CN108313898B

CN108313898B - Truss type rotary table and engineering machinery

Info

Publication number: CN108313898B
Application number: CN201810137309.3A
Authority: CN
Inventors: 邱剑; 赵旭光; 贺图升; 李佳丽
Original assignee: Shaoguan University
Current assignee: Shaoguan University
Priority date: 2018-02-10
Filing date: 2018-02-10
Publication date: 2020-06-12
Anticipated expiration: 2038-02-10
Also published as: CN108313898A

Abstract

The invention relates to a truss type rotary table which comprises a base plate, combined columns, a first pin shaft, a second pin shaft, a third pin shaft, a fourth pin shaft, a first rod, a second rod, a third rod, a fourth rod, a fifth rod, a first shaft sleeve, a second shaft sleeve and a baffle plate. The fourth pin shaft is connected with the arm support, the third pin shaft is connected with the arm support oil cylinder, and the bottom plate is connected with the fixed rotary table. The rotary table adopts a truss-type rod as a basic structural member, and the hinge pin and the shaft sleeve are utilized for connection, fastening and limiting, so that a larger internal space can be provided, and the existence of welding residual stress is avoided. The rod piece can be designed in a modularized mode according to actual conditions, and the purposes of universalization and standardization are achieved.

Description

Truss type rotary table and engineering machinery

Technical Field

The invention mainly relates to the technical field of slewing mechanisms and engineering machinery, in particular to a rotary table and the engineering machinery with the rotary table.

Background

In the field of engineering machinery, especially for engineering machinery requiring rotary operation such as concrete pump trucks, cranes, distributing boom and the like, the function of the turntable is indispensable. The turntable is used as an important part for connecting the upper arm support and the lower base and plays roles in fixing, rotating and connecting.

The rotary table has various expression forms, and at present, a plurality of technologies related to the rotary table exist. For example, patent CN201430443326 discloses a turntable appearance, which can represent the mainstream shape and technical features of the current turntable. The rotary table is provided with holes on a bottom plate, the rotary table can be respectively connected with a fixed rotary table or a rotary mechanism, a pin shaft hole is formed on a vertical plate and can be connected with an arm support, and all plates and parts are fixedly formed into a whole in a welding mode. In addition, patent CN201510867490 discloses an invention, in which holes are also machined in the bottom plate, and the parts are fixed together by welding. But through changing the layout form of parts and increasing the counter weight design, the possibility of weld joint cracking and fastening bolt fracture between the parts is reduced.

In the prior art, the parts of the turntable are all connected together by welding, and the welding connection is a very stable connection. However, during the welding operation, a very high temperature is inevitably generated, which changes the properties of the original material and generates residual stress, so that the weld joint is often cracked in the actual use. Weld cracking often presents a serious safety hazard. The welded rotary table is obtained by assembling and welding parts, but each part needs to be processed and manufactured according to a specific size, and the parts of the rotary tables of various specifications are not compatible with each other. In addition, the welded turntable will eventually form a stable and closed whole. But due to the closed construction, maintenance is inconvenient in case of failure of other parts inside the turntable.

Disclosure of Invention

The invention provides a truss type rotary table and engineering machinery, which can prevent the occurrence of a fault of welding line cracking caused by excessive welding operation, solve the problem of inconvenient internal maintenance caused by a closed structure, and carry out modular design and manufacture according to actual production.

The technical scheme adopted by the invention for solving the technical problems is as follows: the utility model provides a truss-like revolving stage, includes bottom plate, combination post, first round pin axle, second round pin axle, third round pin axle, fourth round pin axle, first pole, second pole, third pole, fourth pole, fifth pole, first axle sleeve, second axle sleeve, baffle, and the combination post includes six, is parallel fixed mounting respectively on the bottom plate according to a certain position, has all seted up the round pin shaft hole on every combination post for installation length varies, first round pin axle, second round pin axle and third round pin axle that the structural style differs.

Further, the first rods comprise two rods which are arranged in parallel with the bottom plate; the second pole includes two, and with the vertical placing of bottom plate, both poles all are equipped with the same round pin shaft hole. The first rod, the second rod and the combined column are connected together through a first pin shaft (arranged in parallel with the bottom plate) and are connected in a limiting and fastening mode through a baffle plate.

Furthermore, the number of the third rods is two, and the third rods and the bottom plate are obliquely arranged at a certain angle; the fourth rod includes two, with the vertical placing of bottom plate, all is equipped with the same round pin shaft hole on two poles. The first rod, the third rod, the fourth rod and the combined column (which is arranged in parallel with the bottom plate) are connected together through a second pin shaft (two). The second pin shaft is provided with an external thread, the second shaft sleeve is provided with an internal thread, and the second pin shaft and the second shaft sleeve are matched to limit and connect the pin shaft and the rod piece clamped inside.

Furthermore, the number of the fifth rods is two, and the fifth rods are obliquely arranged with the bottom plate; the second rod, the third rod and the fifth rod are connected together by a fourth pin (including one, placed parallel to the base plate). The middle section of the fourth pin shaft is provided with an external thread, the first shaft sleeve is provided with an internal thread, and the fourth pin shaft and the first shaft sleeve are matched with each other to limit and connect the pin shaft and the rod piece clamped inside. Meanwhile, the fourth pin shaft is connected with the arm support.

Furthermore, two of the combined columns (vertical to the bottom plate) are connected together through a third pin shaft (parallel to the bottom plate) to form a whole. And an external thread is processed on the third pin shaft, an internal thread is processed on the second shaft sleeve, and the third pin shaft and the second shaft sleeve are matched to limit the third pin shaft. And meanwhile, the third pin shaft is connected with the arm support oil cylinder.

Further, the fourth rod and the fifth rod are connected together by a second pin (including two, parallel to the base plate). And a second shaft sleeve is adopted for limiting connection to form a whole.

Furthermore, the truss type rotary table can be different in working range according to different specifications and models of engineering machinery, and can be adjusted in shape, size, quantity and size of the rod and the pin shaft to adapt to different working conditions.

In addition, the invention also provides engineering machinery comprising the truss type rotary table.

Further, the device comprises a truss type rotary table, a boom cylinder and a fixed rotary table. The rotary table is mounted on the fixed rotary table through the bottom plate and can freely rotate around the fixed rotary table, the arm support is connected with the truss type rotary table through a fourth pin shaft, the arm support oil cylinder is connected with the truss type rotary table through a third pin shaft, and the arm support oil cylinder are respectively connected.

The invention has the beneficial effects that: the fourth pin shaft is connected with the arm support, the third pin shaft is connected with the arm support oil cylinder, and the bottom plate is connected with the fixed rotary table. The rotary table adopts a truss-type rod as a basic structural member, and the hinge pin and the shaft sleeve are utilized for connection, fastening and limiting, so that a larger internal space can be provided, and the existence of welding residual stress is avoided. The rod piece can be designed in a modularized mode according to actual conditions, and the purposes of universalization and standardization are achieved.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention, in which:

fig. 1 is a schematic structural view of a truss-type rotary table according to the present invention.

Fig. 2 is a front view of a truss-type turntable according to the present invention.

Fig. 3 is a top view of a truss-type turntable according to the present invention.

Fig. 4 is a side view of a truss-like turret according to the invention.

Fig. 5 is a schematic view of the engineering machinery of the invention.

The corresponding part names in the figure are: the device comprises a truss type rotary table fixing rotary table 1, a boom cylinder 3, a boom 4, a base plate 10, a combined column 11, a second rod 12, a third rod 13, a first rod 14, a first pin 15, a fourth rod 16, a fifth rod 17, a second pin 18, a fourth pin 19, a third pin 110, a first shaft sleeve 111, a second shaft sleeve 112 and a baffle 113.

Detailed Description

It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict. The present invention will be described in detail below with reference to the embodiments with reference to the accompanying drawings.

Preferred embodiments of the present invention will be described in further detail with reference to fig. 1 to 5.

As shown in FIG. 1, the preferred turntable 1 (shown in FIG. 5) of the present invention comprises a base plate 10 and combination columns 11, wherein the combination columns 11 are fixed on the base plate 10 in parallel. The base plate 10 is provided with a plurality of bolt holes. The combined column 11 is provided with a pin shaft hole, a gap is arranged in the combined column, and the axis of the pin shaft hole is parallel to the top surface of the bottom plate. The first rod 14 and the second rod 12 are both provided with pin shaft holes, the hole size is the same as the pin shaft holes on the combined column 11, wherein the first rod 14 and the second rod 12 are placed inside the combined column 11, and the thickness of the two rods is equal to the size of the inner gap of the combined column. The first pin shaft 15 penetrates through the pin shaft hole to connect the three parts together, and is in limited fastening connection through the baffle plate 113. Similar structure, the pin shaft hole has all been seted up to third pole 13 and fourth pole 16, and the size is the same with the pin shaft hole on first pole 14 and the combination post 11, and first pole 14, third pole 13 and fourth pole 16 all place inside the combination post 11, are connected to together the three through second round pin axle 18 to there is second axle sleeve 112 to carry out spacing fastening connection through the screw with second round pin axle 18. Similarly, as shown in fig. 2, the fifth rod 17, the second rod 12 and the third rod 13 are provided with large pin shaft holes with the same size, and the fifth rod, the second rod 12 and the third rod 13 are connected together by a fourth pin shaft 19 and are connected by a first shaft sleeve 111 in a limiting and fastening manner. Further, as shown in fig. 3, the two combined columns 11 are connected together by a third pin 110 and are fastened by a second bushing 112 to form a whole. Further, the fourth rod 16 and the fifth rod 17 are connected together by a second pin 18 and are in a limit connection by a second bushing 112 to form a whole. The rod piece and the pin shaft form a truss structure, and the condition of welding seam cracking is avoided.

As shown in fig. 5, a pin shaft hole is formed on the arm support 4, the diameter of the pin shaft hole is equal to the outer diameter of the fourth pin shaft 19, and the pin shaft hole and the fourth pin shaft are connected together and are limited and fastened. Meanwhile, the arm support oil cylinder 3 is also provided with a pin shaft hole, the aperture size of the pin shaft hole is the same as that of the third pin shaft 110, and the pin shaft hole and the third pin shaft are connected together and are limited and fastened.

As shown in fig. 5, the invention also provides an engineering machine, which can be a concrete pump truck, a distributing boom, an automobile crane and the like. The engineering machinery comprises a fixed rotary table 2, the truss type rotary table 1, an arm support 4 and an arm support oil cylinder 3. A plurality of bolt holes are processed on the bottom plate 10 of the truss type rotary table 1, a plurality of bolt holes are also processed on the fixed rotary table 2, and the bolt holes and the fixed rotary table are connected through bolts. The truss turntable 1 is rotatable relative to the fixed turntable 2. The arm support 4 and the arm support oil cylinder 3 are arranged on the truss type rotary table 1 through a pin shaft and can perform telescopic rotation action.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way, and those skilled in the art can make many variations and modifications of the present invention without departing from the scope of the present invention as defined in the appended claims.

Claims

1. A truss-like turret characterized by: the combined column comprises a bottom plate, a combined column, a first pin shaft, a second pin shaft, a third pin shaft, a fourth pin shaft, a first rod, a second rod, a third rod, a fourth rod, a fifth rod, a first shaft sleeve and a second shaft sleeve; the combined column comprises six combined columns, gaps for mounting a first rod, a second rod, a third rod and a fourth rod are formed in the combined column, the combined columns are respectively and fixedly mounted on the bottom plate in parallel according to a certain direction, and each combined column is provided with a pin shaft hole for mounting a first pin shaft, a second pin shaft and a third pin shaft which are different in length and structure form;

the first rod, the second rod and the combined column are connected together through a first pin shaft, the first rod, the third rod and the fourth rod and the combined column are connected together through a second pin shaft, the second rod, the third rod and the fifth rod are connected together through a fourth pin shaft, and the fourth rod and the fifth rod are connected together through a second pin shaft;

the first rods comprise two rods which are arranged in parallel with the bottom plate; the two second rods are vertically arranged with the bottom plate, and the two second rods are provided with the same pin shaft holes;

the third rods are arranged obliquely at a certain angle with the bottom plate; the second pin shaft and the third rod clamped inside are in limit connection with the fourth rod;

the fifth rods comprise two rods which are obliquely arranged with the bottom plate; an external thread is processed on the middle section of the fourth pin shaft, an internal thread is processed on the first shaft sleeve, the fourth pin shaft, the third rod and the fifth rod are connected in a limiting mode, and meanwhile the fourth pin shaft and the arm frame are connected together;

two combined columns which are vertical to the bottom plate in the combined columns are connected together through a third pin shaft to form a whole; and an external thread is processed on the third pin shaft, an internal thread is processed on the second shaft sleeve, the third pin shaft and the arm support oil cylinder are matched to limit and connect the third pin shaft, and meanwhile, the third pin shaft and the arm support oil cylinder are connected together.

2. A truss turret as defined in claim 1 wherein: the fourth rod and the fifth rod are in limit connection by adopting a second shaft sleeve to form a whole.

3. A truss turret as defined in claim 1 wherein: the truss type rotary table is different in working range according to different specifications and models of engineering machinery, and the truss type rotary table is suitable for different working conditions by adjusting the shapes, sizes, quantities and sizes of the first rod, the second rod, the third rod, the fourth rod, the fifth rod, the first pin shaft, the second pin shaft, the third pin shaft and the fourth pin shaft.

4. A working machine comprising a truss turret as defined in claim 1 wherein: comprises a truss type rotary table, an arm support oil cylinder and a fixed rotary table; the truss type rotary table is installed on the fixed rotary table through the bottom plate and freely rotates around the fixed rotary table, the arm support is connected with the truss type rotary table through a fourth pin shaft, the arm support oil cylinder is connected with the truss type rotary table through a third pin shaft, and the arm support is connected with the arm support oil cylinder.