CN211841781U

CN211841781U - Bridge type puller

Info

Publication number: CN211841781U
Application number: CN201921991372.XU
Authority: CN
Inventors: 张京华
Original assignee: Shanghai Gaoqiao Sgpec Petrochemical Engineering & Construction Co ltd
Current assignee: Shanghai Gaoqiao Sgpec Petrochemical Engineering & Construction Co ltd
Priority date: 2019-11-18
Filing date: 2019-11-18
Publication date: 2020-11-03
Anticipated expiration: 2029-11-18

Abstract

The utility model discloses a bridge type drawing device, which comprises two drawing mechanisms and a bridge frame; the two drawing mechanisms are symmetrically arranged on two sides of the balance disc, first ends of the two drawing mechanisms are respectively connected with the two first bolt holes on the balance disc, and the balance disc is disassembled and assembled by pulling second ends of the two drawing mechanisms together; the both ends level of bridging frame sets up, and the centre upwards forms protruding structure, and both ends are connected with two drawing mechanism respectively. The utility model provides a tradition puller draw the inhomogeneous problem of in-process balance disc atress, adopt the bridging formula part to connect drawing mechanism, utilize the hammer impact operation, guaranteed to draw in-process balance disc atress even, realized the convenience of dismouting part, saved the loss of dismouting cost and spare part.

Description

Bridge type puller

Technical Field

The utility model relates to a part dismouting technical field, concretely relates to ware is drawn to bridge connection formula.

Background

The replacement of the balance disc during the maintenance of the multistage centrifugal pump is a common operation, and how to quickly and timely disassemble and assemble parts is a problem to be considered by maintenance personnel. The balance disc is provided with two bolt holes for dismounting, but because of the long-term operation of the centrifugal pump and the corrosion of media, the two bolt holes for dismounting are not enough for dismounting the balance disc with long operation period and corrosion, and the balance disc meets resistance during dismounting.

If the balance disc is disassembled and assembled by adopting a heating method, the complete disassembly and assembly of the balance disc cannot be guaranteed, the overhaul cost is increased, and meanwhile, oxygen and acetylene generated by heating can pollute the environment.

If adopt traditional puller to carry out the dismouting to the balance disc, the distance between puller and the balance disc is long-range, and the bolt atress of puller is inhomogeneous can take place bending deformation, causes puller skew scheduling problem.

As shown in fig. 1, the balance disc 1 is disposed between the balance drums 2, the gap between the balance discs is about 0.3mm, and the balance disc 1 is provided with two bolt holes 3, the conventional mounting/dismounting manner is that two groups of pullers are used for mounting/dismounting together, however, the two groups of pullers are not uniformly stressed, so that the balance discs 1 and the balance drums 2 are locked, and cannot be dismounted, or even parts are damaged.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a bridge type puller. Utilize this device to aim at solving the inhomogeneous problem of tradition puller drawing in-process balance disc atress, adopt the bridging formula part to connect drawing mechanism, utilize the ram impact operation, guarantee to draw in-process balance disc atress even, realize the convenience of dismouting part, save the loss of dismouting cost and spare part.

In order to achieve the purpose, the utility model provides a bridge type puller which is used for disassembling and assembling a balance disc, two bolt holes are arranged on the balance disc, and the bridge type puller comprises two pulling mechanisms and a bridge frame; the two drawing mechanisms are symmetrically arranged on two sides of the balance disc, first ends of the two drawing mechanisms are respectively connected with the two first bolt holes on the balance disc, and the balance disc is disassembled and assembled by pulling second ends of the two drawing mechanisms together; the bridging frame, both ends level sets up, and the centre upwards forms protruding structure, and both ends are connected with two drawing mechanism respectively.

Most preferably, each drawing mechanism further comprises a ram, a drawing rod and a stopper; the ram is a hollow columnar structure; the drawing rod penetrates through the hammer, and the first end of the drawing rod is connected with a first bolt hole in the balance disc through a first bolt; the stopper sets up the second end at the pull rod.

Most preferably, the first end of the pull rod is internally threaded and is connected to the first bolt via the internal thread.

Most preferably, the second end of the pull rod is externally threaded and is connected to the stopper by the external threads.

Most preferably, the hammer is provided with a plurality of second bolt holes in the axial direction on the outer wall thereof.

Most preferably, the first bolt has a plurality of types, and each type of first bolt can be connected with the first bolt hole on the balance disc with different types.

Most preferably, a plurality of third bolt holes are symmetrically formed in two ends of the bridging frame respectively; the third bolt hole is a kidney-shaped hole; the waist-shaped hole is matched with the second bolt hole through the second bolt.

Most preferably, the third bolt hole is connected with the second bolt hole through a second bolt, so that the drawing mechanism is connected with the bridging frame.

Most preferably, the bridge frame is provided in plurality, arranged in parallel between the two drawing mechanisms.

Most preferably, there are two bridge frames.

The application of the utility model discloses, can solve the tradition and draw the inhomogeneous problem of in-process balance disc atress, adopt the bridging formula part to connect drawing mechanism, utilize the hammer impact operation, guarantee that drawing in-process balance disc atress is even, realize the convenience of dismouting part, save the loss of dismouting cost and spare part.

Compared with the prior art, the utility model discloses following beneficial effect has:

1. the utility model provides a tradition puller draw the inhomogeneous problem of in-process balance disc atress, adopt the bridging formula part to connect drawing mechanism, guaranteed to draw in-process balance disc atress even.

2. The utility model discloses utilize the ram to strike the operation, realized the convenience of parts such as dismouting balance disk.

3. The utility model provides the high efficiency of equipment dismouting has also guaranteed that spare part can not harm, has reduced the cost of equipment repair.

Drawings

FIG. 1 is a schematic view of a conventional puller for disassembling and assembling a balance disc;

fig. 2 is a schematic structural diagram of a bridge puller according to the present invention;

fig. 3 is a top view of the bridge frame provided by the present invention;

fig. 4 is a left side view of the bridge provided by the present invention;

fig. 5 is a schematic structural diagram of a drawing mechanism provided by the present invention;

fig. 6 is a schematic diagram of the bridge puller according to the present invention.

Detailed Description

The present invention will be further described with reference to the following embodiments, which are only used for illustrating the present invention and are not intended to limit the scope of the present invention.

The utility model provides a bridging type drawing device, as shown in figure 1, a balance disc 1 is arranged between balance drums 2, and two first bolt holes 3 are arranged on the balance disc 1, as shown in figure 2, the bridging type drawing device comprises two drawing mechanisms 4 and a bridging frame 5; the two drawing mechanisms 4 are symmetrically arranged on two sides of the balance disc 1, first ends of the two drawing mechanisms 4 are respectively connected with the two first bolt holes 3 on the balance disc 1, and the balance disc 1 is disassembled and assembled by pulling second ends of the two drawing mechanisms 4 together; as shown in fig. 3 and 4, the bridge frame 5 has two ends horizontally disposed, a protruding structure is formed in the middle of the bridge frame, and the two ends are respectively connected with the two drawing mechanisms 4; the protruding structure of the bridge 5 cooperates with a detachable pump shaft on the balance disc 1 in order to span the pump shaft of the balance disc 1 and prevent collision.

As shown in fig. 5, each drawing mechanism 4 further includes a ram 6, a drawing rod 7, and a stopper 8; the ram 6 is in a hollow columnar structure, and a disassembling worker manually controls the ram 6 to reciprocate on the drawing rod 7, so that the ram 6 impacts the limiter 8 to generate backward impact force to easily complete the disassembling work; the drawing rod 7 penetrates through the hammer 6, and the first end of the drawing rod is connected with the first bolt hole 3 on the balance disc 1 through a first bolt 9; and the limiting stopper 8 is arranged at the second end of the drawing rod 7 and is used for adjusting and limiting the drawing position of the drawing rod.

The first end of the drawing rod 7 is provided with internal threads and is connected with a first bolt 9 through the internal threads; the first bolts have various types, and the first bolts with various types can be connected with the first bolt holes in the balance discs with different types; the second end of the drawing rod 7 is provided with an external thread and is connected with the limiter through the external thread; the pull position of the puller is limited by adjusting the position of the stopper 8 to the end stop position of the external thread on the second end of the pull rod 7.

The hammer 6 is provided with a plurality of second bolt holes 10 in the axial direction on the outer wall thereof.

A plurality of third bolt holes 11 are symmetrically formed in two ends of the bridging frame 5 respectively; the third bolt hole 11 is an adjustable waist-shaped hole which is matched with the second bolt hole 10 through a second bolt 12 and is suitable for balance discs 1 with different sizes and specifications; the third bolt hole 11 is connected to the second bolt hole 10 by a second bolt 12, and the pulling mechanism 4 is connected to the bridge frame 5.

A plurality of bridge frames 5 are arranged between the two drawing mechanisms 4 in parallel; in the preferred embodiment of the present invention, there are two bridge frames 5.

As shown in fig. 6, the bridge puller can ensure that the forces on the two sides of the balance disc 1 are uniform, and ensure that the balance disc 1 is smoothly installed/detached from the balance drum 2.

The utility model discloses a theory of operation:

the bridge type drawing device comprises two drawing mechanisms and a bridge frame; the two drawing mechanisms are symmetrically arranged on two sides of the balance disc, first ends of the two drawing mechanisms are respectively connected with the two first bolt holes on the balance disc, and the balance disc is disassembled and assembled by pulling second ends of the two drawing mechanisms together; the bridging frame, both ends level sets up, and the centre upwards forms protruding structure, and both ends are connected with two drawing mechanism respectively.

To sum up, the utility model relates to a ware is drawn to bridge connection has solved the tradition and has drawn the inhomogeneous problem of in-process balance disc atress of ware, adopts the bridge connection formula part to connect drawing mechanism, utilizes the hammer impact operation, has guaranteed to draw in-process balance disc atress even, has realized the convenience of dismouting part, has saved the loss of dismouting cost and spare part.

While the present invention has been described in detail with reference to the preferred embodiments thereof, it should be understood that the above description should not be taken as limiting the present invention. Numerous modifications and alterations to the present invention will become apparent to those skilled in the art upon reading the foregoing description. Accordingly, the scope of the invention should be limited only by the attached claims.

Claims

1. The utility model provides a ware is drawn to bridge connection for dismouting balance disc, and be provided with two bolt holes on the balance disc, its characterized in that, this ware is drawn to bridge connection includes:

the two drawing mechanisms are symmetrically arranged on two sides of the balance disc, first ends of the two drawing mechanisms are respectively connected with the two first bolt holes on the balance disc, and the balance disc is disassembled and assembled by pulling second ends of the two drawing mechanisms together;

the bridge frame, both ends level sets up, and the centre upwards forms protruding structure, and both ends respectively with two drawing mechanism are connected.

2. The bridge puller of claim 1, wherein each pulling mechanism further comprises: a ram, a hollow cylindrical structure;

the drawing rod penetrates through the hammer, and the first end of the drawing rod is connected with the first bolt hole in the balance disc through a first bolt;

and the limiter is arranged at the second end of the pulling rod.

3. The bridge puller of claim 2, wherein said pull rod is internally threaded at a first end and is connected to said first bolt through said internal threads.

4. The bridge puller of claim 3, wherein the second end of the pull rod is externally threaded and is connected to the stop by the external threads.

5. The bridge puller of claim 4, wherein the ram is provided with a plurality of second bolt holes in an axial direction on an outer wall thereof.

6. The bridge puller of claim 3, wherein said first bolt is of a plurality of types, each type of first bolt being connectable to a different type of said first bolt hole on a balance disk.

7. The bridge puller according to claim 5, wherein a plurality of third bolt holes are symmetrically formed at both ends of the bridge frame, respectively; the third bolt hole is a kidney-shaped hole; the kidney-shaped hole is matched with the second bolt hole through a second bolt.

8. The bridge puller of claim 7, wherein the third bolt hole is connected to the second bolt hole by a second bolt, connecting the pulling mechanism to the bridge frame.

9. The bridge puller of claim 8, wherein said bridge frame is plural and is disposed in parallel between said two pulling mechanisms.

10. The bridge puller of claim 9, wherein said bridge frame is two in number.