A bucket truck mechanical arm auxiliary device

Abstract

The present invention discloses a boom truck manipulator arm auxiliary device, comprising a fixing mechanism, a manipulator, and a gripping mechanism. The gripping mechanism is connected to the fixing mechanism via the manipulator. The manipulator is primarily composed of a plurality of sequentially hinged arms, each of which is provided with a locking mechanism and an unlocking mechanism at its hinge. An operating mechanism is provided on each arm, and the operating mechanism is connected to each locking mechanism via a corresponding unlocking mechanism, for synchronously locking or unlocking the hinges of each arm. The boom truck manipulator arm auxiliary device has a simple structure, is easy to operate, saves time and effort, and can ensure that the gripping mechanism is in a properly adjusted position.

Description

Technical Field

[0001] The present invention relates to the technical field of power distribution equipment, and in particular to a boom truck mechanical arm auxiliary device. Background Art

[0002] With the rapid development and widespread adoption of non-stop distribution network operations, short-pole operations using insulated boom trucks have become widely used. Suitable for complex distribution network environments, insulated boom support tools assist operators in construction. By utilizing the boom truck's robotic arm as a "third hand" for construction workers, laborious tasks can be handled by this "third hand," reducing the number of operators, their workload, and the risk of accidents. This is crucial for improving the safety and reliability of distribution network operations.

[0003] Existing bucket truck mechanical arm auxiliary tools, such as Figure 1 As shown, it includes a fixing mechanism and a manipulator. One end of the manipulator is set on the fixing mechanism, and the other end is provided with a gripper. The manipulator consists of multiple arms, and the arms are connected in a rotating manner to facilitate the adjustment of the spatial position of the gripper. The rotating connection is locked by a locking piece. The existing bucket truck manipulator auxiliary tool has the following shortcomings:

[0004] 1) When adjusting the gripper position, each locking member needs to be loosened separately. Each locking member can only be operated individually and in sequence, requiring coordination with other operators. This is cumbersome, troublesome, time-consuming and labor-intensive. After the gripper position is adjusted, each locking member needs to be locked in sequence, making it difficult to ensure that the gripper adjustment position remains unchanged.

[0005] 2) The structural design of the rotating joints of each arm is unreasonable, and the locking effect of the locking parts is difficult to ensure. Summary of the Invention

[0006] The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art and provide a boom truck manipulator arm auxiliary device that is simple in structure, easy to operate, saves time and effort, and can ensure that the gripping mechanism is in an adjusted position.

[0007] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0008] A boom truck manipulator arm auxiliary device includes a fixing mechanism, a manipulator and a grasping mechanism. The grasping mechanism is connected to the fixing mechanism through the manipulator. The manipulator is mainly composed of a plurality of arms hinged in sequence. The hinge of each arm is provided with a locking mechanism and an unlocking mechanism. An operating mechanism is provided on one arm. The operating mechanism is connected to each locking mechanism through a corresponding unlocking mechanism, so as to synchronously lock or unlock the hinge of each arm.

[0009] As a further improvement of the above technical solution:

[0010] The locking mechanism includes a first locking plate, a second locking plate and a locking elastic member, the first locking plate and the second locking plate are respectively connected to the corresponding two arms for synchronous rotation, and the first locking plate and the second locking plate are coaxial with the hinge axis at the hinge point of the arm and can slide along the hinge axis. The locking elastic member is arranged between the corresponding two arms to press the first locking plate and the second locking plate tightly, and the unlocking mechanism is used to release or reduce the pressing effect of the locking elastic member on the first locking plate and the second locking plate.

[0011] The unlocking mechanism includes an unlocking shaft, a pushing plate, a rocker arm and an unlocking block. The unlocking shaft is passed through an arm and is slidably arranged along the hinge axis at the hinge of the arm. The pushing plate is synchronously connected to the unlocking shaft and abuts between the locking elastic member and the corresponding locking plate. One end of the rocker arm is hinged to the arm through which the unlocking shaft passes, and the middle part is rotatably connected to one end of the unlocking shaft. The unlocking block is slidably arranged on the arm where the rocker arm is located and abuts against the other end of the rocker arm to make the rocker arm swing and adjust. The operating mechanism is connected to each unlocking block.

[0012] The unlocking block is provided with a resisting inclined surface, and the other end of the rocking rod is provided with a pulley, and the pulley is in contact with the resisting inclined surface.

[0013] The operating mechanism includes an unlocking handle and a pull wire. The unlocking handle is arranged on any arm and is connected to each unlocking block through the pull wire.

[0014] A rotating connecting seat and a rotating connecting sleeve are respectively provided on the corresponding two arms. The rotating connecting seat and the rotating connecting sleeve are rotatably connected. The unlocking shaft is passed through the center of the rotating connecting seat and the rotating connecting sleeve. The first locking plate, the second locking plate, the pushing plate and the locking elastic member are all located in the rotating connecting sleeve.

[0015] A spline sleeve is provided on the other arm, the other end of the unlocking shaft is rotationally connected to the spline sleeve, the second locking plate is spline-matched with the push plate, the rotating connecting seat is spline-matched with the first locking plate, and the push plate is spline-matched with the spline sleeve.

[0016] The movable sleeve on the unlocking shaft is provided with a clamping plate, a compression spring plate and a connecting column connected between the clamping plate and the compression spring plate, the connecting column is passed through the pushing plate, the pushing plate is located between the clamping plate and the compression spring plate, the clamping plate is clamped with the spline sleeve, the locking elastic member is provided between the clamping plate and the pushing plate, and the first locking plate and the second locking plate are pressed between the clamping plate and the pushing plate.

[0017] There are multiple first locking plates and second locking plates, which are arranged alternately.

[0018] The fixing mechanism includes a fixing assembly for fixing on the boom truck and a fixing seat slidably mounted on the fixing assembly. The grabbing mechanism is connected to the fixing seat via a manipulator. The fixing seat is provided with a locking assembly for locking on the fixing assembly.

[0019] Compared with the prior art, the advantages of the present invention are:

[0020] The boom truck manipulator arm auxiliary device of the present invention, when adjusting the position of the gripping mechanism, operates the operating mechanism, and drives the locking mechanisms to move synchronously through the unlocking mechanism, so that the hinges of each arm are unlocked synchronously. At this time, the hinges of each arm can be rotated and adjusted to adjust the position of the gripping mechanism; when the position of the gripping mechanism is adjusted, operates the operating mechanism, and drives the locking mechanisms to move synchronously through the unlocking mechanism, so that the hinges of each arm are locked synchronously. At this time, the hinges of each arm are fixed to fix the position of the gripping mechanism. The boom truck manipulator arm auxiliary device can synchronously lock or unlock the hinges of each arm through the operating mechanism, which can be completed by one person, is easy to operate, and saves time and effort. In addition, after the position is adjusted, the hinges are synchronously locked to ensure that the gripping mechanism is in the adjusted position. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural diagram of an existing bucket truck mechanical arm auxiliary tool.

[0022] Figure 2 It is a schematic diagram of the three-dimensional structure of the bucket truck mechanical arm auxiliary device of the present invention.

[0023] Figure 3 It is a schematic cross-sectional view of the hinged portion of the auxiliary device for the mechanical arm of the bucket truck of the present invention.

[0024] Figure 4 It is a partial exploded view of the boom truck mechanical arm auxiliary device of the present invention.

[0025] Figure 5 yes Figure 4 Enlarged view of point A in the middle.

[0026] Figure 6 It is a structural schematic diagram of the rotary connecting sleeve of the boom truck mechanical arm auxiliary device of the present invention.

[0027] Figure 7 It is a structural schematic diagram of the push plate of the bucket truck mechanical arm auxiliary device of the present invention.

[0028] Figure 8 It is a structural schematic diagram of the spline sleeve of the auxiliary device of the bucket arm truck mechanical arm of the present invention.

[0029] Figure 9 It is a structural schematic diagram of the clamping plate of the auxiliary device of the bucket truck mechanical arm of the present invention.

[0030] The numbers in the figure represent:

[0031] 1. Fixing mechanism; 11. Fixing assembly; 12. Fixing seat; 13. Locking assembly; 2. Manipulator; 21. Arm; 22. Rotating connecting seat; 221. Ring sleeve; 23. Rotating connecting sleeve; 24. Spline sleeve; 3. Grasping mechanism; 4. Locking mechanism; 41. First locking plate; 42. Second locking plate; 43. Locking elastic member; 5. Unlocking mechanism; 51. Unlocking shaft; 511. Clamping plate; 512. Compression spring plate; 513. Connecting column; 52. Pushing plate; 521. Ring; 53. Rocker arm; 531. Pulley; 54. Unlocking block; 541. Pushing inclined plane; 6. Operating mechanism; 61. Unlocking handle; 62. Pull wire; 7. Boom truck. DETAILED DESCRIPTION

[0032] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0033] In the description of this application, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing this application 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, and therefore cannot be understood as a limitation on this application.

[0034] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. Throughout the description of this application, "plurality" means two or more, unless otherwise specifically defined.

[0035] In this application, unless otherwise specified or limited, the terms "assemble," "connect," "connect," "fix," and the like should be understood in a broad sense. For example, they may refer to fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; and internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on the specific circumstances.

[0036] Figures 2 to 9An embodiment of a boom truck manipulator arm auxiliary device of the present invention is shown. The boom truck manipulator arm auxiliary device of this embodiment includes a fixing mechanism 1, a manipulator 2, and a grasping mechanism 3. The grasping mechanism 3 is connected to the fixing mechanism 1 via the manipulator 2. The manipulator 2 is mainly composed of a plurality of arms 21 that are hinged in sequence. The hinge of each arm 21 is provided with a locking mechanism 4 and an unlocking mechanism 5. An operating mechanism 6 is provided on each arm 21. The operating mechanism 6 is connected to each locking mechanism 4 via a corresponding unlocking mechanism 5, and is used to synchronously lock or unlock the hinge of each arm 21. The fixing mechanism 1 is used to be fixed to the boom truck.

[0037] When adjusting the position of the gripping mechanism 3, the operating mechanism 6 is operated to drive the locking mechanisms 4 to move synchronously through the unlocking mechanism 5, so that the hinges of each arm 21 are unlocked synchronously. At this time, the hinges of each arm 21 can be rotated and adjusted to adjust the position of the gripping mechanism 3. After the position of the gripping mechanism 3 is adjusted, the operating mechanism 6 is operated to drive the locking mechanisms 4 to move synchronously through the unlocking mechanism 5, so that the hinges of each arm 21 are locked synchronously. At this time, the hinges of each arm 21 are fixed to fix the position of the gripping mechanism 3. This boom truck manipulator arm auxiliary device can synchronously lock or unlock the hinges of each arm 21 through the operating mechanism 6. This can be done by one person, is easy to operate, and saves time and effort. In addition, after the position is adjusted, the hinges are synchronously locked to ensure that the gripping mechanism 3 is in the adjusted position.

[0038] In this embodiment, Figure 2 As shown, the locking mechanism 4 includes a first locking plate 41, a second locking plate 42 and a locking elastic member 43. The first locking plate 41 and the second locking plate 42 are respectively connected to the corresponding two arms 21 for synchronous rotation, and the first locking plate 41 and the second locking plate 42 are coaxial with the hinge axis at the hinge of the arm 21 and can slide along the direction of the hinge axis. The locking elastic member 43 is arranged between the corresponding two arms 21, so that the first locking plate 41 and the second locking plate 42 are pressed tightly. The unlocking mechanism 5 is used to release or reduce the pressing effect of the locking elastic member 43 on the first locking plate 41 and the second locking plate 42.

[0039] When the operating mechanism 6 is operated, driving the unlocking mechanism 5 to release or reduce the force exerted by the locking spring 43 on the first and second locking plates 41, 42, the friction between the first and second locking plates 41, 42 is reduced or eliminated, allowing the hinges of each arm 21 to rotate and adjust. Conversely, when the locking spring 43 is not affected by the unlocking mechanism 5, the locking spring 43 forces the first and second locking plates 41, 42 into contact, thereby securing the hinges of each arm 21. Specifically, the first and second locking plates 41, 42 are semi-metallic friction plates, carbon fiber friction plates, or powder metallurgy friction plates. The force exerted by the locking spring 43 on the first and second locking plates 41, 42 generates friction, preventing relative rotation. The locking spring 43 forces the first and second locking plates 41, 42 into contact with each other, effectively locking the hinges.

[0040] In this embodiment, the unlocking mechanism 5 includes an unlocking shaft 51, a pushing plate 52, a rocker arm 53 and an unlocking block 54. The unlocking shaft 51 is passed through an arm 21 and is slidably arranged along the hinge axis at the hinge of the arm 21. The pushing plate 52 is synchronously moved and connected with the unlocking shaft 51 and abuts against the locking elastic member 43 and the corresponding locking plate. One end of the rocker arm 53 is hinged to the arm 21 passed through by the unlocking shaft 51, and the middle part is rotatably connected to one end of the unlocking shaft 51. The unlocking block 54 is slidably arranged on the arm 21 where the rocker arm 53 is located and abuts against the other end of the rocker arm 53, so that the rocker arm 53 swings and adjusts. The operating mechanism 6 is connected to each unlocking block 54.

[0041] During the unlocking process, the operating mechanism 6 causes the unlocking block 54 to slide toward the rocker 53. This unlocking block 54 pushes the rocker 53 to swing. The rocker 53 then moves the push plate 52 via the unlocking shaft 51. The push plate 52 compresses the locking spring 43, releasing or reducing the locking spring 43's force on the first and second locking plates 41, 42. This design is rational and easy to operate.

[0042] In this embodiment, the unlocking block 54 is provided with an inclined push surface 541, and the other end of the rocker arm 53 is provided with a pulley 531, which abuts the inclined push surface 541. Thus, when the inclined push surface 541 slides toward the rocker arm 53, the rocker arm 53 swings outward, driving the push plate 52 via the unlocking shaft 51. The push plate 52 compresses the locking elastic member 43, thereby releasing or reducing the locking elastic member 43's abutment against the first and second locking plates 41 and 42. Conversely, when the inclined push surface 541 slides away from the rocker arm 53, the rocker arm 53 returns to its original position, and the locking elastic member 43 returns to its original position, re-establishing a locking effect on the first and second locking plates 41 and 42.

[0043] In this embodiment, the operating mechanism 6 includes an unlocking handle 61 and a pull wire 62. The unlocking handle 61 is located on either arm 21 and is connected to each unlocking block 54 via the pull wire 62. The unlocking handle 61, such as a brake handle, is similar to a brake handle. Squeezing the unlocking handle 61 causes the pull wire 62 to drive the inclined surface 541 toward the rocker 53. This simple structure allows for easy operation, allowing for convenient connection with each unlocking block 54, ensuring synchronized movement of the blocks.

[0044] In this embodiment, the two corresponding arms 21 are respectively provided with a rotating connection seat 22 and a rotating connection sleeve 23. The rotating connection seat 22 and the rotating connection sleeve 23 are rotatably connected. The unlocking shaft 51 is passed through the center of the rotating connection seat 22 and the rotating connection sleeve 23. The first locking plate 41, the second locking plate 42, the push plate 52, and the locking elastic member 43 are all located within the rotating connection sleeve 23. The two corresponding arms 21 are rotationally connected by the rotating connection seat 22 and the rotating connection sleeve 23 that are rotatably connected. The first locking plate 41, the second locking plate 42, the push plate 52, and the locking elastic member 43 are all located within the rotating connection sleeve 23 to prevent mutual interference with the external environment. Specifically, the rotating connection seat 22 is fixed to the corresponding arm 21 by bolts, and the rotating connection sleeve 23 is fixed to the corresponding arm 21 by bolts, which facilitates disassembly and assembly.

[0045] In this embodiment, the other arm 21 is provided with a splined sleeve 24. The other end of the unlocking shaft 51 is rotationally connected to the splined sleeve 24. The second locking plate 42 is splined to the push plate 52. The rotating connection seat 22 is splined to the first locking plate 41. The push plate 52 is splined to the splined sleeve 24. The other end of the unlocking shaft 51 is rotationally connected to the splined sleeve 24 to prevent the rotation of the splined sleeve 24 from driving the unlocking shaft 51. Specifically, the unlocking shaft 51 and the splined sleeve 24 are detachably connected, facilitating disassembly. The second locking plate 42 is splined to the push plate 52, enabling synchronous rotation and axial relative movement between the two. The rotating connection seat 22 is splined to the first locking plate 41, enabling synchronous rotation and axial relative movement between the two. The push plate 52 is splined to the splined sleeve 24, enabling synchronous rotation and axial relative movement between the two. In this way, the rotary connecting seat 22, the first locking plate 41 and the arm 21 where the rotary connecting seat 22 is located rotate synchronously; the second locking plate 42, the pushing plate 52, the spline sleeve 24 and the arm 21 where the spline sleeve 24 is located rotate synchronously.

[0046] In this embodiment, the unlocking shaft 51 is provided with a movable sleeve including a pressing disc 511, a compression spring disc 512, and a connecting post 513 connected between the pressing disc 511 and the compression spring disc 512. The connecting post 513 is inserted into the push disc 52, which is located between the pressing disc 511 and the compression spring disc 512. The pressing disc 511 is engaged with the splined sleeve 24, and the locking elastic member 43 is disposed between the pressing disc 511 and the push disc 52. The first locking disc 41 and the second locking disc 42 abut against the pressing disc 511 and the push disc 52. The pressing disc 511 is engaged with the splined sleeve 24. When the unlocking shaft 51 drives the push disc 52 to move to compress the locking elastic member 43, the compression spring disc 512 does not move and remains spaced apart from the rotating connector 22. This prevents the hinge from being locked due to the abutment between the compression spring disc 512 and the rotating connector 22. The overall structural design is ingenious and meets the requirements of locking and unlocking movements.

[0047] Specifically, if Figures 5 to 7 As shown, the rotating connecting seat 22 is provided with a ring sleeve 221 on the side facing the tightening disc 511, and the pushing disc 52 is provided with a collar 521 on the side facing the tightening disc 511. The collar 521 is located inside the collar sleeve 221 and is coaxial with the collar sleeve 221. The first locking disc 41 and the second locking disc 42 are sleeved outside the collar 521 and inside the collar sleeve 221. The first locking disc 41 is spline-connected to the collar sleeve 221 to achieve synchronous rotation and axial relative movement between the two. The second locking disc 42 is spline-connected to the collar 521 to achieve synchronous rotation and axial relative movement between the two. The tightening disc 511 and the collar 521 are spline-connected to increase the stability of the overall structure. The spline sleeve 24 is fixed to the arm 21 by bolts.

[0048] In this embodiment, a plurality of first locking plates 41 and second locking plates 42 are provided and arranged alternately to improve the locking effect.

[0049] In this embodiment, Figure 1 As shown, the fixing mechanism 1 includes a fixing assembly 11 for fixing to the boom truck 7 and a fixing seat 12 slidably mounted on the fixing assembly 11. The gripping mechanism 3 is connected to the fixing seat 12 through the manipulator 2. The fixing seat 12 is provided with a locking assembly 13 for locking to the fixing assembly 11. When in use, the fixing assembly 11 is fixed to the boom truck 7. The fixing seat 12 is slidably mounted on the fixing assembly 11 and can be slid to adjust the position, thereby increasing the adjustment range of the manipulator 2. When the locking assembly 13 locks the fixing seat 12 to the fixing assembly 11, the fixing seat 12 is fixed and does not move. When the locking assembly 13 releases the locking effect on the fixing seat 12, the fixing seat 12 can be slid to adjust the position.

[0050] Although the present invention has been disclosed above with reference to preferred embodiments, this is not intended to limit the present invention. Any person skilled in the art can, without departing from the scope of the technical solution of the present invention, utilize the technical content disclosed above to make many possible changes and modifications to the technical solution of the present invention, or modify it into an equivalent embodiment with equivalent changes. Therefore, any simple modification, equivalent change, and modification made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention shall fall within the scope of protection of the technical solution of the present invention.

Claims

1. A boom truck manipulator auxiliary device, comprising a fixing mechanism (1), a manipulator (2) and a gripping mechanism (3), wherein the gripping mechanism (3) is connected to the fixing mechanism (1) via the manipulator (2), and the manipulator (2) is mainly composed of a plurality of arms (21) articulated in sequence, and is characterized in that: The hinge of each arm (21) is provided with a locking mechanism (4) and an unlocking mechanism (5), and an operating mechanism (6) is provided on one arm (21), and the operating mechanism (6) is connected to each locking mechanism (4) through the corresponding unlocking mechanism (5), and is used to lock or unlock the hinge of each arm (21) synchronously; the locking mechanism (4) includes a first locking plate (41), a second locking plate (42) and a locking elastic member (43), the first locking plate (41) and the second locking plate (42) are respectively connected to the corresponding two arms (21) in synchronous rotation, and the first locking plate (41) and the second locking plate (42) are coaxial with the hinge axis of the hinge of the arm (21) and can slide along the hinge axis direction, the locking elastic member (43) is provided between the corresponding two arms (21), so that the first locking plate (41) and the second locking plate (42) are pressed against each other, and the unlocking mechanism (5) is used to release or lower the locking mechanism. The elastic member (43) acts to press the first locking plate (41) and the second locking plate (42); the unlocking mechanism (5) comprises an unlocking shaft (51), a pushing plate (52), a rocker (53) and an unlocking block (54); the unlocking shaft (51) is passed through an arm (21) and is slidably arranged along a hinge axis at a hinge of the arm (21); the pushing plate (52) is synchronously connected to the unlocking shaft (51) and presses against the locking elastic member (43) and the corresponding Between the locking plates, one end of the swing rod (53) is hinged to the arm (21) passed by the unlocking shaft (51), and the middle part is rotatably connected to one end of the unlocking shaft (51). The unlocking block (54) is slidably arranged on the arm (21) where the swing rod (53) is located and abuts against the other end of the swing rod (53) to make the swing rod (53) swing and adjust. The operating mechanism (6) is connected to each unlocking block (54) to make the unlocking block (54) slide in the direction close to the swing rod (53).

2. The boom truck manipulator arm auxiliary device according to claim 1, characterized in that: The unlocking block (54) is provided with a resisting inclined surface (541), and the other end of the swing rod (53) is provided with a pulley (531), and the pulley (531) is in contact with the resisting inclined surface (541).

3. The boom truck manipulator arm auxiliary device according to claim 1, characterized in that: The operating mechanism (6) comprises an unlocking handle (61) and a pull wire (62). The unlocking handle (61) is provided on any arm (21) and is connected to each unlocking block (54) via the pull wire (62).

4. The boom truck manipulator arm auxiliary device according to claim 1, characterized in that: A rotating connection seat (22) and a rotating connection sleeve (23) are respectively provided on the corresponding two arms (21), the rotating connection seat (22) and the rotating connection sleeve (23) are rotatably sleeved, the unlocking shaft (51) is passed through the center of the rotating connection seat (22) and the rotating connection sleeve (23), and the first locking plate (41), the second locking plate (42), the pushing plate (52) and the locking elastic member (43) are all located in the rotating connection sleeve (23).

5. The boom truck manipulator arm auxiliary device according to claim 4, characterized in that: The other arm (21) is provided with a spline sleeve (24), the other end of the unlocking shaft (51) is rotatably connected to the spline sleeve (24), the second locking plate (42) is spline-matched with the push plate (52), the rotating connection seat (22) is spline-matched with the first locking plate (41), and the push plate (52) is spline-matched with the spline sleeve (24).

6. The boom truck manipulator arm auxiliary device according to claim 5, characterized in that: The movable sleeve on the unlocking shaft (51) is provided with a tightening disc (511), a compression spring disc (512) and a connecting column (513) connected between the tightening disc (511) and the compression spring disc (512); the connecting column (513) is passed through the pushing disc (52); the pushing disc (52) is located between the tightening disc (511) and the compression spring disc (512); the tightening disc (511) is engaged with the spline sleeve (24); the locking elastic member (43) is provided between the tightening disc (511) and the pushing disc (52); the first locking disc (41) and the second locking disc (42) are pressed between the tightening disc (511) and the pushing disc (52).

7. The boom truck manipulator arm auxiliary device according to claim 1, characterized in that: The first locking disc (41) and the second locking disc (42) are provided in plurality and are arranged alternately.

8. The boom truck manipulator arm auxiliary device according to any one of claims 1 to 7, characterized in that: The fixing mechanism (1) comprises a fixing assembly (11) for fixing on the boom truck (7) and a fixing seat (12) slidably mounted on the fixing assembly (11); the gripping mechanism (3) is connected to the fixing seat (12) via a manipulator (2); and the fixing seat (12) is provided with a locking assembly (13) for locking on the fixing assembly (11).

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