Device for testing tensile resistance of box cover

Abstract

The utility model relates to the technical field of testing devices, in particular to a box cover tensile resistance testing device, a box cover is provided with a wire passing hole, the tensile resistance testing device comprises a base, a working table, a limiting mechanism and a testing mechanism, the working table is fixedly connected with the base, the limiting mechanism is arranged on the working table and used for limiting the position of the box cover, and the testing mechanism is arranged on the working table. The testing mechanism comprises a mounting seat, a pull rod, a locking nut and a loading and unloading seat, the loading and unloading seat is fixedly connected with the workbench, a loading and unloading hole matched with the locking nut is formed in the top surface of the loading and unloading seat, the mounting seat is fixedly connected with the base, the pull rod is slidably connected with the base, and a connecting section matched with the locking nut is arranged at the bottom end of the pull rod; through the design of the mounting seat, the pull rod, the locking nut and the loading and unloading seat, the locking nut can be mounted after the box cover is loaded, the box cover does not need to be lifted, the problem of alignment of the pull rod and the locking nut is solved, and the relevant customer complaint rate of falling of the box cover is predicted to be reduced by more than 80% through strict screening.

Description

TECHNICAL FIELD

[0001] The utility model relates to test device technical field especially is related to a box cover tensile test device. BACKGROUND

[0002] The box cover knock-off test method of current national standard GB / T 16824-2016 only applies 50N vertical tension, but the tension of the box cover matched with photovoltaic junction box is generally more than 80N (part of the scene needs to bear 600N or more mechanical load) in actual application. The existing test device is inconvenient to install and dismount, the installation of the tension test piece needs to lift the box cover to carry out, cannot quickly and effectively screen out the defective products with insufficient tensile property, leads to high market failure rate. According to industry statistics, the customer complaints caused by junction box problems account for 30%, wherein the box cover falling is the main failure mode, seriously affects the stability and user satisfaction of long-term operation of photovoltaic system. A high-precision, high-load test device is urgently needed to simulate the mechanical conditions under real working conditions and improve the reliability of junction box from the source. SUMMARY

[0003] The utility model solves the technical problems that: in order to overcome the test device of prior art because of inconvenient installation and dismounting, cannot quickly and effectively screen out the defective products with insufficient tensile property, lead to high market failure rate, provide a box cover tensile test device.

[0004] The utility model solves the technical problems and adopts the technical scheme that: a box cover tensile test device, the box cover has a wire hole, the tension test device includes base, workbench, limiting mechanism and test mechanism, the workbench is fixedly connected with the base, the limiting mechanism is arranged on the workbench, and the limiting mechanism is used for limiting the position of the box cover, the test mechanism includes mounting seat, pull rod, lock nut and dismounting seat, the dismounting seat is fixedly connected with the workbench, the top surface of the dismounting seat is provided with the dismounting hole matched with the lock nut, the mounting seat is fixedly connected with the base, the pull rod is slidably connected with the base, the bottom end of the pull rod is provided with the connecting section matched with the lock nut, through the design of mounting seat, pull rod, lock nut and dismounting seat, the installation of lock nut after the loading of box cover can be realized, the box cover does not need to be lifted, and the alignment problem of pull rod and lock nut is solved, through rigorous screening, the related complaint rate of box cover falling is expected to drop by more than 80%.

[0005] In order to solve the problem that the pull rod is inconvenient to pull, further including the top end of the pull rod is arranged with the handle.

[0006] In order to solve the problem of how to arrange the limiting mechanism, the limiting mechanism further comprises a driving assembly and at least one limiting assembly, the driving assembly is arranged on the working sleeve, the output end of the driving assembly is in transmission connection with the limiting assembly, the driving assembly is used for providing power for the movement of the limiting assembly, and the limiting assembly comprises a connecting seat and a limiting block.

[0007] In order to solve the problem of how to arrange the driving assembly, the driving assembly further comprises a lead screw, the lead screw is in threaded connection with the connecting seat, and the lead screw is in rotary connection with the workbench.

[0008] The limiting mechanism further comprises two limiting assemblies, the dismounting seat is located between the two limiting assemblies, the lead screw is provided with two thread segments with opposite screw directions, the thread segments of the lead screw are in one-to-one correspondence with the limiting assemblies, and the thread segments of the lead screw are in threaded connection with the connecting seats of the corresponding limiting assemblies.

[0009] The limiting block is in L-shaped structure, and the limiting block is used for limiting the upward movement of the box cover.

[0010] The driving assembly further comprises a gas cylinder, and the output end of the gas cylinder is in transmission connection with the connecting seat.

[0011] The connecting seat is in sliding connection with the workbench.

[0012] The box cover tensile test device has the advantages that: the installation of the locking nut after the loading of the box cover can be realized without lifting the box cover, the alignment problem of the pull rod and the locking nut is solved, and the related complaint rate of the box cover falling is expected to be reduced by more than 80% through rigorous screening. BRIEF DESCRIPTION OF DRAWINGS

[0013] The utility model is further illustrated below in combination with the drawings and embodiments.

[0014] Figure 1 is the structural schematic diagram of the utility model;

[0015] Figure 2 is the structural schematic diagram with partial section of the utility model;

[0016] Figure 3 is the structural schematic diagram with the box cover of the utility model.

[0017] In the figure: 1, box cover, 11, wire hole, 2, base, 3, workbench, 4, limiting mechanism, 41, drive assembly, 411, screw rod, 42, limiting assembly, 421, connecting seat, 422, limiting block, 5, test mechanism, 51, mounting seat, 52, pull rod, 521, connecting section, 522, handle, 53, locking nut, 54, dismounting seat, 541, dismounting hole. DETAILED DESCRIPTION

[0018] The utility model will be explained in further detail now in combination with the drawings. These drawings are all simplified schematic diagrams, and only schematically show the basic structure of the utility model, so they only show the structure related to the utility model.

[0019] As Figure 1 It is the structure schematic diagram of the utility model, a box cover tensile test device, the box cover 1 has wire hole 11, the tensile test device includes base 2, workbench 3, limiting mechanism 4 and test mechanism 5, workbench 3 and base 2 fixed connection, limiting mechanism 4 is arranged on workbench 3, limiting mechanism 4 is used for limiting the position of box cover 1, test mechanism 5 includes mounting seat 51, pull rod 52, locking nut 53 and dismounting seat 54, and dismounting seat 54 and workbench 3 fixed connection, and the top surface of dismounting seat 54 is provided with the dismounting hole 541 matched with locking nut 53, and mounting seat 51 and base 2 fixed connection, and pull rod 52 and base 2 sliding connection, and the bottom end of pull rod 52 has the connecting section 521 matched with locking nut 53, and the connecting section 521 has the external thread matched with the screw hole of locking nut 53, through the design of mounting seat 51, pull rod 52, locking nut 53 and dismounting seat 54, the installation of locking nut 53 after the loading of box cover 1 can be realized, without lifting box cover 1, and the alignment problem of pull rod and locking nut 53 is solved, through rigorous screening, the related complaint rate of box cover falling is expected to drop by more than 80%.

[0020] As Figure 1 , Figure 2 As shown in the figure, the top end of pull rod 52 is arranged with handle 522, and handle 522 is used as a stress point during dragging and has other functions, so that the pull rod 52 device is more convenient, practical and safe, and pull rod 52 and dismounting hole 541 are coaxially arranged.

[0021] Limiting mechanism 4 includes drive assembly 41 and at least one limiting assembly 42, drive assembly 41 is arranged on the work sleeve, the output end of drive assembly 41 and limiting assembly 42 are in transmission connection, drive assembly 41 is used for providing power for the movement of limiting assembly 42, limiting assembly 42 includes connecting seat 421 and limiting block 422, connecting seat 421 and the output end of drive assembly 41 are in transmission connection, limiting block 422 and connecting seat 421 are fixedly connected, limiting block 422 is used for fixing and limiting box cover 1, so as to realize the tensile test of box cover 1.

[0022] In another embodiment, the limiting mechanism 4 includes two limiting components 42, the loading and unloading seat 54 is located between the two limiting components 42, the lead screw 411 has two threaded segments with opposite helical directions, the threaded segments of the lead screw 411 and the limiting components 42 are paired one-to-one, and the threaded segments of the lead screw 411 are threadedly connected to the connecting seat 421 of the corresponding limiting component 42.

[0023] The limiting block 422 has an L-shaped structure and is used to limit the upward movement of the lid 1.

[0024] The sliding connection between the connecting seat 421 and the worktable 3 increases the stability of the movement of the connecting seat 421.

[0025] like Figure 2 , Figure 3 As shown, the drive assembly 41 includes a lead screw 411, which is threadedly connected to a connecting seat 421. The lead screw 411 is rotatably connected to the worktable 3, and the lead screw 411 is driven to rotate by a rocker arm.

[0026] In another embodiment, the drive assembly 41 includes a cylinder, the output end of which is drively connected to the connecting seat 421.

[0027] Working principle:

[0028] In the initial state, the two limit mechanisms 4 are in the separated state, and the locking nut 53 is located in the loading and unloading hole 541.

[0029] In use, place the lid 1 on the workbench 3 and align the wire hole 11 of the lid 1 with the axis of the loading / unloading hole 541 or the axis of the pull rod 52. The user holds the handle 522 to lower the pull rod 52 until the connecting section 521 on the pull rod 52 contacts the locking nut 53. At this time, the connecting section 521 is aligned with the threaded hole of the locking nut 53. Rotate the pull rod 52 to make the connecting section 521 rotate into the threaded hole of the locking nut 53. The drive component 41 is activated to move the limiting block 422 toward the lid 1 until the limiting block 422 restricts the lid 1. Then pull the pull rod 52 and lift the lid 1 through the locking nut 53 to achieve the tensile strength test of the lid.

[0030] Based on the above-described preferred embodiments of this utility model, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the technical concept of this utility model. The technical scope of this utility model is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. A device for testing the resistance of a lid (1) having a wire passage hole (11) formed therein, characterized in that, The tension testing device comprises a base (2), a workbench (3), a limiting mechanism (4) and a testing mechanism (5), the workbench (3) is fixedly connected with the base (2), the limiting mechanism (4) is arranged on the workbench (3), the limiting mechanism (4) is used for limiting the position of the box cover (1), the testing mechanism (5) comprises a mounting seat (51), a pull rod (52), a locking nut (53) and a dismounting seat (54), the dismounting seat (54) is fixedly connected with the workbench (3), a dismounting hole (541) matched with the locking nut (53) is formed in the top surface of the dismounting seat (54), the mounting seat (51) is fixedly connected with the base (2), the pull rod (52) is slidably connected with the base (2), and the bottom end of the pull rod (52) is provided with a connecting section (521) matched with the locking nut (53).

2. A box cover tensile resistance testing device as claimed in claim 1, wherein: A handle (522) is arranged on the top end of the pull rod (52).

3. A box cover tensile resistance testing device as claimed in claim 1, wherein: The limiting mechanism (4) comprises a driving assembly (41) and at least one limiting assembly (42), the driving assembly (41) is arranged on the workbench, the output end of the driving assembly (41) is transmissionally connected with the limiting assembly (42), the driving assembly (41) is used for providing power for the movement of the limiting assembly (42), the limiting assembly (42) comprises a connecting seat (421) and a limiting block (422), the connecting seat (421) is transmissionally connected with the output end of the driving assembly (41), and the limiting block (422) is fixedly connected with the connecting seat (421).

4. A box cover tensile resistance testing device as claimed in claim 3, wherein: The driving assembly (41) comprises a lead screw (411), the lead screw (411) is threadedly connected with the connecting seat (421), and the lead screw (411) is rotationally connected with the workbench (3).

5. A box cover tensile resistance testing device as claimed in claim 4, wherein: The limiting mechanism (4) comprises two limiting assemblies (42), the dismounting seat (54) is located between the two limiting assemblies (42), the lead screw (411) is provided with two thread sections with opposite screw directions, the thread sections of the lead screw (411) are in one-to-one correspondence with the connecting seats (421) of the limiting assemblies (42), and the thread section of the lead screw (411) is threadedly connected with the connecting seat (421) of the corresponding limiting assembly (42).

6. A box cover tensile resistance testing device as claimed in claim 3, wherein: The limiting block (422) is in an L-shaped structure, and the limiting block (422) is used for limiting the upward movement of the box cover (1).

7. A box cover tensile resistance testing device as claimed in claim 3, wherein: The driving assembly (41) comprises a gas cylinder, and the output end of the gas cylinder is transmissionally connected with the connecting seat (421).

8. A box cover tensile resistance testing device as claimed in claim 3, wherein: The connecting seat (421) is slidably connected with the workbench (3).

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