CN202883387U

CN202883387U - Connecting device of gasoline engine water pump

Info

Publication number: CN202883387U
Application number: CN 201220502941
Authority: CN
Inventors: 徐查庆
Original assignee: ZHEJIANG KEMA POWER MACHINERY CO Ltd
Current assignee: ZHEJIANG KEMA POWER MACHINERY CO Ltd
Priority date: 2012-09-27
Filing date: 2012-09-27
Publication date: 2013-04-17
Anticipated expiration: 2022-09-27

Abstract

A connecting device of a gasoline engine water pump comprises a gasoline engine, wherein a crankshaft of the gasoline engine drives impellers of the water pump. The connecting device of the gasoline engine water pump is characterized in that the water pump comprises a body, the impellers are manufactured on an outer ring of the body, a connecting hole is formed in the body, a key groove, a thrust face and a bolt hole are manufactured on the connecting hole.

Description

A kind of connection set of gasoline engine water pump

Technical field

The utility model relates to gasoline engine water pump, particularly relates to a kind of connection set of gasoline engine water pump.

Background technique

Traditional gasoline engine crank and the Placement of water pump vane mostly are by the body interior machining internal thread at impeller, at bent axle outer wall threading, bent axle directly is threaded with impeller, like this when water pump vane is installed, cause the axial clearance of impeller uncontrollable, the phenomenon that the friction of impeller and the pump housing often occurs, and impeller is when work, internal thread on the impeller had both born axial force and had born again radially twisting force, make itself and bent axle screw thread more stubborn tighter, thereby impeller is difficult to dismounting when causing keeping in repair.

Summary of the invention

The purpose of this utility model is the shortcoming that exists in order to overcome prior art, provides a kind of bent axle and water pump vane easy to connect, and is fixing reliable, guarantees the axial clearance of impeller and the pump housing, and repair demolition is a kind of connection set of gasoline engine water pump easily.

The technological scheme of the connection set of a kind of gasoline engine water pump of the utility model is: comprise petrol engine, the bent axle of petrol engine drives water pump vane, it is characterized in that described water pump vane comprises body, the body outer ring is shaped with impeller, in body, open attachment hole, be shaped with keyway, thrust surface and bolt hole in the attachment hole, bent axle outer wall at petrol engine arranges key, in bent axle, have inner bolt hole, the key of bent axle inserts attachment hole and matches with keyway, the end face of bent axle contacts with thrust surface, and the bolt hole that bolt passes body is threaded with the inner bolt hole of bent axle.

The utility model discloses a kind of connection set of gasoline engine water pump, by the bent axle outer wall at petrol engine key is set, open by keyway at the impeller body inwall, during installation, the key of bent axle is aimed in the attachment hole of keyway insertion body, the bolt hole that passes body with bolt is again tightened mutually with the inner bolt hole of bent axle, during work, the radially torsion of impeller when cooperating the transmission crankshaft rotating by key and keyway, guarantee the working life of water pump body and bent axle, thrust surface withstands on the end face of bent axle, the axial clearance of control impeller and the pump housing, avoid impeller and the pump housing to produce friction, and by bolt bent axle and impeller body are fixed, fixing reliable, bolt only bears axial force, do not bear torsion, convenient disassembly during maintenance.

Description of drawings

Fig. 1 is the structural representation of the connection set of a kind of gasoline engine water pump of the utility model;

Fig. 2 is the structural representation of water pump vane.

Embodiment

The utility model relates to a kind of connection set of gasoline engine water pump, such as Fig. 1-shown in Figure 2, comprise petrol engine 1, the bent axle 11 of petrol engine drives water pump vane 2, it is characterized in that described water pump vane 2 comprises body 21, the body outer ring is shaped with impeller 22, in body, open attachment hole 23, be shaped with keyway 24 in the attachment hole, thrust surface 25 and bolt hole 26, bent axle 11 outer walls at petrol engine arrange key 12, have inner bolt hole 13 in bent axle, and the key of bent axle 11 inserts attachment hole 23 and matches with keyway 24, the end face of bent axle contacts with thrust surface 25, and the bolt hole 26 that bolt 4 passes body 21 is threaded with the inner bolt hole 13 of bent axle 11.By bent axle 11 outer walls at petrol engine 1 key 12 is set, open by keyway 24 at impeller body 21 inwalls, during installation, the key 12 of bent axle 11 is aimed at keyway 24 to be inserted in the attachment hole of body 21, the bolt hole 26 that passes body 21 with bolt 4 is again tightened mutually with the inner bolt hole 13 of bent axle, during work, the radially torsion of impeller when cooperating the transmission crankshaft rotating by key 12 and keyway 24, guarantee the working life of water pump body 21 and bent axle 11, thrust surface 25 withstands on the end face of bent axle, the axial clearance of control impeller 22 and the pump housing is avoided impeller and the pump housing to produce friction, and is fixed by 4 pairs of bent axles 11 of bolt and impeller body 21, fixing reliable, bolt only bears axial force, does not bear torsion, convenient disassembly during maintenance.

Claims

1. the connection set of a gasoline engine water pump, comprise petrol engine (1), the bent axle of petrol engine (11) drives water pump vane (2), it is characterized in that described water pump vane (2) comprises body (21), the body outer ring is shaped with impeller (22), in body, open attachment hole (23), be shaped with keyway (24) in the attachment hole, thrust surface (25) and bolt hole (26), bent axle (11) outer wall at petrol engine arranges key (12), in bent axle, have inner bolt hole (13), the key of bent axle (11) inserts attachment hole (23) and matches with keyway (24), the end face of bent axle contacts with thrust surface (25), and the bolt hole (26) that bolt (4) passes body (21) is threaded with the inner bolt hole (13) of bent axle (11).