Stroke amplification structure of lifting tray

Abstract

The utility model relates to the technical field of heat treatment quenching cooling equipment, in particular to a lifting tray stroke amplifying mechanism which comprises a rack, a bottom oil cylinder, a power beam, a connecting rod, a sliding rail, a movable pulley rack set, a top oil cylinder, a fixed pulley set and a guide wheel. According to the lifting charging tray stroke amplifying mechanism, the operation stroke of the oil cylinders is one fourth of that of the lifting charging tray, so that the time for a workpiece to enter oil liquid can be greatly shortened, the two oil cylinders are jointly and rigidly connected with the power beam on the premise that the two oil cylinders are axially collinear, on one hand, unbalance loading of the power beam is avoided, and on the other hand, lifting power of the lifting charging tray is increased; and rolling friction is adopted between the movable pulley rack group and the rack sliding rail, so that the phenomenon that the sliding guide rail is easy to move unsmoothly or is blocked is avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to heat treatment quenching cooling equipment technical field, concretely is a lift material disc stroke amplification structure. BACKGROUND

[0002] Quenching cooling equipment refers to the device for heat treatment quenching cooling, its function is to realize the quenching cooling of steel, reaches the required organization and performance, and at the same time should avoid the cracking and reduce deformation of workpiece in the cooling process.

[0003] For example, the vertical lifting material disc with the authorization announcement number "CN215854079U" is named a vertical lifting material disc, utilizes the lifting power assembly to drive the lifting assembly movement, thereby drives the bearing piece to ascend or descend, can continuously send the circuit board to the vertical lifting material disc, and the vertical lifting material disc continuously sends out the circuit board, thereby make the vertical heating furnace be in the continuous heating working condition, greatly improve the heating efficiency, but in order to facilitate workpiece quenching, the quenching oil tank has the liftable material disc, the lifting movement of lifting material disc is realized by the oil cylinder through the connecting pulley assembly, for large quenching oil tank, since the depth of tank body is larger, the running stroke of oil cylinder needs to be larger, it is difficult to meet the requirement that workpiece enters oil liquid quickly. UTILITY MODEL CONTENTS

[0004] The utility model discloses a quenching oil tank lifting material disc stroke amplification mechanism, the running stroke of oil cylinder is a quarter of the lifting material disc, so that the time of workpiece entering oil liquid can be greatly shortened.

[0005] To achieve the above object, the utility model provides the following technical scheme:

[0006] Design quenching oil tank lifting material disc stroke amplification mechanism, including frame, bottom oil cylinder, power beam, connecting rod, slide rail, movable pulley frame group, top oil cylinder, fixed pulley group, guide wheel.

[0007] Preferably, in the above-mentioned quenching oil tank lifting tray stroke amplification mechanism, the frame is welded from rectangular square tubes and I-beams. Four legs at the bottom of the frame are fixed to embedded parts in the foundation concrete. The frame has two "well"-shaped beams in the middle, with a cylinder connecting flange welded to the center of each beam. The bottom cylinder is fixed to the bottom "well"-shaped beam via the connecting flange, and the top cylinder is fixed to the top "well"-shaped beam via the connecting flange. The piston rods of the bottom and top cylinders are each threaded to a flange, and these two flanges are then bolted to two flanges on the upper and lower surfaces of the power beam. The connection consists of a connecting rod on each side of the power beam, which is bolted to it. The upper ends of the two connecting rods are welded to the bottom of the movable pulley frame assembly. The movable pulley frame assembly consists of a frame and pulley blocks. Each pulley block consists of a pulley, a shaft, a seated spherical roller bearing, and a bearing mounting plate. The bearing mounting plate is welded to the movable pulley frame, and the seated spherical roller bearing is bolted to the bearing mounting plate. Four guide wheels are installed on the upper and lower surfaces of the movable pulley frame assembly. The four guide wheels at the top and the four guide wheels at the bottom are collinear in pairs, and every two collinear guide wheels cooperate with the slide rails on the frame.

[0008] The proposed structure for amplifying the stroke of a lifting tray has the following advantages: the structure is reasonably and practically designed, the concept is ingenious and novel, and it is simple and convenient to use. The stroke of the cylinder side movement is one-quarter of the stroke of the lifting tray, which greatly accelerates the speed at which the workpiece enters the oil and reduces the stroke of the cylinder. In addition, the two cylinders are rigidly connected to the power beam under the premise of being axially collinear. This not only helps the power beam to avoid uneven loading, but also increases the lifting power of the lifting tray. The moving pulley frame assembly and the frame slide rail adopt rolling friction, thus avoiding the phenomenon of poor movement or jamming of the sliding guide rail. Attached Figure Description

[0009] Figure 1 This is a schematic diagram of the two-dimensional planar front view of this utility model;

[0010] Figure 2 This is a schematic diagram of a two-dimensional planar side view of the present invention.

[0011] In the diagram: 1. Frame, 2. Bottom cylinder, 3. Power beam, 4. Connecting rod, 5. Slide rail, 6. Moving pulley frame assembly, 7. Top cylinder, 8. Fixed pulley assembly, 9. Guide wheel. Detailed Implementation

[0012] The present invention will be further described below with reference to the accompanying drawings:

[0013] Example 1:

[0014] Please see Figures 1-2In this embodiment, a lifting tray stroke amplification structure includes a frame 1, a bottom cylinder 2, a power beam 3, a connecting rod 4, a slide rail 5, a moving pulley frame assembly 6, a top cylinder 7, a fixed pulley assembly 8, and a guide wheel 9.

[0015] The frame 1 is welded from rectangular square tubes and I-beams. The four legs at the bottom of the frame 1 are fixed to the embedded parts of the foundation concrete. The frame 1 has two "well" beams in the middle. The center of the "well" beams is welded with a hydraulic cylinder connecting flange. The bottom hydraulic cylinder 2 is fixed to the bottom "well" beam through the connecting flange, and the top hydraulic cylinder 7 is fixed to the top "well" beam through the connecting flange.

[0016] The piston rods of the bottom cylinder 2 and the top cylinder 7 are each connected to a flange via threads. These two flanges are then connected to two flanges on the upper and lower surfaces of the power beam 3 via bolts. The power beam 3 has a connecting rod 4 on each side, which is connected to it via bolts. The upper ends of the two connecting rods 4 are welded to the bottom of the moving pulley frame assembly 6.

[0017] When the power beam 3 is at the bottom, the top cylinder 7 is in the extended state, the bottom cylinder 2 is in the retracted state, and the movable pulleys on the movable pulley frame group 6 are in the lowest position. There are 4 steel wire ropes on the four pulleys. One end of the steel wire rope is fixed to the steel section of the frame 1, and the other end is connected to the four lifting points of the lifting platform. At this time, the moving ends of the 4 steel wire ropes are all in the shortest state, so that the quenching oil tank lifting tray rises to the highest position.

[0018] The travel stroke of the hydraulic cylinder is one-quarter of that of the lifting tray, which greatly shortens the time it takes for the workpiece to enter the hydraulic fluid. The two top hydraulic cylinders 7 and the bottom hydraulic cylinder 2 are rigidly connected to the power beam under the premise of being axially collinear. This helps the power beam 3 to avoid uneven loading and increases the lifting power of the lifting tray. The moving pulley frame group 6 and the frame slide rail 5 use rolling friction, thus avoiding the phenomenon of poor movement or jamming of the sliding guide rail.

[0019] The movable pulley frame assembly 6 consists of a frame and pulley blocks. Each pulley block consists of pulleys, shafts, mounted spherical roller bearings, and bearing mounting plates. The bearing mounting plates are welded to the movable pulley frame assembly 6. The mounted spherical roller bearings are bolted to the bearing mounting plates. Four guide wheels 9 are installed on the upper and lower surfaces of the movable pulley frame assembly 6. The four top guide wheels 9 and the four bottom guide wheels 9 are collinear in pairs. Every two collinear guide wheels 9 cooperate with the slide rails 5 on the frame 1.

[0020] Working principle:

[0021] The lifting tray stroke amplification structure is used to drive the lifting of the quenching tray in heat treatment. It can amplify the stroke distance of the lifting tray by utilizing a shorter cylinder output distance.

[0022] When the power beam 3 is at the bottom, the top oil cylinder 7 is in the extended state, the bottom oil cylinder 2 is in the retracted state, the movable pulley on the movable pulley rack group 6 is in the lowest position, four steel wires are respectively arranged on the four pulleys, one end of the steel wire is fixed on the section steel of the rack 1, and the other end is connected with four lifting points of the lifting platform, at this time, the moving end of the four steel wires reaches the shortest state, so that the quenching oil tank lifting disc rises to the highest position, so that the running stroke of the oil cylinder is one fourth of the lifting disc, so that the time of the workpiece entering the oil can be greatly shortened, the two top oil cylinders 7 and the bottom oil cylinder 2 are rigidly connected with the power beam under the premise of axial collinearity, so that on the one hand, the power beam 3 is not biased, and on the other hand, the lifting power of the lifting disc is increased, and the movable pulley rack group 6 and the rack slide rail 5 adopt rolling friction, so that the phenomenon that the sliding guide rail is prone to be not smooth or stuck is avoided.

[0023] Embodiment 2:

[0024] Please refer to Figure 1 and 2 , in the embodiment, when the power beam 3 is at the top, the top oil cylinder 7 is in the retracted state, the bottom oil cylinder 2 is in the extended state, the movable pulley on the movable pulley rack group 6 is in the highest position, four steel wires are respectively arranged on the four pulleys, one end of the steel wire is fixed on the section steel of the rack 1, and the other end is connected with four lifting points of the lifting platform, at this time, the moving end of the four steel wires reaches the longest state, so that the quenching oil tank lifting disc descends to the lowest position.

[0025] Although the utility model has been illustrated and described by referring to the preferred embodiments, it should be understood by those skilled in the art that various changes in form and details can be made within the scope of the claims.

Claims

1. A structure for amplifying the stroke of a lifting tray, characterized in that: The machine includes a frame (1), a bottom cylinder (2), a power beam (3), a connecting rod (4), a slide rail (5), a moving pulley frame assembly (6), a top cylinder (7), a fixed pulley assembly (8), and a guide wheel (9). The frame (1) is welded from rectangular square tubes and I-beams. The four legs at the bottom of the frame (1) are fixed to the embedded parts of the foundation concrete. The frame (1) has two "well"-shaped beams in the middle. A cylinder connecting flange is welded to the center of the "well"-shaped beam. The bottom cylinder (2) is fixed to the bottom "well"-shaped beam through the connecting flange. The top cylinder (7) is fixed to the top "well"-shaped beam through the connecting flange. The piston rods of the bottom cylinder (2) and the top cylinder (7) are each connected to a flange by threads. These two flanges are then connected to the moving pulley frame by bolts. The upper and lower surfaces of the power beam (3) are connected by two flanges. There is a connecting rod (4) on each side of the power beam (3) and it is connected to the power beam (3) by bolts. The upper ends of the two connecting rods (4) are connected to the bottom of the frame of the moving pulley frame group (6) by welding. The moving pulley frame group (6) consists of a frame and a pulley group. Each pulley group consists of a pulley, a shaft, a seated outer spherical ball bearing, and a bearing mounting plate. The bearing mounting plate is welded to the moving pulley frame group (6). The seated outer spherical ball bearing is installed on the bearing mounting plate by bolts. Four guide wheels (9) are installed on the upper and lower surfaces of the moving pulley frame group (6). The four guide wheels (9) at the top and the four guide wheels (9) at the bottom are collinear with each other. Each pair of collinear guide wheels (9) cooperates with the slide rail (5) on the frame (1).

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