CN204310678U - A kind of mud pump cross head pin attaching/detaching apparatus - Google Patents

Abstract

The utility model relates to a kind of mud pump cross head pin attaching/detaching apparatus, it comprises hand handle, with hand the suspension rod be connected, be arranged on the hanger of suspension rod end, be arranged on the suspender belt on hanger, be arranged on the reaction plate of suspension rod tail end, described suspension rod is arranged on the center position of reaction plate, cross head pin attaching/detaching apparatus is connected with cross head pin by binding bolt, technique effect of the present utility model is that lifting is succinct, dismounting is quick, laborsaving, the comparatively safe generation avoiding its landing situation of disassembly process, the comparatively safe generation greatly reducing personal accident accident of disassembly process.

Description

A mud pump crosshead pin disassembly device

technical field

The utility model relates to a crosshead pin disassembly device, in particular to a mud pump crosshead pin disassembly device.

Background technique

The crosshead pin of the mud pump is an important force-bearing part connecting the crankshaft connecting rod and the crosshead of the mud pump. Its appearance is similar to the shape of a round truncated long cylinder and weighs about 50 kilograms. The conventional F-type three-cylinder mud pump is equipped with three crosshead pins, and after the mud pump has been working for a period of time, the crosshead pins need to be removed frequently when the connecting rod, crosshead pin, crosshead or mud pump guide plate needs to be replaced, so A special disassembly and assembly tool is required, which is very necessary for efficient and safe disassembly and assembly of crosshead pins and improving the efficiency of mud pump assembly operations.

The difficulties in the disassembly and assembly of the crosshead pin are as follows:

Lifting affects disassembly: the center of gravity of the crosshead pin is roughly in the middle of its waist, and the sling must be wrapped around the middle of its waist when lifting, while the crosshead pin must be inserted into the crosshead during assembly. The tensioned sling located in the middle of its waist and The crosshead interfered, just blocking the threading pin. At this time, it is necessary to use another sling to hang the head of the crosshead pin, then loosen the sling located in the middle, and then push it in slowly by manpower. Also when removing the crosshead pin, hang its head with a sling first, then partially push it out, and then use another sling to hang its middle position to remove it. Its characteristics are that it takes a long time to disassemble and assemble, the process is complicated, and the overall work efficiency is low.

The lifting crosshead pin is easy to slip: because the head of the crosshead pin is heavy, the tail is light, and the "waist" is smooth, and in the process of putting on and off the pin, two slings must be used alternately, and the lifting height must be adjusted many times, so its It is very easy to fall off from a high place, causing personal accidental injury accidents, and there are potential safety hazards.

Difficulty in threading and taking off pins: During assembly, because of the protruding "steps" in the crosshead pin holes, the advancement of the crosshead pins will be hindered, so it is necessary to slightly hang at the middle of the waist and fine-tune the lifting height, and then slowly push the pins into the holes; During disassembly, due to the long-term deformation of the connection with the connecting rod and the cross head, there will be a slight "plastic bonding" situation, which cannot be pushed out with a small force, and the space of the mud pump casing is small, so it cannot be hammered or pulled. The pulling method is out of stock, which brings trouble to the disassembly work.

Contents of the invention

Aiming at the technical defects in the prior art that hoisting affects disassembly and assembly, hoisting crosshead pins are easy to slip and difficult to wear and unpin, the utility model provides a crosshead pin disassembly device for mud pumps.

In order to solve the defects in the prior art that hoisting affects the disassembly and assembly of the crosshead pin, the hoisting crosshead pin is easy to slip, and it is difficult to wear and lose the pin, the utility model provides a crosshead pin disassembly device for a mud pump, which includes a handle, The suspension rod connected with the handle, the suspension lug arranged at the end of the suspension rod, the suspension strap arranged on the suspension lug, the fixed plate arranged at the tail end of the suspension rod, and the suspension rod is arranged at the center of the fixed disk.

A preferred embodiment of the present utility model is that the crosshead pin dismounting device is connected with the crosshead pin through fastening bolts.

A preferred embodiment of the utility model is that the sling passes through the lifting lug, and the dismounting device is lifted by the sling.

A preferred embodiment of the utility model is that the handle is used to control the lifting angle of the crosshead pin.

The principle and steps of the disassembly and assembly of the crosshead pin provided by the utility model are:

The working principle and steps of assembling the crosshead pin are:

Step 1: Grease the inside of the crosshead pin hole, connect the fixed plate and the crosshead pin through fastening bolts, and connect the suspension rod and the crosshead pin with the sling, ready for lifting.

Step 2: Control the handle, slowly lift the crosshead pin to the same height as the pin hole through the sling and lifting lug of the boom, align the pin tail with the pin hole, push the handle slightly, and push the crosshead pin into the pin hole, If there is jamming between the pin tail and the pin hole, gently shake the handle, slightly adjust the angle of the crosshead pin, and push it while adjusting until the crosshead pin is fully pushed in; Tighten the bolts so that the fixed plate in the crosshead pin is separated from the mud pump. Then remove the crosshead pin removal device.

The working principle and steps of disassembling and assembling the crosshead pin are:

Connect the mud pump and the fixed plate on the crosshead pin by fastening bolts, and connect the suspension rod and the crosshead pin with the sling. When removing it, shake the handle to disengage the crosshead pin from the crosshead and the connecting rod; hang the crosshead To remove the head pin, slowly pull the handle to make it withdraw completely, and the out-of-stock is completed.

The technical effects of the utility model are: (1) simple lifting, fast disassembly and assembly, and labor-saving; (2) relatively safe disassembly process: because the crosshead pin and the hoisting frame are combined with bolts, the slipping situation is avoided The relatively safe disassembly and assembly process greatly reduces the occurrence of personal accidents; (3), simple structure, low manufacturing cost: common materials, simple manufacturing, avoiding complicated manufacturing processes and high manufacturing costs, and can It is better to quickly realize its disassembly function.

Description of drawings

Fig. 1 is a schematic structural diagram of the installation state of the crosshead pin of the mud pump of the present invention;

Fig. 2 is a schematic diagram of the structure of the utility model when the crosshead pin of the mud pump is removed.

1-handle; 2-hanging rod; 3-hanging lug; 4-sling; 5-fixing plate; 6-fastening bolt; 7-fastening bolt; 8-cross head pin;

Detailed ways

In order to illustrate the technical solution of the utility model more clearly, the utility model will be further described below in conjunction with the accompanying drawings.

Fig. 1 is a schematic diagram of the structure of the utility model in the installed state. Referring to Fig. 1, in the installed state, the mud pump pin hole 9 and the crosshead pin 8 are in a separated state, and the front end of the crosshead pin 8 is connected to the crosshead pin 8 by the fastening bolt 6. The fixed plate 5 of the crosshead pin dismounting device is connected, and the center position of the fixed plate 5 is connected with the tail end of the suspender 2. At the end of the suspender 2, a lifting lug 3 is provided, and a suspender 4 is arranged on the lifting lug 3. Through The sling 4 lifts the mud pump crosshead pin dismounting device and the crosshead pin 8, and a handle 1 is connected to the top of the boom 2, and the angle and direction of the crosshead pin dismounting device are calibrated through the handle 1, so that the control The crosshead pin 8 can be aligned with the mud pump pin hole 9.

The working principle and steps of assembling the connecting crosshead pin are as follows:

Step 1: Grease the inside of the crosshead pin hole, connect the fixed plate and the crosshead pin through fastening bolts, and connect the suspension rod and the crosshead pin with the sling, ready for lifting.

Step 2: Control the handle, slowly lift the crosshead pin to the same height as the pin hole through the sling and lifting lug of the boom, align the pin tail with the pin hole, push the handle slightly, and push the crosshead pin into the pin hole, If there is jamming between the pin tail and the pin hole, gently shake the handle, slightly adjust the angle of the crosshead pin, and push it while adjusting until the crosshead pin is fully pushed in; Tighten the bolts so that the fixed plate in the crosshead pin is separated from the mud pump. Then remove the crosshead pin removal device.

The working principle and steps of crosshead pin disassembly and assembly are as follows: the crosshead pin disassembly device includes handle 1, suspender 2 connected with the handle, lifting lug 3 set at the end of suspender 2, and sling set on the lifting lug 4. The fixed plate 5 arranged at the tail end of the boom, and the said boom 2 is arranged at the center of the fixed plate 5 . Suspender 2 forms an included angle of 90° with fixed disk 5 . The fixed plate 5 is connected with the crosshead pin dismounting device through the fastening bolt 6. The dismounting step is to connect the mud pump and the fixed plate 5 on the crosshead pin through the fastening bolt 6, and the sling connects the boom 2 and the crosshead pin 8. When dismantling, shake the handle 1 and slowly pull the handle 1 to slowly separate the crosshead pin 8 and the mud pump pin hole 9, and lift the crosshead pin 8 and the crosshead pin through the sling 4 and the lifting lug 3 to remove them. Check the angle and offset of the installation device so that it is completely withdrawn and the out-of-stock is completed.

The above-mentioned embodiment only expresses the implementation mode of the present utility model, and its description is comparatively detailed, as long as those skilled in the art check the embodiment of the present utility model, under the premise of not departing from the concept of the utility model, what is done Changes all belong to the protection scope of the present utility model. However, the embodiments described herein should not be construed as limiting the protection scope of the present utility model.

Claims (4)

1. A crosshead pin disassembly device for a mud pump, characterized in that the disassembly device includes a handle (1), a boom (2) connected to the handle (1), and a boom (2) The lifting lug (3) at the end, the sling (4) set on the lifting lug (3), the fixed plate (5) set at the tail end of the suspender (2), and the suspender (2) is set on the fixed plate (5) ) at the center position. 2. The crosshead pin dismounting device according to claim 1, characterized in that the crosshead pin dismounting device is connected to the crosshead pin (8) through fastening bolts (7). 3. The assembly and disassembly device for crosshead pins according to claim 1, characterized in that, the sling (4) passes through the lifting lug (3), and the assembly and disassembly device is lifted by the sling (4). 4. The crosshead pin dismounting device according to claim 1, characterized in that the handle (1) is used to control the lifting angle of the crosshead pin (8).