KR102000327B1

KR102000327B1 - Locking device

Info

Publication number: KR102000327B1
Application number: KR1020157000082A
Authority: KR
Inventors: 디트마 퓌겔; 안드레아스 벤츠; 칼 베스터만
Original assignee: 푸츠마이스터 엔지니어링 게엠베하
Priority date: 2012-08-31
Filing date: 2013-08-21
Publication date: 2019-07-15
Also published as: DE102012215546A1; KR20150051985A; EP2890627B1; WO2014033025A1; CN104364185B; EP2890627A1; CN104364185A

Abstract

The present invention relates to a restraining device of a support member (10) for an operating machine. Wherein the support member is adapted to be deployed or swung out or telescoped over an unfolded operation from a collapsed transport position arranged in the chassis or load support frame and the restraint device being secured to the frame, Can be translated between the restraint position and the restraint-releasing position in the housing (18) arranged transversely with respect to the pull-out direction of the seat (10) and biased towards the restraining position by the action of a spring A restraining bolt 20, an actuating member 34 for moving the restraining bolt 20 between the restraining position and the restraining position, and connecting and guiding members 24, 26, 28 for the restraining bolt, The connecting and guiding member is rigidly arranged on the supporting member 10 and the connecting and guiding members 24, 26 and 28 comprise cams 38, 40 and 42 for pressing the constraining bolts 20 to the discharging position ), And the phase The restraint bolt 20 in the release position can be automatically moved to a position of restraint constraining bolts. According to the invention, at least two connecting and guiding members (24, 26, 28) are provided, and one of the connecting and guiding members, in order to be automatically constrained to the positions of the different supporting members, A first connecting position A for the restraining bolt 20 in the folded carrying position area of the supporting member 10 and a second connecting position A for the restraining bolt 20 in the operating position area in which the supporting member 10 is fully opened or swung or telescopically moved (B) for the restraining bolt (26), and the second connecting and guiding member includes connecting positions (C, D) arranged between the first and second connecting positions .

Description

LOCKING DEVICE

The present invention relates to a restraining device for a support member for an operating machine, the support member being arranged in the chassis or load support frame and being adapted to be deployed, swung out or telescoped over the deployed operation from a collapsed transport position And the restraining device can translate between the restraint position and the restraining position in the housing 18 fixed to the frame and arranged transversely with respect to the pull-out direction of the support member A restraining bolt biased toward the restraining position by the action of a spring, an operating member for moving the restraining bolt between the restraining position and the restraining position, and a connecting and guiding member for the restraining bolt, The member is rigidly arranged on the supporting member, and the connecting and guiding member is provided with a cam Wherein the constraining bolt at the discharge position is automatically movable to a constraining position of the constraining bolt.

In general, mobile work machines with a crane or boom structure are supported at the working position of the ground by support legs that can be extended or unfolded outward (EP-A 0 357, 988). In this case, it is important that the supporting members, which can be enlarged by, for example, the hydraulic motor, are effectively and reliably restrained by the restricting device to the inner carrying position and the supporting position. A restraining device of this type is known from DE 42 11 493 A1. The apparatus comprises two connecting and guiding members and one of the connecting and guiding members is arranged in the two end positional regions of the supporting member which form the carrying position and the fully expanded working position of the supporting member. Before moving from one of the end positions, the restraining device is released by the operator. In this case, the restraint bolt of the restraining device moves to a biased unlocking position. Next, when one of the connecting and guiding members passes, the restricting bolt moves to the restraining position by the cam of the connecting and guiding member and is automatically connected to the restraining position behind the connecting and guiding member. Next, the support member is fixed until the operator next releases the restraining device. However, sometimes there is such a working environment that one or more of the support members can not be fully enlarged when the operating machine is positioned close to a wall or other object. In this case it is important that the support members move to a well defined support position as a reliable pivot range of the crane or boom is formed by the support span. In this case, the support members are often considered to be enlarged or reduced by a chain drive instead of using a hydraulic cylinder, which is relatively easy and cost-saving for such use. However, according to the problems of the chain actuators, it is not possible to accommodate the load in the telescopic direction or the enlarging direction, so that an additional safety device using the mechanical lock is required. In order to form mechanical restraint at intermediate positions, in principle the connecting and guiding member can have a connecting position at desired positions. However, due to the automatic function of the restraint device, the restraint bolt must be connected at each intermediate position and the worker must perform the restraint process in each case for passing through the intermediate position. This work seems very annoying.

It is therefore an object of the present invention to further develop an apparatus of this type capable of selectively and automatically restraining an extension of a support member between both end positions and said end positions.

A combination of the features provided in claim 1 is proposed to achieve the above object. Further embodiments and advantageous embodiments of the invention are provided from the dependent claims.

The main idea underlying the present invention is that locking in the partially unfolded condition of the support member is often required, but not always necessary. In this case, a clear preselection must be made by the operator. According to the invention this is achieved by means of at least two connecting and guiding members, wherein one of the connecting and guiding members has a first connecting position for the restraining bolt in the folded carrying position area of the supporting member and a second connecting position for the fully- Or swinging or telescoping movement of the restraint bolt in the operative position area and the second connecting and guiding member comprises a connecting position arranged between the first and second connecting positions do. The housing of the constraining bolt is arranged on the frame so as to pivot or move so that the constraining bolt can be arranged in one of the connecting and guiding members. Therefore, the operator simply selects one of the connecting and guiding members to be provided with the desired connecting position and manually release the restraining bolt. The support member can be moved to a desired pull-out position in which the restraining bolt is automatically connected to and constrained by the support member without further intervention of the operator.

In this connection, in principle, it is sufficient if only the second further connecting and guiding member is connected to each connecting position. In a preferred embodiment of the present invention, however, the second and further connecting and guiding members are arranged in a first connecting position and a second connecting position located to the outermost connecting position, through which the supporting member is fully extended, / RTI >

The cam provided on the connecting and guiding members facilitates automatic triggering of the constraining bolt. The connecting and guiding member which allows the fully extended position of the support member to be directly selected comprises cams arranged between the first and second connecting positions. The second and another connecting and guiding member are located between a first connecting position and an intermediate connecting position and include a cam for the restraining bolt between the intermediate connecting position and the second connecting position. As a result, while automatic triggering of the restraining bolts is maintained at the connecting position when the restraint bolt is manually restrained by the operator, the supporting member is moved from the current connecting position along the respective connecting and guiding members to another You can move to the connection location. The connecting and guiding members each include a rail element having a sliding surface for the restraining bolt located in the releasing position. When the restraint bolt is actuated by one of the cams, the restraint bolt slides along the rail element until the next connecting position is reached. The connecting position for the restraining bolts arranged between the first and second connecting positions is conveniently formed by a stop in the rail element.

For reasons of safety, the possibility of constraining the support member in the partially unfolded position is complemented by sensor-based monitoring of the actual position of the support member forming part of the electronic control unit for the crane or boom . For example, the control device of this type is disclosed in document EP 2 038 493 B1. A support for a supply line having two front support members and two rear support members that can be deployed from the transport position to the support position and each have a telescopic support leg and can be supported on the ground, A self-contained concrete pump with an articulated mast used is described. Further, each of the support members includes an inner support position proximate the chassis and at least one outer support position spaced apart from the chassis, and the support positions can be freely selected by defining fixed support structures for the four support extensions . In addition, the control device provided for the movement of the mast arm includes a software routine, which responds to the selected support structure and which, in accordance with the specifications for the selected support structure, Forming an associated rotational angle range of the pivot angle of the articulated arm and of the rotatable head about the vertical axis. According to an aspect of the present invention, a selection position is provided having a plurality of switching positions responsive to different support structures, and a control device for movement of the mast arm is responsive to switching positions of the selection switch. The control device for the movement of the mast arm also includes a software routine or a limit switch which is responsive to the selected support structure and which, according to the specifications regarding the selected support structure, Forming a pivot angular range of the mast arm and an associated rotational angle range of the rotatable head about a vertical axis. The intermediate connection positions of the present invention, which are sensed by sensors, are advantageously included in the control device of this type.

The invention is explained in detail by the embodiments schematically shown in the drawings.

BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is a perspective view of a frame of an operating machine with a restraint mechanism located within the region of the receiving means in the form of a box for the support member and arranged to pivot on the frame restricting the support member.
2 is a perspective view showing a supporting member having three connecting and guiding members for the restraining mechanism shown in Fig. 1; Fig.
3 is an end view showing a frame and a support member having a restricting mechanism arranged on a frame.

The apparatus shown in the drawing essentially comprises a support member 10, a restraining mechanism 16 and three connecting and guiding members 24, 26 and 28, Wherein the locking mechanism is arranged to be movable within the box of the chassis and the locking mechanism is arranged outside the box and includes a housing and a locking bolt, The restraint bolt is movable transversely with respect to the pull-out direction of the support member within the housing, the housing partially passing through the opening (22) inside the wall of the box (12) The connecting and guiding members are enlarged between two end positions which are arranged on the supporting member and which can be formed by the supporting member (10).

The restricting mechanism 16 is fixed to the box 12 so as to be pivotally rotatable about the shaft 30, and the opening 22 is formed to coincide with an elongated hole of a partial circular shape. Characterized in that said restraining mechanism (16) comprises a handle (32), said restraining mechanism being adapted to move to one of three pivoting rotational positions, said restraining mechanism Are arranged in each of the three connecting and guiding members (24, 26, 28).

The three connecting and guiding members 24, 26, 28 are formed in a substantially rail-shaped configuration and provide a total of four connecting locations for the restraining bolts 20. In each case, in each case a fully retracted transport position (first connection position A) of the support member 10 and a fully extended position of the support member 10 (a second connection position B), as well as two further connection positions (C, D) arranged between the end positions when the support member can not be fully extended or need to be extended. And guide members 24, 26, 28 further include cams for automatically initiating actuation of the constraining bolts 20 as described below.

The connecting and guiding member 26 extends between the connecting positions A and B without interruption. At a first distance from the connecting position A, the connecting and guiding member 24 includes a stop part forming a connecting position C and extends to the connecting position B beyond the stop part. At a second distance from the connecting position A, the connecting and guiding member 28 includes a stop portion forming a connecting position D and extends to the connecting position B beyond the stop portion. (From the connecting position A), the restraining mechanism 16 is arranged in one of the three connecting and guiding members 24, 26, 28 in order to select the desired connecting position B, C, As shown in FIG.

The design and method of the restraint mechanism 16 is described in detail in EP 0 633 847 B1. Thus, the constraining bolt 20 includes three operative positions: a constrained position, a constrained release position, and a release position.

In the restraining position, the restraining bolt (20) is urged out of the housing by a load of a spring arranged in the housing (18) of the restraining mechanism. 3, the restraining bolts 20 are arranged such that (at both end positions A and B of the support member 10) one of the three connecting and guiding members, (At the two intermediate positions C, D of the support member 10) a stop for the end face interfaces of the interrupted portions of the connecting and guiding members 24, Next, the support member 10 is blocked in the moving direction, i.e., restrained against the chassis of the moving machine.

When the lever of the restraining mechanism 16 is manually operated by the operator, the restraining bolt 20 is subjected to a spring load and moves to the restraining position. In the restraining releasing position, the restraining bolt 20 is moved to the housing 18 And is fixed to the restraining position, that is, the restraining bolt 20 is held in the restraining position without being influenced by the outside in spite of the action of the spring load. Each connecting and guiding member is not blocked at the restraining position of the restraining bolt 20, and the supporting member 10 can move in both moving directions (double arrows in Fig. 2).

Between the connecting positions C, D and the connecting position B as well as the connecting positions B, C, D and the connecting position A, the connecting and guiding members 24, 26, , 40, and 42, the cams projecting toward the restraining mechanism 16 and moving the constraining bolts 20 from the restraining position to the release position. The restraint bolt 20 is moved from the release position to the restraining position by a spring arranged in the housing 18 of the restraining mechanism 16. This action is formed at the instant when the interrupt function formed by the cams 38, 40, 42 is overcome. Next, the restraint bolt 20 is automatically snapped to a connecting position along the displacement direction.

In principle, it is not necessary for the connecting and guiding members 24, 28 to extend beyond the respective connecting positions C, D to further extend to the connecting position B in order to practice the present invention, The support member 10 can be connected to the support member 10 without completely folding the support member 10 to the connection position A in advance so that the support member 10 can extend to the connection position B by selecting the connection and guide position 26, ) To the connecting position (B) from the connecting position (C, D). According to the design of the connecting and guiding member, the connecting positions (A, C, D) can be selectively accessed from the connecting position (B).

If the supporting member 10 is to be moved from the connecting position C or D or the connecting position B to the connecting position A, the restraint mechanism 16 is firstly manually operated by the operator using the lever 34, . The restraint bolt is once again moved to the release position by the respective cams 38, 40, and 42, and after passing through the cam, until the restraint bolt reaches the connecting position A and is automatically connected to the connecting position, Shaped surface of the connecting and guiding member.

Only the mechanical components of the device are shown and described in the figures. However, in addition to the mechanical components, electronic components such as a position sensor are provided for the support member 10 and the restraining device, and the electronic components are contained in the control system of the operating machine, and even when the support members are only partially extended, Is not exceeded.

In summary. The present invention relates to a restraining device of a support member (10) for an operating machine. Wherein the support member is adapted to be deployed or swung out or telescoped over an unfolded operation from a collapsed transport position arranged in the chassis or load support frame and the restraint device being secured to the frame, Can be translated between the restraint position and the restraint-releasing position in the housing (18) arranged transversely with respect to the pull-out direction of the seat (10) and biased towards the restraining position by the action of a spring A restraining bolt 20, an actuating member 34 for moving the restraining bolt 20 between the restraining position and the restraining position, and connecting and guiding members 24, 26, 28 for the restraining bolt, The connecting and guiding member is rigidly arranged on the supporting member 10 and the connecting and guiding members 24, 26 and 28 comprise cams 38, 40 and 42 for pressing the constraining bolts 20 to the discharging position ), And the phase The restraint bolt 20 in the release position can be automatically moved to a position of restraint constraining bolts. According to the invention, at least two connecting and guiding members (24, 26, 28) are provided, and one of the connecting and guiding members, in order to be automatically constrained to the positions of the different supporting members, A first connecting position A for the restraining bolt 20 in the folded carrying position area of the supporting member 10 and a second connecting position A for the restraining bolt 20 in the operating position area in which the supporting member 10 is fully opened or swung or telescopically moved (B) for the restraining bolt (26), and the second connecting and guiding member includes connecting positions (C, D) arranged between the first and second connecting positions .

10: supporting member,
18 ... housing,
20 ....... constraining bolts,
34: operation member,
24, 26, 28 ... connection and guide member,
38, 40, 42 ... Cam.

Claims

A restraining device for a support member (10) for an operating machine, the support member being arranged in a chassis or load support frame and being adapted to be deployed, swung out or telescoped from an folded carrying position to an unfolded, And the restraint device is adapted to move between a restraining position and a restraining position in a housing 18 fixed to the frame and transversely arranged with respect to a pull- An operation member (34) for moving the restraint bolt (20) between the restraint position and the restraining position, and a restraining bolt (20) for restraining the restraint bolt Wherein the connecting and guiding members are rigidly arranged on the support member and the connecting and guiding members are arranged on the constraining bolts 20) to a release position, wherein the constraining bolt (20) at the discharge position is automatically movable to a constraining position of the constraining bolt,
At least two connecting and guiding members (24,26,28) are provided and one of the connecting and guiding members is located at a first connecting position for the restraining bolt (20) in the folded carrying position area of the supporting member (B) for a restraining bolt (20) in an operating position area in which the support member (10) is fully extended, swung or telescopically moved, and a second connection Wherein the guide member includes connecting positions (C, D) arranged between the first and second connecting positions.

The restraint apparatus according to claim 1, wherein said second connection and guiding member (24, 28) extends between said first and second connecting positions (A, B).

3. The apparatus according to claim 1 or 2, characterized in that the connection positions (C, D) of the second and third connection and guide members (24, 28) arranged between the first and second connection positions Are located at different distances with respect to the first connection position (A).

A restraint device according to claim 1 or 2, characterized in that said at least two connecting and guiding members (24, 26, 28) are arranged parallel to each other.

4. The restraint apparatus according to claim 3, wherein the at least two connecting and guiding members (24, 26, 28) are arranged parallel to each other.

3. A method according to claim 1 or 2, characterized in that the connection between the first and second connection positions (A, B) and the connection position (C, D) Wherein the guide members (24, 28) comprise cams (38, 40, 42), which move the constraining bolts (20) from the restrained release position to the release position.

4. The apparatus according to claim 3, characterized in that said second connection and guide member (24) is arranged between said connection position (C, D) arranged between said first and second connection positions (A, B) , 28) includes cams (38, 40, 42), which move the constraining bolts (20) from the restrained release position to the release position.

3. A device according to claim 1 or 2, wherein said constraining bolt (20) moves or pivots said housing (18) on said frame (12) to selectively connect one or the other connection and guide members , 28). &Lt; / RTI >

4. The assembly of claim 3, wherein said constraining bolts (20) are adapted to move or pivot the housing (18) on the frame (12) to selectively engage one or the other of the connecting and guiding members Wherein the restricting member is adapted to be arranged.

2. The restraint device according to claim 1, characterized in that said connecting and guiding members (24,26,28) each comprise a rail element having a sliding surface for the restraining bolt (20) located in said discharge position.

3. A restraint device according to claim 2, characterized in that said connecting and guiding members (24,26,28) each comprise a rail element having a sliding surface for the restraining bolt (20) located in said releasing position.

4. A restraint device according to claim 3, characterized in that said connecting and guiding members (24,26,28) each comprise a rail element having a sliding surface for the restraining bolt (20) located in said discharge position.

11. A method according to claim 10, characterized in that the connecting positions (C, D) for the constraining bolts (20) arranged between the first and second connecting positions (A, B) Characterized in that the restraining device.

4. A connector according to claim 3, characterized in that the connecting and guiding members (24,26,28) each comprise a rail element having a sliding surface for the restraining bolt (20) located at the discharge position, (C, D) for a restraining bolt (20) arranged between the restraining bolts (A, B) is formed by a stop in the rail element.