CN2174731Y

CN2174731Y - Automatic zero position resetting apparatus for operating handle of manual controller

Info

Publication number: CN2174731Y
Application number: CN 93222686
Authority: CN
Inventors: 周亚民
Original assignee: Individual
Current assignee: Individual
Priority date: 1993-08-22
Filing date: 1993-08-22
Publication date: 1994-08-17
Anticipated expiration: 2003-08-22

Abstract

The utility model relates to an automatic zero position resetting apparatus for the operating handle of a manual controller. The utility model is suitable for a desk type master controller, a cam controller and the linking control desk of a hoister. A thumb wheel is connected with a control shaft. Both sides of the thumb wheel are provided with two thumb blocks which can rotate around a pivot shaft. The positions of the zero positions of the thumb blocks are confirmed by a limiting device. The thumb wheel is thumbed by the thumb blocks with the action of a helical extension spring or a helical compression spring. The zero position of the thumb wheel can be reset, and the zero position of an operating handle can be automatically reset.

Description

Automatic zero position resetting apparatus for operating handle of manual controller

The utility model relates to a kind of operating grip runback null-setting device of manual controller, in particular, relate to a kind of operating grip runback null-setting device of the desk-top manual controller of forming by shell, operating grip assembly, retainer assembly and switch assembly.

For manual controller, when operating grip from zero-bit after a direction is moved a certain gear, must move back zero-bit again with hand, inconvenient operation, even produce the problem of maloperation sometimes.Therefore, adopt operating grip runback null-setting device early to attract much attention.A typical prior art is the two master controllers of being produced by Siemens Company of 3SJ1, has a thumb wheel that links to each other with control lever shaft, torque spring is arranged on the thumb wheel, and determined the zero-bit position of thumb wheel by stop means.Such runback null-setting device can not be directly used in desk-top manual controller, as master controller, cam controller and crane coupled control table owing to be subjected to operating the restriction of gear train geometric space.

Task of the present utility model is special in desk-top master controller, cam controller and crane coupled control table, design a kind of effect that utilizes spiral stretching spring or spiral compression spring, make shifting block stir the runback null-setting device that thumb wheel returns back to the zero-bit position.

Task of the present utility model is achieved through the following technical solutions, at one by shell, the operating grip assembly, in the desk-top manual controller that retainer assembly and switch assembly are formed, one thumb wheel that links to each other is arranged on the control lever shaft in the retainer assembly, there are two shifting blocks that can pivot the both sides of thumb wheel, be pivotally mounted on the bearing, one end bearing of two spiral stretching springs or spiral compression spring is on installing plate, the other end is bearing on the shifting block, shifting block is just pressed to the working surface of thumb wheel under the effect of spring, the zero-bit position of shifting block is determined by two spacing buting iron.When operating grip from zero-bit when a direction is moved a certain gear, thumb wheel is just stirred the shifting block of a side, and the shifting block of opposite side is still pressed to spacing buting iron; When the operator took away hand from operating grip after, shifting block was just stirred thumb wheel under the effect of spring, make thumb wheel be returned to the zero-bit position, thereby reaches the purpose that operating grip automatically replies zero-bit.

Thumb wheel in the device can be made of one with control lever shaft, also can disassemble from control lever shaft.

Bearing in the device can be to be provided with separately, also can be the bearing seat in the retainer assembly.

The utlity model has following characteristics: at the operation gear train geometric space situation of desk-top master controller, cam controller and crane coupled control table, this runback null-setting device of designing is simple and reasonable, and installation and maintenance are convenient, and are reliable.

Below in conjunction with drawings and Examples the utility model is elaborated.

Fig. 1, the basic structure synoptic diagram when the utility model adopts spiral stretching spring.

Fig. 2, the basic structure synoptic diagram when the utility model adopts spiral compression spring.

Fig. 3, the front view of crane coupled control table.

Fig. 4, the A-A cut-open view of presentation graphs 3.

Fig. 5, the front view of clamshell crane coupled control table.

Fig. 6, the B-B cut-open view of presentation graphs 5.

Fig. 7, the vertical view of clamshell crane coupled control table.

As shown in Figure 1, runback null-setting device of the present utility model, bearing (3,13) are to be provided with separately, two spiral stretching springs (2,14) be bearing between installing plate (1) and the shifting block (5,10), the course of action that makes operating grip automatically reply zero-bit is: when operating grip (7) when being in zero-bit, the shifting block (5 of the left and right sides, 10) all under the effect of spring (2,14), press to limiting block iron (6,11).When operating grip when zero-bit is moved a certain gear left, operating grip just drives the control lever shaft (8) that links to each other with it and turns an angle in the counterclockwise direction, the thumb wheel that links to each other with control lever shaft (9) also just turns an angle in the counterclockwise direction, the shifting block (10) of stirring the right side rotates around pivot (12), and the shifting block in left side (5) is still pressed to spacing buting iron (6) under the effect of spring (2); When the operator took away hand from operating grip after, the shifting block on right side (10) was just stirred thumb wheel (9) and is rotated along clockwise direction, and after shifting block knocked spacing buting iron (11), thumb wheel (9) had also just been got back to the zero-bit position.When situation and the above similar process of operating grip when zero-bit is moved to the right, the shifting block in left side (5) rotates around pivot (4), has not just given unnecessary details here.Runback null-setting device of the present utility model, the anglec of rotation of thumb wheel can not be greater than 45 °.For the crane coupled control table, as shown in Figure 3, Figure 4, two control lever shafts (5 that are mutually 90 ° are arranged, 18), by an operating grip (7) centralized control, at the axle head of a control lever shaft (5) thumb wheel that links to each other with this control lever shaft (6) is arranged, there are two shifting blocks (4 both sides of thumb wheel, 8) and two bearings (1 that are provided with separately, the pivot (3 that shifting block (4,8) 11), is arranged on the bearing, 10) and spacing buting iron (2,9); There is a thumb wheel that links to each other with this control lever shaft (19) inside in bearing seat (14) in the centre of another root control lever shaft (18), and there are two shifting blocks (17 both sides of thumb wheel, 20), pivot of shifting block (16,21) and spacing buting iron (15,22) all are arranged on the wall of bearing seat (14).For the clamshell crane coupled control table, as Fig. 5, Fig. 6, shown in Figure 7, two gear shafts parallel to each other (7 are arranged, 14), respectively by linkage assembly (3,6) with two control lever shafts (2,5) link to each other, operating grip both can be operated separately, also can operate simultaneously by two operating grips, inside in bearing seat (8), a thumb wheel that links to each other with control lever shaft (9) is all arranged on every control lever shaft (2,5), and there are two shifting blocks (12) both sides of thumb wheel, shifting block utilizes the effect of spiral compression spring (13) to tightly suppress thumb wheel (9) all the time, and pivot of shifting block (11) and spacing buting iron (10) all are arranged on the wall of bearing seat (8).

The basic structure synoptic diagram of embodiment when Fig. 2 adopts spiral compression spring for the utility model is to act on shifting block (5,10) with spiral compression spring (2,14) in this example, and its principle is roughly the same, does not give unnecessary details in addition.

Claims

1, a kind of operating grip runback null-setting device of manual controller, be particularly suitable for by shell, the operating grip assembly, the desk-top master controller that retainer assembly and switch assembly are formed, cam controller and crane coupled control table, has a thumb wheel that links to each other with control lever shaft in the retainer assembly, back-moving spring, and the stop means of definite thumb wheel zero-bit position, it is characterized in that two of thumb wheel both sides installations are used to stir the shifting block that thumb wheel makes it to reply zero-bit, each shifting block pivotally is supported on the bearing respectively, back-moving spring adopts spiral stretching spring or spiral compression spring, be installed between installing plate and the shifting block, above-mentioned stop means is the cylindrical component that is installed on the bearing.

2,, it is characterized in that wherein said bearing is to be provided with separately according to the described device of claim 1.

3,, it is characterized in that wherein said bearing is the bearing seat in the retainer assembly according to the described device of claim 1.