Bolt forcible entry device for subway vehicle maintenance

Abstract

The utility model discloses a bolt forcible entry device for metro vehicle maintenance, which relates to the field of vehicle maintenance and comprises a fixed pipe, a fixed baffle ring is welded at the top end of the fixed pipe, a feeding bolt is in threaded connection with the lower position in the fixed pipe, and a cutter is in sliding connection with the upper position in the fixed pipe. A closed structure is arranged on the front portion of the fixed baffle ring and comprises a sliding groove and a movable baffle ring, the sliding groove is formed in the front surface of the fixed baffle ring, a sliding strip is fixedly installed on the rear portion of the movable baffle ring, and the sliding strip is in sliding connection with the sliding groove. According to the bolt forcible entry device for subway vehicle maintenance, the fixed baffle ring is arranged in a 4 / 5 circle mode, so that the fixed baffle ring is provided with the notch, the notch can be sleeved into the bolt from the outer portion of the bolt under the condition that the end of the bolt to be forcible entry is blocked by an object and cannot be sleeved, and the application range of the whole bolt forcible entry device is widened.

Description

Technical Field

[0001] The utility model relates to the field of vehicle maintenance, in particular to a bolt breaking device used for subway vehicle maintenance. Background Art

[0002] Bolts are commonly used fasteners in machinery. They can connect two or more structures together and are also widely used in subway vehicles. During the maintenance of subway vehicles, many bolts need to be disassembled and installed. However, since the bolts may rust or strip, they cannot be directly disassembled with a wrench. Therefore, a bolt breaking device is needed.

[0003] The existing bolt breaking device used for subway vehicle maintenance usually consists of a closed ring body sleeved on the outside of the bolt, and then a power device or a wrench is used to use a cutter to break the bolt. However, the installation of the bolt has a phenomenon that the end is blocked, so that the traditional bolt breaking device cannot be directly sleeved on the outside of the bolt, resulting in it being unusable and having a small scope of application.

[0004] To this end, this case proposes a bolt breaking device for subway vehicle maintenance, which solves the above technical problems with an open ring structure. Utility Model Content

[0005] The main purpose of the utility model is to provide a bolt breaking device for subway vehicle maintenance, which can effectively solve the technical problems in the background technology.

[0006] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0007] A bolt breaking device for subway vehicle maintenance comprises a fixed tube, a fixed retaining ring is welded to the top end of the fixed tube, a feed bolt is threadedly connected to the lower position of the interior of the fixed tube, and a cutter is slidably connected to the upper position of the interior of the fixed tube, a closed structure is provided at the front of the fixed retaining ring, the closed structure comprises a slide groove and a movable retaining ring, the slide groove is opened on the front surface of the fixed retaining ring, a slide bar is fixedly installed at the rear of the movable retaining ring, and the slide bar is slidably connected to the slide groove.

[0008] As a further solution of the utility model, the fixed baffle ring is arranged in a 4 / 5 circle, and the movable baffle ring is arranged in a 1 / 2 circle.

[0009] As a further solution of the utility model, the contact surfaces of the slide groove and the slide bar are arranged in a T-shape, and the diameters of the fixed retaining ring and the movable retaining ring are the same.

[0010] As a further solution of the utility model, a positioning bolt is threadedly connected to the front of the movable retaining ring near one end, and a positioning hole is opened on the surface of the front of the fixed retaining ring near one end, and the diameter of the positioning hole is larger than the diameter of the positioning bolt.

[0011] As a further solution of the utility model, the cutter consists of a conical column and a disc, the top of the conical column is sharp, and the diameter of the disc is larger than the diameter of the conical column, two limit bars are symmetrically arranged on the outside of the disc, and the disc is slidably connected to the inner wall of the fixed tube through the limit bars.

[0012] As a further solution of the utility model, a steel ball is placed inside the fixing tube between the feed bolt and the cutter.

[0013] The beneficial effects of the utility model are as follows:

[0014] By setting a fixed retaining ring, the fixed retaining ring adopts a 4 / 5 circle setting, so it has a gap, and the gap can be inserted from the outside of the bolt when the end of the bolt to be broken is blocked by an object and cannot be inserted, thereby increasing the application range of the entire bolt breaking device;

[0015] By arranging a movable retaining ring to cooperate with a fixed retaining ring, the movable retaining ring can be used to close the gap of the fixed retaining ring, thereby increasing the structural strength of the entire bolt breaking device and improving the stability of the breaking;

[0016] By arranging steel balls to cooperate with the cutter, the steel balls can effectively reduce the friction between the feed bolt and the cutter, thereby reducing the wear on the feed bolt and the cutter, and can also improve the feed efficiency of the cutter. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the overall structure of a bolt breaking device for subway vehicle maintenance according to the utility model;

[0018] Figure 2 This is a demonstration diagram of the rotation of a movable retaining ring of a bolt breaking device for subway vehicle maintenance according to the utility model;

[0019] Figure 3 This is a disassembled diagram of a fixed retaining ring and a movable retaining ring of a bolt breaking device for subway vehicle maintenance according to the utility model;

[0020] Figure 4 This is a rear perspective view of a bolt breaking device for subway vehicle maintenance according to the utility model, wherein the fixed retaining ring and the movable retaining ring are separated;

[0021] Figure 5 The utility model is a cross-sectional view of a fixing pipe of a bolt breaking device for subway vehicle maintenance.

[0022] In the figure: 1. fixed tube; 2. fixed retaining ring; 3. feed bolt; 4. cutter; 5. closing structure; 6. slide groove; 7. movable retaining ring; 8. positioning bolt; 9. positioning hole; 10. slide bar; 11. steel ball. DETAILED DESCRIPTION

[0023] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.

[0024] like Figure 1-Figure 5 As shown, a bolt breaking device for subway vehicle maintenance includes a fixed tube 1, a fixed retaining ring 2 is welded to the top of the fixed tube 1, a feed bolt 3 is threadedly connected to the lower position of the inside of the fixed tube 1, and a cutter 4 is slidably connected to the upper position of the inside of the fixed tube 1, a closed structure 5 is provided at the front of the fixed retaining ring 2, the closed structure 5 includes a slide groove 6 and a movable retaining ring 7, the slide groove 6 is opened on the front surface of the fixed retaining ring 2, and a slide bar 10 is fixedly installed at the rear of the movable retaining ring 7, and the slide bar 10 is slidably connected to the slide groove 6.

[0025] In this embodiment, the fixed baffle ring 2 is arranged in a 4 / 5 circle, and the movable baffle ring 7 is arranged in a 1 / 2 circle;

[0026] The fixed retaining ring 2 set in a 4 / 5 circle can be installed on the outside of the bolt through the gap of the fixed retaining ring 2 when both ends of the bolt are blocked, thereby reducing the situation where the bolt installation environment restricts the bolt from being broken. The movable retaining ring 7 set in a 1 / 2 circle can close the gap of the fixed retaining ring 2 when the bolt is broken, thereby ensuring the stability of the entire structure.

[0027] In this embodiment, the contact surface between the slide groove 6 and the slide bar 10 is arranged in a T shape, and the diameters of the fixed retaining ring 2 and the movable retaining ring 7 are the same;

[0028] The slide groove 6 and the slide bar 10 of the T-shaped contact surface can limit the range of movement of the movable retaining ring 7, ensuring that it will not fall off the fixed retaining ring 2, and the diameters of the fixed retaining ring 2 and the movable retaining ring 7 are the same, which can ensure that the movable retaining ring 7 can slide in front of the fixed retaining ring 2 through the slide bar 10.

[0029] In this embodiment, a positioning bolt 8 is threadedly connected to the front of the movable retaining ring 7 near one end, and a positioning hole 9 is opened on the surface of the front of the fixed retaining ring 2 near one end, and the diameter of the positioning hole 9 is larger than the diameter of the positioning bolt 8;

[0030] When the positioning bolt 8 is inserted into the positioning hole 9, the position of the movable retaining ring 7 can be locked, so that the fixed retaining ring 2 cooperates with the movable retaining ring 7 to form a closed loop.

[0031] In this embodiment, the cutter 4 is composed of a conical column and a disc. The top of the conical column is sharp, and the diameter of the disc is larger than the diameter of the conical column. Two limit bars are symmetrically arranged on the outside of the disc, and the disc is slidably connected to the inner wall of the fixed tube 1 through the limit bars.

[0032] The disc cooperates with the limiting strip to ensure that the cutter 4 does not rotate and can only slide inside the fixed tube 1, thereby ensuring the tangential direction of the cutter 4.

[0033] In this embodiment, a steel ball 11 is placed inside the fixed tube 1 between the feed bolt 3 and the cutter 4;

[0034] The steel ball 11 can reduce the friction between the feed bolt 3 and the cutter 4 and improve the feed efficiency of the cutter 4 .

[0035] It should be noted that the utility model is a bolt breaking device for subway vehicle maintenance. When in use, when it is necessary to break the bolt, if the end of the bolt is not blocked, the movable retaining ring 7 is fixed to the front of the fixed retaining ring 2 by the positioning bolt 8, so that the fixed retaining ring 2 and the movable retaining ring 7 form a closed loop, and then the closed loop is set on the outside of the bolt to be broken, and the feed bolt 3 is driven to rotate by a wrench or an external electric tool. During the rotation of the feed bolt 3, the steel ball 11 pushes the cutter 4 to move, and the blade of the cutter can cut off the rusted or stripped bolt, thereby achieving the effect of breaking the bolt;

[0036] If the end of the bolt is blocked by an object, the fixed retaining ring 2 can be installed on the outside of the bolt through its notch, and then the movable retaining ring 7 can be slid through the slide bar 10 to close the fixed retaining ring 2, and the bolt 3 can be rotated again, and the cutter 4 can be used to break the bolt.

[0037] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. The technicians in this industry should understand that the utility model is not limited by the above embodiments, and the above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model will have various changes and improvements, and these changes and improvements fall within the scope of the utility model to be protected.

Claims

1. A bolt breaking device for subway vehicle maintenance, comprising a fixing tube (1), a fixing retaining ring (2) welded to the top of the fixing tube (1), a feed bolt (3) threadedly connected to the lower position of the fixing tube (1), and a cutter (4) slidably connected to the upper position of the fixing tube (1), characterized in that: A closed structure (5) is provided at the front of the fixed retaining ring (2), and the closed structure (5) includes a slide groove (6) and a movable retaining ring (7). The slide groove (6) is opened on the front surface of the fixed retaining ring (2), and a slide bar (10) is fixedly installed at the rear of the movable retaining ring (7), and the slide bar (10) is slidably connected to the slide groove (6).

2. A bolt breaking device for subway vehicle maintenance according to claim 1, characterized in that: The fixed baffle ring (2) is arranged in a 4 / 5 circle, and the movable baffle ring (7) is arranged in a 1 / 2 circle.

3. The bolt breaking device for subway vehicle maintenance according to claim 1, characterized in that: The contact surfaces of the slide groove (6) and the slide bar (10) are arranged in a T-shape, and the diameters of the fixed retaining ring (2) and the movable retaining ring (7) are the same.

4. The bolt breaking device for subway vehicle maintenance according to claim 1, characterized in that: A positioning bolt (8) is threadedly connected to the front of the movable retaining ring (7) near one end, and a positioning hole (9) is opened on the surface of the front of the fixed retaining ring (2) near one end, and the diameter of the positioning hole (9) is larger than the diameter of the positioning bolt (8).

5. The bolt breaking device for subway vehicle maintenance according to claim 1, characterized in that: The cutter (4) is composed of a conical column and a disc. The top of the conical column is sharp, and the diameter of the disc is larger than the diameter of the conical column. Two limit bars are symmetrically arranged on the outside of the disc, and the disc is slidably connected to the inner wall of the fixed tube (1) through the limit bars.

6. The bolt breaking device for subway vehicle maintenance according to claim 1, characterized in that: A steel ball (11) is placed inside the fixing tube (1) between the feed bolt (3) and the cutter (4).

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