Traction-mounted and mobile work machinery

Abstract

A traction arrangement for a mobile work machine and a mobile work machine. The arrangement (100) includes a traction element (1) for allowing a traction tool to be connected to the traction arrangement (100). The traction element (1) is arranged such that when a traction force is applied to the traction element (1), the traction element moves relative to a frame (2) of the work machine. The arrangement (100) further includes a hydraulic actuator (3), a first portion (4a) of the hydraulic actuator (3) attached to the frame (2), and a second portion (4b) of the hydraulic actuator (3) connected to the traction element (1), such that the hydraulic actuator (3) is arranged to generate hydraulic pressure with the movement of the traction element (1) relative to the frame (2). The traction arrangement (100) includes a flexible connecting element (5) arranged to connect the traction element (1) to the hydraulic actuator (3) for transmitting the movement of the traction element (1) to the hydraulic actuator (3).

Description

Technical Field

[0001] This invention relates to a traction arrangement for mining machinery.

[0002] The present invention also relates to a mining machinery. Background Technology

[0003] For safety reasons, many mining machines use hydraulic release braking systems to provide automatic fail-safe braking in the event of a loss of vehicle power or hydraulic fluid pressure. This type of brake prevents disabled machinery from being easily towed. To facilitate the towing of disabled machinery, a release arrangement is known for the towing or retrieval hook of such mining machinery. When the machinery is towed from the hook, this release arrangement releases the brake, thereby allowing the towing of the disabled mining machinery.

[0004] However, existing release arrangements are difficult to implement in the typically limited space at the end of the machine. Summary of the Invention

[0005] From a first perspective, a traction arrangement for mobile work machinery can be provided, the traction arrangement comprising: a traction element for allowing a traction tool to be connected to the traction arrangement, the traction element being arranged to move relative to a frame when a traction force is applied to the traction element; a hydraulic actuator; a first portion of the hydraulic actuator attached to the frame; and a second portion of the hydraulic actuator connected to the traction element, such that the hydraulic actuator is arranged to generate hydraulic pressure with the movement of the traction element relative to the frame, wherein the traction arrangement includes a flexible connecting element arranged to connect the traction element to the hydraulic actuator to transmit the movement of the traction element to the hydraulic actuator, the arrangement further including at least one guide member arranged to change the path of the connecting element, wherein the guide member is a pulley.

[0006] Therefore, a traction arrangement that is easy to assemble in mobile machinery can be achieved. The advantage of the guide member is that the path of the connecting element can be changed to pass through the machine's components, and the hydraulic actuator can be arranged more freely within the machine. The pulley's advantage is that the movement of the connecting element within the guide member is smooth, and the pulling force required to actuate the hydraulic actuator can be reduced.

[0007] On the other hand, a mobile work machine including the above-mentioned traction arrangement can be provided.

[0008] Therefore, it is possible to achieve optimal positioning of mobile work machinery with its traction arrangement.

[0009] The arrangement and mobile operating machinery are characterized by the contents described in the independent claims. Some other embodiments are characterized by the contents described in other claims. Embodiments of the invention are also disclosed in the specification and drawings of this patent application. The inventive scope of the patent application may also be defined in ways other than those defined in the appended claims. The inventive scope may also consist of several separate inventions, particularly if the invention is examined according to explicit or implicit sub-tasks or according to the acquired rights or groups of rights. Some of the definitions included in the appended claims may be unnecessary in consideration of the individual inventive ideas. Within the scope of the basic inventive concept, features of different embodiments of the invention can be applied to other embodiments.

[0010] In one embodiment, the traction element includes a hook. The advantage is that the hook is simple and quick to use in traction.

[0011] In one embodiment, the hydraulic actuator includes a hydraulic cylinder. The advantage is that hydraulic cylinders have a simple structure and can be directly adapted to this arrangement.

[0012] In one embodiment, the piston rod is attached to a first part of the frame, and the cylinder housing is connected to a second part of the traction element via a flexible connecting element. An advantage is that the shape of the piston rod can be altered to optimize the placement and size of the hydraulic cylinder.

[0013] In one embodiment, the cylinder housing is a first part attached to the frame, and the piston rod is connected to a second part of the traction element via a flexible connecting element. The advantage is that the space occupied by the hydraulic cylinder can be minimized.

[0014] In one embodiment, a flexible connecting element is connected to the hydraulic cylinder such that the hydraulic cylinder shortens with the traction force acting on the traction element. The advantage is that pressure can be generated in the piston-side chamber of the hydraulic cylinder, i.e., the side opposite to the piston rod-side chamber, and connected to the hydraulic circuit of the braking system, achieving a large volumetric flow of pressurized fluid from the cylinder relative to its external dimensions.

[0015] In one embodiment, a flexible connecting element is attached to a hydraulic cylinder, causing the cylinder to lengthen with the traction force acting on the traction element. An advantage is that this embodiment can be more easily implemented in some mobile work machines.

[0016] In one embodiment, the connecting element comprises a cable. The advantage is that cables have a simple structure and can be bent in all directions.

[0017] In one embodiment, the connecting element comprises a chain. An advantage is that the chain can maintain a highly inelastic structure even under high tension.

[0018] In one embodiment, the connecting element includes a belt. The advantage is that the belt can bend with a small radius of curvature and retains a very inelastic structure even under high tension.

[0019] In one embodiment, the connecting element comprises a rope. The advantage is that ropes have a simple structure and can be bent in all directions.

[0020] In one embodiment, at least a portion of the length of the connecting element is disposed within the housing. The advantage is that the housing protects the connecting element from external stresses. Additionally, the housing can have a curved shape, thus allowing the path of the connecting element to be altered by the housing.

[0021] In one embodiment, the hydraulic actuator includes a return element arranged to return the hydraulic actuator to its initial position when the traction element is released from the traction force. The advantage is that the hydraulic actuator can return to its original position quickly.

[0022] In one embodiment, the hydraulic actuator includes a connector for connecting to the hydraulic circuit of the braking system of the mobile work machinery, wherein hydraulic pressure generated in the hydraulic actuator due to the traction force acting on the traction element is arranged to release the brake of the mobile work machinery. An advantage is that this arrangement allows for simple control of the braking system. Attached Figure Description

[0023] Some embodiments of this disclosure are described in more detail in the accompanying drawings, in which...

[0024] Figure 1 This is a schematic diagram of the traction arrangement.

[0025] Figure 2 This is a schematic diagram of part of another traction arrangement.

[0026] Figure 3 This is a schematic diagram of the third traction arrangement, and

[0027] Figure 4 is a schematic diagram of a hydraulic actuator.

[0028] In the figures, some embodiments are shown in a simplified manner for clarity. Similar parts are indicated by the same reference numerals in the figures. Detailed Implementation

[0029] Figure 1This is a schematic diagram of the traction arrangement. According to an aspect of the invention, the traction arrangement 100 described herein is arranged in a mobile working machine. The mobile working machine can be any type of multi-purpose vehicle, such as a tractor, truck, agricultural machinery, forestry machinery, etc. According to an aspect of the invention, the working machine is mining machinery or construction machinery. Different types of working machinery are used in mines (such as underground mines and open-pit mines) and other work sites. The working machine is equipped with one or more working devices. For example, mining machinery can be equipped with working devices for performing mining work tasks at the work site. Mining machinery or construction machinery can be, for example, rock drilling rigs, development drilling rigs, tunnel drilling rigs, open-pit drilling rigs, bolting or reinforcement vehicles, rock clearing machines, deep hole drilling rigs, explosives loading machines, loaders, transport vehicles, loading or traction machinery, gallery arc or net setting vehicles, concrete spraying machines, crushers, or surveying vehicles.

[0030] Arrangement 100 includes a traction element 1 for allowing a traction tool to connect to the traction arrangement 100. In one embodiment, as shown in the figure, the traction element 2 includes a hook. In some other embodiments, the traction element is another type of element, such as a ring.

[0031] When a traction force is applied to the traction element 1, the traction element 1 is arranged to move relative to the frame 2 of the working machine, as indicated by arrow M.

[0032] The traction arrangement 100 includes a hydraulic actuator 3 having two parts, such that a first part 4a is attached to the frame 2 and a second part 4b is connected to the traction element 1. The traction arrangement 100 includes a flexible connecting element 5 arranged to connect the traction element 1 to the hydraulic actuator 3 for transmitting motion of the traction element 1 to the hydraulic actuator 3. The hydraulic actuator 3 is arranged to generate hydraulic pressure in response to the movement of the traction element 1 relative to the frame 2. The connecting element 5 is flexible, thus possessing the ability to bend and thereby change its path. However, the connecting element 5 is inelastic or inextensible, such that motion of the traction element can be transmitted to the hydraulic actuator 3.

[0033] In one embodiment, the connecting element 5 includes a cable, such as a metal cable, with a thickness of, for example, 8-10 mm. In another embodiment, the connecting element 5 includes a chain. In yet another embodiment, the connecting element 5 includes a belt. In still another embodiment, the connecting element 5 includes a rope.

[0034] In one embodiment, at least one guide member 8 is provided, which is arranged to change the route of the connecting element 5. In another embodiment, such as... Figure 1 As shown, the guide member 8 is a pulley that can rotate about its axis. In embodiments where the connecting element 5 includes a chain or belt, the pulley may be, for example, a sprocket.

[0035] In one embodiment, the guide member 8 includes a guide surface, such as a cycling shoe part, on which the connecting element 5 bends from one direction to another.

[0036] In one embodiment, the hydraulic actuator 3 is a hydraulic cylinder comprising a piston rod 6 and a cylinder housing 7. In another embodiment, as... Figure 1 As shown, the cylinder housing 7 is attached to the frame 2, and the piston rod 6 is connected to the traction element 1 via a flexible connecting element 5. The flexible connecting element 5 is connected to the hydraulic cylinder so that the hydraulic cylinder shortens with the traction force acting on the traction element 2.

[0037] In such Figure 1 and Figure 2 In the embodiment shown, the outer contour of the cylinder shell 7 is not circular but polygonal, such as a square.

[0038] In one embodiment, the end of the flexible connecting element 5 attached to the piston rod 6 has a multi-branch design, i.e., it has at least two branches 12. The branches 12 are connected to the second part 4b, i.e., the moving part, thereby ensuring the balanced movement of the second part 4b. In another embodiment, the flexible connecting element 5 includes two or more separate and parallel components that extend from the traction element 1 to the hydraulic actuator 3.

[0039] According to an aspect of the invention, a hydraulic actuator 3, such as a hydraulic cylinder, is connected to the hydraulic circuit of the braking system of the mobile work machinery 200, such that hydraulic fluid can flow from the hydraulic actuator 3 to the hydraulic circuit and vice versa. This connection may include hydraulic hoses, fittings, etc.

[0040] The hydraulic actuator 3 includes a connector 11 for connecting the actuator to the hydraulic circuit of the braking system of the mobile work machinery 200. Hydraulic pressure generated in the hydraulic actuator 3 due to the traction force acting on the traction element 2 is arranged to release the brake of the mobile work machinery 200.

[0041] In one embodiment, the piston-side chamber of the hydraulic cylinder, i.e., the side opposite to the piston rod-side chamber, is connected to the hydraulic circuit of the braking system, such that the brake of the mobile work machinery 200 is released by the pressure generated in the piston-side chamber. Since the volume of the piston-side chamber is not limited by the piston rod, it is relatively large, thus allowing for a large volume flow of pressurized fluid from the cylinder compared to its external dimensions. This makes it possible, for example, to use a smaller cylinder in arrangement 100.

[0042] In one embodiment, arrangement 100 includes a return element 10, which is arranged to return the hydraulic actuator 3 to its initial position when the traction element 1 is released from the traction force. For example... Figure 1 In the illustrated embodiment, the return element 10 is integrated into the hydraulic actuator 3, i.e., integrated within or outside the hydraulic cylinder. In one embodiment, the return element 10 includes a spring, such as a coil spring, arranged inside or around the cylinder. In another embodiment, the spring is arranged separately from the hydraulic actuator 3. In yet another embodiment, the return element 10 comprises a gas, such as nitrogen. The gas is arranged in a closed chamber whose volume changes when the cylinder is compressed. This volume change causes the gas pressure to decrease or increase. As the traction element 2 is released from the traction force, the gas helps the actuator return to its initial length.

[0043] In one embodiment, arrangement 100 is provided with at least one return element 13 of the traction element. The return element 13 is arranged to return the traction element 1 to its initial position relative to the frame 2 when the traction element 1 is released from the traction force. The return element 13 may include, for example, a spring, such as a coil spring or leaf spring, or a gas spring. Once the traction force F is withdrawn, the return element 13 forces the traction element 1 back to its stationary state. Subsequently, the brakes of the mining machinery are activated, and the mining machinery does not move unintentionally. In one embodiment, the brakes are activated when the traction element 2 and the main body 1 are fully retracted. In another embodiment, the brakes are activated when the traction element 2 and the main body 1 have retracted a predetermined length toward the stationary state. In other words, the brakes are activated before the traction element 2 and the main body 1 have reached the stationary state. The predetermined length may be, for example, 50mm–200mm, such as 80mm, 100mm, or 150mm.

[0044] Figure 2 This is a schematic diagram of a portion of another traction arrangement. In this embodiment, the hydraulic actuator 3 is a hydraulic cylinder, whose piston rod 6 is attached to the first part 4a of the frame 2. The cylinder housing 7 of this hydraulic cylinder is connected to the second part 4b of the traction element 1 via a flexible connecting element 5. An example of this embodiment is shown below. Figure 2 As shown.

[0045] In one embodiment, arrangement 100 includes a housing 9 in which at least a portion of the length of connecting element 5 is disposed. Housing 9 may include, for example, a metal tube. The housing may be straight, such as… Figure 2 As shown, it can bend in at least one direction to change the route of connecting element 5.

[0046] Figure 4 shows another embodiment of the hydraulic actuator 3, in which the piston rod 6 is attached to the frame 2. The piston rod 6 has a 90° bend or bend, which allows the actuator 3 to be attached to the frame 2 in an alternative manner. The piston rod can even have multiple bends or bends, and the magnitude of their angles can vary.

[0047] Figure 3 This is a schematic diagram of the third traction arrangement. In some embodiments, such as Figure 3 As shown, the flexible connecting element 5 is connected to the hydraulic cylinder, causing the hydraulic cylinder to lengthen with the traction force acting on the traction element 2. In these embodiments, the cylinder housing 7 may be attached to the frame 2, and the piston rod 6 may be connected to the traction element 1 via the flexible connecting element 5, or vice versa, meaning that the piston rod 6 is attached to the frame 2, and the cylinder housing 7 is connected to the flexible connecting element 5.

[0048] In such Figure 3 In the embodiment shown, the chamber on the piston rod 6 side of the hydraulic cylinder is connected to the hydraulic circuit of the braking system via connector 11, so that the brake of the mobile work machine 200 is released by the pressure generated in the piston-side chamber.

[0049] In the figure, the hydraulic actuator 3 is arranged at least substantially horizontally and points in the longitudinal direction of the mobile work machinery 200. However, this is not always necessary, as the route of the connecting element 5 can be arranged in many ways, for example, using the guide member 8 and the housing 9. Therefore, it is possible to arrange the hydraulic actuator 3 in a vertical position, or in a position between a horizontal and a vertical position. A vertical or partially vertical position facilitates ventilation of the hydraulic actuator. The position of the hydraulic actuator 3 can be transverse to, or even perpendicular to, the longitudinal direction of the mobile work machinery 200.

[0050] This invention is not limited to the embodiments described above, but many variations are possible within the scope of the inventive concept defined by the appended claims. Within the scope of the inventive concept, attributes of different embodiments and applications may be used in combination with or in lieu of attributes of another embodiment or application.

[0051] The accompanying drawings and related descriptions are intended only to illustrate the concept of the invention. Variations in detail may be made within the scope of the inventive concept defined in the appended claims.

[0052] List of reference numerals

[0053] 1 Traction element

[0054] 2 Framework

[0055] 3. Hydraulic actuator

[0056] 4a, b Parts of the hydraulic actuator

[0057] 5 Connecting elements

[0058] 6 Piston rod

[0059] 7-cylinder outer shell

[0060] 8. Guiding components

[0061] 9. Shell

[0062] 10. Actuator return element

[0063] 11 Connectors

[0064] 12. Branches of connecting elements

[0065] 13. Return element of traction element

[0066] 100 Traction Arrangement

[0067] 200 Mobile Operating Machinery

[0068] M - Direction of movement

Claims

1. A traction arrangement for mobile work machinery, said arrangement (100) comprising: - A traction element (1), said traction element (1) for allowing a traction tool to be connected to the traction arrangement (100), - The traction element (1) is arranged such that when a traction force is applied to the traction element (1), the traction element moves relative to the frame (2) of the working machine. - Hydraulic actuator (3), - The first part (4a) of the hydraulic actuator (3), the first part being attached to the frame (2), and - The second part (4b) of the hydraulic actuator (3), which is connected to the traction element (1), such that - The hydraulic actuator (3) is arranged to generate hydraulic pressure in response to the movement of the traction element (1) relative to the frame (2), wherein - The traction arrangement (100) includes a flexible connecting element (5) arranged to connect the traction element (1) to the hydraulic actuator (3) to transmit the motion of the traction element (1) to the hydraulic actuator (3). Its features - The arrangement (100) further includes at least one guide member (8) arranged to change the path of the flexible connecting element (5), wherein the guide member (8) is a pulley; and The hydraulic actuator (3) includes a connector (11) for connecting to the hydraulic circuit of the braking system of the mobile work machine (200), and wherein the hydraulic pressure generated in the hydraulic actuator (3) due to the traction force acting on the traction element (1) is arranged to release the brake of the mobile work machine (200).

2. The arrangement according to claim 1, wherein, The traction element (1) includes a hook.

3. The arrangement according to claim 1 or 2, wherein, The hydraulic actuator (3) is a hydraulic cylinder, which includes a piston rod (6) and a cylinder housing (7).

4. The arrangement according to claim 3, wherein, The piston rod (6) is the first part (4a) attached to the frame (2), and the cylinder housing (7) is connected to the second part (4b) of the traction element (1) via the flexible connecting element (5).

5. The arrangement according to claim 3, wherein, The cylinder housing (7) is the first part (4a) attached to the frame (2), and the piston rod (6) is connected to the second part (4b) of the traction element (1) via the flexible connecting element (5).

6. The arrangement according to any one of claims 3-5, wherein, The flexible connecting element (5) is connected to the hydraulic cylinder such that the hydraulic cylinder shortens with the traction force acting on the traction element (1).

7. The arrangement according to any one of claims 3-5, wherein, The flexible connecting element (5) is connected to the hydraulic cylinder such that the hydraulic cylinder lengthens with the traction force acting on the traction element (1).

8. The arrangement according to any one of the preceding claims, wherein, The flexible connecting element (5) includes at least one of the following: cable, chain, belt and rope.

9. The arrangement according to any one of the preceding claims, wherein, At least a portion of the length of the flexible connecting element (5) is arranged in the housing (9).

10. The arrangement according to any one of the preceding claims, wherein, The hydraulic actuator (3) includes a return element (10) arranged to return the hydraulic actuator (3) to its initial position when the traction element (1) is released from the traction force.

11. A mobile working machine, comprising a traction arrangement (100) according to any one of the preceding claims.

12. The mobile work machinery according to claim 11, wherein, The mobile operating machinery mentioned is mining machinery.

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