Hinge pin anti-falling device for lifting beam

Abstract

The utility model belongs to the technical field of hoisting beams, and particularly relates to a pin shaft anti-dropping device for a hoisting beam, which comprises a hoisting arm which is rotatably connected with a beam body, a pin shaft body is arranged between the hoisting arm and the beam body, the pin shaft body penetrates through the hoisting arm and the beam body and is rotatably connected with the hoisting arm and the beam body, and a locking structure is arranged on the pin shaft body. The locking structure is arranged, the arc-shaped pieces distributed along the outer contour of the pin shaft body in the annular array mode are matched with the annular grooves formed in the pin shaft body, firm clamping between the pin shaft body and the beam body and between the pin shaft body and the lifting arm is achieved, the pin shaft body is effectively prevented from easily falling off in the rotating process of the lifting arm, and the safety of the lifting arm is improved. Safety accidents such as equipment damage and weight falling caused by falling of the pin shaft body are avoided, meanwhile, the arc-shaped pieces abut against the annular grooves of the pin shaft body in the horizontal direction, and the stability of the pin shaft body is further enhanced.

Description

Technical Field

[0001] This utility model relates to the field of lifting beam technology, and in particular to a pin anti-detachment device for lifting beams. Background Technology

[0002] The lifting beam works in conjunction with the monorail crane for material transport. The lifting boom is installed on the lifting beam, and the lifting booms are generally connected by pins, which gives the lifting boom a rotating function. The rotating function of the lifting boom allows it to move freely in three-dimensional space, thereby easily adjusting the direction and position of the lifted object. This allows the lifting boom to quickly adapt to different working environments and operational needs, and quickly complete the handling of materials or equipment.

[0003] Currently, the pins are prone to falling off during rotation. The falling off of the pins makes the lifting equipment unstable, increases safety risks, makes it difficult to ensure a firm engagement between the pins and the beam and the boom, and makes it difficult to prevent the pins from falling off easily during the rotation of the boom.

[0004] To address the aforementioned technical shortcomings, a solution is proposed. Utility Model Content

[0005] The purpose of this utility model is to provide a pin anti-detachment device for lifting beams. By setting a locking structure, a firm engagement between the pin body and the beam and lifting arm is achieved, effectively preventing the pin body from easily falling off during the rotation of the lifting arm. This avoids safety accidents such as equipment damage and falling objects caused by the pin body falling off, enhances the stability of the pin body, and solves the problems mentioned in the background art.

[0006] The purpose of this utility model can be achieved through the following technical solution: a lifting beam anti-detachment device, including a lifting arm that is rotatably connected to the beam body, a pin body is provided between the lifting arm and the beam body, the pin body passes through the lifting arm and the beam body and is rotatably connected to the lifting arm and the beam body, and a locking structure is provided on the pin body;

[0007] The locking structure includes multiple arc-shaped pieces arranged in a ring array along the outer contour of the pin body. An annular groove is formed on the outer wall of the pin body to engage with the multiple arc-shaped pieces. A sliding seat is provided on one side of the top of the pin body in a vertical direction. A fixed seat is connected to the sliding seat through and fixedly. Two positioning blocks are horizontally slidably connected in the fixed seat. The upper surface of the pin body has positioning grooves that abut against the two positioning blocks.

[0008] Preferably, the arc-shaped piece is located in a circular groove opened on the surface of the beam, and each arc-shaped piece has a mounting hole on its surface.

[0009] Preferably, a mounting bracket is provided on one side of the screw, the mounting bracket is located on one side of the beam and is rotatably connected to the surface of the beam, and a groove is provided on the surface of the mounting bracket for vertical sliding connection of the screw.

[0010] Preferably, a screw is rotatably connected to the sliding groove of the mounting bracket, the screw passes through the sliding seat and is screwed to the sliding seat, and the top end of the sliding seat passes through the mounting bracket and is fixedly connected to a handle.

[0011] Preferably, the inner wall of the fixing seat is provided with an installation groove, and a limit strip is fixedly connected to the inner wall of the installation groove of the fixing seat. The limit strip passes through the positioning block and is slidably connected to the positioning block in the horizontal direction.

[0012] Preferably, a limiting block is vertically slidably connected in the mounting groove of the fixed seat, and a second screw is rotatably connected to the upper surface of the limiting block. The second screw passes through the fixed seat and is screwed to the fixed seat. A movable connecting rod is movably connected to the lower surface of the limiting block, and the end of the movable connecting rod away from the limiting block is movably connected to the positioning block.

[0013] The beneficial effects of this utility model are:

[0014] (1) Through the locking structure, multiple arc-shaped pieces arranged in a ring array along the outer contour of the pin body cooperate with the ring groove opened on the pin body to achieve a firm engagement between the pin body and the beam and the lifting arm. This effectively prevents the pin body from easily falling off during the rotation of the lifting arm, avoiding safety accidents such as equipment damage and falling objects caused by the pin body falling off. At the same time, the arc-shaped pieces abut against the ring groove of the pin body in the horizontal direction, further enhancing the stability of the pin body.

[0015] (2) The vertical movement of the fixed seat as a whole precisely adjusts the vertical position of the pin body, greatly simplifying the installation process and making it easier for the arc-shaped piece to engage with the annular groove on the pin body, ensuring a firm connection between the pin body and the beam and the lifting arm. Attached Figure Description

[0016] The present invention will be further described below with reference to the accompanying drawings;

[0017] Figure 1 This utility model has a three-dimensional overall structure. Figure 1 ;

[0018] Figure 2 This is a schematic cross-sectional view of the present invention;

[0019] Figure 3 This is a schematic diagram of the pin structure of this utility model;

[0020] Figure 4This is a schematic diagram of the sliding seat structure of this utility model;

[0021] Figure 5 This is a schematic diagram of the fixed base structure of this utility model.

[0022] Legend: 1. Lifting arm; 2. Pin body; 3. Arc-shaped piece; 4. Positioning groove; 5. Mounting bracket; 6. Screw one; 7. Sliding seat; 8. Fixed seat; 9. Positioning block; 10. Limiting strip; 11. Movable connecting rod; 12. Limiting block; 13. Screw two. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Example 1: This example is used to solve the problem that the existing connection method using a rotating pin is difficult to guarantee a firm engagement between the pin and the beam and the lifting arm, and it is difficult to prevent the pin from easily falling off during the rotation of the lifting arm.

[0025] Please see Figure 1 - Figure 5 As shown, this embodiment is a pin anti-detachment device for lifting beams, including a lifting arm 1 rotatably connected to the beam body, a pin body 2 is provided between the lifting arm 1 and the beam body, the pin body 2 passes through the lifting arm 1 and the beam body and is rotatably connected to the lifting arm 1 and the beam body, and a locking structure is provided on the pin body 2.

[0026] The locking structure includes multiple arc-shaped pieces 3 arranged in a ring array along the outer contour of the pin body 2. The cross-section of the pin body 2 is an inverted T-shape. The outer wall of the pin body 2 is provided with an annular groove that engages with the multiple arc-shaped pieces 3. The arc-shaped pieces 3 abut against the annular groove of the pin body 2 in the horizontal direction.

[0027] When the arc-shaped piece 3 is fixed, it can fix the pin body 2 in the vertical direction, preventing the pin body 2 from easily separating from the lifting arm 1 and the beam, thus ensuring that the lifting arm 1 is difficult to separate from the beam when rotating. A sliding seat 7 is provided on one side of the top of the pin body 2 in the vertical direction. The sliding seat 7 is penetrated and fixedly connected to a fixed seat 8. Two positioning blocks 9 are horizontally slidably connected in the fixed seat 8. The upper surface of the pin body 2 has a positioning groove 4 that abuts against the two positioning blocks 9.

[0028] The two positioning blocks 9 move horizontally and abut against the positioning groove 4. When the two positioning blocks 9 move vertically, the vertical height of the pin body 2 can be adjusted, so that multiple arc-shaped pieces 3 can engage with the annular groove of the pin body 2, positioning the pin body 2 vertically and preventing the pin body 2 from moving or detaching in the vertical direction. At the same time, it is convenient for installation, disassembly and maintenance.

[0029] The arc-shaped piece 3 is located in the circular groove opened on the surface of the beam, and each arc-shaped piece 3 has a mounting hole on its surface. The arc-shaped piece 3 is fixedly installed by bolting through the mounting holes opened on the surface of the beam. Both ends of the arc-shaped piece 3 are provided with arc transitions to facilitate installation.

[0030] A mounting bracket 5 is provided on one side of the pin body 2. The mounting bracket 5 is located on one side of the beam and is rotatably connected to the surface of the beam. The surface of the mounting bracket 5 is provided with a groove for the vertical sliding connection of the screw 6. By rotating the mounting bracket 5, the screw 6, which is vertically slidably connected to it, moves away from the top of the pin body 2, making it easier to put the arc-shaped piece 3 into the circular groove opened on the surface of the beam.

[0031] A screw 6 is rotatably connected to the mounting bracket 5 within its groove. The screw 6 passes through and is screwed onto the sliding seat 7. The top of the sliding seat 7 passes through the mounting bracket 5 and is fixedly connected to a handle. Rotating the handle fixedly connected to the screw 6 causes the sliding seat 7 to move vertically. When the two positioning blocks 9 abut against the inner wall of the positioning groove 4, the sliding seat 7 moves vertically. The friction between the positioning blocks 9 and the inner wall of the positioning groove 4 pulls the pin body 2 to move vertically, thereby facilitating the adjustment and positioning of the vertical position of the pin body 2. This also facilitates pushing the arc-shaped piece 3 in the circular groove of the beam into the annular groove on the outer wall of the pin body 2.

[0032] Example 2: This example is used to solve the problem of difficulty in adjusting the position of the pin and fully positioning the pin.

[0033] Please see Figure 1 , Figure 5 As shown in the figure, in this embodiment, a lifting beam anti-detachment device for a pin has an installation groove on the inner wall of the fixed base 8. A limit strip 10 is fixedly connected to the inner wall of the installation groove of the fixed base 8. The limit strip 10 passes through the positioning block 9 and is slidably connected to the positioning block 9 in the horizontal direction. The limit strip 10 limits the movement direction of the two positioning blocks 9, so that they can stably slide in the horizontal direction.

[0034] A limiting block 12 is vertically slidably connected in the mounting groove of the fixed base 8. A screw 13 is rotatably connected to the upper surface of the limiting block 12. The screw 13 passes through the fixed base 8 and is screwed to the fixed base 8. A movable connecting rod 11 is movably connected to the lower surface of the limiting block 12. The end of the movable connecting rod 11 away from the limiting block 12 is movably connected to the positioning block 9. Connecting heads are fixedly connected to the opposite ends of the positioning block 9 and the limiting block 12. The connecting heads are movably connected to the movable connecting rod 11 through a rotating shaft. Rotating the screw 13 causes the limiting block 12 to move in the opposite direction vertically.

[0035] When the limiting block 12 moves vertically downward, it can push the movable connecting rod 11. The movable connecting rod 11 pushes the two positioning blocks 9 to move in opposite directions. The two positioning blocks 9 abut against the inner wall of the positioning groove 4 on the pin body 2, thereby positioning the pin body 2. When the fixed seat 8 moves vertically as a whole, it can adjust the vertical position of the pin body 2 to ensure that the arc-shaped piece 3 can engage with the annular groove opened on the pin body 2.

[0036] Combining Example 1 and Example 2

[0037] Through the locking structure, multiple arc-shaped pieces 3 arranged in a ring array along the outer contour of the pin body 2 engage with the annular groove on the pin body 2, achieving a firm engagement between the pin body 2 and the beam and the lifting arm 1. This effectively prevents the pin body 2 from easily falling off during the rotation of the lifting arm 1, avoiding safety accidents such as equipment damage and falling objects caused by the pin body 2 falling off. At the same time, the arc-shaped pieces 3 abut against the annular groove on the pin body 2 in the horizontal direction, further enhancing the stability of the pin body 2. By moving the entire fixed seat 8 in the vertical direction, the vertical position of the pin body 2 can be precisely adjusted, greatly simplifying the installation process and making it easier for the arc-shaped pieces 3 to engage with the annular groove on the pin body 2, ensuring a firm connection between the pin body 2 and the beam and the lifting arm 1.

[0038] like Figure 1 - Figure 5 As shown, the working process and principle of this utility model are as follows:

[0039] Step 1: Place multiple arc-shaped pieces 3 into the circular grooves opened on the surface of the beam. Rotate the mounting bracket 5 located on the beam so that the fixed seat 8 is located on the top side of the pin body 2. Rotate the handle fixedly connected to the screw 1 6, and the sliding seat 7 moves vertically and makes the positioning block 9 located in the positioning groove 4 opened on the pin body 2. Then rotate the handle fixedly connected to the screw 2 13, and the limiting block 12 moves vertically downward, pushing the movable connecting rod 11. The movable connecting rod 11 pushes the two positioning blocks 9 to move in opposite directions, and the two positioning blocks 9 abut against the inner wall of the positioning groove 4 on the pin body 2.

[0040] Step 2: Rotate screw 6 again to make sliding seat 7 drive fixed seat 8 to move vertically. Under the action of friction, adjust the vertical position of pin body 2 to ensure that arc plate 3 can engage with the annular groove on pin body 2. Then, position pin body 2 with bolts.

[0041] The above description is merely an example and illustration of the structure of the present invention. Those skilled in the art can make various modifications or additions to the specific embodiments described, or use similar methods to replace them, as long as they do not deviate from the structure of the invention or exceed the scope defined in the claims, all of which should fall within the protection scope of the present invention.

[0042] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0043] The preferred embodiments of the present invention disclosed above are merely illustrative of the invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the invention to specific implementations. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the invention, thereby enabling those skilled in the art to better understand and utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. A pin-based anti-derailment device for lifting beams, comprising a rotatably connected lifting arm (1) connected to the beam body, characterized in that, A pin body (2) is provided between the lifting arm (1) and the beam. The pin body (2) passes through the lifting arm (1) and the beam and is rotatably connected to the lifting arm (1) and the beam. A locking structure is provided on the pin body (2). The locking structure includes multiple arc-shaped pieces (3) arranged in a ring array along the outer contour of the pin body (2). The outer wall of the pin body (2) is provided with an annular groove that engages with the multiple arc-shaped pieces (3). A sliding seat (7) is provided on one side of the top of the pin body (2) and is slidably connected in the vertical direction. A fixed seat (8) is connected through the sliding seat (7). Two positioning blocks (9) are slidably connected in the fixed seat (8). The upper surface of the pin body (2) has positioning grooves (4) that abut against the two positioning blocks (9).

2. The anti-derailment device for a lifting beam pin according to claim 1, characterized in that, The arc-shaped piece (3) is located in a circular groove on the surface of the beam, and each arc-shaped piece (3) has a mounting hole on its surface.

3. The anti-derailment device for a lifting beam pin according to claim 1, characterized in that, The pin body (2) is provided with a mounting bracket (5) on one side. The mounting bracket (5) is located on one side of the beam and is rotatably connected to the surface of the beam. The mounting bracket (5) has a groove on its surface for vertical sliding connection of the screw (6).

4. The anti-derailment device for a lifting beam according to claim 3, characterized in that, The mounting bracket (5) has a fixed-axis rotatable screw (6) in its groove. The screw (6) passes through the sliding seat (7) and is screwed to the sliding seat (7). The top of the sliding seat (7) passes through the mounting bracket (5) and is fixedly connected to a handle.

5. The anti-derailment device for a lifting beam according to claim 4, characterized in that, The inner wall of the fixed base (8) is provided with an installation groove, and a limit strip (10) is fixedly connected to the inner wall of the installation groove of the fixed base (8). The limit strip (10) passes through the positioning block (9) and is slidably connected to the positioning block (9) in the horizontal direction.

6. The anti-derailment device for a lifting beam pin according to claim 5, characterized in that, A limiting block (12) is vertically slidably connected in the mounting groove of the fixed seat (8). A screw (13) is rotatably connected to the upper surface of the limiting block (12). The screw (13) passes through the fixed seat (8) and is screwed to the fixed seat (8). A movable connecting rod (11) is movably connected to the lower surface of the limiting block (12). The end of the movable connecting rod (11) away from the limiting block (12) is movably connected to the positioning block (9).

Images