Program-controlled load box device

Abstract

The utility model relates to the technical field of electrical engineering, and discloses a program-controlled load box device which comprises a box body frame, a plurality of heat dissipation shells are fixedly connected to the periphery of the box body frame respectively, a plurality of load card installation frames are fixedly connected to the interior of the box body frame, a plurality of load cards are detachably connected to the outer walls of the load card installation frames, and the load cards are fixedly connected to the box body frame. The external part of the load card is fixedly connected with a rising assisting device, a first measuring interface, a menu button, two nixie tube displays and a plurality of measuring resistors, and the measuring resistors are fixedly connected with the external part of the load card. The outer wall of the load card is fixedly connected with a plurality of cooling fins. According to the utility model, the 2 / 4 / 6 / 8 / 10 / 12 / 14 omega switching is realized through program control, so that the problem that the test efficiency is influenced due to overlong preparation time in the early stage is avoided, and meanwhile, the equipment is small in size and convenient to maintain.

Description

Technical Field

[0001] This utility model relates to the field of electrical engineering technology, and in particular to a programmable load cell device. Background Technology

[0002] In audio power amplifier performance testing, a load cell is required. Testing different product specifications necessitates adjusting the load resistance to simulate varying load conditions. In standard testing, adjusting the load cell resistance requires the tester to manually replace the load cell or manually adjust the resistor connections to match the load resistance before testing. This preparation process is quite lengthy for each test.

[0003] Currently, most load cells used for testing have non-adjustable load resistance values, and even those that can adjust the load resistance only offer two to three levels of adjustment via a toggle switch. There is a need for a wider range of load resistance values ​​to meet the diverse testing requirements of the various product specifications. Most test cabinets are designed to accommodate multiple products under test simultaneously, but current load cells have limited channels. To meet testing needs, multiple load cells must be installed and used simultaneously, which consumes a lot of space. Therefore, a programmable load cell device is proposed to solve the above problems. Utility Model Content

[0004] To overcome the above shortcomings, this utility model provides a programmable load cell device, which aims to improve the problem that most existing test cabinets require multiple load cells to be installed and used simultaneously to meet test requirements, resulting in a large space occupation.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A programmable load cell device includes a housing frame, with multiple heat dissipation shells fixedly connected to its four sides. Multiple load card mounting frames are fixedly connected inside the housing frame. Multiple load cards are detachably connected to the outer walls of the load card mounting frames. An auxiliary starter is fixedly connected to the outside of each load card. A measurement interface is fixedly connected to the outside of each load card. A menu button is fixedly connected to the outside of each load card. Two digital tube displays are fixedly connected to the outside of each load card. Multiple measuring resistors are fixedly connected inside each load card. Multiple heat sinks are fixedly connected to the outer walls of each load card. Multiple switching relays are fixedly connected to the outer walls of each load card. A protective component is fixedly connected to the outer wall of the bottom heat dissipation shell to prevent ground moisture from damaging the load cell.

[0007] As a further description of the above technical solution:

[0008] The protection assembly includes a connecting plate, the top of the connecting plate is fixedly connected to the bottom of the heat dissipation shell, the bottom of the connecting plate is fixedly connected with a plurality of telescopic columns, the bottom of the plurality of telescopic columns is fixedly connected with a base, the top of the base is fixedly connected with a plurality of fixed piles, the outer side of one of the fixed piles is fixedly connected with a motor, the proximal side of the plurality of fixed piles is respectively rotatably connected with a plurality of gears, the other side of the gear is fixedly connected with a connecting rod one, the other end of the connecting rod one is rotatably connected with a connecting rod two, the other end of the plurality of connecting rod twos is rotatably connected with a top plate;

[0009] As a further description of the above technical solution:

[0010] The inside of one of the heat dissipation shells is provided with a plurality of heat dissipation fans;

[0011] As a further description of the above technical solution:

[0012] The outer wall of another heat dissipation shell is provided with a host computer communication interface, and the outer wall of another heat dissipation shell is provided with a system power supply interface;

[0013] As a further description of the above technical solution:

[0014] The outer wall of another heat dissipation shell is provided with a plurality of measurement interfaces two;

[0015] As a further description of the above technical solution:

[0016] One end of the box frame is provided with a plurality of clamping edge connectors, and the distal end of the load card is detachably connected to the outside of the clamping edge connector;

[0017] As a further description of the above technical solution:

[0018] The top of the top plate is fixedly connected to the bottom of the connecting plate, and the driving end of the motor is fixedly connected to the inside of the gear;

[0019] As a further description of the above technical solution:

[0020] The top of the base is rotatably connected with a gear slot ring, and the top of the gear slot ring is rotatably connected with the outer side of the plurality of gears.

[0021] The utility model has the advantages of:

[0022] 1. The utility model discloses a load card is installed and is dismantled fast to the 6 insertion slot of load box, and the load card is connected with the load box and is connected with the card edge connector. Each load card has 16 channels, and the whole load box is 96 channels, and each channel can be programmed to switch the load resistance value 2 / 4 / 6 / 8 / 10 / 12 / 14 omega, realizes the program control switching 2 / 4 / 6 / 8 / 10 / 12 / 14 omega switching, to avoid the problem that the test personnel needs to manually replace the corresponding load box or manually adjusts the resistance connecting wire mode matching load resistance value to simulate the load condition when testing different specifications of product before preparing test, and the preparation work time is too long, and the test efficiency is influenced.

[0023] 2. The utility model discloses a motor operation drives one gear to rotate, and when one gear rotates, drives the gear slot ring to rotate and drives four gears to rotate synchronously, to drive connecting rod no. 1 to rotate, and the rotation of connecting rod no. 1 drives connecting rod no. 2 to rotate, thereby driving the top plate to stably lift, and then drives the whole load box to lift through the connecting plate transmission effect, realizes the protection of load box to the ground humidity, effectively isolates the ground humidity, and protects the load box from the influence of damp environment. ACCURACY OF DRAWINGS

[0024] Figure 1 It is a three-dimensional schematic view of the program-controlled load box device proposed in the utility model;

[0025] Figure 2 It is a structure schematic view of the load card mounting frame of the program-controlled load box device proposed in the utility model;

[0026] Figure 3 It is a structure schematic view of the upper computer communication interface of the program-controlled load box device proposed in the utility model;

[0027] Figure 4 It is a structure schematic view of the measuring resistance of the program-controlled load box device proposed in the utility model;

[0028] Figure 5 It is a structure schematic view of the gear slot ring of the program-controlled load box device proposed in the utility model.

[0029] LEGEND:

[0030] 1, box frame; 2, heat dissipation shell; 3, heat dissipation fan; 4, load card; 5, jack; 6, measurement interface one; 7, menu button; 8, nixie tube display; 9, load card mounting frame; 10, measurement resistance; 11, heat dissipation fin; 12, switching relay; 13, host computer communication interface; 14, system power supply interface; 15, measurement interface two; 16, connecting plate; 17, telescopic column; 18, base; 19, fixed pile; 20, motor; 21, gear; 22, connecting rod one; 23, connecting rod two; 24, top plate; 25, gear groove ring; 26, card edge connector. DETAILED DESCRIPTION

[0031] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0032] Referring to Figures 2 to 4 An embodiment provided by the utility model: a program-controlled load box device, comprising a box frame 1, a plurality of heat dissipation shells 2 are fixedly connected around the box frame 1, the heat dissipation shells 2 are used to effectively dissipate the heat generated inside, and the device can maintain an appropriate working temperature during long-time operation. The inside of one of the heat dissipation shells 2 is provided with a plurality of heat dissipation fans 3, the outer wall of another heat dissipation shell 2 is provided with a host computer communication interface 13, and the host computer communication interface 13 communicates with the host computer in a 485 serial bus mode. The outer wall of another heat dissipation shell 2 is provided with a system power supply interface 14 for providing stable power input for the whole device. The outer wall of another heat dissipation shell 2 is provided with a plurality of measurement interface two 15, and the measurement interface two 15 is used to be connected with a test cabinet and a tested product. The inside of the box frame 1 is fixedly connected with a plurality of load card mounting frames 9, the outer wall of the load card mounting frame 9 is detachably connected with a plurality of load cards 4, and the design of the load card mounting frame 9 enables the load card 4 to be easily inserted and taken out, facilitating maintenance and upgrading. The outside of the load card 4 is fixedly connected with a jack 5, the load card 4 is taken out by pressing the jack downward when the load card 4 is replaced, and the load card 4 is pushed into the corresponding slot when the load card 4 is installed.

[0033] The external of the load card 4 is fixedly connected with a measurement interface 6, which is used to judge whether the switching load resistance value is correct during debugging. The external of the load card 4 is fixedly connected with a menu button 7, through which the user can operate and set the working mode of the load card 4. The external of the load card 4 is fixedly connected with two nixie tubes 8, which can visually display the current working state and parameters. The internal of the load card 4 is fixedly connected with a plurality of measurement resistors 10, which are used to accurately measure the current and voltage flowing through the load card 4, so as to calculate the actual load size. The external wall of the load card 4 is fixedly connected with a plurality of heat dissipation fins 11, which help to further improve the heat dissipation efficiency and prevent performance degradation or damage due to overheating. The external wall of the load card 4 is fixedly connected with a plurality of switching relays 12, which can switch different working circuits according to the control signal to adapt to different test requirements. One end of the box frame 1 is provided with a plurality of card edge connectors 26, the end of the load card 4 is detachably connected outside the card edge connector 26, and the design of the card edge connector 26 makes the end of the load card 4 can be detachably connected outside it. The external wall of the bottom heat dissipation shell 2 is fixedly connected with a protection assembly for preventing the ground from being damaged by the load box.

[0034] Referring to Figure 1 , Figure 3 The protection assembly includes a connecting plate 16 for connecting the protection assembly and the load box. The top of the connecting plate 16 is fixedly connected to the bottom of the bottom heat dissipation shell 2, and the bottom of the connecting plate 16 is fixedly connected with a plurality of telescopic columns 17 for synchronous telescoping when the load box is lifted to ensure the stability of the load box lifting. The bottom of the plurality of telescopic columns 17 is fixedly connected with a base 18, which is the support foundation of the entire device, providing stable support for lifting adjustment and the load box. The top of the base 18 is fixedly connected with a plurality of fixed piles 19, one of which is fixedly connected with a motor 20 on the outside, and the proximal sides of the plurality of fixed piles 19 are respectively rotatably connected with a plurality of gears 21, the driving end of the motor 20 is fixedly connected inside the gear 21, and the gear 21 is driven to rotate by the motor 20 to control the operation of the entire lifting device.

[0035] The other side of the gear 21 is fixedly connected with a connecting rod one 22, the other end of the connecting rod one 22 is rotatably connected with a connecting rod two 23, the other end of the plurality of connecting rod two 23 is rotatably connected with a top plate 24, when the gear 21 rotates, the connecting rod one 22 is driven to rotate, the connecting rod one 22 is driven to rotate when the connecting rod two 23 is driven to rotate, so that the whole connecting rod mechanism is unfolded and recovered in the vertical direction, thereby controlling the lifting of the top plate 24. The top of the top plate 24 is fixedly connected to the bottom of the connecting plate 16, so that the movement of the top plate 24 can drive the connecting plate 16 to move synchronously, thereby driving the load box to lift. The top of the base 18 is rotatably connected with a gear slot ring 25, the top of the gear slot ring 25 is rotatably connected with the plurality of gears 21, one of the gears 21 is driven to rotate, thereby driving the gear slot ring 25 to rotate, so that the other three gears 21 are driven to rotate synchronously, so that the top plate 24 is subjected to the same thrust or pull force in four directions, thereby stably lifting the top plate 24.

[0036] Working principle: the 6 slots of the load box can quickly install and dismount the load card 4, the load card 4 is connected with the load box by the card edge connector 26. Each load card 4 has 16 channels, and the whole load box has 96 channels. Each channel can be programmed to switch the load resistance value of 2 / 4 / 6 / 8 / 10 / 12 / 14Ω. The 4-digit nixie tube on the front panel of the load card 4 cooperates with the menu button 7 to display the channel number and set the load resistance value. When replacing the load card 4, press the puller downward to take out the load card 4, and when installing the load card 4, push the load card 4 into the corresponding slot.

[0037] When the load box is lifted as a whole, the motor 20 is turned on, the motor 20 operates to drive one of the gears 21 to rotate, the gear 21 rotates to drive the gear slot ring 25 to rotate, thereby driving the four gears 21 to rotate synchronously, thereby driving the connecting rod one 22 to rotate, the rotation of the connecting rod one 22 drives the connecting rod two 23 to rotate, and the rotation of the four connecting rod two 23 realizes the stable lifting of the top plate 24 in the vertical direction, thereby driving the whole load box to lift through the transmission of the connecting plate 16, so as to effectively isolate the ground moisture and protect the load box from the influence of the humid environment.

[0038] Finally, it should be pointed out that: the above only describes the preferred embodiments of the present application and is not intended to limit the present application. Although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing embodiments or make equivalent replacements to some technical features, as long as they are within the spirit and principles of the present application. Any modification, equivalent replacement, improvement, etc. made within the scope of the present application shall be included in the protection scope of the present application.

Claims

1. A programmable load bank arrangement comprising a bank frame (1) characterised in that: The four around of casing frame (1) respectively fixedly connected with a plurality of heat dissipation shell (2), the inside of casing frame (1) is fixedly connected with a plurality of load card installation frame (9), the outer wall of load card installation frame (9) is detachably connected with a plurality of load card (4), the outside of load card (4) is fixedly connected with the help of ware (5), the outside of load card (4) is fixedly connected with measurement interface one (6), the outside of load card (4) is fixedly connected with menu button (7), the outside of load card (4) is fixedly connected with two nixie display (8), the inside of load card (4) is fixedly connected with a plurality of measuring resistance (10), the outer wall of load card (4) is fixedly connected with a plurality of cooling fins (11), the outer wall of load card (4) is fixedly connected with a plurality of switching relay (12), the outer wall of bottom heat dissipation shell (2) is fixedly connected with the protection assembly for preventing the ground back moisture damage load box.

2. A programmable load box apparatus according to claim 1, wherein: The protection assembly includes a connecting plate (16), the top of the connecting plate (16) is fixedly connected at the bottom of the heat dissipation shell (2), the bottom of the connecting plate (16) is fixedly connected with a plurality of telescopic columns (17), the bottom of a plurality of telescopic columns (17) is fixedly connected with a base (18), the top of the base (18) is fixedly connected with a plurality of fixed piles (19), one of the fixed piles (19) is fixedly connected with a motor (20) on the outside, a plurality of gear wheels (21) are rotatably connected on the side of a plurality of fixed piles (19) respectively, the other side of the gear wheel (21) is fixedly connected with a connecting rod one (22), the other end of the connecting rod one (22) is rotatably connected with a connecting rod two (23), the other end of a plurality of connecting rod two (23) is rotatably connected with a top plate (24).

3. A programmable load box apparatus according to claim 1, wherein: The inside of one of the heat dissipation shell (2) is provided with a plurality of cooling fans (3).

4. The programmable load box apparatus of claim 1, wherein: The outer wall of another heat dissipation shell (2) is provided with a host computer communication interface (13), and the outer wall of another heat dissipation shell (2) is provided with a system power supply interface (14).

5. The programmable load box apparatus of claim 1, wherein: The outer wall of another heat dissipation shell (2) is provided with a plurality of measurement interface two (15).

6. A programmable load box apparatus according to claim 1, wherein: One end of the casing frame (1) is provided with a plurality of card edge connectors (26), and the distal end of the load card (4) is detachably connected to the outside of the card edge connector (26).

7. A programmable load box apparatus according to claim 2, wherein: The top of the top plate (24) is fixedly connected to the bottom of the connecting plate (16), and the driving end of the motor (20) is fixedly connected to the inside of the gear wheel (21).

8. A programmable load box apparatus according to claim 2, wherein: The top of the base (18) is rotatably connected with a gear slot ring (25), and the top of the gear slot ring (25) is rotatably connected with a plurality of gear wheels (21) on the outside.

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