Crane rotation limiting control device

Abstract

The utility model discloses a crane rotation limit control device, which belongs to the technical field of crane parts, and is characterized by comprising a base, the top of the base is rotatably connected with a rotation frame, the surface of the rotation frame is bolted with a mounting frame, the surface of the mounting frame is fixedly connected with a protection assembly, and the protection assembly is fixedly connected with the top of the base. A track is in bolted connection with the surface of the base, a detection mechanism is arranged at the top of the track, a rotating block is in bolted connection with the surface of the rotating frame, and the problems that most of existing crane rotation limiting control devices are lack of a buffer control mechanism, when rotation limiting is triggered, sudden stop impact is large due to the too high speed, and the equipment structure is damaged are solved. The problems that in the prior art, the equipment reliability and service life are reduced, the adjustment process of a crane rotation limiting control device is mostly troublesome, the work of conveniently adjusting the rotation stroke is inconvenient to carry out, a detection element is easily interfered by environmental factors, the signal transmission accuracy is influenced, and limiting control fails are solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to crane parts technical field, especially in crane slewing limit control device. BACKGROUND

[0002] The crane slewing limit control device is an important safety device installed on the crane (crane), which is mainly used to limit the rotation range of the slewing part of the crane from the functional point of view. The slewing part of the crane includes the rotating platform, the lifting arm, etc. During the working process, the slewing limit control device can monitor the rotation angle of the slewing mechanism. When the slewing angle reaches the pre-set limit position, the device will trigger the corresponding control action to prevent the crane from continuing to slewing in the direction beyond the safety range.

[0003] Nowadays, large ocean-going ships are equipped with several fixed cranes for loading and unloading cargo and supplying food. The cranes are fixedly installed on the deck of the ship. During operation, due to the obstacles around the crane or the structure of the ship body, it is not possible to achieve 360° slewing. Therefore, when the crane is operating, it can only be observed by the naked eye of the personnel, which is prone to collision accidents.

[0004] The existing patent (publication number: CN217418001U) discloses a crane slewing obstacle-limiting control valve group, which includes a hoisting limit valve and a slewing limit valve. The hoisting limit valve includes a first valve body, and a normally open roller valve is installed at one end of the first valve body. The slewing limit valve includes two groups of second valve bodies, and a normally closed roller valve is installed at one end of the second valve body. In the crane slewing obstacle-limiting control valve group, the slewing limit valve can solve the collision accident during slewing. When the crane slews to the obstacle area, the slewing limit plate touches the slewing limit valve, the unloading system pressure is released, and the crane stops the one-way slewing action. When the slewing limit valve works and the crane stops the slewing action, the crane arm is operated to increase the angle of the crane arm. When the crane arm is higher than the obstacle, the hoisting limit plate touches the hoisting limit valve, the hoisting limit valve works, the system pressure rises, and the crane can operate normally.

[0005] In view of the above problems, the existing patent provides a solution. However, the existing crane slewing limit control device mostly lacks a buffer control mechanism. When the slewing limit is triggered, it is easy to cause a sudden stop due to excessive speed, which causes a large impact on the equipment structure, reduces the reliability and service life of the equipment, and makes the adjustment process of the crane slewing limit control device more troublesome. It is not convenient to adjust the slewing stroke, and the detection element is easily disturbed by environmental factors, which affects the accuracy of signal transmission and causes the limit control to fail.

[0006] Therefore, a crane slewing limit control device is proposed. Utility model content

[0007] The utility model discloses a purpose at, provide a kind of crane rotary position control device, can solve the rotary position control device of current crane mostly lack buffer control mechanism, when rotary position triggers, it is easy to cause sudden stop impact big due to speed too fast, cause damage to equipment structure, reduce equipment reliability and service life, and the adjustment process of crane rotary position control device mostly is more troublesome, inconvenient for the work of portable adjustment rotation stroke, and detection element is susceptible to environmental factors interference, influence signal transmission accuracy, lead to the problem of limit control failure.

[0008] To realize the above-mentioned purpose, the utility model provides the following technical scheme: a kind of crane rotary position control device, including base, the top of the base is rotatably connected with rotary frame, the surface of the rotary frame is bolted with mounting bracket, the surface of the mounting bracket is fixedly connected with protection assembly, the surface of the base is bolted with track, the top of the track is provided with detection mechanism, the surface of the rotary frame is bolted with rotating block, the bottom of the rotating block is provided with touch plate, the side of detection mechanism close to touch plate is provided with pressure sensor;

[0009] The detection mechanism includes control structure, damping rod and spring, the side of the damping rod close to control structure is bolted with control structure, the surface of the spring is sleeved on the damping rod, the side of the damping rod close to pressure sensor is bolted with pressure sensor.

[0010] Preferably, the bottom of the rotating block is bolted with fixed rod, the surface of the fixed rod is bolted with annular block, the side of the touch plate close to annular block is bolted with annular block.

[0011] Preferably, the pressure sensor is bolted with rubber pad away from damping rod, the left side of the control structure is bolted with state lamp.

[0012] Preferably, the inner wall of the track is slidably connected with sliding block, the inner wall of the sliding block is threadedly connected with knob, the bottom of the knob is in close contact with the inner wall of the track.

[0013] Preferably, the top of the sliding block is bolted with limiting frame, the bottom of the control structure is bolted with plug-in block, the surface of the plug-in block is clamped with the inner wall of the limiting frame.

[0014] Preferably, the inner wall of the limiting frame is provided with the insertion slot matched with the plug-in block, and the bottom of the control structure is in contact with the top of the limiting frame.

[0015] Preferably, the inner wall of the limiting frame is movably connected with bolt, and the surface of the bolt is threadedly connected with the inner wall of the plug-in block.

[0016] Preferably, the protection assembly comprises an acrylic plate and a frame, the inner wall of the acrylic plate is fixedly connected with the surface of the mounting frame, and the surface of the acrylic plate is fixedly connected with the inner wall of the frame.

[0017] Compared with the prior art, the utility model has the advantages that:

[0018] 1、The detection mechanism is provided with an intelligent programmable logic controller (PLC), a damping rod and a spring buffer, which can accurately process signals, protect sensors, quickly respond and accurately control the rotary brake system, avoid sudden stop impact, and improve the accuracy and safety of the rotary limit control of the rotary frame.

[0019] 2、The protection assembly, the pressure sensor and the track are provided, the protection assembly of the mounting frame and the inner wall provides preliminary protection for the track, the detection mechanism and the pressure sensor, blocks rainwater and other harsh environmental factors from erosion, ensures stable operation of the detection mechanism, and the rotary block and the touch plate cooperate with the detection mechanism to form a reliable triggering mechanism, the position is adjusted conveniently, the rotary overrunning is prevented, and the operation reliability and stability of the rotary frame are improved. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 It is a whole structure diagram of the crane rotary limit control device of the utility model;

[0021] Figure 2 It is a structure diagram of the protection assembly of the utility model;

[0022] Figure 3 It is a structure diagram of the base of the utility model;

[0023] Figure 4 It is a structure diagram of the rotary block of the utility model;

[0024] Figure 5 It is a structure diagram of the detection mechanism of the utility model;

[0025] Figure 6 It is a structure diagram of the sliding block of the utility model;

[0026] Figure 7 It is a structure diagram of the touch plate of the utility model.

[0027] In the drawing, 1, base; 2, detection mechanism; 201, control structure; 202, damping rod; 203, spring; 3, protection assembly; 301, frame; 302, acrylic plate; 4, rotary frame; 5, mounting frame; 6, track; 7, rotary block; 8, touch plate; 9, pressure sensor; 10, fixed rod; 11, annular block; 12, rubber pad; 13, status lamp; 14, sliding block; 15, knob; 16, limiting frame; 17, plug block; 18, plug groove; 19, bolt. DETAILED DESCRIPTION

[0028] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the utility model.

[0029] Please refer to Figures 1-7 The utility model provides technical scheme:

[0030] A crane rotary limiting control device, including base 1, the top of base 1 is rotatably connected with rotary frame 4, the surface of rotary frame 4 is bolted with mounting bracket 5, the surface of mounting bracket 5 is fixedly connected with protection assembly 3, the surface of base 1 is bolted with track 6, the top of track 6 is provided with detection mechanism 2, the surface of rotary frame 4 is bolted with swivel block 7, the bottom of swivel block 7 is provided with touch plate 8, and one side of detection mechanism 2 close to touch plate 8 is provided with pressure sensor 9;

[0031] Detection mechanism 2 includes control structure 201, damping rod 202 and spring 203, one side of damping rod 202 close to control structure 201 is bolted with control structure 201, spring 203 is sleeved on the surface of damping rod 202, and one side of damping rod 202 close to pressure sensor 9 is bolted with pressure sensor 9.

[0032] In the embodiment: by setting detection mechanism 2, control structure 201 in detection mechanism 2 adopts advanced intelligent programmable logic controller (PLC), which can accurately receive pressure sensor 9 signal and rapidly process according to preset logic, damping rod 202 and spring 203 cooperate, effectively buffer the impact force of touch plate 8 and pressure sensor 9 contact moment, protect pressure sensor 9 from damage and ensure signal stable transmission, when touch plate 8 triggers pressure sensor 9, control structure 201 can quickly respond, accurately control rotary frame 4 rotary braking system according to internal program, effectively avoid the impact of sudden stop caused by too fast rotary speed, realize smooth braking, improve the accuracy and safety of rotary frame 4 rotary limiting control, by setting protection assembly 3, pressure sensor 9 and track 6, the protection assembly 3 of mounting bracket 5 and inner wall provides preliminary protection for track 6, detection mechanism 2 and pressure sensor 9, blocks rainwater and other adverse environmental factors, ensures the stable operation of detection mechanism 2, the setting of swivel block 7 and touch plate 8 cooperates with detection mechanism 2 on track 6, forms reliable rotary limiting trigger mechanism, and the position adjustment process of detection mechanism 2 is relatively convenient, effectively prevents the collision accident caused by rotary frame 4 over-rotation, improves the reliability and stability of rotary frame 4 operation.

[0033] Specifically, asFigure 7 As shown in the figure, the bottom of the rotating block 7 is bolted with a fixing rod 10, the surface of the fixing rod 10 is bolted with an annular block 11, and the side close to the annular block 11 of the touch plate 8 is bolted with the annular block 11.

[0034] Specifically, as shown in the figure, Figure 5 The pressure sensor 9 is bolted with a rubber pad 12 away from the damping rod 202, and the left side of the control structure 201 is bolted with a state lamp 13.

[0035] Specifically, as shown in the figure, Figure 5 , Figure 6 The inner wall of the track 6 is slidingly connected with a sliding block 14, the inner wall of the sliding block 14 is threadedly connected with a knob 15, and the bottom of the knob 15 is in close contact with the inner wall of the track 6.

[0036] In this embodiment: the positions of the fixing rod 10 and the annular block 11 are fixed, the positions of the annular block 11 and the touch plate 8 are fixed, which facilitates the subsequent touch control work of the touch plate 8, ensures accurate contact with the pressure sensor 9, effectively buffers the impact force of the pressure sensor 9, protects the pressure sensor 9 and reduces the possibility of accidental touch, improves detection accuracy and stability, the sliding block 14 and the knob 15 are arranged in the track 6, which realizes convenient sliding position adjustment of the detection mechanism 2 on the track 6, when the sliding block 14 slides to the appropriate position, the position of the sliding block 14 is limited by rotating the knob 15, which enhances the flexibility and universality of the device.

[0037] Specifically, as shown in the figure, Figure 5 , Figure 6 The top of the sliding block 14 is bolted with a limiting frame 16, the bottom of the control structure 201 is bolted with an insertion block 17, and the surface of the insertion block 17 is clamped with the inner wall of the limiting frame 16.

[0038] Specifically, as shown in the figure, Figure 5 , Figure 6 The inner wall of the limiting frame 16 is provided with an insertion slot 18 matched with the insertion block 17, and the bottom of the control structure 201 is in contact with the top of the limiting frame 16.

[0039] In this embodiment: the positions of the insertion block 17 and the control structure 201 are fixed, the positions of the limiting frame 16 and the sliding block 14 are fixed, which facilitates the subsequent work of the control structure 201 driving the insertion block 17 to insert into the inner wall of the limiting frame 16, and facilitates the fixing of the control structure 201, ensures firm installation and accurate positioning of the control structure 201, and prevents it from shaking or shifting during rotary operation.

[0040] Specifically, as shown in the figure, Figure 5 The inner wall of the limiting frame 16 is movably connected with a bolt 19, and the surface of the bolt 19 is threadedly connected with the inner wall of the insertion block 17.

[0041] Specifically, as shown in Figure 2 The inner wall of the acrylic plate 302 is fixedly connected with the surface of the mounting frame 5, and the surface of the acrylic plate 302 is fixedly connected with the inner wall of the frame 301.

[0042] In the embodiment, the bolt 19 further reinforces the connection between the plug-in block 17 and the limiting frame 16, improves the overall structural strength and stability, ensures the normal cooperation of the components of the device under complex working conditions, the high transparency of the acrylic plate 302 in the protection assembly 3 facilitates the observation of the running state of the internal detection mechanism 2, and the detection mechanism 2 can be preliminarily protected, thereby ensuring the safety and continuity of the rotary operation.

[0043] Working principle: during the use of the base 1, the detection mechanism 2 is arranged, the control structure 201 in the detection mechanism 2 adopts an advanced intelligent programmable logic controller (PLC), which can accurately receive the signal of the pressure sensor 9 and rapidly process according to the preset logic, the damping rod 202 and the spring 203 cooperate to effectively buffer the impact force in the moment when the touch plate 8 contacts the pressure sensor 9, thereby protecting the pressure sensor 9 from damage and ensuring stable signal transmission, when the touch plate 8 triggers the pressure sensor 9, the control structure 201 can quickly respond and accurately control the rotary brake system of the rotary frame 4 according to the internal program, thereby effectively avoiding the impact caused by the too fast rotary speed of the rotary frame 4, achieving smooth braking, improving the accuracy and safety of the rotary limit control of the rotary frame 4, and providing preliminary protection for the track 6, the detection mechanism 2 and the pressure sensor 9 through the arrangement of the protection assembly 3, the pressure sensor 9 and the track 6, the mounting frame 5 and the protection assembly 3 on the inner wall, blocking the erosion of rain and other harsh environmental factors, ensuring the stable operation of the detection mechanism 2, the setting of the rotating block 7 and the touch plate 8 cooperates with the detection mechanism 2 on the track 6 to form a reliable rotary limit triggering mechanism, and the position adjustment process of the detection mechanism 2 is relatively convenient, effectively preventing the collision accidents caused by the over-rotation of the rotary frame 4, and improving the reliability and stability of the operation of the rotary frame 4.

[0044] The above is only a preferred embodiment of the present application, and is not intended to limit the present application, and any modification, equivalent replacement and improvement made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A crane rotation limit control device, comprising a base (1), characterized in that: The top of the base (1) is rotatably connected to a rotating frame (4), the surface of the rotating frame (4) is bolted to a mounting frame (5), the surface of the mounting frame (5) is fixedly connected to a protective component (3), the surface of the base (1) is bolted to a track (6), the top of the track (6) is provided with a detection mechanism (2), the surface of the rotating frame (4) is bolted to a rotating block (7), the bottom of the rotating block (7) is provided with a touch plate (8), and a pressure sensor (9) is provided on the side of the detection mechanism (2) close to the touch plate (8); The detection mechanism (2) comprises a control structure (201), a damping rod (202) and a spring (203); the damping rod (202) is bolted to the control structure (201) on a side close to the control structure (201); the spring (203) is sleeved on the surface of the damping rod (202); and the damping rod (202) is bolted to the pressure sensor (9) on a side close to the pressure sensor (9).

2. A crane rotation limit control device according to claim 1, characterized in that: The bottom of the rotating block (7) is bolted with a fixing rod (10), the surface of the fixing rod (10) is bolted with an annular block (11), and the side of the touch plate (8) close to the annular block (11) is bolted to the annular block (11).

3. The crane rotation limit control device according to claim 1, characterized in that: The pressure sensor (9) is bolted to a rubber pad (12) away from the damping rod (202), and the left side of the control structure (201) is bolted to a status light (13).

4. The crane rotation limit control device according to claim 1, characterized in that: The inner wall of the track (6) is slidably connected to a slider (14), the inner wall of the slider (14) is threadedly connected to a knob (15), and the bottom of the knob (15) is in close contact with the inner wall of the track (6).

5. The crane rotation limit control device according to claim 4, characterized in that: The top of the slider (14) is bolted to a limiting frame (16), and the bottom of the control structure (201) is bolted to an insert block (17), and the surface of the insert block (17) is engaged with the inner wall of the limiting frame (16).

6. The crane rotation limit control device according to claim 5, characterized in that: The inner wall of the limiting frame (16) is provided with a slot (18) for use with the insert block (17), and the bottom of the control structure (201) is in contact with the top of the limiting frame (16).

7. The crane rotation limit control device according to claim 5, characterized in that: The inner wall of the limiting frame (16) is movably connected with a bolt (19), and the surface of the bolt (19) is threadedly connected to the inner wall of the insert block (17).

8. The crane rotation limit control device according to claim 1, characterized in that: The protective assembly (3) comprises an acrylic plate (302) and a frame (301), wherein the inner wall of the acrylic plate (302) is fixedly connected to the surface of the mounting frame (5), and the surface of the acrylic plate (302) is fixedly connected to the inner wall of the frame (301).

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