Lifting device

Abstract

The utility model discloses a lifting device which comprises a lift car and a driving mechanism, wherein the lift car can move in a plurality of hollow supporting bodies which are sequentially nested, and the driving mechanism is used for driving the lift car to move in the supporting bodies. The same ends of the supporting bodies are fixedly connected with elevator rails, the elevator rails and the supporting bodies are consistent in direction, the adjacent elevator rails are staggered, and when the lift car moves, the lift car is sequentially connected with the adjacent elevator rails in a sliding mode. Due to the fact that the elevator rails are in sliding fit, the total length of the connected elevator rails can be correspondingly adjusted according to the lifting height needed by the lift car, and the lift car can safely and smoothly run in the telescopic main arm.

Description

Technical Field

[0001] The utility model relates to the technical field of engineering machinery, in particular to a lifting device. Background Art

[0002] An elevator (or lift) is a commonly used lifting equipment used in high-rise buildings or some construction machinery. The elevator runs on a support body, such as an elevator shaft, a building exterior wall, or the main body of a construction machinery (such as a tower crane), and transports people or goods up and down by dragging a wire rope. When the elevator is running, since the elevator needs to move along the track on the support body, once the height or length of the support body is determined, the length of the track is also determined, and the maximum lifting height of the elevator is also determined.

[0003] At present, the main arm of the fire rescue vehicle is tilted and retracted when working. If the main arm is extended too long, the center of gravity of the main arm will deviate from the supporting position, the fire truck will be unstable when working, and there is a risk of overturning. Therefore, the height of fire rescue is limited, and the rescue point is also limited.

[0004] Therefore, a fire rescue vehicle with a vertical main arm and a horizontal folding arm on the top of the main arm has emerged. The rescue height of the fire rescue vehicle can be increased by the vertical main arm and the support around the main arm. However, this fire rescue vehicle needs to frequently change the fire rescue height through the telescopic main arm during operation. Since the height of the main arm is not fixed, the existing elevator cannot be used on the main arm of this fire rescue vehicle due to the fixed track length. Utility Model Content

[0005] The technical problem to be solved by the utility model is to provide a lifting device for solving the problem that the current lift cannot be used on a telescopic main arm due to the fixed track length.

[0006] In order to solve the above technical problems, the technical solution adopted by the utility model is:

[0007] A lifting device comprises a car that can move within a plurality of hollow supporting bodies nested in sequence and a driving mechanism for driving the car to move within the supporting bodies; an elevator track is fixedly connected to the same end of each supporting body, the elevator track is in the same direction as the supporting body, adjacent elevator tracks are staggered, and when the car moves, it is slidably connected with adjacent elevator tracks in sequence.

[0008] Furthermore, the support body is arranged vertically. When the support body is retracted, the elevator rails are all located inside the support body. The support body is nested from the outside to the inside. After the support body is extended, the height of the support body increases from the outside to the inside. The elevator rails are fixedly connected to the corresponding bottom of the support body respectively.

[0009] Furthermore, an exit track is provided on one side of the elevator track corresponding to the inner support body, and the exit track is slidably connected to the elevator track corresponding to the support body. The exit track is parallel to the elevator track, and a lifting unit for driving the exit track to rise and fall is provided on the support body.

[0010] Furthermore, the lifting unit is a lifting hydraulic cylinder for the exit rail, and the lifting hydraulic cylinder for the exit rail is consistent with the direction of the exit rail. The exit rail and the inner support body are respectively hinged to the corresponding end of the lifting hydraulic cylinder for the exit rail. After the lifting hydraulic cylinder lifts the exit rail; driven by the driving mechanism, the car rises and is higher than the inner support body, and the exit rail and the car slide in cooperation.

[0011] Furthermore, the driving mechanism includes an elevator hoist fixedly mounted on the car, an elevator steel wire rope having one end fixedly connected thereto is provided on the inner support body, and the other end of the elevator steel wire rope is wound around a drum of the elevator hoist.

[0012] Furthermore, adjacent elevator rails are slidably connected.

[0013] Furthermore, the car is provided with at least one elevator door, and the elevator door is a push-pull type.

[0014] Furthermore, an elevator stabilization mechanism is provided on the side of the car, and the elevator stabilization mechanism includes a fixed support rod fixedly connected to the side of the car, a second stabilization rod hinged to the fixed support rod at one end, a stabilization wheel rotatably connected to the other end of the second stabilization rod, and a gas spring arranged between the second stabilization rod and the fixed support rod, the stabilization wheel abuts against the inner side of the support body, and the two ends of the gas spring are respectively hinged to the second stabilization rod and the fixed support rod.

[0015] Furthermore, a fixed vertical rod is fixedly connected to the fixed support rod, the second stabilizing rod is hinged to the upper end of the fixed vertical rod, a first stabilizing rod is also provided between the second stabilizing rod and the fixed support rod, one end of the first stabilizing rod is hinged to the lower end of the fixed vertical rod, and the other end is hinged to the second stabilizing rod near the middle, one end of the gas spring is hinged to the middle of the first stabilizing rod, and the other end is hinged to the part of the second stabilizing rod close to the stabilizing wheel.

[0016] The positive effects of the utility model are:

[0017] 1. Elevator rails are arranged on each support of the main arm, and each elevator rail is slidably connected to each other. A car is arranged in the support, and an elevator slider is arranged on the car. An elevator winch is arranged under the car. The elevator winch drives the car up and down through the elevator wire rope. During the process of the car up and down, the elevator slider is slidably connected with each elevator slide rail in turn. Since each elevator rail is slidably matched, the total length of each elevator rail after connection can be adjusted accordingly according to the required lifting height of the car (i.e., the height after the main arm is extended), so that the car can run safely and smoothly in the retractable main arm.

[0018] 2. The elevator track corresponding to the inner support body is also slidably connected to the exit track, which is driven by the exit track lifting hydraulic cylinder set on the support body to achieve lifting and lowering. When the exit track lifting hydraulic cylinder is activated, the exit track is lifted upward, and when the elevator winch is running, the car is pulled upward out of the inner support body, so that the car is higher than the support body, that is, the car is higher than the horizontal folding arm connected to the top of the support body, so that it is convenient for people to transfer between the car and the folding arm.

[0019] 3. There is also an elevator stabilizing mechanism under the car, which stabilizes the car and prevents it from shaking when it moves up and down. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the appearance of the car after it is lifted out of the supporting body;

[0021] Figure 2 yes Figure 1 A partial enlarged view of the area where the middle car is located;

[0022] Figure 3 This is a partial enlarged view after the car is lowered to the lower part of the inner support body;

[0023] Figure 4 It is a structural diagram of the elevator stabilizing mechanism;

[0024] Figure 5 It is a partial schematic diagram of the car after the car is lifted out of the supporting body;

[0025] Figure 6 It is a side view of the car after it is lifted out of the supporting body;

[0026] In the figure:

[0027] 201, support body; 701, hydraulic cylinder for lifting the warehouse exit track; 702, warehouse exit track; 703, elevator track; 704, car; 705, elevator winch; 706, elevator door; 707, elevator slider; 708, guide pulley; 709, seat plate; 710, elevator wire rope; 711, track bracket; 712, elevator stabilizing mechanism; 7121, fixed support rod; 7122, fixed vertical rod; 7123, first stabilizing rod; 7124, stabilizing wheel; 7125, gas spring; 7126, second stabilizing rod. DETAILED DESCRIPTION

[0028] Example 1

[0029] like Figures 1 to 6 As shown, the main arm of the fire rescue vehicle is composed of eight hexagonal support bodies 201 nested in sequence from outside to inside. After the main arm is extended, the heights of the eight support bodies 201 increase in sequence from outside to inside.

[0030] A lifting device includes a car 704 that can move up and down in eight supporting bodies 201 and a driving mechanism for driving the car 704 to move in the supporting bodies 201. There is a gap between the car 704 and the inner supporting body 201. The lower end of each supporting body 201 is fixedly connected with a door-shaped track bracket 711, and the inner side of each track bracket 711 is fixedly connected with a vertical elevator track 703, and the adjacent elevator tracks 703 are staggered and connected in a sliding manner. The outer side of the car 704 is fixedly connected with an elevator slider 707. After the main arm is extended, when the car 704 moves up and down, the elevator slider 707 slides with each elevator track 703 in turn, and the distance between the eight elevator tracks 703 and the elevator slider 707 is equal. When the supporting body 201 is retracted downward, the elevator tracks 703 are all located inside the inner supporting body 201.

[0031] In order to make the car 704 bear force evenly, the track bracket 711 and the elevator track 703 on each support body 201 are symmetrically arranged on both sides of the car 704, and there are two elevator sliders 707 on each side of the car 704 arranged up and down. The elevator track 703 on the inner support body 201 is fixedly connected to the support body 201 at both ends.

[0032] A circular seat plate 709 is provided below the car 704 and is fixedly connected to the car 704 via a column. The driving mechanism includes two motor-driven elevator winches 705 fixedly connected to the top of the seat plate 709. An elevator steel rope 710 is wound around the drum of each elevator winch 705. The ends of the two elevator steel ropes 710 are respectively connected to the top of the inner support body 201. The two elevator steel ropes 710 are located between the car 704 and the inner support body 201. A guide pulley 708 is also provided on the seat plate 709, and the elevator steel rope 710 passes around the guide pulley 708.

[0033] Elevator doors 706 are provided on both sides of the car 704 . The elevator doors 706 are of a rotating push-pull type and can rotate around the center of the car 704 .

[0034] The working process of the utility model is:

[0035] After the supporting bodies 201 of each layer of the main arm are extended, the elevator hoist 705 is operated, and the elevator wire rope 710 is retracted, thereby driving the car 704 to rise. The elevator slider 707 is slidably connected with each elevator track 703 in turn to guide the car 704.

[0036] Since the elevator rails 703 are slidably matched, the total length of the elevator rails 703 after being connected can be adjusted accordingly according to the lifting height of the car 704, so that the car 704 can run safely and smoothly in the retractable main arm.

[0037] Example 2

[0038] The difference between this embodiment and embodiment 1 is that:

[0039] One side of the two elevator rails 703 corresponding to the inner support body 201 is provided with an exit rail 702, and the exit rail 702 is slidably connected with the elevator rail 703 corresponding to the support body 201, and the exit rail 702 is parallel to the elevator rail 703, and the support body 201 is provided with a jacking unit for driving the exit rail 702 to rise and fall. The jacking unit is an exit rail jacking hydraulic cylinder 701, and the exit rail jacking hydraulic cylinder 701 is vertically arranged, and the exit rail 702 and the inner support body 201 are respectively hinged to one end corresponding to the exit rail jacking hydraulic cylinder 701, and two elevator steel ropes 710 are respectively fixedly connected to the top of the corresponding exit rail 702.

[0040] In actual application, the top of the inner support body 201 is rotatably connected with a horizontal folding arm. When the warehouse exit rail lifting hydraulic cylinder 701 is actuated, the two warehouse exit rails 702 are lifted upward, and when the elevator winch 705 is running, the car 704 is pulled out of the inner support body 201, so that the car 704 is higher than the support body 201, that is, the car 704 is higher than the folding arm, thereby facilitating the transfer of personnel between the car 704 and the folding arm.

[0041] Example 3

[0042] The difference between this embodiment and embodiment 2 is that:

[0043] The seat plate 709 is provided with elevator stabilizing mechanisms 712 on two symmetrical sides. The elevator stabilizing mechanisms 712 and the elevator slider 707 are arranged at 90 degrees with the car 704 as the center. Each elevator stabilizing mechanism 712 includes two upper and lower fixed support rods 7121 fixedly connected to the side of the car 704, a vertical fixed vertical rod 7122 fixedly arranged on the two fixed support rods 7121, a second stabilizing rod 7126 hinged at one end to the top of the fixed vertical rod 7122, a stabilizing wheel 7124 rotatably connected to the other end of the second stabilizing rod 7126, a first stabilizing rod 7123 hinged at one end to the lower end of the fixed vertical rod 7122, and a gas spring 7125. The other end of the first stabilizing rod is hinged to the second stabilizing rod 7126 near the middle, and one end of the gas spring 7125 is hinged to the first stabilizing rod 7123 near the middle, and the other end is hinged to the second stabilizing rod 7126 near the stabilizing wheel 7124.

[0044] Under the elastic action of the gas spring 7125, the stabilizing wheel 7124 always rests against the inner side of the support body 201 of different specifications and sizes, thereby stabilizing the car 704 and preventing the car 704 from shaking when it moves up and down.

[0045] The above-mentioned embodiments describe content in a relatively detailed and specific manner, and express the preferred embodiments of the present utility model. They are only used to illustrate the technical ideas and features of the present utility model, and their purpose is to enable technicians in this field to understand the content of the present utility model and implement it accordingly, but they are not limited to the present utility model. The patent scope of the present utility model cannot be limited only by this embodiment, that is, any equivalent changes or modifications made to the spirit disclosed by the present utility model, for researchers or technicians in this field, without departing from the structure of the present utility model, local improvements within the system and changes and conversions between subsystems, etc., are still within the patent scope of the present utility model.

Claims

1. A lifting device, characterized in that: The invention comprises a car (704) movable in a plurality of hollow supporting bodies (201) nested in sequence, and a driving mechanism for driving the car (704) to move in the supporting bodies (201); an elevator track (703) is fixedly connected to the same end of each supporting body (201); the elevator track (703) is in the same direction as the supporting body (201); adjacent elevator tracks (703) are staggered; when the car (704) moves, it is slidably connected to adjacent elevator tracks (703) in sequence.

2. A lifting device according to claim 1, characterized in that: The support body (201) is arranged vertically. When the support body (201) is retracted, the elevator rails (703) are all located inside the support body (201) close to the inside. The support body (201) is nested from the outside to the inside. After the support body (201) is extended, the height of the support body (201) increases from the outside to the inside. The elevator rails (703) are respectively fixedly connected to the bottom of the corresponding support body (201).

3. A lifting device according to claim 2, characterized in that: A warehouse exit track (702) is provided on one side of the elevator track (703) corresponding to the inner support body (201), and the warehouse exit track (702) is slidably connected to the elevator track (703) corresponding to the support body (201). The warehouse exit track (702) is parallel to the elevator track (703), and a lifting unit for driving the warehouse exit track (702) to rise and fall is provided on the support body (201).

4. A lifting device according to claim 3, characterized in that: The lifting unit is a warehouse exit track lifting hydraulic cylinder (701), the warehouse exit track lifting hydraulic cylinder (701) is in the same direction as the warehouse exit track (702), the warehouse exit track (702) and the inner support body (201) are respectively hinged to the corresponding end of the warehouse exit track lifting hydraulic cylinder (701), after the warehouse exit track lifting hydraulic cylinder (701) lifts the warehouse exit track (702); driven by the driving mechanism, the car (704) rises and is higher than the inner support body (201), and the warehouse exit track (702) and the car (704) are slidably matched.

5. A lifting device according to claim 1, characterized in that: The driving mechanism comprises an elevator hoist (705) fixedly arranged on the car (704), an elevator steel wire rope (710) having one end fixedly connected to the elevator car (704) is arranged on the inner support body (201), and the other end of the elevator steel wire rope (710) is wound on a drum of the elevator hoist (705).

6. A lifting device according to claim 1, characterized in that: Adjacent elevator rails (703) are slidably connected.

7. A lifting device according to claim 1, characterized in that: The elevator car (704) is provided with at least one elevator door (706), and the elevator door (706) is a push-pull type.

8. A lifting device according to claim 1, characterized in that: An elevator stabilizing mechanism (712) is provided on the side of the car (704), and the elevator stabilizing mechanism (712) includes a fixed support rod (7121) fixedly connected to the side of the car (704), a second stabilizing rod (7126) hinged at one end to the fixed support rod (7121), a stabilizing wheel (7124) rotatably connected to the other end of the second stabilizing rod (7126), and a gas spring (7125) arranged between the second stabilizing rod (7126) and the fixed support rod (7121), wherein the stabilizing wheel (7124) abuts against the inner side of the support body (201), and the two ends of the gas spring (7125) are respectively hinged to the second stabilizing rod (7126) and the fixed support rod (7121).

9. A lifting device according to claim 8, characterized in that: The fixed support rod (7121) is fixedly connected to a fixed vertical rod (7122); the second stabilizing rod (7126) is hinged to the upper end of the fixed vertical rod (7122); a first stabilizing rod (7123) is further provided between the second stabilizing rod (7126) and the fixed support rod (7121); one end of the first stabilizing rod (7123) is hinged to the lower end of the fixed vertical rod (7122), and the other end is hinged to the second stabilizing rod (7126) near the middle; one end of the gas spring (7125) is hinged to the middle of the first stabilizing rod (7123), and the other end is hinged to the second stabilizing rod (7126) near the stabilizing wheel (7124).

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