Measuring apparatus and measuring device

Abstract

The present application discloses a measuring apparatus and a measuring device. The measuring apparatus is used for measuring a clamping force of a contact, and comprises a bearing structure, a contact finger module, and a transmission structure. The contact finger module comprises a first contact finger and a second contact finger. The second contact finger is provided on the bearing structure, and the first contact finger is movable relative to the second contact finger. The transmission structure comprises a transmission main body and a sensor, and the sensor and the first contact finger are provided on the transmission main body. The transmission main body drives the first contact finger to move so that the measuring apparatus has an initial state and a working state. In the initial state, the contact finger module can extend into a contact to be tested. In the working state, the transmission structure can drive the first contact finger to move, so that the first contact finger and the second contact finger are spaced apart in parallel and abut against the inside of the contact so as to measure the clamping force of the contact by means of the sensor.

Description

Measuring devices and measuring equipment

[0001] This application claims priority to Chinese patent application No. 202311157280.2 filed on September 7, 2023, the entire contents of which are incorporated by reference into this application. Technical Field

[0002] The present application relates to the technical field of electrical contact clamping force measurement, and in particular to a measuring device and a measuring equipment using the measuring device. Background Art

[0003] In the power system, during the process of power generation, transmission, distribution and energy conversion, the switchgear can start and close, control and protect the electrical equipment. The isolating switch of the switchgear is mainly a contact finger structure, which realizes the opening and closing control through the insertion and separation of the contact fingers and contacts.

[0004] In order to ensure the temperature rise of the switchgear during long-term operation and the electrical and thermal stability during short-circuit current impact, the contacts need to clamp the contact fingers for a long time. However, during the long clamping process, the overall clamping force of the contacts will be insufficient, resulting in large contact resistance and overheating of the contacts. High temperature overheating affects the spring performance of the contact periphery, further reducing the contact clamping force. When large current passes through, arcs may be generated, and even sparks may be triggered to burn the switchgear. Therefore, it is necessary to regularly test the contact clamping force and perform opening 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.

[0005] 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, it is rigidly connected to the contact, making it impossible for the measuring device to accurately obtain the true clamping force of the contact under the current service life. 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. Technical issues

[0006] The main purpose of this application is to provide a measuring device and measuring equipment, which aims to accurately obtain the actual clamping force of the contact under its current service life through the measuring device, so as to accurately judge the current usage status of the contact, facilitate the operation of operation and maintenance personnel, and improve work efficiency. Technical Solutions

[0007] To achieve the above objectives, the present application proposes a measuring device for measuring the clamping force of a contact, the measuring device comprising:

[0008] load-bearing structure;

[0009] a finger contact module, the finger contact module comprising a first finger contact and a second finger contact, the second finger contact being provided on the supporting structure, and the first finger contact being movable relative to the second finger contact; and

[0010] a transmission structure, the transmission structure being provided on the bearing structure, the transmission structure comprising a transmission body and a sensor, the sensor being provided on the transmission body, and the first contact finger being provided on the transmission body;

[0011] The transmission body drives the first contact finger to move so that the measuring device has an initial state and a working state. In the initial state, the contact finger module can extend into the contact to be measured; in the working state, the transmission structure can drive the first contact finger to move so that the first contact finger and the second contact finger are arranged in parallel and spaced apart, and are pressed against the contact, so that the clamping force of the contact can be detected by the sensor.

[0012] In one embodiment, the transmission body includes a linkage module and a locking module, the linkage module is movably disposed on the bearing structure, and the first contact finger and the sensor are disposed on the linkage module;

[0013] The locking module is disposed on the bearing structure and movably abuts against an end of the linkage module away from the first contact finger.

[0014] In one embodiment, the linkage module includes:

[0015] a connecting rod, wherein the first contact finger is provided on the connecting rod, the connecting rod is rotatably provided on the bearing structure, and a rotation connection is formed on the connecting rod;

[0016] a linkage block, the sensor being provided on the linkage block, the linkage block being connected to the connecting rod, and the locking module being movably in contact with the linkage block; and

[0017] an elastic member, one end of which is connected to the bearing structure, the other end of which is connected to the connecting rod, and an elastic connection portion is formed on the connecting rod;

[0018] Wherein, the rotation connection is located between the first contact finger and the linkage block, and the elastic connection is located between the first contact finger and the rotation connection.

[0019] In one embodiment, the supporting structure is formed with a mounting surface, the second contact finger is arranged on the mounting surface, and a support platform is provided near the mounting surface and adjacent to the second contact finger. The support platform is extended from the mounting surface to the direction of the connecting rod, and the connecting rod is rotatably connected to the support platform so that the connecting rod can rotate around the support platform.

[0020] In one embodiment, the support platform is arranged with a cross-sectional area gradually decreasing from one end of the mounting surface to one end abutting against the connecting rod;

[0021] The connecting rod is provided with a limiting groove corresponding to the supporting platform, and one end of the supporting platform away from the mounting surface abuts against the bottom wall of the limiting groove.

[0022] In one embodiment, the locking module includes an adjustment unit and a limit column. The adjustment unit is arranged on the supporting structure and connected to the limit column. The limit column is movably arranged on the supporting structure. The adjustment unit is used to adjust the limit column to abut against or away from the linkage module to achieve the transition between the working state and the initial state of the measuring device.

[0023] In one embodiment, the adjustment unit includes an elastic sheet and a locking member, one end of the elastic sheet is connected to the supporting structure, the other end of the elastic sheet is connected to the limiting column, and the locking member is movably provided on the supporting structure and movably abuts against the elastic sheet.

[0024] In one embodiment, the locking member includes a locking head and an operating rod, the locking head is rotatably connected to the supporting structure and forms a rotation center, the locking head includes a locking portion and a transition portion, the distance between the transition portion and the rotation center is smaller than the distance between the locking portion and the rotation center, and the locking portion and the transition portion are smoothly transitionally connected;

[0025] The operating rod is connected to the transition portion.

[0026] In one embodiment, a line connecting the rotation center to the locking portion is arranged at an angle to an extension direction of the operating rod;

[0027] The locking head further includes a receiving portion, which is respectively connected to the transition portion and the operating rod and extends in a direction away from the rotation center. The receiving portion is used to abut against the elastic sheet to receive the locking member.

[0028] The present application also proposes a measuring device, comprising:

[0029] the subject; and

[0030] As for the above-mentioned measuring device, the measuring device is electrically connected to the main body. Beneficial effects

[0031] The measuring device of the technical solution of the present application is used to measure the clamping force or biting force of the switch contact. The measuring device is provided with a bearing structure, which is a structural support component of the measuring device and is used to support and install a finger module and a transmission structure. The finger module includes a first finger and a second finger. The second finger is arranged on the bearing structure, and the first finger can be movably arranged relative to the second finger. The transmission structure is movably arranged on the bearing structure. The transmission structure includes a transmission body and a sensor, and the sensor and the first finger are both arranged on the transmission body. The transmission body can drive the first finger to move, so that the measuring device has an initial state and a Working state, in the initial state, the contact finger module can be extended into the contact to be measured to avoid the rigid insertion of the contact finger module and the contact to be measured. In the working state, the transmission structure can drive the first contact finger to move, so that the first contact finger and the second contact finger are arranged in parallel and spaced apart, and the first contact finger and the second contact finger are both pressed against the contact, giving the contact an external force to expand outward. At the same time, the transmission body also applies the same force to the sensor to realize the measurement of the contact clamping force, and can measure the actual clamping force of the contact under the current life, so as to accurately judge the current usage status of the contact, and facilitate the operation of the operation and maintenance personnel to improve work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0033] FIG1 is a schematic structural diagram of a measuring device according to an embodiment of the present application;

[0034] FIG2 is a schematic structural diagram of a linkage module according to an embodiment of the present application;

[0035] FIG3 is a schematic structural diagram of a locking module in one embodiment of the present application;

[0036] FIG4 is a schematic structural diagram of a locking member in an embodiment of the present application.

[0037] Description of Figure Numbers:

[0038] Reference numerals: Reference numerals: 100 measuring device 311b elastic connection 1 bearing structure 311c limiting groove 11 mounting surface 312 locking module 12 supporting platform 3121 adjusting unit 2 finger module 3122 limiting column 21 first finger 3123 elastic sheet 22 second finger 3124 locking member 3 transmission structure 3124a locking head 31 transmission body 3124b operating rod 311 linkage module 3124c rotation center 3111 connecting rod 3124d locking portion 3112 linkage block 3124e transition portion 3113 elastic member 3124f storage portion 311a rotation connection 32 sensor

[0039] The realization of the objectives, functional features and advantages of this application will be further explained in conjunction with embodiments and with reference to the accompanying drawings. Modes for Carrying Out the Invention

[0040] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0041] It should be noted that all directional indications in the embodiments of the present application (such as up, down, left, right, front, back, etc.) are only used to explain the relative position relationship, movement status, etc. between the various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0042] 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 an option in which both A and B are satisfied.

[0043] In addition, the descriptions of "first", "second", etc. in this application are for descriptive purposes only and should not be understood as indicating or implying their relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined as "first" or "second" may explicitly or implicitly include at least one of such features. In addition, the technical solutions between the various embodiments can be combined with each other, but this must be based on the fact that they can be implemented by ordinary technicians in this field. 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 this application.

[0044] In the power system, during the process of power generation, transmission, distribution and energy conversion, the switchgear can start and close, control and protect the electrical equipment. The isolating switch of the switchgear is mainly a contact finger structure, which realizes the opening and closing control through the insertion and separation of the contact fingers and contacts.

[0045] 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 in-line contact is provided with multiple contacts, and the multiple contacts are arranged at intervals along a straight line and are provided in two opposite rows to form an insertion space, which is inserted with the contact finger and pushed against the contact by an elastic support member to give the contact an external force facing the insertion space, thereby effectively improving the clamping force or bite force between the contacts, making the connection between the contacts tighter.

[0046] The plum blossom contact is set as an annular structure, that is, multiple contacts are distributed in a ring shape and form an insertion space. The contact fingers extend into the insertion space and abut against multiple contacts. The plum blossom contact is usually clamped on the outside of the multiple contacts by an annular spring. Similarly, the annular spring is used to give the multiple contacts an external force facing the insertion space, so as to effectively increase the clamping force or biting force between the contacts, making the connection between the contacts tighter.

[0047] However, during the long clamping process, the elastic support members in the in-line contacts and the annular springs in the plum blossom contacts will relax and fatigue to a certain extent, resulting in insufficient clamping force of the contacts on the contact fingers. Due to insufficient clamping force, the gap between the contacts and the contact fingers becomes larger, which will cause the contact resistance to be too large and easily cause the contacts to overheat. Overheating will affect the elastic performance of the contact elastic support members and the annular springs, further reducing the contact clamping force.

[0048] A reduction in the clamping force between the contacts and the contact fingers may cause arcing when a large current passes 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 regularly tested and measured to understand the clamping force of the contacts in 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.

[0049] 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 in hard contact, which makes it impossible for the measuring device to accurately obtain the true clamping force of the contact under the current service life, and the measurement accuracy is low. At the same time, it is also difficult for operators to use this type of measuring device for daily operation and maintenance, and the work efficiency is low.

[0050] With reference to Figures 1 to 4 , based on the above background and problems, the present application provides a measuring device 100 for measuring the clamping force of a contact. The measuring device 100 includes a supporting structure 1, a contact module 2, and a transmission structure 3. The contact module 2 includes a first contact finger 21 and a second contact finger 22. The second contact finger 22 is disposed on the supporting structure 1 and is movable relative to the second contact finger 22. The transmission structure 3 includes a transmission body 31 and a sensor 32. The sensor 32 is disposed on the transmission body 31, and the first contact finger 21 is disposed on the transmission body 31. The transmission body 31 drives the first contact finger 21 to move so that the measuring device 100 has an initial state and an operating state. In the initial state, the contact module 2 can extend into the contact to be measured. In the operating state, the transmission structure 3 can drive the first contact finger 21 to move so that the first contact finger 21 and the second contact finger 22 are arranged parallel to and spaced apart from each other and abut against the contact, so that the clamping force of the contact is detected by the sensor 32.

[0051] In this embodiment, as shown in FIG1 , the measuring device 100 is used to measure the clamping force or bite force of the contact. The bearing structure 1 is a structural support component of the measuring device 100 , and is used to support and install the contact finger module 2 and the transmission structure 3 . It can be understood that the structure of the supporting structure 1 can be a table with a mounting plane, so that the touch module 2 and the transmission structure 3 are arranged on the mounting plane, or it can be a frame, a trough or a shell structure with a mounting chamber, and the touch module 2 and the transmission structure 3 can be arranged in the mounting chamber, which is not limited here; in one embodiment, 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 touch module 2 and the transmission structure 3 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 enclose to form a mounting chamber; at the same time, the measuring device 100 can change the 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.

[0052] In this embodiment, the contact finger module 2 includes a first contact finger 21 and a second contact finger 22. The first contact finger 21 and the second contact finger 22 are plate-shaped or columnar structures. The first contact finger 21 and the second contact finger 22 extend toward one end away from the support structure 1. The second contact finger 22 is fixed to the support structure 1. The first contact finger 21 can move relative to the second contact finger 22, so that the spacing between the first contact finger 21 and the second contact finger 22 can be changed. Specifically, the measuring device 100 has an initial state and an operating state. By adjusting the first contact finger 21, the state of the first contact finger 21 and the positional relationship between the first contact finger 21 and the second contact finger 22 are changed, thereby achieving the transition between the initial state and the operating state of the measuring device 100. It is understandable that in conventional measuring devices 100, the measuring device 100 is rigidly inserted into the contact insertion space, which may cause damage to the contacts and inaccurate measurement results, making it impossible to obtain the actual clamping force of the contacts under the current service life.

[0053] In the present application, the first contact finger 21 is movable relative to the second contact finger 22. By adjusting the first contact finger 21, the distance between the first contact finger 21 and the second contact finger 22 is reduced. At this time, the measuring device 100 is in the initial state, and the measuring device 100 is easily inserted into the insertion space formed by the contacts, avoiding rigid insertion of the measuring device 100 and the contacts, and avoiding possible damage to the contacts. The first contact finger 21 is adjusted again so that the position of the first contact finger 21 relative to the second contact finger 22 is fixed, and a fixed gap is formed between the first contact finger 21 and the second contact finger 22. The fixed gap is the same as the gap formed by the insertion space formed by the contacts to be measured, so that the first contact finger 21 and the second contact finger 22 can respectively press against the contacts in the insertion space, exerting an external force on the contacts away from the insertion space, and transmitting the external force to the sensor 32 through the transmission structure 3 to measure the clamping force of the contacts, thereby accurately obtaining the actual clamping force of the contacts in the current state and improving the measurement accuracy.

[0054] In this embodiment, as shown in Figures 1 and 2, the measuring device 100 also includes a transmission structure 3, which includes a transmission body 31 and a sensor 32. The transmission body 31 can be a connecting rod transmission structure 3 or a gear set transmission structure 3, which is not limited here. The sensor 32 is connected to the transmission body 31, and the transmission body 31 is connected to the first contact finger 21.

[0055] It can be understood that the transmission body 31 is used to adjust the first contact finger 21. Through the transmission body 31, the first contact finger 21 can be moved relative to the second contact finger 22. That is, the transmission body 31 includes two parts, an adjustment component and an execution component, which are connected to each other. The first contact finger 21 is connected to the execution component. The user operates the adjustment component to drive the execution component to move, thereby realizing the movement of the first contact finger 21 relative to the second contact finger 22 and enabling the measuring device 100 to switch between the initial state and the working state.

[0056] At the same time, the sensor 32 can be a pressure sensor 32, such as a resistive film pressure sensor 32, a cylindrical tension pressure sensor 32 or a film pressure sensor 32, etc., which is not limited here. The sensor 32 is arranged on the execution component of the transmission structure 3. When the measuring device 100 enters the working state, that is, the first contact finger 21 is fixed relative to the second contact finger 22, and the first contact finger 21 and the second contact finger 22 are arranged in parallel and spaced apart. At this time, the first contact finger 21 and the second contact finger 22 are respectively pressed against the contact, and the sensor 32 starts to be subjected to force, so as to detect the clamping force or bite force of the contact in the working state, thereby effectively improving the accuracy of the measurement result, which is closer to the actual clamping force of the contact under the current service life.

[0057] The measuring device 100 of the present technical solution is used to measure the clamping force or bite force of the switch contact. The measuring device 100 is provided with a bearing structure 1, which is a structural support component of the measuring device 100 and is used to support and install a contact finger module 2 and a transmission structure 3. The contact finger module 2 includes a first contact finger 21 and a second contact finger 22. The second contact finger 22 is provided on the bearing structure 1, and the first contact finger 21 can be movably provided relative to the second contact finger 22. The transmission structure 3 is movably provided on the bearing structure 1. The transmission structure 3 includes a transmission body 31 and a sensor 32. The sensor 32 and the first contact finger 21 are both provided on the transmission body 31. The transmission body 31 can drive the first contact finger 21 to move, thereby making the measuring device 100 have a certain degree of contact force. The measuring device 100 has an initial state and a working state. In the initial state, the contact finger module 2 can be extended into the contact to be measured to avoid rigid insertion of the contact finger module 2 and the contact to be measured. In the working state, the transmission structure 3 can drive the first contact finger 21 to move, so that the first contact finger 21 and the second contact finger 22 are arranged in parallel and spaced apart, and the first contact finger 21 and the second contact finger 22 are both pressed against the contact, giving the contact an external force to expand outward. At the same time, the transmission body 31 also applies the same force to the sensor 32 to realize the measurement of the contact clamping force, and can measure the actual clamping force of the contact under the current life, so as to accurately judge the current usage status of the contact, facilitate the operation of the operation and maintenance personnel, and improve work efficiency.

[0058] In one embodiment, the transmission body 31 includes a linkage module 311 and a locking module 312. The linkage module 311 is movably arranged on the supporting structure 1, and the first contact finger 21 and the sensor 32 are arranged on the linkage module 311; the locking module 312 is arranged on the supporting structure 1 and movably abuts against the end of the linkage module 311 away from the first contact finger 21.

[0059] In this embodiment, as shown in Figures 1 to 3, the transmission body 31 includes a linkage module 311 and a locking module 312. The linkage module 311 is movably arranged on the supporting structure 1, and the first contact finger 21 is connected to the linkage module 311. The locking module 312 is arranged on the supporting structure 1 and movably abuts against the linkage module 311. It can be understood that the linkage module 311 is the above-mentioned execution component, and the locking module 312 is the above-mentioned adjustment component. The locking module 312 is arranged on the bearing structure 1. The measurement personnel can operate the locking module 312 to achieve the abutment or separation of the locking module 312 and the linkage module 311, thereby realizing the transition of the linkage module 311 between the working state and the initial state. The linkage module 311 is used to realize the transmission of motion, such as a connecting rod mechanism or a gear set mechanism, to transmit the motion from the locking module 312 to the first contact finger 21, and the linkage module 311 can also apply pressure to the sensor 32 while transmitting the motion to measure the clamping force of the contact.

[0060] On the one hand, the locking module 312 is used to control the first contact finger 21 through the operation of the measurement personnel. On the other hand, the locking module 312 is used to lock the linkage module 311 in the working state, that is, when the first contact finger 21 and the second contact finger 22 remain parallel and spaced apart, so that the position of the first contact finger 21 is fixed, so that the first contact finger 21 on the linkage module 311 continues to press against the contact, and the linkage module 311 continues to apply pressure to the sensor 32 to obtain the clamping force of the contact.

[0061] The locking module 312 can be elastically locked or snap-on locked, which is not limited here.

[0062] In one embodiment, the linkage module 311 includes a connecting rod 3111, a linkage block 3112 and an elastic member 3113. The first contact finger 21 is provided on the connecting rod 3111, the connecting rod 3111 is rotatably provided on the supporting structure 1, and a rotation connection 311a is formed on the connecting rod 3111. The sensor 32 is provided on the linkage block 3112, the linkage block 3112 is connected to the connecting rod 3111, and the locking module 312 is movably abutted against the linkage block 3112. One end of the elastic member 3113 is connected to the supporting structure 1, and the other end of the elastic member 3113 is connected to the connecting rod 3111, and an elastic connection 311b is formed on the connecting rod 3111; wherein, the rotation connection 311a is located between the first contact finger 21 and the linkage block 3112, and the elastic connection 311b is located between the first contact finger 21 and the rotation connection 311a.

[0063] In this embodiment, as shown in Figures 1 and 2, the connecting rod 3111 and the linkage block 3112 are connected and arranged so that the connecting rod 3111 and the linkage block 3112 form a complete linkage mechanism, wherein the connecting rod 3111 is rotatably provided on the supporting structure 1, the first contact finger 21 is connected to one end of the connecting rod 3111 away from the linkage block 3112, and a rotation connection 311a is formed on the connecting rod 3111, so that the rotation connection 311a is located between the first contact finger 21 and the linkage block 3112.

[0064] It can be understood that the rotating connection 311a is located between the first contact finger 21 and the linkage block 3112, and the locking module 312 can movably abut against the end of the linkage block 3112 away from the connecting rod 3111, so that when the locking module 312 abuts the linkage block 3112, the connecting rod 3111 can rotate around the rotating connection 311a, so that the first contact finger 21 moves away from the second contact finger 22, and the first contact finger 21 and the second contact finger 22 remain in a parallel and spaced state, thereby forming a connecting rod mechanism that can transmit motion to the first contact finger 21, so as to efficiently and accurately transmit the motion of the locking module 312 to the first contact finger 21, and enable the measuring device 100 to flexibly switch between the initial state and the working state.

[0065] In this embodiment, the linkage module 311 also includes an elastic member 3113, one end of the elastic member 3113 is connected to the connecting rod 3111, and the other end extends away from the connecting rod 3111 and is connected to the supporting structure 1, and an elastic connection 311b is formed at the connection between the elastic member 3113 and the connecting rod 3111, so that the elastic connection 311b is located between the first contact finger 21 and the rotation connection 311a.

[0066] It can be understood that when the locking module 312 presses against the linkage block 3112 and pushes the connecting rod 3111 to rotate around the rotating connection 311a, the connecting rod 3111 moves in a direction opposite to the pressing direction of the locking module 312 on the side of the rotating connection 311a away from the linkage block 3112. At this time, the elastic member 3113 can buffer and limit the connecting rod 3111 to ensure that the first contact finger 21 and the second contact finger 22 have a relatively fixed position relationship and avoid excessive displacement of the connecting rod 3111, which may cause damage to the internal structure of the measuring device 100.

[0067] In another embodiment of the present application, the connecting rod 3111 is hingedly connected to the supporting structure 1 so that the connecting rod 3111 can rotate around the rotating connection 311a. The supporting structure 1 is provided with a rotating column, and the connecting rod 3111 is provided with a rotating hole at the rotating connection 311a, so that the rotating column is limited in the rotating hole, and the connecting rod 3111 rotates around the rotating column.

[0068] In one embodiment, the supporting structure 1 is formed with a mounting surface 11, the second contact finger 22 is arranged on the mounting surface 11, and a support platform 12 is provided near the mounting surface 11 and the second contact finger 22. The support platform 12 extends from the mounting surface 11 to the direction of the connecting rod 3111, and the connecting rod 3111 is rotated to abut or hinged to the support platform 12 so that the connecting rod 3111 can rotate around the support platform 12.

[0069] In this embodiment, as shown in Figure 1, the supporting structure 1 is formed with a mounting platform, and a mounting surface 11 is formed on the side of the mounting platform facing the linkage module 311, so that the second contact finger 22 is arranged on the mounting surface 11, and the second contact finger 22 extends in a direction away from the supporting structure 1. A support platform 12 is also provided on the mounting surface 11, and the extension direction of the support platform 12 is perpendicular to the mounting surface 11, so that the connecting rod 3111 can rotate and abut or be hinged to the support platform 12.

[0070] It can be understood that the mounting surface 11 is used to mount the second contact finger 22 and the support platform 12, and the second contact finger 22 and the support platform 12 are adjacently arranged, and the position of the second contact finger 22 is fixed relative to the bearing structure 1, so that the first contact finger 21 can move relative to the second contact finger 22 and the mounting platform, and the support platform 12 extends from the mounting surface 11 in the direction of the connecting rod 3111, so that the connecting rod 3111 is rotatably abutted against the support platform 12 at the rotating connection 311a, and through the two-way limiting action of the elastic member 3113 and the locking module 312, the rotational connection between the support platform 12 and the connecting rod 3111 is also relatively tight and stable; at the same time, the connecting rod 3111 and the support platform 12 at one end away from the mounting surface 11 can also be hingedly connected to realize the rotation of the connecting rod 3111 relative to the support platform 12. Such an arrangement can reduce the use of the elastic member 3113, improve the structural compactness of the measuring device 100, and simplify the structure of the measuring device 100.

[0071] In another embodiment of the present application, the supporting structure 1 is provided with a clearance groove, which is arranged adjacent to the mounting platform, and the linkage block 3112 is connected to the connecting rod 3111 along the extension direction of the support platform 12, and partially extends into the clearance groove, so that the overall structure of the linkage module 311 and the supporting structure 1 have a smaller gap, effectively improving the overall structural compactness of the measuring device 100, reducing the overall volume of the measuring device 100, and improving the portability and storability of the measuring device 100.

[0072] In one embodiment, the support platform 12 is configured with a cross-sectional area gradually decreasing from one end of the mounting surface 11 to the end abutting against the connecting rod 3111; the connecting rod 3111 is provided with a limiting groove 311c corresponding to the support platform 12, and the end of the support platform 12 away from the mounting surface 11 abuts against the bottom wall of the limiting groove 311c.

[0073] It can be understood that, as shown in Figure 1, the support platform 12 is configured to have a cross-sectional area that gradually decreases from one end of the mounting surface 11 to the end that abuts against the connecting rod 3111, so that the support platform 12 abuts against the connecting rod 3111 through a relatively sharp corner. At the same time, the connecting rod 3111 is provided with a limiting groove 311c corresponding to the support platform 12, and the sharp corner of the support platform 12 abuts against the bottom wall of the limiting groove 311c. At the same time, the limiting groove 311c forms a pointed bottom groove with a gradually changing cross-sectional area corresponding to the support platform 12. Specifically, Specifically, the limiting groove 311c is arranged with a cross-sectional area gradually decreasing from one end adjacent to the mounting surface 11 to the end away from the mounting surface 11, so that the support platform 12 is installed in coordination with the bottom wall of the limiting groove 311c. This arrangement effectively improves the centering performance of the connecting rod 3111 and the linkage module 311 when rotating around the support platform 12, improves the transmission accuracy of the linkage module 311, and the relative position accuracy of the first contact finger 21 and the second contact finger 22, thereby effectively improving the accuracy of measuring the contact clamping force.

[0074] In one embodiment, the locking module 312 includes an adjustment unit 3121 and a limiting column 3122. The adjustment unit 3121 is arranged on the supporting structure 1 and is connected to the limiting column 3122. The limiting column 3122 is movably arranged on the supporting structure 1. The adjustment unit 3121 is used to adjust the limiting column 3122 to abut against or away from the linkage module 311 to realize the transition between the working state and the initial state of the measuring device 100.

[0075] In this embodiment, as shown in Figures 1 and 3, the adjustment unit 3121 is arranged on the supporting structure 1 and is connected to the limiting column 3122. The limiting column 3122 is movably arranged on the supporting structure 1, and the axial direction of the limiting column 3122 is the same as the extension direction of the support platform 12.

[0076] It is understood that the adjustment unit 3121 is used to adjust the movement of the limit column 3122 along its axis so that the limit column 3122 can abut or move away from the linkage block 3112. When the adjustment unit 3121 adjusts the limit column 3122 to abut against the linkage block 3112, the linkage block 3112 drives the connecting rod 3111 to rotate around the support platform 12, and keeps the first contact finger 21 and the second contact finger 22 parallel and spaced apart, so that the measuring device 100 enters the working state. At this time, the sensor 32 on the linkage block 3112 is subjected to force and begins to detect the clamping force. When the adjustment unit 3121 adjusts the limit column 3122 away from the linkage block 3112, the linkage block 3112 and the connecting rod 3111 are not subjected to external force, and the measuring device 100 is now in the initial state. The limit column 3122 can effectively connect the adjustment unit 3121 with the linkage module 311, thereby transmitting motion to the linkage module 311 and changing the state of the first contact finger 21.

[0077] In another embodiment of the present application, the supporting structure 1 is further provided with an adjusting block, which can be slidably arranged on the main body of the supporting structure 1, and the axial direction of the limiting column 3122 is the same as the sliding direction of the adjusting block. The adjusting block is provided with a through hole, and the limiting column 3122 is passed through the through hole, and one end of the limiting column 3122 is connected to the adjusting unit 3121 and is limitedly abutted on the adjusting block, and the other end portion of the limiting column 3122 passes through the through hole and abuts against the linkage block 3112; by sliding the adjusting block along the axial direction of the limiting column 3122, the position of the limiting column 3122 abutting against the linkage block 3112 can be adjusted, thereby adjusting the position of the linkage block 3112 and the connecting rod 3111, and then adjusting the spacing between the first contact finger 21 and the second contact finger 22, so that the measuring device 100 can adapt to contacts of different specifications, thereby improving the versatility and applicability of the measuring device 100.

[0078] In one embodiment, the adjustment unit 3121 includes an elastic sheet 3123 and a locking member 3124, one end of the elastic sheet 3123 is connected to the supporting structure 1, and the other end of the elastic sheet 3123 is connected to the limiting column 3122, and the locking member 3124 is movably provided on the supporting structure 1 and movably abuts against the elastic sheet 3123.

[0079] In this embodiment, as shown in Figure 3, one end of the elastic sheet 3123 is connected to the supporting structure 1, and the other end is connected to the end of the limiting column 3122 away from the abutment against the linkage block 3112. The locking member 3124 is movably provided on the supporting structure 1, and the locking member 3124 can movably abut against the elastic sheet 3123.

[0080] It can be understood that the locking member 3124 is rotatably provided on the supporting structure 1, so that the locking member 3124 realizes the change of the state of the elastic sheet 3123 by the movable abutment with the elastic sheet 3123. When the locking member 3124 is tightly abutted against the elastic sheet 3123, the elastic sheet 3123 is also tightly abutted against the linkage block 3112 through the limiting column 3122, so that the measuring device 100 enters the working state; when the locking member 3124 is disengaged from the elastic sheet 3123, the elastic sheet 3123 is in a relaxed state, and the limiting column 3122 is no longer abutted against the linkage block 3112. At this time, the first contact finger 21 is in a relaxed state, and the measuring device 100 enters the initial state. That is, the locking member 3124 is used to adjust the state of the linkage module 311 and the first contact finger 21 through the elastic sheet 3123, thereby changing the state of the measurement state. At the same time, the locking member 3124 also has a locking function in place, so that in the working state, the locking module 312 and the linkage module 311 remain relatively fixed, and the first contact finger 21 and the second contact finger 22 remain relatively fixed, thereby improving the safety and continuity of the detection.

[0081] In addition, the locking piece 3124 applies pressure to the elastic sheet 3123, and the elastic sheet 3123 pushes the limit column 3122 to press against the adjustment block, so that the elastic force generated by the deformation of the elastic sheet 3123 is applied to the limit column 3122, and is applied to the linkage module 311 through the limit column 3122, so that the second contact finger 22 and the first contact finger 21 remain relatively fixed. At this time, the elastic force generated by the elastic sheet 3123 is sufficient to resist the pressure of the contact on the first contact finger 21 and the second contact finger 22, effectively ensuring the normal operation of the first contact finger 21 and the second contact finger 22, so that the first contact finger 21 and the second contact finger 22 are stably pressed against the contact and the clamping force is measured by the sensor 32.

[0082] In another embodiment of the present application, the adjustment unit 3121 includes an elastic sheet 3123 and a rigid rod, one end of the rigid rod is connected to the supporting structure 1, and the other end is connected to the limiting column 3122, and one end of the rigid rod is connected to the limiting column 3122 and is also connected to the elastic sheet 3123. The elastic sheet 3123 can provide a large elastic force for the limiting column 3122 and the rigid rod, and press the linkage module 311 through the limiting column 3122, so that the first contact finger 21 and the second contact finger 22 remain relatively fixed, and have a strong reverse force to resist the contact engagement.

[0083] In one embodiment, the locking member 3124 includes a locking head 3124a and an operating rod 3124b, the locking head 3124a is rotatably connected to the supporting structure 1 and forms a rotation center 3124c, the locking head 3124a includes a locking portion 3124d and a transition portion 3124e, the distance from the transition portion 3124e to the rotation center 3124c is smaller than the distance from the locking portion 3124d to the rotation center 3124c, and the locking portion 3124d is smoothly transitionally connected to the transition portion 3124e; the operating rod 3124b is connected to the transition portion 3124e.

[0084] In this embodiment, as shown in Figures 3 and 4, the locking head 3124a is movably abutted against the elastic piece 3123, and the locking head 3124a is rotatably connected to the operating structure and forms a rotation center 3124c. The operating rod 3124b is connected to the locking head 3124a. It can be understood that the operating rod 3124b is used by the measurement personnel to operate the measuring device 100, and the operating rod 3124b drives the locking head 3124a to rotate, so that the various parts of the locking head 3124a are movably abutted against the elastic piece 3123. Specifically, the locking head 3124a includes a locking portion 3124d and a transition portion 3124e. The locking portion 3124d is used to abut the elastic piece 3123 to make the limit column 3122 press the linkage block 3112 to the greatest extent, so that the first contact finger 21 and The second contact fingers 22 remain parallel and spaced apart to enter the working state. The transition portion 3124e is used to relax the elastic sheet 3123 and enable the measuring device 100 to enter the initial state. Therefore, the distance between the locking portion 3124d and the rotation center 3124c is greater than the distance between the transition portion 3124e and the rotation center 3124c. This ensures that when the locking portion 3124d abuts the elastic sheet 3123, it can apply greater pressure to the elastic sheet 3123, thereby forcing the limiting column 3122 to press against the linkage block 3112. The smooth transition between the locking portion 3124d and the transition portion 3124e also facilitates the operator's operation of the locking member 3124 and reduces friction loss between the locking head 3124a and the elastic sheet 3123.

[0085] In one embodiment, the line connecting the rotation center 3124c to the locking portion 3124d is set at an angle to the extension direction of the operating rod 3124b; the locking head 3124a also includes a receiving portion 3124f, which is respectively connected to the transition portion 3124e and the operating rod 3124b, and the receiving portion 3124f extends in a direction away from the rotation center 3124c, and the receiving portion 3124f is used to abut the elastic sheet 3123 to receive the locking member 3124.

[0086] It can be understood that, as shown in Figure 4, the connection between the rotation center 3124c and the locking portion 3124d is set at an angle to the extension direction of the operating rod 3124b, so that when the locking portion 3124d is pressed against the elastic sheet 3123, the measuring device 100 enters the working state, and a gap is left between the operating rod 3124b and the supporting structure 1, so that after measuring the clamping force of the contact, it is convenient for the measuring personnel to pull the operating rod 3124b again to restore to the initial state, thereby improving the convenience of measurement and improving measurement efficiency.

[0087] At the same time, a storage portion 3124f is also provided on the locking head 3124a, and the storage portion 3124f extends in a direction away from the rotation center 3124c. When the measurement of the contact is completed, the operating lever 3124b can be pulled back to its position. At this time, the storage portion 3124f abuts against the elastic sheet 3123, but does not apply pressure to the elastic sheet 3123, so that the locking member 3124 is in a storage state as a whole. The setting of the storage portion 3124f can prevent the locking member 3124 from shaking at will when in the storage state, thereby effectively ensuring the safety of the measuring device 100.

[0088] This application also provides a measuring device, comprising a main body and the aforementioned measuring device 100, electrically connected to the main body. The specific structure of the measuring device 100 is similar to that of the aforementioned embodiments. Since this measuring device utilizes all the technical solutions of all the aforementioned embodiments, it at least has all the beneficial effects brought about by the technical solutions of the aforementioned embodiments, and therefore will not be further elaborated here.

[0089] It can be understood that the main body includes a power supply, a control circuit and a display meter. The power supply is electrically connected to the control circuit, the display meter 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 meter is electrically connected to the control circuit to display the actual clamping force value of the contact measured by the sensor 32.

[0090] The above description is merely an optional embodiment of the present application and does not limit the patent scope of the present application. All equivalent structural transformations made based on the concept of the present application and the contents of the present application description and drawings, or direct / indirect application in other related technical fields are included in the patent protection scope of the present application.

Claims

1. A measuring device for measuring the clamping force of a contact, wherein: The measuring device comprises: load-bearing structure; A finger contact module, the finger contact module comprising a first finger contact and a second finger contact, the second finger contact is disposed on the bearing structure, and the first finger contact is movable relative to the second finger contact; and A transmission structure, wherein the transmission structure is arranged on the bearing structure, the transmission structure comprises a transmission body and a sensor, the sensor is arranged on the transmission body, and the first contact finger is arranged on the transmission body; The transmission body drives the first contact finger to move so that the measuring device has an initial state and a working state. In the initial state, the contact finger module can extend into the contact to be measured; in the working state, the transmission structure can drive the first contact finger to move, so that the first contact finger and the second contact finger are arranged in parallel and at intervals, and are pressed against the contact, so that the clamping force of the contact can be detected by the sensor.

2. The measuring device according to claim 1, wherein: The transmission body comprises a linkage module and a locking module, the linkage module is movably arranged on the bearing structure, and the first contact finger and the sensor are arranged on the linkage module; The locking module is disposed on the bearing structure and movably abuts against an end of the linkage module away from the first contact finger.

3. The measuring device according to claim 2, wherein: The linkage module comprises: A connecting rod, the first contact finger is arranged on the connecting rod, the connecting rod is rotatably arranged on the bearing structure, and a rotating connection is formed on the connecting rod; A linkage block, the sensor is disposed on the linkage block, the linkage block is connected to the connecting rod, and the locking module is movably abutted against the linkage block; and An elastic member, one end of which is connected to the bearing structure, and the other end of which is connected to the connecting rod, and an elastic connection is formed on the connecting rod; Wherein, the rotation connection is located between the first contact finger and the linkage block, and the elastic connection is located between the first contact finger and the rotation connection.

4. The measuring device according to claim 3, wherein: The bearing structure is formed with a mounting surface, the second contact finger is arranged on the mounting surface, a support platform is arranged adjacent to the second contact finger on the mounting surface, the support platform is extended from the mounting surface to the direction of the connecting rod, and the connecting rod is rotatably connected to the support platform so that the connecting rod can rotate around the support platform.

5. The measuring device according to claim 4, wherein: The support platform is arranged with a cross-sectional area gradually decreasing from one end of the mounting surface to one end abutting against the connecting rod; The connecting rod is provided with a limiting groove corresponding to the supporting platform, and one end of the supporting platform away from the mounting surface abuts against the bottom wall of the limiting groove.

6. The measuring device according to claim 2, wherein: The locking module includes an adjustment unit and a limit column. The adjustment unit is arranged on the bearing structure and connected to the limit column. The limit column is movably arranged on the bearing structure. The adjustment unit is used to adjust the limit column to abut against or away from the linkage module to achieve the transition between the working state and the initial state of the measuring device.

7. The measuring device according to claim 6, wherein: The adjusting unit is provided with an elastic adjusting member, the elastic adjusting member is provided on the bearing structure and connected to the limiting column, and the adjusting unit is used for adjusting the limiting column through the elastic adjusting member.

8. The measuring device according to claim 7, wherein: The elastic adjustment member is a spring, and the adjustment unit includes the spring and a locking member. One end of the spring is connected to the limiting column, and the other end of the spring is movably connected to the locking member. The locking member is movably arranged on the bearing structure, and the limiting column can be adjusted by the spring to abut against or away from the linkage module.

9. The measuring device according to claim 7, wherein: The elastic adjustment member is an elastic sheet, and the adjustment unit includes the elastic sheet and a locking member. The elastic sheet is arranged on the bearing structure and connected to the limiting column. The locking member is movably arranged on the bearing structure and movably abuts against the elastic sheet to adjust the limiting column to abut against or away from the linkage module.

10. The measuring device according to claim 9, wherein: The locking member comprises a locking head and an operating rod, wherein the locking head is rotatably connected to the bearing structure and forms a rotation center, the locking head comprises a locking portion and a transition portion, the distance from the transition portion to the rotation center is smaller than the distance from the locking portion to the rotation center, and the locking portion is smoothly transitionally connected to the transition portion; The operating rod is connected to the transition portion.

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

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