A hydraulic rope breaking stopping device and method for tower crane luffing trolley

Abstract

The present invention belongs to the technical field of crane safety protection, and discloses a hydraulic rope-breaking stop device and method for a tower crane luffing trolley, including an energy storage safety module, a rope-breaking trigger module and a jacking stop module; the energy storage safety module, the rope-breaking trigger module and the jacking stop module are all fixed on the outside of the trolley crossbeam, the energy storage safety module is connected to the rope-breaking trigger module through a hydraulic hose, and the rope-breaking trigger module is connected to the jacking stop module through a hydraulic hose; the energy storage safety module is used to provide a jacking power source; the rope-breaking trigger module is used to release the accumulator pressure into the jacking stop module when the rope breaks. The present invention uses a hydraulic control method, has reliable rope-breaking protection, simple structure, and convenient installation and adjustment, and overcomes the previous phenomenon that the traction wire rope of the tower crane luffing double trolley and the single trolley suddenly breaks during operation, and the luffing trolley cannot be effectively stopped. The use of this hydraulic system to drive the jacking device has a reliable and convenient stopping effect.

Description

Technical Field

[0001] The invention belongs to the technical field of crane safety protection, and in particular relates to a hydraulic rope breaking stopping device and method for a tower crane luffing trolley. Background Art

[0002] At present, the rope-breaking protection device of the tower crane luffing trolley is a key module in the safe operation of tower cranes. Both double trolleys and single trolleys must be equipped with a reliable rope-breaking protection device. However, the rope-breaking protection device of the existing luffing trolley often fails due to the influence of various factors, especially when the rope breaks during the operation of the large-tonnage double luffing trolley. Since the wire rope of the tower crane luffing trolley is thicker, when the wire rope breaks when the trolley is pulling, the rope-breaking flipping device cannot flip up normally, and the wire rope lifts up the flipping device, resulting in the failure of the rope-breaking protection device, which can easily cause the trolley to be unable to stop, bringing danger to the operation of the tower crane and posing certain safety hazards.

[0003] Through the above analysis, the problems and defects of the prior art are as follows:

[0004] (1) The existing rope-breaking protection device of the luffing trolley often fails due to various factors.

[0005] (2) When the wire rope of the trolley breaks, the broken rope flipping device cannot flip up normally, and the wire rope will lift up the flipping device, causing the broken rope protection device to fail, which may easily cause the trolley to be unable to stop. Summary of the invention

[0006] In view of the problems existing in the prior art, the present invention provides a hydraulic rope breaking stopping device and method for a tower crane luffing trolley.

[0007] The present invention is implemented in this way: a hydraulic rope breaking stopping device for a tower crane luffing trolley comprises:

[0008] Energy storage safety module, rope breaking trigger module and lifting stop module;

[0009] The energy storage safety module, the rope breaking trigger module and the lifting stop module are all fixed on the outside of the trolley cross beam, the energy storage safety module is connected to the rope breaking trigger module through a hydraulic hose, and the rope breaking trigger module is connected to the lifting stop module through a hydraulic hose;

[0010] The energy storage safety module is used to charge the hydraulic oil into the accumulator at a certain pressure and lock the hydraulic oil to provide a lifting power source;

[0011] The rope breaking trigger module is used to release the accumulator pressure into the lifting stop module when the rope breaks;

[0012] The lifting stop module is used to stop the rope breaking of the luffing trolley by raising the lifting stop rod.

[0013] Furthermore, the energy storage safety module includes an accumulator and an energy storage safety block, the accumulator is installed on the upper end of the energy storage safety block, and the energy storage safety block is connected to the rope breaking trigger module through a hydraulic hose.

[0014] Furthermore, the rope breaking trigger module includes a mounting frame, a gravity block and a two-position two-way zero-leakage valve. Tracks are provided on both sides of the mounting frame. The gravity block is installed in the middle of the mounting frame through the tracks. A connecting ring is welded on the upper end of the gravity block, and the wire rope of the boom trolley passes through the middle of the connecting ring.

[0015] Furthermore, the two-position two-way zero-leakage valve is located at the lower side of the gravity block, and both ends of the two-position two-way zero-leakage valve are respectively connected to the energy storage safety module and the lifting stop module.

[0016] Furthermore, the lifting stop module includes a mounting seat, a lifting cylinder and a lifting stop rod, wherein the lifting cylinder is fixed at the lower end of the mounting seat, the lifting stop rod is located at the upper end of the mounting seat, and the lower end of the lifting stop rod is connected to the upper end of the output shaft of the lifting cylinder.

[0017] Furthermore, a lifting sleeve is fixed to the upper end of the mounting seat, and the lifting sleeve is arranged on the outside of the lifting stop rod.

[0018] Another object of the present invention is to provide a tower crane luffing trolley hydraulic rope breaking stopping method, the tower crane luffing trolley hydraulic rope breaking stopping method comprising:

[0019] Step 1: Inflate the accumulator, and then fill the inflated accumulator with a certain pressure and a certain amount of hydraulic oil;

[0020] Step 2: When the wire rope breaks, the gravity block of the wire rope breaking trigger module presses down the two-position two-way zero leakage valve along the track of the mounting frame under the action of gravity;

[0021] Step 3: The hydraulic oil flowing out of the outlet of the two-position two-way zero leakage valve flows into the lifting cylinder of the lifting stop module, and the lifting cylinder lifts the lifting stop rod to protect the luffing trolley from rope breakage;

[0022] Step 4. When the luffing trolley resumes normal operation, the lifting stop rod of the lifting stop module is pressed down to fill the hydraulic oil in the lifting cylinder back into the accumulator. The wire rope of the luffing trolley lifts the gravity block in the rope break trigger module to a certain height. The two-position two-way zero-leakage valve is reset by the spring to lock the hydraulic oil in the accumulator. The lifting cylinder is in a dropped state and the lifting stop rod is retracted.

[0023] Combining all the above technical solutions, the advantages and positive effects of the present invention are as follows: the present invention uses hydraulic control, has reliable rope breaking protection, simple structure, convenient installation and adjustment, and overcomes the previous phenomenon that the traction wire rope of the double trolley and the single trolley of the tower crane suddenly breaks during operation, and the luffing trolley cannot be effectively stopped. The use of this hydraulic system to drive the jacking device has a reliable and convenient stopping effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following is a brief introduction to the drawings required for use in the embodiments of the present application. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0025] Figure 1 The invention is a schematic structural diagram of a hydraulic rope-breaking stopping device for a tower crane luffing trolley provided in an embodiment of the present invention.

[0026] Figure 2 It is a structural schematic diagram of the energy storage safety module provided in an embodiment of the present invention.

[0027] Figure 3 It is a structural schematic diagram of a rope breaking trigger module provided in an embodiment of the present invention.

[0028] Figure 4 It is a structural schematic diagram of a lifting and stopping module provided in an embodiment of the present invention.

[0029] Figure 5 It is a hydraulic principle diagram provided by an embodiment of the present invention.

[0030] In the figure: 1. Energy storage safety module; 11. Accumulator; 12. Energy storage safety block; 2. Rope break trigger module; 21. Gravity block; 22. Two-position two-way zero leakage valve; 23. Mounting frame; 24. Wire rope; 3. Lifting stop module; 31. Lifting stop rod; 32. Lifting sleeve; 33. Lifting cylinder; 34. Mounting seat; 4. Trolley crossbeam; 5. Hydraulic hose. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0032] In view of the problems existing in the prior art, the present invention provides a hydraulic rope breaking stopping device and method for a tower crane luffing trolley. The present invention is described in detail below in conjunction with the accompanying drawings.

[0033] like Figure 1As shown, the hydraulic rope-breaking stopping device for the tower crane luffing trolley provided in the embodiment of the present invention comprises an energy storage safety module 1, a rope-breaking triggering module 2 and a lifting stopping module 3.

[0034] The energy storage safety module 1, the rope breaking trigger module 2 and the lifting stop module 3 are all fixed on the trolley cross beam 4. The energy storage safety module 1 is connected to the rope breaking trigger module 2 through a hydraulic hose 5, and the rope breaking trigger module 2 is connected to the lifting stop module 3 through a hydraulic hose.

[0035] like Figure 2 As shown, the energy storage safety component provided in the embodiment of the present invention includes an accumulator 11 and an energy storage safety block 12. The accumulator 11 is installed on the upper end 12 of the energy storage safety block. The energy storage safety block 12 is provided with an oil port, which is connected to the rope breaking trigger module through a hydraulic hose. The main function of the oil port is to charge the hydraulic oil into the accumulator at a certain pressure and lock the hydraulic oil to provide a lifting power source.

[0036] like Figure 3 As shown, the rope breaking trigger module 2 provided in the embodiment of the present invention has a symmetrical long strip track on both sides of the mounting frame 23, a gravity block 21 is connected in the middle of the track by sliding, a two-position two-way zero leakage valve 22 is fixed on the lower side of the gravity block 21, a connecting ring is welded on the upper end of the gravity block 21, and a steel wire rope 24 passes through the connecting ring.

[0037] like Figure 4 As shown, the jacking stop module provided in the embodiment of the present invention is composed of a jacking stop rod 31, a jacking sleeve 32, a jacking cylinder 33 and a component mounting seat 34. The component mounting seat 34 is fixedly connected to the trolley cross beam by bolts, the jacking sleeve 32 is welded and fixed to the mounting seat 34, the jacking stop rod 31 is embedded in the jacking sleeve 32, and the lower end of the jacking cylinder 33 is provided with an oil port.

[0038] When the hydraulic rope-breaking stop device of the tower crane luffing trolley provided by the embodiment of the present invention is used, the accumulator is first inflated, and then the inflated accumulator is filled with a certain pressure and a certain amount of hydraulic oil. When the wire rope breaks, the gravity block of the rope-breaking trigger module presses down the two-position two-way zero-leakage valve along the track under the action of gravity. At this time, the hydraulic oil flowing out of the outlet of the two-position two-way zero-leakage valve flows into the jacking cylinder of the jacking stop module, and the jacking cylinder lifts the jacking stop rod to protect the luffing trolley from rope breaking. When operating normally, the jacking stop rod of the jacking stop module is pressed down with force (hand pressure can be used) to make the hydraulic oil in the jacking cylinder return to the accumulator, and the wire rope of the luffing trolley lifts the weight in the rope-breaking component to a certain height. At this time, the zero-leakage two-position two-way valve locks (closes) the hydraulic oil in the accumulator under the action of the spring, and the jacking cylinder is in a falling state, and the jacking stop rod is recovered.

[0039] In the description of the present invention, unless otherwise specified, "plurality" means two or more than two; the orientations or positional relationships indicated by the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail", etc. are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", "third", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0040] The above description is only a specific implementation mode of the present invention, but the protection scope of the present invention is not limited thereto. Any modifications, equivalent substitutions and improvements made by any technician familiar with the technical field within the technical scope disclosed by the present invention and within the spirit and principle of the present invention should be covered by the protection scope of the present invention.

Claims

1. A hydraulic rope breaking stopping device for a tower crane luffing trolley, characterized in that: The tower crane luffing trolley hydraulic rope breaking stopping device comprises: Energy storage safety module, rope breaking trigger module and lifting stop module; The energy storage safety module, the rope breaking trigger module and the lifting stop module are all fixed on the outside of the trolley cross beam, the energy storage safety module is connected to the rope breaking trigger module through a hydraulic hose, and the rope breaking trigger module is connected to the lifting stop module through a hydraulic hose; The energy storage safety module is used to charge the hydraulic oil into the accumulator at a certain pressure and lock the hydraulic oil to provide a lifting power source; The rope breaking trigger module is used to release the accumulator pressure into the lifting stop module when the rope breaks; The lifting stop module is used to stop the rope breaking of the luffing trolley by raising the lifting stop rod; The energy storage safety module includes an accumulator and an energy storage safety block. The accumulator is installed on the upper end of the energy storage safety block. The energy storage safety block is connected to the rope breaking trigger module through a hydraulic hose. The rope breaking trigger module includes a mounting frame, a gravity block and a two-position two-way zero leakage valve. Tracks are provided on both sides of the mounting frame. The gravity block is installed in the middle of the mounting frame through the tracks. A connecting ring is welded on the upper end of the gravity block, and the wire rope of the variable-length trolley passes through the middle of the connecting ring.

2. The hydraulic rope breaking stopping device for the tower crane luffing trolley according to claim 1 is characterized in that: The two-position two-way zero-leakage valve is located at the lower side of the gravity block, and two ends of the two-position two-way zero-leakage valve are respectively connected to the energy storage safety module and the jacking stop module.

3. The hydraulic rope breaking stopping device for the tower crane luffing trolley according to claim 1 is characterized in that: The lifting stop module includes a mounting seat, a lifting cylinder and a lifting stop rod. The lifting cylinder is fixed to the lower end of the mounting seat, the lifting stop rod is located at the upper end of the mounting seat, and the lower end of the lifting stop rod is connected to the upper end of the output shaft of the lifting cylinder.

4. The hydraulic rope breaking stopping device for the tower crane luffing trolley according to claim 3 is characterized in that: A lifting sleeve is fixed on the upper end of the mounting seat, and the lifting sleeve is arranged on the outside of the lifting stop rod.

5. A tower crane luffing trolley hydraulic rope breaking stopping method for implementing the tower crane luffing trolley hydraulic rope breaking stopping device according to any one of claims 1 to 4, characterized in that: The tower crane luffing trolley hydraulic rope breaking stopping method comprises: Step 1: Inflate the accumulator, and then fill the inflated accumulator with a certain pressure and a certain amount of hydraulic oil; Step 2: When the wire rope breaks, the gravity block of the wire rope breaking trigger module presses down the two-position two-way zero leakage valve along the track of the mounting frame under the action of gravity; Step 3: The hydraulic oil flowing out of the outlet of the two-position two-way zero leakage valve flows into the lifting cylinder of the lifting stop module, and the lifting cylinder lifts the lifting stop rod to protect the luffing trolley from rope breakage; Step 4. When the luffing trolley resumes normal operation, the lifting stop rod of the lifting stop module is pressed down to fill the hydraulic oil in the lifting cylinder back into the accumulator. The wire rope of the luffing trolley lifts the gravity block in the rope break trigger module to a certain height. The two-position two-way zero-leakage valve is reset by the spring to lock the hydraulic oil in the accumulator. The lifting cylinder is in a dropped state and the lifting stop rod is retracted.

Images