Telescopic arm of loading machine and telescopic arm loading machine thereof

Abstract

The loader telescopic arm and the telescopic arm loader comprise a front frame assembly, the upper end of the front frame assembly is connected with a telescopic large arm in a hinged mode, the telescopic large arm is of a hollow tubular structure, a telescopic small arm is movably arranged in the telescopic large arm, and one end of the telescopic small arm stretches out of the open end of the telescopic large arm; a telescopic arm oil cylinder is further arranged above the telescopic large arm and the telescopic small arm, and the two ends of the telescopic arm oil cylinder are connected with the telescopic large arm and the telescopic small arm in a hinged mode respectively; the telescopic arm is of a sleeve arm structure, nylon plates are adopted for limiting friction, a telescopic oil cylinder controls reciprocating motion of the telescopic arm, a working device bucket oil cylinder is internally arranged, the oil cylinder is protected, the abrasion degree is reduced, connecting rods and rocker arms form a four-connecting-rod mechanism, the tipping bucket angle is large, and operation under various working conditions is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of loader equipment, in particular to a loader telescopic arm and a telescopic arm loader. Background Art

[0002] In the course of China's rapid development in modern times, loaders have developed rapidly and are widely used in various processing, construction, and agriculture. However, due to the limitations of the use of loaders, the height and use distance are restricted. Combining the characteristics of cranes, a new type of loader telescopic arm has been developed. The distance of the working device can be changed through the structure of the large and small sleeves of the telescopic working arm, and remote operation and lifting operations can be achieved. However, the loader telescopic arm is mostly used for construction site operations. It is large in size, inconvenient for small-scale operations, and easy to tilt. The operation stability is poor, and the travel is transmitted by mechanical shafts, with low transmission efficiency and easy wear. Utility Model Content

[0003] One advantage of the utility model is that it provides a loader telescopic arm, which combines the characteristics of a small loader and a crane and is designed to be fully hydraulically controlled, thereby improving transmission efficiency and operating stability.

[0004] One advantage of the utility model is that it provides a telescopic arm of the loader, and the width of the whole vehicle is limited, so it can conveniently pass through various narrow areas, has a moderate wheelbase, and a small turning radius, which is convenient for operating in a small range.

[0005] One advantage of the utility model is that it provides a telescopic arm of a loader. The telescopic arm is a sleeve arm structure and adopts nylon plate limiting friction. The telescopic cylinder controls the reciprocating motion of the telescopic arm. The working device bucket cylinder is built-in to protect the cylinder and reduce the degree of wear. The connecting rod rocker arm forms a four-bar mechanism, and the tipping angle is large to achieve various working conditions.

[0006] One advantage of the utility model is that it provides a telescopic arm of a loader, in which the entire vehicle is hydraulically controlled, dual pumps are linked, the main pump controls walking, and the sub-pump controls hydraulic components, which jointly realize the operating function. The working device places the hydraulic pipeline externally, links the telescopic arm to move forward and backward, and adds protective measures, which reduces oil pipe wear and facilitates inspection and maintenance.

[0007] One advantage of the utility model is that it provides a telescopic arm for a loader, wherein a spare oil circuit and a hydraulic quick change are added to the front section of the telescopic arm, so as to facilitate the interchangeability of various auxiliary tools and achieve the effect of one machine with multiple uses.

[0008] One advantage of the utility model is that it provides a loader telescopic arm, whose control mechanism is electrically controlled and adopts an electrically controlled proportional multi-way valve, integrating all functions at the position of the operating handle, realizing the characteristic of one handle controlling the functions of the entire vehicle, facilitating the driver's operation, greatly saving operation time, improving operation comfort, and improving the working efficiency of the entire vehicle.

[0009] In order to achieve at least one of the above advantages of the utility model, the utility model provides a loader telescopic arm, including a front frame assembly, the upper end of the front frame assembly is connected to a telescopic arm in an articulated manner, the telescopic arm is a hollow tubular structure, a telescopic small arm is movably arranged inside the telescopic arm, and one end of the telescopic small arm extends from the open end of the telescopic arm;

[0010] A telescopic arm oil cylinder is also arranged above the telescopic boom and the telescopic arm, and the two ends of the telescopic arm oil cylinder are respectively connected to the telescopic boom and the telescopic arm in an articulated manner;

[0011] The telescopic arm is a tubular structure with a hollow interior. The front end of the telescopic arm is fixedly connected to the telescopic forearm, and the front end of the telescopic forearm is hingedly connected to the quick changer. An ear plate is fixedly installed inside the telescopic arm, and the ear plate is hingedly connected to the bucket cylinder. The other end of the bucket cylinder extends from the front end of the telescopic arm and is hingedly connected to the rocker arm. The middle part of the rocker arm is rotatably connected to the middle part of the telescopic forearm, and the other end of the rocker arm is hingedly connected to a connecting rod, and the other end of the connecting rod is hingedly connected to the middle part of the quick changer.

[0012] According to an embodiment of the utility model, the hinge point between the connecting rod and the quick changer is located above the hinge point between the telescopic forearm and the quick changer.

[0013] According to an embodiment of the utility model, the quick changer includes two groups of fixed vertical plates and two groups of movable vertical plates, the two groups of fixed vertical plates are connected to the telescopic forearm in an articulated manner, the upper and lower ends of the two groups of fixed vertical plates are connected to cross bars in a perpendicular direction, and the two ends of the two cross bars are connected to the two groups of movable vertical plates in a movably manner;

[0014] The quick changer also includes a quick change oil cylinder, the middle part of which is connected to the two groups of fixed vertical plates, and the two ends of which are respectively connected to the two groups of movable vertical plates.

[0015] According to one embodiment of the utility model, the quick-change oil cylinder includes a cylinder body with openings at both ends, and two piston rods movably arranged at the two ends thereof, the cylinder body includes three oil chambers, when the oil chamber in the middle is filled with oil, the two oil chambers at the two ends discharge oil synchronously, and when the oil chamber in the middle is discharged from oil, the two oil chambers at the two ends are filled with oil synchronously.

[0016] According to one embodiment of the utility model, a self-lubricating nylon plate is provided on the inner side of the open end of the telescopic boom, and a self-lubricating nylon plate is provided on the outer side of one end of the telescopic arm facing the telescopic boom. When the telescopic arm is installed inside the telescopic arm, the self-lubricating nylon plate is located between the telescopic arm and the telescopic arm.

[0017] According to an embodiment of the utility model, a high-pressure iron pipe is installed on the outer side of the telescopic boom, and both ends of the high-pressure iron pipe are connected to hydraulic oil pipes.

[0018] According to an embodiment of the utility model, an oil filling hole is provided on the telescopic boom, the oil filling hole is connected to the gap between the telescopic boom and the telescopic arm, and the oil filling hole is used to fill butter into the gap.

[0019] According to one embodiment of the utility model, adjustable nuts are provided on the left and right sides of the telescopic boom, the inner ends of the adjustable nuts are in contact with the telescopic small arm, and the gap between the telescopic small arm and the telescopic boom can be adjusted by rotating the adjustable nuts, and the inner ends of the adjustable nuts are provided with self-lubricating nylon pads.

[0020] According to one embodiment of the utility model, it also includes a telescopic boom oil cylinder, one end of which is connected to the middle part of the front frame assembly in an articulated manner, and the other end of the telescopic boom oil cylinder is connected to the lower end of the middle front part of the telescopic boom in an articulated manner.

[0021] Another aspect of the utility model provides a telescopic arm loader, further comprising a rear frame assembly, wherein the rear frame assembly is connected to the front frame assembly, a ceiling is fixedly arranged on the upper part of the rear frame assembly, and a warning light is also arranged on the upper end of the ceiling. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic diagram of the telescopic arm structure of the utility model;

[0023] Figure 2 This is a schematic diagram of the telescopic boom structure of the utility model;

[0024] Figure 3 This is a schematic diagram of the structure of the telescopic small arm of the utility model;

[0025] Figure 4 This is a schematic diagram of the whole vehicle of the utility model;

[0026] Figure 5 This is a schematic diagram of the structure of the quick changer of the utility model;

[0027] In the attached figure: 1. rear frame assembly, 2. front frame assembly, 3. roof, 4. telescopic small arm, 5. telescopic big arm, 6. telescopic arm cylinder, 7. telescopic big arm cylinder, 8. self-lubricating nylon plate, 9. bucket cylinder, 10. rocker arm, 11. connecting rod, 12. quick changer, 13. quick change cylinder, 14. telescopic forearm. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical scheme and advantages of the present invention more clear, the following will be combined with the appendix of the present invention. Figure 1 ~Attached Figure 5 , the utility model is described in more detail.

[0029] The following description is used to disclose the utility model so that those skilled in the art can implement the utility model. The preferred embodiments described below are only examples, and those skilled in the art can think of other obvious variations. The basic principles of the utility model defined in the following description can be applied to other embodiments, variations, improvements, equivalents, and other technical solutions that do not deviate from the spirit and scope of the utility model.

[0030] Those skilled in the art should understand that, in the disclosure of the specification, the orientation or position relationship indicated by the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc. are based on the orientation or position relationship shown in the drawings, which are only for the convenience of describing the present invention and simplifying the description, and 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. Therefore, the above terms should not be understood as limiting the present invention.

[0031] It is to be understood that the term "one" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of an element may be one, while in another embodiment, the number of the element may be multiple, and the term "one" should not be understood as a limitation on the quantity.

[0032] The utility model provides a loader telescopic arm, including a front frame assembly 2, the upper end of the front frame assembly 2 is connected to a telescopic boom 5 in an articulated manner, the telescopic boom 5 is an internally hollow tubular structure, a telescopic small arm 4 is movably arranged inside the telescopic boom 5, one end of the telescopic small arm 4 extends out from the open end of the telescopic boom 5; a telescopic arm cylinder 6 is also arranged above the telescopic boom 5 and the telescopic small arm 4, the two ends of the telescopic arm cylinder 6 are respectively connected to the telescopic boom 5 and the telescopic small arm 4 in an articulated manner; the telescopic small arm 4 is an internally hollow tubular structure, the front end of the telescopic small arm 4 is fixedly connected to a telescopic forearm 14, the front end of the telescopic forearm 14 is articulated to a quick changer 12, and the interior of the telescopic small arm 4 is fixedly installed with Ear plate, the ear plate is connected to the bucket cylinder 9 in an articulated manner, the other end of the bucket cylinder 9 extends from the front end of the telescopic arm 4 and is articulated to the rocker arm 10, the middle part of the rocker arm 10 is rotatably connected to the middle part of the telescopic forearm 14, the other end of the rocker arm 10 is articulated to the connecting rod 11, the other end of the connecting rod 11 is articulated to the middle part of the quick changer 12; the hinge point of the connecting rod 11 and the quick changer 12 is located above the hinge point of the telescopic forearm 14 and the quick changer 12; the quick changer 12 includes two groups of fixed vertical plates and two groups of movable vertical plates, the two groups of fixed vertical plates are articulated to the telescopic forearm 14, the upper and lower ends of the two groups of fixed vertical plates are connected to cross bars in perpendicular directions, and the two ends of the two cross bars are movably It is connected to two groups of movable vertical plates; the quick changer 12 also includes a quick change cylinder 13, the middle part of the quick change cylinder 13 is connected to the two groups of fixed vertical plates, and the two ends of the quick change cylinder 13 are respectively connected to the two groups of movable vertical plates; the quick change cylinder 13 includes a cylinder body with openings at both ends, and two piston rods movably arranged at its two ends, and the cylinder body includes three oil chambers, when the oil chamber in the middle is filled with oil, the two oil chambers at the two ends are synchronously discharged with oil, and when the oil chamber in the middle is discharged with oil, the two oil chambers at the two ends are synchronously filled with oil; a self-lubricating nylon plate 8 is provided on the inner side of the open end of the telescopic boom 5, and a self-lubricating nylon plate 8 is provided on the outer side of one end of the telescopic arm 4 facing the telescopic boom 5, and when the telescopic arm 4 is installed inside the telescopic boom 5, the self-lubricating nylon plate 8 is located on the telescopic arm 4 and the telescopic boom 5; a high-pressure iron pipe is installed on the outer side of the telescopic boom 5, and hydraulic oil pipes are connected to both ends of the high-pressure iron pipe; an oil filling hole is provided on the telescopic boom 5, and the oil filling hole is connected to the gap between the telescopic boom 5 and the telescopic arm 4, and the oil filling hole is used to add butter into the gap; adjustable nuts are provided on the left and right sides of the telescopic boom 5, and the inner ends of the adjustable nuts are in contact with the telescopic arm 4, and the gap between the telescopic arm 4 and the telescopic boom 5 can be adjusted by rotating the adjustable nuts, and a self-lubricating nylon pad is provided on the inner ends of the adjustable nuts; it also includes a telescopic boom cylinder 7, one end of the telescopic boom cylinder 7 is connected to the middle part of the front frame assembly 2 in an articulated manner, and the other end of the telescopic boom cylinder 7 is connected to the lower end of the middle front part of the telescopic boom 5 in an articulated manner.

[0033] Another aspect of the utility model provides a telescopic arm loader, further comprising a rear frame assembly 1, wherein the rear frame assembly 1 is connected to the front frame assembly 2, a roof 3 is fixedly provided on the upper part of the rear frame assembly, and a warning light is also provided on the upper end of the roof 3.

[0034] Embodiment 1 of the present utility model is as follows:

[0035] like Figure 4 The overall appearance of the telescopic arm of the loader of the patent is shown, which is divided into a front frame assembly 2 and a rear frame assembly 1. The whole vehicle is hydraulically controlled, relatively small and flexible in structure.

[0036] The top of the roof 3 is provided with a warning light to remind surrounding pedestrians of the working status and prevent accidental collision. There are also guardrails around the roof 3 to effectively protect the driver's own safety.

[0037] Figure 1 The telescopic arm is in a telescopic state, the telescopic boom 5 and the telescopic arm 4 are of a sleeve structure, and the telescopic arm 4 can reciprocate inside the telescopic boom 5 through the action of the piston of the telescopic arm cylinder 6.

[0038] according to Figure 2 and Figure 3 It can be seen that the telescopic boom 5 and the telescopic arm 4 are transitioned by a self-lubricating nylon plate 8, and are provided with an oil filling channel, which can be filled with grease for lubrication to increase the service life. The telescopic boom 5 can adjust the gap by adjustable nuts on both sides to avoid friction between the arm and the boom, which causes transitional wear.

[0039] The external oil pipes of the telescopic boom 5 and the telescopic arm 4 are transitioned through high-pressure iron pipes, which reduces the wear of the oil pipes, increases the service life, and facilitates the replacement and maintenance of the oil pipes in case of oil pipe problems.

[0040] The bucket cylinder 9 is fixed to the inner side of the telescopic arm 4, and drives the rocker arm 10, the connecting rod 11, and the quick changer 12 to form a four-link 11 mechanism, which can more effectively improve the transmission efficiency and amplify the cylinder force. When the bucket cylinder 9 is extended, the rocker arm 10 is driven to rotate counterclockwise, so that the connecting rod 11 moves backward, and the quick changer rotates clockwise at this time; when the bucket cylinder 9 is shortened, the rocker arm 10 is driven to rotate clockwise, so that the connecting rod 11 moves forward, and the quick changer rotates counterclockwise at this time.

[0041] Among them according to Figure 5 As shown, the quick changer 12 is equipped with a quick change oil cylinder 13, which can lock the bucket and release the bucket by controlling the oil circuit, so as to facilitate the quick change of multiple auxiliary tool clamping operations, improve work efficiency, and reduce work time. The quick change oil cylinder 13 moves the movable vertical plate, and when it moves inward, it can clamp the bucket, and when it moves outward, it can release the bucket.

[0042] Since the movements of the telescopic arm of the loader are numerous and complex, another aspect of the utility model provides an electromagnetic multi-way valve, and controls the closing of the electromagnetic valve through a multi-function operating handle to manipulate the movement of the valve core in the multi-way valve body to deliver hydraulic oil to each working unit. The multi-function handle buttons control the forward and backward movement of the vehicle body, the reciprocating movement of the telescopic arm cylinder 6 and the locking state of the quick-change cylinder 13 from left to right, respectively, so that the operation of replacing auxiliary tools is more convenient, and the lifting of the boom and the loading and unloading operations of the bucket are controlled by the forward, backward, left and right movements of the operating handle, realizing the working state of operating the entire vehicle with one handle, greatly improving the comfort and convenience of operation.

[0043] This telescopic arm loader has a compact structure, small size, strong passability, adapts to various working conditions and can perform operations of various difficulty levels, especially loading and unloading operations. It effectively improves work efficiency and retains the versatility of auxiliary tools. The use of hydraulic quick changer 12 makes it easy to replace various auxiliary tools, improves work diversity, and realizes low-altitude extended operations. In addition, the cost is not much different from that of the same type of loader, achieving the effect of high quality and low price.

[0044] It should be noted that the terms "first, second and third" in the present invention are only used for descriptive purposes and do not indicate any order. They cannot be understood as indicating or implying relative importance. These terms can be interpreted as names.

[0045] It should be understood by those skilled in the art that the embodiments of the present invention described above and shown in the accompanying drawings are only examples and do not limit the present invention. The advantages of the present invention have been fully and effectively realized. The functions and structural principles of the present invention have been demonstrated and explained in the embodiments, and the embodiments of the present invention may be deformed or modified in any way without departing from the principles.

Claims

1. A telescopic arm of a loader, including a front frame assembly, characterized in that: The upper end of the front frame assembly is connected to a telescopic boom in an articulated manner. The telescopic boom is a hollow tubular structure. A telescopic small arm is movably arranged inside the telescopic boom. One end of the telescopic small arm extends out from the open end of the telescopic boom. A telescopic arm oil cylinder is also arranged above the telescopic boom and the telescopic arm, and the two ends of the telescopic arm oil cylinder are respectively connected to the telescopic boom and the telescopic arm in an articulated manner; The telescopic arm is a tubular structure with a hollow interior, the front end of the telescopic arm is fixedly connected to the telescopic forearm, the front end of the telescopic forearm is hingedly connected to the quick changer, an ear plate is fixedly installed inside the telescopic arm, the ear plate is hingedly connected to the bucket cylinder, the other end of the bucket cylinder extends from the front end of the telescopic arm and is hingedly connected to a rocker arm, the middle part of the rocker arm is rotatably connected to the middle part of the telescopic forearm, the other end of the rocker arm is hingedly connected to a connecting rod, and the other end of the connecting rod is hingedly connected to the middle part of the quick changer.

2. The loader telescopic arm according to claim 1, characterized in that: The hinge point between the connecting rod and the quick changer is located above the hinge point between the telescopic forearm and the quick changer.

3. The loader telescopic arm according to claim 1, characterized in that: The quick changer comprises two groups of fixed vertical plates and two groups of movable vertical plates, the two groups of fixed vertical plates are connected to the telescopic forearm in an articulated manner, the upper and lower ends of the two groups of fixed vertical plates are connected to cross bars in a perpendicular direction, and the two ends of the two cross bars are connected to the two groups of movable vertical plates in a movably manner; The quick changer also includes a quick change oil cylinder, the middle part of the quick change oil cylinder is connected to two groups of fixed vertical plates, and the two ends of the quick change oil cylinder are respectively connected to the two groups of movable vertical plates.

4. The loader telescopic arm according to claim 3, characterized in that: The quick-change oil cylinder includes a cylinder body with openings at both ends, and two piston rods movably arranged at the two ends. The cylinder body includes three oil chambers. When the oil chamber in the middle is filled with oil, the two oil chambers at the two ends are simultaneously discharged with oil. When the oil chamber in the middle is discharged with oil, the two oil chambers at the two ends are simultaneously filled with oil.

5. The loader telescopic arm according to claim 1, characterized in that: A self-lubricating nylon plate is arranged on the inner side of the open end of the telescopic boom, and a self-lubricating nylon plate is arranged on the outer side of one end of the telescopic arm facing the telescopic boom. When the telescopic arm is installed inside the telescopic arm, the self-lubricating nylon plate is located between the telescopic arm and the telescopic boom.

6. The loader telescopic arm according to claim 1, characterized in that: A high-pressure iron pipe is installed on the outer side of the telescopic boom, and both ends of the high-pressure iron pipe are connected with hydraulic oil pipes.

7. The loader telescopic arm according to claim 1, characterized in that: The telescopic boom is provided with an oil filling hole, the oil filling hole is communicated with the gap between the telescopic boom and the telescopic arm, and the oil filling hole is used to fill butter into the gap.

8. The loader telescopic arm according to claim 1, characterized in that: Adjustable nuts are provided on both sides of the telescopic boom, the inner ends of the adjustable nuts are in contact with the telescopic small arm, and the gap between the telescopic small arm and the telescopic boom can be adjusted by rotating the adjustable nuts. A self-lubricating nylon pad is provided on the inner ends of the adjustable nuts.

9. The loader telescopic arm according to claim 1, characterized in that: It also includes a telescopic boom oil cylinder, one end of which is connected to the middle part of the front frame assembly in an articulated manner, and the other end of the telescopic boom oil cylinder is connected to the lower end of the middle front part of the telescopic boom in an articulated manner.

10. A telescopic arm loader, comprising the loader telescopic arm according to any one of claims 1 to 9, characterized in that: It also includes a rear frame assembly, which is connected to the front frame assembly. A roof is fixedly arranged on the upper part of the rear frame assembly, and a warning light is also arranged on the upper end of the roof.

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