CN212954118U

CN212954118U - Mobile loading and unloading platform capable of lifting at uniform speed

Info

Publication number: CN212954118U
Application number: CN202021205679.5U
Authority: CN
Inventors: 黄金波; 丁冬华
Original assignee: Foshan Weilin Qinli Machinery Co ltd
Current assignee: Foshan Weilin Qinli Machinery Co ltd
Priority date: 2020-06-24
Filing date: 2020-06-24
Publication date: 2021-04-13
Anticipated expiration: 2030-06-24

Abstract

The utility model discloses a removal loading platform that goes up and down at uniform velocity relates to the loading platform field, the on-line screen storage device comprises a base, the equal fixedly connected with supporting seat in the upper surface middle part both sides of base, the upper surface one end fixedly connected with frame of base, frame and supporting seat fixed connection, the top fixedly connected with electrical system of frame, the upper surface one end fixedly connected with hydraulic system of base, hydraulic system's output fixedly connected with hydraulic rod, hydraulic rod is located the outside of supporting seat. The utility model discloses a decline governing valve department at hydraulic system is provided with the decline choke valve, and the decline choke valve adopts elasticity automatically regulated, and when system pressure is great, the spring is compressed, and the oil return latus rectum diminishes, otherwise, and the oil return latus rectum grow can keep oil return speed stable like this to keep the goods at the uniform velocity decline.

Description

Mobile loading and unloading platform capable of lifting at uniform speed

Technical Field

The utility model relates to a loading platform field, in particular to at uniform velocity lift remove loading platform.

Background

In the actual use process of the traditional oil cylinder driven lifting loading and unloading platform, as a hydraulic system descends by the self weight of goods, the descending speeds of the weight of the goods are different, particularly when the weight of the goods is larger, the descending speed must be reduced, so that when the goods are lighter or no-load, the descending speed is very slow, the loading and unloading efficiency of the platform is reduced, and the requirements of customers cannot be met. Therefore, it is necessary to provide a moving platform that can be lifted and lowered at a constant speed to solve the above problems.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a removal loading platform that goes up and down at the uniform velocity to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: a movable loading and unloading platform capable of lifting at a constant speed comprises a base, wherein supporting seats are fixedly connected to two sides of the middle portion of the upper surface of the base, one end of the upper surface of the base is fixedly connected with a rack, the rack is fixedly connected with the supporting seats, an electric control system is fixedly connected to the top of the rack, one end of the upper surface of the base is fixedly connected with a hydraulic system, an output end of the hydraulic system is fixedly connected with a hydraulic push rod, the hydraulic push rod is positioned on the outer side of the supporting seats, a chain wheel is movably connected to the top end of the hydraulic push rod through a pin shaft, a pallet plate is arranged between the two supporting seats, lifting rollers are fixedly connected to the middle portions of two ends of the pallet plate, one ends of the lifting rollers, far away from the pallet plate, penetrate through the supporting seats and extend to the outer, the other end of the lifting chain is fixedly connected with the base.

Preferably, the two sides of the upper surface of the goods shelf plate are fixedly connected with supports, and the supports are arranged to be triangular structures.

Preferably, the hydraulic system comprises an oil cylinder, the output end of the oil cylinder is connected with a gear pump, and the driving end of the gear pump is connected with a motor.

Preferably, the connecting end of the gear pump is connected with an overflow valve, and the overflow valve and the gear pump form closed-loop communication through an oil tank.

Preferably, the output end of the oil cylinder is further connected with an electromagnetic valve, the output end of the electromagnetic valve is connected with a descending speed regulating valve, the output end of the descending speed regulating valve is connected with a descending throttle valve, and the descending throttle valve is communicated with the oil tank.

The utility model discloses a technological effect and advantage:

the utility model discloses a decline governing valve department at hydraulic system is provided with the decline choke valve, and the decline choke valve adopts elasticity automatically regulated, and when system pressure is great, the spring is compressed, and the oil return latus rectum diminishes, otherwise, and the oil return latus rectum grow can keep oil return speed stable like this to keep the goods at the uniform velocity decline.

Drawings

Fig. 1 is a schematic side view of the overall structure of the present invention.

Fig. 2 is a schematic sectional view of the overall structure of the present invention.

Fig. 3 is a schematic diagram of the structural connection of the hydraulic system of the present invention.

In the figure: 1. a base; 2. a supporting seat; 3. a frame; 4. an electronic control system; 5. a hydraulic system; 6. a hydraulic push rod; 7. a sprocket; 8. a shelf board; 9. lifting the roller; 10. lifting chains; 11. a support; 12. an oil cylinder; 13. a gear pump; 14. an electric motor; 15. an overflow valve; 16. an electromagnetic valve; 17. a descent speed regulation valve; 18. the throttle valve is lowered.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

The utility model provides a moving loading platform capable of lifting at a constant speed as shown in figures 1-3, as shown in figures 1 and 2, the loading platform comprises a base 1, universal wheels are fixedly connected at four corners of the lower surface of the base 1, so that the loading platform can move, supporting seats 2 are fixedly connected at two sides of the middle part of the upper surface of the base 1, a frame 3 is fixedly connected at one end of the upper surface of the base 1, the frame 3 is fixedly connected with the supporting seats 2, an electric control system 4 is fixedly connected at the top of the frame 3, a hydraulic system 5 is fixedly connected at one end of the upper surface of the base 1, a hydraulic push rod 6 is fixedly connected at the output end of the hydraulic system 5, the hydraulic push rod 6 is positioned at the outer side of the supporting seats 2, a chain wheel 7 is movably connected at the top end of the hydraulic push rod 6 through a pin shaft, the, equal fixedly connected with support 11 in shelf plate 8's upper surface both sides, support 11 sets up to the triangle-shaped structure, support 11's setting has improved shelf plate 8's intensity, the effect of protection has also been played simultaneously, avoid the goods to drop, the equal fixedly connected with in the middle part of the both ends of shelf plate 8 plays to rise gyro wheel 9, the one end that plays to rise gyro wheel 9 and keep away from shelf plate 8 runs through supporting seat 2 and extends to the outside of supporting seat 2, play to rise chain 10 has been cup jointed in the outside of sprocket 7, the one end that plays to rise chain 10 with play to rise gyro wheel 9 fixed connection, the other end and the base 1 fixed connection that play to rise chain 10, sprocket 7 drives shelf plate 8 through playing to rise chain.

As shown in fig. 3, the hydraulic system 5 includes an oil cylinder 12, an output end of the oil cylinder 12 is connected with a gear pump 13, a driving end of the gear pump 13 is connected with a motor 14, the motor 14 drives the gear pump 13 to rotate, a connecting end of the gear pump 13 is connected with an overflow valve 15, the overflow valve 15 and the gear pump 13 form closed loop communication through an oil tank, the overflow valve 15 plays a role of preventing overflow, an output end of the oil cylinder 12 is further connected with an electromagnetic valve 16, an output end of the electromagnetic valve 16 is connected with a descending speed regulating valve 17, an output end of the descending speed regulating valve 17 is connected with a descending throttle valve 18, the descending throttle valve, when the system pressure is larger, the spring is compressed, the oil return drift diameter is reduced, otherwise, the oil return drift diameter is enlarged, therefore, the oil return speed can be kept stable, so that the goods are kept to descend at a constant speed, and the loading and unloading efficiency of the platform is improved.

The utility model discloses the theory of operation:

when the device works, when goods are lifted, the motor 14 drives the gear pump 13 to work, high-pressure hydraulic oil enters the oil cylinder 12, and the piston rod extends out to realize the lifting of the goods; when the pump station stops working, the hydraulic oil in the oil cylinder 12 can directly return to the oil tank through the electromagnetic valve 16 to form a low-pressure loop, the piston rod loses the support of the high-pressure oil, and the goods retract under the action of gravity, so that the goods descend; in the whole low-pressure loop, the speed of hydraulic oil backflow is determined by the weight of cargos and the minimum drift diameter of a loop pipe, the adjustment of the descending speed regulating valve 17 on the drift diameter of the loop is a fixed value, so that the cargos have different weights, the system pressure is different, the oil return speed is different, the descending throttle valve 18 adopts elastic automatic adjustment, when the system pressure is higher, the spring is compressed, the drift diameter of the oil return is reduced, otherwise, the drift diameter of the oil return is increased, the oil return speed can be kept stable, the cargos are kept to descend at a constant speed, and the platform loading and unloading efficiency is improved.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications and variations can be made in the embodiments or in part of the technical features of the embodiments without departing from the spirit and the scope of the invention.

Claims

1. The utility model provides a removal loading platform that goes up and down at uniform velocity, includes base (1), its characterized in that: the supporting seat (2) is fixedly connected to two sides of the middle of the upper surface of the base (1), one end of the upper surface of the base (1) is fixedly connected with the frame (3), the frame (3) is fixedly connected with the supporting seat (2), the electric control system (4) is fixedly connected to the top of the frame (3), one end of the upper surface of the base (1) is fixedly connected with the hydraulic system (5), the output end of the hydraulic system (5) is fixedly connected with the hydraulic push rod (6), the hydraulic push rod (6) is positioned on the outer side of the supporting seat (2), the top end of the hydraulic push rod (6) is movably connected with the chain wheel (7) through the pin shaft, a goods shelf plate (8) is arranged between the two supporting seats (2), the lifting rollers (9) are fixedly connected to the middle of two ends of the goods shelf plate (8), one end, far away from the goods shelf plate (8), of the lifting rollers (9) penetrates, and a lifting chain (10) is sleeved on the outer side of the chain wheel (7), one end of the lifting chain (10) is fixedly connected with the lifting roller (9), and the other end of the lifting chain (10) is fixedly connected with the base (1).

2. The mobile loading and unloading platform capable of lifting at a constant speed according to claim 1, wherein: the equal fixedly connected with support (11) in upper surface both sides of goods shelf plate (8), support (11) set up to the triangle-shaped structure.

3. The mobile loading and unloading platform capable of lifting at a constant speed according to claim 2, wherein: the hydraulic system (5) comprises an oil cylinder (12), the output end of the oil cylinder (12) is connected with a gear pump (13), and the driving end of the gear pump (13) is connected with a motor (14).

4. The mobile loading and unloading platform capable of lifting at a constant speed according to claim 3, wherein: the connecting end of the gear pump (13) is connected with an overflow valve (15), and the overflow valve (15) and the gear pump (13) form closed-loop communication through an oil tank.

5. The mobile loading and unloading platform capable of lifting at a constant speed according to claim 4, wherein: the output end of the oil cylinder (12) is further connected with an electromagnetic valve (16), the output end of the electromagnetic valve (16) is connected with a descending speed regulating valve (17), the output end of the descending speed regulating valve (17) is connected with a descending throttle valve (18), and the descending throttle valve (18) is communicated with an oil tank.