Dismounting device for embedded accessories of mining equipment

Abstract

The utility model discloses an embedded accessory dismounting device for mining equipment, which relates to the technical field of coal mining and is used for dismounting a small embedded flange coupling from a wheel shaft of the flange coupling. Flange bolt holes are formed in the circumferential direction of the coupling; comprising a fixing frame which is detachably connected with paired wheels and a rammer structure which is fixed above the fixing frame, the fixing frame comprises a dismounting plate, a connecting bolt for connecting the dismounting plate and a flange bolt hole, and an ejector rod which is fixed on the dismounting plate, and the initial position of the ejector rod abuts against a wheel shaft of the coupling; the dismounting plate and the coupling are fixed into a whole through the connecting bolt; the rammer structure comprises an operating rod fixed on the dismounting plate and a rammer mounted on the operating rod in a sliding manner; two limiting pieces are arranged on the operation rod in a spaced mode, and the rammer slides between the two limiting pieces. According to the device, static pressure and impact force are combined, the disassembly efficiency of the paired wheel is improved, meanwhile, the device does not make contact with peripheral parts of the paired wheel, only axial force is provided for the paired wheel, and therefore damage to the peripheral parts is avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of coal mining, especially relates to a mining equipment embedded accessory dismounting device. BACKGROUND

[0002] In the maintenance process of coal mine mechanical and electrical equipment, because of long time use, so between the wheel and its wheel axle will form a certain degree of rust. For some large -scale cylinder pair wheel, mainly use hydraulic puller (puller) or special dismounting tool, the dog of puller is fixed in the pair wheel edge, the center centering needle is resisted to the axle end, slow pressure, even force will be pulled out from the axle.

[0003] But for some small (outer diameter less than 200mm below) and embedded flange pair wheel, because the structure is smaller, there is not enough space to install puller, and the pair wheel edge is not exposed, cannot directly use the dog of puller to hook, then cannot use this method to dismount. The pair wheel of this structure is mainly relied on artificial to pull out or pry out from the equipment little by little when dismounting, not only low efficiency, but also extremely easy to damage the surrounding parts of pair wheel, increase accessory repair process and overhaul cost. UTILITY MODEL CONTENTS

[0004] The utility model aims at providing a mining equipment embedded accessory dismounting device, can efficiently, safely dismount main cylinder pair wheel, simultaneously avoid the damage to surrounding parts.

[0005] In order to realize the above -mentioned purpose, the utility model provides a mining equipment embedded accessory dismounting device for dismounting small embedded flange pair wheel from its wheel axle, the circumferential direction of pair wheel is provided with flange bolt hole, including the fixed frame that can be detachably connected pair wheel and the ram structure fixed above the fixed frame, the fixed frame includes dismounting plate, the connecting bolt of connecting dismounting plate and flange bolt hole and the top rod fixed on dismounting plate and its initial position is abutted on the wheel axle of pair wheel, connecting bolt fixes dismounting plate and pair wheel as a whole, the ram structure includes the operation rod fixed on dismounting plate and the ram slidingly installed on operation rod, two limit sheets are arranged on operation rod, and the ram slides between two limit sheets.

[0006] With the above structure, the dismounting plate and the wheel are fixed as a whole through the connecting bolt, at this time, the jack rod abuts against the wheel shaft of the wheel and provides a certain static pressure to the wheel shaft; then the fixed frame is hit through the hammer structure to provide an impact force to the fixed frame, the jack rod of the fixed frame transmits the impact force to the wheel shaft, the wheel shaft provides a reverse force to the jack rod, forcing the jack rod to drive the wheel to separate from the wheel shaft, and the auxiliary wheel breaks through the rust or interference resistance. The device combines static pressure and impact force to improve the efficiency of dismounting the wheel, and the device does not contact the surrounding parts of the wheel, and only provides an axial force to the wheel, thereby avoiding damage to the surrounding parts.

[0007] Preferably, the dismounting plate is provided with a mounting hole matched with the flange bolt hole and an intermediate threaded hole matched with the wheel shaft; the mounting hole is used for installing the connecting bolt, and the bottom of the connecting bolt is tightened in the flange bolt hole; the intermediate threaded hole is used for installing the jack rod. Through the arrangement of this structure, the connecting bolt and the jack rod can be conveniently replaced to adapt to different specifications of the wheel.

[0008] Preferably, the connecting bolt is provided with a plurality of connecting bolts, and the plurality of connecting bolts are uniformly arranged around the jack rod. Through the arrangement of this structure, the stability of the connection between the dismounting plate and the wheel can be ensured, and the stress stability can be ensured.

[0009] Preferably, the jack rod is a threaded rod, which is screwed into the intermediate threaded hole from above and then gradually abuts against the wheel shaft. Through the arrangement of this structure, the size of the static pressure can be adjusted by screwing the jack rod in the intermediate threaded hole.

[0010] Preferably, the shape of the hammer is in the form of a dumbbell, the inner sides of the two hammer heads are designed in arc shape, and the top ends of the two ends of the hammer heads are designed in plane. Through the arrangement of this structure, the conversion rate of the impact force of the hammer is maximized.

[0011] Preferably, the operation rod is coaxial with the wheel shaft of the wheel. Through the arrangement of this structure, the impact force of the hammer can be maximally transmitted to the jack rod.

[0012] Preferably, the jack rod comprises a tightening screw rod, a connecting screw rod and a spacer block located between the tightening screw rod and the connecting screw rod; the tightening screw rod is fitted in the intermediate threaded hole and abuts against the outside of the wheel shaft at the bottom; when the tightening screw rod abuts against the wheel shaft, the spacer block abuts against the dismounting plate; the connecting screw rod is screwed with the bottom of the operation rod. Through the arrangement of this structure, the positional relationship between the hammer structure and the jack rod can be reasonably arranged, and the spacer block increases the force transmission surface between the hammer structure and the dismounting plate, thereby improving the conversion rate of the impact force of the hammer.

[0013] Preferably, the mounting hole is a waist-shaped hole, the long axis direction of the waist-shaped hole is along the radial direction of the wheel, and the connecting bolt is adjustably installed in the waist-shaped hole. Through this setting, the wheel flange bolt hole of different sizes and positions can be adapted.

[0014] The beneficial effects of the present application are as follows:

[0015] The mining equipment embedded accessory dismounting device of the present application can efficiently and safely dismount the main roller against the wheel, and meanwhile, the damage to the surrounding parts is avoided. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 is a structural schematic view of the mining equipment embedded accessory dismounting device in the embodiment of the present application;

[0017] Figure 2 is Figure 1 a structural schematic view of the dismounting plate.

[0018] In the figure, 1, against the wheel, 11, flange bolt hole, 12, wheel shaft, 2, fixed frame, 21, dismounting plate, 211, middle threaded hole, 212, mounting hole, 22, top rod, 221, top tight screw rod, 222, connecting screw rod, 223, spacer block, 23, connecting bolt, 3, ram structure, 31, operation rod, 32, ram, 33, limiting sheet. DETAILED DESCRIPTION

[0019] The present application will be further described below in combination with the drawings.

[0020] The directions involved in the present specification are based on the directions of the mining equipment embedded accessory dismounting device when it is working normally, and are not limited to the directions when it is stored or transported, and only represent the relative positional relationship, and do not represent the absolute positional relationship.

[0021] A mining equipment embedded accessory dismounting device is used for dismounting a small-sized (outer diameter less than 200mm) and embedded flange type against wheel 1. The against wheel 1 is provided with flange bolt holes 11 in the circumferential direction, which are used for installing decorative covers or other accessories. The use of the present device is realized by means of the flange bolt holes 11.

[0022] As Figure 1 and Figure 2 shown in the drawings, a mining equipment embedded accessory dismounting device comprises a fixed frame 2 detachably connected with the against wheel 1 and a ram structure 3 fixed above the fixed frame 2. The fixed frame 2 comprises a dismounting plate 21, connecting bolts 23 connecting the dismounting plate 21 with the flange bolt holes 11, and a top rod 22 fixed on the dismounting plate 21 and abutting against the wheel shaft 12 in the initial position. The connecting bolts 23 fix the dismounting plate 21 and the against wheel 1 as a whole.

[0023] The dismounting plate 21 is provided with a mounting hole 212 matched with the flange bolt hole 11 and a middle threaded hole 211 matched with the wheel shaft 12. The mounting hole 212 is used for mounting the connecting bolt 23, and the middle threaded hole 211 is used for mounting the top rod 22.

[0024] The connecting bolt 23 is provided with a plurality of connecting bolts 23 which are uniformly arranged around the top rod 22. In the embodiment, the connecting bolt 23 is provided with two connecting bolts which are symmetrically arranged on both sides of the top rod 22. Of course, the number of the connecting bolt 23 can be increased according to the actual application, but it must be uniformly distributed around the top rod 22 to ensure uniform stress.

[0025] The connecting bolt 23 passes through the mounting hole 212 and is screwed in the flange bolt hole 11, thereby realizing the fixation of the dismounting plate 21 and the pair of wheels 1 as a whole.

[0026] The top rod 22 is a threaded rod which is screwed into the middle threaded hole 211 from above and then gradually abuts against the wheel shaft 12 and is uniformly screwed, thereby providing static pressure to preliminarily loosen the pair of wheels 1.

[0027] The hammer structure 3 includes a working rod 31 fixed on the dismounting plate 21 and a hammer 32 slidingly mounted on the working rod 31. The working rod 31 is provided with two limiting pieces 33 which are spaced apart, and the hammer 32 slides between the two limiting pieces 33. The limiting pieces 33 mainly function to prevent the movement of the hammer 32 and generate impact force.

[0028] The hammer 32 is designed in the form of a dumbbell for bodybuilding, and the inner sides of the two hammer heads are designed in arc shape. The diameter of the middle rod is scientifically designed to not only ensure the comfort of holding the hammer rod but also ensure the convenience of exerting force. The top ends of the two ends of the hammer 32 are designed as flat surfaces, so that when the hammer 32 hits the top end of the working rod 31, the acting force can be maximally applied to the working rod 31.

[0029] Further, the working rod 31 is coaxial with the wheel shaft 12 of the pair of wheels 1, so that the impact force of the hammer 32 can be evenly distributed to each connecting bolt 23 to ensure the smooth pulling out of the connecting bolt 23.

[0030] In order to facilitate installation, the structure of the top rod 22 is further improved in the embodiment. The top rod 22 includes a tightening screw rod 221, a connecting screw rod 222 and a spacer 223 located between the tightening screw rod 221 and the connecting screw rod 222. The tightening screw rod 221 passes through the middle threaded hole 211 and the bottom thereof abuts against the wheel shaft 12. The connecting screw rod 222 is screwed with the hammer structure 3. The working rod 31 is made of round steel with appropriate diameter, and one end thereof is processed into an internal thread to facilitate the insertion and screwing of the connecting screw rod 222. Through this structure, the working rod 31 can be coaxial with the wheel shaft 12 of the pair of wheels 1.

[0031] Further, in order to increase the scope of disassembly plate 21, the mounting hole 212 is a waist-shaped hole, the long axis direction of the waist-shaped hole is along the radial direction of the wheel 1; the connecting bolt 23 can be adjusted in position and installed in the waist-shaped hole to adapt to different sizes and positions of the flange bolt hole 11.

[0032] The installation method of the device in this embodiment is as follows:

[0033] The connecting bolt 23 is sequentially inserted through the mounting hole 212 and tightened in the flange bolt hole 11, thereby realizing the fixation of the disassembly plate 21 and the wheel 1 as a whole. Then the jacking rod 22 is screwed from above the middle threaded hole 211, the jacking rod 22 gradually abuts against the wheel shaft 12, and continues to be uniformly tightened to provide a certain static pressure, so that the wheel 1 is preliminarily loosened. The operating rod 31 is tightened on the connecting screw rod 222 to realize the fixed installation of the hammer structure 3. By sliding the hammer 32 up and down, the hammer 32 hits the limiting piece 33 close to the disassembly plate 21 side to realize the application of an axial impact force, which assists the wheel 1 to break through the rust or interference resistance.

[0034] The device combines static pressure (jacking rod 22) and impact force (hammer 32) and is suitable for disassembly of wheels with high rust or interference fit. The working principle and mechanical analysis of the device are as follows:

[0035] 1) Static pre-tightening stage (before impact). Initial pressure: before impact, the jacking rod 22 is tightened manually or by a tool to generate a static pre-tightening force (Fpre-tightening). At this time, the length of the jacking rod 22 does not change, and the pressure is determined by the screw tightening torque. The calculation formula is as follows:

[0036]

[0037] T: tightening torque, k: friction coefficient, d: nominal diameter of thread.

[0038] Effect: the pre-tightening force generates an initial separation tendency between the wheel 1 and the wheel shaft 12, but it is usually not enough to directly disassemble the rust / interference fit wheel.

[0039] 2) Dynamic impact stage (at the moment of impact). Pressure change mechanism: when the hammer 32 impacts the disassembly plate 21 downward, the impact force (Fimpact) is transmitted to the jacking rod 22 through the disassembly plate 21, causing a transient fluctuation of the internal stress of the jacking rod 22. Pressure peak: at the moment of impact, the pressure of the jacking rod 22 may reach 2-5 times the pre-tightening force (depending on the impact speed and system stiffness). Therefore, the pressure of the jacking rod 22 changes dynamically, the pressure significantly increases at the moment of impact, and then falls. The jacking rod 22 transmits this impact force to the wheel shaft 12, and the wheel shaft 12 exerts a counteracting force on the jacking rod 22, forcing the jacking rod 22 to drive the wheel 1 away from the wheel shaft 12, thereby assisting the wheel 1 to break through the rust or interference resistance.

[0040] Of course, once the wheel 1 loosens, the top rod 22 cannot be matched with the axle 12 again, and it is well known that the rear disassembly is easier once the wheel 1 loosens, so the device combines the static pressure (the top rod 22) and the impact force (the hammer 32), and is suitable for the disassembly of the wheel 1 with high corrosion or interference fit.

[0041] When the wheel 1 loosens, the hammer 32 hits the limiting sheet 33 above the operating rod 31 to realize the upward movement of the disassembly plate 21, and drives the wheel 1 to completely separate from the axle 12.

[0042] Of course, the above description is not a limitation of the utility model, and the utility model is not limited to the above examples, and the changes, modifications, additions or replacements made by the technical personnel in the technical field within the essential range of the utility model should also belong to the protection range of the utility model.

Claims

1. A disassembly device for embedded accessories in mining equipment, used to detach small embedded flange rollers from their axles; the rollers are provided with flange bolt holes in the circumferential direction; characterized in that: It includes a mounting bracket that can be detachably connected to the wheels and a hammer structure fixed above the mounting bracket; The fixing frame includes a disassembly plate, connecting bolts connecting the disassembly plate to the flange bolt holes, and a top rod fixed to the disassembly plate and initially pressed against the wheel axle of the coupled wheel; the connecting bolts fix the disassembly plate and the coupled wheel into a whole; The hammer structure includes a working rod fixed to the disassembly plate and a hammer slidably mounted on the working rod; two limiting plates are spaced apart on the working rod, and the hammer slides between the two limiting plates.

2. The embedded accessory disassembly device for mining equipment according to claim 1, characterized in that: The disassembly plate is provided with mounting holes that match the flange bolt holes and intermediate threaded holes that match the wheel axle; the mounting holes are used to install the connecting bolts, and the bottom of the connecting bolts is tightened into the flange bolt holes; the intermediate threaded holes are used to install the top rod.

3. The embedded accessory disassembly device for mining equipment according to claim 2, characterized in that: The connecting bolts are provided in multiple quantities, and the multiple connecting bolts are evenly distributed around the top rod.

4. The embedded accessory disassembly device for mining equipment according to claim 2, characterized in that: The push rod is a threaded rod that is screwed in from above the central threaded hole and then gradually pressed against the axle.

5. The embedded accessory disassembly device for mining equipment according to claim 1, characterized in that: The hammer is shaped like a dumbbell held in the hand, with the inner sides of the two hammer heads designed to be arc-shaped and the tops of the hammer heads at both ends designed to be flat.

6. The embedded accessory disassembly device for mining equipment according to claim 1, characterized in that: The working rod is coaxial with the axle of the paired wheel.

7. The embedded accessory disassembly device for mining equipment according to claim 6, characterized in that: The top rod includes a tightening screw, a connecting screw, and a partition block located between the tightening screw and the connecting screw; The tightening screw is fitted into the central threaded hole and its bottom abuts against the outside of the wheel axle; when the tightening screw abuts against the wheel axle, the spacer abuts against the disassembly plate; the connecting screw is screwed to the bottom of the working rod.

8. The embedded accessory disassembly device for mining equipment according to claim 2, characterized in that: The mounting hole is a waist-shaped hole, and the long axis of the waist-shaped hole is along the radial direction of the pair of wheels; the connecting bolt is installed in the waist-shaped hole in an adjustable position.

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