CN210156137U

CN210156137U - Tensile cable for thin coal seam coal mining machine

Info

Publication number: CN210156137U
Application number: CN201920644528.0U
Authority: CN
Inventors: 董长明
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-05-03
Filing date: 2019-05-03
Publication date: 2020-03-17
Anticipated expiration: 2029-05-03

Abstract

The utility model discloses a tensile cable for a thin coal seam coal mining machine, which comprises a cable body, wherein the inside of the cable body is triangular and is provided with three power core conductors, the outer parts of the three power core conductors are all sleeved with a third insulating layer, the inside of the cable body is inverted triangular and is provided with three ground core conductors, the outer parts of the three ground core conductors are all sleeved with a second insulating layer, and each ground core conductor is respectively tangent with two adjacent power core conductors, the utility model is provided with a clamping pin, a locking ring, a clamping ball and a tension spring, so that the clamping and fixing of the cable body are realized, the cable body is prevented from being repeatedly wound, the dragging and treading of the cable is avoided, the service life of the cable body is prolonged, a metal shielding layer is arranged, the electromagnetic interference between the wires in the cable and the induction interference voltage between the wires from the outside are isolated, the cable normal work of being convenient for has improved the work efficiency of cable.

Description

Tensile cable for thin coal seam coal mining machine

Technical Field

The utility model belongs to the technical field of the coal-winning machine, concretely relates to tensile type cable for thin seam coal-winning machine.

Background

Cables are generally rope-like cables made by stranding several wires or groups of at least two wires, each group of wires being insulated from each other and usually twisted around a center, covered with a highly insulating covering throughout, and erected in the air or installed underground, underwater for telecommunication or power transmission.

However, the tensile cable for the thin coal seam mining machine in the market still has certain defects in the use process, for example, the cable is long and inconvenient to fix, is easy to damage, and has a short service life.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a tensile type cable for thin coal seam coal mining machine to solve the long not convenient to fix of cable that proposes in the above-mentioned background art, damaged easily, life is low, and in addition, the cable produces electromagnetic interference easily between the wire in the course of the work, and the cable receives external electromagnetic interference easily, influences the problem of the normal work of cable.

In order to achieve the above object, the utility model provides a following technical scheme: a tensile cable for a thin coal seam coal mining machine comprises a cable body, wherein three power core conductors are arranged in the cable body in a triangular mode, third insulating layers are sleeved outside the three power core conductors, three ground core conductors are arranged in the cable body in an inverted triangular mode, a first insulating layer is arranged on the inner wall of the cable body, second insulating layers are sleeved outside the three ground core conductors, each ground core conductor is tangent to two adjacent power core conductors, a metal shielding layer is arranged inside the first insulating layer, a plurality of locking grooves are formed in the outer wall of the cable body in a rectangular array mode, locking rings are arranged inside the locking grooves, an access end is arranged at one end of the cable body, an outlet end is arranged at one end, opposite to the access end, of the cable body, and two clamping feet are symmetrically connected to the bottom end of each locking ring, spring grooves are formed in the middle positions of the inner portions of the clamping feet, extension springs are fixed in the two spring grooves, and the clamping balls are connected to the opposite ends of the extension springs.

Preferably, the clamping ball and the clamping foot are elastically connected through an extension spring.

Preferably, the metal shielding layer is internally woven into a net-shaped metal film.

Preferably, the diameter of the cross section of the locking ring is matched with that of the cross section of the locking groove.

Preferably, the two clamping legs are distributed in a splayed shape, so that an opening is formed between the two clamping legs.

Compared with the prior art, the beneficial effects of the utility model are that:

(1) the utility model discloses the card foot, the locking collar, card ball and extension spring, in the use, the card foot of the inside locking collar of workman's accessible locked groove presss from both sides the cable body card on the mount of coal-winning machine, in the clamping in-process, the inboard card ball of card foot contacts with the coal-winning machine mount and receives the extrusion force, make it shrink under extension spring's elastic action, when card foot and coal-winning machine mount are complete the block, the extrusion force that the card ball received the coal-winning machine mount is balanced with the elasticity that receives extension spring, card foot and coal-winning machine mount pass through the card ball chucking this moment, and then realize fixing the cable body, prevent the lengthy emergence winding of cable body, avoid the cable body to drag ground and step on badly, the life of cable body has been prolonged.

(2) The utility model discloses set up the metallic shield layer, in the cable course of operation, the metallic shield net that the inside metallic shield layer of cable body was woven through its inside, electromagnetic interference between power core conductor and the earth core conductor in the isolated cable to make the cable can isolated external response interference voltage to power core conductor and earth core conductor with the shielding layer ground connection, so that the cable body normally works, and then improves the work efficiency of cable body.

Drawings

Fig. 1 is a schematic structural view of the present invention;

fig. 2 is a front view of the present invention;

FIG. 3 is a schematic structural view of the lock ring of the present invention;

fig. 4 is a partial enlarged view of the utility model at a;

in the figure: 1-a cable body; 2-an access end; 3-clamping feet; 4-locking ring; 5-connecting an output end; 6-locking the groove; 7-a second insulating layer; 8-ground core conductor; 9-a third insulating layer; 10-a power core conductor; 11-a card ball; 12-a metallic shielding layer; 13-a first insulating layer; 14-a spring groove; 15-extension spring.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-4, the present invention provides a technical solution: a tensile cable for a thin coal seam coal mining machine comprises a cable body 1, three power core conductors 10 are arranged inside the cable body 1 in a triangular mode, third insulating layers 9 are sleeved outside the three power core conductors 10, three ground core conductors 8 are arranged inside the cable body 1 in an inverted triangular mode, a first insulating layer 13 is arranged on the inner wall of the cable body 1, second insulating layers 7 are sleeved outside the three ground core conductors 8, each ground core conductor 8 is respectively tangent to two adjacent power core conductors 10, the three power core conductors 10 and the ground core conductors 8 can be in compact contact, when the cable body 1 is used, the power core conductors 10 and the ground core conductors 8 are prevented from loosening and deforming, a metal shielding layer 12 is arranged inside the first insulating layer 13, and a metal shielding net inside the metal shielding layer 12 is used, can isolate the electromagnetic interference between the wires in the cable, and the shielding layer is grounded to isolate the induction interference voltage of the cable to the wires, the outer wall of the cable body 1 is provided with a plurality of locking grooves 6 in a rectangular array, and the lock rings 4 are arranged inside the lock grooves 6, one end of the cable body 1 is provided with an access end 2, and one end of the cable body 1 opposite to the access end 2 is provided with an access end 5, the bottom end of the locking ring 4 is symmetrically connected with two clamping feet 3, the middle positions inside the two clamping feet 3 are both provided with spring grooves 14, and the inside of two spring grooves 14 all is fixed with extension spring 15, and the one end that two extension spring 15 are relative all is connected with card ball 11, and extension spring 15 utilizes its self elastic property can drive card ball 11 and stretch out and draw back to block 3 blocks of card foot on the mount of coal-winning machine, and then be convenient for cable body 1 is fixed.

In order to facilitate the expansion and contraction of the detent ball 11, in the present embodiment, it is preferable that the detent ball 11 and the detent pin 3 are elastically connected by a tension spring 15.

In order to realize that the metal shielding layer 12 shields electromagnetic interference between wires in the cable, in this embodiment, it is preferable that a metal film woven into a net shape is adopted inside the metal shielding layer 12.

In order to facilitate the installation and use of the locking ring 4, in the present embodiment, it is preferable that the cross-sectional diameter of the locking ring 4 matches the cross-sectional diameter of the locking groove 6.

In order to facilitate the clamping of the clamping legs 3 on the fixing frame of the coal mining machine, in the embodiment, preferably, the two clamping legs 3 are distributed in a splayed shape, so that an opening is formed between the two clamping legs 3.

The working principle is as follows: when the utility model is used, a worker firstly connects the access end 2 of the cable body 1 with an external power supply, then connects the output end 5 of the cable body 1 with a coal mining machine, after the connection is completed, the worker can clamp the cable body 1 on a fixing frame of the coal mining machine through the clamping pin 3 of the locking ring 4 in the locking groove 6, in the clamping process, the clamping ball 11 at the inner side of the clamping pin 3 is contacted with the fixing frame of the coal mining machine and is pressed by an extrusion force, so that the clamping pin is contracted under the elastic action of the tension spring 15, when the clamping pin 3 and the fixing frame of the coal mining machine are completely clamped, the clamping ball 11 is pressed by the fixing frame of the coal mining machine and is balanced with the elastic force of the tension spring 15, at the moment, the clamping pin 3 and the fixing frame of the coal mining machine are clamped by the clamping ball 11, thereby fixing the cable body 1, preventing the cable body 1 from being twisted in, then the workman opens the coal-winning machine power, cable body 1 carries out work transmission power through inside three power core conductor 10 and earth core conductor 8, wherein first insulation layer 13, second insulation layer 7 and third insulation layer 9 play insulating effect, the inside metallic shield 12 of cable body 1 in addition is through its inside metal shielding net of weaving into, electromagnetic interference between power core conductor 10 and the earth core conductor 8 in the isolated cable, and make the cable can isolate the external induction interference voltage to power core conductor 10 and earth core conductor 8 with shielding layer ground connection, so that cable body 1 normally works, and then improve cable body 1's work efficiency.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a tensile type cable for thin coal seam coal mining machine, includes cable body (1), its characterized in that: the cable comprises a cable body (1), wherein three power core conductors (10) are arranged in the cable body (1) in a triangular mode, third insulating layers (9) are sleeved outside the three power core conductors (10), three ground core conductors (8) are arranged in the cable body (1) in an inverted triangular mode, first insulating layers (13) are arranged on the inner wall of the cable body (1), second insulating layers (7) are sleeved outside the three ground core conductors (8), each ground core conductor (8) is tangent to two adjacent power core conductors (10), a metal shielding layer (12) is arranged inside the first insulating layer (13), a plurality of locking grooves (6) are formed in the outer wall of the cable body (1) in a rectangular array mode, locking rings (4) are arranged inside the locking grooves (6), an access end (2) is arranged at one end of the cable body (1), and cable body (1) is provided with for the one end of incoming end (2) and connects output (5), the bottom symmetric connection of lock collar (4) has two calorie of feet (3), two spring groove (14) have all been seted up to the inside intermediate position department of calorie of foot (3), and the inside of two spring grooves (14) all is fixed with extension spring (15), two the relative one end of extension spring (15) all is connected with card ball (11).

2. The tensile cable for the thin coal seam coal mining machine according to claim 1, wherein: the clamping ball (11) is elastically connected with the clamping pin (3) through an extension spring (15).

3. The tensile cable for the thin coal seam coal mining machine according to claim 1, wherein: the metal shielding layer (12) is internally woven into a net-shaped metal film.

4. The tensile cable for the thin coal seam coal mining machine according to claim 1, wherein: the diameter of the cross section of the locking ring (4) is matched with that of the cross section of the locking groove (6).

5. The tensile cable for the thin coal seam coal mining machine according to claim 1, wherein: the two clamping legs (3) are distributed in a splayed shape, so that an opening is formed between the two clamping legs (3).