SHOCKPROOF DEVICE FOR CRANE OVERHEAD

Abstract

This utility model pertains to lifting and transport engineering, specifically to shock-absorbing devices for overhead cranes. It can be used for overhead cranes with various overhead crane bridge configurations and different locations of the shock-absorbing elements installed on the overhead cranes, all traveling along the same crane runway. The shock-absorbing device for the overhead crane consists of a bracket mounted on the overhead crane's undercarriage support, to which is attached a deformation rod having a groove into which a shock-absorbing nozzle made of an elastic material is inserted with tension, with a portion of the nozzle protruding from the groove. The technical result of the claimed utility model consists of expanding the arsenal of known technical means used to dampen shock loads and prevent overhead cranes from coming too close together.

Description

[0001] The proposed utility model relates to the field of lifting and transport engineering, namely to shock-absorbing devices for overhead cranes, and can be used for overhead cranes that have different modifications of overhead crane bridges, different locations of shock-absorbing elements installed on overhead cranes moving along the same overhead crane tracks.

[0002] A known damper part of an energy absorption device (patent for utility model RU 184340, IPC F16F 1 / 40, F16F 3 / 087, F16F 1 / 373, B67G 9 / 06, B61G 9 / 14, B61G 11 / 08, published on 10 / 22 / 2018) contains a pre-pressed damper located on the bottom of the housing, covering its bonnet, and a rod passed through it. The pre-pressed damper is formed from elastic-elastic elements interspersed with plates, one of which is a support element. The elastic-elastic elements are made of a volume of material enclosed between their curved side surface and end surfaces, and are provided with a through hole along the main axis, the edges of which are aligned with the aforementioned end surfaces. The support element is located in the through hole of the elastic-elastic support element.The width and size of the through hole of the supporting elastic element are larger than the width and size of the hole of the remaining elastic elements, and a relief is made on the lateral curved surface of the elastic elements.

[0003] A disadvantage of the known device is the complex damper design, consisting of a large number of parts. The end surfaces of the elastic elements, designed with a slope from the curved side surface to the main axis at an angle of 0 to 5°, also hinders manufacturability. Furthermore, scaling and manufacturing this design significantly increases material consumption.

[0004] A crane buffer (patent RU 2458848, IPC B66C 7 / 16, published 20.08.2012) is known. It comprises a housing with a movable shaft, an operating spring, and a support plate. The movable shaft is designed with oblique splines, through which it is connected to a hub, which interacts via a flat spring with a flywheel that absorbs the impact load.

[0005] The disadvantage of the faucet buffer is its low-tech design: a complex-to-manufacture splined shaft with helical guides, requiring specialized equipment for producing helical splines, and a counter-part (flywheel) made of high-alloy materials, which are additionally heat-treated. The existing device is not capable of withstanding constant, sharp impact loads, as this would cause significant wear on the splines of the mating components. This device only tolerates gentle impact loads.

[0006] The objective of the claimed utility model is to create additional damping elements, since when using different modifications of crane beams, the existing damping elements installed by the manufacturer do not match at the joints.

[0007] The stated problem is solved in that the shock-absorbing device consists of a bracket mounted on the running support of the crane beam, on which a deformation rod is fixed, having a groove into which a damper nozzle made of elastic material is inserted with tension, while part of the nozzle protrudes from the groove.

[0008] Rubber, natural rubber or polyurethane can be used as the elastic material.

[0009] The mounting bracket and the deformation rod are made of low-alloy steel grade 09G2S, which allows this design to withstand impact loads well.

[0010] The technical result of the claimed utility model consists in preventing the maximum convergence of crane beams.

[0011] The claimed technical solution is explained by drawings and photographs: Fig. 1 – side view of the device, Fig. 2 – front view of the device, Fig. 3 – top view of the device, Fig. 4, 5 – photos of the device elements mounted on a crane beam.

[0012] The shock-absorbing device for the overhead crane comprises a bracket 1 secured by means of a bolted connection 2 on the undercarriage support 3 of the overhead crane. A deformation rod 4 is welded to the bracket 1. A groove with a depth of 50 mm is made in the deformation rod 4, in which a rubber damper attachment 5 is installed with a guaranteed tension, protruding from the groove by 30 mm (the working part).

[0013] When two crane beams 6 and 7 move loads simultaneously, or when they are brought too close together, a collision may occur. Standard dampers installed on the crane beams do not touch, as the shock absorber elements are positioned differently on different crane bridge models. When crane beams 6 and 7 approach each other, the proposed shock absorber, located at each end of the bridge of the corresponding crane beam, limits the maximum proximity of the travel bridges, while damper attachment 5 made of dense rubber and expansion rod 4 absorb the impact loads.

[0014] The bracket 1 and the deformation rod 4 are made of low-alloy steel grade 09G2S, which allows this design to reliably withstand impact loads without destroying the crane beam support.

[0015] This utility model has a simple design, improves industrial safety in production, as well as operational reliability due to careful handling of the equipment.

Claims

1. An anti-shock device for a crane beam, consisting of a bracket mounted on the running support of the crane beam, on which a deformation rod is secured, having a groove into which a damper nozzle made of elastic material is inserted with tension, with part of the nozzle protruding from the groove.

2. The device according to paragraph 1, characterized in that the damper attachment is made of rubber.

3. The device according to paragraph 1, characterized in that the damper nozzle is made of rubber.

4. The device according to paragraph 1, characterized in that the damper nozzle is made of polyurethane.

5. The device according to paragraph 1, characterized in that the bracket and the deformation rod are made of low-alloy steel grade 09G2S.

Images