Working arm anti-dropping device

Abstract

The utility model relates to a working arm anti -drop device belongs to the aerial work vehicle field, the utility model discloses a arm bracket, its structural characteristics are at: still include telescopic link, lock pin, guide sleeve and the lock ring of fixed on working arm, telescopic link and guide sleeve all install on arm bracket, lock pin installs on telescopic link, and lock pin is located in the guide sleeve, the lock ring is cooperated with lock pin, be provided with the inclined plane on lock pin, lock pin passes through the pin and installs on telescopic link, be provided with the limiting bolt on the guide sleeve, be provided with the limiting slot of cooperation with limiting bolt on lock pin, limiting bolt is located in the limiting slot, telescopic link is the spring electric pull rod, cylinder or oil cylinder with.

Description

Technical Field

[0001] This utility model relates to a boom anti-detachment device, belonging to the field of aerial work platforms. Background Technology

[0002] Aerial work platforms come in various forms, including folding, straight-reaching, and hybrid types. Among these, straight-reaching and hybrid types are widely used. When an aerial work platform is in motion, to prevent the boom from slipping off the boom support, straps are needed to secure the boom to the support. However, due to the small size and structural layout of some models, straps cannot be used for this purpose. Utility Model Content

[0003] The purpose of this utility model is to overcome the above-mentioned deficiencies in the existing technology and provide a working arm anti-detachment device with a reasonable structural design that ensures the working arm is fixed on the arm bracket when the aerial work vehicle is in motion and will not slip off the working arm even when the road surface is bumpy, thus ensuring driving safety.

[0004] The technical solution adopted by this utility model to solve the above problems is: the working arm anti-detachment device includes an arm bracket, and its structural features are: it also includes a telescopic rod, a locking pin, a guide sleeve and a locking ring fixed on the working arm. The telescopic rod and the guide sleeve are both installed on the arm bracket. The locking pin is installed on the telescopic rod and is located inside the guide sleeve. The locking ring cooperates with the locking pin. The locking pin is provided with an inclined surface.

[0005] Furthermore, the locking pin is mounted on the telescopic rod by a pin.

[0006] Furthermore, the guide sleeve is provided with a limiting bolt, and the locking pin is provided with a limiting groove that cooperates with the limiting bolt, and the limiting bolt is located in the limiting groove.

[0007] Furthermore, the telescopic rod is a spring-loaded electric pull rod, a pneumatic cylinder, or a hydraulic cylinder.

[0008] Compared with the prior art, the present invention has the following advantages: the working arm anti-detachment device can fix the working arm on the arm bracket when the aerial work vehicle is traveling to ensure driving safety. In other words, when the working arm lands on the arm bracket, the locking ring can be fixed by the locking pin to fix the position of the working arm. Attached Figure Description

[0009] Figure 1 This is a cross-sectional structural schematic diagram of the anti-detachment device for the working arm according to an embodiment of this utility model.

[0010] Figure 2 yes Figure 1 A magnified structural diagram of part A in the diagram.

[0011] Figure 3This is a three-dimensional structural diagram of the anti-detachment device for the working arm according to an embodiment of the present utility model.

[0012] In the diagram: 1. Working arm; 2. Arm bracket; 3. Telescopic rod; 4. Locking pin; 5. Pin; 6. Locking ring; 7. Guide sleeve; 8. Limiting bolt; 9. Inclined surface. Detailed Implementation

[0013] The present invention will be further described in detail below with reference to the accompanying drawings and through embodiments. The following embodiments are explanations of the present invention, but the present invention is not limited to the following embodiments.

[0014] Example.

[0015] See Figures 1 to 3 As shown in the accompanying drawings, the structures, proportions, sizes, etc., depicted in this specification are merely for illustrative purposes to aid those skilled in the art and to provide a clear understanding. They are not intended to limit the scope of this invention and therefore have no substantial technical significance. Any modifications to the structure, changes in proportions, or adjustments to size, provided they do not affect the effectiveness or purpose of this invention, should still fall within the scope of the technical content disclosed in this invention. Furthermore, the use of terms such as "upper," "lower," "left," "right," "middle," and "one" in this specification is solely for clarity and not intended to limit the scope of this invention. Changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered within the scope of this invention.

[0016] The anti-detachment device for the working arm in this embodiment includes an arm bracket 2, a telescopic rod 3, a locking pin 4, a guide sleeve 7, and a locking ring 6 fixed on the working arm 1. The telescopic rod 3 and the guide sleeve 7 are both installed on the arm bracket 2. The locking pin 4 is installed on the telescopic rod 3 by a pin 5, and the locking pin 4 is located inside the guide sleeve 7. The locking ring 6 cooperates with the locking pin 4, and the locking pin 4 is provided with an inclined surface.

[0017] In this embodiment, the guide sleeve 7 is provided with a limiting bolt 8, and the locking pin 4 is provided with a limiting groove that cooperates with the limiting bolt 8. The limiting bolt 8 is located in the limiting groove, and the telescopic rod 3 is an electric pull rod with a spring, a cylinder, or a hydraulic cylinder.

[0018] When the telescopic rod 3 is an electric pull rod with a spring, the telescopic rod 3 can pull back the locking pin 4 when energized, and the locking pin 4 can be ejected by the spring when de-energized; when the telescopic rod 3 is a cylinder with a spring, the telescopic rod 3 can pull back the locking pin 4 when energized, and the locking pin 4 can be ejected by the spring when de-energized; when the telescopic rod 3 is a hydraulic cylinder with a spring, the telescopic rod 3 can pull back the locking pin 4 when energized, and the locking pin 4 can be ejected by the spring when de-energized.

[0019] Specifically, the telescopic rod 3 and guide sleeve 7 are installed on the boom bracket 2. The telescopic rod 3 and locking pin 4 are hinged by pin 5. The locking pin 4 moves telescopically on the guide sleeve 7. When the working arm 1 is lowered into the boom bracket 2, the locking ring 6 on the working arm 1 presses on the inclined surface 9 of the locking pin 4. After the working arm 1 is in place on the boom bracket 2, the locking ring 6 slides under the locking pin 4. When the aerial work platform vehicle is moving and the vehicle is bumpy, the working arm 1 jumps up, and the locking pin 4 will pull the locking ring 6 to prevent the working arm 1 from jumping up and sliding out of the boom bracket 2. The telescopic rod 3 is a spring-loaded electric pull rod. The spring-loaded electric pull rod shortens when energized or when the locking pin 4 is pushed, and extends naturally in the spring state after the power is cut off.

[0020] Furthermore, it should be noted that the specific embodiments described in this specification may differ in the shape and name of their components. The above description is merely illustrative of the structure of this utility model. All equivalent or simple variations made based on the structure, features, and principles described in this utility model are included within the protection scope of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to replace them, as long as they do not deviate from the structure of this utility model or exceed the scope defined by the claims, all of which should fall within the protection scope of this utility model.

Claims

1. A work arm anti-dropping device comprising an arm bracket (2), characterized in that: It also includes a telescopic rod (3), a locking pin (4), a guide sleeve (7), and a locking ring (6) fixed on the working arm (1). The telescopic rod (3) and the guide sleeve (7) are both installed on the arm bracket (2). The locking pin (4) is installed on the telescopic rod (3) and is located inside the guide sleeve (7). The locking ring (6) cooperates with the locking pin (4). The locking pin (4) has an inclined surface.

2. The work arm anti-dropping device according to claim 1, characterized by: The locking pin (4) is mounted on the telescopic rod (3) by a pin (5).

3. The work arm anti-dropping device according to claim 1, characterized in that: The guide sleeve (7) is provided with a limiting bolt (8), and the locking pin (4) is provided with a limiting groove that cooperates with the limiting bolt (8). The limiting bolt (8) is located in the limiting groove.

4. The anti-detachment device for the working arm according to claim 1, characterized in that: The telescopic rod (3) is a spring-loaded electric pull rod, a pneumatic cylinder, or a hydraulic cylinder.

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