CN210118146U

CN210118146U - Working arm structure for arch frame trolley

Info

Publication number: CN210118146U
Application number: CN201920794984.3U
Authority: CN
Inventors: 张镇; 邹海波; 刘建春; 孙晓亮
Original assignee: JIANGXI XINTONG MACHINERY MANUFACTURING Co Ltd
Current assignee: JIANGXI XINTONG MACHINERY MANUFACTURING Co Ltd
Priority date: 2019-05-29
Filing date: 2019-05-29
Publication date: 2020-02-28
Anticipated expiration: 2029-05-29

Abstract

The utility model discloses a work arm structure for on bow member platform truck, it includes base, main arm and the main chuck that is used for the centre gripping work piece, its characterized in that: the main arm comprises an outer tube and an inner tube, the lower end of the outer tube is in running fit with the base, a driving mechanism used for driving the outer tube to rotate is arranged on the base, the inner tube is in sliding fit with the inner tube, the upper end of the inner tube, which is far away from the base, is exposed out of the outer tube, the main chuck is in running fit with the upper end of the inner tube, and power arms used for abutting against a workpiece and pushing the workpiece to be lifted are respectively installed on two sides of the outer tube. The utility model provides a work arm structure for on bow member platform truck, it requires low therefore material cost little to the performance of material to the bearing capacity is big, control accuracy is high.

Description

Working arm structure for arch frame trolley

Technical Field

The utility model relates to a technical field of bow member platform truck specifically is a work arm structure for on the bow member platform truck.

Background

The arch frame trolley is heavy machinery which is applied more in tunnel engineering, and the prior arch frame trolley generally needs to be matched with a plurality of mechanical arms in a cooperative way in the operation process. However, the existing mechanical arm needs to be clamped and lifted to the arch frame and lift an operator on the working platform to the working height, so that the requirement on the load of the mechanical arm is high, the lifting stroke is long, and the precision of the mechanical arm is difficult to guarantee. In other words, the arch trolley in the prior art can not guarantee the installation accuracy of the arch only by the lifting mechanical arm in the operation process.

Of course, a person skilled in the art will also consider the possibility of installing a fine adjustment work arm on the basis of an existing robot arm. The working arm generally adopts the existing conventional multi-joint linkage manipulator, and each joint is driven by an air cylinder or a joint motor respectively, so that the alignment of the arch frame is realized. However, this conventional work arm requires articulated control, and therefore has high requirements for a control system and great control difficulty. Meanwhile, the weight of the arch frame in the tunnel engineering is generally large, so that the weight of the arch frame can directly act on each key of the manipulator, and the requirement on the bearing of the joint of the existing manipulator is high. Therefore, the conventional joint type mechanical arm cannot be effectively applied to the arch frame trolley to be used as a working arm. In addition, the selection of high-performance material as the material of the manipulator can increase the bearing capacity of the manipulator, but the manufacturing cost of the manipulator will be greatly increased, which obviously does not meet the requirement of practical construction.

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at solving one of the technical problem in the correlation technique to a certain extent at least: a work arm structure for an arch support trolley is provided, which has low requirements for material performance, low material cost, large bearing capacity and high control precision.

Therefore, an object of the utility model is to provide a work arm structure for on bow member platform truck, it includes base, main arm and the main chuck that is used for the centre gripping work piece, its characterized in that: the main arm comprises an outer tube and an inner tube, the lower end of the outer tube is in running fit with the base, a driving mechanism used for driving the outer tube to rotate is arranged on the base, the inner tube is in sliding fit with the inner tube, the upper end of the inner tube, which is far away from the base, is exposed out of the outer tube, the main chuck is in running fit with the upper end of the inner tube, and power arms used for abutting against a workpiece and pushing the workpiece to be lifted are respectively installed on two sides of the outer tube.

According to the utility model discloses an example, the power arm is two, and two power arms are located the both sides of main arm respectively.

According to an example of the present invention, the main chuck is rotatably fitted to the upper end of the inner tube through a rotating shaft, and the axis of the rotating shaft is perpendicular to the plane formed by the central axes of the two power arms.

According to the utility model discloses an example, the power arm includes support section and movable segment, the lower extreme of support section is connected on the outer tube, movable segment along the length direction sliding fit who supports the section on supporting the section, the upper end of movable segment is equipped with the bracket that leans on with the work piece counterbalance, be equipped with the driver that is used for driving movable segment on the support section.

According to the utility model discloses an example, the support section is rectangular shape structure, the lower extreme of support section passes through the lateral wall fixed connection of connecting plate with the outer tube, the activity section cover support section outside and with support section sliding fit.

And a reset cable is arranged between the power arm and the main arm, one end of the reset cable is connected with the part of the inner tube positioned outside the outer tube, and the other end of the reset cable is connected with the movable section of the power arm.

The driver is a hydraulic cylinder, and a cylinder body and a piston rod of the hydraulic cylinder are respectively connected with the supporting section and the movable section.

The bracket comprises a bottom plate fixed on the movable section, two vertical plates are arranged on the bottom plate, an open slot used for limiting a workpiece is formed between the two vertical plates, when the workpiece is clamped on the main chuck, the part of the workpiece corresponding to the bracket is positioned in the open slot, and the workpiece is in sliding fit with the open slot along with the lifting of the movable section.

The lower end of the outer pipe is hinged with the base, so that the outer pipe swings in the vertical direction.

The driving mechanism is a swing hydraulic cylinder, one end of the swing hydraulic cylinder is hinged with the outer side wall of the outer pipe, and the other end of the swing hydraulic cylinder is hinged with the base.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

The technical scheme has the following advantages or beneficial effects: firstly, the main arm is used for clamping a workpiece and the two power arms at two sides are used for lifting the workpiece, so the bearing capacity of the power arm driven by hydraulic pressure is far greater than that of a conventional joint manipulator, and meanwhile, the two power arms are matched through the expansion amount, the adjustment of the angle and the position of an arch frame can be realized, so the adjustment precision is good, secondly, a reset cable is designed, so that an inner pipe on the main arm can be driven to be reset forcibly by using a movable section on the power arm under the condition that the inner pipe on the main arm cannot be reset under the action of gravity, the integral reliability of equipment is improved, secondly, a bracket is arranged at the upper end of the power arm, so the workpiece can be lifted effectively, and the workpiece is prevented from slipping off from the power arm along the thickness direction of the workpiece, and finally, compared with the conventional mechanical arm, the mechanical arm of the utility model has no requirement on, meanwhile, the whole structure is simple, and only the cooperative fit between the drivers on the two power arms needs to be controlled, so that the control system is simple, the adjustment precision is high, and finally the cost of the whole equipment is low.

Drawings

Fig. 1 is an isometric view of a working arm according to the present invention.

Fig. 2 is a front view of the working arm of the present invention.

Fig. 3 is a schematic side view of the working arm of the present invention.

Fig. 4 is a schematic sectional view taken along the direction "a-a" in fig. 3.

The device comprises a base 1, a base 2, a main arm 2.1, an outer tube 2.2, an inner tube 3, a main chuck 4, a driving mechanism 5, a power arm 5.1, a supporting section 5.2, a movable section 6, a rotating shaft 7, a bracket 7.1, a bottom plate 7.2, a vertical plate 7.3, an open slot 8, a driver 9, a connecting plate 10, a reset cable 11, an upper pull ring 12 and a lower pull ring.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention.

A work arm structure for use on an arch trolley according to an embodiment of the present invention will be described in detail below with reference to the accompanying drawings.

The first embodiment of the working arm is as follows:

the utility model provides a work arm structure for on bow member platform truck, it includes base 1, main arm 2 shown as figure 1 and the main chuck 3 that is used for the centre gripping work piece, the base is the distal end position that is used for installing lifting mechanism on the bow member platform truck, and this base 1 sets up with work platform is adjacent. The main arm 2 comprises an outer pipe 2.1 and an inner pipe 2.2, the outer pipe 2.1 is preferably a square pipe, the cross section of the inner pipe 2.2 is matched with that of the outer pipe 2.1, and the lower end of the outer pipe 2.1 is hinged with the base 1 in the vertical direction, so that the outer pipe 2.1 can swing to be in a horizontal state or a vertical state. The base 1 is provided with a driving mechanism 4 for driving the outer tube 2.1 to rotate, specifically, the driving mechanism can be a swing hydraulic cylinder, two ends of the swing hydraulic cylinder are respectively hinged with the outer side walls of the base 1 and the outer tube, and therefore the outer tube 2.1 is driven to swing along the vertical direction through the expansion and contraction of the swing hydraulic cylinder and can be suspended at any included angle. The inner tube 2.2 is in sliding fit with the outer tube 2.1, the upper end of the inner tube 2.2, which is far away from the base 1, is exposed out of the outer tube 2.1, the main chuck 3 is in running fit with the upper end of the inner tube 2.2, two power arms 5 which are used for abutting against a workpiece and pushing the workpiece to be lifted are respectively installed on two sides of the outer tube 2.1, and the two power arms 5 are preferably symmetrically arranged.

The second embodiment of the working arm structure:

the basic structure is the same as the working arm structure in the first embodiment, except that: the number of power arms may be multiple, e.g. 3, 4, 5. This increases the load-bearing capacity of the arch. Of course, coordination among the plurality of power arms is required through a control system.

The third embodiment of the working arm structure:

the basic structure is the same as the working arm structure in the first embodiment, except that: the outer pipe 2.1 is a pipe with any non-circular cross section, such as a pipe with a hexagonal prism structure or a pipe with a triangular prism structure. Because the utility model discloses in the application outer tube 2.1 and inner tube 2.2 need follow endwise slip, therefore the two circumferential direction is the best carries on spacingly. Therefore, the circumferential limiting effect can be achieved only by adopting non-circular pipe fittings, and the insertion limiting can be performed on the basis of the circular pipe through the pin shaft, so that the limitation is allowable. However, the utility model discloses the service environment is heavy machinery, and engineering safety and mechanical strength still need be considered to it. Therefore, the symmetrical pipe fitting structure is adopted once, and the square pipe is adopted in combination with the comprehensive performance.

The fourth embodiment of the working arm structure:

the basic structure is the same as the working arm structure in the first embodiment, except that: the lower end of the outer pipe 2.1 is hinged with the base through a shaft, and the effective swing angle of the outer pipe 2.1 is mostly 30-120 degrees, and theoretically, the swing angle of the outer pipe 2.1 is from 0-180 degrees.

The fourth embodiment of the working arm structure:

the basic structure is the same as the working arm structure in the first embodiment, except that: the main chuck 3 is in running fit with the upper end of the inner tube 2.2 through a rotating shaft 6, and the axis of the rotating shaft 6 is perpendicular to the plane formed by the central axes of the two power arms 5. As shown in fig. 2 and 3, the two power arms 5 are symmetrically arranged on both sides of the main arm, so that the plane formed by the two power arms is perpendicular to the axis of the rotating shaft 6. Thereby allowing the main jaw 3 to swing in this plane.

Fifth embodiment of the working arm structure:

the basic structure is the same as the working arm structure in the first embodiment, except that: the power arm 5 comprises a supporting section 5.1 and a movable section 5.2, the lower end of the supporting section 5.1 is connected to the outer tube 2.1, the movable section 5.2 is in sliding fit with the supporting section 5.1 along the length direction of the supporting section 5.1, a bracket 7 abutting against a workpiece is arranged at the upper end of the movable section 5.2, and a driver 8 for driving the movable section 5.2 is arranged on the supporting section 5.1. Specifically, as shown in fig. 1 to 4, the movable section 5.2 is a sleeve with an open end and a sealed end, and the open end of the sleeve is sleeved on the supporting section 5.1 and is in sliding fit with the supporting section 5.1. The bracket 7 is fixedly mounted at the end of the sealed end of the movable section 5.2.

Sixth embodiment of the working arm structure:

the basic structure is the same as the fifth embodiment of the working arm structure, and the difference is that: the support section 5.1 is a rectangular square bar, the lower end of the support section 5.1 is fixedly connected with the outer side wall of the outer tube 2.1 through a connecting plate 9, and the shape of the inner cavity of the movable section 5.2 is matched with that of the support section 5.1, so that the movable section 5.2 is sleeved outside the support section 5.1 and is in sliding fit with the support section 5.1.

The seventh embodiment of the working arm structure:

the basic structure is the same as the fifth embodiment of the working arm structure, and the difference is that: a reset guy cable 10 is arranged between the power arm 5 and the main arm 2, one end of the reset guy cable 10 is connected with the part of the inner tube 2.2 outside the outer tube 2.1, and the other end of the reset guy cable 10 is connected with the movable section 5.2 of the power arm 5.

Specifically, the part of the inner tube 2.2, which is located outside the outer tube 2.1, is provided with an upper pull ring 11, a lower pull ring 12 is fixed at a position of the movable section 5.2 of the power arm, which is close to the lower end, and two ends of the reset cable 10 are respectively locked on the upper pull ring 11 and the lower pull ring 12.

Eighth embodiment of the working arm structure:

the basic structure is the same as the fifth embodiment of the working arm structure, and the difference is that: the actuator 8 shown in fig. 4 is a hydraulic cylinder, and the cylinder body and the piston rod of the hydraulic cylinder are respectively connected with the support section 5.1 and the movable section 5.2. Of course, the drive 8 may be a mechanical mechanism formed by an air cylinder or a worm gear, and these may be selected according to different practical application environments.

Ninth embodiment of the working arm structure:

the basic structure is the same as the fifth embodiment of the working arm structure, and the difference is that: in order to avoid the workpiece from sideslipping when the power arm 5 abuts against the workpiece, the bracket 7 is required to limit the workpiece along the width direction of the workpiece. Specifically, the bracket 7 includes a bottom plate 7.1 fixed on the movable section 5.2, two vertical plates 7.2 are arranged on the bottom plate 7.1, an open slot 7.3 used for limiting a workpiece is formed between the two vertical plates 7.2, when the workpiece is clamped on the main chuck 3, a part of the workpiece corresponding to the bracket 7 is located in the open slot 7.3, and the workpiece is in sliding fit with the open slot 7.3 along with the lifting of the movable section 5.2.

As shown in fig. 1, the vertical plate 7.2 is an L-shaped structure, a horizontal portion of the L-shaped vertical plate 7.2 is attached to the bottom plate 7.1 and fixed by a rivet, or locked by a fastening screw, so that the L-shaped vertical plate 7.2 is fixed on the bottom plate 7.1 and a vertical portion of the vertical plate 7.2 extends to the bottom plate 7.1, and an open slot 7.3 matched with a workpiece is formed between the two vertical plates 7.2.

It should be noted that, in the description of the present invention, it is to be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate the orientation or positional relationship indicated based on the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present application, unless expressly stated or limited otherwise, the first feature may be directly on or directly under the second feature or indirectly via intermediate members. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

Although embodiments of the present invention have been shown and described, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art without departing from the scope of the present invention.

Various alterations and modifications will no doubt become apparent to those skilled in the art after having read the above description. It is therefore intended that the appended claims be interpreted as covering all alterations and modifications as fall within the true spirit and scope of the invention. Any and all equivalent ranges and contents within the scope of the claims should be considered to be within the intent and scope of the present invention.

Claims

1. The utility model provides a work arm structure for on bow member platform truck, it includes base (1), main arm (2) and main chuck (3) that are used for the centre gripping work piece, its characterized in that: the main arm (2) comprises an outer tube (2.1) and an inner tube (2.2), the lower end of the outer tube (2.1) is in running fit with the base (1), a driving mechanism (4) used for driving the outer tube (2.1) to rotate is arranged on the base (1), the inner tube (2.2) is in running fit with the outer tube (2.1), the upper end, deviating from the base (1), of the inner tube (2.2) is exposed out of the outer tube (2.1), the main chuck (3) is in running fit with the upper end of the inner tube (2.2), and power arms (5) used for abutting against a workpiece and pushing the workpiece to raise are respectively installed on two sides of the outer tube (2.1).

2. A work arm structure for an arch trolley according to claim 1, wherein: the two power arms (5) are respectively arranged on two sides of the main arm (2).

3. A work arm structure for an arch trolley according to claim 2, wherein: the main chuck (3) is in running fit with the upper end of the inner pipe (2.2) through a rotating shaft (6), and the axis of the rotating shaft (6) is perpendicular to a plane formed by the central axes of the two power arms (5).

4. A work arm structure for an arch trolley according to claim 1, wherein: the power arm (5) is including supporting section (5.1) and activity section (5.2), the lower extreme of supporting section (5.1) is connected on outer tube (2.1), length direction sliding fit that activity section (5.2) were followed to support section (5.1) is on supporting section (5.1), the upper end of activity section (5.2) is equipped with bracket (7) that leans on with the work piece counterbalance, be equipped with driver (8) that are used for driving activity section (5.2) on supporting section (5.1).

5. A work arm structure for an arch trolley according to claim 4, wherein: the support section (5.1) is of a long strip-shaped structure, the lower end of the support section (5.1) is fixedly connected with the outer side wall of the outer tube (2.1) through a connecting plate (9), and the movable section (5.2) is sleeved outside the support section (5.1) and is in sliding fit with the support section (5.1).

6. A work arm structure for an arch trolley according to claim 4, wherein: a reset guy cable (10) is arranged between the power arm (5) and the main arm (2), one end of the reset guy cable (10) is connected with the part of the inner tube (2.2) which is positioned outside the outer tube (2.1), and the other end of the reset guy cable (10) is connected with the movable section (5.2) of the power arm (5).

7. A working arm structure for an arch trolley according to any of claims 4 to 6, wherein: the driver (8) is a hydraulic cylinder, and a cylinder body and a piston rod of the hydraulic cylinder are respectively connected with the supporting section (5.1) and the movable section (5.2).

8. A working arm structure for an arch trolley according to any of claims 4 to 6, wherein: bracket (7) are including fixing bottom plate (7.1) on activity section (5.2), be equipped with two riser (7.2) on bottom plate (7.1), form open slot (7.3) that are used for spacing work piece between two riser (7.2), when the work piece centre gripping on main chuck (3) the part that the work piece is located bracket (7) and corresponds is located open slot (7.3), just the work piece along with the lift of activity section (5.2) with open slot (7.3) sliding fit.

9. A work arm structure for an arch trolley according to claim 1, wherein: the lower end of the outer pipe (2.1) is hinged with the base (1) so that the outer pipe (2.1) swings in the vertical direction.

10. A work arm structure for an arch trolley in accordance with claim 9, wherein: the driving mechanism (4) is a swing hydraulic cylinder, one end of the swing hydraulic cylinder is hinged with the outer side wall of the outer pipe (2.1), and the other end of the swing hydraulic cylinder is hinged with the base (1).