CN217877971U - Bridge column type weighing sensor module - Google Patents

Abstract

The utility model provides a bridge post formula weighing sensor module, including bridge post formula sensor, go up pressure head and bottom plate, bridge post formula sensor's lower bearing end shaping is for controlling side cut undergauge cylinder structure, bottom plate upper surface central point puts and offers and supplies to bear the end down plant and prevent changeing spacing controlling the circular counter bore of side cut, be fixed with on the bottom plate and carry out the type of falling U piece of 360 degrees oscillating quantities restrictions all around to bridge post formula sensor, the round hole that supplies bridge post formula sensor upper end to wear to put is seted up to type of falling U piece upper surface, bridge post formula sensor lower extreme sets up on the bottom plate, the type of falling U piece round hole is passed to the upper end, offset with last pressure head through the steel ball, install the protection casing in round hole department. The utility model discloses simple structure is reliable, processing is convenient, with low costs, can realize quick installation, and all directions all are provided with prevent down the device that topples, play limiting displacement to the horizontal yawing force that the module receives and each azimuth off-loading, effectively prevent that the sensor swing is too big and the weighing platform from toppling to can realize exchanging generally with current bridge type sensor.

Description

Bridge column type weighing sensor module

Technical Field

The utility model relates to a weighing device, concretely relates to bridge pillar formula weighing sensor module is applicable to electronic weighing equipment such as electronic truck scale, rail weighbridge, material jar balance.

Background

At present, the column type sensor is widely applied to various electronic weighing devices such as various automobile scales, rail scales, axle load scales, material tank scales and the like. The column sensor generally comprises connecting pieces such as an upper pressure head, a lower pressure head, an upper mounting plate, a lower mounting plate and a lateral pull rod. The column type sensor has compact structure, stable and reliable performance and excellent dynamic response performance, and is very suitable for manufacturing high-precision sensors.

For example, chinese utility model patent No. ZL200420020485.2, "column weighing sensor", includes a column type elastic body, a resistance strain gauge is fixed on the surface of the column type elastic body, the resistance strain gauge is formed into a certain wheatstone bridge to output a voltage signal which changes with the weight, an envelope for protecting the resistance strain gauge is fixed outside the column type elastic body, the height-diameter ratio of the column type elastic body is 2.5-4, the number of the resistance strain gauges is four, and the four resistance strain gauges are uniformly adhered on the surface of the middle part of the column type elastic body. The sensor keeps the advantages of simple structure and easy manufacture of the traditional column sensor, can overcome the defect of low congenital measurement precision of the column sensor, and achieves higher precision in the aspects of linearity, side resistance, torsion resistance, azimuth error and the like.

However, the above-mentioned column weighing sensor is high in the whole gravity center in use like the existing column sensor, and is easy to topple over, which results in high requirements for weighing platform limit, weighing platform strength and foundation strength in the use process. Meanwhile, the column type weighing sensor usually realizes rotation prevention through a limiting pin, but the limiting pin is easy to fall off, the failure rate is high, and the practicability is not strong; the sensor and the junction of the bearing accessory are easily affected by impurities such as sand and stones, so that the weighing precision is not high. The key point is that the bridge type weighing sensor is not universally interchangeable with the bridge type weighing sensor products which are most popular in the existing market.

Disclosure of Invention

The utility model aims to solve the technical problem that a simple structure is reliable, processing convenient bridge column formula weighing sensor module is provided to foretell technical current situation, has to prevent changeing and prevent empting characteristics, can effectively protect sensor and equipment, and can realize exchanging universally with bridge type weighing sensor.

The utility model provides a technical scheme that above-mentioned technical problem adopted does: the utility model provides a bridge column formula weighing sensor module, includes bridge column type sensor, goes up pressure head and bottom plate, its characterized in that: the undergauge cylinder structure that the end shaping was cut edge about for of bearing down of bridge column type sensor, the upper surface central point of bottom plate puts the lower end of bearing who offers the bridge column type sensor and plants and prevent changeing spacing the round counter bore of cutting edge about, be fixed with on the bottom plate and carry out the inverted U type spare of 360 degrees oscillating quantity restrictions all around to the bridge column type sensor, the upper surface central point of inverted U type spare puts the round hole of wearing the upper end of offering the supply bridge column type sensor, the lower extreme setting of bridge column type sensor is on the bottom plate, the round hole of inverted U type spare is passed to the upper end of bridge column type sensor, offset through steel ball and last pressure head, the protection casing of protecting the steel ball is installed in the round hole department of inverted U type spare.

As an improvement, the middle part of the bridge column type sensor is cylindrical, the upper end of the bridge column type sensor is a reducing upper bearing end, the upper surface of the upper bearing end is formed into a concave spherical surface matched with the lower end of the steel ball, the lower surface of the upper pressure head is a concave spherical surface matched with the upper surface of the steel ball, and the upper bearing end penetrates through an upper end round hole of the inverted U-shaped piece to be matched with a central hole of the silica gel protective cover in a sleeved mode.

Furthermore, the protection casing is ball bowl type silica gel protection casing, and the protection casing setting is in the upper surface of the type of falling U piece, around the position of round hole, and the ball bowl downwardly extending of protection casing hugs closely the round hole and puts the laminating with the outer wall cover of the last bearing end of bridge pillar formula sensor, and the steel ball sets up in the ball bowl of protection casing, shelves on last bearing end.

Furthermore, the edge position of the protective cover is provided with a plurality of counter bores which are fixed with the upper surface of the inverted U-shaped piece through screws.

Furthermore, the U-shaped spare is stamping forming as an organic whole, and the upper surface of the U-shaped spare is the square plane of horizontally, and the lower extreme of the U-shaped spare is fixed in the left and right sides of bottom plate through welded mode or riveted mode.

Furthermore, the left side and the right side of the inverted U-shaped piece are of structures with wide middle parts and narrow upper parts and lower parts, and weight-reducing hollow parts are arranged on the left side and the right side of the inverted U-shaped piece.

Finally, the lower bearing end of the bridge column type sensor is not limited to a reducing cylinder structure with left and right trimming edges, and can also adopt an oval shape with left and right trimming edges, and correspondingly, the left and right trimming circular counter bores on the upper surface of the base plate can also adopt left and right trimming oval counter bores.

Compared with the prior art, the utility model has the advantages of: the bottom plate is provided with an edge-cutting circular counter bore structure, so that the rotation prevention and the limitation of the sensor are realized; the inverted U-shaped part is integrally formed by punching, the processing is convenient, the cost is low, the operation is simple and reliable, and the effective limitation on the front-back and left-right 360-degree swinging quantity of the sensor is realized; a silica gel protective cover is arranged at the round hole of the inverted U-shaped part, so that the sensor can be well reset; the upper bearing end adopts a spherical surface and steel ball structure, the steel ball has very good resetting performance, high-precision acquisition is realized, the precision and the stability of the sensor can be improved, and the upper pressure head adopts an inwards concave spherical surface structure, so that the bridge type sensor can be exchanged with the existing market. The utility model discloses simple structure is reliable, processing is convenient, with low costs, can realize quick installation, all is provided with in each direction and prevents down the device that topples, plays limiting displacement to the horizontal yawing force that the module received and the unbalance loading in each position, prevents effectively that the sensor swing is too big and the weighing platform topples to can realize exchanging generally with current bridge type sensor.

Drawings

Fig. 1 is a schematic structural diagram of an embodiment of the present invention;

FIG. 2 is a side view of FIG. 1;

FIG. 3 is a schematic structural view of an inverted U-shaped member;

FIG. 4 is a schematic structural view of a silica gel shield;

fig. 5 is an exploded view of an embodiment of the present invention.

Detailed Description

The present invention will be described in further detail with reference to the following embodiments.

As shown in fig. 1 to 5, a bridge column type weighing sensor module comprises a bridge column type sensor 1, an upper pressure head 4, a steel ball 2, a bottom plate 3, an inverted U-shaped piece 5 and a silica gel protective sleeve 6, wherein the middle part of the bridge column type sensor 1 is cylindrical, the upper end and the lower end of the bridge column type sensor are an upper bearing end 11 and a lower bearing end 12 which are in reducing diameter, the lower bearing end 12 is formed into a reducing diameter cylindrical structure with left and right trimming edges, the central position of the upper surface of the bottom plate 3 is provided with a circular counter bore 31 which is used for inserting the lower bearing end 12 of the bridge column type sensor 1 and preventing rotation and limiting left and right trimming edges, and the bridge column type sensor 1 is inserted into the circular counter bore 31 with left and right trimming edges of the bottom plate 3 through the lower bearing end 12 to prevent rotation. The inverted U-shaped piece 5 is formed by stamping integrally, the upper surface of the inverted U-shaped piece 5 is a plane, the lower end of the inverted U-shaped piece 5 is fixed on the left side and the right side of the bottom plate 3 in a welding mode or a riveting mode, and the inverted U-shaped piece 5 is used for limiting the swing amount of the bridge pillar type sensor 1 by 360 degrees in the front-back, left-right and left-right directions. The upper surface central point of the inverted U-shaped part 5 is provided with a round hole 51 for the upper bearing end 11 of the bridge column type sensor 1 to penetrate, the lower bearing end 12 of the bridge column type sensor 1 is arranged on the bottom plate 3, the upper bearing end 11 of the bridge column type sensor 1 penetrates through the round hole 51 of the inverted U-shaped part 5 and is abutted against the upper pressure head 4 through the steel ball 2, and the protective cover 6 is arranged at the round hole 51 of the inverted U-shaped part 5 to protect the steel ball 2. The upper surface of the upper bearing end 11 is formed into a concave spherical surface 111 matched with the lower end of the steel ball 2, the lower surface of the upper pressure head 4 is a concave spherical surface 41 matched with the upper surface of the steel ball 2, and the upper bearing end 11 penetrates through an upper end round hole 51 of the inverted U-shaped piece 5 to be matched with a central hole of the protective cover 6 in a sleeved mode. The protective cover 6 is a spherical bowl type silica gel protective cover, the protective cover 6 is arranged on the upper surface of the inverted U-shaped part 5 and surrounds the round hole 51, the spherical bowl 61 of the protective cover 6 extends downwards to be tightly attached to the round hole 51 and be sleeved with the outer wall of the upper bearing end 11 of the bridge column type sensor 1, and the steel ball 2 is arranged in the spherical bowl of the protective cover 6 and is placed on the upper bearing end 11. The edge of the protective cover 6 is provided with a plurality of counter bores 62 which are fixed with the upper surface of the inverted U-shaped piece 5 through screws. The left and right sides of the inverted U-shaped piece 5 are of a structure with a wide middle part and a narrow upper part and a narrow lower part, and the left and right sides of the inverted U-shaped piece 5 are provided with weight-reducing hollowed-out parts 52.

In addition, the lower bearing end 12 of the bridge pillar type sensor 1 is not limited to the reducing cylindrical structure with left and right cut edges, but can also adopt an oval shape with left and right cut edges, and correspondingly, the left and right cut edge circular counter bores 31 on the upper surface of the bottom plate 3 can also adopt left and right cut edge oval counter bores.

The specific structure inside the bridge sensor 1 is consistent with the prior art, and the description is not repeated here.

In the embodiment, the sensor is effectively prevented from rotating by the matching of the left and right trimming circular counter bores 31 and the lower bearing end 12 of the bridge column type sensor 1, which are arranged on the bridge column type sensor 1 and the bottom plate 3. Through setting up the type of falling U piece 5, realize carrying out effective restriction to the 360 degrees oscillating masses all around of bridge post formula sensor 1 for each direction all is provided with prevents down and prevents overturning the device, plays limiting displacement to the horizontal yawing force that the module received and the unbalance loading in each position, effectively protects sensor and equipment, makes truck scale etc. be in best measurement accuracy all the time simultaneously. The upper pressure head 4 and the steel ball 2 are used for realizing the interchange use with the bridge type sensor.

During operation, the bridge column type sensor 1 is placed on the bottom plate 3, the steel ball 2 is placed on the concave spherical surface 111 of the upper bearing end 11, and weighing load is transferred to the bridge column type sensor 1 through the upper pressure head 4. The bottom plate 3 is provided with a left and right trimming circular counter bore 31 which is matched with the lower bearing end 12 of the bridge pillar type sensor 1, so that the sensor can effectively prevent rotation. The sensor can prevent falling and overturning by mutually sleeving and matching the inverted U-shaped piece 5, the upper bearing end 11 and the protective cover 6. Because each direction all is provided with prevents down and prevents the device that topples, plays limiting displacement to the horizontal yawing force that the module received and the unbalance loading in each position, effectively protects sensor and equipment. The steel ball 2 is placed on the concave spherical surface 111 of the upper bearing end 11, the effective moving space of the steel ball 2 is ensured through the protective cover 6, the steel ball 2 has good resetting performance, and the precision and the stability of the sensor can be improved.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of improvements and embellishments can be made without departing from the technical principle of the present invention, and these improvements and embellishments should also be regarded as the protection scope of the present invention.

Claims (10)

1. The utility model provides a bridge column formula weighing sensor module, includes bridge column formula sensor, goes up pressure head and bottom plate, its characterized in that: the undergauge cylinder structure that the end shaping was cut edge about for of bearing down of bridge column type sensor, the upper surface central point of bottom plate puts the lower end of bearing who offers the bridge column type sensor and plants and prevent changeing spacing the round counter bore of cutting edge about, be fixed with on the bottom plate and carry out the inverted U type spare of 360 degrees oscillating quantity restrictions all around to the bridge column type sensor, the upper surface central point of inverted U type spare puts the round hole of wearing the upper end of offering the supply bridge column type sensor, the lower extreme setting of bridge column type sensor is on the bottom plate, the round hole of inverted U type spare is passed to the upper end of bridge column type sensor, offset through steel ball and last pressure head, the protection casing of protecting the steel ball is installed in the round hole department of inverted U type spare.

2. The bridge pillar load cell module of claim 1, wherein: the middle part of bridge column formula sensor is cylindrical, and the upper end of bridge column formula sensor bears the end for the last of undergauge, goes up the upper surface shaping that bears the end for the concave sphere of the lower extreme complex with the steel ball, goes up the lower surface of pressure head for the concave sphere of the upper surface complex with the steel ball, goes up the upper end round hole that bears the end and pass the type of falling U and put the cooperation with the centre bore cover of silica gel protection casing.

3. The bridge pillar load cell module of claim 2, wherein: the protective cover is a ball bowl type silica gel protective cover, the protective cover is arranged on the upper surface of the inverted U-shaped piece and around the round hole, the ball bowl of the protective cover extends downwards to be tightly attached to the round hole and sleeved on the outer wall of the upper bearing end of the bridge column type sensor, and the steel ball is arranged in the ball bowl of the protective cover and placed on the upper bearing end.

4. The bridge pillar load cell module of claim 3, wherein: the edge position of the protective cover is provided with a plurality of counter bores which are fixed with the upper surface of the inverted U-shaped piece through screws.

5. Bridge pillar load cell module according to any one of claims 1 to 4, wherein: the U-shaped piece that falls is the stamping forming of an organic whole, and the upper surface of the U-shaped piece that falls is the square plane of horizontally, and the lower extreme of the U-shaped piece that falls is fixed in the left and right sides of bottom plate through welded mode or riveted mode.

6. The bridge pillar load cell module of claim 5, wherein: the left and right sides of the inverted U-shaped piece are of a structure with a wide middle part and narrow upper and lower parts, and weight-reducing hollow parts are arranged on the left and right sides of the inverted U-shaped piece.

7. The utility model provides a bridge column formula weighing sensor module, includes bridge column type sensor, goes up pressure head and bottom plate, its characterized in that: the oval shape of side cut about the lower end shaping that bears of bridge sensor is cut edge about for, the upper surface central point of bottom plate puts the lower end that bears who offers to supply bridge sensor to plant and prevent changeing spacing side cut oval counter bore of side cut about, be fixed with on the bottom plate can carry out 360 degrees oscillating volumes restrictions's the type of falling U piece all around to bridge sensor, the upper surface central point of the type of falling U piece puts the round hole of wearing the upper end of offering the confession bridge sensor, the lower extreme setting of bridge sensor is on the bottom plate, the round hole of the type of falling U piece is passed to bridge sensor's upper end, offset through steel ball and last pressure head, the protection casing of protecting the steel ball is installed in the round hole department of the type of falling U piece.

8. The bridge pillar load cell module of claim 7, wherein: the middle part of bridge column formula sensor is cylindrical, and the upper end of bridge column formula sensor bears the end for the last of undergauge, goes up the upper surface shaping that bears the end for the lower extreme complex concave spherical surface with the steel ball, go up the lower surface of pressure head for the upper surface complex concave spherical surface with the steel ball, go up the upper end round hole that bears the end and pass the type of falling U and put the cooperation with the centre bore cover of silica gel protection casing.

9. The bridge column load cell module of claim 8, wherein: the protective cover is a ball bowl type silica gel protective cover, the protective cover is arranged on the upper surface of the inverted U-shaped piece and around the round hole, the ball bowl of the protective cover extends downwards to be tightly attached to the round hole and sleeved on the outer wall of the upper bearing end of the bridge column type sensor, and the steel ball is arranged in the ball bowl of the protective cover and placed on the upper bearing end.

10. The bridge pillar load cell module of claim 9, wherein: the edge position of the protective cover is provided with a plurality of counter bores which are fixed with the upper surface of the inverted U-shaped piece through screws.

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