CN2320839Y

CN2320839Y - Vertical distance-limiting hydraulic coupler for swing mechanism of tower crane

Info

Publication number: CN2320839Y
Application number: CN 97219341
Authority: CN
Inventors: 刘应诚
Original assignee: Individual
Current assignee: Individual
Priority date: 1997-06-26
Filing date: 1997-06-26
Publication date: 1999-05-26
Anticipated expiration: 2007-06-26

Abstract

The utility model relates to a vertical distance-limiting type hydraulic coupler for the swing mechanism of a tower crane, which comprises an input shaft, an output shaft, a bearing, a turbine, a pump wheel and an outer casing. The utility model is characterized in that a fixed sealing cover is arranged below the outer casing; an O-shaped sealing ring is arranged on the fixed sealing cover; the fixed sealing cover and the outer casing are fixed by a clamping ring for a hole; the output end of the coupler adopts a quincuncial elastic shaft coupling for elastic connection; the back half coupling section of the quincuncial elastic shaft coupling is cast with the outer casing into a whole. The utility model has the advantages of accurate positioning, stable support, no biased swinging and vibration phenomena, good sealing performance, convenient installation, convenient disassembly, convenient maintenance, reasonable structure, reliability, firmness and durability.

Description

The vertical load limiting type of constant filling fluid coupling of tower machine swirl gear

The utility model relates to a kind of vertical load limiting type of constant filling fluid coupling.

Generally adopt the structure of the third edition the 2nd volume 6-127 page or leaf in " mechanical design handbook " in the prior art.There are following five aspect structural imperfection in this coupler, causes poor reliability, working life to be lacked, and brings loss to construction.

1, only is provided with a bearing in the coupler chamber.On the one hand output shaft does not have direct positioning relation with input shaft and is difficult to guarantee coaxial, and input shaft does not have bearing together with shell and supports on the other hand, output shaft one end bearing, and the other end is unsettled, because of supporting unstable permanent generation beat and vibration.

2, input shaft only depends on six fastening connections of M10 screw with shell.Tapped hole portion though screw intensity is enough on the shell of aluminium material is often because of insufficient strength dropout fault, and field maintenance is extremely difficult.

3, this coupler is vertical installation, adopts motive sealing to next end, only uses an oil sealing oil sealing.On the one hand because unstable beat and the influence of vibration sealing effect of easily producing of output shaft supporting; Oil sealing wearing and tearing back working oil gravitate is easy to seepage on the other hand, causes coupler to lose efficacy because of oil-filled degree reduces.

4, the auxilliary chamber of this coupler is designed up, and liquid earial drainage when auxilliary chamber is dumped is not smooth during overload, influences overloading ratio and reduces and overload protective function.

5, this coupler input end is a rigid joint, because structural imperfection own has determined input shaft and output shaft to be difficult to reach coaxial, motor, speed reducer alignment error and open work steel structure be yielding in addition etc., and factor is often impacted coupler input shaft and output shaft because of disalignment suffers alternate load, impel the coupler premature damage, even cause motor or speed reducer off-axis.

Owing to there is above-mentioned defective, cause this coupler rate of fault height, the life-span is short, will change 1～2 in average 1 year.

The purpose of this utility model is to overcome above-mentioned defective a kind of design science is provided, the vertical limit rectangle of reliable tower machine swirl gear rational in infrastructure fluid coupling.

Realize that scheme of the present utility model is as follows: the vertical load limiting type of constant filling fluid coupling of a kind of tower machine swirl gear, comprise input shaft, output shaft, bearing, turbine, pump impeller, shell, it is characterized in that: there is the fixing seal lid shell below, covered the O RunddichtringO, the hole is fixed sealing cover and shell with snap ring, the coupler output terminal adopts plum blossom elastic coupling flexible coupling resilient connection, the back half-coupling of plum blossom elastic coupling flexible coupling and shell cast solid.Auxilliary chamber is positioned at turbine, pump impeller below, is the bilateral symmetry structure.Bearing is positioned at input shaft top and connects with turbine, and bearing is positioned at the input shaft bottom and is connected with shell.

Because it is as follows to adopt the utility model scheme to produce beneficial effect:

1, the location is accurate, supporting is stable, no beat oscillation phenomenon.

2, good airproof performance, installing/dismounting is easy to maintenance.

3, reasonable in design is reliable, sturdy and durable.

Fig. 1 the utility model structural representation.

Below in conjunction with accompanying drawing in detail embodiment is described in detail.

As shown in Figure 1: auxilliary chamber 7 is positioned at the below of turbine 8 and pump impeller 9, for the bilateral symmetry structure, in turbine and pump impeller runner, be provided with flow-stopping plate, and the energy when liquid stream is done big circulation movement when reducing overload, limiting overload moment.In the coupler chamber, be provided with two bearings, bearing 10 is positioned at input shaft 11 tops and connects with turbine 8, the below that bearing 12 is positioned at input shaft 11 is connected with shell, gyro black assemblies such as pump impeller, turbine, shell, main shaft rely on two bearing location, can guarantee that the location is accurate, stable, the no beat vibration of supporting.

Compensatory for guaranteeing that coupler has a self-aligning, with the resilient connection of design of coupler output terminal or band plum blossom elastic coupling flexible coupling, when being installed, slightly different axle can not damage coupler yet, also can install easily simultaneously, dismounting and easily damaged parts spare are changed.

Main shaft and pump impeller etc. are affixed with rivet, the casting of half-coupling and shell fuses behind the plum blossom elastic coupling flexible coupling, and is firm reliable, and it is that the shell below has the fixing seal lid that coupler adopts fixing seal to next end, covered the O RunddichtringO, the hole is fixed sealing cover and shell with snap ring.To guarantee sealing.

Claims

1, the vertical load limiting type of constant filling fluid coupling of a kind of tower machine swirl gear, comprise input shaft, output shaft, bearing, turbine, pump impeller, shell, it is characterized in that: there is fixing seal lid (2) shell (1) below, covered O RunddichtringO (3), the hole is fixing with sealing cover (2) and shell (1) with snap ring (4), the coupler output terminal adopts plum blossom elastic coupling flexible coupling (5) resilient connection, the back half-coupling (6) of plum blossom elastic coupling flexible coupling and shell (1) cast solid.

2, the vertical load limiting type of constant filling fluid coupling of tower machine swirl gear according to claim 1 is characterized in that: auxilliary chamber (7) is positioned at turbine (8), pump impeller (9) below, is the bilateral symmetry structure.

3, the vertical load limiting type of constant filling fluid coupling of tower machine swirl gear according to claim 1 and 2 is characterized in that: bearing (10) is positioned at input shaft (11) top and connects with turbine (8), and bearing (12) is positioned at input shaft (11) bottom and is connected with shell (1).