Tool for disassembling and assembling connecting rod in vertical compressor

Abstract

The utility model relates to a tool for disassembling and assembling a connecting rod in a vertical compressor. The tool comprises a clamping assembly, a disassembling and assembling assembly and a base plate. During disassembly and assembly, the clamping assembly and the head of the crosshead are oppositely clamped and fastened, the base plate is matched with the bottoms of the two sides of the lower portion of the crosshead, when the crosshead is disassembled and assembled, the clamping assembly and the head of the crosshead are oppositely clamped and fastened, the cable penetrates through the filling hole from the air cylinder and then is connected with the lifting ring nut, and therefore the whole crosshead is lifted. The cushion plate and the connecting plate of the cushion plate are arranged at the proper positions of the bottoms of the two sides of the lower portion of the crosshead to be assembled and connected into a whole, then the bottom faces of the two sides of the lower portion of the crosshead body including the connecting rod slowly descend to be located on the cushion plate of the cushion plate assembly so as to guarantee stability of the crosshead, and finally the crosshead pin is disassembled through the disassembling and assembling assembly. Therefore, the control gap and the center height of the crosshead can be guaranteed when the crosshead is disassembled and assembled, stability is kept, collision is prevented when the crosshead is disassembled and assembled, and working efficiency and safety of the crosshead are improved.

Description

Technical Field

[0001] The utility model discloses a tooling for disassembling and assembling connecting rods, belonging to the technical field of vertical compressors, and specifically relates to a tooling for disassembling and assembling connecting rods inside a vertical compressor. Background Art

[0002] The main function of the crosshead of a vertical compressor is to connect the piston and the connecting rod and play a guiding role. The crosshead transmits the rotational motion of the crankshaft to the piston through the connecting rod, converting it into a reciprocating linear motion in the slideway, thereby driving the piston to do work.

[0003] In a vertical compressor, the functions of the crosshead include:

[0004] Connecting function: The crosshead connects the piston and the connecting rod, and transmits the rotational motion of the crankshaft to the piston through the connecting rod to achieve the reciprocating motion of the piston.

[0005] Guiding function: The crosshead moves in the slideway, playing a guiding role to ensure the stable movement of the piston.

[0006] Direction control: During the operation of a piston-type vertical compressor, the crosshead is also involved in direction control, and the flow direction of the gas is adjusted through valves.

[0007] Self-lubricating function: The crosshead usually uses self-lubricating materials, which can reduce friction and wear and extend the service life.

[0008] In addition, special attention needs to be paid to the disassembly and installation of the crosshead. The reverse crosshead will continuously jump during movement, which has a serious impact on the service life of the piston rod. Therefore, a tooling for disassembling and assembling connecting rods is required to strictly control the clearance and center height during disassembly, assembly or maintenance. Summary of the Utility Model

[0009] Purpose of the utility model: To provide a tooling for disassembling and assembling connecting rods inside a vertical compressor to solve the above-mentioned problems.

[0010] Technical solution: A tooling for disassembling and assembling connecting rods inside a vertical compressor, the tooling for disassembling and assembling connecting rods is matched with the crosshead inside the vertical compressor. It is characterized in that the tooling for disassembling and assembling connecting rods includes: a clamping component, a disassembling and assembling component and a backing plate; during disassembly and assembly, the clamping component is clamped and fixed with the head of the crosshead, the disassembling and assembling component is matched with the crosshead pin to achieve disassembly and assembly, and the backing plate is matched with the bottom of the two sides under the crosshead.

[0011] In a further embodiment, the clamping component includes: a nut, a flat washer, a fully threaded stud, a flange and a lifting eye nut;

[0012] The flange is provided with two, one is installed inside the head of the crosshead, and the other is installed outside the head of the crosshead. The fully threaded stud is screwed to both flanges at the same time. There are two nuts, which are respectively screwed to the fully threaded stud to fix the positions of the two flanges on the head of the crosshead. The eye nut is screwed to the outer end of the fully threaded stud, and the flat washer is installed directly between the flange and the nut.

[0013] In a further embodiment, the two flanges are arranged symmetrically.

[0014] In a further embodiment, the disassembly and assembly component includes: a pressing cylinder body and a cover plate;

[0015] The cover plate is fixedly installed on one side of the pressing cylinder body, and the other side of the pressing cylinder body is matched with the crosshead pin.

[0016] In a further embodiment, the backing plate is composed of a sleeper plate and a connecting plate; there are two sleeper plates and two connecting plates. The two connecting plates are fixedly connected to the two ends of the two sleeper plates through bolts.

[0017] Beneficial effects: When disassembling and assembling the crosshead of the present utility model, the clamping component is used to clamp and fix the crosshead head. The cable passes through the stuffing box from the cylinder and then connects to the eye nut to lift the entire crosshead. The sleeper plate and the connecting plate of the backing plate are placed at appropriate positions on both sides of the bottom of the crosshead and then assembled and connected into one body. Then, the bottom surfaces of both sides of the lower part of the crosshead body, including the connecting rod, are slowly lowered and seated on the sleeper plate of the backing plate assembly to ensure the stability of the crosshead. Finally, the disassembly and assembly component is used to disassemble the crosshead pin. Therefore, the present utility model can ensure the control clearance and center height during the disassembly and assembly of the crosshead, while maintaining stability, thereby preventing bumps during disassembly and assembly, and improving work efficiency and the safety of the crosshead. Description of the Drawings

[0018] Figure 1 It is a schematic diagram of the disassembly and assembly tool for the connecting rod of the present utility model.

[0019] Figure 2 It is a schematic diagram of the disassembly and assembly component of the present utility model.

[0020] Figure 3 It is a schematic diagram of the backing plate of the present utility model.

[0021] Reference numerals: backing plate 1, disassembly and assembly component 2, nut 3, flat washer 4, fully threaded stud 5, flange 6, eye nut 7, pressing cylinder body 22, cover plate 21, sleeper plate 11, connecting plate 12, bolt 13. Detailed Embodiments

[0022] The technical solution of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some but not all of the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0023] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be construed as a limitation of the present utility model. In addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0024] In the description of the present utility model, it should be noted that unless otherwise clearly specified and limited, the terms "installation", "connection", "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations. In addition, the technical features involved in different embodiments of the present utility model described below can be combined with each other as long as they do not conflict with each other.

[0025] A tool for disassembling and assembling a connecting rod inside a vertical compressor, the disassembling and assembling connecting rod tool cooperates with the crosshead inside the vertical compressor, as Figure 1 shown, the disassembling and assembling connecting rod tool includes: a clamping assembly, a disassembling and assembling assembly 2 and a backing plate 1; during disassembly and assembly, the clamping assembly clamps and fixes with the head of the crosshead, the disassembling and assembling assembly 2 cooperates with the crosshead pin to achieve disassembly and assembly, and the backing plate 1 cooperates with the bottom on both sides under the crosshead.

[0026] In one embodiment, as Figure 1 shown, the clamping assembly includes: a nut 3, a flat washer 4, a full-thread stud 5, a flange 6 and a lifting eye nut 7;

[0027] The flange 6 is provided with two, one is installed inside the head of the crosshead, and the other is installed outside the head of the crosshead. The full-thread stud 5 is screwed to both flanges 6 at the same time. The nut 3 is provided with two, and is respectively screwed to the full-thread stud 5 to fix the positions of the two flanges 6 on the head of the crosshead. The lifting eye nut 7 is screwed to the outer end of the full-thread stud 5, and the flat washer 4 is installed directly between the flange 6 and the nut 3.

[0028] In one embodiment, as Figure 1 shown, the two flanges 6 are arranged symmetrically.

[0029] In one embodiment, as Figure 2 shown, the disassembly and assembly component 2 includes: a pressure cylinder body 22 and a cover plate 21;

[0030] The cover plate 21 is fixedly installed on one side of the pressure cylinder body 22, and the other side of the pressure cylinder body 22 is matched with the crosshead pin.

[0031] In one embodiment, as Figure 3 shown, the backing plate 1 is composed of a sleeper plate 11 and a connecting plate 12; there are two sleeper plates 11 and two connecting plates 12. The two connecting plates 12 are fixedly connected to both ends of the two sleeper plates 11 through bolts 13.

[0032] Working principle: As Figure 1 shown, this tooling mainly plays the role of hoisting and seating the crosshead and the disassembly and assembly of the crosshead pin, and solves the problem of removing the connecting rod body from the crankcase and replacing the small end bearing shell of the connecting rod outside the machine without removing the cylinder.

[0033] The disassembly and reinstallation work process is as follows:

[0034] 1. Before disassembly, preparations before operation should be made, including boarding the cable crane, etc., eliminating unsafe factors, and keeping the surrounding site clean.

[0035] 2. Open the cylinder head of the row where the connecting rod with the small end bearing shell to be replaced is located, and remove the entire piston assembly including the hydraulic nut and the locking round nut and move it outside the machine according to the disassembly steps of the hydraulic nut connecting the piston rod and the crosshead.

[0036] 3. Turn the crankshaft to move the connecting rod to a suitable position. According to the disassembly steps of the connecting rod big end cover, remove the connecting rod big end cover of the connecting rod with the small end bearing shell to be replaced through a hydraulic tensioner, including the connecting rod bolts and nuts, bearing shells, etc., and take them out of the crankcase. Then turn the crankshaft to move the crosshead and the connecting rod body to the top dead center.

[0037] 4. Remove the entire guide bearing seat in the isolation section of the crankcase from the seat hole, and place the guide bearing seat beside the maintenance window without affecting the lifting of the crosshead. Note that a rubber pad must be placed at the bottom.

[0038] 5. Use the relevant lifting components such as nut 3, flat washer 4, full-thread stud 5, flange 6 and lifting eye nut 7 in the clamping assembly of this tooling fixture to clamp and fasten the head of the crosshead according to the Figure 1 flange shown. Pass the cable through the stuffing box of the cylinder and then connect it to the lifting eye nut. Note that in order to prevent the cable from damaging the stuffing, cotton yarn or nylon strap should be used for lifting or hoisting.

[0039] 6. Lift the crosshead group and connecting rod body until the lower part of the crosshead body is completely separated from the upper plane of the slideway by about 100 mm and rotate it 90 degrees, that is, the crosshead pin hole faces the maintenance window of the crankcase forward. Then place the bolster plate 11 and connecting plate 12 in the clamping assembly 1 at appropriate positions on both sides of the bottom of the crosshead and assemble and connect them into one body. Then slowly lower the bottom surfaces on both sides of the lower part of the crosshead body including the connecting rod and seat them on the bolster plate 11 of the clamping assembly 1. The crosshead body seated on the bolster plate 11 should be kept stable. Loosen the strap and disassemble the relevant lifting components of the clamping assembly. Then pass the M16 lifting eye screw in the random tool through the strap and screw it into the lifting eye screw hole at the small end of the connecting rod, and lift the connecting rod body separately.

[0040] 7. Disassemble the crosshead pin. First, lift the connecting rod body, and note that the strap should be tied tightly. Remove the snap rings from the holes at both ends of the crosshead pin. Then use the crosshead pin disassembly and assembly tool in the disassembly and assembly assembly 2 to manually apply force and hammer from the non-key position to disassemble the crosshead pin and remove it outside the crankcase. Pay attention to the protection during the disassembly of the crosshead pin to avoid bumping and scratching and affecting the reinstallation accuracy of the pin.

[0041] 8. After the crosshead pin is disassembled, the connecting rod is separated from the crosshead body, and then slowly lower the connecting rod body to the bottom of the crankcase and manually remove it outside the machine from the maintenance window to replace the small end bearing shell of the connecting rod.

[0042] 9. After replacing the small end bearing shell, it should be reinstalled in the reverse order of the disassembly steps. When reinstalling, place the crosshead pin disassembly and assembly tool in the disassembly and assembly assembly 2 at the key position (i.e., Figure 1 the right side in

[0043] 10. The disassembly and assembly process is carried out inside the crankcase. If there are connecting parts or components that affect the disassembly and assembly, they are allowed to be temporarily removed and taken out.

[0044] Obviously, the above embodiments are only examples for clear illustration and not limitations on the implementation manners. For those of ordinary skill in the art, other different forms of changes or variations can be made based on the above description. It is not necessary and impossible to list all the implementation manners here. And the obvious changes or variations derived therefrom are still within the protection scope of this utility model.

Claims

1. A connecting rod disassembly tool for a vertical compressor, the connecting rod disassembly tool cooperates with a cross head in the vertical compressor, characterized in that: The connecting rod disassembly and assembly tooling includes: a clamping assembly, a disassembly and assembly assembly and a pad; during disassembly and assembly, the clamping assembly is clamped and tightened with the crosshead head, the disassembly and assembly assembly cooperates with the crosshead pin to achieve disassembly and assembly, and the pad cooperates with the bottom of the two sides under the crosshead.

2. According to claim 1, a tool for disassembling and assembling connecting rods in a vertical compressor, characterized in that: The clamping assembly comprises: a nut, a flat washer, a fully threaded stud, a flange and a lifting eye nut; The flanges are provided with two, and one is installed on the inner side of the crosshead head, and the other is installed on the outer side of the crosshead head. The fully threaded studs are screwed to the two flanges at the same time. The nuts are provided with two, and are screwed to the fully threaded studs respectively to fix the positions of the two flanges on the crosshead head. The lifting ring nut is screwed to the outer end of the fully threaded stud, and the flat washer is installed directly on the flange and the nut.

3. A tool for disassembling and assembling connecting rods in a vertical compressor according to claim 2, characterized in that: The two flanges are arranged in a symmetrical manner.

4. The tooling for disassembling and assembling connecting rods in a vertical compressor according to claim 1, characterized in that: The disassembly and assembly components include: a pressing cylinder body and a cover plate; The cover plate is fixedly mounted on one side of the pressure cylinder body, and the other side of the pressure cylinder body is matched with the cross pin.

5. The tooling for disassembling and assembling connecting rods in a vertical compressor according to claim 1, characterized in that: The pad is composed of a pillow plate and a connecting plate; the pillow plate and the connecting plate are each provided with two pieces, and the two connecting plates are fixedly connected to the two ends of the two pillow plates by bolts.

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