Rolling device for as-cast bainite cylinder sleeve

Abstract

The utility model belongs to the technical field of cylinder sleeve rolling devices, and particularly relates to an as-cast bainite cylinder sleeve rolling device which comprises a hydraulic oil cylinder, a rolling wheel, a bottom plate, a supporting seat and a rolling wheel supporting shaft, the supporting seat and the hydraulic oil cylinder are connected to the bottom plate through bolts, a sliding hole is formed in the supporting seat, and the rolling wheel supporting shaft is arranged in the sliding hole. The front end and the rear end of the sliding hole are respectively provided with a shaft sleeve, the rolling wheel supporting shaft penetrates through the sliding hole and the shaft sleeves and is connected with the shaft sleeves in a sliding mode, an anti-rotation guiding piece is arranged between the shaft sleeves and the rolling wheel supporting shaft, and the end, away from the rolling wheel, of the rolling wheel supporting shaft is detachably connected with a piston rod of the hydraulic oil cylinder through a connector. And a limiting piece for preventing the supporting seat and the hydraulic oil cylinder from axially displacing along the piston rod is arranged on the bottom plate. The rolling wheel is simple in structure and convenient to disassemble and maintain, the stability of the rolling wheel in the working process can be improved, and the rolling quality of the tool withdrawal groove of the as-cast bainite cylinder sleeve can be guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of cylinder liner rolling device, and concretely relates to a casted bainite cylinder liner rolling device. BACKGROUND

[0002] During the operation of the engine, the cylinder liner relief groove part needs to bear high temperature and high pressure harsh working conditions, which can easily lead to fatigue cracking problems in the part, seriously affecting the performance and service life of the engine.

[0003] At present, rolling as an effective surface strengthening technology can significantly improve the fatigue strength of the cylinder liner relief groove part, thereby reducing the occurrence of cracking. The Chinese patent document with the application number CN200910032654.1 discloses a wet cylinder liner rolling device, which comprises a hydraulic cylinder, the hydraulic cylinder is connected with a rolling reversing valve through an oil pipe, the rolling reversing valve is connected with an oil pump through an oil pipe, a system check valve is connected on the oil pipe between the rolling reversing valve and the oil pump, a system pressure reducing valve is arranged on the oil pipe between the rolling reversing valve and the system check valve, a system overflow valve is connected with the oil pump in parallel through an oil pipe, a rolling wheel is arranged at the end of the hydraulic cylinder, and the hydraulic cylinder is movably connected with the rolling wheel through a support. Although the scheme can realize the rolling of the cylinder liner relief groove part, the rolling wheel is prone to displacement during operation due to the need to apply thousands of newtons of force during rolling, which affects the rolling quality.

[0004] Therefore, the existing rolling device needs to be improved to improve the stability of the rolling wheel during operation and ensure the rolling quality of the cylinder liner relief groove part. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing a casted bainite cylinder liner rolling device to improve the stability of the rolling wheel during operation and ensure the rolling quality of the cylinder liner relief groove part.

[0006] In order to realize the above-mentioned purpose, the utility model provides the following technical scheme:

[0007] A casted bainite cylinder liner rolling device, comprising a hydraulic cylinder, a rolling wheel, a bottom plate, a support seat and a rolling wheel support shaft, the support seat and the hydraulic cylinder are connected on the bottom plate through bolts respectively, a sliding hole is arranged in the support seat, shaft sleeves are arranged at the front and rear ends of the sliding hole respectively, the rolling wheel support shaft is arranged in the sliding hole and the shaft sleeve and is slidably connected with the shaft sleeve, an anti-rotation guide piece is arranged between the shaft sleeve and the rolling wheel support shaft, one end of the rolling wheel support shaft away from the rolling wheel is detachably connected with the piston rod of the hydraulic cylinder through a connector, and the bottom plate is provided with a limiting piece for preventing the support seat and the hydraulic cylinder from being axially displaced along the piston rod.

[0008] Preferably, the anti-rotation guide comprises two guide flat keys, the two guide flat keys are symmetrically arranged on both sides of the rolling wheel support shaft, the inner side of the shaft sleeve is provided with a key groove I matched with the guide flat keys, and the guide flat keys are in sliding connection with the key groove I, both sides of the rolling wheel support shaft are provided with key grooves II matched with the guide flat keys, and the guide flat keys are embedded in the key grooves II, so that rotation of the rolling wheel support shaft during work can be avoided.

[0009] Preferably, the limiting piece comprises limiting grooves I, limiting grooves II and a limiting flat key, the two limiting grooves I are arranged in parallel on the top of the bottom plate, the two limiting grooves II are arranged on the bottom of the support seat and the hydraulic oil cylinder respectively, the two limiting grooves I and the two limiting grooves II are arranged in upper and lower correspondence, and the limiting grooves I and the corresponding limiting grooves II are connected through the limiting flat key, and the limiting flat key is arranged perpendicularly to the axial direction of the piston rod. This arrangement can prevent the hydraulic oil cylinder and the support seat from being misaligned with each other, and ensure the flexible entry and exit of the rolling wheel support shaft in the support seat.

[0010] Preferably, one end of the connector is provided with a T-shaped slot penetrating up and down, and the other end is provided with a threaded rod, the threaded rod is in threaded connection with a threaded hole at the end of the piston rod, and the end of the rolling wheel support shaft close to the T-shaped slot is provided with a clamping part matched with the T-shaped slot. This arrangement facilitates the disassembly and assembly of the hydraulic oil cylinder and the rolling wheel support shaft, and improves the maintainability of the device.

[0011] The utility model also includes other devices or components that can make the as-cast bainite cylinder sleeve rolling device work normally, which are all conventional technical means in the field. In addition, the devices or components not specified in the utility model, such as hydraulic cylinders, shaft sleeves, etc. all adopt existing technologies.

[0012] The working principle of the utility model is that when in use, the device is directly installed on a numerical control machine tool for machining the cylinder sleeve tool withdrawal groove, after the as-cast bainite cylinder sleeve tool withdrawal groove is machined, the as-cast bainite cylinder sleeve is kept rotating, the hydraulic oil cylinder is controlled to work to push the piston rod forward, the rolling wheel support shaft is slid forward along the support seat, the rolling wheel is driven to abut in the as-cast bainite cylinder sleeve tool withdrawal groove to achieve the rolling purpose, after rolling is completed, the hydraulic oil cylinder is controlled to retract the piston rod backward, the rolling wheel support shaft is driven to retreat, and then the rolling wheel is separated from the as-cast bainite cylinder sleeve.

[0013] Compared with the prior art, the utility model has the following beneficial effects:

[0014] The utility model has the advantages of simple structure, convenient disassembly and maintenance, and improved stability during the working process of the rolling wheel, which is beneficial to ensuring the rolling quality of the as-cast bainite cylinder sleeve tool withdrawal groove part. BRIEF DESCRIPTION OF DRAWINGS

[0015] The utility model will be further described below in combination with the drawings and examples.

[0016] Fig. 1 is the whole structure schematic diagram of the utility model in embodiment.

[0017] Fig. 2 is the local structure explosion schematic diagram of the utility model in embodiment.

[0018] Fig. 3 is the structure schematic diagram of the shaft sleeve of the utility model in embodiment.

[0019] Fig. 4 is the combined structure schematic diagram of the shaft sleeve, the guide flat key and the rolling wheel support shaft of the utility model in embodiment.

[0020] In the drawing: 1-hydraulic cylinder, 2-rolling wheel, 3-bottom plate, 4-supporting seat, 5-rolling wheel support shaft, 6-shaft sleeve, 7-connector, 8-guide flat key, 9-keyway one, 10-keyway two, 11-limiting groove two, 12-limiting flat key, 13-T-shaped groove, 14-threaded rod, 15-clamping part, 16-upper cavity oil port, 17-lower cavity oil port. DETAILED DESCRIPTION

[0021] The utility model is clearly described below in combination with the drawings and specific embodiments in the embodiment of the utility model, and the description herein is only used to explain the utility model, but not as the limitation to the utility model. Based on the embodiment in the utility model, all other embodiments obtained by the person skilled in the art without making creative labor, any modification, equivalent replacement, improvement, etc. should be included in the protection scope of the utility model.

[0022] EMBODIMENT

[0023] As Figs. 1-4 shown, the utility model provides a casted bainite cylinder sleeve rolling device, including hydraulic cylinder 1, rolling wheel 2, bottom plate 3, supporting seat 4 and rolling wheel support shaft 5, the supporting seat and hydraulic cylinder are bolted on the bottom plate respectively, the sliding hole is equipped in the supporting seat, the front and rear ends of the sliding hole are provided with shaft sleeve 6 respectively, the rolling wheel support shaft is equipped in the sliding hole and the shaft sleeve, and is slidably connected with the shaft sleeve, the shaft sleeve and the rolling wheel support shaft are equipped with anti-rotation guide piece, the one end of the rolling wheel support shaft away from the rolling wheel is detachably connected with the piston rod of hydraulic cylinder through connector 7, the bottom plate is provided with limiting piece preventing the axial displacement of supporting seat and hydraulic cylinder along the piston rod.

[0024] In the embodiment, the anti-rotation guide piece comprises two guide keys 8, which are symmetrically arranged on both sides of the rolling wheel support shaft, the inner side of the shaft sleeve is provided with a key groove I 9 matched with the guide keys, and the guide keys are in sliding connection with the key groove I, both sides of the rolling wheel support shaft are provided with a key groove II 10 matched with the guide keys, and the guide keys are embedded in the key groove II, so that rotation of the rolling wheel support shaft during operation can be avoided.

[0025] In the above embodiment, the limiting piece comprises limiting grooves I, limiting grooves II 11 and limiting keys 12, two limiting grooves I are arranged in parallel on the top of the bottom plate, two limiting grooves II are arranged on the bottom of the support seat and the hydraulic cylinder respectively, the two limiting grooves I and the two limiting grooves II are arranged in a top-down corresponding manner, and the limiting grooves I and the corresponding limiting grooves II are connected by the limiting keys, and the limiting keys are arranged perpendicularly to the axial direction of the piston rod. This arrangement can prevent the hydraulic cylinder and the support seat from being misaligned with each other, and ensure the flexible entry and exit of the rolling wheel support shaft in the support seat.

[0026] Specifically, one end of the connector is provided with a T-shaped slot 13 penetrating up and down, and the other end is provided with a threaded rod 14, which is in threaded connection with a threaded hole (not shown in the figure) at the end of the piston rod, and the end of the rolling wheel support shaft close to the T-shaped slot is provided with a clamping part 15 matched with the T-shaped slot. This arrangement facilitates the disassembly and assembly of the hydraulic cylinder and the rolling wheel support shaft, and improves the maintainability of the device.

[0027] The hydraulic cylinder is provided with an upper cavity oil port 16 and a lower cavity oil port 17, and the upper cavity oil port and the lower cavity oil port are respectively provided with an oil nozzle I (not shown in the figure) and an oil nozzle II (not shown in the figure), and the oil nozzle I and the oil nozzle II are connected with a hydraulic reversing valve (not shown in the figure) through an oil pipe (not shown in the figure). The hydraulic reversing valve can make the upper cavity oil port and the lower cavity oil port exchange oil inlet and oil return, and realize the forward and backward movement of the hydraulic cylinder.

[0028] The working principle of the utility model is that when in use, the device is directly installed on a numerical control machine tool (not shown in the figure) for machining the tool withdrawal groove of the cast state bainite cylinder sleeve, after the machining of the tool withdrawal groove of the cast state bainite cylinder sleeve is completed, the cast state bainite cylinder sleeve is kept rotating, the hydraulic cylinder is controlled to work to push the piston rod forward, the rolling wheel support shaft is driven to slide forward along the support seat, the rolling wheel is driven to abut in the tool withdrawal groove of the cast state bainite cylinder sleeve to realize the rolling purpose, after the rolling is completed, the hydraulic cylinder is controlled to retract the piston rod backward, the rolling wheel support shaft is driven to retreat, and then the rolling wheel is separated from the cast state bainite cylinder sleeve.

[0029] The above has described the embodiments of the utility model, the above description is exemplary, not exhaustive, and is not limited to the disclosed embodiments. Many modifications and changes are obvious to those skilled in the art without departing from the scope and spirit of the described embodiments.

Claims

1. An as-cast bainite cylinder liner roll-pressing device comprising a hydraulic cylinder and a roll-pressing wheel, characterized by: Also include the bottom plate, support seat and rolling wheel support shaft, the support seat and hydraulic cylinder are bolted on the bottom plate respectively, the support seat is equipped with sliding hole, the front and rear ends of the sliding hole are provided with shaft sleeve respectively, the rolling wheel support shaft is provided in the sliding hole and the shaft sleeve, and is in sliding connection with the shaft sleeve, the shaft sleeve and the rolling wheel support shaft are equipped with anti-rotation guide, the end of the rolling wheel support shaft away from the rolling wheel is detachably connected with the piston rod of the hydraulic cylinder through the connector, the bottom plate is provided with a limiting piece for preventing the support seat and the hydraulic cylinder from being displaced along the axial direction of the piston rod.

2. The cast-bainite cylinder liner rolling device according to claim 1, characterized by: The anti-rotation guide includes two guide flat keys, the two guide flat keys are symmetrically arranged on both sides of the rolling wheel support shaft, the inner side of the shaft sleeve is provided with a key groove one matched with the guide flat key, and the guide flat key is in sliding connection with the key groove one, the two sides of the rolling wheel support shaft are provided with key grooves two matched with the guide flat keys, and the guide flat keys are embedded in the key grooves two.

3. The cast-bainite cylinder liner rolling device according to claim 1, characterized by: The limiting piece includes limiting groove one, limiting groove two and limiting flat key, two limiting groove ones are arranged in parallel on the top of the bottom plate, two limiting groove twos are arranged on the bottom of the support seat and the hydraulic cylinder respectively, the two limiting groove ones and the two limiting groove twos are arranged in upper and lower correspondence, and the limiting groove one and the corresponding limiting groove two are connected by the limiting flat key, and the limiting flat key is perpendicular to the axial direction of the piston rod.

4. The cast-bainite cylinder liner rolling device according to claim 1, characterized by: One end of the connector is provided with a T-shaped slot penetrating up and down, the other end is provided with a threaded rod, the threaded rod is in threaded connection with the threaded hole at the end of the piston rod, and the end of the rolling wheel support shaft close to the T-shaped slot is provided with a clamping part matched with the T-shaped slot.

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