CN205630754U - Radial cutting device of insulating anchoring strength sample - Google Patents

Abstract

The utility model discloses a radial cutting device for insulating adhesion force samples, which comprises a base, a top plate, a movable support, a column, a hand wheel and a wheel shaft, and is characterized in that the two ends of the column are respectively arranged on the base and the the top plate; the movable bracket is set on the column; the axle is set on the top plate, the top is fixedly connected with the handwheel, and the bottom is screwed with the movable bracket; A blade shaft is provided at the bottom of the movable support, and at least two blades are provided on the blade shaft; a pair of rolling shafts parallel to the blade shafts are provided on the base. As a processing auxiliary tool, the utility model can effectively improve the efficiency, and make the size and technology of the sample better meet the requirements of the standard.

Description

Insulation Adhesion Test Radial Cutting Device

technical field

The utility model relates to the field of cutting devices, in particular to a radial cutting device for insulated cables, in particular to a radial cutting device for insulation adhesion samples.

Background technique

In the "GB/T14049-2008 Rated Voltage 10kV Overhead Insulated Cable" standard, the insulation adhesion test specifies the size and process requirements of the sample. According to the national standard, first take a standard size overhead insulated cable sample, peel off the insulation layer at both ends of the sample, leave a 100mm insulation layer in the middle, and then conduct an adhesion test on the insulation layer.

The method of peeling off the insulation layer is to mark the cutting position on the surface of the sample, first cut the insulation layer of the sample radially until it touches the wire; then make an axial cut, and finally peel off the insulation layer. Usually, the whole process is completed by workers, that is, the operator measures and marks the cutting position on the sample, and then carries out the radial cutting with the blade. This cutting method has the following disadvantages:

1. Due to manual measurement, there may be errors in the cutting position, resulting in the length of the insulating layer not meeting the standard requirements.

2. Due to the use of manual radial cutting, the consistency of the operation results is poor, which will also cause the length of the insulating layer to fail to meet the standard requirements; at the same time, there is also a deviation phenomenon that the cutting surface is not on the same plane, resulting in irregular cutting end surfaces.

3. When the length of the insulation layer of the sample cannot meet the standard requirements, the results of the insulation adhesion test cannot reflect the true performance of the product. The consequence is that on the one hand, products that meet the requirements are misjudged as unqualified, resulting in waste; on the other hand, products that do not meet the requirements are misjudged as qualified, which may lead to safety addiction.

4. Since the whole process is completed by workers, the work efficiency is low and the labor cost is relatively high, so it is very uneconomical.

Contents of the invention

The utility model aims to solve the problems existing in the prior art, and aims to provide a radial cutting device for insulating adhesion samples as a processing auxiliary tool, which can effectively improve the efficiency and make the size and process of the sample more accurate. Meet the requirements of the standard.

In order to solve the above-mentioned problems, the utility model adopts the following technical solutions: a radial cutting device for insulating adhesion samples, including a base, a top plate, a movable support, a column, a hand wheel and a wheel shaft, and is characterized in that the two ends of the column are respectively arranged On the base and the top plate; the movable bracket is set on the column; the axle is set on the top plate, the top is fixedly connected with the hand wheel, and the bottom is connected with the movable The brackets are threaded; the bottom of the movable bracket is provided with a blade shaft, and at least two blades are provided on the blade shaft; a pair of rolling shafts parallel to the blade shafts are provided on the base.

The radial cutting device for insulation adhesion samples of the utility model, when in use, rotates the handwheel forward, moves the movable bracket upwards, and places the sample on a pair of rolling shafts; rotates the handwheel in the reverse direction, so that The movable support moves downward, and when the blade touches the insulating layer of the sample, the sample is rotated at the same time for radial cutting; when the blade touches the conductor part of the overhead insulated cable, the cutting is stopped; forward rotation of the handwheel moves the movable support toward Move up and take out the sample.

It can be seen that the utility model uses an auxiliary tool to radially cut the insulation adhesion sample, which has the following advantages:

1. Since the position of the blade is set according to the standard requirements, it can ensure that the cutting size meets the national standard.

2. The cut sample can fully reflect the real performance of the product in the insulation adhesion test, and there will be no misjudgment, thus avoiding waste and possible safety addiction.

3. Due to the use of auxiliary tools, the cutting efficiency is greatly improved.

4. The fixed bracket is in the form of a column. On the one hand, the column can be used as the guide column of the movable bracket, so that the movable bracket can move smoothly, ensuring the accuracy of cutting and the flatness of the cutting surface; on the other hand, because the column does not occupy space, it can be used on the side Leave a space for the sample to pass through and be placed on the two rolling axes, and also leave a space on the front for the operator to observe the cutting state.

5. Double rolling shafts are used as the supporting mechanism, and the two rolling shafts move at the same time, which can ensure the minimum friction force and keep the test in the center of the whole device, so that the blade mechanism can cut the sample more effectively.

6. The structure of the whole machine is simple, the operation is stable and reliable, and the operation is convenient.

It can be understood that a sample positioning surface may be directly provided or processed at one end of the base. As a preferred manner, a sample positioning post is also provided at one end of the base. The positioning post can be arranged on the mounting block of the rolling shaft. The cross-section of the positioning column is adapted to the sample, and the coaxial setting can ensure the accuracy of positioning, and at the same time, it does not interfere with the rolling axis during installation.

As an improvement of the utility model, the movable bracket is connected to the column through the first bearing, and the wheel shaft and the top plate are connected through the second bearing, so that the whole machine runs more smoothly during operation.

As a further improvement of the utility model, there are 3-4 columns. When there are 3 uprights, set one on one side of the positioning and two on the other side so that the sample can pass through the two uprights.

As a further improvement of the utility model, the whole machine is made of No. 45 steel. This kind of material is cheap and after quenching and tempering (or normalizing), it can obtain better cutting performance, and can obtain comprehensive mechanical properties such as higher strength and toughness. Another advantage of using metal materials is that the buzzer circuit can be connected externally. Specifically, connect the device of the present invention and the wires of the sample to the buzzer circuit, when the knife is advanced until the blade touches the wires, the buzzer circuit is turned on, the buzzer makes a sound, and the cutting can be stopped.

Description of drawings

Fig. 1 is an axonometric view of the utility model.

Fig. 2 is the front view of the utility model.

Fig. 3 is a left view diagram of the utility model.

Fig. 4 is a structural schematic diagram of an embodiment of the utility model having three blades.

Figure 5 is a diagram of the sample after three-blade cutting.

Figure 6 is a sample diagram after double-blade cutting.

detailed description

Referring to Fig. 1, Fig. 2 and Fig. 3, the radial cutting device of the insulation adhesion sample of the present utility model comprises a base 8, a top plate 3, a movable support 5, a column 6, a hand wheel 1, a wheel shaft 9 and a pair of rolling shafts 7. There are four columns 6, and the two ends of each column 6 are respectively fixed on the base 8 and the top plate 3. The movable bracket 5 is sleeved on the column 6 . The wheel shaft 9 is arranged on the top plate 3 , the top is fixedly connected with the handwheel 1 , and the bottom is screwed with the movable bracket 5 . The bottom of the movable support 5 is provided with a blade shaft 12, and the blade shaft 12 is provided with three blades 11, 13, 14; the distance between the blades 11 and 13 is 100 mm, which is the insulation layer test length specified by the national standard. Both ends of the base 8 are respectively provided with a rolling shaft mounting block 16, 17, the pair of rolling shafts 7 are arranged on the mounting blocks 16, 17, and the pair of rolling shafts 7 and the blade shaft 12 parallel. The sample positioning column 10 is also provided on the rolling shaft mounting block 17 .

The movable bracket 5 is connected with the column 6 through the first bearing 4 . The wheel shaft 9 and the top plate 3 are connected through the second bearing 2, so that the whole machine runs more smoothly during operation.

The whole machine is made of No. 45 steel.

The operating process of the present utility model is as follows:

1. Rotate the hand wheel 1 in the forward direction, move the movable support 3 upwards, place a sample with a length of about 400mm on a pair of rolling shafts, and one end of the sample fits the positioning column 10 against the mold.

2. Rotate the hand wheel 1 in the opposite direction to move the movable support 3 downwards. When the blade touches the insulating layer of the sample, the sample is rotated at the same time for radial cutting.

3. When the blade touches the conductor part of the overhead insulated cable, stop cutting; rotate the handwheel forward, move the movable bracket upwards, and take out the sample.

As shown in FIG. 5 , the cut sample 15 has a segment with an insulating layer 1501 , a bare wire segment 1502 , a segment with an insulating layer 1503 and a bare wire segment 1504 . Wherein, the section with insulating layer 1501 is a cable fixing section, which is used to fix the multi-strand cables so that they do not disperse. The segment with insulation layer 1503 is the insulation adhesion test part. Bare wire segments 1502 and 1504 are used for clamping.

Referring to Fig. 4, another embodiment of the present utility model. The difference from the previous embodiment is that this embodiment uses two blades, and the rest of the structure is the same as the previous embodiment. In this embodiment, a segment with an insulating layer 1503 (as shown in FIG. 6 ) can also be cut out for the insulation adhesion test part, and the structure is relatively simple, but there is no insulating layer of the cable fixing segment at the end.

It should be understood that: the above-mentioned embodiment is only an illustration of the utility model, rather than a limitation of the utility model, and any utility model creation within the scope of the essential spirit of the utility model all falls within the protection scope of the utility model .

Claims (5)

1. insulation adhesion sample radial cuts device, including base (8), top board (3), travel(l)ing rest (5), column (6), handwheel (1) and wheel shaft (9), it is characterised in that described column (6) two ends are separately positioned on described base (8) and top board (3)；Described travel(l)ing rest (5) is sleeved on described column (6)；Described wheel shaft (9) is arranged on described top board (3), and top is fixing with described handwheel (1) to be connected, and threadeds with described travel(l)ing rest (5) in bottom；Described travel(l)ing rest (5) bottom is provided with blade shaft (12), at least provided with two blades (11,13) on described blade shaft (12)；Described base (8) is provided with a pair axis of rolling (7) parallel with described blade shaft (12).

2. insulation adhesion sample radial cuts device as claimed in claim 1, it is characterised in that one end of described base (8) is additionally provided with sample locating dowel (10).

3. insulation adhesion sample radial cuts device as claimed in claim 1, it is characterised in that connected by clutch shaft bearing (4) between described travel(l)ing rest (5) and column (6).

4. insulation adhesion sample radial cuts device as claimed in claim 1, it is characterised in that connected by the second bearing (2) between described wheel shaft (9) and top board (3).

5. the insulation adhesion sample radial cuts device as described in claim 1-4 any one, it is characterised in that described column (6) is 3-4.