Anti-collision buffer device of crane

Abstract

The utility model relates to an anti-collision buffer device of a crane, and belongs to the technical field of hoisting machinery. The buffering structure is located on the supporting cross beam, the reverse thrust structure is installed on the outer side of the support, and the reverse thrust structure and the buffering structure are connected together. The device has the advantages that when the main machine moves towards the two sides, the main machine firstly collides with the second buffer plate, the second buffer plate is extruded to move towards the side edge and starts to compress the buffer spring, at the moment, the pressure sensor starts to bear force, and when the pressure sensor detects that the borne force is larger than set pressure, the reverse thrust oil cylinder is started, and the reverse thrust oil cylinder is started. The reverse thrust oil cylinder pushes the first buffer plate to move towards the second buffer plate, so that the main machine is prevented from continuously moving, at the moment, the pressure sensor is compressed to the protection frame to be protected, thrust opposite to the moving direction of the main machine is provided through the reverse thrust structure, inertia generated when the main machine moves is counteracted, and the main machine is prevented from colliding with the support to cause loss.

Description

Technical Field

[0001] The utility model relates to an anti-collision buffer device for a crane, belonging to the technical field of lifting machinery. Background Art

[0002] A crane is a multi-action lifting machine that lifts and transports heavy objects vertically and horizontally within a certain range. A gantry crane, also known as a gantry crane, is a variant of the crane. Gantry cranes offer high site utilization, a large operating range, wide adaptability, and strong versatility, making them widely used in port cargo yards. During actual operation, gantry cranes can sometimes experience operator error, causing the trolley mechanism to exceed its limit when moving to the side, resulting in collisions between the trolley and the limit blocks, causing damage to the trolley.

[0003] In response to the above problems, corresponding solutions have emerged in the industry, such as the Chinese authorized utility model patent with the authorization announcement number: CN220745149 U, and the patent name: A collision avoidance device for overhead crane and hoisting equipment. In the above patent, an collision avoidance mechanism is set, and the collision avoidance structure includes a buffer plate and a spring. The main body of the crane is buffered by the spring, thereby achieving the effect of collision avoidance and buffering.

[0004] However, in the aforementioned patent, when the crane body is moving, it first collides with the buffer plate, which then compresses the spring. The compression of the spring offsets the inertia generated by the movement of the crane body. During this process, if the inertia generated by the crane body is too large due to the high speed, the spring cannot completely offset the inertia of the crane body. The crane body will then apply the remaining inertial force to the crane support, causing damage to the support and even the possibility of it flying off the traveling beam, causing a serious accident. At the same time, in the aforementioned patent, the spring loses its elasticity after long-term use, resulting in a shorter buffer stroke. However, the aforementioned patent does not provide a corresponding detection device, requiring staff to frequently inspect and repair it, which increases the staff's workload. Summary of the Invention

[0005] The technical problem to be solved by the utility model is to provide an anti-collision buffer device for a crane to solve the problems faced in the industry.

[0006] In order to solve the above technical problems, the utility model is realized through the following technical solutions: a crane anti-collision buffer device, comprising a bracket, a supporting beam is arranged on the inner side of the bracket, a main machine is arranged on the supporting beam, the main machine moves along the supporting beam, a hook is arranged on the main machine, and anti-collision buffer devices are respectively arranged on the left and right sides of the supporting beam, the anti-collision buffer device includes a buffer structure and a reverse thrust structure, the buffer structure is located on the supporting beam, the reverse thrust structure is installed on the outer side of the bracket, and the reverse thrust structure is connected together with the buffer structure.

[0007] Preferably, the buffer structure includes a first buffer plate and a second buffer plate arranged parallel to each other, a plurality of buffer springs are arranged between the first buffer plate and the second buffer plate, and a pressure sensor is further arranged between the second buffer plate and the second buffer plate.

[0008] Preferably, a plurality of guide rods are provided on the left side of the first buffer plate, and a plurality of guide holes are provided on the bracket, and the guide rods are inserted into the guide holes.

[0009] Preferably, the reverse thrust structure includes a reverse thrust cylinder, which is mounted on the outside of the bracket through a cylinder bracket. The bracket is provided with a cylinder shaft insertion hole, and the cylinder shaft of the reverse thrust cylinder is inserted into the cylinder insertion hole and connected to the buffer structure.

[0010] Preferably, a protective shell is sleeved on the host, and a plurality of shock-absorbing plates are provided between the protective shell and the host.

[0011] Preferably, the supporting beam and the bracket are provided with a plurality of oblique supports.

[0012] Compared with the existing technology, the benefits of the present invention are: when in use, when the main machine moves to both sides, it first collides with the second buffer plate, and the second buffer plate is squeezed and moves to the side, and begins to compress the buffer spring. At this time, the pressure sensor begins to be subjected to force. When the pressure sensor detects that the force it receives is greater than the set pressure, the reverse thrust cylinder is started, and the reverse thrust cylinder pushes the first buffer plate toward the second buffer plate, thereby preventing the main machine from continuing to move. At this time, the pressure sensor is compressed into the protective frame for protection, and a thrust opposite to the moving direction of the main machine is provided through the reverse thrust structure to offset the inertia of the main machine when moving, and prevent the main machine from colliding with the bracket and causing losses. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The present invention will be further described below with reference to the accompanying drawings.

[0014] Figure 1 It is a structural diagram of the present utility model.

[0015] Figure 2 It is a structural schematic diagram of the utility model after the reverse thrust cylinder is started.

[0016] Figure 3 It is a structural diagram of the bracket.

[0017] Figure 4 It is a schematic diagram of the buffer structure.

[0018] Figure 5 It is a schematic diagram of the reverse thrust structure.

[0019] Figure 6 It is a structural diagram of the protective shell and the shock-absorbing plate.

[0020] In the figure: bracket 1; guide hole 101; cylinder shaft insertion hole 102; supporting beam 2; oblique support 201; main unit 3; protective shell 301; shock absorbing plate 302; hook 4; anti-collision buffer device 5; buffer structure 6; first buffer plate 601; second buffer plate 602; buffer spring 603; pressure sensor 604; guide rod 605; protective frame 606; insertion port 607; reverse thrust structure 7; reverse thrust cylinder 701; cylinder bracket 702. DETAILED DESCRIPTION

[0021] The present invention is described in detail below with reference to the accompanying drawings and specific embodiments:

[0022] like Figures 1 to 6 The anti-collision buffer device of a crane shown in the figure includes a bracket 1, a supporting beam 2 is provided on the inner side of the bracket 1, a main machine 3 is provided on the supporting beam 2, the main machine 3 moves along the supporting beam 2, a hook 4 is provided on the main machine 3, and anti-collision buffer devices 5 are respectively provided on the left and right sides of the supporting beam 2. The anti-collision buffer device 5 includes a buffer structure 6 and a reverse thrust structure 7. The buffer structure 6 is located on the supporting beam 2, and the reverse thrust structure 7 is installed on the outer side of the bracket 1. The reverse thrust structure 7 is connected to the buffer structure 6.

[0023] In order to achieve the purpose of buffering, the buffer structure 6 further includes a first buffer plate 601 and a second buffer plate 602 arranged parallel to each other, a plurality of buffer springs 603 are arranged between the first buffer plate 601 and the second buffer plate 602, and a pressure sensor 604 is also arranged between the first buffer plate 601 and the second buffer plate 602.

[0024] For the purpose of guidance, a plurality of guide rods 605 are further provided on the left side of the first buffer plate 601 , and a plurality of guide holes 101 are provided on the bracket 1 , and the guide rods 605 are inserted into the guide holes 101 .

[0025] In order to protect the pressure sensor 604 and prevent the pressure sensor 604 from being squeezed and damaged, a hollow protective frame 606 is further provided on the right side of the first buffer plate 601, and an insertion port 607 is provided on the right side of the protective frame 606. One end of the pressure sensor 604 is connected to the interior of the protective frame 606 through the insertion port 607, and the other end is connected to the second buffer plate 602.

[0026] In order to offset the inertia generated by the main machine 3 during movement, the reverse thrust structure 7 further includes a reverse thrust cylinder 701, which is installed on the outside of the bracket 1 through a cylinder bracket 702. The bracket 1 is provided with a cylinder shaft insertion hole 102, and the cylinder shaft of the reverse thrust cylinder 701 is inserted into the cylinder insertion hole 102 and connected to the buffer structure 6.

[0027] In order to protect the host 3 , a protective shell 301 is further sleeved on the host 3 , and a plurality of shock-absorbing plates 302 are provided between the protective shell 301 and the host 3 .

[0028] In order to improve stability, the support beam 2 and the bracket 1 are further provided with a plurality of oblique supports 201 .

[0029] During use, when the main machine 3 moves out of control to the sides of the supporting beam 2, the main machine 3 will first collide with the second buffer plate 602, and at the same time drive the second buffer plate 602 to move to both sides. During the movement, the second buffer plate 602 squeezes the buffer spring 603. During the compression process, the buffer spring 603 unloads the impact force of the main machine 3 when it moves. The main machine 3 continues to compress the buffer spring 603 during the movement. In the above process, the pressure sensor 604 is also squeezed. When the pressure value detected by the pressure sensor 604 reaches the set value, the pressure sensor 604 sends a signal to the reverse thrust cylinder 701 on the reverse thrust structure 7. The reverse thrust cylinder 701 01 are started at the same time. Since the buffer structure 6 is connected to the reverse thrust cylinder 701 through the first buffer plate 601, the reverse thrust cylinder 701 pushes the first buffer plate 601 to move toward the main machine 3. At this time, the two ends of the buffer spring 603 are squeezed respectively. When the buffer spring 603 is compressed to the limit, the first buffer plate 601 and the second buffer plate 602 form a whole. At the same time, the reverse thrust cylinder 701 pushes the entire buffer structure 6 to move in the opposite direction of the main machine 3. The above method gives the main machine 3 a reverse thrust to offset the inertia of the main machine 3, preventing the main machine 3 from losing control and hitting the bracket or even falling off the supporting beam 2, reducing losses and improving overall safety.

[0030] After the danger of the host 3 losing control is eliminated, the first buffer plate 601 and the second buffer plate 602 are reset to their original positions by the buffer spring 603. At this time, the pressure sensor 604 located between the first buffer plate 601 and the second buffer plate 602 will also detect a pressure value. If the pressure sensor 604 detects that the pressure value is within the set range at this time, it means that the elasticity of the buffer spring 603 is normal, which means that the distance between the first buffer plate 601 and the second buffer plate 602 is normal. If the pressure sensor 604 detects that the pressure value is not within the set range at this time, it means that the elasticity of the buffer spring 603 is abnormal, which means that the distance between the first buffer plate 601 and the second buffer plate 602 is abnormal, which means that the buffer spring 603 needs to be replaced to prevent affecting the buffer stroke of the device. Through the above method, the problem that there is no corresponding detection device in the prior art, and the staff needs to frequently inspect it, which increases the workload of the staff is solved.

[0031] It should be emphasized that the above are only preferred embodiments of the present invention and do not constitute any form of limitation to the present invention. Any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention still fall within the scope of the technical solution of the present invention.

Claims

1. A crane anti-collision buffer device, comprising a bracket (1), a support beam (2) provided on the inner side of the bracket (1), a main machine (3) provided on the support beam (2), the main machine (3) moving along the support beam (2), and a hook (4) provided on the main machine (3), characterized in that: Anti-collision buffer devices (5) are respectively provided on the left and right sides of the support beam (2), and the anti-collision buffer device (5) includes a buffer structure (6) and a reverse thrust structure (7). The buffer structure (6) is located on the support beam (2), and the reverse thrust structure (7) is installed on the outside of the bracket (1). The reverse thrust structure (7) and the buffer structure (6) are connected together.

2. The anti-collision buffer device for a crane according to claim 1, characterized in that: The buffer structure (6) comprises a first buffer plate (601) and a second buffer plate (602) arranged parallel to each other, a plurality of buffer springs (603) are arranged between the first buffer plate (601) and the second buffer plate (602), and a pressure sensor (604) is also arranged between the first buffer plate (601) and the second buffer plate (602).

3. The anti-collision buffer device for a crane according to claim 2, characterized in that: A plurality of guide rods (605) are provided on the left side of the first buffer plate (601), a plurality of guide holes (101) are provided on the bracket (1), and the guide rods (605) are inserted into the guide holes (101).

4. The anti-collision buffer device for a crane according to claim 3, characterized in that: A hollow protective frame (606) is provided on the right side of the first buffer plate (601), and an insertion port (607) is provided on the right side of the protective frame (606). One end of the pressure sensor (604) is connected to the interior of the protective frame (606) through the insertion port (607), and the other end is connected to the second buffer plate (602).

5. The anti-collision buffer device for a crane according to claim 1, characterized in that: The reverse thrust structure (7) comprises a reverse thrust cylinder (701), which is mounted on the outside of the bracket (1) via a cylinder bracket (702). The bracket (1) is provided with a cylinder shaft insertion hole (102), and the cylinder shaft of the reverse thrust cylinder (701) is inserted into the cylinder insertion hole (102) and connected to the buffer structure (6).

6. The anti-collision buffer device for a crane according to claim 1, characterized in that: A protective shell (301) is sleeved on the host (3), and a plurality of shock-absorbing plates (302) are provided between the protective shell (301) and the host (3).

7. The anti-collision buffer device for a crane according to claim 1, characterized in that: The supporting crossbeam (2) and the bracket (1) are provided with a plurality of oblique supports (201).

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