Integral forging die for thrust wheel body

Abstract

The utility model relates to an integral forging die for a thrust wheel body, which comprises an upper die, a lower die, a left die and a right die, the upper die and the lower die are used for vertically and inwards extruding the shape of a round bar blank, and the left die and the right die are used for parallelly and inwards extruding an inner hole of the round bar blank. According to the thrust wheel, the problems that welding is difficult and not in place due to split forging and welding of the wheel body, and the thrust wheel loses efficacy and is fractured from a welding seam during use are solved; meanwhile, materials are saved, the cost is reduced, and the mechanical performance of the product is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of supporting wheel manufacturing, in particular to an integral forging die for a supporting wheel body. Background Art

[0002] Crawler engineering machinery is widely used in earthwork projects such as agriculture, construction, mining, water conservancy, forestry and national defense construction, and is one of the important earthwork machines. The crawler travel device bears the overall weight and operating load of the engineering machinery during operation. The four wheels and one belt are important components of the crawler travel device of engineering machinery. The four wheels and one belt refer to the driving wheel, guide wheel, sprocket wheel, supporting roller and crawler track. The supporting roller is a key link in the crawler travel device to complete the established functions. The weight of the whole machine and the excavation force are dispersed to each supporting roller through the crawler frame.

[0003] As one of the four wheels in one belt, the track roller not only rolls along the chain link surface of the track during the driving of the construction machinery, but also clamps the track to prevent it from sliding out laterally. When the construction machinery turns, it forces the track to slide laterally on the ground and ensures that the track does not derail or wear eccentrically when turning. The track roller is divided into single-sided track roller and double-sided track roller according to whether the wheel rim has a convex edge.

[0004] The supporting wheel body of the construction machinery is supported by the upward force of the crawler chain track, and the two ends of the main shaft bear the gravity of the excavator. Due to the complex force of the supporting wheel, its structure must be reasonable, and the main shaft, wheel body and sleeve need to have relatively high strength, toughness, wear resistance and sealing.

[0005] At present, the wheel body of the supporting roller is forged by forging two half-body supporting rollers and then welded together. When the supporting roller is subjected to a huge impact and an alternating load, the supporting roller wheel body structure using the welding method cannot meet the strength requirements. Once the quality control of the weld is not in place, the supporting roller body will break from the weld in the middle. This is the main failure form of the supporting roller, which causes the engineering machinery to be unable to operate normally.

[0006] In view of the above technical problems, the utility model provides an integral forging die for a track wheel body. Summary of the invention

[0007] The purpose of the utility model is to overcome the deficiencies of the prior art and provide a die forging an integral track roller body, which is used to forge the track roller body as a whole, thereby solving the technical problems of difficult welding and inadequate welding caused by separate forging and welding of the wheel body, which causes the track roller to fail and break at the weld when in use.

[0008] The utility model solves the technical problem through the following technical solutions:

[0009] An integral forging die for a track wheel body, comprising an upper die, a lower die, a left die and a right die, wherein the upper die and the lower die extrude the outer shape of a round bar blank vertically inward, and the left die and the right die extrude the inner hole of the round bar blank parallelly inward;

[0010] The left mold comprises a left connecting flange, a left connecting rod, a left plane module, a left connecting sleeve, a left cushion block, a left outer punch and a left inner punch, wherein the left connecting flange is connected to one end of the left connecting rod, the left plane module is sleeved on the left connecting rod, the left connecting sleeve is sleeved on the left connecting rod and is located at the right end of the left plane module, the left connecting sleeve is connected to the left outer punch, the left inner punch is connected to the other end of the left connecting rod, and the left cushion block is clamped between the left connecting sleeve and the left connecting rod;

[0011] The right mold includes a right connecting flange, a right connecting rod, a right plane module, a right connecting sleeve, a right pad, a right outer punch and a right inner punch. The right connecting flange is connected to one end of the right connecting rod, the right plane module is sleeved on the right connecting rod, the right connecting sleeve is sleeved on the right connecting rod and is located at the left end of the right plane module, the right connecting sleeve is connected to the right outer punch, the right inner punch is connected to the other end of the right connecting rod, and the right pad is clamped between the right connecting sleeve and the right connecting rod.

[0012] Furthermore, the upper die is mounted on a movable beam at the upper end of the multi-directional die forging press.

[0013] Furthermore, the lower die is installed on a workbench at the lower end of the multi-directional die forging press.

[0014] Furthermore, the left die is installed on the left movable crossbeam at the left end of the multi-directional forging press through a left plane module.

[0015] Furthermore, the right die is installed on the right movable crossbeam at the right end of the multi-directional forging press through a right plane module.

[0016] The advantages and beneficial effects of the utility model are:

[0017] 1. The roller forged by the integral forging die of the roller body of the utility model omits the welding process, so there is no problem of roller failure caused by welding defects. Since there is no welding process, there is no need to consider the problem of welding penetration at the weld, and the structural wall thickness at the weld of the original roller can be appropriately thickened, which effectively improves the stress condition of the roller during operation.

[0018] 2. From the perspective of material saving, the integral forging die of the track roller body of the utility model requires a draft angle of 5 degrees for the raceway surface of each half-track roller due to the production process of the half-track roller forgings, and the skin thickness is about 10mm, and one integral track roller has two skins. In summary, the integral track roller forging saves 2 draft angle materials and 1 skin material compared to the half-track roller forgings.

[0019] 3. The utility model adopts an inner punch and an outer punch sleeve structure for the integral forging die of the track roller body, which can perform small displacement forging of the inner hole and outer shape of the wheel body for multiple times during forging, thereby preventing the wheel body material from stacking up, the outer corners or edges from being insufficiently formed, or cracks from excessive drawing of the material due to one-time forging with the inner and outer punches. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the connection between the integral forging die of the track wheel body of the utility model and the multi-directional die forging press;

[0021] Figure 2 This is a diagram of the mold closing state of the integral forging mold for the track wheel body of the utility model;

[0022] Figure 3 It is a cross-sectional view of the mold-closing state of the integral forging mold of the track wheel body of the utility model;

[0023] Figure 4 It is a cross-sectional view of the initial state of the integral forging of the track wheel body of the utility model;

[0024] Figure 5 It is a cross-sectional view of the utility model of the complete state of the integral forging of the track wheel body;

[0025] Description of Reference Numerals

[0026] 1-upper die, 2-lower die, 3-left die, 4-right die, 5-round bar blank, 6-load wheel body, 7-right connecting flange, 8-right connecting rod, 9-right plane module, 10-right connecting sleeve, 11-right pad, 12-right outer punch, 13-right inner punch, 14-right inner punch driving cylinder, 15-right movable crossbeam, 16-movable beam, 17-workbench, 18-left inner punch driving cylinder, 19-left movable crossbeam, 20-left connecting flange, 21-left connecting rod, 22-left plane module, 23-left connecting sleeve, 24-left pad, 25-left outer punch, 26-left inner punch. DETAILED DESCRIPTION

[0027] The present invention will be further described in detail below through specific embodiments. The following embodiments are merely descriptive and not restrictive, and the protection scope of the present invention cannot be limited by them.

[0028] A roller body integral forging die comprises an upper die 1, a lower die 2, a left die 3 and a right die 4. The upper die 1 and the lower die 2 extrude the outer shape of a round bar blank 5 vertically inwards, and the left die 3 and the right die 4 extrude the inner hole of the round bar blank 5 in parallel inwards. The upper die 1 is mounted on a movable beam 16 at the upper end of a multi-directional die forging press; the lower die 2 is mounted on a workbench 17 at the lower end of the multi-directional die forging press; the left die 3 is mounted on a left movable crossbeam 19 at the left end of the multi-directional die forging press through a left plane module 22; and the right die 4 is mounted on a right movable crossbeam 15 at the right end of the multi-directional die forging press through a right plane module 9. The upper die 1 and the lower die 2 are responsible for the outer shape of the roller body 6, and the left die 3 and the right die 4 are responsible for the inner hole of the roller body. Through the combination of the upper die 1, the lower die 2, the left die 3 and the right die 4, the one-time forging of the roller body 6 with the outer shape first and the inner hole later is completed.

[0029] The left mold 3 includes a left connecting flange 20, a left connecting rod 21, a left plane module 22, a left connecting sleeve 23, a left cushion block 24, a left outer punch 25 and a left inner punch 26. The left connecting flange 20 is connected to one end of the left connecting rod 21 by screws. The left plane module 22 is sleeved on the left connecting rod 21. The left connecting sleeve 23 is sleeved on the left connecting rod 21 and is located at the right end of the left plane module 22. The left connecting sleeve 23 is connected to the left outer punch 25 by screws. The left inner punch 26 is connected to the other end of the left connecting rod 21 by a pin shaft. The left cushion block 24 is clamped between the left connecting sleeve 23 and the left connecting rod 21.

[0030] The right mold 4 includes a right connecting flange 7, a right connecting rod 8, a right plane module 9, a right connecting sleeve 10, a right pad 11, a right outer punch 12 and a right inner punch 13. The right connecting flange 7 is connected to one end of the right connecting rod 8 by screws. The right plane module 9 is sleeved on the right connecting rod 8. The right connecting sleeve 10 is sleeved on the right connecting rod 8 and is located at the left end of the right plane module 9. The right connecting sleeve 10 is connected to the right outer punch 12 by screws. The right inner punch 13 is connected to the other end of the right connecting rod 8 by a pin shaft. The right pad 11 is clamped between the right connecting sleeve 10 and the right connecting rod 8.

[0031] Working principle of this utility model:

[0032] The processed round bar blank 5 is placed into the integral forging die of the supporting wheel body 6 by a manipulator, and the upper die 1 installed on the movable beam 16 at the upper end of the multi-directional die forging press and the lower die 2 installed on the workbench 17 at the lower end of the multi-directional die forging press are closed up and down to press the round bar blank 5 into the shape of the supporting wheel body 6, and the left die 3 installed on the left movable beam 19 at the left end of the multi-directional die forging press and the right die 4 installed on the right movable beam 15 at the right end of the multi-directional die forging press extrude the round bar blank 5 at the same time, and the left inner punch installed in the left movable beam 19 of the multi-directional die forging press The head driving cylinder 18 and the right inner punch driving cylinder 14 installed in the right movable crossbeam 15 of the multi-directional die forging press respectively drive the left inner punch 26 and the right inner punch 13 to extrude the round rod blank 5 to form the inner hole of the supporting roller body 6. The left die 3 and the right die 4 form the outer shape and the inner hole of the supporting roller body 6 through multiple extrusions; the supporting roller body 6 after integral forging is placed under a special press, the skin of the inner hole is flushed out, and the flushing of the skin is completed; the supporting roller body 6 is subjected to post-forging heat treatment; the supporting roller body 6 is subjected to rough turning, drilling, and tapping finishing; and finally the overall forging of the supporting roller is completed.

[0033] Although the embodiments and drawings of the present invention are disclosed for illustrative purposes, those skilled in the art will appreciate that various substitutions, changes and modifications are possible without departing from the spirit and scope of the present invention and the appended claims. Therefore, the scope of the present invention is not limited to the contents disclosed in the embodiments and drawings.

Claims

1. A roller body integral forging die, characterized in that: It comprises an upper die (1), a lower die (2), a left die (3) and a right die (4); the upper die (1) and the lower die (2) extrude the outer shape of a round bar blank (5) vertically inwards, and the left die (3) and the right die (4) extrude the inner hole of the round bar blank (5) in parallel inwards; The left mold (3) comprises a left connecting flange (20), a left connecting rod (21), a left plane module (22), a left connecting sleeve (23), a left cushion block (24), a left outer punch (25) and a left inner punch (26); the left connecting flange (20) is connected to one end of the left connecting rod (21); the left plane module (22) is sleeved on the left connecting rod (21); the left connecting sleeve (23) is sleeved on the left connecting rod (21) and is located at the right end of the left plane module (22); the left connecting sleeve (23) is connected to the left outer punch (25); the left inner punch (26) is connected to the other end of the left connecting rod (21); and the left cushion block (24) is clamped between the left connecting sleeve (23) and the left connecting rod (21); The right mold (4) comprises a right connecting flange (7), a right connecting rod (8), a right plane module (9), a right connecting sleeve (10), a right cushion block (11), a right outer punch (12) and a right inner punch (13); the right connecting flange (7) is connected to one end of the right connecting rod (8); the right plane module (9) is sleeved on the right connecting rod (8); the right connecting sleeve (10) is sleeved on the right connecting rod (8) and is located at the left end of the right plane module (9); the right connecting sleeve (10) is connected to the right outer punch (12); the right inner punch (13) is connected to the other end of the right connecting rod (8); and the right cushion block (11) is clamped between the right connecting sleeve (10) and the right connecting rod (8).

2. The integral forging die for the track roller body according to claim 1, characterized in that: The upper die (1) is mounted on a movable beam at the upper end of the multi-directional die forging press.

3. The integral forging die for the track roller body according to claim 1, characterized in that: The lower die (2) is installed on a workbench at the lower end of the multi-directional die forging press.

4. The integral forging die for the track roller body according to claim 1, characterized in that: The left die (3) is installed on the left movable crossbeam (19) at the left end of the multi-directional die forging press through a left plane module (22).

5. The integral forging die for the track roller body according to claim 1, characterized in that: The right die (4) is installed on the right movable crossbeam (15) at the right end of the multi-directional die forging press through a right plane module (9).

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