A limiting structure for the movement range of the operating rod of a hoisting vehicle

Abstract

The present invention provides a limiting structure for the movement range of the operating rod of a hoisting operation vehicle. There are four of them and they cooperate with the four obstacle detection devices of the hoisting vehicle head. It includes a box body and a signal receiving and control device, a lifting mechanism and a limiting mechanism inside the box body; the box body is fixed on the bottom plate of the crane operation cabin and the opening faces the top plate of the crane operation cabin; the signal receiving and control device receives the warning signals of the connected obstacle detection devices, issues an upward driving instruction, receives the safety signals of the connected obstacle detection devices, and issues a downward driving instruction; the lifting mechanism receives the upward driving instruction, drives the limiting mechanism to extend out of the box body to form a certain angle with the operating rod of the hoisting operation vehicle to limit the movement of the operating rod of the hoisting operation vehicle and stop the hoisting vehicle head, and receives the downward driving instruction, drives the limiting mechanism to retract into the box body, releases the angle and enables the hoisting vehicle head to continue moving. Implementing the present invention can avoid the safety hazards of the staff continuing to operate when an obstacle enters the alarm area of the obstacle detection device.

Description

Technical Field

[0001] The present invention relates to the technical field of crane operations, and particularly to a limiting structure for the movement range of the operating lever of a hoisting operation vehicle. Background Art

[0002] With the development of society, the workload of various renovation projects and new construction projects has increased significantly, resulting in an increase in crane operations at the construction site.

[0003] During crane operations, the hoisting vehicle head moves arbitrarily in the air as required by the operation. To prevent the hoisting vehicle head from accidentally hitting an obstacle, an obstacle detection device with an alarm function is generally installed to enable timely alarm when an obstacle enters the alarm area of the obstacle detection device, reminding the operator to stop the operation. However, in reality, operators often continue to operate within the alarm area due to slow reaction or other factors, resulting in frequent accidents where the hoisting vehicle head accidentally hits an obstacle.

[0004] Therefore, it is necessary to consider limiting the movement range of the operating lever of the hoisting operation vehicle to avoid the safety hazard of the operator continuing to operate when an obstacle enters the alarm area of the obstacle detection device. Summary of the Invention

[0005] The technical problem to be solved by the embodiments of the present invention is to provide a limiting structure for the movement range of the operating lever of a hoisting operation vehicle, which can avoid the safety hazard of the operator continuing to operate when an obstacle enters the alarm area of the obstacle detection device.

[0006] To solve the above technical problem, the embodiments of the present invention provide a limiting structure for the movement range of the operating lever of a hoisting operation vehicle, and there are four of them; the four limiting structures are all fixed on the bottom plate of the crane operation cabin, and are respectively deployed in four directions on the outer periphery of the base of the operating lever of the hoisting operation vehicle, and are respectively matched with four obstacle detection devices preset in four directions of the hoisting vehicle head; among them,

[0007] Each of the limiting structures includes a box body and a signal receiving and control device, a lifting mechanism, and a limiting mechanism provided in the box body;

[0008] The box body is fixed on the bottom plate of the crane operation cabin, and its opening faces the top plate of the crane operation cabin;

[0009] One end of the signal receiving and controlling device is connected to a corresponding obstacle detection device, and the other end is connected to one end of the lifting mechanism. It is used to issue an upward driving instruction to the lifting mechanism if it receives an alarm signal generated when the connected obstacle detection device detects an obstacle entering the alarm area; and, if it receives a safety signal generated when the connected obstacle detection device detects an obstacle exiting the alarm area, it issues a downward driving instruction to the lifting mechanism.

[0010] The other end of the lifting mechanism is connected to the limiting mechanism. When it receives the upward driving instruction, it is used to drive the limiting mechanism to move towards the top plate of the crane operator's cab and extend outside the box body to form a certain angle with the operating rod of the lifting work vehicle, so as to limit the lifting work vehicle operating rod to move within the angle, causing the lifting vehicle head to stop in the air; and when it receives the downward driving instruction, it drives the limiting mechanism to move towards the bottom plate of the crane operator's cab and retract into the box body to release the angle formed between the limiting mechanism and the operating rod of the lifting work vehicle, enabling the lifting vehicle head to continue to move in the air following the movement of the operating rod of the lifting work vehicle.

[0011] Wherein, the lifting mechanism includes two motors and two telescopic rods respectively driven by the two motors to perform reciprocating telescopic movements.

[0012] Wherein, the limiting mechanism is a cross bar, and both ends of the cross bar are respectively fixed on the two telescopic rods and are arranged towards the top plate of the crane operator's cab.

[0013] Wherein, the signal receiving and controlling device includes a central processing unit and a connected signal receiving module and a drive control module;

[0014] Wherein, the signal receiving module is connected to an obstacle detection device by wire. It is used to receive an alarm signal generated when the connected obstacle detection device detects an obstacle entering the alarm area and issue an upward driving instruction to the lifting mechanism; and receive a safety signal generated when the connected obstacle detection device detects an obstacle exiting the alarm area and issue a downward driving instruction to the lifting mechanism.

[0015] The central processing unit is used to generate the upward driving instruction according to the alarm signal; and generate the downward driving instruction according to the safety signal.

[0016] The driving control module is connected to both of the two motors, and is configured to generate a first driving signal according to the ascending driving instruction to drive the two motors to rotate forward synchronously so that the two telescopic rods ascend at the same speed; and generate a second driving signal according to the descending driving instruction to drive the two motors to rotate reversely synchronously so that the two telescopic rods descend at the same speed simultaneously.

[0017] Wherein, the height of the box body is less than the height of the base of the operating rod of the hoisting work vehicle.

[0018] Wherein, the four directions of the outer periphery of the base of the operating rod of the hoisting work vehicle are the due front, the due rear, the due left and the due right respectively, and correspond one by one to the four obstacle detection devices preset in the four directions of the hoisting vehicle head.

[0019] Wherein, the included angle is 30 degrees.

[0020] Implementing the embodiments of the present invention has the following beneficial effects:

[0021] The four limiting structures of the present invention are deployed in the four directions of the outer periphery of the base of the operating rod of the hoisting work vehicle, and when the obstacle detection device detects that an obstacle enters the alarm area, the lifting mechanism in the corresponding direction limiting structure drives the limiting mechanism to extend out of the box body to form a certain included angle with the operating rod of the hoisting work vehicle, so as to limit the movement of the operating rod of the hoisting work vehicle and stop the hoisting vehicle head in the air, thereby being able to avoid the safety hazard of the staff continuing to work when an obstacle enters the alarm area of the obstacle detection device. Description of the Drawings

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, obtaining other drawings based on these drawings still belongs to the scope of the present invention.

[0023] Figure 1 It is an installation schematic diagram of a limiting structure for the movement range of an operating rod of a hoisting work vehicle provided by an embodiment of the present invention;

[0024] Figure 2 For Figure 1 The plane structure diagram of a single limiting structure in

[0025] Figure 3 For Figure 2 The logic block diagram of the signal receiving and control device in Detailed Embodiments

[0026] To make the objectives, technical solutions, and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings.

[0027] As Figure 1 and Figure 2 shown, in an embodiment of the present invention, a limiting structure for the movement range of the operating rod of a hoisting operation vehicle is proposed, and there are four of them; the four limiting structures T are all fixed on the bottom plate of the crane operation cabin (not shown), and are respectively deployed in four directions (such as directly in front, directly behind, directly to the left, and directly to the right) on the outer periphery of the base (not shown) of the operating rod of the hoisting operation vehicle, and are respectively matched with four obstacle detection devices M preset in four directions on the hoisting vehicle head (not shown); it should be noted that the four directions set by the four limiting structures T should correspond one-to-one with the four directions where the four obstacle detection devices M are preset on the hoisting vehicle head, so as to avoid the safety hazard that the operating rod of the hoisting operation vehicle cannot be limited in movement due to non-corresponding direction positions when an obstacle enters the alarm area of the obstacle detection device M and the hoisting vehicle head continues to move in the air.

[0028] Among them, each limiting structure T includes a box body 1 and a signal receiving and control device 2, a lifting mechanism 3, and a limiting mechanism 4 provided in the box body 1;

[0029] The box body 1 is fixed on the bottom plate of the crane operation cabin, and its opening faces the top plate (not shown) of the crane operation cabin; it should be noted that the bottom plate and the top plate of the crane operation cabin are set with reference to the ground, the direction facing the ground is set as the bottom, and the direction facing the sky is set as the top;

[0030] One end of the signal receiving and control device 2 is connected to a corresponding obstacle detection device M by a wired method (such as optical fiber, copper wire, etc.), and the other end is connected to one end of the lifting mechanism 3, and is used for issuing an upward driving instruction to the lifting mechanism 3 if it receives the warning signal generated when the connected obstacle detection device M detects that an obstacle enters the alarm area; and, if it receives the safety signal generated when the connected obstacle detection device M detects that an obstacle exits the alarm area, it issues a downward driving instruction to the lifting mechanism 3; it should be noted that the alarm area set by the obstacle detection device M is set according to the actual environment and will not be elaborated here;

[0031] The other end of the lifting mechanism 3 is connected to the limit mechanism 4. When receiving an upward driving instruction, it is used to drive the limit mechanism 4 to move towards the top plate of the crane operation cabin and extend outside the box body 1 to form a certain angle (such as 30 degrees, 15 degrees, etc.) with the operating rod of the hoisting operation vehicle, so as to limit the hoisting operation vehicle operating rod to move within this angle and make the hoisting vehicle head stop in the air. And when receiving a downward driving instruction, it drives the limit mechanism 4 to move towards the bottom plate of the crane operation cabin and retract into the box body 1 to release the angle formed between the limit mechanism 4 and the operating rod of the hoisting operation vehicle, so that the hoisting vehicle head can continue to move in the air along with the movement of the operating rod of the hoisting operation vehicle. In one example, the lifting mechanism 3 includes two motors 31 and two telescopic rods 32 that are respectively driven by the two motors 31 to perform reciprocating telescopic movements.

[0032] It can be understood that the four limiting structures T are deployed in the four directions of the outer periphery of the base of the hoisting operation vehicle operating rod. When the obstacle detection device M in a certain direction detects an obstacle entering the alarm area, the lifting mechanism 3 in the limiting structure T in the same direction drives the limit mechanism 4 to extend outside the box body 1 to form a certain angle with the operating rod of the hoisting operation vehicle, so as to limit the movement of the operating rod of the hoisting operation vehicle and make the hoisting vehicle head stop in the air, thereby being able to avoid the safety hazard of the staff continuing to operate when the obstacle enters the alarm area of the obstacle detection device M. Similarly, when the obstacle detection device M in the above direction detects that the obstacle exits the alarm area, the lifting mechanism 3 in the limiting structure T in the same direction drives the limit mechanism 4 to retract into the box body 1, so that the operating rod of the hoisting operation vehicle can move freely in the same direction, and the hoisting vehicle head continues to move in the air along with the movement of the operating rod of the hoisting operation vehicle.

[0033] In one example, the box body 1 is made of stainless steel, and its height is less than the height of the base of the hoisting operation vehicle operating rod to avoid the box body 1 interfering with the movement range of the hoisting operation vehicle operating rod. The lifting mechanism 3 includes two motors and two telescopic rods. At this time, both telescopic rods are made of stainless steel. The limit mechanism 4 is a cross bar made of stainless steel, and both ends of the cross bar are respectively fixed on the two telescopic rods and are arranged towards the top plate of the crane operation cabin. The signal receiving and control device 2 includes a central processor 21 and the connected signal receiving module 22 and drive control module 23 (such as Figure 3As shown in the figure; the signal receiving module 22 is connected to an obstacle detection device M in a corresponding direction through a conductive copper wire, and is used to receive the warning signal generated when the connected obstacle detection device M detects an obstacle entering the warning area, and then issues an upward driving instruction to the lifting mechanism 3; and, receives the safety signal generated when the connected obstacle detection device M detects an obstacle exiting the warning area, and then issues a downward driving instruction to the lifting mechanism 3; the central processing unit 21 is used to generate an upward driving instruction according to the warning signal; and generate a downward driving instruction according to the safety signal; the driving control module 23 is connected to both motors, and is used to generate a first driving signal according to the upward driving instruction to drive the two motors to rotate forward synchronously so that the two telescopic rods rise at the same speed; and generate a second driving signal according to the downward driving instruction to drive the two motors to rotate reversely synchronously to simultaneously make the two telescopic rods descend at the same speed.

[0034] It can be understood that the signal receiving and control device 2 can also be designed into different circuit diagrams, which will not be elaborated here.

[0035] Implementing the embodiments of the present invention has the following beneficial effects:

[0036] The four limiting structures of the present invention are deployed in four directions on the outer periphery of the base of the operating rod of the hoisting operation vehicle. When the obstacle detection device detects an obstacle entering the warning area, the lifting mechanism in the corresponding direction limiting structure drives the limiting mechanism to extend out of the box body to form a certain angle with the operating rod of the hoisting operation vehicle, so as to limit the movement of the operating rod of the hoisting operation vehicle and stop the hoisting vehicle head in the air, thereby avoiding the safety hazard of the staff continuing to work when the obstacle enters the warning area of the obstacle detection device.

[0037] The above-disclosed are only the preferred embodiments of the present invention. Of course, the scope of the rights of the present invention cannot be limited by this. Therefore, equivalent changes made according to the claims of the present invention still fall within the scope covered by the present invention.

Claims

1. A limiting structure for the movement range of the operating rod of a hoisting work vehicle, characterized in that, There are four of them; all four of the said limiting structures are fixed to the bottom plate of the crane operation cabin and are respectively deployed in four directions around the outer periphery of the base of the operation lever of the hoisting operation vehicle, and are respectively coordinated with four obstacle detection devices preset in four directions of the hoisting vehicle head; among them, each of the said limiting structures includes a box body and a signal receiving and control device, a lifting mechanism and a limiting mechanism provided in the box body; the box body is fixed to the bottom plate of the crane operation cabin, and its opening faces the top plate of the crane operation cabin; one end of the signal receiving and control device is connected to a corresponding obstacle detection device, and the other end is connected to one end of the lifting mechanism. When it receives an alarm signal generated when the connected obstacle detection device detects an obstacle entering the alarm area, it issues an upward driving instruction to the lifting mechanism; and when it receives a safety signal generated when the connected obstacle detection device detects an obstacle exiting the alarm area, it issues a downward driving instruction to the lifting mechanism; the other end of the lifting mechanism is connected to the limiting mechanism. When it receives the upward driving instruction, it drives the limiting mechanism to move towards the top plate of the crane operation cabin and extend out of the box body to form a certain angle with the operation lever of the hoisting operation vehicle, so as to limit the operation lever of the hoisting operation vehicle to move within the angle, causing the hoisting vehicle head to stop in the air; and when it receives the downward driving instruction, it drives the limiting mechanism to move towards the bottom plate of the crane operation cabin and retract into the box body to release the angle formed between the limiting mechanism and the operation lever of the hoisting operation vehicle, enabling the hoisting vehicle head to continue to move in the air following the movement of the operation lever of the hoisting operation vehicle.

2. The limiting structure for the movement range of the operating lever of the hoisting vehicle as described in claim 1, characterized in that, The lifting mechanism includes two motors and two telescopic rods respectively driven by the two motors to perform reciprocating telescopic movement.

3. The limiting structure for the movement range of the operating lever of the hoisting work vehicle according to claim 2, characterized in that, The limiting mechanism is a cross bar, and both ends of the cross bar are respectively fixed to the two telescopic rods and are arranged towards the top plate of the crane operation cabin.

4. The limiting structure for the movement range of the operating lever of the hoisting vehicle according to claim 3, characterized in that, The signal receiving and control device includes a central processor and a signal receiving module and a drive control module connected thereto; among them, the signal receiving module is connected to an obstacle detection device by wire, and is used to receive an alarm signal generated when the connected obstacle detection device detects an obstacle entering the alarm area, and issue an upward driving instruction to the lifting mechanism; and receive a safety signal generated when the connected obstacle detection device detects an obstacle exiting the alarm area, and issue a downward driving instruction to the lifting mechanism; the central processor is used to generate the upward driving instruction according to the alarm signal; and generate the downward driving instruction according to the safety signal; the drive control module is connected to both of the two motors, and is used to generate a first drive signal according to the upward driving instruction to drive the two motors to rotate forward synchronously to make the two telescopic rods rise at the same speed; and generate a second drive signal according to the downward driving instruction to drive the two motors to rotate reversely synchronously to simultaneously make the two telescopic rods descend at the same speed.

5. The limiting structure for the movement range of the operating lever of the hoisting work vehicle according to claim 4, characterized in that, The height of the box body is less than the height of the base of the operating rod of the hoisting work vehicle.

6. The limiting structure for the movement range of the operating lever of the hoisting vehicle as described in claim 5, characterized in that, The four directions of the outer periphery of the base of the operating rod of the hoisting work vehicle are the due front, the due rear, the due left, and the due right respectively, and correspond one by one to the four obstacle detection devices preset in the four directions of the hoisting vehicle head.

7. The limiting structure for the movement range of the operating lever of the hoisting vehicle as described in claim 6, characterized in that, The included angle is 30 degrees.

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