CN202392092U - Speed reduction box for oil pumping unit - Google Patents

Abstract

The utility model discloses a speed reduction box for an oil pumping unit, which comprises a manhole cover anti-theft device, a step type speed reduction lower box body with a special oil drain hole and an anti-leakage structure. A box body of the speed reduction box is the step type speed reduction lower box body, and a plurality of protrusions, the special oil drain hole and an anti-theft bolt are arranged at the bottom of the step type speed reduction lower box body. The manhole cover anti-theft device is arranged on a cover of the step type speed reduction lower box body and is formed by combining a manhole cover and the anti-theft bolt. A lower box body anti-theft device is formed by the specially-designed oil drain hole and the anti-theft bolt. The anti-leakage structure is formed by combining a labyrinth type bearing cover and a direct oil return hole. The speed reduction box capable of saving oil, avoiding leakage and preventing lubricate oil from being stolen has the advantages that the lubricate oil is saved, and effects of energy saving and environment protection are achieved; the lubricate oil is prevented from leaking when the speed reduction box works; and lubricate oil of the speed reduction box is prevented from being stolen.

Description

A kind of speed reducer that is used for pumping unit

Technical field:

The utility model belongs to mechanical field, relates to a kind of speed reducer, especially a kind of speed reducer that is used for pumping unit.

Background technique:

Existing technology is to adopt routine, on bearing cap, prevents the leakage of oil measure with mazy type.This technology just adopts on the many equipment of China's fifties in last century.Adopting labyrinth structure is a kind of conventional measure that prevents oil leakage.

Adopt the anti-leakage of oil measure of conventional mazy type; When utilizing lubricant oil that maze-type structure makes bearing to gear shaft; Not directly to leak, and reduce oily flow velocity, get back to oil sump through the oil-return groove of labyrinth and below by maze-type structure. shortcoming is; When lubricants capacity is big, still can not solve the leakage of oil problem.

The model utility content:

The purpose of the utility model is to overcome above-mentioned existing technology shortcoming, and a kind of speed reducer that is used for pumping unit is provided.There are not fuel-economizing, leakage proof, three kinds of structures of anti-theft lubricant retarder together in the retarder that former pumping unit uses.

The technical problem that mainly solves is: it is too big that (1) adopts novel reduction case to solve the lubricant oil consumption, causes the gear reducer lube waste.(2) adopt mazy type bearing cap and the casing that new type speed reducer combines, flow of lubricant is combined from the anti-gear leakage of oil mode of direct oil return of bearing hole and labyrinth behind bearing cap solve the retarder problem of leakage of oil at work.(3) adopt to improve deceleration box drain the oil screw design and add antitheft oil discharge screw and inspection hole cover anti-theft device, can effectively solve the stolen problem of gear reducer lube.

The purpose of the utility model solves through following technological scheme:

A kind of speed reducer that is used for pumping unit comprises inspection hole cover anti-theft device, step type deceleration box and antitheft jettison gear and anti-leakage structure;

The casing of said speed reducer is the step type deceleration box, and this step type deceleration box bottom part is protruding;

Said speed reducer case lid is provided with inspection hole cover anti-theft device and drain oil anti-theft device;

Said inspection hole cover anti-theft device combines with the antitheft oil discharge screw, and said drain oil is by step type speed reducer casing and anti-theft bolt be combined into;

Said anti-leakage structure is combined with direct spill port by the mazy type bearing cap and constitutes;

Said step type speed reducer casing is an integral body with the case lid with antitheft inspection hole cover altogether.

Said oil discharge screw is by two-part be combined into up and down, and a step is arranged at outside thread top, bottom, and there is an eccentric circle inner chamber step inside, and the bottom is screwed into speed reducer casing or inspection hole cover; The lower end step platform of drain oil thread center is lower than casing drain oil plane, and turning on the bottom oil-draining locknut then must have top to combine and could open.

Compared with prior art the utlity model has following beneficial technical effects

(1) adopt the step type deceleration box, satisfying under the lubricated prerequisite of, two, three shaftgears, rectangular box has than before been practiced thrift a large amount of lubricant oil, and can reduce box weight.

(2) adopt the mazy type bearing cap leak-proof measure that combines with direct spill port; Can make most of lubricant oil bearing directly get back to lubricating oil bath by spill port; Adopt low-angle spill port can make lubricant oil flow back to lubricating oil bath swimmingly, the spill port of casing level stops up because of flow velocity forms oil return too slowly before changing.And the excessive lubricant oil to gear shaft of fraction flows back to lubricating oil bath by the mazy type bearing cap.

(3) adopt the reduction case of anti-theft lubricant design and inspection hole cover to combine, can prevent the phenomenon that gear reducer lube is stolen effectively with the oil discharge screw of guarding against theft, oil discharge screw by about two-part be combined into; A step is arranged at outside thread top, bottom, and there is an eccentric circle inner chamber step inside, and the bottom is screwed into the speed reducer casing; The lower end step platform is lower than casing drain oil plane; Can not touch oil-draining locknut so outside, can't open, when needing to open oil-draining locknut; To could open with the top special-purpose member that matches with the anti-theft bolt bottom, so just prevent to steal the problem of the lubricant oil of speed reducer effectively.

(4) on the employing inspection hole cover anti-theft bolt is installed; And at inspection hole cover installation anti-theft bolt outside weldings steel pipe; The steel pipe height is higher than the anti-theft bolt bottom, like this, and when opening inspection hole cover; To could open with the top special-purpose member that matches with the anti-theft bolt bottom, so just prevent to steal the problem of speed reducer lubricant oil effectively from inspection hole cover.

The utility model adopts the retarder of fuel-economizing, leakage proof, anti-theft lubricant can reach following purpose: practice thrift lubricant oil, play effects such as energy-conserving and environment-protective; Prevent speed reducer seepage lubricant oil when work; Prevent to steal speed reducer lubricant oil.

Description of drawings:

Fig. 1 a-Fig. 1 b is existing speed reducer structural representation; Wherein Fig. 1 a is that plan view, Fig. 1 b are sectional view;

Fig. 2 a-Fig. 2 b is the speed reducer structural representation of the utility model; Wherein Fig. 2 a is that plan view, Fig. 2 b are sectional view;

Fig. 3 a-Fig. 3 b is the anti-theft device structural representation of the utility model; Wherein Fig. 3 a is that anti-theft device structural representation, Fig. 3 b are the anti-theft device scheme of installation;

Fig. 4 a-Fig. 4 b is an inspection hole cover anti-theft device structural representation; Wherein Fig. 4 a is that plan view, Fig. 4 b are sectional view.

Wherein: 1 is the step type deceleration box; 2 is anti-leakage structure; 3 is the drain oil anti-theft device; 4 is anti-theft bolt top; 5 anti-theft bolt bottoms; 6 is anti-theft bolt; 7 is screws valve for preventing illagel application.

Embodiment:

Below in conjunction with accompanying drawing the utility model is done and to be described in further detail:

Referring to Fig. 2 a-4b, a kind of speed reducer that is used for pumping unit comprises inspection hole cover anti-theft device, step type deceleration box and antitheft jettison gear and anti-leakage structure;

The casing of said speed reducer is the step type deceleration box, and this step type deceleration box bottom part is protruding;

Said step type deceleration box is provided with the inspection hole cover anti-theft device and is combined with the antitheft oil discharge screw by reduction case, is made up of two-part; Said drain oil is by step type speed reducer casing and anti-theft bolt be combined into.

Said anti-leakage structure is combined with direct spill port by the mazy type bearing cap and constitutes.

Said anti-theft bolt is by two-part be combined into up and down; A step is arranged at outside thread top, bottom; There is an eccentric circle inner chamber step inside, and the bottom is screwed into speed reducer casing or inspection hole cover, and anti-theft bolt lower end step is lower than casing drain oil or inspection hole cover welded tube plane.Opening anti-theft bolt must be combined and could be opened by top.

This product has following characteristics than other products of the same type:

Adopted conservation measures at lower box, promptly original lower box is the structure of rectangle, and the lubricant oil of retarder use when work is many like this, causes waste.We are through calculating, and gear and bearing is lubricated when using this form of improved can satisfy retarder work, can fuel-economizing 30% and also improvement after this structure can be suitable for all retarders of pumping unit.

On the bearing cap of driving shaft and driven shaft, adopt the anti-leakage of oil measure of mazy type; And adopt direct spill port at lower box, make the lubricant oil that is used on the bearing like this after lubricating bearings, directly get back to the oil sump of lower box through the spill port of lower box.The anti-leakage of oil measure of the mazy type that adopts on the bearing cap of driving shaft and driven shaft can form the second road leak-proof arrangement, and lubricant oil is got back to the oil sump of lower box through the hole of bottom in maze-type structure.

Because pumping unit is worked for a long time in the open air, the lubricant oil steal phenomenon especially severe of speed reducer, this product has designed anti-theft feature at the lower box and the inspection hole cover of retarder, when unclamping anti-theft bolt and inspection hole cover, must use special-purpose instrument just can open.

This product has adopted above-mentioned three kinds of structures, has realized the function of fuel-economizing, leakage proof, antitheft, is a kind of novel design.Can in the speed reducer that all pumping units use, use.

Above content is the further explain that combines concrete preferred implementation that the utility model is done; The embodiment that can not assert the utility model only limits to this; Those of ordinary skill for technical field under the utility model; Under the prerequisite that does not break away from the utility model design, can also make some simple deduction or replace, all should be regarded as belonging to the utility model and confirm scope of patent protection by claims of being submitted to.

Claims (2)

1. speed reducer that is used for pumping unit is characterized in that:

Comprise inspection hole cover anti-theft device, step type deceleration box and antitheft jettison gear and anti-leakage structure;

The casing of said speed reducer is the step type deceleration box, and this step type deceleration box bottom part is protruding;

Said speed reducer case lid is provided with inspection hole cover anti-theft device and drain oil anti-theft device;

Said inspection hole cover anti-theft device combines with the antitheft oil discharge screw, and said drain oil is by step type speed reducer casing and anti-theft bolt be combined into;

Said anti-leakage structure is combined with direct spill port by the mazy type bearing cap and constitutes;

Said step type speed reducer casing is an integral body with the case lid with antitheft inspection hole cover altogether.

2. be used for the speed reducer of pumping unit according to claim 1, it is characterized in that:

Said oil discharge screw is by two-part be combined into up and down, and a step is arranged at outside thread top, bottom, and there is an eccentric circle inner chamber step inside, and the bottom is screwed into speed reducer casing or inspection hole cover; The lower end step platform of drain oil thread center is lower than casing drain oil plane, and turning on the bottom oil-draining locknut then must have top to combine and could open.

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