Dismounting device for high-pressure rotor gear of air compressor

Abstract

The utility model discloses an air compressor high-pressure rotor gear dismounting device, and belongs to the technical field of mine air compressor maintenance tools. The device comprises a hydraulic jack, a connecting seat, a plurality of adjustable connecting rods and an arc-shaped buckle, the connecting seat is in threaded connection with the hydraulic jack, one end of each connecting rod is fixed to the connecting seat, and the other end of each connecting rod is provided with the arc-shaped buckle matched with the outer edge of a gear; the connecting base is further provided with an anti-falling assembly, and the anti-falling assembly comprises a bearing bag, a hook and a hanging belt and is used for bearing and fixing the detached gear. Controllable axial tension is provided through the hydraulic jack, and the uniform stress design of the arc-shaped buckle is combined, so that gear surface scratching and shaft neck deformation are avoided; a thread adjusting structure of the connecting rod can be matched with gears of different sizes, and universality is improved. Compared with the prior art, the tool has the advantages of being high in dismounting efficiency, small in precision loss, safe and reliable in operation and the like, and is suitable for rapid maintenance scenes of high-precision gears of mine air compressors.

Description

TECHNICAL FIELD

[0001] The utility model relates to mine air compressor maintenance tool technical field especially relates to a special device for mine air compressor high low pressure rotor gear dismounting. BACKGROUND

[0002] Because mine production operation environment is complex, the assembly precision of each part of the air compressor meeting the mine requirement is extremely high. The high low pressure rotor gear of the mine air compressor needs to be regularly maintained and dismounted due to long-term high load operation. At present, the industry generally adopts hammering, crowbar or simple hydraulic drawbar to dismount the gear, and the following problems exist:

[0003] 1. Uneven dismounting force can easily cause the gear surface to be damaged or scratched, and damage its precision; the dismounting error of the traditional method generally exceeds ±0.1mm, which cannot meet the reassembly requirement;

[0004] 2. Repeated knocking can cause the rotor journal to be deformed, affecting the service life of the equipment;

[0005] 3. The dismounting efficiency is low, and it takes 2-3 hours on average to dismount, and multiple people are needed to cooperate, which prolongs the downtime maintenance time and increases the production cost.

[0006] There is a lack of a special tool that can quickly dismount the gear and protect its precision in the prior art, so it is urgent to design a new dismounting device to solve the above problems. INVENTION CONTENTS

[0007] The utility model aims at providing a special device for dismounting the high low pressure rotor gear of an air compressor, which realizes uniform force dismounting of the gear through optimized structure design, avoids damaging the gear and the rotor, and improves the dismounting efficiency and shortens the maintenance time.

[0008] In order to solve the above technical problems, the utility model adopts the following technical scheme:

[0009] An air compressor high pressure rotor gear dismounting device, comprising a hydraulic jack, a connecting seat is connected to the hydraulic jack, a plurality of connecting rods are arranged on the connecting seat, the connecting seat is fixed to one end of the plurality of connecting rods, an arc-shaped buckle is arranged at the other end of the plurality of connecting rods, a fixing groove is arranged at the center of the arc-shaped buckle, a clamping port is arranged at the lower end of the fixing groove, and the width of the clamping port is greater than or equal to the diameter of the shaft on which the gear is arranged.

[0010] Further, a falling prevention assembly is arranged on the connecting seat, which is used for receiving the dismounted gear and preventing it from falling, and comprises a receiving bag, one end of the receiving bag is connected to the connecting seat, and the other end is connected to the arc-shaped buckle.

[0011] Further, the connecting rod is provided with a screw thread, the connecting seat is provided with a plurality of through holes, the connecting rod is arranged in the through holes, the plurality of connecting rods are installed in one-to-one correspondence with the plurality of through holes, and the screw thread is screwed with a nut, and the nut is arranged on the side, away from the arc-shaped buckle, of the connecting seat.

[0012] Further, the receiving bag is fixedly connected to the connecting seat.

[0013] Further, the anti-falling assembly further comprises a hook and a hanging belt, and the hook is arranged on the arc-shaped buckle and located on the side, close to the connecting seat, of the arc-shaped buckle, the hook is higher than the axis of the connecting rod, the upper edges of the left and right sides of the receiving bag are located on the same horizontal plane as the axis of the connecting rod, the hanging belt is arranged on the end, close to the arc-shaped buckle, of the receiving bag, and the hook is used for hanging the hanging belt.

[0014] Further, the bottom surface of the receiving bag is an arc surface.

[0015] Further, the connecting seat is provided with a jack mounting hole, the outer surface of the hydraulic jack is provided with a screw thread, and the hydraulic jack is screwed into the jack mounting hole.

[0016] Further, the arc-shaped buckle is an annular structure with a missing 1 / 4 circumference.

[0017] Compared with the prior art, the utility model has the following beneficial effects:

[0018] 1. The arc-shaped buckle is combined with the outer edge of the gear, so that the dismounting force is uniformly distributed, and local stress concentration is avoided.

[0019] 2. The gear can be stably caught when the gear is dismounted, so that the gear surface is prevented from being damaged or scratched.

[0020] 3. The relative positions of the connecting rod and the connecting seat are adjusted through the screw thread and the nut, the radial length of the device can be changed, gears of different sizes can be adapted, and the device has high universality.

[0021] 4. The controllable axial tension is provided through the hydraulic jack, the traditional impact dismounting mode is replaced, and the operation safety is significantly improved. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 It is a top view of the utility model;

[0023] Figure 2 It is Figure 1 It is a local enlarged view of A in the figure;

[0024] Figure 3 It is a front view of the utility model;

[0025] Figure 4 This is a schematic diagram showing the connection between the connector and the receiving bag;

[0026] Figure 5 This is a connection diagram of Embodiment 1 of the present utility model;

[0027] Figure 6 This is a schematic diagram of the arc-shaped buckle of this utility model;

[0028] In the diagram, 1-hydraulic jack, 2-connecting seat, 3-connecting rod, 4-arc buckle, 401-fixing groove, 402-card interface, 5-receiving bag, 6-jack mounting hole, 7-through hole, 8-nut, 9-hook, 10-hanging strap. Detailed Implementation

[0029] The technical solution of this utility model will be further described below with reference to the accompanying drawings.

[0030] Example 1

[0031] like Figures 1-5 As shown, a high-pressure rotor gear disassembly device for an air compressor includes a hydraulic jack 1 with a rated pressure of 10 MPa, adapted to the maximum disassembly resistance of the rotor of a mining air compressor. The hydraulic jack 1 is used to abut against the shaft on which the gear is installed when disassembling the gear, ensuring that the axis of the hydraulic jack 1 is perpendicular to the plane of the connecting seat 2. The connecting seat 2 is connected to the hydraulic jack 1, and a screw hole is provided in the center of the connecting seat 2. The outer surface of the hydraulic jack 1 is provided with threads, and the hydraulic jack 1 is screwed into the screw hole. Two connecting rods 3 are welded to one end face of the connecting seat 2 near the arc-shaped buckle 4. The two connecting rods 3 are respectively welded to the left and right sides of the connecting seat 2, and the other ends of the two connecting rods 3 are welded to the left and right sides of the arc-shaped buckle 4. The arc-shaped buckle 4 is an annular structure missing 1 / 4 of its circumference. The middle part of the annular structure is a fixing groove for clamping the shaft on which the gear is installed. The missing part of the circumference is a clamping interface, through which the arc-shaped buckle is clamped onto the shaft on which the gear is installed from top to bottom.

[0032] The connecting seat 2 is equipped with an anti-drop component, including a receiving bag 5, which is used to receive the disassembled gear and prevent it from falling. The receiving bag can be made of soft materials such as canvas. The bottom surface of the receiving bag 5 is curved to provide a certain deformation allowance and prevent the falling gear from popping out of the receiving bag 5. One end of the receiving bag 5 is fixedly connected to the connecting seat 2. The other end of the receiving bag 5 has two hanging straps 10 on the left and right sides of its upper side. The arc-shaped buckle 4 has two hooks 9 on the left and right sides of its end near the connecting seat 2. The two hanging straps 10 are respectively hung on the two hooks 9. Since the receiving bag 5 is made of canvas, after the hanging straps 10 are hung, the upper edge of the receiving bag 5 near the arc-shaped buckle 4 is close to the lower part of the two connecting rods 3. At the same time, the upper edges of the left and right sides of the receiving bag 5 are on the same horizontal plane as the axis of the two connecting rods 3. The purpose is to provide tight protection for the gear and prevent the gear from falling and being scratched.

[0033] The use process of the air compressor high-pressure rotor gear dismounting device is as follows: in use, first, the hydraulic jack 1 is installed in the screw hole, then the clamping interface 402 of the arc-shaped buckle 4 is downwardly sleeved on the shaft where the gear to be dismounted is located, the shaft is sleeved in the fixed groove 401, it is ensured that the surface of the arc-shaped buckle 4 close to the connecting seat 2 side is tightly attached to the gear, then the position of the hydraulic jack 1 is adjusted, until the end of the hydraulic jack 1 close to the shaft is tightly pressed against the outer end surface of the shaft, it is ensured that the central axis of the hydraulic jack 1 and the axis of the shaft where the gear is installed are located on a straight line, and then the left and right two hooks 9 at the upper end of the receiving bag 5 are respectively hung on the left and right two hooks 9 of the arc-shaped buckle 4.

[0034] The hydraulic jack 1 is started, and the axial tension is slowly applied, the tension is transmitted to the arc-shaped buckle 4 through the connecting rod 3, the arc-shaped buckle 4 is driven to move stably along the axial direction under the uniform tension, until the gear is completely separated from the shaft and falls into the receiving bag 5, then the gear in the receiving bag 5 is taken out, and then the dismounting device is taken off from the shaft.

[0035] According to the test of the embodiment 1, in the dismounting process, the gear is uniformly stressed, and surface scratches or deformation do not occur; the single dismounting time is shortened from two hours of the traditional method to thirty minutes, and the gear precision error is controlled within ±0.02mm, which meets the equipment reinstallation requirements.

[0036] Embodiment 2

[0037] On the basis of the embodiment 1, one end of the two connecting rods 3 close to the connecting seat 2 is provided with a threaded end, the connecting seat 2 is provided with two through holes 7, the two connecting rods 3 are respectively arranged in the two through holes 7, then the nut 8 is arranged at the end of the connecting rod 3, the connecting rod 3 is locked by the nut 8, and the connecting rod 3 is prevented from falling off from the connecting seat 2.

[0038] Through the combined structure of the connecting rod 3 and the connecting seat 2, the axial adjustment range of the device can be adjusted, more gears with different radial lengths can be adapted, and the universality of the device is stronger.

[0039] The device has the advantages of simple structure, convenient operation, application to dismounting scenes of various high-precision gears and significant popularization value.

Claims

1. An air compressor high pressure rotor gear dismounting device comprising a hydraulic jack (1), characterized in that, The hydraulic jack (1) is connected with a connecting seat (2), the connecting seat (2) is provided with a plurality of connecting rods (3), the connecting seat (2) is fixed to one end of the plurality of connecting rods (3), the other end of the plurality of connecting rods (3) is provided with an arc-shaped buckle (4), the arc-shaped buckle (4) is provided with a fixing groove (401) in the center, the lower end of the fixing groove is provided with a clamping port (402), and the width of the clamping port (402) is greater than or equal to the diameter of the shaft where the gear is located.

2. An air compressor high pressure rotor gear dismounting device according to claim 1, characterized in that, The connecting seat (2) is provided with a falling prevention assembly, the falling prevention assembly is used for receiving the disassembled gear and preventing it from falling, and comprises a receiving bag (5), one end of the receiving bag (5) is connected to the connecting seat (2), and the other end is connected to the arc-shaped buckle (4).

3. An air compressor high pressure rotor gear disassembly device according to claim 2, characterized in that, The connecting rod (3) is provided with a thread, the connecting seat (2) is provided with a plurality of through holes (7), the connecting rod (3) is provided in the through hole (7), the plurality of connecting rods (3) and the plurality of through holes (7) are one-to-one corresponding installation, and the thread is screwed with a nut (8), and the nut (8) is arranged on the side of the connecting seat (2) away from the arc-shaped buckle (4).

4. An air compressor high pressure rotor gear disassembly device according to claim 3, characterized in that, The receiving bag (5) is fixedly connected to the connecting seat (2).

5. An air compressor high pressure rotor gear disassembly device according to claim 4, wherein, The falling prevention assembly further comprises a hook (9) and a hanging belt (10), which is used for fixing the receiving bag (5) at one end of the arc-shaped buckle (4), the hook (9) is arranged on the arc-shaped buckle (4), the hook (9) is located on the side of the arc-shaped buckle (4) close to the connecting seat (2), the hook (9) is higher than the axis of the connecting rod (3), the upper edges of the left and right sides of the receiving bag (5) are located on the same horizontal plane as the axis of the connecting rod (3), the hanging belt (10) is arranged at one end of the receiving bag (5) close to the arc-shaped buckle (4), and the hook (9) is used for hanging the hanging belt (10).

6. An air compressor high pressure rotor gear disassembly device according to claim 5, wherein, The bottom surface of the receiving bag (5) is an arc surface.

7. An air compressor high pressure rotor gear disassembly device according to claim 6, wherein, The connecting seat (2) is provided with a jack mounting hole (6), and the outer surface of the hydraulic jack (1) is provided with a thread.

8. The air compressor high pressure rotor gear disassembly device of claim 1, wherein, The arc-shaped buckle (4) is an annular structure with a missing 1 / 4 circumference.

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