Rapid threading protection device for lower cavity of vehicle

Abstract

The utility model discloses a rapid threading protection device for an under-vehicle cavity, and belongs to the technical field of electrical wiring of rail transit vehicles. The device comprises a guide mechanism used for penetrating through a cavity, a tightening mechanism connected with a wire harness, and a connecting mechanism connected with the guide mechanism and the tightening mechanism. Wherein the structures of the guide mechanism and the tightening mechanism are flexible sleeves; the end, far away from the connecting mechanism, of the guide mechanism is provided with a conical guide part used for being led into a cavity, the tightening mechanism is arranged at the end of the wire harness in a sleeving mode, and the tightening mechanism is provided with an expansion part used for containing the wire harness. And the labor intensity of an operator is reduced, and the material loss is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of rail transit vehicle electrical wiring, in particular to a vehicle undercarriage cavity rapid wire threading protection device. Background Art

[0002] In the field of rail transit, most of the electrical equipment under the vehicle is high-power equipment, and the input and output current and voltage are relatively large. In order to ensure the safety of vehicle operation, the cables under the vehicle are mostly 35mm 2 The above cables. The wiring under the car is mainly in the car body cavity. When threading the cavity, at least two people feed the wire at one end of the cavity, and the other two people pull the wire at the other end of the cavity to drive the cable to move in the cavity. The feeding and pulling rhythm should be consistent, and each feeding is about 300mm. When feeding the wire, make sure that the wires in the harness are not tight.

[0003] The existing operation method is as follows: the existing construction method is to use hard wires to bind the wire harnesses with tape and thread them in the triangular cavity under the car. When the wire harnesses pass through the box, the wire harnesses are easily bent and damaged at the exit due to the small curvature of the wire harnesses. When the wire harnesses pass through, they contact the inner wall and edge of the cavity, causing friction and damage to the wire harnesses. It is difficult to remove the wire harnesses by wrapping them with tape. There are many wire harnesses in the cavity, and the wire harness numbers are scattered and unevenly distributed. Using hard wires is not only difficult to thread, but also easy to fall off when threading. Repeated threading can easily damage the wire harnesses. After the cavity wiring harness is threaded, the wire harness and the wire harness number are not found to be damaged in time, which requires a lot of manpower and time to make modifications. The amount of modification is large and affects the normal production process of the vehicle. Utility Model Content

[0004] The purpose of the utility model is to overcome the defects of the prior art and provide a quick threading protection device for the under-vehicle cavity that can effectively avoid the small bending arc of the wire, which is easy to bend and damage at the exit, as well as the risk of damage to the inner wall of the cavity in the vehicle and the risk of getting stuck and falling off due to the wire harness line number.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] The utility model discloses a vehicle undercarriage cavity quick threading protection device, comprising:

[0007] A guide mechanism for passing through the cavity, a tightening mechanism connected to the wire harness, and a connecting mechanism connecting the guide mechanism and the tightening mechanism;

[0008] Wherein, the guide mechanism and the tightening mechanism are both constructed as flexible sleeves;

[0009] The guide mechanism has a tapered guide portion for introducing into the cavity at the end away from the connecting mechanism, and the tightening mechanism is sleeved on the end of the wire harness, and the tightening mechanism has an expansion portion for accommodating the wire harness.

[0010] Furthermore, the connecting mechanism includes a rod body, both ends of the rod body are threadedly connected with a locking nut and a locking spring sheet, and a shoulder in contact with the locking spring sheet is formed in the middle of the rod body.

[0011] Furthermore, the rod body is a double-headed screw.

[0012] Furthermore, the guide mechanism has an internal thread at the end away from the tapered guide portion, and is threadedly connected to the rod body via the internal thread.

[0013] Furthermore, the tightening mechanism has a sleeve front end and a sleeve tail end, and the expansion portion is formed in the middle of the tightening mechanism.

[0014] Furthermore, the tightening mechanism is a nylon mesh tube.

[0015] Furthermore, the guide mechanism is a threaded tube.

[0016] Furthermore, the tapered guide portion is integrally formed at one end of the threaded tube.

[0017] In the above technical solution, the utility model provides a vehicle cavity quick threading protection device, which has the following beneficial effects compared with the prior art:

[0018] The protection device eliminates the hard wire threading method in the prior art;

[0019] Firstly, it utilizes the tapered guide part of the guide mechanism to introduce into the cavity, which is conducive to passing through the cavity and reduces the labor intensity of the operator;

[0020] Secondly, use a retractable tightening mechanism to protect the wire harness before threading, and ensure that the wire harness is separated from the cavity when threading;

[0021] Finally, applying grease on the tightening mechanism can minimize the friction coefficient between the wire harness and the cavity, ensure the threading quality, reduce the threading cost and labor intensity, and improve the cavity threading efficiency;

[0022] After using this device, the time is shortened from the original 8 hours to 5 hours. Now each car has more than 20 bundles of wires, and the efficiency of cavity threading installation is improved by more than 60%. According to the daily output of 4 cars, the operation of the cavity under the car can save 12 hours a day, improve work efficiency, reduce the labor intensity of operators, and reduce material loss. The car cavity quick threading protection device has the characteristics of simple and practical structure, easy operation and low production cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present utility model. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0024] Figure 1 This is an axonometric diagram of the overall structure of a quick threading protection device for a vehicle cavity disclosed in the utility model;

[0025] Figure 2 It is a partial enlarged view of a vehicle under-cavity quick threading protection device disclosed in the utility model;

[0026] Figure 3 It is a structural schematic diagram of a guide mechanism of a vehicle undercarriage cavity quick threading protection device disclosed in the utility model;

[0027] Figure 4 It is a structural schematic diagram of a connection mechanism of a vehicle under-cavity quick threading protection device disclosed in the utility model;

[0028] Figure 5 The utility model discloses a structural schematic diagram of a tightening mechanism of a vehicle undercarriage cavity quick threading protection device.

[0029] Description of reference numerals:

[0030] 1. Guide mechanism; 2. Connecting mechanism; 3. Tightening mechanism;

[0031] 101. threaded pipe; 102. tapered guide portion;

[0032] 201, double-headed screw; 202, locking spring washer; 203, locking nut;

[0033] 301, front end of the sleeve; 302, rear end of the sleeve; 303, expansion part. DETAILED DESCRIPTION

[0034] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0035] See also Figure 1 , 2 As shown;

[0036] The utility model discloses a fast threading protection device for a car cavity, comprising: a guide mechanism 1, a connection mechanism 2, and a tightening mechanism 3;

[0037] The guide mechanism 1 is used for passing through the cavity, the connecting mechanism 2 transitionally connects the guide mechanism 1 and the tightening mechanism 3, the tightening mechanism 3 is connected to one end of the wire harness 4, wherein the guide mechanism 1 and the tightening mechanism 3 are both constructed as flexible sleeves, the guide mechanism 1 has a tapered guide portion 102 at the end away from the connecting mechanism 2, the tightening mechanism 3 is sleeved on the end of the wire harness 4, and also has an expansion portion 303 for accommodating the wire harness 4;

[0038] In this structure, the cavity 5 is introduced through the conical guide part 102, and the guide mechanism 1 is a flexible sleeve, which can effectively replace the hard wire tape to bind the wire harness through the cavity, so as to avoid the problem that the wire has a small bending arc and is prone to bending and damage at the exit. The tightening mechanism 3 is sleeved on the end of the wire harness 4, which can effectively avoid the risk of the wire harness getting stuck and falling off at the cavity mouth when passing through the cavity. In addition, the tightening mechanism 3 also has an expansion part 303 for accommodating the wire harness 4. The expansion part 303 can not only protect the wire harness number at the end of the wire harness but also accommodate more wire harnesses. At the same time, it can also avoid the risk of damage to the wire harness and the wire number and the inner wall of the cavity in the vehicle, as well as repeated adjustments during the threading process, which not only improves work efficiency and quality, but also reduces labor intensity and saves production costs.

[0039] See also Figure 4 As shown:

[0040] Preferably, the connecting mechanism 2 includes a rod body, both ends of which are threadedly connected with a locking nut 202 and a locking spring 203, and a shoulder is formed in the middle of the rod body to contact the locking spring 203. The specific rod body is a double-headed screw 201, and the end of the guide mechanism 1 away from the tapered guide part 102 has an internal thread, which is threadedly connected to the rod body through the internal thread.

[0041] See also Figure 5 As shown:

[0042] Preferably, the tightening mechanism 3 has a sleeve front end 301 and a sleeve tail end 302. Specifically, the tightening mechanism 3 is a nylon mesh tube, and an expansion portion 303 is formed in the middle of the tightening mechanism 3. The expansion portion 303 can protect the wiring harness at the end of the wiring harness and can accommodate more wiring harnesses.

[0043] See also Figure 3 As shown:

[0044] Preferably, the guide mechanism 1 is a threaded tube 101, which can be a plastic threaded tube in the prior art, and a tapered guide portion 102 is integrally formed at one end of the threaded tube 101. Specifically, the tapered guide portion 102 can be formed by shrinking the threaded tube into a tapered shape using a hot air gun to prevent the threaded tube from having a large port diameter and scratching obstacles when threading the cavity;

[0045] In the above technical solution, the utility model provides a vehicle cavity quick threading protection device, the use method of which is:

[0046] See also Figure 1 , 2 As shown, first, the front end 301 of the sleeve of the tightening mechanism 3 is passed onto one end of the double-headed screw 201, and then the front end 301 of the sleeve is reversely passed into the locking spring washer 202, and finally the locking nut 203 is passed into the double-headed screw 201 and tightened into place to clamp the locking spring washer 202 and the front end 301 of the sleeve.

[0047] The threaded tube 101 is locked to the other end of the stud screw 201 through the internal thread; then the locking spring washer 202 and the locking nut 203 are tightened in sequence to fasten the bendable threaded tube 101 in place. When both ends of the stud screw 201 are screwed and tightened, the wire harness 4 is pushed to the front end 301 of the sleeve, so that the expansion part 303 completely wraps the wire harness 4, and the sleeve tail end 302 and the wire harness 4 are tightly wrapped with tape. When threading, the conical guide part 102 enters from one end of the undercarriage cavity 5 and passes out from the other end to complete the cavity threading. When operating, first pull the conical guide part 102, stand properly, and stand about 1 meter away from the cavity mouth, and then ensure that the conical guide part 102 is pulled parallel to the undercarriage cavity 5. Finally, the speed should be moderate when aligning the line, and the line should be aligned in accordance with the rhythm of pulling the line to ensure that the wire harness is parallel to the cavity mouth.

[0048] The above only describes some exemplary embodiments of the present invention by way of illustration. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A quick threading protection device for undercarriage cavity, characterized in that: include: A guide mechanism (1) for passing through a cavity, a tightening mechanism (3) connected to a wire harness (4), and a connecting mechanism (2) connecting the guide mechanism (1) and the tightening mechanism (3); Wherein, the guide mechanism (1) and the tightening mechanism (3) are both constructed as flexible sleeves; The guide mechanism (1) has a conical guide portion (102) for introducing into the mold cavity (5) at the end away from the connecting mechanism (2); the tightening mechanism (3) is sleeved on the end of the wire harness (4); and the tightening mechanism (3) has an expansion portion (303) for accommodating the wire harness (4).

2. The undercarriage cavity quick threading protection device according to claim 1 is characterized in that ； The connecting mechanism (2) comprises a rod body, both ends of which are threadedly connected with a locking nut (202) and a locking spring (203), and a shoulder in contact with the locking spring (203) is formed in the middle of the rod body.

3. The quick threading protection device for undercarriage cavity according to claim 2 is characterized in that ； The rod body is a double-headed screw (201).

4. A quick threading protection device for undercarriage cavity according to claim 2, It is characterized by: The end of the guide mechanism (1) away from the conical guide portion (102) has an internal thread, and is threadedly connected to the rod body via the internal thread.

5. The undercarriage cavity quick threading protection device according to claim 1, It is characterized by: The tightening mechanism (3) comprises a sleeve front end (301) and a sleeve rear end (302), and the expansion portion (303) is formed in the middle of the tightening mechanism (3).

6. A quick threading protection device for undercarriage cavity according to any one of claims 1 to 4, characterized in that ； The tightening mechanism (3) is a nylon mesh tube.

7. A quick threading protection device for undercarriage cavity according to any one of claims 1 to 4, characterized in that ； The guide mechanism (1) is a threaded tube (101).

8. A quick threading protection device for undercarriage cavity according to claim 7, It is characterized by: The tapered guide portion (102) is integrally formed at one end of the threaded tube (101).

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