Pin dismounting device for pin coupling

Abstract

The pin dismounting device comprises a fixing frame, a positioning check block and an ejection mechanism, the positioning check block and the ejection mechanism are arranged on the two opposite sides of the fixing frame respectively, and the fixing frame comprises a positioning portion and an adjusting portion. The ejection mechanism comprises a shell and a telescopic assembly arranged in an inner cavity of the shell, the shell is fixedly connected to the positioning part, the end, close to the positioning check block, of the telescopic assembly can stretch out of the inner cavity of the shell, and an avoiding hole is formed in the side face, opposite to the ejection mechanism, of the positioning check block. And the top of the positioning stop block is detachably connected with the adjusting part.

Description

Technical Field

[0001] This utility model relates to the field of mechanical equipment maintenance technology, specifically to a pin disassembly device for pin couplings. Background Technology

[0002] Pin couplings, widely used flexible coupling devices in mechanical transmission systems, primarily consist of two flange halves connected by pin assemblies to transmit power. They are applied in belt conveyor systems, slurry pump units, vacuum pump systems, and other applications. Furthermore, pin couplings hold an important position in the field of small and medium power transmissions due to their excellent vibration reduction performance (reducing vibration transmission by 15-20%), overload protection, allowance of 5-8% radial misalignment compensation, and significant cost advantages.

[0003] During power transmission, the pin, as the core load-bearing component, mainly bears alternating shear stress and contact compressive stress. Under long-term operating conditions, the following failure conditions are prone to occur: 1) Plastic deformation after compression, such as diameter reduction of 0.5-1.2mm; 2) Severe surface wear, commonly seen in dusty environments; 3) Fatigue fracture, mostly occurring at stress concentration points.

[0004] The aforementioned failures not only lead to a decrease in the transmission accuracy of the coupling and a potential increase in radial runout by 2-3 times, but also often present difficulties in disassembly during replacement and maintenance. Traditional disassembly methods typically involve workers repeatedly striking the coupling with a hammer, resulting in low work efficiency, with each single pin taking approximately 15-30 minutes to disassemble. Furthermore, there are high safety risks, as workers risk injury during the striking process. Downtime losses are substantial, with typical industrial production line downtime costs reaching 5,000-10,000 yuan per hour. Utility Model Content

[0005] In view of the above-mentioned deficiencies of the prior art, the technical problem to be solved by this utility model is to provide a pin disassembly device for pin couplings, which can quickly disassemble the pins and reduce the labor intensity and safety risks of workers.

[0006] To achieve the above objectives, this utility model provides a pin removal device for a pin coupling, comprising a fixed frame, a positioning block, and an ejection mechanism. The positioning block and the ejection mechanism are respectively disposed on opposite sides of the fixed frame. The fixed frame includes a positioning part and an adjusting part. The ejection mechanism includes a housing and a telescopic component disposed in the inner cavity of the housing. The housing is fixedly connected to the positioning part. The end of the telescopic component near the positioning block can extend out of the inner cavity of the housing. The positioning block has a clearance hole on its side opposite to the ejection mechanism. The top of the positioning block is detachably connected to the adjusting part.

[0007] Furthermore, the adjustment section includes a plurality of spaced-apart adjustment through holes.

[0008] Furthermore, the top of the positioning block is bolted to the adjustment through hole of the adjustment part.

[0009] Furthermore, the telescopic component of the ejection mechanism includes a hydraulic cylinder.

[0010] Furthermore, the fixing frame is also provided with a handle structure.

[0011] As described above, the pin disassembly device for pin couplings according to this utility model has the following beneficial effects:

[0012] By setting a fixed frame and positioning blocks, the pin removal device can be fixed on the flange, and the pin can be removed from the flange by the ejection mechanism. This greatly improves the pin removal efficiency of the pin coupling, reduces downtime losses, lowers the cost of disassembly operations, and reduces the labor intensity and safety risks of manual hammering of the pin during pin removal. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of the column pin disassembly device of this utility model.

[0014] Figure 2 This is a front view of the column pin disassembly device of this utility model.

[0015] Figure 3 This is a side view of the column pin disassembly device of this utility model.

[0016] Explanation of icon numbers

[0017] 1. Fixing frame; 101. Positioning part; 102. Adjustment part; 103. Adjustment through hole; 2. Positioning block; 201. Clearance hole; 3. Ejection mechanism; 301. Outer shell; 302. Telescopic component; 4. Handle structure. Detailed Implementation

[0018] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings. These embodiments are only used to illustrate this utility model and are not intended to limit it.

[0019] In the description of this utility model, it should be noted that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this utility model. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0020] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0021] Furthermore, in the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0022] See Figures 1 to 3 This utility model provides a pin removal device for a pin coupling, including a fixed frame 1, a positioning block 2, and an ejection mechanism 3. The positioning block 2 and the ejection mechanism 3 are respectively arranged on opposite sides of the fixed frame 1. The fixed frame 1 includes a positioning part 101 and an adjusting part 102. Preferably, the positioning part 101 includes a positioning surface that contacts the flange on one side of the pin coupling, and the positioning block 2 contacts the flange on the other side of the pin coupling. The ejection mechanism 3 includes a housing 301 and a telescopic component 302 disposed in the inner cavity of the housing 301. The housing 301 is fixedly connected to the positioning part 101. The end of the telescopic component 302 near the positioning block 2 can extend out of the inner cavity of the housing 301. The positioning block 2 has a clearance hole 201 on the side opposite to the ejection mechanism 3. The top of the positioning block 2 is detachably connected to the adjusting part 102. Preferably, the length of the pin removal device is 400mm, the width is 130mm, the height is 260mm, and the weight is 16Kg.

[0023] The basic working principle of the pin disassembly device for pin couplings involved in this utility model is as follows: By setting a fixing frame 1 and a positioning block 2, and through the clearance hole 201, it is easy to observe the position of the two half flanges, the positioning part 101, and the positioning block 2, and make corresponding adjustments so that the positioning part 101 contacts the flange on one side of the pin coupling, and the positioning block 2 contacts the flange on the other side of the pin coupling, so that the flange of the pin coupling is fixed between the positioning block 2 and the positioning part 101. By setting an ejection mechanism 3, the telescopic component 302 extends out of the inner cavity of the outer shell 301 and contacts the pin located in the two half flanges. The telescopic component 302 gradually pushes the pin out of the two half flanges toward the positioning block 2, and through the clearance hole 201, until the pin is completely pushed out of the two half flanges.

[0024] See Figures 1 to 3 The present invention will be further described below with reference to a specific embodiment:

[0025] In this embodiment, see Figure 1 and Figure 2 As a preferred design, the adjusting part 102 includes a plurality of spaced adjusting through holes 103. Preferably, the adjusting through holes 103 are arranged in two rows, with the number of adjusting through holes 103 in the upper row being greater than the number of adjusting through holes 103 in the lower row. A lower row adjusting through hole 103 is provided below any two adjacent upper row adjusting through holes 103. Preferably, the top of the positioning block 2 is connected to different adjusting through holes 103 in the adjusting part 102, which can adjust the distance between the positioning block 2 and the positioning part 101. In this embodiment, the distance between the positioning block 2 and the positioning part 101 can be adjusted to 50mm, 70mm, 90mm, 110mm, 130mm and 150mm to meet the needs of different models and sizes of pin couplings and improve the applicability of the disassembly device.

[0026] In this embodiment, see Figure 1 , Figure 2 and Figure 3 As a preferred design, the top of the positioning block 2 is bolted to the adjustment through hole 103 of the adjustment part 102, which has the advantages of low cost, easy disassembly, and high flexibility. Preferably, the top of the positioning block 2 is connected to the adjustment through hole 103 by three bolts arranged in a triangle. Specifically, two bolts are set at the upper row of adjustment through holes 103 and one bolt is set at the lower row of adjustment through holes 103, which can increase the axial force of the positioning block 2 and improve the stability of the connection.

[0027] In this embodiment, see Figure 1 and Figure 2As a preferred design, the telescopic component 302 of the ejection mechanism 3 includes a hydraulic cylinder. Preferably, the ejection mechanism 3 also includes an electro-hydraulic component connected to the hydraulic cylinder. The electro-hydraulic component can remotely control the operation of the hydraulic cylinder or manually control the operation of the hydraulic cylinder. Preferably, the diameter of the hydraulic cylinder's jacking shaft is set to 30mm, the stroke of the jacking shaft is set to 90mm, and the ejection force of the jacking shaft is set to 3t, which can meet the requirements for removing severely deformed and jammed pins.

[0028] In this embodiment, see Figure 1 , Figure 2 and Figure 3 As a preferred design, the fixed frame 1 is also equipped with a handle structure 4, which makes it easy for staff to lift and carry.

[0029] In this embodiment, using traditional methods for dismantling operations requires 6 people working for 15 hours. With the pin-removing device of this application, it requires 2 people working for 7.5 hours. The average number of dismantling operations per year is 36. Based on a labor cost of 447 yuan / man-day, the annual labor cost savings are: 6 × 15 - 2 × 7.5 / 8 × 447 × 4 = 150,900 yuan. After the pin-removing device of this application is put into use, the downtime of a single piece of equipment can be shortened by 1.5 hours, personnel input can be reduced by 67%, and work efficiency can be increased by 50%.

[0030] As can be seen from the above, the pin disassembly device for pin couplings of this utility model has the following beneficial effects:

[0031] By setting up the fixing bracket 1 and the positioning block 2, the pin removal device can be fixed on the flange. The pin can be removed from the flange by the ejection mechanism 3, thereby greatly improving the pin removal efficiency of the pin coupling, reducing downtime losses, lowering the cost of disassembly operations, and reducing the labor intensity and safety risks of manual hammering of the pin during pin removal.

[0032] In summary, this utility model effectively overcomes the various shortcomings of the prior art and has high industrial application value.

[0033] The above embodiments are merely illustrative of the principles and effects of this utility model and are not intended to limit the scope of this utility model. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of this utility model. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in this utility model should still be covered by the claims of this utility model.

Claims

1. A pin disassembly device for a pin coupling, characterized in that: The device includes a fixed frame (1), a positioning block (2), and an ejection mechanism (3). The positioning block (2) and the ejection mechanism (3) are respectively disposed on opposite sides of the fixed frame (1). The fixed frame (1) includes a positioning part (101) and an adjustment part (102). The ejection mechanism (3) includes a housing (301) and a telescopic component (302) disposed in the inner cavity of the housing (301). The housing (301) is fixedly connected to the positioning part (101). The end of the telescopic component (302) near the positioning block (2) can extend out of the inner cavity of the housing (301). The side of the positioning block (2) opposite to the ejection mechanism (3) is provided with a clearance hole (201). The top of the positioning block (2) is detachably connected to the adjustment part (102).

2. The pin disassembly device for a pin coupling according to claim 1, characterized in that: The adjustment section (102) includes a plurality of adjustment through holes (103) spaced apart.

3. The pin disassembly device for a pin coupling according to claim 2, characterized in that: The top of the positioning block (2) is bolted to the adjustment through hole (103) of the adjustment part (102).

4. The pin disassembly device for a pin coupling according to claim 1, characterized in that: The telescopic assembly (302) of the ejection mechanism (3) includes a hydraulic cylinder.

5. The pin disassembly device for a pin coupling according to claim 1, characterized in that: The fixing frame (1) is also provided with a handle structure (4).

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