Insulation shrink sleeve for motor cable joint

Abstract

The utility model provides an insulating shrink sleeve for a motor cable joint, comprising an insulating rod and an insulating sheath, wherein the end of the insulating rod is provided with a plurality of blind holes for accommodating a copper wire joint; one end of the insulating sheath is sleeved on one end of the insulating rod having the blind holes and is fixedly connected to the insulating rod, and the other end of the insulating sheath has a tightening belt, and the tightening belt is fixedly sleeved on the outside of the cable joint. Compared with the prior art, the present solution uses an insulating shrink sleeve for a motor cable joint to conveniently and quickly handle the insulation problem of the cable joint, replacing the insulating tape, and is convenient and fast to operate, labor-saving and time-saving, safe and feasible, avoiding the potential safety hazards of on-site operators during operation, improving the efficiency of inspection and maintenance, and reducing operation and maintenance costs, thereby achieving cost reduction and efficiency improvement.

Description

Technical Field

[0001] The utility model belongs to the technical field of cable insulation, in particular to an insulating shrink sleeve for a motor cable joint. Background Art

[0002] At present, when inspecting and repairing transmission equipment at the production site, after dismantling the on-site motor, it is necessary to insulate the exposed copper wire part of the motor cable connector to prevent accidents such as circuit short circuit and electric shock caused by wrong power supply. The usual operation method is: wrap the exposed part of each copper wire connector with insulating tape (or adhesive tape). Generally, the cable structure of a three-phase motor is four copper wire connectors (usually the power motor cable connector is ABC three-phase three wires, plus P one grounding protection wire). Wrap the insulating tape (or adhesive tape) separately, and then wrap the four copper wire connectors wrapped with insulating tape together with insulating tape.

[0003] In actual application, it is found that when the above method is used to insulate the motor cable connector, a long insulating tape is needed to wrap the exposed parts of the four copper wire connectors of the three-phase motor respectively, which wastes a lot of insulating tape and is not conducive to cost saving. In addition, the insulating tape is wrapped around the copper wire connector in circles, and the wrapping process of the insulating tape takes a relatively long time, which is not conducive to improving the inspection and maintenance efficiency.

[0004] When the motor is overhauled and the cable connector is to be reconnected (cable), the cable connector wrapped with insulating tape needs to be untied (removed); under normal circumstances, on-site electricians can untie and remove the wrapped insulating tape by hand. The operation process is: first untie the outer wrapped insulating tape, and then remove the insulating tape on the four copper wire connectors respectively. However, when untying the insulating tape, it will be found that due to the strong viscosity of the insulating tape, the wrapped tape head is not easy to separate, and the operation time is relatively long. Most electricians will use electrician knives or other knives to cut the wrapped insulating tape, and then separate and remove it. There are certain safety hazards in the process; because the cable head wire diameter is relatively small, it is easy to hurt fingers.

[0005] When removing the insulating tape on the motor cable connector, it is not difficult to see that the above method of insulating the motor cable connector has the following defects: first, it takes a long time and is labor-intensive and time-consuming; second, there are certain safety operation hazards, which can easily injure the operator's fingers; third, there are a lot of discarded insulating tapes, which will affect the cleaning of the site and increase the site cleaning time. Utility Model Content

[0006] In view of the above-mentioned shortcomings of the prior art, the purpose of the utility model is to provide an insulating shrink sleeve for a motor cable connector, which is used to solve the problem that the process of insulating and removing the insulation of the motor cable ends in the prior art is time-consuming, labor-intensive and has great safety hazards.

[0007] In order to achieve the above-mentioned purpose and other related purposes, the technical solution of the utility model is as follows:

[0008] An insulating shrink sleeve of a motor cable connector, used for connecting with a sheath, comprising:

[0009] An insulating rod, the end of which is provided with a plurality of blind holes for accommodating copper wire connectors;

[0010] An insulating leather sleeve, one end of which is sleeved on one end of the insulating rod having the blind hole and fixedly connected to the insulating rod, and the other end of the insulating leather sleeve is provided with a tightening belt, and the tightening belt is fixedly sleeved on the outside of the cable connector.

[0011] Optionally, a groove ring is provided on the outside of the insulating rod, and one end of the insulating leather sleeve is placed on the groove ring and fixed in the groove ring by a fixing belt.

[0012] Optionally, the exterior of the insulating rod has a wavy protrusion.

[0013] Optionally, the number of the blind holes is 4-8.

[0014] Optionally, one end of the insulating rod away from the blind hole is hemispherical.

[0015] Optionally, the distance from the bottom of the blind hole to the end of the insulating rod away from the blind hole is 5-10 mm.

[0016] Optionally, the diameter of the blind hole is 1.5 times the diameter of the copper wire, and the outer diameter of the insulating rod is larger than the outer diameter of the cable connector.

[0017] Optionally, the insulating rod is made of insulating resin or insulating bakelite.

[0018] Optionally, the insulating leather case is made of insulating artificial leather or genuine leather.

[0019] Optionally, both ends of the tightening band have fixing parts, and the insulating leather sleeve can be fixed on the cable after the two ends of the tightening band are fixed by the fixing parts.

[0020] In the utility model, during the dismantling and reinstallation of the transmission motor, the leather cover in the scheme can be used to protect the cable joint of the motor to keep it in an isolated and insulated state; specifically, after the motor is dismantled, the cable joint is exposed, and the tightening belt can be opened to insert the copper wires on the cable joint into the blind holes of the insulating rod one by one, and the insulating leather cover is placed on the outside of the cable joint, and the tightening belt is fixed on the cable with the insulating shell to achieve tight wrapping of the cable joint; since both the insulating rod and the insulating leather cover have an insulating effect, after the shrink sleeve tightly wraps the cable joint, the cable joint can have a good insulation effect. If the motor needs to be reinstalled, the insulating leather cover is removed from the cable joint to restore the exposure of the cable joint for connecting the line. Compared with the prior art, the present scheme uses an insulating shrink sleeve for the motor cable joint to very conveniently and quickly deal with the insulation problem of the cable joint, replacing the insulating tape. It is convenient and fast to operate, saves labor and time, is safe and feasible, avoids the safety hazards of on-site operators, improves the work efficiency of inspection and maintenance, reduces the time for cleaning the on-site site, reduces the cost of operation and maintenance, and achieves cost reduction and efficiency improvement. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a side view of an exemplary insulating shrink sleeve of a motor cable connector of the utility model;

[0022] Figure 2 A side cross-sectional view of an exemplary insulating shrink sleeve of a motor cable connector of the utility model;

[0023] Figure 3 This is a schematic diagram of an end portion of an insulating rod in an insulating shrink sleeve of an exemplary motor cable connector of the utility model;

[0024] Figure 4 The utility model is a schematic diagram of an exemplary use state of an insulating shrink sleeve of a motor cable connector.

[0025] The description of the reference numerals in the embodiments includes:

[0026] Insulating rod 10, blind hole 11, groove ring 12, protrusion 13,

[0027] Insulating leather cover 20, tightening belt 21, fixing belt 22,

[0028] Cable connector 30 and copper wire connector 31 . DETAILED DESCRIPTION

[0029] In the following description, a large number of specific details are given to provide a more thorough understanding of the utility model. However, it is obvious to those skilled in the art that the utility model can be implemented without one or more of these details. In other examples, in order to avoid confusion with the utility model, some technical features known in the art are not described.

[0030] It should be understood that the utility model can be implemented in different forms and should not be construed as being limited to the embodiments presented herein. On the contrary, providing these embodiments will make the disclosure thorough and complete, and fully convey the scope of the utility model to those skilled in the art. In the accompanying drawings, the same reference numerals represent the same components throughout.

[0031] The specific structure of the insulating shrink sleeve of a motor cable connector in the utility model is combined with reference to Figures 1 to 4 , the insulating shrink sleeve of the motor cable connector comprises:

[0032] An insulating rod 10, wherein a plurality of blind holes 11 for accommodating copper wire connectors 31 are formed at the end of the insulating rod 10;

[0033] The insulating leather sleeve 20 has one end which is sleeved on one end of the insulating rod 10 having the blind hole 11 and is fixedly connected to the insulating rod 10 . The other end of the insulating leather sleeve 20 has a tightening belt 21 which is fixedly sleeved on the outside of the cable connector 30 .

[0034] Among them, the insulating rod 10 can be made of an insulating material with a certain elasticity, such as rubber, which facilitates the smooth insertion of the copper wire interface into the blind hole 11. The insulating leather sleeve 20 is in a cylindrical shape. One end of the insulating sleeve is fixed on the insulating rod 10 to wrap the end of the blind hole 11, and the other end can be put on the cable connector 30 and fixed by the tightening belt 21.

[0035] In the actual implementation process, after the motor is dismantled, the cable joint 30 is exposed, and the tightening band 21 on the shrink sleeve can be opened, and the insulating leather sleeve 20 can be turned back to the insulating rod 10 to expose the blind hole 11 on the insulating rod 10, and then the copper wires on the cable joint 30 are inserted into the blind hole 11 of the insulating rod 10 one by one to the bottom of the blind hole 11, and the insulating leather sleeve 20 is turned back to cover the cable joint 30, and the end of the insulating leather sleeve 20 is fixed to the cable with the insulating shell by the tightening band 21, so that the cable joint 30 is tightly wrapped, so that the motor cable reaches a good insulation state; because the insulating rod 10 and the insulating leather sleeve 20 both have an insulating effect, the shrink sleeve can wrap the cable joint 30 tightly, so that the cable joint 30 has a good insulation effect. If the motor needs to be reinstalled, hold the cable part of the motor cable joint 30, loosen the tightening band 21, hold the tail of the insulating rod 10, and remove the insulating rod 10 from the cable joint 30, so that the motor cable joint 30 can be exposed for connecting the line. It can be seen from the removal and reinstallation operations of the shrink sleeve that the operation is simple and convenient, labor-saving and time-saving, and very practical.

[0036] In some embodiments, the outer portion of the insulating rod 10 is provided with a groove ring 12, one end of the insulating leather sleeve 20 is placed on the groove ring 12 and fixed in the groove ring 12 by a fixing belt 22. For example, Figure 1 , Figure 2 , Figure 4 As shown, in order to firmly connect a section of the insulating leather sleeve 20 with the insulating rod 10, a fixing belt 22 and a groove ring 12 are used to embed the insulating leather sleeve 20 into the insulating rod 10 and fix them, so that the two can be firmly fixed and effectively prevented from falling off.

[0037] In some embodiments, the insulating rod 10 has a wave-shaped protrusion 13 on the outside. For example, Figure 1 , Figure 2 , Figure 4 As shown, the exterior of the insulating rod 10 is processed into a wavy shape, which is convenient for operation and not prone to slipping.

[0038] In some embodiments, the number of the blind holes 11 is 4-8. Figure 3 , Figure 4 As shown, a general three-phase motor has four copper wire connectors (wire ears) 31, including three wires for three phases ABC and one ground wire P. In order to make the shrink sleeve more applicable, the blind holes 11 in this solution are set to 4-8. Specifically, they can be set to 4, and of course they can also be set to 5, 6, 7, or 8. They can be adaptively adjusted according to actual usage requirements.

[0039] In some embodiments, the end of the insulating rod 10 away from the blind hole 11 is hemispherical. Figure 1 , Figure 2 , Figure 4 As shown, the end of the insulating rod 10 away from the blind hole 11 will be exposed when in use. When the motor is reinstalled, it is necessary to hold the outside of the insulating rod 10 to remove the shrink sleeve and set the end to a hemispherical shape, which effectively reduces safety hazards.

[0040] In some embodiments, the distance from the bottom of the blind hole 11 to the end of the insulating rod 10 away from the blind hole 11 is 5-10 mm. Figure 1 , Figure 2 , Figure 4 As shown, the insulation effect of the insulating rod 10 reaches a better state.

[0041] In some embodiments, the aperture of the blind hole 11 is 1.5 times equal to the diameter (width) of the copper wire (wire ear), and the outer diameter of the insulating rod 10 is greater than the outer diameter of the cable connector 30. For example, Figure 1 , Figure 2 , Figure 4 As shown, the aperture of the blind hole 11 is determined according to the specifications of the copper wire joint (wire ear) 31 to accommodate the copper wire joint (wire ear) 31. The outer diameter of the insulating rod 10 is usually larger than the outer diameter of the cable joint 30, which facilitates better wrapping of the cable joint 30 to achieve a better insulation effect.

[0042] In some embodiments, the insulating rod 10 is made of insulating resin or bakelite. Figures 1 to 4 , which is convenient for operation and not easy to slip.

[0043] In some embodiments, the insulating leather case 20 is made of insulating artificial leather or genuine leather. Figure 1 , Figure 2 , Figure 4 As shown, artificial leather or genuine leather is more durable, helps to protect against rain and moisture, and has a good insulation effect.

[0044] In some embodiments, the tightening band 21 has fixing parts at both ends of the outer side, and the insulating sheath 20 can be fixed on the cable by fixing the two ends of the tightening band 21 through the fixing parts. Figure 1 , Figure 2 , Figure 4 As shown, specifically, the tightening belt 21 adopts an adhesive belt structure similar to the outside of an umbrella, wherein a section of the tightening belt 21 is fixed to the outside of the insulating leather case 20 by sewing or pasting, and the fixing portion can adopt Velcro or a buckle. After the insulating leather case 20 wraps the cable, the tightening belt 21 is wrapped around the outside of the insulating leather case 20 and then fixed by the fixing portion, so that the insulating leather case 20 can be firmly wrapped and fixed on the cable.

[0045] The above embodiments are merely illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. Anyone familiar with the technology may modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by a person of ordinary skill in the art without departing from the spirit and technical concept disclosed in the present invention shall still be covered by the claims of the present invention.

Claims

1. An insulating shrink sleeve for a motor cable connector, characterized in that: include: An insulating rod, the end of which is provided with a plurality of blind holes for accommodating copper wire connectors; An insulating leather sleeve, one end of which is sleeved on one end of the insulating rod having the blind hole and fixedly connected to the insulating rod, and the other end of the insulating leather sleeve is provided with a tightening belt, and the tightening belt is fixedly sleeved on the outside of the cable connector.

2. The insulating shrink sleeve for a motor cable connector according to claim 1, characterized in that: A groove ring is arranged on the outside of the insulating rod, and one end of the insulating leather sleeve is sleeved on the groove ring and fixed in the groove ring by a fixing belt.

3. The insulating shrink sleeve for a motor cable connector according to claim 1, characterized in that: The insulating rod has a wave-shaped convex portion on its exterior.

4. The insulating shrink sleeve for a motor cable connector according to claim 1, characterized in that: The number of the blind holes is 4-8.

5. The insulating shrink sleeve for a motor cable connector according to claim 1, characterized in that: One end of the insulating rod away from the blind hole is hemispherical.

6. The insulating shrink sleeve for a motor cable connector according to claim 5, characterized in that: The distance from the bottom of the blind hole to the end of the insulating rod away from the blind hole is 5-10 mm.

7. The insulating shrink sleeve for a motor cable connector according to claim 6, characterized in that: The aperture of the blind hole is 1.5 times the diameter of the copper wire, and the outer diameter of the insulating rod is larger than the outer diameter of the cable connector.

8. The insulating shrink sleeve for a motor cable connector according to claim 1, characterized in that: The insulating rod is made of insulating resin or insulating bakelite.

9. The insulating shrink sleeve for a motor cable connector according to claim 1, characterized in that: The insulating leather case is made of insulating artificial leather or genuine leather.

10. An insulating shrink sleeve for a motor cable connector according to any one of claims 1 to 9, characterized in that: The two ends of the tightening band are provided with fixing parts, and the insulating leather sleeve can be fixed on the cable after the two ends of the tightening band are fixed by the fixing parts.

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