides a pressure -proof load cell, the middle part of movable board is supported and is connected to resistance strain gauge through support device, after the support of movable board is stable, the connection of load cell at the bottom is more stable, makes the top load more accurate, through the fixed connection of support block with connecting rod, resistance strain gauge is fixedly connected with connecting metal, the protruding connection of connecting metal makes the load sensing more accurate, at the same time, the bottom support block is connected through support rod, makes the device fixed more stable, support device is connected in the middle part, can reduce the damage of heavy pressure to sensor, makes the device use time longer.

[0015] 2、The utility model provides a pressure -proof load cell, the installation of connecting cylinder is in the inside of outer box, plays the support limiting effect to the connection of damping mechanism, the top of fixed plate of damping mechanism plays the support damping effect, the inside of connecting cylinder is slidably connected with fixed plate, makes the pressure buffering force connection more convenient, the bottom of fixed plate is plugged into connecting assembly, connecting assembly is fixedly installed at the bottom of connecting cylinder, at the same time, the bottom is connected and disassembled through the connecting nut of connecting base, makes the damping support mechanism convenient to disassemble and replace, replaces the spare part under the condition that the buffering effect is not obvious enough, makes the device use more cost -effective. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is the structure schematic view of the pressure -proof load cell of the utility model;

[0017] Figure 2 It is the structure schematic view of the inside of outer box of the utility model;

[0018] Figure 3 It is the structure schematic view of the support device of the utility model;

[0019] Figure 4 The utility model discloses a damping mechanism's structure schematic view.

[0020] In the drawing: 1, outer box;2, movable plate;3, connecting cylinder;4, support device;5, damping mechanism;6, connecting base;7, weigher;8, sensor;41, resistance strain gauge;42, insulator;43, connecting metal;44, connecting rod;45, support block;46, support rod;51, contact layer;52, damper;53, spring;54, fixed plate;55, plug-in rod;56, connecting assembly;61, connecting bottom plate;62, connecting nut;63, connecting plate. DETAILED DESCRIPTION

[0021] The utility model makes further detailed explanation in combination with example:

[0022] Example 1

[0023] As Figures 1-4 The utility model provides a pressure -proof load cell, including outer box 1, the inside movable joint of outer box 1 has movable plate 2, and the inside middle of movable plate 2 is connected with support device 4 and penetrates, and the inside fixed connection of outer box 1 has connecting cylinder 3, and the inside movable connection of connecting cylinder 3 has damping mechanism 5, and the bottom fixed connection of movable plate 2 has weigher 7, and one side fixed connection of weigher 7 has sensor 8.

[0024] In this embodiment, through the joint action of outer box 1, movable plate 2 and support device 4, the device can be used more conveniently, the inside movable joint of outer box 1 has movable plate 2, and the middle part of movable plate 2 is supported and connected by support device 4, so that the device connection support is more stable, and the periphery of support device 4 is further supported by four sets of damping mechanism 5, so that the device top support can be more stable, and after the stable support of movable plate 2, the bottom weigher 7 is connected more stably, so that the top weighing is more accurate, and the device is used more conveniently.

[0025] Example 2

[0026] As Figures 1-4 On the basis of example 1, the utility model provides a technical scheme: preferably, support device 4 includes resistance strain gauge 41, and the outer angle fixed connection of resistance strain gauge 41 has insulator 42, and the top fixed connection of resistance strain gauge 41 has connecting metal 43, and the bottom fixed connection of resistance strain gauge 41 has connecting rod 44, and the bottom fixed connection of connecting rod 44 has support block 45, and the bottom fixed connection of support block 45 has support rod 46.

[0027] The top of the resistance strain gauge 41 penetrates the top of the movable plate 2, and the bottom of the supporting rod 46 is fixedly connected with the inside of the outer box 1.

[0028] In the embodiment, the device is more convenient to use through the cooperation of the outer box 1 and the supporting device 4, the resistance strain gauge 41 is fixedly connected with the supporting block 45 through the connecting rod 44, the resistance strain gauge 41 is fixedly connected with the connecting metal 43, the connecting metal 43 is protrudingly connected, the weighing sensing is more accurate, meanwhile, the bottom supporting block 45 is connected through the supporting rod 46, the device is more stable, the supporting device 4 is connected in the middle part, the damage of the sensor 8 under the heavy weight pressure is reduced, and the device has a longer service life.

[0029] Embodiment 3

[0030] As shown in Figures 1-4 the embodiment 1, the utility model provides a technical scheme: preferably, the damping mechanism 5 includes the contact layer 51, the bottom of the contact layer 51 is fixedly connected with the damper 52, the outer wall of the damper 52 is sleeved with the spring 53, the bottom of the damper 52 is fixedly connected with the fixed plate 54, the bottom of the fixed plate 54 is fixedly connected with the plug-in rod 55, and the bottom of the plug-in rod 55 is plugged with the connecting assembly 56.

[0031] The connecting base 6 includes the connecting plate 63, and the connecting nut 62 is connected in the inside of the connecting plate 63.

[0032] The connecting plate 63 is movably plugged in the bottom of the connecting assembly 56, and the top of the connecting base 6 is plugged in the bottom of the damping mechanism 5 from the bottom of the outer box 1.

[0033] In the embodiment, the device is more convenient to use through the cooperation of the connecting cylinder 3, the damping mechanism 5 and the connecting base 6, the connecting cylinder 3 is installed in the inside of the outer box 1, supports and limits the connection of the damping mechanism 5, the top of the fixed plate 54 of the damping mechanism 5 supports and dampens, the fixed plate 54 is slidingly connected in the inside of the connecting cylinder 3, the pressure buffering force connection is more convenient, the bottom of the fixed plate 54 is plugged with the connecting assembly 56, the connecting assembly 56 is fixedly installed in the bottom of the connecting cylinder 3, meanwhile, the bottom is detachably connected through the connecting nut 62 of the connecting base 6, the damping supporting mechanism is conveniently disassembled and replaced, the parts are replaced under the condition that the buffering force is not obvious enough, and the device can save cost.

[0034] The working principle of the pressure-resistant weighing sensor will be described below.

[0035] As shown in Figures 1-4When the pressure-resistant weighing sensor is used, the inner box 1 is movably connected with the movable plate 2, the middle part of the movable plate 2 is movably connected with the supporting device 4, the periphery of the supporting device 4 is further movably connected with the four sets of damping mechanisms 5, the movable plate 2 is movably connected with the weighing device 7, the resistance strain gauge 41 is movably connected with the supporting block 45 through the connecting rod 44, the resistance strain gauge 41 is movably connected with the connecting metal 43, the connecting metal 43 is protrudingly connected, the bottom supporting block 45 is movably connected with the supporting rod 46, the supporting device 4 is movably connected with the middle part, the connecting barrel 3 is movably connected with the inner box 1, the fixed plate 54 of the damping mechanism 5 is movably connected with the connecting barrel 3, the bottom of the fixed plate 54 is movably connected with the connecting assembly 56, the connecting assembly 56 is movably connected with the bottom of the connecting barrel 3, the bottom is movably connected with the connecting base 6 through the connecting nut 62, the damping supporting mechanism is convenient to disassemble and replace, the parts are replaced under the condition that the buffering force is not obvious, and the device can be used to save the cost.

[0036] The utility model has been described in detail above, but some modifications or improvements can be made on the basis of the utility model, which is obvious to those skilled in the art. Therefore, the modifications or improvements without departing from the spirit of the utility model are within the protection scope of the utility model.

Claims

1. A pressure-resistant weighing sensor, comprising an outer casing (1) and a connecting base (6) disposed at its bottom, characterized in that: The outer box (1) is movably connected to a movable plate (2), and a support device (4) is connected through the middle of the movable plate (2). The outer box (1) is fixedly connected to a connecting cylinder (3), and a shock-absorbing mechanism (5) is movably connected to the connecting cylinder (3). A weighing device (7) is fixedly connected to the bottom of the movable plate (2), and a sensor (8) is fixedly connected to one side of the weighing device (7).

2. The pressure-resistant weighing sensor according to claim 1, characterized in that: The support device (4) includes a resistance strain gauge (41), an insulator (42) is fixedly connected to the outer corner of the resistance strain gauge (41), a connecting metal (43) is fixedly connected to the top of the resistance strain gauge (41), a connecting rod (44) is fixedly connected to the bottom of the resistance strain gauge (41), a support block (45) is fixedly connected to the bottom of the connecting rod (44), and a support rod (46) is fixedly connected to the bottom of the support block (45).

3. A pressure-resistant weighing sensor according to claim 2, characterized in that: The top of the resistance strain gauge (41) extends through the top of the movable plate (2), and the bottom of the support rod (46) is fixedly connected to the inside of the outer box (1).

4. A pressure-resistant weighing sensor according to claim 1, characterized in that: The damping mechanism (5) includes a contact layer (51), a damper (52) is fixedly connected to the bottom of the contact layer (51), a spring (53) is sleeved on the outer wall of the damper (52), a fixing plate (54) is fixedly connected to the bottom of the damper (52), a plug rod (55) is fixedly connected to the bottom of the fixing plate (54), and a connecting component (56) is plugged into the bottom of the plug rod (55).

5. A pressure-resistant weighing sensor according to claim 4, characterized in that: The connecting base (6) includes a connecting plate (63), and a connecting nut (62) is connected through the interior of the connecting plate (63). A connecting base plate (61) is fixedly connected to the bottom of the connecting nut (62).

6. A pressure-resistant weighing sensor according to claim 5, characterized in that: The connecting plate (63) is movably inserted into the bottom of the connecting assembly (56), and the top of the connecting base (6) is inserted from the bottom of the outer box (1) into the bottom of the shock absorption mechanism (5).

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