A laser collision avoidance device

Abstract

This invention discloses a laser anti-collision device, including a base plate with a through slot running from front to back. A laser rangefinder sensor is slidably connected within the slot. A guide rod that can slide back and forth is provided on the base plate, with its rear end fixedly connected to the laser rangefinder sensor. A first reset assembly for resetting the guide rod is installed between the guide rod and the base plate. A flip plate for blocking the through slot is rotatably connected to the base plate. A second reset assembly for resetting the flip plate is installed between the flip plate and the base plate. In the initial state, the laser rangefinder sensor pushes the flip plate to the front of the base plate and opens the through slot. As the guide rod moves backward, it drives the laser rangefinder sensor backward. Simultaneously, the flip plate, under the action of the second reset assembly, remains against the side wall of the laser rangefinder sensor. When the laser rangefinder sensor retracts into the through slot, the flip plate closes the through slot to prevent debris from damaging the laser rangefinder sensor during the impact.

Description

Technical Field

[0001] This invention relates to the field of safety device technology, and in particular, to a laser anti-collision device. Background Technology

[0002] Nowadays, large handling equipment is often used to assist in the transfer of goods during the handling process. Currently, large handling equipment includes heavy machinery such as overhead cranes, bridge cranes, cranes, and forklifts.

[0003] To improve the safety of machinery during cargo handling and prevent collisions between goods or the machinery itself and walls or other machines, laser or radar rangefinders need to be installed on the machinery. When the sensor detects a distance within a certain range, it can prompt the driver to slow down or brake, thereby improving the safety of cargo transfer.

[0004] Existing forklifts often need to reverse during material handling. These forklifts are equipped with laser rangefinders at the rear, primarily installed in two locations; location 1 is as follows: Figure 1 As shown in Figure A, the sensor is fixedly installed on the outer wall of the rear of the forklift and protrudes outward. The disadvantages of this installation method are as follows: when the forklift collides with the wall or other goods, the sensor will be squeezed by the forklift and the collision parts, which can easily cause damage to the sensor; the cost of replacing the sensor is more expensive than the repair cost of vehicle body damage, and the sensor needs to be protected.

[0005] Position 2 as Figure 1 As shown in B, the rear of the forklift typically has an inwardly recessed cavity 101, in which the sensor is installed. When the forklift collides, although the sensor is not squeezed, the rear of the forklift is impacted, causing damage to the forklift. At the same time, the sensor in the cavity 101 generally does not have a protective device, and debris from the impact process can easily splash onto the sensor, causing accidental damage to the sensor.

[0006] Therefore, how to design an anti-collision device to protect laser sensors has become a technical problem that urgently needs to be solved by those in the field. Summary of the Invention

[0007] In order to solve at least one of the technical problems mentioned in the background art, the present invention aims to provide a laser anti-collision device to solve the problem of damage to sensors or forklifts during a forklift reversing collision.

[0008] To achieve the above objectives, the present invention provides the following technical solution:

[0009] A laser anti-collision device includes a base plate with a through slot running from front to back. A laser rangefinder sensor is slidably connected within the through slot. A guide rod that can slide back and forth is provided on the base plate. The rear end of the guide rod is fixedly connected to the laser rangefinder sensor. A first reset assembly for resetting the guide rod is installed between the guide rod and the base plate. A flip plate for blocking the through slot is rotatably connected to the base plate. A second reset assembly for resetting the flip plate is installed between the flip plate and the base plate. In the initial state, the laser rangefinder sensor pushes the flip plate to the front of the base plate and opens the through slot.

[0010] Furthermore, a mounting plate is fixedly installed on the rear side of the laser rangefinder, and the guide rod is fixedly connected to the mounting plate.

[0011] Furthermore, the first reset assembly includes a spring, which is sleeved on the outside of the guide rod and has one end fixedly connected to the mounting plate, and the other end fixedly connected to the base plate.

[0012] Furthermore, a rubber block is fixedly mounted on the base plate and sleeved on the outside of the laser rangefinder sensor. In the initial state, the front end of the guide rod extends forward and beyond the rubber block.

[0013] Furthermore, the rubber block has a U-shaped structure, and in its initial state, the laser rangefinder extending to the front side of the base plate is smaller than the thickness of the rubber block.

[0014] Furthermore, the rubber block and the base plate are provided with through holes running from front to back, and the guide rod is slidably installed in the through holes.

[0015] Furthermore, the rubber block has an air chamber inside, and air holes are provided between the inner wall of the air chamber and the inner side wall and the front wall of the rubber block. The mounting plate is provided with an air supply assembly for supplying gas to the air chamber.

[0016] Furthermore, the air supply assembly includes a fan and an air distribution pipe. The fan is fixedly mounted on the mounting plate, one end of the air distribution pipe is connected to the air outlet of the fan, and the remaining ports of the air distribution pipe are connected to the air chamber.

[0017] Furthermore, the rubber block includes a first rubber part and a second rubber part. The first rubber part has an inwardly recessed first groove, and the second rubber part has an inwardly recessed second groove. The first groove and the second groove are adapted to each other to form an air chamber.

[0018] Furthermore, the rubber block also includes a sealing gasket, and the outer side of the second groove is provided with an outwardly extending insertion part. When the rubber block is installed, the sealing gasket is located between the first rubber part and the second rubber part, and the insertion part is inserted into the first groove. The outer wall of the insertion part abuts against the inner wall of the first groove.

[0019] Compared with the prior art, the beneficial effects of the present invention are: In the present invention, the external object first hits the guide rod and pushes the guide rod backward, thereby driving the laser range sensor to move backward, thus avoiding direct collision between the external object and the laser range sensor and causing damage to the laser range sensor;

[0020] As the guide rod moves backward, it drives the laser rangefinder to move backward. At the same time, the flip plate, under the action of the second reset component, keeps abutting against the side wall of the laser rangefinder. When the laser rangefinder moves back into the through slot, the flip plate closes the through slot to prevent debris from damaging the laser rangefinder during the impact process.

[0021] After the incident is resolved, the laser rangefinder sensor automatically resets under the action of the first reset component, and continues to operate. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the installation of existing sensors;

[0023] Figure 2 This is a schematic diagram of the structure of the present invention;

[0024] Figure 3 This is an exploded view of the present invention;

[0025] Figure 4 This is a schematic diagram of the through-slot closed state structure of the present invention;

[0026] Figure 5 This is a schematic diagram of a rubber block explosion.

[0027] Figure 6 This is a schematic diagram of the structure of the second rubber part of the present invention;

[0028] Figure 7 This is a cross-sectional view of the initial state of the present invention;

[0029] Figure 8 A cross-sectional view of the protective condition of the laser rangefinder sensor;

[0030] Figure 9 This is a schematic diagram of the rubber block installation structure;

[0031] Figure 10 This is a schematic diagram of the installation location of the present invention.

[0032] In the diagram: 1. Base plate; 11. Through groove; 12. Positioning block; 13. Guide hole; 2. Flip plate; 21. Torsion spring; 3. Rubber block; 31. First rubber part; 311. Air inlet pipe; 32. Second rubber part; 321. First air outlet; 322. Second air outlet; 323. Insertion part; 33. Sealing gasket; 331. Clearance hole; 34. Through hole; 35. Countersunk hole; 301. First slot chamber; 302. Second slot chamber; 4. Mounting plate; 41. Guide rod; 42. Spring; 5. Laser rangefinder sensor; 6. Fan; 7. Air distribution pipe; 8. Positioning bolt; 101. Cavity. Detailed Implementation

[0033] The technical solutions in the embodiments of the present invention will be clearly and completely described below. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0034] This embodiment provides a laser anti-collision device, which is mainly installed on the rear side of a forklift to prevent the laser rangefinder sensor from colliding with walls or other goods during the forklift's reversing process, thus preventing damage to the sensor.

[0035] like Figure 1 As shown, existing laser rangefinders on the rear of forklifts typically have two mounting positions, with the first mounting position as shown in the image. Figure 1 As shown in A, the laser rangefinder is installed at the rear of the forklift and protrudes outward. The head of the sensor is located at the very rear of the forklift. When the forklift is reversing, the laser rangefinder will first collide with the goods or wall. At this time, the laser rangefinder is easily squeezed and deformed, losing its rangefinding function and affecting its later use.

[0036] If the laser rangefinder is installed Figure 1 At position B, the laser rangefinder is located in cavity 101 at the rear of the forklift. This method protects the laser rangefinder from damage during a collision. However, this setup still has drawbacks. If the forklift collides with the goods first, it can easily cause damage to the forklift itself. At the same time, debris from the collision can easily hit the laser rangefinder, causing damage to the sensor.

[0037] In this embodiment, the laser rangefinder sensor is installed at the following location: Figure 10 As shown, the laser rangefinder is installed in cavity 101, and the anti-collision device extends out of the outside of cavity 101 to act as a buffer, reducing the damage to the laser rangefinder during a collision with the forklift.

[0038] In this embodiment, as Figure 2 and Figure 10 As shown, the anti-collision device includes a base plate 1, which is bolted to the rear side of the forklift, as... Figure 3 As shown, the base plate 1 has a through groove 11 extending from front to back, and a laser rangefinder 5 that slides back and forth is provided in the through groove 11. The base plate 1 also has a guide rod 41 extending from front to back, which is slidably connected to the base plate 1. The guide rod 41 located on the rear side of the base plate 1 is fixedly connected to the laser rangefinder 5, and the guide rod 41 located on the front side of the base plate 1 extends beyond the front end of the laser rangefinder 5. A first reset assembly for resetting the laser rangefinder 5 is installed between the guide rod 41 and the base plate 1.

[0039] With the above configuration, the front end of the guide rod 41 extends beyond the front end of the laser rangefinder 5. When the forklift collides with the goods or the wall, it first contacts the guide rod 41, which then pushes the guide rod 41 to move backward. At this time, the guide rod 41 drives the laser rangefinder 5 to move, preventing the wall or goods from contacting the laser rangefinder 5 and reducing damage to the laser rangefinder 5. After the collision ends, the first reset component can reset the laser rangefinder 5 and the guide rod 41.

[0040] To achieve the installation of the laser rangefinder sensor 5, in this embodiment, as follows: Figure 2 and Figure 3 As shown, a mounting plate 4 is provided on the rear side of the base plate 1. The laser rangefinder 5 is fixedly mounted on the mounting plate 4. The rear end of the guide rod 41 is fixedly connected to the mounting plate 4 by bolts. The first reset assembly includes a spring 42, as shown in the figure. Figure 4 As shown, the spring 42 is sleeved on the guide rod 41, with one end fixedly connected to the mounting plate 4 and the other end fixedly connected to the base plate 1.

[0041] With the above settings, when the guide rod 41 pushes backward, the spring 42 is stretched. After the accident ends and the push of the guide rod 41 is released, the spring 42 drives the guide rod 41 and the laser rangefinder 5 to reset.

[0042] In the initial state, such as Figure 2 and Figure 7 As shown, the laser rangefinder 5 extends through the slot 11 to the front side of the base plate 1. To protect the laser rangefinder 5 extending to the front side of the base plate 1, in this embodiment, as follows... Figure 3 and Figure 5As shown, the front side of the base plate 1 is provided with a U-shaped rubber block 3 sleeved on the outside of the laser rangefinder 5. The thickness of the rubber block 3 is greater than the thickness of the laser rangefinder 5 extending to the front side of the base plate 1. At the same time, the rubber block 3 extends out of the cavity 101 on the forklift. In this state, the peripheral wall of the laser rangefinder is blocked by the rubber block 3, which can prevent the laser rangefinder 5 from being hit from the side.

[0043] With the above settings, when a collision occurs, the rubber block 3 will be squeezed after the collision, and the rubber block 3 will absorb the energy of the collision to prevent the goods or walls from directly colliding with the forklift and reduce the damage to the forklift.

[0044] When rubber block 3 is compressed, it deforms and is prone to lateral displacement, affecting its impact cushioning effect. To enhance the load-bearing capacity of rubber block 3, therefore, in this embodiment, as... Figure 3 , Figure 4 and Figure 5 As shown, the rubber block 3 has a through hole 34 extending from front to back, and the base plate 1 has a guide hole 13 extending from front to back. When the rubber block 3 is installed, the through hole 34 and the guide hole 13 are aligned with each other, and the guide rod 41 passes through the guide hole 13 and the through hole 34 to form a sliding connection.

[0045] With the above configuration, since the guide rod 41 passes through the rubber block 3, when the rubber block 3 is subjected to positive compression, the position of the rubber block 3 is limited by the guide rod 41, thereby restricting the lateral displacement of the rubber block 3 and improving the performance of the rubber block 3.

[0046] In this embodiment, each side of the U-shaped rubber block 3 is provided with two guide rods 41, wherein the guide rods 41 are symmetrical to each other, further preventing the rubber block 3 from shifting during deformation.

[0047] To prevent debris from damaging the laser rangefinder 5 during a collision, therefore, in this embodiment, as... Figure 4 As shown, a flip plate 2 for closing the through groove 11 is rotatably mounted on the front side of the base plate 1. A positioning block 12 is fixedly provided on the front side of the base plate 1. The flip plate 2 is rotatably connected to the positioning block 12 via a rotating shaft. A second reset assembly for resetting the flip plate 2 is sleeved on the rotating shaft. The second reset assembly is a torsion spring 21, one end of which is fixed to the flip plate 2, and the other end is fixed to the positioning block 12. In this embodiment, two flip plates 2 are provided and are located on the left and right sides of the laser ranging sensor 5, respectively. In the initial state, as... Figure 7As shown, the laser rangefinder 5 extends through the through slot 11 to the front of the base plate 1 and pushes against the flip plate 2. At this time, the flip plate 2 opens the through slot 11, and the end wall of the flip plate 2 abuts against the side wall of the laser rangefinder 5, and the torsion spring 21 is in a torsional state.

[0048] With the above settings, during the collision, the guide rod 41 drives the laser rangefinder 5 to move backward. At this time, the laser rangefinder 5 retracts into the through slot 11. At this time, the flip plate 2 closes the through slot 11 under the action of the torsion spring 21. The flip plates 2 on both sides block the front of the rangefinder 5 to prevent the splashes from damaging the laser rangefinder 5.

[0049] During distance detection, the laser rangefinder 5 is prone to losing its range measurement value when an obstruction appears in front of it. To prevent objects such as dust, paper scraps, or plastic bags from floating in front of the laser rangefinder 5 and affecting the distance detection data, in this embodiment, such as Figure 7 and Figure 8 As shown, the rubber block 3 has an air chamber inside, and the inner wall of the air chamber is connected to the outside of the rubber block 3 by an air hole. The mounting plate 4 is also provided with an air supply component to provide gas to the air chamber.

[0050] With the above settings, when the laser rangefinder sensor 5 is in use, the air supply component supplies gas into the air chamber. At this time, the gas is ejected from the air hole and blows dust, paper, plastic bags and other objects on the front side of the laser rangefinder sensor 5 to float far away, reducing the obstruction of the laser rangefinder sensor 5 by external objects.

[0051] In this embodiment, as Figure 6 As shown, the air supply assembly includes a fan 6 and an air distribution pipe 7 connected to the air outlet of the fan 6. The fan 6 is fixedly installed on the mounting plate 4, and the remaining ports of the air distribution pipe 7 are connected to the air chamber.

[0052] In order to dissipate external floating objects, in this embodiment, such as Figure 6 and Figure 7 As shown, a first air outlet 321 is provided between the front wall of the rubber block 3 and the air chamber for blowing objects on the front side of the rubber block 3. A second air outlet 322 that bends forward is provided between the side wall of the air chamber and the inner side wall of the U-shaped rubber block 3. The second air outlet 322 is used to blow out the dust inside the U-shaped rubber block 3, reducing the amount of dust adhering to the window of the laser rangefinder sensor 5 and reducing dust interference.

[0053] In order to achieve the opening of the air chamber, in this embodiment, as follows: Figure 5 and Figure 6As shown, the rubber block 3 includes a first rubber part 31 and a second rubber part 32. The first rubber part 31 is provided with an inwardly recessed first groove 301. The first groove 301 is provided with an air inlet pipe 311 that communicates with the outside. The air inlet pipe 311 is connected to the air distribution pipe 7. The second rubber part 32 is provided with an inwardly recessed second groove 302. The first groove 301 and the second groove 302 are adapted to each other to form an air chamber.

[0054] To enhance the sealing performance of the air chamber, in this embodiment, as follows: Figure 6 As shown, the second chamber 302 has an outwardly extending insertion portion 323 on its outer side. The rubber block 3 also includes a sealing gasket 33. When the rubber block 3 is installed, the sealing gasket 33 is installed between the first rubber part 31 and the second rubber part 32, and the insertion portion 323 is inserted into the first chamber 301. The outer wall of the insertion portion 323 abuts against the inner wall of the first chamber 301, thereby enhancing the sealing performance of the first rubber part 31 and the second rubber part 32 and reducing the possibility of air leakage when the rubber block 3 is squeezed.

[0055] In order to allow the insertion portion 323 to pass through the sealing gasket 33, in this embodiment, as follows: Figure 5 As shown, the sealing gasket 33 is provided with a clearance hole 331 that runs through the front and back. When the rubber block is installed, the insertion part 323 passes through the clearance hole 33 and is inserted into the first groove chamber 301.

[0056] In order to install the rubber block 3 on the base plate 1, in this embodiment, the second rubber part 32 is provided with an inwardly recessed countersunk hole 35, and the first rubber part 31 is provided with bolt holes corresponding to the countersunk hole 35. In the installed state, as shown... Figure 9 As shown, the sealing gasket 33 is located between the first rubber part 31 and the second rubber part 32. The countersunk hole 35 is aligned with the bolt hole, and the positioning bolt 8 is installed in the countersunk hole 35. The rubber block 3 is fixed to the base plate 1 by the positioning bolt 8.

[0057] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within the present invention.

Claims

1. A laser anti-collision device, characterized in that: Includes a base plate (1), on which a through groove (11) runs from front to back is provided. A laser rangefinder (5) is slidably connected in the through groove (11). A guide rod (41) that can slide back and forth is provided on the base plate (1). The rear end of the guide rod (41) is fixedly connected to the laser rangefinder (5). A first reset assembly for resetting the guide rod (41) is installed between the guide rod (41) and the base plate (1). A flip plate (2) for blocking the through groove (11) is rotatably connected on the base plate (1). A second reset assembly for resetting the flip plate (2) is installed between the flip plate (2) and the base plate (1). In the initial state, the laser rangefinder (5) pushes the flip plate (2) to the front side of the base plate (1) and opens the through groove (11). A rubber block (3) is fixedly mounted on the base plate (1) and sleeved on the outside of the laser rangefinder (5). In the initial state, the front end of the guide rod (41) extends forward and beyond the rubber block (3). The rubber block (3) has a U-shaped structure. In the initial state, the laser range sensor (5) extending to the front side of the base plate (1) is smaller than the thickness of the rubber block (3). The rubber block (3) and the base plate (1) are provided with through holes (34) running from front to back, and the guide rod (41) is slidably installed in the through holes (34); The rubber block (3) has an air chamber inside. The inner wall of the air chamber is provided with air holes between the inner wall of the rubber block (3) and the inner side wall of the rubber block (3) and the front wall of the rubber block (3). The laser range sensor (5) is fixedly installed with a mounting plate (4) on the rear side. The mounting plate (4) is provided with an air supply component for supplying gas to the air chamber. The rubber block (3) includes a first rubber part (31) and a second rubber part (32). The first rubber part (31) has an inwardly recessed first groove (301), and the second rubber part (32) has an inwardly recessed second groove (302). The first groove (301) and the second groove (302) are adapted to each other to form an air chamber.

2. The laser anti-collision device according to claim 1, characterized in that: The guide rod (41) is fixedly connected to the mounting plate (4).

3. The laser anti-collision device according to claim 2, characterized in that: The first reset assembly includes a spring (42), which is sleeved on the outside of the guide rod (41) and has one end fixedly connected to the mounting plate (4) and the other end fixedly connected to the base plate (1).

4. The laser anti-collision device according to claim 1, characterized in that: The air supply assembly includes a fan (6) and a distribution pipe (7). One end of the distribution pipe (7) is connected to the air outlet of the fan (6), and the other ends of the distribution pipe (7) are connected to the air chamber.

5. A laser anti-collision device according to claim 4, characterized in that: The rubber block (3) also includes a sealing gasket (33). The outer side of the second groove (302) is provided with an outwardly extending insertion part (323). When the rubber block is installed, the sealing gasket (33) is located between the first rubber part (31) and the second rubber part (32), and the insertion part (323) is inserted into the first groove (301). The outer wall of the insertion part (323) abuts against the inner wall of the first groove (301).

Images