Freight elevator locking safety device

Abstract

The utility model provides a freight elevator locking safety device, which relates to the technical field of elevator protection, and is characterized in that the freight elevator locking safety device comprises support limiting structures and a hydraulic limiting structure, the support limiting structures are positioned on two sides of a car, and each support limiting structure comprises a support connecting rod and a connecting rod limiting seat; a supporting spring rod is arranged above the mounting base A, a connecting block is arranged at one end of the supporting spring rod and movably connected with a supporting connecting rod, the connecting rod limiting base is located at the upper end of the lift car, and the supporting limiting structure is used for limiting movement of the lift car. A mounting seat B is fixed to the lower end of the hydraulic cylinder and fixedly connected with the elevator shaft, a hydraulic push rod is movably connected to the side, close to the elevator car, of the hydraulic cylinder, and the hydraulic rod limiting seat is located below the connecting rod limiting seat and used for being matched with the hydraulic push rod to limit movement of the elevator car. The elevator car fixing device has the advantages that the elevator car can be fully and stably fixed, and deflection and falling of the elevator car during cargo loading and unloading are avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of elevator protection, in particular to a locking safety device for a freight elevator. Background Art

[0002] In shopping malls or factories, goods often need to be transported at different heights, so corresponding freight elevators are needed to meet the needs of larger volume and heavier weight goods. However, in order to meet the needs of large-capacity and heavy-load cargo transportation, the existing freight elevators often lack complete safety insurance structures. Therefore, freight elevators are more likely to change their center of gravity when loading and unloading heavy objects, resulting in the elevator tilting, the car falling, etc., which brings great safety hazards to the overall loading and transportation. Utility Model Content

[0003] The purpose of the utility model is to provide a locking safety device for a freight elevator, which solves the technical problem in the prior art that the freight elevator has poor stability during loading and unloading, which easily causes the car to fall, and achieves stable control during loading and unloading of the freight elevator, thereby preventing the car from falling.

[0004] In order to achieve the above-mentioned utility model purpose, the technical solution adopted by the utility model is:

[0005] A freight elevator locking safety device includes a support and limiting structure and a hydraulic limiting structure. The support and limiting structures are located on both sides of the car and are slotted inside the elevator shaft. The support and limiting structure includes a support link and a link limiting seat. The side of the support link away from the car is rotatably connected to the mounting seat A through a fixed shaft. The mounting seat A is fixedly connected to the elevator shaft. A support spring rod is provided above the mounting seat A. One end of the support spring rod is fixedly connected to the elevator shaft, and the other end is provided with a connecting block and movably connected to the support link. The link limiting seat is located at the upper end of the car and is close to the elevator. On both sides of the shaft, the connecting rod limit seat has a groove near the support connecting rod. The support limiting structure is used to limit the movement of the car. The hydraulic limiting structure includes a hydraulic cylinder and a hydraulic rod limiting seat. The hydraulic cylinder is located below the support connecting rod. The lower end of the hydraulic cylinder is fixed with a mounting seat B and is fixedly connected to the elevator shaft. The hydraulic cylinder is movably connected to a hydraulic push rod on the side close to the car. The hydraulic rod limiting seat is located below the connecting rod limiting seat. The hydraulic rod limiting seat has a cylindrical limiting hole on the side facing the hydraulic push rod. The limiting hole is used to cooperate with the hydraulic push rod to limit the movement of the car.

[0006] As an improvement, there are four support and limit structures, which are symmetrically arranged in groups of two with the car as the center. The support links are tilted 60°, and the side of the support links away from the support spring rod is provided with a rubber pad. The rubber pad is used to increase the friction between the support links and the link limit seat, while reducing the impact of mutual collision.

[0007] As an improvement, the support and limiting structure also includes an electric push rod, which is located between the mounting seat A and the mounting seat B. The electric push rod is arranged vertically to the support link, and one end of the electric push rod is provided with a fixing block fixedly connected to the elevator shaft. A shock-absorbing spring rod is provided on the side of the electric push rod close to the support link, and one end of the shock-absorbing spring rod is provided with a connecting block fixedly connected to the support link. One end of the shock-absorbing spring rod is provided with a mounting block rotatably connected to the push rod part of the electric push rod, and the electric push rod is used to adjust the fixing force and angle of the support link and the link limit seat.

[0008] As an improvement, the hydraulic push rod has a protrusion on the side away from the hydraulic cylinder. The protrusions are distributed in four groups with equal intervals around the axis of the hydraulic push rod. The protrusions are used to strengthen the strength of the hydraulic push rod and at the same time improve the connection strength between the hydraulic push rod and the hydraulic rod limit seat.

[0009] As an improvement, the hydraulic cylinder is away from one end of the supporting connecting rod, and a balancing limit structure is provided below the mounting seat B, the balancing limit structure includes a magnetic limit seat and a support plate, the magnetic limit seat is located on both sides of the car, and below the hydraulic rod limit seat, the support plate is located on the side of the magnetic limit seat away from the car, the support plate is provided with a shock absorber seat on the side away from the magnetic limit seat, and a movable mounting seat is fixed on the side of the shock absorber seat away from the support plate, the internal rotation of the movable mounting seat is connected with a lead screw, and guide slide rods are provided on the upper and lower sides of the lead screw, and a rotating connecting seat is provided on the side of the lead screw away from the movable mounting seat, the rotating connecting seat is slidably sleeved with the guide slide rod, the rotating connecting seat is fixedly connected to the elevator shaft, the upper end of the rotating connecting seat is fixed with a motor, and one side of the motor is provided with a sprocket transmission structure connected to the lead screw transmission, and the balancing limit mechanism is used to balance the position angle of the lower end of the car.

[0010] As an improvement, the upper and lower ends of the support plate are provided with guard plates inclined at 45°, and the middle position of the support plate is provided with a groove. An adsorption sensor is fixed on the inner side of the groove. The adsorption sensor is used to sense the position of the magnetic limit seat and to determine the relative position of the car.

[0011] The beneficial effects of the present invention are as follows: by arranging structures such as support spring rods and support connecting rods, the car can be grasped and fixed and its up and down movement can be restricted to determine its position; by arranging a hydraulic rod limit seat, the position of the car can be further restricted while providing certain support to prevent the car from sinking; by arranging structures such as support plates and movable mounting seats, the car can be assisted in adjusting its balance position to prevent the car from tilting and affecting cargo loading and unloading. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1This is a structural diagram of the installation and use status of a freight elevator locking safety device of the utility model;

[0013] Figure 2 for Figure 1 Part A is an enlarged structural diagram;

[0014] Figure 3 for Figure 1 Part B is a schematic diagram of the enlarged structure.

[0015] In the figure: 1. Car; 2. Elevator shaft; 3. Support spring rod; 4. Mounting seat A; 5. Support connecting rod; 6. Shock-absorbing spring rod; 7. Electric push rod; 8. Connecting rod limit seat; 9. Hydraulic rod limit seat; 10. Hydraulic push rod; 11. Hydraulic cylinder; 12. Mounting seat B; 13. Magnetic limit seat; 14. Support plate; 15. Adsorption sensor; 16. Shock-absorbing seat; 17. Movable mounting seat; 18. Motor; 19. Screw. DETAILED DESCRIPTION

[0016] To facilitate a clear understanding of the present invention, the following will provide a clear and complete description of the technical solutions in the embodiments of the present invention, in conjunction with the accompanying drawings. Identical components are denoted by the same reference numerals. It should be noted that the terms "front," "rear," "left," "right," "up," and "down" used in the following description refer to directions in the accompanying drawings, and the terms "inward" and "outward" refer to directions toward or away from the geometric center of a particular component, respectively.

[0017] like Figures 1 to 3As shown, a locking safety device for a freight elevator includes a support and limiting structure and a hydraulic limiting structure. The support and limiting structures are located on both sides of the car 1 and are slotted on the inner side of the elevator shaft 2. The support and limiting structure includes a support link 5 and a link limiting seat 8. The side of the support link 5 away from the car 1 is rotatably connected to the mounting seat A4 through a fixed shaft. The mounting seat A4 is fixedly connected to the elevator shaft 2. A support spring rod 3 is provided above the mounting seat A4. One end of the support spring rod 3 is fixedly connected to the elevator shaft 2, and the other end is provided with a connecting block movably connected to the support link 5. The link limiting seat 8 is located at the upper end of the car 1 and is on both sides close to the elevator shaft 2. On the side, the connecting rod limit seat 8 has a groove near the support connecting rod 5. The support limiting structure is used to limit the movement of the car 1. The hydraulic limiting structure includes a hydraulic cylinder 11 and a hydraulic rod limit seat 9. The hydraulic cylinder 11 is located below the support connecting rod 5. The lower end of the hydraulic cylinder 11 is fixed with a mounting seat B12 and is fixedly connected to the elevator shaft 2. The hydraulic cylinder 11 is movably connected to a hydraulic push rod 10 on the side close to the car 1. The hydraulic rod limit seat 9 is located below the connecting rod limit seat 8. The hydraulic rod limit seat 9 has a cylindrical limiting hole on the side facing the hydraulic push rod 10. The limiting hole is used to cooperate with the hydraulic push rod 10 to limit the movement of the car 1. The support connecting rod 5 is made of metal. The outer side of the connecting rod limit seat 8 has an arc chamfer. The arc chamfer is used to deflect and affect the position of the support connecting rod 5, so that the car 1 can deflect the support connecting rod 5 and move upward when the car 1 moves upward.

[0018] There are four support and limiting structures, which are symmetrically arranged in groups of two with the car 1 as the center. The support link 5 is tilted at 60 degrees. The side of the support link 5 away from the support spring rod 3 is provided with a rubber pad. The rubber pad is used to increase the friction between the support link 5 and the link limit seat 8, while reducing the impact of mutual collision. The support and limiting structure also includes an electric push rod 7, which is located between the mounting seat A4 and the mounting seat B12. The electric push rod 7 is perpendicular to the support link 5. One end of the electric push rod 7 has a fixed block fixedly connected to the elevator shaft 2. The side of the electric push rod 7 close to the support link 5 is provided with a shock-absorbing spring rod 6. One end of the shock-absorbing spring rod 6 has a connecting block fixedly connected to the support link 5. One end of the shock-absorbing spring rod 6 has a mounting block rotatably connected to the push rod part of the electric push rod 7. The electric push rod 7 is used to adjust the fixing force and angle between the support link 5 and the link limit seat 8. The hydraulic push rod 10 has a protrusion on the side away from the hydraulic cylinder 11. The protrusions are distributed in four groups with equal intervals around the axis of the hydraulic push rod 10. The protrusions are used to strengthen the strength of the hydraulic push rod 10 and improve the connection strength between the hydraulic push rod 10 and the hydraulic rod limit seat 9. The hydraulic cylinder 11 can be equipped with a control sensor. The control sensor is used to receive control signals from the car 1 to facilitate supporting and fixing the position of the car 1 and improve the stability of cargo during loading and unloading. The electric push rod 7 can also be equipped with a control sensor to facilitate pushing the supporting connecting rod 5 toward the connecting rod limit seat 8.

[0019] The hydraulic cylinder 11 is away from one end of the supporting connecting rod 5, and a balance limit structure is provided below the mounting seat B12. The balance limit structure includes a magnetic limit seat 13 and a support plate 14. The magnetic limit seat 13 is located on both sides of the car 1 and below the hydraulic rod limit seat 9. The support plate 14 is located on the side of the magnetic limit seat 13 away from the car 1. The side of the support plate 14 away from the magnetic limit seat 13 is provided with a shock absorber seat 16, and the side of the shock absorber seat 16 away from the support plate 14 is fixed with a movable mounting seat. 17. The movable mounting seat 17 is internally rotatably connected with a lead screw 19. Guide rods are provided on the upper and lower sides of the lead screw 19. The lead screw 19 is provided with a rotating connection seat on the side away from the movable mounting seat 17. The rotating connection seat is slidably sleeved with the guide rod. The rotating connection seat is fixedly connected to the elevator shaft 2. A motor 18 is fixed to the upper end of the rotating connection seat. One side of the motor 18 is provided with a sprocket transmission structure that is transmission-connected to the lead screw 19. The balancing limit mechanism is used to balance the position angle of the lower end of the car 1. The upper and lower ends of the support plate 14 are provided with guard plates inclined at 45°. The middle position of the support plate 14 is provided with a groove. An adsorption sensor 15 is fixed on the inner side of the groove. The adsorption sensor 15 is used to sense the position of the magnetic limit seat 13 and to determine the relative position of the car 1. The adsorption sensor 15 can sense the corresponding moving position of the magnetic limit seat 13, and in combination with the control sensor of the hydraulic cylinder 11, activate the motor 18 and the hydraulic cylinder together to stably fix the car 1.

[0020] When in use, after the freight elevator rises to the corresponding position, the connecting rod limit seat 8 will fit with the supporting connecting rod 5. At this time, the electric push rod 7 will push the shock-absorbing spring rod 6 to further combine and fix the supporting connecting rod 5 with the connecting rod limit seat 8. At the same time, after the controller of the hydraulic cylinder 11 recognizes the corresponding car 1 position signal, it will start and push the hydraulic push rod 10 toward the hydraulic rod limit seat 9. When the hydraulic push rod 10 is fully extended into the hydraulic rod limit seat 9, the entire car 1 is fixed. At this time, after the motor 18 recognizes the movement of the hydraulic cylinder 11, it will drive the screw 19 to rotate in the forward direction, and the movable mounting seat 17 will push the support plate 14 to the position of the magnetic limit seat 13 of the car 1. When the adsorption sensor 15 senses the corresponding magnetic limit seat 13, the motor 18 stops running. At this time, the support plate 14 will limit the offset of the lower end of the car 1, thereby achieving further stability of the car 1; when the car 1 completes cargo loading and unloading, the operator can start the operation through the control panels inside and outside the car 1. When it senses that the door is completely closed, the controller will start the electric Tiguan 7, hydraulic cylinder 11 and motor 18, and reset each moving structure, thereby freeing up the corresponding moving space for the car 1.

[0021] The above description is only a preferred embodiment of the present utility model patent and is not intended to limit the present utility model patent. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model patent shall be included in the scope of protection of the present utility model patent.

Claims

1. A freight elevator locking safety device, characterized in that: The invention comprises a support and limiting structure and a hydraulic limiting structure, wherein the support and limiting structure is located on both sides of the car (1) and is located at a slotted position inside the elevator shaft (2), wherein the support and limiting structure comprises a support connecting rod (5) and a connecting rod limiting seat (8), wherein the side of the support connecting rod (5) away from the car (1) is rotatably connected to the mounting seat A (4) through a fixed shaft, wherein the mounting seat A (4) is fixedly connected to the elevator shaft (2), and a support spring rod (3) is provided above the mounting seat A (4), wherein one end of the support spring rod (3) is fixedly connected to the elevator shaft (2), and the other end is provided with a connecting block movably connected to the support connecting rod (5), wherein the connecting rod limiting seat (8) is located at the upper end of the car (1) and is located on both sides close to the elevator shaft (2), wherein the connecting rod limiting seat ( 8) A groove is provided at a position close to the supporting connecting rod (5), the supporting limiting structure is used to limit the movement of the car (1), the hydraulic limiting structure includes a hydraulic cylinder (11) and a hydraulic rod limiting seat (9), the hydraulic cylinder (11) is located below the supporting connecting rod (5), the lower end of the hydraulic cylinder (11) is fixed with a mounting seat B (12) fixedly connected to the elevator shaft (2), the hydraulic cylinder (11) is movably connected to a hydraulic push rod (10) on the side close to the car (1), the hydraulic rod limiting seat (9) is located below the connecting rod limiting seat (8), the hydraulic rod limiting seat (9) has a cylindrical limiting hole on the side facing the hydraulic push rod (10), and the limiting hole is used to cooperate with the hydraulic push rod (10) to limit the movement of the car (1).

2. A freight elevator locking safety device according to claim 1, characterized in that: There are four support and limit structures in total, which are symmetrically arranged in groups of two with the car (1) as the center. The support connecting rods (5) are arranged at an inclination of 60 degrees. The side of the support connecting rods (5) away from the support spring rod (3) is provided with a rubber pad, and the rubber pad is used to increase the friction between the support connecting rods (5) and the connecting rod limit seat (8) and reduce the impact of mutual collision.

3. A freight elevator locking safety device according to claim 2, characterized in that: The support and limiting structure also includes an electric push rod (7), which is located between the mounting seat A (4) and the mounting seat B (12). The electric push rod (7) is vertically arranged with the support connecting rod (5), one end of the electric push rod (7) is provided with a fixing block fixedly connected to the elevator shaft (2), and a shock-absorbing spring rod (6) is provided on the side of the electric push rod (7) close to the support connecting rod (5). One end of the shock-absorbing spring rod (6) is provided with a connecting block fixedly connected to the support connecting rod (5), and one end of the shock-absorbing spring rod (6) is provided with a mounting block rotatably connected to the push rod part of the electric push rod (7). The electric push rod (7) is used to adjust the fixing force and angle of the support connecting rod (5) and the connecting rod limiting seat (8).

4. A freight elevator locking safety device according to claim 1, characterized in that: The hydraulic push rod (10) has a protrusion on one side away from the hydraulic cylinder (11). The protrusions are distributed in four groups at equal intervals with the axis of the hydraulic push rod (10) as the center of the circle. The protrusions are used to strengthen the strength of the hydraulic push rod (10) and improve the connection strength between the hydraulic push rod (10) and the hydraulic rod limit seat (9).

5. A freight elevator locking safety device according to claim 1, characterized in that: The hydraulic cylinder (11) is away from one end of the supporting connecting rod (5), and a balance limit structure is provided below the mounting seat B (12), the balance limit structure comprising a magnetic limit seat (13) and a support plate (14), the magnetic limit seat (13) being located on both sides of the car (1) and below the hydraulic rod limit seat (9), the support plate (14) being located on the side of the magnetic limit seat (13) away from the car (1), the support plate (14) being provided with a shock absorber seat (16) on the side away from the magnetic limit seat (13), and the shock absorber seat (16) being fixed on the side away from the support plate (14) A movable mounting seat (17) is provided, wherein the movable mounting seat (17) is internally rotatably connected to a lead screw (19), guide slide rods are provided on the upper and lower sides of the lead screw (19), and a rotating connecting seat is provided on the side of the lead screw (19) away from the movable mounting seat (17), wherein the rotating connecting seat is slidably sleeved with the guide slide rod, and the rotating connecting seat is fixedly connected to the elevator shaft (2), and a motor (18) is fixed on the upper end of the rotating connecting seat, wherein one side of the motor (18) is provided with a sprocket transmission structure which is transmission-connected to the lead screw (19), and the balancing limit mechanism is used to balance the position angle of the lower end of the car (1).

6. A freight elevator locking safety device according to claim 5, characterized in that: The upper and lower ends of the support plate (14) are provided with guard plates inclined at 45 degrees, the middle position of the support plate (14) is provided with a groove, the inner side of the groove is fixed with an adsorption sensor (15), and the adsorption sensor (15) is used to sense the position of the magnetic limit seat (13) and to determine the relative position of the car (1).

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