A protective arm with adjustment function

Abstract

The present invention relates to the field of automated mechanical equipment, and in particular to a protective arm with an adjustment function. The present invention is achieved through the following technical solutions: a protective arm with an adjustment function, comprising a protective arm fixing frame and an arm body, a mounting seat is mounted on the protective arm fixing frame, the arm body is rotatably connected to the mounting seat, the protective arm further comprises a flip self-locking device, one end of the flip self-locking device is hinged to the protective arm fixing frame, and the other end is hinged to the arm body, the flip self-locking device drives the arm body to open and close relative to the protective arm fixing frame, the mounting seat is provided with a connecting shaft, and the connecting shaft is rotatably connected to the protective arm fixing frame. The purpose of the present invention is to provide a protective arm with an adjustment function, which can be rotated in the vertical direction to adjust the angle and height of the protection range, thereby improving the universal applicability of the protective arm.

Description

Technical Field

[0001] The invention relates to the field of automated mechanical equipment, and in particular to a protective arm with an adjustment function. Background Art

[0002] Industrial vehicles refer to power-driven motor vehicles used to transport, push, pull, lift, stack or stack various goods. Common industrial vehicles include forklifts, side forklifts, tractors, etc.

[0003] When an industrial vehicle is driving, the operator needs to stand on the pedal to operate the vehicle. At this time, a protective arm is needed to protect the employee. The existing protective arm design is relatively simple. On the one hand, the protective arm is easy to swing left and right, which is not conducive to the protection of employees. On the other hand, the protective arm itself is made of metal material, and the contact with the employee is rigid, which is easy to cause discomfort.

[0004] In addition, in the design of the protective arm, the height position of the existing protective arm is often fixed and cannot be adjusted. In actual operation, due to the different heights of users, the ranges required for protection are also different, and the protective arm that cannot adjust the height and protection angle has many inconveniences. Summary of the invention

[0005] The purpose of the present invention is to provide a protective arm with an adjustment function, which can be rotated in the vertical direction to adjust the angle and height of the protective range, thereby improving the universal applicability of the protective arm.

[0006] The above technical purpose of the present invention is achieved through the following technical solutions: a protective arm with an adjustment function, comprising a protective arm fixing frame and an arm body, a mounting seat is installed on the protective arm fixing frame, and the arm body is rotatably connected to the mounting seat. The protective arm also comprises a flip self-locking device, one end of the flip self-locking device is hinged to the protective arm fixing frame, and the other end is hinged to the arm body. The flip self-locking device drives the arm body to open and close relative to the protective arm fixing frame. A connecting shaft is provided on the mounting seat, and the connecting shaft is rotatably connected to the protective arm fixing frame.

[0007] As a preferred embodiment of the present invention, the connecting shaft drives the mounting seat to flip in the vertical direction.

[0008] As a preferred embodiment of the present invention, the protective arm with adjustment function further comprises a flip locking device for locking the flip angle of the arm body in the vertical direction.

[0009] As a preferred embodiment of the present invention, a through groove is provided on the mounting seat, the flip locking device includes a spring located in the through groove and a positioning bead located at the end of the spring, and a positioning hole for the positioning bead to be inserted into is provided on the protective arm fixing frame.

[0010] As a preferred embodiment of the present invention, the positioning hole includes a high-position positioning hole and a low-position positioning hole whose height is lower than that of the high-position positioning hole, there are two positioning beads, which are respectively located on both sides of the spring, and the positioning beads include a high-position positioning bead and a low-position positioning bead.

[0011] As a preferred embodiment of the present invention, the flipping direction of the arm is horizontal.

[0012] As a preferred embodiment of the present invention, the flip self-locking device includes a hinge point 1 rotatably connected to the protective arm fixing frame, a hinge point 2 rotatably connected to the arm body, and a push rod connecting the hinge point 1 and the hinge point 2, and the push rod is retractable.

[0013] As a preferred embodiment of the present invention, when the arm body is in a self-locking state, the projections of the connection point between the arm body and the mounting seat, the first hinge point and the second hinge point on the horizontal plane are located on the same straight line.

[0014] As a preferred embodiment of the present invention, the push rod is a gas spring push rod.

[0015] As a preferred embodiment of the present invention, the arm bodies are in two sets and are arranged facing each other.

[0016] In summary, the present invention has the following beneficial effects:

[0017] 1. The arm can be flipped open and closed, which makes the space utilization more efficient.

[0018] 2. The arm has a self-locking function to improve the stability of the arm opening angle locking.

[0019] 3. The cushion can provide cushioning when the arm is closed and when the arm contacts the worker's body.

[0020] 4. The entire arm can be adjusted and rotated in the vertical direction to adjust the changes in the protection range.

[0021] 5. The positioning beads and the positioning holes can lock the flip angle of the arm in the vertical direction. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 is a schematic diagram of Example 1;

[0023] Figure 2 yes Figure 1 Schematic diagram of the closure of the mid-arm body;

[0024] Figure 3 yes Figure 1 A magnified detail of the center point A;

[0025] Figure 4 Schematic diagram of the flip lock device.

[0026] In the figure:

[0027] 1. Protective arm fixing frame, 11. Positioning hole, 111. High-position positioning hole, 112. Low-position positioning hole, 2. Mounting seat, 24. Connecting shaft, 3. Arm body, 31. Buffer pad, 4. Vertical connecting shaft, 5. Flip self-locking device, 51. Hinge point one, 52. Push rod, 53. Hinge point two, 7. Flip locking device, through slot, 71. Positioning bead, 72. Spring, 711. High-position positioning bead, 712. Low-position positioning bead. DETAILED DESCRIPTION

[0028] The present invention is further described in detail below in conjunction with the accompanying drawings.

[0029] This specific embodiment is merely an explanation of the present invention and is not a limitation of the present invention. After reading this specification, those skilled in the art may make non-creative modifications to the present embodiment as needed. However, as long as they are within the scope of the claims of the present invention, they are protected by the patent law.

[0030] Embodiment 1, as Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, a protective arm with an adjustment function includes a protective arm fixing frame 1, which is a main bracket and a main fixing component installed on an industrial vehicle. The protective arm fixing frame 1 is generally provided with corresponding digital keys, start and brake buttons, etc.

[0031] A mounting seat 2 is mounted on the protective arm fixing frame 1, and the mounting seat 2 is connected to the arm body 3. The arm body 3 is also connected to the protective arm fixing frame 1 through a flip self-locking device 5.

[0032] Specifically, the arm body 3 is two sets, one on the left and one on the right, arranged on both sides. The flip self-locking device 5 includes at least three parts, namely, a hinge point 1 51, a push rod 52 and a hinge point 2 53. Among them, the push rod 52 can use a gas spring to provide a continuous and uniform thrust. The hinge point 1 51 is hinged to the protective arm fixing frame 1, and the hinge point 2 53 is hinged to the mounting seat. In the process of opening the arm body 3, when the connection point of the arm body 3 and the mounting seat 2, the projections of the hinge point 1 51 and the hinge point 2 53 on the horizontal plane are located on the same straight line, the self-locking dead point state is reached at this time, and the arm body 3 will not be easily pushed again. This opening angle is generally between 30° and 60°, and the opening angle corresponding to this self-locking state is also the holding angle of the arm body 3 during operation. The operator stands in the protection interval formed by the two inclined arm bodies 3 to operate. When the worker needs to continue to open the arm body 3, it is necessary to rotate the arm body 3 more vigorously, and the arm body 3 continues to flip outwards beyond the angle of the dead point self-locking. The arm body 3 is provided with a cushion 31, which provides a cushion when closing and also provides a cushion when contacting with the worker's body. The arm body 3 is rotatably connected to the mounting base 2 through a vertical connecting shaft 4, so that the arm body 3 can be opened and closed in the horizontal direction relative to the mounting base 2.

[0033] like Figure 3 As shown, the mounting base 2 and the protective arm fixing frame 1 are not fixedly connected, but a connecting shaft 24 extending in the horizontal direction is provided on the mounting base 2, and the connecting shaft 24 is rotatably connected to the protective arm fixing frame 1, so that the entire mounting base 2 can rotate in the vertical direction, thereby driving the entire arm body 3 to rotate in the vertical direction.

[0034] When it is necessary to lock the flip angle of the mounting base 2 and the arm body 3 in the vertical direction, the flip locking device 7 is required. Specifically, a through slot can be opened at the lower position of the mounting base 2, and the flip locking device 7 can be installed in the through slot. Figure 4 As shown, the flip lock device 7 includes a spring 72 and a high-position positioning bead 711 and a low-position positioning bead 712 at both ends, and both positioning beads 71 ​​are subjected to the outward elastic force of the spring 72. When the entire mounting seat 2 is rotated into position, the corresponding positioning bead 71 is ejected by the elastic force and stuck in the corresponding positioning hole 11, preventing the mounting seat 2 from continuing to rotate, and completing the position fixation.

[0035] In the present technical solution, there are two positioning holes 11, one on the left and one on the right, located on both sides of the mounting seat 2, and opened on the protective arm fixing frame 1. The two positioning holes 11 are respectively a high-position positioning hole 111 and a low-position positioning hole 112, which are located at different heights. When the entire mounting seat 2 and the arm body 3 rotate to a high position, the spring 72 pushes out the high-position positioning bead 711 and snaps into the high-position positioning hole 111. When the entire mounting seat 2 and the arm body 3 rotate to a low position, the spring 72 pushes out the low-position positioning bead 712 and snaps into the low-position positioning hole 112.

Claims

1. A protective arm with an adjustable function, comprising a protective arm fixing frame (1) and an arm body (3), characterized in that: The protective arm fixing frame (1) is provided with a mounting seat (2), the arm body (3) is rotatably connected to the mounting seat (2), the protective arm further comprises a flip self-locking device (5), one end of the flip self-locking device (5) is hinged to the protective arm fixing frame (5), and the other end is hinged to the arm body (3), the flip self-locking device (5) drives the arm body (3) to open and close relative to the protective arm fixing frame (1), the mounting seat (2) is provided with a connecting shaft (21), the connecting shaft (21) is rotatably connected to the protective arm fixing frame (1), the connecting shaft (21) drives the mounting seat (2) to flip in the vertical direction, the protective arm with an adjustment function further comprises a flip locking device (7) for locking the flip angle of the arm body (3) in the vertical direction, the mounting seat (2) is provided with a through slot, the flip locking device (7) comprises a through slot located in the through slot. A spring (72) and a positioning bead (71) located at the end of the spring (72); a positioning hole (11) for the positioning bead (71) to be inserted into the protective arm fixing frame (1); the positioning hole (11) includes a high-position positioning hole (111) and a low-position positioning hole (112) whose height is lower than the high-position positioning hole (111); there are two positioning beads (71), which are located on both sides of the spring (72), respectively; the positioning beads (71) include a high-position positioning bead (711) and a low-position positioning bead (712); the flipping direction of the arm body (3) is horizontal; the flipping self-locking device (5) includes a hinge point 1 (51) rotatably connected to the protective arm fixing frame (1), a hinge point 2 (53) rotatably connected to the arm body (3), and a push rod (52) connecting the hinge point 1 (51) and the hinge point 2 (53); the push rod (52) is retractable.

2. The protective arm with adjustment function according to claim 1, characterized in that: When the arm body (3) is in a self-locking state, the projections of the connection point between the arm body (3) and the mounting seat (2), the first hinge point (51) and the second hinge point (53) on a horizontal plane are located on the same straight line.

3. The protective arm with adjustment function according to claim 2, characterized in that: The push rod (52) is a gas spring push rod.

4. The protective arm with adjustment function according to claim 1, characterized in that: The arm bodies (3) are composed of two sets, which are arranged facing each other.

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