A working arm and a construction machinery vehicle

Abstract

The present application provides a working arm and a construction machinery vehicle, including: a base; a pitch angle adjustment mechanism, one end of which is hinged to the base; a telescopic arm mechanism, one end of which is hinged to the pitch angle adjustment mechanism; and an end effector, one end of which is hinged to the other end of the telescopic arm mechanism; the pitch angle adjustment mechanism includes: a first connecting rod, one end of which is hinged to the base; a second connecting rod, one end of which is hinged to the base; a third connecting rod, one end of which is hinged to the other end of the first connecting rod and the other end is hinged to the other end of the second connecting rod; a first hydraulic cylinder, one end of which is hinged to the first connecting rod; the piston rod of the first hydraulic cylinder is hinged to the third connecting rod; and a second hydraulic cylinder, one end of which is hinged to the other end of the second connecting rod; the piston rod of the second hydraulic cylinder is hinged to the telescopic arm mechanism. The working arm of the present application adjusts the angle between the telescopic arm mechanism and the ground through the pitch angle adjustment mechanism, with a larger adjustable range, and the minimum pitch angle can reach -18°.

Description

Technical Field

[0001] The present application belongs to the technical field of engineering machinery equipment, and more specifically, relates to a working arm and an engineering machinery vehicle. Background Art

[0002] The prying trolley is a mechanized equipment used to remove the roof and broken and unstable pumice on both sides of the work site during tunnel excavation and mining operations. As the country pays more and more attention to production safety and ensures the safety of construction workers, mining enterprises have gradually eliminated manual prying and used prying trolleys to complete the prying and risk removal work. The working arm of the prying trolley is the main component to complete the various functions of prying and risk removal. As my country's demand for resources and energy increases, the mining depth of various mines gradually increases, the tunnel space is limited, and the requirements for the working range and impact resistance of the prying working arm are getting higher and higher. The working arm of the current prying trolley generally adopts a multi-degree-of-freedom mechanism of fifteen or sixteen linkages, and the base of the working arm mostly adopts a four-bar mechanism. The four-bar mechanism is used to adjust the pitch angle of the working arm. The working arm of this structure has limited activity space and generally has the problem of insufficient working range, especially the minimum pitch angle usually does not meet the operation requirements. Summary of the invention

[0003] The purpose of the embodiments of the present application is to provide a working arm and an engineering machinery vehicle to solve the technical problem of insufficient working range of the working arm in the prior art.

[0004] To achieve the above-mentioned object, a first aspect of the present application provides a working arm, comprising: a base;

[0005] A pitch angle adjustment mechanism, one end of which is hinged on the base;

[0006] a telescopic arm mechanism, one end of which is hinged to the pitch angle adjustment mechanism; and

[0007] An end actuator, one end of which is hinged to the other end of the telescopic arm mechanism;

[0008] The pitch angle adjustment mechanism comprises:

[0009] A first connecting rod, one end of which is hinged on the base;

[0010] A second connecting rod, one end of which is hinged on the base;

[0011] A third connecting rod, one end of which is hinged to the other end of the first connecting rod, and the other end of which is hinged to the other end of the second connecting rod;

[0012] A first hydraulic cylinder, one end of which is hinged to the first connecting rod; a piston rod of the first hydraulic cylinder is hinged to the third connecting rod; and

[0013] A second hydraulic cylinder, one end of which is hinged to the other end of the second connecting rod; the piston rod of the second hydraulic cylinder is hinged to the telescopic arm mechanism.

[0014] Further, the telescopic arm mechanism includes:

[0015] A first telescopic arm;

[0016] A second telescopic arm, which is connected to the first telescopic arm by a sliding pair; and

[0017] A third hydraulic cylinder, one end of which is hinged to the first telescopic arm, and the piston rod of the third hydraulic cylinder is hinged to the second telescopic arm.

[0018] Further, the end effector includes:

[0019] An actuating working arm, one end of which is hinged to one end of the second telescopic arm;

[0020] A rotating oil cylinder, one end of which is hinged to the actuating working arm; and

[0021] An actuating component, one end of which is fixedly connected to the rotating oil cylinder.

[0022] Further, it further includes a fourth hydraulic cylinder, one end of the fourth hydraulic cylinder is hinged to the second telescopic arm, and the piston rod of the fourth hydraulic cylinder is hinged to the actuating working arm.

[0023] Further, the end effector further includes:

[0024] A fifth hydraulic cylinder, one end of which is hinged to the actuating working arm;

[0025] A rotating oil cylinder connection assembly, one end of which is hinged to the actuating working arm, and the other end is hinged to the piston rod of the fifth hydraulic cylinder; the rotating oil cylinder connection assembly is hinged to the rotating oil cylinder.

[0026] Further, both ends of the rotating oil cylinder are fixedly connected to the actuating component through a connecting piece.

[0027] Further, the actuating component is any one of a percussion hammer, a bucket, and a lifting ring.

[0028] In the second aspect of the present application, there is provided a construction machinery vehicle, on which a working arm as described in any one of the above is installed.

[0029] Compared with the prior art, the present application has the following technical effects:

[0030] A working arm of the present application adjusts the angle between the telescopic arm mechanism and the ground through a pitch angle adjustment mechanism, that is, the size of the pitch angle. Compared with the four-link adjustment structure of the traditional working arm, the adjustable range of the pitch angle adjustment mechanism of the present application is larger, and the minimum pitch angle of the telescopic arm mechanism can reach -18°. Brief Description of the Drawings

[0031] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0032] Figure 1 It is a schematic diagram of the overall structure of a working arm provided by an embodiment of the present application;

[0033] Figure 2 It is a schematic diagram of the working state when the angle between the working arm provided by the embodiment of the present application and the ground is the smallest;

[0034] Figure 3 It is a schematic diagram of the working state when the angle between the working arm provided by the embodiment of the present application and the ground is the largest.

[0035] Among them, the reference numerals in the drawings are as follows:

[0036] 1. Base, 2. Pitch angle adjustment mechanism, 3. First connecting rod, 4. Third connecting rod, 5. Second connecting rod, 6. First hydraulic cylinder, 7. First telescopic arm, 8. Second telescopic arm, 9. Third hydraulic cylinder, 10. Second hydraulic cylinder, 11. Execution working arm, 12. Fourth hydraulic cylinder, 13. Fifth hydraulic cylinder, 14. End execution mechanism, 15. Rotating oil cylinder connection assembly, 16. Rotating oil cylinder, 17. Connecting piece, 18. Execution component. Detailed Embodiments

[0037] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present application more clearly understood, the following further details the present application in conjunction with the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0038] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0039] It should be understood that the orientation or positional relationship indicated by terms such as "length", "upper", "lower", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying 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 a limitation to the present application.

[0040] In addition, the terms "first", "second", "third", "fourth", "fifth" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first", "second", "third", "fourth", "fifth" may explicitly or implicitly include one or more of such features. In the description of the present application, the meaning of "a plurality" is two or more unless otherwise specifically defined.

[0041] Please refer to Figures 1 to 3 , and a working arm structure provided by an embodiment of the present application will be described hereinafter.

[0042] A working arm according to an embodiment of the present application includes a base 1, a pitch angle adjustment mechanism 2, a telescopic arm mechanism, and an end effector 14. One end of the pitch angle adjustment mechanism 2 is hinged to the base 1; one end of the telescopic arm mechanism is hinged to the pitch angle adjustment mechanism 2; one end of the end effector 14 is hinged to the other end of the telescopic arm mechanism.

[0043] The pitch angle adjustment mechanism according to an embodiment of the present application includes a first connecting rod 3, a second connecting rod 5, a third connecting rod 4, a first hydraulic cylinder 6, and a second hydraulic cylinder 10. The lower end of the first connecting rod 3 is hinged to the base 1; the lower end of the second connecting rod 5 is hinged to the base 1; the third connecting rod 4 is in a V shape, one end of which is hinged to the upper end of the first connecting rod 3, and the other end is hinged to the upper end of the second connecting rod 5; one end of the first hydraulic cylinder 6 is hinged to the ear seat on the inner side of the first connecting rod 3; the piston rod of the first hydraulic cylinder 6 is hinged to the middle part of the third connecting rod 4; one end of the second hydraulic cylinder 10 is hinged to the other end of the second connecting rod 5, that is, the upper end of the second connecting rod 5 is simultaneously hinged to the third connecting rod 4 and the second hydraulic cylinder 10; the piston rod of the second hydraulic cylinder 10 is hinged to the lower ear seat of the telescopic arm mechanism. The middle part of the third connecting rod 4 is simultaneously hinged to the piston rod of the first hydraulic cylinder 6 and one end of the telescopic arm mechanism.

[0044] The four-link adjustment structure of the traditional working arm has a relatively small pitch angle adjustment range. The lowest pitch angle of the telescopic arm mechanism can only reach about -10°. A working arm according to an embodiment of the present application adjusts the angle between the telescopic arm mechanism and the ground, that is, the size of the pitch angle, through a pitch angle adjustment mechanism. The adjustable range of the pitch angle adjustment mechanism in the embodiment of the present application is larger, and the minimum pitch angle of the telescopic arm mechanism can reach -18°.

[0045] Further, the telescopic arm mechanism of the embodiment of the present application includes a first telescopic arm 7, a second telescopic arm 8, and a third hydraulic cylinder 9. The second telescopic arm 8 is connected to the first telescopic arm 7 by a sliding pair; one end of the third hydraulic cylinder 9 is hinged to the ear seat on the lower side of the first telescopic arm 7, and the piston rod of the third hydraulic cylinder 9 is hinged to the hinge plate on the lower side of the second telescopic arm 8. By controlling the stroke of the third hydraulic cylinder 9, the relative movement between the first telescopic arm 7 and the second telescopic arm 8 is controlled, thereby adjusting the telescopic movement of the telescopic arm mechanism, and further adjusting the working range of the telescopic arm mechanism in the horizontal direction.

[0046] Further, the end effector 14 of the embodiment of the present application includes an execution working arm 11, a rotary oil cylinder 16, and an execution component 18. One end of the execution working arm 11 is hinged to one end of the second telescopic arm 8; one end of the rotary oil cylinder 16 is hinged to the execution working arm 11; one end of the execution component 18 is fixedly connected to the rotary oil cylinder 16. Specifically, both ends of the rotary oil cylinder 16 and the execution component 18 are fixedly connected through a connecting member 17. For example, they can be fixedly connected by bolts. The execution component 18 is driven to rotate by the rotary oil cylinder 16. The execution component 18 in the embodiment of the present application can be selected and adapted according to the operation type. For example, it can be a percussion hammer, a bucket, a lifting ring, etc.

[0047] Further, the working arm of the embodiment of the present application further includes a fourth hydraulic cylinder 12. One end of the fourth hydraulic cylinder 12 is hinged to the hinge plate on the lower side of the second telescopic arm 8, and the piston rod of the fourth hydraulic cylinder 12 is hinged to the ear seat on the lower side of the execution working arm 11. By controlling the stroke of the fourth hydraulic cylinder 12, the angle between the execution working arm 11 and the second telescopic arm 8 can be adjusted, thereby adjusting the working range.

[0048] Further, the end effector 14 of the embodiment of the present application further includes a fifth hydraulic cylinder 13 and a rotary oil cylinder connection assembly 15. One end of the fifth hydraulic cylinder 13 is hinged to the ear seat on the lower side of the execution working arm 11; one end of the rotary oil cylinder connection assembly 15 is hinged to the execution working arm 11, and the other end is hinged to the piston rod of the fifth hydraulic cylinder 13; and the rotary oil cylinder connection assembly 15 is hinged to the rotary oil cylinder 16, that is, one end of the rotary oil cylinder connection assembly 15 is simultaneously hinged to the piston rod of the fifth hydraulic cylinder 13 and the rotary oil cylinder 16. By controlling the stroke of the fifth hydraulic cylinder 13, the angle between the execution component 18 and the execution working arm 11 can be adjusted, thereby adjusting the working range of the execution component 18.

[0049] Figure 2 、 Figure 3 shows two working states of the working arm provided by the embodiment of the present application. In Figure 2 , the first hydraulic cylinder 6 extends, driving the first connecting rod 3, the third connecting rod 4, and the second connecting rod 5 to rotate clockwise. At the same time, the second hydraulic cylinder 10 contracts, driving the first telescopic working arm 7 and the second telescopic arm 8 to swing clockwise. Under the combined action of the two, the executing component 18 can reach Figure 2 the lowest depression angle shown.

[0050] In Figure 3 , the first hydraulic cylinder 6 contracts, driving the first connecting rod 3, the third connecting rod 4, and the second connecting rod 5 to rotate counterclockwise. At the same time, the second hydraulic cylinder 10 extends, driving the first telescopic working arm 7 and the second telescopic arm 8 to swing counterclockwise. Under the combined action of the two, the executing component 18 can be adjusted from Figure 2 the lowest depression angle shown to Figure 3 the highest elevation angle state shown.

[0051] The embodiment of the present application also provides a construction machinery vehicle, on which the working arm of the embodiment of the present application is installed. According to different types of the executing component 18, the construction machinery vehicle of the embodiment of the present application can be different types of construction machinery vehicles. For example, when the executing component 18 is a chipping hammer, the construction machinery vehicle of the embodiment of the present application is a scaling jumbo; when the executing component 18 is a bucket, the construction machinery vehicle of the embodiment of the present application is an excavator; when the executing component 18 is a lifting ring, the construction machinery vehicle of the embodiment of the present application is a crane.

[0052] The above embodiments only represent several implementation manners of the present application, and the description thereof is relatively specific and detailed, but it should not be construed as a limitation to the patent scope of the present application. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present application, several deformations and improvements can still be made, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent of the present application shall be subject to the appended claims.

Claims

1. A working arm, characterized in that, Comprising: A base; An elevation angle adjusting mechanism, one end of which is hinged to the base; A telescopic arm mechanism, one end of which is hinged to the elevation angle adjusting mechanism; And An end effector, one end of which is hinged to the other end of the telescopic arm mechanism; The elevation angle adjusting mechanism includes: A first connecting rod, one end of which is hinged to the base; A second connecting rod, one end of which is hinged to the base; A third connecting rod, one end of which is hinged to the other end of the first connecting rod and the other end of which is hinged to the other end of the second connecting rod; A first hydraulic cylinder, one end of which is hinged to the first connecting rod; the piston rod of the first hydraulic cylinder is hinged to the third connecting rod; and A second hydraulic cylinder, one end of which is hinged to the other end of the second connecting rod; the piston rod of the second hydraulic cylinder is hinged to the telescopic arm mechanism; The telescopic arm mechanism includes: A first telescopic arm; A second telescopic arm, which is connected to the first telescopic arm by a sliding pair; and A third hydraulic cylinder, one end of which is hinged to the first telescopic arm and the piston rod of the third hydraulic cylinder is hinged to the second telescopic arm; The end effector includes: An operating arm, one end of which is hinged to one end of the second telescopic arm; A rotating oil cylinder, one end of which is hinged to the operating arm; and An operating component, one end of which is fixedly connected to the rotating oil cylinder; A fourth hydraulic cylinder, one end of which is hinged to the second telescopic arm and the piston rod of the fourth hydraulic cylinder is hinged to the operating arm.

2. The working arm according to claim 1, characterized in that, The end effector further includes: A fifth hydraulic cylinder, one end of which is hinged to the operating arm; A rotating oil cylinder connection assembly, one end of which is hinged to the operating arm and the other end of which is hinged to the piston rod of the fifth hydraulic cylinder; the rotating oil cylinder connection assembly is hinged to the rotating oil cylinder.

3. A working arm as claimed in claim 1, wherein, Both ends of the rotating oil cylinder are fixedly connected to the operating component through a connecting piece.

4. A working arm according to any one of claims 1 to 3, characterized in that, The operating component is any one of a percussion hammer, a bucket, and a lifting ring.

5. An engineering machinery vehicle, characterized in that, A working arm according to any one of claims 1-4 is installed on the construction machinery vehicle.

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