CN217331333U - Weighing device for signal acquisition board of shaft pin sensor - Google Patents
Weighing device for signal acquisition board of shaft pin sensor Download PDFInfo
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- CN217331333U CN217331333U CN202220962599.7U CN202220962599U CN217331333U CN 217331333 U CN217331333 U CN 217331333U CN 202220962599 U CN202220962599 U CN 202220962599U CN 217331333 U CN217331333 U CN 217331333U
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- pin sensor
- shaft pin
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- acquisition board
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B50/00—Energy efficient technologies in elevators, escalators and moving walkways, e.g. energy saving or recuperation technologies
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Abstract
The utility model provides a shaft pin sensor signal acquisition board weighing device, which comprises an upper mounting rack, a shaft pin sensor, a lower mounting rack and a weight box; the upper mounting rack and the lower mounting rack are connected through a rotating pin; the rotating pin is a shaft pin sensor; the shaft pin sensor is connected with the signal acquisition board to be detected through a transmission signal wire; the weight box is connected with the lower mounting frame through a hoisting U-shaped lock catch; the weight box is used for placing a balance weight; after the counterweight is placed, under the action of the upper mounting frame and the lower mounting frame, the shaft pin sensor generates current after deformation; the current is transmitted to a signal acquisition board to be tested through a conducting signal wire; by the method, the accurate weighing of the shaft pin sensor signal acquisition board can be realized.
Description
Technical Field
The utility model relates to a signal acquisition board technical field that weighs, in particular to axle pin sensor signal acquisition board weighing device.
Background
In the field of manufacturing of frequency converters of all-in-one machines special for construction elevators, manufacturing enterprises of frequency converters of all-in-one machines special for construction elevators are mostly in the power electronic industry. The production of the construction elevator belongs to the mechanical manufacturing industry, belongs to special equipment, has no related qualification and is not allowed to produce. It is further impossible to purchase a construction hoist exclusively as a dedicated device for detecting the signal acquisition board. Under the restriction of the above conditions, the sampling precision detection of the signal acquisition board of the pin sensor arranged inside the frequency converter of the special all-in-one machine for the construction elevator is a great difficulty and is also a working difficulty for after-sales debugging personnel to detect the frequency converter of the special all-in-one machine for the construction elevator after production.
The frequency converter of the special all-in-one machine for the construction elevator is used as a core control brain of the construction elevator and is responsible for processing the state transmitted by various safety device sensors arranged on a mechanical structure of the construction elevator, and controlling the safe operation of the construction elevator after analysis and judgment.
The shaft pin sensor is used as a core safety device of the construction elevator and is responsible for judging whether the car runs under a normal load state or not and solving the problems of overload and the like. The working principle of the integrated machine is that an extremely low direct current signal is generated through deformation of the shaft pin sensor and is transmitted to the collecting plate inside the special integrated machine frequency converter, the collecting plate transmits the received current signal to the frequency converter control panel and the PLC after current/weight conversion, and the frequency converter can operate on the premise that the frequency converter and the PLC judge the current load safety, so that the weighing function and the accuracy of the shaft pin sensor signal collecting plate are critical.
In view of the fact that the ratio of an extremely low direct current signal generated by deformation of the shaft pin sensor to the load tonnage is large, how to improve the acquisition precision of the signal acquisition board in the special all-in-one machine frequency converter is a design difficulty of the signal acquisition board. Similarly, after the signal acquisition board with high precision is produced, how to test the signal acquisition board is a difficult point in work.
Before the detection device is not provided, a high-precision direct current power supply is used for providing a relatively close direct current for the signal acquisition board all the time to judge whether an acquisition circuit of the signal acquisition board is qualified or not, and the obtained result is approximate weight and cannot judge whether the acquisition precision reaches the standard or not. The basic function of the pin sensor signal acquisition board can only be proved to be normal. In order to obtain accurate weight precision, the sampling resistor of the signal acquisition board is required to be adjusted repeatedly in practical application, so that the standard weight of the weighed weight can be accurately displayed. And the high-precision direct-current power supply is expensive, and after various electromagnetic radiations are received, the stability of the high-precision direct-current power supply is not optimistic, and the error detection phenomenon often occurs because the low current given by the high-precision direct-current power supply is not standard, so that the product quality of the signal acquisition board is unstable. The standard weight of the weighed weight can be accurately displayed by repeatedly adjusting the sampling resistor of the signal acquisition board in practical application. This brings very big hidden danger to the mechanical structure safety of construction elevator, personnel's safety. Also, it brings great challenges to the market.
Therefore, how to set a set of special weighing device for the shaft pin sensor signal acquisition board becomes a key problem of current research.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide an at least part solve above-mentioned technical problem's a pivot sensor signal acquisition board weighing device, can realize accurate weighing to pivot sensor signal acquisition board through this method.
The embodiment of the utility model provides a shaft pin sensor signal acquisition board weighing device, include: the device comprises an upper mounting rack (1), a shaft pin sensor (2), a lower mounting rack (3) and a weight box (6);
the upper mounting rack (1) is connected with the lower mounting rack (3) through a rotating pin; the rotating pin is a shaft pin sensor (2); the shaft pin sensor (2) is connected with a signal acquisition board to be detected through a conduction signal wire (7);
the weight box (6) is connected with the lower mounting frame (3) through a lifting U-shaped lock catch (4);
the weight box (6) is used for placing a weight (5);
after a counterweight is placed, under the action of the upper mounting frame (1) and the lower mounting frame (3), the shaft pin sensor (2) generates current after deformation; the current is transmitted to the signal acquisition board to be tested through the conduction signal wire (7).
Further, the shaft pin sensor (2) is cylindrical;
one end of the cylinder is provided with a wedge-shaped clamping surface (2.5); a first acting surface (2.1), a second acting surface (2.2), a third acting surface (2.3) and a fourth acting surface (2.4) are sequentially arranged on the other cylindrical end and the cylindrical surface at one end provided with the wedge-shaped clamping surface (2.5);
a clamping groove (2.6) is arranged between the wedge-shaped clamping surface (2.5) and the fourth acting surface (2.4);
the first acting surface (2.1), the second acting surface (2.2) and the fourth acting surface (2.4) are concave ring grooves;
the upper mounting frame (1) is in contact with the first acting surface (2.1) and the clamping groove (2.6);
the lower mounting frame (3) is in contact with the third acting surface (2.3) and is mounted with the wedge-shaped clamping surface (2.5) in a matching way;
the second force application surface (2.2) and the fourth force application surface (2.4) are upwards stressed under the action of the force of the upper mounting frame (1) and the lower mounting frame (3); the third force application surface (2.3) is stressed downwards; at the moment, the shaft pin sensor (2) deforms and generates current.
Further, the upper mounting frame (1) comprises a first transverse channel (1.2);
the bottom ends of two sides of the first transverse channel steel (1.2) are symmetrically welded with first fixing lugs (1.3) and first mounting lugs (1.4); the first fixing lug (1.3) is positioned inside the first mounting lug (1.4); the first fixing lug (1.3) and the first mounting lug (1.4) are provided with force applying holes;
the force application hole on the first mounting lug (1.4) is in circumferential contact with the first force application surface (2.1);
the force applying hole on the first fixing lug (1.3) is clamped with the clamping groove (2.6).
Furthermore, the first fixing lug (1.3) and the first mounting lug (1.4) are both vertical to the first transverse channel steel (1.2).
Further, the upper mounting frame (1) further comprises a first hanging boom (1.1);
the first hanging and installing hanger rod (1.1) is welded on the first transverse channel steel (1.2).
Further, the lower mounting (3) comprises a second transverse channel (3.3);
the upper ends of two sides of the second transverse channel steel (3.3) are symmetrically welded with second fixing lugs (3.1) and second mounting lugs (3.2); the second fixing lug (3.1) is positioned inside the second mounting lug (3.2); the second fixing lug (3.1) is provided with a force application hole; the second mounting lug (3.2) is provided with a fixing hole;
the force application holes on the second mounting lugs (3.2) are in circumferential contact with the third force application surfaces (2.3); the fixing hole on the second fixing lug (3.1) is matched and installed with the wedge-shaped clamping surface (2.5).
Furthermore, a hanging lug (3.4) is welded in the middle of the bottom end of the second transverse channel steel (3.3);
a second hanging suspender (6.1) is welded on the weight box (6);
the second hanging and lifting rod (6.1) is connected with the force applying hole on the hanging lug (3.4) through the lifting U-shaped lock catch (4).
Furthermore, the second fixing lug (3.1), the second mounting lug (3.2) and the hanging lug (3.4) are perpendicular to the second transverse channel steel (3.3).
Compared with the prior art, the utility model discloses a shaft pin sensor signal acquisition board weighing device who records has following beneficial effect:
the device is just in contact with a stress surface on the shaft pin sensor through the assembly of the upper mounting structure and the lower mounting structure with three parts of the shaft pin sensor, and applies certain pressure to the shaft pin sensor through the weight box to deform the shaft pin sensor, so that a real low-current signal is output and transmitted to a shaft pin sensor signal acquisition board of a special all-in-one machine frequency converter for a construction elevator. The testing method well simulates the real installation working condition of the shaft pin sensor on the construction elevator, is safe and consistent with the field use environment of the shaft pin sensor, and has real and reliable low-current signal data. In addition, the actual working condition of the shaft pin sensor is well restored in the whole testing process, and the obtained low-current signal is obtained. The sampling precision, the processing quality and the like of the signal acquisition board can be detected well and quickly, and the bad phenomena of wrong detection, missing detection or the like still occurring after the detection are not found through the practical function detection application of the large-batch signal acquisition boards. The detection speed is fast and efficient. The testing device has the advantages of ingenious design, simple processing and low structural cost.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by the practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.
The technical solution of the present invention is further described in detail by the accompanying drawings and examples.
Drawings
The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the principles of the invention. In the drawings:
fig. 1 is the embodiment of the utility model provides a pivot sensor signal acquisition board weighing device schematic structure.
Fig. 2 is a schematic view of an assembly structure of the shaft pin sensor provided by the embodiment of the present invention.
Fig. 3 is a schematic view of the lifting U-shaped lock structure provided by the embodiment of the present invention.
Fig. 4 is a schematic structural view of the counterweight loaded in the weight box body provided by the embodiment of the utility model.
Fig. 5 is a schematic view of a counterweight structure provided by the embodiment of the present invention.
Fig. 6 is a schematic diagram of a structure of a pin sensor and a conductive signal line according to an embodiment of the present invention.
Fig. 7 is a schematic view of an upper mounting frame structure provided in an embodiment of the present invention.
Fig. 8 is a schematic view of a structure of a lower mounting frame provided by an embodiment of the present invention.
Fig. 9 is a schematic structural view of the weight box provided by the embodiment of the present invention.
In the drawings, 1-upper mounting frame; 1.1-a first hanging boom; 1.2-a first transverse channel; 1.3-first fixing lug; 1.4-a first mounting ear; 2-axle pin sensor; 2.1-first acting surface; 2.2-second force application surface; 2.3-the third acting surface; 2.4-fourth force-exerting surface; 2.5-wedge clamping surface; 2.6-card slot; 3-a lower mounting frame; 3.1-second fixing ear; 3.2-a second mounting ear; 3.3-a first transverse steel channel; 3.4-hanging ears; 4-lifting U-shaped lock catches; 5-counterweight; 6-weight box; 6.1-a second hanging boom; 7-conductive signal lines.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative efforts belong to the scope of the present invention.
Referring to fig. 1, an embodiment of the present invention provides a weighing device for a shaft pin sensor signal acquisition board, which includes an upper mounting frame 1, a shaft pin sensor 2, a lower mounting frame 3, and a weight box 6; wherein, the upper mounting frame 1 and the lower mounting frame 3 are connected through a rotating pin, and the specific connection structure can be seen in fig. 2; the rotating pin is a shaft pin sensor 2; the shaft pin sensor 2 is connected with a signal acquisition board to be detected through a conducting signal wire 7; the weight box 6 is connected with the lower mounting frame 3 through a lifting U-shaped lock catch 4, wherein the lifting U-shaped lock catch 4 is shown in figure 3; a counterweight 5 is arranged in the counterweight box 6, and is specifically shown in figure 4; the weight of a single counterweight is 20Kg, and the counterweight can be placed in the counterweight box according to the test requirement to carry out the weighing test. Wherein the structure diagram of the counterweight is shown in figure 5; after the counterweight is placed, under the action of the upper mounting frame 1 and the lower mounting frame 3, the shaft pin sensor 2 generates low current after deformation; the low current is transmitted to the signal acquisition board to be measured through the conductive signal line 7.
The shaft pin sensor 2 will be specifically described below.
In the prior art, the shaft pin sensor is actually a hollow section round shaft bearing a shearing force, the double-shear type resistance strain gauges are adhered to the center position of a groove in a central hole, and two bridge combination measurement modes are provided, namely, the double-shear type resistance strain gauges at two grooves jointly form a Wheatstone bridge or respectively form the Wheatstone bridges and then are connected in parallel for measurement.
Referring to fig. 6, in the embodiment of the present invention, the shaft pin sensor 2 is cylindrical; one end of the cylinder is provided with a wedge-shaped clamping surface 2.5; a first acting surface 2.1, a second acting surface 2.2, a third acting surface 2.3 and a fourth acting surface 2.4 are sequentially arranged on the other end of the cylinder and the cylindrical surface at one end provided with the wedge-shaped clamping surface 2.5; a clamping groove 2.6 is arranged between the wedge-shaped clamping surface 2.5 and the fourth acting surface 2.4; wherein, the first acting surface 2.1, the second acting surface 2.2 and the fourth acting surface 2.4 are concave ring grooves; the upper mounting frame 1 is contacted with the first acting surface 2.1 and the clamping groove 2.6; the lower mounting frame 3 is contacted with the third acting surface 2.3 and is matched and mounted with the wedge-shaped clamping surface 2.5;
the upper mounting rack 1 is hung on a lifting hook of a crane, the shaft pin sensor 2 penetrates through a combined body formed by the upper mounting rack 1 and the lower mounting rack 3, and the second acting surface 2.2 and the fourth acting surface 2.4 on the shaft pin sensor 2 are forced upwards by the gravity of the weight box; the third force application surface 2.3 is stressed downwards; at the moment, the shaft pin sensor 2 deforms and generates low current; the low current is transmitted to a signal acquisition board inside the special all-in-one machine frequency converter through a conducting signal wire 7. In the concrete use, the signal acquisition board transmits the received current signal to the frequency converter control panel and the PLC after current/weight conversion, and the frequency converter can operate on the premise that the current load is judged to be safe through the frequency converter and the PLC.
The upper mount 1 will be described in detail below.
Referring to fig. 7, in the embodiment of the present invention, the upper mounting bracket 1 includes a first hanging boom 1.1 and a first transverse channel steel 1.2; the first hanging and installing hanger rod 1.1 is welded on the first transverse channel steel 1.2 and is used for supporting the weight of the whole device; the bottom ends of two sides of the first transverse channel steel 1.2 are symmetrically welded with first fixing lugs 1.3 and first mounting lugs 1.4, so that the left side and the right side are balanced; the first fixing lug 1.3 is positioned inside the first mounting lug 1.4; the first fixing lug 1.3 and the first mounting lug 1.4 are provided with round force applying holes; the circular force applying hole on the first mounting lug 1.4 is in circumferential contact with the first force applying surface 2.1; the round force applying hole on the first fixing lug 1.3 is clamped with the clamping groove 2.6. Wherein, first fixed ear 1.3 and first installation ear 1.4 are the vertical state with first horizontal channel-section steel 1.2.
The lower mount 3 will be described in detail below.
Referring to fig. 8, in the embodiment of the present invention, the lower mounting bracket 3 includes a second transverse channel 3.3; the upper ends of two sides of the second transverse channel steel 3.3 are symmetrically welded with second fixing lugs 3.1 and second mounting lugs 3.2, so that balance of the left side and the right side is ensured. (ii) a The second fixing lug 3.1 is positioned at the inner side of the second mounting lug 3.2; the second fixing lug 3.1 is provided with a round force applying hole; the second mounting lug 3.2 is provided with a long waist round fixing hole; the circular force applying hole on the second mounting lug 3.2 is in circumferential contact with the third force applying surface 2.3; the long waist-round fixing hole on the second fixing lug 3.1 is tightly matched and installed with the wedge-shaped clamping surface 2.5, so that the shaft pin sensor (2) is prevented from rotating. A hanging lug 3.4 is welded in the middle of the bottom end of the second transverse channel steel 3.3; a second hanging boom 6.1 is welded on the weight box 6, see fig. 9 specifically; the second hanging and loading hanger rod 6.1 is connected with the force application hole on the hanger 3.4 through the lifting U-shaped lock catch 4. The second fixing lug 3.1, the second mounting lug 3.2 and the hanging lug 3.4 are all vertical to the second transverse channel steel 3.3.
Although the present invention has been described with reference to the preferred embodiments, it is not intended to limit the present invention, and various changes and modifications can be made by those skilled in the art without departing from the spirit and scope of the present invention.
Claims (8)
1. The utility model provides a shaft pin sensor signal acquisition board weighing device which characterized in that includes: the device comprises an upper mounting rack (1), a shaft pin sensor (2), a lower mounting rack (3) and a weight box (6);
the upper mounting rack (1) is connected with the lower mounting rack (3) through a rotating pin; the rotating pin is a shaft pin sensor (2); the shaft pin sensor (2) is connected with a signal acquisition board to be detected through a conducting signal wire (7);
the weight box (6) is connected with the lower mounting frame (3) through a lifting U-shaped lock catch (4);
the weight box (6) is used for placing a weight (5);
after a counterweight is placed, under the action of the upper mounting frame (1) and the lower mounting frame (3), the shaft pin sensor (2) generates current after deformation; the current is transmitted to the signal acquisition board to be tested through the conduction signal wire (7).
2. The axle pin sensor signal acquisition board weighing device of claim 1, wherein the axle pin sensor (2) is cylindrical;
one end of the cylinder is provided with a wedge-shaped clamping surface (2.5); a first acting surface (2.1), a second acting surface (2.2), a third acting surface (2.3) and a fourth acting surface (2.4) are sequentially arranged on the other cylindrical end and the cylindrical surface at one end provided with the wedge-shaped clamping surface (2.5);
a clamping groove (2.6) is arranged between the wedge-shaped clamping surface (2.5) and the fourth acting surface (2.4);
the first acting surface (2.1), the second acting surface (2.2) and the fourth acting surface (2.4) are concave ring grooves;
the upper mounting frame (1) is in contact with the first acting surface (2.1) and the clamping groove (2.6);
the lower mounting frame (3) is in contact with the third acting surface (2.3) and is mounted with the wedge-shaped clamping surface (2.5) in a matching way;
under the action of the force of the upper mounting frame (1) and the lower mounting frame (3), the second force application surface (2.2) and the fourth force application surface (2.4) are stressed upwards; the third force application surface (2.3) is stressed downwards; at the moment, the shaft pin sensor (2) deforms and generates current.
3. The shaft pin sensor signal acquisition board weighing device of claim 2, wherein said upper mounting bracket (1) comprises a first transverse channel (1.2);
the bottom ends of two sides of the first transverse channel steel (1.2) are symmetrically welded with first fixing lugs (1.3) and first mounting lugs (1.4); the first fixing lug (1.3) is positioned inside the first mounting lug (1.4); the first fixing lug (1.3) and the first mounting lug (1.4) are provided with force applying holes;
the force application hole on the first mounting lug (1.4) is in circumferential contact with the first force application surface (2.1);
the force applying hole on the first fixing lug (1.3) is clamped with the clamping groove (2.6).
4. The axle pin sensor signal acquisition board weighing device of claim 3, characterized in that, the first fixed ear (1.3) and the first mounting ear (1.4) are both perpendicular to the first transverse channel (1.2).
5. The shaft pin sensor signal acquisition board weighing device of claim 3, wherein said upper mounting bracket (1) further comprises a first hanging boom (1.1);
the first hanging and installing hanger rod (1.1) is welded on the first transverse channel steel (1.2).
6. The weighing device according to claim 2, wherein said lower mounting frame (3) comprises a second transverse channel (3.3);
the upper ends of two sides of the second transverse channel steel (3.3) are symmetrically welded with second fixing lugs (3.1) and second mounting lugs (3.2); the second fixing lug (3.1) is positioned inside the second mounting lug (3.2); the second fixing lug (3.1) is provided with a force application hole; the second mounting lug (3.2) is provided with a fixing hole;
the force application holes on the second mounting lugs (3.2) are in circumferential contact with the third force application surfaces (2.3); the fixing hole on the second fixing lug (3.1) is matched and installed with the wedge-shaped clamping surface (2.5).
7. The weighing device with the shaft pin sensor signal acquisition board as claimed in claim 6, wherein a hanger (3.4) is welded in the middle of the bottom end of the second transverse channel steel (3.3);
a second hanging suspender (6.1) is welded on the weight box (6);
the second hanging and loading hanging rod (6.1) is connected with the force application hole on the hanging lug (3.4) through the lifting U-shaped lock catch (4).
8. The axle pin sensor signal acquisition board weighing device of claim 7, characterized in that the second fixing lug (3.1), the second mounting lug (3.2) and the suspension lug (3.4) are all perpendicular to the second transverse channel steel (3.3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220962599.7U CN217331333U (en) | 2022-04-19 | 2022-04-19 | Weighing device for signal acquisition board of shaft pin sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220962599.7U CN217331333U (en) | 2022-04-19 | 2022-04-19 | Weighing device for signal acquisition board of shaft pin sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217331333U true CN217331333U (en) | 2022-08-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220962599.7U Active CN217331333U (en) | 2022-04-19 | 2022-04-19 | Weighing device for signal acquisition board of shaft pin sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217331333U (en) |
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- 2022-04-19 CN CN202220962599.7U patent/CN217331333U/en active Active
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