Railway embedded U-shaped bolt bending device

Abstract

The utility model discloses a railway pre-buried U-shaped bolt bending device which comprises a static bending column and comprises an attaching disc, the outer edge of the attaching disc is a concave cambered surface, a plurality of flow holes distributed at equal intervals are formed in the concave cambered surface, a containing cavity is formed in the attaching disc, lubricating oil is filled in the containing cavity in advance, ejector rods are arranged in the flow holes in a sliding mode, the ejector rods are elastically connected with the interior of the containing cavity, and the static bending column is arranged in the containing cavity. When the bolt is tightly attached to the concave arc face of the outer edge of the attaching disc, the end, located outside the flow hole, of the ejector rod is touched to enable the ejector rod to move towards the interior of the containing cavity, and the flow hole is opened. When the bolt is attached to the attaching disc, the bolt touches and abuts against the ejector rod, the ejector rod contracts inwards, the flow hole is opened, lubricating oil in the attaching disc gradually flows out to be immersed on the attaching surface of the bolt and the attaching disc, abrasion caused by sliding friction between the bolt and the attaching disc is reduced, and cracks are further reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of bending process, especially relates to railway embedded U-shaped bolt bending device. BACKGROUND

[0002] U-shaped bolt is a common fastener, and is widely used in the fields of building, machinery, railway and the like.

[0003] Usually, the U-shaped bolt is formed by a bending machine, which comprises a pressing roller and a bending column. The bending column is also called a forming column. The static bending column is used in cooperation with the dynamic pressing roller. The pressing roller rotates around the virtual center axis of the bending column. The bolt is bent and extruded into a U-shaped form under the action of the pressing roller and the bending column. However, in the process of forming the U-shaped bolt, the bolt changes from a straight line to a bent form. The sliding friction between the bolt and the static bending column at the bonding part will cause cracks or damage on the surface of the bolt. SUMMARY

[0004] The utility model discloses a railway embedded U-shaped bolt bending device, which can eliminate the cracks caused by the sliding friction between the bolt and the static bending column during the bending process.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme:

[0006] The railway embedded U-shaped bolt bending device comprises a static bending column, a bonding disc, a plurality of flow holes arranged at equal intervals on the concave surface of the outer edge of the bonding disc, a cavity in the bonding disc, lubricating oil filled in the cavity, a top rod slidingly arranged in the flow hole, and an elastic connection between the top rod and the cavity.

[0007] Preferably, the bending column further comprises an upper column and a lower column, which are located on the upper and lower sides of the bonding disc and are fixedly connected with the bonding disc in the same coaxial center. The upper column is connected with the cavity through a feeding hole.

[0008] Preferably, a fixed ring is fixedly connected in the cavity, the height of the fixed ring is the same as the depth of the cavity, the cavity is divided into two chambers, i.e., an inner chamber and an outer chamber, a plurality of partition plates arranged at equal intervals and a blocking ring are fixedly arranged in the outer chamber, a plurality of small compartments with the same space and not connected with each other are formed, and each small compartment corresponds to a flow hole.

[0009] Preferably, the fixed ring is provided with a plurality of communication holes arranged at the same coaxial center, the number of the communication holes is the same as that of the flow holes, and the communication holes make the inner chamber and each small compartment communicate with each other.

[0010] Preferably, the blocking ring is provided with a plurality of elastic grooves, a horizontal shaft is fixedly connected in the elastic grooves in the transverse direction, a sliding block is slidably arranged in the elastic grooves, the horizontal shaft penetrates through the sliding block, a compression spring is sleeved on the outer wall of the horizontal shaft, and the two ends of the compression spring are connected with the sliding block and the inner wall of the elastic groove respectively.

[0011] Preferably, the end of the top rod extending out of the flow hole is in the shape of a hemisphere, the top rod is provided with two ring grooves, a rubber sleeve is fixedly sleeved at the ring grooves, the abutting disc is provided with an intermittent hole, one end of the intermittent hole is communicated with the flow hole, and the other end is communicated with the small compartment.

[0012] Compared with the prior art, the utility model has the beneficial effects that:

[0013] In the utility model, when the bolt is abutted with the abutting disc, the top rod is touched and pressed, the top rod is retracted inward, the flow hole is opened, the lubricating oil in the abutting disc is gradually flowed out and soaked on the surface of the bolt abutted with the abutting disc, the abrasion caused by the sliding friction between the bolt and the abutting disc is reduced, and the generation of cracks is further reduced. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 The utility model discloses a structure schematic diagram of the bending column of the railway embedded U-shaped bolt bending device.

[0015] Figure 2 The utility model discloses an internal structure schematic diagram of the bending column of the railway embedded U-shaped bolt bending device.

[0016] Figure 3 The utility model discloses a partial structure schematic diagram of the abutting disc. Figure 2 The utility model discloses a partial structure schematic diagram of the abutting disc.

[0017] Figure 4 The utility model discloses a top internal structure schematic diagram of the abutting disc in the railway embedded U-shaped bolt bending device.

[0018] Figure 5 The utility model discloses a structure schematic diagram of the top rod in the railway embedded U-shaped bolt bending device.

[0019] In the drawing: 1, abutting disc, 2, flow hole, 3, top rod, 4, upper column, 5, lower column, 6, feeding hole, 7, fixed ring, 8, partition plate, 9, blocking ring, 10, communication hole, 11, elastic groove, 12, horizontal shaft, 13, sliding block, 14, compression spring, 15, ring groove, 16, rubber sleeve, 17, intermittent hole. DETAILED DESCRIPTION

[0020] Clearly, the described embodiments are merely a part of the embodiments of the present application, rather than all the embodiments, and all other embodiments obtained by those of ordinary skill in the art without creative efforts based on the embodiments of the present application shall fall within the scope of the present application.

[0021] Reference is made to the accompanying drawings Figure 1 -attached Figure 5 The railway embedded U-shaped bolt bending device comprises a static bending column, a fitting disc 1, a plurality of equidistantly arranged flow holes 2 on the concave surface of the outer edge of the fitting disc 1, a cavity in the fitting disc 1, lubricating oil pre-filled in the cavity, a top rod 3 slidingly arranged in the flow hole 2, and an elastic connection between the top rod 3 and the cavity so that one end of the top rod 3 is located outside the flow hole 2 to block the flow hole 2, and when the bolt is in close contact with the concave surface of the outer edge of the fitting disc 1, the end of the top rod 3 outside the flow hole 2 is touched to move the top rod 3 to the inside of the cavity, and the flow hole 2 is opened.

[0022] The bending column further comprises an upper column 4 and a lower column 5 located on the upper and lower sides of the fitting disc 1 and fixedly connected with the fitting disc 1 coaxially, and the upper column 4 is connected with the cavity through a feeding hole 6.

[0023] A fixing ring 7 is fixedly connected in the cavity, the height of the fixing ring 7 is the same as the depth of the cavity, the cavity is divided into an inner cavity and an outer cavity, a plurality of equidistantly arranged partition plates 8 and a blocking ring 9 are fixedly arranged in the outer cavity, a plurality of small compartments with the same space and not connected with each other are formed, and each small compartment corresponds to one flow hole 2.

[0024] The fixing ring 7 is provided with a plurality of communication holes 10, the number of the communication holes 10 is the same as that of the flow holes 2, and the communication holes 10 are coaxially arranged, and the communication holes 10 make the inner cavity and each small compartment communicate with each other.

[0025] The blocking ring 9 is provided with a plurality of elastic grooves 11, a horizontal shaft 12 is fixedly connected in the elastic grooves 11, a sliding block 13 is slidingly arranged in the elastic grooves 11, the horizontal shaft 12 penetrates through the sliding block 13, a compression spring 14 is sleeved on the outer wall of the horizontal shaft 12, the two ends of the compression spring 14 are connected with the sliding block 13 and the inner wall of the elastic grooves 11 respectively, the sliding block 13 is fixedly connected with the top rod 3, and the elastic force of the compression spring 14 makes one end of the top rod 3 extend outside the flow hole 2.

[0026] One end of the top rod 3 extending outside the flow hole 2 is in the shape of a hemisphere, the top rod 3 is provided with two ring grooves 15, rubber sleeves 16 are fixedly sleeved on the ring grooves 15, the fitting disc 1 is provided with intermittent holes 17, one end of the intermittent holes 17 communicates with the flow holes 2, and the other end communicates with the small compartments.

[0027] Working principle:

[0028] Before use, pour lubricating oil into the fitting disc 1 through the feeding hole 6, and the hemispherical end of each ejector rod 3 extends out of the flow hole 2 under the elastic force of the compression spring 14, and the intermittent hole 17 is blocked by the rubber sleeve 16, the communication hole 10 is not blocked, the lubricating oil enters each small compartment, and the top surface of the lubricating oil in the small compartment is limited by the retaining ring 9;

[0029] In use, the bolt is attached to the concave arc surface of the fitting disc 1, which will touch the ejector rod 3 and push the ejector rod 3 into the inside of the fitting disc 1, after being fully pushed in, the rubber sleeve 16 blocks the communication hole 10, and the intermittent hole 17 is smooth, so that the lubricating oil in the small compartment flows out through the intermittent hole 17 and the flow hole 2 and is immersed in the surface attached to the fitting disc 1, reducing the wear caused by the sliding friction between the two, and further reducing the generation of cracks.

[0030] It should be noted that the static bending column is actually a bending column fixedly connected on a bending machine, and the bending column does not move and is in a static state, specifically, the lower column 5 in the application is fixedly connected with the bending machine table, and the bending machine and other components except the improved bending column in the application are prior art, which will not be described here.

[0031] Pouring lubricating oil keeps the highest level of lubricating oil from overflowing the feeding hole 6, and always fills the entire cavity.

[0032] The above is only the preferred specific implementation of the present application, but the protection scope of the present application is not limited thereto, any skilled person in the art can make equivalent replacement or change according to the technical scheme and the inventive concept of the present application within the technical range disclosed by the present application, which should be covered within the protection scope of the present application.

Claims

1. A railway embedded U-shaped bolt bending device, characterized in that, The utility model discloses a static bending column, including the fitting disc (1), the outer edge of fitting disc (1) is the concave arc surface, and a plurality of equidistantly arranged flow holes (2) are formed on the concave arc surface, a cavity is formed in the fitting disc (1), and the cavity is filled with lubricating oil in advance, a push rod (3) is slidably arranged in the flow hole (2), and the push rod (3) is elastically connected with the cavity, so that one end of the push rod (3) is located outside the flow hole (2) to block the flow hole (2), when the bolt is tightly attached to the concave arc surface of the outer edge of the fitting disc (1), the end of the push rod (3) outside the flow hole (2) is touched to make the push rod (3) move to the inside of the cavity, and the flow hole (2) is opened.

2. The railway embedded U-bolt bending device according to claim 1, characterized in that, The bending column further comprises an upper column (4) and a lower column (5) located on the upper and lower sides of the fitting disc (1) and fixedly connected with the fitting disc (1) coaxially, wherein the upper column (4) is connected with the cavity through a feeding hole (6).

3. The railway embedded U-bolt bending device according to claim 1, characterized in that, A fixed ring (7) is fixedly connected in the cavity, the height of the fixed ring (7) is the same as the depth of the cavity, the cavity is divided into an inner cavity and an outer cavity, the outer cavity is fixedly provided with a plurality of equidistantly arranged partition plates (8) and a blocking ring (9), a plurality of small compartments with the same space and not connected with each other are formed, and each small compartment corresponds to one flow hole (2).

4. The railway embedded U-bolt bending device according to claim 3, characterized in that, The fixed ring (7) is provided with a plurality of communication holes (10), the number of the communication holes (10) is the same as that of the flow holes (2), and the communication holes (10) are coaxially arranged, so that the inner cavity is communicated with each small compartment.

5. The railway pre-buried U-shaped bolt bending device according to claim 3, characterized in that, The blocking ring (9) is provided with a plurality of elastic grooves (11), a horizontal shaft (12) is fixedly connected in the elastic groove (11) in the transverse direction, a sliding block (13) is slidably arranged in the elastic groove (11), the horizontal shaft (12) penetrates through the sliding block (13), a compression spring (14) is sleeved on the outer wall of the horizontal shaft (12), the two ends of the compression spring (14) are connected with the sliding block (13) and the inner wall of the elastic groove (11) respectively, the sliding block (13) is fixedly connected with the push rod (3), and the elastic force of the compression spring (14) makes one end of the push rod (3) extend outside the flow hole (2).

6. The railway embedded U-bolt bending device of claim 1, wherein The end of the push rod (3) extending outside the flow hole (2) is in the shape of a hemisphere, the push rod (3) is provided with two ring grooves (15), rubber sleeves (16) are fixedly sleeved on the ring grooves (15), and the fitting disc (1) is provided with intermittent holes (17), one end of the intermittent hole (17) is communicated with the flow hole (2), and the other end is communicated with the small compartment.

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