JPS6118516B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a crane saddle, and particularly to a crane saddle having a configuration suitable for improving the strength of a driving portion.

[Conventional technology]

Conventional structures for maintaining the strength of the drive part of crane saddles include increasing the thickness and external dimensions of the parts used in the saddle frame itself to make the entire structure stronger, and welding and fixing reinforcing material near the drive part. One possible method is to improve the strength by

[Problem that the invention seeks to solve]

In such conventional crane saddles, the saddle frame of the former uses long section steel, etc., so in order to improve the strength of the driving part in an extremely local area, a large member must be used as a whole, making it difficult to transport and crane due to the heavy weight. There are problems that lead to a decrease in economic efficiency due to a decrease in ease of assembly and installation and an increase in material costs. In addition, if the strength of the latter is simply welded around the final reduction part, which reduces the strength, the structure becomes complicated and the space required for disassembling and assembling the wheels and drive wheels is reduced, which makes the work difficult. However, there is a problem in that it leads to a decrease in performance and maintainability.

[Means for solving problems]

A frame body 3 is constructed by arranging the shaped steel sections 1A and 1B to face each other with a space between them, and welding and fixing the side plates 2A and 2B to both sides thereof.A driving wheel 4 and a driven wheel 5 are arranged in the longitudinal direction of this frame body 3.
are rotatably attached via an axle 6, a gear 7 is formed on the drive wheel 4 at a position within the frame 3, and a gear 8 is provided which meshes with the gear 7 and is supported on one side by the frame 3. , in a crane saddle in which this gear 8 is connected to an electric motor 9, the section steel 1A near the upper part of the axis of the gear 8 supported on one side;
A mounting member 13A is welded and fixed to the upper surface of the mounting member 1B, and the mounting member 13A is welded and fixed to the upper surface of the mounting member 1B.
Another mounting member 13B is welded and fixed to a symmetrical position of 3A, and a reinforcing plate 14 is mounted and fixed with bolts 15 so as to bridge these mounting members 13A and 13B and cover the drive wheel 4 and both gears 7 and 8. This crane saddle is characterized by:

[Effect]

According to this crane saddle, the mounting member 13A welded to the upper surface of the section steel 1A near the upper part of the axis of the gear 8 is connected to the other mounting members 13A and 13B via the reinforcing plate 14, so that the gear 8 Shaped steel 1 due to bending moment generated at the root
Local strength improvement can be achieved with respect to the deformation of A.
Further, the reinforcing plate 14 can be attached and detached via bolts 15,
Moreover, since the reinforcing plate 14 covers the drive wheel 4 and the gears 7 and 8, it has the function of a safety cover. Furthermore, when crane saddles collide with each other or a stopper due to a malfunction in crane operation, the impact force acts on the saddle frame 3, causing a deformation phenomenon in which the steel sections 1A and 1B tend to shift in the longitudinal direction. However, this can definitely be prevented.

〔Example〕

An embodiment of the present invention will be described with reference to FIGS. 1 and 2. The crane saddle, which is the traveling part of the crane, is made up of section steels 1A and 1 that face each other with a gap between them.
A frame body is constructed by welding and fixing both sides of B with side plates 2A and 2B, and a driving wheel 4 and a driven wheel 5 are rotatably attached to this frame body 3 via an axle 6, respectively. A gear portion 7, which is a final reduction gear, is integrally formed on the drive wheel 4, and a gear 8 having a one-sided support structure is meshed with the gear portion 7, so that the rotation of the electric motor 9 is transmitted to the gear 8 via the reduction portion 10 other than the final stage. communicated. As a result, the drive wheel 4 rotates and runs on the rail 11,
Cushioning material 12 is provided on the outside of both side plates 2A and 2B of the frame 3.
is installed. Shape steel 1A and 1 of frame 3
Mounting members 13A and 13 are mounted on the upper surface of drive side B.
B is attached by welding, and this attachment member 13A, 1
3B, a rectangular reinforcing plate 14 is attached to the bolt 1.
5 is installed and fixed. The mounting member 13
A is welded and fixed to the upper surface of the section steel 1A near the upper part of the axis of the gear 8 and the section steel 1B opposing this, and the other mounting member 13B is located at a substantially symmetrical position with respect to the axle 6 that supports the drive wheel 4. Shaped steel 1A and 1
It is welded and fixed to B.

When such a crane saddle is assembled as a traveling part of a crane and travels on the rail 11 with a load suspended, the rotational force of the electric motor 9 is transmitted to the final stage gears 8 and 7 via the reduction part 10 and is decelerated. Rotate the drive wheel 4. As the drive wheel 4 rotates, a tangential force P commensurate with the rotational force is generated at the meshing portion of the gears 7 and 8, so that the root of the gear 8, which has a one-sided support structure, is bent at the support part of the so-called section steel 1A. A moment is generated that tries to deform the section steel 1A or to cause meshing vibration between the gears 7 and 8, which may cause a problem of insufficient strength of the saddle drive part, but depending on the structure of the crane saddle, For example, it is small, has excellent assembly workability and disassembly and maintainability, improves safety, and improves the strength of the driving portion of the saddle frame.

That is, the section steel 1A near the upper part of the axis of the gear 8
The mounting member 13A welded to the upper surface of the reinforcing plate 14
Since it is connected to the other mounting members 13A and 13B via , it is possible to locally improve the strength against deformation of the section steel 1A due to the bending moment generated at the root of the gear 8. With this, the saddle frame 3
There is no need to increase the size of the shaped steels 1A and 1B themselves, and the strength can be set based on the load from the garter side, and the saddle frame 3 can be made smaller. Further, since the reinforcing plate 14 can be attached and detached via the bolts 15, the assembly workability and disassembly maintainability are excellent. Furthermore, since the reinforcing plate 14 covers the driving wheel 4 and the gears 7 and 8, it has the function of a safety cover, and can improve safety. Furthermore, when crane saddles collide with each other or with a stopper due to a malfunction in crane operation, the collision force acts on the saddle frame 3 and the section steel 1
Although a deformation phenomenon occurs in which A and 1B tend to shift in the longitudinal direction, this can be reliably prevented and safety is significantly improved.

〔Effect of the invention〕

According to the present invention, the following effects are achieved.

(1) Since the strength can be locally improved against the deformation of the section steel 1A due to the bending moment generated at the root of the gear 8, there is no need to increase the size of the section steels 1A and 1B of the saddle frame 3 themselves. , just set the strength based on the load from the garter side,
It is possible to downsize the saddle frame 3.

(2) Since the reinforcing plate 14 can be attached and detached via the bolts 15, the assembly workability and disassembly maintainability are excellent.

(3) Since the reinforcing plate 14 covers the driving wheel 4 and the gears 7 and 8, it has the function of a safety cover and can improve safety.

(4) A deformation phenomenon in which when crane saddles collide with each other or a stopper due to a malfunction in crane operation, the impact force acts on the saddle frame 3 and the steel sections 1A and 1B tend to shift in the longitudinal direction. will occur, but this can be reliably prevented, so
This significantly improves safety.

[Brief explanation of the drawing]

FIG. 1 is a partially sectional plan view of a crane saddle of the present invention, and FIG. 2 is a front view of the same crane saddle. 1A, 1B... Shaped steel, 3... Frame, 4... Driving wheel, 5... Driven wheel, 7, 8... Gear, 11... Rail, 13A, 13B... Mounting member, 14... Reinforcement Board, 15... bolts.

Claims (1)

[Claims] 1. Frame 3 is constructed by arranging section steel 1A, 1B facing each other with an interval, and welding and fixing side plates 2A, 2B to both sides thereof.A driving wheel 4 and a driven wheel 5 are arranged in the longitudinal direction of this frame 3. rotatably attached via an axle 6, forming a gear 7 on the drive wheel 4 at a position within the frame 3;
In a crane saddle in which a gear 8 meshing with the gear 7 and supported on one side by the frame 3 is provided, and the gear 8 is connected to an electric motor 9, the shaped steel near the upper part of the axis of the gear 8 supported on one side is provided. 1
Weld and fix the mounting member 13A to the top surface of A, 1B,
Another mounting member 13B is welded and fixed to the mounting member 13A at a symmetrical position with respect to the axle that supports the drive wheel 4, and these mounting members 13A, 13B are bridged to connect the drive wheel 4 and both gears 7, 8. A crane saddle characterized in that a reinforcing plate 14 is attached and fixed with bolts 15 so as to cover the crane saddle.