CN112125142A

CN112125142A - Device for improving bearing capacity of mobile lift truck

Info

Publication number: CN112125142A
Application number: CN202010991520.9A
Authority: CN
Inventors: 杨征; 邵天双; 牟伟强
Original assignee: AVIC Aerodynamics Research Institute
Current assignee: AVIC Aerodynamics Research Institute
Priority date: 2020-09-18
Filing date: 2020-09-18
Publication date: 2020-12-25

Abstract

The invention discloses a device for improving bearing capacity of a mobile lift truck, which comprises a counterweight mechanism, wherein a plurality of sets of counterweight mechanisms are symmetrically arranged among four vertical columns on two sides of the mobile lift truck, the counterweight mechanism comprises a fixed pulley, a traction rope and a counterweight block, the fixed pulley is fixedly connected with a top beam of the mobile lift truck through a hanging frame, the traction rope is wound on the fixed pulley, one end of the traction rope is fixedly connected with the counterweight block, and the other end of the traction rope is fixedly connected with a lifting cross beam of a lifting mechanism. The invention improves the lifting capacity of the mobile lift truck, can meet the requirement of a half-module test, simultaneously reduces the abrasion of parts such as a screw rod and a nut of the mobile lift truck, and prolongs the maintenance period of a lift truck system.

Description

Device for improving bearing capacity of mobile lift truck

Technical Field

The invention relates to a device for improving bearing capacity of a mobile lift truck.

Background

The movable lift truck is used as a heavy-duty equipment transportation and auxiliary installation mechanism and is an essential medium mechanism in a wind tunnel test. The conventional mobile lift truck bears 38 tons in rated capacity, as shown in fig. 4, the motor is adopted to drive a screw rod to lift a lifting beam, the weight of a lower wall plate and the weight of a hanging basket of the mobile lift truck are close to the rated load, beams with the length of 10.3 meters are arranged on the left side and the right side of a lifting mechanism, the weight is about 6 tons, and the situation that the mobile lift truck bears too large load and is difficult to lift in the using process, the lifting capacity of a system is seriously influenced, and the bearing tonnage of the system is reduced; if the half-mold test is carried out, the movable lifting vehicle can not lift normally, and the test process is influenced.

Disclosure of Invention

Based on the defects, the invention provides the device for improving the bearing capacity of the mobile lift truck on the basis of the original mobile lift truck, and solves the problem of insufficient bearing capacity of the mobile lift truck.

The technology adopted by the invention is as follows: a device for improving bearing capacity of a mobile lift truck comprises a counterweight mechanism, wherein a plurality of sets of counterweight mechanisms are symmetrically arranged among four vertical columns on two sides of the mobile lift truck, each counterweight mechanism comprises a fixed pulley, a traction rope and a counterweight block, the fixed pulleys are fixedly connected with a top beam of the mobile lift truck through hangers, the traction ropes are wound on the fixed pulleys, one end of each traction rope is fixedly connected with the corresponding counterweight block, and the other end of each traction rope is fixedly connected with a lifting cross beam of a lifting mechanism; and a guardrail is arranged at the periphery of the counterweight mechanism.

The invention has the following advantages and beneficial effects: the lifting capacity of the mobile lift truck is improved, the half-module test can be met, meanwhile, the abrasion of parts such as a screw rod and a nut of the mobile lift truck is reduced, and the maintenance period of a lift truck system is prolonged.

Drawings

FIG. 1 is a perspective view of a modified mobile lift truck according to example 1;

FIG. 2 is a side view showing a structure of a modified moving cage of the embodiment 1;

FIG. 3 is a front view of a modified structure of the mobile lift car according to embodiment 1;

FIG. 4 is a top view of the mobile lift car configuration;

Detailed Description

The invention will be further described by way of example with reference to the accompanying drawings in which:

example 1

As shown in fig. 1-3, a remove lift truck and promote bearing capacity device, including counter weight mechanism, be symmetrical arrangement four sets of counter weight mechanisms between four stands of the both sides of removing the lift truck, two sets of counter weight mechanisms of assembly between two stands of every side promptly, counter weight mechanism include fixed pulley 1, haulage rope 2 and balancing weight 3, haulage rope 2 adopts wire rope, stores pylon 4 after drilling tapping adjustment position targets in place with the downside full weld fixed connection of back timber 5, fixed pulley 1 adopts bolt fixed connection with stores pylon 4, wire rope winds on fixed pulley 1, wire rope's one end with through counter weight lug 6, tray and balancing weight 3 is connected, wire rope's the other one end is through bottom rings 7 and lift mechanism's lifting beam 8 fixed connection. The rated load of the fixed pulley 6 is 3.2 tons, the counterweight 3 acts on a lifting beam 8 of the lift truck through the fixed pulley 1 and a steel wire rope, and the direction of the torque generated by the self weight of the lifting beam 8 and lifting equipment is opposite to that of the torque generated by the counterweight 3, so that the driving torque of a system motor can be effectively reduced by moving the lift truck lifting bearing capacity device; meanwhile, the abrasion of parts such as a screw rod and a nut of the movable lift truck can be reduced, the maintenance period of the lift truck system is prolonged, the scheme is simple and easy to operate, and the half-mode test which is possibly performed in the future can be met. The guardrail 9 is welded with the existing inclined support circular tube, and is combined by a plurality of sections, the two ends of the guardrail are connected by inserting pin shafts and then welded, so that the interface is smooth and free of clamping stagnation, the enclosure frame adopts angle steel design and is welded with the guardrail, the protection effect is realized, and the counter weight block 3 is prevented from equipment collision and personnel damage caused by shaking in the up-and-down movement process; the balancing weight 3 is composed of a plurality of square lead blocks with the same weight and size, and is provided with a through hole which is connected with the balancing lifting lug 6 and the balancing tray. The tail ends of the counterweight lifting lugs 6 are connected in a bolt mode.

Claims

1. The utility model provides a remove lift truck promotes bearing capacity device, includes counter weight mechanism, its characterized in that: be symmetrical arrangement between four stands of the both sides of removing the lift truck and have many sets of counter weight mechanisms, counter weight mechanism include fixed pulley, haulage rope and balancing weight, the fixed pulley passes through the stores pylon and removes the back timber fixed connection of lift truck, the haulage rope is around on the fixed pulley, the one end and the balancing weight fixed connection of haulage rope, the other one end and the lifting beam fixed connection of lifting mechanism of haulage rope.

2. The device of claim 1, wherein the load carrying capacity of the mobile lift car is: and a guardrail is arranged at the periphery of the counterweight mechanism.