CN203784229U

CN203784229U - Sungear

Info

Publication number: CN203784229U
Application number: CN201420198545.3U
Authority: CN
Inventors: 曹羽; 樊裕昕; 曹国鸣
Original assignee: SHINING SHANGHAI CHINA Co Ltd
Current assignee: Suzhou Jinghai Intelligent Equipment Manufacturing Co ltd
Priority date: 2014-04-22
Filing date: 2014-04-22
Publication date: 2014-08-20
Anticipated expiration: 2024-04-22

Abstract

The utility model discloses a sun gear which comprises a rim, gear teeth and at least one eccentric block, wherein the gear teeth are circumferentially arranged on the circumferential surface of the rim; a first mounting hole for mounting a transmission shaft is formed in the middle of the rim; a second mounting hole is formed in the upper part of each eccentric block, the inner side surface of each eccentric block is connected with the outer side surface of the rim, and the first mounting hole and each second mounting hole are concentric. The position where each eccentric block of the sun gear is connected with the gear is the balance point of gravity, two ends of the transmission shaft are evenly stressed after the sun gear is mounted on the transmission shaft, a crushing hammerhead can be prevented from deviating horizontally in one or more directions, crushing positions are precise to points, a set crushing center is impacted repeatedly under the condition that the crushing center is not changed, the vibration energy in the crushing direction is also guaranteed, and the crushing efficiency of a crushing hammer is increased, so that service lives of the transmission shaft, a bearing and a box body are prolonged.

Description

Central gear

Technical field

The utility model relates to a kind of vibration box of high-frequency breaking hammer, relates in particular to a kind of central gear being arranged in vibration box.

Background technique

Vibration box (having another name called vibration exciter) comprises casing and is installed on two eccentric wheels in casing, two eccentric wheels synchronously rotate in the opposite direction by a pair of pitch wheel, and then the centrifugal force component on the center line connecting direction of transmission shaft producing is separately cancelled out each other, the component of center transmission shaft line Vertical direction mutually stack form described excitation force.

Although the vibration exciter of this kind of structure can prevent cracking hammer head occurred level skew in one direction, it still may occurred level skew in other any direction.And being arranged on transmission shaft due to gear, eccentric mass interval, transmission shaft another end will inevitably produce the gravity that is greater than the other end, so just caused stressed irregular on transmission shaft, thereby cause the bearing, casing at two ends because of the stressed irregular damage that produces, greatly reduce the working life of transmission shaft, bearing and casing.

And this will make broken position cannot be accurate to a little, cannot be in the situation that not wishing to change broken center the fixed broken center of repeated stock, but also can cut down the vibrational energy in broken direction, reduce broken effect.

Model utility content

The purpose of this utility model is to solve the problems of the prior art, and a kind of central gear is provided.

The technical solution of the utility model is: central gear, comprise wheel rim and the gear teeth, the described gear teeth are circumferentially arranged on the circumferential surface of described wheel rim, the outer side surface of this wheel rim comprises left surface and right flank, in the neutral position of described wheel rim, offer the first mounting hole of an installation transmission shaft, also comprise at least one eccentric mass, on the top of this eccentric mass, be provided with the second mounting hole, the inner side surface of described eccentric mass and wheel rim outer side surface join, and the first mounting hole is concentric with the second mounting hole.

Preferably, described eccentric mass is one, is arranged on left surface or the right flank of described wheel rim.

Preferably, the weight of described eccentric mass and described gear is equal in weight.

Preferably, described eccentric mass is a pair of, is symmetricly set on respectively left surface and the right flank of described wheel rim.

Preferably, the weight sum of described two eccentric masss is more than or equal to the weight of described gear.

Preferably, the outer side surface of described eccentric mass and the described wheel rim structure that is welded as a whole.

Preferably, all offer a plurality of the 3rd corresponding mounting holes on described eccentric mass and gear, eccentric mass and gear pass described the 3rd mounting hole by bolt and join.

Preferably, the profile of described eccentric mass is semicircle, and this eccentric mass circumferential shapes is with identical with the semi circular surface of described wheel rim.

Preferably, described gear is spur gear or helical gear or people's generating gear.

Preferably, on the outer side surface of described wheel rim, offer a plurality of stress and decompose hole.

The eccentric mass of central gear of the present utility model and the gear connecting part equilibrium of forces point of attaching most importance to, be arranged on transmission shaft and can make the stressed even of transmission shaft two ends, can prevent cracking hammer head occurred level skew in one or more directions, broken position is accurate to a little, the fixed broken center of repeated stock in the situation that not changing broken center, but also guaranteed the vibrational energy in broken direction, increase the broken effect of quartering hammer, and then extended the working life of transmission shaft, bearing and casing.

Accompanying drawing explanation

Fig. 1 is the stereogram of the single eccentric mass of the utility model;

Fig. 2 is the stereogram of the two eccentric masss of the utility model;

Fig. 3 is the plan view of Fig. 2;

Fig. 4 is the rear view of Fig. 2;

Fig. 5 is the side view of Fig. 2;

Fig. 6 is that the utility model is installed the stereogram after transmission shaft;

Fig. 7 is the explosive view of Fig. 6;

Fig. 8 is the gear stereogram of setting-up eccentricity piece not in the utility model;

Fig. 9 is the plan view of eccentric mass in the utility model;

Figure 10 is the constitutional diagram of Fig. 8, Fig. 9;

Figure 11 is two intermeshing schematic diagram of gear in the utility model.

Embodiment

For technological means, technical characteristics, model utility object and the technique effect that the utility model is realized is easy to understand, below in conjunction with concrete diagram, further set forth the utility model.

Be a kind of central gear 10 of the present utility model as shown in Figure 1, 2, the vibration box that is mainly high-frequency breaking hammer provides the parts of power, the utility model comprises wheel rim 100 and the gear teeth 200, the circumferential arrangement of these gear teeth 100 equi-spaced apart is on the circumferential surface of wheel rim, the gear teeth 100 of the present utility model can be straight-tooth, helical teeth or humanoid tooth, in the utility model, with helical teeth best results, the helical teeth of take describes as example.

Outer side surface at wheel rim 100 comprises left surface 101 and right flank 102, in the neutral position of wheel rim 100, offer the first mounting hole 103 of an installation transmission shaft 300, above the first mounting hole 103, offer a plurality of stress and decompose hole 104, for decompose the power applying when two gears are intermeshing.Transmission shaft 300 is fixed connection through this first mounting hole 103.This transmission shaft 300 is for connecting fluid pressure motor or other power plant, in one end of transmission shaft 300, be provided with a mount inlet 301, for the rotating shaft that oil hydraulic motor is installed, by the rotating shaft of oil hydraulic motor, drive the rotation of transmission shaft 300, thereby drive the running of the utility model integral body, with reference to figure 6 and Fig. 7.

The utility model also comprises at least one eccentric mass 400, on the top of this eccentric mass 400, be provided with the second mounting hole 401, this second mounting hole 401 is identical with the pore size of the first mounting hole 103, and after cooperation, the first mounting hole 103 is concentric with the second mounting hole 401, the first mounting hole 103, the second mounting hole 401 are with transmission shaft 300 after assembling, and its center is all positioned on same axis.

The profile of the eccentric mass 400 in the utility model is semicircle, and eccentric mass 400 circumferential shapes are identical with the semi circular surface of wheel rim 100, and the root circle of the periphery of eccentric mass 400 and gear 10 coincides.Certainly in the utility model, only take eccentric mass 400 for semicircle be example, other shapes can realize the also applicable the utility model that can reach eccentric effect.

As shown in Figure 1, when the eccentric mass 400 in the utility model is one, this eccentric mass 400 is arranged on the left surface 101 or right flank 102 of described wheel rim 100, and being equal in weight of the weight of this eccentric mass 400 and gear 100, be that both take connecting part as separatrix, in these marginal both sides, it is equal in weight.Like this this gear 10 is arranged on behind the neutral position of transmission shaft 300, can guarantee that transmission shaft 300 both sides weight keep balance, can to being set in the bearing at transmission shaft 300 two ends, because releasing, power is irregular produce damage, thus the working life of bearing and transmission shaft extended.

As shown in Fig. 2, Fig. 3, Fig. 4 and Fig. 5, the utility model emphasis be take eccentric mass 400 and is introduced when a pair of, eccentric mass 400 is symmetricly set on respectively while being two on the left surface 101 and right flank 102 of wheel rim 100, and by two the second mounting holes 401 and the concentric installation of the first mounting hole 103, eccentric mass 400 positions that guarantee two ends with this always in when assembling.

The weight sum of these two eccentric masss 400 can, according to the transmission effect of oil hydraulic motor, by the weight that is more than or equal to described gear 10 of its weight setting, can play the vibrating effect of expection like this.

The left surface 101 of two eccentric masss 400 and wheel rim 100 and right flank 102 Placements have multiple, mainly comprise integrally casting, welding or are bolted.Wherein during integrally casting after calculating various data, during such as weight, then die sinking makes it one-body molded, processes processing.

As shown in Fig. 1 to 7, welding is by two eccentric masss 400, along the periphery of eccentric mass 400 by its direct spot welding on the left surface 101 and right flank 102 of wheel rim 100, corresponding to guarantee both sides eccentric mass 400 positions, and in the face of left surface 101 and right flank 102.

Shown in figure 8, Fig. 9 and Figure 10, for ease of gear 10 and eccentric mass 400 are dismantled and are installed, by offer a plurality of the 3rd mounting holes 402 for inserting bolt on eccentric mass 400, and on the wheel rim 100 of gear 10, offer a plurality of and the 3rd mounting hole 402 positions and corresponding the 4th mounting hole 105 of size, like this by bolt being inserted into above-mentioned the 3rd mounting hole 402, the 4th mounting hole 104 can be realized the fixedly assembling with wheel rim 100 by eccentric mass 400.

Above-mentioned eccentric mass 400 is also applicable to being connected of single eccentric mass with the Placement of wheel rim 100, certain this Placement is not limited to above-mentioned three kinds, also can be by other Placements, can as long as can eccentric mass, wheel rim are fixedly installed on transmission shaft and realize synchronous rotation.

As Figure 11, be the intermeshing schematic diagram that carry out transmission of two the utility model central gears 10,20, wherein transmission shaft 300 is as driving shaft, and gear 10 is arranged on the neutral position of this transmission shaft 300, what be meshed with gear 10 is gear 20, and gear 20 is arranged on driven shaft 500.

The utility model is when coordinating with high-frequency breaking hammer, by the two ends of transmission shaft 300 302,303, the two ends of driven shaft 500 are arranged in bearing, mount inlet 301 connecting fluid pressure motors on one end 302 of transmission shaft 300, bearing is arranged on the side plate of vibration box, said gear 10,20 is combined as vibrations assembly.

The utility model central gear velocity ratio is stable, transmission efficiency is high, and its structure is comparatively compact, and functional reliability is high, long service life.

Be only the utility model preferred embodiment in sum, be not used for limiting practical range of the present utility model.Be that all equivalences of doing according to the content of the utility model claim change and modify, all should belong to technology category of the present utility model.

Claims

1. central gear, comprise wheel rim and the gear teeth, the described gear teeth are circumferentially arranged on the circumferential surface of described wheel rim, the outer side surface of this wheel rim comprises left surface and right flank, in the neutral position of described wheel rim, offer the first mounting hole of an installation transmission shaft, it is characterized in that: also comprise at least one eccentric mass, on the top of this eccentric mass, be provided with the second mounting hole, the inner side surface of described eccentric mass and wheel rim outer side surface join, and the first mounting hole is concentric with the second mounting hole.

2. central gear according to claim 1, is characterized in that: described eccentric mass is one, is arranged on left surface or the right flank of described wheel rim.

3. central gear according to claim 2, is characterized in that: being equal in weight of the weight of described eccentric mass and described gear.

4. central gear according to claim 1, is characterized in that: described eccentric mass is a pair of, is symmetricly set on respectively left surface and the right flank of described wheel rim.

5. central gear according to claim 4, is characterized in that: the weight sum of described two eccentric masss is more than or equal to the weight of described gear.

6. according to the central gear described in claim 2 or 4 or 5, it is characterized in that: the outer side surface of described eccentric mass and the described wheel rim structure that is welded as a whole.

7. according to the central gear described in claim 2 or 4 or 5, it is characterized in that: on described eccentric mass and gear, all offer a plurality of the 3rd corresponding mounting holes, eccentric mass and gear pass described the 3rd mounting hole by bolt and join.

8. according to the central gear described in claim 2 or 4 or 5, it is characterized in that: the profile of described eccentric mass is for semicircle, and this eccentric mass circumferential shapes is with identical with the semi circular surface of described wheel rim.

9. according to the central gear described in claim 2 to 5 any one, it is characterized in that: described gear is spur gear or helical gear or people's generating gear.

10. according to the central gear described in claim 2 to 5 any one, it is characterized in that: on the outer side surface of described wheel rim, offer a plurality of stress and decompose hole.