Crane control device

Abstract

The invention relates to the technical field of crane remote control, in particular to a crane control device which comprises a cabinet body, a supporting carrier and guardrails, and the cabinet body is installed on the supporting carrier; the guardrails are installed on the supporting carriers. The support carrier is a frame of a crane or a crane carriage; a control mechanism is installed in the cabinet body and used for receiving a control instruction remotely sent by a control room. The control mechanism is integrated with an electric hoist control unit of the crane, a crane vehicle control unit and a cart control unit; the detection mechanism is mounted in the cabinet body; the protection mechanism is mounted in the cabinet body and is used after the cabinet body is loosened; according to the invention, the control mechanism is used for controlling the units such as the crane carriage and the cart in the crane to move and carrying the container to move, so that the remote control of the port container crane is realized; and the worker does not need to frequently climb up a crane to maintain the cabinet body, so that the convenience of the worker during inspection is greatly improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of remote control of cranes, in particular to a crane control device. BACKGROUND

[0002] Crane includes various types such as tower crane and container gantry crane, which is widely used in material handling and port container loading and unloading fields, and its structure usually includes core components such as trolley and car running mechanism, and is equipped with integrated electrical control device; the operator in the control room issues operation instructions, the device receives the instructions and implements remote control, and then accurately drives the trolley and car running mechanism to complete the specified action, realizes the lifting, translation and positioning of the container.

[0003] The Chinese patent document with the authorization announcement number CN222273932U discloses a portal crane control box, which comprises a cabinet body, the cabinet body is provided with uniformly distributed heat dissipation grooves on one side, and the heat dissipation groove area is covered with a filter plate, the cabinet body is integrated with an electric hoist control unit and a traveling car control unit, the filter plate is provided with a rotatable dust suction element, and the cabinet body is provided with a dust suction fan; it also comprises a remote controller, the cabinet body is provided with a signal receiver for receiving control signals sent by the remote controller and a controller for processing signals and making corresponding control commands; in the above-mentioned prior art, the electric hoist control unit and the traveling car control unit are integrated in the cabinet body, sharing one control box, simplifying the circuit layout, and adopting remote control for operation, which is fast and convenient, greatly improving the use efficiency of the crane, in addition, when the filter plate needs to be cleaned, the dust adhered to the filter plate is sucked away by the suction force generated by the dust suction fan, so that the filter plate is unobstructed, ensuring the heat dissipation effect of the control box.

[0004] However, in the crane of the port, the control device is generally installed on the frame or the trolley, and the crane and the trolley are always moving, and because the crane is large, the damping effect is poor, so that the installed control device is subjected to a lot of vibration, which causes the connection between the control device and the crane to loosen, which may cause the control device to fall off, etc., so that the staff needs to check regularly, but in the port, there are many cranes, and because of the demand for remote control, there may be many control devices on one crane, which is very troublesome to check, affecting the maintenance efficiency. SUMMARY

[0005] The present application aims at the problems in the background art and provides a crane control device.

[0006] The technical scheme of the present application is: a crane control device, comprising a cabinet, a support carrier and a guardrail, the cabinet is installed on the support carrier; the guardrail is installed on the support carrier; the support carrier is a crane frame or a crane trolley; a control mechanism is installed in the cabinet, the control mechanism is used for receiving control instructions remotely sent by a control room; the control mechanism is integrated with a crane electric hoist control unit, a crane control unit and a trolley control unit; further comprising: a detection mechanism installed in the cabinet; a protection mechanism installed in the cabinet and used for protecting the control mechanism after the cabinet loosens; the detection mechanism comprises a driving assembly, an elastic assembly, a limiting assembly, a clamping assembly, a piston cylinder one and a lifting rod; the piston cylinder one is installed in the cabinet, the driving assembly is installed in the piston cylinder one; the lifting rod is installed in the driving assembly and the elastic assembly is limited; the elastic assembly is installed on the cabinet and abuts against the guardrail, the movable end of the elastic assembly is connected in the lifting rod; the limiting assembly is installed on the elastic assembly and used for limiting the use of the elastic assembly; the clamping assembly is installed on the elastic assembly and used for clamping the guardrail; the contact limiting assembly makes the elastic assembly abut against the guardrail, after the cabinet loosens, the elastic assembly is away from the cabinet, so that the lifting rod extends out of the cabinet.

[0007] Preferably, the driving assembly comprises an elastic piece, a piston plate, a reflective sticker and a conical groove; the two ends of the elastic piece are connected with the piston cylinder one and the piston plate respectively; the lifting rod is installed on the piston plate; the reflective sticker is installed on the top of the lifting rod; the conical groove is opened in the lifting rod, and the lifting rod is connected with the elastic assembly through the conical groove.

[0008] Preferably, the elastic assembly comprises a spring one, a conical rod and a fitting piece; the two ends of the spring one are connected with the cabinet and the fitting piece respectively; the clamping assembly is installed in the fitting piece; the conical rod is installed on the side of the fitting piece close to the spring one and penetrates through the cabinet to connect the lifting rod.

[0009] Preferably, the limiting assembly comprises a bolt, a limiting plate and an L rod; the bolt is installed in the cabinet and the limiting plate; the cabinet and the limiting plate are fixed through the bolt; the limiting plate is installed on the fitting piece; the L rod is installed outside the cabinet and sleeved in the limiting plate.

[0010] Preferably, the clamping assembly comprises a connecting pipe one, a piston cylinder two, an elastic piston shaft and a clamping plate; the two ends of the connecting pipe one are communicated with the bottom of the piston cylinder one and one end of the piston cylinder two away from the middle part of the fitting piece respectively; the piston cylinder two is installed in the fitting piece; the fixed end of the elastic piston shaft is connected in the piston cylinder two, and the movable end thereof is installed with the clamping plate; the clamping plate moves along the guide groove opened in the fitting piece; the lifting rod rises, the air in the piston cylinder two is sucked into the piston cylinder one, so that the clamping plate moves along the guide groove to the middle part of the fitting piece to clamp the guardrail.

[0011] Preferably, the protection mechanism comprises mounting frames, a sealing capsule, a connecting pipe two, a heat sink, a protection assembly and a rotating assembly; the mounting frames are two in total, and are respectively arranged on the upper and lower sides of the inner cavity of the cabinet body and located on the upper and lower sides of the control mechanism; the sealing capsule is arranged in the mounting frame; one side of the heat sink is connected with the sealing capsule, and the other side is connected with the heat sink; the protection assembly is arranged on the mounting frame; the rotating assembly is arranged in the cabinet body; and the two ends of the connecting pipe two are respectively connected with the top of the piston cylinder one and the sealing capsule.

[0012] Preferably, the protection assembly comprises a cylinder, a coil spring, a rotating roller and a protective curtain; the cylinder is arranged in the cabinet body, and the coil spring is arranged in the cylinder; the rotating roller is arranged at the center of the coil spring; and the protective curtain is arranged on the rotating roller and connected with the rotating assembly through the opening end of the mounting frame.

[0013] Preferably, the rotating assembly comprises a pull rope, a take-up roller, a gear and a rack; the gear is rotatably connected in the cabinet body; the rack is arranged on the lifting rod and lifted along with the lifting rod; the rack is engaged with the gear; the two ends of the gear are both provided with the take-up roller; the two ends of the pull rope are respectively connected with the take-up roller and the protective curtain; the lifting rod drives the rack to ascend and separate from the gear, and the pull rope in the take-up roller is released by rotation, so that the protective curtain is away from the opening end of the mounting frame.

[0014] Preferably, the support carrier is provided with a mounting bracket, and the two sides of the cabinet body are connected with the mounting bracket; and the cabinet body is provided with a cabinet door.

[0015] Compared with the prior art, the above technical scheme of the present application has the following beneficial technical effects: The bolt is screwed out of the limiting plate, so that the fitting part abuts against the guardrail, and the cabinet body is mounted on the mounting bracket; in daily use, the control mechanism is remotely instructed by the control room of the port, and then the control mechanism controls the movement of the trolley and the car of the crane and the movement of the container, so that the remote control of the port container crane is realized.

[0016] In the daily use process, due to the movement of the crane, the cabinet body is loosened from the mounting bracket, at this time, the cabinet body and the mounting bracket relatively displace, at this time, the elasticity of the spring one makes the fitting part always abut against the guardrail, but due to the loosening of the cabinet body, the cabinet body is separated from the fitting part, at this time, the conical rod leaves the lifting rod to release the limiting of the lifting rod, then the piston plate is driven to ascend in the piston cylinder one by the elasticity of the elastic member, so that the lifting rod extends out of the cabinet body, and the reflective sticker on the lifting rod reminds the staff, so that the staff only needs to observe whether the reflective sticker extends out below the crane, to judge whether the cabinet body needs to be installed and maintained, so that the staff no longer needs to frequently climb the crane to maintain the cabinet body, and the convenience of the staff during inspection is greatly improved. The air in the inner cavity of the piston cylinder two is drawn into the inner cavity of the piston cylinder one along the connecting pipe one when the piston plate rises, so as to drive the elastic piston shaft to move in the inner cavity of the piston cylinder two, drive the clamping plate to move to the middle part of the fitting part, and clamp the guardrail through the clamping plate, so that the stability of the cabinet body is increased to a certain extent in a short time, and the cabinet body is slowed down in a short time.

[0017] When the lifting rod rises, the rack is driven to rise, the gear is rotated through the meshing of the gear and the rack, the take-up roller is rotated to release the pull rope, the elasticity of the coil spring drives the rotating roller to rotate at this time, the rotating roller makes the protective curtain leave the opening end of the mounting frame, so as to be wound on the surface of the rotating roller, and the piston plate rises in the inner cavity of the piston cylinder one, the water in the inner cavity of the piston cylinder one is pushed into the inner cavity of the sealing capsule along the connecting pipe two, so that the sealing capsule is expanded, the control mechanism is wrapped and supported, so that the control mechanism is not loosened when the cabinet body is slightly loosened and the movement of the crane increases the shaking amplitude of the cabinet body, and the heat absorbed by the sealing capsule is transmitted to the outside of the cabinet body through the heat dissipation fins on the sealing capsule, so as to assist in heat dissipation of the control mechanism. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is a structural schematic view of the present application; Figure 2 It is a structural schematic view of the clamping plate proposed by the present application; Figure 3 It is a structural schematic view of the control mechanism proposed by the present application; Figure 4 It is a structural schematic view of the protective curtain proposed by the present application; Figure 5 It is the present application Figure 4 It is an enlarged schematic view of A in the present application; Figure 6 It is the present application Figure 4 It is an enlarged schematic view of B in the present application; Figure 7 It is the present application Figure 4 It is an enlarged schematic view of C in the present application; Figure 8 It is a structural schematic view of the elastic member proposed by the present application; Figure 9 It is a structural schematic view of the connecting pipe one proposed by the present application; Figure 10 It is a structural schematic view of the piston cylinder two proposed by the present application; Reference numerals: 1. Cabinet; 2. Supporting carrier; 3. Guardrail; 4. Mounting frame; 5. Control mechanism; 6. Piston cylinder one; 7. Elastic element; 8. Piston plate; 9. Lifting rod; 10. Reflective tape; 11. Conical groove; 12. Spring one; 13. Conical rod; 14. Fitting part; 15. Bolt; 16. Limiting plate; 17. Connecting pipe one; 18. Piston cylinder two; 19. Elastic piston shaft; 20. Clamping plate; 21. Mounting frame; 22. Sealing bladder; 23. Connecting pipe two; 24. Heat sink; 25. Cylinder; 26. Coil spring; 27. Rotating roller; 28. Protective curtain; 29. ​​Pull rope; 30. Take-up roller; 31. L-bar; 32. Gear; 33. Rack. Detailed Implementation

[0019] Example 1, as Figures 1-10 As shown, the present invention proposes a crane control device, comprising a cabinet 1, a support carrier 2, a detection mechanism, a protective mechanism, and a guardrail 3. The cabinet 1 is mounted on the support carrier 2; the guardrail 3 is mounted on the support carrier 2; the support carrier 2 is the crane frame or the crane trolley; a control mechanism 5 is installed inside the cabinet 1, which is used to receive control commands remotely sent from the control room; the control mechanism 5 integrates the crane's electric hoist control unit, crane trolley control unit, and crane control unit; the detection mechanism is installed inside the cabinet 1; the protective mechanism is installed inside the cabinet 1 and is used to protect the control mechanism 5 if the cabinet 1 becomes loose; the detection mechanism... It includes a drive assembly, an elastic assembly, a limiting assembly, a clamping assembly, a piston cylinder 6, and a lifting rod 9; the piston cylinder 6 is installed inside the cabinet 1, and the drive assembly is installed inside the piston cylinder 6; the lifting rod 9 is installed inside the drive assembly and is limited by the elastic assembly; the elastic assembly is installed on the cabinet 1 and abuts against the guardrail 3, and the movable end of the elastic assembly is engaged inside the lifting rod 9; the limiting assembly is installed on the elastic assembly and is used to limit the use of the elastic assembly; the clamping assembly is installed on the elastic assembly and is used to clamp the guardrail 3; when the limiting assembly is contacted, the elastic assembly abuts against the guardrail 3, and after the cabinet 1 becomes loose, the elastic assembly moves away from the cabinet 1, causing the lifting rod 9 to extend upward out of the cabinet 1.

[0020] The drive assembly includes an elastic element 7, a piston plate 8, a reflective sticker 10, and a conical groove 11. The two ends of the elastic element 7 are connected to the piston cylinder 6 and the piston plate 8, respectively. The lifting rod 9 is installed on the piston plate 8. The reflective sticker 10 is installed on the top of the lifting rod 9. The conical groove 11 is opened on the lifting rod 9, and the lifting rod 9 is engaged by the elastic assembly through the conical groove 11. After the cabinet 1 becomes loose, the lifting rod 9 is released from its limit. Then, the elasticity of the elastic element 7 drives the piston plate 8 to move inside the piston cylinder 6, causing the piston plate 8 to drive the lifting rod 9 to rise. This causes the reflective sticker 10 to leave the inner cavity of the cabinet 1, reminding the staff. When the staff climbs the stairs to the cabinet 1, they press down on the lifting rod 9 to drive the piston plate 8 to descend inside the piston cylinder 6.

[0021] The elastic assembly comprises a spring 12, a conical rod 13 and a fitting part 14; two ends of the spring 12 are connected with the cabinet 1 and the fitting part 14 respectively; the clamping assembly is installed in the fitting part 14; the conical rod 13 is installed on the side of the fitting part 14 close to the spring 12 and penetrates the cabinet 1 to be clamped with the lifting rod 9; after the lifting rod 9 is popped out of the cabinet 1, the staff member presses the lifting rod 9 back into the cabinet 1, and then the cabinet 1 is connected and fastened with the mounting frame 4.

[0022] The limiting assembly comprises a bolt 15, a limiting plate 16 and an L-shaped rod 31; the bolt 15 is installed in the cabinet 1 and the limiting plate 16; the cabinet 1 and the limiting plate 16 are fixed by the bolt 15; the limiting plate 16 is installed on the fitting part 14; the L-shaped rod 31 is installed outside the cabinet 1 and sleeved in the limiting plate 16; when the cabinet 1 is installed, the bolt 15 is screwed into the cabinet 1 and the limiting plate 16 to fix the position of the fitting part 14, so as to avoid the inconvenience caused by the fitting part 14 being pushed out of the cabinet 1 by the spring 12 during the installation; the L-shaped rod 31 is arranged to avoid the distance between the fitting part 14 and the cabinet 1 being too far.

[0023] The clamping assembly comprises a connecting pipe 17, a piston cylinder 18, an elastic piston shaft 19 and a clamping plate 20; two ends of the connecting pipe 17 are communicated with the bottom of the piston cylinder 1 and the end of the piston cylinder 2 away from the middle part of the fitting part 14 respectively; the piston cylinder 18 is installed in the fitting part 14; the fixed end of the elastic piston shaft 19 is connected in the piston cylinder 18, and the movable end thereof is installed with the clamping plate 20; the clamping plate 20 moves along the guide groove formed in the fitting part 14; the lifting rod 9 is lifted to suck the air in the piston cylinder 18 into the piston cylinder 1, so that the clamping plate 20 moves along the guide groove to the middle part of the fitting part 14 to clamp the guardrail 3; when the cabinet 1 is installed, the clamping plate 20 passes through the gap of the guardrail 3; after the piston plate 8 is lifted in the cavity of the piston cylinder 1, the air in the piston cylinder 18 is sucked out along the connecting pipe 17, so that the elastic piston shaft 19 moves along the piston cylinder 18 to drive the clamping plate 20 to move to the middle part of the fitting part 14, thereby clamping the guardrail 3 by the clamping plate 20 to temporarily reinforce; the elastic piston shaft 19 is composed of a spring 2 and a piston shaft; two ends of the spring 2 are connected with the piston cylinder 18 and the large end of the elastic piston shaft 19 respectively; the small end of the elastic piston shaft 19 penetrates the piston cylinder 18 to be connected with the clamping plate 20.

[0024] In the embodiment two, as Figures 1-8Compared with the first embodiment, the protection mechanism of the present application includes mounting frame 21, sealing bag 22, connecting pipe two 23, heat sink 24, protection assembly and rotating assembly; there are two mounting frames 21, which are respectively installed on the upper and lower sides of the inner cavity of the cabinet 1 and located on the upper and lower sides of the control mechanism 5; the sealing bag 22 is installed in the mounting frame 21, and one side of the heat sink 24 is connected with the sealing bag 22 and the other side is connected with the heat sink 24; the protection assembly is installed on the mounting frame 21; the rotating assembly is installed in the cabinet 1; the two ends of the connecting pipe two 23 are respectively connected with the top of the piston cylinder one 6 and the sealing bag 22; the sealing bag 22 is a retractable sealing body; when the piston plate 8 rises in the inner cavity of the piston cylinder one 6, the water in the inner cavity of the piston cylinder one 6 is pushed to the sealing bag 22 along the connecting pipe two 23, so that the sealing bag 22 expands to wrap the upper and lower sides of the control mechanism 5, and the water in the inner cavity of the sealing bag 22 and the elasticity of the sealing bag 22 itself temporarily wrap and support the control mechanism 5.

[0025] The protection assembly includes cylinder 25, coil spring 26, rotating roller 27 and protective curtain 28; the cylinder 25 is installed in the cabinet 1, and the coil spring 26 is installed in the cylinder 25; the rotating roller 27 is installed at the center of the coil spring 26; the protective curtain 28 is installed on the rotating roller 27 and connected with the rotating assembly through the open end of the mounting frame 21; the sealing bag 22 is shielded by the protective curtain 28, so as to avoid the sealing bag 22 from being damaged by bumping during daily use and operation of the control mechanism 5 by the staff.

[0026] The rotating assembly includes pull rope 29, take-up roller 30, gear 32 and rack 33; the gear 32 is rotatably connected in the cabinet 1; the rack 33 is installed on the lifting rod 9 and rises and falls with the lifting rod 9; the rack 33 is engaged with the gear 32; the two ends of the gear 32 are both installed with the take-up roller 30; the two ends of the pull rope 29 are respectively connected with the take-up roller 30 and the protective curtain 28; the lifting rod 9 drives the rack 33 to rise and separate from the gear 32, and the pull rope 29 in the take-up roller 30 is released by rotation, so that the protective curtain 28 leaves the open end of the mounting frame 21; in the initial state, the protective curtain 28 is pulled by the pull rope 29, and the coil spring 26 is in a compressed state; when the rack 33 rises and drives the gear 32 to rotate and then separates from the gear 32, the take-up roller 30 is rotated to release the pull rope 29, so that the protective curtain 28 is wound on the surface of the rotating roller 27; when the piston plate 8 at the bottom end of the lifting rod 9 descends in the inner cavity of the piston cylinder one 6, the rack 33 is re-engaged with the gear 32, so that the take-up roller 30 rotates to wind the pull rope 29, thereby pulling the protective curtain 28 to cover the open end of the mounting frame 21 to protect the sealing bag 22.

[0027] In the third embodiment, the protection mechanism of the present application includes mounting frame 21, sealing bag 22, connecting pipe two 23, heat sink 24, protection assembly and rotating assembly; there are two mounting frames 21, which are respectively installed on the upper and lower sides of the inner cavity of the cabinet 1 and located on the upper and lower sides of the control mechanism 5; the sealing bag 22 is installed in the mounting frame 21, and one side of the heat sink 24 is connected with the sealing bag 22 and the other side is connected with the heat sink 24; the protection assembly is installed on the mounting frame 21; the rotating assembly is installed in the cabinet 1; the two ends of the connecting pipe two 23 are respectively connected with the top of the piston cylinder one 6 and the sealing bag 22; the sealing bag 22 is a retractable sealing body; when the piston plate 8 rises in the inner cavity of the piston cylinder one 6, the water in the inner cavity of the piston cylinder one 6 is pushed to the sealing bag 22 along the connecting pipe two 23, so that the sealing bag 22 expands to wrap the upper and lower sides of the control mechanism 5, and the water in the inner cavity of the sealing bag 22 and the elasticity of the sealing bag 22 itself temporarily wrap and support the control mechanism 5. Figure 1 and Figure 2As shown, the crane control device provided by the present application, compared with the second embodiment, the support carrier 2 is provided with a mounting rack 4, and the two sides of the cabinet body 1 are connected with the mounting rack 4; the cabinet body 1 is provided with a cabinet door.

[0028] In the present application, the support carrier 2 can be a trolley or a frame of a crane; then the cabinet body 1 is mounted on the mounting rack 4, so that the fitting part 14 abuts against the guardrail 3, and the clamping plates 20 are inserted into the gap of the guardrail 3; then the bolt 15 is screwed, the fixing of the cabinet body 1 and the limiting plate 16 is released, and then the control mechanism 5 receives the remote control instruction generated in the port control room, so as to control the overall operation of the crane; In the daily use process, due to the movement of the crane, the cabinet body 1 and the mounting rack 4 are loose, at this time, there is a gap between the cabinet body 1 and the guardrail 3, and the fitting part 14 is always in contact with the guardrail 3 through the elasticity of the spring 12, so the conical rod 13 is separated from the lifting rod 9, the limiting of the lifting rod 9 is released, and the piston plate 8 in the piston cylinder 6 is lifted through the elasticity of the elastic part 7, so that the reflective sticker 10 on the lifting rod 9 extends out of the inner cavity of the cabinet body 1, so that the staff below the crane can better find the reflective sticker 10, so as to maintain the cabinet body 1, and because the conical rod 13 and the lifting rod 9 are separated, the looseness between the cabinet body 1 and the mounting rack 4 is within a controllable range, and only the reflective sticker 10 is used to remind the staff; After the piston plate 8 is lifted, the air in the inner cavity of the piston cylinder 18 is drawn into the piston cylinder 6 through the connecting pipe 17, so that the elastic piston shaft 19 moves to the center of the fitting part 14 along the piston cylinder 18, so as to clamp the guardrail 3 through the two clamping plates 20, thereby temporarily reinforcing the cabinet body 1; When the piston plate 8 is lifted in the inner cavity of the piston cylinder 6, the rack 33 is lifted, so that the rotating gear 32 drives the take-up roller 30 to rotate and release the pull rope 29 through the meshing of the gear 32 and the rack 33, and the rotating roller 27 is rotated through the elasticity of the rotating roller 27, so that the protective curtain 28 is wound on the surface of the rotating roller 27, so that the protective curtain 28 leaves the opening end of the mounting frame 21, and the water in the piston cylinder 6 is transported into the sealing capsule 22 through the connecting pipe 23, so as to drive the sealing capsule 22 to expand, thereby driving the two sealing capsules 22 to support and protect the control mechanism 5 from the upper and lower ends of the control mechanism 5, so as to avoid that the cabinet body 1 is loose, and the control mechanism 5 is subjected to a large impact force, and the water in the sealing capsule 22 is assisted to be cooled through the cooling fins 24, so as to realize temporary support and protection of the control mechanism 5 while assisting cooling.

[0029] The embodiments of the present application are described in detail above with reference to the accompanying drawings, but the present application is not limited to the embodiments, and various changes can be made by those skilled in the art within the scope of knowledge acquired from the present disclosure, without departing from the spirit of the present application.

Claims

1. A crane control device, comprising a cabinet (1), a support carrier (2), and a guardrail (3), wherein the cabinet (1) is mounted on the support carrier (2); the guardrail (3) is mounted on the support carrier (2); the support carrier (2) is the crane frame or the crane trolley; a control mechanism (5) is installed inside the cabinet (1), the control mechanism (5) being used to receive control commands remotely sent from the control room; the control mechanism (5) integrates the crane's electric hoist control unit, the crane trolley control unit, and the crane crane control unit; characterized in that, Also includes: The testing facility is installed inside the cabinet (1); The protective mechanism is installed inside the cabinet (1) and is used to protect the control mechanism (5) after the cabinet (1) becomes loose; The testing mechanism includes a drive assembly, an elastic assembly, a limiting assembly, a clamping assembly, a piston cylinder (6), and a lifting rod (9); the piston cylinder (6) is installed inside the cabinet (1), and the drive assembly is installed inside the piston cylinder (6); the lifting rod (9) is installed inside the drive assembly and the elastic assembly limits it; the elastic assembly is installed on the cabinet (1) and abuts against the guardrail (3), and the movable end of the elastic assembly is engaged inside the lifting rod (9); the limiting assembly is installed on the elastic assembly and is used to limit the use of the elastic assembly; the clamping assembly is installed on the elastic assembly and is used to clamp the guardrail (3); when the limiting assembly is contacted, the elastic assembly abuts against the guardrail (3), and after the cabinet (1) becomes loose, the elastic assembly moves away from the cabinet (1), causing the lifting rod (9) to extend upward out of the cabinet (1).

2. The crane control device according to claim 1, characterized in that, The drive assembly includes an elastic element (7), a piston plate (8), a reflective sticker (10), and a conical groove (11); the two ends of the elastic element (7) are connected to the piston cylinder (6) and the piston plate (8), respectively; the lifting rod (9) is installed on the piston plate (8); the reflective sticker (10) is installed on the top of the lifting rod (9); the conical groove (11) is opened on the lifting rod (9), and the lifting rod (9) is engaged by the elastic assembly through the conical groove (11).

3. A crane control device according to claim 1, characterized in that, The elastic component includes a spring (12), a tapered rod (13), and a fitting (14); the two ends of the spring (12) are connected to the cabinet (1) and the fitting (14) respectively; the clamping component is installed inside the fitting (14); the tapered rod (13) is installed on the side of the fitting (14) near the spring (12) and passes through the cabinet (1) to engage the lifting rod (9).

4. A crane control device according to claim 3, characterized in that, The limiting assembly includes a bolt (15), a limiting plate (16), and an L-rod (31); the bolt (15) is installed inside the cabinet (1) and the limiting plate (16); the cabinet (1) and the limiting plate (16) are fixed by the bolt (15); the limiting plate (16) is installed on the fitting (14); the L-rod (31) is installed outside the cabinet (1) and is sleeved inside the limiting plate (16).

5. A crane control device according to claim 3, characterized in that, The clamping assembly includes a connecting pipe (17), a piston cylinder (18), an elastic piston shaft (19), and a clamping plate (20); the two ends of the connecting pipe (17) are respectively connected to the bottom of the piston cylinder (6) and the end of the piston cylinder (18) away from the middle of the fitting (14); the piston cylinder (18) is installed inside the fitting (14); the fixed end of the elastic piston shaft (19) is connected inside the piston cylinder (18), and the clamping plate (20) is installed at its movable end; the clamping plate (20) moves along the guide groove opened on the fitting (14); the lifting rod (9) rises, drawing the air in the piston cylinder (18) into the piston cylinder (6), so that the clamping plate (20) moves along the guide groove toward the middle of the fitting (14) to clamp the guardrail (3).

6. A crane control device according to claim 1, characterized in that, The protective mechanism includes a mounting frame (21), a sealing bladder (22), a connecting pipe (23), a heat sink (24), a protective component, and a rotating component. There are two mounting frames (21), which are installed on the upper and lower sides of the inner cavity of the cabinet (1) and on the upper and lower sides of the control mechanism (5). The sealing bladder (22) is installed inside the mounting frame (21), and one side of the heat sink (24) is connected to the sealing bladder (22) and the other side is connected to the heat sink (24). The protective component is installed on the mounting frame (21). The rotating component is installed inside the cabinet (1). The two ends of the connecting pipe (23) are connected to the top of the piston cylinder (6) and the sealing bladder (22) respectively.

7. A crane control device according to claim 6, characterized in that, The protective assembly includes a cylinder (25), a coil spring (26), a rotating roller (27), and a protective curtain (28); the cylinder (25) is installed inside the cabinet (1), the coil spring (26) is installed inside the cylinder (25); the rotating roller (27) is installed at the center of the coil spring (26); the protective curtain (28) is installed on the rotating roller (27) and passes around the opening end of the mounting frame (21) and is connected to the rotating assembly.

8. A crane control device according to claim 7, characterized in that, The rotating assembly includes a pull rope (29), a take-up roller (30), a gear (32), and a rack (33); the gear (32) is rotatably connected inside the cabinet (1); the rack (33) is mounted on the lifting rod (9) and moves up and down with the lifting rod (9); the rack (33) meshes with the gear (32); take-up rollers (30) are installed at both ends of the gear (32); the two ends of the pull rope (29) are connected to the take-up roller (30) and the protective curtain (28) respectively; the lifting rod (9) drives the rack (33) to rise and separate from the gear (32), and the pull rope (29) inside the take-up roller (30) is rotated and released, so that the protective curtain (28) leaves the opening end of the mounting frame (21).

9. A crane control device according to claim 1, characterized in that, A mounting frame (4) is installed on the support carrier (2), and the two sides of the cabinet (1) are connected to the mounting frame (4); a cabinet door is installed on the cabinet (1).

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