Coupling dismounting device

Abstract

The coupler dismounting device comprises a support assembly, the support assembly comprises a bottom plate, tie bars and a reinforcing plate, the tie bars are arranged on the rear side of the bottom plate, the other ends of the tie bars are connected with the reinforcing plate, mounting holes are symmetrically formed in the left side and the right side of the bottom plate, adjusting rods are arranged in the mounting holes in the left side and the right side in a penetrating mode, and limiting plates are arranged at the ends, close to the bottom plate, of the adjusting rods. A connecting rod is arranged at the other end of the adjusting rod, the other end of the connecting rod is connected with a pulling plate assembly, the pulling plate assembly comprises an L-shaped pulling plate I and an L-shaped pulling plate II, kidney-shaped holes are formed in the lap joint positions of the L-shaped pulling plate I and the L-shaped pulling plate II, and a concave groove is formed between the vertical protruding part of the L-shaped pulling plate I and the vertical protruding part of the L-shaped pulling plate II and used for being arranged on the coupler in a clamped mode. Couplers of different sizes are adapted by adjusting the positions of the screws and the distance between the pulling plates, and the bearing capacity is enhanced by matching with the stiffening plates. The device is compact in structure, convenient to operate and reusable, the maintenance cost is remarkably reduced, and the efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of mechanical maintenance and assembly technology, specifically to a coupling disassembly device. Background Technology

[0002] Couplings, as core components of mechanical transmission systems, are widely used to connect drive shafts and driven shafts to transmit torque and motion. Their installation and disassembly are key procedures in mechanical maintenance, especially in heavy industries such as metallurgy, mining, and power, where frequent maintenance of couplings places higher demands on operational efficiency and equipment reliability.

[0003] Traditional press-fitting technology commonly employs the following two methods:

[0004] 1. Custom-made welding jig: A temporary jig is welded on-site according to the outer diameter and center hole distance of the coupling, and pressure is applied using a jack. This method has significant drawbacks:

[0005] Poor adaptability: Couplings of different sizes require separate jigs to be made, resulting in extremely low reuse rate and waste of steel;

[0006] High cost: Frequent searching for suitable materials (such as steel plates, nuts, etc.) and time-consuming manual welding increase the cost per instance by about 30%-50%;

[0007] Insufficient structural strength: Temporary welded jigs are prone to weld cracking or steel plate deformation due to uneven load-bearing capacity, posing a safety hazard.

[0008] 2. General-purpose mechanical fixtures: Some companies use adjustable fixtures, but their limitations are obvious:

[0009] Limited adjustment range: It can only adapt to small-range dimensional changes and cannot cover large-span couplings;

[0010] Complex operation: It requires multiple disassembly and reassembly of nuts to adjust the clamping position, increasing the time for a single operation by more than 40%;

[0011] Insufficient load-bearing capacity: Threaded connections are prone to loosening and failure under high-pressure conditions, leading to a decrease in press-fitting accuracy.

[0012] According to industry research, a certain metallurgical company needs to overhaul 120 sets of couplings annually. The fabrication of temporary jigs extends the maintenance time by 2-3 hours per operation, resulting in a cumulative loss of over 240 man-hours annually and direct economic losses of approximately 150,000 yuan. Furthermore, the rework rate due to insufficient jig strength is as high as 12%, severely hindering production progress.

[0013] In summary, existing technologies generally suffer from drawbacks such as low versatility, high cost, poor efficiency, and insufficient load-bearing capacity. There is an urgent need for a press-fitting device that combines high adaptability, modular design, and high load-bearing strength to solve the core challenges in coupling maintenance. Utility Model Content

[0014] The purpose of this utility model is to solve the technical problems existing in the background art mentioned above, and to provide a jack pressing device with reasonable structural design, convenient operation, high installation efficiency, large load-bearing capacity, and reusable according to different coupling outer diameters and center hole distances, thereby improving work efficiency and reducing costs.

[0015] To solve the above problems, the present invention adopts the following technical solution:

[0016] A coupling disassembly device includes a support assembly. The support assembly includes a base plate, tie rods, and a reinforcing plate. Multiple tie rods are provided on the rear side of the base plate, and the other end of each tie rod is connected to a reinforcing plate. The base plate has symmetrical mounting holes on its left and right sides. An adjusting rod passes through each mounting hole on both sides. A limiting plate is provided at one end of each adjusting rod near the base plate, and a connecting rod is provided at the other end of each adjusting rod. A pull plate assembly is connected at the other end of the connecting rod. The pull plate assembly includes an L-shaped pull plate I and an L-shaped pull plate II. The connecting rod on one side connects to... An L-shaped pull plate I is attached to one side, and an L-shaped pull plate II is attached to the other side via a connecting rod. The lateral protrusions of the L-shaped pull plate I and L-shaped pull plate II overlap. Both L-shaped pull plates I and L-shaped pull plate II have waist holes at their overlap points. The waist holes on the L-shaped pull plate I and L-shaped pull plate II are matched. The waist holes at their overlap points are fixed by fasteners. A concave groove is formed between the vertical protrusions of the L-shaped pull plate I and L-shaped pull plate II for mounting on the coupling.

[0017] Furthermore, the lateral protrusion of the L-shaped pull plate II is provided with an adjustment groove for horizontally adjusting the position of the L-shaped pull plate I, and the lateral protrusion of the L-shaped pull plate I is inserted into the adjustment groove; by setting the adjustment groove, the pull plate assembly is more securely connected.

[0018] Furthermore, the mounting hole is an elongated hole that extends along the length of the base plate, and the adjusting rod can move left and right within the mounting hole. The ability of the adjusting rod to move within the mounting hole makes the width easier to adjust. Combined with the sliding adjustment of the elongated holes of L-shaped pull plate I and L-shaped pull plate II, it can accommodate couplings with different outer diameters.

[0019] Furthermore, a reinforcing plate is connected to the pull plate II, and the reinforcing plate is provided with a waist hole, which is adapted to the waist hole of the L-shaped pull plate II; by setting the reinforcing plate, the stability of the pull plate assembly is further improved.

[0020] Furthermore, each of the connecting rods is connected to a screw at the end away from the adjusting rod. The vertical protrusion of the L-shaped pull plate I has a through hole, and the vertical protrusion of the L-shaped pull plate II has a through hole. The threaded part of one side of the connecting rod passes through the through hole of the L-shaped pull plate I, and the threaded part of the other side of the connecting rod passes through the through hole of the L-shaped pull plate II. The connecting rods are fixed to the L-shaped pull plate I and the L-shaped pull plate II by nuts.

[0021] Furthermore, a trapezoidal threaded rod is connected to one end of the connecting rod near the adjusting rod, and a threaded hole is provided at one end of the adjusting rod near the connecting rod. The threaded hole is compatible with the trapezoidal thread. The two-stage connection design of the trapezoidal thread and the ordinary thread forms a combined structure of adjusting rod-connecting rod-pull plate, which effectively disperses stress and reduces the thread loosening rate under high pressure conditions.

[0022] Furthermore, the base plate has a blind hole on the side away from the reinforcing plate, which is located between the two mounting holes and is used to fix the jack base.

[0023] Furthermore, the tie rod is provided with lifting lugs.

[0024] Compared with the prior art, the beneficial effects of this utility model are:

[0025] 1. Multi-specification compatibility reduces overall costs:

[0026] Wide adjustment range: By adjusting the installation position of the adjusting rod in the mounting hole, and with the sliding adjustment of the long holes of L-shaped pull plate I and L-shaped pull plate II, it can be adapted to couplings with different outer diameters, covering more than 90% of industrial scenario needs;

[0027] Saves on repetitive investment: Replacing the traditional "one device, one mold" model, a single set of equipment can be reused for couplings of different sizes.

[0028] 2. Modular design improves work efficiency:

[0029] Simplified operation process: The reinforcing plate and the pull plate assembly are aligned through the elongated hole and locked with one click, avoiding repeated measurement and positioning;

[0030] 3. High load-bearing structure ensures operational safety:

[0031] Deformation-resistant design: The tie rods and reinforcing plates form a box beam structure, which, together with the double-layer reinforcement of the reinforcing plates, increases the overall bending strength to 2.3 times that of traditional welding jigs (the measured ultimate bearing capacity reaches 120 tons).

[0032] Stability optimization: The two-stage connection design of trapezoidal thread and ordinary thread forms a combination structure of adjustment rod-connecting rod-pull plate, which effectively disperses stress and reduces the thread loosening rate to below 0.5% under high pressure conditions, avoiding the risk of sudden failure.

[0033] 4. Low maintenance costs:

[0034] Key components such as connecting rods and reinforcing plates are made of standardized machined parts, which can be directly replaced when damaged, extending the maintenance cycle to 5 years and reducing the maintenance frequency by 70% compared to traditional jigs. Attached Figure Description

[0035] Figure 1 This is a schematic diagram of the structure of this utility model.

[0036] Figure 2 This is a schematic diagram of the support assembly in this utility model.

[0037] Figure 3 This is a schematic diagram of the connection structure between pull plate I and pull plate II in this utility model.

[0038] Figure 4 This is a schematic diagram of the reinforcing plate in this utility model.

[0039] Figure 5 This is a schematic diagram of the connecting rod in this utility model.

[0040] Figure 6 This is a schematic diagram of the adjusting rod in this utility model.

[0041] Figure 7 This is a diagram showing the usage state of this utility model.

[0042] In the diagram, 1-support assembly, 101-base plate, 102-ties, 103-reinforcing plate, 104-lifting lug, 105-elongated hole, 106-blind hole, 2-adjusting rod, 201-limiting plate, 202-screw hole, 3-connecting rod, 301-screw, 302-trapezoidal threaded rod, 4-L-shaped tie plate I, 5-L-shaped tie plate II, 501-adjusting groove, 6-through hole, 7-waist hole, 8-reinforcing plate, 901-nut, 902-bolt, 10-concave groove, 11-jack, 12-coupling, 13-shaft. Detailed Implementation

[0043] The technical solution of this utility model will be further described below with reference to the accompanying drawings.

[0044] like Figure 1-7As shown, a coupling disassembly device includes a support assembly 1, which includes a base plate 101, tie rods 102, and a reinforcing plate 103. Multiple tie rods 102 are provided on the rear side of the base plate 101 to form a longitudinally reinforced structure. Lifting lugs 104 are provided on the tie rods 102 for easy lifting and transportation. The other end of the tie rods 102 is connected to the reinforcing plate 103. The tie rods 102 and the reinforcing plate 103 form a box-beam structure, which, combined with the double-layer reinforcement of the reinforcing plate 8, improves the overall bending strength. The base plate 101 has symmetrically arranged mounting holes on its left and right sides. A blind hole 106 is provided on the side of the base plate 101 away from the reinforcing plate 103, located between two mounting holes, for fixing the base of the jack 11. The mounting hole is a rectangular elongated hole 105 extending along the length of the base plate 101 for the lateral movement of the adjusting rod 2.

[0045] Insert the two adjusting rods 2 into the mounting holes on the left and right sides of the base plate 101 respectively. Weld a limiting plate 201 to the end of the adjusting rod 2 near the base plate 101. The width of the limiting plate 201 is greater than the width of the elongated hole 105 to prevent the adjusting rod 2 from coming out. Screw the trapezoidal threaded rod 302 of the connecting rod 3 into the threaded hole 202 of the adjusting rod 2. Tighten it with a wrench to ensure that the threads are tightly engaged. Weld a screw 301 to the other end of the connecting rod 3 for connecting the L-shaped pull plate I 4 and the L-shaped pull plate II 5. The screw 301 can be of different models such as M42mm, M36mm, and M30mm. Different models of screw 301 can be replaced under different working conditions. When the horizontal width of the coupling 12 is too wide, it is blocked by the screw 301. A thinner screw 301 can be replaced.

[0046] The pull plate assembly includes an L-shaped pull plate I4 and an L-shaped pull plate II5. One side connecting rod 3 is connected to the L-shaped pull plate I4, and the other side connecting rod 3 is connected to the L-shaped pull plate II5. The lateral protrusion of the L-shaped pull plate II5 is provided with an adjustment groove 501. The lateral protrusion of the L-shaped pull plate I4 is inserted into the adjustment groove 501. Both the lateral protrusions of the L-shaped pull plate I4 and the L-shaped pull plate II5 are provided with waist holes 7. The waist holes 7 on the L-shaped pull plate I4 are adapted to the waist holes 7 on the L-shaped pull plate II5. The L-shaped pull plate I4 is inserted into the adjustment groove 501 of the L-shaped pull plate II5, so that the L-shaped pull plate I4 can slide horizontally within the adjustment groove 501.

[0047] The screws 301 of the two connecting rods 3 are passed through the through holes 6 of the vertical protrusions of the L-shaped pull plate I 4 and L-shaped pull plate II 5 respectively, and the L-shaped pull plate I 4 and L-shaped pull plate II 5 are fixed to the connecting rods 3 with nuts 901. A concave groove 10 is formed between the vertical protrusions of L-shaped pull plate I 4 and L-shaped pull plate II 5, which is used to lock onto the coupling 12. Then, the concave groove 10 at the lower end of the pull plate assembly is locked onto the coupling 13, so that the pull plate assembly is in close contact with the rear end face of the coupling 12 on the side near the bottom plate 101. Then, the combination structure of the screws 301 and connecting rods 3 is adjusted, which at the same time drives the L-shaped pull plate I 4 to move in the adjustment groove 501, so that the width of the concave groove 10 is equal to the diameter of the coupling 12.

[0048] The front and rear sides of the transverse protrusion of the pull plate II are connected with reinforcing plates 8. The reinforcing plates 8 are provided with waist holes 7. The waist holes 7 on the reinforcing plates 8 are adapted to the waist holes 7 of the L-shaped pull plate II 5. Align the reinforcing plates 8 with the waist holes 7 of the L-shaped pull plate II 5, insert bolts 902 and tighten nuts 901 to form a double-layer reinforced structure.

[0049] The usage process of this utility model is as follows: Place the support assembly 1 in front of the shaft 13 where the coupling 12 is located, and adjust the position of the base plate 101 so that the blind hole 106 is aligned with the installation position of the jack 11. Insert the coupling 12 into the concave groove 10 formed between the vertical protrusions of the L-shaped pull plate I4 and L-shaped pull plate II5, ensuring that the rear end face of the coupling 12 is in close contact with the end faces of the L-shaped pull plate I4 and L-shaped pull plate II5 near the base plate 101. Then, move the rod laterally in the position of the elongated hole 105, slide the L-shaped pull plate I4 in the position of the adjusting groove 501, so that the concave groove 10 is completely fitted with the outer circle of the coupling 12, and finally tighten the bolt 902 at the waist hole 7. Insert the base of the jack 11 into the blind hole 106, adjust the jack 11 top shaft 13 to coincide with the center line of the coupling 12, and then start the jack 11 and slowly increase the pressure until the coupling 12 is removed from the shaft 13. After disassembly, jack 11 is placed down, nut 901 and bolt 902 are loosened, coupling 12 is separated from the pull plate assembly, and adjusting rod 2 is reset to the initial position. The device can be reused for disassembly of the next set of couplings 12.

[0050] This device can replace traditional custom welding jigs, making coupling press-fitting operations more universal and efficient. It is suitable for heavy industries such as metallurgy and mining, saving an average of 150,000 yuan in maintenance costs per year and reducing the rework rate to below 3%.

Claims

1. A coupling dismounting device, characterized in that The utility model provides a support assembly (1) including bottom plate (101), the rib (102) and reinforcing plate (103), bottom plate (101) rear side is equipped with a plurality of rib (102), the other end of rib (102) is connected with reinforcing plate (103), bottom plate (101) left and right sides symmetry is equipped with mounting hole, the left and right sides mounting hole all are equipped with adjusting lever (2) in, adjusting lever (2) is close to bottom plate (101) one end and is equipped with limit board (201), adjusting lever (2) other end is equipped with connecting rod (3), connecting rod (3) other end is connected with pull plate assembly, pull plate assembly includes L shape pull plate I (4) with L shape pull plate II (5), one side connecting rod (3) is connected with L shape pull plate I (4), the other side connecting rod (3) is connected with L shape pull plate II (5), L shape pull plate I (4) transverse protruding portion and L shape pull plate II (5) transverse protruding portion are mutually overlapped, L shape pull plate I (4) and L shape pull plate II (5) mutually overlapped place are equipped with waist hole (7), L shape pull plate I (4) on waist hole (7) and L shape pull plate II (5) on waist hole (7) are matched, L shape pull plate I (4) and L shape pull plate II (5) mutually overlapped place waist hole (7) are fixed by fastener, L shape pull plate I (4) vertical protruding portion and L shape pull plate II (5) vertical protruding portion between form concave groove (10), for clamping in coupling (12).

2. A coupling dismounting device according to claim 1, characterized in that The L-shaped pull plate II (5) is provided with an adjusting groove (501) in the transverse protruding part, which is used for horizontally adjusting the position of the L-shaped pull plate I (4), and the transverse protruding part of the L-shaped pull plate I (4) is inserted into the adjusting groove (501).

3. A coupling dismounting device according to claim 2, characterized in that The mounting hole is a long hole (105), which extends along the length direction of the bottom plate (101), and the adjusting lever (2) can move left and right in the mounting hole.

4. A coupling dismounting device according to claim 3, characterized in that The reinforcing plate (8) is connected to the pull plate II, the reinforcing plate (8) is provided with a waist hole (7), and the waist hole (7) on the reinforcing plate (8) is matched with the waist hole (7) of the L-shaped pull plate II (5).

5. A coupling dismounting device according to claim 4, characterized in that The connecting rod (3) is connected with a screw rod (301) at the end away from the adjusting lever (2), the vertical protruding part of the L-shaped pull plate I (4) is provided with a through hole (6), the vertical protruding part of the L-shaped pull plate II (5) is provided with a through hole (6), the threaded part of the one side connecting rod (3) is inserted into the through hole (6) of the L-shaped pull plate I (4), the threaded part of the other side connecting rod (3) is inserted into the through hole (6) of the L-shaped pull plate II (5), and the connecting rod (3), the L-shaped pull plate I (4) and the L-shaped pull plate II (5) are fixed by a nut (901).

6. A coupling dismounting device according to claim 5, characterized in that The connecting rod (3) is connected with a trapezoidal threaded rod (302) at the end close to the adjusting lever (2), and the adjusting lever (2) is provided with a screw hole (202) at the end close to the connecting rod (3), the screw hole (202) is matched with the trapezoidal thread.

7. A coupling dismounting device according to claim 6, characterized in that The bottom plate (101) is provided with a blind hole (106) on the side away from the reinforcing plate (103), the blind hole (106) is arranged between the two mounting holes and is used for fixing the bottom seat of the jack (11).

8. A coupling dismounting device according to claim 6, characterized in that The pull bar (102) is provided with an ear (104).

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