CN218468602U - A lift-type three-phase AC-DC on-site calibrator - Google Patents

Description

A lift-type three-phase AC-DC on-site calibrator

technical field

The utility model relates to the technical field of calibration of electrical testing equipment, in particular to a lift-type three-phase AC-DC on-site calibrator.

Background technique

The three-phase AC/DC field calibrator integrates multiple functions such as three-phase AC standard source, DC standard source, three-phase AC measurement, DC small signal measurement, etc. It is very suitable for calibrating AC sampling devices, AC/DC transmitters, and three-phase AC/DC Measuring instruments and other equipment. Therefore, it is widely used in the calibration of related electrical equipment in factories.

However, due to the high integration of the three-phase AC-DC field calibrator, the large number of internal components of the tester, and the need for external power supply, the equipment is large in size, heavy in weight, poor in shock resistance, unable to adjust the height, and needs to be powered by cables. . Therefore, in actual work, these shortcomings increase the working intensity of the operators, and it is inconvenient to check and repair. In this regard, a new type of three-phase AC-DC on-site calibrator is needed to solve the above problems, reduce the labor intensity of the staff, and facilitate the operation of the staff.

Practical new content

In order to solve the above technical problems, the utility model provides a lifting type three-phase AC-DC on-site calibrator, which includes a base, a support rod arranged on the base, a screw lifting device sleeved in the support rod and a screw lifting device arranged on the The three-phase AC and DC on-site calibrator;

Screw lifting device, including:

Bearings, threaded seats, keys, rotary handles, screws and tables;

The bearing is installed in the support rod; the outer ring of the bearing is in contact with the inner wall of the support rod, and the inner ring is in contact with the threaded seat; the threaded seat is a stepped shaft, and the inner ring of the bearing is in contact with the end face of the threaded stepped shaft to play a supporting role;

The threaded seat fits with the thread of the screw, is sleeved on the screw, and is connected with the rotating handle through a key; driven by the rotating handle, the threaded seat rotates and drives the screw to move up and down, and at the same time, the self-locking property of the screw drive is used to ensure the self-locking of the screw; The workbench is installed on the top of the screw rod and moves up and down with the screw rod to support the three-phase AC/DC field calibrator to move up and down.

Further, the base includes universal wheels and a base platform; the universal wheels are evenly distributed on the lower end surface of the base platform.

Further, the support rod is hollow inside, and the side wall is provided with holes.

Further, the three-phase AC/DC on-site calibrator is provided with feet for fixing; the feet are evenly distributed on the side walls of the three-phase AC/DC on-site calibrator.

Further, a plug-in row is also provided; the plug-in row is installed on the workbench.

Further, a wire gathering device is also provided, including a wire harness frame, electric wires and a mounting frame; the mounting frame is installed on the side of the support rod, the wire harness frame is installed on the mounting frame, and the wires are wound on the wire harness frame; the middle shaft of the wire harness frame is hollow inside .

Further, the mounting frame is provided with holes for passing electric wires.

Further, the inside of the screw is hollow, which facilitates the introduction of electric wires.

The lift-type three-phase AC-DC on-site calibrator of the utility model comprises a base, a support rod arranged on the base, a screw lifting device set in the support rod and a three-phase AC-DC on-site calibrator arranged on the screw lifting device , Through the screw lifting device with simple structure and ingenious design, the calibrator can be adjusted to any position and height required by the work at will, which is convenient for workers to operate, and can also avoid unnecessary bumps and injuries to workers. On this basis, the base and other components have been improved, and plug-in strips, etc. have been added to make it more convenient for equipment movement, reduce the burden of workers' handling, facilitate power supply for related equipment to be tested during work, facilitate workers' operation, and facilitate wires. With the advantages of collecting and pulling power supply, it is a lifting type three-phase AC and DC field calibrator with simple structure and easy operation.

Description of drawings

In order to more clearly illustrate the new embodiments of the utility model or the technical solutions in the prior art, the following will briefly introduce the accompanying drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description The drawings are only some embodiments recorded in the utility model, and those skilled in the art can also obtain other drawings according to these drawings without creative work.

Fig. 1 is a new three-dimensional schematic diagram of the utility model;

Fig. 2 is a partial sectional view of the utility model;

Fig. 3 is a three-dimensional schematic diagram for showing the bottom of the utility model;

Detailed ways

In order to enable those skilled in the art to better understand the technical solution of the utility model, the utility model will be described in detail below in conjunction with the accompanying drawings. The description of this part is only exemplary and explanatory, and should not protect the utility model The scope has any limiting effect.

It should be noted that like numerals and letters denote similar items in the following figures, therefore, once an item is defined in one figure, it does not require further definition and explanation in subsequent figures.

It should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner" and "outer" are Based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship that the utility model is usually placed in use, it is only for the convenience of describing the utility model and simplifying the description, not to indicate or imply No device or element must have a specific orientation, be constructed and operate in a specific orientation, and thus should not be construed as limiting the invention. In addition, the terms "first", "second", "third", etc. are only used for distinguishing descriptions, and should not be construed as indicating or implying relative importance.

In addition, the terms "horizontal", "vertical", "overhanging" and the like do not mean that the components are absolutely horizontal or overhanging, but may be slightly inclined. For example, "horizontal" only means that its direction is more horizontal than "vertical", and it does not mean that the structure must be completely horizontal, but can be slightly inclined.

In the description of the utility model, it should also be noted that, unless otherwise clearly stipulated and limited, the terms "installation", "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be fixed The connection can also be a detachable connection or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediary, and it can be the internal communication of two components. Those of ordinary skill in the art can understand the specific meanings of the above terms in the utility model in specific situations.

As shown in Figure 1, the utility model provides a lifting type three-phase AC and DC on-site calibrator, including a base 1, a support rod 2 arranged on the base, a screw lifting device 3 sleeved in the support rod and a Three-phase AC/DC field calibrator 4 on the lifting device;

The screw lifting device 3 includes: a bearing 31, a threaded seat 32, a key 33, a rotating handle 34, a screw 36 and a workbench 35; connected, the inner ring is in contact with the threaded seat 32; the threaded seat 32 is a stepped shaft, and the inner ring of the bearing 31 is in contact with the end face of the threaded stepped shaft to play a supporting role;

The threaded seat 32 and the screw rod 36 are threadedly matched, are sleeved on the screw rod 36, and are connected with the rotating handle 34 through a key 33; driven by the rotating handle 34, the threaded seat 32 rotates and Drive the screw rod 36 to move up and down, and utilize the self-locking property of the screw rod transmission to ensure the height of the screw rod to be self-locking;

Preferably, as shown in FIG. 2, the base 1 includes: universal wheels 11 and a base platform 12; the universal wheels 11 are uniformly installed on the lower end surface of the base platform 12 through bolts, and the base platform 12 can be Choose but not limited to a disc, smooth without edges and corners, to avoid bumping and hurting people.

Preferably, as shown in FIG. 2 , the wire gathering device 6 includes a wire harness frame 62, wires 61 and a mounting frame 63; the mounting frame 63 is installed on the side of the support rod 2, and the wire harness frame 62 is mounted on the On the side of the mounting frame 63, the wires 61 are wound on the wire harness frame 62; the inside of the middle shaft of the wire harness frame 62 is convenient for the wires 6 to pass through, and the wire harness frame 62 is not rotatable and needs to be pulled out manually. The wire 61 is wound up.

Preferably, as shown in Figure 1, the three-phase AC-DC field calibrator 4 is provided with a foot block 41 for fixing; the foot blocks 41 are evenly distributed on the side wall of the three-phase AC-DC field calibrator 4, so The three-phase AC/DC on-site calibrator 4 is connected to the workbench 35 through bolts.

Specifically, the interior of the supporting rod 2 is hollow, and the side wall is provided with holes. Similarly, the installation frame 63 is provided with holes through which the electric wires 61 pass, so that the electric wires 61 can be introduced into the interior to provide power for equipment.

Preferably, as shown in FIG. 2, the inside of the screw 36 is hollow, which is convenient for the introduction of the electric wire 61. The length of the electric wire 61 inside the support rod 2 is longer than the length of the screw rod 36, which is convenient for the inside of the support rod 2. Electric wire 61 moves up and down along with screw rod 36, can not pull off simultaneously.

Preferably, as shown in FIG. 2 , the utility model is also provided with a plug-in strip 5 for power supply of related equipment, and the plug-in strip 5 is installed on the workbench 35 .

Specifically, the workbench 35 is provided with a rectangular hole for installing the plug-in strip 5 , and the power supply of the plug-in strip 5 and the three-phase AC/DC field calibrator 4 is introduced through the electric wire 61 .

As shown in Figure 1, the working principle of the present utility model;

When the utility model works, the operator pushes the equipment to the workplace, releases the wire harness wound on the wire gathering device 6 and pulls the wire to supply power; after the power supply is ready, manually rotate the screw lifting device 3 to reach a suitable height , stop the rotation, and the height of the equipment is locked under the action of thread self-locking; then the operator checks the relevant equipment. If the relevant equipment needs external power supply, the plug-in strip 5 next to the three-phase AC-DC field calibrator 4 can be used for power supply. It is convenient for the operator to carry out calibration.

It can be seen that the utility model is designed with a base 1 with universal wheels 11 to facilitate the movement of equipment and reduce the burden on workers; the design of the base 1 without edges and corners prevents the equipment from bumping and causing harm to workers; Wire collection and pull wire power supply; manual screw lifting device 3 is used to raise and lower the height, which is convenient for adjusting the height at will to reach the height of any position required for work; the plug-in strip 5 of the working platform is designed to facilitate power supply for related equipment to be tested during work, which is convenient for workers to operate.

It is worth noting that the utility model takes the practical application of the three-phase AC-DC field calibrator 4 as an entry point, and creates a new lift-type three-phase AC-DC field calibrator for reducing the labor intensity of operators and is easy to use, but it does not It is not limited to this, as long as under the technical conception of the utility model, a similar screw lifting mechanism is adopted, it should be within the scope of technical protection of the utility model.

The technical features of the above-mentioned embodiments can be combined arbitrarily. To make the description concise, all possible combinations of the technical features in the above-mentioned embodiments are not described. However, as long as there is no contradiction in the combination of these technical features, should be considered as within the scope of this specification. The technical scheme of the utility model, by designing the base with universal wheels 11, facilitates the movement of equipment and reduces the burden on workers; the base 1 has no edges and corners to avoid equipment bumping and causing harm to workers; the side is equipped with a wire gathering device 6 It is convenient for wire collection and pull wire power supply; the manual screw lifting device 3 is used to raise and lower the height, which is convenient to adjust the height at will to reach the height of any position required for work; the plug-in strip 5 of the working platform is designed to facilitate power supply for related equipment to be tested during work, which is convenient for workers to operate .

The above-mentioned embodiment only expresses one implementation mode of the utility model, and its description is relatively specific and detailed, but it should not be understood as a limitation on the patent scope of the utility model. It should be noted that those skilled in the art can make several modifications and improvements without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the scope of protection of the utility model patent should be based on the appended claims.

Claims (8)

1. A lift-type three-phase AC-DC on-site calibrator, characterized in that it comprises a base, a support rod arranged on the base, a screw lifting device sleeved in the support rod and a three-phase AC-DC device set on the screw lifting device On-site calibrator; Screw lifting device, including: Bearings, threaded seats, keys, rotary handles, screws and tables; The bearing is installed in the support rod; the outer ring of the bearing is in contact with the inner wall of the support rod, and the inner ring is in contact with the threaded seat; the threaded seat is a stepped shaft, and the inner ring of the bearing is in contact with the end face of the threaded stepped shaft to play a supporting role; The threaded seat fits with the thread of the screw, is sleeved on the screw, and is connected with the rotating handle through a key; driven by the rotating handle, the threaded seat rotates and drives the screw to move up and down, and at the same time, the self-locking property of the screw drive is used to ensure the self-locking of the screw; The workbench is installed on the top of the screw rod and moves up and down with the screw rod to support the three-phase AC/DC field calibrator to move up and down. 2. A lift-type three-phase AC-DC on-site calibrator according to claim 1, wherein the base includes universal wheels and a base platform; the universal wheels are evenly distributed on the lower end surface of the base platform. 3. A lift-type three-phase AC-DC on-site calibrator according to claim 1, characterized in that the support rod is hollow inside, and the side wall is provided with holes. 4. A lifting type three-phase AC-DC field calibrator according to claim 1, characterized in that, the three-phase AC-DC field calibrator is provided with foot blocks for fixing; the foot blocks are evenly distributed on the three-phase AC-DC field calibrator. Tester side wall. 5. A lift-type three-phase AC-DC on-site calibrator according to claim 1, characterized in that a plug-in strip is also provided; the plug-in strip is installed on the workbench. 6. A lift-type three-phase AC-DC on-site calibrator according to any one of claims 1-5, characterized in that it is also provided with a wire collection device, including a wire harness rack, electric wires and a mounting frame; the mounting frame is installed on On the side of the support rod, the wire harness frame is installed on the installation frame, and the wires are wound on the wire harness frame; the middle shaft of the wire harness frame is hollow inside. 7. A lift-type three-phase AC-DC on-site calibrator according to claim 6, characterized in that holes for passing electric wires are provided on the mounting frame. 8. A lift-type three-phase AC-DC on-site calibrator according to claim 7, characterized in that the inside of the screw is hollow to facilitate the introduction of electric wires.

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