Batch fastening degree measuring device for screws of electric energy meter junction box

Abstract

The invention belongs to the technical field of junction box installation and detection, and discloses an electric energy meter junction box screw batch fastening degree measuring device which comprises a placement table, a clamping assembly used for clamping an electric energy meter junction box is arranged on the placement table, a bottom plate is arranged below the placement table, and a pair of symmetrically-arranged supporting strips is fixed to the bottom plate. Connecting strips are fixed between the supporting strips. The testing mechanism is arranged above the placing table, and the testing mechanism is used for detecting the fastening degree of screws on the electric energy meter junction box; the testing mechanism comprises a bit assembly, a connecting assembly, a torque sensor and a first rotating motor used for driving the connecting assembly to rotate. According to the invention, the fastening degree of the screws on the electric energy meter junction box can be tested in sequence, the labor intensity during testing is reduced, the testing efficiency is improved, the fastening degree of the screws is represented through digital quantification through the torque sensor, and the difference of testing results caused by different judgment standards of different workers is avoided.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of junction box installation detection, and particularly relates to a device for measuring the fastening degree of junction box screws of an electric energy meter. BACKGROUND

[0002] The safe and reliable operation of an electric energy meter is directly related to the economic security and interests of users, and the fastening degree of the junction box screws is an important basis for judging whether the internal wiring of the device meets the standards. However, when the junction box of the electric energy meter is assembled, the quality of the installation by the staff is not the same, or the equipment is shaken by external forces, and some screws of the junction box may have problems such as "under-tightening" and "over-tightening". This greatly affects the accuracy and safe and stable operation of the electric energy meter, so when the screws of the junction box of the electric energy meter are installed, appropriate means should be used to detect the fastening degree of the screws.

[0003] In the prior art, when the fastening degree of the screws of the junction box of the electric energy meter is detected, most of them are manually inspected by manually holding an appropriate screwdriver in a tightening manner, and if the screwdriver does not rotate, it is considered to be fastened. The above method is to manually inspect the fastening degree of the screws, but because the judgment standards of different staff may differ, the test results also differ. SUMMARY

[0004] In view of the deficiencies of the prior art, the purpose of the present application is to provide a device for measuring the fastening degree of a batch of screws of a junction box of an electric energy meter, which solves the problem that in the prior art, the fastening degree of the screws is manually inspected, but because the judgment standards of different staff may differ, the test results also differ.

[0005] The purpose of the present application can be achieved by the following technical solutions:

[0006] The device for measuring the fastening degree of a batch of screws of a junction box of an electric energy meter comprises a placement table, a clamping assembly for clamping the junction box of the electric energy meter is arranged on the placement table, a bottom plate is arranged below the placement table, a pair of symmetrical support bars are fixed on the bottom plate, and a connecting bar is fixed between the support bars.

[0007] A testing mechanism is arranged above the placement table, and the testing mechanism is used for detecting the fastening degree of the screws on the junction box of the electric energy meter; the testing mechanism comprises a bit assembly, a connecting assembly, a torque sensor, and a first rotating motor for driving the connecting assembly to rotate, the bottom of the first rotating motor is fixed with the connecting bar, the connecting assembly is located directly below the first rotating motor, the output end of the first rotating motor is fixedly connected with the connecting assembly, the upper end of the bit assembly is detachably connected with the lower end of the connecting assembly, a slot is arranged at the end of the bit assembly away from the connecting assembly, the slot is adapted to the top of the screw, a first driving unit is arranged in the bit assembly to drive the slot end to move up and down, and the torque sensor is arranged between the bit assembly and the connecting assembly.

[0008] A calibration mechanism is arranged between the base plate and the placement table, and is used to drive the placement table to move in a horizontal plane for position adjustment.

[0009] The batch head assembly comprises a sleeve rod coaxially arranged with the first rotating motor, the sleeve rod is in the form of a hollow shell with an open lower end, a coaxially arranged sliding rod is slidingly connected in the sleeve rod, a first driving unit is installed inside the sleeve rod and connected with the sliding rod, the first driving unit is used to drive the sliding rod to move up and down, a notch is opened at the lower end of the sliding rod, and a threaded groove with opposite screw threads at the upper and lower ends is opened on the outer circumferential wall of the upper end of the sleeve rod.

[0010] The connecting assembly comprises a connecting block, the upper end of the connecting block is fixedly connected with the output end of the first rotating motor, a pair of symmetrically arranged half-cylinder sleeves are slidingly connected at the lower end of the connecting block, and the connecting block is provided with a second driving unit for driving the two half-cylinder sleeves to move away from or close to each other.

[0011] When the two half-cylinder sleeves are close to and abutted against each other, the two half-cylinder sleeves form a complete threaded sleeve, and a threaded hole is opened on the inner side wall of the threaded sleeve, which is matched with the threaded groove at the upper end of the sleeve rod.

[0012] A mounting groove coaxially arranged with the sleeve rod is opened on the lower end surface of the connecting block, a torque sensor is fixed at the bottom of the mounting groove, an input end of the torque sensor faces the sleeve rod, the input end of the torque sensor is connected with a test block, and a groove matched with the test block is opened at one end of the sleeve rod close to the connecting block.

[0013] When the groove is connected with the test block, the placement angle of the sleeve rod is unique, and when the groove is connected with the test block, the threaded groove is precisely aligned with the threaded hole.

[0014] The second driving unit comprises a pair of first sliding grooves opened on the lower end surface of the connecting block, and the two first sliding grooves are symmetrically arranged about the central axis of the sleeve rod, a pair of symmetrically arranged sliding blocks are fixed on the upper end of each half-cylinder sleeve, the sliding blocks are in one-to-one correspondence with the first sliding grooves, and the sliding blocks are located in and slidingly connected with the corresponding first sliding grooves.

[0015] A coaxially arranged first screw rod is rotatably connected in each first sliding groove, and the threaded directions of the first screw rods located on both sides of the symmetric plane of the two half-cylinder sleeves are opposite, the first screw rods pass through the two sliding blocks in the corresponding first sliding grooves, and the sliding blocks are threadedly connected with the first screw rods.

[0016] A coaxially arranged shaft is fixed at any end of the first screw rod, the shaft passes through and is rotatably connected with the connecting block, a coaxially arranged gear is fixedly sleeved on the shaft, the gears are intermeshed, and the threaded directions of the same ends of the two first screw rods are opposite.

[0017] The gear away from the rotating shaft is provided with a circular hole slot coaxially arranged at one end, and an extension rod coaxially arranged is fixed in the circular hole slot, the other end of the extension rod is fixed with a handle, the handle can rotate in a plane parallel to the gear surface, a spring is sleeved on the extension rod, one end of the spring is fixed with the bottom of the circular hole slot, the other end of the spring is fixed with the handle, and the spring is always in a stretched state, and the tooth surface on the side of the two gears close to the handle is provided with a clamping groove.

[0018] When the two half circular sleeves are attached, the clamping grooves on the two gears are on the same axis and are connected through the two clamping grooves, and the two ends of the handle are clamped in the two clamping grooves respectively.

[0019] The first driving unit comprises a second rotating motor fixedly installed in the sleeve rod, the second rotating motor is located at the upper end of the sliding rod, a second screw rod vertically downward is arranged at the output end of the second rotating motor, the second screw rod is coaxially arranged with the sliding rod, the upper end of the sliding rod is sleeved on the second screw rod and is threadedly connected with the second screw rod, a plurality of second sliding grooves are arranged in the circumferential wall of the sliding rod, the second sliding grooves are coaxially arranged with the sliding rod, and a convex strip corresponding to the second sliding groove is arranged on the inner wall of the sleeve rod.

[0020] The clamping assembly comprises a third sliding groove arranged on the placement table, a pair of symmetrically arranged clamping plates are slidably connected in the third sliding groove, the upper ends of the clamping plates are arranged outside the third sliding groove, a third screw rod coaxially arranged is rotatably connected in the third sliding groove, the third screw rod penetrates through the clamping plates and is threadedly connected with the clamping plates, the screw directions of the two ends of the third screw rod are opposite, and a third rotating motor for driving the third screw rod to rotate is arranged on the placement table.

[0021] The calibration mechanism comprises a pair of first sliding rails fixed on the bottom plate, the two first sliding rails are coaxially arranged, a sliding table is slidably connected between the two first sliding rails, a fourth screw rod coaxially arranged is arranged between the two first sliding rails, the sliding table is sleeved on the fourth screw rod and is threadedly connected with the fourth screw rod, and a fourth rotating motor for driving the fourth screw rod to rotate is arranged on the bottom plate.

[0022] A pair of symmetrically arranged second sliding rails are arranged on the sliding table, the central axes of the second sliding rails are vertically arranged with the central axes of the first sliding rails, the placement table is slidably connected with the second sliding rails, a fifth screw rod is arranged between the two second sliding rails, the lower end of the placement table is sleeved on the fifth screw rod and is threadedly connected with the fifth screw rod, and a fifth rotating motor is installed on the sliding table, and the output end of the fifth rotating motor is connected with the fifth screw rod.

[0023] The beneficial effects of the present application are as follows:

[0024] 1. The application can test the screw fastening degree on the electric energy meter junction box in sequence through the cooperation of the placing table, clamping assembly, calibration mechanism and testing mechanism, reduces the labor intensity during testing, improves the testing efficiency, and the torque sensor quantifies the screw fastening degree by digital, avoiding the difference of test results caused by different judgment standards of different workers;

[0025] 2. The batch head assembly and the connecting assembly are detachably connected, which is convenient for selecting the batch head assembly with the corresponding size slot according to the different specifications of the measured screw;

[0026] Meanwhile, the detachable connection between the connecting assembly and the batch head assembly in the application adopts a threaded connection mode instead of a latch type, avoiding the stress concentration in a specific area caused by the latch type connection, increasing the uncertainty of the torque sensor measurement, and the uneven stress may reduce the stability of the latch connection, easily causing movement or looseness, affecting the reliability and accuracy of the test results; the threaded groove is formed on the outer side wall of the sleeve rod, the threaded groove is opposite at both ends, and the sleeve rod and the connecting assembly are threadedly connected to form self-locking, which can improve the stability of the connection and improve the accuracy of the test;

[0027] 3. The application is characterized by the cooperation of the connecting block, the semicircular sleeve, the sliding block, the first screw rod, the gear, the telescopic rod, the handle, the spring and the clamping groove, which improves the guiding property of the semicircular sleeve during movement, and through the rotation of the handle, the purpose of synchronously driving the two semicircular sleeves to approach or move away from each other is achieved;

[0028] When the two semicircular sleeves are attached, the two clamping grooves are connected through, at this time, the handle is loosened, the spring is elastically deformed, the handle is inserted into the two clamping grooves, the two gears are locked through the limiting action of the handle, the rotation of the first screw rod is prevented, and the close contact of the two semicircular sleeves caused by the movement of the sliding block during testing is avoided. BRIEF DESCRIPTION OF DRAWINGS

[0029] In order to more clearly illustrate the technical solutions in the embodiments of the application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiment or prior art description, and obviously, other drawings can be obtained by those skilled in the art without creative labor.

[0030] Figure 1 is the overall structure schematic diagram of the application;

[0031] Figure 2 is the testing mechanism structure schematic diagram of the application;

[0032] Figure 3 is the first rotating motor part schematic diagram of the application;

[0033] Figure 4 is the structure diagram of the bit head assembly of the present application;

[0034] Figure 5 is the internal structure diagram of the bit head assembly of the present application;

[0035] Figure 6 is the structure diagram of the half-round sleeve part of the present application;

[0036] Figure 7 is the structure diagram of the connecting block part of the present application;

[0037] Figure 8 is the structure diagram of the spring and gear part of the present application;

[0038] Figure 9 is the structure diagram of the calibration mechanism and placement table part of the present application. DETAILED DESCRIPTION

[0039] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative efforts belong to the scope of protection of the present application.

[0040] As shown in Figures 1 to 9 the screw fastening degree measuring device for the electric energy meter junction box, comprising:

[0041] a placement table 1, the placement table 1 is provided with a clamping assembly for clamping the electric energy meter junction box, a bottom plate 2 is arranged below the placement table 1, a pair of symmetrical support strips are fixed on the bottom plate 2, and a connecting strip 3 is fixed between the support strips;

[0042] a test mechanism, the test mechanism is arranged above the placement table 1, and the test mechanism is used for detecting the screw fastening degree of the electric energy meter junction box; the test mechanism comprises a bit head assembly 4, a connecting assembly 5, a torque sensor 6 and a first rotating motor 7 used for driving the connecting assembly 5 to rotate, the bottom of the first rotating motor 7 is fixed with the connecting strip 3, the connecting assembly 5 is located directly below the first rotating motor 7, the output end of the first rotating motor 7 is fixedly connected with the connecting assembly 5, the upper end of the bit head assembly 4 is detachably connected with the lower end of the connecting assembly 5, a notch 421 adapted to the top of the screw is arranged at the end of the bit head assembly 4 away from the connecting assembly 5, a first driving unit is arranged in the bit head assembly 4 and used for driving the notch 421 to move up and down, and the torque sensor 6 is arranged between the bit head assembly 4 and the connecting assembly 5;

[0043] The calibration mechanism 8 is arranged between the base plate 2 and the placing table 1, and is used to drive the placing table 1 to move in the horizontal plane for position adjustment.

[0044] Preferably, the batch head assembly 4 is provided in plurality, and the plurality of batch head assemblies 4 are provided with different specifications of the notches 421, so that the appropriate batch head assembly 4 can be selected according to the required detection specification of the screw, and then connected with the connecting assembly 5.

[0045] The terminal box of the electric energy meter to be tested is placed on the placing table 1 and clamped and fixed by the clamping assembly. Then, the placing table 1 is driven to move by the calibration mechanism 8, and the terminal box of the electric energy meter is driven to move by the placing table 1 for position adjustment, so that any screw on the terminal box of the electric energy meter moves below the batch head assembly 4. Then, the notch 421 end of the batch head assembly 4 is driven to move downward by the first driving unit, so that the notch 421 end of the batch head assembly 4 is clamped with the upper end of the screw to be detected. Then, the first rotating motor 7 is started to drive the connecting assembly 5 to rotate, the connecting assembly 5 drives the batch head assembly 4, the batch head assembly 4 rotates and applies a torque to the screw, and the torque sensor 6 is used to measure the torque applied to the screw. When the measured torque is greater than the standard range, it indicates that the screw is over-tightened. When the measured torque is less than the standard range, it indicates that the screw is not tightened enough.

[0046] When the detection of any screw is completed, the notch 421 end of the batch head assembly 4 is driven to move upward by the first driving unit. Then, the terminal box of the electric energy meter is adjusted again by the calibration mechanism 8 for position adjustment, so that another screw to be detected moves below the batch head assembly 4 for the tightness test.

[0047] The above process is repeated, and the tightness of the screws on the terminal box of the electric energy meter can be tested in sequence, which reduces the labor intensity during the test and improves the test efficiency. Moreover, the tightness of the screw is quantitatively represented by the torque sensor 6, which avoids the difference in test results caused by different judgment standards of different workers.

[0048] In order to realize the detachable connection between the batch head assembly 4 and the connecting assembly 5, and facilitate the selection of the batch head assembly 4 with different specifications of the notches 421 according to different specifications of the screws, the batch head assembly 4 comprises a sleeve rod 41 coaxially arranged with the first rotating motor 7. The sleeve rod 41 is in the form of a hollow shell with an open lower end. A sliding rod 42 coaxially arranged is clamped and connected in the sleeve rod 41. A first driving unit is installed in the sleeve rod 41 and connected with the sliding rod 42. The first driving unit is used to drive the sliding rod 42 to move up and down. The notch 421 is arranged at the lower end of the sliding rod 42. Thread grooves 411 with opposite screw threads at the upper and lower ends are arranged on the outer circumferential wall of the upper end of the sleeve rod 41.

[0049] The connecting assembly 5 comprises a connecting block 51, the upper end of the connecting block 51 is fixedly connected with the output end of the first rotating motor 7, the lower end of the connecting block 51 is slidably connected with a pair of symmetrical half circular sleeves 52, and the connecting block 51 is provided with a second driving unit for driving the two half circular sleeves 52 to move away from or close to each other;

[0050] When the two half circular sleeves 52 move close to each other and are attached, the two half circular sleeves 52 form a complete threaded sleeve, and the inner side wall of the threaded sleeve is provided with a threaded hole matched with the threaded groove 411 on the upper end of the sleeve rod 41;

[0051] When the bit assembly 4 with different specifications of the slot 421 needs to be replaced, the second driving unit is first used to drive the two half circular sleeves 52 to move away from each other, so that the two half circular sleeves 52 are separated from the sleeve rod 41, and the bit assembly 4 is separated from the connecting assembly 5; then the bit assembly 4 with the required specification is replaced, the upper end of the newly replaced bit assembly 4 is inserted between the two half circular sleeves 52, and then the second driving unit is used to drive the two half circular sleeves 52 to move close to each other, so that the two half circular sleeves 52 are attached to form a complete threaded sleeve, and are connected with the threaded groove 411 on the upper end of the sleeve rod 41 through the threaded hole, thereby achieving the detachable connection between the bit assembly 4 and the connecting assembly 5, and facilitating the selection of the bit assembly 4 with different specifications of the slot 421 according to different specifications of the screw;

[0052] Meanwhile, in the present application, the connecting assembly 5 and the bit assembly 4 are connected in a threaded manner to achieve detachable connection, rather than a pin type detachable connection. The pin type connection has the following defects in the present application: due to the limited and uneven distribution of the contact area between the pin and the sleeve rod 41, the stress may be concentrated in a specific area, increasing the uncertainty of the torque sensor 6 measurement; uneven stress may reduce the stability of the pin connection, causing movement or loosening, affecting the reliability and accuracy of the test results; in order to reduce the impact of uneven stress caused by the pin type connection, a plurality of pin grooves uniformly distributed on the sleeve rod 41 are provided, and a plurality of elastic elements corresponding to the pin grooves are provided on the connecting unit; during installation, each pin needs to be inserted into the corresponding pin groove in the sleeve rod 41 in time, and during disassembly, each pin needs to be pulled out of the pin groove at the same time, which causes certain difficulty in disassembly and installation;

[0053] In the present application, the threaded groove 411 is formed on the outer circumferential wall of the upper end of the sleeve rod 41, and the threaded spiral directions of the two ends of the threaded groove 411 are opposite, so that the sleeve rod 41 and the connecting assembly 5 are connected in a threaded manner to form a self-locking structure, which can improve the stability of the connection and the accuracy of the test.

[0054] In order to ensure that the torque sensor 6 can accurately perceive and measure the torque size applied on the screw, the lower end surface of the connecting block 51 is provided with a mounting groove coaxial with the sleeve rod 41, the bottom of the torque sensor 6 is fixed with the mounting groove, the input end of the torque sensor 6 is directed towards the sleeve rod 41, and the input end of the torque sensor 6 is connected with a test block 61, and the end of the sleeve rod 41 close to the connecting block 51 is provided with a groove 412 matched with the test block 61;

[0055] The angle of the sleeve rod 41 is unique when the groove 412 is clamped with the test block 61, and the threaded groove 411 is accurately aligned with the threaded hole when the groove 412 is clamped with the test block 61;

[0056] Preferably, the test block 61 can be provided in a ladder shape to ensure that the angle of the sleeve rod 41 is unique when the groove 412 is clamped with the test block 61; through the clamping cooperation of the test block 61 and the groove 412, it is ensured that the torque sensor 6 can accurately perceive and measure the torque size applied on the screw; at the same time, when the bit assembly 4 is installed, it is convenient to determine the angle of the sleeve rod 41, so that the threaded groove 411 is accurately aligned with the threaded hole.

[0057] Preferably, a protective cover 10 can be provided outside the first rotating motor 7, the protective cover 10 is fixed with the connecting strip 3, and the protective cover 10 is provided with a display screen 11, and the display screen 11 is used to display the measured torque value of the torque sensor 6.

[0058] In order to facilitate the connecting block 51 to drive the two half-circular sleeves 52 to rotate synchronously, and at the same time improve the guiding property of the two half-circular sleeves 52 during movement, the second driving unit includes a pair of first sliding grooves 511 opened on the lower end surface of the connecting block 51, and the two first sliding grooves 511 are symmetrically placed about the center axis of the sleeve rod 41, and the upper end of the half-circular sleeve 52 is fixed with a pair of symmetrically placed sliding blocks 53, the sliding block 53 corresponds to the first sliding groove 511 one by one, and the sliding block 53 is located in the corresponding first sliding groove 511 and is in sliding clamping connection with the first sliding groove 511; when the first rotating motor 7 drives the connecting block 51 to rotate, the connecting block 51 can make the two half-circular sleeves 52 rotate synchronously with the connecting block 51 through the clamping cooperation of the first sliding groove 511 and the sliding block 53, and at the same time, the setting of the first sliding groove 511 improves the guiding property of the two half-circular sleeves 52 during movement.

[0059] In order to facilitate the synchronous drive of the two half-cylinder sleeves 52 to move close to or away from each other, the first screw rod 54 is coaxially arranged in the first sliding groove 511, and the screw threads of the first screw rod 54 on both sides of the symmetry plane of the two half-cylinder sleeves 52 are in opposite states. The first screw rod 54 penetrates through the two sliding blocks 53 in the corresponding first sliding groove 511, and the sliding block 53 is in threaded connection with the first screw rod 54. At the same time, the two first screw rods 54 are rotated, the first screw rod 54 drives the sliding block 53 to be in threaded transmission, and the screw threads of the two ends of any first screw rod 54 are opposite. When any first screw rod 54 is rotated, the two sliding blocks 53 on the first screw rod 54 can be driven to move close to or away from each other. At the same time, the arrangement of the two first screw rods 54 improves the connection stability between the half-cylinder sleeve 52 and the connecting block 51, avoids loosening between the connecting block 51 and the half-cylinder sleeve 52 during the rotation of the connecting block 51, and avoids causing loosening between the connecting assembly 5 and the bit assembly 4.

[0060] In the above process, the synchronous rotation of the two first screw rods 54 is required, and the two sliding blocks 53 at both ends of any half-cylinder sleeve 52 are required to move in the same direction. In order to solve the above problems, a rotating shaft is fixed at any end of the first screw rod 54 and coaxially arranged. The rotating shaft penetrates through the connecting block 51 and is in rotating connection with the connecting block 51. A gear 55 is fixedly sleeved on the rotating shaft and coaxially arranged. The two gears 55 are in meshing with each other, and the screw threads of the same ends of the two first screw rods 54 are opposite.

[0061] When any gear 55 is rotated, the meshing between the two gears 55 enables the two gears 55 to rotate synchronously and reversely, and the arrangement of the opposite screw threads of the same ends of the two first screw rods 54 ensures that the first screw rod 54 rotates synchronously and the sliding blocks 53 at both ends of any half-cylinder sleeve 52 move in the same direction.

[0062] During the test, when the connecting block 51 is rotated, the sliding block 53 in the first sliding groove 511 will have a tendency to move to both ends of the first sliding groove 511 under the action of centrifugal force, causing the rotation of the first screw rod 54 and the movement of the sliding block 53, and further causing the loosening of the two half-cylinder sleeves 52. In order to facilitate the rotation of the gear 55 and selectively lock the two half-cylinder sleeves 52 after being fitted, a circular hole slot coaxially arranged is formed at one end of any gear 55 away from the rotating shaft. A telescopic rod 56 coaxially arranged is fixed in the circular hole slot. A handle 57 is fixed at the other end of the telescopic rod 56. The handle 57 can rotate in a plane parallel to the tooth surface of the gear 55. A spring 58 is sleeved on the telescopic rod 56. One end of the spring 58 is fixed to the bottom of the circular hole slot, and the other end of the spring 58 is fixed to the handle 57. The spring 58 is always in a stretched state. A clamping groove 551 is formed on the tooth surface of the side of the two gears 55 close to the handle 57.

[0063] When the two half-cylinder sleeves 52 are attached, the clamping grooves 551 between the two half-cylinder sleeves 52 are connected through, at this time, the handle 57 is loosened, the spring 58 is pulled by the spring force, the handle 57 is pulled close to the gear 55, the handle 57 is inserted into the two clamping grooves 551, the two gears 55 are locked by the limiting action of the handle 57, the rotation of the first screw 54 is prevented, and the close attachment of the two half-cylinder sleeves 52 is avoided during the test process.

[0064] When the two half-cylinder sleeves 52 are attached, the clamping grooves 551 between the two half-cylinder sleeves 52 are connected through, at this time, the handle 57 is loosened, the spring 58 is pulled by the spring force, the handle 57 is pulled close to the gear 55, the handle 57 is inserted into the two clamping grooves 551, the two gears 55 are locked by the limiting action of the handle 57, the rotation of the first screw 54 is prevented, and the close attachment of the two half-cylinder sleeves 52 is avoided during the test process.

[0065] When the two half-cylinder sleeves 52 are attached, the clamping grooves 551 between the two half-cylinder sleeves 52 are connected through, at this time, the handle 57 is loosened, the spring 58 is pulled by the spring force, the handle 57 is pulled close to the gear 55, the handle 57 is inserted into the two clamping grooves 551, the two gears 55 are locked by the limiting action of the handle 57, the rotation of the first screw 54 is prevented, and the close attachment of the two half-cylinder sleeves 52 is avoided during the test process.

[0066] In order to drive the head assembly 4 to move up and down, the first driving unit includes a second rotating motor 43 fixedly installed in the sleeve rod 41, the second rotating motor 43 is located at the upper end of the sliding rod 42, the output end of the second rotating motor 43 is provided with a second screw 44 placed vertically downward, the second screw 44 is coaxially placed with the sliding rod 42, the sliding rod 42 is sleeved on the second screw 44 and is threadedly connected with the second screw 44, a plurality of second sliding grooves 422 are evenly distributed on the wall of the sliding rod 42, the second sliding grooves 422 are coaxially placed with the sliding rod 42, the inner wall of the sleeve rod 41 is provided with a convex strip 413 corresponding to the second sliding grooves 422, and the convex strip 413 is slidably connected with the second sliding grooves 422; the second rotating motor 43 drives the second screw 44 to rotate, the second screw 44 is threadedly connected with the sliding rod 42, and the sliding rod 42 is controlled to move up and down.

[0067] In order to facilitate clamping and fixing the electric energy meter terminal box, prevent detection error caused by shaking of the electric energy meter terminal box during screw fastening degree test, the clamping assembly includes a third sliding groove opened on the placing table 1, a pair of symmetrically placed clamping plates 91 are slidably connected in the third sliding groove, the upper ends of the clamping plates 91 extend out of the third sliding groove, a third screw 92 is coaxially placed and is rotatably connected in the third sliding groove, the third screw 92 penetrates through the clamping plates 91 and is threadedly connected with the clamping plates 91, the screw directions of the third screw 92 at both ends are opposite, and the placing table 1 is provided with a third rotating motor 93 for driving the third screw 92 to rotate;

[0068] By starting the third rotating motor 93 to drive the third screw 92, the third screw 92 drives the two clamping plates 91 to approach or move away from each other, and during testing, the two clamping plates 91 are used to stably clamp the electric energy meter terminal box.

[0069] In order to facilitate the adjustment of the position of the placement table 1, and to move the screws on the electric energy meter terminal box to the testing mechanism one by one for detection, the calibration mechanism 8 comprises a pair of first sliding rails 81 fixed to the bottom plate 2, the two first sliding rails 81 are coaxially arranged, a sliding table 82 is arranged between the two first sliding rails 81 and is slidably connected, a fourth screw 83 is arranged between the two first sliding rails 81 and is coaxially arranged, the sliding table 82 is sleeved on the fourth screw 83 and is threadedly connected therewith, and the fourth rotating motor 84 is arranged on the bottom plate 2 and is used to drive the fourth screw 83 to rotate.

[0070] A pair of second sliding rails 85 are arranged on the sliding table 82 and are symmetrically arranged, the central axis of the second sliding rail 85 is perpendicular to the central axis of the first sliding rail 81, the placement table 1 is slidably connected with the second sliding rail 85, a fifth screw 86 is arranged between the two second sliding rails 85, the lower end of the placement table 1 is sleeved on the fifth screw 86 and is threadedly connected therewith, the fifth rotating motor 87 is installed on the sliding table 82 and is connected with the fifth screw 86; by cooperation of the fourth screw 83 and the fifth screw 86, the position of the placement table 1 in the horizontal plane can be adjusted.

[0071] In the description of the present specification, the description of the terms "one embodiment", "example", "specific example" and the like means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0072] The basic principles, main features and advantages of the present application are shown and described above. It should be understood by those skilled in the art that the present application is not limited by the above embodiments, and the above embodiments and descriptions in the specification are only to illustrate the principles of the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the claimed present application.

Claims

1. A device for measuring the degree of tightening of a screw of an electricity meter terminal box, characterized in that, The utility model relates to an electric energy meter terminal box testing device, including: The placing table (1) is provided with the clamping component for clamping electric energy meter terminal box, and the bottom of placing table (1) is equipped with bottom plate (2), and the bottom plate (2) is fixed with a pair of symmetrical support strip, and the support strip is fixed with connecting strip (3) between; Test mechanism, test mechanism is set up above placing table (1), and test mechanism is used for detecting the screw fastening degree on electric energy meter terminal box;Test mechanism includes bit head assembly (4), connecting assembly (5), torque sensor (6) and be used for driving the rotation of connecting assembly (5) first rotation motor (7), and the bottom of first rotation motor (7) is fixed with connecting strip (3), and connecting assembly (5) is located directly below first rotation motor (7), and the output end of first rotation motor (7) is fixedly connected with connecting assembly (5), and the upper end of bit head assembly (4) is detachably connected with the lower end of connecting assembly (5), and the end of bit head assembly (4) away from connecting assembly (5) is provided with the notch (421) of being adapted to the top of screw, and bit head assembly (4) is provided with the first drive unit in the drive slot (421) end lifting movement, and torque sensor (6) is arranged between bit head assembly (4) and connecting assembly (5); Calibration mechanism (8) is set up between bottom plate (2) and placing table (1), and calibration mechanism (8) is used for driving placing table (1) to move in horizontal plane and carries out position adjustment.

2. The electric energy meter terminal box screwdriver torque measuring device according to claim 1, characterized in that, Bit head assembly (4) includes sleeve rod (41), and sleeve rod (41) is coaxially arranged with first rotation motor (7), and sleeve rod (41) is hollow shell with open lower end, and coaxially arranged slide rod (42) is slidably connected in sleeve rod (41), and first drive unit is installed in the inside of sleeve rod (41) and is connected with slide rod (42), and first drive unit is used for driving slide rod (42) lifting movement, and notch (421) is arranged at the lower end of slide rod (42), and the outer wall of the upper end of sleeve rod (41) is provided with the thread groove (411) of opposite screw thread direction in the upper and lower ends; Connecting assembly (5) includes connecting block (51), and the upper end of connecting block (51) is fixedly connected with the output end of first rotation motor (7), and the lower end of connecting block (51) is slidably connected with a pair of symmetrical half circular sleeves (52), and connecting block (51) is provided with the second drive unit for driving two half circular sleeves (52) to move away from each other or close to each other; When two half circular sleeves (52) close to each other and adhere, two half circular sleeves (52) form complete thread sleeve, and the inner wall of thread sleeve is provided with the screw hole of being adapted to the thread groove (411) of the upper end of sleeve rod (41).

3. The electric energy meter terminal box screwdriver torque measuring device according to claim 2, characterized in that, The lower end surface of connecting block (51) is provided with the installation slot of being coaxially arranged with sleeve rod (41), and the bottom of torque sensor (6) is fixed with the installation slot, and the input end of torque sensor (6) is towards sleeve rod (41), and the input end of torque sensor (6) is connected with test block (61), and the end of sleeve rod (41) close to connecting block (51) is provided with the groove (412) of being adapted to test block (61); The angle of the sleeve rod (41) is unique when the groove (412) is clamped with the test block (61), and the threaded groove (411) is accurately aligned with the threaded hole when the groove (412) is clamped with the test block (61).

4. The electric energy meter terminal box screwdriver torque measuring device according to claim 3, characterized in that, The second driving unit comprises a pair of first sliding grooves (511) opened on the lower end face of the connecting block (51), and the two first sliding grooves (511) are symmetrically arranged about the central axis of the sleeve rod (41). The upper end of each half-circular sleeve (52) is fixedly connected with a pair of symmetrically arranged sliding blocks (53). The sliding block (53) corresponds to the first sliding groove (511), and the sliding block (53) is located in the corresponding first sliding groove (511) and is in sliding connection with the first sliding groove (511).

5. The electric energy meter junction box screwdriver torque measuring device according to claim 4, wherein, The first sliding groove (511) is rotatably connected with a first screw (54) arranged on the same axis, and the first screw (54) is located on both sides of the symmetric plane of the two half-circular sleeves (52). The screwing directions of the first screw (54) on both sides of the symmetric plane are opposite. The first screw (54) penetrates through the two sliding blocks (53) in the corresponding first sliding groove (511), and the sliding block (53) is in threaded connection with the first screw (54).

6. The electric energy meter junction box screwdriver torque measuring device according to claim 5, wherein, The first screw (54) is fixedly connected with a rotating shaft arranged on the same axis at any end, and the rotating shaft penetrates through the connecting block (51) and is in rotational connection with the connecting block (51). The rotating shaft is fixedly connected with a gear (55) arranged on the same axis. The two gears (55) are in meshing connection, and the screwing directions of the two first screws (54) at the same end are opposite.

7. The electric energy meter junction box screwdriver torque measuring device according to claim 6, wherein, One end of any gear (55) away from the rotating shaft is provided with a circular hole slot arranged on the same axis, and a telescopic rod (56) arranged on the same axis is fixedly connected in the circular hole slot. The other end of the telescopic rod (56) is fixedly connected with a handle (57), and the handle (57) can rotate in a plane parallel to the tooth surface of the gear (55). A spring (58) is sleeved on the telescopic rod (56), one end of the spring (58) is fixedly connected with the bottom of the circular hole slot, the other end of the spring (58) is fixedly connected with the handle (57), and the spring (58) is always in a stretched state. The tooth surface on one side of the two gears (55) close to the handle (57) is provided with a clamping groove (551). When the two half-circular sleeves (52) are attached, the clamping grooves (551) on the two gears (55) are on the same axis and are connected through the two clamping grooves (551). The handle (57) is clamped in the two clamping grooves (551).

8. The electric energy meter junction box screwdriver torque measuring device according to claim 1, wherein, The first driving unit comprises a second rotating motor (43) fixedly installed in the sleeve rod (41). The second rotating motor (43) is located on the upper end of the sliding rod (42). The output end of the second rotating motor (43) is provided with a second screw (44) arranged vertically downward. The second screw (44) is coaxially arranged with the sliding rod (42). The sliding rod (42) is sleeved on the second screw (44) and is in threaded connection with the second screw (44). The sliding rod (42) is provided with a plurality of second sliding grooves (422) arranged in a ring and uniformly distributed on the wall. The second sliding grooves (422) are coaxially arranged with the sliding rod (42). The inner wall of the sleeve rod (41) is provided with a protrusion (413) corresponding to the second sliding groove (422). The protrusion (413) is in sliding connection with the second sliding groove (422).

9. The electric energy meter junction box screwdriver torque measuring device according to claim 1, wherein, The clamping assembly comprises a third sliding groove formed on the placing table (1), a pair of symmetrically placed clamping plates (91) are slidingly connected in the third sliding groove, the upper ends of the clamping plates (91) extend out of the third sliding groove, coaxially placed third screws (92) are rotationally connected in the third sliding groove, the third screws (92) pass through the clamping plates (91) and are threadedly connected therewith, the screw directions of the threads at the two ends of the third screws (92) are opposite, and the placing table (1) is provided with a third rotating motor (93) for driving the third screws (92) to rotate.

10. The electric energy meter junction box screwdriver torque measuring device according to claim 1, wherein, The calibration mechanism (8) comprises a pair of first sliding rails (81) fixed on the bottom plate (2), the two first sliding rails (81) are coaxially placed, a sliding table (82) is slidingly connected between the two first sliding rails (81), a fourth screw (83) is coaxially placed between the two first sliding rails (81), the sliding table (82) is threadedly connected to the fourth screw (83), and the bottom plate (2) is provided with a fourth rotating motor (84) for driving the fourth screw (83) to rotate. A pair of symmetrically placed second sliding rails (85) are arranged on the sliding table (82), the central axes of the second sliding rails (85) are vertically placed relative to the central axes of the first sliding rails (81), the placing table (1) is slidingly connected with the second sliding rails (85), a fifth screw (86) is arranged between the two second sliding rails (85), the lower end of the placing table (1) is threadedly connected to the fifth screw (86), and the sliding table (82) is provided with a fifth rotating motor (87), and the output end of the fifth rotating motor (87) is connected with the fifth screw (86).

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