CN213397294U

CN213397294U - Bridge type sensor and scale body

Info

Publication number: CN213397294U
Application number: CN202022783839.0U
Authority: CN
Inventors: 伍德常; 龙福密; 阳文; 朱方友
Original assignee: Guangdong South China Sea Electronic Measuring Technology Co ltd
Current assignee: Guangdong South China Sea Electronic Measuring Technology Co ltd
Priority date: 2020-11-25
Filing date: 2020-11-25
Publication date: 2021-06-08
Anticipated expiration: 2030-11-25

Abstract

The utility model belongs to the technical field of the sensor technique and specifically relates to indicate a bridge type sensor and balance body, including elastomer, floorbar and base, be provided with the foil gage in the elastomer, the elastomer with be provided with the articulamentum between the floorbar, the articulamentum is with elastomer and floorbar fixed connection, the base is fixed in the floorbar is kept away from the one end of elastomer, the swing subassembly has been installed at the top of elastomer, the swing subassembly is used for contradicting with outside balance body, the elastomer facial make-up is equipped with the signal subassembly that is used for with outside measuring instrument signal connection. The utility model provides a pair of bridge type sensor, effective reduction in production cost to the connection process of elastomer and floorbar becomes simpler, and the setting up of articulamentum also can make the atress of elastomer more even, effectively improves bridge type sensor's detection precision.

Description

Bridge type sensor and scale body

Technical Field

The utility model belongs to the technical field of the sensor technique and specifically relates to indicate a bridge type sensor and balance body.

Background

The typical traditional bridge type sensor on the market is used for the weighbridge for more than 30 years, the structure, the process and the signal connection mode of the sensor are not changed all the time, and the sensor has the greatest advantages of simple and convenient installation and use and fewer installation conditions, and is a large-tonnage sensor which is the widest application range in the market of the weighbridge in China. The traditional large bridge type sensor elastomer is connected with the base through a large bolt in a fastening mode, and the bridge type sensor with the structure has the biggest defects that the accuracy and the precision of the sensor are too large, the stability is not ideal, the installation and maintenance cost is high, and the accuracy of the scale body is low and unstable.

Disclosure of Invention

The utility model discloses problem to prior art provides a bridge type sensor and balance body, through articulamentum with elastomer and floorbar fixed connection, has reduced the application of screw to reduce the trompil technology of screw hole, effective reduction in production cost, and the connection process of elastomer and floorbar becomes simpler, and the setting up of articulamentum also can make the atress of elastomer more even, effectively improves bridge type sensor's detection precision.

In order to solve the technical problem, the utility model discloses a following technical scheme: including elastomer, floorbar and base, be provided with the foil gage in the elastomer, the elastomer with be provided with the articulamentum between the floorbar, the articulamentum is with elastomer and floorbar fixed connection, the base is fixed in the floorbar is kept away from the one end of elastomer, the swing subassembly has been installed at the top of elastomer, the swing subassembly is used for contradicting with outside balance body, the elastomer facial make-up is equipped with the signal subassembly that is used for with outside measuring instrument signal connection, the signal subassembly with foil gage signal connection.

Preferably, the elastic body and the bottom beam are fixedly connected through welding, and the connecting layer is a soldering tin layer.

Preferably, a plurality of patch holes are formed in the elastic body, and a plurality of cover plates used for respectively sealing the patch holes are arranged on the elastic body.

Preferably, the signal assembly comprises at least one socket for signal connection with the strain gauge and an external measuring instrument; at least one the jack has been seted up to the apron, the protruding fixed column that is equipped with of socket, the protruding snap ring that is equipped with in periphery of socket, the fixed column wears to establish behind the jack the snap ring is contradicted with the apron, the one end that the fixed column was kept away from to the socket sets up outside the paster hole.

Preferably, the signal assembly comprises a connecting hole formed in the side surface of the elastic body and a socket assembled in the connecting hole, and the socket is used for signal connection with an external measuring instrument and signal connection with the strain gauge.

Preferably, the base and the bottom beam are fixedly connected through welding.

Preferably, the base comprises a first expansion part, a bottom plate and a second expansion part which are sequentially connected, the bottom plate is fixed under the bottom beam, and the first expansion part and the second expansion part are respectively positioned on two sides of the bottom beam; first extension portion with the welding has first reinforcing plate between the side of floorbar, second extension portion with the welding has the second reinforcing plate between the side of floorbar.

Preferably, the swing assembly comprises a steel ball and a steel ball seat, the steel ball seat is fixed on the top of the elastic body through a screw, the steel ball is assembled on the steel ball seat, and the steel ball can roll in the steel ball seat.

The utility model provides a scale body, includes weighing platform and detecting instrument, still includes a plurality of bridge type sensors, the bridge type sensor assembles in the bottom of weighing platform, the bottom of weighing platform is provided with a plurality of connecting wires, the signal subassembly of sensor passes through the connecting wire with detecting instrument signal connection.

Preferably, the plurality of connecting wires comprise main wires and a plurality of branch wires, the plurality of branch wires are electrically connected with the main wires, one of the plurality of branch wires is electrically connected with the detection instrument, the adjacent main wires are electrically connected, one end of each branch wire, which is far away from the main wires, is provided with a waterproof plug, and the branch wires are electrically connected with the signal components of the bridge sensor through the waterproof plugs.

The utility model has the advantages that:

the utility model provides a pair of bridge type sensor through articulamentum with elastomer and floorbar fixed connection, has reduced the application of screw and has reduced the trompil technology of screw hole, effective reduction in production cost to the connection process of elastomer and floorbar becomes simpler, and the setting of articulamentum also can be so that the atress of elastomer is more even, effectively improves bridge type sensor's detection precision.

Drawings

Fig. 1 is a schematic structural diagram of a bridge sensor according to a first embodiment of the present invention.

Fig. 2 is an exploded schematic view of a bridge sensor according to a first embodiment of the present invention.

Fig. 3 is a schematic structural diagram of a scale body according to a first embodiment of the present invention.

Fig. 4 is a schematic structural diagram of a bridge sensor according to a second embodiment of the present invention.

Fig. 5 is an exploded schematic view of a bridge sensor according to a second embodiment of the present invention.

Fig. 6 is a schematic structural diagram of a scale body according to a second embodiment of the present invention.

Fig. 7 is an enlarged view of a portion a in fig. 6.

The reference numerals in fig. 1 to 7 include:

1-elastomer, 2-bottom beam, 3-base, 4-connecting layer, 5-patch hole, 6-socket, 7-cover plate, 8-jack, 9-fixed column, 10-snap ring, 11-first expansion part, 12-bottom plate, 13-second expansion part, 14-first reinforcing plate, 15-second reinforcing plate, 16-steel ball, 17-steel ball seat, 18-weighing platform, 19-detection instrument, 20-main line, 21-branch line, 22-waterproof plug, 23-gap, 24-protective strip, 25-connecting hole, 26-plug and 27-waterproof thread.

Detailed Description

In order to facilitate understanding of those skilled in the art, the present invention will be further described with reference to the following examples and drawings, which are not intended to limit the present invention. The present invention will be described in detail with reference to the accompanying drawings.

The first embodiment is as follows:

the bridge sensor provided by the embodiment, as shown in fig. 1 and fig. 2, includes an elastic body 1, a bottom beam 2 and a base 3, a strain gauge (not shown in the drawings) is provided in the elastic body 1, a connection layer 4 is provided between the elastic body 1 and the bottom beam 2, the elastic body 1 and the bottom beam 2 are fixedly connected by the connection layer 4, the base 3 is fixed to one end of the bottom beam 2 away from the elastic body 1, a swing assembly is installed at the top of the elastic body 1, the swing assembly is used for abutting against an external scale body, a signal assembly for signal connection with an external measuring instrument is installed on the elastic body 1, and the signal assembly is in signal connection with the strain gauge. The strain gauge is used for sensing the deformation of the elastic element 1 and converting the deformation into data which is transmitted to an external detection instrument 19 by a signal component for reference and understanding of workers.

In particular, in the prior art, most of the elastic bodies 1 and the bottom beams 2 are connected together by using screws or bolts, and in this way, screw holes need to be formed in the elastic bodies 1 and the bottom beams 2, and the screws or bolts are equipped, so that the cost is high, the production process steps are multiple, and the assembly is troublesome. In this embodiment, the use of screw has been abandoned, and direct through articulamentum 4 with elastomer 1 and floorbar 2 fixed connection, the application that has reduced the screw and the trompil technology that reduces the screw hole to stress during the assembly is better simpler than the bolt-up, thereby effective reduction in production cost, articulamentum 4 set up also can make elastomer 1's atress more even, effectively improves bridge sensor's detection precision.

As shown in fig. 2, the connection layer 4 in this embodiment may adopt a solder layer, that is, the elastic body 1 and the bottom beam 2 are welded together, and the welding process is simple, so that the troublesome production process of setting screws can be avoided, as shown in fig. 2, two ends of the elastic body 1 and two corresponding ends of the bottom beam 2 are respectively welded together, the welding of the two ends is simpler relative to the middle, and due to the existence of the solder layer, a certain gap 23 may exist between the elastic body 1 and the bottom beam 2, so that a protection strip 24 is disposed at the opening of the gap 23, and the gap 23 is sealed, so that the influence of other impurities on the elastic body 1 and the bottom beam 2 can be blocked, and the detection accuracy of the bridge sensor of this embodiment is prevented from being reduced.

In the bridge sensor provided in this embodiment, as shown in fig. 1 and fig. 2, a plurality of patch holes 5 are formed in the elastic body 1, and a plurality of cover plates 7 for respectively sealing the patch holes 5 are installed on the elastic body 1. Specifically, the patch hole 5 is provided with a strain gauge therein, and the patch hole 5 is sealed by the cover plate 7 to protect the strain gauge.

In the bridge sensor provided by the embodiment, as shown in fig. 1 and fig. 2, the signal assembly includes at least one socket 6, and the socket 6 is used for signal connection with the strain gauge and an external measuring instrument 19; at least one jack 8 has been seted up to apron 7, 6 protruding fixed columns 9 that are equipped with of socket, the protruding snap ring 10 that is equipped with in periphery of socket 6, fixed column 9 wears to establish behind the jack 8 snap ring 10 contradicts with apron 7, the one end that fixed column 9 was kept away from to socket 6 sets up outside paster hole 5.

Specifically, the apron 7 of this embodiment can directly be stopped in the drill way department of paster hole 5, like interference fit's mode, alright in order to fix apron 7, wear to establish the jack 8 of apron 7 with the fixed column 9 of socket 6 after that, fixed column 9 also can adopt interference fit's mode with jack 8 to fix, therefore, the signal subassembly simple structure of this embodiment, the equipment operation is also convenient, and the practicality is high. The socket 6 is arranged, so that an external electric wire and the like can be directly inserted into the socket 6, or a corresponding plug is arranged on the corresponding electric wire, and when the socket is used, the plug can be directly inserted into the socket 6, so that the problems of high cost, troublesome operation and the like caused by the traditional perforated lead wire are avoided.

In the bridge sensor provided by the embodiment, as shown in fig. 1 and fig. 2, the base 3 and the bottom beam 2 are fixedly connected by welding. Specifically, the base 3 and the bottom beam 2 are fixed by welding, so that the number of screws used can be further reduced, the production cost can be further reduced, and the sensor of the embodiment can be assembled more conveniently.

In the bridge sensor provided in this embodiment, as shown in fig. 1 and fig. 2, the base 3 includes a first extension portion 11, a bottom plate 12 and a second extension portion 13, which are connected in sequence, the bottom plate 12 is fixed right below the bottom beam 2, and the first extension portion 11 and the second extension portion 13 are respectively located at two sides of the bottom beam 2.

Specifically, the first extension portion 11 and the second extension portion 13 are extended and disposed on two sides of the bottom plate 12, so that the force-bearing area of the base 3 can be increased, and the nonlinearity and the measurement delay precision of the sensor of the present embodiment are improved.

In the bridge sensor provided by the present embodiment, as shown in fig. 1 and fig. 2, a first reinforcing plate 14 is welded between the first expansion portion 11 and the side surface of the bottom beam 2, and a second reinforcing plate 15 is welded between the second expansion portion 13 and the side surface of the bottom beam 2.

Specifically, the connection stability between the bottom beam 2 and the first and

second expansions

11 and 13 is further reinforced by the first and second reinforcing

plates

14 and 15.

In the bridge sensor provided by the present embodiment, as shown in fig. 1 and fig. 2, the swinging component includes a steel ball 16 and a steel ball seat 17, the steel ball seat 17 is fixed on the top of the elastic body 1 by a screw, the steel ball 16 is assembled on the steel ball seat 17, and the steel ball 16 can roll in the steel ball seat 17.

Specifically, the steel ball 16 of the present embodiment is preferably a diameter 50 type steel ball 16, which can effectively reduce the cost compared to the steel ball 16 of diameter 76 in the prior art.

The scale body provided by this embodiment, as shown in fig. 3, includes a weighing platform 18 and a detecting instrument 19, the bridge sensor in this embodiment is assembled at the bottom of the weighing platform 18, the bottom of the weighing platform 18 is provided with a plurality of connecting wires, and the signal component of the sensor is connected with the detecting instrument 19 through the connecting wires.

The plurality of connecting wires comprise main wires 20 and a plurality of branch wires 21, the plurality of branch wires 21 are electrically connected with the main wires 20, one of the plurality of branch wires 21 is electrically connected with the detecting instrument 19, the adjacent main wires 20 are electrically connected, one end of each branch wire 21, which is far away from the main wires 20, is provided with a waterproof plug-in unit 22, and the branch wires 21 are electrically connected with the signal components of the bridge sensor through the waterproof plug-in units 22.

Specifically, each group of connecting lines is equipped with a bridge sensor of the present embodiment, the main line 20 of the connecting line is electrically connected to the sensor, and the main line 20 is further electrically connected to a plurality of branch lines 21, so that only one of the branch lines 21 is selected to be electrically connected to the detecting instrument 19 according to the actual requirement and according to the position of the detecting instrument 19, the detection data of the improved bridge sensor of the present embodiment can be transmitted to the detecting instrument 19 for checking, and the structure is favorable for actual maintenance. In addition, the branch line 21 is provided with the waterproof plug-in 22, the waterproof plug-in 22 is electrically connected with the socket 6 of the embodiment, so that the electric connection between the sensor and the detection instrument 19 is realized, the waterproof plug-in 22 can effectively prevent the socket 6 or the branch line 21 of the embodiment from being affected with damp to cause the damage of the sensor, and the connection mode of the plug-in and the socket 6 can be a screwing structure similar to a thread, so that the actual connection operation is facilitated, and the overhaul is also facilitated. Furthermore, the main line 20 and the branch line 21 can be integrated by injection molding, so that water can be effectively prevented.

Example two:

the present embodiment is different from the first embodiment in that the socket 6 is disposed at a different position in the first embodiment, as shown in fig. 4, 5 and 6, the socket 6 of the first embodiment is disposed in the patch hole 5, and the second embodiment has the following structure: a connecting hole 25 is formed in the side surface of the elastic body 1, the socket 6 is arranged in the connecting hole 25, the socket 6 is electrically connected with the strain gauge, the connecting end of the socket 6 and the external measuring instrument 19 is exposed at the hole opening of the connecting hole 25, and the hole wall of the connecting hole 25 is provided with threads (not shown in the drawing). In the scale body of the embodiment, the branch line 21 is configured as the connection structure shown in fig. 7, the waterproof plug 22 disposed at one end of the branch line 21 connected with the socket 6 is configured as the plug 26 with the waterproof thread 27, the plug 26 with the waterproof thread 27 is the prior art, and after the plug 26 is connected with the socket 6, the waterproof thread 27 is screwed with the thread of the connection hole 25, so as to achieve the waterproof effect. The socket of the second embodiment and the connection structure of the waterproof plug-in can realize the waterproof effect, and meanwhile, the socket used can be a socket with lower cost on the market, so long as the socket can be electrically connected with the strain gauge, the operability is stronger, the socket is more suitable for practical production application, holes do not need to be formed in the cover plate, and therefore the practical production cost is lower.

The above description is only for the preferred embodiment of the present invention, and the present invention is not limited to the above description, and although the present invention is disclosed in the preferred embodiment, it is not limited to the above description, and any person skilled in the art can make some changes or modifications to equivalent embodiments without departing from the scope of the present invention, but all the technical solutions of the present invention are within the scope of the present invention.

Claims

1. The utility model provides a bridge type sensor, includes elastomer, floorbar and base, be provided with foil gage in the elastomer, its characterized in that: the elastic body with be provided with the articulamentum between the floorbar, the articulamentum is with floorbar fixed connection, the base is fixed in the floorbar is kept away from the one end of elastic body, the swing subassembly has been installed at the top of elastic body, the swing subassembly is used for contradicting with outside balance body, the elastic body facial make-up is equipped with the signal subassembly that is used for with outside measuring instrument signal connection, the signal subassembly with foil gage signal connection.

2. A bridge sensor according to claim 1, wherein: the elastic body and the bottom beam are fixedly connected through welding, and the connecting layer is a soldering tin layer.

3. A bridge sensor according to claim 1, wherein: the elastic body is provided with a plurality of patch holes, and the elastic body is provided with a plurality of cover plates for respectively sealing the patch holes.

4. A bridge sensor according to claim 3, wherein: the signal assembly comprises at least one socket which is used for signal connection with the strain gauge and an external measuring instrument; at least one the jack has been seted up to the apron, the protruding fixed column that is equipped with of socket, the protruding snap ring that is equipped with in periphery of socket, the fixed column wears to establish behind the jack the snap ring is contradicted with the apron, the one end that the fixed column was kept away from to the socket sets up outside the paster hole.

5. A bridge sensor according to claim 1, wherein: the signal assembly comprises a connecting hole formed in the side face of the elastic body and a socket assembled in the connecting hole, and the socket is used for being connected with an external measuring instrument signal and being connected with the strain gauge signal.

6. A bridge sensor according to claim 1, wherein: the base and the bottom beam are fixedly connected through welding.

7. A bridge sensor according to claim 6, wherein: the base comprises a first expansion part, a bottom plate and a second expansion part which are sequentially connected, the bottom plate is fixed under the bottom beam, and the first expansion part and the second expansion part are respectively positioned on two sides of the bottom beam; first extension portion with the welding has first reinforcing plate between the side of floorbar, second extension portion with the welding has the second reinforcing plate between the side of floorbar.

8. A bridge sensor according to claim 1, wherein: the swing assembly comprises a steel ball and a steel ball seat, the steel ball seat is fixed on the top of the elastic body through a screw, the steel ball is assembled on the steel ball seat, and the steel ball can roll in the steel ball seat.

9. The utility model provides a scale body, includes weighing platform and detecting instrument, its characterized in that: the bridge type sensor of any one of claims 1 to 8 is further included, the bridge type sensor is assembled at the bottom of a weighing platform, a plurality of connecting wires are arranged at the bottom of the weighing platform, and a signal component of the sensor is in signal connection with the detection instrument through the connecting wires.

10. A scale body according to claim 9, wherein: the plurality of connecting wires comprise main wires and a plurality of branch wires, the plurality of branch wires are electrically connected with the main wires, one of the plurality of branch wires is electrically connected with the detection instrument, the adjacent main wires are electrically connected, one end of each branch wire, far away from the main wires, is provided with a waterproof plug-in, and the branch wires are electrically connected with the signal components of the bridge sensor through the waterproof plug-in.