Steel tape armored composite cable for mining machinery
By using multiple small area connecting pipes and heat dissipation holes in mining machinery cables, combined with the use of protection springs and return springs, the problem of temperature increase and mechanical damage of cables in harsh environments is solved, and the use of cables is extended life.
Patent Information
- Application Number
- CN202421103896.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-20
- Publication Date
- 2025-01-17
- Estimated Expiration
- 2034-05-20
AI Technical Summary
Cables for mining machinery are prone to damage in harsh environments, the conductor core temperature rises and needs to be replaced frequently, resulting in increased usage and short scrapping cycle.
A composite cable of steel strip armor for mining machinery was designed, using multiple small-area insulating material connecting pipes to disperse the conductor core, and a heat dissipation hole and protective spring are installed to relieve temperature and mechanical stress. The connecting head and connecting pipe are reset. Springs and push rods provide protection and connection.
It effectively reduces the temperature and mechanical damage of the conductor core, extends the service life of the cable, and reduces the replacement frequency.
Smart Images
Figure CN222365419U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the field of cables, and in particular relates to a steel belt armored composite cable for mining machinery. Background Art
[0002] With the increasing mining capacity and equipment capacity of mining machinery, the use of mining cables is also increasing.
[0003] However, the current carrying capacity of a cable is usually related to the cross-sectional area of the conductor core. When the current increases, the temperature of the conductor core will increase, causing damage to the conductor core.
[0004] Moreover, since the working environment of mining machinery cables is extremely harsh and they need to be moved frequently during use, the cables are frequently subjected to heavy friction, stamping, high-intensity tension and torsion during work. The scrap cycle is very short and they need to be replaced frequently. Utility Model Content
[0005] The utility model provides a steel belt armored composite cable for mining machinery, so as to solve the problems that the existing cables are not durable and the conductor core is easily damaged.
[0006] The utility model discloses a steel belt armored composite cable for mining machinery, comprising: a connector and a connecting tube, one end of the connector is fixedly connected to one end of the connecting tube, and the other end of the connector is provided with a through hole; the connector comprises a connecting cover and a connecting rod, the connecting cover is a hollow tube body, the through hole is provided on the side wall of one end of the connecting cover, the connecting cover is coaxially sleeved on the outside of the connecting rod and is slidably connected thereto; a protective spring is coaxially sleeved along the outer edge of the connecting tube, and a protective cover is provided outside the protective spring; a plurality of heat dissipation holes are provided on the outer surface of the connecting tube along the connecting tube.
[0007] Furthermore, one end of the connecting rod is fixedly connected to a plurality of push rods along the circumferential direction of the connecting rod, and a plurality of limiting grooves corresponding to the push rods are provided on the outer side of the connecting cover along the circumferential direction of the connecting cover, and the push rods pass through the connecting cover through the limiting grooves.
[0008] Furthermore, a return spring is provided on the outer coaxial sleeve of the connecting rod, one end of the return spring is fixedly connected to the outer wall of the connecting rod, and the other end is fixedly connected to the inner wall of one end of the connecting cover having a through hole.
[0009] Furthermore, two ends of the connecting pipe are fixedly connected to two ends of the protective cover, and the protective spring is arranged between the outer wall of the connecting pipe and the inner wall of the protective cover.
[0010] Furthermore, a plurality of connecting tubes are provided in the connecting tube along the length direction, and one end of the connecting tube is connected with the other end of the connecting cover; and the connecting tube is solid and is made of insulating material.
[0011] Furthermore, the heat dissipation hole passes through the wiring tube and the connecting tube.
[0012] Furthermore, the protective cover is made of transparent, windproof and waterproof material.
[0013] Furthermore, a one-way valve is correspondingly installed at the heat dissipation hole.
[0014] The beneficial effects of the utility model are:
[0015] By setting the heat dissipation holes, the temperature generated by the wire core in the connection tube during operation is dissipated into the protective cover, which can buffer the temperature to a certain extent. The setting of the protective spring can alleviate the stamping and torsional tension received by the cable during use to a certain extent, and play a protective role on the connection tube. The setting of the reset spring at the connector can shorten the distance that the connecting rod protrudes from the connection cover to the greatest extent, thereby minimizing the wear of the connecting rod due to the harsh environment. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 : The utility model is a three-dimensional Figure 1 ;
[0017] Figure 2 : The utility model is a three-dimensional Figure 2 ;
[0018] Figure 3 : A cross-sectional view of the connector of the utility model;
[0019] Figure 4 : A cross-sectional view of the connecting pipe of the present invention.
[0020] Description of Reference Numerals
[0021] 1. Connector; 11. Connecting rod; 12. Reset spring; 13. Push rod; 14. Connecting cover; 2. Connecting pipe; 21. Wire pipe; 22. Heat dissipation hole; 3. Protective spring; 4. Protective cover. DETAILED DESCRIPTION
[0022] In order to make the above and other purposes, features and advantages of the present invention more obvious and easy to understand, the following is a detailed description of the preferred embodiments of the present invention in conjunction with the accompanying drawings as follows:
[0023] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.
[0024] The utility model embodiment provides a steel belt armored composite cable for mining machinery, such as Figure 1-4 As shown, it includes: a connecting head 1 and a connecting tube 2, one end of the connecting head 1 is fixedly connected to one end of the connecting tube 2, the connecting head 1 includes a connecting cover 14 and a connecting rod 11, the connecting cover 14 is a hollow tube body, a through hole is opened on the side wall of one end of the connecting cover 14, and the connecting rod 11 is slidably set in the connecting cover 14 through the through hole of the connecting cover 14.
[0025] Please refer to Figure 1-Figure 3 The size of the through hole is consistent with that of the connecting rod 11, and both are smaller than that of the connecting cover 14, so a part of the connecting rod 11 is naturally engaged in the through hole.
[0026] One end of the connecting rod 11 is fixedly connected to a plurality of push rods 13 along the circumferential direction of the connecting rod 11 , and a plurality of limiting grooves corresponding to the push rods 13 are provided on the outer side of the connecting cover 14 along the circumferential direction of the connecting cover 14 , and the push rods 13 pass through the connecting cover 14 through the limiting grooves.
[0027] The connecting rod 11 and the connecting cover 14 slide relative to each other. When the connector 1 needs to be connected, the push rod 13 can cooperate with the outer wall of one end of the connecting cover 14 to squeeze the soft connecting tube 2, so that the connecting cover 14 slides and exposes the connecting end of the connecting rod 11. Then, electrical connection is performed through the corresponding connection method.
[0028] The connection method can be selected according to the common connection methods in the prior art, such as: snap-on type, knob type, etc. The design here belongs to common knowledge, and the utility model will not be elaborated.
[0029] The other end of the connecting rod 11 is coaxially sleeved with a return spring 12 along the outside of the connecting rod 11. One end of the return spring 12 is fixedly connected to the outer wall of the connecting rod 11, and the other end is fixedly connected to the inner wall of one end of the connector 1 with a through hole.
[0030] The normal state of the reset spring 12 is the state when the push rod 13 is located at one end of the limiting groove. When the connecting cover 14 slides, the reset spring 12 is driven to undergo elastic deformation to generate elastic force.
[0031] When the connecting rod 11 is connected, the thrust of the push rod 13 is removed, and the connecting cover 14 rebounds in the opposite direction due to the elastic force, so that the connecting rod 11 is maximally contracted in the connecting cover 14, thereby protecting the connecting rod 11.
[0032] Please refer to Figure 1 , Figure 2 and Figure 4 As shown, the outer coaxial sleeve of the connecting pipe 2 is provided with a protective spring 3, and the outer sleeve of the protective spring 3 is provided with a protective cover 4. The protective spring 3 is provided to enhance the rigid protection of the entire connecting pipe 2, and to resist the wear caused by bending, collision, etc. to a great extent.
[0033] A plurality of connecting tubes 21 are arranged in the connecting tube 2 along the length direction. One end of the connecting tube 21 is connected to the connecting cover 14 . The conductor core in the connecting tube is fixedly connected to the connecting rod 11 arranged in the connecting cover 14 through the connecting tube 21 .
[0034] The connecting tube 2 is solid and made of insulating material, so that the conductive wires distributed in different connecting tubes 21 will not be subject to electromagnetic interference with each other. And evenly distributing the bundled wires in multiple connecting tubes 21 can greatly reduce the cross-sectional area of the wire core, thereby reducing the temperature.
[0035] The existing single wire connection tube is changed into a wire with multiple small wire connection tubes 2. The wire cores originally concentrated into a bundle are divided into multiple strands, which are respectively placed in different wire connection tubes of the connecting tube made of insulating material. In this way, the interference between the wire cores of different strands of wires is isolated, and the cross-sectional area of the wire cores is reduced, which reduces the temperature generated to a certain extent.
[0036] A heat dissipation hole 22 penetrating the wall of the connecting tube 2 is provided on one side of each connecting tube 21 near the edge of the connecting tube 2. In this way, the high temperature generated by the working of the wire can be alleviated by increasing the air flow space while reducing the cross-sectional area.
[0037] There are multiple groups of heat dissipation holes 22, and the number of groups corresponds to the number of connecting tubes 21, that is, each connecting tube 21 is provided with a group of heat dissipation holes 22, and each group of heat dissipation holes 22 includes multiple heat dissipation holes evenly arranged along the axial direction of the connecting tube 21. In order to ensure the heat dissipation efficiency, the cross section of the heat dissipation holes 22 in this embodiment is a trapezoid with a wide inside and a narrow outside, which is more conducive to the discharge of hot air. A one-way valve is installed on the heat dissipation hole 22 to allow the heat in the connecting tube 21 to escape into the protective cover 4, but the liquid water droplets generated in the protective cover 4 cannot flow back into the protective cover 4.
[0038] The technology of using cold and hot air flows to dissipate heat is common knowledge. This embodiment only lists a more effective way. Those skilled in the art can adjust the shape and arrangement density of the through holes based on the existing technology, and the utility model does not limit this.
[0039] As for the working principle of the one-way air valve, the prior art is also mature, and the present utility model will not go into details.
[0040] The two ends of the connecting pipe 2 are fixedly connected to the two ends of the protective cover 4 , and the protective spring 3 is arranged between the outer wall of the connecting pipe 2 and the inner wall of the protective cover 4 .
[0041] The protective cover 4 is the outermost layer and is made of a transparent, high-density, windproof and waterproof material. This not only can resist the wear and tear caused by wind and bad weather, but also makes it easier to observe the status of the internal protective spring 3 and replace it in time to prevent damage to the internal circuit.
[0042] The protective cover 4 and the connecting tube 2 are connected in an absolutely watertight manner to prevent moisture from penetrating into the protective cover 4 and then affecting the internal conductor core through the heat dissipation holes 22 .
[0043] In the several embodiments provided in this application, it should be understood that the disclosed device can be implemented in other ways.
[0044] The utility model is achieved in this way:
[0045] When the connector 1 is connected, the push rod 13 is used to slide the connection cover 14 to expose the connector, and the connector is connected to a power source or other cables through a predetermined connection method. After fixing, the push handle is released, and the connector 1 is retracted into the connection cover 14 to the maximum extent.
[0046] After power is turned on, the multiple conductive wires arranged in the connecting tube 21 generate high-temperature airflow, which is discharged to the space between the protective cover 4 and the connecting tube 2 through the heat dissipation holes 22, thereby reducing the temperature generated by the wires during operation.
[0047] Other technical features not limited in the above embodiments are common knowledge, and those skilled in the art can freely choose them when implementing this patent, and this utility model does not limit them.
[0048] For technical features that are not disclosed in detail, such as the connection method of the cable connecting rod, etc., the utility model does not elaborate on them simply because they do not belong to the main technical problems solved by the present invention and they themselves do not belong to the technical features that must be limited by the present invention. This does not mean that the technical features disclosed by the present invention are insufficient.
[0049] The above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit the protection scope of the utility model. Obviously, the described embodiments are only some embodiments of the utility model, rather than all embodiments. Based on these embodiments, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
Claims
1. A steel belt armored composite cable for mining machinery, characterized in that: include: A connector (1) and a connector tube (2), wherein one end of the connector (1) is fixedly connected to one end of the connector tube (2), and the other end of the connector (1) is provided with a through hole; The connector (1) comprises a connecting cover (14) and a connecting rod (11); the connecting cover (14) is a hollow tube; the through hole is formed on a side wall at one end of the connecting cover (14); the connecting cover (14) is coaxially sleeved on the outside of the connecting rod (11) and is slidably connected thereto; A protective spring (3) is coaxially sleeved on the outer edge of the connecting pipe (2), and a protective cover (4) is disposed on the outer sleeve of the protective spring (3); The outer surface of the connecting pipe (2) is provided with a plurality of heat dissipation holes (22) along the connecting pipe (2).
2. The steel belt armored composite cable for mining machinery according to claim 1, characterized in that: One end of the connecting rod (11) is fixedly connected to a plurality of push rods (13) along the circumferential direction of the connecting rod (11); a plurality of limiting grooves corresponding to the push rods (13) are provided on the outer side of the connecting cover (14) along the circumferential direction of the connecting cover (14); and the push rods (13) pass through the connecting cover (14) through the limiting grooves.
3. The steel belt armored composite cable for mining machinery according to claim 2, characterized in that: The outer coaxial sleeve of the connecting rod (11) is provided with a return spring (12), one end of the return spring (12) is fixedly connected to the outer wall of the connecting rod (11), and the other end is fixedly connected to the inner wall of one end of the connecting cover (14) provided with a through hole.
4. The steel belt armored composite cable for mining machinery according to claim 1, characterized in that: The two ends of the connecting pipe (2) are fixedly connected to the two ends of the protective cover (4), and the protective spring (3) is arranged between the outer wall of the connecting pipe (2) and the inner wall of the protective cover (4).
5. The steel belt armored composite cable for mining machinery according to claim 4, characterized in that: A plurality of connection tubes (21) are provided in the connection tube (2) along the length direction, one end of the connection tube (21) is connected to the other end of the connection cover (14); and the connection tube (2) is solid and is made of insulating material.
6. The steel belt armored composite cable for mining machinery according to claim 5, characterized in that: The heat dissipation hole (22) passes through the connecting tube (21) and the connecting tube (2).
7. The steel belt armored composite cable for mining machinery according to claim 5, characterized in that: The protective cover is made of transparent, windproof and waterproof material.
8. The steel belt armored composite cable for mining machinery according to claim 1, characterized in that: A one-way valve is correspondingly installed at the heat dissipation hole (22).