Leveling locking device for elevator or elevator

Abstract

The invention relates to the technical field of elevators, and particularly discloses an elevator or elevator leveling locking device which comprises two vertical guide rails and a plurality of fixing assemblies, the fixing assemblies are arranged on well walls at leveling positions of all landing stations respectively, and each fixing assembly comprises two fixing seats which are arranged on the two opposite sides of the well walls and matched with the two vertical guide rails; the lift car is arranged between the two vertical guide rails in a sliding mode, and an upper beam extending towards the two opposite sides is arranged at the top of the lift car; the two clamping assemblies are arranged on the two opposite sides of the upper beam in a diagonal mode, and each clamping assembly comprises two lever hydraulic cylinders arranged on the upper side and the lower side of the upper beam. The hydraulic control system is used for controlling the four lever hydraulic cylinders to act to be matched with the fixing bases at the leveling positions of all the floors so that the lift car can be prevented from moving, the problem of uneven floors caused by cargo loading and unloading can be solved, the stability of the lift car is guaranteed, and therefore it is guaranteed that cargoes enter and exit safely, stably and effectively, and the requirements of customers are met perfectly.

Description

Technical Field

[0001] The present invention relates to the technical field of elevators, and in particular to a leveling locking device for an elevator or a lifting machine. Background Art

[0002] With the birth of intelligent manufacturing and industrialized smart factories, the demand for intelligent logistics equipment is increasing. Freight elevators and lifting equipment are gradually moving towards unmanned and intelligent handling. The widely used transportation equipment on the market is traction freight elevators or lifts. However, the fiber-core steel wire ropes used will undergo a certain degree of elastic expansion and contraction with the loading and unloading of goods, thereby affecting the leveling accuracy of the car and causing leveling errors. When loading and unloading goods next time, the leveling error causes a height difference between the car plane and the external floor surface, making it difficult for the goods to enter and exit smoothly, and even causing accidents. In particular, when AGV intelligent robots or conveyor lines (through pallets) transport goods in and out of the car, the leveling accuracy requirements are very high (for example, within ±3mm); due to the small wheels of the AGV car, coupled with the large leveling error and the sill gap, the wheels of the AGV car are easily stuck when entering and exiting the car.

[0003] In traditional technology, steel core wire rope is generally used to replace fiber core wire rope to alleviate the problem of elastic expansion and contraction of wire rope, but the elastic expansion and contraction of steel core wire rope still exists, and it cannot completely solve the problem of elastic expansion and contraction of wire rope, and cannot meet the leveling requirements of the above equipment. At the same time, due to the high hardness of the material, it will cause great damage to the traction wheel and related guide wheels, which will affect the use environment and life of the rope wheel parts, and it is not easy to bend, causing inconvenience in installation; the cost is high, which increases the burden on manufacturers and other problems.

[0004] The traditional solution is to use the door opening re-leveling function. However, the leveling error is not within the distance range of the re-leveling action, so the re-leveling function cannot be started. It is also difficult to meet the needs in places where high leveling accuracy is required.

[0005] In order to solve the above problems, the present application discloses a leveling locking device for an elevator or a lifting machine. Summary of the invention

[0006] In order to overcome the deficiencies of the prior art, the present invention discloses a leveling locking device for an elevator or a lifting machine.

[0007] In order to achieve the above object, the technical solution adopted by the present invention is: an elevator or lift leveling locking device, comprising:

[0008] Two vertical guide rails, the two vertical guide rails are respectively arranged on opposite sides of the shaft wall;

[0009] A plurality of fixed components, each of which is disposed on the shaft wall at the leveling position of each floor station, and the fixed components include two fixed seats disposed on opposite sides of the shaft wall and matched with two vertical guide rails;

[0010] A car, the car is slidably arranged between two vertical guide rails, and the top of the car is provided with an upper beam extending toward two opposite sides;

[0011] Two clamping assemblies are arranged diagonally on opposite sides of the upper beam, and the clamping assemblies include two lever hydraulic cylinders arranged on the upper and lower sides of the upper beam.

[0012] Further preferably, fixing brackets are provided on the upper and lower sides of the fixing seat respectively and connected to the well wall.

[0013] It is further preferred that the two fixing seats included in the fixing assembly are provided with reinforcing plates opposite to each other, and when the fixing seats are locked, the locking block of the lever hydraulic cylinder is pressed onto the reinforcing plates.

[0014] Further preferably, there are two upper beams, and first mounting plates are respectively provided on upper and lower sides of opposite ends of the two upper beams, and the lever hydraulic cylinder is arranged on the first mounting plates.

[0015] Further preferably, a groove is formed on the first mounting plate, and the vertical guide rail extends out of the groove.

[0016] It is further preferred that a locking switch and a retracting switch are provided on the side of the first mounting plate, and a travel plate cooperating with the locking switch and the retracting switch is provided on the locking block of the lever hydraulic cylinder.

[0017] It is further preferred that the travel plate is a 120° angle steel sheet.

[0018] It is further preferred that a second mounting plate is provided above the middle portion of the two upper beams, a hydraulic control system is provided on the second mounting plate, and the hydraulic control system is connected to four lever hydraulic cylinders.

[0019] It is further preferred that the hydraulic control system includes a fuel tank, an oil pump, a motor, a hydraulically controlled one-way valve, a double one-way throttle valve, a relief valve and four diverters, the motor is installed on the oil pump, the oil inlet of the oil pump is connected to a first pipeline extending into the fuel tank, the oil outlet of the oil pump is connected to an oil inlet of the double one-way throttle valve through a second pipeline, the hydraulically controlled one-way valve is installed on the second pipeline, four diverters are connected in series, an oil outlet of the double one-way throttle valve is connected to four diverters through a third pipeline, the four diverters are connected to the oil inlet of the lever hydraulic cylinder through a fourth pipeline, the oil outlets of the four lever hydraulic cylinders are connected to the other oil inlet of the double one-way throttle valve through a fifth pipeline, the other oil outlet of the double one-way throttle valve is connected to a sixth pipeline, a seventh pipeline is connected between the oil outlet of the oil pump and the fifth pipeline, and the relief valve is installed on the seventh pipeline.

[0020] It is further preferred that a filter is installed on the first pipeline.

[0021] The present invention achieves the following beneficial effects:

[0022] The present invention utilizes a hydraulic control system to control the movement of four lever hydraulic cylinders, which cooperate with the fixed seats at the leveling positions of each floor station to prevent the car from moving to solve the uneven floor problem caused by loading and unloading goods, thereby ensuring the stability of the car and ensuring the safe, stable and effective entry and exit of goods, perfectly meeting customer needs.

[0023] Other features and advantages of the present invention will be described in the following description, and partly become apparent from the description, or understood by practicing the present invention. The purpose and other advantages of the present invention can be realized and obtained by the structures pointed out in the description and the drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the disclosure of the present invention and, together with the description, serve to explain the principles of the disclosure.

[0025] Figure 1 It is a schematic diagram of the overall structure disclosed in the present invention;

[0026] Figure 2 It is a schematic diagram of the structure of the hydraulic control system disclosed in the present invention;

[0027] Figure 3 It is a schematic diagram of the locking state of the lever hydraulic cylinder locking block disclosed in the present invention;

[0028] Figure 4 It is a schematic diagram of the lever hydraulic cylinder locking block retracted state disclosed in the present invention;

[0029] In the figure: 10, vertical guide rail; 20, fixing assembly; 21, fixing seat; 22, fixing bracket; 30, car; 40, upper beam; 50, first mounting plate; 51, groove; 60, clamping assembly; 61, lever hydraulic cylinder; 611, locking block; 62, travel plate; 63, locking switch; 64, retraction switch; 70, second mounting plate; 80, hydraulic control system; 81, oil tank; 82, oil pump; 821, motor; 83, hydraulically controlled one-way valve; 84, double one-way throttle valve; 85, diverter; 86, overflow valve; 87, filter; 801, first pipeline; 802, second pipeline; 803, third pipeline; 804, fourth pipeline; 805, fifth pipeline; 806, sixth pipeline; 807, seventh pipeline. DETAILED DESCRIPTION

[0030] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0031] In the description of the present invention, it should be understood that the terms "opening", "upper", "lower", "thickness", "top", "middle", "length", "inside", "all around" and the like indicating orientation or positional relationship are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the components or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0032] Example

[0033] In order to solve the problem that the fiber core steel wire rope used in traction cargo elevators or lifts on the market will undergo a certain degree of elastic expansion and contraction as the cargo is loaded and unloaded, thus affecting the leveling accuracy of the car and causing leveling errors. When loading and unloading cargo next time, the leveling error causes a height difference between the car plane and the external floor surface, making it difficult for the cargo to enter and exit smoothly, and even causing accidents, reference Figure 1 As shown, the present application discloses a leveling locking device for an elevator or lift, comprising: two vertical guide rails 10, the two vertical guide rails 10 are respectively arranged on opposite sides of a hoistway wall;

[0034] A plurality of fixing components 20, the plurality of fixing components 20 are respectively arranged on the shaft wall at the leveling position of each floor station, and the fixing components 20 include two fixing seats 21 arranged on opposite sides of the shaft wall and matched with the two vertical guide rails 10;

[0035] The car 30 is slidably disposed between two vertical guide rails 10, and an upper beam 40 extending toward two opposite sides is disposed on the top of the car 30;

[0036] Two clamping assemblies 60 are disposed diagonally on opposite sides of the upper beam 40 . The clamping assemblies 60 include two lever hydraulic cylinders 61 disposed on upper and lower sides of the upper beam 40 .

[0037] Based on the above design, by controlling the movement of the four lever hydraulic cylinders 61 and cooperating with the fixed seats 21 at the leveling positions of each floor station, the movement of the car 30 can be prevented to solve the uneven floor problem caused by loading and unloading goods, thereby ensuring the stability of the car 30 and ensuring the safe, stable and effective entry and exit of goods, perfectly meeting customer needs.

[0038] refer to Figure 1 As shown, in order to fix the fixing seat 21 on the well wall, the present application provides fixing brackets 22 on the upper and lower sides of the fixing seat 21 to connect with the well wall.

[0039] In this embodiment, the present application provides reinforcing plates relatively on the two fixing seats 21 included in the fixing assembly 20. When the fixing seats 21 are locked, the locking block 611 of the lever hydraulic cylinder 61 is pressed on the reinforcing plates. In this way, the force strength of the fixing seats 21 can be guaranteed. Under the pressure of the locking block 611, the car 30 can be stable and reliable without tilting.

[0040] Preferably, there are two upper beams 40, and the opposite ends of the two upper beams 40 are respectively provided with first mounting plates 50 on the upper and lower sides thereof, and the lever hydraulic cylinder 61 is arranged on the first mounting plate 50, and in order to cooperate with the vertical guide rail 10, a groove 51 is opened on the first mounting plate 50 of the present application, and the vertical guide rail 10 passes through the groove 51. Through the above design, it can be ensured that the four lever hydraulic cylinders 61 of the present application cooperate with the fixed seat 21 at the leveling position of each floor station.

[0041] In this embodiment, the present application provides a locking switch 63 and a retraction switch 64 on the side of the first mounting plate 50, and a travel plate 62 cooperating with the locking switch 63 and the retraction switch is provided on the locking block 611 of the lever hydraulic cylinder 61. The travel plate 62 is preferably a 120° angle steel sheet. When the lever hydraulic cylinder 61 drives the locking block 611 to be in a horizontal state, the travel plate 62 will contact the locking switch 63. At this time, it means that the locking block 611 has clamped the fixed seat 21. Conversely, when the lever hydraulic cylinder 61 drives the locking block 611 to be in an inclined state, the travel plate 62 will contact the retraction switch. At this time, it means that the locking block 611 is in a loose state with respect to the fixed seat 21.

[0042] refer to Figure 1 and Figure 2As shown, in order to control the four lever hydraulic cylinders 61 of the present application, the present application is provided with a second mounting plate 70 above the middle of the two upper beams 40, and a hydraulic control system 80 is provided on the second mounting plate 70. The hydraulic control system 80 is connected to the four lever hydraulic cylinders 61. The hydraulic control system 80 of the present application includes an oil tank 81, an oil pump 82, a motor 821, a hydraulically controlled one-way valve 83, a double one-way throttle valve 84, a relief valve 86 and four diverters 85. The motor 821 is installed on the oil pump 82, and the oil inlet of the oil pump 82 is connected to the first pipeline 801 extending into the oil tank 81. A filter 87 is installed on the first pipeline 801, and the oil outlet of the oil pump 82 is connected to the double one-way throttle valve 84 through the second pipeline 802. An oil inlet of the throttle valve 84 is connected, the hydraulically controlled one-way valve 83 is installed on the second pipeline 802, four diverters 85 are connected in series, an oil outlet of the double one-way throttle valve 84 is connected to the four diverters 85 through the third pipeline 803, the four diverters 85 are connected to the oil inlet of the lever hydraulic cylinder 61 through the fourth pipeline 804, the oil outlets of the four lever hydraulic cylinders 61 are connected to the other oil inlet of the double one-way throttle valve 84 through the fifth pipeline 805, the other oil outlet of the double one-way throttle valve 84 is connected to the sixth pipeline 806, a seventh pipeline 807 is connected between the oil outlet of the oil pump 82 and the fifth pipeline 805, and the overflow valve 86 is installed on the seventh pipeline 807.

[0043] Driven by the motor, the oil pump 82 draws the hydraulic oil in the oil tank 81 through the hydraulically controlled one-way valve 83 and the double one-way throttle valve (the corresponding oil inlet and oil outlet are open) to the four diverters 85, and the hydraulic oil is injected into the four lever hydraulic cylinders 61 through the four diverters 85 to control the action of the hydraulic oil. Conversely, the two-way throttle valve (the other oil inlet and oil outlet are open) will flow the hydraulic oil of the lever hydraulic cylinder 61 into the oil tank 81 through the two-way throttle valve, and the filter 87 can effectively filter the hydraulic oil, and the overflow valve 86 can protect the entire system.

[0044] Based on the above structure and reference Figure 3 and Figure 4 As shown, the action principle of the four lever hydraulic cylinders 61 and the fixing seat 21 is described as follows:

[0045] Locking action principle: When the elevator stops at the leveling position and the door is opening, under the control system of the hydraulic control system 80, the four lever hydraulic cylinders 61 act synchronously, the push rod in the lever hydraulic cylinder 61 is lifted up by the piston, and the locking block 611 slowly changes from the original open state to the parallel state. After the travel plate 62 installed on the locking block 611 triggers the locking switch 63 to act, the lever hydraulic cylinder 61 stops working, and the locking block 611 locks the upper and lower ends of the fixed seat 21, and the car 30 is locked and cannot move; the elevator door is opened, and the cargo is always kept stable during loading and unloading;

[0046] Principle of retraction action: After the cargo loading and unloading is completed, during the door closing process, under the control system of the hydraulic control system 80, the lever hydraulic cylinder 61 slowly releases oil and pressure to retract the piston, driving the top rod in the clamp cylinder to slowly retract, and the locking block 611 slowly opens. After the travel plate 62 installed on the locking block 611 triggers the action of the retraction switch 64, the lever hydraulic cylinder 61 stops working, during which time it is ensured that the car 30 smoothly transitions from the locked state of the locking block 611 to the released state, and the elevator or hoist starts to run to the destination floor.

[0047] If there is no task for a period of time after delivery, the lever hydraulic cylinder 61 is released and returns to the base station to keep the door closed to prevent the lever hydraulic cylinder 61 from releasing pressure for too long and affecting the leveling accuracy. When the door is opened again, the above locking action is repeated.

[0048] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0049] The above embodiments are only for illustrating the technical concept and features of the present invention, and their purpose is to enable technicians familiar with the technical field to understand the content of the present invention and implement it accordingly, and they cannot be used to limit the protection scope of the present invention. Any equivalent changes or modifications made according to the spirit of the present invention should be included in the protection scope of the present invention.

Claims

1. A leveling locking device for an elevator or lift, It is characterized in that include: Two vertical guide rails, the two vertical guide rails are respectively arranged on opposite sides of the shaft wall; A plurality of fixed components, each of which is disposed on the shaft wall at the leveling position of each floor station, and the fixed components include two fixed seats disposed on opposite sides of the shaft wall and matched with two vertical guide rails; A car, the car is slidably arranged between two vertical guide rails, and the top of the car is provided with an upper beam extending toward two opposite sides; Two clamping assemblies are arranged diagonally on opposite sides of the upper beam, and the clamping assemblies include two lever hydraulic cylinders arranged on the upper and lower sides of the upper beam.

2. An elevator or lift leveling locking device according to claim 1, It is characterized in that The upper and lower sides of the fixing seat are respectively provided with fixing brackets connected to the well wall.

3. An elevator or lifting machine leveling locking device according to claim 1, It is characterized in that The fixing assembly comprises two fixing seats on which reinforcement plates are arranged opposite to each other. When the fixing seats are locked, the locking block of the lever hydraulic cylinder is pressed onto the reinforcement plates.

4. An elevator or lifting machine leveling locking device according to claim 1, It is characterized in that There are two upper beams, and first mounting plates are respectively arranged on the upper and lower sides of the two opposite ends of the two upper beams, and the lever hydraulic cylinder is arranged on the first mounting plates.

5. An elevator or lifting machine leveling locking device according to claim 4, It is characterized in that The first mounting plate is provided with a groove, and the vertical guide rail passes through the groove.

6. An elevator or lifting machine leveling locking device according to claim 4, It is characterized in that A locking switch and a retracting switch are provided on the side of the first mounting plate, and a travel plate cooperating with the locking switch and the retracting switch is provided on the locking block of the lever hydraulic cylinder.

7. An elevator or lifting machine leveling locking device according to claim 6, It is characterized in that The travel plate is a 120° angle steel sheet.

8. An elevator or lifting machine leveling locking device according to claim 4, It is characterized in that A second mounting plate is arranged above the middle part of the two upper beams, and a hydraulic control system is arranged on the second mounting plate. The hydraulic control system is connected with four lever hydraulic cylinders.

9. An elevator or lifting machine leveling locking device according to claim 8, It is characterized in that The hydraulic control system includes an oil tank, an oil pump, a motor, a hydraulically controlled one-way valve, a double one-way throttle valve, a relief valve and four diverters. The motor is installed on the oil pump. The oil inlet of the oil pump is connected to a first pipeline extending into the oil tank. The oil outlet of the oil pump is connected to an oil inlet of the double one-way throttle valve through a second pipeline. The hydraulically controlled one-way valve is installed on the second pipeline. Four diverters are connected in series. An oil outlet of the double one-way throttle valve is connected to four diverters through a third pipeline, respectively. The four diverters are connected to the oil inlet of the lever hydraulic cylinder through a fourth pipeline, respectively. The oil outlets of the four lever hydraulic cylinders are connected to the other oil inlet of the double one-way throttle valve through a fifth pipeline, respectively. The other oil outlet of the double one-way throttle valve is connected to a sixth pipeline. A seventh pipeline is connected between the oil outlet of the oil pump and the fifth pipeline, and the relief valve is installed on the seventh pipeline.

10. An elevator or lifting machine leveling locking device according to claim 9, It is characterized in that A filter is installed on the first pipeline.

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