Laser bumper for crane

Abstract

The utility model provides a crane laser bumper which comprises a shell, a laser distance measuring sensor and a push plate are arranged at one end of the shell, a reset mechanism is arranged between the push plate and the shell, and a display screen and at least two keys are arranged on one side of the shell. A control module and a travel switch corresponding to the reset mechanism are arranged in the shell; the control module is provided with a single chip microcomputer and a first relay, a coil of the first relay is connected with the output end of the single chip microcomputer, and a normally closed part of the first relay is connected in series in a main loop of a driving motor for controlling the crane to move; the anti-collision device can reduce the probability of collision accidents of the crane and reduce potential safety hazards.

Description

TECHNICAL FIELD

[0001] The utility model belongs to crane technical field, concretely relates to a crane laser anticollision device. BACKGROUND

[0002] In order to guarantee the safe operation of crane, avoid the collision accident in the operation process, the currently generally used mode is to install anticollision device on crane. The initial mechanical buffer anticollision device can not fundamentally solve the collision problem, can only buffer the impact in the collision process, along with the operation speed of crane faster and faster, the traditional mechanical buffer anticollision device can not provide reliable safety protection, and based on this, the laser anticollision device appears.

[0003] In the prior art, the Chinese utility model patent document with the authorization announcement number CN220730435U discloses a crane anticollision pulse laser ranging device, which measures the collision distance between cranes by emitting laser, stops the movement of crane when the collision warning distance is reached, thereby preventing the collision of crane. This anticollision mode cannot stop the movement of crane in time when the laser ranging sensor and its circuit fail, and the crane still has the hidden danger of collision.

[0004] Therefore, it is necessary to design a crane laser anticollision device capable of reducing the probability of collision accident of crane and reducing safety hazards to solve the technical problems faced at present. SUMMARY

[0005] In view of the deficiencies in the prior art, the utility model provides a crane laser anticollision device capable of reducing the probability of collision accident of crane and reducing safety hazards.

[0006] The technical scheme of the utility model discloses a crane laser anticollision device, including the shell, the one end of shell is provided with laser ranging sensor and push plate, the push plate with the shell between is provided with reset mechanism, the one side of shell is provided with display screen and at least two keys, the inside of shell is provided with control module and stroke switch corresponding with reset mechanism. The control module has single-chip microcomputer and first relay, the coil of first relay is connected with the output end of single-chip microcomputer, the normally closed series of first relay is in the drive motor main circuit of control crane movement. The key and laser ranging sensor are connected with single-chip microcomputer. The actual distance value detected by laser ranging sensor reaches the parking distance, and the single-chip microcomputer controls the drive motor to stop. The drive motor main circuit of control crane movement is disconnected after the stroke switch is triggered.

[0007] The reset mechanism has guide rods fixedly connected with both ends of the push plate, the guide rods are in sliding connection with the shell, the guide rods outside the shell are fixedly provided with baffle plates inside the shell, reset springs are sleeved outside the guide rods between the baffle plates and one end of the shell inside, the baffle plates are fixedly provided with support plates, and the support plates are fixedly provided with trigger assemblies corresponding to the travel switches.

[0008] The trigger assembly has a sliding pipe fixedly arranged on one side of the support plate, a sliding block is slidably arranged in the sliding pipe, a buffer spring is arranged between the sliding block and the support plate, a trigger rod is fixedly arranged at an end of the sliding block away from the buffer spring, and the end of the trigger rod corresponds to the travel switch.

[0009] The crane laser collision preventer further comprises a second relay, a coil of the second relay is connected in series with the normally closed contact of the travel switch in a control loop, and the normally open contact of the second relay is connected in series in a main loop of a driving motor for controlling movement of the crane.

[0010] The single-chip microcomputer is connected with a warning light.

[0011] The single-chip microcomputer is connected with a buzzer.

[0012] The single-chip microcomputer is connected with a display screen, and the display screen is arranged outside the shell.

[0013] The control module has a power supply circuit for supplying power to the control module.

[0014] The shell is fixedly provided with a mounting plate.

[0015] The push plate is fixedly provided with a buffer pad on a side away from the reset mechanism.

[0016] The crane laser collision preventer has the advantages that:

[0017] (1) In the crane laser collision preventer, a single-chip microcomputer is preset with a parking distance, the single-chip microcomputer controls a driving motor to stop when an actual distance value detected by a laser ranging sensor reaches the parking distance, and collision of the crane is avoided.

[0018] (2) The preset parking distance in the single-chip microcomputer can be adjusted through a key, and the parking distance can be adjusted according to different running speeds during debugging.

[0019] (3) when the laser ranging sensor and its circuit appear failure, it cannot control the driving motor to stop in time, at this time, with the crane continues to move, the push plate is pushed, the reset mechanism is compressed and the travel switch is triggered, after the travel switch is triggered, the driving motor main circuit which controls the crane to move is disconnected, the driving motor is stopped in time, further avoid collision, can reduce the crane collision accident probability, reduce the security risk. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 It is external hook schematic view of crane laser anti-collision device in the utility model.

[0021] Figure 2 It is internal structure schematic view of crane laser anti-collision device in the utility model.

[0022] Figure 3 It is structure schematic view of trigger assembly in the utility model.

[0023] Figure 4 It is principle block diagram of control module in the utility model.

[0024] Figure 5 It is control principle block diagram of travel switch and driving motor in the utility model. DETAILED DESCRIPTION

[0025] Various exemplary embodiments of the present application will now be described in detail with reference to the accompanying drawings. The description of the exemplary embodiments is merely intended for description and is not as any limitation on the present application and its application or use. The present application can be realized in many different forms and is not limited to the embodiments described herein. These embodiments are provided to make the present application thorough and complete and to fully express the scope of the present application to those skilled in the art. It should be noted that: unless otherwise specifically stated, the relative arrangement of components and steps, the component of materials, the numerical expression and the values set forth in these embodiments should be interpreted as merely exemplary, not as a limitation.

[0026] The "first", "second" and similar words used in the present application do not represent any order, quantity or importance, but are only used to distinguish different parts. "Include" or "contain" and similar words mean that the elements before the word cover the elements listed after the word, and do not exclude the possibility of also covering other elements. "Up", "down", "left", "right" and the like are only used to represent relative positional relationship, when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0027] As Figures 1 to 5As shown, the crane laser anti-collision device comprises a shell 1, a laser ranging sensor 9 and a push plate 4 arranged at one end of the shell 1, a reset mechanism 5 arranged between the push plate 4 and the shell 1, a display screen 2 and at least two buttons 3 arranged at one side of the shell 1, and a control module 8 and a travel switch 7 corresponding to the reset mechanism 5 arranged inside the shell 1; the control module 8 has a single-chip microcomputer 81 and a first relay 83, the coil of the first relay 83 is connected with the output end of the single-chip microcomputer 81, and the normally closed first relay 83 is connected in series in the main circuit of a driving motor 87 for controlling the movement of the crane; the buttons 3 and the laser ranging sensor 9 are connected with the single-chip microcomputer 81; the single-chip microcomputer 81 is preset with a parking distance, and the single-chip microcomputer 81 controls the driving motor to stop when the actual distance value detected by the laser ranging sensor 9 reaches the parking distance; the main circuit of the driving motor 87 for controlling the movement of the crane is disconnected after the travel switch 7 is triggered; in this embodiment, the single-chip microcomputer 81 is preset with a parking distance, and the single-chip microcomputer 81 controls the driving motor to stop when the actual distance value detected by the laser ranging sensor 9 reaches the parking distance, thereby avoiding the collision of the crane; the preset parking distance in the single-chip microcomputer 81 can be adjusted through the buttons 3, thereby facilitating the adjustment of the parking distance according to different running speeds during debugging; when the laser ranging sensor and its circuit fail, the driving motor cannot be controlled to stop in time, at this time, the push plate 4 is pushed along with the continuous movement of the crane, the reset mechanism is compressed and triggers the travel switch 7, the main circuit of the driving motor 87 for controlling the movement of the crane is disconnected after the travel switch 7 is triggered, the driving motor 87 is stopped in time, and the collision is further avoided, thereby reducing the probability of the collision of the crane and reducing the safety hazard.

[0028] In some embodiments, as a specific embodiment of the reset mechanism 5, as shown in the figure, Figure 2 The reset mechanism 5 has a guide rod 51 fixedly connected with both ends of the push plate 4, the guide rod 51 is slidingly connected with the shell 1, a blocking disc 52 is fixedly arranged outside the guide rod 51 inside the shell 1, a reset spring 53 is sleeved outside the guide rod 51 between the blocking disc 52 and one end inside the shell 1 away from the push plate 4, a support plate 54 is fixedly arranged between the blocking discs 52, and a trigger assembly 6 corresponding to the travel switch 7 is fixedly arranged on the support plate 54; when the push plate 4 is pushed, the push plate 4 drives the guide rod 51 to move along the axial direction of the guide rod 51, the guide rod 51 drives the trigger assembly 6 to move when moving, and the trigger assembly 6 triggers the travel switch 7 when moving.

[0029] In order to reduce the impact of the trigger assembly 6 on the travel switch 7, as shown in the figure, Figure 3As shown, the trigger assembly 6 has a sliding tube 61 fixed on one side of the support plate 54, a sliding block 62 is slidingly arranged in the sliding tube 61, a buffer spring 64 is arranged between the sliding block 62 and the support plate 54, a trigger rod 63 is fixed on the end of the sliding block 62 away from the buffer spring 64, and the end of the trigger rod 63 corresponds to the travel switch 7. When the trigger rod 63 triggers the travel switch 7, the extension and contraction function of the buffer spring 64 can offset a part of the impact force, and at the same time a part of the energy is converted into the internal energy of the buffer spring 64, thereby playing a role of shock absorption and buffering.

[0030] In some embodiments, as shown in the drawings, Figure 5 As shown, the crane laser collision avoidance device further comprises a second relay 86, the coil of the second relay 86 is connected in series with the normally closed contact of the travel switch 7 in the control loop, and the normally open contact of the second relay 86 is connected in series in the main loop of the driving motor 87 for controlling the movement of the crane. When the travel switch 7 is triggered, the normally closed contact of the travel switch 7 is disconnected, at this time the coil of the second relay 86 is disconnected, the normally open contact of the second relay 86 changes from the closed state to the open state, disconnecting the main loop of the driving motor 87 for controlling the movement of the crane, so that the driving motor 87 stops rotating.

[0031] In some embodiments, the single-chip microcomputer 81 is connected with a warning light 84, when the actual distance value detected by the laser ranging sensor 9 reaches the parking distance, the single-chip microcomputer 81 controls the driving motor to stop, avoiding collision of the crane, and at the same time controls the warning light 84 to light up, reminding the on-site personnel to pay attention.

[0032] In some embodiments, the single-chip microcomputer 81 is connected with a buzzer 85, when the actual distance value detected by the laser ranging sensor 9 reaches the parking distance, the single-chip microcomputer 81 controls the driving motor to stop, avoiding collision of the crane, and at the same time the buzzer 85 emits a buzzing sound, reminding the on-site personnel to pay attention.

[0033] In some embodiments, the single-chip microcomputer 81 is connected with a display screen 2, the display screen 2 is arranged on the outside of the shell 1, and the display screen 2 is used to display the preset parking distance in the single-chip microcomputer 81. When the preset parking distance is adjusted through the button 3, the adjusted preset parking distance value can be seen through the display screen 2.

[0034] In some embodiments, the control module 8 has a power supply circuit for supplying power thereto.

[0035] In some embodiments, the shell 1 is fixedly provided with a mounting plate 11, and the mounting plate 11 can be fixedly installed on the crane frame by bolts.

[0036] In some embodiments, the push plate 4 is fixedly provided with a buffer pad 41 on the side away from the reset mechanism 5.

[0037] So far, the various embodiments of the present application have been described in detail. In order to avoid shielding the concept of the present application, some details known in the art are not described. Those skilled in the art can fully understand how to implement the technical solutions disclosed herein according to the above description.

[0038] The above-described embodiments only express some implementation manners of the present application, which are described in detail and in a specific and detailed manner, but should not be understood as a limitation on the scope of the present application. It should be pointed out that, for those skilled in the art, without departing from the concept of the present application, a number of modifications and improvements can be made, which all belong to the protection scope of the present application. Therefore, the protection scope of the present application patent should be subject to the appended claims.

Claims

1. A crane laser collision avoidance system, characterized by: The utility model provides a laser ranging sensor and push plate are provided to the one end of shell, reset mechanism is arranged between push plate and shell, display screen and at least two button are provided to the one side of shell, control module and stroke switch corresponding with reset mechanism are arranged in the inside of shell, The control module has a single-chip microcomputer and a first relay, the coil of the first relay is connected with the output end of the single-chip microcomputer, and the normally closed of the first relay is connected in series in the main circuit of the driving motor for controlling the movement of the crane. The button and the laser ranging sensor are connected with the single-chip microcomputer. The single-chip microcomputer is preset with a parking distance, and when the actual distance value detected by the laser ranging sensor reaches the parking distance, the single-chip microcomputer controls the driving motor to stop. The driving motor main circuit for controlling the movement of the crane is disconnected after the stroke switch is triggered.

2. Crane laser collision avoidance system according to claim 1, characterized in that: The reset mechanism has guide rods fixedly connected with both ends of the push plate, the guide rods are slidingly connected with the shell, the guide rods outside the shell are fixedly provided with flapper plates, the guide rods outside the flapper plates between the side away from the push plate and one end of the shell inside are sleeved with reset springs, and the flapper plates are fixedly provided with support plates.

3. Crane laser collision avoidance system according to claim 2, characterized in that: The trigger assembly has a sliding tube fixedly arranged on one side of the support plate, a sliding block is slidingly arranged in the sliding tube, a buffer spring is arranged between the sliding block and the support plate, a trigger rod is fixedly arranged at the end of the sliding block away from the buffer spring, and the end of the trigger rod corresponds to the stroke switch.

4. Crane laser collision avoidance system according to claim 1, characterized in that: The utility model also includes a second relay, the coil of the second relay is connected in series with the normally closed contact of the stroke switch in the control circuit, and the normally open contact of the second relay is connected in series in the main circuit of the driving motor for controlling the movement of the crane.

5. The crane laser collision avoidance system of claim 1, wherein: The single-chip microcomputer is connected with a warning light.

6. The crane laser collision avoidance system of claim 1, wherein: The single-chip microcomputer is connected with a buzzer.

7. The crane laser collision avoidance system of claim 1, wherein: The single-chip microcomputer is connected with a display screen, and the display screen is arranged on the outside of the shell.

8. The crane laser collision avoidance system of claim 1, wherein: The control module has a power supply circuit for supplying power.

9. The crane laser collision avoidance system of claim 1, wherein: The shell is fixedly provided with a mounting plate.

10. The crane laser collision avoidance system of claim 1, wherein: The push plate is fixedly provided with a buffer pad on the side away from the reset mechanism.

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