CN216713179U

CN216713179U - Ear plate connecting device

Info

Publication number: CN216713179U
Application number: CN202122177865.3U
Authority: CN
Inventors: 李继铭; 方荣超; 李璇; 李利东; 边春红
Original assignee: Xuzhou XCMG Excavator Machinery Co Ltd
Current assignee: Xuzhou XCMG Excavator Machinery Co Ltd
Priority date: 2021-09-09
Filing date: 2021-09-09
Publication date: 2022-06-10
Anticipated expiration: 2031-09-09

Abstract

The utility model discloses an ear plate connecting device, which belongs to the technical field of mechanical engineering and comprises a bottom plate, wherein a supporting column which is hollow inside is fixedly connected to the bottom plate, a sliding part is sleeved on the supporting column, a rotating ring which pushes the sliding part to slide is arranged on the supporting column, and the outer wall of the supporting column is in threaded connection with the rotating ring; the supporting column top is equipped with the holding ring that is used for extrudeing the slider, the holding ring passes through the screw connection and is connected with the support column, the swivel ring is fixed with the holding ring cooperation the slider. The lug plate connecting device can be used for multiple times after the height dimension of the lug plate connecting device is adjusted once, the quality stability of the lug plate during batch production is ensured, the thrust bearing lubricating effect is utilized, the lug plate splicing welding operation is more labor-saving, and the operation efficiency is improved.

Description

Ear plate connecting device

Technical Field

The utility model relates to an excavator ear plate connecting device, and belongs to the technical field of engineering machinery.

Background

The boom and the arm are a work implement of an excavator, and are generally called a boom and a forearm, and mainly function to control operations of the excavator, such as excavation and loading. The arm connected to the frame is long, termed a boom; the arm connected with the excavator bucket is small and is called as an arm, and the arm is an excavator working device on the excavator and comprises a movable arm, an arm, a hydraulic oil cylinder and the like. Swing arm, dipper and adopt the perforated connection of otic placode hinge point hole between the hydraulic cylinder, foraminiferous otic placode subassembly is all adopted to the hinge point hole position in the trade, and the otic placode subassembly contains otic placode and flange plate. In order to match the installation size of the hydraulic oil cylinder, the size of an inner gear of the lug plate needs to be ensured in the movable arm bucket rod splicing process, the inner gear is too small in size and can interfere with the hydraulic oil cylinder, and the lug plate and the hydraulic oil cylinder can generate a gap to influence use due to overlarge size.

In addition, the conditions of uneven stress and unbalanced load of the front and rear lug plate groups can be caused under the actual working condition, so that the structure is unstable and potential safety hazards are generated. The existing welding mode has the following problems: poor welding positioning precision, low working efficiency, large deformation after welding and difficult guarantee of the position between the front lug plate group and the rear lug plate group; the product may have the condition of uneven stress in actual use to cause unstable structure and potential safety hazard.

SUMMERY OF THE UTILITY MODEL

The utility model provides an ear plate connecting device which is used for solving the problem that an ear plate is difficult to connect due to the fact that the size of an inner rail of the ear plate is too large or too small in the prior art. In order to solve the technical problems, the utility model is realized by adopting the following technical scheme:

an ear plate connecting device comprises a bottom plate, wherein a supporting column which is hollow inside is fixedly connected to the bottom plate, a sliding part is sleeved on the supporting column, a rotating ring which pushes the sliding part to slide is arranged on the supporting column, and the outer wall of the supporting column is in threaded connection with the rotating ring; the supporting column top is equipped with the holding ring that is used for extrudeing the slider, the holding ring passes through the screw connection and is connected with the support column, the swivel ring is fixed with the holding ring cooperation the slider.

Preferably, handles symmetrically arranged are fixedly connected to the rotating ring, the handles are radially arranged along the support column, the handles are used for pushing the rotating ring to rotate, and the rotating ring pushes the sliding part to slide.

Preferably, a thrust bearing is arranged between the sliding part and the rotating ring, the thrust bearing is sleeved on the supporting column, and the thrust bearing is used for reducing the friction force of the rotating ring in the process of ascending or descending along the supporting column.

Preferably, the thrust bearing is a ball roller thrust bearing.

Preferably, the positioning ring is provided with a plurality of through holes, and the screws are fixedly connected with the supporting columns through the through holes.

Preferably, a stepped hole is formed in the sliding part, and the aperture of one side, away from the supporting column, of the stepped hole is larger than that of the other side of the stepped hole; the positioning ring is arranged in the stepped hole, and the extrusion force of the positioning ring on the sliding piece acts on the stepped surface in the stepped hole.

Preferably, the inner diameter of the positioning ring is larger than the outer diameter of the supporting column and smaller than the outer diameter of the sliding part.

Compared with the prior art, the utility model has the following beneficial effects:

the positioning ring used for extruding the sliding part is arranged at the top of the supporting column through the setting, the positioning ring is connected with the supporting column through the screw connection, the rotating ring is matched and fixed with the positioning ring, the sliding part realizes the adjustment of the size of the ear plate connecting device by utilizing the limiting effect of the screw and the positioning ring, so that the required size can be quickly and accurately positioned, and the positioning device can be used for multiple times in a circulating mode through once adjustment.

Through be equipped with thrust bearing between slider and rotating ring, on thrust bearing cover located the support column, thrust bearing was used for reducing the rotating ring rises or descends the in-process frictional force along the support column, and the otic placode connecting device can easily rotate reduction height size under the state that is compressed tightly equally, takes out labour saving and time saving easily.

Drawings

FIG. 1 is a schematic diagram of a boom cylinder ear plate structure in the prior art;

FIG. 2 is a schematic diagram of a lug plate structure of a bucket rod cylinder in the prior art;

fig. 3 is a schematic structural diagram of an ear plate connection device according to an embodiment of the present invention;

FIG. 4 is a cross-sectional view of an ear plate attachment device in accordance with an embodiment of the present invention;

fig. 5 is an assembly view of an ear plate connecting device according to an embodiment of the present invention.

In the figure: 01-boom cylinder ear plate; 02-bucket cylinder ear plate; 03-lug plate of bucket rod oil cylinder; 1-a slide; 2-a bearing; 3-a handle; 4-a bottom plate; 5-a screw; 6. a positioning ring; 7-ear plate connection means; 8-upper sealing plate; 9-ear plate; 10-a support base; 11-a support column; 12-rotating ring.

Detailed Description

The present invention is further described with reference to the accompanying drawings, and the following examples are only for clearly illustrating the technical solutions of the present invention, and should not be taken as limiting the scope of the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.

As shown in fig. 1 to 2, in the prior art, a welding method used for a boom cylinder ear plate, a bucket rod cylinder ear plate and a bucket rod cylinder ear plate of an excavator is to tightly support the size of an inner stop of a positioning ear plate of a tool by using a circular steel tube or a simple thread; secondly, because the otic placode welds and warp the shrink of interior shelves, lead to that circular steel tube or simple and easy screw thread prop tight frock and be pressed from both sides tightly by the otic placode and be difficult for taking out, waste time and energy.

As shown in fig. 5, an embodiment of the present invention provides an ear plate connecting device 7, where the ear plate connecting device 7 is disposed between two ear plates 9, and the ear plates 9 are disposed on a supporting base 10, specifically, as shown in fig. 3, the ear plate connecting device includes a bottom plate 4, in the present invention, the bottom plate 4 is circular, a circular supporting column 11 with a hollow interior is fixedly connected to the bottom plate 4, a sliding member 1 is disposed on a top portion of an upper outer wall of the supporting column 11, the sliding member 1 is a circular layer of top plate, the sliding member 1 is sleeved on the supporting column 11, a rotating ring 12 for pushing the sliding member 1 to slide is disposed on one side of the outer wall of the supporting column 11 close to the bottom plate 4, and an outer wall of the supporting column 11 is in threaded connection with the rotating ring 12; the handles 3 are symmetrically arranged and fixedly connected to the rotating ring 12, the handles 3 are radially arranged along the supporting column 11, the handles 3 are used for pushing the rotating ring 12 to rotate, and the rotating ring 12 pushes the sliding piece 1 to ascend or descend along the supporting column 11. In addition, a thrust bearing 2 is arranged between the sliding part 1 and the rotating ring 12, the thrust bearing 2 is a thrust ball roller bearing, the thrust bearing 2 is sleeved on the supporting column 11, and the thrust bearing 2 is used for reducing the friction force of the rotating ring 12 in the process of ascending or descending along the supporting column 11.

The top of the supporting column 11 is provided with a positioning ring 6 for extruding the sliding part 1, and the inner diameter of the positioning ring 6 is larger than the outer diameter of the supporting column 11 and smaller than the outer diameter of the sliding part 1. The positioning ring 6 is connected with the supporting column 11 through screw connection, and the rotating ring 12 is matched with the positioning ring 6 to fix the sliding part 1. The positioning ring 6 is provided with a plurality of through holes, and the screws 5 are fixedly connected with the supporting columns 11 through the through holes. A stepped hole is formed in the sliding part 1, and the aperture of one side, away from the supporting column 11, of the stepped hole is larger than that of the other side of the stepped hole; the positioning ring 6 is arranged in the stepped hole, and the positioning ring 6 applies extrusion force to the sliding part 1 to limit the displacement range of the sliding part 1 on the stepped surface in the stepped hole.

An ear plate connecting device working method comprises the following steps: as shown in fig. 5, before use, the ear plate connecting device 7 is placed between the two ear plates 9, when the device is used, as shown in fig. 2 to 4, the screw 5 is loosened, the handle 3 is rotated, at this time, the rotating ring 12 pushes the sliding part 1 to ascend or descend along the supporting column 11, the maximum size of the height of the ear plate connecting device 7 is adjusted, the maximum size is equal to the inner size of the ear plate 9, the ear plate connecting device 7 is adjusted to the maximum size by using the handle 3, the upper sealing plate 8 and the ear plates 9 are spliced, and after the splicing welding is completed, the ear plate connecting device 7 is clamped by the ear plates 9 due to the welding shrinkage of the ear plates 9. With the help of the rotation of the thrust ball roller bearing 2 to reduce friction force, the handle 3 can easily rotate the lug plate connecting device 7 to reduce the overall height, the lug plate connecting device 7 is taken out, and the lug plate 9 splicing welding assembly process is completed.

According to the utility model, the positioning ring for extruding the sliding part is arranged at the top of the supporting column, the positioning ring is connected with the supporting column through the screw, the rotating ring is matched with the positioning ring to fix the sliding part, and the size of the ear plate connecting device is adjusted by utilizing the limiting action of the screw and the positioning ring, so that the required size is quickly and accurately positioned, the adjustment is carried out once, and the ear plate connecting device can be recycled for multiple times.

The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, it is possible to make various improvements and modifications without departing from the technical principle of the present invention, and those improvements and modifications should be considered as the protection scope of the present invention.

Claims

1. The ear plate connecting device is characterized by comprising a bottom plate (4), wherein a supporting column (11) which is hollow inside is fixedly connected to the bottom plate (4), a sliding part (1) is sleeved on the supporting column (11), a rotating ring (12) for pushing the sliding part (1) to slide is arranged on the supporting column (11), and the outer wall of the supporting column (11) is in threaded connection with the rotating ring (12);

support column (11) top is equipped with holding ring (6) that are used for extrudeing slider (1), holding ring (6) are connected with support column (11) through the screw connection, swivel ring (12) are fixed with holding ring (6) cooperation slider (1).

2. An ear plate connection device according to claim 1, characterized in that symmetrically arranged handles (3) are fixedly connected to the rotary ring (12), said handles (3) being arranged radially along the support post (11), said handles being adapted to urge the rotary ring (12) to rotate, said rotary ring (12) urging the sliding member (1) to slide.

3. An ear plate connection device according to claim 1, characterized in that a thrust bearing (2) is provided between the sliding member (1) and the rotary ring (12), the thrust bearing (2) is sleeved on the supporting column (11), and the thrust bearing (2) is used for reducing the friction force during the ascending or descending process of the rotary ring (12) along the supporting column (11).

4. An ear plate connection device according to claim 3, characterized in that the thrust bearing (2) is a thrust ball roller bearing.

5. An ear plate connection device according to claim 1, characterized in that the positioning ring (6) is provided with a plurality of through holes, through which the screws (5) are fixedly connected to the support posts (11).

6. Ear plate connection according to claim 1, characterized in that a stepped hole is provided in the sliding part (1), the diameter of the stepped hole on the side facing away from the supporting column (11) being larger than the diameter of the stepped hole on the other side; the positioning ring (6) is arranged in the stepped hole, and the extrusion force of the positioning ring (6) on the sliding part (1) acts on the stepped surface in the stepped hole.

7. Otic placode connecting device according to claim 1, characterized in that the inner diameter of the retaining ring (6) is larger than the outer diameter of the supporting column (11) and smaller than the outer diameter of the sliding member (1).