Tension sensor testing device

Abstract

The utility model belongs to the technical field of tension sensor testing equipment, and particularly discloses a tension sensor testing device. The tension sensor testing device comprises a base, a pressure plate, a tension sensor, a long shaft, a short shaft and a standard dynamometer. The tension sensor testing device is of a wrapping type mechanical structure, the second cylinder body of the pressure plate is sleeved with the first cylinder body cavity of the base, the tension sensor is sleeved with the second cylinder body cavity, and the situation that in the existing testing process, a test piece is exposed outside, and the accuracy of data is affected is avoided. Besides, the long shaft penetrates through the first clamping groove, the sliding groove and the upper hole, the long shaft is in lap joint with the first clamping groove, the short shaft penetrates through the second clamping groove and the lower hole, when positive pressure is applied to the pressing disc, the testing device converts the pressure into tension on the tension sensor, and the situation that data accuracy is affected by elastic deformation generated by steel wire rope connection is avoided; and meanwhile, related safety accidents are effectively avoided.

Description

Technical Field

[0001] The utility model belongs to the technical field of tension sensor testing equipment and relates to a tension sensor testing device. Background Art

[0002] A tension sensor is a device that converts physical signals into measurable electrical signals and outputs them. It is used to measure tension values. Plate-ring tension sensors are a branch of the tension sensor category. They use a plate-ring structure and arc-section ring connection. They are easy to install and have excellent sealing properties. They are widely used in various electronic truck scales, track scales, platform scales, hopper scales, belt conveyor tensioning devices, and other occasions for force measurement and weighing.

[0003] In order to verify the accuracy of the force measurement value of the tension sensor, a test device is required to perform numerical calibration and factory inspection on the tension sensor. At present, most of the tension sensor test devices on the market have the following problems: First, the tension sensor test device is generally expensive, complicated to operate, and inconvenient to install; second, the tension sensor test device usually fixes the tension sensor, connects one end of the wire rope to the tension sensor, and then applies tension to the other end of the wire rope to detect the tension sensor. During the test, the tension sensor is exposed to the outside or connected with a wire rope to produce elastic deformation, which affects the accuracy of the data and is prone to safety accidents.

[0004] Based on this, there is an urgent need to propose a new type of tension sensor testing device to solve the above technical problems existing in the prior art. Utility Model Content

[0005] The utility model aims to provide a tension sensor testing device to prevent the tension sensor from being exposed to the outside or being connected with a steel wire rope to generate elastic deformation that affects the accuracy of data during the test.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A tension sensor testing device comprises a base, a pressure plate, a tension sensor, a major axis, a minor axis and a standard dynamometer;

[0008] The base is composed of a first cylinder and a bottom plate, which are arranged and connected in sequence from top to bottom; wherein a first slot is arranged at the upper end of the first cylinder;

[0009] The pressure plate is composed of a pressure head and a second cylinder, which are arranged and connected in sequence from top to bottom; wherein the second cylinder is provided with a sliding groove and a second clamping groove in sequence from top to bottom along the length direction;

[0010] The second cylinder is sleeved in the cavity of the first cylinder;

[0011] The tension sensor is a plate-ring structure, with upper holes and lower holes at both ends of the tension sensor, and a cable connector at one side of the tension sensor;

[0012] The tension sensor is sleeved in the cavity of the second cylinder;

[0013] The long shaft passes through the first clamping slot, the sliding slot and the upper hole, and the long shaft overlaps the first clamping slot;

[0014] The short shaft passes through the second slot and the lower hole;

[0015] The standard dynamometer is set in the pressure head;

[0016] The tension sensor and the standard dynamometer are respectively connected with display instruments via signal cables.

[0017] Preferably, a first avoidance groove is provided along the length direction from the bottom on one side of the second cylinder close to the cable connector of the tension sensor.

[0018] Preferably, the first cylinder is provided with a second avoidance groove cooperating with the first avoidance groove from the top along the length direction.

[0019] Preferably, there are two first card slots, and the two first card slots are arranged opposite to each other at the top of the first cylinder.

[0020] Preferably, there are two second card slots, and the two second card slots are arranged opposite to each other at the bottom of the second cylinder.

[0021] Preferably, there are two sliding grooves, which are arranged opposite to each other above the second card slot.

[0022] Preferably, the bottom plate is a cylindrical structure, and the diameter of the bottom plate is larger than the outer diameter of the first cylinder.

[0023] Preferably, the outer diameter of the pressure head is larger than the outer diameter of the second cylinder.

[0024] Preferably, the long axis is composed of a first column segment and a second column segment; wherein there are two first column segments, the two first column segments are arranged opposite to each other on both sides of the second column segment along the length direction, and the diameter of the first column segment is smaller than the diameter of the second column segment;

[0025] The length of the second column section is equal to the outer diameter of the first cylinder, and the diameter of the second column section is smaller than the diameter of the upper hole.

[0026] Preferably, the short axis is a columnar structure, and the diameter of the short axis is smaller than the diameter of the lower hole.

[0027] Compared with the prior art, the utility model has the following beneficial effects:

[0028] As described above, the utility model relates to a tension sensor test device, which is a wrapped mechanical structure. The second cylinder of the pressure plate is sleeved in the first cylinder cavity of the base, and the tension sensor is sleeved in the second cylinder cavity, which avoids the test piece being exposed to the outside and affecting the accuracy of the data during the existing test. In addition, the long axis passes through the first slot, the sliding slot and the upper hole, the long axis overlaps the first slot, and the short axis passes through the second slot and the lower hole. When positive pressure is applied to the pressure plate, the test device converts the pressure into a pulling force on the tension sensor, which avoids the elastic deformation caused by the use of a wire rope connection to affect the accuracy of the data, and also effectively avoids the occurrence of related safety accidents. In addition, the tension sensor test device is easy to install and convenient to test and operate. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art are briefly introduced below.

[0030] Figure 1 This is a structural schematic diagram of a tension sensor testing device in an embodiment of the utility model;

[0031] Figure 2 For along Figure 1 Sectional view along line AA;

[0032] Figure 3 This is a schematic diagram of the structure of the base in the embodiment of the utility model;

[0033] Figure 4 This is a front view of the base in the embodiment of the utility model;

[0034] Figure 5 A side view of the base in the embodiment of the utility model;

[0035] Figure 6 A top view of the base in the embodiment of the utility model;

[0036] Figure 7 This is a front view of the pressure plate in the embodiment of the utility model;

[0037] Figure 8 It is a side view of the pressure plate in the embodiment of the utility model;

[0038] Fig. 9 A bottom view of the pressure plate in the embodiment of the utility model;

[0039] Fig.10 For along Fig. 9 Sectional view along the midline BB;

[0040] Fig.11 This is a front view of a tension sensor in an embodiment of the utility model;

[0041] Fig.12 It is a side view of the tension sensor in the embodiment of the utility model;

[0042] Fig.13 A top view of a tension sensor in an embodiment of the utility model;

[0043] Fig.14 This is a schematic diagram of the structure of the long axis in the embodiment of the utility model;

[0044] Fig.15 It is a schematic diagram of the structure of the short shaft in the embodiment of the utility model.

[0045] Among them, 1-base, 11-first cylinder, 111-first slot, 112-second avoidance slot, 12-bottom plate, 2-pressure plate, 21-pressure head, 22-second cylinder, 221-sliding slot, 222-second slot, 223-first avoidance slot; 3-tension sensor, 31-upper hole, 32-lower hole, 33-cable connector, 4-long axis, 41-first column section, 42-second column section, 5-short axis, 6-standard dynamometer. DETAILED DESCRIPTION

[0046] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0047] Based on the embodiments of the present utility model, all other embodiments obtained by ordinary technicians in the field without making any creative work shall fall within the scope of protection of the present utility model.

[0048] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back...) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0049] In addition, in the present invention, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0050] In the present invention, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0051] In addition, the technical solutions between the various embodiments of the present invention can be combined with each other, but it must be based on the fact that ordinary technicians in the field can implement it. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0052] Example:

[0053] like Figure 1 to Figure 2 As shown, the tension sensor testing device in this embodiment includes a base 1, a pressure plate 2, a tension sensor 3, a long axis 4, a short axis 5 and a standard dynamometer 6.

[0054] like Figures 3 to 6 As shown, the base 1 is composed of a first cylinder 11 and a bottom plate 12, and the first cylinder 11 and the bottom plate 12 are arranged and connected in sequence from top to bottom, and the connection method is group welding. The bottom plate 12 is a cylindrical structure, and the diameter of the bottom plate 12 is larger than the outer diameter of the first cylinder 11. The first cylinder 11 is made of round steel, and a first groove 111 is arranged at the upper end of the first cylinder 11. The first groove 111 is composed of a straight section groove in the shape of a rectangular parallelepiped and a semicircular arc section groove, and the processing method is wire cutting. There are two first grooves 111, and the two first grooves 111 are arranged oppositely at the top of the first cylinder 11. The first cylinder 11 is provided with a second avoidance groove 112 along the length direction from the top, and the second avoidance groove 112 is arranged between the two first grooves 111 in the middle position along the circumference of the first cylinder 11. The second avoidance groove 112 is composed of a rectangular straight groove and a semicircular arc groove, and is processed by wire cutting. The length of the straight groove of the second avoidance groove 112 is greater than that of the straight groove of the first clamping groove 111.

[0055] like Figures 7 to 10As shown, the pressure plate 2 is composed of a pressure head 21 and a second cylinder 22, which are arranged and connected in sequence from top to bottom, and the connection method is group welding. The outer diameter of the pressure head 21 is larger than the outer diameter of the second cylinder 22. The second cylinder 22 is made of round steel, and the second cylinder 22 is sequentially provided with a sliding groove 221 and a second clamping groove 222 along the length direction from top to bottom. The second clamping groove 222 is composed of a straight section groove in the shape of a rectangular parallelepiped and a semicircular arc section groove, and the processing method is wire cutting. There are two second clamping grooves 222, and the two second clamping grooves 222 are arranged opposite to each other at the bottom of the second cylinder 22. The sliding groove 221 is composed of a straight section groove in the shape of a rectangular parallelepiped in the middle and semicircular arc section grooves at both ends, and the processing method is wire cutting. There are two sliding grooves 221, and the two sliding grooves 221 are arranged opposite to each other just above the second clamping groove 222. A first avoidance groove 223 is provided at the bottom along the length direction on one side of the second cylinder 22 close to the cable connector 33 of the tension sensor 3. The first avoidance groove 223 is located in the middle position along the circumference of the second cylinder 22 between the two second clamping grooves 222. The first avoidance groove 223 is composed of a straight section groove in the shape of a rectangular parallelepiped and a semicircular arc section groove. The processing method is wire cutting. The length of the straight section groove of the first avoidance groove 223 is greater than the length of the straight section groove of the second clamping groove 222.

[0056] like Figure 1 to Figure 2 As shown, the second cylinder 22 is sleeved in the cavity of the first cylinder 11 , and the first avoidance groove 223 cooperates with the second avoidance groove 112 , so as to facilitate the cable connector 33 of the tension sensor 3 to be led out at the reserved position of the base 1 and the pressure plate 2 .

[0057] like Figures 11 to 13 As shown, the tension sensor 3 is a plate-ring structure, an upper hole 31 and a lower hole 32 are provided at both ends of the tension sensor 3, and a cable connector 33 is provided on one side of the tension sensor 3.

[0058] like Fig.14 As shown, the long axis 4 is composed of a first column segment 41 and a second column segment 42. There are two first column segments 41, and the two first column segments 41 are arranged on both sides of the second column segment 42 in the length direction. The diameter of the first column segment 41 is smaller than the diameter of the second column segment 42. The length of the second column segment 42 is equal to the outer diameter of the first cylinder 11, and the diameter of the second column segment 42 is smaller than the diameter of the upper hole 31.

[0059] like Fig.15 As shown, the short shaft 5 is a columnar structure, and the diameter of the short shaft 5 is smaller than the diameter of the lower hole 32 .

[0060] The material of the long axis 4 and the short axis 5 is 40Cr alloy structural steel, which has been quenched and tempered to HB230-250 and has good comprehensive mechanical properties. The surface is galvanized to prevent metal oxidation.

[0061] like Figure 1 to Figure 2As shown, the tension sensor 3 is sleeved in the cavity of the second cylinder 22. The long axis 4 passes through the first slot 111, the sliding slot 221 and the upper hole 31, and the long axis 4 overlaps the first slot 111. The short axis 5 passes through the second slot 222 and the lower hole 32.

[0062] When positive pressure is applied to the top of the pressure head 21 of the pressure plate 2, the first slot 111 generates an upward force acting on the major axis 4, which is further converted into an upward force applied by the major axis 4 to the upper hole 31 of the tension sensor; the second slot 222 generates a downward pressure acting on the minor axis 5, which is further converted into a downward force applied by the minor axis 5 to the lower hole 32 of the tension sensor. The tension sensor testing device realizes the conversion of the positive pressure applied by the press into a tension on the tension sensor 3.

[0063] like Figure 1 to Figure 2 As shown, the standard dynamometer 6 is disposed in the pressure head 21 .

[0064] The tension sensor 3 and the standard dynamometer 6 are respectively connected to display instruments (not shown in the figure) via signal cables.

[0065] Combine 1 to Figure 2 As shown, the working process of the tension sensor testing device in this embodiment is as follows:

[0066] The base 1 is placed on a working table of a press machine (not shown).

[0067] The tension sensor 3 is sleeved in the cavity of the second cylinder 22 of the pressure plate 2, and the installation direction is that the cable connector 33 and the first avoidance groove 223 are located on the same side, so that the cable connector 33 is led out at the first avoidance groove 223 reserved in the pressure plate 2.

[0068] The long shaft 4 passes through the sliding groove 221 and the upper hole 31 , and the long shaft 4 slidably connects the pressure plate 2 and the tension sensor 3 .

[0069] The short shaft 5 passes through the second slot 222 and the lower hole 32 , and the short shaft 5 slidably connects the pressure plate 2 and the tension sensor 3 .

[0070] Lift the first column segments 41 at both ends of the long axis 4, and place the connected assembly consisting of the pressure plate 2, the tension sensor 3, the long axis 4 and the short axis 5 into the cavity of the first cylinder 11 of the base 1 from the top. The installation direction is that the second avoidance groove 112 and the first avoidance groove 223 are located on the same side, so that the cable connector 33 is led out at the second avoidance groove 112 reserved in the base 1.

[0071] The signal cable is connected to the cable connector 33 of the tension sensor 3 and the display instrument, and the cable connector of the standard dynamometer 6 and the display instrument respectively.

[0072] Start the press, and apply positive pressure to the top of the pressure head 21 of the pressure plate 2 according to the force measuring range of the tension sensor 3, so that the first slot 111 generates an upward force acting on the major axis 4, which is then converted into an upward force applied by the major axis 4 to the upper hole 31 of the tension sensor. The positive pressure applied to the top of the pressure head 21 of the pressure plate 2 causes the second slot 222 to generate a downward pressure acting on the minor axis 5, which is then converted into a downward force applied by the minor axis 5 to the lower hole 32 of the tension sensor. The tension sensor testing device converts the positive pressure applied by the press into a tension on the tension sensor 3, and the major axis 4 and the minor axis 5 will not produce elastic deformation and pressure loss, thereby ensuring the accuracy of the data during the test.

[0073] Read the pressure value on the display instrument connected to the standard dynamometer 6 and the tension value on the display instrument connected to the tension sensor 3, record a set of data according to an arithmetic progression, compare and calculate whether the test error range meets the technical requirements, and then judge the accuracy of the test result of the tension sensor 3.

[0074] So far, the present embodiment has been described in detail in conjunction with the accompanying drawings. Based on the above description, those skilled in the art should have a clear understanding of the tension sensor testing device of the present utility model. Of course, the above is only a preferred embodiment of the present utility model, and does not limit the patent scope of the present utility model. All equivalent structural changes made by using the contents of the present utility model specification and drawings under the utility model concept, or directly / indirectly used in other related technical fields are included in the patent protection scope of the present utility model and should be protected by the present utility model.

Claims

1. A tension sensor testing device, comprising a base, a pressure plate, a tension sensor, a long axis, a short axis and a standard dynamometer; characterized in that: The base is composed of a first cylinder and a bottom plate, which are arranged and connected in sequence from top to bottom; wherein a first slot is arranged at the upper end of the first cylinder; The pressure plate is composed of a pressure head and a second cylinder, which are arranged and connected in sequence from top to bottom; wherein the second cylinder is provided with a sliding groove and a second clamping groove in sequence from top to bottom along the length direction; The second cylinder is sleeved in the cavity of the first cylinder; The tension sensor is a plate-ring structure, with an upper hole and a lower hole provided at both ends of the tension sensor, and a cable connector provided on one side of the tension sensor; The tension sensor is sleeved in the second cylinder cavity; The long axis passes through the first card slot, the sliding slot and the upper hole, and the long axis overlaps the first card slot; The short shaft passes through the second slot and the lower hole; The standard dynamometer is arranged in the pressure head; The tension sensor and the standard dynamometer are connected with a display instrument via a signal cable.

2. The tension sensor testing device according to claim 1, characterized in that: A first avoidance groove is provided along the length direction from the bottom of the second cylinder on one side of the second cylinder close to the cable connector of the tension sensor.

3. The tension sensor testing device according to claim 2, characterized in that: The first cylinder is provided with a second avoidance groove matched with the first avoidance groove from the top along the length direction.

4. The tension sensor testing device according to claim 1, characterized in that: There are two first card slots, and the two first card slots are arranged opposite to each other at the top of the first cylinder.

5. The tension sensor testing device according to claim 1, characterized in that: There are two second card slots, and the two second card slots are arranged opposite to each other at the bottom of the second cylinder.

6. The tension sensor testing device according to claim 1, characterized in that: There are two sliding grooves, which are arranged opposite to each other above the second clamping groove.

7. The tension sensor testing device according to claim 1, characterized in that: The bottom plate is a cylindrical structure, and the diameter of the bottom plate is greater than the outer diameter of the first cylinder.

8. The tension sensor testing device according to claim 1, characterized in that: The outer diameter of the pressure head is greater than the outer diameter of the second cylinder.

9. The tension sensor testing device according to claim 1, characterized in that: The long axis is composed of a first column segment and a second column segment; wherein there are two first column segments, the two first column segments are arranged opposite to each other on both sides of the second column segment along the length direction, and the diameter of the first column segment is smaller than the diameter of the second column segment; The length of the second column section is equal to the outer diameter of the first cylinder, and the diameter of the second column section is smaller than the diameter of the upper hole.

10. The tension sensor testing device according to claim 1, characterized in that: The short axis is a columnar structure, and the diameter of the short axis is smaller than the diameter of the lower hole.

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