Measuring device and measuring apparatus

Abstract

The utility model discloses a measuring device and measuring equipment, the measuring device is used for measuring the clamping force of a tulip contact, the measuring device comprises a bearing structure, at least one transmission structure, a plurality of measuring assemblies and at least one driving structure, the transmission structure is arranged on the bearing structure, each measuring assembly comprises a measuring contact piece and a sensor, and the sensor is arranged on the bearing structure. The sensors are arranged on the transmission structures, the measuring contact pieces are connected to the transmission structures, the driving structures are arranged on the bearing structure, and at least one driving structure is connected to at least one transmission structure. Wherein the driving structure drives the transmission structure to move, so that the plurality of measuring contact pieces abut against the tulip contact, and the clamping force is measured through the sensor. The utility model aims to accurately obtain the real clamping force of the contact in the current service life through the measuring device, improve the measurement accuracy, and accurately judge the current use state of the contact.

Description

Technical Field

[0001] The utility model relates to the technical field of electrical measuring equipment, in particular to a measuring device and measuring equipment. Background Art

[0002] In the power system, during the process of power generation, transmission, distribution and energy conversion, the switch cabinet can start, close, control and protect the electrical equipment. The isolating switch of the switch cabinet is mainly a contact finger structure, which realizes the start and close control through the insertion and separation of the contact fingers and contacts.

[0003] In order to ensure the temperature rise of the switch equipment during long-term operation and the electrical stability and thermal stability during short-circuit current impact, the contact needs to clamp the contact fingers for a long time. However, during the long clamping process, the overall clamping force of the contact will be insufficient, resulting in large contact resistance and overheating of the contact. High temperature and overheating affect the spring performance of the contact periphery, further reducing the contact clamping force. When a large current passes, an arc may be generated, and even sparks may be caused to burn the switch equipment. Therefore, it is necessary to regularly test the contact clamping force and perform separation and closing tests on the contacts and contact fingers to ensure that a high clamping force is maintained between the contacts and the contact fingers.

[0004] However, in the current measuring device, the clamping force of the contact is detected by simulating the contact finger to be rigidly inserted into the contact. However, during the measurement, not only an external force is applied to the contact, but the operation is also difficult, so that the measuring device cannot accurately obtain the true clamping force of the contact under the current service life, and the measurement accuracy is also low. Utility Model Content

[0005] The main purpose of the utility model is to provide a measuring device and a measuring equipment, aiming to accurately obtain the real clamping force of the contact under the current service life through the measuring device, improve the measurement accuracy, and accurately judge the current use status of the contact.

[0006] To achieve the above object, the utility model provides a measuring device for measuring the clamping force of a plum blossom contact, the measuring device comprising:

[0007] load-bearing structure;

[0008] at least one transmission structure, wherein the transmission structure is arranged on the bearing structure;

[0009] A plurality of measuring components, each of which comprises a measuring contact piece and a sensor, wherein the sensor is disposed on the transmission structure, and the measuring contact piece is connected to the transmission structure; and

[0010] At least one driving structure, the driving structure is arranged on the bearing structure, and at least one of the driving structures is connected to at least one of the transmission structures;

[0011] The driving structure drives the transmission structure to move, so that the plurality of measuring contact pieces are pressed against the plum blossom contacts, and the clamping force is measured by the sensor.

[0012] In one embodiment, the measuring device comprises a plurality of the transmission structures, each of the transmission structures is connected to one of the measuring contact pieces, and each of the sensors is disposed on one of the transmission structures;

[0013] The measuring device comprises a driving structure, which is transmission-connected to a plurality of the transmission structures to synchronously drive the plurality of transmission structures to move.

[0014] In one embodiment, the measuring device comprises a plurality of the transmission structures, each of the transmission structures is connected to one of the measuring contact pieces, each of the sensors is arranged on one of the transmission structures, and a transmission gap is formed between two adjacent transmission structures;

[0015] The measuring device includes a plurality of driving structures, each of which is arranged in a transmission gap, and each of which is transmission-connected to one of the transmission structures; or, a driving structure is respectively arranged in some of the transmission gaps, and each of which is transmission-connected to two adjacent transmission structures.

[0016] In one embodiment, the transmission structure includes:

[0017] A connecting rod, the connecting rod is rotatably arranged on the bearing structure, and the measuring contact piece is connected to the connecting rod;

[0018] a limit block, the limit block being arranged on the bearing structure, the limit block being used to limit the rotation angle of the connecting rod so as to limit the active area of ​​the measuring contact piece; and

[0019] A spring sheet, one end of which is connected to the bearing structure, the other end of which is connected to the connecting rod, and the driving structure is drivingly connected to the spring sheet.

[0020] Wherein, the sensor is arranged at the abutment point between the connecting rod and the limit block, and the rotation point of the connecting rod relative to the bearing structure is located between the measuring contact piece and the limit block.

[0021] In one embodiment, the driving structure comprises:

[0022] A driving member, wherein the driving member is disposed on the bearing structure;

[0023] A cam, the cam being rotatably disposed on the bearing structure and movably abutting against the spring sheet; and

[0024] A connecting rod assembly, one end of which is movably connected to the output end of the driving member, and the other end of which is movably connected to the cam.

[0025] In one embodiment, the connecting rod assembly comprises:

[0026] A connecting arm, one end of which is rotatably connected to the output end of the driving member;

[0027] A first rotating shaft, one end of which is connected to the cam, and the other end of which is movably connected to the connecting arm; and

[0028] The second rotating shaft is arranged in parallel with the first rotating shaft and spaced apart from each other, and is movably arranged on the connecting arm, and the other end of the second rotating shaft is connected to the cam.

[0029] In one embodiment, the connecting arm includes a first section and a second section, one end of the first section is connected to the output end of the driving member, the other end of the first section is connected to the second section, and the extension direction of the first section and the extension direction of the second section are set at an angle.

[0030] In one embodiment, a first shaft hole and a second shaft hole are formed at one end of the second section away from the first section, the first rotating shaft is passed through the first shaft hole and connected to the cam, and the second rotating shaft is passed through the second shaft hole and connected to the cam;

[0031] When the driving member drives the connecting arm to rotate, the connecting arm can move along the axial direction of the first rotating shaft and the second rotating shaft.

[0032] In one embodiment, the cam is rotatably connected to the bearing structure and forms a rotation center, the cam includes a locking portion and a connecting portion, and the distance from the connecting portion to the rotation center is smaller than the distance from the locking portion to the rotation center;

[0033] The locking portion is smoothly connected to the connecting portion, the first rotating shaft and the second rotating shaft are arranged on the connecting portion, and the locking portion can be rotatably abutted against the spring sheet.

[0034] The utility model also provides a measuring device, the measuring device comprising:

[0035] the subject; and

[0036] The above-mentioned measuring device is electrically connected to the main body.

[0037] The measuring device of the technical solution of the utility model is used to measure the clamping force of the plum blossom contact. The measuring device is provided with a bearing structure, and the bearing structure is used to install a transmission structure and a driving structure. The measuring device includes at least one transmission structure, at least one driving structure and multiple measuring components. Each measuring component includes a measuring contact piece and a sensor. The sensor is arranged on the transmission structure, the measuring contact piece is connected to the transmission structure, and at least one driving structure is connected to at least one transmission structure; wherein the driving structure drives the transmission structure to move so that the multiple measuring contact pieces are pressed against the plum blossom contact, and the clamping force is measured by the sensor; the present application drives the transmission structure to move through the driving structure, and the transmission structure drives the measuring contact piece to gradually press against the inner ring wall of the plum blossom contact, and then measures the clamping force of the plum blossom contact through the sensor, thereby effectively improving the measurement accuracy, so as to accurately obtain the real clamping force of the contact under the current service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] 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 will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0039] Figure 1 This is a schematic diagram of the structure of a measuring device in one embodiment of the utility model;

[0040] Figure 2 for Figure 1 The enlarged schematic diagram of point A in the middle;

[0041] Figure 3 It is a structural schematic diagram of a measuring device from another perspective in one embodiment of the utility model;

[0042] Figure 4 This is a schematic diagram of the connection structure between the transmission structure and the cam in one embodiment of the utility model;

[0043] Figure 5 It is a schematic structural diagram of a connecting arm in one embodiment of the utility model.

[0044] Description of Figure Numbers:

[0045]

[0046]

[0047] The realization of the purpose, functional features and advantages of the utility model will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0048] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0049] 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.

[0050] At the same time, the meaning of "and / or" or "and / or" appearing in the full text includes three options. Taking "A and / or B" as an example, it includes option A, or option B, or a option in which both A and B are satisfied.

[0051] In addition, in the present utility model, descriptions such as "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" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present utility model.

[0052] In the power system, during the process of power generation, transmission, distribution and energy conversion, the switch cabinet can start, close, control and protect the electrical equipment. The isolating switch of the switch cabinet is mainly a contact finger structure, which realizes the start and close control through the insertion and separation of the contact fingers and contacts.

[0053] Specifically, the contact is formed with an insertion space, and the contact finger can be extended into the insertion space of the contact and maintain a tight connection with the contact to achieve circuit conduction. The shape of the contact can be in-line or plum blossom-shaped. The plum blossom contact is arranged as an annular structure, that is, multiple contacts are distributed in a ring shape and form an insertion space. The contact finger extends into the insertion space and abuts against multiple contacts. The plum blossom contact is usually clamped on the outside of multiple contacts by an annular spring. Similarly, the annular spring is used to give multiple contacts an external force facing the insertion space, so as to effectively increase the clamping force or biting force between the contacts, so as to make the connection between the contacts tighter.

[0054] However, during the long-term clamping process, the annular spring in the plum blossom contact will produce a certain degree of relaxation and fatigue, resulting in insufficient clamping force of the contact on the contact finger. Due to the insufficient clamping force, the transmission gap between the contact and the contact finger becomes larger, which will cause the contact resistance to be too large and easily cause the contact to overheat. Overheating will affect the elastic support of the contact and the elastic performance of the annular spring, further reducing the clamping force of the contact.

[0055] The reduction of the clamping force between the contacts and the contact fingers may cause arcs when large currents pass through, which can easily generate sparks and cause fires, reducing the installability and reliability of electrical equipment. Therefore, the clamping force of the contacts must be tested and measured regularly to understand the clamping force of the contacts under their current service life in real time, and to ensure that a high clamping force is maintained between the contacts and the contact fingers to ensure the safe operation of electrical equipment.

[0056] However, when the current measuring device simulates the contact finger extending into the contact and detects the clamping force of the contact, its overall shape does not change, that is, the measuring device and the contact are directly inserted and rigidly contacted, which makes it impossible for the measuring device to accurately obtain the real clamping force of the contact under the current service life, and the measurement accuracy is low. At the same time, it is difficult for operators to use this type of measuring device for daily operation and maintenance, and the work efficiency is low.

[0057] Please refer to Figures 1 to 5 As shown, to achieve the above-mentioned purpose, the utility model proposes a measuring device 100 for measuring the clamping force of a plum blossom contact, characterized in that the measuring device 100 includes a bearing structure 1, at least one transmission structure 2, a plurality of measuring components 3 and at least one driving structure 4, the transmission structure 2 is arranged on the bearing structure 1, each measuring component 3 includes a measuring contact piece 31 and a sensor 32, the sensor 32 is arranged on the transmission structure 2, the measuring contact piece 31 is connected to the transmission structure 2, the driving structure 4 is arranged on the bearing structure 1, and at least one driving structure 4 is connected to at least one transmission structure 2; wherein the driving structure 4 drives the transmission structure 2 to move so that the plurality of measuring contact pieces 31 press against the plum blossom contact, and the clamping force is measured by the sensor 32.

[0058] In this embodiment, the measuring device 100 can extend into the interior of the plum blossom contact and measure the clamping force of the plum blossom contact. The measuring device 100 is provided with a bearing structure 1, which is a structural supporting component of the measuring device 100 and is used to support and install the driving structure 4 and the transmission structure 2. It can be understood that the structure of the supporting structure 1 can be a table with an installation plane, so that the touch drive structure 4 and the transmission structure 2 are arranged on the installation plane, or it can be a frame, a trough or a shell structure with an installation chamber, and the drive structure 4 and the transmission structure 2 can be arranged in the installation chamber, which is not limited here; preferably, the supporting structure 1 can be a shell structure, the shell structure includes a bottom shell and an upper shell, the bottom shell is formed with a bottom groove, the drive structure 4 and the transmission structure 2 are arranged in the bottom groove, the upper shell covers the bottom groove, and is detachably connected to the bottom shell, so that the upper shell and the bottom shell are enclosed to form an installation chamber; at the same time, the measuring device 100 can change its size according to the position and structural shape of the contact, and can be a smaller handheld portable detection instrument to measure fixed contacts or smaller contacts, or it can be a larger fixed tooling desktop detection instrument, and the contact can be placed on the measuring device 100 for measurement, or a larger contact can be measured.

[0059] Furthermore, if Figure 1 and Figure 3 As shown, the bearing structure 1 is provided with a bearing column 11, and the bearing column 11 is a cylindrical structure, a prismatic structure or a conical structure. The outer wall of the bearing column 11 is formed with a mounting plane for mounting the driving structure 4 and the transmission structure 2. The transmission structure 2 is arranged on the mounting plane and connected to a plurality of measuring contact pieces 31, so that the plurality of measuring contact pieces 31 are arranged in a ring shape around the central axis of the bearing column 11, that is, the plurality of measuring contact pieces 31 are enclosed to form a circle to adapt to the circular inner ring of the plum blossom contact, and the measuring contact pieces 31 are used to press against the inner ring wall of the plum blossom contact when measuring the clamping force of the plum blossom contact.

[0060] In this embodiment, the driving structure 4 is arranged on the bearing structure 1. The driving structure 4 can be arranged on the bearing column 11 of the bearing structure 1, or can be arranged on other structures of the bearing structure 1, such as a separately arranged bearing platform or bearing plate, etc., which is not limited here. At the same time, the transmission structure 2 is connected to multiple measuring contact pieces 31 to drive the multiple measuring contact pieces 31 to approach or move away from the bearing column 11 through the driving structure 4, and when moving away from the central bearing column 11, to press against the inner ring wall of the plum blossom contact.

[0061] Compared with the related art, the driving structure 4 in the present application is not a driving member 41 that is only used to output power. The driving member 41 in the prior art is directly connected to the measuring contact piece 31, and directly drives the measuring contact piece 31 to move and press against the plum blossom contact. Such a setting not only increases the driving force of the driving member 41 when pressing against the plum blossom contact, but also makes it impossible to perform effective clamping force measurement within the nominal deformation range of the plum blossom contact, so that the actual clamping force of the plum blossom contact at this time cannot be accurately obtained, and the actual usage status of the plum blossom contact at this time cannot be obtained.

[0062] It is understandable that if Figures 1 to 4 As shown, in the present application, the clamping force of the plum blossom contact is measured within the nominal range of the plum blossom contact by the cooperation of the driving structure 4 and the transmission structure 2. The driving structure 4 and the transmission structure 2 are a combination of multiple components including a driving member 41, a transmission member and a positioning member. The driving member 41 is a component for outputting power, such as a servo motor, a cylinder, a hydraulic mechanism, etc. The transmission member is used to connect the driving member 41 and the measuring contact piece 31 to output the power of the driving member 41 to the measuring contact piece 31 through the transmission member. The transmission member can be a crank-connecting rod mechanism or a gear set mechanism to realize the transmission of motion and power; the positioning member is used to limit the moving position of the measuring contact piece 31. The positioning member can be a positioning block, a positioning piece, a positioning table and other structures. The positioning member can also be used to control the output end of the driving member 41. The output control module is not limited here. The positioning member can be adapted to the nominal working deformation range of the plum blossom contact to be measured. For example, taking the plum blossom contact with a rated current of 4000 amperes as an example, the diameter of the plum blossom contact before being inserted into the static contact is 107 mm, and the diameter after being inserted into the static contact is expanded to 109 mm. A plurality of measuring contact pieces 31 can be extended into the inner cavity of the plum blossom contact when the diameter of the plum blossom contact is 107 mm. By driving the driving structure 4, a plurality of measuring contact pieces 31 can be expanded to press against the plum blossom contact and keep the diameter of the plum blossom contact at 109 mm. At this time, the positioning member can control the maximum distance of the measuring contact piece 31 away from the bearing column 11 to 109 mm, so as to measure the clamping force of the plum blossom contact within this range, and determine whether the clamping force of the plum blossom contact is within the qualified range. At the same time, the measuring device can measure the rated current of standard plum blossom contacts of different sizes such as 630A, 1250A, 1600A, 2000A, 3150A and 4000A, as well as non-standard plum blossom contacts, which are not limited here.

[0063] In one embodiment, each measuring contact piece 31 is arranged in an arc shape, the arc is concave on one side facing the bearing column 11, and is arranged around the central axis of the bearing column 11; it can be understood that, if Figure 1 and Figure 3As shown, each measuring contact piece 31 is arranged in an arc shape, so that multiple measuring contact pieces 31 can form a complete circle by combining arcs in sections to adapt to the circular internal space of the plum blossom contact, and each arc-shaped measuring contact piece 31 can abut against some of the contact fingers in the plum blossom contact at one time, so as to measure the actual clamping force of multiple contact fingers at the same time, thereby improving the measurement efficiency.

[0064] Optionally, the cross section of the bearing column 11 along the axial direction is circular or polygonal. It is understandable that the driving structure 4 is arranged on the side wall of the bearing column 11. If the bearing column 11 is a polygon, the number of sides of the polygon is limited to an even number of sides such as four sides, six sides and eight sides. Such an arrangement can ensure that on the same straight line passing through the axis of the bearing column 11, the two measuring contact pieces 31 can be arranged on two opposite sides of the bearing column 11, so as to ensure the balance and measurement stability of the overall measuring device 100 and improve the measurement accuracy.

[0065] In one embodiment, the measuring device 100 includes a plurality of transmission structures 2, each transmission structure 2 is connected to a measuring contact piece 31, and each sensor 32 is arranged on a transmission structure 2; the measuring device 100 includes a driving structure 4, which is transmission-connected to the plurality of transmission structures 2 to synchronously drive the plurality of transmission structures 2 to move.

[0066] In this embodiment, if Figure 1 and Figure 3 As shown, multiple transmission structures 2 are arranged on the outer wall of the supporting column 11, and the multiple transmission structures 2 are evenly spaced around the central axis of the supporting column 11, so as to improve the structural stability of the overall measuring device 100. Every two transmission structures 2 are arranged along the same straight line and are symmetrically arranged with the axis of the supporting column 11 as the center. The number of transmission structures 2 can be four, six or eight, which is not limited here; at the same time, the measuring device 100 includes a driving structure 4, and a driving structure 4 can be arranged on the supporting column 11 and is simultaneously connected to multiple transmission structures 2 for transmission.

[0067] It can be understood that when the driving structure 4 drives multiple measuring contact pieces 31 away from the bearing column 11 and abuts against the plum blossom contacts to gradually expand the plum blossom contacts, the positions for supporting each two measuring contact pieces 31 symmetrically arranged with the axis of the bearing column 11 as the center are on the bearing column 11 and located on both sides of the bearing column 11 symmetrically about its axis center. At this time, the force directions of the two measuring contact pieces 31 are opposite and are on the same straight line passing through the axis of the bearing column 11. Such an arrangement can not only enable multiple measuring contact pieces 31 to stably support and expand the plum blossom contacts, but also ensure the accuracy of the measurement results of the two measuring contact pieces 31 in each measurement group, thereby improving the overall measurement accuracy of the measuring device 100.

[0068] It can be understood that the supporting column 11 can be a hollow structure, so that the driving structure 4 is arranged in the hollow area. At the same time, the driving structure 4 is provided with multiple power transmission structures, such as a connecting rod structure, a gear transmission structure 2, etc., to achieve synchronous driving of multiple transmission structures 2 to move, thereby driving the movement of multiple measuring contacts 31, effectively improving the structural compactness of the measuring device 100 and reducing the weight and volume of use.

[0069] In one embodiment, the measuring device 100 includes a plurality of transmission structures 2, each transmission structure 2 is connected to a measuring contact piece 31, each sensor 32 is arranged in a transmission structure 2, and a transmission gap 25 is formed between two adjacent transmission structures 2; the measuring device 100 includes a plurality of driving structures 4, each driving structure 4 is arranged in a transmission gap 25, and each driving structure 4 is transmission-connected to a transmission structure 2; or, a driving structure 4 is respectively arranged in some transmission gaps 25, and each driving structure 4 is transmission-connected to two adjacent transmission structures 2.

[0070] It is understandable that if Figure 1 and Figure 3 As shown, a transmission gap 25 is formed between two adjacent transmission structures 2, so that the driving structure 4 can be arranged in the transmission gap 25 and drive the transmission structure 2 arranged on the transmission structure 2 to move. Specifically, a driving structure 4 can be arranged in a transmission gap 25, and each driving structure 4 drives a transmission structure 2 to move, thereby improving the control accuracy of the driving structure 4 on the measuring contact piece 31. It is also possible to arrange a driving structure 4 in each transmission gap 25 in some transmission gaps 25. At this time, the driving structure 4 drives the two transmission structures 2 on both sides of the transmission gap 25 to move, thereby effectively utilizing the space, improving the structural compactness of the overall measuring device 100, and reducing the use of the driving structure 4 on the basis of ensuring the measurement accuracy, improving the utilization rate of the single driving structure 4, and saving the use space.

[0071] In one embodiment, the transmission structure 2 includes a connecting rod 21, a limit block 22 and a spring piece 23. The connecting rod 21 is rotatably arranged on the bearing structure 1. The measuring contact piece 31 is connected to the connecting rod 21. The limit block 22 is arranged on the bearing structure 1. The limit block 22 is used to limit the rotation angle of the connecting rod 21 to limit the active area of ​​the measuring contact piece 31. One end of the spring piece 23 is connected to the bearing structure 1, and the other end of the spring piece 23 is connected to the connecting rod 21. The driving structure 4 is transmission-connected to the spring piece 23. Among them, the sensor 32 is arranged at the abutment between the connecting rod 21 and the limit block 22, and the rotation point of the connecting rod 21 relative to the bearing structure 1 is located between the measuring contact piece 31 and the limit block 22.

[0072] In this embodiment, if Figure 4As shown, the connecting rod 21 is rotatably arranged on the bearing structure 1, and the extension direction of the connecting rod 21 is the same as the axial direction of the bearing column 11, a measuring contact piece 31 is provided at one end of the connecting rod 21, and the end of the connecting rod 21 away from the measuring contact piece 31 is connected to the driving structure 4 and is provided with a sensor 32, and the rotational connection between the connecting rod 21 and the bearing structure 1 is located between the measuring contact piece 31 and the connection with the driving structure 4.

[0073] It can be understood that the connecting rod 21 as a whole forms a lever structure, and the connecting rod 21 is used to transmit the movement of the driving structure 4 to the measuring contact piece 31. The driving structure 4 pushes one end of the connecting rod 21 to move, and the connecting rod 21 rotates relative to the bearing structure 1, thereby driving the measuring contact piece 31 at the other end to move, so that the measuring contact piece 31 moves away from the bearing column 11 and presses against the plum blossom contact, thereby forming a connecting rod mechanism that can transmit movement to the measuring contact piece 31, so as to efficiently and accurately transmit the movement of the connecting rod 21 to the measuring contact piece 31, and enable the measuring device 100 to flexibly switch between the initial state and the measuring state. At this time, the connecting rod 21 presses the sensor 32, and the sensor 32 can be a pressure sensor 32. The pressure of the measuring contact piece 31 is transmitted to the sensor 32 through the connecting rod 21 to determine the actual clamping force value of the plum blossom contact at this time.

[0074] In this embodiment, one end of the spring piece 23 is connected to the bearing structure 1, and the other end is connected to the connecting rod 21. At the same time, the driving structure 4 is connected to the spring piece 23. The driving structure 4 is used to squeeze the surface of the spring piece 23, thereby changing the position of the connecting rod 21 through the spring piece 23 to achieve elastic pressure on the connecting rod 21, thereby indirectly achieving a change in the state of the measuring contact piece 31.

[0075] At the same time, if Figure 4 As shown, the transmission structure 2 also includes an elastic member 24, which can be a cylindrical spring. One end of the elastic member 24 is connected to the bearing structure 1, and the other end of the elastic member 24 is connected to one end of the connecting rod 21 provided with a measuring contact piece 31, that is, the elastic member 24 is arranged between the rotation connection of the connecting rod 21 relative to the bearing structure 1 and the measuring contact piece 31, so that after the measurement is completed, the connecting rod 21 can be automatically reset under the action of the elastic member 24, so that the next measurement can be extended into the plum blossom contact in the initial state, and when the driving structure 4 drives the connecting rod 21 to move, the end of the connecting rod 21 provided with the measuring contact piece 31 moves in the opposite direction. At this time, the elastic member 24 can buffer the connecting rod 21 to avoid excessive displacement of the connecting rod 21 and damage to the measuring device 100.

[0076] In this embodiment, the transmission structure 2 also includes a limit block 22, which is arranged on the bearing structure 1. The limit block 22 limits and abuts against one end of the connecting rod 21 away from the measuring contact piece 31 to limit the movable range of the measuring contact piece 31. Specifically, when the connecting rod 21 rotates around the rotating connection with the bearing structure 1, the limit block 22 can limit the connecting rod 21, thereby indirectly limiting the moving distance of the measuring contact piece 31. For example, the nominal working inner diameter of a certain plum blossom contact is between 107 mm and 109 mm. Exceeding 109 mm indicates that the spring of the plum blossom contact is loose and the clamping force is insufficient. Therefore, the position of the limit block 22 can be adjusted to limit and constrain the rotation angle of the connecting rod 21, thereby limiting the distance of the measuring contact piece 31 away from the center of the axis of the bearing column 11 to 109 mm. On this basis, the measuring device 100 determines that the clamping force is within the qualified range, which indicates that the clamping force of the plum blossom contact is qualified.

[0077] At the same time, the position of the limit block 22 relative to the bearing structure 1 can be adjusted, such as the limit block 22 is slidably arranged on the bearing structure 1, or is arranged on the bearing structure 1 through multiple positioning holes. By adjusting the position of the limit block 22 in the moving direction of the measuring contact to adjust the rotation angle of the connecting rod 21, the distance of the measuring contact away from the center of the bearing column 11 is adjusted to adapt to plum blossom contacts of different nominal sizes, thereby improving the versatility and applicability of the measuring device 100.

[0078] Specifically, the supporting structure 1 is provided with a slide rail, and the limit block 22 is provided with a slide groove corresponding to the slide rail, and the slide groove is connected with the slide rail so that the limit block 22 can slide along the slide rail; the limit block 22 is also provided with an adjusting member, which is arranged on the supporting structure 1 and connected to the limit block 22, and the adjusting member is used to adjust the position of the limit block 22.

[0079] It can be understood that the limit block 22 is slidably connected to the bearing structure 1, that is, it is not limited to the cooperation with the slide rail groove, and a guide column can also be provided on the bearing structure 1, and the limit block 22 is provided with a guide hole corresponding to the guide column, so as to realize the sliding of the limit block 22 relative to the bearing structure 1. The setting of the slide rail groove or the guide column guide hole not only realizes the sliding of the limit block 22 relative to the bearing structure 1, but also ensures that the limit block 22 slides in a fixed direction and ensures that the moving direction of the limit block 22 is not skewed, thereby ensuring the accuracy of the position adjustment of the connecting rod 21 to ensure the accuracy of the movement of the measuring contact piece 31.

[0080] At the same time, the limit block 22 is also provided with an adjusting member, which is movably arranged on the bearing structure 1 and movably connected to the limit block 22, and the adjusting member is used to adjust the position of the limit block 22. Specifically, the adjusting member can be a manual adjustment structure, such as an adjusting bolt that is arranged to abut against the limit block 22, and the limit block 22 can be moved along the slide rail by rotating the adjusting bolt, or an adjusting screw rod can be arranged, and the sliding of the limit block 22 can be achieved by rotating the adjusting screw rod. It can also be an automatic adjustment structure, such as a servo motor, and the limit block 22 is connected to the output end of the servo motor to adjust the position of the limit block 22, which is not limited here.

[0081] In one embodiment, the driving structure 4 includes a driving member 41, a cam 42 and a connecting rod assembly 43. The driving member 41 is arranged on the supporting structure 1, the cam 42 is rotatably arranged on the supporting structure 1, the cam 42 is movably abutted against the spring plate 23, one end of the connecting rod assembly 43 is movably connected to the output end of the driving member 41, and the other end of the connecting rod assembly 43 is movably connected to the cam 42.

[0082] In this embodiment, if Figures 1 to 4 As shown, the driving structure 4 is provided with a driving member 41, such as a cylinder, a motor, etc., for outputting power. The connecting rod assembly 43 is a crank-connecting rod mechanism. The connecting rod assembly 43 is connected to the driving member 41. The driving member 41 drives the connecting rod assembly 43 to move. The other end of the connecting rod assembly 43 is connected to the cam 42. The cam 42 rotates and abuts against the elastic sheet. The cam 42 rotates relative to the elastic sheet to transmit the power of the driving member 41 to the elastic sheet through the connecting rod assembly 43. The elastic sheet changes the position of the connecting rod 21, so that the connecting rod 21 drives the measuring contact piece 31 to move, and makes the measuring contact piece 31 abut against the inner ring wall of the plum blossom contact, so as to realize the transmission of motion in a narrow space and improve the transmission efficiency of the driving structure 4 in a narrow space.

[0083] It can be understood that the cam 42 is rotatably arranged on the bearing structure 1, so that the cam 42 can change the state of the spring sheet 23 by movably abutting against the spring sheet 23. When the cam 42 is tightly abutted against the spring sheet 23, the spring sheet 23 also drives the connecting rod 21 to move, and drives the measuring contact piece 31 to move, so that the measuring device 100 enters the measuring state; when the cam 42 is out of abutment with the spring sheet 23, the spring sheet 23 is in a relaxed state, and the measuring contact piece 31 no longer abuts against the plum blossom contact. That is, the cam 42 is used to adjust the state of the connecting rod 21 and the measuring contact piece 31 through the spring sheet 23, thereby changing the state of measurement. At the same time, the cam 42 also has a locking function in place, so that in the measuring state, the measuring contact piece 31 and the connecting rod 21 remain relatively fixed, thereby improving the safety and continuity of detection.

[0084] In addition, the cam 42 applies pressure to the spring piece 23, and the spring piece 23 presses against the limit block 22, thereby applying the elastic force generated by the deformation of the spring piece 23 to the connecting rod 21, so that the measuring contact piece 31 remains fixed relative to the supporting column 11. At this time, the elastic force generated by the spring piece 23 is sufficient to resist the pressure of the contact on the measuring contact piece 31, effectively ensuring the normal operation of the measuring contact piece 31, so that the measuring contact piece 31 presses against the plum blossom contact and measures the clamping force through the sensor 32.

[0085] In one embodiment, the connecting rod assembly 43 includes a connecting arm 431, a first rotating shaft 432 and a second rotating shaft 433, one end of the connecting arm 431 is rotatably connected to the output end of the driving member 41, one end of the first rotating shaft 432 is connected to the cam 42, the other end of the first rotating shaft 432 is movably connected to the connecting arm 431, the second rotating shaft 433 is arranged in parallel with the first rotating shaft 432 and is movably arranged on the connecting arm 431, and the other end of the second rotating shaft 433 is connected to the cam 42.

[0086] In this embodiment, if Figures 1 to 5 As shown, the connecting arm 431 is the main supporting component of the connecting rod assembly 43, one end of the connecting arm 431 is movably connected to the output end of the driving member 41, and the other end of the connecting arm 431 is movably connected to the cam 42 in the transmission structure 2 through the first rotating shaft 432 and the second rotating shaft 433. Specifically, the first rotating shaft 432 and the second rotating shaft 433 are arranged in parallel and spaced apart on the cam 42, that is, the extension directions of the first rotating shaft 432 and the second rotating shaft 433 are parallel and perpendicular to the plane where the maximum cross-section of the mounting plate is located, the connecting arm 431 extends along the plane of the mounting plate, and is rotatably connected to the first rotating shaft 432 and the second rotating shaft 433, and at the same time, the driving member 41 drives the connecting arm 431 to rotate along the axial direction perpendicular to the first rotating shaft 432 and the second rotating shaft 433, so that the connecting arm 431 can drive the cam 42 to rotate, so as to change the pressing state of the spring piece 23, thereby changing the working state of the measuring contact piece 31 through the connecting rod 21.

[0087] It can be understood that the extension direction of the connecting arm 431 and the power output direction of the driving member 41 are set at an angle, so that the driving member 41 and the connecting rod assembly 43 can transmit motion in a relatively narrow space. At the same time, through the first rotating shaft 432 and the second rotating shaft 433, when the connecting arm 431 rotates around one of the first rotating shaft 432 or the second rotating shaft 433, it can drive the cam 42 to rotate through the other one to realize the movement of the cam 42. At the same time, the connecting arm 431 is not only rotationally connected to the first rotating shaft 432 and the second rotating shaft 433, but also has a sliding connection relationship, so that when the connecting arm 431 drives the cam 42 to move, it has higher flexibility, avoids the generation of rotation dead angles, and has better power transmission performance in a narrow space.

[0088] In one embodiment, the connecting arm 431 includes a first section 4311 and a second section 4312, one end of the first section 4311 is connected to the output end of the driving member 41, and the other end of the first section 4311 is connected to the second section 4312, and the extension direction of the first section 4311 and the extension direction of the second section 4312 are set at an angle.

[0089] It is understandable that if Figure 5 As shown, the first section 4311 and the second section 4312 can be integrally formed or detachably connected. The first section 4311 is rotatably connected to the output end of the driving member 41, and the second section 4312 is rotatably connected to the first rotating shaft 432 and the second rotating shaft 433. The extension direction of the first section 4311 and the extension direction of the second section 4312 are set at an angle, so that when the first section 4311 rotates a certain angle relative to the driving member 41, on the basis of driving the cam 42 to rotate by the first rotating shaft 432 and the second rotating shaft 433 to compress the spring piece 23, the rotation angle of the second section 4312 changes less, thereby realizing efficient power transmission in a narrow space, effectively improving the power transmission effect of the driving mechanism in the space between the mounting plates or in the bearing column 11, and ensuring that the cam 42 is rotated into place to realize the precise force application of the measuring contact piece 31 to the plum blossom contact.

[0090] In one embodiment, a first shaft hole 4313 and a second shaft hole 4314 are formed at one end of the second section 4312 away from the first section 4311, the first rotating shaft 432 is passed through the first shaft hole 4313 and is connected to the cam 42, and the second rotating shaft 433 is passed through the second shaft hole 4314 and is connected to the cam 42; wherein, when the driving member 41 drives the connecting arm 431 to rotate, the connecting arm 431 can move along the axial direction of the first rotating shaft 432 and the second rotating shaft 433.

[0091] It is understandable that if Figure 2 and Figure 5 As shown, the second section 4312 is provided with a first shaft hole 4313 and a second shaft hole 4314 corresponding to the first rotating shaft 432 and the second rotating shaft 433, so that the connecting arm 431 can be rotatably connected with the first rotating shaft 432 and the second rotating shaft 433 through the first shaft hole 4313 and the second shaft hole 4314, and the connecting arm 431 can also move along the axial direction of the first rotating shaft 432 and the second rotating shaft 433, so that when the connecting arm 431 rotates, it can achieve a larger angle of rotation through the moving space along the axial direction of the first rotating shaft 432 and the second rotating shaft 433, avoiding constraints and restrictions on the rotation of the connecting arm 431 due to the setting of the first rotating shaft 432 and the second rotating shaft 433, thereby improving the flexibility of the overall transmission of the transmission structure 2 and reducing restrictions, thereby fully ensuring that the cam 42 can rotate into place.

[0092] In one embodiment, the cam 42 is rotatably connected to the bearing structure 1 and forms a rotation center 421. The cam 42 includes a locking portion 422 and a connecting portion 423. The distance from the connecting portion 423 to the rotation center 421 is smaller than the distance from the locking portion 422 to the rotation center 421.

[0093] The locking portion 422 is smoothly connected to the connecting portion 423 , the first rotating shaft 432 and the second rotating shaft 433 are disposed on the connecting portion 423 , and the locking portion 422 can be rotatably abutted against the elastic sheet 23 .

[0094] In this embodiment, if Figure 4 As shown, the cam 42 is movably in contact with the elastic sheet 23 , and the cam 42 is rotationally connected to the driving structure 4 , and a rotation center 421 is formed. It can be understood that the driving structure 4 drives the cam 42 to rotate so that various parts of the cam 42 are movably abutted against the spring piece 23. Specifically, the cam 42 includes a locking portion 422 and a connecting portion 423. The locking portion 422 is used to abut the spring piece 23 so that the connecting rod 21 can drive the measuring contact piece 31 to the maximum extent to abut the plum blossom contact to enter the measuring state. The connecting portion 423 is used to relax the spring piece 23 and make the measuring device 100 enter the initial state. Therefore, the distance from the locking portion 422 to the rotation center 421 is greater than the distance from the connecting portion 423 to the rotation center 421, so as to ensure that when the locking portion 422 abuts against the spring piece 23, a greater pressure can be applied to the spring piece 23. The locking portion 422 and the connecting portion 423 are smoothly connected, which is also beneficial for the operator to operate the cam 42 and reduce the friction loss between the cam 42 and the spring piece 23.

[0095] The utility model also provides a measuring device, which includes a main body and the above-mentioned measuring device 100, and the measuring device 100 is electrically connected to the main body. The specific structure of the measuring device 100 refers to the above-mentioned embodiment. Since the measuring device adopts all the technical solutions of all the above-mentioned embodiments, it at least has all the beneficial effects brought by the technical solutions of the above-mentioned embodiments, which will not be repeated here one by one.

[0096] It can be understood that the main body includes a power supply, a control circuit and a display 5. The power supply is electrically connected to the control circuit, the display 5 and the sensor 32 for providing electrical energy. The control circuit is electrically connected to the sensor 32 to receive the force measurement value of the sensor 32. The display 5 is electrically connected to the control circuit to display the actual clamping force value of the contact measured by the sensor 32.

[0097] At the same time, the main body also includes a communication device and a mobile device, etc. The power supply is electrically connected to the communication device, the display 5 and the sensor 32 for providing electrical energy. The communication device is used to connect the measuring device 100 with the server or other data platform and realize the transmission of data and communication. The mobile device is used to transfer the measuring device 100.

[0098] The above description is only an optional embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A measuring device for measuring the clamping force of a plum blossom contact, characterized in that: The measuring device comprises: load-bearing structure; at least one transmission structure, wherein the transmission structure is arranged on the bearing structure; A plurality of measuring components, each of which comprises a measuring contact piece and a sensor, wherein the sensor is disposed on the transmission structure, and the measuring contact piece is connected to the transmission structure; and At least one driving structure, the driving structure is arranged on the bearing structure, and at least one of the driving structures is connected to at least one of the transmission structures; The driving structure drives the transmission structure to move, so that the plurality of measuring contact pieces are pressed against the plum blossom contacts, and the clamping force is measured by the sensor.

2. The measuring device according to claim 1, characterized in that The measuring device comprises a plurality of transmission structures, each of which is connected to one of the measuring contact pieces, and each of the sensors is arranged on one of the transmission structures; The measuring device comprises a driving structure, which is transmission-connected to a plurality of the transmission structures to synchronously drive the plurality of transmission structures to move.

3. The measuring device according to claim 1, characterized in that The measuring device comprises a plurality of transmission structures, each of which is connected to a measuring contact piece, each of which is provided on a transmission structure, and a transmission gap is formed between two adjacent transmission structures; The measuring device includes a plurality of driving structures, each of which is arranged in a transmission gap, and each of which is transmission-connected to one of the transmission structures; or, a driving structure is respectively arranged in some of the transmission gaps, and each of which is transmission-connected to two adjacent transmission structures.

4. The measuring device according to claim 1, characterized in that The transmission structure comprises: A connecting rod, the connecting rod is rotatably arranged on the bearing structure, and the measuring contact piece is connected to the connecting rod; a limit block, the limit block being arranged on the bearing structure, the limit block being used to limit the rotation angle of the connecting rod so as to limit the active area of ​​the measuring contact piece; and A spring sheet, one end of which is connected to the bearing structure, the other end of which is connected to the connecting rod, and the driving structure is drivingly connected to the spring sheet; Wherein, the sensor is arranged at the abutment point between the connecting rod and the limit block, and the rotation point of the connecting rod relative to the bearing structure is located between the measuring contact piece and the limit block.

5. The measuring device according to claim 4, characterized in that The driving structure comprises: A driving member, wherein the driving member is disposed on the bearing structure; A cam, the cam being rotatably disposed on the bearing structure and movably abutting against the spring sheet; and A connecting rod assembly, one end of which is movably connected to the output end of the driving member, and the other end of which is movably connected to the cam.

6. The measuring device according to claim 5, characterized in that The connecting rod assembly comprises: A connecting arm, one end of which is rotatably connected to the output end of the driving member; A first rotating shaft, one end of which is connected to the cam, and the other end of which is movably connected to the connecting arm; and The second rotating shaft is arranged in parallel with the first rotating shaft and spaced apart from each other, and is movably arranged on the connecting arm, and the other end of the second rotating shaft is connected to the cam.

7. The measuring device according to claim 6, characterized in that The connecting arm includes a first section and a second section, one end of the first section is connected to the output end of the driving member, the other end of the first section is connected to the second section, and the extension direction of the first section and the extension direction of the second section are set at an angle.

8. The measuring device according to claim 7, characterized in that A first shaft hole and a second shaft hole are formed at one end of the second section away from the first section, the first rotating shaft is passed through the first shaft hole and connected to the cam, and the second rotating shaft is passed through the second shaft hole and connected to the cam; When the driving member drives the connecting arm to rotate, the connecting arm can move along the axial direction of the first rotating shaft and the second rotating shaft.

9. The measuring device according to claim 6, characterized in that The cam is rotatably connected to the bearing structure and forms a rotation center, the cam comprises a locking portion and a connecting portion, and the distance from the connecting portion to the rotation center is smaller than the distance from the locking portion to the rotation center; The locking portion is smoothly connected to the connecting portion, the first rotating shaft and the second rotating shaft are arranged on the connecting portion, and the locking portion can be rotatably abutted against the spring sheet.

10. A measuring device, characterized in that: The measuring device comprises: the subject; and The measuring device according to any one of claims 1 to 9, wherein the measuring device is electrically connected to the main body.

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