CN210897827U - Structure used between head of speed sensor and connector matched with rail vehicle - Google Patents

Abstract

A structure used between a head of a speed sensor and a connector matched with a rail vehicle comprises a locking pipe joint, an armored protecting pipe and a locking self-rotating pipe joint, wherein two ends of the armored protecting pipe are respectively connected with the locking pipe joint and the locking self-rotating pipe joint. The utility model has the advantages that: 1. the matched application of the locking pipe joint and the locking rotatable pipe joint can effectively solve the problem of installation distortion of the armored protective sleeve caused by high torsional rigidity, enhances the flexibility of on-site product installation, and effectively prevents the problem of cable fracture caused by excessive rotation of products. 2. By adopting the metal insert insulating sleeve, the problem that the head of the sensor is connected and conducted with the connector end through the metal braided reinforcing layer inside the armored protecting sleeve on the basis of realizing the original function is solved, and the shielding failure is avoided.

Description

Structure used between head of speed sensor and connector matched with rail vehicle

Technical Field

The utility model relates to a structure between speedtransmitter head and connector.

Background

The structure between the head of the existing speed sensor and the connector consists of a pipe joint, a corrugated hose (rubber sheath pipe) and other parts, wherein the pipe joint locks a cable and the corrugated hose (rubber sheath pipe) through a locking rubber part and a threaded cap. The corrugated hose can still rotate freely after the pipe joint is matched with the corrugated hose; after the pipe joint is matched with the rubber protecting sleeve, the rubber protecting sleeve cannot rotate.

The existing structure has the following defects: the existing sensor generally adopts a corrugated hose or a rubber sheath pipe to protect a cable, and the abrasion resistance and the tensile strength of the material of the corrugated hose (the rubber sheath pipe) are weaker than those of an armored sheath pipe, so that the reliability of the existing sensor to the application of the cable is still to be improved.

2. The two ends of the existing sensor adopting the corrugated hose are connected in a pipe joint fixing mode, but the corrugated hose and the pipe joint can rotate freely, so that the cable can be excessively twisted, the phenomenon that the cable core wire is broken or even broken is caused, and the signal transmission of the sensor is influenced. The two ends of the existing sensor of the rubber protective sleeve are connected and fixed in a locking mode, so that the rubber protective sleeve is in a twisted state when the sensor is installed on a vehicle, and the service life of the rubber protective sleeve is influenced.

Disclosure of Invention

The utility model aims to solve the technical problem that overcome the above-mentioned not enough of prior art and provide a structure between being used for supporting speedtransmitter head of rail vehicle and connector, make it can improve reliability and protective capacities of being connected between sensor head and connector.

The utility model provides a technical scheme that above-mentioned problem adopted does: a structure that is used for between supporting speed sensor head of rail vehicle and connector, it includes locking coupling, armor protecting pipe, locking autogyration coupling, and locking coupling and locking autogyration coupling are connected respectively to armor protecting pipe both ends.

Preferably, the locking pipe joint includes main part, waterproof circle B, compels tight nut B, fastening screw, insulating gasket, withhold the spacing ring, waterproof circle A, compels tight nut A, in the screw in armor protecting pipe behind the fastening screw passed insulating gasket, withhold the spacing ring and withhold outside the armor protecting pipe, tight nut A locks waterproof circle A to compel tight nut B after, compels tight nut B and locks waterproof circle B to the main part through the threaded connection main part, waterproof circle B holds the inside cable that passes tightly.

Preferably, the convex teeth on the buckling limiting ring and the groove at the end of the packing nut form clearance fit, so that the locking and rotation preventing functions are realized.

Preferably, a shielding spring is embedded in the main body, so that the locking pipe joint becomes a shielding locking pipe joint, the shielding layer of the cable is communicated with the outside, and the cable is flexibly applied to occasions with the requirements; the corresponding components may also be selected according to whether they are required to be connected to the cable shield.

Preferably, the fastening screw comprises an outer insulating sheath and an inner metal piece, and the inner metal piece is embedded in the outer insulating sheath.

Preferably, the bottom of the fastening screw metal part is provided with an inner hexagonal bayonet, and a common inner hexagonal wrench can be directly adopted to realize the assembly of the whole part and the armored protective sleeve.

Preferably, the buckle for clamping the metal piece is arranged on the external insulating sleeve, so that the phenomenon that the insulating sleeve falls off in the assembling process can be effectively avoided.

Preferably, the armored protective sleeve comprises an outer layer, a middle layer and an inner layer, wherein the outer layer and the inner layer are made of elastic flame-retardant materials, and the middle layer is woven by steel wires.

Preferably, the locking self-rotating pipe joint comprises a self-rotating main body, a self-rotating waterproof ring B, a rotatable main body, a self-rotating fastening screw, a self-rotating insulating gasket, a self-rotating buckling limiting ring, a self-rotating waterproof ring A and a self-rotating tightening nut A, wherein the self-rotating fastening screw penetrates through the self-rotating insulating gasket and then is screwed into the armored protective sleeve, the self-rotating buckling limiting ring is buckled and pressed out of the armored protective sleeve, the self-rotating tightening nut A locks the self-rotating waterproof ring A to the self-rotating tightening nut B, the self-rotating tightening nut B is connected with the self-rotating main body through threads to lock the self-rotating waterproof ring B to the self-rotating main body, and the self-rotating waterproof ring B holds the cable which the inner part penetrates.

Preferably, the rotatable main part includes base, locking piece, O type circle, jump ring, roating seat, and base and roating seat have two corresponding guide ways that have certain radian respectively, and the locking piece is put into to the guide way, and it is fixed with the jump ring after passing the roating seat after installing O type circle additional.

Compared with the prior art, the utility model has the advantages of: 1. the matched application of the locking pipe joint and the locking rotatable pipe joint can effectively solve the problem of installation distortion of the armored protective sleeve caused by high torsional rigidity, enhances the flexibility of on-site product installation, and effectively prevents the problem of cable fracture caused by excessive rotation of products.

2. By adopting the metal insert insulating sleeve, the problem that the head of the sensor is connected and conducted with the connector end through the metal braided reinforcing layer inside the armored protecting sleeve on the basis of realizing the original function is solved, and the shielding failure is avoided.

Drawings

Fig. 1 is a schematic structural diagram of a structure between a head and a connector of a speed sensor for a railway vehicle.

Fig. 2 is an exploded view of the shield and lock fitting of the present invention.

Fig. 3 is a schematic view illustrating a connection between a fastening screw and an armor sheath according to an embodiment of the present invention.

Fig. 4 is an assembly diagram of the buckling limiting ring according to the embodiment of the present invention.

Fig. 5 is a schematic view of a fastening screw structure and assembly according to an embodiment of the present invention.

Fig. 6 is an exploded view of an embodiment of the present invention locking a self-rotating pipe joint.

Fig. 7 is a schematic view of the structure and assembly of the rotatable body of the present invention.

Detailed Description

The present invention will be further explained with reference to the drawings and examples.

As shown in fig. 1, the structure used between the head of the speed sensor and the connector of the railway vehicle comprises a shielding locking pipe joint 1, an armored protecting pipe 2 and a locking self-rotating pipe joint 3.

The shielding locking pipe joint 1 is shown in fig. 1 and 2 and comprises an O-shaped ring 4, a main body 5, a shielding spring 6, a waterproof ring B7, a packing nut B8, a fastening screw 9, a plastic gasket 10, a buckling limiting ring 11, a waterproof ring A12 and a packing nut A13.

The fastening screw 9 penetrates through the plastic gasket 10 and then is screwed into the armored protective sleeve 2 by means of a tool; assembling the buckling limiting ring 11 on the armored protecting sleeve 2, buckling the buckling limiting ring 11 on the armored protecting sleeve 2 by using a buckling machine, wherein the convex teeth 111 on the buckling limiting ring 11 and the preformed groove 81 at the end of the packing nut B8 form clearance fit to play a role in locking and preventing rotation, and the assembly fit is shown in figure 4; after the waterproof ring A12 is locked to the fastening nut B8 by the fastening nut A13, water vapor outside the armored sheath can be isolated by the waterproof ring A12; after the packing nut B8 is screwed with the main body 5 to lock the waterproof ring B7 to the main body 5, the waterproof ring B7 can hold the cable passing through the inside tightly, and the functions of fixing, sealing and waterproofing are achieved.

The shielding spring 6 is embedded in the main body 5, and can be automatically attached to the shielding layer of the cable to realize shielding conduction due to the scalability. Of course, the shield spring 6 may not be embedded, so that the shield locking coupling 1 does not have a shielding function and only constitutes a general locking coupling.

The O-ring 4 is fitted over the body 5 for sealing the connection with the body 5.

Above-mentioned shielding locking coupling 1 can realize the dual function of locking cable and armor protecting pipe simultaneously, increases insulating cover through the fastening screw 9 at the armor protecting pipe simultaneously to solve the problem that sensor head shell and connector housing switched on through the inside metal woven reinforcement layer of armor protecting pipe, thereby avoid the product to become invalid because of the shielding reason.

As shown in fig. 5, the fastening screw 9 of the sheath pipe includes: the external insulating sheath 91 is made of high-temperature-resistant insulating material polytetrafluoroethylene PTFE, and is assembled with the internal metal piece 92 to form a metal insert, so that the internal metal piece is insulated and isolated in a physical isolation mode.

The fastening screw metalwork 92 bottom of above-mentioned armor protecting pipe is opened there is hexagon socket head cap bayonet 93, can directly adopt ordinary hexagon socket head cap spanner to realize the assembly of whole part and armor protecting pipe 2, and the buckle 94 on the external insulation cover can effectively avoid the emergence of the insulating cover phenomenon that drops in the assembling process.

The armored protective sleeve 2 comprises an outer layer, a middle layer and an inner layer (not shown in the figure), wherein the outer layer and the inner layer are both made of elastic flame-retardant materials, and the middle layer is woven by steel wires.

As shown in fig. 6, the locking self-rotating pipe joint 3 includes a self-rotating O-ring 14, a self-rotating body 15, a self-rotating waterproof ring B16, a rotatable body 17, a self-rotating fastening screw 18, a self-rotating plastic gasket 19, a self-rotating buckling limiting ring 20, a self-rotating waterproof ring a21, and a self-rotating tightening nut a22, and the connection mode between the components and the connection mode with the armored sheathing pipe 2 are the same as the connection mode and the locking mode of the shielding locking pipe joint 1, and will not be described in detail herein.

As shown in fig. 7, the rotatable body 17 includes a base 23, a locking block 24, an O-ring 25, a snap spring 26, and a rotary base 27, the base 23 and the rotary base 27 respectively have two corresponding guide grooves 231 and 271 with a certain radian, the locking block 24 is placed in the guide grooves 231 and 271, and the O-ring 25 is additionally installed and then fixed by the snap spring 26 after passing through the rotary base 27. When the rotary base 27 rotates to a certain angle relative to the base 23, the locking block 24 reserved in the guide groove locks the rotation, so that 360-degree rotation of more than one circle can be realized, the risk that the cable core wire is broken due to excessive torsion inside the armored protective sleeve can be avoided, and the problem of positioning and mounting the head of the product on site and the connector end of the product is solved.

The O-shaped ring 25 in the rotatable main body 17 can isolate water vapor, so that the water vapor is prevented from entering the connector, and the IP 68-grade water resistance of 0.5MPa and 1h is realized.

Claims (10)

1. A structure that is used for between supporting speed sensor head of rail vehicle and connector which characterized in that: the self-locking self-rotating pipe joint comprises a locking pipe joint, an armored protecting pipe and a locking self-rotating pipe joint, wherein two ends of the armored protecting pipe are respectively connected with the locking pipe joint and the locking self-rotating pipe joint.

2. The structure as claimed in claim 1, wherein the structure comprises: the locking pipe joint comprises a main body, a waterproof ring B, a tightening nut B, a fastening screw, an insulating gasket, a buckling limiting ring, a waterproof ring A and a tightening nut A, wherein the fastening screw penetrates through the insulating gasket and then is screwed into the armored protective sleeve, the buckling limiting ring is buckled outside the armored protective sleeve, the tightening nut A locks the waterproof ring A to the tightening nut B, the tightening nut B locks the waterproof ring B to the main body through a threaded connection main body, and the waterproof ring B holds the cable which is penetrated inside tightly.

3. The structure as claimed in claim 2, wherein the structure comprises: the convex teeth on the buckling limiting ring and the groove at the end of the tightening nut form clearance fit.

4. The structure as claimed in claim 2, wherein the structure comprises: a shield spring is embedded in the main body.

5. The structure as claimed in claim 2, wherein the structure comprises: the fastening screw comprises an external insulating sheath and an internal metal piece, wherein the internal metal piece is embedded into the external insulating sheath.

6. The structure as claimed in claim 5, wherein the structure comprises: and the bottom of the fastening screw metal piece is provided with an inner hexagonal bayonet.

7. The structure as claimed in claim 5, wherein the structure comprises: and the external insulating sheath is provided with a buckle for clamping the metal piece.

8. The structure as claimed in claim 1, wherein the structure comprises: the armored protective sleeve comprises an outer layer, a middle layer and an inner layer, wherein the outer layer and the inner layer are made of elastic flame-retardant materials, and the middle layer is woven by steel wires.

9. The structure as claimed in claim 1, wherein the structure comprises: the locking self-rotating pipe joint comprises a self-rotating main body, a self-rotating waterproof ring B, a rotatable main body, a self-rotating fastening screw, a self-rotating insulating gasket, a self-rotating buckling limiting ring, a self-rotating waterproof ring A and a self-rotating tightening nut A, wherein the self-rotating fastening screw penetrates through the self-rotating insulating gasket and then is screwed into the armored protective sleeve, the self-rotating buckling limiting ring is buckled outside the armored protective sleeve, the self-rotating tightening nut A locks the self-rotating waterproof ring A to the self-rotating tightening nut B, the self-rotating tightening nut B locks the self-rotating waterproof ring B to the self-rotating main body through a threaded connection self-rotating main body, and the self-rotating waterproof ring B tightly holds the cable which is penetrated inside.

10. The structure as claimed in claim 9, wherein the structure comprises: rotatable main part includes base, locking piece, O type circle, jump ring, roating seat, and base and roating seat have two corresponding guide ways that have certain radian respectively, and the locking piece is put into to the guide way, and it is fixed with the jump ring after passing the roating seat after installing O type circle additional.

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