CN212536057U - Cycloid pump for forklift - Google Patents

Abstract

The utility model relates to a fork truck equipment field especially relates to a cycloid pump for fork truck. The oil distribution pump comprises a pump body, wherein an outer rotor and an inner rotor which is eccentrically arranged are arranged in the pump body, the outer rotor and the inner rotor are meshed, an oil distribution plate is movably arranged in the pump body and is manufactured in a split mode with the pump body, and the oil distribution plate is embedded between the inner rotor and the outer rotor. The utility model discloses a make alone and the branch oiled-plate that the activity set up, can effectively reduce the wearing and tearing that inner rotor and external rotor produced the branch oiled-plate in the operation process, guarantee to divide oiled-plate life, reduce its volume and cost.

Description

Cycloid pump for forklift

Technical Field

The utility model relates to a fork truck equipment field especially relates to a cycloid pump for fork truck.

Background

The forklift is widely applied to ports, stations, airports, goods yards, factory workshops, warehouses, circulation centers, distribution centers and the like, carries out loading, unloading and carrying operations of pallet goods in cabins, carriages and containers, and is essential equipment in pallet transportation and container transportation. The cycloid pump is a commonly used part on a vehicle, and is 2012.08.15 as the Chinese patent No. CN202381323U, and the patent named as the cycloid pump for the automatic transmission of the car discloses the cycloid pump, which comprises a pump body (1) and a pump cover (2), wherein an outer rotor (3) is arranged in the pump body (1), an inner rotor (4) is arranged in the outer rotor in a meshed mode, a spline shaft (5) is connected in the inner rotor in a penetrating mode and is arranged inside the pump cover (2), the spline shaft and the pump cover are made in a split mode, an oil inlet (6), an oil outlet (7) and an oil return hole (8) are arranged in the pump body, an oil suction cavity (9) and an oil pressing cavity (10) are arranged at a gap between the inner rotor and the outer rotor, and an oil sealing block (11) is arranged.

However, the existing cycloid pump has a problem that the oil distribution plate is basically fixedly arranged in the pump body and is integrally formed with the pump body, and due to the reasons of installation matching precision, working environment and the like, the inner rotor and the outer rotor are easy to abrade the oil distribution plate in the operation process, so that the oil distribution plate is easy to abrade too much and lose efficacy, and in order to reserve abrasion loss, the oil distribution plate has to enlarge the size, so that the cost is correspondingly increased.

Disclosure of Invention

The utility model provides a cycloid pump for fork truck adopts the branch oil board of independent preparation and activity setting, can effectively reduce the wearing and tearing that inner rotor and outer rotor produced the oil board in the operation, guarantees to divide oil board life, reduces its volume and cost.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the utility model provides a cycloid pump for fork truck, includes the pump body, is equipped with outer rotor and eccentric arrangement's inner rotor in the pump body, and outer rotor and inner rotor mesh mutually, the activity is provided with the oil distribution plate in the pump body, and oil distribution plate and pump body components of a whole that can function independently preparation, oil distribution plate inlay to be established between inner rotor and outer rotor. In this scheme, divide the oiled-plate to be an solitary part, not even as an organic whole with the pump body, and divide the oiled-plate to be the activity setting, can adjust according to the assembly error of the pump body, just so can not lead to dividing oiled-plate partial wear too big because of factors such as assembly error or operational environment unstability, and simultaneously owing to need not reserve the wearing and tearing volume, can do the volume of dividing the oiled-plate for a short time, and then reduce cost, divide the oiled-plate to stably install the back and inlay including and establish between rotor and the external rotor simultaneously, the position is relatively stable, can normally play the oil-separating effect.

Preferably, the oil distribution plate is clamped between the gear teeth of the inner rotor and the gear teeth of the outer rotor. The gear teeth of the inner rotor and the gear teeth of the outer rotor are used for clamping and limiting the oil distribution plate, so that the position of the oil distribution plate is relatively fixed, and a stable working state can be kept.

Preferably, the oil distribution plate is crescent, the gear teeth of the inner rotor abut against the inner side of the oil distribution plate, and the gear teeth of the outer rotor abut against the outer side of the oil distribution plate. The outline of the oil distribution plate is matched with the outline of the gear of the inner rotor and the outline of the gear of the outer rotor, so that the friction is further reduced, and the loss of the oil distribution plate is reduced.

Preferably, both ends of the oil distribution plate are provided with convex clamping portions, the pump body is provided with clamping grooves matched with the clamping portions, the clamping portions correspond to the clamping grooves one to one, the clamping portions extend into the clamping grooves, and the clamping portions are inserted into the clamping grooves.

Preferably, a slot is arranged in the pump body, an inserting part is arranged on the oil distribution plate, and the inserting part is rotatably inserted into the slot. The oil distribution plate can be positioned in the pump body by matching the insertion part with the slot, and can rotate by a certain angle, and the position of the oil distribution plate is finely adjusted according to the assembly and the working condition of the inner rotor and the outer rotor, so that the abrasion is reduced.

Preferably, the inserting part is provided with a blocking rib, the slot is provided with a notch for the blocking rib to extend into, and the inner wall of the notch is limited by the oil distribution plate when contacting with the blocking rib. The blocking rib is used for limiting the rotation angle of the oil distribution plate so as to prevent the oil distribution plate from completely dislocating due to accidents.

Preferably, the notch has a sector-shaped cross section. The fan-shaped cross section can stably ensure that the blocking rib moves within a certain angle range, and can effectively limit the blocking rib.

Preferably, the oil distribution plate is made of copper. The copper material is wear-resistant, the strength of the formed oil distribution plate is higher than that of iron (the pump body is generally made of iron), and the strength and the service life of the oil distribution plate are guaranteed.

The utility model has the advantages that: the oil distribution plate is an independent part and is movably arranged, and can be adjusted according to the assembly error of the pump body, so that the local abrasion of the oil distribution plate is not too large due to the factors such as the assembly error or unstable working environment, and meanwhile, the volume of the oil distribution plate can be reduced due to no reserved abrasion loss, and the cost is reduced; the oil distribution plate can be positioned in the pump body by matching the insertion part with the slot, and can rotate by a certain angle, and the position of the oil distribution plate is finely adjusted according to the assembly and the working condition of the inner rotor and the outer rotor, so that the abrasion is reduced.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly described below, and it is obvious that the drawings in the description below are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the following drawings without inventive work.

Fig. 1 is a schematic structural diagram of embodiment 1 of the present invention;

fig. 2 is a schematic view of the internal structure of embodiment 1 of the present invention;

fig. 3 is a schematic structural view of a pump body in embodiment 1 of the present invention;

fig. 4 is a schematic structural view of an oil distribution plate in embodiment 1 of the present invention;

fig. 5 is a schematic structural view of the insertion portion in embodiment 2 of the present invention.

Reference numerals: the pump body 1, outer rotor 2, inner rotor 3, divide oiled-plate 4, joint portion 5, draw-in groove 6, slot 7, grafting portion 8, fender muscle 9, breach 10.

Detailed Description

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and to simplify the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.

In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

A cycloid pump for a forklift according to an embodiment of the present invention will be described with reference to the accompanying drawings,

example 1: as shown in figures 1 to 4 of the drawings,

the utility model provides a cycloid pump for fork truck, includes the pump body 1, is equipped with outer rotor 2 and eccentric arrangement's inner rotor 3 in the pump body, and outer rotor and inner rotor mesh mutually, and the activity is provided with oil distribution plate 4 in the pump body, and oil distribution plate and pump body components of a whole that can function independently preparation, oil distribution plate inlay to be established between inner rotor and outer rotor. In this scheme, divide the oiled-plate to be an solitary part, not even as an organic whole with the pump body, and divide the oiled-plate to be the activity setting, can adjust according to the assembly error of the pump body, just so can not lead to dividing oiled-plate partial wear too big because of factors such as assembly error or operational environment unstability, and simultaneously owing to need not reserve the wearing and tearing volume, can do the volume of dividing the oiled-plate for a short time, and then reduce cost, divide the oiled-plate to stably install the back and inlay including and establish between rotor and the external rotor simultaneously, the position is relatively stable, can normally play the oil-separating effect.

The both ends of oil distribution plate all are equipped with convex joint portion 5, be equipped with on the pump body with joint portion assorted draw-in groove 6, joint portion and draw-in groove one-to-one, joint portion stretches into in the draw-in groove, joint portion inserts and establishes in the draw-in groove, joint portion and draw-in groove take the mode of pegging graft and form clearance fit, be not the dead connected mode completely admittedly, oil distribution plate can carry out the position adjustment according to the assembly error of the pump body, the matched mode of two joint portions and two draw-in grooves simultaneously, oil distribution plate is also relatively stable, the transition displacement can not take place, guarantee oil distribution plate steady operation. The oil separating plate is clamped between the gear teeth of the inner rotor and the gear teeth of the outer rotor, and the oil separating plate is clamped and limited through the gear teeth of the inner rotor and the gear teeth of the outer rotor, so that the position of the oil separating plate is relatively fixed, and a stable working state can be kept. The oil distribution plate is crescent, the gear teeth of the inner rotor are abutted to the inner side of the oil distribution plate, the gear teeth of the outer rotor are abutted to the outer side of the oil distribution plate, the outline of the oil distribution plate is matched with the outline of the gear teeth of the inner rotor and the outline of the gear teeth of the outer rotor, friction is further reduced, and loss of the oil distribution plate is reduced. The oil distribution plate is made of copper, the copper is wear-resistant, the strength of the formed oil distribution plate is higher than that of iron (the pump body is generally made of iron), and the strength and the service life of the oil distribution plate are guaranteed.

Example 2: based on the structure of the above embodiment, as shown in fig. 5,

be equipped with slot 7 in the pump body, be equipped with grafting portion 8 on the oil distribution plate, grafting portion rotationally inserts and establishes in the slot, and grafting portion and slot cooperation can be fixed a position oil distribution plate in the pump body, and oil distribution plate can rotate certain angle, finely tunes the position of oneself according to the assembly and the operating mode of inner rotor and outer rotor to reduce wearing and tearing. Be equipped with on the grafting portion and keep off muscle 9, be equipped with on the slot and be used for keeping off the breach 10 that the muscle stretches into, the inner wall of breach is in order to be spacing to the oiled plate with keeping off the muscle contact time, keeps off the rotation angle that the muscle is used for the restriction to divide the oiled plate to prevent that the accident from resulting in dividing the oiled plate to dislocate completely. The cross-section of breach is fan-shaped, and fan-shaped cross-section can guarantee steadily that the fender muscle moves at certain angle within range, and can carry on spacingly to keeping off the muscle effectively.

The above is only the preferred embodiment of the present invention, and the patent scope of the present invention is not limited thereby, all the equivalent structure changes made by the contents of the specification and the drawings are utilized under the inventive concept of the present invention, or the direct/indirect application in other related technical fields is included in the patent protection scope of the present invention.

Claims (8)

1. The utility model provides a cycloid pump for fork truck, includes the pump body, is equipped with outer rotor and eccentric arrangement's inner rotor in the pump body, and outer rotor and inner rotor mesh mutually, characterized by, the activity is provided with the oil distribution plate in the pump body, and oil distribution plate and the pump body components of a whole that can function independently preparation, oil distribution plate inlay to be established between inner rotor and outer rotor.

2. The gerotor pump of claim 1, wherein the oil distribution plate is sandwiched between the teeth of the inner rotor and the teeth of the outer rotor.

3. The gerotor pump for a forklift truck according to claim 2, wherein the oil distribution plate is crescent-shaped, the teeth of the inner rotor abut against the inner side of the oil distribution plate, and the teeth of the outer rotor abut against the outer side of the oil distribution plate.

4. The cycloid pump of claim 3, wherein the oil distribution plate is provided at both ends thereof with protruding snap-in portions, the pump body is provided with snap-in grooves matching with the snap-in portions, the snap-in portions correspond to the snap-in grooves one to one, the snap-in portions extend into the snap-in grooves, and the snap-in portions are inserted into the snap-in grooves.

5. The gerotor pump for a forklift truck according to claim 1, wherein the pump body has a slot formed therein, and the oil distribution plate has an insertion portion rotatably inserted in the slot.

6. The cycloid pump of claim 5 wherein the insert portion has a rib, the slot has a notch for the rib to extend into, and the inner wall of the notch is in contact with the rib to limit the oil distribution plate.

7. The gerotor pump of claim 6, wherein the notch is fan-shaped in cross-section.

8. The gerotor pump for a forklift truck according to any one of claims 1 to 7, wherein the oil distribution plate is made of copper.

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